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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 | 68 | |
c6d01c6f TM |
69 | #include "nfs4trace.h" |
70 | ||
1da177e4 LT |
71 | #define NFSDBG_FACILITY NFSDBG_PROC |
72 | ||
2066fe89 | 73 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
74 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
75 | ||
cdd4e68b | 76 | struct nfs4_opendata; |
864472e9 | 77 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 78 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 79 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 80 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 81 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
82 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
86 | struct nfs4_state *state, struct nfs4_label *ilabel, |
87 | struct nfs4_label *olabel); | |
f062eb6c | 88 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
89 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
90 | struct rpc_cred *); | |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
92 | struct rpc_cred *); | |
f062eb6c | 93 | #endif |
aa9c2669 DQ |
94 | |
95 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
96 | static inline struct nfs4_label * | |
97 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
98 | struct iattr *sattr, struct nfs4_label *label) | |
99 | { | |
100 | int err; | |
101 | ||
102 | if (label == NULL) | |
103 | return NULL; | |
104 | ||
105 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
106 | return NULL; | |
107 | ||
108 | if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2) | |
109 | return NULL; | |
110 | ||
111 | err = security_dentry_init_security(dentry, sattr->ia_mode, | |
112 | &dentry->d_name, (void **)&label->label, &label->len); | |
113 | if (err == 0) | |
114 | return label; | |
115 | ||
116 | return NULL; | |
117 | } | |
118 | static inline void | |
119 | nfs4_label_release_security(struct nfs4_label *label) | |
120 | { | |
121 | if (label) | |
122 | security_release_secctx(label->label, label->len); | |
123 | } | |
124 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
125 | { | |
126 | if (label) | |
127 | return server->attr_bitmask; | |
128 | ||
129 | return server->attr_bitmask_nl; | |
130 | } | |
131 | #else | |
132 | static inline struct nfs4_label * | |
133 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
134 | struct iattr *sattr, struct nfs4_label *l) | |
135 | { return NULL; } | |
136 | static inline void | |
137 | nfs4_label_release_security(struct nfs4_label *label) | |
138 | { return; } | |
139 | static inline u32 * | |
140 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
141 | { return server->attr_bitmask; } | |
142 | #endif | |
143 | ||
1da177e4 | 144 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 145 | static int nfs4_map_errors(int err) |
1da177e4 | 146 | { |
52567b03 TM |
147 | if (err >= -1000) |
148 | return err; | |
149 | switch (err) { | |
150 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
151 | case -NFS4ERR_LAYOUTTRYLATER: |
152 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 153 | return -EREMOTEIO; |
7ebb9315 BS |
154 | case -NFS4ERR_WRONGSEC: |
155 | return -EPERM; | |
3ddeb7c5 TM |
156 | case -NFS4ERR_BADOWNER: |
157 | case -NFS4ERR_BADNAME: | |
158 | return -EINVAL; | |
fb13bfa7 TM |
159 | case -NFS4ERR_SHARE_DENIED: |
160 | return -EACCES; | |
f25efd85 SD |
161 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
162 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
163 | case -NFS4ERR_ACCESS: |
164 | return -EACCES; | |
6e3cf241 TM |
165 | case -NFS4ERR_FILE_OPEN: |
166 | return -EBUSY; | |
52567b03 | 167 | default: |
1da177e4 | 168 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 169 | __func__, -err); |
52567b03 | 170 | break; |
1da177e4 | 171 | } |
52567b03 | 172 | return -EIO; |
1da177e4 LT |
173 | } |
174 | ||
175 | /* | |
176 | * This is our standard bitmap for GETATTR requests. | |
177 | */ | |
1549210f | 178 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
179 | FATTR4_WORD0_TYPE |
180 | | FATTR4_WORD0_CHANGE | |
181 | | FATTR4_WORD0_SIZE | |
182 | | FATTR4_WORD0_FSID | |
183 | | FATTR4_WORD0_FILEID, | |
184 | FATTR4_WORD1_MODE | |
185 | | FATTR4_WORD1_NUMLINKS | |
186 | | FATTR4_WORD1_OWNER | |
187 | | FATTR4_WORD1_OWNER_GROUP | |
188 | | FATTR4_WORD1_RAWDEV | |
189 | | FATTR4_WORD1_SPACE_USED | |
190 | | FATTR4_WORD1_TIME_ACCESS | |
191 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
192 | | FATTR4_WORD1_TIME_MODIFY, |
193 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
194 | FATTR4_WORD2_SECURITY_LABEL | |
195 | #endif | |
1da177e4 LT |
196 | }; |
197 | ||
1549210f TM |
198 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
199 | FATTR4_WORD0_TYPE | |
200 | | FATTR4_WORD0_CHANGE | |
201 | | FATTR4_WORD0_SIZE | |
202 | | FATTR4_WORD0_FSID | |
203 | | FATTR4_WORD0_FILEID, | |
204 | FATTR4_WORD1_MODE | |
205 | | FATTR4_WORD1_NUMLINKS | |
206 | | FATTR4_WORD1_OWNER | |
207 | | FATTR4_WORD1_OWNER_GROUP | |
208 | | FATTR4_WORD1_RAWDEV | |
209 | | FATTR4_WORD1_SPACE_USED | |
210 | | FATTR4_WORD1_TIME_ACCESS | |
211 | | FATTR4_WORD1_TIME_METADATA | |
212 | | FATTR4_WORD1_TIME_MODIFY, | |
213 | FATTR4_WORD2_MDSTHRESHOLD | |
214 | }; | |
215 | ||
e23008ec AA |
216 | static const u32 nfs4_open_noattr_bitmap[3] = { |
217 | FATTR4_WORD0_TYPE | |
218 | | FATTR4_WORD0_CHANGE | |
219 | | FATTR4_WORD0_FILEID, | |
220 | }; | |
221 | ||
a09df2ca | 222 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
223 | FATTR4_WORD0_FILES_AVAIL |
224 | | FATTR4_WORD0_FILES_FREE | |
225 | | FATTR4_WORD0_FILES_TOTAL, | |
226 | FATTR4_WORD1_SPACE_AVAIL | |
227 | | FATTR4_WORD1_SPACE_FREE | |
228 | | FATTR4_WORD1_SPACE_TOTAL | |
229 | }; | |
230 | ||
a09df2ca | 231 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
232 | FATTR4_WORD0_MAXLINK |
233 | | FATTR4_WORD0_MAXNAME, | |
234 | 0 | |
235 | }; | |
236 | ||
dae100c2 | 237 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
238 | | FATTR4_WORD0_MAXREAD |
239 | | FATTR4_WORD0_MAXWRITE | |
240 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 241 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
242 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
243 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
244 | }; |
245 | ||
a09df2ca | 246 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
247 | FATTR4_WORD0_TYPE |
248 | | FATTR4_WORD0_CHANGE | |
249 | | FATTR4_WORD0_SIZE | |
250 | | FATTR4_WORD0_FSID | |
251 | | FATTR4_WORD0_FILEID | |
252 | | FATTR4_WORD0_FS_LOCATIONS, | |
253 | FATTR4_WORD1_MODE | |
254 | | FATTR4_WORD1_NUMLINKS | |
255 | | FATTR4_WORD1_OWNER | |
256 | | FATTR4_WORD1_OWNER_GROUP | |
257 | | FATTR4_WORD1_RAWDEV | |
258 | | FATTR4_WORD1_SPACE_USED | |
259 | | FATTR4_WORD1_TIME_ACCESS | |
260 | | FATTR4_WORD1_TIME_METADATA | |
261 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 262 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
263 | }; |
264 | ||
bc4785cd | 265 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
266 | struct nfs4_readdir_arg *readdir) |
267 | { | |
0dbb4c67 | 268 | __be32 *start, *p; |
1da177e4 | 269 | |
1da177e4 | 270 | if (cookie > 2) { |
b7ef1956 | 271 | readdir->cookie = cookie; |
1da177e4 LT |
272 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
273 | return; | |
274 | } | |
275 | ||
276 | readdir->cookie = 0; | |
277 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
278 | if (cookie == 2) | |
279 | return; | |
280 | ||
281 | /* | |
282 | * NFSv4 servers do not return entries for '.' and '..' | |
283 | * Therefore, we fake these entries here. We let '.' | |
284 | * have cookie 0 and '..' have cookie 1. Note that | |
285 | * when talking to the server, we always send cookie 0 | |
286 | * instead of 1 or 2. | |
287 | */ | |
2b86ce2d | 288 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
289 | |
290 | if (cookie == 0) { | |
291 | *p++ = xdr_one; /* next */ | |
292 | *p++ = xdr_zero; /* cookie, first word */ | |
293 | *p++ = xdr_one; /* cookie, second word */ | |
294 | *p++ = xdr_one; /* entry len */ | |
295 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
296 | p++; | |
297 | *p++ = xdr_one; /* bitmap length */ | |
298 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
299 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 300 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
301 | } |
302 | ||
303 | *p++ = xdr_one; /* next */ | |
304 | *p++ = xdr_zero; /* cookie, first word */ | |
305 | *p++ = xdr_two; /* cookie, second word */ | |
306 | *p++ = xdr_two; /* entry len */ | |
307 | memcpy(p, "..\0\0", 4); /* entry */ | |
308 | p++; | |
309 | *p++ = xdr_one; /* bitmap length */ | |
310 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
311 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 312 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
313 | |
314 | readdir->pgbase = (char *)p - (char *)start; | |
315 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 316 | kunmap_atomic(start); |
1da177e4 LT |
317 | } |
318 | ||
65de872e TM |
319 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
320 | { | |
321 | int res = 0; | |
322 | ||
323 | might_sleep(); | |
324 | ||
325 | if (*timeout <= 0) | |
326 | *timeout = NFS4_POLL_RETRY_MIN; | |
327 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
328 | *timeout = NFS4_POLL_RETRY_MAX; | |
416ad3c9 | 329 | freezable_schedule_timeout_killable_unsafe(*timeout); |
65de872e TM |
330 | if (fatal_signal_pending(current)) |
331 | res = -ERESTARTSYS; | |
332 | *timeout <<= 1; | |
333 | return res; | |
334 | } | |
335 | ||
336 | /* This is the error handling routine for processes that are allowed | |
337 | * to sleep. | |
338 | */ | |
b064eca2 | 339 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
340 | { |
341 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 342 | struct nfs4_state *state = exception->state; |
3114ea7a | 343 | struct inode *inode = exception->inode; |
65de872e TM |
344 | int ret = errorcode; |
345 | ||
346 | exception->retry = 0; | |
347 | switch(errorcode) { | |
348 | case 0: | |
349 | return 0; | |
3114ea7a | 350 | case -NFS4ERR_OPENMODE: |
011e2a7f | 351 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 352 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
353 | exception->retry = 1; |
354 | return 0; | |
355 | } | |
356 | if (state == NULL) | |
357 | break; | |
5d422301 TM |
358 | ret = nfs4_schedule_stateid_recovery(server, state); |
359 | if (ret < 0) | |
360 | break; | |
3114ea7a | 361 | goto wait_on_recovery; |
a1d0b5ee | 362 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
363 | case -NFS4ERR_ADMIN_REVOKED: |
364 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
365 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
366 | nfs_remove_bad_delegation(inode); | |
367 | exception->retry = 1; | |
368 | break; | |
369 | } | |
9e33bed5 TM |
370 | if (state == NULL) |
371 | break; | |
5d422301 TM |
372 | ret = nfs4_schedule_stateid_recovery(server, state); |
373 | if (ret < 0) | |
374 | break; | |
0400a6b0 | 375 | goto wait_on_recovery; |
0ced63d1 | 376 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
377 | if (state != NULL) { |
378 | ret = nfs4_schedule_stateid_recovery(server, state); | |
379 | if (ret < 0) | |
380 | break; | |
381 | } | |
65de872e | 382 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 383 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
384 | nfs4_schedule_lease_recovery(clp); |
385 | goto wait_on_recovery; | |
03391693 | 386 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
387 | case -NFS4ERR_BADSESSION: |
388 | case -NFS4ERR_BADSLOT: | |
389 | case -NFS4ERR_BAD_HIGH_SLOT: | |
390 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
391 | case -NFS4ERR_DEADSESSION: | |
392 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
393 | case -NFS4ERR_SEQ_MISORDERED: | |
394 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
395 | errorcode); | |
9f594791 | 396 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 397 | goto wait_on_recovery; |
03391693 | 398 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 399 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
400 | if (exception->timeout > HZ) { |
401 | /* We have retried a decent amount, time to | |
402 | * fail | |
403 | */ | |
404 | ret = -EBUSY; | |
405 | break; | |
406 | } | |
65de872e TM |
407 | case -NFS4ERR_GRACE: |
408 | case -NFS4ERR_DELAY: | |
409 | ret = nfs4_delay(server->client, &exception->timeout); | |
410 | if (ret != 0) | |
411 | break; | |
a8a4ae3a | 412 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
413 | case -NFS4ERR_OLD_STATEID: |
414 | exception->retry = 1; | |
b064eca2 TM |
415 | break; |
416 | case -NFS4ERR_BADOWNER: | |
417 | /* The following works around a Linux server bug! */ | |
418 | case -NFS4ERR_BADNAME: | |
419 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
420 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
421 | exception->retry = 1; | |
422 | printk(KERN_WARNING "NFS: v4 server %s " | |
423 | "does not accept raw " | |
424 | "uid/gids. " | |
425 | "Reenabling the idmapper.\n", | |
426 | server->nfs_client->cl_hostname); | |
427 | } | |
65de872e TM |
428 | } |
429 | /* We failed to handle the error */ | |
430 | return nfs4_map_errors(ret); | |
0400a6b0 | 431 | wait_on_recovery: |
a2c0b9e2 TM |
432 | ret = nfs4_wait_clnt_recover(clp); |
433 | if (ret == 0) | |
434 | exception->retry = 1; | |
435 | return ret; | |
65de872e TM |
436 | } |
437 | ||
438 | ||
452e9352 | 439 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 440 | { |
1da177e4 LT |
441 | spin_lock(&clp->cl_lock); |
442 | if (time_before(clp->cl_last_renewal,timestamp)) | |
443 | clp->cl_last_renewal = timestamp; | |
444 | spin_unlock(&clp->cl_lock); | |
445 | } | |
446 | ||
452e9352 TM |
447 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
448 | { | |
449 | do_renew_lease(server->nfs_client, timestamp); | |
450 | } | |
451 | ||
cccef3b9 AA |
452 | #if defined(CONFIG_NFS_V4_1) |
453 | ||
d185a334 | 454 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 455 | { |
e3725ec0 | 456 | struct nfs4_session *session; |
13615871 | 457 | struct nfs4_slot_table *tbl; |
c10e4498 | 458 | bool send_new_highest_used_slotid = false; |
13615871 | 459 | |
dfb4f309 | 460 | if (!res->sr_slot) { |
13615871 AA |
461 | /* just wake up the next guy waiting since |
462 | * we may have not consumed a slot after all */ | |
691daf3b | 463 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 464 | return; |
13615871 | 465 | } |
e3725ec0 TM |
466 | tbl = res->sr_slot->table; |
467 | session = tbl->session; | |
ea028ac9 | 468 | |
35dc1d74 | 469 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
470 | /* Be nice to the server: try to ensure that the last transmitted |
471 | * value for highest_user_slotid <= target_highest_slotid | |
472 | */ | |
473 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
474 | send_new_highest_used_slotid = true; | |
475 | ||
b75ad4cd TM |
476 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
477 | send_new_highest_used_slotid = false; | |
478 | goto out_unlock; | |
479 | } | |
f4af6e2a | 480 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
481 | |
482 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
483 | send_new_highest_used_slotid = false; | |
b75ad4cd | 484 | out_unlock: |
35dc1d74 | 485 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 486 | res->sr_slot = NULL; |
c10e4498 TM |
487 | if (send_new_highest_used_slotid) |
488 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
489 | } |
490 | ||
14516c3a | 491 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 492 | { |
e3725ec0 | 493 | struct nfs4_session *session; |
933602e3 | 494 | struct nfs4_slot *slot; |
14516c3a | 495 | struct nfs_client *clp; |
ac20d163 | 496 | bool interrupted = false; |
85563073 | 497 | int ret = 1; |
b0df806c | 498 | |
468f8613 BS |
499 | /* don't increment the sequence number if the task wasn't sent */ |
500 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
501 | goto out; |
502 | ||
933602e3 | 503 | slot = res->sr_slot; |
e3725ec0 | 504 | session = slot->table->session; |
933602e3 | 505 | |
ac20d163 TM |
506 | if (slot->interrupted) { |
507 | slot->interrupted = 0; | |
508 | interrupted = true; | |
509 | } | |
510 | ||
691daf3b | 511 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
512 | switch (res->sr_status) { |
513 | case 0: | |
b0df806c | 514 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 515 | ++slot->seq_nr; |
e3725ec0 | 516 | clp = session->clp; |
8e63b6a8 | 517 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 518 | /* Check sequence flags */ |
b4410c2f TM |
519 | if (res->sr_status_flags != 0) |
520 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 521 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 522 | break; |
ac20d163 TM |
523 | case 1: |
524 | /* | |
525 | * sr_status remains 1 if an RPC level error occurred. | |
526 | * The server may or may not have processed the sequence | |
527 | * operation.. | |
528 | * Mark the slot as having hosted an interrupted RPC call. | |
529 | */ | |
530 | slot->interrupted = 1; | |
531 | goto out; | |
14516c3a TM |
532 | case -NFS4ERR_DELAY: |
533 | /* The server detected a resend of the RPC call and | |
534 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
535 | * of RFC5661. | |
536 | */ | |
df2fabff | 537 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 538 | __func__, |
df2fabff | 539 | slot->slot_nr, |
933602e3 | 540 | slot->seq_nr); |
14516c3a | 541 | goto out_retry; |
85563073 TM |
542 | case -NFS4ERR_BADSLOT: |
543 | /* | |
544 | * The slot id we used was probably retired. Try again | |
545 | * using a different slot id. | |
546 | */ | |
e8794440 TM |
547 | goto retry_nowait; |
548 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
549 | /* |
550 | * Was the last operation on this sequence interrupted? | |
551 | * If so, retry after bumping the sequence number. | |
552 | */ | |
553 | if (interrupted) { | |
554 | ++slot->seq_nr; | |
555 | goto retry_nowait; | |
556 | } | |
e8794440 TM |
557 | /* |
558 | * Could this slot have been previously retired? | |
559 | * If so, then the server may be expecting seq_nr = 1! | |
560 | */ | |
8e63b6a8 TM |
561 | if (slot->seq_nr != 1) { |
562 | slot->seq_nr = 1; | |
563 | goto retry_nowait; | |
564 | } | |
565 | break; | |
e8794440 TM |
566 | case -NFS4ERR_SEQ_FALSE_RETRY: |
567 | ++slot->seq_nr; | |
568 | goto retry_nowait; | |
14516c3a TM |
569 | default: |
570 | /* Just update the slot sequence no. */ | |
933602e3 | 571 | ++slot->seq_nr; |
b0df806c AA |
572 | } |
573 | out: | |
574 | /* The session may be reset by one of the error handlers. */ | |
575 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 576 | nfs41_sequence_free_slot(res); |
85563073 | 577 | return ret; |
e8794440 TM |
578 | retry_nowait: |
579 | if (rpc_restart_call_prepare(task)) { | |
580 | task->tk_status = 0; | |
581 | ret = 0; | |
582 | } | |
583 | goto out; | |
14516c3a | 584 | out_retry: |
d05dd4e9 | 585 | if (!rpc_restart_call(task)) |
14516c3a TM |
586 | goto out; |
587 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
588 | return 0; | |
b0df806c AA |
589 | } |
590 | ||
14516c3a TM |
591 | static int nfs4_sequence_done(struct rpc_task *task, |
592 | struct nfs4_sequence_res *res) | |
df896455 | 593 | { |
e3725ec0 | 594 | if (res->sr_slot == NULL) |
14516c3a TM |
595 | return 1; |
596 | return nfs41_sequence_done(task, res); | |
df896455 TM |
597 | } |
598 | ||
9d12b216 TM |
599 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
600 | struct nfs4_sequence_res *res, int cache_reply) | |
601 | { | |
2b2fa717 | 602 | args->sa_slot = NULL; |
9d12b216 | 603 | args->sa_cache_this = 0; |
8fe72bac | 604 | args->sa_privileged = 0; |
9d12b216 TM |
605 | if (cache_reply) |
606 | args->sa_cache_this = 1; | |
9d12b216 TM |
607 | res->sr_slot = NULL; |
608 | } | |
609 | ||
8fe72bac TM |
610 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
611 | { | |
612 | args->sa_privileged = 1; | |
613 | } | |
614 | ||
dc70d7b3 | 615 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
616 | struct nfs4_sequence_args *args, |
617 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
618 | struct rpc_task *task) |
619 | { | |
fbcd4abc AA |
620 | struct nfs4_slot *slot; |
621 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
622 | |
623 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 624 | /* slot already allocated? */ |
dfb4f309 | 625 | if (res->sr_slot != NULL) |
d9afbd1b | 626 | goto out_success; |
ce5039c1 | 627 | |
fbcd4abc AA |
628 | tbl = &session->fc_slot_table; |
629 | ||
69d206b5 TM |
630 | task->tk_timeout = 0; |
631 | ||
fbcd4abc | 632 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 633 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 634 | !args->sa_privileged) { |
0b1c8fc4 | 635 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 636 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 637 | goto out_sleep; |
689cf5c1 AB |
638 | } |
639 | ||
2dc03b7f | 640 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
641 | if (IS_ERR(slot)) { |
642 | /* If out of memory, try again in 1/4 second */ | |
643 | if (slot == ERR_PTR(-ENOMEM)) | |
644 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 645 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 646 | goto out_sleep; |
fbcd4abc AA |
647 | } |
648 | spin_unlock(&tbl->slot_tbl_lock); | |
649 | ||
2b2fa717 | 650 | args->sa_slot = slot; |
fbcd4abc | 651 | |
2dc03b7f TM |
652 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
653 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 654 | |
dfb4f309 | 655 | res->sr_slot = slot; |
8e63b6a8 | 656 | res->sr_timestamp = jiffies; |
2a6e26cd | 657 | res->sr_status_flags = 0; |
fbcd4abc AA |
658 | /* |
659 | * sr_status is only set in decode_sequence, and so will remain | |
660 | * set to 1 if an rpc level failure occurs. | |
661 | */ | |
662 | res->sr_status = 1; | |
d9afbd1b TM |
663 | out_success: |
664 | rpc_call_start(task); | |
ce5039c1 | 665 | return 0; |
7b939a3f | 666 | out_sleep: |
8fe72bac TM |
667 | /* Privileged tasks are queued with top priority */ |
668 | if (args->sa_privileged) | |
1e1093c7 TM |
669 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
670 | NULL, RPC_PRIORITY_PRIVILEGED); | |
671 | else | |
672 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
673 | spin_unlock(&tbl->slot_tbl_lock); |
674 | return -EAGAIN; | |
ce5039c1 | 675 | } |
dc70d7b3 | 676 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 677 | |
035168ab | 678 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
679 | struct nfs4_sequence_args *args, |
680 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
681 | struct rpc_task *task) |
682 | { | |
035168ab | 683 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
684 | int ret = 0; |
685 | ||
d9afbd1b TM |
686 | if (session == NULL) { |
687 | rpc_call_start(task); | |
035168ab | 688 | goto out; |
d9afbd1b | 689 | } |
035168ab | 690 | |
df2fabff | 691 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 692 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 693 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 694 | |
9d12b216 | 695 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
696 | out: |
697 | dprintk("<-- %s status=%d\n", __func__, ret); | |
698 | return ret; | |
699 | } | |
700 | ||
701 | struct nfs41_call_sync_data { | |
035168ab | 702 | const struct nfs_server *seq_server; |
ce5039c1 AA |
703 | struct nfs4_sequence_args *seq_args; |
704 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
705 | }; |
706 | ||
707 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
708 | { | |
709 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 710 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 711 | |
035168ab TM |
712 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
713 | ||
d9afbd1b | 714 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
715 | } |
716 | ||
69ab40c4 AA |
717 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
718 | { | |
719 | struct nfs41_call_sync_data *data = calldata; | |
720 | ||
14516c3a | 721 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
722 | } |
723 | ||
17280175 | 724 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 725 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 726 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
727 | }; |
728 | ||
7c513058 BS |
729 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
730 | struct nfs_server *server, | |
ce5039c1 AA |
731 | struct rpc_message *msg, |
732 | struct nfs4_sequence_args *args, | |
8fe72bac | 733 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
734 | { |
735 | int ret; | |
736 | struct rpc_task *task; | |
737 | struct nfs41_call_sync_data data = { | |
035168ab | 738 | .seq_server = server, |
ce5039c1 AA |
739 | .seq_args = args, |
740 | .seq_res = res, | |
ce5039c1 AA |
741 | }; |
742 | struct rpc_task_setup task_setup = { | |
7c513058 | 743 | .rpc_client = clnt, |
ce5039c1 AA |
744 | .rpc_message = msg, |
745 | .callback_ops = &nfs41_call_sync_ops, | |
746 | .callback_data = &data | |
747 | }; | |
748 | ||
ce5039c1 AA |
749 | task = rpc_run_task(&task_setup); |
750 | if (IS_ERR(task)) | |
751 | ret = PTR_ERR(task); | |
752 | else { | |
753 | ret = task->tk_status; | |
754 | rpc_put_task(task); | |
755 | } | |
756 | return ret; | |
757 | } | |
758 | ||
df896455 | 759 | #else |
8fe72bac | 760 | static |
9d12b216 TM |
761 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
762 | struct nfs4_sequence_res *res, int cache_reply) | |
763 | { | |
764 | } | |
765 | ||
8fe72bac TM |
766 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
767 | { | |
768 | } | |
769 | ||
770 | ||
14516c3a TM |
771 | static int nfs4_sequence_done(struct rpc_task *task, |
772 | struct nfs4_sequence_res *res) | |
df896455 | 773 | { |
14516c3a | 774 | return 1; |
df896455 | 775 | } |
cccef3b9 AA |
776 | #endif /* CONFIG_NFS_V4_1 */ |
777 | ||
fd0c0953 | 778 | static |
7c513058 BS |
779 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
780 | struct nfs_server *server, | |
cccef3b9 AA |
781 | struct rpc_message *msg, |
782 | struct nfs4_sequence_args *args, | |
fd0c0953 | 783 | struct nfs4_sequence_res *res) |
cccef3b9 | 784 | { |
7c513058 | 785 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
786 | } |
787 | ||
fd0c0953 | 788 | static |
7c513058 BS |
789 | int nfs4_call_sync(struct rpc_clnt *clnt, |
790 | struct nfs_server *server, | |
e73b83f2 BS |
791 | struct rpc_message *msg, |
792 | struct nfs4_sequence_args *args, | |
793 | struct nfs4_sequence_res *res, | |
794 | int cache_reply) | |
795 | { | |
fd0c0953 | 796 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 797 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 798 | args, res); |
e73b83f2 | 799 | } |
cccef3b9 | 800 | |
38478b24 | 801 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 802 | { |
38478b24 | 803 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 804 | |
38478b24 | 805 | spin_lock(&dir->i_lock); |
359d7d1c | 806 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 807 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 808 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 809 | dir->i_version = cinfo->after; |
de242c0b | 810 | nfs_fscache_invalidate(dir); |
38478b24 | 811 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
812 | } |
813 | ||
e56e0b78 | 814 | struct nfs4_opendata { |
c6d00e63 | 815 | struct kref kref; |
e56e0b78 TM |
816 | struct nfs_openargs o_arg; |
817 | struct nfs_openres o_res; | |
cdd4e68b TM |
818 | struct nfs_open_confirmargs c_arg; |
819 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
820 | struct nfs4_string owner_name; |
821 | struct nfs4_string group_name; | |
e56e0b78 | 822 | struct nfs_fattr f_attr; |
1775fd3e | 823 | struct nfs4_label *f_label; |
e56e0b78 | 824 | struct dentry *dir; |
82a2c1b7 | 825 | struct dentry *dentry; |
e56e0b78 | 826 | struct nfs4_state_owner *owner; |
aac00a8d | 827 | struct nfs4_state *state; |
e56e0b78 | 828 | struct iattr attrs; |
26e976a8 | 829 | unsigned long timestamp; |
3e309914 | 830 | unsigned int rpc_done : 1; |
bdeca1b7 | 831 | unsigned int is_recover : 1; |
24ac23ab TM |
832 | int rpc_status; |
833 | int cancelled; | |
e56e0b78 TM |
834 | }; |
835 | ||
49f9a0fa TM |
836 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
837 | int err, struct nfs4_exception *exception) | |
838 | { | |
839 | if (err != -EINVAL) | |
840 | return false; | |
841 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
842 | return false; | |
843 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
844 | exception->retry = 1; | |
845 | return true; | |
846 | } | |
847 | ||
848 | static enum open_claim_type4 | |
849 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
850 | enum open_claim_type4 claim) | |
851 | { | |
852 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
853 | return claim; | |
854 | switch (claim) { | |
855 | default: | |
856 | return claim; | |
857 | case NFS4_OPEN_CLAIM_FH: | |
858 | return NFS4_OPEN_CLAIM_NULL; | |
859 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
860 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
861 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
862 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
863 | } | |
864 | } | |
2ced46c2 TM |
865 | |
866 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
867 | { | |
868 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 869 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
870 | p->o_res.seqid = p->o_arg.seqid; |
871 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 872 | p->o_res.server = p->o_arg.server; |
5f657530 | 873 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 874 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 875 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
876 | } |
877 | ||
82a2c1b7 | 878 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 879 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 880 | const struct iattr *attrs, |
1775fd3e | 881 | struct nfs4_label *label, |
4a1c0893 | 882 | enum open_claim_type4 claim, |
8535b2be | 883 | gfp_t gfp_mask) |
e56e0b78 | 884 | { |
82a2c1b7 | 885 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
886 | struct inode *dir = parent->d_inode; |
887 | struct nfs_server *server = NFS_SERVER(dir); | |
888 | struct nfs4_opendata *p; | |
889 | ||
8535b2be | 890 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
891 | if (p == NULL) |
892 | goto err; | |
14c43f76 DQ |
893 | |
894 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
895 | if (IS_ERR(p->f_label)) | |
896 | goto err_free_p; | |
897 | ||
8535b2be | 898 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 899 | if (p->o_arg.seqid == NULL) |
14c43f76 | 900 | goto err_free_label; |
82a2c1b7 AV |
901 | nfs_sb_active(dentry->d_sb); |
902 | p->dentry = dget(dentry); | |
e56e0b78 TM |
903 | p->dir = parent; |
904 | p->owner = sp; | |
905 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
906 | p->o_arg.open_flags = flags; |
907 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
908 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
909 | * will return permission denied for all bits until close */ | |
910 | if (!(flags & O_EXCL)) { | |
911 | /* ask server to check for all possible rights as results | |
912 | * are cached */ | |
913 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
914 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 915 | } |
7539bbab | 916 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
917 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
918 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 919 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 920 | p->o_arg.server = server; |
aa9c2669 | 921 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 922 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 923 | p->o_arg.label = label; |
49f9a0fa TM |
924 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
925 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
926 | case NFS4_OPEN_CLAIM_NULL: |
927 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
928 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
929 | p->o_arg.fh = NFS_FH(dir); | |
930 | break; | |
931 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
932 | case NFS4_OPEN_CLAIM_FH: | |
933 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
934 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
935 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
936 | } | |
536e43d1 | 937 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 938 | __u32 verf[2]; |
d77d76ff | 939 | |
e56e0b78 TM |
940 | p->o_arg.u.attrs = &p->attrs; |
941 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
942 | |
943 | verf[0] = jiffies; | |
944 | verf[1] = current->pid; | |
945 | memcpy(p->o_arg.u.verifier.data, verf, | |
946 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 947 | } |
cdd4e68b TM |
948 | p->c_arg.fh = &p->o_res.fh; |
949 | p->c_arg.stateid = &p->o_res.stateid; | |
950 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 951 | nfs4_init_opendata_res(p); |
c6d00e63 | 952 | kref_init(&p->kref); |
e56e0b78 | 953 | return p; |
14c43f76 DQ |
954 | |
955 | err_free_label: | |
956 | nfs4_label_free(p->f_label); | |
957 | err_free_p: | |
e56e0b78 TM |
958 | kfree(p); |
959 | err: | |
960 | dput(parent); | |
961 | return NULL; | |
962 | } | |
963 | ||
c6d00e63 | 964 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 965 | { |
c6d00e63 TM |
966 | struct nfs4_opendata *p = container_of(kref, |
967 | struct nfs4_opendata, kref); | |
82a2c1b7 | 968 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
969 | |
970 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
971 | if (p->state != NULL) |
972 | nfs4_put_open_state(p->state); | |
c6d00e63 | 973 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
974 | |
975 | nfs4_label_free(p->f_label); | |
976 | ||
c6d00e63 | 977 | dput(p->dir); |
82a2c1b7 AV |
978 | dput(p->dentry); |
979 | nfs_sb_deactive(sb); | |
6926afd1 | 980 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
981 | kfree(p); |
982 | } | |
983 | ||
984 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
985 | { | |
986 | if (p != NULL) | |
987 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
988 | } |
989 | ||
06f814a3 TM |
990 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
991 | { | |
06f814a3 TM |
992 | int ret; |
993 | ||
06f814a3 | 994 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
995 | return ret; |
996 | } | |
997 | ||
dc0b027d | 998 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
999 | { |
1000 | int ret = 0; | |
dc0b027d | 1001 | |
536e43d1 | 1002 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1003 | goto out; |
1004 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1005 | case FMODE_READ: |
88069f77 TM |
1006 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1007 | && state->n_rdonly != 0; | |
6ee41268 TM |
1008 | break; |
1009 | case FMODE_WRITE: | |
88069f77 TM |
1010 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1011 | && state->n_wronly != 0; | |
6ee41268 TM |
1012 | break; |
1013 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1014 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1015 | && state->n_rdwr != 0; | |
6ee41268 | 1016 | } |
dc0b027d | 1017 | out: |
6ee41268 TM |
1018 | return ret; |
1019 | } | |
1020 | ||
