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 | ||
a5250def WAA |
438 | /* |
439 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
440 | * or 'false' otherwise. | |
441 | */ | |
442 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
443 | { | |
444 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
445 | ||
446 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
447 | flavor == RPC_AUTH_GSS_KRB5P) | |
448 | return true; | |
449 | ||
450 | return false; | |
451 | } | |
65de872e | 452 | |
452e9352 | 453 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 454 | { |
1da177e4 LT |
455 | spin_lock(&clp->cl_lock); |
456 | if (time_before(clp->cl_last_renewal,timestamp)) | |
457 | clp->cl_last_renewal = timestamp; | |
458 | spin_unlock(&clp->cl_lock); | |
459 | } | |
460 | ||
452e9352 TM |
461 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
462 | { | |
463 | do_renew_lease(server->nfs_client, timestamp); | |
464 | } | |
465 | ||
2a3eb2b9 CL |
466 | struct nfs4_call_sync_data { |
467 | const struct nfs_server *seq_server; | |
468 | struct nfs4_sequence_args *seq_args; | |
469 | struct nfs4_sequence_res *seq_res; | |
470 | }; | |
471 | ||
a9c92d6b CL |
472 | static void nfs4_init_sequence(struct nfs4_sequence_args *args, |
473 | struct nfs4_sequence_res *res, int cache_reply) | |
474 | { | |
475 | args->sa_slot = NULL; | |
476 | args->sa_cache_this = cache_reply; | |
477 | args->sa_privileged = 0; | |
478 | ||
479 | res->sr_slot = NULL; | |
480 | } | |
481 | ||
482 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
483 | { | |
484 | args->sa_privileged = 1; | |
485 | } | |
486 | ||
3bd2384a CL |
487 | static int nfs40_setup_sequence(const struct nfs_server *server, |
488 | struct nfs4_sequence_args *args, | |
489 | struct nfs4_sequence_res *res, | |
490 | struct rpc_task *task) | |
491 | { | |
492 | struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl; | |
493 | struct nfs4_slot *slot; | |
494 | ||
495 | /* slot already allocated? */ | |
496 | if (res->sr_slot != NULL) | |
497 | goto out_start; | |
498 | ||
499 | spin_lock(&tbl->slot_tbl_lock); | |
500 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
501 | goto out_sleep; | |
502 | ||
503 | slot = nfs4_alloc_slot(tbl); | |
504 | if (IS_ERR(slot)) { | |
505 | if (slot == ERR_PTR(-ENOMEM)) | |
506 | task->tk_timeout = HZ >> 2; | |
507 | goto out_sleep; | |
508 | } | |
509 | spin_unlock(&tbl->slot_tbl_lock); | |
510 | ||
511 | args->sa_slot = slot; | |
512 | res->sr_slot = slot; | |
513 | ||
514 | out_start: | |
515 | rpc_call_start(task); | |
516 | return 0; | |
517 | ||
518 | out_sleep: | |
519 | if (args->sa_privileged) | |
520 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
521 | NULL, RPC_PRIORITY_PRIVILEGED); | |
522 | else | |
523 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
524 | spin_unlock(&tbl->slot_tbl_lock); | |
525 | return -EAGAIN; | |
526 | } | |
527 | ||
528 | static int nfs40_sequence_done(struct rpc_task *task, | |
529 | struct nfs4_sequence_res *res) | |
530 | { | |
531 | struct nfs4_slot *slot = res->sr_slot; | |
532 | struct nfs4_slot_table *tbl; | |
533 | ||
534 | if (!RPC_WAS_SENT(task)) | |
535 | goto out; | |
536 | ||
537 | tbl = slot->table; | |
538 | spin_lock(&tbl->slot_tbl_lock); | |
539 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
540 | nfs4_free_slot(tbl, slot); | |
541 | spin_unlock(&tbl->slot_tbl_lock); | |
542 | ||
543 | res->sr_slot = NULL; | |
544 | out: | |
545 | return 1; | |
546 | } | |
547 | ||
cccef3b9 AA |
548 | #if defined(CONFIG_NFS_V4_1) |
549 | ||
d185a334 | 550 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 551 | { |
e3725ec0 | 552 | struct nfs4_session *session; |
13615871 | 553 | struct nfs4_slot_table *tbl; |
c10e4498 | 554 | bool send_new_highest_used_slotid = false; |
13615871 | 555 | |
dfb4f309 | 556 | if (!res->sr_slot) { |
13615871 AA |
557 | /* just wake up the next guy waiting since |
558 | * we may have not consumed a slot after all */ | |
691daf3b | 559 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 560 | return; |
13615871 | 561 | } |
e3725ec0 TM |
562 | tbl = res->sr_slot->table; |
563 | session = tbl->session; | |
ea028ac9 | 564 | |
35dc1d74 | 565 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
566 | /* Be nice to the server: try to ensure that the last transmitted |
567 | * value for highest_user_slotid <= target_highest_slotid | |
568 | */ | |
569 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
570 | send_new_highest_used_slotid = true; | |
571 | ||
b75ad4cd TM |
572 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
573 | send_new_highest_used_slotid = false; | |
574 | goto out_unlock; | |
575 | } | |
f4af6e2a | 576 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
577 | |
578 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
579 | send_new_highest_used_slotid = false; | |
b75ad4cd | 580 | out_unlock: |
35dc1d74 | 581 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 582 | res->sr_slot = NULL; |
c10e4498 TM |
583 | if (send_new_highest_used_slotid) |
584 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
585 | } |
586 | ||
14516c3a | 587 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 588 | { |
e3725ec0 | 589 | struct nfs4_session *session; |
933602e3 | 590 | struct nfs4_slot *slot; |
14516c3a | 591 | struct nfs_client *clp; |
ac20d163 | 592 | bool interrupted = false; |
85563073 | 593 | int ret = 1; |
b0df806c | 594 | |
468f8613 BS |
595 | /* don't increment the sequence number if the task wasn't sent */ |
596 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
597 | goto out; |
598 | ||
933602e3 | 599 | slot = res->sr_slot; |
e3725ec0 | 600 | session = slot->table->session; |
933602e3 | 601 | |
ac20d163 TM |
602 | if (slot->interrupted) { |
603 | slot->interrupted = 0; | |
604 | interrupted = true; | |
605 | } | |
606 | ||
2f92ae34 | 607 | trace_nfs4_sequence_done(session, res); |
691daf3b | 608 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
609 | switch (res->sr_status) { |
610 | case 0: | |
b0df806c | 611 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 612 | ++slot->seq_nr; |
e3725ec0 | 613 | clp = session->clp; |
8e63b6a8 | 614 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 615 | /* Check sequence flags */ |
b4410c2f TM |
616 | if (res->sr_status_flags != 0) |
617 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 618 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 619 | break; |
ac20d163 TM |
620 | case 1: |
621 | /* | |
622 | * sr_status remains 1 if an RPC level error occurred. | |
623 | * The server may or may not have processed the sequence | |
624 | * operation.. | |
625 | * Mark the slot as having hosted an interrupted RPC call. | |
626 | */ | |
627 | slot->interrupted = 1; | |
628 | goto out; | |
14516c3a TM |
629 | case -NFS4ERR_DELAY: |
630 | /* The server detected a resend of the RPC call and | |
631 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
632 | * of RFC5661. | |
633 | */ | |
df2fabff | 634 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 635 | __func__, |
df2fabff | 636 | slot->slot_nr, |
933602e3 | 637 | slot->seq_nr); |
14516c3a | 638 | goto out_retry; |
85563073 TM |
639 | case -NFS4ERR_BADSLOT: |
640 | /* | |
641 | * The slot id we used was probably retired. Try again | |
642 | * using a different slot id. | |
643 | */ | |
e8794440 TM |
644 | goto retry_nowait; |
645 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
646 | /* |
647 | * Was the last operation on this sequence interrupted? | |
648 | * If so, retry after bumping the sequence number. | |
649 | */ | |
650 | if (interrupted) { | |
651 | ++slot->seq_nr; | |
652 | goto retry_nowait; | |
653 | } | |
e8794440 TM |
654 | /* |
655 | * Could this slot have been previously retired? | |
656 | * If so, then the server may be expecting seq_nr = 1! | |
657 | */ | |
8e63b6a8 TM |
658 | if (slot->seq_nr != 1) { |
659 | slot->seq_nr = 1; | |
660 | goto retry_nowait; | |
661 | } | |
662 | break; | |
e8794440 TM |
663 | case -NFS4ERR_SEQ_FALSE_RETRY: |
664 | ++slot->seq_nr; | |
665 | goto retry_nowait; | |
14516c3a TM |
666 | default: |
667 | /* Just update the slot sequence no. */ | |
933602e3 | 668 | ++slot->seq_nr; |
b0df806c AA |
669 | } |
670 | out: | |
671 | /* The session may be reset by one of the error handlers. */ | |
672 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 673 | nfs41_sequence_free_slot(res); |
85563073 | 674 | return ret; |
e8794440 TM |
675 | retry_nowait: |
676 | if (rpc_restart_call_prepare(task)) { | |
677 | task->tk_status = 0; | |
678 | ret = 0; | |
679 | } | |
680 | goto out; | |
14516c3a | 681 | out_retry: |
d05dd4e9 | 682 | if (!rpc_restart_call(task)) |
14516c3a TM |
683 | goto out; |
684 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
685 | return 0; | |
b0df806c AA |
686 | } |
687 | ||
14516c3a TM |
688 | static int nfs4_sequence_done(struct rpc_task *task, |
689 | struct nfs4_sequence_res *res) | |
df896455 | 690 | { |
e3725ec0 | 691 | if (res->sr_slot == NULL) |
14516c3a | 692 | return 1; |
3bd2384a CL |
693 | if (!res->sr_slot->table->session) |
694 | return nfs40_sequence_done(task, res); | |
14516c3a | 695 | return nfs41_sequence_done(task, res); |
df896455 TM |
696 | } |
697 | ||
dc70d7b3 | 698 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
699 | struct nfs4_sequence_args *args, |
700 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
701 | struct rpc_task *task) |
702 | { | |
fbcd4abc AA |
703 | struct nfs4_slot *slot; |
704 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
705 | |
706 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 707 | /* slot already allocated? */ |
dfb4f309 | 708 | if (res->sr_slot != NULL) |
d9afbd1b | 709 | goto out_success; |
ce5039c1 | 710 | |
fbcd4abc AA |
711 | tbl = &session->fc_slot_table; |
712 | ||
69d206b5 TM |
713 | task->tk_timeout = 0; |
714 | ||
fbcd4abc | 715 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 716 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 717 | !args->sa_privileged) { |
0b1c8fc4 | 718 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 719 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 720 | goto out_sleep; |
689cf5c1 AB |
721 | } |
722 | ||
2dc03b7f | 723 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
724 | if (IS_ERR(slot)) { |
725 | /* If out of memory, try again in 1/4 second */ | |
726 | if (slot == ERR_PTR(-ENOMEM)) | |
727 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 728 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 729 | goto out_sleep; |
fbcd4abc AA |
730 | } |
731 | spin_unlock(&tbl->slot_tbl_lock); | |
732 | ||
2b2fa717 | 733 | args->sa_slot = slot; |
fbcd4abc | 734 | |
e8d92382 | 735 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 736 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 737 | |
dfb4f309 | 738 | res->sr_slot = slot; |
8e63b6a8 | 739 | res->sr_timestamp = jiffies; |
2a6e26cd | 740 | res->sr_status_flags = 0; |
fbcd4abc AA |
741 | /* |
742 | * sr_status is only set in decode_sequence, and so will remain | |
743 | * set to 1 if an rpc level failure occurs. | |
744 | */ | |
745 | res->sr_status = 1; | |
2f92ae34 | 746 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
747 | out_success: |
748 | rpc_call_start(task); | |
ce5039c1 | 749 | return 0; |
7b939a3f | 750 | out_sleep: |
8fe72bac TM |
751 | /* Privileged tasks are queued with top priority */ |
752 | if (args->sa_privileged) | |
1e1093c7 TM |
753 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
754 | NULL, RPC_PRIORITY_PRIVILEGED); | |
755 | else | |
756 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
757 | spin_unlock(&tbl->slot_tbl_lock); |
758 | return -EAGAIN; | |
ce5039c1 | 759 | } |
dc70d7b3 | 760 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 761 | |
5a580e0a CL |
762 | static int nfs4_setup_sequence(const struct nfs_server *server, |
763 | struct nfs4_sequence_args *args, | |
764 | struct nfs4_sequence_res *res, | |
765 | struct rpc_task *task) | |
ce5039c1 | 766 | { |
035168ab | 767 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
768 | int ret = 0; |
769 | ||
3bd2384a CL |
770 | if (!session) |
771 | return nfs40_setup_sequence(server, args, res, task); | |
035168ab | 772 | |
e8d92382 | 773 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 774 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 775 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 776 | |
9d12b216 | 777 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 778 | |
ce5039c1 AA |
779 | dprintk("<-- %s status=%d\n", __func__, ret); |
780 | return ret; | |
781 | } | |
782 | ||
ce5039c1 AA |
783 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
784 | { | |
2a3eb2b9 | 785 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 786 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 787 | |
035168ab TM |
788 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
789 | ||
d9afbd1b | 790 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
791 | } |
792 | ||
69ab40c4 AA |
793 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
794 | { | |
2a3eb2b9 | 795 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 796 | |
14516c3a | 797 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
798 | } |
799 | ||
17280175 | 800 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 801 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 802 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
803 | }; |
804 | ||
3bd2384a CL |
805 | #else /* !CONFIG_NFS_V4_1 */ |
806 | ||
9915ea7e CL |
807 | static int nfs4_setup_sequence(const struct nfs_server *server, |
808 | struct nfs4_sequence_args *args, | |
809 | struct nfs4_sequence_res *res, | |
810 | struct rpc_task *task) | |
811 | { | |
3bd2384a | 812 | return nfs40_setup_sequence(server, args, res, task); |
9915ea7e CL |
813 | } |
814 | ||
815 | static int nfs4_sequence_done(struct rpc_task *task, | |
816 | struct nfs4_sequence_res *res) | |
817 | { | |
3bd2384a | 818 | return nfs40_sequence_done(task, res); |
9915ea7e | 819 | } |
3bd2384a CL |
820 | |
821 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
822 | |
823 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
824 | { | |
825 | struct nfs4_call_sync_data *data = calldata; | |
826 | nfs4_setup_sequence(data->seq_server, | |
827 | data->seq_args, data->seq_res, task); | |
828 | } | |
829 | ||
830 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
831 | { | |
832 | struct nfs4_call_sync_data *data = calldata; | |
833 | nfs4_sequence_done(task, data->seq_res); | |
834 | } | |
835 | ||
836 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
837 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
838 | .rpc_call_done = nfs40_call_sync_done, | |
839 | }; | |
840 | ||
7c513058 BS |
841 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
842 | struct nfs_server *server, | |
ce5039c1 AA |
843 | struct rpc_message *msg, |
844 | struct nfs4_sequence_args *args, | |
8fe72bac | 845 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
846 | { |
847 | int ret; | |
848 | struct rpc_task *task; | |
9915ea7e | 849 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 850 | struct nfs4_call_sync_data data = { |
035168ab | 851 | .seq_server = server, |
ce5039c1 AA |
852 | .seq_args = args, |
853 | .seq_res = res, | |
ce5039c1 AA |
854 | }; |
855 | struct rpc_task_setup task_setup = { | |
7c513058 | 856 | .rpc_client = clnt, |
ce5039c1 | 857 | .rpc_message = msg, |
9915ea7e | 858 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
859 | .callback_data = &data |
860 | }; | |
861 | ||
ce5039c1 AA |
862 | task = rpc_run_task(&task_setup); |
863 | if (IS_ERR(task)) | |
864 | ret = PTR_ERR(task); | |
865 | else { | |
866 | ret = task->tk_status; | |
867 | rpc_put_task(task); | |
868 | } | |
869 | return ret; | |
870 | } | |
871 | ||
fd0c0953 | 872 | static |
7c513058 BS |
873 | int nfs4_call_sync(struct rpc_clnt *clnt, |
874 | struct nfs_server *server, | |
e73b83f2 BS |
875 | struct rpc_message *msg, |
876 | struct nfs4_sequence_args *args, | |
877 | struct nfs4_sequence_res *res, | |
878 | int cache_reply) | |
879 | { | |
a9c92d6b | 880 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 881 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 882 | } |
cccef3b9 | 883 | |
38478b24 | 884 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 885 | { |
38478b24 | 886 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 887 | |
38478b24 | 888 | spin_lock(&dir->i_lock); |
359d7d1c | 889 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 890 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 891 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 892 | dir->i_version = cinfo->after; |
de242c0b | 893 | nfs_fscache_invalidate(dir); |
38478b24 | 894 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
895 | } |
896 | ||
e56e0b78 | 897 | struct nfs4_opendata { |
c6d00e63 | 898 | struct kref kref; |
e56e0b78 TM |
899 | struct nfs_openargs o_arg; |
900 | struct nfs_openres o_res; | |
cdd4e68b TM |
901 | struct nfs_open_confirmargs c_arg; |
902 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
903 | struct nfs4_string owner_name; |
904 | struct nfs4_string group_name; | |
e56e0b78 | 905 | struct nfs_fattr f_attr; |
1775fd3e | 906 | struct nfs4_label *f_label; |
e56e0b78 | 907 | struct dentry *dir; |
82a2c1b7 | 908 | struct dentry *dentry; |
e56e0b78 | 909 | struct nfs4_state_owner *owner; |
aac00a8d | 910 | struct nfs4_state *state; |
e56e0b78 | 911 | struct iattr attrs; |
26e976a8 | 912 | unsigned long timestamp; |
3e309914 | 913 | unsigned int rpc_done : 1; |
bdeca1b7 | 914 | unsigned int is_recover : 1; |
24ac23ab TM |
915 | int rpc_status; |
916 | int cancelled; | |
e56e0b78 TM |
917 | }; |
918 | ||
49f9a0fa TM |
919 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
920 | int err, struct nfs4_exception *exception) | |
921 | { | |
922 | if (err != -EINVAL) | |
923 | return false; | |
924 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
925 | return false; | |
926 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
927 | exception->retry = 1; | |
928 | return true; | |
929 | } | |
930 | ||
931 | static enum open_claim_type4 | |
932 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
933 | enum open_claim_type4 claim) | |
934 | { | |
935 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
936 | return claim; | |
937 | switch (claim) { | |
938 | default: | |
939 | return claim; | |
940 | case NFS4_OPEN_CLAIM_FH: | |
941 | return NFS4_OPEN_CLAIM_NULL; | |
942 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
943 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
944 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
945 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
946 | } | |
947 | } | |
2ced46c2 TM |
948 | |
949 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
950 | { | |
951 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 952 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
953 | p->o_res.seqid = p->o_arg.seqid; |
954 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 955 | p->o_res.server = p->o_arg.server; |
5f657530 | 956 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 957 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 958 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
959 | } |
960 | ||
82a2c1b7 | 961 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 962 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 963 | const struct iattr *attrs, |
1775fd3e | 964 | struct nfs4_label *label, |
4a1c0893 | 965 | enum open_claim_type4 claim, |
8535b2be | 966 | gfp_t gfp_mask) |
e56e0b78 | 967 | { |
82a2c1b7 | 968 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
969 | struct inode *dir = parent->d_inode; |
970 | struct nfs_server *server = NFS_SERVER(dir); | |
971 | struct nfs4_opendata *p; | |
972 | ||
8535b2be | 973 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
974 | if (p == NULL) |
975 | goto err; | |
14c43f76 DQ |
976 | |
977 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
978 | if (IS_ERR(p->f_label)) | |
979 | goto err_free_p; | |
980 | ||
