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 |
ab7cb0df TM |
86 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
87 | struct rpc_cred *); | |
88 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
89 | struct rpc_cred *); | |
f062eb6c | 90 | #endif |
1da177e4 | 91 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 92 | static int nfs4_map_errors(int err) |
1da177e4 | 93 | { |
52567b03 TM |
94 | if (err >= -1000) |
95 | return err; | |
96 | switch (err) { | |
97 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
98 | case -NFS4ERR_LAYOUTTRYLATER: |
99 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 100 | return -EREMOTEIO; |
7ebb9315 BS |
101 | case -NFS4ERR_WRONGSEC: |
102 | return -EPERM; | |
3ddeb7c5 TM |
103 | case -NFS4ERR_BADOWNER: |
104 | case -NFS4ERR_BADNAME: | |
105 | return -EINVAL; | |
fb13bfa7 TM |
106 | case -NFS4ERR_SHARE_DENIED: |
107 | return -EACCES; | |
f25efd85 SD |
108 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
109 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
110 | case -NFS4ERR_ACCESS: |
111 | return -EACCES; | |
6e3cf241 TM |
112 | case -NFS4ERR_FILE_OPEN: |
113 | return -EBUSY; | |
52567b03 | 114 | default: |
1da177e4 | 115 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 116 | __func__, -err); |
52567b03 | 117 | break; |
1da177e4 | 118 | } |
52567b03 | 119 | return -EIO; |
1da177e4 LT |
120 | } |
121 | ||
122 | /* | |
123 | * This is our standard bitmap for GETATTR requests. | |
124 | */ | |
1549210f | 125 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
126 | FATTR4_WORD0_TYPE |
127 | | FATTR4_WORD0_CHANGE | |
128 | | FATTR4_WORD0_SIZE | |
129 | | FATTR4_WORD0_FSID | |
130 | | FATTR4_WORD0_FILEID, | |
131 | FATTR4_WORD1_MODE | |
132 | | FATTR4_WORD1_NUMLINKS | |
133 | | FATTR4_WORD1_OWNER | |
134 | | FATTR4_WORD1_OWNER_GROUP | |
135 | | FATTR4_WORD1_RAWDEV | |
136 | | FATTR4_WORD1_SPACE_USED | |
137 | | FATTR4_WORD1_TIME_ACCESS | |
138 | | FATTR4_WORD1_TIME_METADATA | |
139 | | FATTR4_WORD1_TIME_MODIFY | |
140 | }; | |
141 | ||
1549210f TM |
142 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
143 | FATTR4_WORD0_TYPE | |
144 | | FATTR4_WORD0_CHANGE | |
145 | | FATTR4_WORD0_SIZE | |
146 | | FATTR4_WORD0_FSID | |
147 | | FATTR4_WORD0_FILEID, | |
148 | FATTR4_WORD1_MODE | |
149 | | FATTR4_WORD1_NUMLINKS | |
150 | | FATTR4_WORD1_OWNER | |
151 | | FATTR4_WORD1_OWNER_GROUP | |
152 | | FATTR4_WORD1_RAWDEV | |
153 | | FATTR4_WORD1_SPACE_USED | |
154 | | FATTR4_WORD1_TIME_ACCESS | |
155 | | FATTR4_WORD1_TIME_METADATA | |
156 | | FATTR4_WORD1_TIME_MODIFY, | |
157 | FATTR4_WORD2_MDSTHRESHOLD | |
158 | }; | |
159 | ||
e23008ec AA |
160 | static const u32 nfs4_open_noattr_bitmap[3] = { |
161 | FATTR4_WORD0_TYPE | |
162 | | FATTR4_WORD0_CHANGE | |
163 | | FATTR4_WORD0_FILEID, | |
164 | }; | |
165 | ||
1da177e4 LT |
166 | const u32 nfs4_statfs_bitmap[2] = { |
167 | FATTR4_WORD0_FILES_AVAIL | |
168 | | FATTR4_WORD0_FILES_FREE | |
169 | | FATTR4_WORD0_FILES_TOTAL, | |
170 | FATTR4_WORD1_SPACE_AVAIL | |
171 | | FATTR4_WORD1_SPACE_FREE | |
172 | | FATTR4_WORD1_SPACE_TOTAL | |
173 | }; | |
174 | ||
4ce79717 | 175 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
176 | FATTR4_WORD0_MAXLINK |
177 | | FATTR4_WORD0_MAXNAME, | |
178 | 0 | |
179 | }; | |
180 | ||
dae100c2 | 181 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
182 | | FATTR4_WORD0_MAXREAD |
183 | | FATTR4_WORD0_MAXWRITE | |
184 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 185 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
186 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
187 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
188 | }; |
189 | ||
830b8e33 MN |
190 | const u32 nfs4_fs_locations_bitmap[2] = { |
191 | FATTR4_WORD0_TYPE | |
192 | | FATTR4_WORD0_CHANGE | |
193 | | FATTR4_WORD0_SIZE | |
194 | | FATTR4_WORD0_FSID | |
195 | | FATTR4_WORD0_FILEID | |
196 | | FATTR4_WORD0_FS_LOCATIONS, | |
197 | FATTR4_WORD1_MODE | |
198 | | FATTR4_WORD1_NUMLINKS | |
199 | | FATTR4_WORD1_OWNER | |
200 | | FATTR4_WORD1_OWNER_GROUP | |
201 | | FATTR4_WORD1_RAWDEV | |
202 | | FATTR4_WORD1_SPACE_USED | |
203 | | FATTR4_WORD1_TIME_ACCESS | |
204 | | FATTR4_WORD1_TIME_METADATA | |
205 | | FATTR4_WORD1_TIME_MODIFY | |
206 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
207 | }; | |
208 | ||
bc4785cd | 209 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
210 | struct nfs4_readdir_arg *readdir) |
211 | { | |
0dbb4c67 | 212 | __be32 *start, *p; |
1da177e4 | 213 | |
1da177e4 | 214 | if (cookie > 2) { |
b7ef1956 | 215 | readdir->cookie = cookie; |
1da177e4 LT |
216 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
217 | return; | |
218 | } | |
219 | ||
220 | readdir->cookie = 0; | |
221 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
222 | if (cookie == 2) | |
223 | return; | |
224 | ||
225 | /* | |
226 | * NFSv4 servers do not return entries for '.' and '..' | |
227 | * Therefore, we fake these entries here. We let '.' | |
228 | * have cookie 0 and '..' have cookie 1. Note that | |
229 | * when talking to the server, we always send cookie 0 | |
230 | * instead of 1 or 2. | |
231 | */ | |
2b86ce2d | 232 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
233 | |
234 | if (cookie == 0) { | |
235 | *p++ = xdr_one; /* next */ | |
236 | *p++ = xdr_zero; /* cookie, first word */ | |
237 | *p++ = xdr_one; /* cookie, second word */ | |
238 | *p++ = xdr_one; /* entry len */ | |
239 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
240 | p++; | |
241 | *p++ = xdr_one; /* bitmap length */ | |
242 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
243 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 244 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
245 | } |
246 | ||
247 | *p++ = xdr_one; /* next */ | |
248 | *p++ = xdr_zero; /* cookie, first word */ | |
249 | *p++ = xdr_two; /* cookie, second word */ | |
250 | *p++ = xdr_two; /* entry len */ | |
251 | memcpy(p, "..\0\0", 4); /* entry */ | |
252 | p++; | |
253 | *p++ = xdr_one; /* bitmap length */ | |
254 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
255 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 256 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
257 | |
258 | readdir->pgbase = (char *)p - (char *)start; | |
259 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 260 | kunmap_atomic(start); |
1da177e4 LT |
261 | } |
262 | ||
65de872e TM |
263 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
264 | { | |
265 | int res = 0; | |
266 | ||
267 | might_sleep(); | |
268 | ||
269 | if (*timeout <= 0) | |
270 | *timeout = NFS4_POLL_RETRY_MIN; | |
271 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
272 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 273 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
274 | if (fatal_signal_pending(current)) |
275 | res = -ERESTARTSYS; | |
276 | *timeout <<= 1; | |
277 | return res; | |
278 | } | |
279 | ||
280 | /* This is the error handling routine for processes that are allowed | |
281 | * to sleep. | |
282 | */ | |
b064eca2 | 283 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
284 | { |
285 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 286 | struct nfs4_state *state = exception->state; |
3114ea7a | 287 | struct inode *inode = exception->inode; |
65de872e TM |
288 | int ret = errorcode; |
289 | ||
290 | exception->retry = 0; | |
291 | switch(errorcode) { | |
292 | case 0: | |
293 | return 0; | |
3114ea7a | 294 | case -NFS4ERR_OPENMODE: |
011e2a7f | 295 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 296 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
297 | exception->retry = 1; |
298 | return 0; | |
299 | } | |
300 | if (state == NULL) | |
301 | break; | |
5d422301 TM |
302 | ret = nfs4_schedule_stateid_recovery(server, state); |
303 | if (ret < 0) | |
304 | break; | |
3114ea7a | 305 | goto wait_on_recovery; |
a1d0b5ee | 306 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
307 | case -NFS4ERR_ADMIN_REVOKED: |
308 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
309 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
310 | nfs_remove_bad_delegation(inode); | |
311 | exception->retry = 1; | |
312 | break; | |
313 | } | |
9e33bed5 TM |
314 | if (state == NULL) |
315 | break; | |
5d422301 TM |
316 | ret = nfs4_schedule_stateid_recovery(server, state); |
317 | if (ret < 0) | |
318 | break; | |
0400a6b0 | 319 | goto wait_on_recovery; |
0ced63d1 | 320 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
321 | if (state != NULL) { |
322 | ret = nfs4_schedule_stateid_recovery(server, state); | |
323 | if (ret < 0) | |
324 | break; | |
325 | } | |
65de872e | 326 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 327 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
328 | nfs4_schedule_lease_recovery(clp); |
329 | goto wait_on_recovery; | |
03391693 | 330 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
331 | case -NFS4ERR_BADSESSION: |
332 | case -NFS4ERR_BADSLOT: | |
333 | case -NFS4ERR_BAD_HIGH_SLOT: | |
334 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
335 | case -NFS4ERR_DEADSESSION: | |
336 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
337 | case -NFS4ERR_SEQ_MISORDERED: | |
338 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
339 | errorcode); | |
9f594791 | 340 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 341 | goto wait_on_recovery; |
03391693 | 342 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 343 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
344 | if (exception->timeout > HZ) { |
345 | /* We have retried a decent amount, time to | |
346 | * fail | |
347 | */ | |
348 | ret = -EBUSY; | |
349 | break; | |
350 | } | |
65de872e TM |
351 | case -NFS4ERR_GRACE: |
352 | case -NFS4ERR_DELAY: | |
353 | ret = nfs4_delay(server->client, &exception->timeout); | |
354 | if (ret != 0) | |
355 | break; | |
a8a4ae3a | 356 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
357 | case -NFS4ERR_OLD_STATEID: |
358 | exception->retry = 1; | |
b064eca2 TM |
359 | break; |
360 | case -NFS4ERR_BADOWNER: | |
361 | /* The following works around a Linux server bug! */ | |
362 | case -NFS4ERR_BADNAME: | |
363 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
364 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
365 | exception->retry = 1; | |
366 | printk(KERN_WARNING "NFS: v4 server %s " | |
367 | "does not accept raw " | |
368 | "uid/gids. " | |
369 | "Reenabling the idmapper.\n", | |
370 | server->nfs_client->cl_hostname); | |
371 | } | |
65de872e TM |
372 | } |
373 | /* We failed to handle the error */ | |
374 | return nfs4_map_errors(ret); | |
0400a6b0 | 375 | wait_on_recovery: |
a2c0b9e2 TM |
376 | ret = nfs4_wait_clnt_recover(clp); |
377 | if (ret == 0) | |
378 | exception->retry = 1; | |
379 | return ret; | |
65de872e TM |
380 | } |
381 | ||
382 | ||
452e9352 | 383 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 384 | { |
1da177e4 LT |
385 | spin_lock(&clp->cl_lock); |
386 | if (time_before(clp->cl_last_renewal,timestamp)) | |
387 | clp->cl_last_renewal = timestamp; | |
388 | spin_unlock(&clp->cl_lock); | |
389 | } | |
390 | ||
452e9352 TM |
391 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
392 | { | |
393 | do_renew_lease(server->nfs_client, timestamp); | |
394 | } | |
395 | ||
cccef3b9 AA |
396 | #if defined(CONFIG_NFS_V4_1) |
397 | ||
d185a334 | 398 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 399 | { |
e3725ec0 | 400 | struct nfs4_session *session; |
13615871 | 401 | struct nfs4_slot_table *tbl; |
c10e4498 | 402 | bool send_new_highest_used_slotid = false; |
13615871 | 403 | |
dfb4f309 | 404 | if (!res->sr_slot) { |
13615871 AA |
405 | /* just wake up the next guy waiting since |
406 | * we may have not consumed a slot after all */ | |
691daf3b | 407 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 408 | return; |
13615871 | 409 | } |
e3725ec0 TM |
410 | tbl = res->sr_slot->table; |
411 | session = tbl->session; | |
ea028ac9 | 412 | |
35dc1d74 | 413 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
414 | /* Be nice to the server: try to ensure that the last transmitted |
415 | * value for highest_user_slotid <= target_highest_slotid | |
416 | */ | |
417 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
418 | send_new_highest_used_slotid = true; | |
419 | ||
b75ad4cd TM |
420 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
421 | send_new_highest_used_slotid = false; | |
422 | goto out_unlock; | |
423 | } | |
f4af6e2a | 424 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
425 | |
426 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
427 | send_new_highest_used_slotid = false; | |
b75ad4cd | 428 | out_unlock: |
35dc1d74 | 429 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 430 | res->sr_slot = NULL; |
c10e4498 TM |
431 | if (send_new_highest_used_slotid) |
432 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
433 | } |
434 | ||
14516c3a | 435 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 436 | { |
e3725ec0 | 437 | struct nfs4_session *session; |
933602e3 | 438 | struct nfs4_slot *slot; |
14516c3a | 439 | struct nfs_client *clp; |
ac20d163 | 440 | bool interrupted = false; |
85563073 | 441 | int ret = 1; |
b0df806c | 442 | |
468f8613 BS |
443 | /* don't increment the sequence number if the task wasn't sent */ |
444 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
445 | goto out; |
446 | ||
933602e3 | 447 | slot = res->sr_slot; |
e3725ec0 | 448 | session = slot->table->session; |
933602e3 | 449 | |
ac20d163 TM |
450 | if (slot->interrupted) { |
451 | slot->interrupted = 0; | |
452 | interrupted = true; | |
453 | } | |
454 | ||
691daf3b | 455 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
456 | switch (res->sr_status) { |
457 | case 0: | |
b0df806c | 458 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 459 | ++slot->seq_nr; |
e3725ec0 | 460 | clp = session->clp; |
8e63b6a8 | 461 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 462 | /* Check sequence flags */ |
b4410c2f TM |
463 | if (res->sr_status_flags != 0) |
464 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 465 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 466 | break; |
ac20d163 TM |
467 | case 1: |
468 | /* | |
469 | * sr_status remains 1 if an RPC level error occurred. | |
470 | * The server may or may not have processed the sequence | |
471 | * operation.. | |
472 | * Mark the slot as having hosted an interrupted RPC call. | |
473 | */ | |
474 | slot->interrupted = 1; | |
475 | goto out; | |
14516c3a TM |
476 | case -NFS4ERR_DELAY: |
477 | /* The server detected a resend of the RPC call and | |
478 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
479 | * of RFC5661. | |
480 | */ | |
df2fabff | 481 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 482 | __func__, |
df2fabff | 483 | slot->slot_nr, |
933602e3 | 484 | slot->seq_nr); |
14516c3a | 485 | goto out_retry; |
85563073 TM |
486 | case -NFS4ERR_BADSLOT: |
487 | /* | |
488 | * The slot id we used was probably retired. Try again | |
489 | * using a different slot id. | |
490 | */ | |
e8794440 TM |
491 | goto retry_nowait; |
492 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
493 | /* |
494 | * Was the last operation on this sequence interrupted? | |
495 | * If so, retry after bumping the sequence number. | |
496 | */ | |
497 | if (interrupted) { | |
498 | ++slot->seq_nr; | |
499 | goto retry_nowait; | |
500 | } | |
e8794440 TM |
501 | /* |
502 | * Could this slot have been previously retired? | |
503 | * If so, then the server may be expecting seq_nr = 1! | |
504 | */ | |
8e63b6a8 TM |
505 | if (slot->seq_nr != 1) { |
506 | slot->seq_nr = 1; | |
507 | goto retry_nowait; | |
508 | } | |
509 | break; | |
e8794440 TM |
510 | case -NFS4ERR_SEQ_FALSE_RETRY: |
511 | ++slot->seq_nr; | |
512 | goto retry_nowait; | |
14516c3a TM |
513 | default: |
514 | /* Just update the slot sequence no. */ | |
933602e3 | 515 | ++slot->seq_nr; |
b0df806c AA |
516 | } |
517 | out: | |
518 | /* The session may be reset by one of the error handlers. */ | |
519 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 520 | nfs41_sequence_free_slot(res); |
85563073 | 521 | return ret; |
e8794440 TM |
522 | retry_nowait: |
523 | if (rpc_restart_call_prepare(task)) { | |
524 | task->tk_status = 0; | |
525 | ret = 0; | |
526 | } | |
527 | goto out; | |
14516c3a | 528 | out_retry: |
d05dd4e9 | 529 | if (!rpc_restart_call(task)) |
14516c3a TM |
530 | goto out; |
531 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
532 | return 0; | |
b0df806c AA |
533 | } |
534 | ||
14516c3a TM |
535 | static int nfs4_sequence_done(struct rpc_task *task, |
536 | struct nfs4_sequence_res *res) | |
df896455 | 537 | { |
e3725ec0 | 538 | if (res->sr_slot == NULL) |
14516c3a TM |
539 | return 1; |
540 | return nfs41_sequence_done(task, res); | |
df896455 TM |
541 | } |
542 | ||
9d12b216 TM |
543 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
544 | struct nfs4_sequence_res *res, int cache_reply) | |
545 | { | |
2b2fa717 | 546 | args->sa_slot = NULL; |
9d12b216 | 547 | args->sa_cache_this = 0; |
8fe72bac | 548 | args->sa_privileged = 0; |
9d12b216 TM |
549 | if (cache_reply) |
550 | args->sa_cache_this = 1; | |
9d12b216 TM |
551 | res->sr_slot = NULL; |
552 | } | |
553 | ||
8fe72bac TM |
554 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
555 | { | |
556 | args->sa_privileged = 1; | |
557 | } | |
558 | ||
dc70d7b3 | 559 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
560 | struct nfs4_sequence_args *args, |
561 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
562 | struct rpc_task *task) |
563 | { | |
fbcd4abc AA |
564 | struct nfs4_slot *slot; |
565 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
566 | |
567 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 568 | /* slot already allocated? */ |
dfb4f309 | 569 | if (res->sr_slot != NULL) |
d9afbd1b | 570 | goto out_success; |
ce5039c1 | 571 | |
fbcd4abc AA |
572 | tbl = &session->fc_slot_table; |
573 | ||
69d206b5 TM |
574 | task->tk_timeout = 0; |
575 | ||
fbcd4abc | 576 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 577 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 578 | !args->sa_privileged) { |
0b1c8fc4 | 579 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 580 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 581 | goto out_sleep; |
689cf5c1 AB |
582 | } |
583 | ||
2dc03b7f | 584 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
585 | if (IS_ERR(slot)) { |
586 | /* If out of memory, try again in 1/4 second */ | |
587 | if (slot == ERR_PTR(-ENOMEM)) | |
588 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 589 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 590 | goto out_sleep; |
fbcd4abc AA |
591 | } |
592 | spin_unlock(&tbl->slot_tbl_lock); | |
593 | ||
2b2fa717 | 594 | args->sa_slot = slot; |
fbcd4abc | 595 | |
2dc03b7f TM |
596 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
597 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 598 | |
dfb4f309 | 599 | res->sr_slot = slot; |
8e63b6a8 | 600 | res->sr_timestamp = jiffies; |
2a6e26cd | 601 | res->sr_status_flags = 0; |
fbcd4abc AA |
602 | /* |
603 | * sr_status is only set in decode_sequence, and so will remain | |
604 | * set to 1 if an rpc level failure occurs. | |
605 | */ | |
606 | res->sr_status = 1; | |
d9afbd1b TM |
607 | out_success: |
608 | rpc_call_start(task); | |
ce5039c1 | 609 | return 0; |
7b939a3f | 610 | out_sleep: |
8fe72bac TM |
611 | /* Privileged tasks are queued with top priority */ |
612 | if (args->sa_privileged) | |
1e1093c7 TM |
613 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
614 | NULL, RPC_PRIORITY_PRIVILEGED); | |
615 | else | |
616 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
617 | spin_unlock(&tbl->slot_tbl_lock); |
618 | return -EAGAIN; | |
ce5039c1 | 619 | } |
dc70d7b3 | 620 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 621 | |
035168ab | 622 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
623 | struct nfs4_sequence_args *args, |
624 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
625 | struct rpc_task *task) |
626 | { | |
035168ab | 627 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
628 | int ret = 0; |
629 | ||
d9afbd1b TM |
630 | if (session == NULL) { |
631 | rpc_call_start(task); | |
035168ab | 632 | goto out; |
d9afbd1b | 633 | } |
035168ab | 634 | |
df2fabff | 635 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 636 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 637 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 638 | |
9d12b216 | 639 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
640 | out: |
641 | dprintk("<-- %s status=%d\n", __func__, ret); | |
642 | return ret; | |
643 | } | |
644 | ||
645 | struct nfs41_call_sync_data { | |
035168ab | 646 | const struct nfs_server *seq_server; |
ce5039c1 AA |
647 | struct nfs4_sequence_args *seq_args; |
648 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
649 | }; |
650 | ||
651 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
652 | { | |
653 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 654 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 655 | |
035168ab TM |
656 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
657 | ||
d9afbd1b | 658 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
659 | } |
660 | ||
69ab40c4 AA |
661 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
662 | { | |
663 | struct nfs41_call_sync_data *data = calldata; | |
664 | ||
14516c3a | 665 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
666 | } |
667 | ||
17280175 | 668 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 669 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 670 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
671 | }; |
672 | ||
7c513058 BS |
673 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
674 | struct nfs_server *server, | |
ce5039c1 AA |
675 | struct rpc_message *msg, |
676 | struct nfs4_sequence_args *args, | |
8fe72bac | 677 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
678 | { |
679 | int ret; | |
680 | struct rpc_task *task; | |
681 | struct nfs41_call_sync_data data = { | |
035168ab | 682 | .seq_server = server, |
ce5039c1 AA |
683 | .seq_args = args, |
684 | .seq_res = res, | |
ce5039c1 AA |
685 | }; |
686 | struct rpc_task_setup task_setup = { | |
7c513058 | 687 | .rpc_client = clnt, |
ce5039c1 AA |
688 | .rpc_message = msg, |
689 | .callback_ops = &nfs41_call_sync_ops, | |
690 | .callback_data = &data | |
691 | }; | |
692 | ||
ce5039c1 AA |
693 | task = rpc_run_task(&task_setup); |
694 | if (IS_ERR(task)) | |
695 | ret = PTR_ERR(task); | |
696 | else { | |
697 | ret = task->tk_status; | |
698 | rpc_put_task(task); | |
699 | } | |
700 | return ret; | |
701 | } | |
702 | ||
df896455 | 703 | #else |
8fe72bac | 704 | static |
9d12b216 TM |
705 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
706 | struct nfs4_sequence_res *res, int cache_reply) | |
707 | { | |
708 | } | |
709 | ||
8fe72bac TM |
710 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
711 | { | |
712 | } | |
713 | ||
714 | ||
14516c3a TM |
715 | static int nfs4_sequence_done(struct rpc_task *task, |
716 | struct nfs4_sequence_res *res) | |
df896455 | 717 | { |
14516c3a | 718 | return 1; |
df896455 | 719 | } |
cccef3b9 AA |
720 | #endif /* CONFIG_NFS_V4_1 */ |
721 | ||
fd0c0953 | 722 | static |
7c513058 BS |
723 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
724 | struct nfs_server *server, | |
cccef3b9 AA |
725 | struct rpc_message *msg, |
726 | struct nfs4_sequence_args *args, | |
fd0c0953 | 727 | struct nfs4_sequence_res *res) |
cccef3b9 | 728 | { |
7c513058 | 729 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
730 | } |
731 | ||
fd0c0953 | 732 | static |
7c513058 BS |
733 | int nfs4_call_sync(struct rpc_clnt *clnt, |
734 | struct nfs_server *server, | |
e73b83f2 BS |
735 | struct rpc_message *msg, |
736 | struct nfs4_sequence_args *args, | |
737 | struct nfs4_sequence_res *res, | |
738 | int cache_reply) | |
739 | { | |
fd0c0953 | 740 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 741 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 742 | args, res); |
e73b83f2 | 743 | } |
cccef3b9 | 744 | |
38478b24 | 745 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 746 | { |
38478b24 | 747 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 748 | |
38478b24 | 749 | spin_lock(&dir->i_lock); |
359d7d1c | 750 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 751 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 752 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 753 | dir->i_version = cinfo->after; |
de242c0b | 754 | nfs_fscache_invalidate(dir); |
38478b24 | 755 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
756 | } |
757 | ||
e56e0b78 | 758 | struct nfs4_opendata { |
c6d00e63 | 759 | struct kref kref; |
e56e0b78 TM |
760 | struct nfs_openargs o_arg; |
761 | struct nfs_openres o_res; | |
cdd4e68b TM |
762 | struct nfs_open_confirmargs c_arg; |
763 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
764 | struct nfs4_string owner_name; |
765 | struct nfs4_string group_name; | |
e56e0b78 | 766 | struct nfs_fattr f_attr; |
e56e0b78 | 767 | struct dentry *dir; |
82a2c1b7 | 768 | struct dentry *dentry; |
e56e0b78 | 769 | struct nfs4_state_owner *owner; |
aac00a8d | 770 | struct nfs4_state *state; |
e56e0b78 | 771 | struct iattr attrs; |
26e976a8 | 772 | unsigned long timestamp; |
3e309914 | 773 | unsigned int rpc_done : 1; |
bdeca1b7 | 774 | unsigned int is_recover : 1; |
24ac23ab TM |
775 | int rpc_status; |
776 | int cancelled; | |
e56e0b78 TM |
777 | }; |
778 | ||
49f9a0fa TM |
779 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
780 | int err, struct nfs4_exception *exception) | |
781 | { | |
782 | if (err != -EINVAL) | |
783 | return false; | |
784 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
785 | return false; | |
786 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
787 | exception->retry = 1; | |
788 | return true; | |
789 | } | |
790 | ||
791 | static enum open_claim_type4 | |
792 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
793 | enum open_claim_type4 claim) | |
794 | { | |
795 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
796 | return claim; | |
797 | switch (claim) { | |
798 | default: | |
799 | return claim; | |
800 | case NFS4_OPEN_CLAIM_FH: | |
801 | return NFS4_OPEN_CLAIM_NULL; | |
802 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
803 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
804 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
805 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
806 | } | |
807 | } | |
2ced46c2 TM |
808 | |
809 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
810 | { | |
811 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
812 | p->o_res.seqid = p->o_arg.seqid; |
813 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 814 | p->o_res.server = p->o_arg.server; |
5f657530 | 815 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 816 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 817 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
818 | } |
819 | ||
82a2c1b7 | 820 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 821 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 822 | const struct iattr *attrs, |
4a1c0893 | 823 | enum open_claim_type4 claim, |
8535b2be | 824 | gfp_t gfp_mask) |
e56e0b78 | 825 | { |
82a2c1b7 | 826 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
827 | struct inode *dir = parent->d_inode; |
828 | struct nfs_server *server = NFS_SERVER(dir); | |
829 | struct nfs4_opendata *p; | |
830 | ||
8535b2be | 831 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
832 | if (p == NULL) |
833 | goto err; | |
8535b2be | 834 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
835 | if (p->o_arg.seqid == NULL) |
836 | goto err_free; | |
82a2c1b7 AV |
837 | nfs_sb_active(dentry->d_sb); |
838 | p->dentry = dget(dentry); | |
e56e0b78 TM |
839 | p->dir = parent; |
840 | p->owner = sp; | |
841 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
842 | p->o_arg.open_flags = flags; |
843 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
844 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
845 | * will return permission denied for all bits until close */ | |
846 | if (!(flags & O_EXCL)) { | |
847 | /* ask server to check for all possible rights as results | |
848 | * are cached */ | |
849 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
850 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 851 | } |
7539bbab | 852 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
853 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
854 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 855 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
856 | p->o_arg.server = server; |
857 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 858 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
49f9a0fa TM |
859 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
860 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
861 | case NFS4_OPEN_CLAIM_NULL: |
862 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
863 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
864 | p->o_arg.fh = NFS_FH(dir); | |
865 | break; | |
866 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
867 | case NFS4_OPEN_CLAIM_FH: | |
868 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
869 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
870 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
871 | } | |
536e43d1 | 872 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 873 | __be32 verf[2]; |
d77d76ff | 874 | |
e56e0b78 TM |
875 | p->o_arg.u.attrs = &p->attrs; |
876 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
877 | |
878 | verf[0] = jiffies; | |
879 | verf[1] = current->pid; | |
880 | memcpy(p->o_arg.u.verifier.data, verf, | |
881 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 882 | } |
cdd4e68b TM |
883 | p->c_arg.fh = &p->o_res.fh; |
884 | p->c_arg.stateid = &p->o_res.stateid; | |
885 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 886 | nfs4_init_opendata_res(p); |
c6d00e63 | 887 | kref_init(&p->kref); |
e56e0b78 TM |
888 | return p; |
889 | err_free: | |
890 | kfree(p); | |
891 | err: | |
892 | dput(parent); | |
893 | return NULL; | |
894 | } | |
895 | ||
c6d00e63 | 896 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 897 | { |
c6d00e63 TM |
898 | struct nfs4_opendata *p = container_of(kref, |
899 | struct nfs4_opendata, kref); | |
82a2c1b7 | 900 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
901 | |
902 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
903 | if (p->state != NULL) |
904 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
905 | nfs4_put_state_owner(p->owner); |
906 | dput(p->dir); | |
82a2c1b7 AV |
907 | dput(p->dentry); |
908 | nfs_sb_deactive(sb); | |
6926afd1 | 909 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
910 | kfree(p); |
911 | } | |
912 | ||
913 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
914 | { | |
915 | if (p != NULL) | |
916 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
917 | } |
918 | ||
06f814a3 TM |
919 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
920 | { | |
06f814a3 TM |
921 | int ret; |
922 | ||
06f814a3 | 923 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
924 | return ret; |
925 | } | |
926 | ||
dc0b027d | 927 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
928 | { |
929 | int ret = 0; | |
dc0b027d | 930 | |
536e43d1 | 931 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
932 | goto out; |
933 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 934 | case FMODE_READ: |
88069f77 TM |
935 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
936 | && state->n_rdonly != 0; | |
6ee41268 TM |
937 | break; |
938 | case FMODE_WRITE: | |
88069f77 TM |
939 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
940 | && state->n_wronly != 0; | |
6ee41268 TM |
941 | break; |
942 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
943 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
944 | && state->n_rdwr != 0; | |
6ee41268 | 945 | } |
dc0b027d | 946 | out: |
6ee41268 TM |
947 | return ret; |
948 | } | |
949 | ||
dc0b027d | 950 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 951 | { |
652f89f6 TM |
952 | if (delegation == NULL) |
953 | return 0; | |
dc0b027d | 954 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 955 | return 0; |
15c831bf | 956 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 957 | return 0; |
d25be546 TM |
958 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
959 | return 0; | |
b7391f44 | 960 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
961 | return 1; |
962 | } | |
963 | ||
dc0b027d | 964 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 965 | { |
dc0b027d | 966 | switch (fmode) { |
e7616923 TM |
967 | case FMODE_WRITE: |
968 | state->n_wronly++; | |
969 | break; | |
970 | case FMODE_READ: | |
971 | state->n_rdonly++; | |
972 | break; | |
973 | case FMODE_READ|FMODE_WRITE: | |
974 | state->n_rdwr++; | |
975 | } | |
dc0b027d | 976 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
977 | } |
978 | ||
dc0b027d | 979 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