dc0b027d | 1021 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1022 | { |
652f89f6 TM |
1023 | if (delegation == NULL) |
1024 | return 0; | |
dc0b027d | 1025 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1026 | return 0; |
15c831bf | 1027 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1028 | return 0; |
d25be546 TM |
1029 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1030 | return 0; | |
b7391f44 | 1031 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1032 | return 1; |
1033 | } | |
1034 | ||
dc0b027d | 1035 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1036 | { |
dc0b027d | 1037 | switch (fmode) { |
e7616923 TM |
1038 | case FMODE_WRITE: |
1039 | state->n_wronly++; | |
1040 | break; | |
1041 | case FMODE_READ: | |
1042 | state->n_rdonly++; | |
1043 | break; | |
1044 | case FMODE_READ|FMODE_WRITE: | |
1045 | state->n_rdwr++; | |
1046 | } | |
dc0b027d | 1047 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1048 | } |
1049 | ||
dc0b027d | 1050 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1051 | { |
1052 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1053 | nfs4_stateid_copy(&state->stateid, stateid); |
1054 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 1055 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 1056 | switch (fmode) { |
003707c7 TM |
1057 | case FMODE_READ: |
1058 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1059 | break; | |
1060 | case FMODE_WRITE: | |
1061 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1062 | break; | |
1063 | case FMODE_READ|FMODE_WRITE: | |
1064 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1065 | } | |
e7616923 TM |
1066 | } |
1067 | ||
dc0b027d | 1068 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1069 | { |
8bda4e4c | 1070 | write_seqlock(&state->seqlock); |
dc0b027d | 1071 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1072 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1073 | } |
1074 | ||
dc0b027d | 1075 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1076 | { |
8bda4e4c TM |
1077 | /* |
1078 | * Protect the call to nfs4_state_set_mode_locked and | |
1079 | * serialise the stateid update | |
1080 | */ | |
1081 | write_seqlock(&state->seqlock); | |
003707c7 | 1082 | if (deleg_stateid != NULL) { |
f597c537 | 1083 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1084 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1085 | } | |
1086 | if (open_stateid != NULL) | |
dc0b027d | 1087 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1088 | write_sequnlock(&state->seqlock); |
1089 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1090 | update_open_stateflags(state, fmode); |
ec073428 | 1091 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1092 | } |
1093 | ||
dc0b027d | 1094 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1095 | { |
1096 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1097 | struct nfs_delegation *deleg_cur; | |
1098 | int ret = 0; | |
1099 | ||
dc0b027d | 1100 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1101 | |
1102 | rcu_read_lock(); | |
1103 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1104 | if (deleg_cur == NULL) | |
1105 | goto no_delegation; | |
1106 | ||
1107 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1108 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1109 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1110 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1111 | goto no_delegation_unlock; |
1112 | ||
1113 | if (delegation == NULL) | |
1114 | delegation = &deleg_cur->stateid; | |
f597c537 | 1115 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1116 | goto no_delegation_unlock; |
1117 | ||
b7391f44 | 1118 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1119 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1120 | ret = 1; |
1121 | no_delegation_unlock: | |
1122 | spin_unlock(&deleg_cur->lock); | |
1123 | no_delegation: | |
1124 | rcu_read_unlock(); | |
1125 | ||
1126 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1127 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1128 | ret = 1; |
1129 | } | |
1130 | ||
1131 | return ret; | |
1132 | } | |
1133 | ||
1134 | ||
dc0b027d | 1135 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1136 | { |
1137 | struct nfs_delegation *delegation; | |
1138 | ||
1139 | rcu_read_lock(); | |
1140 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1141 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1142 | rcu_read_unlock(); |
1143 | return; | |
1144 | } | |
1145 | rcu_read_unlock(); | |
57ec14c5 | 1146 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1147 | } |
1148 | ||
6ee41268 | 1149 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1150 | { |
1151 | struct nfs4_state *state = opendata->state; | |
1152 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1153 | struct nfs_delegation *delegation; | |
f448badd | 1154 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1155 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1156 | nfs4_stateid stateid; |
1157 | int ret = -EAGAIN; | |
1158 | ||
aac00a8d | 1159 | for (;;) { |
dc0b027d | 1160 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1161 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1162 | if (can_open_cached(state, fmode, open_mode)) { |
1163 | update_open_stateflags(state, fmode); | |
6ee41268 | 1164 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1165 | goto out_return_state; |
1166 | } | |
1167 | spin_unlock(&state->owner->so_lock); | |
1168 | } | |
34310430 TM |
1169 | rcu_read_lock(); |
1170 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1171 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1172 | rcu_read_unlock(); |
aac00a8d | 1173 | break; |
34310430 | 1174 | } |
aac00a8d | 1175 | /* Save the delegation */ |
f597c537 | 1176 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1177 | rcu_read_unlock(); |
fa332941 | 1178 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1179 | if (!opendata->is_recover) { |
1180 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1181 | if (ret != 0) | |
1182 | goto out; | |
1183 | } | |
aac00a8d | 1184 | ret = -EAGAIN; |
34310430 TM |
1185 | |
1186 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1187 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1188 | goto out_return_state; |
aac00a8d | 1189 | } |
aac00a8d TM |
1190 | out: |
1191 | return ERR_PTR(ret); | |
1192 | out_return_state: | |
1193 | atomic_inc(&state->count); | |
1194 | return state; | |
1195 | } | |
1196 | ||
e23008ec AA |
1197 | static void |
1198 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1199 | { | |
1200 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1201 | struct nfs_delegation *delegation; | |
1202 | int delegation_flags = 0; | |
1203 | ||
1204 | rcu_read_lock(); | |
1205 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1206 | if (delegation) | |
1207 | delegation_flags = delegation->flags; | |
1208 | rcu_read_unlock(); | |
1209 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1210 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1211 | "returning a delegation for " | |
1212 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1213 | clp->cl_hostname); | |
1214 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1215 | nfs_inode_set_delegation(state->inode, | |
1216 | data->owner->so_cred, | |
1217 | &data->o_res); | |
1218 | else | |
1219 | nfs_inode_reclaim_delegation(state->inode, | |
1220 | data->owner->so_cred, | |
1221 | &data->o_res); | |
1222 | } | |
1223 | ||
1224 | /* | |
1225 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1226 | * and update the nfs4_state. | |
1227 | */ | |
1228 | static struct nfs4_state * | |
1229 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1230 | { | |
1231 | struct inode *inode = data->state->inode; | |
1232 | struct nfs4_state *state = data->state; | |
1233 | int ret; | |
1234 | ||
1235 | if (!data->rpc_done) { | |
1236 | ret = data->rpc_status; | |
1237 | goto err; | |
1238 | } | |
1239 | ||
1240 | ret = -ESTALE; | |
1241 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1242 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1243 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1244 | goto err; | |
1245 | ||
1246 | ret = -ENOMEM; | |
1247 | state = nfs4_get_open_state(inode, data->owner); | |
1248 | if (state == NULL) | |
1249 | goto err; | |
1250 | ||
1251 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1252 | if (ret) | |
1253 | goto err; | |
1254 | ||
aa9c2669 DQ |
1255 | nfs_setsecurity(inode, &data->f_attr, data->f_label); |
1256 | ||
e23008ec AA |
1257 | if (data->o_res.delegation_type != 0) |
1258 | nfs4_opendata_check_deleg(data, state); | |
1259 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1260 | data->o_arg.fmode); | |
1261 | ||
1262 | return state; | |
1263 | err: | |
1264 | return ERR_PTR(ret); | |
1265 | ||
1266 | } | |
1267 | ||
1268 | static struct nfs4_state * | |
1269 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1270 | { |
1271 | struct inode *inode; | |
1272 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1273 | int ret; |
24ac23ab | 1274 | |
aac00a8d | 1275 | if (!data->rpc_done) { |
6ee41268 | 1276 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1277 | goto out; |
1278 | } | |
1279 | ||
1b370bc2 | 1280 | ret = -EAGAIN; |
24ac23ab | 1281 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1282 | goto err; |
1775fd3e | 1283 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1284 | ret = PTR_ERR(inode); |
03f28e3a | 1285 | if (IS_ERR(inode)) |
1b370bc2 TM |
1286 | goto err; |
1287 | ret = -ENOMEM; | |
24ac23ab TM |
1288 | state = nfs4_get_open_state(inode, data->owner); |
1289 | if (state == NULL) | |
1b370bc2 | 1290 | goto err_put_inode; |
e23008ec AA |
1291 | if (data->o_res.delegation_type != 0) |
1292 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1293 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1294 | data->o_arg.fmode); |
24ac23ab | 1295 | iput(inode); |
aac00a8d | 1296 | out: |
7aa262b5 | 1297 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1298 | return state; |
1b370bc2 TM |
1299 | err_put_inode: |
1300 | iput(inode); | |
1301 | err: | |
1302 | return ERR_PTR(ret); | |
24ac23ab TM |
1303 | } |
1304 | ||
e23008ec AA |
1305 | static struct nfs4_state * |
1306 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1307 | { | |
1308 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1309 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1310 | return _nfs4_opendata_to_nfs4_state(data); | |
1311 | } | |
1312 | ||
864472e9 TM |
1313 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1314 | { | |
1315 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1316 | struct nfs_open_context *ctx; | |
1317 | ||
1318 | spin_lock(&state->inode->i_lock); | |
1319 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1320 | if (ctx->state != state) | |
1321 | continue; | |
1322 | get_nfs_open_context(ctx); | |
1323 | spin_unlock(&state->inode->i_lock); | |
1324 | return ctx; | |
1325 | } | |
1326 | spin_unlock(&state->inode->i_lock); | |
1327 | return ERR_PTR(-ENOENT); | |
1328 | } | |
1329 | ||
4a1c0893 TM |
1330 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1331 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1332 | { |
1333 | struct nfs4_opendata *opendata; | |
1334 | ||
4a1c0893 | 1335 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1336 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1337 | if (opendata == NULL) |
1338 | return ERR_PTR(-ENOMEM); | |
1339 | opendata->state = state; | |
1340 | atomic_inc(&state->count); | |
1341 | return opendata; | |
1342 | } | |
1343 | ||
dc0b027d | 1344 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1345 | { |
2ced46c2 | 1346 | struct nfs4_state *newstate; |
864472e9 TM |
1347 | int ret; |
1348 | ||
dc0b027d TM |
1349 | opendata->o_arg.open_flags = 0; |
1350 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1351 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1352 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1353 | nfs4_init_opendata_res(opendata); | |
b257957e | 1354 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1355 | if (ret != 0) |
1356 | return ret; | |
2ced46c2 | 1357 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1358 | if (IS_ERR(newstate)) |
1359 | return PTR_ERR(newstate); | |
643168c2 | 1360 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1361 | *res = newstate; |
864472e9 TM |
1362 | return 0; |
1363 | } | |
1364 | ||
1365 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1366 | { | |
864472e9 | 1367 | struct nfs4_state *newstate; |
864472e9 TM |
1368 | int ret; |
1369 | ||
1370 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1371 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1372 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1373 | smp_rmb(); |
1374 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1375 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1376 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1377 | if (ret != 0) |
1378 | return ret; | |
2ced46c2 TM |
1379 | if (newstate != state) |
1380 | return -ESTALE; | |
864472e9 TM |
1381 | } |
1382 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1383 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1384 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1385 | if (ret != 0) |
1386 | return ret; | |
2ced46c2 TM |
1387 | if (newstate != state) |
1388 | return -ESTALE; | |
864472e9 TM |
1389 | } |
1390 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1391 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1392 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1393 | if (ret != 0) |
1394 | return ret; | |
2ced46c2 TM |
1395 | if (newstate != state) |
1396 | return -ESTALE; | |
864472e9 | 1397 | } |
1ac7e2fd TM |
1398 | /* |
1399 | * We may have performed cached opens for all three recoveries. | |
1400 | * Check if we need to update the current stateid. | |
1401 | */ | |
1402 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1403 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1404 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1405 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1406 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1407 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1408 | } |
864472e9 TM |
1409 | return 0; |
1410 | } | |
1411 | ||
1da177e4 LT |
1412 | /* |
1413 | * OPEN_RECLAIM: | |
1414 | * reclaim state on the server after a reboot. | |
1da177e4 | 1415 | */ |
539cd03a | 1416 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1417 | { |
1ac7e2fd | 1418 | struct nfs_delegation *delegation; |
864472e9 | 1419 | struct nfs4_opendata *opendata; |
dc0b027d | 1420 | fmode_t delegation_type = 0; |
1da177e4 LT |
1421 | int status; |
1422 | ||
4a1c0893 TM |
1423 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1424 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1425 | if (IS_ERR(opendata)) |
1426 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1427 | rcu_read_lock(); |
1428 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1429 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1430 | delegation_type = delegation->type; |
1ac7e2fd | 1431 | rcu_read_unlock(); |
864472e9 TM |
1432 | opendata->o_arg.u.delegation_type = delegation_type; |
1433 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1434 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1435 | return status; |
1436 | } | |
1437 | ||
539cd03a | 1438 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1439 | { |
1440 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1441 | struct nfs4_exception exception = { }; | |
1442 | int err; | |
1443 | do { | |
539cd03a | 1444 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1445 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1446 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1447 | continue; | |
168667c4 | 1448 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1449 | break; |
1450 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1451 | } while (exception.retry); |
1452 | return err; | |
1453 | } | |
1454 | ||
864472e9 TM |
1455 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1456 | { | |
1457 | struct nfs_open_context *ctx; | |
1458 | int ret; | |
1459 | ||
1460 | ctx = nfs4_state_find_open_context(state); | |
1461 | if (IS_ERR(ctx)) | |
91876b13 | 1462 | return -EAGAIN; |
539cd03a | 1463 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1464 | put_nfs_open_context(ctx); |
1465 | return ret; | |
1466 | } | |
1467 | ||
db4f2e63 | 1468 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1469 | { |
be76b5b6 TM |
1470 | switch (err) { |
1471 | default: | |
1472 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1473 | "%d.\n", __func__, err); | |
1474 | case 0: | |
1475 | case -ENOENT: | |
1476 | case -ESTALE: | |
1477 | break; | |
1478 | case -NFS4ERR_BADSESSION: | |
1479 | case -NFS4ERR_BADSLOT: | |
1480 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1481 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1482 | case -NFS4ERR_DEADSESSION: | |
1483 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1484 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1485 | return -EAGAIN; | |
1486 | case -NFS4ERR_STALE_CLIENTID: | |
1487 | case -NFS4ERR_STALE_STATEID: | |
1488 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1489 | case -NFS4ERR_EXPIRED: | |
1490 | /* Don't recall a delegation if it was lost */ | |
1491 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1492 | return -EAGAIN; | |
1493 | case -NFS4ERR_DELEG_REVOKED: | |
1494 | case -NFS4ERR_ADMIN_REVOKED: | |
1495 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1496 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1497 | nfs_inode_find_state_and_recover(state->inode, |
1498 | stateid); | |
1499 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1500 | return 0; |
1501 | case -NFS4ERR_DELAY: | |
1502 | case -NFS4ERR_GRACE: | |
1503 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1504 | ssleep(1); | |
1505 | return -EAGAIN; | |
db4f2e63 TM |
1506 | case -ENOMEM: |
1507 | case -NFS4ERR_DENIED: | |
1508 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1509 | return 0; | |
be76b5b6 | 1510 | } |
1da177e4 LT |
1511 | return err; |
1512 | } | |
1513 | ||
db4f2e63 TM |
1514 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1515 | { | |
1516 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1517 | struct nfs4_opendata *opendata; | |
1518 | int err; | |
1519 | ||
1520 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1521 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1522 | if (IS_ERR(opendata)) | |
1523 | return PTR_ERR(opendata); | |
1524 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1525 | err = nfs4_open_recover(opendata, state); | |
1526 | nfs4_opendata_put(opendata); | |
1527 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1528 | } | |
1529 | ||
cdd4e68b TM |
1530 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1531 | { | |
1532 | struct nfs4_opendata *data = calldata; | |
1533 | ||
1534 | data->rpc_status = task->tk_status; | |
26e976a8 | 1535 | if (data->rpc_status == 0) { |
f597c537 | 1536 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1537 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1538 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1539 | data->rpc_done = 1; |
26e976a8 | 1540 | } |
cdd4e68b TM |
1541 | } |
1542 | ||
1543 | static void nfs4_open_confirm_release(void *calldata) | |
1544 | { | |
1545 | struct nfs4_opendata *data = calldata; | |
1546 | struct nfs4_state *state = NULL; | |
1547 | ||
1548 | /* If this request hasn't been cancelled, do nothing */ | |
1549 | if (data->cancelled == 0) | |
1550 | goto out_free; | |
1551 | /* In case of error, no cleanup! */ | |
3e309914 | 1552 | if (!data->rpc_done) |
cdd4e68b | 1553 | goto out_free; |
cdd4e68b | 1554 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1555 | if (!IS_ERR(state)) |
643168c2 | 1556 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1557 | out_free: |
c6d00e63 | 1558 | nfs4_opendata_put(data); |
cdd4e68b TM |
1559 | } |
1560 | ||
1561 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1562 | .rpc_call_done = nfs4_open_confirm_done, |
1563 | .rpc_release = nfs4_open_confirm_release, | |
1564 | }; | |
1565 | ||
1566 | /* | |
1567 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1568 | */ | |
1569 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1570 | { | |
1571 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1572 | struct rpc_task *task; | |
5138fde0 TM |
1573 | struct rpc_message msg = { |
1574 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1575 | .rpc_argp = &data->c_arg, | |
1576 | .rpc_resp = &data->c_res, | |
1577 | .rpc_cred = data->owner->so_cred, | |
1578 | }; | |
c970aa85 TM |
1579 | struct rpc_task_setup task_setup_data = { |
1580 | .rpc_client = server->client, | |
5138fde0 | 1581 | .rpc_message = &msg, |
c970aa85 TM |
1582 | .callback_ops = &nfs4_open_confirm_ops, |
1583 | .callback_data = data, | |
101070ca | 1584 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1585 | .flags = RPC_TASK_ASYNC, |
1586 | }; | |
1da177e4 LT |
1587 | int status; |
1588 | ||
c6d00e63 | 1589 | kref_get(&data->kref); |
3e309914 TM |
1590 | data->rpc_done = 0; |
1591 | data->rpc_status = 0; | |
5138fde0 | 1592 | data->timestamp = jiffies; |
c970aa85 | 1593 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1594 | if (IS_ERR(task)) |
cdd4e68b | 1595 | return PTR_ERR(task); |
cdd4e68b TM |
1596 | status = nfs4_wait_for_completion_rpc_task(task); |
1597 | if (status != 0) { | |
1598 | data->cancelled = 1; | |
1599 | smp_wmb(); | |
1600 | } else | |
1601 | status = data->rpc_status; | |
e6b3c4db | 1602 | rpc_put_task(task); |
1da177e4 LT |
1603 | return status; |
1604 | } | |
1605 | ||
24ac23ab | 1606 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1607 | { |
24ac23ab TM |
1608 | struct nfs4_opendata *data = calldata; |
1609 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1610 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1611 | |
24ac23ab | 1612 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1613 | goto out_wait; |
aac00a8d TM |
1614 | /* |
1615 | * Check if we still need to send an OPEN call, or if we can use | |
1616 | * a delegation instead. | |
1617 | */ | |
1618 | if (data->state != NULL) { | |
1619 | struct nfs_delegation *delegation; | |
1620 | ||
dc0b027d | 1621 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1622 | goto out_no_action; |
aac00a8d TM |
1623 | rcu_read_lock(); |
1624 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1625 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1626 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1627 | can_open_delegated(delegation, data->o_arg.fmode)) |
1628 | goto unlock_no_action; | |
aac00a8d TM |
1629 | rcu_read_unlock(); |
1630 | } | |
95b72eb0 | 1631 | /* Update client id. */ |
549b19cc | 1632 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1633 | switch (data->o_arg.claim) { |
1634 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1635 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1636 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1637 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1638 | case NFS4_OPEN_CLAIM_FH: |
1639 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1640 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1641 | } | |
26e976a8 | 1642 | data->timestamp = jiffies; |
035168ab | 1643 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1644 | &data->o_arg.seq_args, |
2240a9e2 TM |
1645 | &data->o_res.seq_res, |
1646 | task) != 0) | |
1647 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1648 | |
1649 | /* Set the create mode (note dependency on the session type) */ | |
1650 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1651 | if (data->o_arg.open_flags & O_EXCL) { | |
1652 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1653 | if (nfs4_has_persistent_session(clp)) | |
1654 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1655 | else if (clp->cl_mvops->minor_version > 0) | |
1656 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1657 | } | |
6ee41268 | 1658 | return; |
652f89f6 TM |
1659 | unlock_no_action: |
1660 | rcu_read_unlock(); | |
6ee41268 TM |
1661 | out_no_action: |
1662 | task->tk_action = NULL; | |
c8da19b9 | 1663 | out_wait: |
b75ad4cd | 1664 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1665 | } |
1666 | ||
24ac23ab TM |
1667 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1668 | { | |
1669 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1670 | |
24ac23ab | 1671 | data->rpc_status = task->tk_status; |
d898528c | 1672 | |
14516c3a TM |
1673 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1674 | return; | |
d898528c | 1675 | |
24ac23ab | 1676 | if (task->tk_status == 0) { |
807d66d8 TM |
1677 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1678 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1679 | case S_IFREG: |
1680 | break; | |
1681 | case S_IFLNK: | |
24ac23ab | 1682 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1683 | break; |
1684 | case S_IFDIR: | |
24ac23ab | 1685 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1686 | break; |
1687 | default: | |
24ac23ab | 1688 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1689 | } |
6f926b5b | 1690 | } |
26e976a8 | 1691 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1692 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1693 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1694 | } |
3e309914 | 1695 | data->rpc_done = 1; |
24ac23ab | 1696 | } |
6f926b5b | 1697 | |
24ac23ab TM |
1698 | static void nfs4_open_release(void *calldata) |
1699 | { | |
1700 | struct nfs4_opendata *data = calldata; | |
1701 | struct nfs4_state *state = NULL; | |
1702 | ||
1703 | /* If this request hasn't been cancelled, do nothing */ | |
1704 | if (data->cancelled == 0) | |
1705 | goto out_free; | |
1706 | /* In case of error, no cleanup! */ | |
3e309914 | 1707 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1708 | goto out_free; |
1709 | /* In case we need an open_confirm, no cleanup! */ | |
1710 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1711 | goto out_free; | |
24ac23ab | 1712 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1713 | if (!IS_ERR(state)) |
643168c2 | 1714 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1715 | out_free: |
c6d00e63 | 1716 | nfs4_opendata_put(data); |
24ac23ab TM |
1717 | } |
1718 | ||
1719 | static const struct rpc_call_ops nfs4_open_ops = { | |
1720 | .rpc_call_prepare = nfs4_open_prepare, | |
1721 | .rpc_call_done = nfs4_open_done, | |
1722 | .rpc_release = nfs4_open_release, | |
1723 | }; | |
1724 | ||
b257957e | 1725 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1726 | { |
1727 | struct inode *dir = data->dir->d_inode; | |
1728 | struct nfs_server *server = NFS_SERVER(dir); | |
1729 | struct nfs_openargs *o_arg = &data->o_arg; | |
1730 | struct nfs_openres *o_res = &data->o_res; | |
1731 | struct rpc_task *task; | |
5138fde0 TM |
1732 | struct rpc_message msg = { |
1733 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1734 | .rpc_argp = o_arg, | |
1735 | .rpc_resp = o_res, | |
1736 | .rpc_cred = data->owner->so_cred, | |
1737 | }; | |
c970aa85 TM |
1738 | struct rpc_task_setup task_setup_data = { |
1739 | .rpc_client = server->client, | |
5138fde0 | 1740 | .rpc_message = &msg, |
c970aa85 TM |
1741 | .callback_ops = &nfs4_open_ops, |
1742 | .callback_data = data, | |
101070ca | 1743 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1744 | .flags = RPC_TASK_ASYNC, |
1745 | }; | |
24ac23ab TM |
1746 | int status; |
1747 | ||
9d12b216 | 1748 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1749 | kref_get(&data->kref); |
3e309914 TM |
1750 | data->rpc_done = 0; |
1751 | data->rpc_status = 0; | |
2ced46c2 | 1752 | data->cancelled = 0; |
bdeca1b7 TM |
1753 | data->is_recover = 0; |
1754 | if (isrecover) { | |
8fe72bac | 1755 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1756 | data->is_recover = 1; |
1757 | } | |
c970aa85 | 1758 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1759 | if (IS_ERR(task)) |
1760 | return PTR_ERR(task); | |
1761 | status = nfs4_wait_for_completion_rpc_task(task); | |
1762 | if (status != 0) { | |
1763 | data->cancelled = 1; | |
1764 | smp_wmb(); | |
1765 | } else | |
1766 | status = data->rpc_status; | |
1767 | rpc_put_task(task); | |
1768 | ||
1769 | return status; | |
1770 | } | |
1771 | ||
1772 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1773 | { | |
1774 | struct inode *dir = data->dir->d_inode; | |
1775 | struct nfs_openres *o_res = &data->o_res; | |
1776 | int status; | |
1777 | ||
1778 | status = nfs4_run_open_task(data, 1); | |
1779 | if (status != 0 || !data->rpc_done) | |
1780 | return status; | |
1781 | ||
6926afd1 TM |
1782 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1783 | ||
b257957e AB |
1784 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1785 | status = _nfs4_proc_open_confirm(data); | |
1786 | if (status != 0) | |
1787 | return status; | |
1788 | } | |
1789 | ||
1790 | return status; | |
1791 | } | |
1792 | ||
6168f62c WAA |
1793 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1794 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1795 | struct nfs4_state *state, fmode_t fmode, |
1796 | int openflags) | |
6168f62c WAA |
1797 | { |
1798 | struct nfs_access_entry cache; | |
1799 | u32 mask; | |
1800 | ||
1801 | /* access call failed or for some reason the server doesn't | |
1802 | * support any access modes -- defer access call until later */ | |
1803 | if (opendata->o_res.access_supported == 0) | |
1804 | return 0; | |
1805 | ||
1806 | mask = 0; | |
bbd3a8ee | 1807 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1808 | * write mode bits, but POSIX allows the creating process to write. |
1809 | * use openflags to check for exec, because fmode won't | |
1810 | * always have FMODE_EXEC set when file open for exec. */ | |
1811 | if (openflags & __FMODE_EXEC) { | |
1812 | /* ONLY check for exec rights */ | |
1813 | mask = MAY_EXEC; | |
1814 | } else if (fmode & FMODE_READ) | |
1815 | mask = MAY_READ; | |
6168f62c WAA |
1816 | |
1817 | cache.cred = cred; | |
1818 | cache.jiffies = jiffies; | |
1819 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1820 | nfs_access_add_cache(state->inode, &cache); | |
1821 | ||
bbd3a8ee | 1822 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1823 | return 0; |
1824 | ||
1825 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1826 | nfs4_close_state(state, fmode); | |
998f40b5 | 1827 | return -EACCES; |
6168f62c WAA |
1828 | } |
1829 | ||
b257957e AB |
1830 | /* |
1831 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1832 | */ | |
1833 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1834 | { | |
1835 | struct inode *dir = data->dir->d_inode; | |
1836 | struct nfs_server *server = NFS_SERVER(dir); | |
1837 | struct nfs_openargs *o_arg = &data->o_arg; | |
1838 | struct nfs_openres *o_res = &data->o_res; | |
1839 | int status; | |
1840 | ||
1841 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1842 | if (!data->rpc_done) |
1843 | return status; | |
1844 | if (status != 0) { | |
1845 | if (status == -NFS4ERR_BADNAME && | |
1846 | !(o_arg->open_flags & O_CREAT)) | |
1847 | return -ENOENT; | |
24ac23ab | 1848 | return status; |
08ef7bd3 | 1849 | } |
24ac23ab | 1850 | |
6926afd1 TM |
1851 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1852 | ||
90ff0c54 | 1853 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1854 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1855 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1856 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1857 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1858 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1859 | if (status != 0) |
24ac23ab | 1860 | return status; |
1da177e4 LT |
1861 | } |
1862 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1863 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1864 | return 0; |
1da177e4 LT |
1865 | } |
1866 | ||
d83217c1 AA |
1867 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1868 | { | |
1869 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1870 | } | |
1871 | ||
1da177e4 LT |
1872 | /* |
1873 | * OPEN_EXPIRED: | |
1874 | * reclaim state on the server after a network partition. | |
1875 | * Assumes caller holds the appropriate lock | |
1876 | */ | |
539cd03a | 1877 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1878 | { |
e56e0b78 | 1879 | struct nfs4_opendata *opendata; |
864472e9 | 1880 | int ret; |
1da177e4 | 1881 | |
4a1c0893 | 1882 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1883 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1884 | if (IS_ERR(opendata)) |
1885 | return PTR_ERR(opendata); | |
864472e9 | 1886 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1887 | if (ret == -ESTALE) |
3d4ff43d | 1888 | d_drop(ctx->dentry); |
c6d00e63 | 1889 | nfs4_opendata_put(opendata); |
864472e9 | 1890 | return ret; |
1da177e4 LT |
1891 | } |
1892 | ||
a9ed2e25 | 1893 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1894 | { |
539cd03a | 1895 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1896 | struct nfs4_exception exception = { }; |
1897 | int err; | |
1898 | ||
1899 | do { | |
539cd03a | 1900 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 1901 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
1902 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1903 | continue; | |
a9ed2e25 TM |
1904 | switch (err) { |
1905 | default: | |
1906 | goto out; | |
1907 | case -NFS4ERR_GRACE: | |
1908 | case -NFS4ERR_DELAY: | |
1909 | nfs4_handle_exception(server, err, &exception); | |
1910 | err = 0; | |
1911 | } | |
202b50dc | 1912 | } while (exception.retry); |
a9ed2e25 | 1913 | out: |
202b50dc TM |
1914 | return err; |
1915 | } | |
1916 | ||
1da177e4 LT |
1917 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1918 | { | |
1da177e4 | 1919 | struct nfs_open_context *ctx; |
864472e9 | 1920 | int ret; |
1da177e4 | 1921 | |
864472e9 TM |
1922 | ctx = nfs4_state_find_open_context(state); |
1923 | if (IS_ERR(ctx)) | |
91876b13 | 1924 | return -EAGAIN; |
539cd03a | 1925 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1926 | put_nfs_open_context(ctx); |
1927 | return ret; | |
1da177e4 LT |
1928 | } |
1929 | ||
f062eb6c | 1930 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1931 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1932 | { |
f062eb6c | 1933 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 1934 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
1935 | struct nfs_delegation *delegation; |
1936 | struct rpc_cred *cred = NULL; | |
1937 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
1938 | |
1939 | /* If a state reset has been done, test_stateid is unneeded */ | |
1940 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1941 | return; | |
1942 | ||
ab7cb0df TM |
1943 | /* Get the delegation credential for use by test/free_stateid */ |
1944 | rcu_read_lock(); | |
1945 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1946 | if (delegation != NULL && | |
1947 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
1948 | cred = get_rpccred(delegation->cred); | |
1949 | rcu_read_unlock(); | |
1950 | status = nfs41_test_stateid(server, stateid, cred); | |
