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); |
1775fd3e DQ |
80 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
81 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
82 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
83 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
84 | struct nfs4_state *state, struct nfs4_label *ilabel, |
85 | struct nfs4_label *olabel); | |
f062eb6c | 86 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
87 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
88 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 89 | #endif |
1da177e4 | 90 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 91 | static int nfs4_map_errors(int err) |
1da177e4 | 92 | { |
52567b03 TM |
93 | if (err >= -1000) |
94 | return err; | |
95 | switch (err) { | |
96 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
97 | case -NFS4ERR_LAYOUTTRYLATER: |
98 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 99 | return -EREMOTEIO; |
7ebb9315 BS |
100 | case -NFS4ERR_WRONGSEC: |
101 | return -EPERM; | |
3ddeb7c5 TM |
102 | case -NFS4ERR_BADOWNER: |
103 | case -NFS4ERR_BADNAME: | |
104 | return -EINVAL; | |
fb13bfa7 TM |
105 | case -NFS4ERR_SHARE_DENIED: |
106 | return -EACCES; | |
f25efd85 SD |
107 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
108 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
109 | case -NFS4ERR_ACCESS: |
110 | return -EACCES; | |
6e3cf241 TM |
111 | case -NFS4ERR_FILE_OPEN: |
112 | return -EBUSY; | |
52567b03 | 113 | default: |
1da177e4 | 114 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 115 | __func__, -err); |
52567b03 | 116 | break; |
1da177e4 | 117 | } |
52567b03 | 118 | return -EIO; |
1da177e4 LT |
119 | } |
120 | ||
121 | /* | |
122 | * This is our standard bitmap for GETATTR requests. | |
123 | */ | |
1549210f | 124 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
125 | FATTR4_WORD0_TYPE |
126 | | FATTR4_WORD0_CHANGE | |
127 | | FATTR4_WORD0_SIZE | |
128 | | FATTR4_WORD0_FSID | |
129 | | FATTR4_WORD0_FILEID, | |
130 | FATTR4_WORD1_MODE | |
131 | | FATTR4_WORD1_NUMLINKS | |
132 | | FATTR4_WORD1_OWNER | |
133 | | FATTR4_WORD1_OWNER_GROUP | |
134 | | FATTR4_WORD1_RAWDEV | |
135 | | FATTR4_WORD1_SPACE_USED | |
136 | | FATTR4_WORD1_TIME_ACCESS | |
137 | | FATTR4_WORD1_TIME_METADATA | |
138 | | FATTR4_WORD1_TIME_MODIFY | |
139 | }; | |
140 | ||
1549210f TM |
141 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
142 | FATTR4_WORD0_TYPE | |
143 | | FATTR4_WORD0_CHANGE | |
144 | | FATTR4_WORD0_SIZE | |
145 | | FATTR4_WORD0_FSID | |
146 | | FATTR4_WORD0_FILEID, | |
147 | FATTR4_WORD1_MODE | |
148 | | FATTR4_WORD1_NUMLINKS | |
149 | | FATTR4_WORD1_OWNER | |
150 | | FATTR4_WORD1_OWNER_GROUP | |
151 | | FATTR4_WORD1_RAWDEV | |
152 | | FATTR4_WORD1_SPACE_USED | |
153 | | FATTR4_WORD1_TIME_ACCESS | |
154 | | FATTR4_WORD1_TIME_METADATA | |
155 | | FATTR4_WORD1_TIME_MODIFY, | |
156 | FATTR4_WORD2_MDSTHRESHOLD | |
157 | }; | |
158 | ||
e23008ec AA |
159 | static const u32 nfs4_open_noattr_bitmap[3] = { |
160 | FATTR4_WORD0_TYPE | |
161 | | FATTR4_WORD0_CHANGE | |
162 | | FATTR4_WORD0_FILEID, | |
163 | }; | |
164 | ||
a09df2ca | 165 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
166 | FATTR4_WORD0_FILES_AVAIL |
167 | | FATTR4_WORD0_FILES_FREE | |
168 | | FATTR4_WORD0_FILES_TOTAL, | |
169 | FATTR4_WORD1_SPACE_AVAIL | |
170 | | FATTR4_WORD1_SPACE_FREE | |
171 | | FATTR4_WORD1_SPACE_TOTAL | |
172 | }; | |
173 | ||
a09df2ca | 174 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
175 | FATTR4_WORD0_MAXLINK |
176 | | FATTR4_WORD0_MAXNAME, | |
177 | 0 | |
178 | }; | |
179 | ||
dae100c2 | 180 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
181 | | FATTR4_WORD0_MAXREAD |
182 | | FATTR4_WORD0_MAXWRITE | |
183 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 184 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
185 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
186 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
187 | }; |
188 | ||
a09df2ca | 189 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
190 | FATTR4_WORD0_TYPE |
191 | | FATTR4_WORD0_CHANGE | |
192 | | FATTR4_WORD0_SIZE | |
193 | | FATTR4_WORD0_FSID | |
194 | | FATTR4_WORD0_FILEID | |
195 | | FATTR4_WORD0_FS_LOCATIONS, | |
196 | FATTR4_WORD1_MODE | |
197 | | FATTR4_WORD1_NUMLINKS | |
198 | | FATTR4_WORD1_OWNER | |
199 | | FATTR4_WORD1_OWNER_GROUP | |
200 | | FATTR4_WORD1_RAWDEV | |
201 | | FATTR4_WORD1_SPACE_USED | |
202 | | FATTR4_WORD1_TIME_ACCESS | |
203 | | FATTR4_WORD1_TIME_METADATA | |
204 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 205 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
206 | }; |
207 | ||
bc4785cd | 208 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
209 | struct nfs4_readdir_arg *readdir) |
210 | { | |
0dbb4c67 | 211 | __be32 *start, *p; |
1da177e4 | 212 | |
1da177e4 | 213 | if (cookie > 2) { |
b7ef1956 | 214 | readdir->cookie = cookie; |
1da177e4 LT |
215 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
216 | return; | |
217 | } | |
218 | ||
219 | readdir->cookie = 0; | |
220 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
221 | if (cookie == 2) | |
222 | return; | |
223 | ||
224 | /* | |
225 | * NFSv4 servers do not return entries for '.' and '..' | |
226 | * Therefore, we fake these entries here. We let '.' | |
227 | * have cookie 0 and '..' have cookie 1. Note that | |
228 | * when talking to the server, we always send cookie 0 | |
229 | * instead of 1 or 2. | |
230 | */ | |
2b86ce2d | 231 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
232 | |
233 | if (cookie == 0) { | |
234 | *p++ = xdr_one; /* next */ | |
235 | *p++ = xdr_zero; /* cookie, first word */ | |
236 | *p++ = xdr_one; /* cookie, second word */ | |
237 | *p++ = xdr_one; /* entry len */ | |
238 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
239 | p++; | |
240 | *p++ = xdr_one; /* bitmap length */ | |
241 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
242 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 243 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
244 | } |
245 | ||
246 | *p++ = xdr_one; /* next */ | |
247 | *p++ = xdr_zero; /* cookie, first word */ | |
248 | *p++ = xdr_two; /* cookie, second word */ | |
249 | *p++ = xdr_two; /* entry len */ | |
250 | memcpy(p, "..\0\0", 4); /* entry */ | |
251 | p++; | |
252 | *p++ = xdr_one; /* bitmap length */ | |
253 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
254 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 255 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
256 | |
257 | readdir->pgbase = (char *)p - (char *)start; | |
258 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 259 | kunmap_atomic(start); |
1da177e4 LT |
260 | } |
261 | ||
65de872e TM |
262 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
263 | { | |
264 | int res = 0; | |
265 | ||
266 | might_sleep(); | |
267 | ||
268 | if (*timeout <= 0) | |
269 | *timeout = NFS4_POLL_RETRY_MIN; | |
270 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
271 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 272 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
273 | if (fatal_signal_pending(current)) |
274 | res = -ERESTARTSYS; | |
275 | *timeout <<= 1; | |
276 | return res; | |
277 | } | |
278 | ||
279 | /* This is the error handling routine for processes that are allowed | |
280 | * to sleep. | |
281 | */ | |
b064eca2 | 282 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
283 | { |
284 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 285 | struct nfs4_state *state = exception->state; |
3114ea7a | 286 | struct inode *inode = exception->inode; |
65de872e TM |
287 | int ret = errorcode; |
288 | ||
289 | exception->retry = 0; | |
290 | switch(errorcode) { | |
291 | case 0: | |
292 | return 0; | |
3114ea7a | 293 | case -NFS4ERR_OPENMODE: |
011e2a7f | 294 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 295 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
296 | exception->retry = 1; |
297 | return 0; | |
298 | } | |
299 | if (state == NULL) | |
300 | break; | |
5d422301 TM |
301 | ret = nfs4_schedule_stateid_recovery(server, state); |
302 | if (ret < 0) | |
303 | break; | |
3114ea7a | 304 | goto wait_on_recovery; |
a1d0b5ee | 305 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
306 | case -NFS4ERR_ADMIN_REVOKED: |
307 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
308 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
309 | nfs_remove_bad_delegation(inode); | |
310 | exception->retry = 1; | |
311 | break; | |
312 | } | |
9e33bed5 TM |
313 | if (state == NULL) |
314 | break; | |
5d422301 TM |
315 | ret = nfs4_schedule_stateid_recovery(server, state); |
316 | if (ret < 0) | |
317 | break; | |
0400a6b0 | 318 | goto wait_on_recovery; |
0ced63d1 | 319 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
320 | if (state != NULL) { |
321 | ret = nfs4_schedule_stateid_recovery(server, state); | |
322 | if (ret < 0) | |
323 | break; | |
324 | } | |
65de872e | 325 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 326 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
327 | nfs4_schedule_lease_recovery(clp); |
328 | goto wait_on_recovery; | |
03391693 | 329 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
330 | case -NFS4ERR_BADSESSION: |
331 | case -NFS4ERR_BADSLOT: | |
332 | case -NFS4ERR_BAD_HIGH_SLOT: | |
333 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
334 | case -NFS4ERR_DEADSESSION: | |
335 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
336 | case -NFS4ERR_SEQ_MISORDERED: | |
337 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
338 | errorcode); | |
9f594791 | 339 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 340 | goto wait_on_recovery; |
03391693 | 341 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 342 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
343 | if (exception->timeout > HZ) { |
344 | /* We have retried a decent amount, time to | |
345 | * fail | |
346 | */ | |
347 | ret = -EBUSY; | |
348 | break; | |
349 | } | |
65de872e TM |
350 | case -NFS4ERR_GRACE: |
351 | case -NFS4ERR_DELAY: | |
352 | ret = nfs4_delay(server->client, &exception->timeout); | |
353 | if (ret != 0) | |
354 | break; | |
a8a4ae3a | 355 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
356 | case -NFS4ERR_OLD_STATEID: |
357 | exception->retry = 1; | |
b064eca2 TM |
358 | break; |
359 | case -NFS4ERR_BADOWNER: | |
360 | /* The following works around a Linux server bug! */ | |
361 | case -NFS4ERR_BADNAME: | |
362 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
363 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
364 | exception->retry = 1; | |
365 | printk(KERN_WARNING "NFS: v4 server %s " | |
366 | "does not accept raw " | |
367 | "uid/gids. " | |
368 | "Reenabling the idmapper.\n", | |
369 | server->nfs_client->cl_hostname); | |
370 | } | |
65de872e TM |
371 | } |
372 | /* We failed to handle the error */ | |
373 | return nfs4_map_errors(ret); | |
0400a6b0 | 374 | wait_on_recovery: |
a2c0b9e2 TM |
375 | ret = nfs4_wait_clnt_recover(clp); |
376 | if (ret == 0) | |
377 | exception->retry = 1; | |
378 | return ret; | |
65de872e TM |
379 | } |
380 | ||
381 | ||
452e9352 | 382 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 383 | { |
1da177e4 LT |
384 | spin_lock(&clp->cl_lock); |
385 | if (time_before(clp->cl_last_renewal,timestamp)) | |
386 | clp->cl_last_renewal = timestamp; | |
387 | spin_unlock(&clp->cl_lock); | |
388 | } | |
389 | ||
452e9352 TM |
390 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
391 | { | |
392 | do_renew_lease(server->nfs_client, timestamp); | |
393 | } | |
394 | ||
cccef3b9 AA |
395 | #if defined(CONFIG_NFS_V4_1) |
396 | ||
d185a334 | 397 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 398 | { |
e3725ec0 | 399 | struct nfs4_session *session; |
13615871 | 400 | struct nfs4_slot_table *tbl; |
c10e4498 | 401 | bool send_new_highest_used_slotid = false; |
13615871 | 402 | |
dfb4f309 | 403 | if (!res->sr_slot) { |
13615871 AA |
404 | /* just wake up the next guy waiting since |
405 | * we may have not consumed a slot after all */ | |
691daf3b | 406 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 407 | return; |
13615871 | 408 | } |
e3725ec0 TM |
409 | tbl = res->sr_slot->table; |
410 | session = tbl->session; | |
ea028ac9 | 411 | |
35dc1d74 | 412 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
413 | /* Be nice to the server: try to ensure that the last transmitted |
414 | * value for highest_user_slotid <= target_highest_slotid | |
415 | */ | |
416 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
417 | send_new_highest_used_slotid = true; | |
418 | ||
b75ad4cd TM |
419 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
420 | send_new_highest_used_slotid = false; | |
421 | goto out_unlock; | |
422 | } | |
f4af6e2a | 423 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
424 | |
425 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
426 | send_new_highest_used_slotid = false; | |
b75ad4cd | 427 | out_unlock: |
35dc1d74 | 428 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 429 | res->sr_slot = NULL; |
c10e4498 TM |
430 | if (send_new_highest_used_slotid) |
431 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
432 | } |
433 | ||
14516c3a | 434 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 435 | { |
e3725ec0 | 436 | struct nfs4_session *session; |
933602e3 | 437 | struct nfs4_slot *slot; |
14516c3a | 438 | struct nfs_client *clp; |
ac20d163 | 439 | bool interrupted = false; |
85563073 | 440 | int ret = 1; |
b0df806c | 441 | |
468f8613 BS |
442 | /* don't increment the sequence number if the task wasn't sent */ |
443 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
444 | goto out; |
445 | ||
933602e3 | 446 | slot = res->sr_slot; |
e3725ec0 | 447 | session = slot->table->session; |
933602e3 | 448 | |
ac20d163 TM |
449 | if (slot->interrupted) { |
450 | slot->interrupted = 0; | |
451 | interrupted = true; | |
452 | } | |
453 | ||
691daf3b | 454 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
455 | switch (res->sr_status) { |
456 | case 0: | |
b0df806c | 457 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 458 | ++slot->seq_nr; |
e3725ec0 | 459 | clp = session->clp; |
8e63b6a8 | 460 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 461 | /* Check sequence flags */ |
b4410c2f TM |
462 | if (res->sr_status_flags != 0) |
463 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 464 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 465 | break; |
ac20d163 TM |
466 | case 1: |
467 | /* | |
468 | * sr_status remains 1 if an RPC level error occurred. | |
469 | * The server may or may not have processed the sequence | |
470 | * operation.. | |
471 | * Mark the slot as having hosted an interrupted RPC call. | |
472 | */ | |
473 | slot->interrupted = 1; | |
474 | goto out; | |
14516c3a TM |
475 | case -NFS4ERR_DELAY: |
476 | /* The server detected a resend of the RPC call and | |
477 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
478 | * of RFC5661. | |
479 | */ | |
df2fabff | 480 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 481 | __func__, |
df2fabff | 482 | slot->slot_nr, |
933602e3 | 483 | slot->seq_nr); |
14516c3a | 484 | goto out_retry; |
85563073 TM |
485 | case -NFS4ERR_BADSLOT: |
486 | /* | |
487 | * The slot id we used was probably retired. Try again | |
488 | * using a different slot id. | |
489 | */ | |
e8794440 TM |
490 | goto retry_nowait; |
491 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
492 | /* |
493 | * Was the last operation on this sequence interrupted? | |
494 | * If so, retry after bumping the sequence number. | |
495 | */ | |
496 | if (interrupted) { | |
497 | ++slot->seq_nr; | |
498 | goto retry_nowait; | |
499 | } | |
e8794440 TM |
500 | /* |
501 | * Could this slot have been previously retired? | |
502 | * If so, then the server may be expecting seq_nr = 1! | |
503 | */ | |
8e63b6a8 TM |
504 | if (slot->seq_nr != 1) { |
505 | slot->seq_nr = 1; | |
506 | goto retry_nowait; | |
507 | } | |
508 | break; | |
e8794440 TM |
509 | case -NFS4ERR_SEQ_FALSE_RETRY: |
510 | ++slot->seq_nr; | |
511 | goto retry_nowait; | |
14516c3a TM |
512 | default: |
513 | /* Just update the slot sequence no. */ | |
933602e3 | 514 | ++slot->seq_nr; |
b0df806c AA |
515 | } |
516 | out: | |
517 | /* The session may be reset by one of the error handlers. */ | |
518 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 519 | nfs41_sequence_free_slot(res); |
85563073 | 520 | return ret; |
e8794440 TM |
521 | retry_nowait: |
522 | if (rpc_restart_call_prepare(task)) { | |
523 | task->tk_status = 0; | |
524 | ret = 0; | |
525 | } | |
526 | goto out; | |
14516c3a | 527 | out_retry: |
d05dd4e9 | 528 | if (!rpc_restart_call(task)) |
14516c3a TM |
529 | goto out; |
530 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
531 | return 0; | |
b0df806c AA |
532 | } |
533 | ||
14516c3a TM |
534 | static int nfs4_sequence_done(struct rpc_task *task, |
535 | struct nfs4_sequence_res *res) | |
df896455 | 536 | { |
e3725ec0 | 537 | if (res->sr_slot == NULL) |
14516c3a TM |
538 | return 1; |
539 | return nfs41_sequence_done(task, res); | |
df896455 TM |
540 | } |
541 | ||
9d12b216 TM |
542 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
543 | struct nfs4_sequence_res *res, int cache_reply) | |
544 | { | |
2b2fa717 | 545 | args->sa_slot = NULL; |
9d12b216 | 546 | args->sa_cache_this = 0; |
8fe72bac | 547 | args->sa_privileged = 0; |
9d12b216 TM |
548 | if (cache_reply) |
549 | args->sa_cache_this = 1; | |
9d12b216 TM |
550 | res->sr_slot = NULL; |
551 | } | |
552 | ||
8fe72bac TM |
553 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
554 | { | |
555 | args->sa_privileged = 1; | |
556 | } | |
557 | ||
dc70d7b3 | 558 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
559 | struct nfs4_sequence_args *args, |
560 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
561 | struct rpc_task *task) |
562 | { | |
fbcd4abc AA |
563 | struct nfs4_slot *slot; |
564 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
565 | |
566 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 567 | /* slot already allocated? */ |
dfb4f309 | 568 | if (res->sr_slot != NULL) |
d9afbd1b | 569 | goto out_success; |
ce5039c1 | 570 | |
fbcd4abc AA |
571 | tbl = &session->fc_slot_table; |
572 | ||
69d206b5 TM |
573 | task->tk_timeout = 0; |
574 | ||
fbcd4abc | 575 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 576 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
8fe72bac | 577 | !args->sa_privileged) { |
0b1c8fc4 | 578 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 579 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 580 | goto out_sleep; |
689cf5c1 AB |
581 | } |
582 | ||
2dc03b7f | 583 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
584 | if (IS_ERR(slot)) { |
585 | /* If out of memory, try again in 1/4 second */ | |
586 | if (slot == ERR_PTR(-ENOMEM)) | |
587 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 588 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 589 | goto out_sleep; |
fbcd4abc AA |
590 | } |
591 | spin_unlock(&tbl->slot_tbl_lock); | |
592 | ||
2b2fa717 | 593 | args->sa_slot = slot; |
fbcd4abc | 594 | |
2dc03b7f TM |
595 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
596 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 597 | |
dfb4f309 | 598 | res->sr_slot = slot; |
8e63b6a8 | 599 | res->sr_timestamp = jiffies; |
2a6e26cd | 600 | res->sr_status_flags = 0; |
fbcd4abc AA |
601 | /* |
602 | * sr_status is only set in decode_sequence, and so will remain | |
603 | * set to 1 if an rpc level failure occurs. | |
604 | */ | |
605 | res->sr_status = 1; | |
d9afbd1b TM |
606 | out_success: |
607 | rpc_call_start(task); | |
ce5039c1 | 608 | return 0; |
7b939a3f | 609 | out_sleep: |
8fe72bac TM |
610 | /* Privileged tasks are queued with top priority */ |
611 | if (args->sa_privileged) | |
1e1093c7 TM |
612 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
613 | NULL, RPC_PRIORITY_PRIVILEGED); | |
614 | else | |
615 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
616 | spin_unlock(&tbl->slot_tbl_lock); |
617 | return -EAGAIN; | |
ce5039c1 | 618 | } |
dc70d7b3 | 619 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 620 | |
035168ab | 621 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
622 | struct nfs4_sequence_args *args, |
623 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
624 | struct rpc_task *task) |
625 | { | |
035168ab | 626 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
627 | int ret = 0; |
628 | ||
d9afbd1b TM |
629 | if (session == NULL) { |
630 | rpc_call_start(task); | |
035168ab | 631 | goto out; |
d9afbd1b | 632 | } |
035168ab | 633 | |
df2fabff | 634 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 635 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 636 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 637 | |
9d12b216 | 638 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
639 | out: |
640 | dprintk("<-- %s status=%d\n", __func__, ret); | |
641 | return ret; | |
642 | } | |
643 | ||
644 | struct nfs41_call_sync_data { | |
035168ab | 645 | const struct nfs_server *seq_server; |
ce5039c1 AA |
646 | struct nfs4_sequence_args *seq_args; |
647 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
648 | }; |
649 | ||
650 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
651 | { | |
652 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 653 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 654 | |
035168ab TM |
655 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
656 | ||
d9afbd1b | 657 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
658 | } |
659 | ||
69ab40c4 AA |
660 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
661 | { | |
662 | struct nfs41_call_sync_data *data = calldata; | |
663 | ||
14516c3a | 664 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
665 | } |
666 | ||
17280175 | 667 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 668 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 669 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
670 | }; |
671 | ||
7c513058 BS |
672 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
673 | struct nfs_server *server, | |
ce5039c1 AA |
674 | struct rpc_message *msg, |
675 | struct nfs4_sequence_args *args, | |
8fe72bac | 676 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
677 | { |
678 | int ret; | |
679 | struct rpc_task *task; | |
680 | struct nfs41_call_sync_data data = { | |
035168ab | 681 | .seq_server = server, |
ce5039c1 AA |
682 | .seq_args = args, |
683 | .seq_res = res, | |
ce5039c1 AA |
684 | }; |
685 | struct rpc_task_setup task_setup = { | |
7c513058 | 686 | .rpc_client = clnt, |
ce5039c1 AA |
687 | .rpc_message = msg, |
688 | .callback_ops = &nfs41_call_sync_ops, | |
689 | .callback_data = &data | |
690 | }; | |
691 | ||
ce5039c1 AA |
692 | task = rpc_run_task(&task_setup); |
693 | if (IS_ERR(task)) | |
694 | ret = PTR_ERR(task); | |
695 | else { | |
696 | ret = task->tk_status; | |
697 | rpc_put_task(task); | |
698 | } | |
699 | return ret; | |
700 | } | |
701 | ||
df896455 | 702 | #else |
8fe72bac | 703 | static |
9d12b216 TM |
704 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
705 | struct nfs4_sequence_res *res, int cache_reply) | |
706 | { | |
707 | } | |
708 | ||
8fe72bac TM |
709 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
710 | { | |
711 | } | |
712 | ||
713 | ||
14516c3a TM |
714 | static int nfs4_sequence_done(struct rpc_task *task, |
715 | struct nfs4_sequence_res *res) | |
df896455 | 716 | { |
14516c3a | 717 | return 1; |
df896455 | 718 | } |
cccef3b9 AA |
719 | #endif /* CONFIG_NFS_V4_1 */ |
720 | ||
fd0c0953 | 721 | static |
7c513058 BS |
722 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
723 | struct nfs_server *server, | |
cccef3b9 AA |
724 | struct rpc_message *msg, |
725 | struct nfs4_sequence_args *args, | |
fd0c0953 | 726 | struct nfs4_sequence_res *res) |
cccef3b9 | 727 | { |
7c513058 | 728 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
729 | } |
730 | ||
fd0c0953 | 731 | static |
7c513058 BS |
732 | int nfs4_call_sync(struct rpc_clnt *clnt, |
733 | struct nfs_server *server, | |
e73b83f2 BS |
734 | struct rpc_message *msg, |
735 | struct nfs4_sequence_args *args, | |
736 | struct nfs4_sequence_res *res, | |
737 | int cache_reply) | |
738 | { | |
fd0c0953 | 739 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 740 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 741 | args, res); |
e73b83f2 | 742 | } |
cccef3b9 | 743 | |
38478b24 | 744 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 745 | { |
38478b24 | 746 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 747 | |
38478b24 | 748 | spin_lock(&dir->i_lock); |
359d7d1c | 749 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 750 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 751 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 752 | dir->i_version = cinfo->after; |
de242c0b | 753 | nfs_fscache_invalidate(dir); |
38478b24 | 754 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
755 | } |
756 | ||
e56e0b78 | 757 | struct nfs4_opendata { |
c6d00e63 | 758 | struct kref kref; |
e56e0b78 TM |
759 | struct nfs_openargs o_arg; |
760 | struct nfs_openres o_res; | |
cdd4e68b TM |
761 | struct nfs_open_confirmargs c_arg; |
762 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
763 | struct nfs4_string owner_name; |
764 | struct nfs4_string group_name; | |
e56e0b78 | 765 | struct nfs_fattr f_attr; |
1775fd3e | 766 | struct nfs4_label *f_label; |
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; | |
1775fd3e | 812 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
813 | p->o_res.seqid = p->o_arg.seqid; |
814 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 815 | p->o_res.server = p->o_arg.server; |
5f657530 | 816 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 817 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 818 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
819 | } |
820 | ||
82a2c1b7 | 821 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 822 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 823 | const struct iattr *attrs, |
1775fd3e | 824 | struct nfs4_label *label, |
4a1c0893 | 825 | enum open_claim_type4 claim, |
8535b2be | 826 | gfp_t gfp_mask) |
e56e0b78 | 827 | { |
82a2c1b7 | 828 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
829 | struct inode *dir = parent->d_inode; |
830 | struct nfs_server *server = NFS_SERVER(dir); | |
831 | struct nfs4_opendata *p; | |
832 | ||
8535b2be | 833 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
834 | if (p == NULL) |
835 | goto err; | |
8535b2be | 836 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
837 | if (p->o_arg.seqid == NULL) |
838 | goto err_free; | |
82a2c1b7 AV |
839 | nfs_sb_active(dentry->d_sb); |
840 | p->dentry = dget(dentry); | |
e56e0b78 TM |
841 | p->dir = parent; |
842 | p->owner = sp; | |
843 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
844 | p->o_arg.open_flags = flags; |
845 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
846 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
847 | * will return permission denied for all bits until close */ | |
848 | if (!(flags & O_EXCL)) { | |
849 | /* ask server to check for all possible rights as results | |
850 | * are cached */ | |
851 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
852 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 853 | } |
7539bbab | 854 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
855 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
856 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 857 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
858 | p->o_arg.server = server; |
859 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 860 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 861 | p->o_arg.label = label; |
49f9a0fa TM |
862 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
863 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
864 | case NFS4_OPEN_CLAIM_NULL: |
865 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
866 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
867 | p->o_arg.fh = NFS_FH(dir); | |
868 | break; | |
869 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
870 | case NFS4_OPEN_CLAIM_FH: | |
871 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
872 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
873 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
874 | } | |
536e43d1 | 875 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 876 | __be32 verf[2]; |
d77d76ff | 877 | |
e56e0b78 TM |
878 | p->o_arg.u.attrs = &p->attrs; |
879 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
880 | |
881 | verf[0] = jiffies; | |
882 | verf[1] = current->pid; | |
883 | memcpy(p->o_arg.u.verifier.data, verf, | |
884 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 885 | } |
cdd4e68b TM |
886 | p->c_arg.fh = &p->o_res.fh; |
887 | p->c_arg.stateid = &p->o_res.stateid; | |
888 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 889 | nfs4_init_opendata_res(p); |
c6d00e63 | 890 | kref_init(&p->kref); |
e56e0b78 TM |
891 | return p; |
892 | err_free: | |
893 | kfree(p); | |
894 | err: | |
895 | dput(parent); | |
896 | return NULL; | |
897 | } | |
898 | ||
c6d00e63 | 899 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 900 | { |
c6d00e63 TM |
901 | struct nfs4_opendata *p = container_of(kref, |
902 | struct nfs4_opendata, kref); | |
82a2c1b7 | 903 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
904 | |
905 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
906 | if (p->state != NULL) |
907 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
908 | nfs4_put_state_owner(p->owner); |
909 | dput(p->dir); | |
82a2c1b7 AV |
910 | dput(p->dentry); |
911 | nfs_sb_deactive(sb); | |
6926afd1 | 912 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
913 | kfree(p); |
914 | } | |
915 | ||
916 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
917 | { | |
918 | if (p != NULL) | |
919 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
920 | } |
921 | ||
06f814a3 TM |
922 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
923 | { | |
06f814a3 TM |
924 | int ret; |
925 | ||
06f814a3 | 926 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
927 | return ret; |
928 | } | |
929 | ||
dc0b027d | 930 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
931 | { |
932 | int ret = 0; | |
dc0b027d | 933 | |
536e43d1 | 934 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
935 | goto out; |
936 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 937 | case FMODE_READ: |
88069f77 TM |
938 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
939 | && state->n_rdonly != 0; | |
6ee41268 TM |
940 | break; |
941 | case FMODE_WRITE: | |
88069f77 TM |
942 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
943 | && state->n_wronly != 0; | |
6ee41268 TM |
944 | break; |
945 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
946 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
947 | && state->n_rdwr != 0; | |
6ee41268 | 948 | } |
dc0b027d | 949 | out: |
6ee41268 TM |
950 | return ret; |
951 | } | |
952 | ||
dc0b027d | 953 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 954 | { |
652f89f6 TM |
955 | if (delegation == NULL) |
956 | return 0; | |
dc0b027d | 957 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 958 | return 0; |
15c831bf | 959 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 960 | return 0; |
d25be546 TM |
961 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
962 | return 0; | |
b7391f44 | 963 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
964 | return 1; |
965 | } | |
966 | ||
dc0b027d | 967 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 968 | { |
dc0b027d | 969 | switch (fmode) { |
e7616923 TM |
970 | case FMODE_WRITE: |
971 | state->n_wronly++; | |
972 | break; | |
973 | case FMODE_READ: | |
974 | state->n_rdonly++; | |
975 | break; | |
976 | case FMODE_READ|FMODE_WRITE: | |
977 | state->n_rdwr++; | |
978 | } | |
dc0b027d | 979 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
980 | } |
981 | ||
dc0b027d | 982 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
983 | { |
984 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
985 | nfs4_stateid_copy(&state->stateid, stateid); |
986 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 987 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 988 | switch (fmode) { |
003707c7 TM |
989 | case FMODE_READ: |
990 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
991 | break; | |
992 | case FMODE_WRITE: | |
993 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
994 | break; | |
995 | case FMODE_READ|FMODE_WRITE: | |
996 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
997 | } | |
e7616923 TM |
998 | } |
999 | ||
dc0b027d | 1000 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1001 | { |
8bda4e4c | 1002 | write_seqlock(&state->seqlock); |