980 | { |
981 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
982 | nfs4_stateid_copy(&state->stateid, stateid); |
983 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 984 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 985 | switch (fmode) { |
003707c7 TM |
986 | case FMODE_READ: |
987 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
988 | break; | |
989 | case FMODE_WRITE: | |
990 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
991 | break; | |
992 | case FMODE_READ|FMODE_WRITE: | |
993 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
994 | } | |
e7616923 TM |
995 | } |
996 | ||
dc0b027d | 997 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 998 | { |
8bda4e4c | 999 | write_seqlock(&state->seqlock); |
dc0b027d | 1000 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1001 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1002 | } |
1003 | ||
dc0b027d | 1004 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1005 | { |
8bda4e4c TM |
1006 | /* |
1007 | * Protect the call to nfs4_state_set_mode_locked and | |
1008 | * serialise the stateid update | |
1009 | */ | |
1010 | write_seqlock(&state->seqlock); | |
003707c7 | 1011 | if (deleg_stateid != NULL) { |
f597c537 | 1012 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1013 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1014 | } | |
1015 | if (open_stateid != NULL) | |
dc0b027d | 1016 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1017 | write_sequnlock(&state->seqlock); |
1018 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1019 | update_open_stateflags(state, fmode); |
ec073428 | 1020 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1021 | } |
1022 | ||
dc0b027d | 1023 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1024 | { |
1025 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1026 | struct nfs_delegation *deleg_cur; | |
1027 | int ret = 0; | |
1028 | ||
dc0b027d | 1029 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1030 | |
1031 | rcu_read_lock(); | |
1032 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1033 | if (deleg_cur == NULL) | |
1034 | goto no_delegation; | |
1035 | ||
1036 | spin_lock(&deleg_cur->lock); | |
1037 | if (nfsi->delegation != deleg_cur || | |
d25be546 | 1038 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1039 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1040 | goto no_delegation_unlock; |
1041 | ||
1042 | if (delegation == NULL) | |
1043 | delegation = &deleg_cur->stateid; | |
f597c537 | 1044 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1045 | goto no_delegation_unlock; |
1046 | ||
b7391f44 | 1047 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1048 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1049 | ret = 1; |
1050 | no_delegation_unlock: | |
1051 | spin_unlock(&deleg_cur->lock); | |
1052 | no_delegation: | |
1053 | rcu_read_unlock(); | |
1054 | ||
1055 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1056 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1057 | ret = 1; |
1058 | } | |
1059 | ||
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | ||
dc0b027d | 1064 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1065 | { |
1066 | struct nfs_delegation *delegation; | |
1067 | ||
1068 | rcu_read_lock(); | |
1069 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1070 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1071 | rcu_read_unlock(); |
1072 | return; | |
1073 | } | |
1074 | rcu_read_unlock(); | |
57ec14c5 | 1075 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1076 | } |
1077 | ||
6ee41268 | 1078 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1079 | { |
1080 | struct nfs4_state *state = opendata->state; | |
1081 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1082 | struct nfs_delegation *delegation; | |
f448badd | 1083 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1084 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1085 | nfs4_stateid stateid; |
1086 | int ret = -EAGAIN; | |
1087 | ||
aac00a8d | 1088 | for (;;) { |
dc0b027d | 1089 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1090 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1091 | if (can_open_cached(state, fmode, open_mode)) { |
1092 | update_open_stateflags(state, fmode); | |
6ee41268 | 1093 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1094 | goto out_return_state; |
1095 | } | |
1096 | spin_unlock(&state->owner->so_lock); | |
1097 | } | |
34310430 TM |
1098 | rcu_read_lock(); |
1099 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1100 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1101 | rcu_read_unlock(); |
aac00a8d | 1102 | break; |
34310430 | 1103 | } |
aac00a8d | 1104 | /* Save the delegation */ |
f597c537 | 1105 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1106 | rcu_read_unlock(); |
fa332941 | 1107 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1108 | if (!opendata->is_recover) { |
1109 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1110 | if (ret != 0) | |
1111 | goto out; | |
1112 | } | |
aac00a8d | 1113 | ret = -EAGAIN; |
34310430 TM |
1114 | |
1115 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1116 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1117 | goto out_return_state; |
aac00a8d | 1118 | } |
aac00a8d TM |
1119 | out: |
1120 | return ERR_PTR(ret); | |
1121 | out_return_state: | |
1122 | atomic_inc(&state->count); | |
1123 | return state; | |
1124 | } | |
1125 | ||
e23008ec AA |
1126 | static void |
1127 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1128 | { | |
1129 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1130 | struct nfs_delegation *delegation; | |
1131 | int delegation_flags = 0; | |
1132 | ||
1133 | rcu_read_lock(); | |
1134 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1135 | if (delegation) | |
1136 | delegation_flags = delegation->flags; | |
1137 | rcu_read_unlock(); | |
1138 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1139 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1140 | "returning a delegation for " | |
1141 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1142 | clp->cl_hostname); | |
1143 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1144 | nfs_inode_set_delegation(state->inode, | |
1145 | data->owner->so_cred, | |
1146 | &data->o_res); | |
1147 | else | |
1148 | nfs_inode_reclaim_delegation(state->inode, | |
1149 | data->owner->so_cred, | |
1150 | &data->o_res); | |
1151 | } | |
1152 | ||
1153 | /* | |
1154 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1155 | * and update the nfs4_state. | |
1156 | */ | |
1157 | static struct nfs4_state * | |
1158 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1159 | { | |
1160 | struct inode *inode = data->state->inode; | |
1161 | struct nfs4_state *state = data->state; | |
1162 | int ret; | |
1163 | ||
1164 | if (!data->rpc_done) { | |
1165 | ret = data->rpc_status; | |
1166 | goto err; | |
1167 | } | |
1168 | ||
1169 | ret = -ESTALE; | |
1170 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1171 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1172 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1173 | goto err; | |
1174 | ||
1175 | ret = -ENOMEM; | |
1176 | state = nfs4_get_open_state(inode, data->owner); | |
1177 | if (state == NULL) | |
1178 | goto err; | |
1179 | ||
1180 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1181 | if (ret) | |
1182 | goto err; | |
1183 | ||
1184 | if (data->o_res.delegation_type != 0) | |
1185 | nfs4_opendata_check_deleg(data, state); | |
1186 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1187 | data->o_arg.fmode); | |
1188 | ||
1189 | return state; | |
1190 | err: | |
1191 | return ERR_PTR(ret); | |
1192 | ||
1193 | } | |
1194 | ||
1195 | static struct nfs4_state * | |
1196 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1197 | { |
1198 | struct inode *inode; | |
1199 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1200 | int ret; |
24ac23ab | 1201 | |
aac00a8d | 1202 | if (!data->rpc_done) { |
6ee41268 | 1203 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1204 | goto out; |
1205 | } | |
1206 | ||
1b370bc2 | 1207 | ret = -EAGAIN; |
24ac23ab | 1208 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1209 | goto err; |
24ac23ab | 1210 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1211 | ret = PTR_ERR(inode); |
03f28e3a | 1212 | if (IS_ERR(inode)) |
1b370bc2 TM |
1213 | goto err; |
1214 | ret = -ENOMEM; | |
24ac23ab TM |
1215 | state = nfs4_get_open_state(inode, data->owner); |
1216 | if (state == NULL) | |
1b370bc2 | 1217 | goto err_put_inode; |
e23008ec AA |
1218 | if (data->o_res.delegation_type != 0) |
1219 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1220 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1221 | data->o_arg.fmode); |
24ac23ab | 1222 | iput(inode); |
aac00a8d | 1223 | out: |
7aa262b5 | 1224 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1225 | return state; |
1b370bc2 TM |
1226 | err_put_inode: |
1227 | iput(inode); | |
1228 | err: | |
1229 | return ERR_PTR(ret); | |
24ac23ab TM |
1230 | } |
1231 | ||
e23008ec AA |
1232 | static struct nfs4_state * |
1233 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1234 | { | |
1235 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1236 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1237 | return _nfs4_opendata_to_nfs4_state(data); | |
1238 | } | |
1239 | ||
864472e9 TM |
1240 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1241 | { | |
1242 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1243 | struct nfs_open_context *ctx; | |
1244 | ||
1245 | spin_lock(&state->inode->i_lock); | |
1246 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1247 | if (ctx->state != state) | |
1248 | continue; | |
1249 | get_nfs_open_context(ctx); | |
1250 | spin_unlock(&state->inode->i_lock); | |
1251 | return ctx; | |
1252 | } | |
1253 | spin_unlock(&state->inode->i_lock); | |
1254 | return ERR_PTR(-ENOENT); | |
1255 | } | |
1256 | ||
4a1c0893 TM |
1257 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1258 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1259 | { |
1260 | struct nfs4_opendata *opendata; | |
1261 | ||
4a1c0893 TM |
1262 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1263 | NULL, claim, GFP_NOFS); | |
6f220ed5 TM |
1264 | if (opendata == NULL) |
1265 | return ERR_PTR(-ENOMEM); | |
1266 | opendata->state = state; | |
1267 | atomic_inc(&state->count); | |
1268 | return opendata; | |
1269 | } | |
1270 | ||
dc0b027d | 1271 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1272 | { |
2ced46c2 | 1273 | struct nfs4_state *newstate; |
864472e9 TM |
1274 | int ret; |
1275 | ||
dc0b027d TM |
1276 | opendata->o_arg.open_flags = 0; |
1277 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1278 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1279 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1280 | nfs4_init_opendata_res(opendata); | |
b257957e | 1281 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1282 | if (ret != 0) |
1283 | return ret; | |
2ced46c2 | 1284 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1285 | if (IS_ERR(newstate)) |
1286 | return PTR_ERR(newstate); | |
643168c2 | 1287 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1288 | *res = newstate; |
864472e9 TM |
1289 | return 0; |
1290 | } | |
1291 | ||
1292 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1293 | { | |
864472e9 | 1294 | struct nfs4_state *newstate; |
864472e9 TM |
1295 | int ret; |
1296 | ||
1297 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1298 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1299 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1300 | smp_rmb(); |
1301 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1302 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1303 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1304 | if (ret != 0) |
1305 | return ret; | |
2ced46c2 TM |
1306 | if (newstate != state) |
1307 | return -ESTALE; | |
864472e9 TM |
1308 | } |
1309 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1310 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1311 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1312 | if (ret != 0) |
1313 | return ret; | |
2ced46c2 TM |
1314 | if (newstate != state) |
1315 | return -ESTALE; | |
864472e9 TM |
1316 | } |
1317 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1318 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1319 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1320 | if (ret != 0) |
1321 | return ret; | |
2ced46c2 TM |
1322 | if (newstate != state) |
1323 | return -ESTALE; | |
864472e9 | 1324 | } |
1ac7e2fd TM |
1325 | /* |
1326 | * We may have performed cached opens for all three recoveries. | |
1327 | * Check if we need to update the current stateid. | |
1328 | */ | |
1329 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1330 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1331 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1332 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1333 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1334 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1335 | } |
864472e9 TM |
1336 | return 0; |
1337 | } | |
1338 | ||
1da177e4 LT |
1339 | /* |
1340 | * OPEN_RECLAIM: | |
1341 | * reclaim state on the server after a reboot. | |
1da177e4 | 1342 | */ |
539cd03a | 1343 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1344 | { |
1ac7e2fd | 1345 | struct nfs_delegation *delegation; |
864472e9 | 1346 | struct nfs4_opendata *opendata; |
dc0b027d | 1347 | fmode_t delegation_type = 0; |
1da177e4 LT |
1348 | int status; |
1349 | ||
4a1c0893 TM |
1350 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1351 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1352 | if (IS_ERR(opendata)) |
1353 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1354 | rcu_read_lock(); |
1355 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1356 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1357 | delegation_type = delegation->type; |
1ac7e2fd | 1358 | rcu_read_unlock(); |
864472e9 TM |
1359 | opendata->o_arg.u.delegation_type = delegation_type; |
1360 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1361 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1362 | return status; |
1363 | } | |
1364 | ||
539cd03a | 1365 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1366 | { |
1367 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1368 | struct nfs4_exception exception = { }; | |
1369 | int err; | |
1370 | do { | |
539cd03a | 1371 | err = _nfs4_do_open_reclaim(ctx, state); |
49f9a0fa TM |
1372 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1373 | continue; | |
168667c4 | 1374 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1375 | break; |
1376 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1377 | } while (exception.retry); |
1378 | return err; | |
1379 | } | |
1380 | ||
864472e9 TM |
1381 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1382 | { | |
1383 | struct nfs_open_context *ctx; | |
1384 | int ret; | |
1385 | ||
1386 | ctx = nfs4_state_find_open_context(state); | |
1387 | if (IS_ERR(ctx)) | |
91876b13 | 1388 | return -EAGAIN; |
539cd03a | 1389 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1390 | put_nfs_open_context(ctx); |
1391 | return ret; | |
1392 | } | |
1393 | ||
db4f2e63 | 1394 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1395 | { |
be76b5b6 TM |
1396 | switch (err) { |
1397 | default: | |
1398 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1399 | "%d.\n", __func__, err); | |
1400 | case 0: | |
1401 | case -ENOENT: | |
1402 | case -ESTALE: | |
1403 | break; | |
1404 | case -NFS4ERR_BADSESSION: | |
1405 | case -NFS4ERR_BADSLOT: | |
1406 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1407 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1408 | case -NFS4ERR_DEADSESSION: | |
1409 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1410 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1411 | return -EAGAIN; | |
1412 | case -NFS4ERR_STALE_CLIENTID: | |
1413 | case -NFS4ERR_STALE_STATEID: | |
1414 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1415 | case -NFS4ERR_EXPIRED: | |
1416 | /* Don't recall a delegation if it was lost */ | |
1417 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1418 | return -EAGAIN; | |
1419 | case -NFS4ERR_DELEG_REVOKED: | |
1420 | case -NFS4ERR_ADMIN_REVOKED: | |
1421 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1422 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1423 | nfs_inode_find_state_and_recover(state->inode, |
1424 | stateid); | |
1425 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1426 | return 0; |
1427 | case -NFS4ERR_DELAY: | |
1428 | case -NFS4ERR_GRACE: | |
1429 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1430 | ssleep(1); | |
1431 | return -EAGAIN; | |
db4f2e63 TM |
1432 | case -ENOMEM: |
1433 | case -NFS4ERR_DENIED: | |
1434 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1435 | return 0; | |
be76b5b6 | 1436 | } |
1da177e4 LT |
1437 | return err; |
1438 | } | |
1439 | ||
db4f2e63 TM |
1440 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1441 | { | |
1442 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1443 | struct nfs4_opendata *opendata; | |
1444 | int err; | |
1445 | ||
1446 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1447 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1448 | if (IS_ERR(opendata)) | |
1449 | return PTR_ERR(opendata); | |
1450 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1451 | err = nfs4_open_recover(opendata, state); | |
1452 | nfs4_opendata_put(opendata); | |
1453 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1454 | } | |
1455 | ||
cdd4e68b TM |
1456 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1457 | { | |
1458 | struct nfs4_opendata *data = calldata; | |
1459 | ||
1460 | data->rpc_status = task->tk_status; | |
26e976a8 | 1461 | if (data->rpc_status == 0) { |
f597c537 | 1462 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1463 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1464 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1465 | data->rpc_done = 1; |
26e976a8 | 1466 | } |
cdd4e68b TM |
1467 | } |
1468 | ||
1469 | static void nfs4_open_confirm_release(void *calldata) | |
1470 | { | |
1471 | struct nfs4_opendata *data = calldata; | |
1472 | struct nfs4_state *state = NULL; | |
1473 | ||
1474 | /* If this request hasn't been cancelled, do nothing */ | |
1475 | if (data->cancelled == 0) | |
1476 | goto out_free; | |
1477 | /* In case of error, no cleanup! */ | |
3e309914 | 1478 | if (!data->rpc_done) |
cdd4e68b | 1479 | goto out_free; |
cdd4e68b | 1480 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1481 | if (!IS_ERR(state)) |
643168c2 | 1482 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1483 | out_free: |
c6d00e63 | 1484 | nfs4_opendata_put(data); |
cdd4e68b TM |
1485 | } |
1486 | ||
1487 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1488 | .rpc_call_done = nfs4_open_confirm_done, |
1489 | .rpc_release = nfs4_open_confirm_release, | |
1490 | }; | |
1491 | ||
1492 | /* | |
1493 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1494 | */ | |
1495 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1496 | { | |
1497 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1498 | struct rpc_task *task; | |
5138fde0 TM |
1499 | struct rpc_message msg = { |
1500 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1501 | .rpc_argp = &data->c_arg, | |
1502 | .rpc_resp = &data->c_res, | |
1503 | .rpc_cred = data->owner->so_cred, | |
1504 | }; | |
c970aa85 TM |
1505 | struct rpc_task_setup task_setup_data = { |
1506 | .rpc_client = server->client, | |
5138fde0 | 1507 | .rpc_message = &msg, |
c970aa85 TM |
1508 | .callback_ops = &nfs4_open_confirm_ops, |
1509 | .callback_data = data, | |
101070ca | 1510 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1511 | .flags = RPC_TASK_ASYNC, |
1512 | }; | |
1da177e4 LT |
1513 | int status; |
1514 | ||
c6d00e63 | 1515 | kref_get(&data->kref); |
3e309914 TM |
1516 | data->rpc_done = 0; |
1517 | data->rpc_status = 0; | |
5138fde0 | 1518 | data->timestamp = jiffies; |
c970aa85 | 1519 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1520 | if (IS_ERR(task)) |
cdd4e68b | 1521 | return PTR_ERR(task); |
cdd4e68b TM |
1522 | status = nfs4_wait_for_completion_rpc_task(task); |
1523 | if (status != 0) { | |
1524 | data->cancelled = 1; | |
1525 | smp_wmb(); | |
1526 | } else | |
1527 | status = data->rpc_status; | |
e6b3c4db | 1528 | rpc_put_task(task); |
1da177e4 LT |
1529 | return status; |
1530 | } | |
1531 | ||
24ac23ab | 1532 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1533 | { |
24ac23ab TM |
1534 | struct nfs4_opendata *data = calldata; |
1535 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1536 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1537 | |
24ac23ab | 1538 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1539 | goto out_wait; |
aac00a8d TM |
1540 | /* |
1541 | * Check if we still need to send an OPEN call, or if we can use | |
1542 | * a delegation instead. | |
1543 | */ | |
1544 | if (data->state != NULL) { | |
1545 | struct nfs_delegation *delegation; | |
1546 | ||
dc0b027d | 1547 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1548 | goto out_no_action; |
aac00a8d TM |
1549 | rcu_read_lock(); |
1550 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1551 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1552 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1553 | can_open_delegated(delegation, data->o_arg.fmode)) |
1554 | goto unlock_no_action; | |
aac00a8d TM |
1555 | rcu_read_unlock(); |
1556 | } | |
95b72eb0 | 1557 | /* Update client id. */ |
549b19cc | 1558 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1559 | switch (data->o_arg.claim) { |
1560 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1561 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1562 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1563 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1564 | case NFS4_OPEN_CLAIM_FH: |
1565 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1566 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1567 | } | |
26e976a8 | 1568 | data->timestamp = jiffies; |
035168ab | 1569 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1570 | &data->o_arg.seq_args, |
2240a9e2 TM |
1571 | &data->o_res.seq_res, |
1572 | task) != 0) | |
1573 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1574 | |
1575 | /* Set the create mode (note dependency on the session type) */ | |
1576 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1577 | if (data->o_arg.open_flags & O_EXCL) { | |
1578 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1579 | if (nfs4_has_persistent_session(clp)) | |
1580 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1581 | else if (clp->cl_mvops->minor_version > 0) | |
1582 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1583 | } | |
6ee41268 | 1584 | return; |
652f89f6 TM |
1585 | unlock_no_action: |
1586 | rcu_read_unlock(); | |
6ee41268 TM |
1587 | out_no_action: |
1588 | task->tk_action = NULL; | |
c8da19b9 | 1589 | out_wait: |
b75ad4cd | 1590 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1591 | } |
1592 | ||
24ac23ab TM |
1593 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1594 | { | |
1595 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1596 | |
24ac23ab | 1597 | data->rpc_status = task->tk_status; |
d898528c | 1598 | |
14516c3a TM |
1599 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1600 | return; | |
d898528c | 1601 | |
24ac23ab | 1602 | if (task->tk_status == 0) { |
807d66d8 TM |
1603 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1604 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1605 | case S_IFREG: |
1606 | break; | |
1607 | case S_IFLNK: | |
24ac23ab | 1608 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1609 | break; |
1610 | case S_IFDIR: | |
24ac23ab | 1611 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1612 | break; |
1613 | default: | |
24ac23ab | 1614 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1615 | } |
6f926b5b | 1616 | } |
26e976a8 | 1617 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1618 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1619 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1620 | } |
3e309914 | 1621 | data->rpc_done = 1; |
24ac23ab | 1622 | } |
6f926b5b | 1623 | |
24ac23ab TM |
1624 | static void nfs4_open_release(void *calldata) |
1625 | { | |
1626 | struct nfs4_opendata *data = calldata; | |
1627 | struct nfs4_state *state = NULL; | |
1628 | ||
1629 | /* If this request hasn't been cancelled, do nothing */ | |
1630 | if (data->cancelled == 0) | |
1631 | goto out_free; | |
1632 | /* In case of error, no cleanup! */ | |
3e309914 | 1633 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1634 | goto out_free; |
1635 | /* In case we need an open_confirm, no cleanup! */ | |
1636 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1637 | goto out_free; | |
24ac23ab | 1638 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1639 | if (!IS_ERR(state)) |
643168c2 | 1640 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1641 | out_free: |
c6d00e63 | 1642 | nfs4_opendata_put(data); |
24ac23ab TM |
1643 | } |
1644 | ||
1645 | static const struct rpc_call_ops nfs4_open_ops = { | |
1646 | .rpc_call_prepare = nfs4_open_prepare, | |
1647 | .rpc_call_done = nfs4_open_done, | |
1648 | .rpc_release = nfs4_open_release, | |
1649 | }; | |
1650 | ||
b257957e | 1651 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1652 | { |
1653 | struct inode *dir = data->dir->d_inode; | |
1654 | struct nfs_server *server = NFS_SERVER(dir); | |
1655 | struct nfs_openargs *o_arg = &data->o_arg; | |
1656 | struct nfs_openres *o_res = &data->o_res; | |
1657 | struct rpc_task *task; | |
5138fde0 TM |
1658 | struct rpc_message msg = { |
1659 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1660 | .rpc_argp = o_arg, | |
1661 | .rpc_resp = o_res, | |
1662 | .rpc_cred = data->owner->so_cred, | |
1663 | }; | |
c970aa85 TM |
1664 | struct rpc_task_setup task_setup_data = { |
1665 | .rpc_client = server->client, | |
5138fde0 | 1666 | .rpc_message = &msg, |
c970aa85 TM |
1667 | .callback_ops = &nfs4_open_ops, |
1668 | .callback_data = data, | |
101070ca | 1669 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1670 | .flags = RPC_TASK_ASYNC, |
1671 | }; | |
24ac23ab TM |
1672 | int status; |
1673 | ||
9d12b216 | 1674 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1675 | kref_get(&data->kref); |
3e309914 TM |
1676 | data->rpc_done = 0; |
1677 | data->rpc_status = 0; | |
2ced46c2 | 1678 | data->cancelled = 0; |
bdeca1b7 TM |
1679 | data->is_recover = 0; |
1680 | if (isrecover) { | |
8fe72bac | 1681 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1682 | data->is_recover = 1; |
1683 | } | |
c970aa85 | 1684 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1685 | if (IS_ERR(task)) |
1686 | return PTR_ERR(task); | |
1687 | status = nfs4_wait_for_completion_rpc_task(task); | |
1688 | if (status != 0) { | |
1689 | data->cancelled = 1; | |
1690 | smp_wmb(); | |
1691 | } else | |
1692 | status = data->rpc_status; | |
1693 | rpc_put_task(task); | |
1694 | ||
1695 | return status; | |
1696 | } | |
1697 | ||
1698 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1699 | { | |
1700 | struct inode *dir = data->dir->d_inode; | |
1701 | struct nfs_openres *o_res = &data->o_res; | |
1702 | int status; | |
1703 | ||
1704 | status = nfs4_run_open_task(data, 1); | |
1705 | if (status != 0 || !data->rpc_done) | |
1706 | return status; | |
1707 | ||
6926afd1 TM |
1708 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1709 | ||
b257957e AB |
1710 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1711 | status = _nfs4_proc_open_confirm(data); | |
1712 | if (status != 0) | |
1713 | return status; | |
1714 | } | |
1715 | ||
1716 | return status; | |
1717 | } | |
1718 | ||
6168f62c WAA |
1719 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1720 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1721 | struct nfs4_state *state, fmode_t fmode, |
1722 | int openflags) | |
6168f62c WAA |
1723 | { |
1724 | struct nfs_access_entry cache; | |
1725 | u32 mask; | |
1726 | ||
1727 | /* access call failed or for some reason the server doesn't | |
1728 | * support any access modes -- defer access call until later */ | |
1729 | if (opendata->o_res.access_supported == 0) | |
1730 | return 0; | |
1731 | ||
1732 | mask = 0; | |
bbd3a8ee | 1733 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1734 | * write mode bits, but POSIX allows the creating process to write. |
1735 | * use openflags to check for exec, because fmode won't | |
1736 | * always have FMODE_EXEC set when file open for exec. */ | |
1737 | if (openflags & __FMODE_EXEC) { | |
1738 | /* ONLY check for exec rights */ | |
1739 | mask = MAY_EXEC; | |
1740 | } else if (fmode & FMODE_READ) | |
1741 | mask = MAY_READ; | |
6168f62c WAA |
1742 | |
1743 | cache.cred = cred; | |
1744 | cache.jiffies = jiffies; | |
1745 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1746 | nfs_access_add_cache(state->inode, &cache); | |
1747 | ||
bbd3a8ee | 1748 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1749 | return 0; |
1750 | ||
1751 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1752 | nfs4_close_state(state, fmode); | |
998f40b5 | 1753 | return -EACCES; |
6168f62c WAA |
1754 | } |
1755 | ||
b257957e AB |
1756 | /* |
1757 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1758 | */ | |
1759 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1760 | { | |
1761 | struct inode *dir = data->dir->d_inode; | |
1762 | struct nfs_server *server = NFS_SERVER(dir); | |
1763 | struct nfs_openargs *o_arg = &data->o_arg; | |
1764 | struct nfs_openres *o_res = &data->o_res; | |
1765 | int status; | |
1766 | ||
1767 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1768 | if (!data->rpc_done) |
1769 | return status; | |
1770 | if (status != 0) { | |
1771 | if (status == -NFS4ERR_BADNAME && | |
1772 | !(o_arg->open_flags & O_CREAT)) | |
1773 | return -ENOENT; | |
24ac23ab | 1774 | return status; |
08ef7bd3 | 1775 | } |
24ac23ab | 1776 | |
6926afd1 TM |
1777 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1778 | ||
90ff0c54 | 1779 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1780 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1781 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1782 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1783 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1784 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1785 | if (status != 0) |
24ac23ab | 1786 | return status; |
1da177e4 LT |
1787 | } |
1788 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1789 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1790 | return 0; |
1da177e4 LT |
1791 | } |
1792 | ||
d83217c1 AA |
1793 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1794 | { | |
1795 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1796 | } | |
1797 | ||
1da177e4 LT |
1798 | /* |
1799 | * OPEN_EXPIRED: | |
1800 | * reclaim state on the server after a network partition. | |
1801 | * Assumes caller holds the appropriate lock | |
1802 | */ | |
539cd03a | 1803 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1804 | { |
e56e0b78 | 1805 | struct nfs4_opendata *opendata; |
864472e9 | 1806 | int ret; |
1da177e4 | 1807 | |
4a1c0893 | 1808 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1809 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1810 | if (IS_ERR(opendata)) |
1811 | return PTR_ERR(opendata); | |
864472e9 | 1812 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1813 | if (ret == -ESTALE) |
3d4ff43d | 1814 | d_drop(ctx->dentry); |
c6d00e63 | 1815 | nfs4_opendata_put(opendata); |
864472e9 | 1816 | return ret; |
1da177e4 LT |
1817 | } |
1818 | ||
a9ed2e25 | 1819 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1820 | { |
539cd03a | 1821 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1822 | struct nfs4_exception exception = { }; |
1823 | int err; | |
1824 | ||
1825 | do { | |
539cd03a | 1826 | err = _nfs4_open_expired(ctx, state); |
49f9a0fa TM |
1827 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1828 | continue; | |
a9ed2e25 TM |
1829 | switch (err) { |
1830 | default: | |
1831 | goto out; | |
1832 | case -NFS4ERR_GRACE: | |
1833 | case -NFS4ERR_DELAY: | |
1834 | nfs4_handle_exception(server, err, &exception); | |
1835 | err = 0; | |
1836 | } | |
202b50dc | 1837 | } while (exception.retry); |
a9ed2e25 | 1838 | out: |
202b50dc TM |
1839 | return err; |
1840 | } | |
1841 | ||
1da177e4 LT |
1842 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1843 | { | |
1da177e4 | 1844 | struct nfs_open_context *ctx; |
864472e9 | 1845 | int ret; |
1da177e4 | 1846 | |
864472e9 TM |
1847 | ctx = nfs4_state_find_open_context(state); |
1848 | if (IS_ERR(ctx)) | |
91876b13 | 1849 | return -EAGAIN; |
539cd03a | 1850 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1851 | put_nfs_open_context(ctx); |
1852 | return ret; | |
1da177e4 LT |
1853 | } |
1854 | ||
f062eb6c | 1855 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1856 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1857 | { |