1951 | } else | |
1952 | rcu_read_unlock(); | |
1953 | ||
3e60ffdd CL |
1954 | if (status != NFS_OK) { |
1955 | /* Free the stateid unless the server explicitly | |
1956 | * informs us the stateid is unrecognized. */ | |
1957 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1958 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 1959 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1960 | |
6938867e BS |
1961 | write_seqlock(&state->seqlock); |
1962 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1963 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1964 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1965 | } | |
ab7cb0df TM |
1966 | |
1967 | if (cred != NULL) | |
1968 | put_rpccred(cred); | |
3e60ffdd CL |
1969 | } |
1970 | ||
1971 | /** | |
1972 | * nfs41_check_open_stateid - possibly free an open stateid | |
1973 | * | |
1974 | * @state: NFSv4 state for an inode | |
1975 | * | |
1976 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1977 | * Otherwise a negative NFS4ERR value is returned. | |
1978 | */ | |
1979 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1980 | { | |
1981 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1982 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 1983 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
1984 | int status; |
1985 | ||
1986 | /* If a state reset has been done, test_stateid is unneeded */ | |
1987 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1988 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1989 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1990 | return -NFS4ERR_BAD_STATEID; | |
1991 | ||
ab7cb0df | 1992 | status = nfs41_test_stateid(server, stateid, cred); |
3e60ffdd CL |
1993 | if (status != NFS_OK) { |
1994 | /* Free the stateid unless the server explicitly | |
1995 | * informs us the stateid is unrecognized. */ | |
1996 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1997 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
1998 | |
1999 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2000 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2001 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2002 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2003 | } |
2004 | return status; | |
2005 | } | |
2006 | ||
2007 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2008 | { | |
eb64cf96 | 2009 | int status; |
b01dd1d8 | 2010 | |
3e60ffdd CL |
2011 | nfs41_clear_delegation_stateid(state); |
2012 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2013 | if (status != NFS_OK) |
2014 | status = nfs4_open_expired(sp, state); | |
2015 | return status; | |
f062eb6c BS |
2016 | } |
2017 | #endif | |
2018 | ||
aa53ed54 JL |
2019 | /* |
2020 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2021 | * fields corresponding to attributes that were used to store the verifier. | |
2022 | * Make sure we clobber those fields in the later setattr call | |
2023 | */ | |
2024 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2025 | { | |
2026 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2027 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2028 | sattr->ia_valid |= ATTR_ATIME; | |
2029 | ||
2030 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2031 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2032 | sattr->ia_valid |= ATTR_MTIME; | |
2033 | } | |
2034 | ||
c21443c2 TM |
2035 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2036 | fmode_t fmode, | |
2037 | int flags, | |
3efb9722 | 2038 | struct nfs_open_context *ctx) |
c21443c2 TM |
2039 | { |
2040 | struct nfs4_state_owner *sp = opendata->owner; | |
2041 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2042 | struct dentry *dentry; |
c21443c2 TM |
2043 | struct nfs4_state *state; |
2044 | unsigned int seq; | |
2045 | int ret; | |
2046 | ||
2047 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2048 | ||
2049 | ret = _nfs4_proc_open(opendata); | |
2050 | if (ret != 0) | |
2051 | goto out; | |
2052 | ||
2053 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2054 | ret = PTR_ERR(state); | |
2055 | if (IS_ERR(state)) | |
2056 | goto out; | |
2057 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2058 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2059 | ||
275bb307 TM |
2060 | dentry = opendata->dentry; |
2061 | if (dentry->d_inode == NULL) { | |
2062 | /* FIXME: Is this d_drop() ever needed? */ | |
2063 | d_drop(dentry); | |
2064 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2065 | if (dentry == NULL) { | |
2066 | dentry = opendata->dentry; | |
2067 | } else if (dentry != ctx->dentry) { | |
2068 | dput(ctx->dentry); | |
2069 | ctx->dentry = dget(dentry); | |
2070 | } | |
2071 | nfs_set_verifier(dentry, | |
2072 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2073 | } | |
2074 | ||
c21443c2 TM |
2075 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2076 | if (ret != 0) | |
2077 | goto out; | |
2078 | ||
3efb9722 | 2079 | ctx->state = state; |
c45ffdd2 TM |
2080 | if (dentry->d_inode == state->inode) { |
2081 | nfs_inode_attach_open_context(ctx); | |
2082 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2083 | nfs4_schedule_stateid_recovery(server, state); | |
2084 | } | |
c21443c2 TM |
2085 | out: |
2086 | return ret; | |
2087 | } | |
2088 | ||
1da177e4 | 2089 | /* |
24ac23ab | 2090 | * Returns a referenced nfs4_state |
1da177e4 | 2091 | */ |
82be417a | 2092 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2093 | struct nfs_open_context *ctx, |
82be417a AA |
2094 | int flags, |
2095 | struct iattr *sattr, | |
959d921f | 2096 | struct nfs4_label *label) |
1da177e4 LT |
2097 | { |
2098 | struct nfs4_state_owner *sp; | |
2099 | struct nfs4_state *state = NULL; | |
2100 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2101 | struct nfs4_opendata *opendata; |
4197a055 TM |
2102 | struct dentry *dentry = ctx->dentry; |
2103 | struct rpc_cred *cred = ctx->cred; | |
2104 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2105 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2106 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2107 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2108 | int status; |
1da177e4 LT |
2109 | |
2110 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2111 | status = -ENOMEM; |
d1e284d5 TM |
2112 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2113 | if (sp == NULL) { | |
1da177e4 LT |
2114 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2115 | goto out_err; | |
2116 | } | |
58d9714a TM |
2117 | status = nfs4_recover_expired_lease(server); |
2118 | if (status != 0) | |
b4454fe1 | 2119 | goto err_put_state_owner; |
82a2c1b7 AV |
2120 | if (dentry->d_inode != NULL) |
2121 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2122 | status = -ENOMEM; |
49f9a0fa TM |
2123 | if (dentry->d_inode) |
2124 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2125 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2126 | label, claim, GFP_KERNEL); |
e56e0b78 | 2127 | if (opendata == NULL) |
95d35cb4 | 2128 | goto err_put_state_owner; |
1da177e4 | 2129 | |
14c43f76 DQ |
2130 | if (label) { |
2131 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2132 | if (IS_ERR(olabel)) { | |
2133 | status = PTR_ERR(olabel); | |
2134 | goto err_opendata_put; | |
2135 | } | |
2136 | } | |
2137 | ||
82be417a AA |
2138 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2139 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2140 | if (!opendata->f_attr.mdsthreshold) | |
14c43f76 | 2141 | goto err_free_label; |
1549210f | 2142 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2143 | } |
82a2c1b7 AV |
2144 | if (dentry->d_inode != NULL) |
2145 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2146 | |
3efb9722 | 2147 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2148 | if (status != 0) |
14c43f76 | 2149 | goto err_free_label; |
3efb9722 | 2150 | state = ctx->state; |
6168f62c | 2151 | |
549b19cc TM |
2152 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2153 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2154 | nfs4_exclusive_attrset(opendata, sattr); |
2155 | ||
2156 | nfs_fattr_init(opendata->o_res.f_attr); | |
2157 | status = nfs4_do_setattr(state->inode, cred, | |
2158 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2159 | state, label, olabel); |
2160 | if (status == 0) { | |
0ab64e0e | 2161 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2162 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2163 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2164 | } |
0ab64e0e | 2165 | } |
82be417a AA |
2166 | |
2167 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2168 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2169 | else | |
2170 | kfree(opendata->f_attr.mdsthreshold); | |
2171 | opendata->f_attr.mdsthreshold = NULL; | |
2172 | ||
14c43f76 DQ |
2173 | nfs4_label_free(olabel); |
2174 | ||
c6d00e63 | 2175 | nfs4_opendata_put(opendata); |
1da177e4 | 2176 | nfs4_put_state_owner(sp); |
1da177e4 | 2177 | return 0; |
14c43f76 DQ |
2178 | err_free_label: |
2179 | nfs4_label_free(olabel); | |
c6d00e63 | 2180 | err_opendata_put: |
82be417a | 2181 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2182 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2183 | err_put_state_owner: |
2184 | nfs4_put_state_owner(sp); | |
1da177e4 | 2185 | out_err: |
1da177e4 LT |
2186 | return status; |
2187 | } | |
2188 | ||
2189 | ||
82be417a | 2190 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2191 | struct nfs_open_context *ctx, |
82be417a AA |
2192 | int flags, |
2193 | struct iattr *sattr, | |
959d921f | 2194 | struct nfs4_label *label) |
1da177e4 | 2195 | { |
49f9a0fa | 2196 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2197 | struct nfs4_exception exception = { }; |
2198 | struct nfs4_state *res; | |
2199 | int status; | |
2200 | ||
2201 | do { | |
959d921f | 2202 | status = _nfs4_do_open(dir, ctx, flags, sattr, label); |
3efb9722 | 2203 | res = ctx->state; |
42113a75 | 2204 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2205 | if (status == 0) |
2206 | break; | |
2207 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2208 | * book-keeping w.r.t. state-changing operations | |
2209 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2210 | * It is actually a sign of a bug on the client or on the server. | |
2211 | * | |
2212 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2213 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2214 | * have unhashed the old state_owner for us, and that we can |
2215 | * therefore safely retry using a new one. We should still warn | |
2216 | * the user though... | |
2217 | */ | |
2218 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2219 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2220 | " returned a bad sequence-id error!\n", |
2221 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2222 | exception.retry = 1; |
2223 | continue; | |
2224 | } | |
550f5747 TM |
2225 | /* |
2226 | * BAD_STATEID on OPEN means that the server cancelled our | |
2227 | * state before it received the OPEN_CONFIRM. | |
2228 | * Recover by retrying the request as per the discussion | |
2229 | * on Page 181 of RFC3530. | |
2230 | */ | |
2231 | if (status == -NFS4ERR_BAD_STATEID) { | |
2232 | exception.retry = 1; | |
2233 | continue; | |
2234 | } | |
aac00a8d TM |
2235 | if (status == -EAGAIN) { |
2236 | /* We must have found a delegation */ | |
2237 | exception.retry = 1; | |
2238 | continue; | |
2239 | } | |
49f9a0fa TM |
2240 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2241 | continue; | |
2242 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2243 | status, &exception)); |
2244 | } while (exception.retry); | |
2245 | return res; | |
2246 | } | |
2247 | ||
659bfcd6 TM |
2248 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2249 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2250 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2251 | struct nfs4_label *olabel) | |
1da177e4 | 2252 | { |
3e4f6290 | 2253 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2254 | struct nfs_setattrargs arg = { |
3e4f6290 | 2255 | .fh = NFS_FH(inode), |
1da177e4 LT |
2256 | .iap = sattr, |
2257 | .server = server, | |
2258 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2259 | .label = ilabel, |
1da177e4 LT |
2260 | }; |
2261 | struct nfs_setattrres res = { | |
2262 | .fattr = fattr, | |
1775fd3e | 2263 | .label = olabel, |
1da177e4 LT |
2264 | .server = server, |
2265 | }; | |
2266 | struct rpc_message msg = { | |
659bfcd6 TM |
2267 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2268 | .rpc_argp = &arg, | |
2269 | .rpc_resp = &res, | |
2270 | .rpc_cred = cred, | |
1da177e4 | 2271 | }; |
26e976a8 | 2272 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2273 | fmode_t fmode; |
2274 | bool truncate; | |
65e4308d | 2275 | int status; |
1da177e4 | 2276 | |
aa9c2669 DQ |
2277 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2278 | if (ilabel) | |
2279 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2280 | ||
0e574af1 | 2281 | nfs_fattr_init(fattr); |
1da177e4 | 2282 | |
ee3ae84e TM |
2283 | /* Servers should only apply open mode checks for file size changes */ |
2284 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2285 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2286 | ||
2287 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2288 | /* Use that stateid */ | |
2289 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2290 | struct nfs_lockowner lockowner = { |
2291 | .l_owner = current->files, | |
2292 | .l_pid = current->tgid, | |
2293 | }; | |
4fc8796d | 2294 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2295 | &lockowner); |
08e9eac4 | 2296 | } else |
f597c537 | 2297 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2298 | |
7c513058 | 2299 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2300 | if (status == 0 && state != NULL) |
2301 | renew_lease(server, timestamp); | |
65e4308d | 2302 | return status; |
1da177e4 LT |
2303 | } |
2304 | ||
659bfcd6 TM |
2305 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2306 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2307 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2308 | struct nfs4_label *olabel) | |
1da177e4 | 2309 | { |
3e4f6290 | 2310 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2311 | struct nfs4_exception exception = { |
2312 | .state = state, | |
3114ea7a | 2313 | .inode = inode, |
a1d0b5ee | 2314 | }; |
1da177e4 LT |
2315 | int err; |
2316 | do { | |
1775fd3e | 2317 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
451146be TM |
2318 | switch (err) { |
2319 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2320 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2321 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2322 | "applying open mode checks to " | |
2323 | "a SETATTR that is not " | |
2324 | "changing file size.\n", | |
2325 | server->nfs_client->cl_hostname); | |
2326 | } | |
451146be TM |
2327 | if (state && !(state->state & FMODE_WRITE)) { |
2328 | err = -EBADF; | |
2329 | if (sattr->ia_valid & ATTR_OPEN) | |
2330 | err = -EACCES; | |
2331 | goto out; | |
2332 | } | |
2333 | } | |
2334 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2335 | } while (exception.retry); |
451146be | 2336 | out: |
1da177e4 LT |
2337 | return err; |
2338 | } | |
2339 | ||
2340 | struct nfs4_closedata { | |
2341 | struct inode *inode; | |
2342 | struct nfs4_state *state; | |
2343 | struct nfs_closeargs arg; | |
2344 | struct nfs_closeres res; | |
516a6af6 | 2345 | struct nfs_fattr fattr; |
26e976a8 | 2346 | unsigned long timestamp; |
f7e8917a FI |
2347 | bool roc; |
2348 | u32 roc_barrier; | |
1da177e4 LT |
2349 | }; |
2350 | ||
963d8fe5 | 2351 | static void nfs4_free_closedata(void *data) |
9512135d | 2352 | { |
963d8fe5 TM |
2353 | struct nfs4_closedata *calldata = data; |
2354 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2355 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2356 | |
f7e8917a FI |
2357 | if (calldata->roc) |
2358 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2359 | nfs4_put_open_state(calldata->state); |
2360 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2361 | nfs4_put_state_owner(sp); |
322b2b90 | 2362 | nfs_sb_deactive(sb); |
9512135d TM |
2363 | kfree(calldata); |
2364 | } | |
2365 | ||
88069f77 TM |
2366 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2367 | fmode_t fmode) | |
2368 | { | |
2369 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2370 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2371 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2372 | case FMODE_WRITE: | |
88069f77 | 2373 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2374 | break; |
2375 | case FMODE_READ: | |
88069f77 | 2376 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2377 | break; |
2378 | case 0: | |
2379 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2380 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2381 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2382 | } | |
88069f77 TM |
2383 | spin_unlock(&state->owner->so_lock); |
2384 | } | |
2385 | ||
963d8fe5 | 2386 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2387 | { |
963d8fe5 | 2388 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2389 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2390 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2391 | ||
a3ca5651 | 2392 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2393 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2394 | return; | |
42113a75 | 2395 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2396 | /* hmm. we are done with the inode, and in the process of freeing |
2397 | * the state_owner. we keep this around to process errors | |
2398 | */ | |
1da177e4 LT |
2399 | switch (task->tk_status) { |
2400 | case 0: | |
f7e8917a FI |
2401 | if (calldata->roc) |
2402 | pnfs_roc_set_barrier(state->inode, | |
2403 | calldata->roc_barrier); | |
45328c35 | 2404 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2405 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2406 | nfs4_close_clear_stateid_flags(state, |
2407 | calldata->arg.fmode); | |
1da177e4 LT |
2408 | break; |
2409 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2410 | case -NFS4ERR_OLD_STATEID: |
2411 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2412 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2413 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2414 | break; |
1da177e4 | 2415 | default: |
72211dbe TM |
2416 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2417 | rpc_restart_call_prepare(task); | |
1da177e4 | 2418 | } |
72211dbe | 2419 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2420 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2421 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2422 | } |
2423 | ||
4ce70ada | 2424 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2425 | { |
4ce70ada | 2426 | struct nfs4_closedata *calldata = data; |
9512135d | 2427 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2428 | struct inode *inode = calldata->inode; |
88069f77 | 2429 | int call_close = 0; |
9512135d | 2430 | |
a3ca5651 | 2431 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2432 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2433 | goto out_wait; |
003707c7 | 2434 | |
88069f77 TM |
2435 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2436 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2437 | spin_lock(&state->owner->so_lock); |
003707c7 | 2438 | /* Calculate the change in open mode */ |
e7616923 | 2439 | if (state->n_rdwr == 0) { |
003707c7 | 2440 | if (state->n_rdonly == 0) { |
88069f77 TM |
2441 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2442 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2443 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2444 | } |
2445 | if (state->n_wronly == 0) { | |
88069f77 TM |
2446 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2447 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2448 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2449 | } |
e7616923 | 2450 | } |
5d422301 TM |
2451 | if (!nfs4_valid_open_stateid(state)) |
2452 | call_close = 0; | |
4cecb76f | 2453 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2454 | |
2455 | if (!call_close) { | |
963d8fe5 | 2456 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2457 | goto out_no_action; |
9512135d | 2458 | } |
88069f77 | 2459 | |
f7e8917a | 2460 | if (calldata->arg.fmode == 0) { |
88069f77 | 2461 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2462 | if (calldata->roc && |
b9536ad5 AA |
2463 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2464 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2465 | goto out_wait; |
b9536ad5 | 2466 | } |
f7e8917a | 2467 | } |
88069f77 | 2468 | |
516a6af6 | 2469 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2470 | calldata->timestamp = jiffies; |
7fdab069 | 2471 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2472 | &calldata->arg.seq_args, |
2473 | &calldata->res.seq_res, | |
2240a9e2 TM |
2474 | task) != 0) |
2475 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2476 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2477 | return; |
2478 | out_no_action: | |
2479 | task->tk_action = NULL; | |
2480 | out_wait: | |
2481 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2482 | } |
2483 | ||
963d8fe5 | 2484 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2485 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2486 | .rpc_call_done = nfs4_close_done, |
2487 | .rpc_release = nfs4_free_closedata, | |
2488 | }; | |
2489 | ||
1da177e4 LT |
2490 | /* |
2491 | * It is possible for data to be read/written from a mem-mapped file | |
2492 | * after the sys_close call (which hits the vfs layer as a flush). | |
2493 | * This means that we can't safely call nfsv4 close on a file until | |
2494 | * the inode is cleared. This in turn means that we are not good | |
2495 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2496 | * share state even when we are done with one of the three share | |
2497 | * stateid's in the inode. | |
2498 | * | |
2499 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2500 | */ | |
1f7977c1 | 2501 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2502 | { |
4a35bd41 | 2503 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2504 | struct nfs4_closedata *calldata; |
b39e625b TM |
2505 | struct nfs4_state_owner *sp = state->owner; |
2506 | struct rpc_task *task; | |
5138fde0 TM |
2507 | struct rpc_message msg = { |
2508 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2509 | .rpc_cred = state->owner->so_cred, | |
2510 | }; | |
c970aa85 TM |
2511 | struct rpc_task_setup task_setup_data = { |
2512 | .rpc_client = server->client, | |
5138fde0 | 2513 | .rpc_message = &msg, |
c970aa85 | 2514 | .callback_ops = &nfs4_close_ops, |
101070ca | 2515 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2516 | .flags = RPC_TASK_ASYNC, |
2517 | }; | |
9512135d | 2518 | int status = -ENOMEM; |
1da177e4 | 2519 | |
8535b2be | 2520 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2521 | if (calldata == NULL) |
9512135d | 2522 | goto out; |
9d12b216 | 2523 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2524 | calldata->inode = state->inode; |
1da177e4 | 2525 | calldata->state = state; |
4a35bd41 | 2526 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2527 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2528 | /* Serialization for the sequence id */ |
8535b2be | 2529 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2530 | if (calldata->arg.seqid == NULL) |
2531 | goto out_free_calldata; | |
dc0b027d | 2532 | calldata->arg.fmode = 0; |
a65318bf | 2533 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2534 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2535 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2536 | calldata->res.server = server; |
1f7977c1 | 2537 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2538 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2539 | |
1174dd1f TM |
2540 | msg.rpc_argp = &calldata->arg; |
2541 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2542 | task_setup_data.callback_data = calldata; |
2543 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2544 | if (IS_ERR(task)) |
2545 | return PTR_ERR(task); | |
a49c3c77 TM |
2546 | status = 0; |
2547 | if (wait) | |
2548 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2549 | rpc_put_task(task); |
a49c3c77 | 2550 | return status; |
9512135d TM |
2551 | out_free_calldata: |
2552 | kfree(calldata); | |
2553 | out: | |
b39e625b TM |
2554 | nfs4_put_open_state(state); |
2555 | nfs4_put_state_owner(sp); | |
9512135d | 2556 | return status; |
1da177e4 LT |
2557 | } |
2558 | ||
2b484297 | 2559 | static struct inode * |
cd9a1c0e | 2560 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2561 | { |
1da177e4 | 2562 | struct nfs4_state *state; |
aa9c2669 DQ |
2563 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2564 | ||
2565 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2566 | |
565277f6 | 2567 | /* Protect against concurrent sillydeletes */ |
959d921f | 2568 | state = nfs4_do_open(dir, ctx, open_flags, attr, label); |
aa9c2669 DQ |
2569 | |
2570 | nfs4_label_release_security(label); | |
2571 | ||
f46e0bd3 TM |
2572 | if (IS_ERR(state)) |
2573 | return ERR_CAST(state); | |
275bb307 | 2574 | return state->inode; |
1da177e4 LT |
2575 | } |
2576 | ||
1185a552 | 2577 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2578 | { |
2579 | if (ctx->state == NULL) | |
2580 | return; | |
2581 | if (is_sync) | |
643168c2 | 2582 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2583 | else |
643168c2 | 2584 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2585 | } |
1da177e4 LT |
2586 | |
2587 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2588 | { | |
43652ad5 BH |
2589 | struct nfs4_server_caps_arg args = { |
2590 | .fhandle = fhandle, | |
2591 | }; | |
1da177e4 LT |
2592 | struct nfs4_server_caps_res res = {}; |
2593 | struct rpc_message msg = { | |
2594 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2595 | .rpc_argp = &args, |
1da177e4 LT |
2596 | .rpc_resp = &res, |
2597 | }; | |
2598 | int status; | |
2599 | ||
7c513058 | 2600 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2601 | if (status == 0) { |
2602 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2603 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2604 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2605 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2606 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2607 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2608 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2609 | server->caps |= NFS_CAP_ACLS; | |
2610 | if (res.has_links != 0) | |
2611 | server->caps |= NFS_CAP_HARDLINKS; | |
2612 | if (res.has_symlinks != 0) | |
2613 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2614 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2615 | server->caps |= NFS_CAP_FILEID; | |
2616 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2617 | server->caps |= NFS_CAP_MODE; | |
2618 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2619 | server->caps |= NFS_CAP_NLINK; | |
2620 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2621 | server->caps |= NFS_CAP_OWNER; | |
2622 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2623 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2624 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2625 | server->caps |= NFS_CAP_ATIME; | |
2626 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2627 | server->caps |= NFS_CAP_CTIME; | |
2628 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2629 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2630 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2631 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2632 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2633 | #endif | |
2634 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2635 | sizeof(server->attr_bitmask)); | |
62ab460c | 2636 | |
aa9c2669 DQ |
2637 | if (server->caps & NFS_CAP_SECURITY_LABEL) { |
2638 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2639 | res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2640 | } | |
a65318bf TM |
2641 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2642 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2643 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2644 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2645 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2646 | } |
cccef3b9 | 2647 | |
1da177e4 LT |
2648 | return status; |
2649 | } | |
2650 | ||
55a97593 | 2651 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2652 | { |
2653 | struct nfs4_exception exception = { }; | |
2654 | int err; | |
2655 | do { | |
2656 | err = nfs4_handle_exception(server, | |
2657 | _nfs4_server_capabilities(server, fhandle), | |
2658 | &exception); | |
2659 | } while (exception.retry); | |
2660 | return err; | |
2661 | } | |
2662 | ||
2663 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2664 | struct nfs_fsinfo *info) | |
2665 | { | |
aa9c2669 | 2666 | u32 bitmask[3]; |
1da177e4 | 2667 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2668 | .bitmask = bitmask, |
1da177e4 LT |
2669 | }; |
2670 | struct nfs4_lookup_res res = { | |
2671 | .server = server, | |
0e574af1 | 2672 | .fattr = info->fattr, |
1da177e4 LT |
2673 | .fh = fhandle, |
2674 | }; | |
2675 | struct rpc_message msg = { | |
2676 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2677 | .rpc_argp = &args, | |
2678 | .rpc_resp = &res, | |
2679 | }; | |
008f55d0 | 2680 | |
aa9c2669 DQ |
2681 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2682 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2683 | /* | |
2684 | * Process the label in the upcoming getfattr | |
2685 | */ | |
2686 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2687 | ||
0e574af1 | 2688 | nfs_fattr_init(info->fattr); |
7c513058 | 2689 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2690 | } |
2691 | ||
2692 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2693 | struct nfs_fsinfo *info) | |
2694 | { | |
2695 | struct nfs4_exception exception = { }; | |
2696 | int err; | |
2697 | do { | |
fb8a5ba8 BS |
2698 | err = _nfs4_lookup_root(server, fhandle, info); |
2699 | switch (err) { | |
2700 | case 0: | |
2701 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2702 | goto out; |
fb8a5ba8 BS |
2703 | default: |
2704 | err = nfs4_handle_exception(server, err, &exception); | |
2705 | } | |
1da177e4 | 2706 | } while (exception.retry); |
05e9cfb4 | 2707 | out: |
1da177e4 LT |
2708 | return err; |
2709 | } | |
2710 | ||
8f70e95f BS |
2711 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2712 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2713 | { | |
2714 | struct rpc_auth *auth; | |
2715 | int ret; | |
2716 | ||
2717 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2718 | if (IS_ERR(auth)) { |
75bc8821 | 2719 | ret = -EACCES; |
8f70e95f BS |
2720 | goto out; |
2721 | } | |
2722 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2723 | out: |
2724 | return ret; | |
2725 | } | |
2726 | ||
9a744ba3 CL |
2727 | /* |
2728 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2729 | * | |
2730 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2731 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2732 | * | |
2733 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2734 | * negative errno value. | |
2735 | */ | |
801a16dc | 2736 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2737 | struct nfs_fsinfo *info) |
1da177e4 | 2738 | { |
9a744ba3 CL |
2739 | /* Per 3530bis 15.33.5 */ |
2740 | static const rpc_authflavor_t flav_array[] = { | |
2741 | RPC_AUTH_GSS_KRB5P, | |
2742 | RPC_AUTH_GSS_KRB5I, | |
2743 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2744 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2745 | RPC_AUTH_NULL, |
2746 | }; | |
2747 | int status = -EPERM; | |
2748 | size_t i; | |
6a1a1e34 | 2749 | |
9a744ba3 | 2750 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2751 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2752 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2753 | continue; |
2754 | break; | |
8f70e95f | 2755 | } |
9a744ba3 | 2756 | |
fb8a5ba8 BS |
2757 | /* |
2758 | * -EACCESS could mean that the user doesn't have correct permissions | |
2759 | * to access the mount. It could also mean that we tried to mount | |
2760 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2761 | * existing mount programs don't handle -EACCES very well so it should | |
2762 | * be mapped to -EPERM instead. | |
2763 | */ | |
2764 | if (status == -EACCES) | |
2765 | status = -EPERM; | |
801a16dc BS |
2766 | return status; |
2767 | } | |
2768 | ||
2ed4b95b CL |
2769 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2770 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2771 | { | |
2772 | int mv = server->nfs_client->cl_minorversion; | |
2773 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2774 | } | |
2775 | ||
2776 | /** | |
2777 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2778 | * @server: initialized nfs_server handle | |
2779 | * @fhandle: we fill in the pseudo-fs root file handle | |
2780 | * @info: we fill in an FSINFO struct | |
2781 | * | |
2782 | * Returns zero on success, or a negative errno. | |
801a16dc | 2783 | */ |
3028eb2b BS |
2784 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2785 | struct nfs_fsinfo *info) | |
801a16dc | 2786 | { |
2ed4b95b CL |
2787 | int status; |
2788 | ||
2789 | status = nfs4_lookup_root(server, fhandle, info); | |
2790 | if ((status == -NFS4ERR_WRONGSEC) && | |
2791 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2792 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2793 | ||
1da177e4 LT |
2794 | if (status == 0) |
2795 | status = nfs4_server_capabilities(server, fhandle); | |
2796 | if (status == 0) | |
2797 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2798 | |
c12e87f4 | 2799 | return nfs4_map_errors(status); |
1da177e4 LT |
2800 | } |
2801 | ||
bae36241 BS |
2802 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2803 | struct nfs_fsinfo *info) | |
2804 | { | |
2805 | int error; | |
2806 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2807 | struct nfs4_label *label = NULL; |
bae36241 BS |
2808 | |
2809 | error = nfs4_server_capabilities(server, mntfh); | |
2810 | if (error < 0) { | |
2811 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2812 | return error; | |
2813 | } | |
2814 | ||
14c43f76 DQ |
2815 | label = nfs4_label_alloc(server, GFP_KERNEL); |
2816 | if (IS_ERR(label)) | |
2817 | return PTR_ERR(label); | |
2818 | ||
1775fd3e | 2819 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2820 | if (error < 0) { |
2821 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 2822 | goto err_free_label; |
bae36241 BS |
2823 | } |
2824 | ||
2825 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2826 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2827 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2828 | ||
14c43f76 DQ |
2829 | err_free_label: |
2830 | nfs4_label_free(label); | |
2831 | ||
bae36241 BS |
2832 | return error; |
2833 | } | |
2834 | ||
6b97fd3d MN |
2835 | /* |
2836 | * Get locations and (maybe) other attributes of a referral. | |