dc0b027d | 1003 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1004 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1005 | } |
1006 | ||
dc0b027d | 1007 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1008 | { |
8bda4e4c TM |
1009 | /* |
1010 | * Protect the call to nfs4_state_set_mode_locked and | |
1011 | * serialise the stateid update | |
1012 | */ | |
1013 | write_seqlock(&state->seqlock); | |
003707c7 | 1014 | if (deleg_stateid != NULL) { |
f597c537 | 1015 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1016 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1017 | } | |
1018 | if (open_stateid != NULL) | |
dc0b027d | 1019 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1020 | write_sequnlock(&state->seqlock); |
1021 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1022 | update_open_stateflags(state, fmode); |
ec073428 | 1023 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1024 | } |
1025 | ||
dc0b027d | 1026 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1027 | { |
1028 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1029 | struct nfs_delegation *deleg_cur; | |
1030 | int ret = 0; | |
1031 | ||
dc0b027d | 1032 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1033 | |
1034 | rcu_read_lock(); | |
1035 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1036 | if (deleg_cur == NULL) | |
1037 | goto no_delegation; | |
1038 | ||
1039 | spin_lock(&deleg_cur->lock); | |
1040 | if (nfsi->delegation != deleg_cur || | |
d25be546 | 1041 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1042 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1043 | goto no_delegation_unlock; |
1044 | ||
1045 | if (delegation == NULL) | |
1046 | delegation = &deleg_cur->stateid; | |
f597c537 | 1047 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1048 | goto no_delegation_unlock; |
1049 | ||
b7391f44 | 1050 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1051 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1052 | ret = 1; |
1053 | no_delegation_unlock: | |
1054 | spin_unlock(&deleg_cur->lock); | |
1055 | no_delegation: | |
1056 | rcu_read_unlock(); | |
1057 | ||
1058 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1059 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1060 | ret = 1; |
1061 | } | |
1062 | ||
1063 | return ret; | |
1064 | } | |
1065 | ||
1066 | ||
dc0b027d | 1067 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1068 | { |
1069 | struct nfs_delegation *delegation; | |
1070 | ||
1071 | rcu_read_lock(); | |
1072 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1073 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1074 | rcu_read_unlock(); |
1075 | return; | |
1076 | } | |
1077 | rcu_read_unlock(); | |
57ec14c5 | 1078 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1079 | } |
1080 | ||
6ee41268 | 1081 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1082 | { |
1083 | struct nfs4_state *state = opendata->state; | |
1084 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1085 | struct nfs_delegation *delegation; | |
536e43d1 | 1086 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1087 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1088 | nfs4_stateid stateid; |
1089 | int ret = -EAGAIN; | |
1090 | ||
aac00a8d | 1091 | for (;;) { |
dc0b027d | 1092 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1093 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1094 | if (can_open_cached(state, fmode, open_mode)) { |
1095 | update_open_stateflags(state, fmode); | |
6ee41268 | 1096 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1097 | goto out_return_state; |
1098 | } | |
1099 | spin_unlock(&state->owner->so_lock); | |
1100 | } | |
34310430 TM |
1101 | rcu_read_lock(); |
1102 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1103 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1104 | rcu_read_unlock(); |
aac00a8d | 1105 | break; |
34310430 | 1106 | } |
aac00a8d | 1107 | /* Save the delegation */ |
f597c537 | 1108 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1109 | rcu_read_unlock(); |
fa332941 | 1110 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1111 | if (!opendata->is_recover) { |
1112 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1113 | if (ret != 0) | |
1114 | goto out; | |
1115 | } | |
aac00a8d | 1116 | ret = -EAGAIN; |
34310430 TM |
1117 | |
1118 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1119 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1120 | goto out_return_state; |
aac00a8d | 1121 | } |
aac00a8d TM |
1122 | out: |
1123 | return ERR_PTR(ret); | |
1124 | out_return_state: | |
1125 | atomic_inc(&state->count); | |
1126 | return state; | |
1127 | } | |
1128 | ||
e23008ec AA |
1129 | static void |
1130 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1131 | { | |
1132 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1133 | struct nfs_delegation *delegation; | |
1134 | int delegation_flags = 0; | |
1135 | ||
1136 | rcu_read_lock(); | |
1137 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1138 | if (delegation) | |
1139 | delegation_flags = delegation->flags; | |
1140 | rcu_read_unlock(); | |
1141 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1142 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1143 | "returning a delegation for " | |
1144 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1145 | clp->cl_hostname); | |
1146 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1147 | nfs_inode_set_delegation(state->inode, | |
1148 | data->owner->so_cred, | |
1149 | &data->o_res); | |
1150 | else | |
1151 | nfs_inode_reclaim_delegation(state->inode, | |
1152 | data->owner->so_cred, | |
1153 | &data->o_res); | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1158 | * and update the nfs4_state. | |
1159 | */ | |
1160 | static struct nfs4_state * | |
1161 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1162 | { | |
1163 | struct inode *inode = data->state->inode; | |
1164 | struct nfs4_state *state = data->state; | |
1165 | int ret; | |
1166 | ||
1167 | if (!data->rpc_done) { | |
1168 | ret = data->rpc_status; | |
1169 | goto err; | |
1170 | } | |
1171 | ||
1172 | ret = -ESTALE; | |
1173 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1174 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1175 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1176 | goto err; | |
1177 | ||
1178 | ret = -ENOMEM; | |
1179 | state = nfs4_get_open_state(inode, data->owner); | |
1180 | if (state == NULL) | |
1181 | goto err; | |
1182 | ||
1183 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1184 | if (ret) | |
1185 | goto err; | |
1186 | ||
1187 | if (data->o_res.delegation_type != 0) | |
1188 | nfs4_opendata_check_deleg(data, state); | |
1189 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1190 | data->o_arg.fmode); | |
1191 | ||
1192 | return state; | |
1193 | err: | |
1194 | return ERR_PTR(ret); | |
1195 | ||
1196 | } | |
1197 | ||
1198 | static struct nfs4_state * | |
1199 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1200 | { |
1201 | struct inode *inode; | |
1202 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1203 | int ret; |
24ac23ab | 1204 | |
aac00a8d | 1205 | if (!data->rpc_done) { |
6ee41268 | 1206 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1207 | goto out; |
1208 | } | |
1209 | ||
1b370bc2 | 1210 | ret = -EAGAIN; |
24ac23ab | 1211 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1212 | goto err; |
1775fd3e | 1213 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1214 | ret = PTR_ERR(inode); |
03f28e3a | 1215 | if (IS_ERR(inode)) |
1b370bc2 TM |
1216 | goto err; |
1217 | ret = -ENOMEM; | |
24ac23ab TM |
1218 | state = nfs4_get_open_state(inode, data->owner); |
1219 | if (state == NULL) | |
1b370bc2 | 1220 | goto err_put_inode; |
e23008ec AA |
1221 | if (data->o_res.delegation_type != 0) |
1222 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1223 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1224 | data->o_arg.fmode); |
24ac23ab | 1225 | iput(inode); |
aac00a8d | 1226 | out: |
7aa262b5 | 1227 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1228 | return state; |
1b370bc2 TM |
1229 | err_put_inode: |
1230 | iput(inode); | |
1231 | err: | |
1232 | return ERR_PTR(ret); | |
24ac23ab TM |
1233 | } |
1234 | ||
e23008ec AA |
1235 | static struct nfs4_state * |
1236 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1237 | { | |
1238 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1239 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1240 | return _nfs4_opendata_to_nfs4_state(data); | |
1241 | } | |
1242 | ||
864472e9 TM |
1243 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1244 | { | |
1245 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1246 | struct nfs_open_context *ctx; | |
1247 | ||
1248 | spin_lock(&state->inode->i_lock); | |
1249 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1250 | if (ctx->state != state) | |
1251 | continue; | |
1252 | get_nfs_open_context(ctx); | |
1253 | spin_unlock(&state->inode->i_lock); | |
1254 | return ctx; | |
1255 | } | |
1256 | spin_unlock(&state->inode->i_lock); | |
1257 | return ERR_PTR(-ENOENT); | |
1258 | } | |
1259 | ||
4a1c0893 TM |
1260 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1261 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1262 | { |
1263 | struct nfs4_opendata *opendata; | |
1264 | ||
4a1c0893 | 1265 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1266 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1267 | if (opendata == NULL) |
1268 | return ERR_PTR(-ENOMEM); | |
1269 | opendata->state = state; | |
1270 | atomic_inc(&state->count); | |
1271 | return opendata; | |
1272 | } | |
1273 | ||
dc0b027d | 1274 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1275 | { |
2ced46c2 | 1276 | struct nfs4_state *newstate; |
864472e9 TM |
1277 | int ret; |
1278 | ||
dc0b027d TM |
1279 | opendata->o_arg.open_flags = 0; |
1280 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1281 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1282 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1283 | nfs4_init_opendata_res(opendata); | |
b257957e | 1284 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1285 | if (ret != 0) |
1286 | return ret; | |
2ced46c2 | 1287 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1288 | if (IS_ERR(newstate)) |
1289 | return PTR_ERR(newstate); | |
643168c2 | 1290 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1291 | *res = newstate; |
864472e9 TM |
1292 | return 0; |
1293 | } | |
1294 | ||
1295 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1296 | { | |
864472e9 | 1297 | struct nfs4_state *newstate; |
864472e9 TM |
1298 | int ret; |
1299 | ||
1300 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1301 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1302 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1303 | smp_rmb(); |
1304 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1305 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1306 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1307 | if (ret != 0) |
1308 | return ret; | |
2ced46c2 TM |
1309 | if (newstate != state) |
1310 | return -ESTALE; | |
864472e9 TM |
1311 | } |
1312 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1313 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1314 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1315 | if (ret != 0) |
1316 | return ret; | |
2ced46c2 TM |
1317 | if (newstate != state) |
1318 | return -ESTALE; | |
864472e9 TM |
1319 | } |
1320 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1321 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1322 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1323 | if (ret != 0) |
1324 | return ret; | |
2ced46c2 TM |
1325 | if (newstate != state) |
1326 | return -ESTALE; | |
864472e9 | 1327 | } |
1ac7e2fd TM |
1328 | /* |
1329 | * We may have performed cached opens for all three recoveries. | |
1330 | * Check if we need to update the current stateid. | |
1331 | */ | |
1332 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1333 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1334 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1335 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1336 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1337 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1338 | } |
864472e9 TM |
1339 | return 0; |
1340 | } | |
1341 | ||
1da177e4 LT |
1342 | /* |
1343 | * OPEN_RECLAIM: | |
1344 | * reclaim state on the server after a reboot. | |
1da177e4 | 1345 | */ |
539cd03a | 1346 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1347 | { |
1ac7e2fd | 1348 | struct nfs_delegation *delegation; |
864472e9 | 1349 | struct nfs4_opendata *opendata; |
dc0b027d | 1350 | fmode_t delegation_type = 0; |
1da177e4 LT |
1351 | int status; |
1352 | ||
4a1c0893 TM |
1353 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1354 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1355 | if (IS_ERR(opendata)) |
1356 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1357 | rcu_read_lock(); |
1358 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1359 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1360 | delegation_type = delegation->type; |
1ac7e2fd | 1361 | rcu_read_unlock(); |
864472e9 TM |
1362 | opendata->o_arg.u.delegation_type = delegation_type; |
1363 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1364 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1365 | return status; |
1366 | } | |
1367 | ||
539cd03a | 1368 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1369 | { |
1370 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1371 | struct nfs4_exception exception = { }; | |
1372 | int err; | |
1373 | do { | |
539cd03a | 1374 | err = _nfs4_do_open_reclaim(ctx, state); |
49f9a0fa TM |
1375 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1376 | continue; | |
168667c4 | 1377 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1378 | break; |
1379 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1380 | } while (exception.retry); |
1381 | return err; | |
1382 | } | |
1383 | ||
864472e9 TM |
1384 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1385 | { | |
1386 | struct nfs_open_context *ctx; | |
1387 | int ret; | |
1388 | ||
1389 | ctx = nfs4_state_find_open_context(state); | |
1390 | if (IS_ERR(ctx)) | |
91876b13 | 1391 | return -EAGAIN; |
539cd03a | 1392 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1393 | put_nfs_open_context(ctx); |
1394 | return ret; | |
1395 | } | |
1396 | ||
db4f2e63 | 1397 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1398 | { |
be76b5b6 TM |
1399 | switch (err) { |
1400 | default: | |
1401 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1402 | "%d.\n", __func__, err); | |
1403 | case 0: | |
1404 | case -ENOENT: | |
1405 | case -ESTALE: | |
1406 | break; | |
1407 | case -NFS4ERR_BADSESSION: | |
1408 | case -NFS4ERR_BADSLOT: | |
1409 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1410 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1411 | case -NFS4ERR_DEADSESSION: | |
1412 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1413 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1414 | return -EAGAIN; | |
1415 | case -NFS4ERR_STALE_CLIENTID: | |
1416 | case -NFS4ERR_STALE_STATEID: | |
1417 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1418 | case -NFS4ERR_EXPIRED: | |
1419 | /* Don't recall a delegation if it was lost */ | |
1420 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1421 | return -EAGAIN; | |
1422 | case -NFS4ERR_DELEG_REVOKED: | |
1423 | case -NFS4ERR_ADMIN_REVOKED: | |
1424 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1425 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1426 | nfs_inode_find_state_and_recover(state->inode, |
1427 | stateid); | |
1428 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1429 | return 0; |
1430 | case -NFS4ERR_DELAY: | |
1431 | case -NFS4ERR_GRACE: | |
1432 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1433 | ssleep(1); | |
1434 | return -EAGAIN; | |
db4f2e63 TM |
1435 | case -ENOMEM: |
1436 | case -NFS4ERR_DENIED: | |
1437 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1438 | return 0; | |
be76b5b6 | 1439 | } |
1da177e4 LT |
1440 | return err; |
1441 | } | |
1442 | ||
db4f2e63 TM |
1443 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1444 | { | |
1445 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1446 | struct nfs4_opendata *opendata; | |
1447 | int err; | |
1448 | ||
1449 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1450 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1451 | if (IS_ERR(opendata)) | |
1452 | return PTR_ERR(opendata); | |
1453 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1454 | err = nfs4_open_recover(opendata, state); | |
1455 | nfs4_opendata_put(opendata); | |
1456 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1457 | } | |
1458 | ||
cdd4e68b TM |
1459 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1460 | { | |
1461 | struct nfs4_opendata *data = calldata; | |
1462 | ||
1463 | data->rpc_status = task->tk_status; | |
26e976a8 | 1464 | if (data->rpc_status == 0) { |
f597c537 | 1465 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1466 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1467 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1468 | data->rpc_done = 1; |
26e976a8 | 1469 | } |
cdd4e68b TM |
1470 | } |
1471 | ||
1472 | static void nfs4_open_confirm_release(void *calldata) | |
1473 | { | |
1474 | struct nfs4_opendata *data = calldata; | |
1475 | struct nfs4_state *state = NULL; | |
1476 | ||
1477 | /* If this request hasn't been cancelled, do nothing */ | |
1478 | if (data->cancelled == 0) | |
1479 | goto out_free; | |
1480 | /* In case of error, no cleanup! */ | |
3e309914 | 1481 | if (!data->rpc_done) |
cdd4e68b | 1482 | goto out_free; |
cdd4e68b | 1483 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1484 | if (!IS_ERR(state)) |
643168c2 | 1485 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1486 | out_free: |
c6d00e63 | 1487 | nfs4_opendata_put(data); |
cdd4e68b TM |
1488 | } |
1489 | ||
1490 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1491 | .rpc_call_done = nfs4_open_confirm_done, |
1492 | .rpc_release = nfs4_open_confirm_release, | |
1493 | }; | |
1494 | ||
1495 | /* | |
1496 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1497 | */ | |
1498 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1499 | { | |
1500 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1501 | struct rpc_task *task; | |
5138fde0 TM |
1502 | struct rpc_message msg = { |
1503 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1504 | .rpc_argp = &data->c_arg, | |
1505 | .rpc_resp = &data->c_res, | |
1506 | .rpc_cred = data->owner->so_cred, | |
1507 | }; | |
c970aa85 TM |
1508 | struct rpc_task_setup task_setup_data = { |
1509 | .rpc_client = server->client, | |
5138fde0 | 1510 | .rpc_message = &msg, |
c970aa85 TM |
1511 | .callback_ops = &nfs4_open_confirm_ops, |
1512 | .callback_data = data, | |
101070ca | 1513 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1514 | .flags = RPC_TASK_ASYNC, |
1515 | }; | |
1da177e4 LT |
1516 | int status; |
1517 | ||
c6d00e63 | 1518 | kref_get(&data->kref); |
3e309914 TM |
1519 | data->rpc_done = 0; |
1520 | data->rpc_status = 0; | |
5138fde0 | 1521 | data->timestamp = jiffies; |
c970aa85 | 1522 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1523 | if (IS_ERR(task)) |
cdd4e68b | 1524 | return PTR_ERR(task); |
cdd4e68b TM |
1525 | status = nfs4_wait_for_completion_rpc_task(task); |
1526 | if (status != 0) { | |
1527 | data->cancelled = 1; | |
1528 | smp_wmb(); | |
1529 | } else | |
1530 | status = data->rpc_status; | |
e6b3c4db | 1531 | rpc_put_task(task); |
1da177e4 LT |
1532 | return status; |
1533 | } | |
1534 | ||
24ac23ab | 1535 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1536 | { |
24ac23ab TM |
1537 | struct nfs4_opendata *data = calldata; |
1538 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1539 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1540 | |
24ac23ab | 1541 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1542 | goto out_wait; |
aac00a8d TM |
1543 | /* |
1544 | * Check if we still need to send an OPEN call, or if we can use | |
1545 | * a delegation instead. | |
1546 | */ | |
1547 | if (data->state != NULL) { | |
1548 | struct nfs_delegation *delegation; | |
1549 | ||
dc0b027d | 1550 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1551 | goto out_no_action; |
aac00a8d TM |
1552 | rcu_read_lock(); |
1553 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1554 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1555 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1556 | can_open_delegated(delegation, data->o_arg.fmode)) |
1557 | goto unlock_no_action; | |
aac00a8d TM |
1558 | rcu_read_unlock(); |
1559 | } | |
95b72eb0 | 1560 | /* Update client id. */ |
549b19cc | 1561 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1562 | switch (data->o_arg.claim) { |
1563 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1564 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1565 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1566 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1567 | case NFS4_OPEN_CLAIM_FH: |
1568 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1569 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1570 | } | |
26e976a8 | 1571 | data->timestamp = jiffies; |
035168ab | 1572 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1573 | &data->o_arg.seq_args, |
2240a9e2 TM |
1574 | &data->o_res.seq_res, |
1575 | task) != 0) | |
1576 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1577 | |
1578 | /* Set the create mode (note dependency on the session type) */ | |
1579 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1580 | if (data->o_arg.open_flags & O_EXCL) { | |
1581 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1582 | if (nfs4_has_persistent_session(clp)) | |
1583 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1584 | else if (clp->cl_mvops->minor_version > 0) | |
1585 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1586 | } | |
6ee41268 | 1587 | return; |
652f89f6 TM |
1588 | unlock_no_action: |
1589 | rcu_read_unlock(); | |
6ee41268 TM |
1590 | out_no_action: |
1591 | task->tk_action = NULL; | |
c8da19b9 | 1592 | out_wait: |
b75ad4cd | 1593 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1594 | } |
1595 | ||
24ac23ab TM |
1596 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1597 | { | |
1598 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1599 | |
24ac23ab | 1600 | data->rpc_status = task->tk_status; |
d898528c | 1601 | |
14516c3a TM |
1602 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1603 | return; | |
d898528c | 1604 | |
24ac23ab | 1605 | if (task->tk_status == 0) { |
807d66d8 TM |
1606 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1607 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1608 | case S_IFREG: |
1609 | break; | |
1610 | case S_IFLNK: | |
24ac23ab | 1611 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1612 | break; |
1613 | case S_IFDIR: | |
24ac23ab | 1614 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1615 | break; |
1616 | default: | |
24ac23ab | 1617 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1618 | } |
6f926b5b | 1619 | } |
26e976a8 | 1620 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1621 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1622 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1623 | } |
3e309914 | 1624 | data->rpc_done = 1; |
24ac23ab | 1625 | } |
6f926b5b | 1626 | |
24ac23ab TM |
1627 | static void nfs4_open_release(void *calldata) |
1628 | { | |
1629 | struct nfs4_opendata *data = calldata; | |
1630 | struct nfs4_state *state = NULL; | |
1631 | ||
1632 | /* If this request hasn't been cancelled, do nothing */ | |
1633 | if (data->cancelled == 0) | |
1634 | goto out_free; | |
1635 | /* In case of error, no cleanup! */ | |
3e309914 | 1636 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1637 | goto out_free; |
1638 | /* In case we need an open_confirm, no cleanup! */ | |
1639 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1640 | goto out_free; | |
24ac23ab | 1641 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1642 | if (!IS_ERR(state)) |
643168c2 | 1643 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1644 | out_free: |
c6d00e63 | 1645 | nfs4_opendata_put(data); |
24ac23ab TM |
1646 | } |
1647 | ||
1648 | static const struct rpc_call_ops nfs4_open_ops = { | |
1649 | .rpc_call_prepare = nfs4_open_prepare, | |
1650 | .rpc_call_done = nfs4_open_done, | |
1651 | .rpc_release = nfs4_open_release, | |
1652 | }; | |
1653 | ||
b257957e | 1654 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1655 | { |
1656 | struct inode *dir = data->dir->d_inode; | |
1657 | struct nfs_server *server = NFS_SERVER(dir); | |
1658 | struct nfs_openargs *o_arg = &data->o_arg; | |
1659 | struct nfs_openres *o_res = &data->o_res; | |
1660 | struct rpc_task *task; | |
5138fde0 TM |
1661 | struct rpc_message msg = { |
1662 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1663 | .rpc_argp = o_arg, | |
1664 | .rpc_resp = o_res, | |
1665 | .rpc_cred = data->owner->so_cred, | |
1666 | }; | |
c970aa85 TM |
1667 | struct rpc_task_setup task_setup_data = { |
1668 | .rpc_client = server->client, | |
5138fde0 | 1669 | .rpc_message = &msg, |
c970aa85 TM |
1670 | .callback_ops = &nfs4_open_ops, |
1671 | .callback_data = data, | |
101070ca | 1672 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1673 | .flags = RPC_TASK_ASYNC, |
1674 | }; | |
24ac23ab TM |
1675 | int status; |
1676 | ||
9d12b216 | 1677 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1678 | kref_get(&data->kref); |
3e309914 TM |
1679 | data->rpc_done = 0; |
1680 | data->rpc_status = 0; | |
2ced46c2 | 1681 | data->cancelled = 0; |
bdeca1b7 TM |
1682 | data->is_recover = 0; |
1683 | if (isrecover) { | |
8fe72bac | 1684 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1685 | data->is_recover = 1; |
1686 | } | |
c970aa85 | 1687 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1688 | if (IS_ERR(task)) |
1689 | return PTR_ERR(task); | |
1690 | status = nfs4_wait_for_completion_rpc_task(task); | |
1691 | if (status != 0) { | |
1692 | data->cancelled = 1; | |
1693 | smp_wmb(); | |
1694 | } else | |
1695 | status = data->rpc_status; | |
1696 | rpc_put_task(task); | |
1697 | ||
1698 | return status; | |
1699 | } | |
1700 | ||
1701 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1702 | { | |
1703 | struct inode *dir = data->dir->d_inode; | |
1704 | struct nfs_openres *o_res = &data->o_res; | |
1705 | int status; | |
1706 | ||
1707 | status = nfs4_run_open_task(data, 1); | |
1708 | if (status != 0 || !data->rpc_done) | |
1709 | return status; | |
1710 | ||
6926afd1 TM |
1711 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1712 | ||
b257957e AB |
1713 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1714 | status = _nfs4_proc_open_confirm(data); | |
1715 | if (status != 0) | |
1716 | return status; | |
1717 | } | |
1718 | ||
1719 | return status; | |
1720 | } | |
1721 | ||
6168f62c WAA |
1722 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1723 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1724 | struct nfs4_state *state, fmode_t fmode, |
1725 | int openflags) | |
6168f62c WAA |
1726 | { |
1727 | struct nfs_access_entry cache; | |
1728 | u32 mask; | |
1729 | ||
1730 | /* access call failed or for some reason the server doesn't | |
1731 | * support any access modes -- defer access call until later */ | |
1732 | if (opendata->o_res.access_supported == 0) | |
1733 | return 0; | |
1734 | ||
1735 | mask = 0; | |
bbd3a8ee | 1736 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1737 | * write mode bits, but POSIX allows the creating process to write. |
1738 | * use openflags to check for exec, because fmode won't | |
1739 | * always have FMODE_EXEC set when file open for exec. */ | |
1740 | if (openflags & __FMODE_EXEC) { | |
1741 | /* ONLY check for exec rights */ | |
1742 | mask = MAY_EXEC; | |
1743 | } else if (fmode & FMODE_READ) | |
1744 | mask = MAY_READ; | |
6168f62c WAA |
1745 | |
1746 | cache.cred = cred; | |
1747 | cache.jiffies = jiffies; | |
1748 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1749 | nfs_access_add_cache(state->inode, &cache); | |
1750 | ||
bbd3a8ee | 1751 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1752 | return 0; |
1753 | ||
1754 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1755 | nfs4_close_state(state, fmode); | |
998f40b5 | 1756 | return -EACCES; |
6168f62c WAA |
1757 | } |
1758 | ||
b257957e AB |
1759 | /* |
1760 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1761 | */ | |
1762 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1763 | { | |
1764 | struct inode *dir = data->dir->d_inode; | |
1765 | struct nfs_server *server = NFS_SERVER(dir); | |
1766 | struct nfs_openargs *o_arg = &data->o_arg; | |
1767 | struct nfs_openres *o_res = &data->o_res; | |
1768 | int status; | |
1769 | ||
1770 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1771 | if (!data->rpc_done) |
1772 | return status; | |
1773 | if (status != 0) { | |
1774 | if (status == -NFS4ERR_BADNAME && | |
1775 | !(o_arg->open_flags & O_CREAT)) | |
1776 | return -ENOENT; | |
24ac23ab | 1777 | return status; |
08ef7bd3 | 1778 | } |
24ac23ab | 1779 | |
6926afd1 TM |
1780 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1781 | ||
90ff0c54 | 1782 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1783 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1784 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1785 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1786 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1787 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1788 | if (status != 0) |
24ac23ab | 1789 | return status; |
1da177e4 LT |
1790 | } |
1791 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1792 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1793 | return 0; |
1da177e4 LT |
1794 | } |
1795 | ||
d83217c1 AA |
1796 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1797 | { | |
1798 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1799 | } | |
1800 | ||
1da177e4 LT |
1801 | /* |
1802 | * OPEN_EXPIRED: | |
1803 | * reclaim state on the server after a network partition. | |
1804 | * Assumes caller holds the appropriate lock | |
1805 | */ | |
539cd03a | 1806 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1807 | { |
e56e0b78 | 1808 | struct nfs4_opendata *opendata; |
864472e9 | 1809 | int ret; |
1da177e4 | 1810 | |
4a1c0893 | 1811 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1812 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1813 | if (IS_ERR(opendata)) |
1814 | return PTR_ERR(opendata); | |
864472e9 | 1815 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1816 | if (ret == -ESTALE) |
3d4ff43d | 1817 | d_drop(ctx->dentry); |
c6d00e63 | 1818 | nfs4_opendata_put(opendata); |
864472e9 | 1819 | return ret; |
1da177e4 LT |
1820 | } |
1821 | ||
a9ed2e25 | 1822 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1823 | { |
539cd03a | 1824 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1825 | struct nfs4_exception exception = { }; |
1826 | int err; | |
1827 | ||
1828 | do { | |
539cd03a | 1829 | err = _nfs4_open_expired(ctx, state); |
49f9a0fa TM |
1830 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1831 | continue; | |
a9ed2e25 TM |
1832 | switch (err) { |
1833 | default: | |
1834 | goto out; | |
1835 | case -NFS4ERR_GRACE: | |
1836 | case -NFS4ERR_DELAY: | |
1837 | nfs4_handle_exception(server, err, &exception); | |
1838 | err = 0; | |
1839 | } | |
202b50dc | 1840 | } while (exception.retry); |
a9ed2e25 | 1841 | out: |
202b50dc TM |
1842 | return err; |
1843 | } | |
1844 | ||
1da177e4 LT |
1845 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1846 | { | |
1da177e4 | 1847 | struct nfs_open_context *ctx; |
864472e9 | 1848 | int ret; |
1da177e4 | 1849 | |
864472e9 TM |
1850 | ctx = nfs4_state_find_open_context(state); |
1851 | if (IS_ERR(ctx)) | |
91876b13 | 1852 | return -EAGAIN; |
539cd03a | 1853 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1854 | put_nfs_open_context(ctx); |
1855 | return ret; | |
1da177e4 LT |
1856 | } |
1857 | ||
f062eb6c | 1858 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1859 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1860 | { |
f062eb6c | 1861 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1862 | nfs4_stateid *stateid = &state->stateid; |
1863 | int status; | |
1864 | ||
1865 | /* If a state reset has been done, test_stateid is unneeded */ | |
1866 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1867 | return; | |
1868 | ||
1869 | status = nfs41_test_stateid(server, stateid); | |
1870 | if (status != NFS_OK) { | |
1871 | /* Free the stateid unless the server explicitly | |
1872 | * informs us the stateid is unrecognized. */ | |