f062eb6c | 1858 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 1859 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
1860 | struct nfs_delegation *delegation; |
1861 | struct rpc_cred *cred = NULL; | |
1862 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
1863 | |
1864 | /* If a state reset has been done, test_stateid is unneeded */ | |
1865 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1866 | return; | |
1867 | ||
ab7cb0df TM |
1868 | /* Get the delegation credential for use by test/free_stateid */ |
1869 | rcu_read_lock(); | |
1870 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1871 | if (delegation != NULL && | |
1872 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
1873 | cred = get_rpccred(delegation->cred); | |
1874 | rcu_read_unlock(); | |
1875 | status = nfs41_test_stateid(server, stateid, cred); | |
1876 | } else | |
1877 | rcu_read_unlock(); | |
1878 | ||
3e60ffdd CL |
1879 | if (status != NFS_OK) { |
1880 | /* Free the stateid unless the server explicitly | |
1881 | * informs us the stateid is unrecognized. */ | |
1882 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1883 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 1884 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1885 | |
6938867e BS |
1886 | write_seqlock(&state->seqlock); |
1887 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1888 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1889 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1890 | } | |
ab7cb0df TM |
1891 | |
1892 | if (cred != NULL) | |
1893 | put_rpccred(cred); | |
3e60ffdd CL |
1894 | } |
1895 | ||
1896 | /** | |
1897 | * nfs41_check_open_stateid - possibly free an open stateid | |
1898 | * | |
1899 | * @state: NFSv4 state for an inode | |
1900 | * | |
1901 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1902 | * Otherwise a negative NFS4ERR value is returned. | |
1903 | */ | |
1904 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1905 | { | |
1906 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1907 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 1908 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
1909 | int status; |
1910 | ||
1911 | /* If a state reset has been done, test_stateid is unneeded */ | |
1912 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1913 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1914 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1915 | return -NFS4ERR_BAD_STATEID; | |
1916 | ||
ab7cb0df | 1917 | status = nfs41_test_stateid(server, stateid, cred); |
3e60ffdd CL |
1918 | if (status != NFS_OK) { |
1919 | /* Free the stateid unless the server explicitly | |
1920 | * informs us the stateid is unrecognized. */ | |
1921 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1922 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
1923 | |
1924 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1925 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1926 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 1927 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
1928 | } |
1929 | return status; | |
1930 | } | |
1931 | ||
1932 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1933 | { | |
eb64cf96 | 1934 | int status; |
b01dd1d8 | 1935 | |
3e60ffdd CL |
1936 | nfs41_clear_delegation_stateid(state); |
1937 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1938 | if (status != NFS_OK) |
1939 | status = nfs4_open_expired(sp, state); | |
1940 | return status; | |
f062eb6c BS |
1941 | } |
1942 | #endif | |
1943 | ||
aa53ed54 JL |
1944 | /* |
1945 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1946 | * fields corresponding to attributes that were used to store the verifier. | |
1947 | * Make sure we clobber those fields in the later setattr call | |
1948 | */ | |
1949 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1950 | { | |
1951 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1952 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1953 | sattr->ia_valid |= ATTR_ATIME; | |
1954 | ||
1955 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1956 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1957 | sattr->ia_valid |= ATTR_MTIME; | |
1958 | } | |
1959 | ||
c21443c2 TM |
1960 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1961 | fmode_t fmode, | |
1962 | int flags, | |
3efb9722 | 1963 | struct nfs_open_context *ctx) |
c21443c2 TM |
1964 | { |
1965 | struct nfs4_state_owner *sp = opendata->owner; | |
1966 | struct nfs_server *server = sp->so_server; | |
275bb307 | 1967 | struct dentry *dentry; |
c21443c2 TM |
1968 | struct nfs4_state *state; |
1969 | unsigned int seq; | |
1970 | int ret; | |
1971 | ||
1972 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
1973 | ||
1974 | ret = _nfs4_proc_open(opendata); | |
1975 | if (ret != 0) | |
1976 | goto out; | |
1977 | ||
1978 | state = nfs4_opendata_to_nfs4_state(opendata); | |
1979 | ret = PTR_ERR(state); | |
1980 | if (IS_ERR(state)) | |
1981 | goto out; | |
1982 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
1983 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
1984 | ||
275bb307 TM |
1985 | dentry = opendata->dentry; |
1986 | if (dentry->d_inode == NULL) { | |
1987 | /* FIXME: Is this d_drop() ever needed? */ | |
1988 | d_drop(dentry); | |
1989 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
1990 | if (dentry == NULL) { | |
1991 | dentry = opendata->dentry; | |
1992 | } else if (dentry != ctx->dentry) { | |
1993 | dput(ctx->dentry); | |
1994 | ctx->dentry = dget(dentry); | |
1995 | } | |
1996 | nfs_set_verifier(dentry, | |
1997 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
1998 | } | |
1999 | ||
c21443c2 TM |
2000 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2001 | if (ret != 0) | |
2002 | goto out; | |
2003 | ||
3efb9722 | 2004 | ctx->state = state; |
c45ffdd2 TM |
2005 | if (dentry->d_inode == state->inode) { |
2006 | nfs_inode_attach_open_context(ctx); | |
2007 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2008 | nfs4_schedule_stateid_recovery(server, state); | |
2009 | } | |
c21443c2 TM |
2010 | out: |
2011 | return ret; | |
2012 | } | |
2013 | ||
1da177e4 | 2014 | /* |
24ac23ab | 2015 | * Returns a referenced nfs4_state |
1da177e4 | 2016 | */ |
82be417a | 2017 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2018 | struct nfs_open_context *ctx, |
82be417a | 2019 | int flags, |
3efb9722 | 2020 | struct iattr *sattr) |
1da177e4 LT |
2021 | { |
2022 | struct nfs4_state_owner *sp; | |
2023 | struct nfs4_state *state = NULL; | |
2024 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2025 | struct nfs4_opendata *opendata; |
4197a055 TM |
2026 | struct dentry *dentry = ctx->dentry; |
2027 | struct rpc_cred *cred = ctx->cred; | |
2028 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2029 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2030 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
aac00a8d | 2031 | int status; |
1da177e4 LT |
2032 | |
2033 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2034 | status = -ENOMEM; |
d1e284d5 TM |
2035 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2036 | if (sp == NULL) { | |
1da177e4 LT |
2037 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2038 | goto out_err; | |
2039 | } | |
58d9714a TM |
2040 | status = nfs4_recover_expired_lease(server); |
2041 | if (status != 0) | |
b4454fe1 | 2042 | goto err_put_state_owner; |
82a2c1b7 AV |
2043 | if (dentry->d_inode != NULL) |
2044 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2045 | status = -ENOMEM; |
49f9a0fa TM |
2046 | if (dentry->d_inode) |
2047 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2048 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
49f9a0fa | 2049 | claim, GFP_KERNEL); |
e56e0b78 | 2050 | if (opendata == NULL) |
95d35cb4 | 2051 | goto err_put_state_owner; |
1da177e4 | 2052 | |
82be417a AA |
2053 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2054 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2055 | if (!opendata->f_attr.mdsthreshold) | |
2056 | goto err_opendata_put; | |
1549210f | 2057 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2058 | } |
82a2c1b7 AV |
2059 | if (dentry->d_inode != NULL) |
2060 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2061 | |
3efb9722 | 2062 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c WAA |
2063 | if (status != 0) |
2064 | goto err_opendata_put; | |
3efb9722 | 2065 | state = ctx->state; |
6168f62c | 2066 | |
549b19cc TM |
2067 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2068 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2069 | nfs4_exclusive_attrset(opendata, sattr); |
2070 | ||
2071 | nfs_fattr_init(opendata->o_res.f_attr); | |
2072 | status = nfs4_do_setattr(state->inode, cred, | |
2073 | opendata->o_res.f_attr, sattr, | |
2074 | state); | |
2075 | if (status == 0) | |
2076 | nfs_setattr_update_inode(state->inode, sattr); | |
2077 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2078 | } | |
82be417a AA |
2079 | |
2080 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2081 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2082 | else | |
2083 | kfree(opendata->f_attr.mdsthreshold); | |
2084 | opendata->f_attr.mdsthreshold = NULL; | |
2085 | ||
c6d00e63 | 2086 | nfs4_opendata_put(opendata); |
1da177e4 | 2087 | nfs4_put_state_owner(sp); |
1da177e4 | 2088 | return 0; |
c6d00e63 | 2089 | err_opendata_put: |
82be417a | 2090 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2091 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2092 | err_put_state_owner: |
2093 | nfs4_put_state_owner(sp); | |
1da177e4 | 2094 | out_err: |
1da177e4 LT |
2095 | return status; |
2096 | } | |
2097 | ||
2098 | ||
82be417a | 2099 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2100 | struct nfs_open_context *ctx, |
82be417a | 2101 | int flags, |
4197a055 | 2102 | struct iattr *sattr) |
1da177e4 | 2103 | { |
49f9a0fa | 2104 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2105 | struct nfs4_exception exception = { }; |
2106 | struct nfs4_state *res; | |
2107 | int status; | |
2108 | ||
2109 | do { | |
3efb9722 TM |
2110 | status = _nfs4_do_open(dir, ctx, flags, sattr); |
2111 | res = ctx->state; | |
1da177e4 LT |
2112 | if (status == 0) |
2113 | break; | |
2114 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2115 | * book-keeping w.r.t. state-changing operations | |
2116 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2117 | * It is actually a sign of a bug on the client or on the server. | |
2118 | * | |
2119 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2120 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2121 | * have unhashed the old state_owner for us, and that we can |
2122 | * therefore safely retry using a new one. We should still warn | |
2123 | * the user though... | |
2124 | */ | |
2125 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2126 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2127 | " returned a bad sequence-id error!\n", |
2128 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2129 | exception.retry = 1; |
2130 | continue; | |
2131 | } | |
550f5747 TM |
2132 | /* |
2133 | * BAD_STATEID on OPEN means that the server cancelled our | |
2134 | * state before it received the OPEN_CONFIRM. | |
2135 | * Recover by retrying the request as per the discussion | |
2136 | * on Page 181 of RFC3530. | |
2137 | */ | |
2138 | if (status == -NFS4ERR_BAD_STATEID) { | |
2139 | exception.retry = 1; | |
2140 | continue; | |
2141 | } | |
aac00a8d TM |
2142 | if (status == -EAGAIN) { |
2143 | /* We must have found a delegation */ | |
2144 | exception.retry = 1; | |
2145 | continue; | |
2146 | } | |
49f9a0fa TM |
2147 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2148 | continue; | |
2149 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2150 | status, &exception)); |
2151 | } while (exception.retry); | |
2152 | return res; | |
2153 | } | |
2154 | ||
659bfcd6 TM |
2155 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2156 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2157 | struct nfs4_state *state) | |
1da177e4 | 2158 | { |
3e4f6290 | 2159 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2160 | struct nfs_setattrargs arg = { |
3e4f6290 | 2161 | .fh = NFS_FH(inode), |
1da177e4 LT |
2162 | .iap = sattr, |
2163 | .server = server, | |
2164 | .bitmask = server->attr_bitmask, | |
2165 | }; | |
2166 | struct nfs_setattrres res = { | |
2167 | .fattr = fattr, | |
2168 | .server = server, | |
2169 | }; | |
2170 | struct rpc_message msg = { | |
659bfcd6 TM |
2171 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2172 | .rpc_argp = &arg, | |
2173 | .rpc_resp = &res, | |
2174 | .rpc_cred = cred, | |
1da177e4 | 2175 | }; |
26e976a8 | 2176 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2177 | fmode_t fmode; |
2178 | bool truncate; | |
65e4308d | 2179 | int status; |
1da177e4 | 2180 | |
0e574af1 | 2181 | nfs_fattr_init(fattr); |
1da177e4 | 2182 | |
ee3ae84e TM |
2183 | /* Servers should only apply open mode checks for file size changes */ |
2184 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2185 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2186 | ||
2187 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2188 | /* Use that stateid */ | |
2189 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2190 | struct nfs_lockowner lockowner = { |
2191 | .l_owner = current->files, | |
2192 | .l_pid = current->tgid, | |
2193 | }; | |
4fc8796d | 2194 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2195 | &lockowner); |
08e9eac4 | 2196 | } else |
f597c537 | 2197 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2198 | |
7c513058 | 2199 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2200 | if (status == 0 && state != NULL) |
2201 | renew_lease(server, timestamp); | |
65e4308d | 2202 | return status; |
1da177e4 LT |
2203 | } |
2204 | ||
659bfcd6 TM |
2205 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2206 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2207 | struct nfs4_state *state) | |
1da177e4 | 2208 | { |
3e4f6290 | 2209 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2210 | struct nfs4_exception exception = { |
2211 | .state = state, | |
3114ea7a | 2212 | .inode = inode, |
a1d0b5ee | 2213 | }; |
1da177e4 LT |
2214 | int err; |
2215 | do { | |
451146be TM |
2216 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2217 | switch (err) { | |
2218 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2219 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2220 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2221 | "applying open mode checks to " | |
2222 | "a SETATTR that is not " | |
2223 | "changing file size.\n", | |
2224 | server->nfs_client->cl_hostname); | |
2225 | } | |
451146be TM |
2226 | if (state && !(state->state & FMODE_WRITE)) { |
2227 | err = -EBADF; | |
2228 | if (sattr->ia_valid & ATTR_OPEN) | |
2229 | err = -EACCES; | |
2230 | goto out; | |
2231 | } | |
2232 | } | |
2233 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2234 | } while (exception.retry); |
451146be | 2235 | out: |
1da177e4 LT |
2236 | return err; |
2237 | } | |
2238 | ||
2239 | struct nfs4_closedata { | |
2240 | struct inode *inode; | |
2241 | struct nfs4_state *state; | |
2242 | struct nfs_closeargs arg; | |
2243 | struct nfs_closeres res; | |
516a6af6 | 2244 | struct nfs_fattr fattr; |
26e976a8 | 2245 | unsigned long timestamp; |
f7e8917a FI |
2246 | bool roc; |
2247 | u32 roc_barrier; | |
1da177e4 LT |
2248 | }; |
2249 | ||
963d8fe5 | 2250 | static void nfs4_free_closedata(void *data) |
9512135d | 2251 | { |
963d8fe5 TM |
2252 | struct nfs4_closedata *calldata = data; |
2253 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2254 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2255 | |
f7e8917a FI |
2256 | if (calldata->roc) |
2257 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2258 | nfs4_put_open_state(calldata->state); |
2259 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2260 | nfs4_put_state_owner(sp); |
322b2b90 | 2261 | nfs_sb_deactive(sb); |
9512135d TM |
2262 | kfree(calldata); |
2263 | } | |
2264 | ||
88069f77 TM |
2265 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2266 | fmode_t fmode) | |
2267 | { | |
2268 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2269 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2270 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2271 | case FMODE_WRITE: | |
88069f77 | 2272 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2273 | break; |
2274 | case FMODE_READ: | |
88069f77 | 2275 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2276 | break; |
2277 | case 0: | |
2278 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2279 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2280 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2281 | } | |
88069f77 TM |
2282 | spin_unlock(&state->owner->so_lock); |
2283 | } | |
2284 | ||
963d8fe5 | 2285 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2286 | { |
963d8fe5 | 2287 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2288 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2289 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2290 | ||
a3ca5651 | 2291 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2292 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2293 | return; | |
1da177e4 LT |
2294 | /* hmm. we are done with the inode, and in the process of freeing |
2295 | * the state_owner. we keep this around to process errors | |
2296 | */ | |
1da177e4 LT |
2297 | switch (task->tk_status) { |
2298 | case 0: | |
f7e8917a FI |
2299 | if (calldata->roc) |
2300 | pnfs_roc_set_barrier(state->inode, | |
2301 | calldata->roc_barrier); | |
45328c35 | 2302 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2303 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2304 | nfs4_close_clear_stateid_flags(state, |
2305 | calldata->arg.fmode); | |
1da177e4 LT |
2306 | break; |
2307 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2308 | case -NFS4ERR_OLD_STATEID: |
2309 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2310 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2311 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2312 | break; |
1da177e4 | 2313 | default: |
72211dbe TM |
2314 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2315 | rpc_restart_call_prepare(task); | |
1da177e4 | 2316 | } |
72211dbe | 2317 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2318 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2319 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2320 | } |
2321 | ||
4ce70ada | 2322 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2323 | { |
4ce70ada | 2324 | struct nfs4_closedata *calldata = data; |
9512135d | 2325 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2326 | struct inode *inode = calldata->inode; |
88069f77 | 2327 | int call_close = 0; |
9512135d | 2328 | |
a3ca5651 | 2329 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2330 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2331 | goto out_wait; |
003707c7 | 2332 | |
88069f77 TM |
2333 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2334 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2335 | spin_lock(&state->owner->so_lock); |
003707c7 | 2336 | /* Calculate the change in open mode */ |
e7616923 | 2337 | if (state->n_rdwr == 0) { |
003707c7 | 2338 | if (state->n_rdonly == 0) { |
88069f77 TM |
2339 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2340 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2341 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2342 | } |
2343 | if (state->n_wronly == 0) { | |
88069f77 TM |
2344 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2345 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2346 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2347 | } |
e7616923 | 2348 | } |
5d422301 TM |
2349 | if (!nfs4_valid_open_stateid(state)) |
2350 | call_close = 0; | |
4cecb76f | 2351 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2352 | |
2353 | if (!call_close) { | |
963d8fe5 | 2354 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2355 | goto out_no_action; |
9512135d | 2356 | } |
88069f77 | 2357 | |
f7e8917a | 2358 | if (calldata->arg.fmode == 0) { |
88069f77 | 2359 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2360 | if (calldata->roc && |
b9536ad5 AA |
2361 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2362 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2363 | goto out_wait; |
b9536ad5 | 2364 | } |
f7e8917a | 2365 | } |
88069f77 | 2366 | |
516a6af6 | 2367 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2368 | calldata->timestamp = jiffies; |
7fdab069 | 2369 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2370 | &calldata->arg.seq_args, |
2371 | &calldata->res.seq_res, | |
2240a9e2 TM |
2372 | task) != 0) |
2373 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2374 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2375 | return; |
2376 | out_no_action: | |
2377 | task->tk_action = NULL; | |
2378 | out_wait: | |
2379 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2380 | } |
2381 | ||
963d8fe5 | 2382 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2383 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2384 | .rpc_call_done = nfs4_close_done, |
2385 | .rpc_release = nfs4_free_closedata, | |
2386 | }; | |
2387 | ||
1da177e4 LT |
2388 | /* |
2389 | * It is possible for data to be read/written from a mem-mapped file | |
2390 | * after the sys_close call (which hits the vfs layer as a flush). | |
2391 | * This means that we can't safely call nfsv4 close on a file until | |
2392 | * the inode is cleared. This in turn means that we are not good | |
2393 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2394 | * share state even when we are done with one of the three share | |
2395 | * stateid's in the inode. | |
2396 | * | |
2397 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2398 | */ | |
1f7977c1 | 2399 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2400 | { |
4a35bd41 | 2401 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2402 | struct nfs4_closedata *calldata; |
b39e625b TM |
2403 | struct nfs4_state_owner *sp = state->owner; |
2404 | struct rpc_task *task; | |
5138fde0 TM |
2405 | struct rpc_message msg = { |
2406 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2407 | .rpc_cred = state->owner->so_cred, | |
2408 | }; | |
c970aa85 TM |
2409 | struct rpc_task_setup task_setup_data = { |
2410 | .rpc_client = server->client, | |
5138fde0 | 2411 | .rpc_message = &msg, |
c970aa85 | 2412 | .callback_ops = &nfs4_close_ops, |
101070ca | 2413 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2414 | .flags = RPC_TASK_ASYNC, |
2415 | }; | |
9512135d | 2416 | int status = -ENOMEM; |
1da177e4 | 2417 | |
8535b2be | 2418 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2419 | if (calldata == NULL) |
9512135d | 2420 | goto out; |
9d12b216 | 2421 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2422 | calldata->inode = state->inode; |
1da177e4 | 2423 | calldata->state = state; |
4a35bd41 | 2424 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2425 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2426 | /* Serialization for the sequence id */ |
8535b2be | 2427 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2428 | if (calldata->arg.seqid == NULL) |
2429 | goto out_free_calldata; | |
dc0b027d | 2430 | calldata->arg.fmode = 0; |
a65318bf | 2431 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2432 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2433 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2434 | calldata->res.server = server; |
1f7977c1 | 2435 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2436 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2437 | |
1174dd1f TM |
2438 | msg.rpc_argp = &calldata->arg; |
2439 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2440 | task_setup_data.callback_data = calldata; |
2441 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2442 | if (IS_ERR(task)) |
2443 | return PTR_ERR(task); | |
a49c3c77 TM |
2444 | status = 0; |
2445 | if (wait) | |
2446 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2447 | rpc_put_task(task); |
a49c3c77 | 2448 | return status; |
9512135d TM |
2449 | out_free_calldata: |
2450 | kfree(calldata); | |
2451 | out: | |
b39e625b TM |
2452 | nfs4_put_open_state(state); |
2453 | nfs4_put_state_owner(sp); | |
9512135d | 2454 | return status; |
1da177e4 LT |
2455 | } |
2456 | ||
2b484297 | 2457 | static struct inode * |
cd9a1c0e | 2458 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2459 | { |
1da177e4 | 2460 | struct nfs4_state *state; |
1da177e4 | 2461 | |
565277f6 | 2462 | /* Protect against concurrent sillydeletes */ |
4197a055 | 2463 | state = nfs4_do_open(dir, ctx, open_flags, attr); |
f46e0bd3 TM |
2464 | if (IS_ERR(state)) |
2465 | return ERR_CAST(state); | |
275bb307 | 2466 | return state->inode; |
1da177e4 LT |
2467 | } |
2468 | ||
1185a552 | 2469 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2470 | { |
2471 | if (ctx->state == NULL) | |
2472 | return; | |
2473 | if (is_sync) | |
643168c2 | 2474 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2475 | else |
643168c2 | 2476 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2477 | } |
1da177e4 LT |
2478 | |
2479 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2480 | { | |
43652ad5 BH |
2481 | struct nfs4_server_caps_arg args = { |
2482 | .fhandle = fhandle, | |
2483 | }; | |
1da177e4 LT |
2484 | struct nfs4_server_caps_res res = {}; |
2485 | struct rpc_message msg = { | |
2486 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2487 | .rpc_argp = &args, |
1da177e4 LT |
2488 | .rpc_resp = &res, |
2489 | }; | |
2490 | int status; | |
2491 | ||
7c513058 | 2492 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2493 | if (status == 0) { |
2494 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2495 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2496 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2497 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2498 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2499 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2500 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2501 | server->caps |= NFS_CAP_ACLS; | |
2502 | if (res.has_links != 0) | |
2503 | server->caps |= NFS_CAP_HARDLINKS; | |
2504 | if (res.has_symlinks != 0) | |
2505 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2506 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2507 | server->caps |= NFS_CAP_FILEID; | |
2508 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2509 | server->caps |= NFS_CAP_MODE; | |
2510 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2511 | server->caps |= NFS_CAP_NLINK; | |
2512 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2513 | server->caps |= NFS_CAP_OWNER; | |
2514 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2515 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2516 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2517 | server->caps |= NFS_CAP_ATIME; | |
2518 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2519 | server->caps |= NFS_CAP_CTIME; | |
2520 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2521 | server->caps |= NFS_CAP_MTIME; | |
2522 | ||
a65318bf TM |
2523 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2524 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2525 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2526 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2527 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2528 | } |
cccef3b9 | 2529 | |
1da177e4 LT |
2530 | return status; |
2531 | } | |
2532 | ||
55a97593 | 2533 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2534 | { |
2535 | struct nfs4_exception exception = { }; | |
2536 | int err; | |
2537 | do { | |
2538 | err = nfs4_handle_exception(server, | |
2539 | _nfs4_server_capabilities(server, fhandle), | |
2540 | &exception); | |
2541 | } while (exception.retry); | |
2542 | return err; | |
2543 | } | |
2544 | ||
2545 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2546 | struct nfs_fsinfo *info) | |
2547 | { | |
1da177e4 LT |
2548 | struct nfs4_lookup_root_arg args = { |
2549 | .bitmask = nfs4_fattr_bitmap, | |
2550 | }; | |
2551 | struct nfs4_lookup_res res = { | |
2552 | .server = server, | |
0e574af1 | 2553 | .fattr = info->fattr, |
1da177e4 LT |
2554 | .fh = fhandle, |
2555 | }; | |
2556 | struct rpc_message msg = { | |
2557 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2558 | .rpc_argp = &args, | |
2559 | .rpc_resp = &res, | |
2560 | }; | |
008f55d0 | 2561 | |
0e574af1 | 2562 | nfs_fattr_init(info->fattr); |
7c513058 | 2563 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2564 | } |
2565 | ||
2566 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2567 | struct nfs_fsinfo *info) | |
2568 | { | |
2569 | struct nfs4_exception exception = { }; | |
2570 | int err; | |
2571 | do { | |
fb8a5ba8 BS |
2572 | err = _nfs4_lookup_root(server, fhandle, info); |
2573 | switch (err) { | |
2574 | case 0: | |
2575 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2576 | goto out; |
fb8a5ba8 BS |
2577 | default: |
2578 | err = nfs4_handle_exception(server, err, &exception); | |
2579 | } | |
1da177e4 | 2580 | } while (exception.retry); |
05e9cfb4 | 2581 | out: |
1da177e4 LT |
2582 | return err; |
2583 | } | |
2584 | ||
8f70e95f BS |
2585 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2586 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2587 | { | |
2588 | struct rpc_auth *auth; | |
2589 | int ret; | |
2590 | ||
2591 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2592 | if (IS_ERR(auth)) { |
75bc8821 | 2593 | ret = -EACCES; |
8f70e95f BS |
2594 | goto out; |
2595 | } | |
2596 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2597 | out: |
2598 | return ret; | |
2599 | } | |
2600 | ||
9a744ba3 CL |
2601 | /* |
2602 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2603 | * | |
2604 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2605 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2606 | * | |
2607 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2608 | * negative errno value. | |
2609 | */ | |
801a16dc | 2610 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2611 | struct nfs_fsinfo *info) |
1da177e4 | 2612 | { |
9a744ba3 CL |
2613 | /* Per 3530bis 15.33.5 */ |
2614 | static const rpc_authflavor_t flav_array[] = { | |
2615 | RPC_AUTH_GSS_KRB5P, | |
2616 | RPC_AUTH_GSS_KRB5I, | |
2617 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2618 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2619 | RPC_AUTH_NULL, |
2620 | }; | |
2621 | int status = -EPERM; | |
2622 | size_t i; | |
6a1a1e34 | 2623 | |
9a744ba3 | 2624 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2625 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2626 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2627 | continue; |
2628 | break; | |
8f70e95f | 2629 | } |
9a744ba3 | 2630 | |
fb8a5ba8 BS |
2631 | /* |
2632 | * -EACCESS could mean that the user doesn't have correct permissions | |
2633 | * to access the mount. It could also mean that we tried to mount | |
2634 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2635 | * existing mount programs don't handle -EACCES very well so it should | |
2636 | * be mapped to -EPERM instead. | |
2637 | */ | |
2638 | if (status == -EACCES) | |
2639 | status = -EPERM; | |
801a16dc BS |
2640 | return status; |
2641 | } | |
2642 | ||
2ed4b95b CL |
2643 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2644 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2645 | { | |
2646 | int mv = server->nfs_client->cl_minorversion; | |
2647 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2648 | } | |
2649 | ||
2650 | /** | |
2651 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2652 | * @server: initialized nfs_server handle | |
2653 | * @fhandle: we fill in the pseudo-fs root file handle | |
2654 | * @info: we fill in an FSINFO struct | |
2655 | * | |
2656 | * Returns zero on success, or a negative errno. | |
801a16dc | 2657 | */ |
3028eb2b BS |
2658 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2659 | struct nfs_fsinfo *info) | |
801a16dc | 2660 | { |
2ed4b95b CL |
2661 | int status; |
2662 | ||
2663 | status = nfs4_lookup_root(server, fhandle, info); | |
2664 | if ((status == -NFS4ERR_WRONGSEC) && | |
2665 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2666 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2667 | ||
1da177e4 LT |
2668 | if (status == 0) |
2669 | status = nfs4_server_capabilities(server, fhandle); | |
2670 | if (status == 0) | |
2671 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2672 | |
c12e87f4 | 2673 | return nfs4_map_errors(status); |
1da177e4 LT |
2674 | } |
2675 | ||
bae36241 BS |
2676 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2677 | struct nfs_fsinfo *info) | |
2678 | { | |
2679 | int error; | |
2680 | struct nfs_fattr *fattr = info->fattr; | |
2681 | ||
2682 | error = nfs4_server_capabilities(server, mntfh); | |
2683 | if (error < 0) { | |