2837 | * Note that we'll actually follow the referral later when | |
2838 | * we detect fsid mismatch in inode revalidation | |
2839 | */ | |
f05d147f BS |
2840 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2841 | const struct qstr *name, struct nfs_fattr *fattr, | |
2842 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2843 | { |
2844 | int status = -ENOMEM; | |
2845 | struct page *page = NULL; | |
2846 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2847 | |
2848 | page = alloc_page(GFP_KERNEL); | |
2849 | if (page == NULL) | |
2850 | goto out; | |
2851 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2852 | if (locations == NULL) | |
2853 | goto out; | |
2854 | ||
f05d147f | 2855 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2856 | if (status != 0) |
2857 | goto out; | |
2858 | /* Make sure server returned a different fsid for the referral */ | |
2859 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2860 | dprintk("%s: server did not return a different fsid for" |
2861 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2862 | status = -EIO; |
2863 | goto out; | |
2864 | } | |
533eb461 AA |
2865 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2866 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2867 | |
533eb461 | 2868 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2869 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2870 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2871 | out: | |
2872 | if (page) | |
2873 | __free_page(page); | |
5d7ca35a | 2874 | kfree(locations); |
6b97fd3d MN |
2875 | return status; |
2876 | } | |
2877 | ||
1775fd3e DQ |
2878 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2879 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2880 | { |
2881 | struct nfs4_getattr_arg args = { | |
2882 | .fh = fhandle, | |
2883 | .bitmask = server->attr_bitmask, | |
2884 | }; | |
2885 | struct nfs4_getattr_res res = { | |
2886 | .fattr = fattr, | |
1775fd3e | 2887 | .label = label, |
1da177e4 LT |
2888 | .server = server, |
2889 | }; | |
2890 | struct rpc_message msg = { | |
2891 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2892 | .rpc_argp = &args, | |
2893 | .rpc_resp = &res, | |
2894 | }; | |
aa9c2669 DQ |
2895 | |
2896 | args.bitmask = nfs4_bitmask(server, label); | |
2897 | ||
0e574af1 | 2898 | nfs_fattr_init(fattr); |
7c513058 | 2899 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2900 | } |
2901 | ||
1775fd3e DQ |
2902 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2903 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2904 | { |
2905 | struct nfs4_exception exception = { }; | |
2906 | int err; | |
2907 | do { | |
2908 | err = nfs4_handle_exception(server, | |
1775fd3e | 2909 | _nfs4_proc_getattr(server, fhandle, fattr, label), |
1da177e4 LT |
2910 | &exception); |
2911 | } while (exception.retry); | |
2912 | return err; | |
2913 | } | |
2914 | ||
2915 | /* | |
2916 | * The file is not closed if it is opened due to the a request to change | |
2917 | * the size of the file. The open call will not be needed once the | |
2918 | * VFS layer lookup-intents are implemented. | |
2919 | * | |
2920 | * Close is called when the inode is destroyed. | |
2921 | * If we haven't opened the file for O_WRONLY, we | |
2922 | * need to in the size_change case to obtain a stateid. | |
2923 | * | |
2924 | * Got race? | |
2925 | * Because OPEN is always done by name in nfsv4, it is | |
2926 | * possible that we opened a different file by the same | |
2927 | * name. We can recognize this race condition, but we | |
2928 | * can't do anything about it besides returning an error. | |
2929 | * | |
2930 | * This will be fixed with VFS changes (lookup-intent). | |
2931 | */ | |
2932 | static int | |
2933 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2934 | struct iattr *sattr) | |
2935 | { | |
08e9eac4 | 2936 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2937 | struct rpc_cred *cred = NULL; |
d530838b | 2938 | struct nfs4_state *state = NULL; |
14c43f76 | 2939 | struct nfs4_label *label = NULL; |
1da177e4 LT |
2940 | int status; |
2941 | ||
8a1636c4 | 2942 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2943 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2944 | |
0e574af1 | 2945 | nfs_fattr_init(fattr); |
1da177e4 | 2946 | |
2669940d AA |
2947 | /* Deal with open(O_TRUNC) */ |
2948 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 2949 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
2950 | |
2951 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 2952 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
2953 | return 0; |
2954 | ||
d530838b | 2955 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2956 | if (sattr->ia_valid & ATTR_FILE) { |
2957 | struct nfs_open_context *ctx; | |
2958 | ||
2959 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2960 | if (ctx) { |
2961 | cred = ctx->cred; | |
2962 | state = ctx->state; | |
2963 | } | |
659bfcd6 | 2964 | } |
08e9eac4 | 2965 | |
14c43f76 DQ |
2966 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
2967 | if (IS_ERR(label)) | |
2968 | return PTR_ERR(label); | |
2969 | ||
2970 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 2971 | if (status == 0) { |
65e4308d | 2972 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
2973 | nfs_setsecurity(inode, fattr, label); |
2974 | } | |
14c43f76 | 2975 | nfs4_label_free(label); |
1da177e4 LT |
2976 | return status; |
2977 | } | |
2978 | ||
0c2e53f1 TM |
2979 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2980 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 2981 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 2982 | { |
0c2e53f1 | 2983 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2984 | int status; |
2985 | struct nfs4_lookup_arg args = { | |
2986 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2987 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2988 | .name = name, |
2989 | }; | |
2990 | struct nfs4_lookup_res res = { | |
2991 | .server = server, | |
2992 | .fattr = fattr, | |
aa9c2669 | 2993 | .label = label, |
2b3de441 DH |
2994 | .fh = fhandle, |
2995 | }; | |
2996 | struct rpc_message msg = { | |
2997 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2998 | .rpc_argp = &args, | |
2999 | .rpc_resp = &res, | |
3000 | }; | |
3001 | ||
aa9c2669 DQ |
3002 | args.bitmask = nfs4_bitmask(server, label); |
3003 | ||
2b3de441 DH |
3004 | nfs_fattr_init(fattr); |
3005 | ||
1da177e4 | 3006 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3007 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3008 | dprintk("NFS reply lookup: %d\n", status); |
3009 | return status; | |
3010 | } | |
3011 | ||
72de53ec | 3012 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3013 | { |
7ebb9315 | 3014 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3015 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3016 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3017 | fattr->nlink = 2; | |
3018 | } | |
3019 | ||
72de53ec BS |
3020 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3021 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3022 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3023 | { |
3024 | struct nfs4_exception exception = { }; | |
72de53ec | 3025 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3026 | int err; |
3027 | do { | |
1775fd3e | 3028 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
72de53ec | 3029 | switch (err) { |
08ef7bd3 | 3030 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3031 | err = -ENOENT; |
3032 | goto out; | |
0c2e53f1 | 3033 | case -NFS4ERR_MOVED: |
f05d147f | 3034 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3035 | goto out; |
0c2e53f1 | 3036 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3037 | err = -EPERM; |
3038 | if (client != *clnt) | |
3039 | goto out; | |
3040 | ||
3041 | client = nfs4_create_sec_client(client, dir, name); | |
3042 | if (IS_ERR(client)) | |
3043 | return PTR_ERR(client); | |
3044 | ||
3045 | exception.retry = 1; | |
3046 | break; | |
3047 | default: | |
3048 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3049 | } |
1da177e4 | 3050 | } while (exception.retry); |
72de53ec BS |
3051 | |
3052 | out: | |
3053 | if (err == 0) | |
3054 | *clnt = client; | |
3055 | else if (client != *clnt) | |
3056 | rpc_shutdown_client(client); | |
3057 | ||
1da177e4 LT |
3058 | return err; |
3059 | } | |
3060 | ||
80a16b21 | 3061 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3062 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3063 | struct nfs4_label *label) | |
72de53ec BS |
3064 | { |
3065 | int status; | |
3066 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3067 | ||
1775fd3e | 3068 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3069 | if (client != NFS_CLIENT(dir)) { |
3070 | rpc_shutdown_client(client); | |
3071 | nfs_fixup_secinfo_attributes(fattr); | |
3072 | } | |
3073 | return status; | |
3074 | } | |
3075 | ||
f05d147f BS |
3076 | struct rpc_clnt * |
3077 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3078 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3079 | { | |
3080 | int status; | |
3081 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
3082 | ||
1775fd3e | 3083 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
f05d147f BS |
3084 | if (status < 0) { |
3085 | rpc_shutdown_client(client); | |
3086 | return ERR_PTR(status); | |
3087 | } | |
3088 | return client; | |
3089 | } | |
3090 | ||
1da177e4 LT |
3091 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3092 | { | |
76b32999 | 3093 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3094 | struct nfs4_accessargs args = { |
3095 | .fh = NFS_FH(inode), | |
a4980e78 | 3096 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3097 | }; |
3098 | struct nfs4_accessres res = { | |
3099 | .server = server, | |
1da177e4 | 3100 | }; |
1da177e4 LT |
3101 | struct rpc_message msg = { |
3102 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3103 | .rpc_argp = &args, | |
3104 | .rpc_resp = &res, | |
3105 | .rpc_cred = entry->cred, | |
3106 | }; | |
3107 | int mode = entry->mask; | |
aa9c2669 | 3108 | int status = 0; |
1da177e4 LT |
3109 | |
3110 | /* | |
3111 | * Determine which access bits we want to ask for... | |
3112 | */ | |
3113 | if (mode & MAY_READ) | |
3114 | args.access |= NFS4_ACCESS_READ; | |
3115 | if (S_ISDIR(inode->i_mode)) { | |
3116 | if (mode & MAY_WRITE) | |
3117 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3118 | if (mode & MAY_EXEC) | |
3119 | args.access |= NFS4_ACCESS_LOOKUP; | |
3120 | } else { | |
3121 | if (mode & MAY_WRITE) | |
3122 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3123 | if (mode & MAY_EXEC) | |
3124 | args.access |= NFS4_ACCESS_EXECUTE; | |
3125 | } | |
c407d41a TM |
3126 | |
3127 | res.fattr = nfs_alloc_fattr(); | |
3128 | if (res.fattr == NULL) | |
3129 | return -ENOMEM; | |
3130 | ||
7c513058 | 3131 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3132 | if (!status) { |
6168f62c | 3133 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3134 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3135 | } |
c407d41a | 3136 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3137 | return status; |
3138 | } | |
3139 | ||
3140 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3141 | { | |
3142 | struct nfs4_exception exception = { }; | |
3143 | int err; | |
3144 | do { | |
3145 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3146 | _nfs4_proc_access(inode, entry), | |
3147 | &exception); | |
3148 | } while (exception.retry); | |
3149 | return err; | |
3150 | } | |
3151 | ||
3152 | /* | |
3153 | * TODO: For the time being, we don't try to get any attributes | |
3154 | * along with any of the zero-copy operations READ, READDIR, | |
3155 | * READLINK, WRITE. | |
3156 | * | |
3157 | * In the case of the first three, we want to put the GETATTR | |
3158 | * after the read-type operation -- this is because it is hard | |
3159 | * to predict the length of a GETATTR response in v4, and thus | |
3160 | * align the READ data correctly. This means that the GETATTR | |
3161 | * may end up partially falling into the page cache, and we should | |
3162 | * shift it into the 'tail' of the xdr_buf before processing. | |
3163 | * To do this efficiently, we need to know the total length | |
3164 | * of data received, which doesn't seem to be available outside | |
3165 | * of the RPC layer. | |
3166 | * | |
3167 | * In the case of WRITE, we also want to put the GETATTR after | |
3168 | * the operation -- in this case because we want to make sure | |
140150db | 3169 | * we get the post-operation mtime and size. |
1da177e4 LT |
3170 | * |
3171 | * Both of these changes to the XDR layer would in fact be quite | |
3172 | * minor, but I decided to leave them for a subsequent patch. | |
3173 | */ | |
3174 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3175 | unsigned int pgbase, unsigned int pglen) | |
3176 | { | |
3177 | struct nfs4_readlink args = { | |
3178 | .fh = NFS_FH(inode), | |
3179 | .pgbase = pgbase, | |
3180 | .pglen = pglen, | |
3181 | .pages = &page, | |
3182 | }; | |
f50c7000 | 3183 | struct nfs4_readlink_res res; |
1da177e4 LT |
3184 | struct rpc_message msg = { |
3185 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3186 | .rpc_argp = &args, | |
f50c7000 | 3187 | .rpc_resp = &res, |
1da177e4 LT |
3188 | }; |
3189 | ||
7c513058 | 3190 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3191 | } |
3192 | ||
3193 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3194 | unsigned int pgbase, unsigned int pglen) | |
3195 | { | |
3196 | struct nfs4_exception exception = { }; | |
3197 | int err; | |
3198 | do { | |
3199 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3200 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
3201 | &exception); | |
3202 | } while (exception.retry); | |
3203 | return err; | |
3204 | } | |
3205 | ||
1da177e4 | 3206 | /* |
8867fe58 | 3207 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3208 | */ |
1da177e4 LT |
3209 | static int |
3210 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3211 | int flags) |
1da177e4 | 3212 | { |
aa9c2669 | 3213 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3214 | struct nfs_open_context *ctx; |
1da177e4 | 3215 | struct nfs4_state *state; |
1da177e4 LT |
3216 | int status = 0; |
3217 | ||
8867fe58 MS |
3218 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3219 | if (IS_ERR(ctx)) | |
3220 | return PTR_ERR(ctx); | |
3221 | ||
aa9c2669 DQ |
3222 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3223 | ||
a8a5da99 | 3224 | sattr->ia_mode &= ~current_umask(); |
959d921f | 3225 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel); |
1da177e4 LT |
3226 | if (IS_ERR(state)) { |
3227 | status = PTR_ERR(state); | |
c0204fd2 | 3228 | goto out; |
1da177e4 | 3229 | } |
1da177e4 | 3230 | out: |
aa9c2669 | 3231 | nfs4_label_release_security(ilabel); |
8867fe58 | 3232 | put_nfs_open_context(ctx); |
1da177e4 LT |
3233 | return status; |
3234 | } | |
3235 | ||
3236 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3237 | { | |
16e42959 | 3238 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3239 | struct nfs_removeargs args = { |
1da177e4 | 3240 | .fh = NFS_FH(dir), |
26fe5750 | 3241 | .name = *name, |
16e42959 | 3242 | }; |
4fdc17b2 | 3243 | struct nfs_removeres res = { |
16e42959 | 3244 | .server = server, |
1da177e4 | 3245 | }; |
1da177e4 | 3246 | struct rpc_message msg = { |
4fdc17b2 TM |
3247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3248 | .rpc_argp = &args, | |
3249 | .rpc_resp = &res, | |
1da177e4 | 3250 | }; |
778d2817 | 3251 | int status; |
1da177e4 | 3252 | |
7c513058 | 3253 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3254 | if (status == 0) |
16e42959 | 3255 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3256 | return status; |
3257 | } | |
3258 | ||
3259 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3260 | { | |
3261 | struct nfs4_exception exception = { }; | |
3262 | int err; | |
3263 | do { | |
3264 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3265 | _nfs4_proc_remove(dir, name), | |
3266 | &exception); | |
3267 | } while (exception.retry); | |
3268 | return err; | |
3269 | } | |
3270 | ||
e4eff1a6 | 3271 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3272 | { |
e4eff1a6 TM |
3273 | struct nfs_server *server = NFS_SERVER(dir); |
3274 | struct nfs_removeargs *args = msg->rpc_argp; | |
3275 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3276 | |
e4eff1a6 | 3277 | res->server = server; |
1da177e4 | 3278 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3279 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3280 | |
3281 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3282 | } |
3283 | ||
34e137cc BS |
3284 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3285 | { | |
d9afbd1b TM |
3286 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3287 | &data->args.seq_args, | |
3288 | &data->res.seq_res, | |
3289 | task); | |
1da177e4 LT |
3290 | } |
3291 | ||
e4eff1a6 | 3292 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3293 | { |
e4eff1a6 TM |
3294 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3295 | ||
14516c3a TM |
3296 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3297 | return 0; | |
9e33bed5 | 3298 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3299 | return 0; |
3300 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3301 | return 1; |
1da177e4 LT |
3302 | } |
3303 | ||
d3d4152a JL |
3304 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3305 | { | |
3306 | struct nfs_server *server = NFS_SERVER(dir); | |
3307 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3308 | struct nfs_renameres *res = msg->rpc_resp; | |
3309 | ||
3310 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3311 | res->server = server; |
9d12b216 | 3312 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3313 | } |
3314 | ||
c6bfa1a1 BS |
3315 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3316 | { | |
d9afbd1b TM |
3317 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3318 | &data->args.seq_args, | |
3319 | &data->res.seq_res, | |
3320 | task); | |
d3d4152a JL |
3321 | } |
3322 | ||
3323 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3324 | struct inode *new_dir) | |
3325 | { | |
3326 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3327 | ||
3328 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3329 | return 0; | |
3330 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3331 | return 0; | |
3332 | ||
3333 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3334 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3335 | return 1; |
3336 | } | |
3337 | ||
1da177e4 LT |
3338 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3339 | struct inode *new_dir, struct qstr *new_name) | |
3340 | { | |
6caf2c82 | 3341 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3342 | struct nfs_renameargs arg = { |
1da177e4 LT |
3343 | .old_dir = NFS_FH(old_dir), |
3344 | .new_dir = NFS_FH(new_dir), | |
3345 | .old_name = old_name, | |
3346 | .new_name = new_name, | |
6caf2c82 | 3347 | }; |
e8582a8b | 3348 | struct nfs_renameres res = { |
6caf2c82 | 3349 | .server = server, |
1da177e4 | 3350 | }; |
1da177e4 LT |
3351 | struct rpc_message msg = { |
3352 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3353 | .rpc_argp = &arg, | |
3354 | .rpc_resp = &res, | |
3355 | }; | |
011fff72 | 3356 | int status = -ENOMEM; |
14c43f76 | 3357 | |
7c513058 | 3358 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3359 | if (!status) { |
3360 | update_changeattr(old_dir, &res.old_cinfo); | |
3361 | update_changeattr(new_dir, &res.new_cinfo); | |
3362 | } | |
3363 | return status; | |
3364 | } | |
3365 | ||
3366 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3367 | struct inode *new_dir, struct qstr *new_name) | |
3368 | { | |
3369 | struct nfs4_exception exception = { }; | |
3370 | int err; | |
3371 | do { | |
3372 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3373 | _nfs4_proc_rename(old_dir, old_name, | |
3374 | new_dir, new_name), | |
3375 | &exception); | |
3376 | } while (exception.retry); | |
3377 | return err; | |
3378 | } | |
3379 | ||
3380 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3381 | { | |
91ba2eee | 3382 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3383 | struct nfs4_link_arg arg = { |
3384 | .fh = NFS_FH(inode), | |
3385 | .dir_fh = NFS_FH(dir), | |
3386 | .name = name, | |
91ba2eee TM |
3387 | .bitmask = server->attr_bitmask, |
3388 | }; | |
91ba2eee TM |
3389 | struct nfs4_link_res res = { |
3390 | .server = server, | |
1775fd3e | 3391 | .label = NULL, |
1da177e4 | 3392 | }; |
1da177e4 LT |
3393 | struct rpc_message msg = { |
3394 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3395 | .rpc_argp = &arg, | |
91ba2eee | 3396 | .rpc_resp = &res, |
1da177e4 | 3397 | }; |
136f2627 TM |
3398 | int status = -ENOMEM; |
3399 | ||
3400 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3401 | if (res.fattr == NULL) |
136f2627 | 3402 | goto out; |
1da177e4 | 3403 | |
14c43f76 DQ |
3404 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3405 | if (IS_ERR(res.label)) { | |
3406 | status = PTR_ERR(res.label); | |
3407 | goto out; | |
3408 | } | |
aa9c2669 | 3409 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3410 | |
7c513058 | 3411 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3412 | if (!status) { |
3413 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3414 | status = nfs_post_op_update_inode(inode, res.fattr); |
3415 | if (!status) | |
3416 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3417 | } |
14c43f76 DQ |
3418 | |
3419 | ||
3420 | nfs4_label_free(res.label); | |
3421 | ||
136f2627 | 3422 | out: |
136f2627 | 3423 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3424 | return status; |
3425 | } | |
3426 | ||
3427 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3428 | { | |
3429 | struct nfs4_exception exception = { }; | |
3430 | int err; | |
3431 | do { | |
3432 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3433 | _nfs4_proc_link(inode, dir, name), | |
3434 | &exception); | |
3435 | } while (exception.retry); | |
3436 | return err; | |
3437 | } | |
3438 | ||
57dc9a57 TM |
3439 | struct nfs4_createdata { |
3440 | struct rpc_message msg; | |
3441 | struct nfs4_create_arg arg; | |
3442 | struct nfs4_create_res res; | |
3443 | struct nfs_fh fh; | |
3444 | struct nfs_fattr fattr; | |
1775fd3e | 3445 | struct nfs4_label *label; |
57dc9a57 TM |
3446 | }; |
3447 | ||
3448 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3449 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3450 | { | |
3451 | struct nfs4_createdata *data; | |
3452 | ||
3453 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3454 | if (data != NULL) { | |
3455 | struct nfs_server *server = NFS_SERVER(dir); | |
3456 | ||
14c43f76 DQ |
3457 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3458 | if (IS_ERR(data->label)) | |
3459 | goto out_free; | |
3460 | ||
57dc9a57 TM |
3461 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3462 | data->msg.rpc_argp = &data->arg; | |
3463 | data->msg.rpc_resp = &data->res; | |
3464 | data->arg.dir_fh = NFS_FH(dir); | |
3465 | data->arg.server = server; | |
3466 | data->arg.name = name; | |
3467 | data->arg.attrs = sattr; | |
3468 | data->arg.ftype = ftype; | |
aa9c2669 | 3469 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3470 | data->res.server = server; |
3471 | data->res.fh = &data->fh; | |
3472 | data->res.fattr = &data->fattr; | |
1775fd3e | 3473 | data->res.label = data->label; |
57dc9a57 | 3474 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3475 | } |
3476 | return data; | |
14c43f76 DQ |
3477 | out_free: |
3478 | kfree(data); | |
3479 | return NULL; | |
57dc9a57 TM |
3480 | } |
3481 | ||
3482 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3483 | { | |
7c513058 | 3484 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3485 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3486 | if (status == 0) { |
3487 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3488 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3489 | } |
3490 | return status; | |
3491 | } | |
3492 | ||
3493 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3494 | { | |
14c43f76 | 3495 | nfs4_label_free(data->label); |
57dc9a57 TM |
3496 | kfree(data); |
3497 | } | |
3498 | ||
4f390c15 | 3499 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3500 | struct page *page, unsigned int len, struct iattr *sattr, |
3501 | struct nfs4_label *label) | |
1da177e4 | 3502 | { |
57dc9a57 TM |
3503 | struct nfs4_createdata *data; |
3504 | int status = -ENAMETOOLONG; | |
1da177e4 | 3505 | |
94a6d753 | 3506 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3507 | goto out; |
4f390c15 | 3508 | |
57dc9a57 TM |
3509 | status = -ENOMEM; |
3510 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3511 | if (data == NULL) | |
3512 | goto out; | |
3513 | ||
3514 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3515 | data->arg.u.symlink.pages = &page; | |
3516 | data->arg.u.symlink.len = len; | |
1775fd3e | 3517 | data->arg.label = label; |
1da177e4 | 3518 | |
57dc9a57 TM |
3519 | status = nfs4_do_create(dir, dentry, data); |
3520 | ||
3521 | nfs4_free_createdata(data); | |
3522 | out: | |
1da177e4 LT |
3523 | return status; |
3524 | } | |
3525 | ||
4f390c15 | 3526 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3527 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3528 | { |
3529 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3530 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3531 | int err; |
aa9c2669 DQ |
3532 | |
3533 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3534 | ||
1da177e4 LT |
3535 | do { |
3536 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 | 3537 | _nfs4_proc_symlink(dir, dentry, page, |
1775fd3e | 3538 | len, sattr, label), |
1da177e4 LT |
3539 | &exception); |
3540 | } while (exception.retry); | |
aa9c2669 DQ |
3541 | |
3542 | nfs4_label_release_security(label); | |
1da177e4 LT |
3543 | return err; |
3544 | } | |
3545 | ||
3546 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3547 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3548 | { |
57dc9a57 TM |
3549 | struct nfs4_createdata *data; |
3550 | int status = -ENOMEM; | |
1da177e4 | 3551 | |
57dc9a57 TM |
3552 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3553 | if (data == NULL) | |
3554 | goto out; | |
3555 | ||
1775fd3e | 3556 | data->arg.label = label; |
57dc9a57 TM |
3557 | status = nfs4_do_create(dir, dentry, data); |
3558 | ||
3559 | nfs4_free_createdata(data); | |
3560 | out: | |
1da177e4 LT |
3561 | return status; |
3562 | } | |
3563 | ||
3564 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3565 | struct iattr *sattr) | |
3566 | { | |
3567 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3568 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3569 | int err; |
a8a5da99 | 3570 | |
aa9c2669 DQ |
3571 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3572 | ||
a8a5da99 | 3573 | sattr->ia_mode &= ~current_umask(); |
1da177e4 LT |
3574 | do { |
3575 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1775fd3e | 3576 | _nfs4_proc_mkdir(dir, dentry, sattr, label), |
1da177e4 LT |
3577 | &exception); |
3578 | } while (exception.retry); | |
aa9c2669 DQ |
3579 | nfs4_label_release_security(label); |
3580 | ||
1da177e4 LT |
3581 | return err; |
3582 | } | |
3583 | ||
3584 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3585 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3586 | { |
3587 | struct inode *dir = dentry->d_inode; | |
3588 | struct nfs4_readdir_arg args = { | |
3589 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3590 | .pages = pages, |
1da177e4 LT |
3591 | .pgbase = 0, |
3592 | .count = count, | |
96d25e53 | 3593 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3594 | .plus = plus, |
1da177e4 LT |
3595 | }; |
3596 | struct nfs4_readdir_res res; | |
3597 | struct rpc_message msg = { | |
3598 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3599 | .rpc_argp = &args, | |
3600 | .rpc_resp = &res, | |
3601 | .rpc_cred = cred, | |
3602 | }; | |
3603 | int status; | |
3604 | ||
3110ff80 | 3605 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3606 | dentry->d_parent->d_name.name, |
3607 | dentry->d_name.name, | |
3608 | (unsigned long long)cookie); | |
c3f52af3 | 3609 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3610 | res.pgbase = args.pgbase; |
7c513058 | 3611 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3612 | if (status >= 0) { |
c3f52af3 | 3613 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3614 | status += args.pgbase; |
3615 | } | |
c4812998 TM |
3616 | |
3617 | nfs_invalidate_atime(dir); | |
3618 | ||
3110ff80 | 3619 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3620 | return status; |
3621 | } | |
3622 | ||
3623 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3624 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3625 | { |
3626 | struct nfs4_exception exception = { }; | |
3627 | int err; | |
3628 | do { | |
3629 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3630 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3631 | pages, count, plus), |
1da177e4 LT |
3632 | &exception); |
3633 | } while (exception.retry); | |
3634 | return err; | |
3635 | } | |
3636 | ||
3637 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3638 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3639 | { |
57dc9a57 TM |
3640 | struct nfs4_createdata *data; |
3641 | int mode = sattr->ia_mode; | |
3642 | int status = -ENOMEM; | |
1da177e4 | 3643 | |
57dc9a57 TM |
3644 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3645 | if (data == NULL) | |
3646 | goto out; | |
3647 | ||
1da177e4 | 3648 | if (S_ISFIFO(mode)) |
57dc9a57 | 3649 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3650 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3651 | data->arg.ftype = NF4BLK; |
3652 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3653 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3654 | } |
3655 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3656 | data->arg.ftype = NF4CHR; |
3657 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3658 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3659 | } else if (!S_ISSOCK(mode)) { |
3660 | status = -EINVAL; | |
3661 | goto out_free; | |
1da177e4 | 3662 | } |
1775fd3e | 3663 | |
aa9c2669 | 3664 | data->arg.label = label; |
57dc9a57 | 3665 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3666 | out_free: |
57dc9a57 TM |
3667 | nfs4_free_createdata(data); |
3668 | out: | |
1da177e4 LT |
3669 | return status; |
3670 | } | |
3671 | ||
3672 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3673 | struct iattr *sattr, dev_t rdev) | |
3674 | { | |
3675 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3676 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3677 | int err; |
a8a5da99 | 3678 | |
aa9c2669 DQ |
3679 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3680 | ||
a8a5da99 | 3681 | sattr->ia_mode &= ~current_umask(); |
1da177e4 LT |
3682 | do { |
3683 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
aa9c2669 | 3684 | _nfs4_proc_mknod(dir, dentry, sattr, label, rdev), |
1da177e4 LT |
3685 | &exception); |
3686 | } while (exception.retry); | |
aa9c2669 DQ |
3687 | |
3688 | nfs4_label_release_security(label); | |
3689 | ||
1da177e4 LT |
3690 | return err; |
3691 | } | |
3692 | ||
3693 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3694 | struct nfs_fsstat *fsstat) | |
3695 | { | |
3696 | struct nfs4_statfs_arg args = { | |
3697 | .fh = fhandle, | |
3698 | .bitmask = server->attr_bitmask, | |
3699 | }; | |
24ad148a BH |
3700 | struct nfs4_statfs_res res = { |
3701 | .fsstat = fsstat, | |
3702 | }; | |
1da177e4 LT |
3703 | struct rpc_message msg = { |
3704 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3705 | .rpc_argp = &args, | |
24ad148a | 3706 | .rpc_resp = &res, |
1da177e4 LT |
3707 | }; |
3708 | ||
0e574af1 | 3709 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3710 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3711 | } |
3712 | ||
3713 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3714 | { | |
3715 | struct nfs4_exception exception = { }; | |
3716 | int err; | |
3717 | do { | |
3718 | err = nfs4_handle_exception(server, | |
3719 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3720 | &exception); | |
3721 | } while (exception.retry); | |
3722 | return err; | |
3723 | } | |
3724 | ||
3725 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3726 | struct nfs_fsinfo *fsinfo) | |
3727 | { | |
3728 | struct nfs4_fsinfo_arg args = { | |
3729 | .fh = fhandle, | |
3730 | .bitmask = server->attr_bitmask, | |
3731 | }; | |
3dda5e43 BH |
3732 | struct nfs4_fsinfo_res res = { |
3733 | .fsinfo = fsinfo, | |
3734 | }; | |
1da177e4 LT |
3735 | struct rpc_message msg = { |
3736 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3737 | .rpc_argp = &args, | |
3dda5e43 | 3738 | .rpc_resp = &res, |
1da177e4 LT |
3739 | }; |
3740 | ||
7c513058 | 3741 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3742 | } |
3743 | ||
3744 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3745 | { | |
3746 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3747 | unsigned long now = jiffies; |
1da177e4 LT |
3748 | int err; |
3749 | ||
3750 | do { | |
83ca7f5a CL |
3751 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
3752 | if (err == 0) { | |
3753 | struct nfs_client *clp = server->nfs_client; | |
3754 | ||
3755 | spin_lock(&clp->cl_lock); | |
3756 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3757 | clp->cl_last_renewal = now; | |
3758 | spin_unlock(&clp->cl_lock); | |
3759 | break; | |
3760 | } | |
3761 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3762 | } while (exception.retry); |
3763 | return err; | |
3764 | } | |
3765 | ||
3766 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3767 | { | |
e38eb650 BS |
3768 | int error; |
3769 | ||
0e574af1 | 3770 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3771 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3772 | if (error == 0) { |
3773 | /* block layout checks this! */ | |
3774 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3775 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3776 | } |
e38eb650 BS |
3777 | |
3778 | return error; | |
1da177e4 LT |
3779 | } |
3780 | ||
3781 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3782 | struct nfs_pathconf *pathconf) | |
3783 | { | |
3784 | struct nfs4_pathconf_arg args = { | |
3785 | .fh = fhandle, | |
3786 | .bitmask = server->attr_bitmask, | |
3787 | }; | |
d45b2989 BH |
3788 | struct nfs4_pathconf_res res = { |
3789 | .pathconf = pathconf, | |
3790 | }; | |
1da177e4 LT |
3791 | struct rpc_message msg = { |
3792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3793 | .rpc_argp = &args, | |
d45b2989 | 3794 | .rpc_resp = &res, |
1da177e4 LT |
3795 | }; |
3796 | ||
3797 | /* None of the pathconf attributes are mandatory to implement */ | |
3798 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3799 | memset(pathconf, 0, sizeof(*pathconf)); | |
3800 | return 0; | |
3801 | } | |
3802 | ||
0e574af1 | 3803 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3804 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3805 | } |
3806 | ||
3807 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3808 | struct nfs_pathconf *pathconf) | |