8535b2be | 981 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 982 | if (p->o_arg.seqid == NULL) |
14c43f76 | 983 | goto err_free_label; |
82a2c1b7 AV |
984 | nfs_sb_active(dentry->d_sb); |
985 | p->dentry = dget(dentry); | |
e56e0b78 TM |
986 | p->dir = parent; |
987 | p->owner = sp; | |
988 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
989 | p->o_arg.open_flags = flags; |
990 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
991 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
992 | * will return permission denied for all bits until close */ | |
993 | if (!(flags & O_EXCL)) { | |
994 | /* ask server to check for all possible rights as results | |
995 | * are cached */ | |
996 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
997 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 998 | } |
7539bbab | 999 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1000 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1001 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1002 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1003 | p->o_arg.server = server; |
aa9c2669 | 1004 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1005 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 1006 | p->o_arg.label = label; |
49f9a0fa TM |
1007 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1008 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1009 | case NFS4_OPEN_CLAIM_NULL: |
1010 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1011 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1012 | p->o_arg.fh = NFS_FH(dir); | |
1013 | break; | |
1014 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1015 | case NFS4_OPEN_CLAIM_FH: | |
1016 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1017 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1018 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
1019 | } | |
536e43d1 | 1020 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1021 | __u32 verf[2]; |
d77d76ff | 1022 | |
e56e0b78 TM |
1023 | p->o_arg.u.attrs = &p->attrs; |
1024 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1025 | |
1026 | verf[0] = jiffies; | |
1027 | verf[1] = current->pid; | |
1028 | memcpy(p->o_arg.u.verifier.data, verf, | |
1029 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1030 | } |
cdd4e68b TM |
1031 | p->c_arg.fh = &p->o_res.fh; |
1032 | p->c_arg.stateid = &p->o_res.stateid; | |
1033 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1034 | nfs4_init_opendata_res(p); |
c6d00e63 | 1035 | kref_init(&p->kref); |
e56e0b78 | 1036 | return p; |
14c43f76 DQ |
1037 | |
1038 | err_free_label: | |
1039 | nfs4_label_free(p->f_label); | |
1040 | err_free_p: | |
e56e0b78 TM |
1041 | kfree(p); |
1042 | err: | |
1043 | dput(parent); | |
1044 | return NULL; | |
1045 | } | |
1046 | ||
c6d00e63 | 1047 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1048 | { |
c6d00e63 TM |
1049 | struct nfs4_opendata *p = container_of(kref, |
1050 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1051 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1052 | |
1053 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1054 | if (p->state != NULL) |
1055 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1056 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
1057 | |
1058 | nfs4_label_free(p->f_label); | |
1059 | ||
c6d00e63 | 1060 | dput(p->dir); |
82a2c1b7 AV |
1061 | dput(p->dentry); |
1062 | nfs_sb_deactive(sb); | |
6926afd1 | 1063 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
1064 | kfree(p); |
1065 | } | |
1066 | ||
1067 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1068 | { | |
1069 | if (p != NULL) | |
1070 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1071 | } |
1072 | ||
06f814a3 TM |
1073 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1074 | { | |
06f814a3 TM |
1075 | int ret; |
1076 | ||
06f814a3 | 1077 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1078 | return ret; |
1079 | } | |
1080 | ||
dc0b027d | 1081 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1082 | { |
1083 | int ret = 0; | |
dc0b027d | 1084 | |
536e43d1 | 1085 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1086 | goto out; |
1087 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1088 | case FMODE_READ: |
88069f77 TM |
1089 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1090 | && state->n_rdonly != 0; | |
6ee41268 TM |
1091 | break; |
1092 | case FMODE_WRITE: | |
88069f77 TM |
1093 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1094 | && state->n_wronly != 0; | |
6ee41268 TM |
1095 | break; |
1096 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1097 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1098 | && state->n_rdwr != 0; | |
6ee41268 | 1099 | } |
dc0b027d | 1100 | out: |
6ee41268 TM |
1101 | return ret; |
1102 | } | |
1103 | ||
dc0b027d | 1104 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1105 | { |
652f89f6 TM |
1106 | if (delegation == NULL) |
1107 | return 0; | |
dc0b027d | 1108 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1109 | return 0; |
15c831bf | 1110 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1111 | return 0; |
d25be546 TM |
1112 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1113 | return 0; | |
b7391f44 | 1114 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1115 | return 1; |
1116 | } | |
1117 | ||
dc0b027d | 1118 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1119 | { |
dc0b027d | 1120 | switch (fmode) { |
e7616923 TM |
1121 | case FMODE_WRITE: |
1122 | state->n_wronly++; | |
1123 | break; | |
1124 | case FMODE_READ: | |
1125 | state->n_rdonly++; | |
1126 | break; | |
1127 | case FMODE_READ|FMODE_WRITE: | |
1128 | state->n_rdwr++; | |
1129 | } | |
dc0b027d | 1130 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1131 | } |
1132 | ||
dc0b027d | 1133 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1134 | { |
1135 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1136 | nfs4_stateid_copy(&state->stateid, stateid); |
1137 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 1138 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 1139 | switch (fmode) { |
003707c7 TM |
1140 | case FMODE_READ: |
1141 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1142 | break; | |
1143 | case FMODE_WRITE: | |
1144 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1145 | break; | |
1146 | case FMODE_READ|FMODE_WRITE: | |
1147 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1148 | } | |
e7616923 TM |
1149 | } |
1150 | ||
dc0b027d | 1151 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1152 | { |
8bda4e4c | 1153 | write_seqlock(&state->seqlock); |
dc0b027d | 1154 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1155 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1156 | } |
1157 | ||
dc0b027d | 1158 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1159 | { |
8bda4e4c TM |
1160 | /* |
1161 | * Protect the call to nfs4_state_set_mode_locked and | |
1162 | * serialise the stateid update | |
1163 | */ | |
1164 | write_seqlock(&state->seqlock); | |
003707c7 | 1165 | if (deleg_stateid != NULL) { |
f597c537 | 1166 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1167 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1168 | } | |
1169 | if (open_stateid != NULL) | |
dc0b027d | 1170 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1171 | write_sequnlock(&state->seqlock); |
1172 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1173 | update_open_stateflags(state, fmode); |
ec073428 | 1174 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1175 | } |
1176 | ||
dc0b027d | 1177 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1178 | { |
1179 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1180 | struct nfs_delegation *deleg_cur; | |
1181 | int ret = 0; | |
1182 | ||
dc0b027d | 1183 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1184 | |
1185 | rcu_read_lock(); | |
1186 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1187 | if (deleg_cur == NULL) | |
1188 | goto no_delegation; | |
1189 | ||
1190 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1191 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1192 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1193 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1194 | goto no_delegation_unlock; |
1195 | ||
1196 | if (delegation == NULL) | |
1197 | delegation = &deleg_cur->stateid; | |
f597c537 | 1198 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1199 | goto no_delegation_unlock; |
1200 | ||
b7391f44 | 1201 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1202 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1203 | ret = 1; |
1204 | no_delegation_unlock: | |
1205 | spin_unlock(&deleg_cur->lock); | |
1206 | no_delegation: | |
1207 | rcu_read_unlock(); | |
1208 | ||
1209 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1210 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1211 | ret = 1; |
1212 | } | |
1213 | ||
1214 | return ret; | |
1215 | } | |
1216 | ||
1217 | ||
dc0b027d | 1218 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1219 | { |
1220 | struct nfs_delegation *delegation; | |
1221 | ||
1222 | rcu_read_lock(); | |
1223 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1224 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1225 | rcu_read_unlock(); |
1226 | return; | |
1227 | } | |
1228 | rcu_read_unlock(); | |
57ec14c5 | 1229 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1230 | } |
1231 | ||
6ee41268 | 1232 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1233 | { |
1234 | struct nfs4_state *state = opendata->state; | |
1235 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1236 | struct nfs_delegation *delegation; | |
f448badd | 1237 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1238 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1239 | nfs4_stateid stateid; |
1240 | int ret = -EAGAIN; | |
1241 | ||
aac00a8d | 1242 | for (;;) { |
dc0b027d | 1243 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1244 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1245 | if (can_open_cached(state, fmode, open_mode)) { |
1246 | update_open_stateflags(state, fmode); | |
6ee41268 | 1247 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1248 | goto out_return_state; |
1249 | } | |
1250 | spin_unlock(&state->owner->so_lock); | |
1251 | } | |
34310430 TM |
1252 | rcu_read_lock(); |
1253 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1254 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1255 | rcu_read_unlock(); |
aac00a8d | 1256 | break; |
34310430 | 1257 | } |
aac00a8d | 1258 | /* Save the delegation */ |
f597c537 | 1259 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1260 | rcu_read_unlock(); |
fa332941 | 1261 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1262 | if (!opendata->is_recover) { |
1263 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1264 | if (ret != 0) | |
1265 | goto out; | |
1266 | } | |
aac00a8d | 1267 | ret = -EAGAIN; |
34310430 TM |
1268 | |
1269 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1270 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1271 | goto out_return_state; |
aac00a8d | 1272 | } |
aac00a8d TM |
1273 | out: |
1274 | return ERR_PTR(ret); | |
1275 | out_return_state: | |
1276 | atomic_inc(&state->count); | |
1277 | return state; | |
1278 | } | |
1279 | ||
e23008ec AA |
1280 | static void |
1281 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1282 | { | |
1283 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1284 | struct nfs_delegation *delegation; | |
1285 | int delegation_flags = 0; | |
1286 | ||
1287 | rcu_read_lock(); | |
1288 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1289 | if (delegation) | |
1290 | delegation_flags = delegation->flags; | |
1291 | rcu_read_unlock(); | |
1292 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1293 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1294 | "returning a delegation for " | |
1295 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1296 | clp->cl_hostname); | |
1297 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1298 | nfs_inode_set_delegation(state->inode, | |
1299 | data->owner->so_cred, | |
1300 | &data->o_res); | |
1301 | else | |
1302 | nfs_inode_reclaim_delegation(state->inode, | |
1303 | data->owner->so_cred, | |
1304 | &data->o_res); | |
1305 | } | |
1306 | ||
1307 | /* | |
1308 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1309 | * and update the nfs4_state. | |
1310 | */ | |
1311 | static struct nfs4_state * | |
1312 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1313 | { | |
1314 | struct inode *inode = data->state->inode; | |
1315 | struct nfs4_state *state = data->state; | |
1316 | int ret; | |
1317 | ||
1318 | if (!data->rpc_done) { | |
1319 | ret = data->rpc_status; | |
1320 | goto err; | |
1321 | } | |
1322 | ||
1323 | ret = -ESTALE; | |
1324 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1325 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1326 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1327 | goto err; | |
1328 | ||
1329 | ret = -ENOMEM; | |
1330 | state = nfs4_get_open_state(inode, data->owner); | |
1331 | if (state == NULL) | |
1332 | goto err; | |
1333 | ||
1334 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1335 | if (ret) | |
1336 | goto err; | |
1337 | ||
aa9c2669 DQ |
1338 | nfs_setsecurity(inode, &data->f_attr, data->f_label); |
1339 | ||
e23008ec AA |
1340 | if (data->o_res.delegation_type != 0) |
1341 | nfs4_opendata_check_deleg(data, state); | |
1342 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1343 | data->o_arg.fmode); | |
1344 | ||
1345 | return state; | |
1346 | err: | |
1347 | return ERR_PTR(ret); | |
1348 | ||
1349 | } | |
1350 | ||
1351 | static struct nfs4_state * | |
1352 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1353 | { |
1354 | struct inode *inode; | |
1355 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1356 | int ret; |
24ac23ab | 1357 | |
aac00a8d | 1358 | if (!data->rpc_done) { |
6ee41268 | 1359 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1360 | goto out; |
1361 | } | |
1362 | ||
1b370bc2 | 1363 | ret = -EAGAIN; |
24ac23ab | 1364 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1365 | goto err; |
1775fd3e | 1366 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1367 | ret = PTR_ERR(inode); |
03f28e3a | 1368 | if (IS_ERR(inode)) |
1b370bc2 TM |
1369 | goto err; |
1370 | ret = -ENOMEM; | |
24ac23ab TM |
1371 | state = nfs4_get_open_state(inode, data->owner); |
1372 | if (state == NULL) | |
1b370bc2 | 1373 | goto err_put_inode; |
e23008ec AA |
1374 | if (data->o_res.delegation_type != 0) |
1375 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1376 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1377 | data->o_arg.fmode); |
24ac23ab | 1378 | iput(inode); |
aac00a8d | 1379 | out: |
7aa262b5 | 1380 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1381 | return state; |
1b370bc2 TM |
1382 | err_put_inode: |
1383 | iput(inode); | |
1384 | err: | |
1385 | return ERR_PTR(ret); | |
24ac23ab TM |
1386 | } |
1387 | ||
e23008ec AA |
1388 | static struct nfs4_state * |
1389 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1390 | { | |
1391 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1392 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1393 | return _nfs4_opendata_to_nfs4_state(data); | |
1394 | } | |
1395 | ||
864472e9 TM |
1396 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1397 | { | |
1398 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1399 | struct nfs_open_context *ctx; | |
1400 | ||
1401 | spin_lock(&state->inode->i_lock); | |
1402 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1403 | if (ctx->state != state) | |
1404 | continue; | |
1405 | get_nfs_open_context(ctx); | |
1406 | spin_unlock(&state->inode->i_lock); | |
1407 | return ctx; | |
1408 | } | |
1409 | spin_unlock(&state->inode->i_lock); | |
1410 | return ERR_PTR(-ENOENT); | |
1411 | } | |
1412 | ||
4a1c0893 TM |
1413 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1414 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1415 | { |
1416 | struct nfs4_opendata *opendata; | |
1417 | ||
4a1c0893 | 1418 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1419 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1420 | if (opendata == NULL) |
1421 | return ERR_PTR(-ENOMEM); | |
1422 | opendata->state = state; | |
1423 | atomic_inc(&state->count); | |
1424 | return opendata; | |
1425 | } | |
1426 | ||
dc0b027d | 1427 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1428 | { |
2ced46c2 | 1429 | struct nfs4_state *newstate; |
864472e9 TM |
1430 | int ret; |
1431 | ||
dc0b027d TM |
1432 | opendata->o_arg.open_flags = 0; |
1433 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1434 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1435 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1436 | nfs4_init_opendata_res(opendata); | |
b257957e | 1437 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1438 | if (ret != 0) |
1439 | return ret; | |
2ced46c2 | 1440 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1441 | if (IS_ERR(newstate)) |
1442 | return PTR_ERR(newstate); | |
643168c2 | 1443 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1444 | *res = newstate; |
864472e9 TM |
1445 | return 0; |
1446 | } | |
1447 | ||
1448 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1449 | { | |
864472e9 | 1450 | struct nfs4_state *newstate; |
864472e9 TM |
1451 | int ret; |
1452 | ||
1453 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1454 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1455 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1456 | smp_rmb(); |
1457 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1458 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1459 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1460 | if (ret != 0) |
1461 | return ret; | |
2ced46c2 TM |
1462 | if (newstate != state) |
1463 | return -ESTALE; | |
864472e9 TM |
1464 | } |
1465 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1466 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1467 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1468 | if (ret != 0) |
1469 | return ret; | |
2ced46c2 TM |
1470 | if (newstate != state) |
1471 | return -ESTALE; | |
864472e9 TM |
1472 | } |
1473 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1474 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1475 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1476 | if (ret != 0) |
1477 | return ret; | |
2ced46c2 TM |
1478 | if (newstate != state) |
1479 | return -ESTALE; | |
864472e9 | 1480 | } |
1ac7e2fd TM |
1481 | /* |
1482 | * We may have performed cached opens for all three recoveries. | |
1483 | * Check if we need to update the current stateid. | |
1484 | */ | |
1485 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1486 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1487 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1488 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1489 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1490 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1491 | } |
864472e9 TM |
1492 | return 0; |
1493 | } | |
1494 | ||
1da177e4 LT |
1495 | /* |
1496 | * OPEN_RECLAIM: | |
1497 | * reclaim state on the server after a reboot. | |
1da177e4 | 1498 | */ |
539cd03a | 1499 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1500 | { |
1ac7e2fd | 1501 | struct nfs_delegation *delegation; |
864472e9 | 1502 | struct nfs4_opendata *opendata; |
dc0b027d | 1503 | fmode_t delegation_type = 0; |
1da177e4 LT |
1504 | int status; |
1505 | ||
4a1c0893 TM |
1506 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1507 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1508 | if (IS_ERR(opendata)) |
1509 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1510 | rcu_read_lock(); |
1511 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1512 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1513 | delegation_type = delegation->type; |
1ac7e2fd | 1514 | rcu_read_unlock(); |
864472e9 TM |
1515 | opendata->o_arg.u.delegation_type = delegation_type; |