1873 | if (status != -NFS4ERR_BAD_STATEID) | |
1874 | nfs41_free_stateid(server, stateid); | |
6938867e | 1875 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1876 | |
6938867e BS |
1877 | write_seqlock(&state->seqlock); |
1878 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1879 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1880 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1881 | } | |
1882 | } | |
1883 | ||
1884 | /** | |
1885 | * nfs41_check_open_stateid - possibly free an open stateid | |
1886 | * | |
1887 | * @state: NFSv4 state for an inode | |
1888 | * | |
1889 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1890 | * Otherwise a negative NFS4ERR value is returned. | |
1891 | */ | |
1892 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1893 | { | |
1894 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1895 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1896 | int status; |
1897 | ||
1898 | /* If a state reset has been done, test_stateid is unneeded */ | |
1899 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1900 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1901 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1902 | return -NFS4ERR_BAD_STATEID; | |
1903 | ||
1904 | status = nfs41_test_stateid(server, stateid); | |
1905 | if (status != NFS_OK) { | |
1906 | /* Free the stateid unless the server explicitly | |
1907 | * informs us the stateid is unrecognized. */ | |
1908 | if (status != -NFS4ERR_BAD_STATEID) | |
1909 | nfs41_free_stateid(server, stateid); | |
1910 | ||
1911 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1912 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1913 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 1914 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
1915 | } |
1916 | return status; | |
1917 | } | |
1918 | ||
1919 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1920 | { | |
eb64cf96 | 1921 | int status; |
b01dd1d8 | 1922 | |
3e60ffdd CL |
1923 | nfs41_clear_delegation_stateid(state); |
1924 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1925 | if (status != NFS_OK) |
1926 | status = nfs4_open_expired(sp, state); | |
1927 | return status; | |
f062eb6c BS |
1928 | } |
1929 | #endif | |
1930 | ||
aa53ed54 JL |
1931 | /* |
1932 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1933 | * fields corresponding to attributes that were used to store the verifier. | |
1934 | * Make sure we clobber those fields in the later setattr call | |
1935 | */ | |
1936 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1937 | { | |
1938 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1939 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1940 | sattr->ia_valid |= ATTR_ATIME; | |
1941 | ||
1942 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1943 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1944 | sattr->ia_valid |= ATTR_MTIME; | |
1945 | } | |
1946 | ||
c21443c2 TM |
1947 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1948 | fmode_t fmode, | |
1949 | int flags, | |
1950 | struct nfs4_state **res) | |
1951 | { | |
1952 | struct nfs4_state_owner *sp = opendata->owner; | |
1953 | struct nfs_server *server = sp->so_server; | |
1954 | struct nfs4_state *state; | |
1955 | unsigned int seq; | |
1956 | int ret; | |
1957 | ||
1958 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
1959 | ||
1960 | ret = _nfs4_proc_open(opendata); | |
1961 | if (ret != 0) | |
1962 | goto out; | |
1963 | ||
1964 | state = nfs4_opendata_to_nfs4_state(opendata); | |
1965 | ret = PTR_ERR(state); | |
1966 | if (IS_ERR(state)) | |
1967 | goto out; | |
1968 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
1969 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
1970 | ||
1971 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); | |
1972 | if (ret != 0) | |
1973 | goto out; | |
1974 | ||
91876b13 | 1975 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) |
c21443c2 | 1976 | nfs4_schedule_stateid_recovery(server, state); |
c21443c2 TM |
1977 | *res = state; |
1978 | out: | |
1979 | return ret; | |
1980 | } | |
1981 | ||
1da177e4 | 1982 | /* |
24ac23ab | 1983 | * Returns a referenced nfs4_state |
1da177e4 | 1984 | */ |
82be417a AA |
1985 | static int _nfs4_do_open(struct inode *dir, |
1986 | struct dentry *dentry, | |
1987 | fmode_t fmode, | |
1988 | int flags, | |
1989 | struct iattr *sattr, | |
1775fd3e | 1990 | struct nfs4_label *label, |
82be417a AA |
1991 | struct rpc_cred *cred, |
1992 | struct nfs4_state **res, | |
1993 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1994 | { |
1995 | struct nfs4_state_owner *sp; | |
1996 | struct nfs4_state *state = NULL; | |
1997 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1998 | struct nfs4_opendata *opendata; |
49f9a0fa | 1999 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2000 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2001 | int status; |
1da177e4 LT |
2002 | |
2003 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2004 | status = -ENOMEM; |
d1e284d5 TM |
2005 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2006 | if (sp == NULL) { | |
1da177e4 LT |
2007 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2008 | goto out_err; | |
2009 | } | |
58d9714a TM |
2010 | status = nfs4_recover_expired_lease(server); |
2011 | if (status != 0) | |
b4454fe1 | 2012 | goto err_put_state_owner; |
82a2c1b7 AV |
2013 | if (dentry->d_inode != NULL) |
2014 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2015 | status = -ENOMEM; |
49f9a0fa TM |
2016 | if (dentry->d_inode) |
2017 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2018 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2019 | label, claim, GFP_KERNEL); |
e56e0b78 | 2020 | if (opendata == NULL) |
95d35cb4 | 2021 | goto err_put_state_owner; |
1da177e4 | 2022 | |
82be417a AA |
2023 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2024 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2025 | if (!opendata->f_attr.mdsthreshold) | |
2026 | goto err_opendata_put; | |
1549210f | 2027 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2028 | } |
82a2c1b7 AV |
2029 | if (dentry->d_inode != NULL) |
2030 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2031 | |
c21443c2 | 2032 | status = _nfs4_open_and_get_state(opendata, fmode, flags, &state); |
6168f62c WAA |
2033 | if (status != 0) |
2034 | goto err_opendata_put; | |
2035 | ||
549b19cc TM |
2036 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2037 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2038 | nfs4_exclusive_attrset(opendata, sattr); |
2039 | ||
2040 | nfs_fattr_init(opendata->o_res.f_attr); | |
2041 | status = nfs4_do_setattr(state->inode, cred, | |
2042 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2043 | state, label, olabel); |
2044 | if (status == 0) { | |
0ab64e0e | 2045 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e DQ |
2046 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
2047 | } | |
0ab64e0e | 2048 | } |
82be417a AA |
2049 | |
2050 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2051 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2052 | else | |
2053 | kfree(opendata->f_attr.mdsthreshold); | |
2054 | opendata->f_attr.mdsthreshold = NULL; | |
2055 | ||
c6d00e63 | 2056 | nfs4_opendata_put(opendata); |
1da177e4 | 2057 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2058 | *res = state; |
2059 | return 0; | |
c6d00e63 | 2060 | err_opendata_put: |
82be417a | 2061 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2062 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2063 | err_put_state_owner: |
2064 | nfs4_put_state_owner(sp); | |
1da177e4 | 2065 | out_err: |
1da177e4 LT |
2066 | *res = NULL; |
2067 | return status; | |
2068 | } | |
2069 | ||
2070 | ||
82be417a AA |
2071 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2072 | struct dentry *dentry, | |
2073 | fmode_t fmode, | |
2074 | int flags, | |
2075 | struct iattr *sattr, | |
1775fd3e | 2076 | struct nfs4_label *label, |
82be417a AA |
2077 | struct rpc_cred *cred, |
2078 | struct nfs4_threshold **ctx_th) | |
1da177e4 | 2079 | { |
49f9a0fa | 2080 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2081 | struct nfs4_exception exception = { }; |
2082 | struct nfs4_state *res; | |
2083 | int status; | |
2084 | ||
6168f62c | 2085 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2086 | do { |
1775fd3e | 2087 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, label, cred, |
82be417a | 2088 | &res, ctx_th); |
1da177e4 LT |
2089 | if (status == 0) |
2090 | break; | |
2091 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2092 | * book-keeping w.r.t. state-changing operations | |
2093 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2094 | * It is actually a sign of a bug on the client or on the server. | |
2095 | * | |
2096 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2097 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2098 | * have unhashed the old state_owner for us, and that we can |
2099 | * therefore safely retry using a new one. We should still warn | |
2100 | * the user though... | |
2101 | */ | |
2102 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2103 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2104 | " returned a bad sequence-id error!\n", |
2105 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2106 | exception.retry = 1; |
2107 | continue; | |
2108 | } | |
550f5747 TM |
2109 | /* |
2110 | * BAD_STATEID on OPEN means that the server cancelled our | |
2111 | * state before it received the OPEN_CONFIRM. | |
2112 | * Recover by retrying the request as per the discussion | |
2113 | * on Page 181 of RFC3530. | |
2114 | */ | |
2115 | if (status == -NFS4ERR_BAD_STATEID) { | |
2116 | exception.retry = 1; | |
2117 | continue; | |
2118 | } | |
aac00a8d TM |
2119 | if (status == -EAGAIN) { |
2120 | /* We must have found a delegation */ | |
2121 | exception.retry = 1; | |
2122 | continue; | |
2123 | } | |
49f9a0fa TM |
2124 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2125 | continue; | |
2126 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2127 | status, &exception)); |
2128 | } while (exception.retry); | |
2129 | return res; | |
2130 | } | |
2131 | ||
659bfcd6 TM |
2132 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2133 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2134 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2135 | struct nfs4_label *olabel) | |
1da177e4 | 2136 | { |
3e4f6290 | 2137 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2138 | struct nfs_setattrargs arg = { |
3e4f6290 | 2139 | .fh = NFS_FH(inode), |
1da177e4 LT |
2140 | .iap = sattr, |
2141 | .server = server, | |
2142 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2143 | .label = ilabel, |
1da177e4 LT |
2144 | }; |
2145 | struct nfs_setattrres res = { | |
2146 | .fattr = fattr, | |
1775fd3e | 2147 | .label = olabel, |
1da177e4 LT |
2148 | .server = server, |
2149 | }; | |
2150 | struct rpc_message msg = { | |
659bfcd6 TM |
2151 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2152 | .rpc_argp = &arg, | |
2153 | .rpc_resp = &res, | |
2154 | .rpc_cred = cred, | |
1da177e4 | 2155 | }; |
26e976a8 | 2156 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2157 | fmode_t fmode; |
2158 | bool truncate; | |
65e4308d | 2159 | int status; |
1da177e4 | 2160 | |
0e574af1 | 2161 | nfs_fattr_init(fattr); |
1da177e4 | 2162 | |
ee3ae84e TM |
2163 | /* Servers should only apply open mode checks for file size changes */ |
2164 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2165 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2166 | ||
2167 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2168 | /* Use that stateid */ | |
2169 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2170 | struct nfs_lockowner lockowner = { |
2171 | .l_owner = current->files, | |
2172 | .l_pid = current->tgid, | |
2173 | }; | |
4fc8796d | 2174 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2175 | &lockowner); |
08e9eac4 | 2176 | } else |
f597c537 | 2177 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2178 | |
7c513058 | 2179 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2180 | if (status == 0 && state != NULL) |
2181 | renew_lease(server, timestamp); | |
65e4308d | 2182 | return status; |
1da177e4 LT |
2183 | } |
2184 | ||
659bfcd6 TM |
2185 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2186 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2187 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2188 | struct nfs4_label *olabel) | |
1da177e4 | 2189 | { |
3e4f6290 | 2190 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2191 | struct nfs4_exception exception = { |
2192 | .state = state, | |
3114ea7a | 2193 | .inode = inode, |
a1d0b5ee | 2194 | }; |
1da177e4 LT |
2195 | int err; |
2196 | do { | |
1775fd3e | 2197 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
451146be TM |
2198 | switch (err) { |
2199 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2200 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2201 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2202 | "applying open mode checks to " | |
2203 | "a SETATTR that is not " | |
2204 | "changing file size.\n", | |
2205 | server->nfs_client->cl_hostname); | |
2206 | } | |
451146be TM |
2207 | if (state && !(state->state & FMODE_WRITE)) { |
2208 | err = -EBADF; | |
2209 | if (sattr->ia_valid & ATTR_OPEN) | |
2210 | err = -EACCES; | |
2211 | goto out; | |
2212 | } | |
2213 | } | |
2214 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2215 | } while (exception.retry); |
451146be | 2216 | out: |
1da177e4 LT |
2217 | return err; |
2218 | } | |
2219 | ||
2220 | struct nfs4_closedata { | |
2221 | struct inode *inode; | |
2222 | struct nfs4_state *state; | |
2223 | struct nfs_closeargs arg; | |
2224 | struct nfs_closeres res; | |
516a6af6 | 2225 | struct nfs_fattr fattr; |
26e976a8 | 2226 | unsigned long timestamp; |
f7e8917a FI |
2227 | bool roc; |
2228 | u32 roc_barrier; | |
1da177e4 LT |
2229 | }; |
2230 | ||
963d8fe5 | 2231 | static void nfs4_free_closedata(void *data) |
9512135d | 2232 | { |
963d8fe5 TM |
2233 | struct nfs4_closedata *calldata = data; |
2234 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2235 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2236 | |
f7e8917a FI |
2237 | if (calldata->roc) |
2238 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2239 | nfs4_put_open_state(calldata->state); |
2240 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2241 | nfs4_put_state_owner(sp); |
322b2b90 | 2242 | nfs_sb_deactive(sb); |
9512135d TM |
2243 | kfree(calldata); |
2244 | } | |
2245 | ||
88069f77 TM |
2246 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2247 | fmode_t fmode) | |
2248 | { | |
2249 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2250 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2251 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2252 | case FMODE_WRITE: | |
88069f77 | 2253 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2254 | break; |
2255 | case FMODE_READ: | |
88069f77 | 2256 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2257 | break; |
2258 | case 0: | |
2259 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2260 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2261 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2262 | } | |
88069f77 TM |
2263 | spin_unlock(&state->owner->so_lock); |
2264 | } | |
2265 | ||
963d8fe5 | 2266 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2267 | { |
963d8fe5 | 2268 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2269 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2270 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2271 | ||
a3ca5651 | 2272 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2273 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2274 | return; | |
1da177e4 LT |
2275 | /* hmm. we are done with the inode, and in the process of freeing |
2276 | * the state_owner. we keep this around to process errors | |
2277 | */ | |
1da177e4 LT |
2278 | switch (task->tk_status) { |
2279 | case 0: | |
f7e8917a FI |
2280 | if (calldata->roc) |
2281 | pnfs_roc_set_barrier(state->inode, | |
2282 | calldata->roc_barrier); | |
45328c35 | 2283 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2284 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2285 | nfs4_close_clear_stateid_flags(state, |
2286 | calldata->arg.fmode); | |
1da177e4 LT |
2287 | break; |
2288 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2289 | case -NFS4ERR_OLD_STATEID: |
2290 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2291 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2292 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2293 | break; |
1da177e4 | 2294 | default: |
72211dbe TM |
2295 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2296 | rpc_restart_call_prepare(task); | |
1da177e4 | 2297 | } |
72211dbe | 2298 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2299 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2300 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2301 | } |
2302 | ||
4ce70ada | 2303 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2304 | { |
4ce70ada | 2305 | struct nfs4_closedata *calldata = data; |
9512135d | 2306 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2307 | struct inode *inode = calldata->inode; |
88069f77 | 2308 | int call_close = 0; |
9512135d | 2309 | |
a3ca5651 | 2310 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2311 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2312 | goto out_wait; |
003707c7 | 2313 | |
88069f77 TM |
2314 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2315 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2316 | spin_lock(&state->owner->so_lock); |
003707c7 | 2317 | /* Calculate the change in open mode */ |
e7616923 | 2318 | if (state->n_rdwr == 0) { |
003707c7 | 2319 | if (state->n_rdonly == 0) { |
88069f77 TM |
2320 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2321 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2322 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2323 | } |
2324 | if (state->n_wronly == 0) { | |
88069f77 TM |
2325 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2326 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2327 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2328 | } |
e7616923 | 2329 | } |
5d422301 TM |
2330 | if (!nfs4_valid_open_stateid(state)) |
2331 | call_close = 0; | |
4cecb76f | 2332 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2333 | |
2334 | if (!call_close) { | |
963d8fe5 | 2335 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2336 | goto out_no_action; |
9512135d | 2337 | } |
88069f77 | 2338 | |
f7e8917a | 2339 | if (calldata->arg.fmode == 0) { |
88069f77 | 2340 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2341 | if (calldata->roc && |
b9536ad5 AA |
2342 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2343 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2344 | goto out_wait; |
b9536ad5 | 2345 | } |
f7e8917a | 2346 | } |
88069f77 | 2347 | |
516a6af6 | 2348 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2349 | calldata->timestamp = jiffies; |
7fdab069 | 2350 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2351 | &calldata->arg.seq_args, |
2352 | &calldata->res.seq_res, | |
2240a9e2 TM |
2353 | task) != 0) |
2354 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2355 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2356 | return; |
2357 | out_no_action: | |
2358 | task->tk_action = NULL; | |
2359 | out_wait: | |
2360 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2361 | } |
2362 | ||
963d8fe5 | 2363 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2364 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2365 | .rpc_call_done = nfs4_close_done, |
2366 | .rpc_release = nfs4_free_closedata, | |
2367 | }; | |
2368 | ||
1da177e4 LT |
2369 | /* |
2370 | * It is possible for data to be read/written from a mem-mapped file | |
2371 | * after the sys_close call (which hits the vfs layer as a flush). | |
2372 | * This means that we can't safely call nfsv4 close on a file until | |
2373 | * the inode is cleared. This in turn means that we are not good | |
2374 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2375 | * share state even when we are done with one of the three share | |
2376 | * stateid's in the inode. | |
2377 | * | |
2378 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2379 | */ | |
1f7977c1 | 2380 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2381 | { |
4a35bd41 | 2382 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2383 | struct nfs4_closedata *calldata; |
b39e625b TM |
2384 | struct nfs4_state_owner *sp = state->owner; |
2385 | struct rpc_task *task; | |
5138fde0 TM |
2386 | struct rpc_message msg = { |
2387 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2388 | .rpc_cred = state->owner->so_cred, | |
2389 | }; | |
c970aa85 TM |
2390 | struct rpc_task_setup task_setup_data = { |
2391 | .rpc_client = server->client, | |
5138fde0 | 2392 | .rpc_message = &msg, |
c970aa85 | 2393 | .callback_ops = &nfs4_close_ops, |
101070ca | 2394 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2395 | .flags = RPC_TASK_ASYNC, |
2396 | }; | |
9512135d | 2397 | int status = -ENOMEM; |
1da177e4 | 2398 | |
8535b2be | 2399 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2400 | if (calldata == NULL) |
9512135d | 2401 | goto out; |
9d12b216 | 2402 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2403 | calldata->inode = state->inode; |
1da177e4 | 2404 | calldata->state = state; |
4a35bd41 | 2405 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2406 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2407 | /* Serialization for the sequence id */ |
8535b2be | 2408 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2409 | if (calldata->arg.seqid == NULL) |
2410 | goto out_free_calldata; | |
dc0b027d | 2411 | calldata->arg.fmode = 0; |
a65318bf | 2412 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2413 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2414 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2415 | calldata->res.server = server; |
1f7977c1 | 2416 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2417 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2418 | |
1174dd1f TM |
2419 | msg.rpc_argp = &calldata->arg; |
2420 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2421 | task_setup_data.callback_data = calldata; |
2422 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2423 | if (IS_ERR(task)) |
2424 | return PTR_ERR(task); | |
a49c3c77 TM |
2425 | status = 0; |
2426 | if (wait) | |
2427 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2428 | rpc_put_task(task); |
a49c3c77 | 2429 | return status; |
9512135d TM |
2430 | out_free_calldata: |
2431 | kfree(calldata); | |
2432 | out: | |
b39e625b TM |
2433 | nfs4_put_open_state(state); |
2434 | nfs4_put_state_owner(sp); | |
9512135d | 2435 | return status; |
1da177e4 LT |
2436 | } |
2437 | ||
2b484297 | 2438 | static struct inode * |
cd9a1c0e | 2439 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2440 | { |
1da177e4 | 2441 | struct nfs4_state *state; |
1775fd3e | 2442 | struct nfs4_label *label = NULL; |
1da177e4 | 2443 | |
565277f6 | 2444 | /* Protect against concurrent sillydeletes */ |
1775fd3e | 2445 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, label, |
82be417a | 2446 | ctx->cred, &ctx->mdsthreshold); |
f46e0bd3 TM |
2447 | if (IS_ERR(state)) |
2448 | return ERR_CAST(state); | |
cd9a1c0e | 2449 | ctx->state = state; |
f46e0bd3 | 2450 | return igrab(state->inode); |
1da177e4 LT |
2451 | } |
2452 | ||
1185a552 | 2453 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2454 | { |
2455 | if (ctx->state == NULL) | |
2456 | return; | |
2457 | if (is_sync) | |
643168c2 | 2458 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2459 | else |
643168c2 | 2460 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2461 | } |
1da177e4 LT |
2462 | |
2463 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2464 | { | |
43652ad5 BH |
2465 | struct nfs4_server_caps_arg args = { |
2466 | .fhandle = fhandle, | |
2467 | }; | |
1da177e4 LT |
2468 | struct nfs4_server_caps_res res = {}; |
2469 | struct rpc_message msg = { | |
2470 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2471 | .rpc_argp = &args, |
1da177e4 LT |
2472 | .rpc_resp = &res, |
2473 | }; | |
2474 | int status; | |
2475 | ||
7c513058 | 2476 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2477 | if (status == 0) { |
2478 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2479 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2480 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2481 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2482 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2483 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2484 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2485 | server->caps |= NFS_CAP_ACLS; | |
2486 | if (res.has_links != 0) | |
2487 | server->caps |= NFS_CAP_HARDLINKS; | |
2488 | if (res.has_symlinks != 0) | |
2489 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2490 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2491 | server->caps |= NFS_CAP_FILEID; | |
2492 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2493 | server->caps |= NFS_CAP_MODE; | |
2494 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2495 | server->caps |= NFS_CAP_NLINK; | |
2496 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2497 | server->caps |= NFS_CAP_OWNER; | |
2498 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2499 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2500 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2501 | server->caps |= NFS_CAP_ATIME; | |
2502 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2503 | server->caps |= NFS_CAP_CTIME; | |
2504 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2505 | server->caps |= NFS_CAP_MTIME; | |
2506 | ||
a65318bf TM |
2507 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2508 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2509 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2510 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2511 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2512 | } |
cccef3b9 | 2513 | |
1da177e4 LT |
2514 | return status; |
2515 | } | |
2516 | ||
55a97593 | 2517 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2518 | { |
2519 | struct nfs4_exception exception = { }; | |
2520 | int err; | |
2521 | do { | |
2522 | err = nfs4_handle_exception(server, | |
2523 | _nfs4_server_capabilities(server, fhandle), | |
2524 | &exception); | |
2525 | } while (exception.retry); | |
2526 | return err; | |
2527 | } | |
2528 | ||
2529 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2530 | struct nfs_fsinfo *info) | |
2531 | { | |
1da177e4 LT |
2532 | struct nfs4_lookup_root_arg args = { |
2533 | .bitmask = nfs4_fattr_bitmap, | |
2534 | }; | |
2535 | struct nfs4_lookup_res res = { | |
2536 | .server = server, | |
0e574af1 | 2537 | .fattr = info->fattr, |
1da177e4 LT |
2538 | .fh = fhandle, |
2539 | }; | |
2540 | struct rpc_message msg = { | |
2541 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2542 | .rpc_argp = &args, | |
2543 | .rpc_resp = &res, | |
2544 | }; | |
008f55d0 | 2545 | |
0e574af1 | 2546 | nfs_fattr_init(info->fattr); |
7c513058 | 2547 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2548 | } |
2549 | ||
2550 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2551 | struct nfs_fsinfo *info) | |
2552 | { | |
2553 | struct nfs4_exception exception = { }; | |
2554 | int err; | |
2555 | do { | |
fb8a5ba8 BS |
2556 | err = _nfs4_lookup_root(server, fhandle, info); |
2557 | switch (err) { | |
2558 | case 0: | |
2559 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2560 | goto out; |
fb8a5ba8 BS |
2561 | default: |
2562 | err = nfs4_handle_exception(server, err, &exception); | |
2563 | } | |
1da177e4 | 2564 | } while (exception.retry); |
05e9cfb4 | 2565 | out: |
1da177e4 LT |
2566 | return err; |
2567 | } | |
2568 | ||
8f70e95f BS |
2569 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2570 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2571 | { | |
2572 | struct rpc_auth *auth; | |
2573 | int ret; | |
2574 | ||
2575 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2576 | if (IS_ERR(auth)) { |
75bc8821 | 2577 | ret = -EACCES; |
8f70e95f BS |
2578 | goto out; |
2579 | } | |
2580 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2581 | out: |
2582 | return ret; | |
2583 | } | |
2584 | ||
9a744ba3 CL |
2585 | /* |
2586 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2587 | * | |
2588 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2589 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2590 | * | |
2591 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2592 | * negative errno value. | |
2593 | */ | |
801a16dc | 2594 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2595 | struct nfs_fsinfo *info) |
1da177e4 | 2596 | { |
9a744ba3 CL |
2597 | /* Per 3530bis 15.33.5 */ |
2598 | static const rpc_authflavor_t flav_array[] = { | |
2599 | RPC_AUTH_GSS_KRB5P, | |
2600 | RPC_AUTH_GSS_KRB5I, | |
2601 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2602 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2603 | RPC_AUTH_NULL, |
2604 | }; | |
2605 | int status = -EPERM; | |
2606 | size_t i; | |
6a1a1e34 | 2607 | |
9a744ba3 | 2608 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2609 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2610 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2611 | continue; |
2612 | break; | |
8f70e95f | 2613 | } |
9a744ba3 | 2614 | |
fb8a5ba8 BS |
2615 | /* |
2616 | * -EACCESS could mean that the user doesn't have correct permissions | |
2617 | * to access the mount. It could also mean that we tried to mount | |
2618 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2619 | * existing mount programs don't handle -EACCES very well so it should | |
2620 | * be mapped to -EPERM instead. | |
2621 | */ | |
2622 | if (status == -EACCES) | |
2623 | status = -EPERM; | |
801a16dc BS |
2624 | return status; |
2625 | } | |
2626 | ||
2ed4b95b CL |
2627 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2628 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2629 | { | |
2630 | int mv = server->nfs_client->cl_minorversion; | |
2631 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2632 | } | |
2633 | ||
2634 | /** | |
2635 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2636 | * @server: initialized nfs_server handle | |
2637 | * @fhandle: we fill in the pseudo-fs root file handle | |
2638 | * @info: we fill in an FSINFO struct | |
2639 | * | |
2640 | * Returns zero on success, or a negative errno. | |
801a16dc | 2641 | */ |
3028eb2b BS |
2642 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2643 | struct nfs_fsinfo *info) | |
801a16dc | 2644 | { |
2ed4b95b CL |
2645 | int status; |
2646 | ||
2647 | status = nfs4_lookup_root(server, fhandle, info); | |
2648 | if ((status == -NFS4ERR_WRONGSEC) && | |
2649 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2650 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2651 | ||
1da177e4 LT |
2652 | if (status == 0) |
2653 | status = nfs4_server_capabilities(server, fhandle); | |
2654 | if (status == 0) | |
2655 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2656 | |
c12e87f4 | 2657 | return nfs4_map_errors(status); |
1da177e4 LT |
2658 | } |
2659 | ||
bae36241 BS |
2660 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2661 | struct nfs_fsinfo *info) | |
2662 | { | |
2663 | int error; | |
2664 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2665 | struct nfs4_label *label = NULL; |
bae36241 BS |
2666 | |
2667 | error = nfs4_server_capabilities(server, mntfh); | |
2668 | if (error < 0) { | |
2669 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2670 | return error; | |
2671 | } | |
2672 | ||
1775fd3e | 2673 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2674 | if (error < 0) { |
2675 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2676 | return error; | |
2677 | } | |
2678 | ||
2679 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2680 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2681 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2682 | ||
2683 | return error; | |
2684 | } | |
2685 | ||
6b97fd3d MN |
2686 | /* |
2687 | * Get locations and (maybe) other attributes of a referral. | |
2688 | * Note that we'll actually follow the referral later when | |
2689 | * we detect fsid mismatch in inode revalidation | |
2690 | */ | |
f05d147f BS |
2691 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2692 | const struct qstr *name, struct nfs_fattr *fattr, | |
2693 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2694 | { |
2695 | int status = -ENOMEM; | |
2696 | struct page *page = NULL; | |
2697 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2698 | |