2684 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2685 | return error; | |
2686 | } | |
2687 | ||
2688 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2689 | if (error < 0) { | |
2690 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2691 | return error; | |
2692 | } | |
2693 | ||
2694 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2695 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2696 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2697 | ||
2698 | return error; | |
2699 | } | |
2700 | ||
6b97fd3d MN |
2701 | /* |
2702 | * Get locations and (maybe) other attributes of a referral. | |
2703 | * Note that we'll actually follow the referral later when | |
2704 | * we detect fsid mismatch in inode revalidation | |
2705 | */ | |
f05d147f BS |
2706 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2707 | const struct qstr *name, struct nfs_fattr *fattr, | |
2708 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2709 | { |
2710 | int status = -ENOMEM; | |
2711 | struct page *page = NULL; | |
2712 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2713 | |
2714 | page = alloc_page(GFP_KERNEL); | |
2715 | if (page == NULL) | |
2716 | goto out; | |
2717 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2718 | if (locations == NULL) | |
2719 | goto out; | |
2720 | ||
f05d147f | 2721 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2722 | if (status != 0) |
2723 | goto out; | |
2724 | /* Make sure server returned a different fsid for the referral */ | |
2725 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2726 | dprintk("%s: server did not return a different fsid for" |
2727 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2728 | status = -EIO; |
2729 | goto out; | |
2730 | } | |
533eb461 AA |
2731 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2732 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2733 | |
533eb461 | 2734 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2735 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2736 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2737 | out: | |
2738 | if (page) | |
2739 | __free_page(page); | |
5d7ca35a | 2740 | kfree(locations); |
6b97fd3d MN |
2741 | return status; |
2742 | } | |
2743 | ||
1da177e4 LT |
2744 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2745 | { | |
2746 | struct nfs4_getattr_arg args = { | |
2747 | .fh = fhandle, | |
2748 | .bitmask = server->attr_bitmask, | |
2749 | }; | |
2750 | struct nfs4_getattr_res res = { | |
2751 | .fattr = fattr, | |
2752 | .server = server, | |
2753 | }; | |
2754 | struct rpc_message msg = { | |
2755 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2756 | .rpc_argp = &args, | |
2757 | .rpc_resp = &res, | |
2758 | }; | |
2759 | ||
0e574af1 | 2760 | nfs_fattr_init(fattr); |
7c513058 | 2761 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2762 | } |
2763 | ||
2764 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2765 | { | |
2766 | struct nfs4_exception exception = { }; | |
2767 | int err; | |
2768 | do { | |
2769 | err = nfs4_handle_exception(server, | |
2770 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2771 | &exception); | |
2772 | } while (exception.retry); | |
2773 | return err; | |
2774 | } | |
2775 | ||
2776 | /* | |
2777 | * The file is not closed if it is opened due to the a request to change | |
2778 | * the size of the file. The open call will not be needed once the | |
2779 | * VFS layer lookup-intents are implemented. | |
2780 | * | |
2781 | * Close is called when the inode is destroyed. | |
2782 | * If we haven't opened the file for O_WRONLY, we | |
2783 | * need to in the size_change case to obtain a stateid. | |
2784 | * | |
2785 | * Got race? | |
2786 | * Because OPEN is always done by name in nfsv4, it is | |
2787 | * possible that we opened a different file by the same | |
2788 | * name. We can recognize this race condition, but we | |
2789 | * can't do anything about it besides returning an error. | |
2790 | * | |
2791 | * This will be fixed with VFS changes (lookup-intent). | |
2792 | */ | |
2793 | static int | |
2794 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2795 | struct iattr *sattr) | |
2796 | { | |
08e9eac4 | 2797 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2798 | struct rpc_cred *cred = NULL; |
d530838b | 2799 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2800 | int status; |
2801 | ||
8a1636c4 | 2802 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2803 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2804 | |
0e574af1 | 2805 | nfs_fattr_init(fattr); |
1da177e4 | 2806 | |
2669940d AA |
2807 | /* Deal with open(O_TRUNC) */ |
2808 | if (sattr->ia_valid & ATTR_OPEN) | |
2809 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2810 | ||
2811 | /* Optimization: if the end result is no change, don't RPC */ | |
2812 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2813 | return 0; | |
2814 | ||
d530838b | 2815 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2816 | if (sattr->ia_valid & ATTR_FILE) { |
2817 | struct nfs_open_context *ctx; | |
2818 | ||
2819 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2820 | if (ctx) { |
2821 | cred = ctx->cred; | |
2822 | state = ctx->state; | |
2823 | } | |
659bfcd6 | 2824 | } |
08e9eac4 | 2825 | |
659bfcd6 | 2826 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2827 | if (status == 0) |
2828 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2829 | return status; |
2830 | } | |
2831 | ||
0c2e53f1 TM |
2832 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2833 | const struct qstr *name, struct nfs_fh *fhandle, | |
2834 | struct nfs_fattr *fattr) | |
2b3de441 | 2835 | { |
0c2e53f1 | 2836 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2837 | int status; |
2838 | struct nfs4_lookup_arg args = { | |
2839 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2840 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2841 | .name = name, |
2842 | }; | |
2843 | struct nfs4_lookup_res res = { | |
2844 | .server = server, | |
2845 | .fattr = fattr, | |
2846 | .fh = fhandle, | |
2847 | }; | |
2848 | struct rpc_message msg = { | |
2849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2850 | .rpc_argp = &args, | |
2851 | .rpc_resp = &res, | |
2852 | }; | |
2853 | ||
2854 | nfs_fattr_init(fattr); | |
2855 | ||
1da177e4 | 2856 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2857 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2858 | dprintk("NFS reply lookup: %d\n", status); |
2859 | return status; | |
2860 | } | |
2861 | ||
72de53ec | 2862 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2863 | { |
7ebb9315 | 2864 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2865 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2866 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2867 | fattr->nlink = 2; | |
2868 | } | |
2869 | ||
72de53ec BS |
2870 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2871 | struct qstr *name, struct nfs_fh *fhandle, | |
2872 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2873 | { |
2874 | struct nfs4_exception exception = { }; | |
72de53ec | 2875 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2876 | int err; |
2877 | do { | |
72de53ec BS |
2878 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2879 | switch (err) { | |
08ef7bd3 | 2880 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2881 | err = -ENOENT; |
2882 | goto out; | |
0c2e53f1 | 2883 | case -NFS4ERR_MOVED: |
f05d147f | 2884 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2885 | goto out; |
0c2e53f1 | 2886 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2887 | err = -EPERM; |
2888 | if (client != *clnt) | |
2889 | goto out; | |
2890 | ||
2891 | client = nfs4_create_sec_client(client, dir, name); | |
2892 | if (IS_ERR(client)) | |
2893 | return PTR_ERR(client); | |
2894 | ||
2895 | exception.retry = 1; | |
2896 | break; | |
2897 | default: | |
2898 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2899 | } |
1da177e4 | 2900 | } while (exception.retry); |
72de53ec BS |
2901 | |
2902 | out: | |
2903 | if (err == 0) | |
2904 | *clnt = client; | |
2905 | else if (client != *clnt) | |
2906 | rpc_shutdown_client(client); | |
2907 | ||
1da177e4 LT |
2908 | return err; |
2909 | } | |
2910 | ||
80a16b21 | 2911 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2912 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2913 | { | |
2914 | int status; | |
2915 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2916 | ||
2917 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2918 | if (client != NFS_CLIENT(dir)) { | |
2919 | rpc_shutdown_client(client); | |
2920 | nfs_fixup_secinfo_attributes(fattr); | |
2921 | } | |
2922 | return status; | |
2923 | } | |
2924 | ||
f05d147f BS |
2925 | struct rpc_clnt * |
2926 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2927 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2928 | { | |
2929 | int status; | |
2930 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2931 | ||
2932 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2933 | if (status < 0) { | |
2934 | rpc_shutdown_client(client); | |
2935 | return ERR_PTR(status); | |
2936 | } | |
2937 | return client; | |
2938 | } | |
2939 | ||
1da177e4 LT |
2940 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2941 | { | |
76b32999 | 2942 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2943 | struct nfs4_accessargs args = { |
2944 | .fh = NFS_FH(inode), | |
a4980e78 | 2945 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2946 | }; |
2947 | struct nfs4_accessres res = { | |
2948 | .server = server, | |
1da177e4 | 2949 | }; |
1da177e4 LT |
2950 | struct rpc_message msg = { |
2951 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2952 | .rpc_argp = &args, | |
2953 | .rpc_resp = &res, | |
2954 | .rpc_cred = entry->cred, | |
2955 | }; | |
2956 | int mode = entry->mask; | |
2957 | int status; | |
2958 | ||
2959 | /* | |
2960 | * Determine which access bits we want to ask for... | |
2961 | */ | |
2962 | if (mode & MAY_READ) | |
2963 | args.access |= NFS4_ACCESS_READ; | |
2964 | if (S_ISDIR(inode->i_mode)) { | |
2965 | if (mode & MAY_WRITE) | |
2966 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2967 | if (mode & MAY_EXEC) | |
2968 | args.access |= NFS4_ACCESS_LOOKUP; | |
2969 | } else { | |
2970 | if (mode & MAY_WRITE) | |
2971 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2972 | if (mode & MAY_EXEC) | |
2973 | args.access |= NFS4_ACCESS_EXECUTE; | |
2974 | } | |
c407d41a TM |
2975 | |
2976 | res.fattr = nfs_alloc_fattr(); | |
2977 | if (res.fattr == NULL) | |
2978 | return -ENOMEM; | |
2979 | ||
7c513058 | 2980 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2981 | if (!status) { |
6168f62c | 2982 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2983 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2984 | } |
c407d41a | 2985 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2986 | return status; |
2987 | } | |
2988 | ||
2989 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2990 | { | |
2991 | struct nfs4_exception exception = { }; | |
2992 | int err; | |
2993 | do { | |
2994 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2995 | _nfs4_proc_access(inode, entry), | |
2996 | &exception); | |
2997 | } while (exception.retry); | |
2998 | return err; | |
2999 | } | |
3000 | ||
3001 | /* | |
3002 | * TODO: For the time being, we don't try to get any attributes | |
3003 | * along with any of the zero-copy operations READ, READDIR, | |
3004 | * READLINK, WRITE. | |
3005 | * | |
3006 | * In the case of the first three, we want to put the GETATTR | |
3007 | * after the read-type operation -- this is because it is hard | |
3008 | * to predict the length of a GETATTR response in v4, and thus | |
3009 | * align the READ data correctly. This means that the GETATTR | |
3010 | * may end up partially falling into the page cache, and we should | |
3011 | * shift it into the 'tail' of the xdr_buf before processing. | |
3012 | * To do this efficiently, we need to know the total length | |
3013 | * of data received, which doesn't seem to be available outside | |
3014 | * of the RPC layer. | |
3015 | * | |
3016 | * In the case of WRITE, we also want to put the GETATTR after | |
3017 | * the operation -- in this case because we want to make sure | |
140150db | 3018 | * we get the post-operation mtime and size. |
1da177e4 LT |
3019 | * |
3020 | * Both of these changes to the XDR layer would in fact be quite | |
3021 | * minor, but I decided to leave them for a subsequent patch. | |
3022 | */ | |
3023 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3024 | unsigned int pgbase, unsigned int pglen) | |
3025 | { | |
3026 | struct nfs4_readlink args = { | |
3027 | .fh = NFS_FH(inode), | |
3028 | .pgbase = pgbase, | |
3029 | .pglen = pglen, | |
3030 | .pages = &page, | |
3031 | }; | |
f50c7000 | 3032 | struct nfs4_readlink_res res; |
1da177e4 LT |
3033 | struct rpc_message msg = { |
3034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3035 | .rpc_argp = &args, | |
f50c7000 | 3036 | .rpc_resp = &res, |
1da177e4 LT |
3037 | }; |
3038 | ||
7c513058 | 3039 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3040 | } |
3041 | ||
3042 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3043 | unsigned int pgbase, unsigned int pglen) | |
3044 | { | |
3045 | struct nfs4_exception exception = { }; | |
3046 | int err; | |
3047 | do { | |
3048 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3049 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
3050 | &exception); | |
3051 | } while (exception.retry); | |
3052 | return err; | |
3053 | } | |
3054 | ||
1da177e4 | 3055 | /* |
8867fe58 | 3056 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3057 | */ |
1da177e4 LT |
3058 | static int |
3059 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3060 | int flags) |
1da177e4 | 3061 | { |
8867fe58 | 3062 | struct nfs_open_context *ctx; |
1da177e4 | 3063 | struct nfs4_state *state; |
1da177e4 LT |
3064 | int status = 0; |
3065 | ||
8867fe58 MS |
3066 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3067 | if (IS_ERR(ctx)) | |
3068 | return PTR_ERR(ctx); | |
3069 | ||
a8a5da99 | 3070 | sattr->ia_mode &= ~current_umask(); |
4197a055 | 3071 | state = nfs4_do_open(dir, ctx, flags, sattr); |
1da177e4 LT |
3072 | if (IS_ERR(state)) { |
3073 | status = PTR_ERR(state); | |
c0204fd2 | 3074 | goto out; |
1da177e4 | 3075 | } |
1da177e4 | 3076 | out: |
8867fe58 | 3077 | put_nfs_open_context(ctx); |
1da177e4 LT |
3078 | return status; |
3079 | } | |
3080 | ||
3081 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3082 | { | |
16e42959 | 3083 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3084 | struct nfs_removeargs args = { |
1da177e4 | 3085 | .fh = NFS_FH(dir), |
26fe5750 | 3086 | .name = *name, |
16e42959 | 3087 | }; |
4fdc17b2 | 3088 | struct nfs_removeres res = { |
16e42959 | 3089 | .server = server, |
1da177e4 | 3090 | }; |
1da177e4 | 3091 | struct rpc_message msg = { |
4fdc17b2 TM |
3092 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3093 | .rpc_argp = &args, | |
3094 | .rpc_resp = &res, | |
1da177e4 | 3095 | }; |
778d2817 | 3096 | int status; |
1da177e4 | 3097 | |
7c513058 | 3098 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3099 | if (status == 0) |
16e42959 | 3100 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3101 | return status; |
3102 | } | |
3103 | ||
3104 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3105 | { | |
3106 | struct nfs4_exception exception = { }; | |
3107 | int err; | |
3108 | do { | |
3109 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3110 | _nfs4_proc_remove(dir, name), | |
3111 | &exception); | |
3112 | } while (exception.retry); | |
3113 | return err; | |
3114 | } | |
3115 | ||
e4eff1a6 | 3116 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3117 | { |
e4eff1a6 TM |
3118 | struct nfs_server *server = NFS_SERVER(dir); |
3119 | struct nfs_removeargs *args = msg->rpc_argp; | |
3120 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3121 | |
e4eff1a6 | 3122 | res->server = server; |
1da177e4 | 3123 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3124 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3125 | } |
3126 | ||
34e137cc BS |
3127 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3128 | { | |
d9afbd1b TM |
3129 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3130 | &data->args.seq_args, | |
3131 | &data->res.seq_res, | |
3132 | task); | |
1da177e4 LT |
3133 | } |
3134 | ||
e4eff1a6 | 3135 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3136 | { |
e4eff1a6 TM |
3137 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3138 | ||
14516c3a TM |
3139 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3140 | return 0; | |
9e33bed5 | 3141 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3142 | return 0; |
3143 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3144 | return 1; |
1da177e4 LT |
3145 | } |
3146 | ||
d3d4152a JL |
3147 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3148 | { | |
3149 | struct nfs_server *server = NFS_SERVER(dir); | |
3150 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3151 | struct nfs_renameres *res = msg->rpc_resp; | |
3152 | ||
3153 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3154 | res->server = server; |
9d12b216 | 3155 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3156 | } |
3157 | ||
c6bfa1a1 BS |
3158 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3159 | { | |
d9afbd1b TM |
3160 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3161 | &data->args.seq_args, | |
3162 | &data->res.seq_res, | |
3163 | task); | |
d3d4152a JL |
3164 | } |
3165 | ||
3166 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3167 | struct inode *new_dir) | |
3168 | { | |
3169 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3170 | ||
3171 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3172 | return 0; | |
3173 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3174 | return 0; | |
3175 | ||
3176 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3177 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3178 | return 1; |
3179 | } | |
3180 | ||
1da177e4 LT |
3181 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3182 | struct inode *new_dir, struct qstr *new_name) | |
3183 | { | |
6caf2c82 | 3184 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3185 | struct nfs_renameargs arg = { |
1da177e4 LT |
3186 | .old_dir = NFS_FH(old_dir), |
3187 | .new_dir = NFS_FH(new_dir), | |
3188 | .old_name = old_name, | |
3189 | .new_name = new_name, | |
6caf2c82 | 3190 | }; |
e8582a8b | 3191 | struct nfs_renameres res = { |
6caf2c82 | 3192 | .server = server, |
1da177e4 | 3193 | }; |
1da177e4 LT |
3194 | struct rpc_message msg = { |
3195 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3196 | .rpc_argp = &arg, | |
3197 | .rpc_resp = &res, | |
3198 | }; | |
011fff72 | 3199 | int status = -ENOMEM; |
1da177e4 | 3200 | |
7c513058 | 3201 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3202 | if (!status) { |
3203 | update_changeattr(old_dir, &res.old_cinfo); | |
3204 | update_changeattr(new_dir, &res.new_cinfo); | |
3205 | } | |
3206 | return status; | |
3207 | } | |
3208 | ||
3209 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3210 | struct inode *new_dir, struct qstr *new_name) | |
3211 | { | |
3212 | struct nfs4_exception exception = { }; | |
3213 | int err; | |
3214 | do { | |
3215 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3216 | _nfs4_proc_rename(old_dir, old_name, | |
3217 | new_dir, new_name), | |
3218 | &exception); | |
3219 | } while (exception.retry); | |
3220 | return err; | |
3221 | } | |
3222 | ||
3223 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3224 | { | |
91ba2eee | 3225 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3226 | struct nfs4_link_arg arg = { |
3227 | .fh = NFS_FH(inode), | |
3228 | .dir_fh = NFS_FH(dir), | |
3229 | .name = name, | |
91ba2eee TM |
3230 | .bitmask = server->attr_bitmask, |
3231 | }; | |
91ba2eee TM |
3232 | struct nfs4_link_res res = { |
3233 | .server = server, | |
1da177e4 | 3234 | }; |
1da177e4 LT |
3235 | struct rpc_message msg = { |
3236 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3237 | .rpc_argp = &arg, | |
91ba2eee | 3238 | .rpc_resp = &res, |
1da177e4 | 3239 | }; |
136f2627 TM |
3240 | int status = -ENOMEM; |
3241 | ||
3242 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3243 | if (res.fattr == NULL) |
136f2627 | 3244 | goto out; |
1da177e4 | 3245 | |
7c513058 | 3246 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3247 | if (!status) { |
3248 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3249 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3250 | } |
136f2627 | 3251 | out: |
136f2627 | 3252 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3253 | return status; |
3254 | } | |
3255 | ||
3256 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3257 | { | |
3258 | struct nfs4_exception exception = { }; | |
3259 | int err; | |
3260 | do { | |
3261 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3262 | _nfs4_proc_link(inode, dir, name), | |
3263 | &exception); | |
3264 | } while (exception.retry); | |
3265 | return err; | |
3266 | } | |
3267 | ||
57dc9a57 TM |
3268 | struct nfs4_createdata { |
3269 | struct rpc_message msg; | |
3270 | struct nfs4_create_arg arg; | |
3271 | struct nfs4_create_res res; | |
3272 | struct nfs_fh fh; | |
3273 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3274 | }; |
3275 | ||
3276 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3277 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3278 | { | |
3279 | struct nfs4_createdata *data; | |
3280 | ||
3281 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3282 | if (data != NULL) { | |
3283 | struct nfs_server *server = NFS_SERVER(dir); | |
3284 | ||
3285 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3286 | data->msg.rpc_argp = &data->arg; | |
3287 | data->msg.rpc_resp = &data->res; | |
3288 | data->arg.dir_fh = NFS_FH(dir); | |
3289 | data->arg.server = server; | |
3290 | data->arg.name = name; | |
3291 | data->arg.attrs = sattr; | |
3292 | data->arg.ftype = ftype; | |
3293 | data->arg.bitmask = server->attr_bitmask; | |
3294 | data->res.server = server; | |
3295 | data->res.fh = &data->fh; | |
3296 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3297 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3298 | } |
3299 | return data; | |
3300 | } | |
3301 | ||
3302 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3303 | { | |
7c513058 | 3304 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3305 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3306 | if (status == 0) { |
3307 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3308 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3309 | } | |
3310 | return status; | |
3311 | } | |
3312 | ||
3313 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3314 | { | |
3315 | kfree(data); | |
3316 | } | |
3317 | ||
4f390c15 | 3318 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3319 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3320 | { |
57dc9a57 TM |
3321 | struct nfs4_createdata *data; |
3322 | int status = -ENAMETOOLONG; | |
1da177e4 | 3323 | |
94a6d753 | 3324 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3325 | goto out; |
4f390c15 | 3326 | |
57dc9a57 TM |
3327 | status = -ENOMEM; |
3328 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3329 | if (data == NULL) | |
3330 | goto out; | |
3331 | ||
3332 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3333 | data->arg.u.symlink.pages = &page; | |
3334 | data->arg.u.symlink.len = len; | |
1da177e4 | 3335 | |
57dc9a57 TM |
3336 | status = nfs4_do_create(dir, dentry, data); |
3337 | ||
3338 | nfs4_free_createdata(data); | |
3339 | out: | |
1da177e4 LT |
3340 | return status; |
3341 | } | |
3342 | ||
4f390c15 | 3343 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3344 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3345 | { |
3346 | struct nfs4_exception exception = { }; | |
3347 | int err; | |
3348 | do { | |
3349 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3350 | _nfs4_proc_symlink(dir, dentry, page, |
3351 | len, sattr), | |
1da177e4 LT |
3352 | &exception); |
3353 | } while (exception.retry); | |
3354 | return err; | |
3355 | } | |
3356 | ||
3357 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3358 | struct iattr *sattr) | |
3359 | { | |
57dc9a57 TM |
3360 | struct nfs4_createdata *data; |
3361 | int status = -ENOMEM; | |
1da177e4 | 3362 | |
57dc9a57 TM |
3363 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3364 | if (data == NULL) | |
3365 | goto out; | |
3366 | ||
3367 | status = nfs4_do_create(dir, dentry, data); | |
3368 | ||
3369 | nfs4_free_createdata(data); | |
3370 | out: | |
1da177e4 LT |
3371 | return status; |
3372 | } | |
3373 | ||
3374 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3375 | struct iattr *sattr) | |
3376 | { | |
3377 | struct nfs4_exception exception = { }; | |
3378 | int err; | |
a8a5da99 AK |
3379 | |
3380 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3381 | do { |
3382 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3383 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3384 | &exception); | |
3385 | } while (exception.retry); | |
3386 | return err; | |
3387 | } | |
3388 | ||
3389 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3390 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3391 | { |
3392 | struct inode *dir = dentry->d_inode; | |
3393 | struct nfs4_readdir_arg args = { | |
3394 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3395 | .pages = pages, |
1da177e4 LT |
3396 | .pgbase = 0, |
3397 | .count = count, | |
96d25e53 | 3398 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3399 | .plus = plus, |
1da177e4 LT |
3400 | }; |
3401 | struct nfs4_readdir_res res; | |
3402 | struct rpc_message msg = { | |
3403 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3404 | .rpc_argp = &args, | |
3405 | .rpc_resp = &res, | |
3406 | .rpc_cred = cred, | |
3407 | }; | |
3408 | int status; | |
3409 | ||
3110ff80 | 3410 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3411 | dentry->d_parent->d_name.name, |
3412 | dentry->d_name.name, | |
3413 | (unsigned long long)cookie); | |
c3f52af3 | 3414 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3415 | res.pgbase = args.pgbase; |
7c513058 | 3416 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3417 | if (status >= 0) { |
c3f52af3 | 3418 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3419 | status += args.pgbase; |
3420 | } | |
c4812998 TM |
3421 | |
3422 | nfs_invalidate_atime(dir); | |
3423 | ||
3110ff80 | 3424 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3425 | return status; |
3426 | } | |
3427 | ||
3428 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3429 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3430 | { |
3431 | struct nfs4_exception exception = { }; | |
3432 | int err; | |
3433 | do { | |
3434 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3435 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3436 | pages, count, plus), |
1da177e4 LT |
3437 | &exception); |
3438 | } while (exception.retry); | |
3439 | return err; | |
3440 | } | |
3441 | ||
3442 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3443 | struct iattr *sattr, dev_t rdev) | |
3444 | { | |
57dc9a57 TM |
3445 | struct nfs4_createdata *data; |
3446 | int mode = sattr->ia_mode; | |
3447 | int status = -ENOMEM; | |
1da177e4 | 3448 | |
57dc9a57 TM |
3449 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3450 | if (data == NULL) | |
3451 | goto out; | |
3452 | ||
1da177e4 | 3453 | if (S_ISFIFO(mode)) |
57dc9a57 | 3454 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3455 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3456 | data->arg.ftype = NF4BLK; |
3457 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3458 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3459 | } |
3460 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3461 | data->arg.ftype = NF4CHR; |
3462 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3463 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3464 | } else if (!S_ISSOCK(mode)) { |
3465 | status = -EINVAL; | |
3466 | goto out_free; | |
1da177e4 | 3467 | } |
1da177e4 | 3468 | |
57dc9a57 | 3469 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3470 | out_free: |
57dc9a57 TM |
3471 | nfs4_free_createdata(data); |
3472 | out: | |
1da177e4 LT |
3473 | return status; |
3474 | } | |
3475 | ||
3476 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3477 | struct iattr *sattr, dev_t rdev) | |
3478 | { | |
3479 | struct nfs4_exception exception = { }; | |
3480 | int err; | |
a8a5da99 AK |
3481 | |
3482 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3483 | do { |
3484 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3485 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3486 | &exception); | |
3487 | } while (exception.retry); | |
3488 | return err; | |
3489 | } | |
3490 | ||
3491 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3492 | struct nfs_fsstat *fsstat) | |
3493 | { | |
3494 | struct nfs4_statfs_arg args = { | |
3495 | .fh = fhandle, | |
3496 | .bitmask = server->attr_bitmask, | |
3497 | }; | |
24ad148a BH |
3498 | struct nfs4_statfs_res res = { |
3499 | .fsstat = fsstat, | |
3500 | }; | |
1da177e4 LT |
3501 | struct rpc_message msg = { |
3502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3503 | .rpc_argp = &args, | |
24ad148a | 3504 | .rpc_resp = &res, |
1da177e4 LT |
3505 | }; |
3506 | ||
0e574af1 | 3507 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3508 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3509 | } |
3510 | ||
3511 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3512 | { | |
3513 | struct nfs4_exception exception = { }; | |
3514 | int err; | |
3515 | do { | |
3516 | err = nfs4_handle_exception(server, | |
3517 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3518 | &exception); | |
3519 | } while (exception.retry); | |
3520 | return err; | |
3521 | } | |
3522 | ||
3523 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3524 | struct nfs_fsinfo *fsinfo) | |
3525 | { | |
3526 | struct nfs4_fsinfo_arg args = { | |
3527 | .fh = fhandle, | |
3528 | .bitmask = server->attr_bitmask, | |
3529 | }; | |
3dda5e43 BH |
3530 | struct nfs4_fsinfo_res res = { |
3531 | .fsinfo = fsinfo, | |
3532 | }; | |
1da177e4 LT |
3533 | struct rpc_message msg = { |
3534 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3535 | .rpc_argp = &args, | |
3dda5e43 | 3536 | .rpc_resp = &res, |
1da177e4 LT |
3537 | }; |
3538 | ||
7c513058 | 3539 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3540 | } |
3541 | ||
3542 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3543 | { | |
3544 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3545 | unsigned long now = jiffies; |
1da177e4 LT |
3546 | int err; |
3547 | ||
3548 | do { | |
83ca7f5a CL |
3549 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
3550 | if (err == 0) { | |
3551 | struct nfs_client *clp = server->nfs_client; | |
3552 | ||
3553 | spin_lock(&clp->cl_lock); | |
3554 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3555 | clp->cl_last_renewal = now; | |
3556 | spin_unlock(&clp->cl_lock); | |
3557 | break; | |
3558 | } | |
3559 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3560 | } while (exception.retry); |
3561 | return err; | |
3562 | } | |
3563 | ||
3564 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3565 | { | |
e38eb650 BS |
3566 | int error; |
3567 | ||
0e574af1 | 3568 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3569 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3570 | if (error == 0) { |
3571 | /* block layout checks this! */ | |
3572 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3573 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3574 | } |
e38eb650 BS |
3575 | |
3576 | return error; | |
1da177e4 LT |
3577 | } |
3578 | ||
3579 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3580 | struct nfs_pathconf *pathconf) | |
3581 | { | |
3582 | struct nfs4_pathconf_arg args = { | |
3583 | .fh = fhandle, | |
3584 | .bitmask = server->attr_bitmask, | |
3585 | }; | |
d45b2989 BH |
3586 | struct nfs4_pathconf_res res = { |
3587 | .pathconf = pathconf, | |
3588 | }; | |
1da177e4 LT |
3589 | struct rpc_message msg = { |
3590 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3591 | .rpc_argp = &args, | |
d45b2989 | 3592 | .rpc_resp = &res, |
1da177e4 LT |
3593 | }; |
3594 | ||
3595 | /* None of the pathconf attributes are mandatory to implement */ | |
3596 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3597 | memset(pathconf, 0, sizeof(*pathconf)); | |
3598 | return 0; | |
3599 | } | |
3600 | ||
0e574af1 | 3601 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3602 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3603 | } |
3604 | ||
3605 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3606 | struct nfs_pathconf *pathconf) | |
3607 | { | |
3608 | struct nfs4_exception exception = { }; | |
3609 | int err; | |
3610 | ||
3611 | do { | |
3612 | err = nfs4_handle_exception(server, | |
3613 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3614 | &exception); | |