1516 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1517 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1518 | return status; |
1519 | } | |
1520 | ||
539cd03a | 1521 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1522 | { |
1523 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1524 | struct nfs4_exception exception = { }; | |
1525 | int err; | |
1526 | do { | |
539cd03a | 1527 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1528 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1529 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1530 | continue; | |
168667c4 | 1531 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1532 | break; |
1533 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1534 | } while (exception.retry); |
1535 | return err; | |
1536 | } | |
1537 | ||
864472e9 TM |
1538 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1539 | { | |
1540 | struct nfs_open_context *ctx; | |
1541 | int ret; | |
1542 | ||
1543 | ctx = nfs4_state_find_open_context(state); | |
1544 | if (IS_ERR(ctx)) | |
91876b13 | 1545 | return -EAGAIN; |
539cd03a | 1546 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1547 | put_nfs_open_context(ctx); |
1548 | return ret; | |
1549 | } | |
1550 | ||
db4f2e63 | 1551 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1552 | { |
be76b5b6 TM |
1553 | switch (err) { |
1554 | default: | |
1555 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1556 | "%d.\n", __func__, err); | |
1557 | case 0: | |
1558 | case -ENOENT: | |
1559 | case -ESTALE: | |
1560 | break; | |
1561 | case -NFS4ERR_BADSESSION: | |
1562 | case -NFS4ERR_BADSLOT: | |
1563 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1564 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1565 | case -NFS4ERR_DEADSESSION: | |
1566 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1567 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1568 | return -EAGAIN; | |
1569 | case -NFS4ERR_STALE_CLIENTID: | |
1570 | case -NFS4ERR_STALE_STATEID: | |
1571 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1572 | case -NFS4ERR_EXPIRED: | |
1573 | /* Don't recall a delegation if it was lost */ | |
1574 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1575 | return -EAGAIN; | |
1576 | case -NFS4ERR_DELEG_REVOKED: | |
1577 | case -NFS4ERR_ADMIN_REVOKED: | |
1578 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1579 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1580 | nfs_inode_find_state_and_recover(state->inode, |
1581 | stateid); | |
1582 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1583 | return 0; |
1584 | case -NFS4ERR_DELAY: | |
1585 | case -NFS4ERR_GRACE: | |
1586 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1587 | ssleep(1); | |
1588 | return -EAGAIN; | |
db4f2e63 TM |
1589 | case -ENOMEM: |
1590 | case -NFS4ERR_DENIED: | |
1591 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1592 | return 0; | |
be76b5b6 | 1593 | } |
1da177e4 LT |
1594 | return err; |
1595 | } | |
1596 | ||
db4f2e63 TM |
1597 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1598 | { | |
1599 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1600 | struct nfs4_opendata *opendata; | |
1601 | int err; | |
1602 | ||
1603 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1604 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1605 | if (IS_ERR(opendata)) | |
1606 | return PTR_ERR(opendata); | |
1607 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1608 | err = nfs4_open_recover(opendata, state); | |
1609 | nfs4_opendata_put(opendata); | |
1610 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1611 | } | |
1612 | ||
cdd4e68b TM |
1613 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1614 | { | |
1615 | struct nfs4_opendata *data = calldata; | |
1616 | ||
1617 | data->rpc_status = task->tk_status; | |
26e976a8 | 1618 | if (data->rpc_status == 0) { |
f597c537 | 1619 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1620 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1621 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1622 | data->rpc_done = 1; |
26e976a8 | 1623 | } |
cdd4e68b TM |
1624 | } |
1625 | ||
1626 | static void nfs4_open_confirm_release(void *calldata) | |
1627 | { | |
1628 | struct nfs4_opendata *data = calldata; | |
1629 | struct nfs4_state *state = NULL; | |
1630 | ||
1631 | /* If this request hasn't been cancelled, do nothing */ | |
1632 | if (data->cancelled == 0) | |
1633 | goto out_free; | |
1634 | /* In case of error, no cleanup! */ | |
3e309914 | 1635 | if (!data->rpc_done) |
cdd4e68b | 1636 | goto out_free; |
cdd4e68b | 1637 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1638 | if (!IS_ERR(state)) |
643168c2 | 1639 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1640 | out_free: |
c6d00e63 | 1641 | nfs4_opendata_put(data); |
cdd4e68b TM |
1642 | } |
1643 | ||
1644 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1645 | .rpc_call_done = nfs4_open_confirm_done, |
1646 | .rpc_release = nfs4_open_confirm_release, | |
1647 | }; | |
1648 | ||
1649 | /* | |
1650 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1651 | */ | |
1652 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1653 | { | |
1654 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1655 | struct rpc_task *task; | |
5138fde0 TM |
1656 | struct rpc_message msg = { |
1657 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1658 | .rpc_argp = &data->c_arg, | |
1659 | .rpc_resp = &data->c_res, | |
1660 | .rpc_cred = data->owner->so_cred, | |
1661 | }; | |
c970aa85 TM |
1662 | struct rpc_task_setup task_setup_data = { |
1663 | .rpc_client = server->client, | |
5138fde0 | 1664 | .rpc_message = &msg, |
c970aa85 TM |
1665 | .callback_ops = &nfs4_open_confirm_ops, |
1666 | .callback_data = data, | |
101070ca | 1667 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1668 | .flags = RPC_TASK_ASYNC, |
1669 | }; | |
1da177e4 LT |
1670 | int status; |
1671 | ||
c6d00e63 | 1672 | kref_get(&data->kref); |
3e309914 TM |
1673 | data->rpc_done = 0; |
1674 | data->rpc_status = 0; | |
5138fde0 | 1675 | data->timestamp = jiffies; |
c970aa85 | 1676 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1677 | if (IS_ERR(task)) |
cdd4e68b | 1678 | return PTR_ERR(task); |
cdd4e68b TM |
1679 | status = nfs4_wait_for_completion_rpc_task(task); |
1680 | if (status != 0) { | |
1681 | data->cancelled = 1; | |
1682 | smp_wmb(); | |
1683 | } else | |
1684 | status = data->rpc_status; | |
e6b3c4db | 1685 | rpc_put_task(task); |
1da177e4 LT |
1686 | return status; |
1687 | } | |
1688 | ||
24ac23ab | 1689 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1690 | { |
24ac23ab TM |
1691 | struct nfs4_opendata *data = calldata; |
1692 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1693 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1694 | |
24ac23ab | 1695 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1696 | goto out_wait; |
aac00a8d TM |
1697 | /* |
1698 | * Check if we still need to send an OPEN call, or if we can use | |
1699 | * a delegation instead. | |
1700 | */ | |
1701 | if (data->state != NULL) { | |
1702 | struct nfs_delegation *delegation; | |
1703 | ||
dc0b027d | 1704 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1705 | goto out_no_action; |
aac00a8d TM |
1706 | rcu_read_lock(); |
1707 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1708 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1709 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1710 | can_open_delegated(delegation, data->o_arg.fmode)) |
1711 | goto unlock_no_action; | |
aac00a8d TM |
1712 | rcu_read_unlock(); |
1713 | } | |
95b72eb0 | 1714 | /* Update client id. */ |
549b19cc | 1715 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1716 | switch (data->o_arg.claim) { |
1717 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1718 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1719 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1720 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1721 | case NFS4_OPEN_CLAIM_FH: |
1722 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1723 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1724 | } | |
26e976a8 | 1725 | data->timestamp = jiffies; |
035168ab | 1726 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1727 | &data->o_arg.seq_args, |
2240a9e2 TM |
1728 | &data->o_res.seq_res, |
1729 | task) != 0) | |
1730 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1731 | |
1732 | /* Set the create mode (note dependency on the session type) */ | |
1733 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1734 | if (data->o_arg.open_flags & O_EXCL) { | |
1735 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1736 | if (nfs4_has_persistent_session(clp)) | |
1737 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1738 | else if (clp->cl_mvops->minor_version > 0) | |
1739 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1740 | } | |
6ee41268 | 1741 | return; |
652f89f6 TM |
1742 | unlock_no_action: |
1743 | rcu_read_unlock(); | |
6ee41268 TM |
1744 | out_no_action: |
1745 | task->tk_action = NULL; | |
c8da19b9 | 1746 | out_wait: |
b75ad4cd | 1747 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1748 | } |
1749 | ||
24ac23ab TM |
1750 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1751 | { | |
1752 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1753 | |
24ac23ab | 1754 | data->rpc_status = task->tk_status; |
d898528c | 1755 | |
14516c3a TM |
1756 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1757 | return; | |
d898528c | 1758 | |
24ac23ab | 1759 | if (task->tk_status == 0) { |
807d66d8 TM |
1760 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1761 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1762 | case S_IFREG: |
1763 | break; | |
1764 | case S_IFLNK: | |
24ac23ab | 1765 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1766 | break; |
1767 | case S_IFDIR: | |
24ac23ab | 1768 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1769 | break; |
1770 | default: | |
24ac23ab | 1771 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1772 | } |
6f926b5b | 1773 | } |
26e976a8 | 1774 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1775 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1776 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1777 | } |
3e309914 | 1778 | data->rpc_done = 1; |
24ac23ab | 1779 | } |
6f926b5b | 1780 | |
24ac23ab TM |
1781 | static void nfs4_open_release(void *calldata) |
1782 | { | |
1783 | struct nfs4_opendata *data = calldata; | |
1784 | struct nfs4_state *state = NULL; | |
1785 | ||
1786 | /* If this request hasn't been cancelled, do nothing */ | |
1787 | if (data->cancelled == 0) | |
1788 | goto out_free; | |
1789 | /* In case of error, no cleanup! */ | |
3e309914 | 1790 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1791 | goto out_free; |
1792 | /* In case we need an open_confirm, no cleanup! */ | |
1793 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1794 | goto out_free; | |
24ac23ab | 1795 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1796 | if (!IS_ERR(state)) |
643168c2 | 1797 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1798 | out_free: |
c6d00e63 | 1799 | nfs4_opendata_put(data); |
24ac23ab TM |
1800 | } |
1801 | ||
1802 | static const struct rpc_call_ops nfs4_open_ops = { | |
1803 | .rpc_call_prepare = nfs4_open_prepare, | |
1804 | .rpc_call_done = nfs4_open_done, | |
1805 | .rpc_release = nfs4_open_release, | |
1806 | }; | |
1807 | ||
b257957e | 1808 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1809 | { |
1810 | struct inode *dir = data->dir->d_inode; | |
1811 | struct nfs_server *server = NFS_SERVER(dir); | |
1812 | struct nfs_openargs *o_arg = &data->o_arg; | |
1813 | struct nfs_openres *o_res = &data->o_res; | |
1814 | struct rpc_task *task; | |
5138fde0 TM |
1815 | struct rpc_message msg = { |
1816 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1817 | .rpc_argp = o_arg, | |
1818 | .rpc_resp = o_res, | |
1819 | .rpc_cred = data->owner->so_cred, | |
1820 | }; | |
c970aa85 TM |
1821 | struct rpc_task_setup task_setup_data = { |
1822 | .rpc_client = server->client, | |
5138fde0 | 1823 | .rpc_message = &msg, |
c970aa85 TM |
1824 | .callback_ops = &nfs4_open_ops, |
1825 | .callback_data = data, | |
101070ca | 1826 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1827 | .flags = RPC_TASK_ASYNC, |
1828 | }; | |
24ac23ab TM |
1829 | int status; |
1830 | ||
a9c92d6b | 1831 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1832 | kref_get(&data->kref); |
3e309914 TM |
1833 | data->rpc_done = 0; |
1834 | data->rpc_status = 0; | |
2ced46c2 | 1835 | data->cancelled = 0; |
bdeca1b7 TM |
1836 | data->is_recover = 0; |
1837 | if (isrecover) { | |
8fe72bac | 1838 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1839 | data->is_recover = 1; |
1840 | } | |
c970aa85 | 1841 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1842 | if (IS_ERR(task)) |
1843 | return PTR_ERR(task); | |
1844 | status = nfs4_wait_for_completion_rpc_task(task); | |
1845 | if (status != 0) { | |
1846 | data->cancelled = 1; | |
1847 | smp_wmb(); | |
1848 | } else | |
1849 | status = data->rpc_status; | |
1850 | rpc_put_task(task); | |
1851 | ||
1852 | return status; | |
1853 | } | |
1854 | ||
1855 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1856 | { | |
1857 | struct inode *dir = data->dir->d_inode; | |
1858 | struct nfs_openres *o_res = &data->o_res; | |
1859 | int status; | |
1860 | ||
1861 | status = nfs4_run_open_task(data, 1); | |
1862 | if (status != 0 || !data->rpc_done) | |
1863 | return status; | |
1864 | ||
6926afd1 TM |
1865 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1866 | ||
b257957e AB |
1867 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1868 | status = _nfs4_proc_open_confirm(data); | |
1869 | if (status != 0) | |
1870 | return status; | |
1871 | } | |
1872 | ||
1873 | return status; | |
1874 | } | |
1875 | ||
6168f62c WAA |
1876 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1877 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1878 | struct nfs4_state *state, fmode_t fmode, |
1879 | int openflags) | |
6168f62c WAA |
1880 | { |
1881 | struct nfs_access_entry cache; | |
1882 | u32 mask; | |
1883 | ||
1884 | /* access call failed or for some reason the server doesn't | |
1885 | * support any access modes -- defer access call until later */ | |
1886 | if (opendata->o_res.access_supported == 0) | |
1887 | return 0; | |
1888 | ||
1889 | mask = 0; | |
bbd3a8ee | 1890 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1891 | * write mode bits, but POSIX allows the creating process to write. |
1892 | * use openflags to check for exec, because fmode won't | |
1893 | * always have FMODE_EXEC set when file open for exec. */ | |
1894 | if (openflags & __FMODE_EXEC) { | |
1895 | /* ONLY check for exec rights */ | |
1896 | mask = MAY_EXEC; | |
1897 | } else if (fmode & FMODE_READ) | |
1898 | mask = MAY_READ; | |
6168f62c WAA |
1899 | |
1900 | cache.cred = cred; | |
1901 | cache.jiffies = jiffies; | |
1902 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1903 | nfs_access_add_cache(state->inode, &cache); | |
1904 | ||
bbd3a8ee | 1905 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1906 | return 0; |
1907 | ||
1908 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1909 | nfs4_close_state(state, fmode); | |
998f40b5 | 1910 | return -EACCES; |
6168f62c WAA |
1911 | } |
1912 | ||
b257957e AB |
1913 | /* |
1914 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1915 | */ | |
1916 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1917 | { | |
1918 | struct inode *dir = data->dir->d_inode; | |
1919 | struct nfs_server *server = NFS_SERVER(dir); | |
1920 | struct nfs_openargs *o_arg = &data->o_arg; | |
1921 | struct nfs_openres *o_res = &data->o_res; | |
1922 | int status; | |
1923 | ||
1924 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1925 | if (!data->rpc_done) |
1926 | return status; | |
1927 | if (status != 0) { | |
1928 | if (status == -NFS4ERR_BADNAME && | |
1929 | !(o_arg->open_flags & O_CREAT)) | |
1930 | return -ENOENT; | |
24ac23ab | 1931 | return status; |
08ef7bd3 | 1932 | } |
24ac23ab | 1933 | |
6926afd1 TM |
1934 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1935 | ||
90ff0c54 | 1936 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1937 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1938 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1939 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1940 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1941 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1942 | if (status != 0) |
24ac23ab | 1943 | return status; |
1da177e4 LT |
1944 | } |
1945 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1946 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1947 | return 0; |
1da177e4 LT |
1948 | } |
1949 | ||
d83217c1 AA |
1950 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1951 | { | |
1952 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1953 | } | |
1954 | ||
1da177e4 LT |
1955 | /* |
1956 | * OPEN_EXPIRED: | |
1957 | * reclaim state on the server after a network partition. | |
1958 | * Assumes caller holds the appropriate lock | |
1959 | */ | |
539cd03a | 1960 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1961 | { |
e56e0b78 | 1962 | struct nfs4_opendata *opendata; |
864472e9 | 1963 | int ret; |
1da177e4 | 1964 | |
4a1c0893 | 1965 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1966 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1967 | if (IS_ERR(opendata)) |
1968 | return PTR_ERR(opendata); | |
864472e9 | 1969 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1970 | if (ret == -ESTALE) |
3d4ff43d | 1971 | d_drop(ctx->dentry); |
c6d00e63 | 1972 | nfs4_opendata_put(opendata); |
864472e9 | 1973 | return ret; |
1da177e4 LT |
1974 | } |
1975 | ||
a9ed2e25 | 1976 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1977 | { |
539cd03a | 1978 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1979 | struct nfs4_exception exception = { }; |
1980 | int err; | |
1981 | ||
1982 | do { | |
539cd03a | 1983 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 1984 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
1985 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1986 | continue; | |
a9ed2e25 TM |
1987 | switch (err) { |
1988 | default: | |
1989 | goto out; | |
1990 | case -NFS4ERR_GRACE: | |
1991 | case -NFS4ERR_DELAY: | |
1992 | nfs4_handle_exception(server, err, &exception); | |
1993 | err = 0; | |
1994 | } | |
202b50dc | 1995 | } while (exception.retry); |
a9ed2e25 | 1996 | out: |
202b50dc TM |
1997 | return err; |
1998 | } | |
1999 | ||
1da177e4 LT |
2000 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2001 | { | |
1da177e4 | 2002 | struct nfs_open_context *ctx; |
864472e9 | 2003 | int ret; |
1da177e4 | 2004 | |
864472e9 TM |
2005 | ctx = nfs4_state_find_open_context(state); |
2006 | if (IS_ERR(ctx)) | |
91876b13 | 2007 | return -EAGAIN; |
539cd03a | 2008 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2009 | put_nfs_open_context(ctx); |
2010 | return ret; | |
1da177e4 LT |
2011 | } |
2012 | ||
f062eb6c | 2013 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 2014 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2015 | { |
f062eb6c | 2016 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 2017 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
2018 | struct nfs_delegation *delegation; |
2019 | struct rpc_cred *cred = NULL; | |
2020 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
2021 | |
2022 | /* If a state reset has been done, test_stateid is unneeded */ | |
2023 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
2024 | return; | |
2025 | ||
ab7cb0df TM |
2026 | /* Get the delegation credential for use by test/free_stateid */ |
2027 | rcu_read_lock(); | |
2028 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
2029 | if (delegation != NULL && | |
2030 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
2031 | cred = get_rpccred(delegation->cred); | |
2032 | rcu_read_unlock(); | |
2033 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 2034 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