2699 | page = alloc_page(GFP_KERNEL); | |
2700 | if (page == NULL) | |
2701 | goto out; | |
2702 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2703 | if (locations == NULL) | |
2704 | goto out; | |
2705 | ||
f05d147f | 2706 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2707 | if (status != 0) |
2708 | goto out; | |
2709 | /* Make sure server returned a different fsid for the referral */ | |
2710 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2711 | dprintk("%s: server did not return a different fsid for" |
2712 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2713 | status = -EIO; |
2714 | goto out; | |
2715 | } | |
533eb461 AA |
2716 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2717 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2718 | |
533eb461 | 2719 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2720 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2721 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2722 | out: | |
2723 | if (page) | |
2724 | __free_page(page); | |
5d7ca35a | 2725 | kfree(locations); |
6b97fd3d MN |
2726 | return status; |
2727 | } | |
2728 | ||
1775fd3e DQ |
2729 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2730 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2731 | { |
2732 | struct nfs4_getattr_arg args = { | |
2733 | .fh = fhandle, | |
2734 | .bitmask = server->attr_bitmask, | |
2735 | }; | |
2736 | struct nfs4_getattr_res res = { | |
2737 | .fattr = fattr, | |
1775fd3e | 2738 | .label = label, |
1da177e4 LT |
2739 | .server = server, |
2740 | }; | |
2741 | struct rpc_message msg = { | |
2742 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2743 | .rpc_argp = &args, | |
2744 | .rpc_resp = &res, | |
2745 | }; | |
2746 | ||
0e574af1 | 2747 | nfs_fattr_init(fattr); |
7c513058 | 2748 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2749 | } |
2750 | ||
1775fd3e DQ |
2751 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2752 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2753 | { |
2754 | struct nfs4_exception exception = { }; | |
2755 | int err; | |
2756 | do { | |
2757 | err = nfs4_handle_exception(server, | |
1775fd3e | 2758 | _nfs4_proc_getattr(server, fhandle, fattr, label), |
1da177e4 LT |
2759 | &exception); |
2760 | } while (exception.retry); | |
2761 | return err; | |
2762 | } | |
2763 | ||
2764 | /* | |
2765 | * The file is not closed if it is opened due to the a request to change | |
2766 | * the size of the file. The open call will not be needed once the | |
2767 | * VFS layer lookup-intents are implemented. | |
2768 | * | |
2769 | * Close is called when the inode is destroyed. | |
2770 | * If we haven't opened the file for O_WRONLY, we | |
2771 | * need to in the size_change case to obtain a stateid. | |
2772 | * | |
2773 | * Got race? | |
2774 | * Because OPEN is always done by name in nfsv4, it is | |
2775 | * possible that we opened a different file by the same | |
2776 | * name. We can recognize this race condition, but we | |
2777 | * can't do anything about it besides returning an error. | |
2778 | * | |
2779 | * This will be fixed with VFS changes (lookup-intent). | |
2780 | */ | |
2781 | static int | |
2782 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2783 | struct iattr *sattr) | |
2784 | { | |
08e9eac4 | 2785 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2786 | struct rpc_cred *cred = NULL; |
d530838b | 2787 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2788 | int status; |
2789 | ||
8a1636c4 | 2790 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2791 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2792 | |
0e574af1 | 2793 | nfs_fattr_init(fattr); |
1da177e4 | 2794 | |
2669940d AA |
2795 | /* Deal with open(O_TRUNC) */ |
2796 | if (sattr->ia_valid & ATTR_OPEN) | |
2797 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2798 | ||
2799 | /* Optimization: if the end result is no change, don't RPC */ | |
2800 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2801 | return 0; | |
2802 | ||
d530838b | 2803 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2804 | if (sattr->ia_valid & ATTR_FILE) { |
2805 | struct nfs_open_context *ctx; | |
2806 | ||
2807 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2808 | if (ctx) { |
2809 | cred = ctx->cred; | |
2810 | state = ctx->state; | |
2811 | } | |
659bfcd6 | 2812 | } |
08e9eac4 | 2813 | |
1775fd3e | 2814 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, NULL); |
65e4308d TM |
2815 | if (status == 0) |
2816 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2817 | return status; |
2818 | } | |
2819 | ||
0c2e53f1 TM |
2820 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2821 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 2822 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 2823 | { |
0c2e53f1 | 2824 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2825 | int status; |
2826 | struct nfs4_lookup_arg args = { | |
2827 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2828 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2829 | .name = name, |
2830 | }; | |
2831 | struct nfs4_lookup_res res = { | |
2832 | .server = server, | |
2833 | .fattr = fattr, | |
2834 | .fh = fhandle, | |
2835 | }; | |
2836 | struct rpc_message msg = { | |
2837 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2838 | .rpc_argp = &args, | |
2839 | .rpc_resp = &res, | |
2840 | }; | |
2841 | ||
2842 | nfs_fattr_init(fattr); | |
2843 | ||
1da177e4 | 2844 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2845 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2846 | dprintk("NFS reply lookup: %d\n", status); |
2847 | return status; | |
2848 | } | |
2849 | ||
72de53ec | 2850 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2851 | { |
7ebb9315 | 2852 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2853 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2854 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2855 | fattr->nlink = 2; | |
2856 | } | |
2857 | ||
72de53ec BS |
2858 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2859 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 2860 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
2861 | { |
2862 | struct nfs4_exception exception = { }; | |
72de53ec | 2863 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2864 | int err; |
2865 | do { | |
1775fd3e | 2866 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
72de53ec | 2867 | switch (err) { |
08ef7bd3 | 2868 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2869 | err = -ENOENT; |
2870 | goto out; | |
0c2e53f1 | 2871 | case -NFS4ERR_MOVED: |
f05d147f | 2872 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2873 | goto out; |
0c2e53f1 | 2874 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2875 | err = -EPERM; |
2876 | if (client != *clnt) | |
2877 | goto out; | |
2878 | ||
2879 | client = nfs4_create_sec_client(client, dir, name); | |
2880 | if (IS_ERR(client)) | |
2881 | return PTR_ERR(client); | |
2882 | ||
2883 | exception.retry = 1; | |
2884 | break; | |
2885 | default: | |
2886 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2887 | } |
1da177e4 | 2888 | } while (exception.retry); |
72de53ec BS |
2889 | |
2890 | out: | |
2891 | if (err == 0) | |
2892 | *clnt = client; | |
2893 | else if (client != *clnt) | |
2894 | rpc_shutdown_client(client); | |
2895 | ||
1da177e4 LT |
2896 | return err; |
2897 | } | |
2898 | ||
80a16b21 | 2899 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
2900 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
2901 | struct nfs4_label *label) | |
72de53ec BS |
2902 | { |
2903 | int status; | |
2904 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2905 | ||
1775fd3e | 2906 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
2907 | if (client != NFS_CLIENT(dir)) { |
2908 | rpc_shutdown_client(client); | |
2909 | nfs_fixup_secinfo_attributes(fattr); | |
2910 | } | |
2911 | return status; | |
2912 | } | |
2913 | ||
f05d147f BS |
2914 | struct rpc_clnt * |
2915 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2916 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2917 | { | |
2918 | int status; | |
2919 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2920 | ||
1775fd3e | 2921 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
f05d147f BS |
2922 | if (status < 0) { |
2923 | rpc_shutdown_client(client); | |
2924 | return ERR_PTR(status); | |
2925 | } | |
2926 | return client; | |
2927 | } | |
2928 | ||
1da177e4 LT |
2929 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2930 | { | |
76b32999 | 2931 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2932 | struct nfs4_accessargs args = { |
2933 | .fh = NFS_FH(inode), | |
a4980e78 | 2934 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2935 | }; |
2936 | struct nfs4_accessres res = { | |
2937 | .server = server, | |
1da177e4 | 2938 | }; |
1da177e4 LT |
2939 | struct rpc_message msg = { |
2940 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2941 | .rpc_argp = &args, | |
2942 | .rpc_resp = &res, | |
2943 | .rpc_cred = entry->cred, | |
2944 | }; | |
2945 | int mode = entry->mask; | |
2946 | int status; | |
2947 | ||
2948 | /* | |
2949 | * Determine which access bits we want to ask for... | |
2950 | */ | |
2951 | if (mode & MAY_READ) | |
2952 | args.access |= NFS4_ACCESS_READ; | |
2953 | if (S_ISDIR(inode->i_mode)) { | |
2954 | if (mode & MAY_WRITE) | |
2955 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2956 | if (mode & MAY_EXEC) | |
2957 | args.access |= NFS4_ACCESS_LOOKUP; | |
2958 | } else { | |
2959 | if (mode & MAY_WRITE) | |
2960 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2961 | if (mode & MAY_EXEC) | |
2962 | args.access |= NFS4_ACCESS_EXECUTE; | |
2963 | } | |
c407d41a TM |
2964 | |
2965 | res.fattr = nfs_alloc_fattr(); | |
2966 | if (res.fattr == NULL) | |
2967 | return -ENOMEM; | |
2968 | ||
7c513058 | 2969 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2970 | if (!status) { |
6168f62c | 2971 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2972 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2973 | } |
c407d41a | 2974 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2975 | return status; |
2976 | } | |
2977 | ||
2978 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2979 | { | |
2980 | struct nfs4_exception exception = { }; | |
2981 | int err; | |
2982 | do { | |
2983 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2984 | _nfs4_proc_access(inode, entry), | |
2985 | &exception); | |
2986 | } while (exception.retry); | |
2987 | return err; | |
2988 | } | |
2989 | ||
2990 | /* | |
2991 | * TODO: For the time being, we don't try to get any attributes | |
2992 | * along with any of the zero-copy operations READ, READDIR, | |
2993 | * READLINK, WRITE. | |
2994 | * | |
2995 | * In the case of the first three, we want to put the GETATTR | |
2996 | * after the read-type operation -- this is because it is hard | |
2997 | * to predict the length of a GETATTR response in v4, and thus | |
2998 | * align the READ data correctly. This means that the GETATTR | |
2999 | * may end up partially falling into the page cache, and we should | |
3000 | * shift it into the 'tail' of the xdr_buf before processing. | |
3001 | * To do this efficiently, we need to know the total length | |
3002 | * of data received, which doesn't seem to be available outside | |
3003 | * of the RPC layer. | |
3004 | * | |
3005 | * In the case of WRITE, we also want to put the GETATTR after | |
3006 | * the operation -- in this case because we want to make sure | |
140150db | 3007 | * we get the post-operation mtime and size. |
1da177e4 LT |
3008 | * |
3009 | * Both of these changes to the XDR layer would in fact be quite | |
3010 | * minor, but I decided to leave them for a subsequent patch. | |
3011 | */ | |
3012 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3013 | unsigned int pgbase, unsigned int pglen) | |
3014 | { | |
3015 | struct nfs4_readlink args = { | |
3016 | .fh = NFS_FH(inode), | |
3017 | .pgbase = pgbase, | |
3018 | .pglen = pglen, | |
3019 | .pages = &page, | |
3020 | }; | |
f50c7000 | 3021 | struct nfs4_readlink_res res; |
1da177e4 LT |
3022 | struct rpc_message msg = { |
3023 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3024 | .rpc_argp = &args, | |
f50c7000 | 3025 | .rpc_resp = &res, |
1da177e4 LT |
3026 | }; |
3027 | ||
7c513058 | 3028 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3029 | } |
3030 | ||
3031 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3032 | unsigned int pgbase, unsigned int pglen) | |
3033 | { | |
3034 | struct nfs4_exception exception = { }; | |
3035 | int err; | |
3036 | do { | |
3037 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3038 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
3039 | &exception); | |
3040 | } while (exception.retry); | |
3041 | return err; | |
3042 | } | |
3043 | ||
1da177e4 | 3044 | /* |
8867fe58 | 3045 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3046 | */ |
1da177e4 LT |
3047 | static int |
3048 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3049 | int flags) |
1da177e4 | 3050 | { |
1775fd3e | 3051 | struct nfs4_label *ilabel = NULL; |
8867fe58 | 3052 | struct nfs_open_context *ctx; |
1da177e4 | 3053 | struct nfs4_state *state; |
1da177e4 LT |
3054 | int status = 0; |
3055 | ||
8867fe58 MS |
3056 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3057 | if (IS_ERR(ctx)) | |
3058 | return PTR_ERR(ctx); | |
3059 | ||
a8a5da99 | 3060 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 | 3061 | state = nfs4_do_open(dir, dentry, ctx->mode, |
1775fd3e | 3062 | flags, sattr, ilabel, ctx->cred, |
8626e4a4 | 3063 | &ctx->mdsthreshold); |
d4d9cdcb | 3064 | d_drop(dentry); |
1da177e4 LT |
3065 | if (IS_ERR(state)) { |
3066 | status = PTR_ERR(state); | |
c0204fd2 | 3067 | goto out; |
1da177e4 | 3068 | } |
d4d9cdcb | 3069 | d_add(dentry, igrab(state->inode)); |
d75340cc | 3070 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 3071 | ctx->state = state; |
1da177e4 | 3072 | out: |
8867fe58 | 3073 | put_nfs_open_context(ctx); |
1da177e4 LT |
3074 | return status; |
3075 | } | |
3076 | ||
3077 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3078 | { | |
16e42959 | 3079 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3080 | struct nfs_removeargs args = { |
1da177e4 | 3081 | .fh = NFS_FH(dir), |
26fe5750 | 3082 | .name = *name, |
16e42959 | 3083 | }; |
4fdc17b2 | 3084 | struct nfs_removeres res = { |
16e42959 | 3085 | .server = server, |
1da177e4 | 3086 | }; |
1da177e4 | 3087 | struct rpc_message msg = { |
4fdc17b2 TM |
3088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3089 | .rpc_argp = &args, | |
3090 | .rpc_resp = &res, | |
1da177e4 | 3091 | }; |
778d2817 | 3092 | int status; |
1da177e4 | 3093 | |
7c513058 | 3094 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3095 | if (status == 0) |
16e42959 | 3096 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3097 | return status; |
3098 | } | |
3099 | ||
3100 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3101 | { | |
3102 | struct nfs4_exception exception = { }; | |
3103 | int err; | |
3104 | do { | |
3105 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3106 | _nfs4_proc_remove(dir, name), | |
3107 | &exception); | |
3108 | } while (exception.retry); | |
3109 | return err; | |
3110 | } | |
3111 | ||
e4eff1a6 | 3112 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3113 | { |
e4eff1a6 TM |
3114 | struct nfs_server *server = NFS_SERVER(dir); |
3115 | struct nfs_removeargs *args = msg->rpc_argp; | |
3116 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3117 | |
e4eff1a6 | 3118 | res->server = server; |
1da177e4 | 3119 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3120 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3121 | } |
3122 | ||
34e137cc BS |
3123 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3124 | { | |
d9afbd1b TM |
3125 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3126 | &data->args.seq_args, | |
3127 | &data->res.seq_res, | |
3128 | task); | |
1da177e4 LT |
3129 | } |
3130 | ||
e4eff1a6 | 3131 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3132 | { |
e4eff1a6 TM |
3133 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3134 | ||
14516c3a TM |
3135 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3136 | return 0; | |
9e33bed5 | 3137 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3138 | return 0; |
3139 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3140 | return 1; |
1da177e4 LT |
3141 | } |
3142 | ||
d3d4152a JL |
3143 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3144 | { | |
3145 | struct nfs_server *server = NFS_SERVER(dir); | |
3146 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3147 | struct nfs_renameres *res = msg->rpc_resp; | |
3148 | ||
3149 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3150 | res->server = server; |
9d12b216 | 3151 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3152 | } |
3153 | ||
c6bfa1a1 BS |
3154 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3155 | { | |
d9afbd1b TM |
3156 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3157 | &data->args.seq_args, | |
3158 | &data->res.seq_res, | |
3159 | task); | |
d3d4152a JL |
3160 | } |
3161 | ||
3162 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3163 | struct inode *new_dir) | |
3164 | { | |
3165 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3166 | ||
3167 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3168 | return 0; | |
3169 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3170 | return 0; | |
3171 | ||
3172 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3173 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3174 | return 1; |
3175 | } | |
3176 | ||
1da177e4 LT |
3177 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3178 | struct inode *new_dir, struct qstr *new_name) | |
3179 | { | |
6caf2c82 | 3180 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3181 | struct nfs_renameargs arg = { |
1da177e4 LT |
3182 | .old_dir = NFS_FH(old_dir), |
3183 | .new_dir = NFS_FH(new_dir), | |
3184 | .old_name = old_name, | |
3185 | .new_name = new_name, | |
6caf2c82 | 3186 | }; |
e8582a8b | 3187 | struct nfs_renameres res = { |
6caf2c82 | 3188 | .server = server, |
1da177e4 | 3189 | }; |
1da177e4 LT |
3190 | struct rpc_message msg = { |
3191 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3192 | .rpc_argp = &arg, | |
3193 | .rpc_resp = &res, | |
3194 | }; | |
011fff72 | 3195 | int status = -ENOMEM; |
1da177e4 | 3196 | |
7c513058 | 3197 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3198 | if (!status) { |
3199 | update_changeattr(old_dir, &res.old_cinfo); | |
3200 | update_changeattr(new_dir, &res.new_cinfo); | |
3201 | } | |
3202 | return status; | |
3203 | } | |
3204 | ||
3205 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3206 | struct inode *new_dir, struct qstr *new_name) | |
3207 | { | |
3208 | struct nfs4_exception exception = { }; | |
3209 | int err; | |
3210 | do { | |
3211 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3212 | _nfs4_proc_rename(old_dir, old_name, | |
3213 | new_dir, new_name), | |
3214 | &exception); | |
3215 | } while (exception.retry); | |
3216 | return err; | |
3217 | } | |
3218 | ||
3219 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3220 | { | |
91ba2eee | 3221 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3222 | struct nfs4_link_arg arg = { |
3223 | .fh = NFS_FH(inode), | |
3224 | .dir_fh = NFS_FH(dir), | |
3225 | .name = name, | |
91ba2eee TM |
3226 | .bitmask = server->attr_bitmask, |
3227 | }; | |
91ba2eee TM |
3228 | struct nfs4_link_res res = { |
3229 | .server = server, | |
1775fd3e | 3230 | .label = NULL, |
1da177e4 | 3231 | }; |
1da177e4 LT |
3232 | struct rpc_message msg = { |
3233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3234 | .rpc_argp = &arg, | |
91ba2eee | 3235 | .rpc_resp = &res, |
1da177e4 | 3236 | }; |
136f2627 TM |
3237 | int status = -ENOMEM; |
3238 | ||
3239 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3240 | if (res.fattr == NULL) |
136f2627 | 3241 | goto out; |
1da177e4 | 3242 | |
7c513058 | 3243 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3244 | if (!status) { |
3245 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3246 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3247 | } |
136f2627 | 3248 | out: |
136f2627 | 3249 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3250 | return status; |
3251 | } | |
3252 | ||
3253 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3254 | { | |
3255 | struct nfs4_exception exception = { }; | |
3256 | int err; | |
3257 | do { | |
3258 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3259 | _nfs4_proc_link(inode, dir, name), | |
3260 | &exception); | |
3261 | } while (exception.retry); | |
3262 | return err; | |
3263 | } | |
3264 | ||
57dc9a57 TM |
3265 | struct nfs4_createdata { |
3266 | struct rpc_message msg; | |
3267 | struct nfs4_create_arg arg; | |
3268 | struct nfs4_create_res res; | |
3269 | struct nfs_fh fh; | |
3270 | struct nfs_fattr fattr; | |
1775fd3e | 3271 | struct nfs4_label *label; |
57dc9a57 TM |
3272 | }; |
3273 | ||
3274 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3275 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3276 | { | |
3277 | struct nfs4_createdata *data; | |
3278 | ||
3279 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3280 | if (data != NULL) { | |
3281 | struct nfs_server *server = NFS_SERVER(dir); | |
3282 | ||
3283 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3284 | data->msg.rpc_argp = &data->arg; | |
3285 | data->msg.rpc_resp = &data->res; | |
3286 | data->arg.dir_fh = NFS_FH(dir); | |
3287 | data->arg.server = server; | |
3288 | data->arg.name = name; | |
3289 | data->arg.attrs = sattr; | |
3290 | data->arg.ftype = ftype; | |
3291 | data->arg.bitmask = server->attr_bitmask; | |
3292 | data->res.server = server; | |
3293 | data->res.fh = &data->fh; | |
3294 | data->res.fattr = &data->fattr; | |
1775fd3e | 3295 | data->res.label = data->label; |
57dc9a57 | 3296 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3297 | } |
3298 | return data; | |
3299 | } | |
3300 | ||
3301 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3302 | { | |
7c513058 | 3303 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3304 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3305 | if (status == 0) { |
3306 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3307 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3308 | } |
3309 | return status; | |
3310 | } | |
3311 | ||
3312 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3313 | { | |
3314 | kfree(data); | |
3315 | } | |
3316 | ||
4f390c15 | 3317 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3318 | struct page *page, unsigned int len, struct iattr *sattr, |
3319 | struct nfs4_label *label) | |
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; | |
1775fd3e | 3335 | data->arg.label = label; |
1da177e4 | 3336 | |
57dc9a57 TM |
3337 | status = nfs4_do_create(dir, dentry, data); |
3338 | ||
3339 | nfs4_free_createdata(data); | |
3340 | out: | |
1da177e4 LT |
3341 | return status; |
3342 | } | |
3343 | ||
4f390c15 | 3344 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3345 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3346 | { |
3347 | struct nfs4_exception exception = { }; | |
1775fd3e | 3348 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3349 | int err; |
3350 | do { | |
3351 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 | 3352 | _nfs4_proc_symlink(dir, dentry, page, |
1775fd3e | 3353 | len, sattr, label), |
1da177e4 LT |
3354 | &exception); |
3355 | } while (exception.retry); | |
3356 | return err; | |
3357 | } | |
3358 | ||
3359 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3360 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3361 | { |
57dc9a57 TM |
3362 | struct nfs4_createdata *data; |
3363 | int status = -ENOMEM; | |
1da177e4 | 3364 | |
57dc9a57 TM |
3365 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3366 | if (data == NULL) | |
3367 | goto out; | |
3368 | ||
1775fd3e | 3369 | data->arg.label = label; |
57dc9a57 TM |
3370 | status = nfs4_do_create(dir, dentry, data); |
3371 | ||
3372 | nfs4_free_createdata(data); | |
3373 | out: | |
1da177e4 LT |
3374 | return status; |
3375 | } | |
3376 | ||
3377 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3378 | struct iattr *sattr) | |
3379 | { | |
3380 | struct nfs4_exception exception = { }; | |
1775fd3e | 3381 | struct nfs4_label *label = NULL; |
1da177e4 | 3382 | int err; |
a8a5da99 AK |
3383 | |
3384 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3385 | do { |
3386 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1775fd3e | 3387 | _nfs4_proc_mkdir(dir, dentry, sattr, label), |
1da177e4 LT |
3388 | &exception); |
3389 | } while (exception.retry); | |
3390 | return err; | |
3391 | } | |
3392 | ||
3393 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3394 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3395 | { |
3396 | struct inode *dir = dentry->d_inode; | |
3397 | struct nfs4_readdir_arg args = { | |
3398 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3399 | .pages = pages, |
1da177e4 LT |
3400 | .pgbase = 0, |
3401 | .count = count, | |
96d25e53 | 3402 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3403 | .plus = plus, |
1da177e4 LT |
3404 | }; |
3405 | struct nfs4_readdir_res res; | |
3406 | struct rpc_message msg = { | |
3407 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3408 | .rpc_argp = &args, | |
3409 | .rpc_resp = &res, | |
3410 | .rpc_cred = cred, | |
3411 | }; | |
3412 | int status; | |
3413 | ||
3110ff80 | 3414 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3415 | dentry->d_parent->d_name.name, |
3416 | dentry->d_name.name, | |
3417 | (unsigned long long)cookie); | |
c3f52af3 | 3418 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3419 | res.pgbase = args.pgbase; |
7c513058 | 3420 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3421 | if (status >= 0) { |
c3f52af3 | 3422 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3423 | status += args.pgbase; |
3424 | } | |
c4812998 TM |
3425 | |
3426 | nfs_invalidate_atime(dir); | |
3427 | ||
3110ff80 | 3428 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3429 | return status; |
3430 | } | |
3431 | ||
3432 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3433 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3434 | { |
3435 | struct nfs4_exception exception = { }; | |
3436 | int err; | |
3437 | do { | |
3438 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3439 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3440 | pages, count, plus), |
1da177e4 LT |
3441 | &exception); |
3442 | } while (exception.retry); | |
3443 | return err; | |
3444 | } | |
3445 | ||
3446 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3447 | struct iattr *sattr, dev_t rdev) | |
3448 | { | |
57dc9a57 TM |
3449 | struct nfs4_createdata *data; |
3450 | int mode = sattr->ia_mode; | |
3451 | int status = -ENOMEM; | |
1da177e4 | 3452 | |
57dc9a57 TM |
3453 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3454 | if (data == NULL) | |
3455 | goto out; | |
3456 | ||
1da177e4 | 3457 | if (S_ISFIFO(mode)) |
57dc9a57 | 3458 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3459 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3460 | data->arg.ftype = NF4BLK; |
3461 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3462 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3463 | } |
3464 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3465 | data->arg.ftype = NF4CHR; |
3466 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3467 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3468 | } else if (!S_ISSOCK(mode)) { |
3469 | status = -EINVAL; | |
3470 | goto out_free; | |
1da177e4 | 3471 | } |
1775fd3e | 3472 | |
57dc9a57 | 3473 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3474 | out_free: |
57dc9a57 TM |
3475 | nfs4_free_createdata(data); |
3476 | out: | |
1da177e4 LT |
3477 | return status; |
3478 | } | |
3479 | ||
3480 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3481 | struct iattr *sattr, dev_t rdev) | |
3482 | { | |
3483 | struct nfs4_exception exception = { }; | |
3484 | int err; | |
a8a5da99 AK |
3485 | |
3486 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3487 | do { |
3488 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3489 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3490 | &exception); | |
3491 | } while (exception.retry); | |
3492 | return err; | |
3493 | } | |
3494 | ||
3495 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3496 | struct nfs_fsstat *fsstat) | |
3497 | { | |
3498 | struct nfs4_statfs_arg args = { | |
3499 | .fh = fhandle, | |
3500 | .bitmask = server->attr_bitmask, | |
3501 | }; | |
24ad148a BH |
3502 | struct nfs4_statfs_res res = { |
3503 | .fsstat = fsstat, | |
3504 | }; | |
1da177e4 LT |
3505 | struct rpc_message msg = { |
3506 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3507 | .rpc_argp = &args, | |
24ad148a | 3508 | .rpc_resp = &res, |
1da177e4 LT |
3509 | }; |
3510 | ||
0e574af1 | 3511 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3512 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3513 | } |
3514 | ||
3515 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3516 | { | |
3517 | struct nfs4_exception exception = { }; | |
3518 | int err; | |
3519 | do { | |
3520 | err = nfs4_handle_exception(server, | |
3521 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3522 | &exception); | |
3523 | } while (exception.retry); | |
3524 | return err; | |
3525 | } | |
3526 | ||
3527 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3528 | struct nfs_fsinfo *fsinfo) | |
3529 | { | |
3530 | struct nfs4_fsinfo_arg args = { | |
3531 | .fh = fhandle, | |
3532 | .bitmask = server->attr_bitmask, | |
3533 | }; | |
3dda5e43 BH |
3534 | struct nfs4_fsinfo_res res = { |
3535 | .fsinfo = fsinfo, | |
3536 | }; | |
1da177e4 LT |
3537 | struct rpc_message msg = { |
3538 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3539 | .rpc_argp = &args, | |
3dda5e43 | 3540 | .rpc_resp = &res, |
1da177e4 LT |
3541 | }; |
3542 | ||
7c513058 | 3543 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3544 | } |
3545 | ||
3546 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3547 | { | |
3548 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3549 | unsigned long now = jiffies; |
1da177e4 LT |
3550 | int err; |
3551 | ||
3552 | do { | |
83ca7f5a CL |
3553 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
3554 | if (err == 0) { | |
3555 | struct nfs_client *clp = server->nfs_client; | |
3556 | ||
3557 | spin_lock(&clp->cl_lock); | |
3558 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3559 | clp->cl_last_renewal = now; | |
3560 | spin_unlock(&clp->cl_lock); | |
3561 | break; | |
3562 | } | |
3563 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3564 | } while (exception.retry); |
3565 | return err; | |
3566 | } | |
3567 | ||
3568 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3569 | { | |
e38eb650 BS |
3570 | int error; |
3571 | ||
0e574af1 | 3572 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3573 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3574 | if (error == 0) { |
3575 | /* block layout checks this! */ | |
3576 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3577 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3578 | } |
e38eb650 BS |
3579 | |
3580 | return error; | |
1da177e4 LT |
3581 | } |
3582 | ||
3583 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3584 | struct nfs_pathconf *pathconf) | |
3585 | { | |
3586 | struct nfs4_pathconf_arg args = { | |
3587 | .fh = fhandle, | |
3588 | .bitmask = server->attr_bitmask, | |
3589 | }; | |
d45b2989 BH |
3590 | struct nfs4_pathconf_res res = { |
3591 | .pathconf = pathconf, | |
3592 | }; | |
1da177e4 LT |
3593 | struct rpc_message msg = { |
3594 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3595 | .rpc_argp = &args, | |
d45b2989 | 3596 | .rpc_resp = &res, |
1da177e4 LT |
3597 | }; |
3598 | ||
3599 | /* None of the pathconf attributes are mandatory to implement */ | |
3600 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3601 | memset(pathconf, 0, sizeof(*pathconf)); | |
3602 | return 0; | |
3603 | } | |
3604 | ||
0e574af1 | 3605 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3606 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3607 | } |
3608 | ||
3609 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3610 | struct nfs_pathconf *pathconf) | |
3611 | { | |
3612 | struct nfs4_exception exception = { }; | |
3613 | int err; | |
3614 | ||
3615 | do { | |
3616 | err = nfs4_handle_exception(server, | |
3617 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3618 | &exception); | |
3619 | } while (exception.retry); | |
3620 | return err; | |
3621 | } | |
3622 | ||
5521abfd | 3623 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3624 | const struct nfs_open_context *ctx, |