3809 | { | |
3810 | struct nfs4_exception exception = { }; | |
3811 | int err; | |
3812 | ||
3813 | do { | |
3814 | err = nfs4_handle_exception(server, | |
3815 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3816 | &exception); | |
3817 | } while (exception.retry); | |
3818 | return err; | |
3819 | } | |
3820 | ||
5521abfd | 3821 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3822 | const struct nfs_open_context *ctx, |
3823 | const struct nfs_lock_context *l_ctx, | |
3824 | fmode_t fmode) | |
3825 | { | |
3826 | const struct nfs_lockowner *lockowner = NULL; | |
3827 | ||
3828 | if (l_ctx != NULL) | |
3829 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3830 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3831 | } |
3832 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3833 | ||
5521abfd TM |
3834 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3835 | const struct nfs_open_context *ctx, | |
3836 | const struct nfs_lock_context *l_ctx, | |
3837 | fmode_t fmode) | |
3838 | { | |
3839 | nfs4_stateid current_stateid; | |
3840 | ||
3841 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3842 | return false; | |
3843 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3844 | } | |
3845 | ||
3846 | static bool nfs4_error_stateid_expired(int err) | |
3847 | { | |
3848 | switch (err) { | |
3849 | case -NFS4ERR_DELEG_REVOKED: | |
3850 | case -NFS4ERR_ADMIN_REVOKED: | |
3851 | case -NFS4ERR_BAD_STATEID: | |
3852 | case -NFS4ERR_STALE_STATEID: | |
3853 | case -NFS4ERR_OLD_STATEID: | |
3854 | case -NFS4ERR_OPENMODE: | |
3855 | case -NFS4ERR_EXPIRED: | |
3856 | return true; | |
3857 | } | |
3858 | return false; | |
3859 | } | |
3860 | ||
d20581aa BH |
3861 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3862 | { | |
cd841605 | 3863 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3864 | } |
3865 | ||
cbdabc7f | 3866 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3867 | { |
cd841605 | 3868 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3869 | |
9e33bed5 | 3870 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3871 | rpc_restart_call_prepare(task); |
ec06c096 | 3872 | return -EAGAIN; |
1da177e4 | 3873 | } |
8850df99 | 3874 | |
d20581aa | 3875 | __nfs4_read_done_cb(data); |
1da177e4 | 3876 | if (task->tk_status > 0) |
ec06c096 TM |
3877 | renew_lease(server, data->timestamp); |
3878 | return 0; | |
1da177e4 LT |
3879 | } |
3880 | ||
5521abfd TM |
3881 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3882 | struct nfs_readargs *args) | |
3883 | { | |
3884 | ||
3885 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3886 | nfs4_stateid_is_current(&args->stateid, | |
3887 | args->context, | |
3888 | args->lock_context, | |
3889 | FMODE_READ)) | |
3890 | return false; | |
3891 | rpc_restart_call_prepare(task); | |
3892 | return true; | |
3893 | } | |
3894 | ||
cbdabc7f AA |
3895 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3896 | { | |
3897 | ||
3898 | dprintk("--> %s\n", __func__); | |
3899 | ||
3900 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3901 | return -EAGAIN; | |
5521abfd TM |
3902 | if (nfs4_read_stateid_changed(task, &data->args)) |
3903 | return -EAGAIN; | |
d20581aa BH |
3904 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3905 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3906 | } |
3907 | ||
bdc7f021 | 3908 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3909 | { |
1da177e4 | 3910 | data->timestamp = jiffies; |
cbdabc7f | 3911 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3912 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3913 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3914 | } |
3915 | ||
ea7c3303 BS |
3916 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3917 | { | |
9b206149 | 3918 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3919 | &data->args.seq_args, |
3920 | &data->res.seq_res, | |
9b206149 TM |
3921 | task)) |
3922 | return; | |
3923 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3924 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3925 | } |
3926 | ||
b029bc9b | 3927 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3928 | { |
cd841605 | 3929 | struct inode *inode = data->header->inode; |
1da177e4 | 3930 | |
9e33bed5 | 3931 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3932 | rpc_restart_call_prepare(task); |
788e7a89 | 3933 | return -EAGAIN; |
1da177e4 | 3934 | } |
4f9838c7 | 3935 | if (task->tk_status >= 0) { |
1da177e4 | 3936 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3937 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3938 | } |
788e7a89 | 3939 | return 0; |
1da177e4 LT |
3940 | } |
3941 | ||
5521abfd TM |
3942 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3943 | struct nfs_writeargs *args) | |
3944 | { | |
3945 | ||
3946 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3947 | nfs4_stateid_is_current(&args->stateid, | |
3948 | args->context, | |
3949 | args->lock_context, | |
3950 | FMODE_WRITE)) | |
3951 | return false; | |
3952 | rpc_restart_call_prepare(task); | |
3953 | return true; | |
3954 | } | |
3955 | ||
b029bc9b FI |
3956 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3957 | { | |
3958 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3959 | return -EAGAIN; | |
5521abfd TM |
3960 | if (nfs4_write_stateid_changed(task, &data->args)) |
3961 | return -EAGAIN; | |
d20581aa BH |
3962 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3963 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3964 | } |
3965 | ||
5a37f851 TM |
3966 | static |
3967 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3968 | { |
5a37f851 TM |
3969 | const struct nfs_pgio_header *hdr = data->header; |
3970 | ||
3971 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3972 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3973 | return false; | |
3974 | /* Otherwise, request attributes if and only if we don't hold | |
3975 | * a delegation | |
3976 | */ | |
011e2a7f | 3977 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3978 | } |
a69aef14 | 3979 | |
bdc7f021 | 3980 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3981 | { |
cd841605 | 3982 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3983 | |
5a37f851 | 3984 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3985 | data->args.bitmask = NULL; |
3986 | data->res.fattr = NULL; | |
3987 | } else | |
3988 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3989 | |
b029bc9b FI |
3990 | if (!data->write_done_cb) |
3991 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3992 | data->res.server = server; |
1da177e4 LT |
3993 | data->timestamp = jiffies; |
3994 | ||
bdc7f021 | 3995 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3996 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3997 | } |
3998 | ||
c6cb80d0 BS |
3999 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
4000 | { | |
9b206149 | 4001 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4002 | &data->args.seq_args, |
4003 | &data->res.seq_res, | |
9b206149 TM |
4004 | task)) |
4005 | return; | |
4006 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4007 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
4008 | } |
4009 | ||
0b7c0153 | 4010 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4011 | { |
d9afbd1b TM |
4012 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4013 | &data->args.seq_args, | |
4014 | &data->res.seq_res, | |
4015 | task); | |
1da177e4 LT |
4016 | } |
4017 | ||
0b7c0153 | 4018 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4019 | { |
1da177e4 | 4020 | struct inode *inode = data->inode; |
14516c3a | 4021 | |
9e33bed5 | 4022 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4023 | rpc_restart_call_prepare(task); |
788e7a89 | 4024 | return -EAGAIN; |
1da177e4 | 4025 | } |
788e7a89 | 4026 | return 0; |
1da177e4 LT |
4027 | } |
4028 | ||
0b7c0153 | 4029 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4030 | { |
4031 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4032 | return -EAGAIN; | |
0b7c0153 | 4033 | return data->commit_done_cb(task, data); |
5f452431 FI |
4034 | } |
4035 | ||
0b7c0153 | 4036 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4037 | { |
788e7a89 | 4038 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4039 | |
0b7c0153 FI |
4040 | if (data->commit_done_cb == NULL) |
4041 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4042 | data->res.server = server; |
bdc7f021 | 4043 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 4044 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4045 | } |
4046 | ||
9bc4e3ca CL |
4047 | struct nfs4_renewdata { |
4048 | struct nfs_client *client; | |
4049 | unsigned long timestamp; | |
4050 | }; | |
4051 | ||
1da177e4 LT |
4052 | /* |
4053 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4054 | * standalone procedure for queueing an asynchronous RENEW. | |
4055 | */ | |
9bc4e3ca | 4056 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4057 | { |
9bc4e3ca CL |
4058 | struct nfs4_renewdata *data = calldata; |
4059 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4060 | |
0851de06 AB |
4061 | if (atomic_read(&clp->cl_count) > 1) |
4062 | nfs4_schedule_state_renewal(clp); | |
4063 | nfs_put_client(clp); | |
9bc4e3ca | 4064 | kfree(data); |
dc96aef9 AB |
4065 | } |
4066 | ||
9bc4e3ca | 4067 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4068 | { |
9bc4e3ca CL |
4069 | struct nfs4_renewdata *data = calldata; |
4070 | struct nfs_client *clp = data->client; | |
4071 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4072 | |
c6d01c6f | 4073 | trace_nfs4_renew_async(clp, task->tk_status); |
1da177e4 | 4074 | if (task->tk_status < 0) { |
95baa25c | 4075 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4076 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4077 | return; | |
4078 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4079 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4080 | return; |
4081 | } | |
4082 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4083 | } |
452e9352 | 4084 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4085 | } |
4086 | ||
963d8fe5 TM |
4087 | static const struct rpc_call_ops nfs4_renew_ops = { |
4088 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4089 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4090 | }; |
4091 | ||
2f60ea6b | 4092 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4093 | { |
4094 | struct rpc_message msg = { | |
4095 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4096 | .rpc_argp = clp, | |
b4454fe1 | 4097 | .rpc_cred = cred, |
1da177e4 | 4098 | }; |
9bc4e3ca | 4099 | struct nfs4_renewdata *data; |
1da177e4 | 4100 | |
2f60ea6b TM |
4101 | if (renew_flags == 0) |
4102 | return 0; | |
0851de06 AB |
4103 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4104 | return -EIO; | |
b569ad34 | 4105 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4106 | if (data == NULL) |
4107 | return -ENOMEM; | |
4108 | data->client = clp; | |
4109 | data->timestamp = jiffies; | |
bc7a05ca | 4110 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4111 | &nfs4_renew_ops, data); |
1da177e4 LT |
4112 | } |
4113 | ||
8534d4ec | 4114 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4115 | { |
4116 | struct rpc_message msg = { | |
4117 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4118 | .rpc_argp = clp, | |
b4454fe1 | 4119 | .rpc_cred = cred, |
1da177e4 LT |
4120 | }; |
4121 | unsigned long now = jiffies; | |
4122 | int status; | |
4123 | ||
bc7a05ca | 4124 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4125 | if (status < 0) |
4126 | return status; | |
452e9352 | 4127 | do_renew_lease(clp, now); |
1da177e4 LT |
4128 | return 0; |
4129 | } | |
4130 | ||
aa1870af BF |
4131 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4132 | { | |
4133 | return (server->caps & NFS_CAP_ACLS) | |
4134 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
4135 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
4136 | } | |
4137 | ||
21f498c2 TM |
4138 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4139 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4140 | * the stack. |
4141 | */ | |
21f498c2 | 4142 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4143 | |
e9e3d724 NH |
4144 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4145 | struct page **pages, unsigned int *pgbase) | |
4146 | { | |
4147 | struct page *newpage, **spages; | |
4148 | int rc = 0; | |
4149 | size_t len; | |
4150 | spages = pages; | |
4151 | ||
4152 | do { | |
21f498c2 | 4153 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4154 | newpage = alloc_page(GFP_KERNEL); |
4155 | ||
4156 | if (newpage == NULL) | |
4157 | goto unwind; | |
4158 | memcpy(page_address(newpage), buf, len); | |
4159 | buf += len; | |
4160 | buflen -= len; | |
4161 | *pages++ = newpage; | |
4162 | rc++; | |
4163 | } while (buflen != 0); | |
4164 | ||
4165 | return rc; | |
4166 | ||
4167 | unwind: | |
4168 | for(; rc > 0; rc--) | |
4169 | __free_page(spages[rc-1]); | |
4170 | return -ENOMEM; | |
4171 | } | |
4172 | ||
e50a1c2e BF |
4173 | struct nfs4_cached_acl { |
4174 | int cached; | |
4175 | size_t len; | |
3e9d4154 | 4176 | char data[0]; |
e50a1c2e BF |
4177 | }; |
4178 | ||
4179 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4180 | { | |
4181 | struct nfs_inode *nfsi = NFS_I(inode); | |
4182 | ||
4183 | spin_lock(&inode->i_lock); | |
4184 | kfree(nfsi->nfs4_acl); | |
4185 | nfsi->nfs4_acl = acl; | |
4186 | spin_unlock(&inode->i_lock); | |
4187 | } | |
4188 | ||
4189 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4190 | { | |
4191 | nfs4_set_cached_acl(inode, NULL); | |
4192 | } | |
4193 | ||
4194 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4195 | { | |
4196 | struct nfs_inode *nfsi = NFS_I(inode); | |
4197 | struct nfs4_cached_acl *acl; | |
4198 | int ret = -ENOENT; | |
4199 | ||
4200 | spin_lock(&inode->i_lock); | |
4201 | acl = nfsi->nfs4_acl; | |
4202 | if (acl == NULL) | |
4203 | goto out; | |
4204 | if (buf == NULL) /* user is just asking for length */ | |
4205 | goto out_len; | |
4206 | if (acl->cached == 0) | |
4207 | goto out; | |
4208 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4209 | if (acl->len > buflen) | |
4210 | goto out; | |
4211 | memcpy(buf, acl->data, acl->len); | |
4212 | out_len: | |
4213 | ret = acl->len; | |
4214 | out: | |
4215 | spin_unlock(&inode->i_lock); | |
4216 | return ret; | |
4217 | } | |
4218 | ||
5794d21e | 4219 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4220 | { |
4221 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4222 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4223 | |
1f1ea6c2 | 4224 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4225 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4226 | if (acl == NULL) |
4227 | goto out; | |
4228 | acl->cached = 1; | |
5794d21e | 4229 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4230 | } else { |
4231 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4232 | if (acl == NULL) | |
4233 | goto out; | |
4234 | acl->cached = 0; | |
4235 | } | |
4236 | acl->len = acl_len; | |
4237 | out: | |
4238 | nfs4_set_cached_acl(inode, acl); | |
4239 | } | |
4240 | ||
bf118a34 AA |
4241 | /* |
4242 | * The getxattr API returns the required buffer length when called with a | |
4243 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4244 | * the required buf. On a NULL buf, we send a page of data to the server | |
4245 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4246 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4247 | * the cache. If not so, we throw away the page, and cache the required | |
4248 | * length. The next getxattr call will then produce another round trip to | |
4249 | * the server, this time with the input buf of the required size. | |
4250 | */ | |
16b4289c | 4251 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4252 | { |
bf118a34 | 4253 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4254 | struct nfs_getaclargs args = { |
4255 | .fh = NFS_FH(inode), | |
4256 | .acl_pages = pages, | |
4257 | .acl_len = buflen, | |
4258 | }; | |
663c79b3 BH |
4259 | struct nfs_getaclres res = { |
4260 | .acl_len = buflen, | |
4261 | }; | |
aa1870af BF |
4262 | struct rpc_message msg = { |
4263 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4264 | .rpc_argp = &args, | |
663c79b3 | 4265 | .rpc_resp = &res, |
aa1870af | 4266 | }; |
21f498c2 TM |
4267 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4268 | int ret = -ENOMEM, i; | |
aa1870af | 4269 | |
bf118a34 AA |
4270 | /* As long as we're doing a round trip to the server anyway, |
4271 | * let's be prepared for a page of acl data. */ | |
4272 | if (npages == 0) | |
4273 | npages = 1; | |
21f498c2 TM |
4274 | if (npages > ARRAY_SIZE(pages)) |
4275 | return -ERANGE; | |
5a006899 | 4276 | |
bf118a34 AA |
4277 | for (i = 0; i < npages; i++) { |
4278 | pages[i] = alloc_page(GFP_KERNEL); | |
4279 | if (!pages[i]) | |
4280 | goto out_free; | |
e50a1c2e | 4281 | } |
5a006899 SP |
4282 | |
4283 | /* for decoding across pages */ | |
4284 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4285 | if (!res.acl_scratch) | |
4286 | goto out_free; | |
4287 | ||
bf118a34 AA |
4288 | args.acl_len = npages * PAGE_SIZE; |
4289 | args.acl_pgbase = 0; | |
5a006899 | 4290 | |
de040bec | 4291 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4292 | __func__, buf, buflen, npages, args.acl_len); |
4293 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4294 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4295 | if (ret) |
4296 | goto out_free; | |
bf118a34 | 4297 | |
1f1ea6c2 TM |
4298 | /* Handle the case where the passed-in buffer is too short */ |
4299 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4300 | /* Did the user only issue a request for the acl length? */ | |
4301 | if (buf == NULL) | |
4302 | goto out_ok; | |
e50a1c2e | 4303 | ret = -ERANGE; |
1f1ea6c2 | 4304 | goto out_free; |
e50a1c2e | 4305 | } |
1f1ea6c2 | 4306 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4307 | if (buf) { |
4308 | if (res.acl_len > buflen) { | |
4309 | ret = -ERANGE; | |
4310 | goto out_free; | |
4311 | } | |
1f1ea6c2 | 4312 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4313 | } |
1f1ea6c2 TM |
4314 | out_ok: |
4315 | ret = res.acl_len; | |
e50a1c2e | 4316 | out_free: |
bf118a34 AA |
4317 | for (i = 0; i < npages; i++) |
4318 | if (pages[i]) | |
4319 | __free_page(pages[i]); | |
331818f1 TM |
4320 | if (res.acl_scratch) |
4321 | __free_page(res.acl_scratch); | |
aa1870af BF |
4322 | return ret; |
4323 | } | |
4324 | ||
16b4289c TM |
4325 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4326 | { | |
4327 | struct nfs4_exception exception = { }; | |
4328 | ssize_t ret; | |
4329 | do { | |
4330 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4331 | if (ret >= 0) | |
4332 | break; | |
4333 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4334 | } while (exception.retry); | |
4335 | return ret; | |
4336 | } | |
4337 | ||
e50a1c2e BF |
4338 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4339 | { | |
4340 | struct nfs_server *server = NFS_SERVER(inode); | |
4341 | int ret; | |
4342 | ||
4343 | if (!nfs4_server_supports_acls(server)) | |
4344 | return -EOPNOTSUPP; | |
4345 | ret = nfs_revalidate_inode(server, inode); | |
4346 | if (ret < 0) | |
4347 | return ret; | |
08a22b39 AK |
4348 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4349 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4350 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4351 | if (ret != -ENOENT) | |
bf118a34 AA |
4352 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4353 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4354 | return ret; |
4355 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4356 | } | |
4357 | ||
16b4289c | 4358 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4359 | { |
4360 | struct nfs_server *server = NFS_SERVER(inode); | |
4361 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4362 | struct nfs_setaclargs arg = { | |
4363 | .fh = NFS_FH(inode), | |
4364 | .acl_pages = pages, | |
4365 | .acl_len = buflen, | |
4366 | }; | |
73c403a9 | 4367 | struct nfs_setaclres res; |
4b580ee3 BF |
4368 | struct rpc_message msg = { |
4369 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4370 | .rpc_argp = &arg, | |
73c403a9 | 4371 | .rpc_resp = &res, |
4b580ee3 | 4372 | }; |
21f498c2 | 4373 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4374 | int ret, i; |
4b580ee3 BF |
4375 | |
4376 | if (!nfs4_server_supports_acls(server)) | |
4377 | return -EOPNOTSUPP; | |
21f498c2 TM |
4378 | if (npages > ARRAY_SIZE(pages)) |
4379 | return -ERANGE; | |
e9e3d724 NH |
4380 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4381 | if (i < 0) | |
4382 | return i; | |
57ec14c5 | 4383 | nfs4_inode_return_delegation(inode); |
7c513058 | 4384 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4385 | |
4386 | /* | |
4387 | * Free each page after tx, so the only ref left is | |
4388 | * held by the network stack | |
4389 | */ | |
4390 | for (; i > 0; i--) | |
4391 | put_page(pages[i-1]); | |
4392 | ||
08a22b39 AK |
4393 | /* |
4394 | * Acl update can result in inode attribute update. | |
4395 | * so mark the attribute cache invalid. | |
4396 | */ | |
4397 | spin_lock(&inode->i_lock); | |
4398 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4399 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4400 | nfs_access_zap_cache(inode); |
4401 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4402 | return ret; |
4403 | } | |
4404 | ||
16b4289c TM |
4405 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4406 | { | |
4407 | struct nfs4_exception exception = { }; | |
4408 | int err; | |
4409 | do { | |
4410 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4411 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4412 | &exception); | |
4413 | } while (exception.retry); | |
4414 | return err; | |
4415 | } | |
4416 | ||
aa9c2669 DQ |
4417 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4418 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4419 | size_t buflen) | |
4420 | { | |
4421 | struct nfs_server *server = NFS_SERVER(inode); | |
4422 | struct nfs_fattr fattr; | |
4423 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4424 | ||
4425 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4426 | struct nfs4_getattr_arg args = { | |
4427 | .fh = NFS_FH(inode), | |
4428 | .bitmask = bitmask, | |
4429 | }; | |
4430 | struct nfs4_getattr_res res = { | |
4431 | .fattr = &fattr, | |
4432 | .label = &label, | |
4433 | .server = server, | |
4434 | }; | |
4435 | struct rpc_message msg = { | |
4436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4437 | .rpc_argp = &args, | |
4438 | .rpc_resp = &res, | |
4439 | }; | |
4440 | int ret; | |
4441 | ||
4442 | nfs_fattr_init(&fattr); | |
4443 | ||
4444 | ret = rpc_call_sync(server->client, &msg, 0); | |
4445 | if (ret) | |
4446 | return ret; | |
4447 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4448 | return -ENOENT; | |
4449 | if (buflen < label.len) | |
4450 | return -ERANGE; | |
4451 | return 0; | |
4452 | } | |
4453 | ||
4454 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4455 | size_t buflen) | |
4456 | { | |
4457 | struct nfs4_exception exception = { }; | |
4458 | int err; | |
4459 | ||
4460 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4461 | return -EOPNOTSUPP; | |
4462 | ||
4463 | do { | |
4464 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4465 | _nfs4_get_security_label(inode, buf, buflen), | |
4466 | &exception); | |
4467 | } while (exception.retry); | |
4468 | return err; | |
4469 | } | |
4470 | ||
4471 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4472 | struct nfs4_label *ilabel, | |
4473 | struct nfs_fattr *fattr, | |
4474 | struct nfs4_label *olabel) | |
4475 | { | |
4476 | ||
4477 | struct iattr sattr = {0}; | |
4478 | struct nfs_server *server = NFS_SERVER(inode); | |
4479 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4480 | struct nfs_setattrargs args = { | |
4481 | .fh = NFS_FH(inode), | |
4482 | .iap = &sattr, | |
4483 | .server = server, | |
4484 | .bitmask = bitmask, | |
4485 | .label = ilabel, | |
4486 | }; | |
4487 | struct nfs_setattrres res = { | |
4488 | .fattr = fattr, | |
4489 | .label = olabel, | |
4490 | .server = server, | |
4491 | }; | |
4492 | struct rpc_message msg = { | |
4493 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
4494 | .rpc_argp = &args, | |
4495 | .rpc_resp = &res, | |
4496 | }; | |
4497 | int status; | |
4498 | ||
4499 | nfs4_stateid_copy(&args.stateid, &zero_stateid); | |
4500 | ||
4501 | status = rpc_call_sync(server->client, &msg, 0); | |
4502 | if (status) | |
4503 | dprintk("%s failed: %d\n", __func__, status); | |
4504 | ||
4505 | return status; | |
4506 | } | |
4507 | ||
4508 | static int nfs4_do_set_security_label(struct inode *inode, | |
4509 | struct nfs4_label *ilabel, | |
4510 | struct nfs_fattr *fattr, | |
4511 | struct nfs4_label *olabel) | |
4512 | { | |
4513 | struct nfs4_exception exception = { }; | |
4514 | int err; | |
4515 | ||
4516 | do { | |
4517 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4518 | _nfs4_do_set_security_label(inode, ilabel, | |
4519 | fattr, olabel), | |
4520 | &exception); | |
4521 | } while (exception.retry); | |
4522 | return err; | |
4523 | } | |
4524 | ||
4525 | static int | |
4526 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4527 | { | |
4528 | struct nfs4_label ilabel, *olabel = NULL; | |
4529 | struct nfs_fattr fattr; | |
4530 | struct rpc_cred *cred; | |
4531 | struct inode *inode = dentry->d_inode; | |
4532 | int status; | |
4533 | ||
4534 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4535 | return -EOPNOTSUPP; | |
4536 | ||
4537 | nfs_fattr_init(&fattr); | |
4538 | ||
4539 | ilabel.pi = 0; | |
4540 | ilabel.lfs = 0; | |
4541 | ilabel.label = (char *)buf; | |
4542 | ilabel.len = buflen; | |
4543 | ||
4544 | cred = rpc_lookup_cred(); | |
4545 | if (IS_ERR(cred)) | |
4546 | return PTR_ERR(cred); | |
4547 | ||
4548 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4549 | if (IS_ERR(olabel)) { | |
4550 | status = -PTR_ERR(olabel); | |
4551 | goto out; | |
4552 | } | |
4553 | ||
4554 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4555 | if (status == 0) | |
4556 | nfs_setsecurity(inode, &fattr, olabel); | |
4557 | ||
4558 | nfs4_label_free(olabel); | |
4559 | out: | |
4560 | put_rpccred(cred); | |
4561 | return status; | |
4562 | } | |
4563 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4564 | ||
4565 | ||
1da177e4 | 4566 | static int |
aa5190d0 | 4567 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4568 | { |
aa5190d0 TM |
4569 | struct nfs_client *clp = server->nfs_client; |
4570 | ||
4571 | if (task->tk_status >= 0) | |
1da177e4 LT |
4572 | return 0; |
4573 | switch(task->tk_status) { | |
a1d0b5ee | 4574 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4575 | case -NFS4ERR_ADMIN_REVOKED: |
4576 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4577 | if (state == NULL) |
4578 | break; | |
4579 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4580 | case -NFS4ERR_OPENMODE: |
4581 | if (state == NULL) | |
4582 | break; | |
5d422301 TM |
4583 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4584 | goto stateid_invalid; | |
0400a6b0 | 4585 | goto wait_on_recovery; |
0ced63d1 | 4586 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4587 | if (state != NULL) { |
4588 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4589 | goto stateid_invalid; | |
4590 | } | |
1da177e4 | 4591 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4592 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4593 | nfs4_schedule_lease_recovery(clp); |
4594 | goto wait_on_recovery; | |
4745e315 AA |
4595 | #if defined(CONFIG_NFS_V4_1) |
4596 | case -NFS4ERR_BADSESSION: | |
4597 | case -NFS4ERR_BADSLOT: | |
4598 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4599 | case -NFS4ERR_DEADSESSION: | |
4600 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4601 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4602 | case -NFS4ERR_SEQ_MISORDERED: | |
4603 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4604 | task->tk_status); | |
9f594791 | 4605 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4606 | task->tk_status = 0; |
4607 | return -EAGAIN; | |
4608 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4609 | case -NFS4ERR_DELAY: |
aa5190d0 | 4610 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4611 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4612 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4613 | task->tk_status = 0; | |
4614 | return -EAGAIN; | |
a8a4ae3a | 4615 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4616 | case -NFS4ERR_OLD_STATEID: |
4617 | task->tk_status = 0; | |
4618 | return -EAGAIN; | |
4619 | } | |
4620 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4621 | return 0; | |
5d422301 TM |
4622 | stateid_invalid: |
4623 | task->tk_status = -EIO; | |
4624 | return 0; | |
0400a6b0 | 4625 | wait_on_recovery: |
a2c0b9e2 | 4626 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4627 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4628 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4629 | task->tk_status = 0; | |
4630 | return -EAGAIN; | |
1da177e4 LT |
4631 | } |
4632 | ||
f092075d CL |
4633 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4634 | nfs4_verifier *bootverf) | |
cd93710e CL |
4635 | { |
4636 | __be32 verf[2]; | |
4637 | ||
2c820d9a CL |
4638 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4639 | /* An impossible timestamp guarantees this value | |
4640 | * will never match a generated boot time. */ | |
4641 | verf[0] = 0; | |
17f26b12 | 4642 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4643 | } else { |
f092075d | 4644 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4645 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4646 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4647 | } |
cd93710e CL |
4648 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4649 | } | |
4650 | ||
e984a55a CL |
4651 | static unsigned int |
4652 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4653 | char *buf, size_t len) | |
4654 | { | |
4655 | unsigned int result; | |
4656 | ||
4657 | rcu_read_lock(); | |
4658 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4659 | clp->cl_ipaddr, | |
4660 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4661 | RPC_DISPLAY_ADDR), | |
4662 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4663 | RPC_DISPLAY_PROTO)); | |
4664 | rcu_read_unlock(); | |
4665 | return result; | |
4666 | } | |
4667 | ||
4668 | static unsigned int | |
4669 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4670 | char *buf, size_t len) | |
4671 | { | |
55b59293 | 4672 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4673 | |
4674 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4675 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4676 | clp->rpc_ops->version, | |
4677 | clp->cl_minorversion, | |
4678 | nfs4_client_id_uniquifier, | |
4679 | nodename); | |
e984a55a CL |
4680 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4681 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4682 | nodename); |
e984a55a CL |
4683 | } |
4684 | ||
6bbb4ae8 CL |
4685 | /** |
4686 | * nfs4_proc_setclientid - Negotiate client ID | |
4687 | * @clp: state data structure | |
4688 | * @program: RPC program for NFSv4 callback service | |
4689 | * @port: IP port number for NFS4 callback service | |
4690 | * @cred: RPC credential to use for this call | |
4691 | * @res: where to place the result | |
4692 | * | |
4693 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4694 | */ | |
bb8b27e5 TM |
4695 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4696 | unsigned short port, struct rpc_cred *cred, | |
4697 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4698 | { |
4699 | nfs4_verifier sc_verifier; | |
4700 | struct nfs4_setclientid setclientid = { | |
4701 | .sc_verifier = &sc_verifier, | |
4702 | .sc_prog = program, | |
f4eecd5d | 4703 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4704 | }; |
4705 | struct rpc_message msg = { | |
4706 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4707 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4708 | .rpc_resp = res, |
286d7d6a | 4709 | .rpc_cred = cred, |
1da177e4 | 4710 | }; |
6bbb4ae8 | 4711 | int status; |
1da177e4 | 4712 | |
de734831 | 4713 | /* nfs_client_id4 */ |
f092075d | 4714 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4715 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4716 | setclientid.sc_name_len = | |
4717 | nfs4_init_uniform_client_string(clp, | |
4718 | setclientid.sc_name, | |
4719 | sizeof(setclientid.sc_name)); | |
4720 | else | |
4721 | setclientid.sc_name_len = | |
4722 | nfs4_init_nonuniform_client_string(clp, | |
4723 | setclientid.sc_name, | |
4724 | sizeof(setclientid.sc_name)); | |
de734831 | 4725 | /* cb_client4 */ |
e984a55a | 4726 | rcu_read_lock(); |
de734831 | 4727 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
fe2d5395 | 4728 | sizeof(setclientid.sc_netid), "%s", |
d4d3c507 CL |
4729 | rpc_peeraddr2str(clp->cl_rpcclient, |
4730 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4731 | rcu_read_unlock(); |
4732 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4733 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4734 | clp->cl_ipaddr, port >> 8, port & 255); |
4735 | ||
6bbb4ae8 CL |
4736 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4737 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4738 | setclientid.sc_name_len, setclientid.sc_name); | |
4739 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4740 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4741 | dprintk("NFS reply setclientid: %d\n", status); |
4742 | return status; | |
1da177e4 LT |
4743 | } |
4744 | ||
6bbb4ae8 CL |
4745 | /** |
4746 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4747 | * @clp: state data structure | |
4748 | * @res: result of a previous SETCLIENTID | |
4749 | * @cred: RPC credential to use for this call | |
4750 | * | |
4751 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4752 | */ | |
fd954ae1 | 4753 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4754 | struct nfs4_setclientid_res *arg, |
4755 | struct rpc_cred *cred) | |
1da177e4 | 4756 | { |
1da177e4 LT |
4757 | struct rpc_message msg = { |
4758 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4759 | .rpc_argp = arg, |
286d7d6a | 4760 | .rpc_cred = cred, |
1da177e4 | 4761 | }; |
1da177e4 LT |
4762 | int status; |
4763 | ||
6bbb4ae8 CL |
4764 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4765 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4766 | clp->cl_clientid); | |
1bd714f2 | 4767 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4768 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4769 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4770 | return status; |
4771 | } | |
4772 | ||
fe650407 TM |
4773 | struct nfs4_delegreturndata { |
4774 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4775 | struct nfs4_delegreturnres res; |
fe650407 TM |
4776 | struct nfs_fh fh; |
4777 | nfs4_stateid stateid; | |
26e976a8 | 4778 | unsigned long timestamp; |
fa178f29 | 4779 | struct nfs_fattr fattr; |
fe650407 TM |
4780 | int rpc_status; |
4781 | }; | |
4782 | ||
fe650407 TM |