2035 | } else |
2036 | rcu_read_unlock(); | |
2037 | ||
3e60ffdd CL |
2038 | if (status != NFS_OK) { |
2039 | /* Free the stateid unless the server explicitly | |
2040 | * informs us the stateid is unrecognized. */ | |
2041 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2042 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 2043 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2044 | |
6938867e BS |
2045 | write_seqlock(&state->seqlock); |
2046 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2047 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2048 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2049 | } | |
ab7cb0df TM |
2050 | |
2051 | if (cred != NULL) | |
2052 | put_rpccred(cred); | |
3e60ffdd CL |
2053 | } |
2054 | ||
2055 | /** | |
2056 | * nfs41_check_open_stateid - possibly free an open stateid | |
2057 | * | |
2058 | * @state: NFSv4 state for an inode | |
2059 | * | |
2060 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2061 | * Otherwise a negative NFS4ERR value is returned. | |
2062 | */ | |
2063 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2064 | { | |
2065 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2066 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2067 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2068 | int status; |
2069 | ||
2070 | /* If a state reset has been done, test_stateid is unneeded */ | |
2071 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2072 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2073 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2074 | return -NFS4ERR_BAD_STATEID; | |
2075 | ||
ab7cb0df | 2076 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2077 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2078 | if (status != NFS_OK) { |
2079 | /* Free the stateid unless the server explicitly | |
2080 | * informs us the stateid is unrecognized. */ | |
2081 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2082 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2083 | |
2084 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2085 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2086 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2087 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2088 | } |
2089 | return status; | |
2090 | } | |
2091 | ||
2092 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2093 | { | |
eb64cf96 | 2094 | int status; |
b01dd1d8 | 2095 | |
3e60ffdd CL |
2096 | nfs41_clear_delegation_stateid(state); |
2097 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2098 | if (status != NFS_OK) |
2099 | status = nfs4_open_expired(sp, state); | |
2100 | return status; | |
f062eb6c BS |
2101 | } |
2102 | #endif | |
2103 | ||
aa53ed54 JL |
2104 | /* |
2105 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2106 | * fields corresponding to attributes that were used to store the verifier. | |
2107 | * Make sure we clobber those fields in the later setattr call | |
2108 | */ | |
2109 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2110 | { | |
2111 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2112 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2113 | sattr->ia_valid |= ATTR_ATIME; | |
2114 | ||
2115 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2116 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2117 | sattr->ia_valid |= ATTR_MTIME; | |
2118 | } | |
2119 | ||
c21443c2 TM |
2120 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2121 | fmode_t fmode, | |
2122 | int flags, | |
3efb9722 | 2123 | struct nfs_open_context *ctx) |
c21443c2 TM |
2124 | { |
2125 | struct nfs4_state_owner *sp = opendata->owner; | |
2126 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2127 | struct dentry *dentry; |
c21443c2 TM |
2128 | struct nfs4_state *state; |
2129 | unsigned int seq; | |
2130 | int ret; | |
2131 | ||
2132 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2133 | ||
2134 | ret = _nfs4_proc_open(opendata); | |
2135 | if (ret != 0) | |
2136 | goto out; | |
2137 | ||
2138 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2139 | ret = PTR_ERR(state); | |
2140 | if (IS_ERR(state)) | |
2141 | goto out; | |
2142 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2143 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2144 | ||
275bb307 TM |
2145 | dentry = opendata->dentry; |
2146 | if (dentry->d_inode == NULL) { | |
2147 | /* FIXME: Is this d_drop() ever needed? */ | |
2148 | d_drop(dentry); | |
2149 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2150 | if (dentry == NULL) { | |
2151 | dentry = opendata->dentry; | |
2152 | } else if (dentry != ctx->dentry) { | |
2153 | dput(ctx->dentry); | |
2154 | ctx->dentry = dget(dentry); | |
2155 | } | |
2156 | nfs_set_verifier(dentry, | |
2157 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2158 | } | |
2159 | ||
c21443c2 TM |
2160 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2161 | if (ret != 0) | |
2162 | goto out; | |
2163 | ||
3efb9722 | 2164 | ctx->state = state; |
c45ffdd2 TM |
2165 | if (dentry->d_inode == state->inode) { |
2166 | nfs_inode_attach_open_context(ctx); | |
2167 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2168 | nfs4_schedule_stateid_recovery(server, state); | |
2169 | } | |
c21443c2 TM |
2170 | out: |
2171 | return ret; | |
2172 | } | |
2173 | ||
1da177e4 | 2174 | /* |
24ac23ab | 2175 | * Returns a referenced nfs4_state |
1da177e4 | 2176 | */ |
82be417a | 2177 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2178 | struct nfs_open_context *ctx, |
82be417a AA |
2179 | int flags, |
2180 | struct iattr *sattr, | |
959d921f | 2181 | struct nfs4_label *label) |
1da177e4 LT |
2182 | { |
2183 | struct nfs4_state_owner *sp; | |
2184 | struct nfs4_state *state = NULL; | |
2185 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2186 | struct nfs4_opendata *opendata; |
4197a055 TM |
2187 | struct dentry *dentry = ctx->dentry; |
2188 | struct rpc_cred *cred = ctx->cred; | |
2189 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2190 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2191 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2192 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2193 | int status; |
1da177e4 LT |
2194 | |
2195 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2196 | status = -ENOMEM; |
d1e284d5 TM |
2197 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2198 | if (sp == NULL) { | |
1da177e4 LT |
2199 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2200 | goto out_err; | |
2201 | } | |
58d9714a TM |
2202 | status = nfs4_recover_expired_lease(server); |
2203 | if (status != 0) | |
b4454fe1 | 2204 | goto err_put_state_owner; |
82a2c1b7 AV |
2205 | if (dentry->d_inode != NULL) |
2206 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2207 | status = -ENOMEM; |
49f9a0fa TM |
2208 | if (dentry->d_inode) |
2209 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2210 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2211 | label, claim, GFP_KERNEL); |
e56e0b78 | 2212 | if (opendata == NULL) |
95d35cb4 | 2213 | goto err_put_state_owner; |
1da177e4 | 2214 | |
14c43f76 DQ |
2215 | if (label) { |
2216 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2217 | if (IS_ERR(olabel)) { | |
2218 | status = PTR_ERR(olabel); | |
2219 | goto err_opendata_put; | |
2220 | } | |
2221 | } | |
2222 | ||
82be417a AA |
2223 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2224 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2225 | if (!opendata->f_attr.mdsthreshold) | |
14c43f76 | 2226 | goto err_free_label; |
1549210f | 2227 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2228 | } |
82a2c1b7 AV |
2229 | if (dentry->d_inode != NULL) |
2230 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2231 | |
3efb9722 | 2232 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2233 | if (status != 0) |
14c43f76 | 2234 | goto err_free_label; |
3efb9722 | 2235 | state = ctx->state; |
6168f62c | 2236 | |
549b19cc TM |
2237 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2238 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2239 | nfs4_exclusive_attrset(opendata, sattr); |
2240 | ||
2241 | nfs_fattr_init(opendata->o_res.f_attr); | |
2242 | status = nfs4_do_setattr(state->inode, cred, | |
2243 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2244 | state, label, olabel); |
2245 | if (status == 0) { | |
0ab64e0e | 2246 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2247 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2248 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2249 | } |
0ab64e0e | 2250 | } |
82be417a AA |
2251 | |
2252 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2253 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2254 | else | |
2255 | kfree(opendata->f_attr.mdsthreshold); | |
2256 | opendata->f_attr.mdsthreshold = NULL; | |
2257 | ||
14c43f76 DQ |
2258 | nfs4_label_free(olabel); |
2259 | ||
c6d00e63 | 2260 | nfs4_opendata_put(opendata); |
1da177e4 | 2261 | nfs4_put_state_owner(sp); |
1da177e4 | 2262 | return 0; |
14c43f76 DQ |
2263 | err_free_label: |
2264 | nfs4_label_free(olabel); | |
c6d00e63 | 2265 | err_opendata_put: |
82be417a | 2266 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2267 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2268 | err_put_state_owner: |
2269 | nfs4_put_state_owner(sp); | |
1da177e4 | 2270 | out_err: |
1da177e4 LT |
2271 | return status; |
2272 | } | |
2273 | ||
2274 | ||
82be417a | 2275 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2276 | struct nfs_open_context *ctx, |
82be417a AA |
2277 | int flags, |
2278 | struct iattr *sattr, | |
959d921f | 2279 | struct nfs4_label *label) |
1da177e4 | 2280 | { |
49f9a0fa | 2281 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2282 | struct nfs4_exception exception = { }; |
2283 | struct nfs4_state *res; | |
2284 | int status; | |
2285 | ||
2286 | do { | |
959d921f | 2287 | status = _nfs4_do_open(dir, ctx, flags, sattr, label); |
3efb9722 | 2288 | res = ctx->state; |
42113a75 | 2289 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2290 | if (status == 0) |
2291 | break; | |
2292 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2293 | * book-keeping w.r.t. state-changing operations | |
2294 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2295 | * It is actually a sign of a bug on the client or on the server. | |
2296 | * | |
2297 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2298 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2299 | * have unhashed the old state_owner for us, and that we can |
2300 | * therefore safely retry using a new one. We should still warn | |
2301 | * the user though... | |
2302 | */ | |
2303 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2304 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2305 | " returned a bad sequence-id error!\n", |
2306 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2307 | exception.retry = 1; |
2308 | continue; | |
2309 | } | |
550f5747 TM |
2310 | /* |
2311 | * BAD_STATEID on OPEN means that the server cancelled our | |
2312 | * state before it received the OPEN_CONFIRM. | |
2313 | * Recover by retrying the request as per the discussion | |
2314 | * on Page 181 of RFC3530. | |
2315 | */ | |
2316 | if (status == -NFS4ERR_BAD_STATEID) { | |
2317 | exception.retry = 1; | |
2318 | continue; | |
2319 | } | |
aac00a8d TM |
2320 | if (status == -EAGAIN) { |
2321 | /* We must have found a delegation */ | |
2322 | exception.retry = 1; | |
2323 | continue; | |
2324 | } | |
49f9a0fa TM |
2325 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2326 | continue; | |
2327 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2328 | status, &exception)); |
2329 | } while (exception.retry); | |
2330 | return res; | |
2331 | } | |
2332 | ||
659bfcd6 TM |
2333 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2334 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2335 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2336 | struct nfs4_label *olabel) | |
1da177e4 | 2337 | { |
3e4f6290 | 2338 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2339 | struct nfs_setattrargs arg = { |
3e4f6290 | 2340 | .fh = NFS_FH(inode), |
1da177e4 LT |
2341 | .iap = sattr, |
2342 | .server = server, | |
2343 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2344 | .label = ilabel, |
1da177e4 LT |
2345 | }; |
2346 | struct nfs_setattrres res = { | |
2347 | .fattr = fattr, | |
1775fd3e | 2348 | .label = olabel, |
1da177e4 LT |
2349 | .server = server, |
2350 | }; | |
2351 | struct rpc_message msg = { | |
659bfcd6 TM |
2352 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2353 | .rpc_argp = &arg, | |
2354 | .rpc_resp = &res, | |
2355 | .rpc_cred = cred, | |
1da177e4 | 2356 | }; |
26e976a8 | 2357 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2358 | fmode_t fmode; |
2359 | bool truncate; | |
65e4308d | 2360 | int status; |
1da177e4 | 2361 | |
aa9c2669 DQ |
2362 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2363 | if (ilabel) | |
2364 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2365 | ||
0e574af1 | 2366 | nfs_fattr_init(fattr); |
1da177e4 | 2367 | |
ee3ae84e TM |
2368 | /* Servers should only apply open mode checks for file size changes */ |
2369 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2370 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2371 | ||
2372 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2373 | /* Use that stateid */ | |
2374 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2375 | struct nfs_lockowner lockowner = { |
2376 | .l_owner = current->files, | |
2377 | .l_pid = current->tgid, | |
2378 | }; | |
4fc8796d | 2379 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2380 | &lockowner); |
08e9eac4 | 2381 | } else |
f597c537 | 2382 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2383 | |
7c513058 | 2384 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2385 | if (status == 0 && state != NULL) |
2386 | renew_lease(server, timestamp); | |
65e4308d | 2387 | return status; |
1da177e4 LT |
2388 | } |
2389 | ||
659bfcd6 TM |
2390 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2391 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2392 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2393 | struct nfs4_label *olabel) | |
1da177e4 | 2394 | { |
3e4f6290 | 2395 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2396 | struct nfs4_exception exception = { |
2397 | .state = state, | |
3114ea7a | 2398 | .inode = inode, |
a1d0b5ee | 2399 | }; |
1da177e4 LT |
2400 | int err; |
2401 | do { | |
1775fd3e | 2402 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2403 | trace_nfs4_setattr(inode, err); |
451146be TM |
2404 | switch (err) { |
2405 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2406 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2407 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2408 | "applying open mode checks to " | |
2409 | "a SETATTR that is not " | |
2410 | "changing file size.\n", | |
2411 | server->nfs_client->cl_hostname); | |
2412 | } | |
451146be TM |
2413 | if (state && !(state->state & FMODE_WRITE)) { |
2414 | err = -EBADF; | |
2415 | if (sattr->ia_valid & ATTR_OPEN) | |
2416 | err = -EACCES; | |
2417 | goto out; | |
2418 | } | |
2419 | } | |
2420 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2421 | } while (exception.retry); |
451146be | 2422 | out: |
1da177e4 LT |
2423 | return err; |
2424 | } | |
2425 | ||
2426 | struct nfs4_closedata { | |
2427 | struct inode *inode; | |
2428 | struct nfs4_state *state; | |
2429 | struct nfs_closeargs arg; | |
2430 | struct nfs_closeres res; | |
516a6af6 | 2431 | struct nfs_fattr fattr; |
26e976a8 | 2432 | unsigned long timestamp; |
f7e8917a FI |
2433 | bool roc; |
2434 | u32 roc_barrier; | |
1da177e4 LT |
2435 | }; |
2436 | ||
963d8fe5 | 2437 | static void nfs4_free_closedata(void *data) |
9512135d | 2438 | { |
963d8fe5 TM |
2439 | struct nfs4_closedata *calldata = data; |
2440 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2441 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2442 | |
f7e8917a FI |
2443 | if (calldata->roc) |
2444 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2445 | nfs4_put_open_state(calldata->state); |
2446 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2447 | nfs4_put_state_owner(sp); |
322b2b90 | 2448 | nfs_sb_deactive(sb); |
9512135d TM |
2449 | kfree(calldata); |
2450 | } | |
2451 | ||
88069f77 TM |
2452 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2453 | fmode_t fmode) | |
2454 | { | |
2455 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2456 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2457 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2458 | case FMODE_WRITE: | |
88069f77 | 2459 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2460 | break; |
2461 | case FMODE_READ: | |
88069f77 | 2462 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2463 | break; |
2464 | case 0: | |
2465 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2466 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2467 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2468 | } | |
88069f77 TM |
2469 | spin_unlock(&state->owner->so_lock); |
2470 | } | |
2471 | ||
963d8fe5 | 2472 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2473 | { |
963d8fe5 | 2474 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2475 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2476 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2477 | ||
a3ca5651 | 2478 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2479 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2480 | return; | |
42113a75 | 2481 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2482 | /* hmm. we are done with the inode, and in the process of freeing |
2483 | * the state_owner. we keep this around to process errors | |
2484 | */ | |
1da177e4 LT |
2485 | switch (task->tk_status) { |
2486 | case 0: | |
f7e8917a FI |
2487 | if (calldata->roc) |
2488 | pnfs_roc_set_barrier(state->inode, | |
2489 | calldata->roc_barrier); | |
45328c35 | 2490 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2491 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2492 | nfs4_close_clear_stateid_flags(state, |
2493 | calldata->arg.fmode); | |
1da177e4 LT |
2494 | break; |
2495 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2496 | case -NFS4ERR_OLD_STATEID: |
2497 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2498 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2499 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2500 | break; |
1da177e4 | 2501 | default: |
72211dbe TM |
2502 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2503 | rpc_restart_call_prepare(task); | |
1da177e4 | 2504 | } |
72211dbe | 2505 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2506 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2507 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2508 | } |
2509 | ||
4ce70ada | 2510 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2511 | { |
4ce70ada | 2512 | struct nfs4_closedata *calldata = data; |
9512135d | 2513 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2514 | struct inode *inode = calldata->inode; |
88069f77 | 2515 | int call_close = 0; |
9512135d | 2516 | |
a3ca5651 | 2517 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2518 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2519 | goto out_wait; |
003707c7 | 2520 | |
88069f77 TM |
2521 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2522 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2523 | spin_lock(&state->owner->so_lock); |
003707c7 | 2524 | /* Calculate the change in open mode */ |
e7616923 | 2525 | if (state->n_rdwr == 0) { |
003707c7 | 2526 | if (state->n_rdonly == 0) { |
88069f77 TM |
2527 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2528 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2529 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2530 | } |
2531 | if (state->n_wronly == 0) { | |
88069f77 TM |
2532 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2533 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2534 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2535 | } |