3615 | } while (exception.retry); | |
3616 | return err; | |
3617 | } | |
3618 | ||
5521abfd | 3619 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3620 | const struct nfs_open_context *ctx, |
3621 | const struct nfs_lock_context *l_ctx, | |
3622 | fmode_t fmode) | |
3623 | { | |
3624 | const struct nfs_lockowner *lockowner = NULL; | |
3625 | ||
3626 | if (l_ctx != NULL) | |
3627 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3628 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3629 | } |
3630 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3631 | ||
5521abfd TM |
3632 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3633 | const struct nfs_open_context *ctx, | |
3634 | const struct nfs_lock_context *l_ctx, | |
3635 | fmode_t fmode) | |
3636 | { | |
3637 | nfs4_stateid current_stateid; | |
3638 | ||
3639 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3640 | return false; | |
3641 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3642 | } | |
3643 | ||
3644 | static bool nfs4_error_stateid_expired(int err) | |
3645 | { | |
3646 | switch (err) { | |
3647 | case -NFS4ERR_DELEG_REVOKED: | |
3648 | case -NFS4ERR_ADMIN_REVOKED: | |
3649 | case -NFS4ERR_BAD_STATEID: | |
3650 | case -NFS4ERR_STALE_STATEID: | |
3651 | case -NFS4ERR_OLD_STATEID: | |
3652 | case -NFS4ERR_OPENMODE: | |
3653 | case -NFS4ERR_EXPIRED: | |
3654 | return true; | |
3655 | } | |
3656 | return false; | |
3657 | } | |
3658 | ||
d20581aa BH |
3659 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3660 | { | |
cd841605 | 3661 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3662 | } |
3663 | ||
cbdabc7f | 3664 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3665 | { |
cd841605 | 3666 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3667 | |
9e33bed5 | 3668 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3669 | rpc_restart_call_prepare(task); |
ec06c096 | 3670 | return -EAGAIN; |
1da177e4 | 3671 | } |
8850df99 | 3672 | |
d20581aa | 3673 | __nfs4_read_done_cb(data); |
1da177e4 | 3674 | if (task->tk_status > 0) |
ec06c096 TM |
3675 | renew_lease(server, data->timestamp); |
3676 | return 0; | |
1da177e4 LT |
3677 | } |
3678 | ||
5521abfd TM |
3679 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3680 | struct nfs_readargs *args) | |
3681 | { | |
3682 | ||
3683 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3684 | nfs4_stateid_is_current(&args->stateid, | |
3685 | args->context, | |
3686 | args->lock_context, | |
3687 | FMODE_READ)) | |
3688 | return false; | |
3689 | rpc_restart_call_prepare(task); | |
3690 | return true; | |
3691 | } | |
3692 | ||
cbdabc7f AA |
3693 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3694 | { | |
3695 | ||
3696 | dprintk("--> %s\n", __func__); | |
3697 | ||
3698 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3699 | return -EAGAIN; | |
5521abfd TM |
3700 | if (nfs4_read_stateid_changed(task, &data->args)) |
3701 | return -EAGAIN; | |
d20581aa BH |
3702 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3703 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3704 | } |
3705 | ||
bdc7f021 | 3706 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3707 | { |
1da177e4 | 3708 | data->timestamp = jiffies; |
cbdabc7f | 3709 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3710 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3711 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3712 | } |
3713 | ||
ea7c3303 BS |
3714 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3715 | { | |
9b206149 | 3716 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3717 | &data->args.seq_args, |
3718 | &data->res.seq_res, | |
9b206149 TM |
3719 | task)) |
3720 | return; | |
3721 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3722 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3723 | } |
3724 | ||
b029bc9b | 3725 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3726 | { |
cd841605 | 3727 | struct inode *inode = data->header->inode; |
1da177e4 | 3728 | |
9e33bed5 | 3729 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3730 | rpc_restart_call_prepare(task); |
788e7a89 | 3731 | return -EAGAIN; |
1da177e4 | 3732 | } |
4f9838c7 | 3733 | if (task->tk_status >= 0) { |
1da177e4 | 3734 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3735 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3736 | } |
788e7a89 | 3737 | return 0; |
1da177e4 LT |
3738 | } |
3739 | ||
5521abfd TM |
3740 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3741 | struct nfs_writeargs *args) | |
3742 | { | |
3743 | ||
3744 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3745 | nfs4_stateid_is_current(&args->stateid, | |
3746 | args->context, | |
3747 | args->lock_context, | |
3748 | FMODE_WRITE)) | |
3749 | return false; | |
3750 | rpc_restart_call_prepare(task); | |
3751 | return true; | |
3752 | } | |
3753 | ||
b029bc9b FI |
3754 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3755 | { | |
3756 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3757 | return -EAGAIN; | |
5521abfd TM |
3758 | if (nfs4_write_stateid_changed(task, &data->args)) |
3759 | return -EAGAIN; | |
d20581aa BH |
3760 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3761 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3762 | } |
3763 | ||
5a37f851 TM |
3764 | static |
3765 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3766 | { |
5a37f851 TM |
3767 | const struct nfs_pgio_header *hdr = data->header; |
3768 | ||
3769 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3770 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3771 | return false; | |
3772 | /* Otherwise, request attributes if and only if we don't hold | |
3773 | * a delegation | |
3774 | */ | |
011e2a7f | 3775 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3776 | } |
a69aef14 | 3777 | |
bdc7f021 | 3778 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3779 | { |
cd841605 | 3780 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3781 | |
5a37f851 | 3782 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3783 | data->args.bitmask = NULL; |
3784 | data->res.fattr = NULL; | |
3785 | } else | |
3786 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3787 | |
b029bc9b FI |
3788 | if (!data->write_done_cb) |
3789 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3790 | data->res.server = server; |
1da177e4 LT |
3791 | data->timestamp = jiffies; |
3792 | ||
bdc7f021 | 3793 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3794 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3795 | } |
3796 | ||
c6cb80d0 BS |
3797 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3798 | { | |
9b206149 | 3799 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3800 | &data->args.seq_args, |
3801 | &data->res.seq_res, | |
9b206149 TM |
3802 | task)) |
3803 | return; | |
3804 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3805 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
3806 | } |
3807 | ||
0b7c0153 | 3808 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3809 | { |
d9afbd1b TM |
3810 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3811 | &data->args.seq_args, | |
3812 | &data->res.seq_res, | |
3813 | task); | |
1da177e4 LT |
3814 | } |
3815 | ||
0b7c0153 | 3816 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3817 | { |
1da177e4 | 3818 | struct inode *inode = data->inode; |
14516c3a | 3819 | |
9e33bed5 | 3820 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3821 | rpc_restart_call_prepare(task); |
788e7a89 | 3822 | return -EAGAIN; |
1da177e4 | 3823 | } |
788e7a89 | 3824 | return 0; |
1da177e4 LT |
3825 | } |
3826 | ||
0b7c0153 | 3827 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3828 | { |
3829 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3830 | return -EAGAIN; | |
0b7c0153 | 3831 | return data->commit_done_cb(task, data); |
5f452431 FI |
3832 | } |
3833 | ||
0b7c0153 | 3834 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3835 | { |
788e7a89 | 3836 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3837 | |
0b7c0153 FI |
3838 | if (data->commit_done_cb == NULL) |
3839 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3840 | data->res.server = server; |
bdc7f021 | 3841 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3842 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3843 | } |
3844 | ||
9bc4e3ca CL |
3845 | struct nfs4_renewdata { |
3846 | struct nfs_client *client; | |
3847 | unsigned long timestamp; | |
3848 | }; | |
3849 | ||
1da177e4 LT |
3850 | /* |
3851 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3852 | * standalone procedure for queueing an asynchronous RENEW. | |
3853 | */ | |
9bc4e3ca | 3854 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3855 | { |
9bc4e3ca CL |
3856 | struct nfs4_renewdata *data = calldata; |
3857 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3858 | |
0851de06 AB |
3859 | if (atomic_read(&clp->cl_count) > 1) |
3860 | nfs4_schedule_state_renewal(clp); | |
3861 | nfs_put_client(clp); | |
9bc4e3ca | 3862 | kfree(data); |
dc96aef9 AB |
3863 | } |
3864 | ||
9bc4e3ca | 3865 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3866 | { |
9bc4e3ca CL |
3867 | struct nfs4_renewdata *data = calldata; |
3868 | struct nfs_client *clp = data->client; | |
3869 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3870 | |
3871 | if (task->tk_status < 0) { | |
95baa25c | 3872 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3873 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3874 | return; | |
3875 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3876 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3877 | return; |
3878 | } | |
3879 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3880 | } |
452e9352 | 3881 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3882 | } |
3883 | ||
963d8fe5 TM |
3884 | static const struct rpc_call_ops nfs4_renew_ops = { |
3885 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3886 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3887 | }; |
3888 | ||
2f60ea6b | 3889 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3890 | { |
3891 | struct rpc_message msg = { | |
3892 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3893 | .rpc_argp = clp, | |
b4454fe1 | 3894 | .rpc_cred = cred, |
1da177e4 | 3895 | }; |
9bc4e3ca | 3896 | struct nfs4_renewdata *data; |
1da177e4 | 3897 | |
2f60ea6b TM |
3898 | if (renew_flags == 0) |
3899 | return 0; | |
0851de06 AB |
3900 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3901 | return -EIO; | |
b569ad34 | 3902 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3903 | if (data == NULL) |
3904 | return -ENOMEM; | |
3905 | data->client = clp; | |
3906 | data->timestamp = jiffies; | |
bc7a05ca | 3907 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 3908 | &nfs4_renew_ops, data); |
1da177e4 LT |
3909 | } |
3910 | ||
8534d4ec | 3911 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3912 | { |
3913 | struct rpc_message msg = { | |
3914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3915 | .rpc_argp = clp, | |
b4454fe1 | 3916 | .rpc_cred = cred, |
1da177e4 LT |
3917 | }; |
3918 | unsigned long now = jiffies; | |
3919 | int status; | |
3920 | ||
bc7a05ca | 3921 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3922 | if (status < 0) |
3923 | return status; | |
452e9352 | 3924 | do_renew_lease(clp, now); |
1da177e4 LT |
3925 | return 0; |
3926 | } | |
3927 | ||
aa1870af BF |
3928 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3929 | { | |
3930 | return (server->caps & NFS_CAP_ACLS) | |
3931 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3932 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3933 | } | |
3934 | ||
21f498c2 TM |
3935 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3936 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3937 | * the stack. |
3938 | */ | |
21f498c2 | 3939 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3940 | |
e9e3d724 NH |
3941 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3942 | struct page **pages, unsigned int *pgbase) | |
3943 | { | |
3944 | struct page *newpage, **spages; | |
3945 | int rc = 0; | |
3946 | size_t len; | |
3947 | spages = pages; | |
3948 | ||
3949 | do { | |
21f498c2 | 3950 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3951 | newpage = alloc_page(GFP_KERNEL); |
3952 | ||
3953 | if (newpage == NULL) | |
3954 | goto unwind; | |
3955 | memcpy(page_address(newpage), buf, len); | |
3956 | buf += len; | |
3957 | buflen -= len; | |
3958 | *pages++ = newpage; | |
3959 | rc++; | |
3960 | } while (buflen != 0); | |
3961 | ||
3962 | return rc; | |
3963 | ||
3964 | unwind: | |
3965 | for(; rc > 0; rc--) | |
3966 | __free_page(spages[rc-1]); | |
3967 | return -ENOMEM; | |
3968 | } | |
3969 | ||
e50a1c2e BF |
3970 | struct nfs4_cached_acl { |
3971 | int cached; | |
3972 | size_t len; | |
3e9d4154 | 3973 | char data[0]; |
e50a1c2e BF |
3974 | }; |
3975 | ||
3976 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3977 | { | |
3978 | struct nfs_inode *nfsi = NFS_I(inode); | |
3979 | ||
3980 | spin_lock(&inode->i_lock); | |
3981 | kfree(nfsi->nfs4_acl); | |
3982 | nfsi->nfs4_acl = acl; | |
3983 | spin_unlock(&inode->i_lock); | |
3984 | } | |
3985 | ||
3986 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3987 | { | |
3988 | nfs4_set_cached_acl(inode, NULL); | |
3989 | } | |
3990 | ||
3991 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3992 | { | |
3993 | struct nfs_inode *nfsi = NFS_I(inode); | |
3994 | struct nfs4_cached_acl *acl; | |
3995 | int ret = -ENOENT; | |
3996 | ||
3997 | spin_lock(&inode->i_lock); | |
3998 | acl = nfsi->nfs4_acl; | |
3999 | if (acl == NULL) | |
4000 | goto out; | |
4001 | if (buf == NULL) /* user is just asking for length */ | |
4002 | goto out_len; | |
4003 | if (acl->cached == 0) | |
4004 | goto out; | |
4005 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4006 | if (acl->len > buflen) | |
4007 | goto out; | |
4008 | memcpy(buf, acl->data, acl->len); | |
4009 | out_len: | |
4010 | ret = acl->len; | |
4011 | out: | |
4012 | spin_unlock(&inode->i_lock); | |
4013 | return ret; | |
4014 | } | |
4015 | ||
5794d21e | 4016 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4017 | { |
4018 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4019 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4020 | |
1f1ea6c2 | 4021 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4022 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4023 | if (acl == NULL) |
4024 | goto out; | |
4025 | acl->cached = 1; | |
5794d21e | 4026 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4027 | } else { |
4028 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4029 | if (acl == NULL) | |
4030 | goto out; | |
4031 | acl->cached = 0; | |
4032 | } | |
4033 | acl->len = acl_len; | |
4034 | out: | |
4035 | nfs4_set_cached_acl(inode, acl); | |
4036 | } | |
4037 | ||
bf118a34 AA |
4038 | /* |
4039 | * The getxattr API returns the required buffer length when called with a | |
4040 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4041 | * the required buf. On a NULL buf, we send a page of data to the server | |
4042 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4043 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4044 | * the cache. If not so, we throw away the page, and cache the required | |
4045 | * length. The next getxattr call will then produce another round trip to | |
4046 | * the server, this time with the input buf of the required size. | |
4047 | */ | |
16b4289c | 4048 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4049 | { |
bf118a34 | 4050 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4051 | struct nfs_getaclargs args = { |
4052 | .fh = NFS_FH(inode), | |
4053 | .acl_pages = pages, | |
4054 | .acl_len = buflen, | |
4055 | }; | |
663c79b3 BH |
4056 | struct nfs_getaclres res = { |
4057 | .acl_len = buflen, | |
4058 | }; | |
aa1870af BF |
4059 | struct rpc_message msg = { |
4060 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4061 | .rpc_argp = &args, | |
663c79b3 | 4062 | .rpc_resp = &res, |
aa1870af | 4063 | }; |
21f498c2 TM |
4064 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4065 | int ret = -ENOMEM, i; | |
aa1870af | 4066 | |
bf118a34 AA |
4067 | /* As long as we're doing a round trip to the server anyway, |
4068 | * let's be prepared for a page of acl data. */ | |
4069 | if (npages == 0) | |
4070 | npages = 1; | |
21f498c2 TM |
4071 | if (npages > ARRAY_SIZE(pages)) |
4072 | return -ERANGE; | |
5a006899 | 4073 | |
bf118a34 AA |
4074 | for (i = 0; i < npages; i++) { |
4075 | pages[i] = alloc_page(GFP_KERNEL); | |
4076 | if (!pages[i]) | |
4077 | goto out_free; | |
e50a1c2e | 4078 | } |
5a006899 SP |
4079 | |
4080 | /* for decoding across pages */ | |
4081 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4082 | if (!res.acl_scratch) | |
4083 | goto out_free; | |
4084 | ||
bf118a34 AA |
4085 | args.acl_len = npages * PAGE_SIZE; |
4086 | args.acl_pgbase = 0; | |
5a006899 | 4087 | |
de040bec | 4088 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4089 | __func__, buf, buflen, npages, args.acl_len); |
4090 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4091 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4092 | if (ret) |
4093 | goto out_free; | |
bf118a34 | 4094 | |
1f1ea6c2 TM |
4095 | /* Handle the case where the passed-in buffer is too short */ |
4096 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4097 | /* Did the user only issue a request for the acl length? */ | |
4098 | if (buf == NULL) | |
4099 | goto out_ok; | |
e50a1c2e | 4100 | ret = -ERANGE; |
1f1ea6c2 | 4101 | goto out_free; |
e50a1c2e | 4102 | } |
1f1ea6c2 | 4103 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4104 | if (buf) { |
4105 | if (res.acl_len > buflen) { | |
4106 | ret = -ERANGE; | |
4107 | goto out_free; | |
4108 | } | |
1f1ea6c2 | 4109 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4110 | } |
1f1ea6c2 TM |
4111 | out_ok: |
4112 | ret = res.acl_len; | |
e50a1c2e | 4113 | out_free: |
bf118a34 AA |
4114 | for (i = 0; i < npages; i++) |
4115 | if (pages[i]) | |
4116 | __free_page(pages[i]); | |
331818f1 TM |
4117 | if (res.acl_scratch) |
4118 | __free_page(res.acl_scratch); | |
aa1870af BF |
4119 | return ret; |
4120 | } | |
4121 | ||
16b4289c TM |
4122 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4123 | { | |
4124 | struct nfs4_exception exception = { }; | |
4125 | ssize_t ret; | |
4126 | do { | |
4127 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4128 | if (ret >= 0) | |
4129 | break; | |
4130 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4131 | } while (exception.retry); | |
4132 | return ret; | |
4133 | } | |
4134 | ||
e50a1c2e BF |
4135 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4136 | { | |
4137 | struct nfs_server *server = NFS_SERVER(inode); | |
4138 | int ret; | |
4139 | ||
4140 | if (!nfs4_server_supports_acls(server)) | |
4141 | return -EOPNOTSUPP; | |
4142 | ret = nfs_revalidate_inode(server, inode); | |
4143 | if (ret < 0) | |
4144 | return ret; | |
08a22b39 AK |
4145 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4146 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4147 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4148 | if (ret != -ENOENT) | |
bf118a34 AA |
4149 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4150 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4151 | return ret; |
4152 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4153 | } | |
4154 | ||
16b4289c | 4155 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4156 | { |
4157 | struct nfs_server *server = NFS_SERVER(inode); | |
4158 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4159 | struct nfs_setaclargs arg = { | |
4160 | .fh = NFS_FH(inode), | |
4161 | .acl_pages = pages, | |
4162 | .acl_len = buflen, | |
4163 | }; | |
73c403a9 | 4164 | struct nfs_setaclres res; |
4b580ee3 BF |
4165 | struct rpc_message msg = { |
4166 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4167 | .rpc_argp = &arg, | |
73c403a9 | 4168 | .rpc_resp = &res, |
4b580ee3 | 4169 | }; |
21f498c2 | 4170 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4171 | int ret, i; |
4b580ee3 BF |
4172 | |
4173 | if (!nfs4_server_supports_acls(server)) | |
4174 | return -EOPNOTSUPP; | |
21f498c2 TM |
4175 | if (npages > ARRAY_SIZE(pages)) |
4176 | return -ERANGE; | |
e9e3d724 NH |
4177 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4178 | if (i < 0) | |
4179 | return i; | |
57ec14c5 | 4180 | nfs4_inode_return_delegation(inode); |
7c513058 | 4181 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4182 | |
4183 | /* | |
4184 | * Free each page after tx, so the only ref left is | |
4185 | * held by the network stack | |
4186 | */ | |
4187 | for (; i > 0; i--) | |
4188 | put_page(pages[i-1]); | |
4189 | ||
08a22b39 AK |
4190 | /* |
4191 | * Acl update can result in inode attribute update. | |
4192 | * so mark the attribute cache invalid. | |
4193 | */ | |
4194 | spin_lock(&inode->i_lock); | |
4195 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4196 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4197 | nfs_access_zap_cache(inode); |
4198 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4199 | return ret; |
4200 | } | |
4201 | ||
16b4289c TM |
4202 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4203 | { | |
4204 | struct nfs4_exception exception = { }; | |
4205 | int err; | |
4206 | do { | |
4207 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4208 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4209 | &exception); | |
4210 | } while (exception.retry); | |
4211 | return err; | |
4212 | } | |
4213 | ||
1da177e4 | 4214 | static int |
aa5190d0 | 4215 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4216 | { |
aa5190d0 TM |
4217 | struct nfs_client *clp = server->nfs_client; |
4218 | ||
4219 | if (task->tk_status >= 0) | |
1da177e4 LT |
4220 | return 0; |
4221 | switch(task->tk_status) { | |
a1d0b5ee | 4222 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4223 | case -NFS4ERR_ADMIN_REVOKED: |
4224 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4225 | if (state == NULL) |
4226 | break; | |
4227 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4228 | case -NFS4ERR_OPENMODE: |
4229 | if (state == NULL) | |
4230 | break; | |
5d422301 TM |
4231 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4232 | goto stateid_invalid; | |
0400a6b0 | 4233 | goto wait_on_recovery; |
0ced63d1 | 4234 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4235 | if (state != NULL) { |
4236 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4237 | goto stateid_invalid; | |
4238 | } | |
1da177e4 | 4239 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4240 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4241 | nfs4_schedule_lease_recovery(clp); |
4242 | goto wait_on_recovery; | |
4745e315 AA |
4243 | #if defined(CONFIG_NFS_V4_1) |
4244 | case -NFS4ERR_BADSESSION: | |
4245 | case -NFS4ERR_BADSLOT: | |
4246 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4247 | case -NFS4ERR_DEADSESSION: | |
4248 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4249 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4250 | case -NFS4ERR_SEQ_MISORDERED: | |
4251 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4252 | task->tk_status); | |
9f594791 | 4253 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4254 | task->tk_status = 0; |
4255 | return -EAGAIN; | |
4256 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4257 | case -NFS4ERR_DELAY: |
aa5190d0 | 4258 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4259 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4260 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4261 | task->tk_status = 0; | |
4262 | return -EAGAIN; | |
a8a4ae3a | 4263 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4264 | case -NFS4ERR_OLD_STATEID: |
4265 | task->tk_status = 0; | |
4266 | return -EAGAIN; | |
4267 | } | |
4268 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4269 | return 0; | |
5d422301 TM |
4270 | stateid_invalid: |
4271 | task->tk_status = -EIO; | |
4272 | return 0; | |
0400a6b0 | 4273 | wait_on_recovery: |
a2c0b9e2 | 4274 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4275 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4276 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4277 | task->tk_status = 0; | |
4278 | return -EAGAIN; | |
1da177e4 LT |
4279 | } |
4280 | ||
f092075d CL |
4281 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4282 | nfs4_verifier *bootverf) | |
cd93710e CL |
4283 | { |
4284 | __be32 verf[2]; | |
4285 | ||
2c820d9a CL |
4286 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4287 | /* An impossible timestamp guarantees this value | |
4288 | * will never match a generated boot time. */ | |
4289 | verf[0] = 0; | |
4290 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4291 | } else { | |
f092075d CL |
4292 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4293 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4294 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4295 | } |
cd93710e CL |
4296 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4297 | } | |
4298 | ||
e984a55a CL |
4299 | static unsigned int |
4300 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4301 | char *buf, size_t len) | |
4302 | { | |
4303 | unsigned int result; | |
4304 | ||
4305 | rcu_read_lock(); | |
4306 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4307 | clp->cl_ipaddr, | |
4308 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4309 | RPC_DISPLAY_ADDR), | |
4310 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4311 | RPC_DISPLAY_PROTO)); | |
4312 | rcu_read_unlock(); | |
4313 | return result; | |
4314 | } | |
4315 | ||
4316 | static unsigned int | |
4317 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4318 | char *buf, size_t len) | |
4319 | { | |
6f2ea7f2 CL |
4320 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4321 | ||
4322 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4323 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4324 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4325 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4326 | nodename); |
e984a55a CL |
4327 | } |
4328 | ||
6bbb4ae8 CL |
4329 | /** |
4330 | * nfs4_proc_setclientid - Negotiate client ID | |
4331 | * @clp: state data structure | |
4332 | * @program: RPC program for NFSv4 callback service | |
4333 | * @port: IP port number for NFS4 callback service | |
4334 | * @cred: RPC credential to use for this call | |
4335 | * @res: where to place the result | |
4336 | * | |
4337 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4338 | */ | |
bb8b27e5 TM |
4339 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4340 | unsigned short port, struct rpc_cred *cred, | |
4341 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4342 | { |
4343 | nfs4_verifier sc_verifier; | |
4344 | struct nfs4_setclientid setclientid = { | |
4345 | .sc_verifier = &sc_verifier, | |
4346 | .sc_prog = program, | |
f4eecd5d | 4347 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4348 | }; |
4349 | struct rpc_message msg = { | |
4350 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4351 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4352 | .rpc_resp = res, |
286d7d6a | 4353 | .rpc_cred = cred, |
1da177e4 | 4354 | }; |
6bbb4ae8 | 4355 | int status; |
1da177e4 | 4356 | |
de734831 | 4357 | /* nfs_client_id4 */ |
f092075d | 4358 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4359 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4360 | setclientid.sc_name_len = | |
4361 | nfs4_init_uniform_client_string(clp, | |
4362 | setclientid.sc_name, | |
4363 | sizeof(setclientid.sc_name)); | |
4364 | else | |
4365 | setclientid.sc_name_len = | |
4366 | nfs4_init_nonuniform_client_string(clp, | |
4367 | setclientid.sc_name, | |
4368 | sizeof(setclientid.sc_name)); | |
de734831 | 4369 | /* cb_client4 */ |
e984a55a | 4370 | rcu_read_lock(); |
de734831 | 4371 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4372 | sizeof(setclientid.sc_netid), |
4373 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4374 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4375 | rcu_read_unlock(); |
4376 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4377 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4378 | clp->cl_ipaddr, port >> 8, port & 255); |
4379 | ||
6bbb4ae8 CL |
4380 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4381 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4382 | setclientid.sc_name_len, setclientid.sc_name); | |
4383 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4384 | dprintk("NFS reply setclientid: %d\n", status); | |
4385 | return status; | |
1da177e4 LT |
4386 | } |
4387 | ||
6bbb4ae8 CL |
4388 | /** |
4389 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4390 | * @clp: state data structure | |
4391 | * @res: result of a previous SETCLIENTID | |
4392 | * @cred: RPC credential to use for this call | |
4393 | * | |
4394 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4395 | */ | |
fd954ae1 | 4396 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4397 | struct nfs4_setclientid_res *arg, |
4398 | struct rpc_cred *cred) | |
1da177e4 | 4399 | { |
1da177e4 LT |
4400 | struct rpc_message msg = { |
4401 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4402 | .rpc_argp = arg, |
286d7d6a | 4403 | .rpc_cred = cred, |
1da177e4 | 4404 | }; |
1da177e4 LT |
4405 | int status; |
4406 | ||
6bbb4ae8 CL |
4407 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4408 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4409 | clp->cl_clientid); | |
1bd714f2 | 4410 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
6bbb4ae8 | 4411 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4412 | return status; |
4413 | } | |
4414 | ||
fe650407 TM |
4415 | struct nfs4_delegreturndata { |
4416 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4417 | struct nfs4_delegreturnres res; |
fe650407 TM |
4418 | struct nfs_fh fh; |
4419 | nfs4_stateid stateid; | |
26e976a8 | 4420 | unsigned long timestamp; |
fa178f29 | 4421 | struct nfs_fattr fattr; |
fe650407 TM |
4422 | int rpc_status; |
4423 | }; | |
4424 | ||
fe650407 TM |
4425 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4426 | { | |
4427 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4428 | |
14516c3a TM |
4429 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4430 | return; | |
938e1010 | 4431 | |
79708861 RL |
4432 | switch (task->tk_status) { |
4433 | case -NFS4ERR_STALE_STATEID: | |
4434 | case -NFS4ERR_EXPIRED: | |
4435 | case 0: | |
fa178f29 | 4436 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4437 | break; |
4438 | default: | |
4439 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4440 | -EAGAIN) { | |
d00c5d43 | 4441 | rpc_restart_call_prepare(task); |
79708861 RL |
4442 | return; |
4443 | } | |
4444 | } | |
4445 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4446 | } |
4447 | ||
4448 | static void nfs4_delegreturn_release(void *calldata) | |
4449 | { | |
fe650407 TM |
4450 | kfree(calldata); |
4451 | } | |
4452 | ||
938e1010 AA |
4453 | #if defined(CONFIG_NFS_V4_1) |
4454 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4455 | { | |
4456 | struct nfs4_delegreturndata *d_data; | |
4457 | ||
4458 | d_data = (struct nfs4_delegreturndata *)data; | |
4459 | ||
d9afbd1b TM |
4460 | nfs4_setup_sequence(d_data->res.server, |
4461 | &d_data->args.seq_args, | |
4462 | &d_data->res.seq_res, | |
4463 | task); | |
938e1010 AA |
4464 | } |
4465 | #endif /* CONFIG_NFS_V4_1 */ | |
4466 | ||
c8d149f3 | 4467 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4468 | #if defined(CONFIG_NFS_V4_1) |
4469 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4470 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4471 | .rpc_call_done = nfs4_delegreturn_done, |
4472 | .rpc_release = nfs4_delegreturn_release, | |
4473 | }; | |
4474 | ||
e6f81075 | 4475 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4476 | { |
4477 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4478 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4479 | struct rpc_task *task; |
5138fde0 TM |
4480 | struct rpc_message msg = { |
4481 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4482 | .rpc_cred = cred, | |
4483 | }; | |
c970aa85 TM |
4484 | struct rpc_task_setup task_setup_data = { |
4485 | .rpc_client = server->client, | |
5138fde0 | 4486 | .rpc_message = &msg, |
c970aa85 TM |
4487 | .callback_ops = &nfs4_delegreturn_ops, |
4488 | .flags = RPC_TASK_ASYNC, | |
4489 | }; | |
e6f81075 | 4490 | int status = 0; |
fe650407 | 4491 | |
8535b2be | 4492 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4493 | if (data == NULL) |
4494 | return -ENOMEM; | |
9d12b216 | 4495 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4496 | data->args.fhandle = &data->fh; |
4497 | data->args.stateid = &data->stateid; | |
9e907fec | 4498 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4499 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4500 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4501 | data->res.fattr = &data->fattr; |
4502 | data->res.server = server; | |
5138fde0 | 4503 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4504 | data->timestamp = jiffies; |