4783 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4784 | { | |
4785 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4786 | |
14516c3a TM |
4787 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4788 | return; | |
938e1010 | 4789 | |
79708861 RL |
4790 | switch (task->tk_status) { |
4791 | case -NFS4ERR_STALE_STATEID: | |
4792 | case -NFS4ERR_EXPIRED: | |
4793 | case 0: | |
fa178f29 | 4794 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4795 | break; |
4796 | default: | |
4797 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4798 | -EAGAIN) { | |
d00c5d43 | 4799 | rpc_restart_call_prepare(task); |
79708861 RL |
4800 | return; |
4801 | } | |
4802 | } | |
4803 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4804 | } |
4805 | ||
4806 | static void nfs4_delegreturn_release(void *calldata) | |
4807 | { | |
fe650407 TM |
4808 | kfree(calldata); |
4809 | } | |
4810 | ||
938e1010 AA |
4811 | #if defined(CONFIG_NFS_V4_1) |
4812 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4813 | { | |
4814 | struct nfs4_delegreturndata *d_data; | |
4815 | ||
4816 | d_data = (struct nfs4_delegreturndata *)data; | |
4817 | ||
d9afbd1b TM |
4818 | nfs4_setup_sequence(d_data->res.server, |
4819 | &d_data->args.seq_args, | |
4820 | &d_data->res.seq_res, | |
4821 | task); | |
938e1010 AA |
4822 | } |
4823 | #endif /* CONFIG_NFS_V4_1 */ | |
4824 | ||
c8d149f3 | 4825 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4826 | #if defined(CONFIG_NFS_V4_1) |
4827 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4828 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4829 | .rpc_call_done = nfs4_delegreturn_done, |
4830 | .rpc_release = nfs4_delegreturn_release, | |
4831 | }; | |
4832 | ||
e6f81075 | 4833 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4834 | { |
4835 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4836 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4837 | struct rpc_task *task; |
5138fde0 TM |
4838 | struct rpc_message msg = { |
4839 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4840 | .rpc_cred = cred, | |
4841 | }; | |
c970aa85 TM |
4842 | struct rpc_task_setup task_setup_data = { |
4843 | .rpc_client = server->client, | |
5138fde0 | 4844 | .rpc_message = &msg, |
c970aa85 TM |
4845 | .callback_ops = &nfs4_delegreturn_ops, |
4846 | .flags = RPC_TASK_ASYNC, | |
4847 | }; | |
e6f81075 | 4848 | int status = 0; |
fe650407 | 4849 | |
8535b2be | 4850 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4851 | if (data == NULL) |
4852 | return -ENOMEM; | |
9d12b216 | 4853 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4854 | data->args.fhandle = &data->fh; |
4855 | data->args.stateid = &data->stateid; | |
9e907fec | 4856 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4857 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4858 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4859 | data->res.fattr = &data->fattr; |
4860 | data->res.server = server; | |
5138fde0 | 4861 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4862 | data->timestamp = jiffies; |
fe650407 TM |
4863 | data->rpc_status = 0; |
4864 | ||
c970aa85 | 4865 | task_setup_data.callback_data = data; |
1174dd1f TM |
4866 | msg.rpc_argp = &data->args; |
4867 | msg.rpc_resp = &data->res; | |
c970aa85 | 4868 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4869 | if (IS_ERR(task)) |
fe650407 | 4870 | return PTR_ERR(task); |
e6f81075 TM |
4871 | if (!issync) |
4872 | goto out; | |
fe650407 | 4873 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4874 | if (status != 0) |
4875 | goto out; | |
4876 | status = data->rpc_status; | |
e144cbcc TM |
4877 | if (status == 0) |
4878 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4879 | else | |
4880 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4881 | out: |
e6b3c4db | 4882 | rpc_put_task(task); |
fe650407 | 4883 | return status; |
1da177e4 LT |
4884 | } |
4885 | ||
e6f81075 | 4886 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4887 | { |
4888 | struct nfs_server *server = NFS_SERVER(inode); | |
4889 | struct nfs4_exception exception = { }; | |
4890 | int err; | |
4891 | do { | |
e6f81075 | 4892 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4893 | switch (err) { |
4894 | case -NFS4ERR_STALE_STATEID: | |
4895 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4896 | case 0: |
4897 | return 0; | |
4898 | } | |
4899 | err = nfs4_handle_exception(server, err, &exception); | |
4900 | } while (exception.retry); | |
4901 | return err; | |
4902 | } | |
4903 | ||
4904 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4905 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4906 | ||
4907 | /* | |
4908 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4909 | */ | |
4910 | static unsigned long | |
4911 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4912 | { | |
416ad3c9 | 4913 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
4914 | timeout <<= 1; |
4915 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4916 | return NFS4_LOCK_MAXTIMEOUT; | |
4917 | return timeout; | |
4918 | } | |
4919 | ||
1da177e4 LT |
4920 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4921 | { | |
4922 | struct inode *inode = state->inode; | |
4923 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4924 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4925 | struct nfs_lockt_args arg = { |
1da177e4 | 4926 | .fh = NFS_FH(inode), |
911d1aaf | 4927 | .fl = request, |
1da177e4 | 4928 | }; |
911d1aaf TM |
4929 | struct nfs_lockt_res res = { |
4930 | .denied = request, | |
1da177e4 LT |
4931 | }; |
4932 | struct rpc_message msg = { | |
4933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4934 | .rpc_argp = &arg, | |
4935 | .rpc_resp = &res, | |
4936 | .rpc_cred = state->owner->so_cred, | |
4937 | }; | |
1da177e4 LT |
4938 | struct nfs4_lock_state *lsp; |
4939 | int status; | |
4940 | ||
911d1aaf | 4941 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4942 | status = nfs4_set_lock_state(state, request); |
4943 | if (status != 0) | |
4944 | goto out; | |
4945 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4946 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4947 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4948 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4949 | switch (status) { |
4950 | case 0: | |
4951 | request->fl_type = F_UNLCK; | |
4952 | break; | |
4953 | case -NFS4ERR_DENIED: | |
4954 | status = 0; | |
1da177e4 | 4955 | } |
70cc6487 | 4956 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4957 | out: |
1da177e4 LT |
4958 | return status; |
4959 | } | |
4960 | ||
4961 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4962 | { | |
4963 | struct nfs4_exception exception = { }; | |
4964 | int err; | |
4965 | ||
4966 | do { | |
d1b748a5 TM |
4967 | err = _nfs4_proc_getlk(state, cmd, request); |
4968 | trace_nfs4_get_lock(request, state, cmd, err); | |
4969 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
4970 | &exception); |
4971 | } while (exception.retry); | |
4972 | return err; | |
4973 | } | |
4974 | ||
4975 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4976 | { | |
4977 | int res = 0; | |
4978 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4979 | case FL_POSIX: | |
4980 | res = posix_lock_file_wait(file, fl); | |
4981 | break; | |
4982 | case FL_FLOCK: | |
4983 | res = flock_lock_file_wait(file, fl); | |
4984 | break; | |
4985 | default: | |
4986 | BUG(); | |
4987 | } | |
1da177e4 LT |
4988 | return res; |
4989 | } | |
4990 | ||
faf5f49c | 4991 | struct nfs4_unlockdata { |
911d1aaf TM |
4992 | struct nfs_locku_args arg; |
4993 | struct nfs_locku_res res; | |
faf5f49c TM |
4994 | struct nfs4_lock_state *lsp; |
4995 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4996 | struct file_lock fl; |
4997 | const struct nfs_server *server; | |
26e976a8 | 4998 | unsigned long timestamp; |
faf5f49c TM |
4999 | }; |
5000 | ||
911d1aaf TM |
5001 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5002 | struct nfs_open_context *ctx, | |
5003 | struct nfs4_lock_state *lsp, | |
5004 | struct nfs_seqid *seqid) | |
5005 | { | |
5006 | struct nfs4_unlockdata *p; | |
5007 | struct inode *inode = lsp->ls_state->inode; | |
5008 | ||
8535b2be | 5009 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5010 | if (p == NULL) |
5011 | return NULL; | |
5012 | p->arg.fh = NFS_FH(inode); | |
5013 | p->arg.fl = &p->fl; | |
5014 | p->arg.seqid = seqid; | |
c1d51931 | 5015 | p->res.seqid = seqid; |
911d1aaf TM |
5016 | p->arg.stateid = &lsp->ls_stateid; |
5017 | p->lsp = lsp; | |
5018 | atomic_inc(&lsp->ls_count); | |
5019 | /* Ensure we don't close file until we're done freeing locks! */ | |
5020 | p->ctx = get_nfs_open_context(ctx); | |
5021 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5022 | p->server = NFS_SERVER(inode); | |
5023 | return p; | |
5024 | } | |
5025 | ||
06f814a3 | 5026 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5027 | { |
963d8fe5 | 5028 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5029 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5030 | nfs4_put_lock_state(calldata->lsp); |
5031 | put_nfs_open_context(calldata->ctx); | |
5032 | kfree(calldata); | |
faf5f49c TM |
5033 | } |
5034 | ||
963d8fe5 | 5035 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5036 | { |
963d8fe5 | 5037 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5038 | |
14516c3a TM |
5039 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5040 | return; | |
faf5f49c TM |
5041 | switch (task->tk_status) { |
5042 | case 0: | |
f597c537 TM |
5043 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5044 | &calldata->res.stateid); | |
26e976a8 | 5045 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5046 | break; |
9e33bed5 TM |
5047 | case -NFS4ERR_BAD_STATEID: |
5048 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5049 | case -NFS4ERR_STALE_STATEID: |
5050 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5051 | break; |
5052 | default: | |
9e33bed5 | 5053 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5054 | rpc_restart_call_prepare(task); |
faf5f49c | 5055 | } |
2b1bc308 | 5056 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5057 | } |
5058 | ||
4ce70ada | 5059 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5060 | { |
4ce70ada | 5061 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5062 | |
911d1aaf | 5063 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5064 | goto out_wait; |
795a88c9 | 5065 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5066 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5067 | goto out_no_action; |
faf5f49c | 5068 | } |
26e976a8 | 5069 | calldata->timestamp = jiffies; |
035168ab | 5070 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5071 | &calldata->arg.seq_args, |
2240a9e2 TM |
5072 | &calldata->res.seq_res, |
5073 | task) != 0) | |
5074 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5075 | return; |
5076 | out_no_action: | |
5077 | task->tk_action = NULL; | |
5078 | out_wait: | |
5079 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5080 | } |
5081 | ||
963d8fe5 | 5082 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5083 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5084 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5085 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5086 | }; |
5087 | ||
a5d16a4d TM |
5088 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5089 | struct nfs_open_context *ctx, | |
5090 | struct nfs4_lock_state *lsp, | |
5091 | struct nfs_seqid *seqid) | |
5092 | { | |
5093 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5094 | struct rpc_message msg = { |
5095 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5096 | .rpc_cred = ctx->cred, | |
5097 | }; | |
c970aa85 TM |
5098 | struct rpc_task_setup task_setup_data = { |
5099 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5100 | .rpc_message = &msg, |
c970aa85 | 5101 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5102 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5103 | .flags = RPC_TASK_ASYNC, |
5104 | }; | |
a5d16a4d | 5105 | |
137d6aca FF |
5106 | /* Ensure this is an unlock - when canceling a lock, the |
5107 | * canceled lock is passed in, and it won't be an unlock. | |
5108 | */ | |
5109 | fl->fl_type = F_UNLCK; | |
5110 | ||
a5d16a4d TM |
5111 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5112 | if (data == NULL) { | |
5113 | nfs_free_seqid(seqid); | |
5114 | return ERR_PTR(-ENOMEM); | |
5115 | } | |
5116 | ||
9d12b216 | 5117 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5118 | msg.rpc_argp = &data->arg; |
5119 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5120 | task_setup_data.callback_data = data; |
5121 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5122 | } |
5123 | ||
faf5f49c TM |
5124 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5125 | { | |
65b62a29 TM |
5126 | struct inode *inode = state->inode; |
5127 | struct nfs4_state_owner *sp = state->owner; | |
5128 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5129 | struct nfs_seqid *seqid; |
1da177e4 | 5130 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5131 | struct rpc_task *task; |
5132 | int status = 0; | |
536ff0f8 | 5133 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5134 | |
8d0a8a9d | 5135 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5136 | /* Unlock _before_ we do the RPC call */ |
5137 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5138 | /* Exclude nfs_delegation_claim_locks() */ |
5139 | mutex_lock(&sp->so_delegreturn_mutex); | |
5140 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5141 | down_read(&nfsi->rwsem); |
5142 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5143 | up_read(&nfsi->rwsem); | |
65b62a29 | 5144 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5145 | goto out; |
19e03c57 TM |
5146 | } |
5147 | up_read(&nfsi->rwsem); | |
65b62a29 | 5148 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5149 | if (status != 0) |
9b073574 TM |
5150 | goto out; |
5151 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5152 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5153 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5154 | goto out; | |
8535b2be | 5155 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5156 | status = -ENOMEM; |
911d1aaf | 5157 | if (seqid == NULL) |
9b073574 | 5158 | goto out; |
cd3758e3 | 5159 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5160 | status = PTR_ERR(task); |
5161 | if (IS_ERR(task)) | |
9b073574 | 5162 | goto out; |
a5d16a4d | 5163 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5164 | rpc_put_task(task); |
9b073574 | 5165 | out: |
536ff0f8 | 5166 | request->fl_flags = fl_flags; |
d1b748a5 | 5167 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5168 | return status; |
5169 | } | |
5170 | ||
a5d16a4d TM |
5171 | struct nfs4_lockdata { |
5172 | struct nfs_lock_args arg; | |
5173 | struct nfs_lock_res res; | |
5174 | struct nfs4_lock_state *lsp; | |
5175 | struct nfs_open_context *ctx; | |
5176 | struct file_lock fl; | |
26e976a8 | 5177 | unsigned long timestamp; |
a5d16a4d TM |
5178 | int rpc_status; |
5179 | int cancelled; | |
66179efe | 5180 | struct nfs_server *server; |
a5d16a4d TM |
5181 | }; |
5182 | ||
5183 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5184 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5185 | gfp_t gfp_mask) | |
1da177e4 | 5186 | { |
a5d16a4d TM |
5187 | struct nfs4_lockdata *p; |
5188 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5189 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5190 | |
8535b2be | 5191 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5192 | if (p == NULL) |
5193 | return NULL; | |
5194 | ||
5195 | p->arg.fh = NFS_FH(inode); | |
5196 | p->arg.fl = &p->fl; | |
8535b2be | 5197 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5198 | if (p->arg.open_seqid == NULL) |
5199 | goto out_free; | |
8535b2be | 5200 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5201 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5202 | goto out_free_seqid; |
a5d16a4d | 5203 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5204 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5205 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5206 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5207 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5208 | p->lsp = lsp; |
66179efe | 5209 | p->server = server; |
a5d16a4d TM |
5210 | atomic_inc(&lsp->ls_count); |
5211 | p->ctx = get_nfs_open_context(ctx); | |
5212 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5213 | return p; | |
2f74c0a0 TM |
5214 | out_free_seqid: |
5215 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5216 | out_free: |
5217 | kfree(p); | |
5218 | return NULL; | |
5219 | } | |
5220 | ||
5221 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5222 | { | |
5223 | struct nfs4_lockdata *data = calldata; | |
5224 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5225 | |
3110ff80 | 5226 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5227 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5228 | goto out_wait; |
a5d16a4d TM |
5229 | /* Do we need to do an open_to_lock_owner? */ |
5230 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5231 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5232 | goto out_release_lock_seqid; |
8fe72bac | 5233 | } |
8e472f33 | 5234 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5235 | data->arg.new_lock_owner = 1; |
c1d51931 | 5236 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5237 | } else |
5238 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5239 | if (!nfs4_valid_open_stateid(state)) { |
5240 | data->rpc_status = -EBADF; | |
5241 | task->tk_action = NULL; | |
5242 | goto out_release_open_seqid; | |
5243 | } | |
26e976a8 | 5244 | data->timestamp = jiffies; |
035168ab TM |
5245 | if (nfs4_setup_sequence(data->server, |
5246 | &data->arg.seq_args, | |
2240a9e2 | 5247 | &data->res.seq_res, |
d9afbd1b | 5248 | task) == 0) |
66179efe | 5249 | return; |
5d422301 | 5250 | out_release_open_seqid: |
2240a9e2 TM |
5251 | nfs_release_seqid(data->arg.open_seqid); |
5252 | out_release_lock_seqid: | |
5253 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5254 | out_wait: |
5255 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5256 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5257 | } |
5258 | ||
a5d16a4d TM |
5259 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5260 | { | |
5261 | struct nfs4_lockdata *data = calldata; | |
5262 | ||
3110ff80 | 5263 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5264 | |
14516c3a TM |
5265 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5266 | return; | |
66179efe | 5267 | |
a5d16a4d | 5268 | data->rpc_status = task->tk_status; |
a5d16a4d | 5269 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5270 | if (data->rpc_status == 0) |
5271 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5272 | else | |
5273 | goto out; | |
5274 | } | |
5275 | if (data->rpc_status == 0) { | |
f597c537 | 5276 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5277 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5278 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5279 | } |
a5d16a4d | 5280 | out: |
3110ff80 | 5281 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5282 | } |
5283 | ||
5284 | static void nfs4_lock_release(void *calldata) | |
5285 | { | |
5286 | struct nfs4_lockdata *data = calldata; | |
5287 | ||
3110ff80 | 5288 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5289 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5290 | if (data->cancelled != 0) { |
5291 | struct rpc_task *task; | |
5292 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5293 | data->arg.lock_seqid); | |
5294 | if (!IS_ERR(task)) | |
bf294b41 | 5295 | rpc_put_task_async(task); |
3110ff80 | 5296 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5297 | } else |
5298 | nfs_free_seqid(data->arg.lock_seqid); | |
5299 | nfs4_put_lock_state(data->lsp); | |
5300 | put_nfs_open_context(data->ctx); | |
5301 | kfree(data); | |
3110ff80 | 5302 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5303 | } |
5304 | ||
5305 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5306 | .rpc_call_prepare = nfs4_lock_prepare, | |
5307 | .rpc_call_done = nfs4_lock_done, | |
5308 | .rpc_release = nfs4_lock_release, | |
5309 | }; | |
5310 | ||
2bee72a6 TM |
5311 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5312 | { | |
2bee72a6 TM |
5313 | switch (error) { |
5314 | case -NFS4ERR_ADMIN_REVOKED: | |
5315 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5316 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5317 | if (new_lock_owner != 0 || |
795a88c9 | 5318 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5319 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5320 | break; |
5321 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5322 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5323 | case -NFS4ERR_EXPIRED: |
5324 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5325 | }; |
5326 | } | |
5327 | ||
afe6c27c | 5328 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5329 | { |
5330 | struct nfs4_lockdata *data; | |
5331 | struct rpc_task *task; | |
5138fde0 TM |
5332 | struct rpc_message msg = { |
5333 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5334 | .rpc_cred = state->owner->so_cred, | |
5335 | }; | |
c970aa85 TM |
5336 | struct rpc_task_setup task_setup_data = { |
5337 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5338 | .rpc_message = &msg, |
c970aa85 | 5339 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5340 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5341 | .flags = RPC_TASK_ASYNC, |
5342 | }; | |
a5d16a4d TM |
5343 | int ret; |
5344 | ||
3110ff80 | 5345 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5346 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5347 | fl->fl_u.nfs4_fl.owner, |
5348 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5349 | if (data == NULL) |
5350 | return -ENOMEM; | |
5351 | if (IS_SETLKW(cmd)) | |
5352 | data->arg.block = 1; | |
9d12b216 | 5353 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5354 | msg.rpc_argp = &data->arg; |
5355 | msg.rpc_resp = &data->res; | |
c970aa85 | 5356 | task_setup_data.callback_data = data; |
8fe72bac TM |
5357 | if (recovery_type > NFS_LOCK_NEW) { |
5358 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5359 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5360 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5361 | } | |
c970aa85 | 5362 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5363 | if (IS_ERR(task)) |
a5d16a4d | 5364 | return PTR_ERR(task); |
a5d16a4d TM |
5365 | ret = nfs4_wait_for_completion_rpc_task(task); |
5366 | if (ret == 0) { | |
5367 | ret = data->rpc_status; | |
2bee72a6 TM |
5368 | if (ret) |
5369 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5370 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5371 | } else |
5372 | data->cancelled = 1; | |
e6b3c4db | 5373 | rpc_put_task(task); |
3110ff80 | 5374 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5375 | return ret; |
1da177e4 LT |
5376 | } |
5377 | ||
5378 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5379 | { | |
202b50dc | 5380 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5381 | struct nfs4_exception exception = { |
5382 | .inode = state->inode, | |
5383 | }; | |
202b50dc TM |
5384 | int err; |
5385 | ||
5386 | do { | |
42a2d13e TM |
5387 | /* Cache the lock if possible... */ |
5388 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5389 | return 0; | |
afe6c27c | 5390 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5391 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5392 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5393 | break; |
5394 | nfs4_handle_exception(server, err, &exception); | |
5395 | } while (exception.retry); | |
5396 | return err; | |
1da177e4 LT |
5397 | } |
5398 | ||
5399 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5400 | { | |
202b50dc | 5401 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5402 | struct nfs4_exception exception = { |
5403 | .inode = state->inode, | |
5404 | }; | |
202b50dc TM |
5405 | int err; |
5406 | ||
6bfc93ef TM |
5407 | err = nfs4_set_lock_state(state, request); |
5408 | if (err != 0) | |
5409 | return err; | |
202b50dc | 5410 | do { |
42a2d13e TM |
5411 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5412 | return 0; | |
afe6c27c | 5413 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5414 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5415 | switch (err) { |
5416 | default: | |
5417 | goto out; | |
5418 | case -NFS4ERR_GRACE: | |
5419 | case -NFS4ERR_DELAY: | |
5420 | nfs4_handle_exception(server, err, &exception); | |
5421 | err = 0; | |
5422 | } | |
202b50dc | 5423 | } while (exception.retry); |
a9ed2e25 | 5424 | out: |
202b50dc | 5425 | return err; |
1da177e4 LT |
5426 | } |
5427 | ||
f062eb6c | 5428 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5429 | /** |
5430 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5431 | * | |
5432 | * @state: NFSv4 state for an inode | |
5433 | * | |
5434 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5435 | * Otherwise a negative NFS4ERR value is returned. | |
5436 | */ | |
b01dd1d8 | 5437 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5438 | { |
eb64cf96 | 5439 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5440 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5441 | struct nfs_server *server = NFS_SERVER(state->inode); |
5442 | ||
b01dd1d8 | 5443 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5444 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5445 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5446 | ||
5447 | status = nfs41_test_stateid(server, | |
5448 | &lsp->ls_stateid, | |
5449 | cred); | |
b01dd1d8 | 5450 | if (status != NFS_OK) { |
3e60ffdd CL |
5451 | /* Free the stateid unless the server |
5452 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5453 | if (status != -NFS4ERR_BAD_STATEID) |
5454 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5455 | &lsp->ls_stateid, |
5456 | cred); | |
795a88c9 | 5457 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5458 | ret = status; |
5459 | } | |
5460 | } | |
5461 | }; | |
5462 | ||
5463 | return ret; | |
5464 | } | |
5465 | ||
5466 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5467 | { | |
5468 | int status = NFS_OK; | |
5469 | ||
5470 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5471 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5472 | if (status != NFS_OK) |
5473 | status = nfs4_lock_expired(state, request); | |
5474 | return status; | |
f062eb6c BS |
5475 | } |
5476 | #endif | |
5477 | ||
1da177e4 LT |
5478 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5479 | { | |
9a99af49 | 5480 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5481 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5482 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5483 | unsigned int seq; |
8e469ebd | 5484 | int status = -ENOLCK; |
1da177e4 | 5485 | |
8e469ebd TM |
5486 | if ((fl_flags & FL_POSIX) && |
5487 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5488 | goto out; | |
6bfc93ef | 5489 | /* Is this a delegated open? */ |
6bfc93ef TM |
5490 | status = nfs4_set_lock_state(state, request); |
5491 | if (status != 0) | |
5492 | goto out; | |
01c3b861 TM |
5493 | request->fl_flags |= FL_ACCESS; |
5494 | status = do_vfs_lock(request->fl_file, request); | |
5495 | if (status < 0) | |
5496 | goto out; | |
19e03c57 | 5497 | down_read(&nfsi->rwsem); |
01c3b861 | 5498 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5499 | /* Yes: cache locks! */ |
01c3b861 | 5500 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5501 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5502 | status = do_vfs_lock(request->fl_file, request); | |
5503 | goto out_unlock; | |
01c3b861 | 5504 | } |
9a99af49 TM |
5505 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5506 | up_read(&nfsi->rwsem); | |
afe6c27c | 5507 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5508 | if (status != 0) |
9a99af49 TM |
5509 | goto out; |
5510 | down_read(&nfsi->rwsem); | |
5511 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5512 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5513 | goto out_unlock; |
9a99af49 | 5514 | } |
6bfc93ef | 5515 | /* Note: we always want to sleep here! */ |
01c3b861 | 5516 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5517 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5518 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5519 | "manager!\n", __func__); | |
01c3b861 | 5520 | out_unlock: |
19e03c57 | 5521 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5522 | out: |
5523 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5524 | return status; |
5525 | } | |
5526 | ||
5527 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5528 | { | |
a1d0b5ee TM |
5529 | struct nfs4_exception exception = { |
5530 | .state = state, | |
05ffe24f | 5531 | .inode = state->inode, |
a1d0b5ee | 5532 | }; |
1da177e4 LT |
5533 | int err; |
5534 | ||
5535 | do { | |
965b5d67 | 5536 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5537 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5538 | if (err == -NFS4ERR_DENIED) |
5539 | err = -EAGAIN; | |
1da177e4 | 5540 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5541 | err, &exception); |
1da177e4 LT |
5542 | } while (exception.retry); |
5543 | return err; | |
5544 | } | |
5545 | ||
5546 | static int | |
5547 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5548 | { | |
5549 | struct nfs_open_context *ctx; | |
5550 | struct nfs4_state *state; | |
5551 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5552 | int status; | |
5553 | ||
5554 | /* verify open state */ | |
cd3758e3 | 5555 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5556 | state = ctx->state; |
5557 | ||
5558 | if (request->fl_start < 0 || request->fl_end < 0) | |
5559 | return -EINVAL; | |
5560 | ||
d953126a TM |
5561 | if (IS_GETLK(cmd)) { |
5562 | if (state != NULL) | |
5563 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5564 | return 0; | |
5565 | } | |
1da177e4 LT |
5566 | |
5567 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5568 | return -EINVAL; | |
5569 | ||
d953126a TM |
5570 | if (request->fl_type == F_UNLCK) { |
5571 | if (state != NULL) | |
5572 | return nfs4_proc_unlck(state, cmd, request); | |
5573 | return 0; | |
5574 | } | |
1da177e4 | 5575 | |
d953126a TM |
5576 | if (state == NULL) |
5577 | return -ENOLCK; | |
55725513 TM |
5578 | /* |
5579 | * Don't rely on the VFS having checked the file open mode, | |
5580 | * since it won't do this for flock() locks. | |
5581 | */ | |
f44106e2 | 5582 | switch (request->fl_type) { |
55725513 TM |
5583 | case F_RDLCK: |
5584 | if (!(filp->f_mode & FMODE_READ)) | |
5585 | return -EBADF; | |
5586 | break; | |
5587 | case F_WRLCK: | |
5588 | if (!(filp->f_mode & FMODE_WRITE)) | |
5589 | return -EBADF; | |
5590 | } | |
5591 | ||
1da177e4 LT |
5592 | do { |
5593 | status = nfs4_proc_setlk(state, cmd, request); | |
5594 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5595 | break; | |
5596 | timeout = nfs4_set_lock_task_retry(timeout); | |
5597 | status = -ERESTARTSYS; | |
5598 | if (signalled()) | |
5599 | break; | |
5600 | } while(status < 0); | |
1da177e4 LT |
5601 | return status; |
5602 | } | |
5603 | ||
db4f2e63 | 5604 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5605 | { |
5606 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5607 | int err; |
5608 | ||
5609 | err = nfs4_set_lock_state(state, fl); | |
5610 | if (err != 0) | |
db4f2e63 | 5611 | return err; |
4a706fa0 | 5612 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5613 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5614 | } |
6b3b5496 | 5615 | |
cf470c3e TM |
5616 | struct nfs_release_lockowner_data { |
5617 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5618 | struct nfs_server *server; |
cf470c3e TM |
5619 | struct nfs_release_lockowner_args args; |
5620 | }; | |
5621 | ||
d3c7b7cc TM |
5622 | static void nfs4_release_lockowner_release(void *calldata) |
5623 | { | |
cf470c3e | 5624 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5625 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5626 | kfree(calldata); |
5627 | } | |
5628 | ||
17280175 | 5629 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5630 | .rpc_release = nfs4_release_lockowner_release, |
5631 | }; | |
5632 | ||
c8b2d0bf | 5633 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5634 | { |
cf470c3e | 5635 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5636 | struct rpc_message msg = { |
5637 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5638 | }; | |
5639 | ||
5640 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5641 | return -EINVAL; |
5642 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5643 | if (!data) | |
5644 | return -ENOMEM; | |
5645 | data->lsp = lsp; | |
5ae67c4f | 5646 | data->server = server; |
cf470c3e TM |
5647 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5648 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5649 | data->args.lock_owner.s_dev = server->s_dev; | |
5650 | msg.rpc_argp = &data->args; | |
5651 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5652 | return 0; | |
d3c7b7cc TM |
5653 | } |
5654 | ||
aa1870af BF |
5655 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5656 | ||
64c2ce8b AK |
5657 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5658 | const void *buf, size_t buflen, | |
5659 | int flags, int type) | |
6b3b5496 | 5660 | { |
64c2ce8b AK |
5661 | if (strcmp(key, "") != 0) |
5662 | return -EINVAL; | |
4b580ee3 | 5663 | |
64c2ce8b | 5664 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5665 | } |
5666 | ||
64c2ce8b AK |
5667 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5668 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5669 | { |
64c2ce8b AK |
5670 | if (strcmp(key, "") != 0) |
5671 | return -EINVAL; | |
aa1870af | 5672 | |
64c2ce8b | 5673 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5674 | } |
5675 | ||
64c2ce8b AK |
5676 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5677 | size_t list_len, const char *name, | |
5678 | size_t name_len, int type) | |
6b3b5496 | 5679 | { |
64c2ce8b | 5680 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5681 | |
096455a2 BF |
5682 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5683 | return 0; | |
64c2ce8b AK |
5684 | |
5685 | if (list && len <= list_len) | |
5686 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5687 | return len; |
6b3b5496 BF |
5688 | } |
5689 | ||
c9bccef6 DQ |
5690 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5691 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5692 | { | |
5693 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5694 | } | |
5695 | ||
5696 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5697 | const void *buf, size_t buflen, | |
5698 | int flags, int type) | |
5699 | { | |
5700 | if (security_ismaclabel(key)) | |
5701 | return nfs4_set_security_label(dentry, buf, buflen); | |
5702 | ||
5703 | return -EOPNOTSUPP; | |
5704 | } | |
5705 | ||
5706 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5707 | void *buf, size_t buflen, int type) | |
5708 | { | |
5709 | if (security_ismaclabel(key)) | |