e7616923 | 2536 | } |
5d422301 TM |
2537 | if (!nfs4_valid_open_stateid(state)) |
2538 | call_close = 0; | |
4cecb76f | 2539 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2540 | |
2541 | if (!call_close) { | |
963d8fe5 | 2542 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2543 | goto out_no_action; |
9512135d | 2544 | } |
88069f77 | 2545 | |
f7e8917a | 2546 | if (calldata->arg.fmode == 0) { |
88069f77 | 2547 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2548 | if (calldata->roc && |
b9536ad5 AA |
2549 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2550 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2551 | goto out_wait; |
b9536ad5 | 2552 | } |
f7e8917a | 2553 | } |
88069f77 | 2554 | |
516a6af6 | 2555 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2556 | calldata->timestamp = jiffies; |
7fdab069 | 2557 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2558 | &calldata->arg.seq_args, |
2559 | &calldata->res.seq_res, | |
2240a9e2 TM |
2560 | task) != 0) |
2561 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2562 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2563 | return; |
2564 | out_no_action: | |
2565 | task->tk_action = NULL; | |
2566 | out_wait: | |
2567 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2568 | } |
2569 | ||
963d8fe5 | 2570 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2571 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2572 | .rpc_call_done = nfs4_close_done, |
2573 | .rpc_release = nfs4_free_closedata, | |
2574 | }; | |
2575 | ||
1da177e4 LT |
2576 | /* |
2577 | * It is possible for data to be read/written from a mem-mapped file | |
2578 | * after the sys_close call (which hits the vfs layer as a flush). | |
2579 | * This means that we can't safely call nfsv4 close on a file until | |
2580 | * the inode is cleared. This in turn means that we are not good | |
2581 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2582 | * share state even when we are done with one of the three share | |
2583 | * stateid's in the inode. | |
2584 | * | |
2585 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2586 | */ | |
1f7977c1 | 2587 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2588 | { |
4a35bd41 | 2589 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2590 | struct nfs4_closedata *calldata; |
b39e625b TM |
2591 | struct nfs4_state_owner *sp = state->owner; |
2592 | struct rpc_task *task; | |
5138fde0 TM |
2593 | struct rpc_message msg = { |
2594 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2595 | .rpc_cred = state->owner->so_cred, | |
2596 | }; | |
c970aa85 TM |
2597 | struct rpc_task_setup task_setup_data = { |
2598 | .rpc_client = server->client, | |
5138fde0 | 2599 | .rpc_message = &msg, |
c970aa85 | 2600 | .callback_ops = &nfs4_close_ops, |
101070ca | 2601 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2602 | .flags = RPC_TASK_ASYNC, |
2603 | }; | |
9512135d | 2604 | int status = -ENOMEM; |
1da177e4 | 2605 | |
8535b2be | 2606 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2607 | if (calldata == NULL) |
9512135d | 2608 | goto out; |
a9c92d6b | 2609 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2610 | calldata->inode = state->inode; |
1da177e4 | 2611 | calldata->state = state; |
4a35bd41 | 2612 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2613 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2614 | /* Serialization for the sequence id */ |
8535b2be | 2615 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2616 | if (calldata->arg.seqid == NULL) |
2617 | goto out_free_calldata; | |
dc0b027d | 2618 | calldata->arg.fmode = 0; |
a65318bf | 2619 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2620 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2621 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2622 | calldata->res.server = server; |
1f7977c1 | 2623 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2624 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2625 | |
1174dd1f TM |
2626 | msg.rpc_argp = &calldata->arg; |
2627 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2628 | task_setup_data.callback_data = calldata; |
2629 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2630 | if (IS_ERR(task)) |
2631 | return PTR_ERR(task); | |
a49c3c77 TM |
2632 | status = 0; |
2633 | if (wait) | |
2634 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2635 | rpc_put_task(task); |
a49c3c77 | 2636 | return status; |
9512135d TM |
2637 | out_free_calldata: |
2638 | kfree(calldata); | |
2639 | out: | |
b39e625b TM |
2640 | nfs4_put_open_state(state); |
2641 | nfs4_put_state_owner(sp); | |
9512135d | 2642 | return status; |
1da177e4 LT |
2643 | } |
2644 | ||
2b484297 | 2645 | static struct inode * |
cd9a1c0e | 2646 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2647 | { |
1da177e4 | 2648 | struct nfs4_state *state; |
aa9c2669 DQ |
2649 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2650 | ||
2651 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2652 | |
565277f6 | 2653 | /* Protect against concurrent sillydeletes */ |
959d921f | 2654 | state = nfs4_do_open(dir, ctx, open_flags, attr, label); |
aa9c2669 DQ |
2655 | |
2656 | nfs4_label_release_security(label); | |
2657 | ||
f46e0bd3 TM |
2658 | if (IS_ERR(state)) |
2659 | return ERR_CAST(state); | |
275bb307 | 2660 | return state->inode; |
1da177e4 LT |
2661 | } |
2662 | ||
1185a552 | 2663 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2664 | { |
2665 | if (ctx->state == NULL) | |
2666 | return; | |
2667 | if (is_sync) | |
643168c2 | 2668 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2669 | else |
643168c2 | 2670 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2671 | } |
1da177e4 LT |
2672 | |
2673 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2674 | { | |
43652ad5 BH |
2675 | struct nfs4_server_caps_arg args = { |
2676 | .fhandle = fhandle, | |
2677 | }; | |
1da177e4 LT |
2678 | struct nfs4_server_caps_res res = {}; |
2679 | struct rpc_message msg = { | |
2680 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2681 | .rpc_argp = &args, |
1da177e4 LT |
2682 | .rpc_resp = &res, |
2683 | }; | |
2684 | int status; | |
2685 | ||
7c513058 | 2686 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2687 | if (status == 0) { |
2688 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2689 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2690 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2691 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2692 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2693 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2694 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2695 | server->caps |= NFS_CAP_ACLS; | |
2696 | if (res.has_links != 0) | |
2697 | server->caps |= NFS_CAP_HARDLINKS; | |
2698 | if (res.has_symlinks != 0) | |
2699 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2700 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2701 | server->caps |= NFS_CAP_FILEID; | |
2702 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2703 | server->caps |= NFS_CAP_MODE; | |
2704 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2705 | server->caps |= NFS_CAP_NLINK; | |
2706 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2707 | server->caps |= NFS_CAP_OWNER; | |
2708 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2709 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2710 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2711 | server->caps |= NFS_CAP_ATIME; | |
2712 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2713 | server->caps |= NFS_CAP_CTIME; | |
2714 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2715 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2716 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2717 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2718 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2719 | #endif | |
2720 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2721 | sizeof(server->attr_bitmask)); | |
62ab460c | 2722 | |
aa9c2669 DQ |
2723 | if (server->caps & NFS_CAP_SECURITY_LABEL) { |
2724 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2725 | res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2726 | } | |
a65318bf TM |
2727 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2728 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2729 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2730 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2731 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2732 | } |
cccef3b9 | 2733 | |
1da177e4 LT |
2734 | return status; |
2735 | } | |
2736 | ||
55a97593 | 2737 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2738 | { |
2739 | struct nfs4_exception exception = { }; | |
2740 | int err; | |
2741 | do { | |
2742 | err = nfs4_handle_exception(server, | |
2743 | _nfs4_server_capabilities(server, fhandle), | |
2744 | &exception); | |
2745 | } while (exception.retry); | |
2746 | return err; | |
2747 | } | |
2748 | ||
2749 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2750 | struct nfs_fsinfo *info) | |
2751 | { | |
aa9c2669 | 2752 | u32 bitmask[3]; |
1da177e4 | 2753 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2754 | .bitmask = bitmask, |
1da177e4 LT |
2755 | }; |
2756 | struct nfs4_lookup_res res = { | |
2757 | .server = server, | |
0e574af1 | 2758 | .fattr = info->fattr, |
1da177e4 LT |
2759 | .fh = fhandle, |
2760 | }; | |
2761 | struct rpc_message msg = { | |
2762 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2763 | .rpc_argp = &args, | |
2764 | .rpc_resp = &res, | |
2765 | }; | |
008f55d0 | 2766 | |
aa9c2669 DQ |
2767 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2768 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2769 | /* | |
2770 | * Process the label in the upcoming getfattr | |
2771 | */ | |
2772 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2773 | ||
0e574af1 | 2774 | nfs_fattr_init(info->fattr); |
7c513058 | 2775 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2776 | } |
2777 | ||
2778 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2779 | struct nfs_fsinfo *info) | |
2780 | { | |
2781 | struct nfs4_exception exception = { }; | |
2782 | int err; | |
2783 | do { | |
fb8a5ba8 | 2784 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2785 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2786 | switch (err) { |
2787 | case 0: | |
2788 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2789 | goto out; |
fb8a5ba8 BS |
2790 | default: |
2791 | err = nfs4_handle_exception(server, err, &exception); | |
2792 | } | |
1da177e4 | 2793 | } while (exception.retry); |
05e9cfb4 | 2794 | out: |
1da177e4 LT |
2795 | return err; |
2796 | } | |
2797 | ||
8f70e95f BS |
2798 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2799 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2800 | { | |
c2190661 TM |
2801 | struct rpc_auth_create_args auth_args = { |
2802 | .pseudoflavor = flavor, | |
2803 | }; | |
8f70e95f BS |
2804 | struct rpc_auth *auth; |
2805 | int ret; | |
2806 | ||
c2190661 | 2807 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2808 | if (IS_ERR(auth)) { |
75bc8821 | 2809 | ret = -EACCES; |
8f70e95f BS |
2810 | goto out; |
2811 | } | |
2812 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2813 | out: |
2814 | return ret; | |
2815 | } | |
2816 | ||
9a744ba3 CL |
2817 | /* |
2818 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2819 | * | |
2820 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2821 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2822 | * | |
2823 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2824 | * negative errno value. | |
2825 | */ | |
801a16dc | 2826 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2827 | struct nfs_fsinfo *info) |
1da177e4 | 2828 | { |
9a744ba3 CL |
2829 | /* Per 3530bis 15.33.5 */ |
2830 | static const rpc_authflavor_t flav_array[] = { | |
2831 | RPC_AUTH_GSS_KRB5P, | |
2832 | RPC_AUTH_GSS_KRB5I, | |
2833 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2834 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2835 | RPC_AUTH_NULL, |
2836 | }; | |
2837 | int status = -EPERM; | |
2838 | size_t i; | |
6a1a1e34 | 2839 | |
9a744ba3 | 2840 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2841 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2842 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2843 | continue; |
2844 | break; | |
8f70e95f | 2845 | } |
9a744ba3 | 2846 | |
fb8a5ba8 BS |
2847 | /* |
2848 | * -EACCESS could mean that the user doesn't have correct permissions | |
2849 | * to access the mount. It could also mean that we tried to mount | |
2850 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2851 | * existing mount programs don't handle -EACCES very well so it should | |
2852 | * be mapped to -EPERM instead. | |
2853 | */ | |
2854 | if (status == -EACCES) | |
2855 | status = -EPERM; | |
801a16dc BS |
2856 | return status; |
2857 | } | |
2858 | ||
2ed4b95b CL |
2859 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2860 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2861 | { | |
2862 | int mv = server->nfs_client->cl_minorversion; | |
2863 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2864 | } | |
2865 | ||
2866 | /** | |
2867 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2868 | * @server: initialized nfs_server handle | |
2869 | * @fhandle: we fill in the pseudo-fs root file handle | |
2870 | * @info: we fill in an FSINFO struct | |
2871 | * | |
2872 | * Returns zero on success, or a negative errno. | |
801a16dc | 2873 | */ |
3028eb2b BS |
2874 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2875 | struct nfs_fsinfo *info) | |
801a16dc | 2876 | { |
2ed4b95b CL |
2877 | int status; |
2878 | ||
2879 | status = nfs4_lookup_root(server, fhandle, info); | |
2880 | if ((status == -NFS4ERR_WRONGSEC) && | |
2881 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2882 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2883 | ||
1da177e4 LT |
2884 | if (status == 0) |
2885 | status = nfs4_server_capabilities(server, fhandle); | |
2886 | if (status == 0) | |
2887 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2888 | |
c12e87f4 | 2889 | return nfs4_map_errors(status); |
1da177e4 LT |
2890 | } |
2891 | ||
bae36241 BS |
2892 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2893 | struct nfs_fsinfo *info) | |
2894 | { | |
2895 | int error; | |
2896 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2897 | struct nfs4_label *label = NULL; |
bae36241 BS |
2898 | |
2899 | error = nfs4_server_capabilities(server, mntfh); | |
2900 | if (error < 0) { | |
2901 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2902 | return error; | |
2903 | } | |
2904 | ||
14c43f76 DQ |
2905 | label = nfs4_label_alloc(server, GFP_KERNEL); |
2906 | if (IS_ERR(label)) | |
2907 | return PTR_ERR(label); | |
2908 | ||
1775fd3e | 2909 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2910 | if (error < 0) { |
2911 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 2912 | goto err_free_label; |
bae36241 BS |
2913 | } |
2914 | ||
2915 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2916 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2917 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2918 | ||
14c43f76 DQ |
2919 | err_free_label: |
2920 | nfs4_label_free(label); | |
2921 | ||
bae36241 BS |
2922 | return error; |
2923 | } | |
2924 | ||
6b97fd3d MN |
2925 | /* |
2926 | * Get locations and (maybe) other attributes of a referral. | |
2927 | * Note that we'll actually follow the referral later when | |
2928 | * we detect fsid mismatch in inode revalidation | |
2929 | */ | |
f05d147f BS |
2930 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2931 | const struct qstr *name, struct nfs_fattr *fattr, | |
2932 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2933 | { |
2934 | int status = -ENOMEM; | |
2935 | struct page *page = NULL; | |
2936 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2937 | |
2938 | page = alloc_page(GFP_KERNEL); | |
2939 | if (page == NULL) | |
2940 | goto out; | |
2941 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2942 | if (locations == NULL) | |
2943 | goto out; | |
2944 | ||
f05d147f | 2945 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2946 | if (status != 0) |
2947 | goto out; | |
2948 | /* Make sure server returned a different fsid for the referral */ | |
2949 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2950 | dprintk("%s: server did not return a different fsid for" |
2951 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2952 | status = -EIO; |
2953 | goto out; | |
2954 | } | |
533eb461 AA |
2955 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2956 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2957 | |
533eb461 | 2958 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2959 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2960 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2961 | out: | |
2962 | if (page) | |
2963 | __free_page(page); | |
5d7ca35a | 2964 | kfree(locations); |
6b97fd3d MN |
2965 | return status; |
2966 | } | |
2967 | ||
1775fd3e DQ |
2968 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2969 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2970 | { |
2971 | struct nfs4_getattr_arg args = { | |
2972 | .fh = fhandle, | |
2973 | .bitmask = server->attr_bitmask, | |
2974 | }; | |
2975 | struct nfs4_getattr_res res = { | |
2976 | .fattr = fattr, | |
1775fd3e | 2977 | .label = label, |
1da177e4 LT |
2978 | .server = server, |
2979 | }; | |
2980 | struct rpc_message msg = { | |
2981 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2982 | .rpc_argp = &args, | |
2983 | .rpc_resp = &res, | |
2984 | }; | |
aa9c2669 DQ |
2985 | |
2986 | args.bitmask = nfs4_bitmask(server, label); | |
2987 | ||
0e574af1 | 2988 | nfs_fattr_init(fattr); |
7c513058 | 2989 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2990 | } |
2991 | ||
1775fd3e DQ |
2992 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2993 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2994 | { |
2995 | struct nfs4_exception exception = { }; | |
2996 | int err; | |
2997 | do { | |
b5f875a9 TM |
2998 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
2999 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3000 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3001 | &exception); |
3002 | } while (exception.retry); | |
3003 | return err; | |
3004 | } | |
3005 | ||
3006 | /* | |
3007 | * The file is not closed if it is opened due to the a request to change | |
3008 | * the size of the file. The open call will not be needed once the | |
3009 | * VFS layer lookup-intents are implemented. | |
3010 | * | |
3011 | * Close is called when the inode is destroyed. | |
3012 | * If we haven't opened the file for O_WRONLY, we | |
3013 | * need to in the size_change case to obtain a stateid. | |
3014 | * | |
3015 | * Got race? | |
3016 | * Because OPEN is always done by name in nfsv4, it is | |
3017 | * possible that we opened a different file by the same | |
3018 | * name. We can recognize this race condition, but we | |
3019 | * can't do anything about it besides returning an error. | |
3020 | * | |
3021 | * This will be fixed with VFS changes (lookup-intent). | |
3022 | */ | |
3023 | static int | |
3024 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3025 | struct iattr *sattr) | |
3026 | { | |
08e9eac4 | 3027 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3028 | struct rpc_cred *cred = NULL; |
d530838b | 3029 | struct nfs4_state *state = NULL; |
14c43f76 | 3030 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3031 | int status; |
3032 | ||
8a1636c4 | 3033 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 3034 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3035 | |
0e574af1 | 3036 | nfs_fattr_init(fattr); |
1da177e4 | 3037 | |
2669940d AA |
3038 | /* Deal with open(O_TRUNC) */ |
3039 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3040 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3041 | |