fe650407 TM |
4505 | data->rpc_status = 0; |
4506 | ||
c970aa85 | 4507 | task_setup_data.callback_data = data; |
1174dd1f TM |
4508 | msg.rpc_argp = &data->args; |
4509 | msg.rpc_resp = &data->res; | |
c970aa85 | 4510 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4511 | if (IS_ERR(task)) |
fe650407 | 4512 | return PTR_ERR(task); |
e6f81075 TM |
4513 | if (!issync) |
4514 | goto out; | |
fe650407 | 4515 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4516 | if (status != 0) |
4517 | goto out; | |
4518 | status = data->rpc_status; | |
e144cbcc TM |
4519 | if (status == 0) |
4520 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4521 | else | |
4522 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4523 | out: |
e6b3c4db | 4524 | rpc_put_task(task); |
fe650407 | 4525 | return status; |
1da177e4 LT |
4526 | } |
4527 | ||
e6f81075 | 4528 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4529 | { |
4530 | struct nfs_server *server = NFS_SERVER(inode); | |
4531 | struct nfs4_exception exception = { }; | |
4532 | int err; | |
4533 | do { | |
e6f81075 | 4534 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4535 | switch (err) { |
4536 | case -NFS4ERR_STALE_STATEID: | |
4537 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4538 | case 0: |
4539 | return 0; | |
4540 | } | |
4541 | err = nfs4_handle_exception(server, err, &exception); | |
4542 | } while (exception.retry); | |
4543 | return err; | |
4544 | } | |
4545 | ||
4546 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4547 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4548 | ||
4549 | /* | |
4550 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4551 | */ | |
4552 | static unsigned long | |
4553 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4554 | { | |
d310310c | 4555 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4556 | timeout <<= 1; |
4557 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4558 | return NFS4_LOCK_MAXTIMEOUT; | |
4559 | return timeout; | |
4560 | } | |
4561 | ||
1da177e4 LT |
4562 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4563 | { | |
4564 | struct inode *inode = state->inode; | |
4565 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4566 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4567 | struct nfs_lockt_args arg = { |
1da177e4 | 4568 | .fh = NFS_FH(inode), |
911d1aaf | 4569 | .fl = request, |
1da177e4 | 4570 | }; |
911d1aaf TM |
4571 | struct nfs_lockt_res res = { |
4572 | .denied = request, | |
1da177e4 LT |
4573 | }; |
4574 | struct rpc_message msg = { | |
4575 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4576 | .rpc_argp = &arg, | |
4577 | .rpc_resp = &res, | |
4578 | .rpc_cred = state->owner->so_cred, | |
4579 | }; | |
1da177e4 LT |
4580 | struct nfs4_lock_state *lsp; |
4581 | int status; | |
4582 | ||
911d1aaf | 4583 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4584 | status = nfs4_set_lock_state(state, request); |
4585 | if (status != 0) | |
4586 | goto out; | |
4587 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4588 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4589 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4590 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4591 | switch (status) { |
4592 | case 0: | |
4593 | request->fl_type = F_UNLCK; | |
4594 | break; | |
4595 | case -NFS4ERR_DENIED: | |
4596 | status = 0; | |
1da177e4 | 4597 | } |
70cc6487 | 4598 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4599 | out: |
1da177e4 LT |
4600 | return status; |
4601 | } | |
4602 | ||
4603 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4604 | { | |
4605 | struct nfs4_exception exception = { }; | |
4606 | int err; | |
4607 | ||
4608 | do { | |
4609 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4610 | _nfs4_proc_getlk(state, cmd, request), | |
4611 | &exception); | |
4612 | } while (exception.retry); | |
4613 | return err; | |
4614 | } | |
4615 | ||
4616 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4617 | { | |
4618 | int res = 0; | |
4619 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4620 | case FL_POSIX: | |
4621 | res = posix_lock_file_wait(file, fl); | |
4622 | break; | |
4623 | case FL_FLOCK: | |
4624 | res = flock_lock_file_wait(file, fl); | |
4625 | break; | |
4626 | default: | |
4627 | BUG(); | |
4628 | } | |
1da177e4 LT |
4629 | return res; |
4630 | } | |
4631 | ||
faf5f49c | 4632 | struct nfs4_unlockdata { |
911d1aaf TM |
4633 | struct nfs_locku_args arg; |
4634 | struct nfs_locku_res res; | |
faf5f49c TM |
4635 | struct nfs4_lock_state *lsp; |
4636 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4637 | struct file_lock fl; |
4638 | const struct nfs_server *server; | |
26e976a8 | 4639 | unsigned long timestamp; |
faf5f49c TM |
4640 | }; |
4641 | ||
911d1aaf TM |
4642 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4643 | struct nfs_open_context *ctx, | |
4644 | struct nfs4_lock_state *lsp, | |
4645 | struct nfs_seqid *seqid) | |
4646 | { | |
4647 | struct nfs4_unlockdata *p; | |
4648 | struct inode *inode = lsp->ls_state->inode; | |
4649 | ||
8535b2be | 4650 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4651 | if (p == NULL) |
4652 | return NULL; | |
4653 | p->arg.fh = NFS_FH(inode); | |
4654 | p->arg.fl = &p->fl; | |
4655 | p->arg.seqid = seqid; | |
c1d51931 | 4656 | p->res.seqid = seqid; |
911d1aaf TM |
4657 | p->arg.stateid = &lsp->ls_stateid; |
4658 | p->lsp = lsp; | |
4659 | atomic_inc(&lsp->ls_count); | |
4660 | /* Ensure we don't close file until we're done freeing locks! */ | |
4661 | p->ctx = get_nfs_open_context(ctx); | |
4662 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4663 | p->server = NFS_SERVER(inode); | |
4664 | return p; | |
4665 | } | |
4666 | ||
06f814a3 | 4667 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4668 | { |
963d8fe5 | 4669 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4670 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4671 | nfs4_put_lock_state(calldata->lsp); |
4672 | put_nfs_open_context(calldata->ctx); | |
4673 | kfree(calldata); | |
faf5f49c TM |
4674 | } |
4675 | ||
963d8fe5 | 4676 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4677 | { |
963d8fe5 | 4678 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4679 | |
14516c3a TM |
4680 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4681 | return; | |
faf5f49c TM |
4682 | switch (task->tk_status) { |
4683 | case 0: | |
f597c537 TM |
4684 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4685 | &calldata->res.stateid); | |
26e976a8 | 4686 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4687 | break; |
9e33bed5 TM |
4688 | case -NFS4ERR_BAD_STATEID: |
4689 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4690 | case -NFS4ERR_STALE_STATEID: |
4691 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4692 | break; |
4693 | default: | |
9e33bed5 | 4694 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4695 | rpc_restart_call_prepare(task); |
faf5f49c | 4696 | } |
2b1bc308 | 4697 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4698 | } |
4699 | ||
4ce70ada | 4700 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4701 | { |
4ce70ada | 4702 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4703 | |
911d1aaf | 4704 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4705 | goto out_wait; |
795a88c9 | 4706 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4707 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4708 | goto out_no_action; |
faf5f49c | 4709 | } |
26e976a8 | 4710 | calldata->timestamp = jiffies; |
035168ab | 4711 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4712 | &calldata->arg.seq_args, |
2240a9e2 TM |
4713 | &calldata->res.seq_res, |
4714 | task) != 0) | |
4715 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4716 | return; |
4717 | out_no_action: | |
4718 | task->tk_action = NULL; | |
4719 | out_wait: | |
4720 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4721 | } |
4722 | ||
963d8fe5 | 4723 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4724 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4725 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4726 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4727 | }; |
4728 | ||
a5d16a4d TM |
4729 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4730 | struct nfs_open_context *ctx, | |
4731 | struct nfs4_lock_state *lsp, | |
4732 | struct nfs_seqid *seqid) | |
4733 | { | |
4734 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4735 | struct rpc_message msg = { |
4736 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4737 | .rpc_cred = ctx->cred, | |
4738 | }; | |
c970aa85 TM |
4739 | struct rpc_task_setup task_setup_data = { |
4740 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4741 | .rpc_message = &msg, |
c970aa85 | 4742 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4743 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4744 | .flags = RPC_TASK_ASYNC, |
4745 | }; | |
a5d16a4d | 4746 | |
137d6aca FF |
4747 | /* Ensure this is an unlock - when canceling a lock, the |
4748 | * canceled lock is passed in, and it won't be an unlock. | |
4749 | */ | |
4750 | fl->fl_type = F_UNLCK; | |
4751 | ||
a5d16a4d TM |
4752 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4753 | if (data == NULL) { | |
4754 | nfs_free_seqid(seqid); | |
4755 | return ERR_PTR(-ENOMEM); | |
4756 | } | |
4757 | ||
9d12b216 | 4758 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4759 | msg.rpc_argp = &data->arg; |
4760 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4761 | task_setup_data.callback_data = data; |
4762 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4763 | } |
4764 | ||
faf5f49c TM |
4765 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4766 | { | |
65b62a29 TM |
4767 | struct inode *inode = state->inode; |
4768 | struct nfs4_state_owner *sp = state->owner; | |
4769 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4770 | struct nfs_seqid *seqid; |
1da177e4 | 4771 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4772 | struct rpc_task *task; |
4773 | int status = 0; | |
536ff0f8 | 4774 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4775 | |
8d0a8a9d | 4776 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4777 | /* Unlock _before_ we do the RPC call */ |
4778 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4779 | /* Exclude nfs_delegation_claim_locks() */ |
4780 | mutex_lock(&sp->so_delegreturn_mutex); | |
4781 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4782 | down_read(&nfsi->rwsem); |
4783 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4784 | up_read(&nfsi->rwsem); | |
65b62a29 | 4785 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4786 | goto out; |
19e03c57 TM |
4787 | } |
4788 | up_read(&nfsi->rwsem); | |
65b62a29 | 4789 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4790 | if (status != 0) |
9b073574 TM |
4791 | goto out; |
4792 | /* Is this a delegated lock? */ | |
8d0a8a9d | 4793 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
4794 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
4795 | goto out; | |
8535b2be | 4796 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4797 | status = -ENOMEM; |
911d1aaf | 4798 | if (seqid == NULL) |
9b073574 | 4799 | goto out; |
cd3758e3 | 4800 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4801 | status = PTR_ERR(task); |
4802 | if (IS_ERR(task)) | |
9b073574 | 4803 | goto out; |
a5d16a4d | 4804 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4805 | rpc_put_task(task); |
9b073574 | 4806 | out: |
536ff0f8 | 4807 | request->fl_flags = fl_flags; |
1da177e4 LT |
4808 | return status; |
4809 | } | |
4810 | ||
a5d16a4d TM |
4811 | struct nfs4_lockdata { |
4812 | struct nfs_lock_args arg; | |
4813 | struct nfs_lock_res res; | |
4814 | struct nfs4_lock_state *lsp; | |
4815 | struct nfs_open_context *ctx; | |
4816 | struct file_lock fl; | |
26e976a8 | 4817 | unsigned long timestamp; |
a5d16a4d TM |
4818 | int rpc_status; |
4819 | int cancelled; | |
66179efe | 4820 | struct nfs_server *server; |
a5d16a4d TM |
4821 | }; |
4822 | ||
4823 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4824 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4825 | gfp_t gfp_mask) | |
1da177e4 | 4826 | { |
a5d16a4d TM |
4827 | struct nfs4_lockdata *p; |
4828 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4829 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4830 | |
8535b2be | 4831 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4832 | if (p == NULL) |
4833 | return NULL; | |
4834 | ||
4835 | p->arg.fh = NFS_FH(inode); | |
4836 | p->arg.fl = &p->fl; | |
8535b2be | 4837 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4838 | if (p->arg.open_seqid == NULL) |
4839 | goto out_free; | |
8535b2be | 4840 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4841 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4842 | goto out_free_seqid; |
a5d16a4d | 4843 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4844 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4845 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4846 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4847 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4848 | p->lsp = lsp; |
66179efe | 4849 | p->server = server; |
a5d16a4d TM |
4850 | atomic_inc(&lsp->ls_count); |
4851 | p->ctx = get_nfs_open_context(ctx); | |
4852 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4853 | return p; | |
2f74c0a0 TM |
4854 | out_free_seqid: |
4855 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4856 | out_free: |
4857 | kfree(p); | |
4858 | return NULL; | |
4859 | } | |
4860 | ||
4861 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4862 | { | |
4863 | struct nfs4_lockdata *data = calldata; | |
4864 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4865 | |
3110ff80 | 4866 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4867 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4868 | goto out_wait; |
a5d16a4d TM |
4869 | /* Do we need to do an open_to_lock_owner? */ |
4870 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4871 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4872 | goto out_release_lock_seqid; |
8fe72bac | 4873 | } |
8e472f33 | 4874 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 4875 | data->arg.new_lock_owner = 1; |
c1d51931 | 4876 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4877 | } else |
4878 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4879 | if (!nfs4_valid_open_stateid(state)) { |
4880 | data->rpc_status = -EBADF; | |
4881 | task->tk_action = NULL; | |
4882 | goto out_release_open_seqid; | |
4883 | } | |
26e976a8 | 4884 | data->timestamp = jiffies; |
035168ab TM |
4885 | if (nfs4_setup_sequence(data->server, |
4886 | &data->arg.seq_args, | |
2240a9e2 | 4887 | &data->res.seq_res, |
d9afbd1b | 4888 | task) == 0) |
66179efe | 4889 | return; |
5d422301 | 4890 | out_release_open_seqid: |
2240a9e2 TM |
4891 | nfs_release_seqid(data->arg.open_seqid); |
4892 | out_release_lock_seqid: | |
4893 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4894 | out_wait: |
4895 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4896 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4897 | } |
4898 | ||
a5d16a4d TM |
4899 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4900 | { | |
4901 | struct nfs4_lockdata *data = calldata; | |
4902 | ||
3110ff80 | 4903 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4904 | |
14516c3a TM |
4905 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4906 | return; | |
66179efe | 4907 | |
a5d16a4d | 4908 | data->rpc_status = task->tk_status; |
a5d16a4d | 4909 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4910 | if (data->rpc_status == 0) |
4911 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4912 | else | |
4913 | goto out; | |
4914 | } | |
4915 | if (data->rpc_status == 0) { | |
f597c537 | 4916 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4917 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4918 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4919 | } |
a5d16a4d | 4920 | out: |
3110ff80 | 4921 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4922 | } |
4923 | ||
4924 | static void nfs4_lock_release(void *calldata) | |
4925 | { | |
4926 | struct nfs4_lockdata *data = calldata; | |
4927 | ||
3110ff80 | 4928 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4929 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4930 | if (data->cancelled != 0) { |
4931 | struct rpc_task *task; | |
4932 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4933 | data->arg.lock_seqid); | |
4934 | if (!IS_ERR(task)) | |
bf294b41 | 4935 | rpc_put_task_async(task); |
3110ff80 | 4936 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4937 | } else |
4938 | nfs_free_seqid(data->arg.lock_seqid); | |
4939 | nfs4_put_lock_state(data->lsp); | |
4940 | put_nfs_open_context(data->ctx); | |
4941 | kfree(data); | |
3110ff80 | 4942 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4943 | } |
4944 | ||
4945 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4946 | .rpc_call_prepare = nfs4_lock_prepare, | |
4947 | .rpc_call_done = nfs4_lock_done, | |
4948 | .rpc_release = nfs4_lock_release, | |
4949 | }; | |
4950 | ||
2bee72a6 TM |
4951 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4952 | { | |
2bee72a6 TM |
4953 | switch (error) { |
4954 | case -NFS4ERR_ADMIN_REVOKED: | |
4955 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4956 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4957 | if (new_lock_owner != 0 || |
795a88c9 | 4958 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4959 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4960 | break; |
4961 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4962 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4963 | case -NFS4ERR_EXPIRED: |
4964 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4965 | }; |
4966 | } | |
4967 | ||
afe6c27c | 4968 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4969 | { |
4970 | struct nfs4_lockdata *data; | |
4971 | struct rpc_task *task; | |
5138fde0 TM |
4972 | struct rpc_message msg = { |
4973 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4974 | .rpc_cred = state->owner->so_cred, | |
4975 | }; | |
c970aa85 TM |
4976 | struct rpc_task_setup task_setup_data = { |
4977 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4978 | .rpc_message = &msg, |
c970aa85 | 4979 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4980 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4981 | .flags = RPC_TASK_ASYNC, |
4982 | }; | |
a5d16a4d TM |
4983 | int ret; |
4984 | ||
3110ff80 | 4985 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4986 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4987 | fl->fl_u.nfs4_fl.owner, |
4988 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4989 | if (data == NULL) |
4990 | return -ENOMEM; | |
4991 | if (IS_SETLKW(cmd)) | |
4992 | data->arg.block = 1; | |
9d12b216 | 4993 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4994 | msg.rpc_argp = &data->arg; |
4995 | msg.rpc_resp = &data->res; | |
c970aa85 | 4996 | task_setup_data.callback_data = data; |
8fe72bac TM |
4997 | if (recovery_type > NFS_LOCK_NEW) { |
4998 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4999 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5000 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5001 | } | |
c970aa85 | 5002 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5003 | if (IS_ERR(task)) |
a5d16a4d | 5004 | return PTR_ERR(task); |
a5d16a4d TM |
5005 | ret = nfs4_wait_for_completion_rpc_task(task); |
5006 | if (ret == 0) { | |
5007 | ret = data->rpc_status; | |
2bee72a6 TM |
5008 | if (ret) |
5009 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5010 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5011 | } else |
5012 | data->cancelled = 1; | |
e6b3c4db | 5013 | rpc_put_task(task); |
3110ff80 | 5014 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5015 | return ret; |
1da177e4 LT |
5016 | } |
5017 | ||
5018 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5019 | { | |
202b50dc | 5020 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5021 | struct nfs4_exception exception = { |
5022 | .inode = state->inode, | |
5023 | }; | |
202b50dc TM |
5024 | int err; |
5025 | ||
5026 | do { | |
42a2d13e TM |
5027 | /* Cache the lock if possible... */ |
5028 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5029 | return 0; | |
afe6c27c | 5030 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5031 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5032 | break; |
5033 | nfs4_handle_exception(server, err, &exception); | |
5034 | } while (exception.retry); | |
5035 | return err; | |
1da177e4 LT |
5036 | } |
5037 | ||
5038 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5039 | { | |
202b50dc | 5040 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5041 | struct nfs4_exception exception = { |
5042 | .inode = state->inode, | |
5043 | }; | |
202b50dc TM |
5044 | int err; |
5045 | ||
6bfc93ef TM |
5046 | err = nfs4_set_lock_state(state, request); |
5047 | if (err != 0) | |
5048 | return err; | |
202b50dc | 5049 | do { |
42a2d13e TM |
5050 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5051 | return 0; | |
afe6c27c | 5052 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
5053 | switch (err) { |
5054 | default: | |
5055 | goto out; | |
5056 | case -NFS4ERR_GRACE: | |
5057 | case -NFS4ERR_DELAY: | |
5058 | nfs4_handle_exception(server, err, &exception); | |
5059 | err = 0; | |
5060 | } | |
202b50dc | 5061 | } while (exception.retry); |
a9ed2e25 | 5062 | out: |
202b50dc | 5063 | return err; |
1da177e4 LT |
5064 | } |
5065 | ||
f062eb6c | 5066 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5067 | /** |
5068 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5069 | * | |
5070 | * @state: NFSv4 state for an inode | |
5071 | * | |
5072 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5073 | * Otherwise a negative NFS4ERR value is returned. | |
5074 | */ | |
b01dd1d8 | 5075 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5076 | { |
eb64cf96 | 5077 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5078 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5079 | struct nfs_server *server = NFS_SERVER(state->inode); |
5080 | ||
b01dd1d8 | 5081 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5082 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5083 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5084 | ||
5085 | status = nfs41_test_stateid(server, | |
5086 | &lsp->ls_stateid, | |
5087 | cred); | |
b01dd1d8 | 5088 | if (status != NFS_OK) { |
3e60ffdd CL |
5089 | /* Free the stateid unless the server |
5090 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5091 | if (status != -NFS4ERR_BAD_STATEID) |
5092 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5093 | &lsp->ls_stateid, |
5094 | cred); | |
795a88c9 | 5095 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5096 | ret = status; |
5097 | } | |
5098 | } | |
5099 | }; | |
5100 | ||
5101 | return ret; | |
5102 | } | |
5103 | ||
5104 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5105 | { | |
5106 | int status = NFS_OK; | |
5107 | ||
5108 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5109 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5110 | if (status != NFS_OK) |
5111 | status = nfs4_lock_expired(state, request); | |
5112 | return status; | |
f062eb6c BS |
5113 | } |
5114 | #endif | |
5115 | ||
1da177e4 LT |
5116 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5117 | { | |
9a99af49 | 5118 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5119 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5120 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5121 | unsigned int seq; |
8e469ebd | 5122 | int status = -ENOLCK; |
1da177e4 | 5123 | |
8e469ebd TM |
5124 | if ((fl_flags & FL_POSIX) && |
5125 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5126 | goto out; | |
6bfc93ef | 5127 | /* Is this a delegated open? */ |
6bfc93ef TM |
5128 | status = nfs4_set_lock_state(state, request); |
5129 | if (status != 0) | |
5130 | goto out; | |
01c3b861 TM |
5131 | request->fl_flags |= FL_ACCESS; |
5132 | status = do_vfs_lock(request->fl_file, request); | |
5133 | if (status < 0) | |
5134 | goto out; | |
19e03c57 | 5135 | down_read(&nfsi->rwsem); |
01c3b861 | 5136 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5137 | /* Yes: cache locks! */ |
01c3b861 | 5138 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5139 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5140 | status = do_vfs_lock(request->fl_file, request); | |
5141 | goto out_unlock; | |
01c3b861 | 5142 | } |
9a99af49 TM |
5143 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5144 | up_read(&nfsi->rwsem); | |
afe6c27c | 5145 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5146 | if (status != 0) |
9a99af49 TM |
5147 | goto out; |
5148 | down_read(&nfsi->rwsem); | |
5149 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5150 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5151 | goto out_unlock; |
9a99af49 | 5152 | } |
6bfc93ef | 5153 | /* Note: we always want to sleep here! */ |
01c3b861 | 5154 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5155 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5156 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5157 | "manager!\n", __func__); | |
01c3b861 | 5158 | out_unlock: |
19e03c57 | 5159 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5160 | out: |
5161 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5162 | return status; |
5163 | } | |
5164 | ||
5165 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5166 | { | |
a1d0b5ee TM |
5167 | struct nfs4_exception exception = { |
5168 | .state = state, | |
05ffe24f | 5169 | .inode = state->inode, |
a1d0b5ee | 5170 | }; |
1da177e4 LT |
5171 | int err; |
5172 | ||
5173 | do { | |
965b5d67 TM |
5174 | err = _nfs4_proc_setlk(state, cmd, request); |
5175 | if (err == -NFS4ERR_DENIED) | |
5176 | err = -EAGAIN; | |
1da177e4 | 5177 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5178 | err, &exception); |
1da177e4 LT |
5179 | } while (exception.retry); |
5180 | return err; | |
5181 | } | |
5182 | ||
5183 | static int | |
5184 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5185 | { | |
5186 | struct nfs_open_context *ctx; | |
5187 | struct nfs4_state *state; | |
5188 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5189 | int status; | |
5190 | ||
5191 | /* verify open state */ | |
cd3758e3 | 5192 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5193 | state = ctx->state; |
5194 | ||
5195 | if (request->fl_start < 0 || request->fl_end < 0) | |
5196 | return -EINVAL; | |
5197 | ||
d953126a TM |
5198 | if (IS_GETLK(cmd)) { |
5199 | if (state != NULL) | |
5200 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5201 | return 0; | |
5202 | } | |
1da177e4 LT |
5203 | |
5204 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5205 | return -EINVAL; | |
5206 | ||
d953126a TM |
5207 | if (request->fl_type == F_UNLCK) { |
5208 | if (state != NULL) | |
5209 | return nfs4_proc_unlck(state, cmd, request); | |
5210 | return 0; | |
5211 | } | |
1da177e4 | 5212 | |
d953126a TM |
5213 | if (state == NULL) |
5214 | return -ENOLCK; | |
55725513 TM |
5215 | /* |
5216 | * Don't rely on the VFS having checked the file open mode, | |
5217 | * since it won't do this for flock() locks. | |
5218 | */ | |
f44106e2 | 5219 | switch (request->fl_type) { |
55725513 TM |
5220 | case F_RDLCK: |
5221 | if (!(filp->f_mode & FMODE_READ)) | |
5222 | return -EBADF; | |
5223 | break; | |
5224 | case F_WRLCK: | |
5225 | if (!(filp->f_mode & FMODE_WRITE)) | |
5226 | return -EBADF; | |
5227 | } | |
5228 | ||
1da177e4 LT |
5229 | do { |
5230 | status = nfs4_proc_setlk(state, cmd, request); | |
5231 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5232 | break; | |
5233 | timeout = nfs4_set_lock_task_retry(timeout); | |
5234 | status = -ERESTARTSYS; | |
5235 | if (signalled()) | |
5236 | break; | |
5237 | } while(status < 0); | |
1da177e4 LT |
5238 | return status; |
5239 | } | |
5240 | ||
db4f2e63 | 5241 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5242 | { |
5243 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5244 | int err; |
5245 | ||
5246 | err = nfs4_set_lock_state(state, fl); | |
5247 | if (err != 0) | |
db4f2e63 | 5248 | return err; |
4a706fa0 | 5249 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5250 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5251 | } |
6b3b5496 | 5252 | |
cf470c3e TM |
5253 | struct nfs_release_lockowner_data { |
5254 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5255 | struct nfs_server *server; |
cf470c3e TM |
5256 | struct nfs_release_lockowner_args args; |
5257 | }; | |
5258 | ||
d3c7b7cc TM |
5259 | static void nfs4_release_lockowner_release(void *calldata) |
5260 | { | |
cf470c3e | 5261 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5262 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5263 | kfree(calldata); |
5264 | } | |
5265 | ||
17280175 | 5266 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5267 | .rpc_release = nfs4_release_lockowner_release, |
5268 | }; | |
5269 | ||
c8b2d0bf | 5270 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5271 | { |
cf470c3e | 5272 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5273 | struct rpc_message msg = { |
5274 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5275 | }; | |
5276 | ||
5277 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5278 | return -EINVAL; |
5279 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5280 | if (!data) | |
5281 | return -ENOMEM; | |
5282 | data->lsp = lsp; | |
5ae67c4f | 5283 | data->server = server; |
cf470c3e TM |
5284 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5285 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5286 | data->args.lock_owner.s_dev = server->s_dev; | |
5287 | msg.rpc_argp = &data->args; | |
5288 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5289 | return 0; | |
d3c7b7cc TM |
5290 | } |
5291 | ||
aa1870af BF |
5292 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5293 | ||
64c2ce8b AK |
5294 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5295 | const void *buf, size_t buflen, | |
5296 | int flags, int type) | |
6b3b5496 | 5297 | { |
64c2ce8b AK |
5298 | if (strcmp(key, "") != 0) |
5299 | return -EINVAL; | |
4b580ee3 | 5300 | |
64c2ce8b | 5301 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5302 | } |
5303 | ||
64c2ce8b AK |
5304 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5305 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5306 | { |
64c2ce8b AK |
5307 | if (strcmp(key, "") != 0) |
5308 | return -EINVAL; | |
aa1870af | 5309 | |
64c2ce8b | 5310 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5311 | } |
5312 | ||
64c2ce8b AK |
5313 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5314 | size_t list_len, const char *name, | |
5315 | size_t name_len, int type) | |
6b3b5496 | 5316 | { |
64c2ce8b | 5317 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5318 | |
096455a2 BF |
5319 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5320 | return 0; | |
64c2ce8b AK |
5321 | |
5322 | if (list && len <= list_len) | |
5323 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5324 | return len; |
6b3b5496 BF |
5325 | } |
5326 | ||
533eb461 AA |
5327 | /* |
5328 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5329 | */ | |
69aaaae1 TM |
5330 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5331 | { | |
533eb461 AA |
5332 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5333 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5334 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5335 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5336 | return; |
5337 | ||
5338 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5339 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5340 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5341 | fattr->nlink = 2; | |
5342 | } | |
5343 | ||
f05d147f BS |
5344 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5345 | const struct qstr *name, | |
5346 | struct nfs4_fs_locations *fs_locations, | |
5347 | struct page *page) | |
683b57b4 TM |
5348 | { |
5349 | struct nfs_server *server = NFS_SERVER(dir); | |
5350 | u32 bitmask[2] = { | |
361e624f | 5351 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5352 | }; |
5353 | struct nfs4_fs_locations_arg args = { | |
5354 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5355 | .name = name, |
683b57b4 TM |
5356 | .page = page, |
5357 | .bitmask = bitmask, | |
5358 | }; | |
22958463 BH |
5359 | struct nfs4_fs_locations_res res = { |
5360 | .fs_locations = fs_locations, | |
5361 | }; | |
683b57b4 TM |
5362 | struct rpc_message msg = { |
5363 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5364 | .rpc_argp = &args, | |
22958463 | 5365 | .rpc_resp = &res, |
683b57b4 TM |
5366 | }; |
5367 | int status; | |
5368 | ||
3110ff80 | 5369 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5370 | |
5371 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5372 | * is not supported */ | |
5373 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5374 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5375 | else | |