3625 | const struct nfs_lock_context *l_ctx, | |
3626 | fmode_t fmode) | |
3627 | { | |
3628 | const struct nfs_lockowner *lockowner = NULL; | |
3629 | ||
3630 | if (l_ctx != NULL) | |
3631 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3632 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3633 | } |
3634 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3635 | ||
5521abfd TM |
3636 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3637 | const struct nfs_open_context *ctx, | |
3638 | const struct nfs_lock_context *l_ctx, | |
3639 | fmode_t fmode) | |
3640 | { | |
3641 | nfs4_stateid current_stateid; | |
3642 | ||
3643 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3644 | return false; | |
3645 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3646 | } | |
3647 | ||
3648 | static bool nfs4_error_stateid_expired(int err) | |
3649 | { | |
3650 | switch (err) { | |
3651 | case -NFS4ERR_DELEG_REVOKED: | |
3652 | case -NFS4ERR_ADMIN_REVOKED: | |
3653 | case -NFS4ERR_BAD_STATEID: | |
3654 | case -NFS4ERR_STALE_STATEID: | |
3655 | case -NFS4ERR_OLD_STATEID: | |
3656 | case -NFS4ERR_OPENMODE: | |
3657 | case -NFS4ERR_EXPIRED: | |
3658 | return true; | |
3659 | } | |
3660 | return false; | |
3661 | } | |
3662 | ||
d20581aa BH |
3663 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3664 | { | |
cd841605 | 3665 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3666 | } |
3667 | ||
cbdabc7f | 3668 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3669 | { |
cd841605 | 3670 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3671 | |
9e33bed5 | 3672 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3673 | rpc_restart_call_prepare(task); |
ec06c096 | 3674 | return -EAGAIN; |
1da177e4 | 3675 | } |
8850df99 | 3676 | |
d20581aa | 3677 | __nfs4_read_done_cb(data); |
1da177e4 | 3678 | if (task->tk_status > 0) |
ec06c096 TM |
3679 | renew_lease(server, data->timestamp); |
3680 | return 0; | |
1da177e4 LT |
3681 | } |
3682 | ||
5521abfd TM |
3683 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3684 | struct nfs_readargs *args) | |
3685 | { | |
3686 | ||
3687 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3688 | nfs4_stateid_is_current(&args->stateid, | |
3689 | args->context, | |
3690 | args->lock_context, | |
3691 | FMODE_READ)) | |
3692 | return false; | |
3693 | rpc_restart_call_prepare(task); | |
3694 | return true; | |
3695 | } | |
3696 | ||
cbdabc7f AA |
3697 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3698 | { | |
3699 | ||
3700 | dprintk("--> %s\n", __func__); | |
3701 | ||
3702 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3703 | return -EAGAIN; | |
5521abfd TM |
3704 | if (nfs4_read_stateid_changed(task, &data->args)) |
3705 | return -EAGAIN; | |
d20581aa BH |
3706 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3707 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3708 | } |
3709 | ||
bdc7f021 | 3710 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3711 | { |
1da177e4 | 3712 | data->timestamp = jiffies; |
cbdabc7f | 3713 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3714 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3715 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3716 | } |
3717 | ||
ea7c3303 BS |
3718 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3719 | { | |
9b206149 | 3720 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3721 | &data->args.seq_args, |
3722 | &data->res.seq_res, | |
9b206149 TM |
3723 | task)) |
3724 | return; | |
3725 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3726 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3727 | } |
3728 | ||
b029bc9b | 3729 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3730 | { |
cd841605 | 3731 | struct inode *inode = data->header->inode; |
1da177e4 | 3732 | |
9e33bed5 | 3733 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3734 | rpc_restart_call_prepare(task); |
788e7a89 | 3735 | return -EAGAIN; |
1da177e4 | 3736 | } |
4f9838c7 | 3737 | if (task->tk_status >= 0) { |
1da177e4 | 3738 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3739 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3740 | } |
788e7a89 | 3741 | return 0; |
1da177e4 LT |
3742 | } |
3743 | ||
5521abfd TM |
3744 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3745 | struct nfs_writeargs *args) | |
3746 | { | |
3747 | ||
3748 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3749 | nfs4_stateid_is_current(&args->stateid, | |
3750 | args->context, | |
3751 | args->lock_context, | |
3752 | FMODE_WRITE)) | |
3753 | return false; | |
3754 | rpc_restart_call_prepare(task); | |
3755 | return true; | |
3756 | } | |
3757 | ||
b029bc9b FI |
3758 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3759 | { | |
3760 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3761 | return -EAGAIN; | |
5521abfd TM |
3762 | if (nfs4_write_stateid_changed(task, &data->args)) |
3763 | return -EAGAIN; | |
d20581aa BH |
3764 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3765 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3766 | } |
3767 | ||
5a37f851 TM |
3768 | static |
3769 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3770 | { |
5a37f851 TM |
3771 | const struct nfs_pgio_header *hdr = data->header; |
3772 | ||
3773 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3774 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3775 | return false; | |
3776 | /* Otherwise, request attributes if and only if we don't hold | |
3777 | * a delegation | |
3778 | */ | |
011e2a7f | 3779 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3780 | } |
a69aef14 | 3781 | |
bdc7f021 | 3782 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3783 | { |
cd841605 | 3784 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3785 | |
5a37f851 | 3786 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3787 | data->args.bitmask = NULL; |
3788 | data->res.fattr = NULL; | |
3789 | } else | |
3790 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3791 | |
b029bc9b FI |
3792 | if (!data->write_done_cb) |
3793 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3794 | data->res.server = server; |
1da177e4 LT |
3795 | data->timestamp = jiffies; |
3796 | ||
bdc7f021 | 3797 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3798 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3799 | } |
3800 | ||
c6cb80d0 BS |
3801 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3802 | { | |
9b206149 | 3803 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3804 | &data->args.seq_args, |
3805 | &data->res.seq_res, | |
9b206149 TM |
3806 | task)) |
3807 | return; | |
3808 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3809 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
3810 | } |
3811 | ||
0b7c0153 | 3812 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3813 | { |
d9afbd1b TM |
3814 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3815 | &data->args.seq_args, | |
3816 | &data->res.seq_res, | |
3817 | task); | |
1da177e4 LT |
3818 | } |
3819 | ||
0b7c0153 | 3820 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3821 | { |
1da177e4 | 3822 | struct inode *inode = data->inode; |
14516c3a | 3823 | |
9e33bed5 | 3824 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3825 | rpc_restart_call_prepare(task); |
788e7a89 | 3826 | return -EAGAIN; |
1da177e4 | 3827 | } |
788e7a89 | 3828 | return 0; |
1da177e4 LT |
3829 | } |
3830 | ||
0b7c0153 | 3831 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3832 | { |
3833 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3834 | return -EAGAIN; | |
0b7c0153 | 3835 | return data->commit_done_cb(task, data); |
5f452431 FI |
3836 | } |
3837 | ||
0b7c0153 | 3838 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3839 | { |
788e7a89 | 3840 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3841 | |
0b7c0153 FI |
3842 | if (data->commit_done_cb == NULL) |
3843 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3844 | data->res.server = server; |
bdc7f021 | 3845 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3846 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3847 | } |
3848 | ||
9bc4e3ca CL |
3849 | struct nfs4_renewdata { |
3850 | struct nfs_client *client; | |
3851 | unsigned long timestamp; | |
3852 | }; | |
3853 | ||
1da177e4 LT |
3854 | /* |
3855 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3856 | * standalone procedure for queueing an asynchronous RENEW. | |
3857 | */ | |
9bc4e3ca | 3858 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3859 | { |
9bc4e3ca CL |
3860 | struct nfs4_renewdata *data = calldata; |
3861 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3862 | |
0851de06 AB |
3863 | if (atomic_read(&clp->cl_count) > 1) |
3864 | nfs4_schedule_state_renewal(clp); | |
3865 | nfs_put_client(clp); | |
9bc4e3ca | 3866 | kfree(data); |
dc96aef9 AB |
3867 | } |
3868 | ||
9bc4e3ca | 3869 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3870 | { |
9bc4e3ca CL |
3871 | struct nfs4_renewdata *data = calldata; |
3872 | struct nfs_client *clp = data->client; | |
3873 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3874 | |
3875 | if (task->tk_status < 0) { | |
95baa25c | 3876 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3877 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3878 | return; | |
3879 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3880 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3881 | return; |
3882 | } | |
3883 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3884 | } |
452e9352 | 3885 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3886 | } |
3887 | ||
963d8fe5 TM |
3888 | static const struct rpc_call_ops nfs4_renew_ops = { |
3889 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3890 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3891 | }; |
3892 | ||
2f60ea6b | 3893 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3894 | { |
3895 | struct rpc_message msg = { | |
3896 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3897 | .rpc_argp = clp, | |
b4454fe1 | 3898 | .rpc_cred = cred, |
1da177e4 | 3899 | }; |
9bc4e3ca | 3900 | struct nfs4_renewdata *data; |
1da177e4 | 3901 | |
2f60ea6b TM |
3902 | if (renew_flags == 0) |
3903 | return 0; | |
0851de06 AB |
3904 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3905 | return -EIO; | |
b569ad34 | 3906 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3907 | if (data == NULL) |
3908 | return -ENOMEM; | |
3909 | data->client = clp; | |
3910 | data->timestamp = jiffies; | |
bc7a05ca | 3911 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 3912 | &nfs4_renew_ops, data); |
1da177e4 LT |
3913 | } |
3914 | ||
8534d4ec | 3915 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3916 | { |
3917 | struct rpc_message msg = { | |
3918 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3919 | .rpc_argp = clp, | |
b4454fe1 | 3920 | .rpc_cred = cred, |
1da177e4 LT |
3921 | }; |
3922 | unsigned long now = jiffies; | |
3923 | int status; | |
3924 | ||
bc7a05ca | 3925 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3926 | if (status < 0) |
3927 | return status; | |
452e9352 | 3928 | do_renew_lease(clp, now); |
1da177e4 LT |
3929 | return 0; |
3930 | } | |
3931 | ||
aa1870af BF |
3932 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3933 | { | |
3934 | return (server->caps & NFS_CAP_ACLS) | |
3935 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3936 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3937 | } | |
3938 | ||
21f498c2 TM |
3939 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3940 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3941 | * the stack. |
3942 | */ | |
21f498c2 | 3943 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3944 | |
e9e3d724 NH |
3945 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3946 | struct page **pages, unsigned int *pgbase) | |
3947 | { | |
3948 | struct page *newpage, **spages; | |
3949 | int rc = 0; | |
3950 | size_t len; | |
3951 | spages = pages; | |
3952 | ||
3953 | do { | |
21f498c2 | 3954 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3955 | newpage = alloc_page(GFP_KERNEL); |
3956 | ||
3957 | if (newpage == NULL) | |
3958 | goto unwind; | |
3959 | memcpy(page_address(newpage), buf, len); | |
3960 | buf += len; | |
3961 | buflen -= len; | |
3962 | *pages++ = newpage; | |
3963 | rc++; | |
3964 | } while (buflen != 0); | |
3965 | ||
3966 | return rc; | |
3967 | ||
3968 | unwind: | |
3969 | for(; rc > 0; rc--) | |
3970 | __free_page(spages[rc-1]); | |
3971 | return -ENOMEM; | |
3972 | } | |
3973 | ||
e50a1c2e BF |
3974 | struct nfs4_cached_acl { |
3975 | int cached; | |
3976 | size_t len; | |
3e9d4154 | 3977 | char data[0]; |
e50a1c2e BF |
3978 | }; |
3979 | ||
3980 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3981 | { | |
3982 | struct nfs_inode *nfsi = NFS_I(inode); | |
3983 | ||
3984 | spin_lock(&inode->i_lock); | |
3985 | kfree(nfsi->nfs4_acl); | |
3986 | nfsi->nfs4_acl = acl; | |
3987 | spin_unlock(&inode->i_lock); | |
3988 | } | |
3989 | ||
3990 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3991 | { | |
3992 | nfs4_set_cached_acl(inode, NULL); | |
3993 | } | |
3994 | ||
3995 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3996 | { | |
3997 | struct nfs_inode *nfsi = NFS_I(inode); | |
3998 | struct nfs4_cached_acl *acl; | |
3999 | int ret = -ENOENT; | |
4000 | ||
4001 | spin_lock(&inode->i_lock); | |
4002 | acl = nfsi->nfs4_acl; | |
4003 | if (acl == NULL) | |
4004 | goto out; | |
4005 | if (buf == NULL) /* user is just asking for length */ | |
4006 | goto out_len; | |
4007 | if (acl->cached == 0) | |
4008 | goto out; | |
4009 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4010 | if (acl->len > buflen) | |
4011 | goto out; | |
4012 | memcpy(buf, acl->data, acl->len); | |
4013 | out_len: | |
4014 | ret = acl->len; | |
4015 | out: | |
4016 | spin_unlock(&inode->i_lock); | |
4017 | return ret; | |
4018 | } | |
4019 | ||
5794d21e | 4020 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4021 | { |
4022 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4023 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4024 | |
1f1ea6c2 | 4025 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4026 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4027 | if (acl == NULL) |
4028 | goto out; | |
4029 | acl->cached = 1; | |
5794d21e | 4030 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4031 | } else { |
4032 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4033 | if (acl == NULL) | |
4034 | goto out; | |
4035 | acl->cached = 0; | |
4036 | } | |
4037 | acl->len = acl_len; | |
4038 | out: | |
4039 | nfs4_set_cached_acl(inode, acl); | |
4040 | } | |
4041 | ||
bf118a34 AA |
4042 | /* |
4043 | * The getxattr API returns the required buffer length when called with a | |
4044 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4045 | * the required buf. On a NULL buf, we send a page of data to the server | |
4046 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4047 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4048 | * the cache. If not so, we throw away the page, and cache the required | |
4049 | * length. The next getxattr call will then produce another round trip to | |
4050 | * the server, this time with the input buf of the required size. | |
4051 | */ | |
16b4289c | 4052 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4053 | { |
bf118a34 | 4054 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4055 | struct nfs_getaclargs args = { |
4056 | .fh = NFS_FH(inode), | |
4057 | .acl_pages = pages, | |
4058 | .acl_len = buflen, | |
4059 | }; | |
663c79b3 BH |
4060 | struct nfs_getaclres res = { |
4061 | .acl_len = buflen, | |
4062 | }; | |
aa1870af BF |
4063 | struct rpc_message msg = { |
4064 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4065 | .rpc_argp = &args, | |
663c79b3 | 4066 | .rpc_resp = &res, |
aa1870af | 4067 | }; |
21f498c2 TM |
4068 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4069 | int ret = -ENOMEM, i; | |
aa1870af | 4070 | |
bf118a34 AA |
4071 | /* As long as we're doing a round trip to the server anyway, |
4072 | * let's be prepared for a page of acl data. */ | |
4073 | if (npages == 0) | |
4074 | npages = 1; | |
21f498c2 TM |
4075 | if (npages > ARRAY_SIZE(pages)) |
4076 | return -ERANGE; | |
5a006899 | 4077 | |
bf118a34 AA |
4078 | for (i = 0; i < npages; i++) { |
4079 | pages[i] = alloc_page(GFP_KERNEL); | |
4080 | if (!pages[i]) | |
4081 | goto out_free; | |
e50a1c2e | 4082 | } |
5a006899 SP |
4083 | |
4084 | /* for decoding across pages */ | |
4085 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4086 | if (!res.acl_scratch) | |
4087 | goto out_free; | |
4088 | ||
bf118a34 AA |
4089 | args.acl_len = npages * PAGE_SIZE; |
4090 | args.acl_pgbase = 0; | |
5a006899 | 4091 | |
de040bec | 4092 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4093 | __func__, buf, buflen, npages, args.acl_len); |
4094 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4095 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4096 | if (ret) |
4097 | goto out_free; | |
bf118a34 | 4098 | |
1f1ea6c2 TM |
4099 | /* Handle the case where the passed-in buffer is too short */ |
4100 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4101 | /* Did the user only issue a request for the acl length? */ | |
4102 | if (buf == NULL) | |
4103 | goto out_ok; | |
e50a1c2e | 4104 | ret = -ERANGE; |
1f1ea6c2 | 4105 | goto out_free; |
e50a1c2e | 4106 | } |
1f1ea6c2 | 4107 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4108 | if (buf) { |
4109 | if (res.acl_len > buflen) { | |
4110 | ret = -ERANGE; | |
4111 | goto out_free; | |
4112 | } | |
1f1ea6c2 | 4113 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4114 | } |
1f1ea6c2 TM |
4115 | out_ok: |
4116 | ret = res.acl_len; | |
e50a1c2e | 4117 | out_free: |
bf118a34 AA |
4118 | for (i = 0; i < npages; i++) |
4119 | if (pages[i]) | |
4120 | __free_page(pages[i]); | |
331818f1 TM |
4121 | if (res.acl_scratch) |
4122 | __free_page(res.acl_scratch); | |
aa1870af BF |
4123 | return ret; |
4124 | } | |
4125 | ||
16b4289c TM |
4126 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4127 | { | |
4128 | struct nfs4_exception exception = { }; | |
4129 | ssize_t ret; | |
4130 | do { | |
4131 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4132 | if (ret >= 0) | |
4133 | break; | |
4134 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4135 | } while (exception.retry); | |
4136 | return ret; | |
4137 | } | |
4138 | ||
e50a1c2e BF |
4139 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4140 | { | |
4141 | struct nfs_server *server = NFS_SERVER(inode); | |
4142 | int ret; | |
4143 | ||
4144 | if (!nfs4_server_supports_acls(server)) | |
4145 | return -EOPNOTSUPP; | |
4146 | ret = nfs_revalidate_inode(server, inode); | |
4147 | if (ret < 0) | |
4148 | return ret; | |
08a22b39 AK |
4149 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4150 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4151 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4152 | if (ret != -ENOENT) | |
bf118a34 AA |
4153 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4154 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4155 | return ret; |
4156 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4157 | } | |
4158 | ||
16b4289c | 4159 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4160 | { |
4161 | struct nfs_server *server = NFS_SERVER(inode); | |
4162 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4163 | struct nfs_setaclargs arg = { | |
4164 | .fh = NFS_FH(inode), | |
4165 | .acl_pages = pages, | |
4166 | .acl_len = buflen, | |
4167 | }; | |
73c403a9 | 4168 | struct nfs_setaclres res; |
4b580ee3 BF |
4169 | struct rpc_message msg = { |
4170 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4171 | .rpc_argp = &arg, | |
73c403a9 | 4172 | .rpc_resp = &res, |
4b580ee3 | 4173 | }; |
21f498c2 | 4174 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4175 | int ret, i; |
4b580ee3 BF |
4176 | |
4177 | if (!nfs4_server_supports_acls(server)) | |
4178 | return -EOPNOTSUPP; | |
21f498c2 TM |
4179 | if (npages > ARRAY_SIZE(pages)) |
4180 | return -ERANGE; | |
e9e3d724 NH |
4181 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4182 | if (i < 0) | |
4183 | return i; | |
57ec14c5 | 4184 | nfs4_inode_return_delegation(inode); |
7c513058 | 4185 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4186 | |
4187 | /* | |
4188 | * Free each page after tx, so the only ref left is | |
4189 | * held by the network stack | |
4190 | */ | |
4191 | for (; i > 0; i--) | |
4192 | put_page(pages[i-1]); | |
4193 | ||
08a22b39 AK |
4194 | /* |
4195 | * Acl update can result in inode attribute update. | |
4196 | * so mark the attribute cache invalid. | |
4197 | */ | |
4198 | spin_lock(&inode->i_lock); | |
4199 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4200 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4201 | nfs_access_zap_cache(inode); |
4202 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4203 | return ret; |
4204 | } | |
4205 | ||
16b4289c TM |
4206 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4207 | { | |
4208 | struct nfs4_exception exception = { }; | |
4209 | int err; | |
4210 | do { | |
4211 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4212 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4213 | &exception); | |
4214 | } while (exception.retry); | |
4215 | return err; | |
4216 | } | |
4217 | ||
1da177e4 | 4218 | static int |
aa5190d0 | 4219 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4220 | { |
aa5190d0 TM |
4221 | struct nfs_client *clp = server->nfs_client; |
4222 | ||
4223 | if (task->tk_status >= 0) | |
1da177e4 LT |
4224 | return 0; |
4225 | switch(task->tk_status) { | |
a1d0b5ee | 4226 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4227 | case -NFS4ERR_ADMIN_REVOKED: |
4228 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4229 | if (state == NULL) |
4230 | break; | |
4231 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4232 | case -NFS4ERR_OPENMODE: |
4233 | if (state == NULL) | |
4234 | break; | |
5d422301 TM |
4235 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4236 | goto stateid_invalid; | |
0400a6b0 | 4237 | goto wait_on_recovery; |
0ced63d1 | 4238 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4239 | if (state != NULL) { |
4240 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4241 | goto stateid_invalid; | |
4242 | } | |
1da177e4 | 4243 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4244 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4245 | nfs4_schedule_lease_recovery(clp); |
4246 | goto wait_on_recovery; | |
4745e315 AA |
4247 | #if defined(CONFIG_NFS_V4_1) |
4248 | case -NFS4ERR_BADSESSION: | |
4249 | case -NFS4ERR_BADSLOT: | |
4250 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4251 | case -NFS4ERR_DEADSESSION: | |
4252 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4253 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4254 | case -NFS4ERR_SEQ_MISORDERED: | |
4255 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4256 | task->tk_status); | |
9f594791 | 4257 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4258 | task->tk_status = 0; |
4259 | return -EAGAIN; | |
4260 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4261 | case -NFS4ERR_DELAY: |
aa5190d0 | 4262 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4263 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4264 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4265 | task->tk_status = 0; | |
4266 | return -EAGAIN; | |
a8a4ae3a | 4267 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4268 | case -NFS4ERR_OLD_STATEID: |
4269 | task->tk_status = 0; | |
4270 | return -EAGAIN; | |
4271 | } | |
4272 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4273 | return 0; | |
5d422301 TM |
4274 | stateid_invalid: |
4275 | task->tk_status = -EIO; | |
4276 | return 0; | |
0400a6b0 | 4277 | wait_on_recovery: |
a2c0b9e2 | 4278 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4279 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4280 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4281 | task->tk_status = 0; | |
4282 | return -EAGAIN; | |
1da177e4 LT |
4283 | } |
4284 | ||
f092075d CL |
4285 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4286 | nfs4_verifier *bootverf) | |
cd93710e CL |
4287 | { |
4288 | __be32 verf[2]; | |
4289 | ||
2c820d9a CL |
4290 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4291 | /* An impossible timestamp guarantees this value | |
4292 | * will never match a generated boot time. */ | |
4293 | verf[0] = 0; | |
4294 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4295 | } else { | |
f092075d CL |
4296 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4297 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4298 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4299 | } |
cd93710e CL |
4300 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4301 | } | |
4302 | ||
e984a55a CL |
4303 | static unsigned int |
4304 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4305 | char *buf, size_t len) | |
4306 | { | |
4307 | unsigned int result; | |
4308 | ||
4309 | rcu_read_lock(); | |
4310 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4311 | clp->cl_ipaddr, | |
4312 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4313 | RPC_DISPLAY_ADDR), | |
4314 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4315 | RPC_DISPLAY_PROTO)); | |
4316 | rcu_read_unlock(); | |
4317 | return result; | |
4318 | } | |
4319 | ||
4320 | static unsigned int | |
4321 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4322 | char *buf, size_t len) | |
4323 | { | |
6f2ea7f2 CL |
4324 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4325 | ||
4326 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4327 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4328 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4329 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4330 | nodename); |
e984a55a CL |
4331 | } |
4332 | ||
6bbb4ae8 CL |
4333 | /** |
4334 | * nfs4_proc_setclientid - Negotiate client ID | |
4335 | * @clp: state data structure | |
4336 | * @program: RPC program for NFSv4 callback service | |
4337 | * @port: IP port number for NFS4 callback service | |
4338 | * @cred: RPC credential to use for this call | |
4339 | * @res: where to place the result | |
4340 | * | |
4341 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4342 | */ | |
bb8b27e5 TM |
4343 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4344 | unsigned short port, struct rpc_cred *cred, | |
4345 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4346 | { |
4347 | nfs4_verifier sc_verifier; | |
4348 | struct nfs4_setclientid setclientid = { | |
4349 | .sc_verifier = &sc_verifier, | |
4350 | .sc_prog = program, | |
f4eecd5d | 4351 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4352 | }; |
4353 | struct rpc_message msg = { | |
4354 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4355 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4356 | .rpc_resp = res, |
286d7d6a | 4357 | .rpc_cred = cred, |
1da177e4 | 4358 | }; |
6bbb4ae8 | 4359 | int status; |
1da177e4 | 4360 | |
de734831 | 4361 | /* nfs_client_id4 */ |
f092075d | 4362 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4363 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4364 | setclientid.sc_name_len = | |
4365 | nfs4_init_uniform_client_string(clp, | |
4366 | setclientid.sc_name, | |
4367 | sizeof(setclientid.sc_name)); | |
4368 | else | |
4369 | setclientid.sc_name_len = | |
4370 | nfs4_init_nonuniform_client_string(clp, | |
4371 | setclientid.sc_name, | |
4372 | sizeof(setclientid.sc_name)); | |
de734831 | 4373 | /* cb_client4 */ |
e984a55a | 4374 | rcu_read_lock(); |
de734831 | 4375 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4376 | sizeof(setclientid.sc_netid), |
4377 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4378 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4379 | rcu_read_unlock(); |
4380 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4381 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4382 | clp->cl_ipaddr, port >> 8, port & 255); |
4383 | ||
6bbb4ae8 CL |
4384 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4385 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4386 | setclientid.sc_name_len, setclientid.sc_name); | |
4387 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4388 | dprintk("NFS reply setclientid: %d\n", status); | |
4389 | return status; | |
1da177e4 LT |
4390 | } |
4391 | ||
6bbb4ae8 CL |
4392 | /** |
4393 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4394 | * @clp: state data structure | |
4395 | * @res: result of a previous SETCLIENTID | |
4396 | * @cred: RPC credential to use for this call | |
4397 | * | |
4398 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4399 | */ | |
fd954ae1 | 4400 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4401 | struct nfs4_setclientid_res *arg, |
4402 | struct rpc_cred *cred) | |
1da177e4 | 4403 | { |
1da177e4 LT |
4404 | struct rpc_message msg = { |
4405 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4406 | .rpc_argp = arg, |
286d7d6a | 4407 | .rpc_cred = cred, |
1da177e4 | 4408 | }; |
1da177e4 LT |
4409 | int status; |
4410 | ||
6bbb4ae8 CL |
4411 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4412 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4413 | clp->cl_clientid); | |
1bd714f2 | 4414 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
6bbb4ae8 | 4415 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4416 | return status; |
4417 | } | |
4418 | ||
fe650407 TM |
4419 | struct nfs4_delegreturndata { |
4420 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4421 | struct nfs4_delegreturnres res; |
fe650407 TM |
4422 | struct nfs_fh fh; |
4423 | nfs4_stateid stateid; | |
26e976a8 | 4424 | unsigned long timestamp; |
fa178f29 | 4425 | struct nfs_fattr fattr; |
fe650407 TM |
4426 | int rpc_status; |
4427 | }; | |
4428 | ||
fe650407 TM |
4429 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4430 | { | |
4431 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4432 | |
14516c3a TM |
4433 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4434 | return; | |
938e1010 | 4435 | |
79708861 RL |
4436 | switch (task->tk_status) { |
4437 | case -NFS4ERR_STALE_STATEID: | |
4438 | case -NFS4ERR_EXPIRED: | |
4439 | case 0: | |
fa178f29 | 4440 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4441 | break; |
4442 | default: | |
4443 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4444 | -EAGAIN) { | |
d00c5d43 | 4445 | rpc_restart_call_prepare(task); |
79708861 RL |
4446 | return; |
4447 | } | |
4448 | } | |
4449 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4450 | } |
4451 | ||
4452 | static void nfs4_delegreturn_release(void *calldata) | |
4453 | { | |
fe650407 TM |
4454 | kfree(calldata); |
4455 | } | |
4456 | ||
938e1010 AA |
4457 | #if defined(CONFIG_NFS_V4_1) |
4458 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4459 | { | |
4460 | struct nfs4_delegreturndata *d_data; | |
4461 | ||
4462 | d_data = (struct nfs4_delegreturndata *)data; | |
4463 | ||
d9afbd1b TM |
4464 | nfs4_setup_sequence(d_data->res.server, |
4465 | &d_data->args.seq_args, | |
4466 | &d_data->res.seq_res, | |
4467 | task); | |
938e1010 AA |
4468 | } |
4469 | #endif /* CONFIG_NFS_V4_1 */ | |
4470 | ||
c8d149f3 | 4471 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4472 | #if defined(CONFIG_NFS_V4_1) |
4473 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4474 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4475 | .rpc_call_done = nfs4_delegreturn_done, |
4476 | .rpc_release = nfs4_delegreturn_release, | |
4477 | }; | |
4478 | ||
e6f81075 | 4479 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4480 | { |
4481 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4482 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4483 | struct rpc_task *task; |
5138fde0 TM |
4484 | struct rpc_message msg = { |
4485 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4486 | .rpc_cred = cred, | |
4487 | }; | |
c970aa85 TM |
4488 | struct rpc_task_setup task_setup_data = { |
4489 | .rpc_client = server->client, | |
5138fde0 | 4490 | .rpc_message = &msg, |
c970aa85 TM |
4491 | .callback_ops = &nfs4_delegreturn_ops, |
4492 | .flags = RPC_TASK_ASYNC, | |
4493 | }; | |
e6f81075 | 4494 | int status = 0; |
fe650407 | 4495 | |
8535b2be | 4496 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4497 | if (data == NULL) |
4498 | return -ENOMEM; | |
9d12b216 | 4499 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4500 | data->args.fhandle = &data->fh; |
4501 | data->args.stateid = &data->stateid; | |
9e907fec | 4502 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4503 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4504 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4505 | data->res.fattr = &data->fattr; |
4506 | data->res.server = server; | |