3042 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3043 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3044 | return 0; |
3045 | ||
d530838b | 3046 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3047 | if (sattr->ia_valid & ATTR_FILE) { |
3048 | struct nfs_open_context *ctx; | |
3049 | ||
3050 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3051 | if (ctx) { |
3052 | cred = ctx->cred; | |
3053 | state = ctx->state; | |
3054 | } | |
659bfcd6 | 3055 | } |
08e9eac4 | 3056 | |
14c43f76 DQ |
3057 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3058 | if (IS_ERR(label)) | |
3059 | return PTR_ERR(label); | |
3060 | ||
3061 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3062 | if (status == 0) { |
65e4308d | 3063 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3064 | nfs_setsecurity(inode, fattr, label); |
3065 | } | |
14c43f76 | 3066 | nfs4_label_free(label); |
1da177e4 LT |
3067 | return status; |
3068 | } | |
3069 | ||
0c2e53f1 TM |
3070 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3071 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3072 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3073 | { |
0c2e53f1 | 3074 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3075 | int status; |
3076 | struct nfs4_lookup_arg args = { | |
3077 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3078 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3079 | .name = name, |
3080 | }; | |
3081 | struct nfs4_lookup_res res = { | |
3082 | .server = server, | |
3083 | .fattr = fattr, | |
aa9c2669 | 3084 | .label = label, |
2b3de441 DH |
3085 | .fh = fhandle, |
3086 | }; | |
3087 | struct rpc_message msg = { | |
3088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3089 | .rpc_argp = &args, | |
3090 | .rpc_resp = &res, | |
3091 | }; | |
3092 | ||
aa9c2669 DQ |
3093 | args.bitmask = nfs4_bitmask(server, label); |
3094 | ||
2b3de441 DH |
3095 | nfs_fattr_init(fattr); |
3096 | ||
1da177e4 | 3097 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3098 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3099 | dprintk("NFS reply lookup: %d\n", status); |
3100 | return status; | |
3101 | } | |
3102 | ||
72de53ec | 3103 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3104 | { |
7ebb9315 | 3105 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3106 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3107 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3108 | fattr->nlink = 2; | |
3109 | } | |
3110 | ||
72de53ec BS |
3111 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3112 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3113 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3114 | { |
3115 | struct nfs4_exception exception = { }; | |
72de53ec | 3116 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3117 | int err; |
3118 | do { | |
1775fd3e | 3119 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3120 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3121 | switch (err) { |
08ef7bd3 | 3122 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3123 | err = -ENOENT; |
3124 | goto out; | |
0c2e53f1 | 3125 | case -NFS4ERR_MOVED: |
f05d147f | 3126 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3127 | goto out; |
0c2e53f1 | 3128 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3129 | err = -EPERM; |
3130 | if (client != *clnt) | |
3131 | goto out; | |
3132 | ||
3133 | client = nfs4_create_sec_client(client, dir, name); | |
3134 | if (IS_ERR(client)) | |
3135 | return PTR_ERR(client); | |
3136 | ||
3137 | exception.retry = 1; | |
3138 | break; | |
3139 | default: | |
3140 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3141 | } |
1da177e4 | 3142 | } while (exception.retry); |
72de53ec BS |
3143 | |
3144 | out: | |
3145 | if (err == 0) | |
3146 | *clnt = client; | |
3147 | else if (client != *clnt) | |
3148 | rpc_shutdown_client(client); | |
3149 | ||
1da177e4 LT |
3150 | return err; |
3151 | } | |
3152 | ||
80a16b21 | 3153 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3154 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3155 | struct nfs4_label *label) | |
72de53ec BS |
3156 | { |
3157 | int status; | |
3158 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3159 | ||
1775fd3e | 3160 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3161 | if (client != NFS_CLIENT(dir)) { |
3162 | rpc_shutdown_client(client); | |
3163 | nfs_fixup_secinfo_attributes(fattr); | |
3164 | } | |
3165 | return status; | |
3166 | } | |
3167 | ||
f05d147f BS |
3168 | struct rpc_clnt * |
3169 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3170 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3171 | { | |
3172 | int status; | |
3173 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
3174 | ||
1775fd3e | 3175 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
f05d147f BS |
3176 | if (status < 0) { |
3177 | rpc_shutdown_client(client); | |
3178 | return ERR_PTR(status); | |
3179 | } | |
3180 | return client; | |
3181 | } | |
3182 | ||
1da177e4 LT |
3183 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3184 | { | |
76b32999 | 3185 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3186 | struct nfs4_accessargs args = { |
3187 | .fh = NFS_FH(inode), | |
a4980e78 | 3188 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3189 | }; |
3190 | struct nfs4_accessres res = { | |
3191 | .server = server, | |
1da177e4 | 3192 | }; |
1da177e4 LT |
3193 | struct rpc_message msg = { |
3194 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3195 | .rpc_argp = &args, | |
3196 | .rpc_resp = &res, | |
3197 | .rpc_cred = entry->cred, | |
3198 | }; | |
3199 | int mode = entry->mask; | |
aa9c2669 | 3200 | int status = 0; |
1da177e4 LT |
3201 | |
3202 | /* | |
3203 | * Determine which access bits we want to ask for... | |
3204 | */ | |
3205 | if (mode & MAY_READ) | |
3206 | args.access |= NFS4_ACCESS_READ; | |
3207 | if (S_ISDIR(inode->i_mode)) { | |
3208 | if (mode & MAY_WRITE) | |
3209 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3210 | if (mode & MAY_EXEC) | |
3211 | args.access |= NFS4_ACCESS_LOOKUP; | |
3212 | } else { | |
3213 | if (mode & MAY_WRITE) | |
3214 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3215 | if (mode & MAY_EXEC) | |
3216 | args.access |= NFS4_ACCESS_EXECUTE; | |
3217 | } | |
c407d41a TM |
3218 | |
3219 | res.fattr = nfs_alloc_fattr(); | |
3220 | if (res.fattr == NULL) | |
3221 | return -ENOMEM; | |
3222 | ||
7c513058 | 3223 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3224 | if (!status) { |
6168f62c | 3225 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3226 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3227 | } |
c407d41a | 3228 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3229 | return status; |
3230 | } | |
3231 | ||
3232 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3233 | { | |
3234 | struct nfs4_exception exception = { }; | |
3235 | int err; | |
3236 | do { | |
c1578b76 TM |
3237 | err = _nfs4_proc_access(inode, entry); |
3238 | trace_nfs4_access(inode, err); | |
3239 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3240 | &exception); |
3241 | } while (exception.retry); | |
3242 | return err; | |
3243 | } | |
3244 | ||
3245 | /* | |
3246 | * TODO: For the time being, we don't try to get any attributes | |
3247 | * along with any of the zero-copy operations READ, READDIR, | |
3248 | * READLINK, WRITE. | |
3249 | * | |
3250 | * In the case of the first three, we want to put the GETATTR | |
3251 | * after the read-type operation -- this is because it is hard | |
3252 | * to predict the length of a GETATTR response in v4, and thus | |
3253 | * align the READ data correctly. This means that the GETATTR | |
3254 | * may end up partially falling into the page cache, and we should | |
3255 | * shift it into the 'tail' of the xdr_buf before processing. | |
3256 | * To do this efficiently, we need to know the total length | |
3257 | * of data received, which doesn't seem to be available outside | |
3258 | * of the RPC layer. | |
3259 | * | |
3260 | * In the case of WRITE, we also want to put the GETATTR after | |
3261 | * the operation -- in this case because we want to make sure | |
140150db | 3262 | * we get the post-operation mtime and size. |
1da177e4 LT |
3263 | * |
3264 | * Both of these changes to the XDR layer would in fact be quite | |
3265 | * minor, but I decided to leave them for a subsequent patch. | |
3266 | */ | |
3267 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3268 | unsigned int pgbase, unsigned int pglen) | |
3269 | { | |
3270 | struct nfs4_readlink args = { | |
3271 | .fh = NFS_FH(inode), | |
3272 | .pgbase = pgbase, | |
3273 | .pglen = pglen, | |
3274 | .pages = &page, | |
3275 | }; | |
f50c7000 | 3276 | struct nfs4_readlink_res res; |
1da177e4 LT |
3277 | struct rpc_message msg = { |
3278 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3279 | .rpc_argp = &args, | |
f50c7000 | 3280 | .rpc_resp = &res, |
1da177e4 LT |
3281 | }; |
3282 | ||
7c513058 | 3283 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3284 | } |
3285 | ||
3286 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3287 | unsigned int pgbase, unsigned int pglen) | |
3288 | { | |
3289 | struct nfs4_exception exception = { }; | |
3290 | int err; | |
3291 | do { | |
c1578b76 TM |
3292 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3293 | trace_nfs4_readlink(inode, err); | |
3294 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3295 | &exception); |
3296 | } while (exception.retry); | |
3297 | return err; | |
3298 | } | |
3299 | ||
1da177e4 | 3300 | /* |
8867fe58 | 3301 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3302 | */ |
1da177e4 LT |
3303 | static int |
3304 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3305 | int flags) |
1da177e4 | 3306 | { |
aa9c2669 | 3307 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3308 | struct nfs_open_context *ctx; |
1da177e4 | 3309 | struct nfs4_state *state; |
1da177e4 LT |
3310 | int status = 0; |
3311 | ||
8867fe58 MS |
3312 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3313 | if (IS_ERR(ctx)) | |
3314 | return PTR_ERR(ctx); | |
3315 | ||
aa9c2669 DQ |
3316 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3317 | ||
a8a5da99 | 3318 | sattr->ia_mode &= ~current_umask(); |
959d921f | 3319 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel); |
1da177e4 LT |
3320 | if (IS_ERR(state)) { |
3321 | status = PTR_ERR(state); | |
c0204fd2 | 3322 | goto out; |
1da177e4 | 3323 | } |
1da177e4 | 3324 | out: |
aa9c2669 | 3325 | nfs4_label_release_security(ilabel); |
8867fe58 | 3326 | put_nfs_open_context(ctx); |
1da177e4 LT |
3327 | return status; |
3328 | } | |
3329 | ||
3330 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3331 | { | |
16e42959 | 3332 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3333 | struct nfs_removeargs args = { |
1da177e4 | 3334 | .fh = NFS_FH(dir), |
26fe5750 | 3335 | .name = *name, |
16e42959 | 3336 | }; |
4fdc17b2 | 3337 | struct nfs_removeres res = { |
16e42959 | 3338 | .server = server, |
1da177e4 | 3339 | }; |
1da177e4 | 3340 | struct rpc_message msg = { |
4fdc17b2 TM |
3341 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3342 | .rpc_argp = &args, | |
3343 | .rpc_resp = &res, | |
1da177e4 | 3344 | }; |
778d2817 | 3345 | int status; |
1da177e4 | 3346 | |
7c513058 | 3347 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3348 | if (status == 0) |
16e42959 | 3349 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3350 | return status; |
3351 | } | |
3352 | ||
3353 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3354 | { | |
3355 | struct nfs4_exception exception = { }; | |
3356 | int err; | |
3357 | do { | |
078ea3df TM |
3358 | err = _nfs4_proc_remove(dir, name); |
3359 | trace_nfs4_remove(dir, name, err); | |
3360 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3361 | &exception); |
3362 | } while (exception.retry); | |
3363 | return err; | |
3364 | } | |
3365 | ||
e4eff1a6 | 3366 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3367 | { |
e4eff1a6 TM |
3368 | struct nfs_server *server = NFS_SERVER(dir); |
3369 | struct nfs_removeargs *args = msg->rpc_argp; | |
3370 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3371 | |
e4eff1a6 | 3372 | res->server = server; |
1da177e4 | 3373 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3374 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3375 | |
3376 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3377 | } |
3378 | ||
34e137cc BS |
3379 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3380 | { | |
d9afbd1b TM |
3381 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3382 | &data->args.seq_args, | |
3383 | &data->res.seq_res, | |
3384 | task); | |
1da177e4 LT |
3385 | } |
3386 | ||
e4eff1a6 | 3387 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3388 | { |
078ea3df TM |
3389 | struct nfs_unlinkdata *data = task->tk_calldata; |
3390 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3391 | |
14516c3a TM |
3392 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3393 | return 0; | |
9e33bed5 | 3394 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3395 | return 0; |
3396 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3397 | return 1; |
1da177e4 LT |
3398 | } |
3399 | ||
d3d4152a JL |
3400 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3401 | { | |
3402 | struct nfs_server *server = NFS_SERVER(dir); | |
3403 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3404 | struct nfs_renameres *res = msg->rpc_resp; | |
3405 | ||
3406 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3407 | res->server = server; |
a9c92d6b | 3408 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3409 | } |
3410 | ||
c6bfa1a1 BS |
3411 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3412 | { | |
d9afbd1b TM |
3413 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3414 | &data->args.seq_args, | |
3415 | &data->res.seq_res, | |
3416 | task); | |
d3d4152a JL |
3417 | } |
3418 | ||
3419 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3420 | struct inode *new_dir) | |
3421 | { | |
fbc6f7c2 TM |
3422 | struct nfs_renamedata *data = task->tk_calldata; |
3423 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3424 | |
3425 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3426 | return 0; | |
3427 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3428 | return 0; | |
3429 | ||
3430 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3431 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3432 | return 1; |
3433 | } | |
3434 | ||
1da177e4 LT |
3435 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3436 | struct inode *new_dir, struct qstr *new_name) | |
3437 | { | |
6caf2c82 | 3438 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3439 | struct nfs_renameargs arg = { |
1da177e4 LT |
3440 | .old_dir = NFS_FH(old_dir), |
3441 | .new_dir = NFS_FH(new_dir), | |
3442 | .old_name = old_name, | |
3443 | .new_name = new_name, | |
6caf2c82 | 3444 | }; |
e8582a8b | 3445 | struct nfs_renameres res = { |
6caf2c82 | 3446 | .server = server, |
1da177e4 | 3447 | }; |
1da177e4 LT |
3448 | struct rpc_message msg = { |
3449 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3450 | .rpc_argp = &arg, | |
3451 | .rpc_resp = &res, | |
3452 | }; | |
011fff72 | 3453 | int status = -ENOMEM; |
14c43f76 | 3454 | |
7c513058 | 3455 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3456 | if (!status) { |
3457 | update_changeattr(old_dir, &res.old_cinfo); | |
3458 | update_changeattr(new_dir, &res.new_cinfo); | |
3459 | } | |
3460 | return status; | |
3461 | } | |
3462 | ||
3463 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3464 | struct inode *new_dir, struct qstr *new_name) | |
3465 | { | |
3466 | struct nfs4_exception exception = { }; | |
3467 | int err; | |
3468 | do { | |
fbc6f7c2 TM |
3469 | err = _nfs4_proc_rename(old_dir, old_name, |
3470 | new_dir, new_name); | |
3471 | trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err); | |
3472 | err = nfs4_handle_exception(NFS_SERVER(old_dir), err, | |
1da177e4 LT |
3473 | &exception); |
3474 | } while (exception.retry); | |
3475 | return err; | |
3476 | } | |
3477 | ||
3478 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3479 | { | |
91ba2eee | 3480 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3481 | struct nfs4_link_arg arg = { |
3482 | .fh = NFS_FH(inode), | |
3483 | .dir_fh = NFS_FH(dir), | |
3484 | .name = name, | |
91ba2eee TM |
3485 | .bitmask = server->attr_bitmask, |
3486 | }; | |
91ba2eee TM |
3487 | struct nfs4_link_res res = { |
3488 | .server = server, | |
1775fd3e | 3489 | .label = NULL, |
1da177e4 | 3490 | }; |
1da177e4 LT |
3491 | struct rpc_message msg = { |
3492 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3493 | .rpc_argp = &arg, | |
91ba2eee | 3494 | .rpc_resp = &res, |
1da177e4 | 3495 | }; |
136f2627 TM |
3496 | int status = -ENOMEM; |
3497 | ||
3498 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3499 | if (res.fattr == NULL) |
136f2627 | 3500 | goto out; |
1da177e4 | 3501 | |
14c43f76 DQ |
3502 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3503 | if (IS_ERR(res.label)) { | |
3504 | status = PTR_ERR(res.label); | |
3505 | goto out; | |
3506 | } | |
aa9c2669 | 3507 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3508 | |
7c513058 | 3509 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3510 | if (!status) { |
3511 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3512 | status = nfs_post_op_update_inode(inode, res.fattr); |
3513 | if (!status) | |
3514 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3515 | } |
14c43f76 DQ |
3516 | |
3517 | ||
3518 | nfs4_label_free(res.label); | |
3519 | ||
136f2627 | 3520 | out: |
136f2627 | 3521 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3522 | return status; |
3523 | } | |
3524 | ||
3525 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3526 | { | |
3527 | struct nfs4_exception exception = { }; | |
3528 | int err; | |
3529 | do { | |
3530 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3531 | _nfs4_proc_link(inode, dir, name), | |
3532 | &exception); | |
3533 | } while (exception.retry); | |
3534 | return err; | |
3535 | } | |
3536 | ||
57dc9a57 TM |
3537 | struct nfs4_createdata { |
3538 | struct rpc_message msg; | |
3539 | struct nfs4_create_arg arg; | |
3540 | struct nfs4_create_res res; | |
3541 | struct nfs_fh fh; | |
3542 | struct nfs_fattr fattr; | |
1775fd3e | 3543 | struct nfs4_label *label; |
57dc9a57 TM |
3544 | }; |
3545 | ||
3546 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3547 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3548 | { | |
3549 | struct nfs4_createdata *data; | |
3550 | ||
3551 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3552 | if (data != NULL) { | |
3553 | struct nfs_server *server = NFS_SERVER(dir); | |
3554 | ||
14c43f76 DQ |
3555 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3556 | if (IS_ERR(data->label)) | |
3557 | goto out_free; | |
3558 | ||
57dc9a57 TM |
3559 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3560 | data->msg.rpc_argp = &data->arg; | |
3561 | data->msg.rpc_resp = &data->res; | |
3562 | data->arg.dir_fh = NFS_FH(dir); | |
3563 | data->arg.server = server; | |
3564 | data->arg.name = name; | |
3565 | data->arg.attrs = sattr; | |
3566 | data->arg.ftype = ftype; | |
aa9c2669 | 3567 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3568 | data->res.server = server; |
3569 | data->res.fh = &data->fh; | |
3570 | data->res.fattr = &data->fattr; | |
1775fd3e | 3571 | data->res.label = data->label; |
57dc9a57 | 3572 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3573 | } |
3574 | return data; | |
14c43f76 DQ |
3575 | out_free: |
3576 | kfree(data); | |
3577 | return NULL; | |
57dc9a57 TM |
3578 | } |
3579 | ||
3580 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3581 | { | |
7c513058 | 3582 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3583 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3584 | if (status == 0) { |
3585 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3586 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3587 | } |
3588 | return status; | |
3589 | } | |
3590 | ||