5376 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5377 | ||
c228fd3a | 5378 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5379 | fs_locations->server = server; |
830b8e33 | 5380 | fs_locations->nlocations = 0; |
f05d147f | 5381 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5382 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5383 | return status; |
5384 | } | |
5385 | ||
f05d147f BS |
5386 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5387 | const struct qstr *name, | |
5388 | struct nfs4_fs_locations *fs_locations, | |
5389 | struct page *page) | |
db0a9593 BS |
5390 | { |
5391 | struct nfs4_exception exception = { }; | |
5392 | int err; | |
5393 | do { | |
5394 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5395 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5396 | &exception); |
5397 | } while (exception.retry); | |
5398 | return err; | |
5399 | } | |
5400 | ||
5a5ea0d4 BS |
5401 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5402 | { | |
5403 | int status; | |
5404 | struct nfs4_secinfo_arg args = { | |
5405 | .dir_fh = NFS_FH(dir), | |
5406 | .name = name, | |
5407 | }; | |
5408 | struct nfs4_secinfo_res res = { | |
5409 | .flavors = flavors, | |
5410 | }; | |
5411 | struct rpc_message msg = { | |
5412 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5413 | .rpc_argp = &args, | |
5414 | .rpc_resp = &res, | |
5415 | }; | |
5416 | ||
5417 | dprintk("NFS call secinfo %s\n", name->name); | |
5418 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5419 | dprintk("NFS reply secinfo: %d\n", status); | |
5420 | return status; | |
5421 | } | |
5422 | ||
72de53ec BS |
5423 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5424 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5425 | { |
5426 | struct nfs4_exception exception = { }; | |
5427 | int err; | |
5428 | do { | |
5429 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5430 | _nfs4_proc_secinfo(dir, name, flavors), | |
5431 | &exception); | |
5432 | } while (exception.retry); | |
5433 | return err; | |
5434 | } | |
5435 | ||
557134a3 | 5436 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5437 | /* |
5438 | * Check the exchange flags returned by the server for invalid flags, having | |
5439 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5440 | * DS flags set. | |
5441 | */ | |
5442 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5443 | { | |
5444 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5445 | goto out_inval; | |
5446 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5447 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5448 | goto out_inval; | |
5449 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5450 | goto out_inval; | |
5451 | return NFS_OK; | |
5452 | out_inval: | |
5453 | return -NFS4ERR_INVAL; | |
5454 | } | |
5455 | ||
78fe0f41 | 5456 | static bool |
79d4e1f0 CL |
5457 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5458 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5459 | { |
5460 | if (a->server_scope_sz == b->server_scope_sz && | |
5461 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5462 | return true; | |
5463 | ||
5464 | return false; | |
5465 | } | |
5466 | ||
7c44f1ae WAA |
5467 | /* |
5468 | * nfs4_proc_bind_conn_to_session() | |
5469 | * | |
5470 | * The 4.1 client currently uses the same TCP connection for the | |
5471 | * fore and backchannel. | |
5472 | */ | |
2cf047c9 | 5473 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5474 | { |
5475 | int status; | |
5476 | struct nfs41_bind_conn_to_session_res res; | |
5477 | struct rpc_message msg = { | |
5478 | .rpc_proc = | |
5479 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5480 | .rpc_argp = clp, | |
5481 | .rpc_resp = &res, | |
2cf047c9 | 5482 | .rpc_cred = cred, |
7c44f1ae WAA |
5483 | }; |
5484 | ||
5485 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5486 | |
5487 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5488 | if (unlikely(res.session == NULL)) { | |
5489 | status = -ENOMEM; | |
5490 | goto out; | |
5491 | } | |
5492 | ||
5493 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5494 | if (status == 0) { | |
5495 | if (memcmp(res.session->sess_id.data, | |
5496 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5497 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5498 | status = -EIO; | |
5499 | goto out_session; | |
5500 | } | |
5501 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5502 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5503 | __func__); | |
5504 | status = -EIO; | |
5505 | goto out_session; | |
5506 | } | |
5507 | if (res.use_conn_in_rdma_mode) { | |
5508 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5509 | __func__); | |
5510 | status = -EIO; | |
5511 | goto out_session; | |
5512 | } | |
5513 | } | |
5514 | out_session: | |
5515 | kfree(res.session); | |
5516 | out: | |
5517 | dprintk("<-- %s status= %d\n", __func__, status); | |
5518 | return status; | |
5519 | } | |
5520 | ||
99fe60d0 BH |
5521 | /* |
5522 | * nfs4_proc_exchange_id() | |
5523 | * | |
6bbb4ae8 CL |
5524 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5525 | * | |
99fe60d0 BH |
5526 | * Since the clientid has expired, all compounds using sessions |
5527 | * associated with the stale clientid will be returning | |
5528 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5529 | * be in some phase of session reset. | |
5530 | */ | |
4d643d1d | 5531 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5532 | { |
5533 | nfs4_verifier verifier; | |
5534 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5535 | .verifier = &verifier, |
99fe60d0 | 5536 | .client = clp, |
4f0b429d TM |
5537 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
5538 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
5539 | }; |
5540 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5541 | 0 |
99fe60d0 BH |
5542 | }; |
5543 | int status; | |
5544 | struct rpc_message msg = { | |
5545 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5546 | .rpc_argp = &args, | |
5547 | .rpc_resp = &res, | |
5548 | .rpc_cred = cred, | |
5549 | }; | |
99fe60d0 | 5550 | |
f092075d | 5551 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5552 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5553 | sizeof(args.id)); | |
6bbb4ae8 CL |
5554 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5555 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5556 | args.id_len, args.id); | |
99fe60d0 | 5557 | |
acdeb69d | 5558 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5559 | GFP_NOFS); |
acdeb69d | 5560 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5561 | status = -ENOMEM; |
5562 | goto out; | |
5563 | } | |
78fe0f41 | 5564 | |
79d4e1f0 | 5565 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5566 | GFP_NOFS); |
177313f1 | 5567 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5568 | status = -ENOMEM; |
acdeb69d | 5569 | goto out_server_owner; |
abe9a6d5 | 5570 | } |
78fe0f41 | 5571 | |
bbafffd2 | 5572 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5573 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5574 | status = -ENOMEM; |
5575 | goto out_server_scope; | |
5576 | } | |
5577 | ||
1bd714f2 | 5578 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5579 | if (status == 0) |
32b01310 | 5580 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5581 | |
acdeb69d | 5582 | if (status == 0) { |
32b01310 TM |
5583 | clp->cl_clientid = res.clientid; |
5584 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5585 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5586 | clp->cl_seqid = res.seqid; | |
5587 | ||
acdeb69d CL |
5588 | kfree(clp->cl_serverowner); |
5589 | clp->cl_serverowner = res.server_owner; | |
5590 | res.server_owner = NULL; | |
78fe0f41 | 5591 | |
7d2ed9ac | 5592 | /* use the most recent implementation id */ |
59155546 CL |
5593 | kfree(clp->cl_implid); |
5594 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5595 | |
177313f1 | 5596 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5597 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5598 | res.server_scope)) { |
5599 | dprintk("%s: server_scope mismatch detected\n", | |
5600 | __func__); | |
5601 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5602 | kfree(clp->cl_serverscope); |
5603 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5604 | } |
5605 | ||
177313f1 | 5606 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5607 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5608 | goto out; |
5609 | } | |
32b01310 TM |
5610 | } else |
5611 | kfree(res.impl_id); | |
7d2ed9ac | 5612 | |
acdeb69d CL |
5613 | out_server_owner: |
5614 | kfree(res.server_owner); | |
7d2ed9ac | 5615 | out_server_scope: |
abe9a6d5 WAA |
5616 | kfree(res.server_scope); |
5617 | out: | |
177313f1 | 5618 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5619 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5620 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5621 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5622 | clp->cl_implid->date.seconds, |
5623 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5624 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5625 | return status; |
5626 | } | |
5627 | ||
66245539 TM |
5628 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5629 | struct rpc_cred *cred) | |
5630 | { | |
5631 | struct rpc_message msg = { | |
5632 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5633 | .rpc_argp = clp, | |
5634 | .rpc_cred = cred, | |
5635 | }; | |
5636 | int status; | |
5637 | ||
5638 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5639 | if (status) | |
02c67525 | 5640 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5641 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5642 | return status; | |
5643 | } | |
5644 | ||
5645 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5646 | struct rpc_cred *cred) | |
5647 | { | |
5648 | unsigned int loop; | |
5649 | int ret; | |
5650 | ||
5651 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5652 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5653 | switch (ret) { | |
5654 | case -NFS4ERR_DELAY: | |
5655 | case -NFS4ERR_CLIENTID_BUSY: | |
5656 | ssleep(1); | |
5657 | break; | |
5658 | default: | |
5659 | return ret; | |
5660 | } | |
5661 | } | |
5662 | return 0; | |
5663 | } | |
5664 | ||
5665 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5666 | { | |
5667 | struct rpc_cred *cred; | |
5668 | int ret = 0; | |
5669 | ||
5670 | if (clp->cl_mvops->minor_version < 1) | |
5671 | goto out; | |
5672 | if (clp->cl_exchange_flags == 0) | |
5673 | goto out; | |
05f4c350 CL |
5674 | if (clp->cl_preserve_clid) |
5675 | goto out; | |
66245539 TM |
5676 | cred = nfs4_get_exchange_id_cred(clp); |
5677 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5678 | if (cred) | |
5679 | put_rpccred(cred); | |
5680 | switch (ret) { | |
5681 | case 0: | |
5682 | case -NFS4ERR_STALE_CLIENTID: | |
5683 | clp->cl_exchange_flags = 0; | |
5684 | } | |
5685 | out: | |
5686 | return ret; | |
5687 | } | |
5688 | ||
2050f0cc AA |
5689 | struct nfs4_get_lease_time_data { |
5690 | struct nfs4_get_lease_time_args *args; | |
5691 | struct nfs4_get_lease_time_res *res; | |
5692 | struct nfs_client *clp; | |
5693 | }; | |
5694 | ||
5695 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5696 | void *calldata) | |
5697 | { | |
2050f0cc AA |
5698 | struct nfs4_get_lease_time_data *data = |
5699 | (struct nfs4_get_lease_time_data *)calldata; | |
5700 | ||
5701 | dprintk("--> %s\n", __func__); | |
5702 | /* just setup sequence, do not trigger session recovery | |
5703 | since we're invoked within one */ | |
d9afbd1b TM |
5704 | nfs41_setup_sequence(data->clp->cl_session, |
5705 | &data->args->la_seq_args, | |
5706 | &data->res->lr_seq_res, | |
5707 | task); | |
2050f0cc AA |
5708 | dprintk("<-- %s\n", __func__); |
5709 | } | |
5710 | ||
5711 | /* | |
5712 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5713 | * from sequence operation or clientid errors. | |
5714 | */ | |
5715 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5716 | { | |
5717 | struct nfs4_get_lease_time_data *data = | |
5718 | (struct nfs4_get_lease_time_data *)calldata; | |
5719 | ||
5720 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5721 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5722 | return; | |
2050f0cc AA |
5723 | switch (task->tk_status) { |
5724 | case -NFS4ERR_DELAY: | |
5725 | case -NFS4ERR_GRACE: | |
5726 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5727 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5728 | task->tk_status = 0; | |
a8a4ae3a AA |
5729 | /* fall through */ |
5730 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5731 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5732 | return; |
5733 | } | |
2050f0cc AA |
5734 | dprintk("<-- %s\n", __func__); |
5735 | } | |
5736 | ||
17280175 | 5737 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5738 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5739 | .rpc_call_done = nfs4_get_lease_time_done, | |
5740 | }; | |
5741 | ||
5742 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5743 | { | |
5744 | struct rpc_task *task; | |
5745 | struct nfs4_get_lease_time_args args; | |
5746 | struct nfs4_get_lease_time_res res = { | |
5747 | .lr_fsinfo = fsinfo, | |
5748 | }; | |
5749 | struct nfs4_get_lease_time_data data = { | |
5750 | .args = &args, | |
5751 | .res = &res, | |
5752 | .clp = clp, | |
5753 | }; | |
5754 | struct rpc_message msg = { | |
5755 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5756 | .rpc_argp = &args, | |
5757 | .rpc_resp = &res, | |
5758 | }; | |
5759 | struct rpc_task_setup task_setup = { | |
5760 | .rpc_client = clp->cl_rpcclient, | |
5761 | .rpc_message = &msg, | |
5762 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5763 | .callback_data = &data, |
5764 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5765 | }; |
5766 | int status; | |
5767 | ||
9d12b216 | 5768 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5769 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5770 | dprintk("--> %s\n", __func__); |
5771 | task = rpc_run_task(&task_setup); | |
5772 | ||
5773 | if (IS_ERR(task)) | |
5774 | status = PTR_ERR(task); | |
5775 | else { | |
5776 | status = task->tk_status; | |
5777 | rpc_put_task(task); | |
5778 | } | |
5779 | dprintk("<-- %s return %d\n", __func__, status); | |
5780 | ||
5781 | return status; | |
5782 | } | |
5783 | ||
fc931582 AA |
5784 | /* |
5785 | * Initialize the values to be used by the client in CREATE_SESSION | |
5786 | * If nfs4_init_session set the fore channel request and response sizes, | |
5787 | * use them. | |
5788 | * | |
5789 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5790 | * always set csa_cachethis to FALSE because the current implementation | |
5791 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5792 | */ | |
5793 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5794 | { | |
5795 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5796 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5797 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5798 | |
5799 | if (mxrqst_sz == 0) | |
5800 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5801 | if (mxresp_sz == 0) | |
5802 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5803 | /* Fore channel attributes */ | |
fc931582 AA |
5804 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5805 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5806 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5807 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5808 | |
5809 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5810 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5811 | __func__, |
5812 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5813 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5814 | |
5815 | /* Back channel attributes */ | |
fc931582 AA |
5816 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5817 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5818 | args->bc_attrs.max_resp_sz_cached = 0; | |
5819 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5820 | args->bc_attrs.max_reqs = 1; | |
5821 | ||
5822 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5823 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5824 | __func__, | |
5825 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5826 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5827 | args->bc_attrs.max_reqs); | |
5828 | } | |
5829 | ||
43c2e885 | 5830 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5831 | { |
43c2e885 BF |
5832 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5833 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5834 | ||
43c2e885 BF |
5835 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5836 | return -EINVAL; | |
5837 | /* | |
5838 | * Our requested max_ops is the minimum we need; we're not | |
5839 | * prepared to break up compounds into smaller pieces than that. | |
5840 | * So, no point even trying to continue if the server won't | |
5841 | * cooperate: | |
5842 | */ | |
5843 | if (rcvd->max_ops < sent->max_ops) | |
5844 | return -EINVAL; | |
5845 | if (rcvd->max_reqs == 0) | |
5846 | return -EINVAL; | |
b4b9a0c1 VG |
5847 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5848 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5849 | return 0; |
8d35301d AA |
5850 | } |
5851 | ||
43c2e885 BF |
5852 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5853 | { | |
5854 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5855 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5856 | |
43c2e885 BF |
5857 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5858 | return -EINVAL; | |
5859 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5860 | return -EINVAL; | |
5861 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5862 | return -EINVAL; | |
5863 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5864 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5865 | return -EINVAL; |
b4b9a0c1 | 5866 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5867 | return -EINVAL; |
5868 | return 0; | |
5869 | } | |
8d35301d | 5870 | |
8d35301d AA |
5871 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5872 | struct nfs4_session *session) | |
5873 | { | |
43c2e885 | 5874 | int ret; |
8d35301d | 5875 | |
43c2e885 BF |
5876 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5877 | if (ret) | |
5878 | return ret; | |
5879 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5880 | } |
5881 | ||
848f5bda TM |
5882 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5883 | struct rpc_cred *cred) | |
fc931582 AA |
5884 | { |
5885 | struct nfs4_session *session = clp->cl_session; | |
5886 | struct nfs41_create_session_args args = { | |
5887 | .client = clp, | |
5888 | .cb_program = NFS4_CALLBACK, | |
5889 | }; | |
5890 | struct nfs41_create_session_res res = { | |
5891 | .client = clp, | |
5892 | }; | |
5893 | struct rpc_message msg = { | |
5894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5895 | .rpc_argp = &args, | |
5896 | .rpc_resp = &res, | |
848f5bda | 5897 | .rpc_cred = cred, |
fc931582 AA |
5898 | }; |
5899 | int status; | |
5900 | ||
5901 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5902 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5903 | |
1bd714f2 | 5904 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5905 | |
43095d39 | 5906 | if (!status) { |
8d35301d AA |
5907 | /* Verify the session's negotiated channel_attrs values */ |
5908 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5909 | /* Increment the clientid slot sequence id */ |
5910 | clp->cl_seqid++; | |
5911 | } | |
5912 | ||
5913 | return status; | |
5914 | } | |
5915 | ||
5916 | /* | |
5917 | * Issues a CREATE_SESSION operation to the server. | |
5918 | * It is the responsibility of the caller to verify the session is | |
5919 | * expired before calling this routine. | |
5920 | */ | |
848f5bda | 5921 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5922 | { |
5923 | int status; | |
5924 | unsigned *ptr; | |
fc931582 AA |
5925 | struct nfs4_session *session = clp->cl_session; |
5926 | ||
5927 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5928 | ||
848f5bda | 5929 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5930 | if (status) |
5931 | goto out; | |
5932 | ||
aacd5537 AA |
5933 | /* Init or reset the session slot tables */ |
5934 | status = nfs4_setup_session_slot_tables(session); | |
5935 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5936 | if (status) |
5937 | goto out; | |
5938 | ||
5939 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5940 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5941 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5942 | out: |
5943 | dprintk("<-- %s\n", __func__); | |
5944 | return status; | |
5945 | } | |
5946 | ||
0f3e66c6 AA |
5947 | /* |
5948 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5949 | * The caller must serialize access to this routine. | |
5950 | */ | |
848f5bda TM |
5951 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5952 | struct rpc_cred *cred) | |
0f3e66c6 | 5953 | { |
848f5bda TM |
5954 | struct rpc_message msg = { |
5955 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5956 | .rpc_argp = session, | |
5957 | .rpc_cred = cred, | |
5958 | }; | |
0f3e66c6 | 5959 | int status = 0; |
0f3e66c6 AA |
5960 | |
5961 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5962 | ||
5963 | /* session is still being setup */ | |
5964 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5965 | return status; | |
5966 | ||
1bd714f2 | 5967 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5968 | |
5969 | if (status) | |
08106ac7 | 5970 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5971 | "Session has been destroyed regardless...\n", status); |
5972 | ||
5973 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5974 | return status; | |
5975 | } | |
5976 | ||
fc01cea9 AA |
5977 | /* |
5978 | * Renew the cl_session lease. | |
5979 | */ | |
d5f8d3fe TM |
5980 | struct nfs4_sequence_data { |
5981 | struct nfs_client *clp; | |
5982 | struct nfs4_sequence_args args; | |
5983 | struct nfs4_sequence_res res; | |
5984 | }; | |
5985 | ||
dc96aef9 AB |
5986 | static void nfs41_sequence_release(void *data) |
5987 | { | |
d5f8d3fe TM |
5988 | struct nfs4_sequence_data *calldata = data; |
5989 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5990 | |
7135840f AB |
5991 | if (atomic_read(&clp->cl_count) > 1) |
5992 | nfs4_schedule_state_renewal(clp); | |
5993 | nfs_put_client(clp); | |
d5f8d3fe | 5994 | kfree(calldata); |
dc96aef9 AB |
5995 | } |
5996 | ||
aa5190d0 TM |
5997 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5998 | { | |
5999 | switch(task->tk_status) { | |
6000 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6001 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6002 | return -EAGAIN; | |
6003 | default: | |
0400a6b0 | 6004 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6005 | } |
6006 | return 0; | |
6007 | } | |
6008 | ||
dc96aef9 | 6009 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6010 | { |
d5f8d3fe TM |
6011 | struct nfs4_sequence_data *calldata = data; |
6012 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6013 | |
14516c3a TM |
6014 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6015 | return; | |
fc01cea9 AA |
6016 | |
6017 | if (task->tk_status < 0) { | |
6018 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6019 | if (atomic_read(&clp->cl_count) == 1) |
6020 | goto out; | |
fc01cea9 | 6021 | |
aa5190d0 TM |
6022 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6023 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6024 | return; |
6025 | } | |
6026 | } | |
fc01cea9 | 6027 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6028 | out: |
fc01cea9 AA |
6029 | dprintk("<-- %s\n", __func__); |
6030 | } | |
6031 | ||
6032 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6033 | { | |
d5f8d3fe TM |
6034 | struct nfs4_sequence_data *calldata = data; |
6035 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6036 | struct nfs4_sequence_args *args; |
6037 | struct nfs4_sequence_res *res; | |
6038 | ||
fc01cea9 AA |
6039 | args = task->tk_msg.rpc_argp; |
6040 | res = task->tk_msg.rpc_resp; | |
6041 | ||
d9afbd1b | 6042 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6043 | } |
6044 | ||
6045 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6046 | .rpc_call_done = nfs41_sequence_call_done, | |
6047 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6048 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6049 | }; |
6050 | ||
8fe72bac TM |
6051 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6052 | struct rpc_cred *cred, | |
6053 | bool is_privileged) | |
fc01cea9 | 6054 | { |
d5f8d3fe | 6055 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6056 | struct rpc_message msg = { |
6057 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6058 | .rpc_cred = cred, | |
6059 | }; | |
71ac6da9 TM |
6060 | struct rpc_task_setup task_setup_data = { |
6061 | .rpc_client = clp->cl_rpcclient, | |
6062 | .rpc_message = &msg, | |
8fe72bac | 6063 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6064 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6065 | }; |
fc01cea9 | 6066 | |
7135840f | 6067 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6068 | return ERR_PTR(-EIO); |
dfb4f309 | 6069 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6070 | if (calldata == NULL) { |
7135840f | 6071 | nfs_put_client(clp); |
71ac6da9 | 6072 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6073 | } |
9d12b216 | 6074 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6075 | if (is_privileged) |
6076 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6077 | msg.rpc_argp = &calldata->args; |
6078 | msg.rpc_resp = &calldata->res; | |
6079 | calldata->clp = clp; | |
71ac6da9 | 6080 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6081 | |
71ac6da9 TM |
6082 | return rpc_run_task(&task_setup_data); |
6083 | } | |
6084 | ||
2f60ea6b | 6085 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6086 | { |
6087 | struct rpc_task *task; | |
6088 | int ret = 0; | |
6089 | ||
2f60ea6b TM |
6090 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6091 | return 0; | |
8fe72bac | 6092 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6093 | if (IS_ERR(task)) |
6094 | ret = PTR_ERR(task); | |
6095 | else | |
bf294b41 | 6096 | rpc_put_task_async(task); |
71ac6da9 TM |
6097 | dprintk("<-- %s status=%d\n", __func__, ret); |
6098 | return ret; | |
6099 | } | |
6100 | ||
6101 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6102 | { | |
6103 | struct rpc_task *task; | |
6104 | int ret; | |
6105 | ||
8fe72bac | 6106 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6107 | if (IS_ERR(task)) { |
6108 | ret = PTR_ERR(task); | |
6109 | goto out; | |
6110 | } | |
6111 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6112 | if (!ret) { |
6113 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6114 | ||
6115 | if (task->tk_status == 0) | |
6116 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6117 | ret = task->tk_status; |
b4410c2f | 6118 | } |
71ac6da9 TM |
6119 | rpc_put_task(task); |
6120 | out: | |
6121 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6122 | return ret; | |
fc01cea9 AA |
6123 | } |
6124 | ||
fce5c838 RL |
6125 | struct nfs4_reclaim_complete_data { |
6126 | struct nfs_client *clp; | |
6127 | struct nfs41_reclaim_complete_args arg; | |
6128 | struct nfs41_reclaim_complete_res res; | |
6129 | }; | |
6130 | ||
6131 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6132 | { | |
6133 | struct nfs4_reclaim_complete_data *calldata = data; | |
6134 | ||
d9afbd1b TM |
6135 | nfs41_setup_sequence(calldata->clp->cl_session, |
6136 | &calldata->arg.seq_args, | |
6137 | &calldata->res.seq_res, | |
6138 | task); | |
fce5c838 RL |
6139 | } |
6140 | ||
aa5190d0 TM |
6141 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6142 | { | |
6143 | switch(task->tk_status) { | |
6144 | case 0: | |
6145 | case -NFS4ERR_COMPLETE_ALREADY: | |
6146 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6147 | break; | |
6148 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6149 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6150 | /* fall through */ |
6151 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6152 | return -EAGAIN; |
6153 | default: | |
0400a6b0 | 6154 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6155 | } |
6156 | return 0; | |
6157 | } | |
6158 | ||
fce5c838 RL |
6159 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6160 | { | |
6161 | struct nfs4_reclaim_complete_data *calldata = data; | |
6162 | struct nfs_client *clp = calldata->clp; | |
6163 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6164 | ||
6165 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6166 | if (!nfs41_sequence_done(task, res)) |
6167 | return; | |
fce5c838 | 6168 | |
aa5190d0 TM |
6169 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6170 | rpc_restart_call_prepare(task); | |
6171 | return; | |
6172 | } | |
fce5c838 RL |
6173 | dprintk("<-- %s\n", __func__); |
6174 | } | |
6175 | ||
6176 | static void nfs4_free_reclaim_complete_data(void *data) | |
6177 | { | |
6178 | struct nfs4_reclaim_complete_data *calldata = data; | |
6179 | ||
6180 | kfree(calldata); | |
6181 | } | |
6182 | ||
6183 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6184 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6185 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6186 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6187 | }; | |
6188 | ||
6189 | /* | |
6190 | * Issue a global reclaim complete. | |
6191 | */ | |
965e9c23 TM |
6192 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6193 | struct rpc_cred *cred) | |
fce5c838 RL |
6194 | { |
6195 | struct nfs4_reclaim_complete_data *calldata; | |
6196 | struct rpc_task *task; | |
6197 | struct rpc_message msg = { | |
6198 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6199 | .rpc_cred = cred, |
fce5c838 RL |
6200 | }; |
6201 | struct rpc_task_setup task_setup_data = { | |
6202 | .rpc_client = clp->cl_rpcclient, | |
6203 | .rpc_message = &msg, | |
6204 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6205 | .flags = RPC_TASK_ASYNC, | |
6206 | }; | |
6207 | int status = -ENOMEM; | |
6208 | ||
6209 | dprintk("--> %s\n", __func__); | |
8535b2be | 6210 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6211 | if (calldata == NULL) |
6212 | goto out; | |
6213 | calldata->clp = clp; | |
6214 | calldata->arg.one_fs = 0; | |
fce5c838 | 6215 | |
9d12b216 | 6216 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6217 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6218 | msg.rpc_argp = &calldata->arg; |
6219 | msg.rpc_resp = &calldata->res; | |
6220 | task_setup_data.callback_data = calldata; | |
6221 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6222 | if (IS_ERR(task)) { |
fce5c838 | 6223 | status = PTR_ERR(task); |
acf82b85 DC |
6224 | goto out; |
6225 | } | |
c34c32ea AA |
6226 | status = nfs4_wait_for_completion_rpc_task(task); |
6227 | if (status == 0) | |
6228 | status = task->tk_status; | |
fce5c838 | 6229 | rpc_put_task(task); |
acf82b85 | 6230 | return 0; |
fce5c838 RL |
6231 | out: |
6232 | dprintk("<-- %s status=%d\n", __func__, status); | |
6233 | return status; | |
6234 | } | |
b1f69b75 AA |
6235 | |
6236 | static void | |
6237 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6238 | { | |
6239 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6240 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6241 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6242 | |
6243 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6244 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6245 | * right now covering the LAYOUTGET we are about to send. | |
6246 | * However, that is not so catastrophic, and there seems | |
6247 | * to be no way to prevent it completely. | |
6248 | */ | |
6ba7db34 | 6249 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6250 | &lgp->res.seq_res, task)) |
b1f69b75 | 6251 | return; |
cf7d63f1 FI |
6252 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6253 | NFS_I(lgp->args.inode)->layout, | |
6254 | lgp->args.ctx->state)) { | |
6255 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6256 | } |
b1f69b75 AA |
6257 | } |
6258 | ||
6259 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6260 | { | |
6261 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6262 | struct inode *inode = lgp->args.inode; |
6263 | struct nfs_server *server = NFS_SERVER(inode); | |
6264 | struct pnfs_layout_hdr *lo; | |
6265 | struct nfs4_state *state = NULL; | |
30005121 | 6266 | unsigned long timeo, giveup; |
b1f69b75 AA |
6267 | |
6268 | dprintk("--> %s\n", __func__); | |
6269 | ||
6ba7db34 | 6270 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6271 | goto out; |
b1f69b75 AA |
6272 | |
6273 | switch (task->tk_status) { | |
6274 | case 0: | |
ee314c2a | 6275 | goto out; |
b1f69b75 AA |
6276 | case -NFS4ERR_LAYOUTTRYLATER: |
6277 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6278 | timeo = rpc_get_timeout(task->tk_client); |