5710 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5711 | return -EOPNOTSUPP; | |
5712 | } | |
5713 | ||
5714 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5715 | size_t list_len, const char *name, | |
5716 | size_t name_len, int type) | |
5717 | { | |
5718 | size_t len = 0; | |
5719 | ||
5720 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5721 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5722 | if (list && len <= list_len) | |
5723 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5724 | } | |
5725 | return len; | |
5726 | } | |
5727 | ||
5728 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5729 | .prefix = XATTR_SECURITY_PREFIX, | |
5730 | .list = nfs4_xattr_list_nfs4_label, | |
5731 | .get = nfs4_xattr_get_nfs4_label, | |
5732 | .set = nfs4_xattr_set_nfs4_label, | |
5733 | }; | |
5734 | #endif | |
5735 | ||
5736 | ||
533eb461 AA |
5737 | /* |
5738 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5739 | */ | |
69aaaae1 TM |
5740 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5741 | { | |
533eb461 AA |
5742 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5743 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5744 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5745 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5746 | return; |
5747 | ||
5748 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5749 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5750 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5751 | fattr->nlink = 2; | |
5752 | } | |
5753 | ||
f05d147f BS |
5754 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5755 | const struct qstr *name, | |
5756 | struct nfs4_fs_locations *fs_locations, | |
5757 | struct page *page) | |
683b57b4 TM |
5758 | { |
5759 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5760 | u32 bitmask[3] = { |
361e624f | 5761 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5762 | }; |
5763 | struct nfs4_fs_locations_arg args = { | |
5764 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5765 | .name = name, |
683b57b4 TM |
5766 | .page = page, |
5767 | .bitmask = bitmask, | |
5768 | }; | |
22958463 BH |
5769 | struct nfs4_fs_locations_res res = { |
5770 | .fs_locations = fs_locations, | |
5771 | }; | |
683b57b4 TM |
5772 | struct rpc_message msg = { |
5773 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5774 | .rpc_argp = &args, | |
22958463 | 5775 | .rpc_resp = &res, |
683b57b4 TM |
5776 | }; |
5777 | int status; | |
5778 | ||
3110ff80 | 5779 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5780 | |
5781 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5782 | * is not supported */ | |
5783 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5784 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5785 | else | |
5786 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5787 | ||
c228fd3a | 5788 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5789 | fs_locations->server = server; |
830b8e33 | 5790 | fs_locations->nlocations = 0; |
f05d147f | 5791 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5792 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5793 | return status; |
5794 | } | |
5795 | ||
f05d147f BS |
5796 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5797 | const struct qstr *name, | |
5798 | struct nfs4_fs_locations *fs_locations, | |
5799 | struct page *page) | |
db0a9593 BS |
5800 | { |
5801 | struct nfs4_exception exception = { }; | |
5802 | int err; | |
5803 | do { | |
5804 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5805 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5806 | &exception); |
5807 | } while (exception.retry); | |
5808 | return err; | |
5809 | } | |
5810 | ||
5ec16a85 AA |
5811 | /** |
5812 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
5813 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
5814 | */ | |
5a5ea0d4 BS |
5815 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5816 | { | |
5817 | int status; | |
5818 | struct nfs4_secinfo_arg args = { | |
5819 | .dir_fh = NFS_FH(dir), | |
5820 | .name = name, | |
5821 | }; | |
5822 | struct nfs4_secinfo_res res = { | |
5823 | .flavors = flavors, | |
5824 | }; | |
5825 | struct rpc_message msg = { | |
5826 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5827 | .rpc_argp = &args, | |
5828 | .rpc_resp = &res, | |
5829 | }; | |
5ec16a85 | 5830 | struct rpc_clnt *clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; |
5a5ea0d4 BS |
5831 | |
5832 | dprintk("NFS call secinfo %s\n", name->name); | |
5ec16a85 | 5833 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
5a5ea0d4 BS |
5834 | dprintk("NFS reply secinfo: %d\n", status); |
5835 | return status; | |
5836 | } | |
5837 | ||
72de53ec BS |
5838 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5839 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5840 | { |
5841 | struct nfs4_exception exception = { }; | |
5842 | int err; | |
5843 | do { | |
5844 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5845 | _nfs4_proc_secinfo(dir, name, flavors), | |
5846 | &exception); | |
5847 | } while (exception.retry); | |
5848 | return err; | |
5849 | } | |
5850 | ||
557134a3 | 5851 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5852 | /* |
5853 | * Check the exchange flags returned by the server for invalid flags, having | |
5854 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5855 | * DS flags set. | |
5856 | */ | |
5857 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5858 | { | |
5859 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5860 | goto out_inval; | |
5861 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5862 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5863 | goto out_inval; | |
5864 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5865 | goto out_inval; | |
5866 | return NFS_OK; | |
5867 | out_inval: | |
5868 | return -NFS4ERR_INVAL; | |
5869 | } | |
5870 | ||
78fe0f41 | 5871 | static bool |
79d4e1f0 CL |
5872 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5873 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5874 | { |
5875 | if (a->server_scope_sz == b->server_scope_sz && | |
5876 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5877 | return true; | |
5878 | ||
5879 | return false; | |
5880 | } | |
5881 | ||
7c44f1ae WAA |
5882 | /* |
5883 | * nfs4_proc_bind_conn_to_session() | |
5884 | * | |
5885 | * The 4.1 client currently uses the same TCP connection for the | |
5886 | * fore and backchannel. | |
5887 | */ | |
2cf047c9 | 5888 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5889 | { |
5890 | int status; | |
5891 | struct nfs41_bind_conn_to_session_res res; | |
5892 | struct rpc_message msg = { | |
5893 | .rpc_proc = | |
5894 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5895 | .rpc_argp = clp, | |
5896 | .rpc_resp = &res, | |
2cf047c9 | 5897 | .rpc_cred = cred, |
7c44f1ae WAA |
5898 | }; |
5899 | ||
5900 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5901 | |
5902 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5903 | if (unlikely(res.session == NULL)) { | |
5904 | status = -ENOMEM; | |
5905 | goto out; | |
5906 | } | |
5907 | ||
5908 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 5909 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
5910 | if (status == 0) { |
5911 | if (memcmp(res.session->sess_id.data, | |
5912 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5913 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5914 | status = -EIO; | |
5915 | goto out_session; | |
5916 | } | |
5917 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5918 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5919 | __func__); | |
5920 | status = -EIO; | |
5921 | goto out_session; | |
5922 | } | |
5923 | if (res.use_conn_in_rdma_mode) { | |
5924 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5925 | __func__); | |
5926 | status = -EIO; | |
5927 | goto out_session; | |
5928 | } | |
5929 | } | |
5930 | out_session: | |
5931 | kfree(res.session); | |
5932 | out: | |
5933 | dprintk("<-- %s status= %d\n", __func__, status); | |
5934 | return status; | |
5935 | } | |
5936 | ||
99fe60d0 BH |
5937 | /* |
5938 | * nfs4_proc_exchange_id() | |
5939 | * | |
6bbb4ae8 CL |
5940 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5941 | * | |
99fe60d0 BH |
5942 | * Since the clientid has expired, all compounds using sessions |
5943 | * associated with the stale clientid will be returning | |
5944 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5945 | * be in some phase of session reset. | |
5946 | */ | |
4d643d1d | 5947 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5948 | { |
5949 | nfs4_verifier verifier; | |
5950 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5951 | .verifier = &verifier, |
99fe60d0 | 5952 | .client = clp, |
4f0b429d TM |
5953 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
5954 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
5955 | }; |
5956 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5957 | 0 |
99fe60d0 BH |
5958 | }; |
5959 | int status; | |
5960 | struct rpc_message msg = { | |
5961 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5962 | .rpc_argp = &args, | |
5963 | .rpc_resp = &res, | |
5964 | .rpc_cred = cred, | |
5965 | }; | |
99fe60d0 | 5966 | |
f092075d | 5967 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5968 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5969 | sizeof(args.id)); | |
6bbb4ae8 CL |
5970 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5971 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5972 | args.id_len, args.id); | |
99fe60d0 | 5973 | |
acdeb69d | 5974 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5975 | GFP_NOFS); |
acdeb69d | 5976 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5977 | status = -ENOMEM; |
5978 | goto out; | |
5979 | } | |
78fe0f41 | 5980 | |
79d4e1f0 | 5981 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5982 | GFP_NOFS); |
177313f1 | 5983 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5984 | status = -ENOMEM; |
acdeb69d | 5985 | goto out_server_owner; |
abe9a6d5 | 5986 | } |
78fe0f41 | 5987 | |
bbafffd2 | 5988 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5989 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5990 | status = -ENOMEM; |
5991 | goto out_server_scope; | |
5992 | } | |
5993 | ||
1bd714f2 | 5994 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5995 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 5996 | if (status == 0) |
32b01310 | 5997 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5998 | |
acdeb69d | 5999 | if (status == 0) { |
32b01310 TM |
6000 | clp->cl_clientid = res.clientid; |
6001 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6002 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6003 | clp->cl_seqid = res.seqid; | |
6004 | ||
acdeb69d CL |
6005 | kfree(clp->cl_serverowner); |
6006 | clp->cl_serverowner = res.server_owner; | |
6007 | res.server_owner = NULL; | |
78fe0f41 | 6008 | |
7d2ed9ac | 6009 | /* use the most recent implementation id */ |
59155546 CL |
6010 | kfree(clp->cl_implid); |
6011 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6012 | |
177313f1 | 6013 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6014 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6015 | res.server_scope)) { |
6016 | dprintk("%s: server_scope mismatch detected\n", | |
6017 | __func__); | |
6018 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6019 | kfree(clp->cl_serverscope); |
6020 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6021 | } |
6022 | ||
177313f1 | 6023 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6024 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6025 | goto out; |
6026 | } | |
32b01310 TM |
6027 | } else |
6028 | kfree(res.impl_id); | |
7d2ed9ac | 6029 | |
acdeb69d CL |
6030 | out_server_owner: |
6031 | kfree(res.server_owner); | |
7d2ed9ac | 6032 | out_server_scope: |
abe9a6d5 WAA |
6033 | kfree(res.server_scope); |
6034 | out: | |
177313f1 | 6035 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6036 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6037 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6038 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6039 | clp->cl_implid->date.seconds, |
6040 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6041 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6042 | return status; |
6043 | } | |
6044 | ||
66245539 TM |
6045 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6046 | struct rpc_cred *cred) | |
6047 | { | |
6048 | struct rpc_message msg = { | |
6049 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6050 | .rpc_argp = clp, | |
6051 | .rpc_cred = cred, | |
6052 | }; | |
6053 | int status; | |
6054 | ||
6055 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6056 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6057 | if (status) |
02c67525 | 6058 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6059 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6060 | return status; | |
6061 | } | |
6062 | ||
6063 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6064 | struct rpc_cred *cred) | |
6065 | { | |
6066 | unsigned int loop; | |
6067 | int ret; | |
6068 | ||
6069 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6070 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6071 | switch (ret) { | |
6072 | case -NFS4ERR_DELAY: | |
6073 | case -NFS4ERR_CLIENTID_BUSY: | |
6074 | ssleep(1); | |
6075 | break; | |
6076 | default: | |
6077 | return ret; | |
6078 | } | |
6079 | } | |
6080 | return 0; | |
6081 | } | |
6082 | ||
6083 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6084 | { | |
6085 | struct rpc_cred *cred; | |
6086 | int ret = 0; | |
6087 | ||
6088 | if (clp->cl_mvops->minor_version < 1) | |
6089 | goto out; | |
6090 | if (clp->cl_exchange_flags == 0) | |
6091 | goto out; | |
05f4c350 CL |
6092 | if (clp->cl_preserve_clid) |
6093 | goto out; | |
73d8bde5 | 6094 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6095 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6096 | if (cred) | |
6097 | put_rpccred(cred); | |
6098 | switch (ret) { | |
6099 | case 0: | |
6100 | case -NFS4ERR_STALE_CLIENTID: | |
6101 | clp->cl_exchange_flags = 0; | |
6102 | } | |
6103 | out: | |
6104 | return ret; | |
6105 | } | |
6106 | ||
2050f0cc AA |
6107 | struct nfs4_get_lease_time_data { |
6108 | struct nfs4_get_lease_time_args *args; | |
6109 | struct nfs4_get_lease_time_res *res; | |
6110 | struct nfs_client *clp; | |
6111 | }; | |
6112 | ||
6113 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6114 | void *calldata) | |
6115 | { | |
2050f0cc AA |
6116 | struct nfs4_get_lease_time_data *data = |
6117 | (struct nfs4_get_lease_time_data *)calldata; | |
6118 | ||
6119 | dprintk("--> %s\n", __func__); | |
6120 | /* just setup sequence, do not trigger session recovery | |
6121 | since we're invoked within one */ | |
d9afbd1b TM |
6122 | nfs41_setup_sequence(data->clp->cl_session, |
6123 | &data->args->la_seq_args, | |
6124 | &data->res->lr_seq_res, | |
6125 | task); | |
2050f0cc AA |
6126 | dprintk("<-- %s\n", __func__); |
6127 | } | |
6128 | ||
6129 | /* | |
6130 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6131 | * from sequence operation or clientid errors. | |
6132 | */ | |
6133 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6134 | { | |
6135 | struct nfs4_get_lease_time_data *data = | |
6136 | (struct nfs4_get_lease_time_data *)calldata; | |
6137 | ||
6138 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6139 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6140 | return; | |
2050f0cc AA |
6141 | switch (task->tk_status) { |
6142 | case -NFS4ERR_DELAY: | |
6143 | case -NFS4ERR_GRACE: | |
6144 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6145 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6146 | task->tk_status = 0; | |
a8a4ae3a AA |
6147 | /* fall through */ |
6148 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6149 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6150 | return; |
6151 | } | |
2050f0cc AA |
6152 | dprintk("<-- %s\n", __func__); |
6153 | } | |
6154 | ||
17280175 | 6155 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6156 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6157 | .rpc_call_done = nfs4_get_lease_time_done, | |
6158 | }; | |
6159 | ||
6160 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6161 | { | |
6162 | struct rpc_task *task; | |
6163 | struct nfs4_get_lease_time_args args; | |
6164 | struct nfs4_get_lease_time_res res = { | |
6165 | .lr_fsinfo = fsinfo, | |
6166 | }; | |
6167 | struct nfs4_get_lease_time_data data = { | |
6168 | .args = &args, | |
6169 | .res = &res, | |
6170 | .clp = clp, | |
6171 | }; | |
6172 | struct rpc_message msg = { | |
6173 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6174 | .rpc_argp = &args, | |
6175 | .rpc_resp = &res, | |
6176 | }; | |
6177 | struct rpc_task_setup task_setup = { | |
6178 | .rpc_client = clp->cl_rpcclient, | |
6179 | .rpc_message = &msg, | |
6180 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6181 | .callback_data = &data, |
6182 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6183 | }; |
6184 | int status; | |
6185 | ||
9d12b216 | 6186 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6187 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6188 | dprintk("--> %s\n", __func__); |
6189 | task = rpc_run_task(&task_setup); | |
6190 | ||
6191 | if (IS_ERR(task)) | |
6192 | status = PTR_ERR(task); | |
6193 | else { | |
6194 | status = task->tk_status; | |
6195 | rpc_put_task(task); | |
6196 | } | |
6197 | dprintk("<-- %s return %d\n", __func__, status); | |
6198 | ||
6199 | return status; | |
6200 | } | |
6201 | ||
fc931582 AA |
6202 | /* |
6203 | * Initialize the values to be used by the client in CREATE_SESSION | |
6204 | * If nfs4_init_session set the fore channel request and response sizes, | |
6205 | * use them. | |
6206 | * | |
6207 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6208 | * always set csa_cachethis to FALSE because the current implementation | |
6209 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6210 | */ | |
6211 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6212 | { | |
18aad3d5 AA |
6213 | unsigned int max_rqst_sz, max_resp_sz; |
6214 | ||
6215 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6216 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6217 | |
fc931582 | 6218 | /* Fore channel attributes */ |
18aad3d5 AA |
6219 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6220 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6221 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6222 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6223 | |
6224 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6225 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6226 | __func__, |
6227 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6228 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6229 | |
6230 | /* Back channel attributes */ | |
fc931582 AA |
6231 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6232 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6233 | args->bc_attrs.max_resp_sz_cached = 0; | |
6234 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6235 | args->bc_attrs.max_reqs = 1; | |
6236 | ||
6237 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6238 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6239 | __func__, | |
6240 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6241 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6242 | args->bc_attrs.max_reqs); | |
6243 | } | |
6244 | ||
43c2e885 | 6245 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6246 | { |
43c2e885 BF |
6247 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6248 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6249 | ||
43c2e885 BF |
6250 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6251 | return -EINVAL; | |
6252 | /* | |
6253 | * Our requested max_ops is the minimum we need; we're not | |
6254 | * prepared to break up compounds into smaller pieces than that. | |
6255 | * So, no point even trying to continue if the server won't | |
6256 | * cooperate: | |
6257 | */ | |
6258 | if (rcvd->max_ops < sent->max_ops) | |
6259 | return -EINVAL; | |
6260 | if (rcvd->max_reqs == 0) | |
6261 | return -EINVAL; | |
b4b9a0c1 VG |
6262 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6263 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 6264 | return 0; |
8d35301d AA |
6265 | } |
6266 | ||
43c2e885 BF |
6267 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
6268 | { | |
6269 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
6270 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 6271 | |
43c2e885 BF |
6272 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
6273 | return -EINVAL; | |
6274 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
6275 | return -EINVAL; | |
6276 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
6277 | return -EINVAL; | |
6278 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 6279 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 6280 | return -EINVAL; |
b4b9a0c1 | 6281 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
6282 | return -EINVAL; |
6283 | return 0; | |
6284 | } | |
8d35301d | 6285 | |
8d35301d AA |
6286 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6287 | struct nfs4_session *session) | |
6288 | { | |
43c2e885 | 6289 | int ret; |
8d35301d | 6290 | |
43c2e885 BF |
6291 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6292 | if (ret) | |
6293 | return ret; | |
6294 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6295 | } |
6296 | ||
848f5bda TM |
6297 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6298 | struct rpc_cred *cred) | |
fc931582 AA |
6299 | { |
6300 | struct nfs4_session *session = clp->cl_session; | |
6301 | struct nfs41_create_session_args args = { | |
6302 | .client = clp, | |
6303 | .cb_program = NFS4_CALLBACK, | |
6304 | }; | |
6305 | struct nfs41_create_session_res res = { | |
6306 | .client = clp, | |
6307 | }; | |
6308 | struct rpc_message msg = { | |
6309 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6310 | .rpc_argp = &args, | |
6311 | .rpc_resp = &res, | |
848f5bda | 6312 | .rpc_cred = cred, |
fc931582 AA |
6313 | }; |
6314 | int status; | |
6315 | ||
6316 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6317 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6318 | |
1bd714f2 | 6319 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6320 | trace_nfs4_create_session(clp, status); |
fc931582 | 6321 | |
43095d39 | 6322 | if (!status) { |
8d35301d AA |
6323 | /* Verify the session's negotiated channel_attrs values */ |
6324 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6325 | /* Increment the clientid slot sequence id */ |
6326 | clp->cl_seqid++; | |
6327 | } | |
6328 | ||
6329 | return status; | |
6330 | } | |
6331 | ||
6332 | /* | |
6333 | * Issues a CREATE_SESSION operation to the server. | |
6334 | * It is the responsibility of the caller to verify the session is | |
6335 | * expired before calling this routine. | |
6336 | */ | |
848f5bda | 6337 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6338 | { |
6339 | int status; | |
6340 | unsigned *ptr; | |
fc931582 AA |
6341 | struct nfs4_session *session = clp->cl_session; |
6342 | ||
6343 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6344 | ||
848f5bda | 6345 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6346 | if (status) |
6347 | goto out; | |
6348 | ||
aacd5537 AA |
6349 | /* Init or reset the session slot tables */ |
6350 | status = nfs4_setup_session_slot_tables(session); | |
6351 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6352 | if (status) |
6353 | goto out; | |
6354 | ||
6355 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6356 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6357 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6358 | out: |
6359 | dprintk("<-- %s\n", __func__); | |
6360 | return status; | |
6361 | } | |
6362 | ||
0f3e66c6 AA |
6363 | /* |
6364 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6365 | * The caller must serialize access to this routine. | |
6366 | */ | |
848f5bda TM |
6367 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6368 | struct rpc_cred *cred) | |
0f3e66c6 | 6369 | { |
848f5bda TM |
6370 | struct rpc_message msg = { |
6371 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6372 | .rpc_argp = session, | |
6373 | .rpc_cred = cred, | |
6374 | }; | |
0f3e66c6 | 6375 | int status = 0; |
0f3e66c6 AA |
6376 | |
6377 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6378 | ||
6379 | /* session is still being setup */ | |
6380 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6381 | return status; | |
6382 | ||
1bd714f2 | 6383 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6384 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
6385 | |
6386 | if (status) | |
08106ac7 | 6387 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6388 | "Session has been destroyed regardless...\n", status); |
6389 | ||
6390 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6391 | return status; | |
6392 | } | |
6393 | ||
fc01cea9 AA |
6394 | /* |
6395 | * Renew the cl_session lease. | |
6396 | */ | |
d5f8d3fe TM |
6397 | struct nfs4_sequence_data { |
6398 | struct nfs_client *clp; | |
6399 | struct nfs4_sequence_args args; | |
6400 | struct nfs4_sequence_res res; | |
6401 | }; | |
6402 | ||
dc96aef9 AB |
6403 | static void nfs41_sequence_release(void *data) |
6404 | { | |
d5f8d3fe TM |
6405 | struct nfs4_sequence_data *calldata = data; |
6406 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6407 | |
7135840f AB |
6408 | if (atomic_read(&clp->cl_count) > 1) |
6409 | nfs4_schedule_state_renewal(clp); | |
6410 | nfs_put_client(clp); | |
d5f8d3fe | 6411 | kfree(calldata); |
dc96aef9 AB |
6412 | } |
6413 | ||
aa5190d0 TM |
6414 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6415 | { | |
6416 | switch(task->tk_status) { | |
6417 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6418 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6419 | return -EAGAIN; | |
6420 | default: | |
0400a6b0 | 6421 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6422 | } |
6423 | return 0; | |
6424 | } | |
6425 | ||
dc96aef9 | 6426 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6427 | { |
d5f8d3fe TM |
6428 | struct nfs4_sequence_data *calldata = data; |
6429 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6430 | |
14516c3a TM |
6431 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6432 | return; | |
fc01cea9 | 6433 | |
c6d01c6f | 6434 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
6435 | if (task->tk_status < 0) { |
6436 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6437 | if (atomic_read(&clp->cl_count) == 1) |
6438 | goto out; | |
fc01cea9 | 6439 | |
aa5190d0 TM |
6440 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6441 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6442 | return; |
6443 | } | |
6444 | } | |
fc01cea9 | 6445 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6446 | out: |
fc01cea9 AA |
6447 | dprintk("<-- %s\n", __func__); |
6448 | } | |
6449 | ||
6450 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6451 | { | |
d5f8d3fe TM |
6452 | struct nfs4_sequence_data *calldata = data; |
6453 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6454 | struct nfs4_sequence_args *args; |
6455 | struct nfs4_sequence_res *res; | |
6456 | ||
fc01cea9 AA |
6457 | args = task->tk_msg.rpc_argp; |
6458 | res = task->tk_msg.rpc_resp; | |
6459 | ||
d9afbd1b | 6460 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6461 | } |
6462 | ||
6463 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6464 | .rpc_call_done = nfs41_sequence_call_done, | |
6465 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6466 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6467 | }; |
6468 | ||
8fe72bac TM |
6469 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6470 | struct rpc_cred *cred, | |
6471 | bool is_privileged) | |
fc01cea9 | 6472 | { |
d5f8d3fe | 6473 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6474 | struct rpc_message msg = { |
6475 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6476 | .rpc_cred = cred, | |
6477 | }; | |
71ac6da9 TM |
6478 | struct rpc_task_setup task_setup_data = { |
6479 | .rpc_client = clp->cl_rpcclient, | |
6480 | .rpc_message = &msg, | |
8fe72bac | 6481 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6482 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6483 | }; |
fc01cea9 | 6484 | |
7135840f | 6485 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6486 | return ERR_PTR(-EIO); |
dfb4f309 | 6487 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6488 | if (calldata == NULL) { |
7135840f | 6489 | nfs_put_client(clp); |
71ac6da9 | 6490 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6491 | } |
9d12b216 | 6492 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6493 | if (is_privileged) |
6494 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6495 | msg.rpc_argp = &calldata->args; |
6496 | msg.rpc_resp = &calldata->res; | |
6497 | calldata->clp = clp; | |
71ac6da9 | 6498 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6499 | |
71ac6da9 TM |
6500 | return rpc_run_task(&task_setup_data); |
6501 | } | |
6502 | ||
2f60ea6b | 6503 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6504 | { |
6505 | struct rpc_task *task; | |
6506 | int ret = 0; | |
6507 | ||
2f60ea6b TM |
6508 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6509 | return 0; | |
8fe72bac | 6510 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6511 | if (IS_ERR(task)) |
6512 | ret = PTR_ERR(task); | |
6513 | else | |
bf294b41 | 6514 | rpc_put_task_async(task); |
71ac6da9 TM |
6515 | dprintk("<-- %s status=%d\n", __func__, ret); |
6516 | return ret; | |
6517 | } | |
6518 | ||
6519 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6520 | { | |
6521 | struct rpc_task *task; | |
6522 | int ret; | |
6523 | ||
8fe72bac | 6524 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6525 | if (IS_ERR(task)) { |
6526 | ret = PTR_ERR(task); | |
6527 | goto out; | |
6528 | } | |
6529 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6530 | if (!ret) { |
6531 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6532 | ||
6533 | if (task->tk_status == 0) | |
6534 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6535 | ret = task->tk_status; |
b4410c2f | 6536 | } |
71ac6da9 TM |
6537 | rpc_put_task(task); |
6538 | out: | |
6539 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6540 | return ret; | |
fc01cea9 AA |
6541 | } |
6542 | ||
fce5c838 RL |
6543 | struct nfs4_reclaim_complete_data { |
6544 | struct nfs_client *clp; | |
6545 | struct nfs41_reclaim_complete_args arg; | |
6546 | struct nfs41_reclaim_complete_res res; | |
6547 | }; | |
6548 | ||
6549 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6550 | { | |
6551 | struct nfs4_reclaim_complete_data *calldata = data; | |
6552 | ||
d9afbd1b TM |
6553 | nfs41_setup_sequence(calldata->clp->cl_session, |
6554 | &calldata->arg.seq_args, | |
6555 | &calldata->res.seq_res, | |
6556 | task); | |
fce5c838 RL |
6557 | } |
6558 | ||
aa5190d0 TM |
6559 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6560 | { | |
6561 | switch(task->tk_status) { | |
6562 | case 0: | |
6563 | case -NFS4ERR_COMPLETE_ALREADY: | |
6564 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6565 | break; | |
6566 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6567 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6568 | /* fall through */ |
6569 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6570 | return -EAGAIN; |
6571 | default: | |
0400a6b0 | 6572 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6573 | } |
6574 | return 0; | |
6575 | } | |
6576 | ||
fce5c838 RL |
6577 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6578 | { | |
6579 | struct nfs4_reclaim_complete_data *calldata = data; | |
6580 | struct nfs_client *clp = calldata->clp; | |
6581 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6582 | ||
6583 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6584 | if (!nfs41_sequence_done(task, res)) |
6585 | return; | |
fce5c838 | 6586 | |
c6d01c6f | 6587 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
6588 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6589 | rpc_restart_call_prepare(task); | |
6590 | return; | |
6591 | } | |
fce5c838 RL |
6592 | dprintk("<-- %s\n", __func__); |
6593 | } | |
6594 | ||
6595 | static void nfs4_free_reclaim_complete_data(void *data) | |
6596 | { | |
6597 | struct nfs4_reclaim_complete_data *calldata = data; | |
6598 | ||
6599 | kfree(calldata); | |
6600 | } | |
6601 | ||
6602 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6603 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6604 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6605 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6606 | }; | |
6607 | ||
6608 | /* | |
6609 | * Issue a global reclaim complete. | |
6610 | */ | |
965e9c23 TM |
6611 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6612 | struct rpc_cred *cred) | |
fce5c838 RL |
6613 | { |
6614 | struct nfs4_reclaim_complete_data *calldata; | |
6615 | struct rpc_task *task; | |
6616 | struct rpc_message msg = { | |
6617 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6618 | .rpc_cred = cred, |
fce5c838 RL |
6619 | }; |
6620 | struct rpc_task_setup task_setup_data = { | |
6621 | .rpc_client = clp->cl_rpcclient, | |
6622 | .rpc_message = &msg, | |
6623 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6624 | .flags = RPC_TASK_ASYNC, | |
6625 | }; | |
6626 | int status = -ENOMEM; | |
6627 | ||
6628 | dprintk("--> %s\n", __func__); | |
8535b2be | 6629 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6630 | if (calldata == NULL) |
6631 | goto out; | |
6632 | calldata->clp = clp; | |
6633 | calldata->arg.one_fs = 0; | |
fce5c838 | 6634 | |
9d12b216 | 6635 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6636 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6637 | msg.rpc_argp = &calldata->arg; |
6638 | msg.rpc_resp = &calldata->res; | |
6639 | task_setup_data.callback_data = calldata; | |
6640 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6641 | if (IS_ERR(task)) { |
fce5c838 | 6642 | status = PTR_ERR(task); |
acf82b85 DC |
6643 | goto out; |
6644 | } | |
c34c32ea AA |
6645 | status = nfs4_wait_for_completion_rpc_task(task); |
6646 | if (status == 0) | |
6647 | status = task->tk_status; | |
fce5c838 | 6648 | rpc_put_task(task); |
acf82b85 | 6649 | return 0; |
fce5c838 RL |
6650 | out: |
6651 | dprintk("<-- %s status=%d\n", __func__, status); | |
6652 | return status; | |
6653 | } | |
b1f69b75 AA |
6654 | |
6655 | static void | |
6656 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6657 | { | |
6658 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6659 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6660 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6661 | |
6662 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6663 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6664 | * right now covering the LAYOUTGET we are about to send. | |
6665 | * However, that is not so catastrophic, and there seems | |
6666 | * to be no way to prevent it completely. | |
6667 | */ | |
6ba7db34 | 6668 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6669 | &lgp->res.seq_res, task)) |