3591 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3592 | { | |
14c43f76 | 3593 | nfs4_label_free(data->label); |
57dc9a57 TM |
3594 | kfree(data); |
3595 | } | |
3596 | ||
4f390c15 | 3597 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3598 | struct page *page, unsigned int len, struct iattr *sattr, |
3599 | struct nfs4_label *label) | |
1da177e4 | 3600 | { |
57dc9a57 TM |
3601 | struct nfs4_createdata *data; |
3602 | int status = -ENAMETOOLONG; | |
1da177e4 | 3603 | |
94a6d753 | 3604 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3605 | goto out; |
4f390c15 | 3606 | |
57dc9a57 TM |
3607 | status = -ENOMEM; |
3608 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3609 | if (data == NULL) | |
3610 | goto out; | |
3611 | ||
3612 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3613 | data->arg.u.symlink.pages = &page; | |
3614 | data->arg.u.symlink.len = len; | |
1775fd3e | 3615 | data->arg.label = label; |
1da177e4 | 3616 | |
57dc9a57 TM |
3617 | status = nfs4_do_create(dir, dentry, data); |
3618 | ||
3619 | nfs4_free_createdata(data); | |
3620 | out: | |
1da177e4 LT |
3621 | return status; |
3622 | } | |
3623 | ||
4f390c15 | 3624 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3625 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3626 | { |
3627 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3628 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3629 | int err; |
aa9c2669 DQ |
3630 | |
3631 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3632 | ||
1da177e4 | 3633 | do { |
078ea3df TM |
3634 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3635 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3636 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3637 | &exception); |
3638 | } while (exception.retry); | |
aa9c2669 DQ |
3639 | |
3640 | nfs4_label_release_security(label); | |
1da177e4 LT |
3641 | return err; |
3642 | } | |
3643 | ||
3644 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3645 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3646 | { |
57dc9a57 TM |
3647 | struct nfs4_createdata *data; |
3648 | int status = -ENOMEM; | |
1da177e4 | 3649 | |
57dc9a57 TM |
3650 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3651 | if (data == NULL) | |
3652 | goto out; | |
3653 | ||
1775fd3e | 3654 | data->arg.label = label; |
57dc9a57 TM |
3655 | status = nfs4_do_create(dir, dentry, data); |
3656 | ||
3657 | nfs4_free_createdata(data); | |
3658 | out: | |
1da177e4 LT |
3659 | return status; |
3660 | } | |
3661 | ||
3662 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3663 | struct iattr *sattr) | |
3664 | { | |
3665 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3666 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3667 | int err; |
a8a5da99 | 3668 | |
aa9c2669 DQ |
3669 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3670 | ||
a8a5da99 | 3671 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3672 | do { |
078ea3df TM |
3673 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3674 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3675 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3676 | &exception); |
3677 | } while (exception.retry); | |
aa9c2669 DQ |
3678 | nfs4_label_release_security(label); |
3679 | ||
1da177e4 LT |
3680 | return err; |
3681 | } | |
3682 | ||
3683 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3684 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3685 | { |
3686 | struct inode *dir = dentry->d_inode; | |
3687 | struct nfs4_readdir_arg args = { | |
3688 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3689 | .pages = pages, |
1da177e4 LT |
3690 | .pgbase = 0, |
3691 | .count = count, | |
96d25e53 | 3692 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3693 | .plus = plus, |
1da177e4 LT |
3694 | }; |
3695 | struct nfs4_readdir_res res; | |
3696 | struct rpc_message msg = { | |
3697 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3698 | .rpc_argp = &args, | |
3699 | .rpc_resp = &res, | |
3700 | .rpc_cred = cred, | |
3701 | }; | |
3702 | int status; | |
3703 | ||
3110ff80 | 3704 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3705 | dentry->d_parent->d_name.name, |
3706 | dentry->d_name.name, | |
3707 | (unsigned long long)cookie); | |
c3f52af3 | 3708 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3709 | res.pgbase = args.pgbase; |
7c513058 | 3710 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3711 | if (status >= 0) { |
c3f52af3 | 3712 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3713 | status += args.pgbase; |
3714 | } | |
c4812998 TM |
3715 | |
3716 | nfs_invalidate_atime(dir); | |
3717 | ||
3110ff80 | 3718 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3719 | return status; |
3720 | } | |
3721 | ||
3722 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3723 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3724 | { |
3725 | struct nfs4_exception exception = { }; | |
3726 | int err; | |
3727 | do { | |
c1578b76 TM |
3728 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3729 | pages, count, plus); | |
3730 | trace_nfs4_readdir(dentry->d_inode, err); | |
3731 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3732 | &exception); |
3733 | } while (exception.retry); | |
3734 | return err; | |
3735 | } | |
3736 | ||
3737 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3738 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3739 | { |
57dc9a57 TM |
3740 | struct nfs4_createdata *data; |
3741 | int mode = sattr->ia_mode; | |
3742 | int status = -ENOMEM; | |
1da177e4 | 3743 | |
57dc9a57 TM |
3744 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3745 | if (data == NULL) | |
3746 | goto out; | |
3747 | ||
1da177e4 | 3748 | if (S_ISFIFO(mode)) |
57dc9a57 | 3749 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3750 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3751 | data->arg.ftype = NF4BLK; |
3752 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3753 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3754 | } |
3755 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3756 | data->arg.ftype = NF4CHR; |
3757 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3758 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3759 | } else if (!S_ISSOCK(mode)) { |
3760 | status = -EINVAL; | |
3761 | goto out_free; | |
1da177e4 | 3762 | } |
1775fd3e | 3763 | |
aa9c2669 | 3764 | data->arg.label = label; |
57dc9a57 | 3765 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3766 | out_free: |
57dc9a57 TM |
3767 | nfs4_free_createdata(data); |
3768 | out: | |
1da177e4 LT |
3769 | return status; |
3770 | } | |
3771 | ||
3772 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3773 | struct iattr *sattr, dev_t rdev) | |
3774 | { | |
3775 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3776 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3777 | int err; |
a8a5da99 | 3778 | |
aa9c2669 DQ |
3779 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3780 | ||
a8a5da99 | 3781 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3782 | do { |
078ea3df TM |
3783 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3784 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3785 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3786 | &exception); |
3787 | } while (exception.retry); | |
aa9c2669 DQ |
3788 | |
3789 | nfs4_label_release_security(label); | |
3790 | ||
1da177e4 LT |
3791 | return err; |
3792 | } | |
3793 | ||
3794 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3795 | struct nfs_fsstat *fsstat) | |
3796 | { | |
3797 | struct nfs4_statfs_arg args = { | |
3798 | .fh = fhandle, | |
3799 | .bitmask = server->attr_bitmask, | |
3800 | }; | |
24ad148a BH |
3801 | struct nfs4_statfs_res res = { |
3802 | .fsstat = fsstat, | |
3803 | }; | |
1da177e4 LT |
3804 | struct rpc_message msg = { |
3805 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3806 | .rpc_argp = &args, | |
24ad148a | 3807 | .rpc_resp = &res, |
1da177e4 LT |
3808 | }; |
3809 | ||
0e574af1 | 3810 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3811 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3812 | } |
3813 | ||
3814 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3815 | { | |
3816 | struct nfs4_exception exception = { }; | |
3817 | int err; | |
3818 | do { | |
3819 | err = nfs4_handle_exception(server, | |
3820 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3821 | &exception); | |
3822 | } while (exception.retry); | |
3823 | return err; | |
3824 | } | |
3825 | ||
3826 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3827 | struct nfs_fsinfo *fsinfo) | |
3828 | { | |
3829 | struct nfs4_fsinfo_arg args = { | |
3830 | .fh = fhandle, | |
3831 | .bitmask = server->attr_bitmask, | |
3832 | }; | |
3dda5e43 BH |
3833 | struct nfs4_fsinfo_res res = { |
3834 | .fsinfo = fsinfo, | |
3835 | }; | |
1da177e4 LT |
3836 | struct rpc_message msg = { |
3837 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3838 | .rpc_argp = &args, | |
3dda5e43 | 3839 | .rpc_resp = &res, |
1da177e4 LT |
3840 | }; |
3841 | ||
7c513058 | 3842 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3843 | } |
3844 | ||
3845 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3846 | { | |
3847 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3848 | unsigned long now = jiffies; |
1da177e4 LT |
3849 | int err; |
3850 | ||
3851 | do { | |
83ca7f5a | 3852 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 3853 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
3854 | if (err == 0) { |
3855 | struct nfs_client *clp = server->nfs_client; | |
3856 | ||
3857 | spin_lock(&clp->cl_lock); | |
3858 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3859 | clp->cl_last_renewal = now; | |
3860 | spin_unlock(&clp->cl_lock); | |
3861 | break; | |
3862 | } | |
3863 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3864 | } while (exception.retry); |
3865 | return err; | |
3866 | } | |
3867 | ||
3868 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3869 | { | |
e38eb650 BS |
3870 | int error; |
3871 | ||
0e574af1 | 3872 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3873 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3874 | if (error == 0) { |
3875 | /* block layout checks this! */ | |
3876 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3877 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3878 | } |
e38eb650 BS |
3879 | |
3880 | return error; | |
1da177e4 LT |
3881 | } |
3882 | ||
3883 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3884 | struct nfs_pathconf *pathconf) | |
3885 | { | |
3886 | struct nfs4_pathconf_arg args = { | |
3887 | .fh = fhandle, | |
3888 | .bitmask = server->attr_bitmask, | |
3889 | }; | |
d45b2989 BH |
3890 | struct nfs4_pathconf_res res = { |
3891 | .pathconf = pathconf, | |
3892 | }; | |
1da177e4 LT |
3893 | struct rpc_message msg = { |
3894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3895 | .rpc_argp = &args, | |
d45b2989 | 3896 | .rpc_resp = &res, |
1da177e4 LT |
3897 | }; |
3898 | ||
3899 | /* None of the pathconf attributes are mandatory to implement */ | |
3900 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3901 | memset(pathconf, 0, sizeof(*pathconf)); | |
3902 | return 0; | |
3903 | } | |
3904 | ||
0e574af1 | 3905 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3906 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3907 | } |
3908 | ||
3909 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3910 | struct nfs_pathconf *pathconf) | |
3911 | { | |
3912 | struct nfs4_exception exception = { }; | |
3913 | int err; | |
3914 | ||
3915 | do { | |
3916 | err = nfs4_handle_exception(server, | |
3917 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3918 | &exception); | |
3919 | } while (exception.retry); | |
3920 | return err; | |
3921 | } | |
3922 | ||
5521abfd | 3923 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3924 | const struct nfs_open_context *ctx, |
3925 | const struct nfs_lock_context *l_ctx, | |
3926 | fmode_t fmode) | |
3927 | { | |
3928 | const struct nfs_lockowner *lockowner = NULL; | |
3929 | ||
3930 | if (l_ctx != NULL) | |
3931 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3932 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3933 | } |
3934 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3935 | ||
5521abfd TM |
3936 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3937 | const struct nfs_open_context *ctx, | |
3938 | const struct nfs_lock_context *l_ctx, | |
3939 | fmode_t fmode) | |
3940 | { | |
3941 | nfs4_stateid current_stateid; | |
3942 | ||
3943 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3944 | return false; | |
3945 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3946 | } | |
3947 | ||
3948 | static bool nfs4_error_stateid_expired(int err) | |
3949 | { | |
3950 | switch (err) { | |
3951 | case -NFS4ERR_DELEG_REVOKED: | |
3952 | case -NFS4ERR_ADMIN_REVOKED: | |
3953 | case -NFS4ERR_BAD_STATEID: | |
3954 | case -NFS4ERR_STALE_STATEID: | |
3955 | case -NFS4ERR_OLD_STATEID: | |
3956 | case -NFS4ERR_OPENMODE: | |
3957 | case -NFS4ERR_EXPIRED: | |
3958 | return true; | |
3959 | } | |
3960 | return false; | |
3961 | } | |
3962 | ||
d20581aa BH |
3963 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3964 | { | |
cd841605 | 3965 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3966 | } |
3967 | ||
cbdabc7f | 3968 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3969 | { |
cd841605 | 3970 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3971 | |
cc668ab3 | 3972 | trace_nfs4_read(data, task->tk_status); |
9e33bed5 | 3973 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3974 | rpc_restart_call_prepare(task); |
ec06c096 | 3975 | return -EAGAIN; |
1da177e4 | 3976 | } |
8850df99 | 3977 | |
d20581aa | 3978 | __nfs4_read_done_cb(data); |
1da177e4 | 3979 | if (task->tk_status > 0) |
ec06c096 TM |
3980 | renew_lease(server, data->timestamp); |
3981 | return 0; | |
1da177e4 LT |
3982 | } |
3983 | ||
5521abfd TM |
3984 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3985 | struct nfs_readargs *args) | |
3986 | { | |
3987 | ||
3988 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3989 | nfs4_stateid_is_current(&args->stateid, | |
3990 | args->context, | |
3991 | args->lock_context, | |
3992 | FMODE_READ)) | |
3993 | return false; | |
3994 | rpc_restart_call_prepare(task); | |
3995 | return true; | |
3996 | } | |
3997 | ||
cbdabc7f AA |
3998 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3999 | { | |
4000 | ||
4001 | dprintk("--> %s\n", __func__); | |
4002 | ||
4003 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4004 | return -EAGAIN; | |
5521abfd TM |
4005 | if (nfs4_read_stateid_changed(task, &data->args)) |
4006 | return -EAGAIN; | |
d20581aa BH |
4007 | return data->read_done_cb ? data->read_done_cb(task, data) : |
4008 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
4009 | } |
4010 | ||
bdc7f021 | 4011 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 4012 | { |
1da177e4 | 4013 | data->timestamp = jiffies; |
cbdabc7f | 4014 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 4015 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
a9c92d6b | 4016 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
4017 | } |
4018 | ||
ea7c3303 BS |
4019 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
4020 | { | |
9b206149 | 4021 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4022 | &data->args.seq_args, |
4023 | &data->res.seq_res, | |
9b206149 TM |
4024 | task)) |
4025 | return; | |
4026 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4027 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
4028 | } |
4029 | ||
b029bc9b | 4030 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 4031 | { |
cd841605 | 4032 | struct inode *inode = data->header->inode; |
1da177e4 | 4033 | |
cc668ab3 | 4034 | trace_nfs4_write(data, task->tk_status); |
9e33bed5 | 4035 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4036 | rpc_restart_call_prepare(task); |
788e7a89 | 4037 | return -EAGAIN; |
1da177e4 | 4038 | } |
4f9838c7 | 4039 | if (task->tk_status >= 0) { |
1da177e4 | 4040 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 4041 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 4042 | } |
788e7a89 | 4043 | return 0; |
1da177e4 LT |
4044 | } |
4045 | ||
5521abfd TM |
4046 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
4047 | struct nfs_writeargs *args) | |
4048 | { | |
4049 | ||
4050 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4051 | nfs4_stateid_is_current(&args->stateid, | |
4052 | args->context, | |
4053 | args->lock_context, | |
4054 | FMODE_WRITE)) | |
4055 | return false; | |
4056 | rpc_restart_call_prepare(task); | |
4057 | return true; | |
4058 | } | |
4059 | ||
b029bc9b FI |
4060 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
4061 | { | |
4062 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4063 | return -EAGAIN; | |
5521abfd TM |
4064 | if (nfs4_write_stateid_changed(task, &data->args)) |
4065 | return -EAGAIN; | |
d20581aa BH |
4066 | return data->write_done_cb ? data->write_done_cb(task, data) : |
4067 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
4068 | } |
4069 | ||
5a37f851 TM |
4070 | static |
4071 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 4072 | { |
5a37f851 TM |
4073 | const struct nfs_pgio_header *hdr = data->header; |
4074 | ||
4075 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
4076 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
4077 | return false; | |
4078 | /* Otherwise, request attributes if and only if we don't hold | |
4079 | * a delegation | |
4080 | */ | |
011e2a7f | 4081 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4082 | } |
a69aef14 | 4083 | |
bdc7f021 | 4084 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 4085 | { |
cd841605 | 4086 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 4087 | |
5a37f851 | 4088 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
4089 | data->args.bitmask = NULL; |
4090 | data->res.fattr = NULL; | |
4091 | } else | |
4092 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 4093 | |
b029bc9b FI |
4094 | if (!data->write_done_cb) |
4095 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 4096 | data->res.server = server; |
1da177e4 LT |
4097 | data->timestamp = jiffies; |
4098 | ||
bdc7f021 | 4099 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
a9c92d6b | 4100 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4101 | } |
4102 | ||
c6cb80d0 BS |
4103 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
4104 | { | |
9b206149 | 4105 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4106 | &data->args.seq_args, |
4107 | &data->res.seq_res, | |
9b206149 TM |
4108 | task)) |
4109 | return; | |
4110 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4111 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
4112 | } |
4113 | ||
0b7c0153 | 4114 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4115 | { |
d9afbd1b TM |
4116 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4117 | &data->args.seq_args, | |
4118 | &data->res.seq_res, | |
4119 | task); | |
1da177e4 LT |
4120 | } |
4121 | ||
0b7c0153 | 4122 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4123 | { |
1da177e4 | 4124 | struct inode *inode = data->inode; |
14516c3a | 4125 | |
cc668ab3 | 4126 | trace_nfs4_commit(data, task->tk_status); |
9e33bed5 | 4127 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4128 | rpc_restart_call_prepare(task); |
788e7a89 | 4129 | return -EAGAIN; |
1da177e4 | 4130 | } |
788e7a89 | 4131 | return 0; |
1da177e4 LT |
4132 | } |
4133 | ||
0b7c0153 | 4134 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4135 | { |
4136 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4137 | return -EAGAIN; | |
0b7c0153 | 4138 | return data->commit_done_cb(task, data); |
5f452431 FI |
4139 | } |
4140 | ||
0b7c0153 | 4141 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4142 | { |
788e7a89 | 4143 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4144 | |
0b7c0153 FI |
4145 | if (data->commit_done_cb == NULL) |
4146 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4147 | data->res.server = server; |