5138fde0 | 4507 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4508 | data->timestamp = jiffies; |
fe650407 TM |
4509 | data->rpc_status = 0; |
4510 | ||
c970aa85 | 4511 | task_setup_data.callback_data = data; |
1174dd1f TM |
4512 | msg.rpc_argp = &data->args; |
4513 | msg.rpc_resp = &data->res; | |
c970aa85 | 4514 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4515 | if (IS_ERR(task)) |
fe650407 | 4516 | return PTR_ERR(task); |
e6f81075 TM |
4517 | if (!issync) |
4518 | goto out; | |
fe650407 | 4519 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4520 | if (status != 0) |
4521 | goto out; | |
4522 | status = data->rpc_status; | |
e144cbcc TM |
4523 | if (status == 0) |
4524 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4525 | else | |
4526 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4527 | out: |
e6b3c4db | 4528 | rpc_put_task(task); |
fe650407 | 4529 | return status; |
1da177e4 LT |
4530 | } |
4531 | ||
e6f81075 | 4532 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4533 | { |
4534 | struct nfs_server *server = NFS_SERVER(inode); | |
4535 | struct nfs4_exception exception = { }; | |
4536 | int err; | |
4537 | do { | |
e6f81075 | 4538 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4539 | switch (err) { |
4540 | case -NFS4ERR_STALE_STATEID: | |
4541 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4542 | case 0: |
4543 | return 0; | |
4544 | } | |
4545 | err = nfs4_handle_exception(server, err, &exception); | |
4546 | } while (exception.retry); | |
4547 | return err; | |
4548 | } | |
4549 | ||
4550 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4551 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4552 | ||
4553 | /* | |
4554 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4555 | */ | |
4556 | static unsigned long | |
4557 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4558 | { | |
d310310c | 4559 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4560 | timeout <<= 1; |
4561 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4562 | return NFS4_LOCK_MAXTIMEOUT; | |
4563 | return timeout; | |
4564 | } | |
4565 | ||
1da177e4 LT |
4566 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4567 | { | |
4568 | struct inode *inode = state->inode; | |
4569 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4570 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4571 | struct nfs_lockt_args arg = { |
1da177e4 | 4572 | .fh = NFS_FH(inode), |
911d1aaf | 4573 | .fl = request, |
1da177e4 | 4574 | }; |
911d1aaf TM |
4575 | struct nfs_lockt_res res = { |
4576 | .denied = request, | |
1da177e4 LT |
4577 | }; |
4578 | struct rpc_message msg = { | |
4579 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4580 | .rpc_argp = &arg, | |
4581 | .rpc_resp = &res, | |
4582 | .rpc_cred = state->owner->so_cred, | |
4583 | }; | |
1da177e4 LT |
4584 | struct nfs4_lock_state *lsp; |
4585 | int status; | |
4586 | ||
911d1aaf | 4587 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4588 | status = nfs4_set_lock_state(state, request); |
4589 | if (status != 0) | |
4590 | goto out; | |
4591 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4592 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4593 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4594 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4595 | switch (status) { |
4596 | case 0: | |
4597 | request->fl_type = F_UNLCK; | |
4598 | break; | |
4599 | case -NFS4ERR_DENIED: | |
4600 | status = 0; | |
1da177e4 | 4601 | } |
70cc6487 | 4602 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4603 | out: |
1da177e4 LT |
4604 | return status; |
4605 | } | |
4606 | ||
4607 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4608 | { | |
4609 | struct nfs4_exception exception = { }; | |
4610 | int err; | |
4611 | ||
4612 | do { | |
4613 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4614 | _nfs4_proc_getlk(state, cmd, request), | |
4615 | &exception); | |
4616 | } while (exception.retry); | |
4617 | return err; | |
4618 | } | |
4619 | ||
4620 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4621 | { | |
4622 | int res = 0; | |
4623 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4624 | case FL_POSIX: | |
4625 | res = posix_lock_file_wait(file, fl); | |
4626 | break; | |
4627 | case FL_FLOCK: | |
4628 | res = flock_lock_file_wait(file, fl); | |
4629 | break; | |
4630 | default: | |
4631 | BUG(); | |
4632 | } | |
1da177e4 LT |
4633 | return res; |
4634 | } | |
4635 | ||
faf5f49c | 4636 | struct nfs4_unlockdata { |
911d1aaf TM |
4637 | struct nfs_locku_args arg; |
4638 | struct nfs_locku_res res; | |
faf5f49c TM |
4639 | struct nfs4_lock_state *lsp; |
4640 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4641 | struct file_lock fl; |
4642 | const struct nfs_server *server; | |
26e976a8 | 4643 | unsigned long timestamp; |
faf5f49c TM |
4644 | }; |
4645 | ||
911d1aaf TM |
4646 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4647 | struct nfs_open_context *ctx, | |
4648 | struct nfs4_lock_state *lsp, | |
4649 | struct nfs_seqid *seqid) | |
4650 | { | |
4651 | struct nfs4_unlockdata *p; | |
4652 | struct inode *inode = lsp->ls_state->inode; | |
4653 | ||
8535b2be | 4654 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4655 | if (p == NULL) |
4656 | return NULL; | |
4657 | p->arg.fh = NFS_FH(inode); | |
4658 | p->arg.fl = &p->fl; | |
4659 | p->arg.seqid = seqid; | |
c1d51931 | 4660 | p->res.seqid = seqid; |
911d1aaf TM |
4661 | p->arg.stateid = &lsp->ls_stateid; |
4662 | p->lsp = lsp; | |
4663 | atomic_inc(&lsp->ls_count); | |
4664 | /* Ensure we don't close file until we're done freeing locks! */ | |
4665 | p->ctx = get_nfs_open_context(ctx); | |
4666 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4667 | p->server = NFS_SERVER(inode); | |
4668 | return p; | |
4669 | } | |
4670 | ||
06f814a3 | 4671 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4672 | { |
963d8fe5 | 4673 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4674 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4675 | nfs4_put_lock_state(calldata->lsp); |
4676 | put_nfs_open_context(calldata->ctx); | |
4677 | kfree(calldata); | |
faf5f49c TM |
4678 | } |
4679 | ||
963d8fe5 | 4680 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4681 | { |
963d8fe5 | 4682 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4683 | |
14516c3a TM |
4684 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4685 | return; | |
faf5f49c TM |
4686 | switch (task->tk_status) { |
4687 | case 0: | |
f597c537 TM |
4688 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4689 | &calldata->res.stateid); | |
26e976a8 | 4690 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4691 | break; |
9e33bed5 TM |
4692 | case -NFS4ERR_BAD_STATEID: |
4693 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4694 | case -NFS4ERR_STALE_STATEID: |
4695 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4696 | break; |
4697 | default: | |
9e33bed5 | 4698 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4699 | rpc_restart_call_prepare(task); |
faf5f49c | 4700 | } |
2b1bc308 | 4701 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4702 | } |
4703 | ||
4ce70ada | 4704 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4705 | { |
4ce70ada | 4706 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4707 | |
911d1aaf | 4708 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4709 | goto out_wait; |
795a88c9 | 4710 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4711 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4712 | goto out_no_action; |
faf5f49c | 4713 | } |
26e976a8 | 4714 | calldata->timestamp = jiffies; |
035168ab | 4715 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4716 | &calldata->arg.seq_args, |
2240a9e2 TM |
4717 | &calldata->res.seq_res, |
4718 | task) != 0) | |
4719 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4720 | return; |
4721 | out_no_action: | |
4722 | task->tk_action = NULL; | |
4723 | out_wait: | |
4724 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4725 | } |
4726 | ||
963d8fe5 | 4727 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4728 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4729 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4730 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4731 | }; |
4732 | ||
a5d16a4d TM |
4733 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4734 | struct nfs_open_context *ctx, | |
4735 | struct nfs4_lock_state *lsp, | |
4736 | struct nfs_seqid *seqid) | |
4737 | { | |
4738 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4739 | struct rpc_message msg = { |
4740 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4741 | .rpc_cred = ctx->cred, | |
4742 | }; | |
c970aa85 TM |
4743 | struct rpc_task_setup task_setup_data = { |
4744 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4745 | .rpc_message = &msg, |
c970aa85 | 4746 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4747 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4748 | .flags = RPC_TASK_ASYNC, |
4749 | }; | |
a5d16a4d | 4750 | |
137d6aca FF |
4751 | /* Ensure this is an unlock - when canceling a lock, the |
4752 | * canceled lock is passed in, and it won't be an unlock. | |
4753 | */ | |
4754 | fl->fl_type = F_UNLCK; | |
4755 | ||
a5d16a4d TM |
4756 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4757 | if (data == NULL) { | |
4758 | nfs_free_seqid(seqid); | |
4759 | return ERR_PTR(-ENOMEM); | |
4760 | } | |
4761 | ||
9d12b216 | 4762 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4763 | msg.rpc_argp = &data->arg; |
4764 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4765 | task_setup_data.callback_data = data; |
4766 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4767 | } |
4768 | ||
faf5f49c TM |
4769 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4770 | { | |
65b62a29 TM |
4771 | struct inode *inode = state->inode; |
4772 | struct nfs4_state_owner *sp = state->owner; | |
4773 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4774 | struct nfs_seqid *seqid; |
1da177e4 | 4775 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4776 | struct rpc_task *task; |
4777 | int status = 0; | |
536ff0f8 | 4778 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4779 | |
8d0a8a9d | 4780 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4781 | /* Unlock _before_ we do the RPC call */ |
4782 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4783 | /* Exclude nfs_delegation_claim_locks() */ |
4784 | mutex_lock(&sp->so_delegreturn_mutex); | |
4785 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4786 | down_read(&nfsi->rwsem); |
4787 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4788 | up_read(&nfsi->rwsem); | |
65b62a29 | 4789 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4790 | goto out; |
19e03c57 TM |
4791 | } |
4792 | up_read(&nfsi->rwsem); | |
65b62a29 | 4793 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4794 | if (status != 0) |
9b073574 TM |
4795 | goto out; |
4796 | /* Is this a delegated lock? */ | |
8d0a8a9d | 4797 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
4798 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
4799 | goto out; | |
8535b2be | 4800 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4801 | status = -ENOMEM; |
911d1aaf | 4802 | if (seqid == NULL) |
9b073574 | 4803 | goto out; |
cd3758e3 | 4804 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4805 | status = PTR_ERR(task); |
4806 | if (IS_ERR(task)) | |
9b073574 | 4807 | goto out; |
a5d16a4d | 4808 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4809 | rpc_put_task(task); |
9b073574 | 4810 | out: |
536ff0f8 | 4811 | request->fl_flags = fl_flags; |
1da177e4 LT |
4812 | return status; |
4813 | } | |
4814 | ||
a5d16a4d TM |
4815 | struct nfs4_lockdata { |
4816 | struct nfs_lock_args arg; | |
4817 | struct nfs_lock_res res; | |
4818 | struct nfs4_lock_state *lsp; | |
4819 | struct nfs_open_context *ctx; | |
4820 | struct file_lock fl; | |
26e976a8 | 4821 | unsigned long timestamp; |
a5d16a4d TM |
4822 | int rpc_status; |
4823 | int cancelled; | |
66179efe | 4824 | struct nfs_server *server; |
a5d16a4d TM |
4825 | }; |
4826 | ||
4827 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4828 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4829 | gfp_t gfp_mask) | |
1da177e4 | 4830 | { |
a5d16a4d TM |
4831 | struct nfs4_lockdata *p; |
4832 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4833 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4834 | |
8535b2be | 4835 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4836 | if (p == NULL) |
4837 | return NULL; | |
4838 | ||
4839 | p->arg.fh = NFS_FH(inode); | |
4840 | p->arg.fl = &p->fl; | |
8535b2be | 4841 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4842 | if (p->arg.open_seqid == NULL) |
4843 | goto out_free; | |
8535b2be | 4844 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4845 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4846 | goto out_free_seqid; |
a5d16a4d | 4847 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4848 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4849 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4850 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4851 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4852 | p->lsp = lsp; |
66179efe | 4853 | p->server = server; |
a5d16a4d TM |
4854 | atomic_inc(&lsp->ls_count); |
4855 | p->ctx = get_nfs_open_context(ctx); | |
4856 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4857 | return p; | |
2f74c0a0 TM |
4858 | out_free_seqid: |
4859 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4860 | out_free: |
4861 | kfree(p); | |
4862 | return NULL; | |
4863 | } | |
4864 | ||
4865 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4866 | { | |
4867 | struct nfs4_lockdata *data = calldata; | |
4868 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4869 | |
3110ff80 | 4870 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4871 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4872 | goto out_wait; |
a5d16a4d TM |
4873 | /* Do we need to do an open_to_lock_owner? */ |
4874 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4875 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4876 | goto out_release_lock_seqid; |
8fe72bac | 4877 | } |
8e472f33 | 4878 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 4879 | data->arg.new_lock_owner = 1; |
c1d51931 | 4880 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4881 | } else |
4882 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4883 | if (!nfs4_valid_open_stateid(state)) { |
4884 | data->rpc_status = -EBADF; | |
4885 | task->tk_action = NULL; | |
4886 | goto out_release_open_seqid; | |
4887 | } | |
26e976a8 | 4888 | data->timestamp = jiffies; |
035168ab TM |
4889 | if (nfs4_setup_sequence(data->server, |
4890 | &data->arg.seq_args, | |
2240a9e2 | 4891 | &data->res.seq_res, |
d9afbd1b | 4892 | task) == 0) |
66179efe | 4893 | return; |
5d422301 | 4894 | out_release_open_seqid: |
2240a9e2 TM |
4895 | nfs_release_seqid(data->arg.open_seqid); |
4896 | out_release_lock_seqid: | |
4897 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4898 | out_wait: |
4899 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4900 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4901 | } |
4902 | ||
a5d16a4d TM |
4903 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4904 | { | |
4905 | struct nfs4_lockdata *data = calldata; | |
4906 | ||
3110ff80 | 4907 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4908 | |
14516c3a TM |
4909 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4910 | return; | |
66179efe | 4911 | |
a5d16a4d | 4912 | data->rpc_status = task->tk_status; |
a5d16a4d | 4913 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4914 | if (data->rpc_status == 0) |
4915 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4916 | else | |
4917 | goto out; | |
4918 | } | |
4919 | if (data->rpc_status == 0) { | |
f597c537 | 4920 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4921 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4922 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4923 | } |
a5d16a4d | 4924 | out: |
3110ff80 | 4925 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4926 | } |
4927 | ||
4928 | static void nfs4_lock_release(void *calldata) | |
4929 | { | |
4930 | struct nfs4_lockdata *data = calldata; | |
4931 | ||
3110ff80 | 4932 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4933 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4934 | if (data->cancelled != 0) { |
4935 | struct rpc_task *task; | |
4936 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4937 | data->arg.lock_seqid); | |
4938 | if (!IS_ERR(task)) | |
bf294b41 | 4939 | rpc_put_task_async(task); |
3110ff80 | 4940 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4941 | } else |
4942 | nfs_free_seqid(data->arg.lock_seqid); | |
4943 | nfs4_put_lock_state(data->lsp); | |
4944 | put_nfs_open_context(data->ctx); | |
4945 | kfree(data); | |
3110ff80 | 4946 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4947 | } |
4948 | ||
4949 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4950 | .rpc_call_prepare = nfs4_lock_prepare, | |
4951 | .rpc_call_done = nfs4_lock_done, | |
4952 | .rpc_release = nfs4_lock_release, | |
4953 | }; | |
4954 | ||
2bee72a6 TM |
4955 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4956 | { | |
2bee72a6 TM |
4957 | switch (error) { |
4958 | case -NFS4ERR_ADMIN_REVOKED: | |
4959 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4960 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4961 | if (new_lock_owner != 0 || |
795a88c9 | 4962 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4963 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4964 | break; |
4965 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4966 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4967 | case -NFS4ERR_EXPIRED: |
4968 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4969 | }; |
4970 | } | |
4971 | ||
afe6c27c | 4972 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4973 | { |
4974 | struct nfs4_lockdata *data; | |
4975 | struct rpc_task *task; | |
5138fde0 TM |
4976 | struct rpc_message msg = { |
4977 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4978 | .rpc_cred = state->owner->so_cred, | |
4979 | }; | |
c970aa85 TM |
4980 | struct rpc_task_setup task_setup_data = { |
4981 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4982 | .rpc_message = &msg, |
c970aa85 | 4983 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4984 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4985 | .flags = RPC_TASK_ASYNC, |
4986 | }; | |
a5d16a4d TM |
4987 | int ret; |
4988 | ||
3110ff80 | 4989 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4990 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4991 | fl->fl_u.nfs4_fl.owner, |
4992 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4993 | if (data == NULL) |
4994 | return -ENOMEM; | |
4995 | if (IS_SETLKW(cmd)) | |
4996 | data->arg.block = 1; | |
9d12b216 | 4997 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4998 | msg.rpc_argp = &data->arg; |
4999 | msg.rpc_resp = &data->res; | |
c970aa85 | 5000 | task_setup_data.callback_data = data; |
8fe72bac TM |
5001 | if (recovery_type > NFS_LOCK_NEW) { |
5002 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5003 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5004 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5005 | } | |
c970aa85 | 5006 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5007 | if (IS_ERR(task)) |
a5d16a4d | 5008 | return PTR_ERR(task); |
a5d16a4d TM |
5009 | ret = nfs4_wait_for_completion_rpc_task(task); |
5010 | if (ret == 0) { | |
5011 | ret = data->rpc_status; | |
2bee72a6 TM |
5012 | if (ret) |
5013 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5014 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5015 | } else |
5016 | data->cancelled = 1; | |
e6b3c4db | 5017 | rpc_put_task(task); |
3110ff80 | 5018 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5019 | return ret; |
1da177e4 LT |
5020 | } |
5021 | ||
5022 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5023 | { | |
202b50dc | 5024 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5025 | struct nfs4_exception exception = { |
5026 | .inode = state->inode, | |
5027 | }; | |
202b50dc TM |
5028 | int err; |
5029 | ||
5030 | do { | |
42a2d13e TM |
5031 | /* Cache the lock if possible... */ |
5032 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5033 | return 0; | |
afe6c27c | 5034 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5035 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5036 | break; |
5037 | nfs4_handle_exception(server, err, &exception); | |
5038 | } while (exception.retry); | |
5039 | return err; | |
1da177e4 LT |
5040 | } |
5041 | ||
5042 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5043 | { | |
202b50dc | 5044 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5045 | struct nfs4_exception exception = { |
5046 | .inode = state->inode, | |
5047 | }; | |
202b50dc TM |
5048 | int err; |
5049 | ||
6bfc93ef TM |
5050 | err = nfs4_set_lock_state(state, request); |
5051 | if (err != 0) | |
5052 | return err; | |
202b50dc | 5053 | do { |
42a2d13e TM |
5054 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5055 | return 0; | |
afe6c27c | 5056 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
5057 | switch (err) { |
5058 | default: | |
5059 | goto out; | |
5060 | case -NFS4ERR_GRACE: | |
5061 | case -NFS4ERR_DELAY: | |
5062 | nfs4_handle_exception(server, err, &exception); | |
5063 | err = 0; | |
5064 | } | |
202b50dc | 5065 | } while (exception.retry); |
a9ed2e25 | 5066 | out: |
202b50dc | 5067 | return err; |
1da177e4 LT |
5068 | } |
5069 | ||
f062eb6c | 5070 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5071 | /** |
5072 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5073 | * | |
5074 | * @state: NFSv4 state for an inode | |
5075 | * | |
5076 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5077 | * Otherwise a negative NFS4ERR value is returned. | |
5078 | */ | |
b01dd1d8 | 5079 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5080 | { |
eb64cf96 | 5081 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5082 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5083 | struct nfs_server *server = NFS_SERVER(state->inode); |
5084 | ||
b01dd1d8 | 5085 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5086 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
5087 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
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, | |
5093 | &lsp->ls_stateid); | |
795a88c9 | 5094 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5095 | ret = status; |
5096 | } | |
5097 | } | |
5098 | }; | |
5099 | ||
5100 | return ret; | |
5101 | } | |
5102 | ||
5103 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5104 | { | |
5105 | int status = NFS_OK; | |
5106 | ||
5107 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5108 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5109 | if (status != NFS_OK) |
5110 | status = nfs4_lock_expired(state, request); | |
5111 | return status; | |
f062eb6c BS |
5112 | } |
5113 | #endif | |
5114 | ||
1da177e4 LT |
5115 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5116 | { | |
9a99af49 | 5117 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5118 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5119 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5120 | unsigned int seq; |
8e469ebd | 5121 | int status = -ENOLCK; |
1da177e4 | 5122 | |
8e469ebd TM |
5123 | if ((fl_flags & FL_POSIX) && |
5124 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5125 | goto out; | |
6bfc93ef | 5126 | /* Is this a delegated open? */ |
6bfc93ef TM |
5127 | status = nfs4_set_lock_state(state, request); |
5128 | if (status != 0) | |
5129 | goto out; | |
01c3b861 TM |
5130 | request->fl_flags |= FL_ACCESS; |
5131 | status = do_vfs_lock(request->fl_file, request); | |
5132 | if (status < 0) | |
5133 | goto out; | |
19e03c57 | 5134 | down_read(&nfsi->rwsem); |
01c3b861 | 5135 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5136 | /* Yes: cache locks! */ |
01c3b861 | 5137 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5138 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5139 | status = do_vfs_lock(request->fl_file, request); | |
5140 | goto out_unlock; | |
01c3b861 | 5141 | } |
9a99af49 TM |
5142 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5143 | up_read(&nfsi->rwsem); | |
afe6c27c | 5144 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5145 | if (status != 0) |
9a99af49 TM |
5146 | goto out; |
5147 | down_read(&nfsi->rwsem); | |
5148 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5149 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5150 | goto out_unlock; |
9a99af49 | 5151 | } |
6bfc93ef | 5152 | /* Note: we always want to sleep here! */ |
01c3b861 | 5153 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5154 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5155 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5156 | "manager!\n", __func__); | |
01c3b861 | 5157 | out_unlock: |
19e03c57 | 5158 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5159 | out: |
5160 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5161 | return status; |
5162 | } | |
5163 | ||
5164 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5165 | { | |
a1d0b5ee TM |
5166 | struct nfs4_exception exception = { |
5167 | .state = state, | |
05ffe24f | 5168 | .inode = state->inode, |
a1d0b5ee | 5169 | }; |
1da177e4 LT |
5170 | int err; |
5171 | ||
5172 | do { | |
965b5d67 TM |
5173 | err = _nfs4_proc_setlk(state, cmd, request); |
5174 | if (err == -NFS4ERR_DENIED) | |
5175 | err = -EAGAIN; | |
1da177e4 | 5176 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5177 | err, &exception); |
1da177e4 LT |
5178 | } while (exception.retry); |
5179 | return err; | |
5180 | } | |
5181 | ||
5182 | static int | |
5183 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5184 | { | |
5185 | struct nfs_open_context *ctx; | |
5186 | struct nfs4_state *state; | |
5187 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5188 | int status; | |
5189 | ||
5190 | /* verify open state */ | |
cd3758e3 | 5191 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5192 | state = ctx->state; |
5193 | ||
5194 | if (request->fl_start < 0 || request->fl_end < 0) | |
5195 | return -EINVAL; | |
5196 | ||
d953126a TM |
5197 | if (IS_GETLK(cmd)) { |
5198 | if (state != NULL) | |
5199 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5200 | return 0; | |
5201 | } | |
1da177e4 LT |
5202 | |
5203 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5204 | return -EINVAL; | |
5205 | ||
d953126a TM |
5206 | if (request->fl_type == F_UNLCK) { |
5207 | if (state != NULL) | |
5208 | return nfs4_proc_unlck(state, cmd, request); | |
5209 | return 0; | |
5210 | } | |
1da177e4 | 5211 | |
d953126a TM |
5212 | if (state == NULL) |
5213 | return -ENOLCK; | |
55725513 TM |
5214 | /* |
5215 | * Don't rely on the VFS having checked the file open mode, | |
5216 | * since it won't do this for flock() locks. | |
5217 | */ | |
f44106e2 | 5218 | switch (request->fl_type) { |
55725513 TM |
5219 | case F_RDLCK: |
5220 | if (!(filp->f_mode & FMODE_READ)) | |
5221 | return -EBADF; | |
5222 | break; | |
5223 | case F_WRLCK: | |
5224 | if (!(filp->f_mode & FMODE_WRITE)) | |
5225 | return -EBADF; | |
5226 | } | |
5227 | ||
1da177e4 LT |
5228 | do { |
5229 | status = nfs4_proc_setlk(state, cmd, request); | |
5230 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5231 | break; | |
5232 | timeout = nfs4_set_lock_task_retry(timeout); | |
5233 | status = -ERESTARTSYS; | |
5234 | if (signalled()) | |
5235 | break; | |
5236 | } while(status < 0); | |
1da177e4 LT |
5237 | return status; |
5238 | } | |
5239 | ||
db4f2e63 | 5240 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5241 | { |
5242 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5243 | int err; |
5244 | ||
5245 | err = nfs4_set_lock_state(state, fl); | |
5246 | if (err != 0) | |
db4f2e63 | 5247 | return err; |
4a706fa0 | 5248 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5249 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5250 | } |
6b3b5496 | 5251 | |
cf470c3e TM |
5252 | struct nfs_release_lockowner_data { |
5253 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5254 | struct nfs_server *server; |
cf470c3e TM |
5255 | struct nfs_release_lockowner_args args; |
5256 | }; | |
5257 | ||
d3c7b7cc TM |
5258 | static void nfs4_release_lockowner_release(void *calldata) |
5259 | { | |
cf470c3e | 5260 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5261 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5262 | kfree(calldata); |
5263 | } | |
5264 | ||
17280175 | 5265 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5266 | .rpc_release = nfs4_release_lockowner_release, |
5267 | }; | |
5268 | ||
c8b2d0bf | 5269 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5270 | { |
cf470c3e | 5271 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5272 | struct rpc_message msg = { |
5273 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5274 | }; | |
5275 | ||
5276 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5277 | return -EINVAL; |
5278 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5279 | if (!data) | |
5280 | return -ENOMEM; | |
5281 | data->lsp = lsp; | |
5ae67c4f | 5282 | data->server = server; |
cf470c3e TM |
5283 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5284 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5285 | data->args.lock_owner.s_dev = server->s_dev; | |
5286 | msg.rpc_argp = &data->args; | |
5287 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5288 | return 0; | |
d3c7b7cc TM |
5289 | } |
5290 | ||
aa1870af BF |
5291 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5292 | ||
64c2ce8b AK |
5293 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5294 | const void *buf, size_t buflen, | |
5295 | int flags, int type) | |
6b3b5496 | 5296 | { |
64c2ce8b AK |
5297 | if (strcmp(key, "") != 0) |
5298 | return -EINVAL; | |
4b580ee3 | 5299 | |
64c2ce8b | 5300 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5301 | } |
5302 | ||
64c2ce8b AK |
5303 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5304 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5305 | { |
64c2ce8b AK |
5306 | if (strcmp(key, "") != 0) |
5307 | return -EINVAL; | |
aa1870af | 5308 | |
64c2ce8b | 5309 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5310 | } |
5311 | ||
64c2ce8b AK |
5312 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5313 | size_t list_len, const char *name, | |
5314 | size_t name_len, int type) | |
6b3b5496 | 5315 | { |
64c2ce8b | 5316 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5317 | |
096455a2 BF |
5318 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5319 | return 0; | |
64c2ce8b AK |
5320 | |
5321 | if (list && len <= list_len) | |
5322 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5323 | return len; |
6b3b5496 BF |
5324 | } |
5325 | ||
533eb461 AA |
5326 | /* |
5327 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5328 | */ | |
69aaaae1 TM |
5329 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5330 | { | |
533eb461 AA |
5331 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5332 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5333 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5334 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5335 | return; |
5336 | ||
5337 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5338 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5339 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5340 | fattr->nlink = 2; | |
5341 | } | |
5342 | ||
f05d147f BS |
5343 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5344 | const struct qstr *name, | |
5345 | struct nfs4_fs_locations *fs_locations, | |
5346 | struct page *page) | |
683b57b4 TM |
5347 | { |
5348 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5349 | u32 bitmask[3] = { |
361e624f | 5350 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5351 | }; |
5352 | struct nfs4_fs_locations_arg args = { | |
5353 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5354 | .name = name, |
683b57b4 TM |
5355 | .page = page, |
5356 | .bitmask = bitmask, | |
5357 | }; | |
22958463 BH |
5358 | struct nfs4_fs_locations_res res = { |
5359 | .fs_locations = fs_locations, | |
5360 | }; | |
683b57b4 TM |
5361 | struct rpc_message msg = { |
5362 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5363 | .rpc_argp = &args, | |
22958463 | 5364 | .rpc_resp = &res, |
683b57b4 TM |
5365 | }; |
5366 | int status; | |
5367 | ||
3110ff80 | 5368 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5369 | |
5370 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5371 | * is not supported */ | |