6279 | giveup = lgp->args.timestamp + timeo; | |
6280 | if (time_after(giveup, jiffies)) | |
6281 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6282 | break; |
6283 | case -NFS4ERR_EXPIRED: | |
6284 | case -NFS4ERR_BAD_STATEID: | |
6285 | spin_lock(&inode->i_lock); | |
6286 | lo = NFS_I(inode)->layout; | |
6287 | if (!lo || list_empty(&lo->plh_segs)) { | |
6288 | spin_unlock(&inode->i_lock); | |
6289 | /* If the open stateid was bad, then recover it. */ | |
6290 | state = lgp->args.ctx->state; | |
6291 | } else { | |
6292 | LIST_HEAD(head); | |
6293 | ||
6294 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6295 | spin_unlock(&inode->i_lock); | |
6296 | /* Mark the bad layout state as invalid, then | |
6297 | * retry using the open stateid. */ | |
6298 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6299 | } |
6300 | } | |
ee314c2a TM |
6301 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6302 | rpc_restart_call_prepare(task); | |
6303 | out: | |
b1f69b75 AA |
6304 | dprintk("<-- %s\n", __func__); |
6305 | } | |
6306 | ||
8554116e IK |
6307 | static size_t max_response_pages(struct nfs_server *server) |
6308 | { | |
6309 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6310 | return nfs_page_array_len(0, max_resp_sz); | |
6311 | } | |
6312 | ||
6313 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6314 | { | |
6315 | int i; | |
6316 | ||
6317 | if (!pages) | |
6318 | return; | |
6319 | ||
6320 | for (i = 0; i < size; i++) { | |
6321 | if (!pages[i]) | |
6322 | break; | |
6323 | __free_page(pages[i]); | |
6324 | } | |
6325 | kfree(pages); | |
6326 | } | |
6327 | ||
6328 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6329 | { | |
6330 | struct page **pages; | |
6331 | int i; | |
6332 | ||
6333 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6334 | if (!pages) { | |
6335 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6336 | return NULL; | |
6337 | } | |
6338 | ||
6339 | for (i = 0; i < size; i++) { | |
6340 | pages[i] = alloc_page(gfp_flags); | |
6341 | if (!pages[i]) { | |
6342 | dprintk("%s: failed to allocate page\n", __func__); | |
6343 | nfs4_free_pages(pages, size); | |
6344 | return NULL; | |
6345 | } | |
6346 | } | |
6347 | ||
6348 | return pages; | |
6349 | } | |
6350 | ||
b1f69b75 AA |
6351 | static void nfs4_layoutget_release(void *calldata) |
6352 | { | |
6353 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6354 | struct inode *inode = lgp->args.inode; |
6355 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6356 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6357 | |
6358 | dprintk("--> %s\n", __func__); | |
8554116e | 6359 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6360 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6361 | put_nfs_open_context(lgp->args.ctx); |
6362 | kfree(calldata); | |
6363 | dprintk("<-- %s\n", __func__); | |
6364 | } | |
6365 | ||
6366 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6367 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6368 | .rpc_call_done = nfs4_layoutget_done, | |
6369 | .rpc_release = nfs4_layoutget_release, | |
6370 | }; | |
6371 | ||
a0b0a6e3 TM |
6372 | struct pnfs_layout_segment * |
6373 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6374 | { |
a47970ff WAA |
6375 | struct inode *inode = lgp->args.inode; |
6376 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6377 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6378 | struct rpc_task *task; |
6379 | struct rpc_message msg = { | |
6380 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6381 | .rpc_argp = &lgp->args, | |
6382 | .rpc_resp = &lgp->res, | |
6ab59344 | 6383 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
6384 | }; |
6385 | struct rpc_task_setup task_setup_data = { | |
6386 | .rpc_client = server->client, | |
6387 | .rpc_message = &msg, | |
6388 | .callback_ops = &nfs4_layoutget_call_ops, | |
6389 | .callback_data = lgp, | |
6390 | .flags = RPC_TASK_ASYNC, | |
6391 | }; | |
a0b0a6e3 | 6392 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6393 | int status = 0; |
6394 | ||
6395 | dprintk("--> %s\n", __func__); | |
6396 | ||
8554116e IK |
6397 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6398 | if (!lgp->args.layout.pages) { | |
6399 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6400 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6401 | } |
6402 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6403 | lgp->args.timestamp = jiffies; |
8554116e | 6404 | |
35124a09 | 6405 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6406 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6407 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6408 | |
6409 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6410 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6411 | ||
b1f69b75 AA |
6412 | task = rpc_run_task(&task_setup_data); |
6413 | if (IS_ERR(task)) | |
a0b0a6e3 | 6414 | return ERR_CAST(task); |
b1f69b75 | 6415 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6416 | if (status == 0) |
6417 | status = task->tk_status; | |
085b7a45 WAA |
6418 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6419 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6420 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6421 | rpc_put_task(task); |
6422 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6423 | if (status) |
6424 | return ERR_PTR(status); | |
6425 | return lseg; | |
b1f69b75 AA |
6426 | } |
6427 | ||
cbe82603 BH |
6428 | static void |
6429 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6430 | { | |
6431 | struct nfs4_layoutreturn *lrp = calldata; | |
6432 | ||
6433 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6434 | nfs41_setup_sequence(lrp->clp->cl_session, |
6435 | &lrp->args.seq_args, | |
6436 | &lrp->res.seq_res, | |
6437 | task); | |
cbe82603 BH |
6438 | } |
6439 | ||
6440 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6441 | { | |
6442 | struct nfs4_layoutreturn *lrp = calldata; | |
6443 | struct nfs_server *server; | |
6444 | ||
6445 | dprintk("--> %s\n", __func__); | |
6446 | ||
6ba7db34 | 6447 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6448 | return; |
6449 | ||
6450 | server = NFS_SERVER(lrp->args.inode); | |
6451 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6452 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6453 | return; |
6454 | } | |
cbe82603 BH |
6455 | dprintk("<-- %s\n", __func__); |
6456 | } | |
6457 | ||
6458 | static void nfs4_layoutreturn_release(void *calldata) | |
6459 | { | |
6460 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6461 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6462 | |
6463 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6464 | spin_lock(&lo->plh_inode->i_lock); |
6465 | if (lrp->res.lrs_present) | |
6466 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6467 | lo->plh_block_lgets--; | |
6468 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6469 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6470 | kfree(calldata); |
6471 | dprintk("<-- %s\n", __func__); | |
6472 | } | |
6473 | ||
6474 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6475 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6476 | .rpc_call_done = nfs4_layoutreturn_done, | |
6477 | .rpc_release = nfs4_layoutreturn_release, | |
6478 | }; | |
6479 | ||
6480 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6481 | { | |
6482 | struct rpc_task *task; | |
6483 | struct rpc_message msg = { | |
6484 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6485 | .rpc_argp = &lrp->args, | |
6486 | .rpc_resp = &lrp->res, | |
9556000d | 6487 | .rpc_cred = lrp->cred, |
cbe82603 BH |
6488 | }; |
6489 | struct rpc_task_setup task_setup_data = { | |
6490 | .rpc_client = lrp->clp->cl_rpcclient, | |
6491 | .rpc_message = &msg, | |
6492 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6493 | .callback_data = lrp, | |
6494 | }; | |
6495 | int status; | |
6496 | ||
6497 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6498 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6499 | task = rpc_run_task(&task_setup_data); |
6500 | if (IS_ERR(task)) | |
6501 | return PTR_ERR(task); | |
6502 | status = task->tk_status; | |
6503 | dprintk("<-- %s status=%d\n", __func__, status); | |
6504 | rpc_put_task(task); | |
6505 | return status; | |
6506 | } | |
6507 | ||
7f11d8d3 AA |
6508 | /* |
6509 | * Retrieve the list of Data Server devices from the MDS. | |
6510 | */ | |
6511 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6512 | const struct nfs_fh *fh, | |
6513 | struct pnfs_devicelist *devlist) | |
6514 | { | |
6515 | struct nfs4_getdevicelist_args args = { | |
6516 | .fh = fh, | |
6517 | .layoutclass = server->pnfs_curr_ld->id, | |
6518 | }; | |
6519 | struct nfs4_getdevicelist_res res = { | |
6520 | .devlist = devlist, | |
6521 | }; | |
6522 | struct rpc_message msg = { | |
6523 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6524 | .rpc_argp = &args, | |
6525 | .rpc_resp = &res, | |
6526 | }; | |
6527 | int status; | |
6528 | ||
6529 | dprintk("--> %s\n", __func__); | |
6530 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6531 | &res.seq_res, 0); | |
6532 | dprintk("<-- %s status=%d\n", __func__, status); | |
6533 | return status; | |
6534 | } | |
6535 | ||
6536 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6537 | const struct nfs_fh *fh, | |
6538 | struct pnfs_devicelist *devlist) | |
6539 | { | |
6540 | struct nfs4_exception exception = { }; | |
6541 | int err; | |
6542 | ||
6543 | do { | |
6544 | err = nfs4_handle_exception(server, | |
6545 | _nfs4_getdevicelist(server, fh, devlist), | |
6546 | &exception); | |
6547 | } while (exception.retry); | |
6548 | ||
6549 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6550 | err, devlist->num_devs); | |
6551 | ||
6552 | return err; | |
6553 | } | |
6554 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6555 | ||
b1f69b75 | 6556 | static int |
cd5875fe TM |
6557 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
6558 | struct pnfs_device *pdev, | |
6559 | struct rpc_cred *cred) | |
b1f69b75 AA |
6560 | { |
6561 | struct nfs4_getdeviceinfo_args args = { | |
6562 | .pdev = pdev, | |
6563 | }; | |
6564 | struct nfs4_getdeviceinfo_res res = { | |
6565 | .pdev = pdev, | |
6566 | }; | |
6567 | struct rpc_message msg = { | |
6568 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6569 | .rpc_argp = &args, | |
6570 | .rpc_resp = &res, | |
cd5875fe | 6571 | .rpc_cred = cred, |
b1f69b75 AA |
6572 | }; |
6573 | int status; | |
6574 | ||
6575 | dprintk("--> %s\n", __func__); | |
7c513058 | 6576 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6577 | dprintk("<-- %s status=%d\n", __func__, status); |
6578 | ||
6579 | return status; | |
6580 | } | |
6581 | ||
cd5875fe TM |
6582 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
6583 | struct pnfs_device *pdev, | |
6584 | struct rpc_cred *cred) | |
b1f69b75 AA |
6585 | { |
6586 | struct nfs4_exception exception = { }; | |
6587 | int err; | |
6588 | ||
6589 | do { | |
6590 | err = nfs4_handle_exception(server, | |
cd5875fe | 6591 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
6592 | &exception); |
6593 | } while (exception.retry); | |
6594 | return err; | |
6595 | } | |
6596 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6597 | ||
863a3c6c AA |
6598 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6599 | { | |
6600 | struct nfs4_layoutcommit_data *data = calldata; | |
6601 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6602 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6603 | |
d9afbd1b TM |
6604 | nfs41_setup_sequence(session, |
6605 | &data->args.seq_args, | |
6606 | &data->res.seq_res, | |
6607 | task); | |
863a3c6c AA |
6608 | } |
6609 | ||
6610 | static void | |
6611 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6612 | { | |
6613 | struct nfs4_layoutcommit_data *data = calldata; | |
6614 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6615 | ||
6ba7db34 | 6616 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6617 | return; |
6618 | ||
6619 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6620 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6621 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6622 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6623 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6624 | task->tk_status = 0; |
e59d27e0 TM |
6625 | break; |
6626 | case 0: | |
863a3c6c AA |
6627 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6628 | data->res.fattr); | |
e59d27e0 TM |
6629 | break; |
6630 | default: | |
6631 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6632 | rpc_restart_call_prepare(task); | |
6633 | return; | |
6634 | } | |
6635 | } | |
863a3c6c AA |
6636 | } |
6637 | ||
6638 | static void nfs4_layoutcommit_release(void *calldata) | |
6639 | { | |
6640 | struct nfs4_layoutcommit_data *data = calldata; | |
6641 | ||
db29c089 | 6642 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6643 | put_rpccred(data->cred); |
6644 | kfree(data); | |
6645 | } | |
6646 | ||
6647 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6648 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6649 | .rpc_call_done = nfs4_layoutcommit_done, | |
6650 | .rpc_release = nfs4_layoutcommit_release, | |
6651 | }; | |
6652 | ||
6653 | int | |
ef311537 | 6654 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6655 | { |
6656 | struct rpc_message msg = { | |
6657 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6658 | .rpc_argp = &data->args, | |
6659 | .rpc_resp = &data->res, | |
6660 | .rpc_cred = data->cred, | |
6661 | }; | |
6662 | struct rpc_task_setup task_setup_data = { | |
6663 | .task = &data->task, | |
6664 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6665 | .rpc_message = &msg, | |
6666 | .callback_ops = &nfs4_layoutcommit_ops, | |
6667 | .callback_data = data, | |
6668 | .flags = RPC_TASK_ASYNC, | |
6669 | }; | |
6670 | struct rpc_task *task; | |
6671 | int status = 0; | |
6672 | ||
6673 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6674 | "lbw: %llu inode %lu\n", | |
6675 | data->task.tk_pid, sync, | |
6676 | data->args.lastbytewritten, | |
6677 | data->args.inode->i_ino); | |
6678 | ||
9d12b216 | 6679 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6680 | task = rpc_run_task(&task_setup_data); |
6681 | if (IS_ERR(task)) | |
6682 | return PTR_ERR(task); | |
ef311537 | 6683 | if (sync == false) |
863a3c6c AA |
6684 | goto out; |
6685 | status = nfs4_wait_for_completion_rpc_task(task); | |
6686 | if (status != 0) | |
6687 | goto out; | |
6688 | status = task->tk_status; | |
6689 | out: | |
6690 | dprintk("%s: status %d\n", __func__, status); | |
6691 | rpc_put_task(task); | |
6692 | return status; | |
6693 | } | |
fca78d6d BS |
6694 | |
6695 | static int | |
6696 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6697 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6698 | { | |
6699 | struct nfs41_secinfo_no_name_args args = { | |
6700 | .style = SECINFO_STYLE_CURRENT_FH, | |
6701 | }; | |
6702 | struct nfs4_secinfo_res res = { | |
6703 | .flavors = flavors, | |
6704 | }; | |
6705 | struct rpc_message msg = { | |
6706 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6707 | .rpc_argp = &args, | |
6708 | .rpc_resp = &res, | |
6709 | }; | |
6710 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6711 | } | |
6712 | ||
6713 | static int | |
6714 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6715 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6716 | { | |
6717 | struct nfs4_exception exception = { }; | |
6718 | int err; | |
6719 | do { | |
6720 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6721 | switch (err) { | |
6722 | case 0: | |
6723 | case -NFS4ERR_WRONGSEC: | |
6724 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6725 | goto out; |
fca78d6d BS |
6726 | default: |
6727 | err = nfs4_handle_exception(server, err, &exception); | |
6728 | } | |
6729 | } while (exception.retry); | |
05e9cfb4 | 6730 | out: |
fca78d6d BS |
6731 | return err; |
6732 | } | |
6733 | ||
6734 | static int | |
6735 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6736 | struct nfs_fsinfo *info) | |
6737 | { | |
6738 | int err; | |
6739 | struct page *page; | |
6740 | rpc_authflavor_t flavor; | |
6741 | struct nfs4_secinfo_flavors *flavors; | |
6742 | ||
6743 | page = alloc_page(GFP_KERNEL); | |
6744 | if (!page) { | |
6745 | err = -ENOMEM; | |
6746 | goto out; | |
6747 | } | |
6748 | ||
6749 | flavors = page_address(page); | |
6750 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6751 | ||
6752 | /* | |
6753 | * Fall back on "guess and check" method if | |
6754 | * the server doesn't support SECINFO_NO_NAME | |
6755 | */ | |
6756 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6757 | err = nfs4_find_root_sec(server, fhandle, info); | |
6758 | goto out_freepage; | |
6759 | } | |
6760 | if (err) | |
6761 | goto out_freepage; | |
6762 | ||
6763 | flavor = nfs_find_best_sec(flavors); | |
6764 | if (err == 0) | |
6765 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6766 | ||
6767 | out_freepage: | |
6768 | put_page(page); | |
6769 | if (err == -EACCES) | |
6770 | return -EPERM; | |
6771 | out: | |
6772 | return err; | |
6773 | } | |
1cab0652 | 6774 | |
ab7cb0df TM |
6775 | static int _nfs41_test_stateid(struct nfs_server *server, |
6776 | nfs4_stateid *stateid, | |
6777 | struct rpc_cred *cred) | |
7d974794 BS |
6778 | { |
6779 | int status; | |
6780 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6781 | .stateid = stateid, |
7d974794 BS |
6782 | }; |
6783 | struct nfs41_test_stateid_res res; | |
6784 | struct rpc_message msg = { | |
6785 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6786 | .rpc_argp = &args, | |
6787 | .rpc_resp = &res, | |
ab7cb0df | 6788 | .rpc_cred = cred, |
7d974794 | 6789 | }; |
1cab0652 | 6790 | |
38527b15 | 6791 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6792 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6793 | nfs4_set_sequence_privileged(&args.seq_args); |
6794 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6795 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6796 | if (status != NFS_OK) { |
6797 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6798 | return status; |
38527b15 CL |
6799 | } |
6800 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6801 | return -res.status; |
7d974794 BS |
6802 | } |
6803 | ||
38527b15 CL |
6804 | /** |
6805 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6806 | * | |
6807 | * @server: server / transport on which to perform the operation | |
6808 | * @stateid: state ID to test | |
ab7cb0df | 6809 | * @cred: credential |
38527b15 CL |
6810 | * |
6811 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6812 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6813 | * failed or the state ID is not currently valid. | |
6814 | */ | |
ab7cb0df TM |
6815 | static int nfs41_test_stateid(struct nfs_server *server, |
6816 | nfs4_stateid *stateid, | |
6817 | struct rpc_cred *cred) | |
7d974794 BS |
6818 | { |
6819 | struct nfs4_exception exception = { }; | |
6820 | int err; | |
6821 | do { | |
ab7cb0df | 6822 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
6823 | if (err != -NFS4ERR_DELAY) |
6824 | break; | |
6825 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6826 | } while (exception.retry); |
6827 | return err; | |
6828 | } | |
9aeda35f | 6829 | |
7c1d5fae TM |
6830 | struct nfs_free_stateid_data { |
6831 | struct nfs_server *server; | |
6832 | struct nfs41_free_stateid_args args; | |
9aeda35f | 6833 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
6834 | }; |
6835 | ||
6836 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
6837 | { | |
6838 | struct nfs_free_stateid_data *data = calldata; | |
6839 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
6840 | &data->args.seq_args, | |
6841 | &data->res.seq_res, | |
6842 | task); | |
6843 | } | |
6844 | ||
6845 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
6846 | { | |
6847 | struct nfs_free_stateid_data *data = calldata; | |
6848 | ||
6849 | nfs41_sequence_done(task, &data->res.seq_res); | |
6850 | ||
6851 | switch (task->tk_status) { | |
6852 | case -NFS4ERR_DELAY: | |
6853 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
6854 | rpc_restart_call_prepare(task); | |
6855 | } | |
6856 | } | |
6857 | ||
6858 | static void nfs41_free_stateid_release(void *calldata) | |
6859 | { | |
6860 | kfree(calldata); | |
6861 | } | |
6862 | ||
6863 | const struct rpc_call_ops nfs41_free_stateid_ops = { | |
6864 | .rpc_call_prepare = nfs41_free_stateid_prepare, | |
6865 | .rpc_call_done = nfs41_free_stateid_done, | |
6866 | .rpc_release = nfs41_free_stateid_release, | |
6867 | }; | |
6868 | ||
6869 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
6870 | nfs4_stateid *stateid, | |
ab7cb0df | 6871 | struct rpc_cred *cred, |
7c1d5fae TM |
6872 | bool privileged) |
6873 | { | |
9aeda35f BS |
6874 | struct rpc_message msg = { |
6875 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 6876 | .rpc_cred = cred, |
9aeda35f | 6877 | }; |
7c1d5fae TM |
6878 | struct rpc_task_setup task_setup = { |
6879 | .rpc_client = server->client, | |
6880 | .rpc_message = &msg, | |
6881 | .callback_ops = &nfs41_free_stateid_ops, | |
6882 | .flags = RPC_TASK_ASYNC, | |
6883 | }; | |
6884 | struct nfs_free_stateid_data *data; | |
9aeda35f | 6885 | |
38527b15 | 6886 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
6887 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6888 | if (!data) | |
6889 | return ERR_PTR(-ENOMEM); | |
6890 | data->server = server; | |
6891 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
6892 | ||
6893 | task_setup.callback_data = data; | |
6894 | ||
6895 | msg.rpc_argp = &data->args; | |
6896 | msg.rpc_resp = &data->res; | |
6897 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
6898 | if (privileged) | |
6899 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
6900 | ||
6901 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
6902 | } |
6903 | ||
38527b15 CL |
6904 | /** |
6905 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6906 | * | |
6907 | * @server: server / transport on which to perform the operation | |
6908 | * @stateid: state ID to release | |
ab7cb0df | 6909 | * @cred: credential |
38527b15 CL |
6910 | * |
6911 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6912 | * negative NFS4ERR value is returned. | |
6913 | */ | |
ab7cb0df TM |
6914 | static int nfs41_free_stateid(struct nfs_server *server, |
6915 | nfs4_stateid *stateid, | |
6916 | struct rpc_cred *cred) | |
9aeda35f | 6917 | { |
7c1d5fae TM |
6918 | struct rpc_task *task; |
6919 | int ret; | |
6920 | ||
ab7cb0df | 6921 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
6922 | if (IS_ERR(task)) |
6923 | return PTR_ERR(task); | |
6924 | ret = rpc_wait_for_completion_task(task); | |
6925 | if (!ret) | |
6926 | ret = task->tk_status; | |
6927 | rpc_put_task(task); | |
6928 | return ret; | |
9aeda35f | 6929 | } |
36281caa | 6930 | |
c8b2d0bf TM |
6931 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
6932 | { | |
6933 | struct rpc_task *task; | |
ab7cb0df | 6934 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 6935 | |
ab7cb0df | 6936 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
6937 | nfs4_free_lock_state(server, lsp); |
6938 | if (IS_ERR(task)) | |
6939 | return PTR_ERR(task); | |
6940 | rpc_put_task(task); | |
6941 | return 0; | |
6942 | } | |
6943 | ||
36281caa TM |
6944 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
6945 | const nfs4_stateid *s2) | |
6946 | { | |
2d2f24ad | 6947 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6948 | return false; |
6949 | ||
2d2f24ad | 6950 | if (s1->seqid == s2->seqid) |
36281caa | 6951 | return true; |
2d2f24ad | 6952 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6953 | return true; |
6954 | ||
6955 | return false; | |
6956 | } | |
6957 | ||
557134a3 AA |
6958 | #endif /* CONFIG_NFS_V4_1 */ |
6959 | ||
36281caa TM |
6960 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6961 | const nfs4_stateid *s2) | |
6962 | { | |
f597c537 | 6963 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6964 | } |
6965 | ||
6966 | ||
17280175 | 6967 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6968 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6969 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6970 | .recover_open = nfs4_open_reclaim, |
6971 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6972 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6973 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6974 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6975 | }; |
6976 | ||
591d71cb | 6977 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6978 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6979 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6980 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6981 | .recover_open = nfs4_open_reclaim, | |
6982 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6983 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6984 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6985 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6986 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6987 | }; |
6988 | #endif /* CONFIG_NFS_V4_1 */ | |
6989 | ||
17280175 | 6990 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6991 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6992 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6993 | .recover_open = nfs4_open_expired, | |
6994 | .recover_lock = nfs4_lock_expired, | |
6995 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6996 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6997 | }; |
6998 | ||
6999 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7000 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7001 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7002 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7003 | .recover_open = nfs41_open_expired, |
7004 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7005 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7006 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 7007 | }; |
591d71cb | 7008 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7009 | |
17280175 | 7010 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7011 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7012 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7013 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7014 | }; |
7015 | ||
7016 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7017 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7018 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7019 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7020 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7021 | }; |
7022 | #endif | |
7023 | ||
97dc1359 TM |
7024 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7025 | .minor_version = 0, | |
39c6daae TM |
7026 | .init_caps = NFS_CAP_READDIRPLUS |
7027 | | NFS_CAP_ATOMIC_OPEN | |
7028 | | NFS_CAP_CHANGE_ATTR | |
7029 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 7030 | .call_sync = _nfs4_call_sync, |
36281caa | 7031 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7032 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7033 | .free_lock_state = nfs4_release_lockowner, |
c48f4f35 TM |
7034 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7035 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7036 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7037 | }; |
7038 | ||
7039 | #if defined(CONFIG_NFS_V4_1) | |
7040 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7041 | .minor_version = 1, | |
39c6daae TM |
7042 | .init_caps = NFS_CAP_READDIRPLUS |
7043 | | NFS_CAP_ATOMIC_OPEN | |
7044 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7045 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7046 | | NFS_CAP_STATEID_NFSV41 |
7047 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 7048 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 7049 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7050 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7051 | .free_lock_state = nfs41_free_lock_state, |
c48f4f35 TM |
7052 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7053 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7054 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7055 | }; |
7056 | #endif | |
7057 | ||
97dc1359 TM |
7058 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7059 | [0] = &nfs_v4_0_minor_ops, | |
7060 | #if defined(CONFIG_NFS_V4_1) | |
7061 | [1] = &nfs_v4_1_minor_ops, | |
7062 | #endif | |
7063 | }; | |
7064 | ||
73a79706 BS |
7065 | const struct inode_operations nfs4_dir_inode_operations = { |
7066 | .create = nfs_create, | |
7067 | .lookup = nfs_lookup, | |
7068 | .atomic_open = nfs_atomic_open, | |
7069 | .link = nfs_link, | |
7070 | .unlink = nfs_unlink, | |
7071 | .symlink = nfs_symlink, | |
7072 | .mkdir = nfs_mkdir, | |
7073 | .rmdir = nfs_rmdir, | |
7074 | .mknod = nfs_mknod, | |
7075 | .rename = nfs_rename, | |
7076 | .permission = nfs_permission, | |
7077 | .getattr = nfs_getattr, | |
7078 | .setattr = nfs_setattr, | |
7079 | .getxattr = generic_getxattr, | |
7080 | .setxattr = generic_setxattr, | |
7081 | .listxattr = generic_listxattr, | |
7082 | .removexattr = generic_removexattr, | |
7083 | }; | |
7084 | ||
92e1d5be | 7085 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7086 | .permission = nfs_permission, |
7087 | .getattr = nfs_getattr, | |
7088 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7089 | .getxattr = generic_getxattr, |
7090 | .setxattr = generic_setxattr, | |
7091 | .listxattr = generic_listxattr, | |
7092 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7093 | }; |
7094 | ||
509de811 | 7095 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7096 | .version = 4, /* protocol version */ |
7097 | .dentry_ops = &nfs4_dentry_operations, | |
7098 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7099 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7100 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7101 | .getroot = nfs4_proc_get_root, |
281cad46 | 7102 | .submount = nfs4_submount, |
ff9099f2 | 7103 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7104 | .getattr = nfs4_proc_getattr, |
7105 | .setattr = nfs4_proc_setattr, | |
7106 | .lookup = nfs4_proc_lookup, | |
7107 | .access = nfs4_proc_access, | |
7108 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7109 | .create = nfs4_proc_create, |
7110 | .remove = nfs4_proc_remove, | |
7111 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7112 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7113 | .unlink_done = nfs4_proc_unlink_done, |
7114 | .rename = nfs4_proc_rename, | |
d3d4152a | 7115 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7116 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7117 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7118 | .link = nfs4_proc_link, |
7119 | .symlink = nfs4_proc_symlink, | |
7120 | .mkdir = nfs4_proc_mkdir, | |
7121 | .rmdir = nfs4_proc_remove, | |
7122 | .readdir = nfs4_proc_readdir, | |
7123 | .mknod = nfs4_proc_mknod, | |
7124 | .statfs = nfs4_proc_statfs, | |
7125 | .fsinfo = nfs4_proc_fsinfo, | |
7126 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7127 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7128 | .decode_dirent = nfs4_decode_dirent, |
7129 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7130 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7131 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7132 | .read_done = nfs4_read_done, |
1da177e4 | 7133 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7134 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7135 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7136 | .write_done = nfs4_write_done, |
1da177e4 | 7137 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7138 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7139 | .commit_done = nfs4_commit_done, |
1da177e4 | 7140 | .lock = nfs4_proc_lock, |
e50a1c2e | 7141 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7142 | .close_context = nfs4_close_context, |
2b484297 | 7143 | .open_context = nfs4_atomic_open, |
011e2a7f | 7144 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7145 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7146 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7147 | .init_client = nfs4_init_client, |
cdb7eced | 7148 | .free_client = nfs4_free_client, |
1179acc6 BS |
7149 | .create_server = nfs4_create_server, |
7150 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7151 | }; |
7152 | ||
64c2ce8b AK |
7153 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7154 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7155 | .list = nfs4_xattr_list_nfs4_acl, | |
7156 | .get = nfs4_xattr_get_nfs4_acl, | |
7157 | .set = nfs4_xattr_set_nfs4_acl, | |
7158 | }; | |
7159 | ||
7160 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7161 | &nfs4_xattr_nfs4_acl_handler, | |
7162 | NULL | |
7163 | }; | |
7164 | ||
1da177e4 LT |
7165 | /* |
7166 | * Local variables: | |
7167 | * c-basic-offset: 8 | |
7168 | * End: | |
7169 | */ |