b1f69b75 | 6670 | return; |
cf7d63f1 FI |
6671 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6672 | NFS_I(lgp->args.inode)->layout, | |
6673 | lgp->args.ctx->state)) { | |
6674 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6675 | } |
b1f69b75 AA |
6676 | } |
6677 | ||
6678 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6679 | { | |
6680 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6681 | struct inode *inode = lgp->args.inode; |
6682 | struct nfs_server *server = NFS_SERVER(inode); | |
6683 | struct pnfs_layout_hdr *lo; | |
6684 | struct nfs4_state *state = NULL; | |
30005121 | 6685 | unsigned long timeo, giveup; |
b1f69b75 AA |
6686 | |
6687 | dprintk("--> %s\n", __func__); | |
6688 | ||
6ba7db34 | 6689 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6690 | goto out; |
b1f69b75 AA |
6691 | |
6692 | switch (task->tk_status) { | |
6693 | case 0: | |
ee314c2a | 6694 | goto out; |
b1f69b75 AA |
6695 | case -NFS4ERR_LAYOUTTRYLATER: |
6696 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6697 | timeo = rpc_get_timeout(task->tk_client); |
6698 | giveup = lgp->args.timestamp + timeo; | |
6699 | if (time_after(giveup, jiffies)) | |
6700 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6701 | break; |
6702 | case -NFS4ERR_EXPIRED: | |
6703 | case -NFS4ERR_BAD_STATEID: | |
6704 | spin_lock(&inode->i_lock); | |
6705 | lo = NFS_I(inode)->layout; | |
6706 | if (!lo || list_empty(&lo->plh_segs)) { | |
6707 | spin_unlock(&inode->i_lock); | |
6708 | /* If the open stateid was bad, then recover it. */ | |
6709 | state = lgp->args.ctx->state; | |
6710 | } else { | |
6711 | LIST_HEAD(head); | |
6712 | ||
6713 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6714 | spin_unlock(&inode->i_lock); | |
6715 | /* Mark the bad layout state as invalid, then | |
6716 | * retry using the open stateid. */ | |
6717 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6718 | } |
6719 | } | |
ee314c2a TM |
6720 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6721 | rpc_restart_call_prepare(task); | |
6722 | out: | |
b1f69b75 AA |
6723 | dprintk("<-- %s\n", __func__); |
6724 | } | |
6725 | ||
8554116e IK |
6726 | static size_t max_response_pages(struct nfs_server *server) |
6727 | { | |
6728 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6729 | return nfs_page_array_len(0, max_resp_sz); | |
6730 | } | |
6731 | ||
6732 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6733 | { | |
6734 | int i; | |
6735 | ||
6736 | if (!pages) | |
6737 | return; | |
6738 | ||
6739 | for (i = 0; i < size; i++) { | |
6740 | if (!pages[i]) | |
6741 | break; | |
6742 | __free_page(pages[i]); | |
6743 | } | |
6744 | kfree(pages); | |
6745 | } | |
6746 | ||
6747 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6748 | { | |
6749 | struct page **pages; | |
6750 | int i; | |
6751 | ||
6752 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6753 | if (!pages) { | |
6754 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6755 | return NULL; | |
6756 | } | |
6757 | ||
6758 | for (i = 0; i < size; i++) { | |
6759 | pages[i] = alloc_page(gfp_flags); | |
6760 | if (!pages[i]) { | |
6761 | dprintk("%s: failed to allocate page\n", __func__); | |
6762 | nfs4_free_pages(pages, size); | |
6763 | return NULL; | |
6764 | } | |
6765 | } | |
6766 | ||
6767 | return pages; | |
6768 | } | |
6769 | ||
b1f69b75 AA |
6770 | static void nfs4_layoutget_release(void *calldata) |
6771 | { | |
6772 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6773 | struct inode *inode = lgp->args.inode; |
6774 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6775 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6776 | |
6777 | dprintk("--> %s\n", __func__); | |
8554116e | 6778 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6779 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6780 | put_nfs_open_context(lgp->args.ctx); |
6781 | kfree(calldata); | |
6782 | dprintk("<-- %s\n", __func__); | |
6783 | } | |
6784 | ||
6785 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6786 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6787 | .rpc_call_done = nfs4_layoutget_done, | |
6788 | .rpc_release = nfs4_layoutget_release, | |
6789 | }; | |
6790 | ||
a0b0a6e3 TM |
6791 | struct pnfs_layout_segment * |
6792 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6793 | { |
a47970ff WAA |
6794 | struct inode *inode = lgp->args.inode; |
6795 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6796 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6797 | struct rpc_task *task; |
6798 | struct rpc_message msg = { | |
6799 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6800 | .rpc_argp = &lgp->args, | |
6801 | .rpc_resp = &lgp->res, | |
6ab59344 | 6802 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
6803 | }; |
6804 | struct rpc_task_setup task_setup_data = { | |
6805 | .rpc_client = server->client, | |
6806 | .rpc_message = &msg, | |
6807 | .callback_ops = &nfs4_layoutget_call_ops, | |
6808 | .callback_data = lgp, | |
6809 | .flags = RPC_TASK_ASYNC, | |
6810 | }; | |
a0b0a6e3 | 6811 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6812 | int status = 0; |
6813 | ||
6814 | dprintk("--> %s\n", __func__); | |
6815 | ||
8554116e IK |
6816 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6817 | if (!lgp->args.layout.pages) { | |
6818 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6819 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6820 | } |
6821 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6822 | lgp->args.timestamp = jiffies; |
8554116e | 6823 | |
35124a09 | 6824 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6825 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6826 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6827 | |
6828 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6829 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6830 | ||
b1f69b75 AA |
6831 | task = rpc_run_task(&task_setup_data); |
6832 | if (IS_ERR(task)) | |
a0b0a6e3 | 6833 | return ERR_CAST(task); |
b1f69b75 | 6834 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6835 | if (status == 0) |
6836 | status = task->tk_status; | |
085b7a45 WAA |
6837 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6838 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6839 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6840 | rpc_put_task(task); |
6841 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6842 | if (status) |
6843 | return ERR_PTR(status); | |
6844 | return lseg; | |
b1f69b75 AA |
6845 | } |
6846 | ||
cbe82603 BH |
6847 | static void |
6848 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6849 | { | |
6850 | struct nfs4_layoutreturn *lrp = calldata; | |
6851 | ||
6852 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6853 | nfs41_setup_sequence(lrp->clp->cl_session, |
6854 | &lrp->args.seq_args, | |
6855 | &lrp->res.seq_res, | |
6856 | task); | |
cbe82603 BH |
6857 | } |
6858 | ||
6859 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6860 | { | |
6861 | struct nfs4_layoutreturn *lrp = calldata; | |
6862 | struct nfs_server *server; | |
6863 | ||
6864 | dprintk("--> %s\n", __func__); | |
6865 | ||
6ba7db34 | 6866 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6867 | return; |
6868 | ||
6869 | server = NFS_SERVER(lrp->args.inode); | |
6870 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6871 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6872 | return; |
6873 | } | |
cbe82603 BH |
6874 | dprintk("<-- %s\n", __func__); |
6875 | } | |
6876 | ||
6877 | static void nfs4_layoutreturn_release(void *calldata) | |
6878 | { | |
6879 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6880 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6881 | |
6882 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6883 | spin_lock(&lo->plh_inode->i_lock); |
6884 | if (lrp->res.lrs_present) | |
6885 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6886 | lo->plh_block_lgets--; | |
6887 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6888 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6889 | kfree(calldata); |
6890 | dprintk("<-- %s\n", __func__); | |
6891 | } | |
6892 | ||
6893 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6894 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6895 | .rpc_call_done = nfs4_layoutreturn_done, | |
6896 | .rpc_release = nfs4_layoutreturn_release, | |
6897 | }; | |
6898 | ||
6899 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6900 | { | |
6901 | struct rpc_task *task; | |
6902 | struct rpc_message msg = { | |
6903 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6904 | .rpc_argp = &lrp->args, | |
6905 | .rpc_resp = &lrp->res, | |
9556000d | 6906 | .rpc_cred = lrp->cred, |
cbe82603 BH |
6907 | }; |
6908 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 6909 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
6910 | .rpc_message = &msg, |
6911 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6912 | .callback_data = lrp, | |
6913 | }; | |
6914 | int status; | |
6915 | ||
6916 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6917 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6918 | task = rpc_run_task(&task_setup_data); |
6919 | if (IS_ERR(task)) | |
6920 | return PTR_ERR(task); | |
6921 | status = task->tk_status; | |
6922 | dprintk("<-- %s status=%d\n", __func__, status); | |
6923 | rpc_put_task(task); | |
6924 | return status; | |
6925 | } | |
6926 | ||
7f11d8d3 AA |
6927 | /* |
6928 | * Retrieve the list of Data Server devices from the MDS. | |
6929 | */ | |
6930 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6931 | const struct nfs_fh *fh, | |
6932 | struct pnfs_devicelist *devlist) | |
6933 | { | |
6934 | struct nfs4_getdevicelist_args args = { | |
6935 | .fh = fh, | |
6936 | .layoutclass = server->pnfs_curr_ld->id, | |
6937 | }; | |
6938 | struct nfs4_getdevicelist_res res = { | |
6939 | .devlist = devlist, | |
6940 | }; | |
6941 | struct rpc_message msg = { | |
6942 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6943 | .rpc_argp = &args, | |
6944 | .rpc_resp = &res, | |
6945 | }; | |
6946 | int status; | |
6947 | ||
6948 | dprintk("--> %s\n", __func__); | |
6949 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6950 | &res.seq_res, 0); | |
6951 | dprintk("<-- %s status=%d\n", __func__, status); | |
6952 | return status; | |
6953 | } | |
6954 | ||
6955 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6956 | const struct nfs_fh *fh, | |
6957 | struct pnfs_devicelist *devlist) | |
6958 | { | |
6959 | struct nfs4_exception exception = { }; | |
6960 | int err; | |
6961 | ||
6962 | do { | |
6963 | err = nfs4_handle_exception(server, | |
6964 | _nfs4_getdevicelist(server, fh, devlist), | |
6965 | &exception); | |
6966 | } while (exception.retry); | |
6967 | ||
6968 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6969 | err, devlist->num_devs); | |
6970 | ||
6971 | return err; | |
6972 | } | |
6973 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6974 | ||
b1f69b75 | 6975 | static int |
cd5875fe TM |
6976 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
6977 | struct pnfs_device *pdev, | |
6978 | struct rpc_cred *cred) | |
b1f69b75 AA |
6979 | { |
6980 | struct nfs4_getdeviceinfo_args args = { | |
6981 | .pdev = pdev, | |
6982 | }; | |
6983 | struct nfs4_getdeviceinfo_res res = { | |
6984 | .pdev = pdev, | |
6985 | }; | |
6986 | struct rpc_message msg = { | |
6987 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6988 | .rpc_argp = &args, | |
6989 | .rpc_resp = &res, | |
cd5875fe | 6990 | .rpc_cred = cred, |
b1f69b75 AA |
6991 | }; |
6992 | int status; | |
6993 | ||
6994 | dprintk("--> %s\n", __func__); | |
7c513058 | 6995 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6996 | dprintk("<-- %s status=%d\n", __func__, status); |
6997 | ||
6998 | return status; | |
6999 | } | |
7000 | ||
cd5875fe TM |
7001 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7002 | struct pnfs_device *pdev, | |
7003 | struct rpc_cred *cred) | |
b1f69b75 AA |
7004 | { |
7005 | struct nfs4_exception exception = { }; | |
7006 | int err; | |
7007 | ||
7008 | do { | |
7009 | err = nfs4_handle_exception(server, | |
cd5875fe | 7010 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7011 | &exception); |
7012 | } while (exception.retry); | |
7013 | return err; | |
7014 | } | |
7015 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7016 | ||
863a3c6c AA |
7017 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7018 | { | |
7019 | struct nfs4_layoutcommit_data *data = calldata; | |
7020 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7021 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7022 | |
d9afbd1b TM |
7023 | nfs41_setup_sequence(session, |
7024 | &data->args.seq_args, | |
7025 | &data->res.seq_res, | |
7026 | task); | |
863a3c6c AA |
7027 | } |
7028 | ||
7029 | static void | |
7030 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7031 | { | |
7032 | struct nfs4_layoutcommit_data *data = calldata; | |
7033 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7034 | ||
6ba7db34 | 7035 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7036 | return; |
7037 | ||
7038 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7039 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7040 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7041 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7042 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7043 | task->tk_status = 0; |
e59d27e0 TM |
7044 | break; |
7045 | case 0: | |
863a3c6c AA |
7046 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7047 | data->res.fattr); | |
e59d27e0 TM |
7048 | break; |
7049 | default: | |
7050 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7051 | rpc_restart_call_prepare(task); | |
7052 | return; | |
7053 | } | |
7054 | } | |
863a3c6c AA |
7055 | } |
7056 | ||
7057 | static void nfs4_layoutcommit_release(void *calldata) | |
7058 | { | |
7059 | struct nfs4_layoutcommit_data *data = calldata; | |
7060 | ||
db29c089 | 7061 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
7062 | put_rpccred(data->cred); |
7063 | kfree(data); | |
7064 | } | |
7065 | ||
7066 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7067 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7068 | .rpc_call_done = nfs4_layoutcommit_done, | |
7069 | .rpc_release = nfs4_layoutcommit_release, | |
7070 | }; | |
7071 | ||
7072 | int | |
ef311537 | 7073 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7074 | { |
7075 | struct rpc_message msg = { | |
7076 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7077 | .rpc_argp = &data->args, | |
7078 | .rpc_resp = &data->res, | |
7079 | .rpc_cred = data->cred, | |
7080 | }; | |
7081 | struct rpc_task_setup task_setup_data = { | |
7082 | .task = &data->task, | |
7083 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7084 | .rpc_message = &msg, | |
7085 | .callback_ops = &nfs4_layoutcommit_ops, | |
7086 | .callback_data = data, | |
7087 | .flags = RPC_TASK_ASYNC, | |
7088 | }; | |
7089 | struct rpc_task *task; | |
7090 | int status = 0; | |
7091 | ||
7092 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7093 | "lbw: %llu inode %lu\n", | |
7094 | data->task.tk_pid, sync, | |
7095 | data->args.lastbytewritten, | |
7096 | data->args.inode->i_ino); | |
7097 | ||
9d12b216 | 7098 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7099 | task = rpc_run_task(&task_setup_data); |
7100 | if (IS_ERR(task)) | |
7101 | return PTR_ERR(task); | |
ef311537 | 7102 | if (sync == false) |
863a3c6c AA |
7103 | goto out; |
7104 | status = nfs4_wait_for_completion_rpc_task(task); | |
7105 | if (status != 0) | |
7106 | goto out; | |
7107 | status = task->tk_status; | |
7108 | out: | |
7109 | dprintk("%s: status %d\n", __func__, status); | |
7110 | rpc_put_task(task); | |
7111 | return status; | |
7112 | } | |
fca78d6d | 7113 | |
97431204 AA |
7114 | /** |
7115 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7116 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7117 | */ | |
fca78d6d BS |
7118 | static int |
7119 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7120 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7121 | { | |
7122 | struct nfs41_secinfo_no_name_args args = { | |
7123 | .style = SECINFO_STYLE_CURRENT_FH, | |
7124 | }; | |
7125 | struct nfs4_secinfo_res res = { | |
7126 | .flavors = flavors, | |
7127 | }; | |
7128 | struct rpc_message msg = { | |
7129 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7130 | .rpc_argp = &args, | |
7131 | .rpc_resp = &res, | |
7132 | }; | |
97431204 AA |
7133 | return nfs4_call_sync(server->nfs_client->cl_rpcclient, server, &msg, |
7134 | &args.seq_args, &res.seq_res, 0); | |
fca78d6d BS |
7135 | } |
7136 | ||
7137 | static int | |
7138 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7139 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7140 | { | |
7141 | struct nfs4_exception exception = { }; | |
7142 | int err; | |
7143 | do { | |
7144 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7145 | switch (err) { | |
7146 | case 0: | |
7147 | case -NFS4ERR_WRONGSEC: | |
7148 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 7149 | goto out; |
fca78d6d BS |
7150 | default: |
7151 | err = nfs4_handle_exception(server, err, &exception); | |
7152 | } | |
7153 | } while (exception.retry); | |
05e9cfb4 | 7154 | out: |
fca78d6d BS |
7155 | return err; |
7156 | } | |
7157 | ||
7158 | static int | |
7159 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7160 | struct nfs_fsinfo *info) | |
7161 | { | |
7162 | int err; | |
7163 | struct page *page; | |
7164 | rpc_authflavor_t flavor; | |
7165 | struct nfs4_secinfo_flavors *flavors; | |
7166 | ||
7167 | page = alloc_page(GFP_KERNEL); | |
7168 | if (!page) { | |
7169 | err = -ENOMEM; | |
7170 | goto out; | |
7171 | } | |
7172 | ||
7173 | flavors = page_address(page); | |
7174 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7175 | ||
7176 | /* | |
7177 | * Fall back on "guess and check" method if | |
7178 | * the server doesn't support SECINFO_NO_NAME | |
7179 | */ | |
7180 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
7181 | err = nfs4_find_root_sec(server, fhandle, info); | |
7182 | goto out_freepage; | |
7183 | } | |
7184 | if (err) | |
7185 | goto out_freepage; | |
7186 | ||
7187 | flavor = nfs_find_best_sec(flavors); | |
7188 | if (err == 0) | |
7189 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
7190 | ||
7191 | out_freepage: | |
7192 | put_page(page); | |
7193 | if (err == -EACCES) | |
7194 | return -EPERM; | |
7195 | out: | |
7196 | return err; | |
7197 | } | |
1cab0652 | 7198 | |
ab7cb0df TM |
7199 | static int _nfs41_test_stateid(struct nfs_server *server, |
7200 | nfs4_stateid *stateid, | |
7201 | struct rpc_cred *cred) | |
7d974794 BS |
7202 | { |
7203 | int status; | |
7204 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7205 | .stateid = stateid, |
7d974794 BS |
7206 | }; |
7207 | struct nfs41_test_stateid_res res; | |
7208 | struct rpc_message msg = { | |
7209 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7210 | .rpc_argp = &args, | |
7211 | .rpc_resp = &res, | |
ab7cb0df | 7212 | .rpc_cred = cred, |
7d974794 | 7213 | }; |
1cab0652 | 7214 | |
38527b15 | 7215 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 7216 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
7217 | nfs4_set_sequence_privileged(&args.seq_args); |
7218 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
7219 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
7220 | if (status != NFS_OK) { |
7221 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7222 | return status; |
38527b15 CL |
7223 | } |
7224 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7225 | return -res.status; |
7d974794 BS |
7226 | } |
7227 | ||
38527b15 CL |
7228 | /** |
7229 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7230 | * | |
7231 | * @server: server / transport on which to perform the operation | |
7232 | * @stateid: state ID to test | |
ab7cb0df | 7233 | * @cred: credential |
38527b15 CL |
7234 | * |
7235 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7236 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7237 | * failed or the state ID is not currently valid. | |
7238 | */ | |
ab7cb0df TM |
7239 | static int nfs41_test_stateid(struct nfs_server *server, |
7240 | nfs4_stateid *stateid, | |
7241 | struct rpc_cred *cred) | |
7d974794 BS |
7242 | { |
7243 | struct nfs4_exception exception = { }; | |
7244 | int err; | |
7245 | do { | |
ab7cb0df | 7246 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
7247 | if (err != -NFS4ERR_DELAY) |
7248 | break; | |
7249 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7250 | } while (exception.retry); |
7251 | return err; | |
7252 | } | |
9aeda35f | 7253 | |
7c1d5fae TM |
7254 | struct nfs_free_stateid_data { |
7255 | struct nfs_server *server; | |
7256 | struct nfs41_free_stateid_args args; | |
9aeda35f | 7257 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
7258 | }; |
7259 | ||
7260 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
7261 | { | |
7262 | struct nfs_free_stateid_data *data = calldata; | |
7263 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
7264 | &data->args.seq_args, | |
7265 | &data->res.seq_res, | |
7266 | task); | |
7267 | } | |
7268 | ||
7269 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
7270 | { | |
7271 | struct nfs_free_stateid_data *data = calldata; | |
7272 | ||
7273 | nfs41_sequence_done(task, &data->res.seq_res); | |
7274 | ||
7275 | switch (task->tk_status) { | |
7276 | case -NFS4ERR_DELAY: | |
7277 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
7278 | rpc_restart_call_prepare(task); | |
7279 | } | |
7280 | } | |
7281 | ||
7282 | static void nfs41_free_stateid_release(void *calldata) | |
7283 | { | |
7284 | kfree(calldata); | |
7285 | } | |
7286 | ||
17f26b12 | 7287 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
7288 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
7289 | .rpc_call_done = nfs41_free_stateid_done, | |
7290 | .rpc_release = nfs41_free_stateid_release, | |
7291 | }; | |
7292 | ||
7293 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
7294 | nfs4_stateid *stateid, | |
ab7cb0df | 7295 | struct rpc_cred *cred, |
7c1d5fae TM |
7296 | bool privileged) |
7297 | { | |
9aeda35f BS |
7298 | struct rpc_message msg = { |
7299 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 7300 | .rpc_cred = cred, |
9aeda35f | 7301 | }; |
7c1d5fae TM |
7302 | struct rpc_task_setup task_setup = { |
7303 | .rpc_client = server->client, | |
7304 | .rpc_message = &msg, | |
7305 | .callback_ops = &nfs41_free_stateid_ops, | |
7306 | .flags = RPC_TASK_ASYNC, | |
7307 | }; | |
7308 | struct nfs_free_stateid_data *data; | |
9aeda35f | 7309 | |
38527b15 | 7310 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
7311 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7312 | if (!data) | |
7313 | return ERR_PTR(-ENOMEM); | |
7314 | data->server = server; | |
7315 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
7316 | ||
7317 | task_setup.callback_data = data; | |
7318 | ||
7319 | msg.rpc_argp = &data->args; | |
7320 | msg.rpc_resp = &data->res; | |
7321 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
7322 | if (privileged) | |
7323 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
7324 | ||
7325 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
7326 | } |
7327 | ||
38527b15 CL |
7328 | /** |
7329 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7330 | * | |
7331 | * @server: server / transport on which to perform the operation | |
7332 | * @stateid: state ID to release | |
ab7cb0df | 7333 | * @cred: credential |
38527b15 CL |
7334 | * |
7335 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7336 | * negative NFS4ERR value is returned. | |
7337 | */ | |
ab7cb0df TM |
7338 | static int nfs41_free_stateid(struct nfs_server *server, |
7339 | nfs4_stateid *stateid, | |
7340 | struct rpc_cred *cred) | |
9aeda35f | 7341 | { |
7c1d5fae TM |
7342 | struct rpc_task *task; |
7343 | int ret; | |
7344 | ||
ab7cb0df | 7345 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
7346 | if (IS_ERR(task)) |
7347 | return PTR_ERR(task); | |
7348 | ret = rpc_wait_for_completion_task(task); | |
7349 | if (!ret) | |
7350 | ret = task->tk_status; | |
7351 | rpc_put_task(task); | |
7352 | return ret; | |
9aeda35f | 7353 | } |
36281caa | 7354 | |
c8b2d0bf TM |
7355 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
7356 | { | |
7357 | struct rpc_task *task; | |
ab7cb0df | 7358 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 7359 | |
ab7cb0df | 7360 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
7361 | nfs4_free_lock_state(server, lsp); |
7362 | if (IS_ERR(task)) | |
7363 | return PTR_ERR(task); | |
7364 | rpc_put_task(task); | |
7365 | return 0; | |
7366 | } | |
7367 | ||
36281caa TM |
7368 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
7369 | const nfs4_stateid *s2) | |
7370 | { | |
2d2f24ad | 7371 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7372 | return false; |
7373 | ||
2d2f24ad | 7374 | if (s1->seqid == s2->seqid) |
36281caa | 7375 | return true; |
2d2f24ad | 7376 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7377 | return true; |
7378 | ||
7379 | return false; | |
7380 | } | |
7381 | ||
557134a3 AA |
7382 | #endif /* CONFIG_NFS_V4_1 */ |
7383 | ||
36281caa TM |
7384 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7385 | const nfs4_stateid *s2) | |
7386 | { | |
f597c537 | 7387 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7388 | } |
7389 | ||
7390 | ||
17280175 | 7391 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7392 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7393 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7394 | .recover_open = nfs4_open_reclaim, |
7395 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7396 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 7397 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7398 | }; |
7399 | ||
591d71cb | 7400 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7401 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7402 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7403 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7404 | .recover_open = nfs4_open_reclaim, | |
7405 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7406 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 7407 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7408 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7409 | }; |
7410 | #endif /* CONFIG_NFS_V4_1 */ | |
7411 | ||
17280175 | 7412 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7413 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7414 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7415 | .recover_open = nfs4_open_expired, | |
7416 | .recover_lock = nfs4_lock_expired, | |
7417 | .establish_clid = nfs4_init_clientid, | |
7418 | }; | |
7419 | ||
7420 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7421 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7422 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7423 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7424 | .recover_open = nfs41_open_expired, |
7425 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7426 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 7427 | }; |
591d71cb | 7428 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7429 | |
17280175 | 7430 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7431 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7432 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7433 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7434 | }; |
7435 | ||
7436 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7437 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7438 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7439 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7440 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7441 | }; |
7442 | #endif | |
7443 | ||
97dc1359 TM |
7444 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7445 | .minor_version = 0, | |
39c6daae TM |
7446 | .init_caps = NFS_CAP_READDIRPLUS |
7447 | | NFS_CAP_ATOMIC_OPEN | |
7448 | | NFS_CAP_CHANGE_ATTR | |
7449 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 7450 | .call_sync = _nfs4_call_sync, |
36281caa | 7451 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7452 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7453 | .free_lock_state = nfs4_release_lockowner, |
c48f4f35 TM |
7454 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7455 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7456 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7457 | }; |
7458 | ||
7459 | #if defined(CONFIG_NFS_V4_1) | |
7460 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7461 | .minor_version = 1, | |
39c6daae TM |
7462 | .init_caps = NFS_CAP_READDIRPLUS |
7463 | | NFS_CAP_ATOMIC_OPEN | |
7464 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7465 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7466 | | NFS_CAP_STATEID_NFSV41 |
7467 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 7468 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 7469 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7470 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7471 | .free_lock_state = nfs41_free_lock_state, |
c48f4f35 TM |
7472 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7473 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7474 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7475 | }; |
7476 | #endif | |
7477 | ||
42c2c424 SD |
7478 | #if defined(CONFIG_NFS_V4_2) |
7479 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7480 | .minor_version = 2, | |
7017310a BS |
7481 | .init_caps = NFS_CAP_READDIRPLUS |
7482 | | NFS_CAP_ATOMIC_OPEN | |
7483 | | NFS_CAP_CHANGE_ATTR | |
7484 | | NFS_CAP_POSIX_LOCK | |
7485 | | NFS_CAP_STATEID_NFSV41 | |
7486 | | NFS_CAP_ATOMIC_OPEN_V1, | |
42c2c424 SD |
7487 | .call_sync = nfs4_call_sync_sequence, |
7488 | .match_stateid = nfs41_match_stateid, | |
7489 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 7490 | .free_lock_state = nfs41_free_lock_state, |
42c2c424 SD |
7491 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7492 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7493 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7494 | }; | |
7495 | #endif | |
7496 | ||
97dc1359 TM |
7497 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7498 | [0] = &nfs_v4_0_minor_ops, | |
7499 | #if defined(CONFIG_NFS_V4_1) | |
7500 | [1] = &nfs_v4_1_minor_ops, | |
7501 | #endif | |
42c2c424 SD |
7502 | #if defined(CONFIG_NFS_V4_2) |
7503 | [2] = &nfs_v4_2_minor_ops, | |
7504 | #endif | |
97dc1359 TM |
7505 | }; |
7506 | ||
17f26b12 | 7507 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
7508 | .create = nfs_create, |
7509 | .lookup = nfs_lookup, | |
7510 | .atomic_open = nfs_atomic_open, | |
7511 | .link = nfs_link, | |
7512 | .unlink = nfs_unlink, | |
7513 | .symlink = nfs_symlink, | |
7514 | .mkdir = nfs_mkdir, | |
7515 | .rmdir = nfs_rmdir, | |
7516 | .mknod = nfs_mknod, | |
7517 | .rename = nfs_rename, | |
7518 | .permission = nfs_permission, | |
7519 | .getattr = nfs_getattr, | |
7520 | .setattr = nfs_setattr, | |
7521 | .getxattr = generic_getxattr, | |
7522 | .setxattr = generic_setxattr, | |
7523 | .listxattr = generic_listxattr, | |
7524 | .removexattr = generic_removexattr, | |
7525 | }; | |
7526 | ||
92e1d5be | 7527 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7528 | .permission = nfs_permission, |
7529 | .getattr = nfs_getattr, | |
7530 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7531 | .getxattr = generic_getxattr, |
7532 | .setxattr = generic_setxattr, | |
7533 | .listxattr = generic_listxattr, | |
7534 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7535 | }; |
7536 | ||
509de811 | 7537 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7538 | .version = 4, /* protocol version */ |
7539 | .dentry_ops = &nfs4_dentry_operations, | |
7540 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7541 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7542 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7543 | .getroot = nfs4_proc_get_root, |
281cad46 | 7544 | .submount = nfs4_submount, |
ff9099f2 | 7545 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7546 | .getattr = nfs4_proc_getattr, |
7547 | .setattr = nfs4_proc_setattr, | |
7548 | .lookup = nfs4_proc_lookup, | |
7549 | .access = nfs4_proc_access, | |
7550 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7551 | .create = nfs4_proc_create, |
7552 | .remove = nfs4_proc_remove, | |
7553 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7554 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7555 | .unlink_done = nfs4_proc_unlink_done, |
7556 | .rename = nfs4_proc_rename, | |
d3d4152a | 7557 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7558 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7559 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7560 | .link = nfs4_proc_link, |
7561 | .symlink = nfs4_proc_symlink, | |
7562 | .mkdir = nfs4_proc_mkdir, | |
7563 | .rmdir = nfs4_proc_remove, | |
7564 | .readdir = nfs4_proc_readdir, | |
7565 | .mknod = nfs4_proc_mknod, | |
7566 | .statfs = nfs4_proc_statfs, | |
7567 | .fsinfo = nfs4_proc_fsinfo, | |
7568 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7569 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7570 | .decode_dirent = nfs4_decode_dirent, |
7571 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7572 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7573 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7574 | .read_done = nfs4_read_done, |
1da177e4 | 7575 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7576 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7577 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7578 | .write_done = nfs4_write_done, |
1da177e4 | 7579 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7580 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7581 | .commit_done = nfs4_commit_done, |
1da177e4 | 7582 | .lock = nfs4_proc_lock, |
e50a1c2e | 7583 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7584 | .close_context = nfs4_close_context, |
2b484297 | 7585 | .open_context = nfs4_atomic_open, |
011e2a7f | 7586 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7587 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7588 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7589 | .init_client = nfs4_init_client, |
cdb7eced | 7590 | .free_client = nfs4_free_client, |
1179acc6 BS |
7591 | .create_server = nfs4_create_server, |
7592 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7593 | }; |
7594 | ||
64c2ce8b AK |
7595 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7596 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7597 | .list = nfs4_xattr_list_nfs4_acl, | |
7598 | .get = nfs4_xattr_get_nfs4_acl, | |
7599 | .set = nfs4_xattr_set_nfs4_acl, | |
7600 | }; | |
7601 | ||
7602 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7603 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
7604 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
7605 | &nfs4_xattr_nfs4_label_handler, | |
7606 | #endif | |
64c2ce8b AK |
7607 | NULL |
7608 | }; | |
7609 | ||
1da177e4 LT |
7610 | /* |
7611 | * Local variables: | |
7612 | * c-basic-offset: 8 | |
7613 | * End: | |
7614 | */ |