5372 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5373 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5374 | else | |
5375 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5376 | ||
c228fd3a | 5377 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5378 | fs_locations->server = server; |
830b8e33 | 5379 | fs_locations->nlocations = 0; |
f05d147f | 5380 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5381 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5382 | return status; |
5383 | } | |
5384 | ||
f05d147f BS |
5385 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5386 | const struct qstr *name, | |
5387 | struct nfs4_fs_locations *fs_locations, | |
5388 | struct page *page) | |
db0a9593 BS |
5389 | { |
5390 | struct nfs4_exception exception = { }; | |
5391 | int err; | |
5392 | do { | |
5393 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5394 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5395 | &exception); |
5396 | } while (exception.retry); | |
5397 | return err; | |
5398 | } | |
5399 | ||
5a5ea0d4 BS |
5400 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5401 | { | |
5402 | int status; | |
5403 | struct nfs4_secinfo_arg args = { | |
5404 | .dir_fh = NFS_FH(dir), | |
5405 | .name = name, | |
5406 | }; | |
5407 | struct nfs4_secinfo_res res = { | |
5408 | .flavors = flavors, | |
5409 | }; | |
5410 | struct rpc_message msg = { | |
5411 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5412 | .rpc_argp = &args, | |
5413 | .rpc_resp = &res, | |
5414 | }; | |
5415 | ||
5416 | dprintk("NFS call secinfo %s\n", name->name); | |
5417 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5418 | dprintk("NFS reply secinfo: %d\n", status); | |
5419 | return status; | |
5420 | } | |
5421 | ||
72de53ec BS |
5422 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5423 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5424 | { |
5425 | struct nfs4_exception exception = { }; | |
5426 | int err; | |
5427 | do { | |
5428 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5429 | _nfs4_proc_secinfo(dir, name, flavors), | |
5430 | &exception); | |
5431 | } while (exception.retry); | |
5432 | return err; | |
5433 | } | |
5434 | ||
557134a3 | 5435 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5436 | /* |
5437 | * Check the exchange flags returned by the server for invalid flags, having | |
5438 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5439 | * DS flags set. | |
5440 | */ | |
5441 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5442 | { | |
5443 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5444 | goto out_inval; | |
5445 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5446 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5447 | goto out_inval; | |
5448 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5449 | goto out_inval; | |
5450 | return NFS_OK; | |
5451 | out_inval: | |
5452 | return -NFS4ERR_INVAL; | |
5453 | } | |
5454 | ||
78fe0f41 | 5455 | static bool |
79d4e1f0 CL |
5456 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5457 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5458 | { |
5459 | if (a->server_scope_sz == b->server_scope_sz && | |
5460 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5461 | return true; | |
5462 | ||
5463 | return false; | |
5464 | } | |
5465 | ||
7c44f1ae WAA |
5466 | /* |
5467 | * nfs4_proc_bind_conn_to_session() | |
5468 | * | |
5469 | * The 4.1 client currently uses the same TCP connection for the | |
5470 | * fore and backchannel. | |
5471 | */ | |
2cf047c9 | 5472 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5473 | { |
5474 | int status; | |
5475 | struct nfs41_bind_conn_to_session_res res; | |
5476 | struct rpc_message msg = { | |
5477 | .rpc_proc = | |
5478 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5479 | .rpc_argp = clp, | |
5480 | .rpc_resp = &res, | |
2cf047c9 | 5481 | .rpc_cred = cred, |
7c44f1ae WAA |
5482 | }; |
5483 | ||
5484 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5485 | |
5486 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5487 | if (unlikely(res.session == NULL)) { | |
5488 | status = -ENOMEM; | |
5489 | goto out; | |
5490 | } | |
5491 | ||
5492 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5493 | if (status == 0) { | |
5494 | if (memcmp(res.session->sess_id.data, | |
5495 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5496 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5497 | status = -EIO; | |
5498 | goto out_session; | |
5499 | } | |
5500 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5501 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5502 | __func__); | |
5503 | status = -EIO; | |
5504 | goto out_session; | |
5505 | } | |
5506 | if (res.use_conn_in_rdma_mode) { | |
5507 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5508 | __func__); | |
5509 | status = -EIO; | |
5510 | goto out_session; | |
5511 | } | |
5512 | } | |
5513 | out_session: | |
5514 | kfree(res.session); | |
5515 | out: | |
5516 | dprintk("<-- %s status= %d\n", __func__, status); | |
5517 | return status; | |
5518 | } | |
5519 | ||
99fe60d0 BH |
5520 | /* |
5521 | * nfs4_proc_exchange_id() | |
5522 | * | |
6bbb4ae8 CL |
5523 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5524 | * | |
99fe60d0 BH |
5525 | * Since the clientid has expired, all compounds using sessions |
5526 | * associated with the stale clientid will be returning | |
5527 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5528 | * be in some phase of session reset. | |
5529 | */ | |
4d643d1d | 5530 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5531 | { |
5532 | nfs4_verifier verifier; | |
5533 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5534 | .verifier = &verifier, |
99fe60d0 | 5535 | .client = clp, |
357f54d6 | 5536 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5537 | }; |
5538 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5539 | 0 |
99fe60d0 BH |
5540 | }; |
5541 | int status; | |
5542 | struct rpc_message msg = { | |
5543 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5544 | .rpc_argp = &args, | |
5545 | .rpc_resp = &res, | |
5546 | .rpc_cred = cred, | |
5547 | }; | |
99fe60d0 | 5548 | |
f092075d | 5549 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5550 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5551 | sizeof(args.id)); | |
6bbb4ae8 CL |
5552 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5553 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5554 | args.id_len, args.id); | |
99fe60d0 | 5555 | |
acdeb69d | 5556 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5557 | GFP_NOFS); |
acdeb69d | 5558 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5559 | status = -ENOMEM; |
5560 | goto out; | |
5561 | } | |
78fe0f41 | 5562 | |
79d4e1f0 | 5563 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5564 | GFP_NOFS); |
177313f1 | 5565 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5566 | status = -ENOMEM; |
acdeb69d | 5567 | goto out_server_owner; |
abe9a6d5 | 5568 | } |
78fe0f41 | 5569 | |
bbafffd2 | 5570 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5571 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5572 | status = -ENOMEM; |
5573 | goto out_server_scope; | |
5574 | } | |
5575 | ||
1bd714f2 | 5576 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5577 | if (status == 0) |
32b01310 | 5578 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5579 | |
acdeb69d | 5580 | if (status == 0) { |
32b01310 TM |
5581 | clp->cl_clientid = res.clientid; |
5582 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5583 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5584 | clp->cl_seqid = res.seqid; | |
5585 | ||
acdeb69d CL |
5586 | kfree(clp->cl_serverowner); |
5587 | clp->cl_serverowner = res.server_owner; | |
5588 | res.server_owner = NULL; | |
78fe0f41 | 5589 | |
7d2ed9ac | 5590 | /* use the most recent implementation id */ |
59155546 CL |
5591 | kfree(clp->cl_implid); |
5592 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5593 | |
177313f1 | 5594 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5595 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5596 | res.server_scope)) { |
5597 | dprintk("%s: server_scope mismatch detected\n", | |
5598 | __func__); | |
5599 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5600 | kfree(clp->cl_serverscope); |
5601 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5602 | } |
5603 | ||
177313f1 | 5604 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5605 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5606 | goto out; |
5607 | } | |
32b01310 TM |
5608 | } else |
5609 | kfree(res.impl_id); | |
7d2ed9ac | 5610 | |
acdeb69d CL |
5611 | out_server_owner: |
5612 | kfree(res.server_owner); | |
7d2ed9ac | 5613 | out_server_scope: |
abe9a6d5 WAA |
5614 | kfree(res.server_scope); |
5615 | out: | |
177313f1 | 5616 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5617 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5618 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5619 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5620 | clp->cl_implid->date.seconds, |
5621 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5622 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5623 | return status; |
5624 | } | |
5625 | ||
66245539 TM |
5626 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5627 | struct rpc_cred *cred) | |
5628 | { | |
5629 | struct rpc_message msg = { | |
5630 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5631 | .rpc_argp = clp, | |
5632 | .rpc_cred = cred, | |
5633 | }; | |
5634 | int status; | |
5635 | ||
5636 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5637 | if (status) | |
02c67525 | 5638 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5639 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5640 | return status; | |
5641 | } | |
5642 | ||
5643 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5644 | struct rpc_cred *cred) | |
5645 | { | |
5646 | unsigned int loop; | |
5647 | int ret; | |
5648 | ||
5649 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5650 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5651 | switch (ret) { | |
5652 | case -NFS4ERR_DELAY: | |
5653 | case -NFS4ERR_CLIENTID_BUSY: | |
5654 | ssleep(1); | |
5655 | break; | |
5656 | default: | |
5657 | return ret; | |
5658 | } | |
5659 | } | |
5660 | return 0; | |
5661 | } | |
5662 | ||
5663 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5664 | { | |
5665 | struct rpc_cred *cred; | |
5666 | int ret = 0; | |
5667 | ||
5668 | if (clp->cl_mvops->minor_version < 1) | |
5669 | goto out; | |
5670 | if (clp->cl_exchange_flags == 0) | |
5671 | goto out; | |
05f4c350 CL |
5672 | if (clp->cl_preserve_clid) |
5673 | goto out; | |
66245539 TM |
5674 | cred = nfs4_get_exchange_id_cred(clp); |
5675 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5676 | if (cred) | |
5677 | put_rpccred(cred); | |
5678 | switch (ret) { | |
5679 | case 0: | |
5680 | case -NFS4ERR_STALE_CLIENTID: | |
5681 | clp->cl_exchange_flags = 0; | |
5682 | } | |
5683 | out: | |
5684 | return ret; | |
5685 | } | |
5686 | ||
2050f0cc AA |
5687 | struct nfs4_get_lease_time_data { |
5688 | struct nfs4_get_lease_time_args *args; | |
5689 | struct nfs4_get_lease_time_res *res; | |
5690 | struct nfs_client *clp; | |
5691 | }; | |
5692 | ||
5693 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5694 | void *calldata) | |
5695 | { | |
2050f0cc AA |
5696 | struct nfs4_get_lease_time_data *data = |
5697 | (struct nfs4_get_lease_time_data *)calldata; | |
5698 | ||
5699 | dprintk("--> %s\n", __func__); | |
5700 | /* just setup sequence, do not trigger session recovery | |
5701 | since we're invoked within one */ | |
d9afbd1b TM |
5702 | nfs41_setup_sequence(data->clp->cl_session, |
5703 | &data->args->la_seq_args, | |
5704 | &data->res->lr_seq_res, | |
5705 | task); | |
2050f0cc AA |
5706 | dprintk("<-- %s\n", __func__); |
5707 | } | |
5708 | ||
5709 | /* | |
5710 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5711 | * from sequence operation or clientid errors. | |
5712 | */ | |
5713 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5714 | { | |
5715 | struct nfs4_get_lease_time_data *data = | |
5716 | (struct nfs4_get_lease_time_data *)calldata; | |
5717 | ||
5718 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5719 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5720 | return; | |
2050f0cc AA |
5721 | switch (task->tk_status) { |
5722 | case -NFS4ERR_DELAY: | |
5723 | case -NFS4ERR_GRACE: | |
5724 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5725 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5726 | task->tk_status = 0; | |
a8a4ae3a AA |
5727 | /* fall through */ |
5728 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5729 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5730 | return; |
5731 | } | |
2050f0cc AA |
5732 | dprintk("<-- %s\n", __func__); |
5733 | } | |
5734 | ||
17280175 | 5735 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5736 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5737 | .rpc_call_done = nfs4_get_lease_time_done, | |
5738 | }; | |
5739 | ||
5740 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5741 | { | |
5742 | struct rpc_task *task; | |
5743 | struct nfs4_get_lease_time_args args; | |
5744 | struct nfs4_get_lease_time_res res = { | |
5745 | .lr_fsinfo = fsinfo, | |
5746 | }; | |
5747 | struct nfs4_get_lease_time_data data = { | |
5748 | .args = &args, | |
5749 | .res = &res, | |
5750 | .clp = clp, | |
5751 | }; | |
5752 | struct rpc_message msg = { | |
5753 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5754 | .rpc_argp = &args, | |
5755 | .rpc_resp = &res, | |
5756 | }; | |
5757 | struct rpc_task_setup task_setup = { | |
5758 | .rpc_client = clp->cl_rpcclient, | |
5759 | .rpc_message = &msg, | |
5760 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5761 | .callback_data = &data, |
5762 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5763 | }; |
5764 | int status; | |
5765 | ||
9d12b216 | 5766 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5767 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5768 | dprintk("--> %s\n", __func__); |
5769 | task = rpc_run_task(&task_setup); | |
5770 | ||
5771 | if (IS_ERR(task)) | |
5772 | status = PTR_ERR(task); | |
5773 | else { | |
5774 | status = task->tk_status; | |
5775 | rpc_put_task(task); | |
5776 | } | |
5777 | dprintk("<-- %s return %d\n", __func__, status); | |
5778 | ||
5779 | return status; | |
5780 | } | |
5781 | ||
fc931582 AA |
5782 | /* |
5783 | * Initialize the values to be used by the client in CREATE_SESSION | |
5784 | * If nfs4_init_session set the fore channel request and response sizes, | |
5785 | * use them. | |
5786 | * | |
5787 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5788 | * always set csa_cachethis to FALSE because the current implementation | |
5789 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5790 | */ | |
5791 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5792 | { | |
5793 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5794 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5795 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5796 | |
5797 | if (mxrqst_sz == 0) | |
5798 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5799 | if (mxresp_sz == 0) | |
5800 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5801 | /* Fore channel attributes */ | |
fc931582 AA |
5802 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5803 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5804 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5805 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5806 | |
5807 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5808 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5809 | __func__, |
5810 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5811 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5812 | |
5813 | /* Back channel attributes */ | |
fc931582 AA |
5814 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5815 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5816 | args->bc_attrs.max_resp_sz_cached = 0; | |
5817 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5818 | args->bc_attrs.max_reqs = 1; | |
5819 | ||
5820 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5821 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5822 | __func__, | |
5823 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5824 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5825 | args->bc_attrs.max_reqs); | |
5826 | } | |
5827 | ||
43c2e885 | 5828 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5829 | { |
43c2e885 BF |
5830 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5831 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5832 | ||
43c2e885 BF |
5833 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5834 | return -EINVAL; | |
5835 | /* | |
5836 | * Our requested max_ops is the minimum we need; we're not | |
5837 | * prepared to break up compounds into smaller pieces than that. | |
5838 | * So, no point even trying to continue if the server won't | |
5839 | * cooperate: | |
5840 | */ | |
5841 | if (rcvd->max_ops < sent->max_ops) | |
5842 | return -EINVAL; | |
5843 | if (rcvd->max_reqs == 0) | |
5844 | return -EINVAL; | |
b4b9a0c1 VG |
5845 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5846 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5847 | return 0; |
8d35301d AA |
5848 | } |
5849 | ||
43c2e885 BF |
5850 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5851 | { | |
5852 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5853 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5854 | |
43c2e885 BF |
5855 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5856 | return -EINVAL; | |
5857 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5858 | return -EINVAL; | |
5859 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5860 | return -EINVAL; | |
5861 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5862 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5863 | return -EINVAL; |
b4b9a0c1 | 5864 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5865 | return -EINVAL; |
5866 | return 0; | |
5867 | } | |
8d35301d | 5868 | |
8d35301d AA |
5869 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5870 | struct nfs4_session *session) | |
5871 | { | |
43c2e885 | 5872 | int ret; |
8d35301d | 5873 | |
43c2e885 BF |
5874 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5875 | if (ret) | |
5876 | return ret; | |
5877 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5878 | } |
5879 | ||
848f5bda TM |
5880 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5881 | struct rpc_cred *cred) | |
fc931582 AA |
5882 | { |
5883 | struct nfs4_session *session = clp->cl_session; | |
5884 | struct nfs41_create_session_args args = { | |
5885 | .client = clp, | |
5886 | .cb_program = NFS4_CALLBACK, | |
5887 | }; | |
5888 | struct nfs41_create_session_res res = { | |
5889 | .client = clp, | |
5890 | }; | |
5891 | struct rpc_message msg = { | |
5892 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5893 | .rpc_argp = &args, | |
5894 | .rpc_resp = &res, | |
848f5bda | 5895 | .rpc_cred = cred, |
fc931582 AA |
5896 | }; |
5897 | int status; | |
5898 | ||
5899 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5900 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5901 | |
1bd714f2 | 5902 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5903 | |
43095d39 | 5904 | if (!status) { |
8d35301d AA |
5905 | /* Verify the session's negotiated channel_attrs values */ |
5906 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5907 | /* Increment the clientid slot sequence id */ |
5908 | clp->cl_seqid++; | |
5909 | } | |
5910 | ||
5911 | return status; | |
5912 | } | |
5913 | ||
5914 | /* | |
5915 | * Issues a CREATE_SESSION operation to the server. | |
5916 | * It is the responsibility of the caller to verify the session is | |
5917 | * expired before calling this routine. | |
5918 | */ | |
848f5bda | 5919 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5920 | { |
5921 | int status; | |
5922 | unsigned *ptr; | |
fc931582 AA |
5923 | struct nfs4_session *session = clp->cl_session; |
5924 | ||
5925 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5926 | ||
848f5bda | 5927 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5928 | if (status) |
5929 | goto out; | |
5930 | ||
aacd5537 AA |
5931 | /* Init or reset the session slot tables */ |
5932 | status = nfs4_setup_session_slot_tables(session); | |
5933 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5934 | if (status) |
5935 | goto out; | |
5936 | ||
5937 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5938 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5939 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5940 | out: |
5941 | dprintk("<-- %s\n", __func__); | |
5942 | return status; | |
5943 | } | |
5944 | ||
0f3e66c6 AA |
5945 | /* |
5946 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5947 | * The caller must serialize access to this routine. | |
5948 | */ | |
848f5bda TM |
5949 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5950 | struct rpc_cred *cred) | |
0f3e66c6 | 5951 | { |
848f5bda TM |
5952 | struct rpc_message msg = { |
5953 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5954 | .rpc_argp = session, | |
5955 | .rpc_cred = cred, | |
5956 | }; | |
0f3e66c6 | 5957 | int status = 0; |
0f3e66c6 AA |
5958 | |
5959 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5960 | ||
5961 | /* session is still being setup */ | |
5962 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5963 | return status; | |
5964 | ||
1bd714f2 | 5965 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5966 | |
5967 | if (status) | |
08106ac7 | 5968 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5969 | "Session has been destroyed regardless...\n", status); |
5970 | ||
5971 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5972 | return status; | |
5973 | } | |
5974 | ||
fc01cea9 AA |
5975 | /* |
5976 | * Renew the cl_session lease. | |
5977 | */ | |
d5f8d3fe TM |
5978 | struct nfs4_sequence_data { |
5979 | struct nfs_client *clp; | |
5980 | struct nfs4_sequence_args args; | |
5981 | struct nfs4_sequence_res res; | |
5982 | }; | |
5983 | ||
dc96aef9 AB |
5984 | static void nfs41_sequence_release(void *data) |
5985 | { | |
d5f8d3fe TM |
5986 | struct nfs4_sequence_data *calldata = data; |
5987 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5988 | |
7135840f AB |
5989 | if (atomic_read(&clp->cl_count) > 1) |
5990 | nfs4_schedule_state_renewal(clp); | |
5991 | nfs_put_client(clp); | |
d5f8d3fe | 5992 | kfree(calldata); |
dc96aef9 AB |
5993 | } |
5994 | ||
aa5190d0 TM |
5995 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5996 | { | |
5997 | switch(task->tk_status) { | |
5998 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5999 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6000 | return -EAGAIN; | |
6001 | default: | |
0400a6b0 | 6002 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6003 | } |
6004 | return 0; | |
6005 | } | |
6006 | ||
dc96aef9 | 6007 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6008 | { |
d5f8d3fe TM |
6009 | struct nfs4_sequence_data *calldata = data; |
6010 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6011 | |
14516c3a TM |
6012 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6013 | return; | |
fc01cea9 AA |
6014 | |
6015 | if (task->tk_status < 0) { | |
6016 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6017 | if (atomic_read(&clp->cl_count) == 1) |
6018 | goto out; | |
fc01cea9 | 6019 | |
aa5190d0 TM |
6020 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6021 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6022 | return; |
6023 | } | |
6024 | } | |
fc01cea9 | 6025 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6026 | out: |
fc01cea9 AA |
6027 | dprintk("<-- %s\n", __func__); |
6028 | } | |
6029 | ||
6030 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6031 | { | |
d5f8d3fe TM |
6032 | struct nfs4_sequence_data *calldata = data; |
6033 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6034 | struct nfs4_sequence_args *args; |
6035 | struct nfs4_sequence_res *res; | |
6036 | ||
fc01cea9 AA |
6037 | args = task->tk_msg.rpc_argp; |
6038 | res = task->tk_msg.rpc_resp; | |
6039 | ||
d9afbd1b | 6040 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6041 | } |
6042 | ||
6043 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6044 | .rpc_call_done = nfs41_sequence_call_done, | |
6045 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6046 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6047 | }; |
6048 | ||
8fe72bac TM |
6049 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6050 | struct rpc_cred *cred, | |
6051 | bool is_privileged) | |
fc01cea9 | 6052 | { |
d5f8d3fe | 6053 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6054 | struct rpc_message msg = { |
6055 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6056 | .rpc_cred = cred, | |
6057 | }; | |
71ac6da9 TM |
6058 | struct rpc_task_setup task_setup_data = { |
6059 | .rpc_client = clp->cl_rpcclient, | |
6060 | .rpc_message = &msg, | |
8fe72bac | 6061 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6062 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6063 | }; |
fc01cea9 | 6064 | |
7135840f | 6065 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6066 | return ERR_PTR(-EIO); |
dfb4f309 | 6067 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6068 | if (calldata == NULL) { |
7135840f | 6069 | nfs_put_client(clp); |
71ac6da9 | 6070 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6071 | } |
9d12b216 | 6072 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6073 | if (is_privileged) |
6074 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6075 | msg.rpc_argp = &calldata->args; |
6076 | msg.rpc_resp = &calldata->res; | |
6077 | calldata->clp = clp; | |
71ac6da9 | 6078 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6079 | |
71ac6da9 TM |
6080 | return rpc_run_task(&task_setup_data); |
6081 | } | |
6082 | ||
2f60ea6b | 6083 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6084 | { |
6085 | struct rpc_task *task; | |
6086 | int ret = 0; | |
6087 | ||
2f60ea6b TM |
6088 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6089 | return 0; | |
8fe72bac | 6090 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6091 | if (IS_ERR(task)) |
6092 | ret = PTR_ERR(task); | |
6093 | else | |
bf294b41 | 6094 | rpc_put_task_async(task); |
71ac6da9 TM |
6095 | dprintk("<-- %s status=%d\n", __func__, ret); |
6096 | return ret; | |
6097 | } | |
6098 | ||
6099 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6100 | { | |
6101 | struct rpc_task *task; | |
6102 | int ret; | |
6103 | ||
8fe72bac | 6104 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6105 | if (IS_ERR(task)) { |
6106 | ret = PTR_ERR(task); | |
6107 | goto out; | |
6108 | } | |
6109 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6110 | if (!ret) { |
6111 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6112 | ||
6113 | if (task->tk_status == 0) | |
6114 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6115 | ret = task->tk_status; |
b4410c2f | 6116 | } |
71ac6da9 TM |
6117 | rpc_put_task(task); |
6118 | out: | |
6119 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6120 | return ret; | |
fc01cea9 AA |
6121 | } |
6122 | ||
fce5c838 RL |
6123 | struct nfs4_reclaim_complete_data { |
6124 | struct nfs_client *clp; | |
6125 | struct nfs41_reclaim_complete_args arg; | |
6126 | struct nfs41_reclaim_complete_res res; | |
6127 | }; | |
6128 | ||
6129 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6130 | { | |
6131 | struct nfs4_reclaim_complete_data *calldata = data; | |
6132 | ||
d9afbd1b TM |
6133 | nfs41_setup_sequence(calldata->clp->cl_session, |
6134 | &calldata->arg.seq_args, | |
6135 | &calldata->res.seq_res, | |
6136 | task); | |
fce5c838 RL |
6137 | } |
6138 | ||
aa5190d0 TM |
6139 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6140 | { | |
6141 | switch(task->tk_status) { | |
6142 | case 0: | |
6143 | case -NFS4ERR_COMPLETE_ALREADY: | |
6144 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6145 | break; | |
6146 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6147 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6148 | /* fall through */ |
6149 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6150 | return -EAGAIN; |
6151 | default: | |
0400a6b0 | 6152 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6153 | } |
6154 | return 0; | |
6155 | } | |
6156 | ||
fce5c838 RL |
6157 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6158 | { | |
6159 | struct nfs4_reclaim_complete_data *calldata = data; | |
6160 | struct nfs_client *clp = calldata->clp; | |
6161 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6162 | ||
6163 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6164 | if (!nfs41_sequence_done(task, res)) |
6165 | return; | |
fce5c838 | 6166 | |
aa5190d0 TM |
6167 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6168 | rpc_restart_call_prepare(task); | |
6169 | return; | |
6170 | } | |
fce5c838 RL |
6171 | dprintk("<-- %s\n", __func__); |
6172 | } | |
6173 | ||
6174 | static void nfs4_free_reclaim_complete_data(void *data) | |
6175 | { | |
6176 | struct nfs4_reclaim_complete_data *calldata = data; | |
6177 | ||
6178 | kfree(calldata); | |
6179 | } | |
6180 | ||
6181 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6182 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6183 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6184 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6185 | }; | |
6186 | ||
6187 | /* | |
6188 | * Issue a global reclaim complete. | |
6189 | */ | |
6190 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6191 | { | |
6192 | struct nfs4_reclaim_complete_data *calldata; | |
6193 | struct rpc_task *task; | |
6194 | struct rpc_message msg = { | |
6195 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6196 | }; | |
6197 | struct rpc_task_setup task_setup_data = { | |
6198 | .rpc_client = clp->cl_rpcclient, | |
6199 | .rpc_message = &msg, | |
6200 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6201 | .flags = RPC_TASK_ASYNC, | |
6202 | }; | |
6203 | int status = -ENOMEM; | |
6204 | ||
6205 | dprintk("--> %s\n", __func__); | |
8535b2be | 6206 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6207 | if (calldata == NULL) |
6208 | goto out; | |
6209 | calldata->clp = clp; | |
6210 | calldata->arg.one_fs = 0; | |
fce5c838 | 6211 | |
9d12b216 | 6212 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6213 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6214 | msg.rpc_argp = &calldata->arg; |
6215 | msg.rpc_resp = &calldata->res; | |
6216 | task_setup_data.callback_data = calldata; | |
6217 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6218 | if (IS_ERR(task)) { |
fce5c838 | 6219 | status = PTR_ERR(task); |
acf82b85 DC |
6220 | goto out; |
6221 | } | |
c34c32ea AA |
6222 | status = nfs4_wait_for_completion_rpc_task(task); |
6223 | if (status == 0) | |
6224 | status = task->tk_status; | |
fce5c838 | 6225 | rpc_put_task(task); |
acf82b85 | 6226 | return 0; |
fce5c838 RL |
6227 | out: |
6228 | dprintk("<-- %s status=%d\n", __func__, status); | |
6229 | return status; | |
6230 | } | |
b1f69b75 AA |
6231 | |
6232 | static void | |
6233 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6234 | { | |
6235 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6236 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6237 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6238 | |
6239 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6240 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6241 | * right now covering the LAYOUTGET we are about to send. | |
6242 | * However, that is not so catastrophic, and there seems | |
6243 | * to be no way to prevent it completely. | |
6244 | */ | |
6ba7db34 | 6245 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6246 | &lgp->res.seq_res, task)) |
b1f69b75 | 6247 | return; |
cf7d63f1 FI |
6248 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6249 | NFS_I(lgp->args.inode)->layout, | |
6250 | lgp->args.ctx->state)) { | |
6251 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6252 | } |
b1f69b75 AA |
6253 | } |
6254 | ||
6255 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6256 | { | |
6257 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6258 | struct inode *inode = lgp->args.inode; |
6259 | struct nfs_server *server = NFS_SERVER(inode); | |
6260 | struct pnfs_layout_hdr *lo; | |
6261 | struct nfs4_state *state = NULL; | |
30005121 | 6262 | unsigned long timeo, giveup; |
b1f69b75 AA |
6263 | |
6264 | dprintk("--> %s\n", __func__); | |
6265 | ||
6ba7db34 | 6266 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6267 | goto out; |
b1f69b75 AA |
6268 | |
6269 | switch (task->tk_status) { | |
6270 | case 0: | |
ee314c2a | 6271 | goto out; |
b1f69b75 AA |
6272 | case -NFS4ERR_LAYOUTTRYLATER: |
6273 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6274 | timeo = rpc_get_timeout(task->tk_client); |
6275 | giveup = lgp->args.timestamp + timeo; | |
6276 | if (time_after(giveup, jiffies)) | |
6277 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6278 | break; |
6279 | case -NFS4ERR_EXPIRED: | |
6280 | case -NFS4ERR_BAD_STATEID: | |
6281 | spin_lock(&inode->i_lock); | |
6282 | lo = NFS_I(inode)->layout; | |
6283 | if (!lo || list_empty(&lo->plh_segs)) { | |
6284 | spin_unlock(&inode->i_lock); | |
6285 | /* If the open stateid was bad, then recover it. */ | |
6286 | state = lgp->args.ctx->state; | |
6287 | } else { | |
6288 | LIST_HEAD(head); | |
6289 | ||
6290 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6291 | spin_unlock(&inode->i_lock); | |
6292 | /* Mark the bad layout state as invalid, then | |
6293 | * retry using the open stateid. */ | |
6294 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6295 | } |
6296 | } | |
ee314c2a TM |
6297 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6298 | rpc_restart_call_prepare(task); | |
6299 | out: | |
b1f69b75 AA |
6300 | dprintk("<-- %s\n", __func__); |
6301 | } | |
6302 | ||
8554116e IK |
6303 | static size_t max_response_pages(struct nfs_server *server) |
6304 | { | |
6305 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6306 | return nfs_page_array_len(0, max_resp_sz); | |
6307 | } | |
6308 | ||
6309 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6310 | { | |
6311 | int i; | |
6312 | ||
6313 | if (!pages) | |
6314 | return; | |
6315 | ||
6316 | for (i = 0; i < size; i++) { | |
6317 | if (!pages[i]) | |
6318 | break; | |
6319 | __free_page(pages[i]); | |
6320 | } | |
6321 | kfree(pages); | |
6322 | } | |
6323 | ||
6324 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6325 | { | |
6326 | struct page **pages; | |
6327 | int i; | |
6328 | ||
6329 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6330 | if (!pages) { | |
6331 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6332 | return NULL; | |
6333 | } | |
6334 | ||
6335 | for (i = 0; i < size; i++) { | |
6336 | pages[i] = alloc_page(gfp_flags); | |
6337 | if (!pages[i]) { | |
6338 | dprintk("%s: failed to allocate page\n", __func__); | |
6339 | nfs4_free_pages(pages, size); | |
6340 | return NULL; | |
6341 | } | |
6342 | } | |
6343 | ||
6344 | return pages; | |
6345 | } | |
6346 | ||
b1f69b75 AA |
6347 | static void nfs4_layoutget_release(void *calldata) |
6348 | { | |
6349 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6350 | struct inode *inode = lgp->args.inode; |
6351 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6352 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6353 | |
6354 | dprintk("--> %s\n", __func__); | |
8554116e | 6355 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6356 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6357 | put_nfs_open_context(lgp->args.ctx); |
6358 | kfree(calldata); | |
6359 | dprintk("<-- %s\n", __func__); | |
6360 | } | |
6361 | ||
6362 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6363 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6364 | .rpc_call_done = nfs4_layoutget_done, | |
6365 | .rpc_release = nfs4_layoutget_release, | |
6366 | }; | |
6367 | ||
a0b0a6e3 TM |
6368 | struct pnfs_layout_segment * |
6369 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6370 | { |
a47970ff WAA |
6371 | struct inode *inode = lgp->args.inode; |
6372 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6373 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6374 | struct rpc_task *task; |
6375 | struct rpc_message msg = { | |
6376 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6377 | .rpc_argp = &lgp->args, | |
6378 | .rpc_resp = &lgp->res, | |
6379 | }; | |
6380 | struct rpc_task_setup task_setup_data = { | |
6381 | .rpc_client = server->client, | |
6382 | .rpc_message = &msg, | |
6383 | .callback_ops = &nfs4_layoutget_call_ops, | |
6384 | .callback_data = lgp, | |
6385 | .flags = RPC_TASK_ASYNC, | |
6386 | }; | |
a0b0a6e3 | 6387 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6388 | int status = 0; |
6389 | ||
6390 | dprintk("--> %s\n", __func__); | |
6391 | ||
8554116e IK |
6392 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6393 | if (!lgp->args.layout.pages) { | |
6394 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6395 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6396 | } |
6397 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6398 | lgp->args.timestamp = jiffies; |
8554116e | 6399 | |
35124a09 | 6400 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6401 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6402 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6403 | |
6404 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6405 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6406 | ||
b1f69b75 AA |
6407 | task = rpc_run_task(&task_setup_data); |
6408 | if (IS_ERR(task)) | |
a0b0a6e3 | 6409 | return ERR_CAST(task); |
b1f69b75 | 6410 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6411 | if (status == 0) |
6412 | status = task->tk_status; | |
085b7a45 WAA |
6413 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6414 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6415 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6416 | rpc_put_task(task); |
6417 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6418 | if (status) |
6419 | return ERR_PTR(status); | |
6420 | return lseg; | |
b1f69b75 AA |
6421 | } |
6422 | ||
cbe82603 BH |
6423 | static void |
6424 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6425 | { | |
6426 | struct nfs4_layoutreturn *lrp = calldata; | |
6427 | ||
6428 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6429 | nfs41_setup_sequence(lrp->clp->cl_session, |
6430 | &lrp->args.seq_args, | |
6431 | &lrp->res.seq_res, | |
6432 | task); | |
cbe82603 BH |
6433 | } |
6434 | ||
6435 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6436 | { | |
6437 | struct nfs4_layoutreturn *lrp = calldata; | |
6438 | struct nfs_server *server; | |
6439 | ||
6440 | dprintk("--> %s\n", __func__); | |
6441 | ||
6ba7db34 | 6442 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6443 | return; |
6444 | ||
6445 | server = NFS_SERVER(lrp->args.inode); | |
6446 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6447 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6448 | return; |
6449 | } | |
cbe82603 BH |
6450 | dprintk("<-- %s\n", __func__); |
6451 | } | |
6452 | ||
6453 | static void nfs4_layoutreturn_release(void *calldata) | |
6454 | { | |
6455 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6456 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6457 | |
6458 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6459 | spin_lock(&lo->plh_inode->i_lock); |
6460 | if (lrp->res.lrs_present) | |
6461 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6462 | lo->plh_block_lgets--; | |
6463 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6464 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6465 | kfree(calldata); |
6466 | dprintk("<-- %s\n", __func__); | |
6467 | } | |
6468 | ||
6469 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6470 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6471 | .rpc_call_done = nfs4_layoutreturn_done, | |
6472 | .rpc_release = nfs4_layoutreturn_release, | |
6473 | }; | |
6474 | ||
6475 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6476 | { | |
6477 | struct rpc_task *task; | |
6478 | struct rpc_message msg = { | |
6479 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6480 | .rpc_argp = &lrp->args, | |
6481 | .rpc_resp = &lrp->res, | |
6482 | }; | |
6483 | struct rpc_task_setup task_setup_data = { | |
6484 | .rpc_client = lrp->clp->cl_rpcclient, | |
6485 | .rpc_message = &msg, | |
6486 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6487 | .callback_data = lrp, | |
6488 | }; | |
6489 | int status; | |
6490 | ||
6491 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6492 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6493 | task = rpc_run_task(&task_setup_data); |
6494 | if (IS_ERR(task)) | |
6495 | return PTR_ERR(task); | |
6496 | status = task->tk_status; | |
6497 | dprintk("<-- %s status=%d\n", __func__, status); | |
6498 | rpc_put_task(task); | |
6499 | return status; | |
6500 | } | |
6501 | ||
7f11d8d3 AA |
6502 | /* |
6503 | * Retrieve the list of Data Server devices from the MDS. | |
6504 | */ | |
6505 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6506 | const struct nfs_fh *fh, | |
6507 | struct pnfs_devicelist *devlist) | |
6508 | { | |
6509 | struct nfs4_getdevicelist_args args = { | |
6510 | .fh = fh, | |
6511 | .layoutclass = server->pnfs_curr_ld->id, | |
6512 | }; | |
6513 | struct nfs4_getdevicelist_res res = { | |
6514 | .devlist = devlist, | |
6515 | }; | |
6516 | struct rpc_message msg = { | |
6517 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6518 | .rpc_argp = &args, | |
6519 | .rpc_resp = &res, | |
6520 | }; | |
6521 | int status; | |
6522 | ||
6523 | dprintk("--> %s\n", __func__); | |
6524 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6525 | &res.seq_res, 0); | |
6526 | dprintk("<-- %s status=%d\n", __func__, status); | |
6527 | return status; | |
6528 | } | |
6529 | ||
6530 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6531 | const struct nfs_fh *fh, | |
6532 | struct pnfs_devicelist *devlist) | |
6533 | { | |
6534 | struct nfs4_exception exception = { }; | |
6535 | int err; | |
6536 | ||
6537 | do { | |
6538 | err = nfs4_handle_exception(server, | |
6539 | _nfs4_getdevicelist(server, fh, devlist), | |
6540 | &exception); | |
6541 | } while (exception.retry); | |
6542 | ||
6543 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6544 | err, devlist->num_devs); | |
6545 | ||
6546 | return err; | |
6547 | } | |
6548 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6549 | ||
b1f69b75 AA |
6550 | static int |
6551 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6552 | { | |
6553 | struct nfs4_getdeviceinfo_args args = { | |
6554 | .pdev = pdev, | |
6555 | }; | |
6556 | struct nfs4_getdeviceinfo_res res = { | |
6557 | .pdev = pdev, | |
6558 | }; | |
6559 | struct rpc_message msg = { | |
6560 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6561 | .rpc_argp = &args, | |
6562 | .rpc_resp = &res, | |
6563 | }; | |
6564 | int status; | |
6565 | ||
6566 | dprintk("--> %s\n", __func__); | |
7c513058 | 6567 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6568 | dprintk("<-- %s status=%d\n", __func__, status); |
6569 | ||
6570 | return status; | |
6571 | } | |
6572 | ||
6573 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6574 | { | |
6575 | struct nfs4_exception exception = { }; | |
6576 | int err; | |
6577 | ||
6578 | do { | |
6579 | err = nfs4_handle_exception(server, | |
6580 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6581 | &exception); | |
6582 | } while (exception.retry); | |
6583 | return err; | |
6584 | } | |
6585 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6586 | ||
863a3c6c AA |
6587 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6588 | { | |
6589 | struct nfs4_layoutcommit_data *data = calldata; | |
6590 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6591 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6592 | |
d9afbd1b TM |
6593 | nfs41_setup_sequence(session, |
6594 | &data->args.seq_args, | |
6595 | &data->res.seq_res, | |
6596 | task); | |
863a3c6c AA |
6597 | } |
6598 | ||
6599 | static void | |
6600 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6601 | { | |
6602 | struct nfs4_layoutcommit_data *data = calldata; | |
6603 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6604 | ||
6ba7db34 | 6605 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6606 | return; |
6607 | ||
6608 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6609 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6610 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6611 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6612 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6613 | task->tk_status = 0; |
e59d27e0 TM |
6614 | break; |
6615 | case 0: | |
863a3c6c AA |
6616 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6617 | data->res.fattr); | |
e59d27e0 TM |
6618 | break; |
6619 | default: | |
6620 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6621 | rpc_restart_call_prepare(task); | |
6622 | return; | |
6623 | } | |
6624 | } | |
863a3c6c AA |
6625 | } |
6626 | ||
6627 | static void nfs4_layoutcommit_release(void *calldata) | |
6628 | { | |
6629 | struct nfs4_layoutcommit_data *data = calldata; | |
6630 | ||
db29c089 | 6631 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6632 | put_rpccred(data->cred); |
6633 | kfree(data); | |
6634 | } | |
6635 | ||
6636 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6637 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6638 | .rpc_call_done = nfs4_layoutcommit_done, | |
6639 | .rpc_release = nfs4_layoutcommit_release, | |
6640 | }; | |
6641 | ||
6642 | int | |
ef311537 | 6643 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6644 | { |
6645 | struct rpc_message msg = { | |
6646 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6647 | .rpc_argp = &data->args, | |
6648 | .rpc_resp = &data->res, | |
6649 | .rpc_cred = data->cred, | |
6650 | }; | |
6651 | struct rpc_task_setup task_setup_data = { | |
6652 | .task = &data->task, | |
6653 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6654 | .rpc_message = &msg, | |
6655 | .callback_ops = &nfs4_layoutcommit_ops, | |
6656 | .callback_data = data, | |
6657 | .flags = RPC_TASK_ASYNC, | |
6658 | }; | |
6659 | struct rpc_task *task; | |
6660 | int status = 0; | |
6661 | ||
6662 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6663 | "lbw: %llu inode %lu\n", | |
6664 | data->task.tk_pid, sync, | |
6665 | data->args.lastbytewritten, | |
6666 | data->args.inode->i_ino); | |
6667 | ||
9d12b216 | 6668 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6669 | task = rpc_run_task(&task_setup_data); |
6670 | if (IS_ERR(task)) | |
6671 | return PTR_ERR(task); | |
ef311537 | 6672 | if (sync == false) |
863a3c6c AA |
6673 | goto out; |
6674 | status = nfs4_wait_for_completion_rpc_task(task); | |
6675 | if (status != 0) | |
6676 | goto out; | |
6677 | status = task->tk_status; | |
6678 | out: | |
6679 | dprintk("%s: status %d\n", __func__, status); | |
6680 | rpc_put_task(task); | |
6681 | return status; | |
6682 | } | |
fca78d6d BS |
6683 | |
6684 | static int | |
6685 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6686 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6687 | { | |
6688 | struct nfs41_secinfo_no_name_args args = { | |
6689 | .style = SECINFO_STYLE_CURRENT_FH, | |
6690 | }; | |
6691 | struct nfs4_secinfo_res res = { | |
6692 | .flavors = flavors, | |
6693 | }; | |
6694 | struct rpc_message msg = { | |
6695 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6696 | .rpc_argp = &args, | |
6697 | .rpc_resp = &res, | |
6698 | }; | |
6699 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6700 | } | |
6701 | ||
6702 | static int | |
6703 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6704 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6705 | { | |
6706 | struct nfs4_exception exception = { }; | |
6707 | int err; | |
6708 | do { | |
6709 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6710 | switch (err) { | |
6711 | case 0: | |
6712 | case -NFS4ERR_WRONGSEC: | |
6713 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6714 | goto out; |
fca78d6d BS |
6715 | default: |
6716 | err = nfs4_handle_exception(server, err, &exception); | |
6717 | } | |
6718 | } while (exception.retry); | |
05e9cfb4 | 6719 | out: |
fca78d6d BS |
6720 | return err; |
6721 | } | |
6722 | ||
6723 | static int | |
6724 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6725 | struct nfs_fsinfo *info) | |
6726 | { | |
6727 | int err; | |
6728 | struct page *page; | |
6729 | rpc_authflavor_t flavor; | |
6730 | struct nfs4_secinfo_flavors *flavors; | |
6731 | ||
6732 | page = alloc_page(GFP_KERNEL); | |
6733 | if (!page) { | |
6734 | err = -ENOMEM; | |
6735 | goto out; | |
6736 | } | |
6737 | ||
6738 | flavors = page_address(page); | |
6739 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6740 | ||
6741 | /* | |
6742 | * Fall back on "guess and check" method if | |
6743 | * the server doesn't support SECINFO_NO_NAME | |
6744 | */ | |
6745 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6746 | err = nfs4_find_root_sec(server, fhandle, info); | |
6747 | goto out_freepage; | |
6748 | } | |
6749 | if (err) | |
6750 | goto out_freepage; | |
6751 | ||
6752 | flavor = nfs_find_best_sec(flavors); | |
6753 | if (err == 0) | |
6754 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6755 | ||
6756 | out_freepage: | |
6757 | put_page(page); | |
6758 | if (err == -EACCES) | |
6759 | return -EPERM; | |
6760 | out: | |
6761 | return err; | |
6762 | } | |
1cab0652 BS |
6763 | |
6764 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6765 | { |
6766 | int status; | |
6767 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6768 | .stateid = stateid, |
7d974794 BS |
6769 | }; |
6770 | struct nfs41_test_stateid_res res; | |
6771 | struct rpc_message msg = { | |
6772 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6773 | .rpc_argp = &args, | |
6774 | .rpc_resp = &res, | |
6775 | }; | |
1cab0652 | 6776 | |
38527b15 | 6777 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6778 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6779 | nfs4_set_sequence_privileged(&args.seq_args); |
6780 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6781 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6782 | if (status != NFS_OK) { |
6783 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6784 | return status; |
38527b15 CL |
6785 | } |
6786 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6787 | return -res.status; |
7d974794 BS |
6788 | } |
6789 | ||
38527b15 CL |
6790 | /** |
6791 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6792 | * | |
6793 | * @server: server / transport on which to perform the operation | |
6794 | * @stateid: state ID to test | |
6795 | * | |
6796 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6797 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6798 | * failed or the state ID is not currently valid. | |
6799 | */ | |
1cab0652 | 6800 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6801 | { |
6802 | struct nfs4_exception exception = { }; | |
6803 | int err; | |
6804 | do { | |
377e507d CL |
6805 | err = _nfs41_test_stateid(server, stateid); |
6806 | if (err != -NFS4ERR_DELAY) | |
6807 | break; | |
6808 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6809 | } while (exception.retry); |
6810 | return err; | |
6811 | } | |
9aeda35f | 6812 | |
7c1d5fae TM |
6813 | struct nfs_free_stateid_data { |
6814 | struct nfs_server *server; | |
6815 | struct nfs41_free_stateid_args args; | |
9aeda35f | 6816 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
6817 | }; |
6818 | ||
6819 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
6820 | { | |
6821 | struct nfs_free_stateid_data *data = calldata; | |
6822 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
6823 | &data->args.seq_args, | |
6824 | &data->res.seq_res, | |
6825 | task); | |
6826 | } | |
6827 | ||
6828 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
6829 | { | |
6830 | struct nfs_free_stateid_data *data = calldata; | |
6831 | ||
6832 | nfs41_sequence_done(task, &data->res.seq_res); | |
6833 | ||
6834 | switch (task->tk_status) { | |
6835 | case -NFS4ERR_DELAY: | |
6836 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
6837 | rpc_restart_call_prepare(task); | |
6838 | } | |
6839 | } | |
6840 | ||
6841 | static void nfs41_free_stateid_release(void *calldata) | |
6842 | { | |
6843 | kfree(calldata); | |
6844 | } | |
6845 | ||
6846 | const struct rpc_call_ops nfs41_free_stateid_ops = { | |
6847 | .rpc_call_prepare = nfs41_free_stateid_prepare, | |
6848 | .rpc_call_done = nfs41_free_stateid_done, | |
6849 | .rpc_release = nfs41_free_stateid_release, | |
6850 | }; | |
6851 | ||
6852 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
6853 | nfs4_stateid *stateid, | |
6854 | bool privileged) | |
6855 | { | |
9aeda35f BS |
6856 | struct rpc_message msg = { |
6857 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
9aeda35f | 6858 | }; |
7c1d5fae TM |
6859 | struct rpc_task_setup task_setup = { |
6860 | .rpc_client = server->client, | |
6861 | .rpc_message = &msg, | |
6862 | .callback_ops = &nfs41_free_stateid_ops, | |
6863 | .flags = RPC_TASK_ASYNC, | |
6864 | }; | |
6865 | struct nfs_free_stateid_data *data; | |
9aeda35f | 6866 | |
38527b15 | 6867 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
6868 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6869 | if (!data) | |
6870 | return ERR_PTR(-ENOMEM); | |
6871 | data->server = server; | |
6872 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
6873 | ||
6874 | task_setup.callback_data = data; | |
6875 | ||
6876 | msg.rpc_argp = &data->args; | |
6877 | msg.rpc_resp = &data->res; | |
6878 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
6879 | if (privileged) | |
6880 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
6881 | ||
6882 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
6883 | } |
6884 | ||
38527b15 CL |
6885 | /** |
6886 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6887 | * | |
6888 | * @server: server / transport on which to perform the operation | |
6889 | * @stateid: state ID to release | |
6890 | * | |
6891 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6892 | * negative NFS4ERR value is returned. | |
6893 | */ | |
1cab0652 | 6894 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6895 | { |
7c1d5fae TM |
6896 | struct rpc_task *task; |
6897 | int ret; | |
6898 | ||
6899 | task = _nfs41_free_stateid(server, stateid, true); | |
6900 | if (IS_ERR(task)) | |
6901 | return PTR_ERR(task); | |
6902 | ret = rpc_wait_for_completion_task(task); | |
6903 | if (!ret) | |
6904 | ret = task->tk_status; | |
6905 | rpc_put_task(task); | |
6906 | return ret; | |
9aeda35f | 6907 | } |
36281caa | 6908 | |
c8b2d0bf TM |
6909 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
6910 | { | |
6911 | struct rpc_task *task; | |
6912 | ||
6913 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, false); | |
6914 | nfs4_free_lock_state(server, lsp); | |
6915 | if (IS_ERR(task)) | |
6916 | return PTR_ERR(task); | |
6917 | rpc_put_task(task); | |
6918 | return 0; | |
6919 | } | |
6920 | ||
36281caa TM |
6921 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
6922 | const nfs4_stateid *s2) | |
6923 | { | |
2d2f24ad | 6924 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6925 | return false; |
6926 | ||
2d2f24ad | 6927 | if (s1->seqid == s2->seqid) |
36281caa | 6928 | return true; |
2d2f24ad | 6929 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6930 | return true; |
6931 | ||
6932 | return false; | |
6933 | } | |
6934 | ||
557134a3 AA |
6935 | #endif /* CONFIG_NFS_V4_1 */ |
6936 | ||
36281caa TM |
6937 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6938 | const nfs4_stateid *s2) | |
6939 | { | |
f597c537 | 6940 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6941 | } |
6942 | ||
6943 | ||
17280175 | 6944 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6945 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6946 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6947 | .recover_open = nfs4_open_reclaim, |
6948 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6949 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6950 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6951 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6952 | }; |
6953 | ||
591d71cb | 6954 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6955 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6956 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6957 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6958 | .recover_open = nfs4_open_reclaim, | |
6959 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6960 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6961 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6962 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6963 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6964 | }; |
6965 | #endif /* CONFIG_NFS_V4_1 */ | |
6966 | ||
17280175 | 6967 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6968 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6969 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6970 | .recover_open = nfs4_open_expired, | |
6971 | .recover_lock = nfs4_lock_expired, | |
6972 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6973 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6974 | }; |
6975 | ||
6976 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6977 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6978 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6979 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6980 | .recover_open = nfs41_open_expired, |
6981 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6982 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6983 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6984 | }; |
591d71cb | 6985 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6986 | |
17280175 | 6987 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6988 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6989 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6990 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6991 | }; |
6992 | ||
6993 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6994 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6995 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6996 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6997 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6998 | }; |
6999 | #endif | |
7000 | ||
97dc1359 TM |
7001 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7002 | .minor_version = 0, | |
39c6daae TM |
7003 | .init_caps = NFS_CAP_READDIRPLUS |
7004 | | NFS_CAP_ATOMIC_OPEN | |
7005 | | NFS_CAP_CHANGE_ATTR | |
7006 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 7007 | .call_sync = _nfs4_call_sync, |
36281caa | 7008 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7009 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7010 | .free_lock_state = nfs4_release_lockowner, |
c48f4f35 TM |
7011 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7012 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7013 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7014 | }; |
7015 | ||
7016 | #if defined(CONFIG_NFS_V4_1) | |
7017 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7018 | .minor_version = 1, | |
39c6daae TM |
7019 | .init_caps = NFS_CAP_READDIRPLUS |
7020 | | NFS_CAP_ATOMIC_OPEN | |
7021 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7022 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7023 | | NFS_CAP_STATEID_NFSV41 |
7024 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 7025 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 7026 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7027 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7028 | .free_lock_state = nfs41_free_lock_state, |
c48f4f35 TM |
7029 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7030 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7031 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7032 | }; |
7033 | #endif | |
7034 | ||
42c2c424 SD |
7035 | #if defined(CONFIG_NFS_V4_2) |
7036 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7037 | .minor_version = 2, | |
7038 | .call_sync = nfs4_call_sync_sequence, | |
7039 | .match_stateid = nfs41_match_stateid, | |
7040 | .find_root_sec = nfs41_find_root_sec, | |
7041 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, | |
7042 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7043 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7044 | }; | |
7045 | #endif | |
7046 | ||
97dc1359 TM |
7047 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7048 | [0] = &nfs_v4_0_minor_ops, | |
7049 | #if defined(CONFIG_NFS_V4_1) | |
7050 | [1] = &nfs_v4_1_minor_ops, | |
7051 | #endif | |
42c2c424 SD |
7052 | #if defined(CONFIG_NFS_V4_2) |
7053 | [2] = &nfs_v4_2_minor_ops, | |
7054 | #endif | |
97dc1359 TM |
7055 | }; |
7056 | ||
73a79706 BS |
7057 | const struct inode_operations nfs4_dir_inode_operations = { |
7058 | .create = nfs_create, | |
7059 | .lookup = nfs_lookup, | |
7060 | .atomic_open = nfs_atomic_open, | |
7061 | .link = nfs_link, | |
7062 | .unlink = nfs_unlink, | |
7063 | .symlink = nfs_symlink, | |
7064 | .mkdir = nfs_mkdir, | |
7065 | .rmdir = nfs_rmdir, | |
7066 | .mknod = nfs_mknod, | |
7067 | .rename = nfs_rename, | |
7068 | .permission = nfs_permission, | |
7069 | .getattr = nfs_getattr, | |
7070 | .setattr = nfs_setattr, | |
7071 | .getxattr = generic_getxattr, | |
7072 | .setxattr = generic_setxattr, | |
7073 | .listxattr = generic_listxattr, | |
7074 | .removexattr = generic_removexattr, | |
7075 | }; | |
7076 | ||
92e1d5be | 7077 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7078 | .permission = nfs_permission, |
7079 | .getattr = nfs_getattr, | |
7080 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7081 | .getxattr = generic_getxattr, |
7082 | .setxattr = generic_setxattr, | |
7083 | .listxattr = generic_listxattr, | |
7084 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7085 | }; |
7086 | ||
509de811 | 7087 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7088 | .version = 4, /* protocol version */ |
7089 | .dentry_ops = &nfs4_dentry_operations, | |
7090 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7091 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7092 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7093 | .getroot = nfs4_proc_get_root, |
281cad46 | 7094 | .submount = nfs4_submount, |
ff9099f2 | 7095 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7096 | .getattr = nfs4_proc_getattr, |
7097 | .setattr = nfs4_proc_setattr, | |
7098 | .lookup = nfs4_proc_lookup, | |
7099 | .access = nfs4_proc_access, | |
7100 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7101 | .create = nfs4_proc_create, |
7102 | .remove = nfs4_proc_remove, | |
7103 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7104 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7105 | .unlink_done = nfs4_proc_unlink_done, |
7106 | .rename = nfs4_proc_rename, | |
d3d4152a | 7107 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7108 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7109 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7110 | .link = nfs4_proc_link, |
7111 | .symlink = nfs4_proc_symlink, | |
7112 | .mkdir = nfs4_proc_mkdir, | |
7113 | .rmdir = nfs4_proc_remove, | |
7114 | .readdir = nfs4_proc_readdir, | |
7115 | .mknod = nfs4_proc_mknod, | |
7116 | .statfs = nfs4_proc_statfs, | |
7117 | .fsinfo = nfs4_proc_fsinfo, | |
7118 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7119 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7120 | .decode_dirent = nfs4_decode_dirent, |
7121 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7122 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7123 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7124 | .read_done = nfs4_read_done, |
1da177e4 | 7125 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7126 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7127 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7128 | .write_done = nfs4_write_done, |
1da177e4 | 7129 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7130 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7131 | .commit_done = nfs4_commit_done, |
1da177e4 | 7132 | .lock = nfs4_proc_lock, |
e50a1c2e | 7133 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7134 | .close_context = nfs4_close_context, |
2b484297 | 7135 | .open_context = nfs4_atomic_open, |
011e2a7f | 7136 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7137 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7138 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7139 | .init_client = nfs4_init_client, |
cdb7eced | 7140 | .free_client = nfs4_free_client, |
1179acc6 BS |
7141 | .create_server = nfs4_create_server, |
7142 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7143 | }; |
7144 | ||
64c2ce8b AK |
7145 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7146 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7147 | .list = nfs4_xattr_list_nfs4_acl, | |
7148 | .get = nfs4_xattr_get_nfs4_acl, | |
7149 | .set = nfs4_xattr_set_nfs4_acl, | |
7150 | }; | |
7151 | ||
7152 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7153 | &nfs4_xattr_nfs4_acl_handler, | |
7154 | NULL | |
7155 | }; | |
7156 | ||
1da177e4 LT |
7157 | /* |
7158 | * Local variables: | |
7159 | * c-basic-offset: 8 | |
7160 | * End: | |
7161 | */ |