bdc7f021 | 4148 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4149 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4150 | } |
4151 | ||
9bc4e3ca CL |
4152 | struct nfs4_renewdata { |
4153 | struct nfs_client *client; | |
4154 | unsigned long timestamp; | |
4155 | }; | |
4156 | ||
1da177e4 LT |
4157 | /* |
4158 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4159 | * standalone procedure for queueing an asynchronous RENEW. | |
4160 | */ | |
9bc4e3ca | 4161 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4162 | { |
9bc4e3ca CL |
4163 | struct nfs4_renewdata *data = calldata; |
4164 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4165 | |
0851de06 AB |
4166 | if (atomic_read(&clp->cl_count) > 1) |
4167 | nfs4_schedule_state_renewal(clp); | |
4168 | nfs_put_client(clp); | |
9bc4e3ca | 4169 | kfree(data); |
dc96aef9 AB |
4170 | } |
4171 | ||
9bc4e3ca | 4172 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4173 | { |
9bc4e3ca CL |
4174 | struct nfs4_renewdata *data = calldata; |
4175 | struct nfs_client *clp = data->client; | |
4176 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4177 | |
c6d01c6f | 4178 | trace_nfs4_renew_async(clp, task->tk_status); |
1da177e4 | 4179 | if (task->tk_status < 0) { |
95baa25c | 4180 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4181 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4182 | return; | |
4183 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4184 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4185 | return; |
4186 | } | |
4187 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4188 | } |
452e9352 | 4189 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4190 | } |
4191 | ||
963d8fe5 TM |
4192 | static const struct rpc_call_ops nfs4_renew_ops = { |
4193 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4194 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4195 | }; |
4196 | ||
2f60ea6b | 4197 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4198 | { |
4199 | struct rpc_message msg = { | |
4200 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4201 | .rpc_argp = clp, | |
b4454fe1 | 4202 | .rpc_cred = cred, |
1da177e4 | 4203 | }; |
9bc4e3ca | 4204 | struct nfs4_renewdata *data; |
1da177e4 | 4205 | |
2f60ea6b TM |
4206 | if (renew_flags == 0) |
4207 | return 0; | |
0851de06 AB |
4208 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4209 | return -EIO; | |
b569ad34 | 4210 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4211 | if (data == NULL) |
4212 | return -ENOMEM; | |
4213 | data->client = clp; | |
4214 | data->timestamp = jiffies; | |
bc7a05ca | 4215 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4216 | &nfs4_renew_ops, data); |
1da177e4 LT |
4217 | } |
4218 | ||
8534d4ec | 4219 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4220 | { |
4221 | struct rpc_message msg = { | |
4222 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4223 | .rpc_argp = clp, | |
b4454fe1 | 4224 | .rpc_cred = cred, |
1da177e4 LT |
4225 | }; |
4226 | unsigned long now = jiffies; | |
4227 | int status; | |
4228 | ||
bc7a05ca | 4229 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4230 | if (status < 0) |
4231 | return status; | |
452e9352 | 4232 | do_renew_lease(clp, now); |
1da177e4 LT |
4233 | return 0; |
4234 | } | |
4235 | ||
aa1870af BF |
4236 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4237 | { | |
4238 | return (server->caps & NFS_CAP_ACLS) | |
4239 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
4240 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
4241 | } | |
4242 | ||
21f498c2 TM |
4243 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4244 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4245 | * the stack. |
4246 | */ | |
21f498c2 | 4247 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4248 | |
e9e3d724 NH |
4249 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4250 | struct page **pages, unsigned int *pgbase) | |
4251 | { | |
4252 | struct page *newpage, **spages; | |
4253 | int rc = 0; | |
4254 | size_t len; | |
4255 | spages = pages; | |
4256 | ||
4257 | do { | |
21f498c2 | 4258 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4259 | newpage = alloc_page(GFP_KERNEL); |
4260 | ||
4261 | if (newpage == NULL) | |
4262 | goto unwind; | |
4263 | memcpy(page_address(newpage), buf, len); | |
4264 | buf += len; | |
4265 | buflen -= len; | |
4266 | *pages++ = newpage; | |
4267 | rc++; | |
4268 | } while (buflen != 0); | |
4269 | ||
4270 | return rc; | |
4271 | ||
4272 | unwind: | |
4273 | for(; rc > 0; rc--) | |
4274 | __free_page(spages[rc-1]); | |
4275 | return -ENOMEM; | |
4276 | } | |
4277 | ||
e50a1c2e BF |
4278 | struct nfs4_cached_acl { |
4279 | int cached; | |
4280 | size_t len; | |
3e9d4154 | 4281 | char data[0]; |
e50a1c2e BF |
4282 | }; |
4283 | ||
4284 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4285 | { | |
4286 | struct nfs_inode *nfsi = NFS_I(inode); | |
4287 | ||
4288 | spin_lock(&inode->i_lock); | |
4289 | kfree(nfsi->nfs4_acl); | |
4290 | nfsi->nfs4_acl = acl; | |
4291 | spin_unlock(&inode->i_lock); | |
4292 | } | |
4293 | ||
4294 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4295 | { | |
4296 | nfs4_set_cached_acl(inode, NULL); | |
4297 | } | |
4298 | ||
4299 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4300 | { | |
4301 | struct nfs_inode *nfsi = NFS_I(inode); | |
4302 | struct nfs4_cached_acl *acl; | |
4303 | int ret = -ENOENT; | |
4304 | ||
4305 | spin_lock(&inode->i_lock); | |
4306 | acl = nfsi->nfs4_acl; | |
4307 | if (acl == NULL) | |
4308 | goto out; | |
4309 | if (buf == NULL) /* user is just asking for length */ | |
4310 | goto out_len; | |
4311 | if (acl->cached == 0) | |
4312 | goto out; | |
4313 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4314 | if (acl->len > buflen) | |
4315 | goto out; | |
4316 | memcpy(buf, acl->data, acl->len); | |
4317 | out_len: | |
4318 | ret = acl->len; | |
4319 | out: | |
4320 | spin_unlock(&inode->i_lock); | |
4321 | return ret; | |
4322 | } | |
4323 | ||
5794d21e | 4324 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4325 | { |
4326 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4327 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4328 | |
1f1ea6c2 | 4329 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4330 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4331 | if (acl == NULL) |
4332 | goto out; | |
4333 | acl->cached = 1; | |
5794d21e | 4334 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4335 | } else { |
4336 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4337 | if (acl == NULL) | |
4338 | goto out; | |
4339 | acl->cached = 0; | |
4340 | } | |
4341 | acl->len = acl_len; | |
4342 | out: | |
4343 | nfs4_set_cached_acl(inode, acl); | |
4344 | } | |
4345 | ||
bf118a34 AA |
4346 | /* |
4347 | * The getxattr API returns the required buffer length when called with a | |
4348 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4349 | * the required buf. On a NULL buf, we send a page of data to the server | |
4350 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4351 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4352 | * the cache. If not so, we throw away the page, and cache the required | |
4353 | * length. The next getxattr call will then produce another round trip to | |
4354 | * the server, this time with the input buf of the required size. | |
4355 | */ | |
16b4289c | 4356 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4357 | { |
bf118a34 | 4358 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4359 | struct nfs_getaclargs args = { |
4360 | .fh = NFS_FH(inode), | |
4361 | .acl_pages = pages, | |
4362 | .acl_len = buflen, | |
4363 | }; | |
663c79b3 BH |
4364 | struct nfs_getaclres res = { |
4365 | .acl_len = buflen, | |
4366 | }; | |
aa1870af BF |
4367 | struct rpc_message msg = { |
4368 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4369 | .rpc_argp = &args, | |
663c79b3 | 4370 | .rpc_resp = &res, |
aa1870af | 4371 | }; |
21f498c2 TM |
4372 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4373 | int ret = -ENOMEM, i; | |
aa1870af | 4374 | |
bf118a34 AA |
4375 | /* As long as we're doing a round trip to the server anyway, |
4376 | * let's be prepared for a page of acl data. */ | |
4377 | if (npages == 0) | |
4378 | npages = 1; | |
21f498c2 TM |
4379 | if (npages > ARRAY_SIZE(pages)) |
4380 | return -ERANGE; | |
5a006899 | 4381 | |
bf118a34 AA |
4382 | for (i = 0; i < npages; i++) { |
4383 | pages[i] = alloc_page(GFP_KERNEL); | |
4384 | if (!pages[i]) | |
4385 | goto out_free; | |
e50a1c2e | 4386 | } |
5a006899 SP |
4387 | |
4388 | /* for decoding across pages */ | |
4389 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4390 | if (!res.acl_scratch) | |
4391 | goto out_free; | |
4392 | ||
bf118a34 AA |
4393 | args.acl_len = npages * PAGE_SIZE; |
4394 | args.acl_pgbase = 0; | |
5a006899 | 4395 | |
de040bec | 4396 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4397 | __func__, buf, buflen, npages, args.acl_len); |
4398 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4399 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4400 | if (ret) |
4401 | goto out_free; | |
bf118a34 | 4402 | |
1f1ea6c2 TM |
4403 | /* Handle the case where the passed-in buffer is too short */ |
4404 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4405 | /* Did the user only issue a request for the acl length? */ | |
4406 | if (buf == NULL) | |
4407 | goto out_ok; | |
e50a1c2e | 4408 | ret = -ERANGE; |
1f1ea6c2 | 4409 | goto out_free; |
e50a1c2e | 4410 | } |
1f1ea6c2 | 4411 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4412 | if (buf) { |
4413 | if (res.acl_len > buflen) { | |
4414 | ret = -ERANGE; | |
4415 | goto out_free; | |
4416 | } | |
1f1ea6c2 | 4417 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4418 | } |
1f1ea6c2 TM |
4419 | out_ok: |
4420 | ret = res.acl_len; | |
e50a1c2e | 4421 | out_free: |
bf118a34 AA |
4422 | for (i = 0; i < npages; i++) |
4423 | if (pages[i]) | |
4424 | __free_page(pages[i]); | |
331818f1 TM |
4425 | if (res.acl_scratch) |
4426 | __free_page(res.acl_scratch); | |
aa1870af BF |
4427 | return ret; |
4428 | } | |
4429 | ||
16b4289c TM |
4430 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4431 | { | |
4432 | struct nfs4_exception exception = { }; | |
4433 | ssize_t ret; | |
4434 | do { | |
4435 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4436 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4437 | if (ret >= 0) |
4438 | break; | |
4439 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4440 | } while (exception.retry); | |
4441 | return ret; | |
4442 | } | |
4443 | ||
e50a1c2e BF |
4444 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4445 | { | |
4446 | struct nfs_server *server = NFS_SERVER(inode); | |
4447 | int ret; | |
4448 | ||
4449 | if (!nfs4_server_supports_acls(server)) | |
4450 | return -EOPNOTSUPP; | |
4451 | ret = nfs_revalidate_inode(server, inode); | |
4452 | if (ret < 0) | |
4453 | return ret; | |
08a22b39 AK |
4454 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4455 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4456 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4457 | if (ret != -ENOENT) | |
bf118a34 AA |
4458 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4459 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4460 | return ret; |
4461 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4462 | } | |
4463 | ||
16b4289c | 4464 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4465 | { |
4466 | struct nfs_server *server = NFS_SERVER(inode); | |
4467 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4468 | struct nfs_setaclargs arg = { | |
4469 | .fh = NFS_FH(inode), | |
4470 | .acl_pages = pages, | |
4471 | .acl_len = buflen, | |
4472 | }; | |
73c403a9 | 4473 | struct nfs_setaclres res; |
4b580ee3 BF |
4474 | struct rpc_message msg = { |
4475 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4476 | .rpc_argp = &arg, | |
73c403a9 | 4477 | .rpc_resp = &res, |
4b580ee3 | 4478 | }; |
21f498c2 | 4479 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4480 | int ret, i; |
4b580ee3 BF |
4481 | |
4482 | if (!nfs4_server_supports_acls(server)) | |
4483 | return -EOPNOTSUPP; | |
21f498c2 TM |
4484 | if (npages > ARRAY_SIZE(pages)) |
4485 | return -ERANGE; | |
e9e3d724 NH |
4486 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4487 | if (i < 0) | |
4488 | return i; | |
57ec14c5 | 4489 | nfs4_inode_return_delegation(inode); |
7c513058 | 4490 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4491 | |
4492 | /* | |
4493 | * Free each page after tx, so the only ref left is | |
4494 | * held by the network stack | |
4495 | */ | |
4496 | for (; i > 0; i--) | |
4497 | put_page(pages[i-1]); | |
4498 | ||
08a22b39 AK |
4499 | /* |
4500 | * Acl update can result in inode attribute update. | |
4501 | * so mark the attribute cache invalid. | |
4502 | */ | |
4503 | spin_lock(&inode->i_lock); | |
4504 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4505 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4506 | nfs_access_zap_cache(inode); |
4507 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4508 | return ret; |
4509 | } | |
4510 | ||
16b4289c TM |
4511 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4512 | { | |
4513 | struct nfs4_exception exception = { }; | |
4514 | int err; | |
4515 | do { | |
c1578b76 TM |
4516 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4517 | trace_nfs4_set_acl(inode, err); | |
4518 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4519 | &exception); |
4520 | } while (exception.retry); | |
4521 | return err; | |
4522 | } | |
4523 | ||
aa9c2669 DQ |
4524 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4525 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4526 | size_t buflen) | |
4527 | { | |
4528 | struct nfs_server *server = NFS_SERVER(inode); | |
4529 | struct nfs_fattr fattr; | |
4530 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4531 | ||
4532 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4533 | struct nfs4_getattr_arg args = { | |
4534 | .fh = NFS_FH(inode), | |
4535 | .bitmask = bitmask, | |
4536 | }; | |
4537 | struct nfs4_getattr_res res = { | |
4538 | .fattr = &fattr, | |
4539 | .label = &label, | |
4540 | .server = server, | |
4541 | }; | |
4542 | struct rpc_message msg = { | |
4543 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4544 | .rpc_argp = &args, | |
4545 | .rpc_resp = &res, | |
4546 | }; | |
4547 | int ret; | |
4548 | ||
4549 | nfs_fattr_init(&fattr); | |
4550 | ||
4551 | ret = rpc_call_sync(server->client, &msg, 0); | |
4552 | if (ret) | |
4553 | return ret; | |
4554 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4555 | return -ENOENT; | |
4556 | if (buflen < label.len) | |
4557 | return -ERANGE; | |
4558 | return 0; | |
4559 | } | |
4560 | ||
4561 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4562 | size_t buflen) | |
4563 | { | |
4564 | struct nfs4_exception exception = { }; | |
4565 | int err; | |
4566 | ||
4567 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4568 | return -EOPNOTSUPP; | |
4569 | ||
4570 | do { | |
c1578b76 TM |
4571 | err = _nfs4_get_security_label(inode, buf, buflen); |
4572 | trace_nfs4_get_security_label(inode, err); | |
4573 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4574 | &exception); |
4575 | } while (exception.retry); | |
4576 | return err; | |
4577 | } | |
4578 | ||
4579 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4580 | struct nfs4_label *ilabel, | |
4581 | struct nfs_fattr *fattr, | |
4582 | struct nfs4_label *olabel) | |
4583 | { | |
4584 | ||
4585 | struct iattr sattr = {0}; | |
4586 | struct nfs_server *server = NFS_SERVER(inode); | |
4587 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4588 | struct nfs_setattrargs args = { | |
4589 | .fh = NFS_FH(inode), | |
4590 | .iap = &sattr, | |
4591 | .server = server, | |
4592 | .bitmask = bitmask, | |
4593 | .label = ilabel, | |
4594 | }; | |
4595 | struct nfs_setattrres res = { | |
4596 | .fattr = fattr, | |
4597 | .label = olabel, | |
4598 | .server = server, | |
4599 | }; | |
4600 | struct rpc_message msg = { | |
4601 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
4602 | .rpc_argp = &args, | |
4603 | .rpc_resp = &res, | |
4604 | }; | |
4605 | int status; | |
4606 | ||
4607 | nfs4_stateid_copy(&args.stateid, &zero_stateid); | |
4608 | ||
4609 | status = rpc_call_sync(server->client, &msg, 0); | |
4610 | if (status) | |
4611 | dprintk("%s failed: %d\n", __func__, status); | |
4612 | ||
4613 | return status; | |
4614 | } | |
4615 | ||
4616 | static int nfs4_do_set_security_label(struct inode *inode, | |
4617 | struct nfs4_label *ilabel, | |
4618 | struct nfs_fattr *fattr, | |
4619 | struct nfs4_label *olabel) | |
4620 | { | |
4621 | struct nfs4_exception exception = { }; | |
4622 | int err; | |
4623 | ||
4624 | do { | |
c1578b76 TM |
4625 | err = _nfs4_do_set_security_label(inode, ilabel, |
4626 | fattr, olabel); | |
4627 | trace_nfs4_set_security_label(inode, err); | |
4628 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4629 | &exception); |
4630 | } while (exception.retry); | |
4631 | return err; | |
4632 | } | |
4633 | ||
4634 | static int | |
4635 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4636 | { | |
4637 | struct nfs4_label ilabel, *olabel = NULL; | |
4638 | struct nfs_fattr fattr; | |
4639 | struct rpc_cred *cred; | |
4640 | struct inode *inode = dentry->d_inode; | |
4641 | int status; | |
4642 | ||
4643 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4644 | return -EOPNOTSUPP; | |
4645 | ||
4646 | nfs_fattr_init(&fattr); | |
4647 | ||
4648 | ilabel.pi = 0; | |
4649 | ilabel.lfs = 0; | |
4650 | ilabel.label = (char *)buf; | |
4651 | ilabel.len = buflen; | |
4652 | ||
4653 | cred = rpc_lookup_cred(); | |
4654 | if (IS_ERR(cred)) | |
4655 | return PTR_ERR(cred); | |
4656 | ||
4657 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4658 | if (IS_ERR(olabel)) { | |
4659 | status = -PTR_ERR(olabel); | |
4660 | goto out; | |
4661 | } | |
4662 | ||
4663 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4664 | if (status == 0) | |
4665 | nfs_setsecurity(inode, &fattr, olabel); | |
4666 | ||
4667 | nfs4_label_free(olabel); | |
4668 | out: | |
4669 | put_rpccred(cred); | |
4670 | return status; | |
4671 | } | |
4672 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4673 | ||
4674 | ||
1da177e4 | 4675 | static int |
aa5190d0 | 4676 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4677 | { |
aa5190d0 TM |
4678 | struct nfs_client *clp = server->nfs_client; |
4679 | ||
4680 | if (task->tk_status >= 0) | |
1da177e4 LT |
4681 | return 0; |
4682 | switch(task->tk_status) { | |
a1d0b5ee | 4683 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4684 | case -NFS4ERR_ADMIN_REVOKED: |
4685 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4686 | if (state == NULL) |
4687 | break; | |
4688 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4689 | case -NFS4ERR_OPENMODE: |
4690 | if (state == NULL) | |
4691 | break; | |
5d422301 TM |
4692 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4693 | goto stateid_invalid; | |
0400a6b0 | 4694 | goto wait_on_recovery; |
0ced63d1 | 4695 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4696 | if (state != NULL) { |
4697 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4698 | goto stateid_invalid; | |
4699 | } | |
1da177e4 | 4700 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4701 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4702 | nfs4_schedule_lease_recovery(clp); |
4703 | goto wait_on_recovery; | |
4745e315 AA |
4704 | #if defined(CONFIG_NFS_V4_1) |
4705 | case -NFS4ERR_BADSESSION: | |
4706 | case -NFS4ERR_BADSLOT: | |
4707 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4708 | case -NFS4ERR_DEADSESSION: | |
4709 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4710 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4711 | case -NFS4ERR_SEQ_MISORDERED: | |
4712 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4713 | task->tk_status); | |
9f594791 | 4714 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4715 | task->tk_status = 0; |
4716 | return -EAGAIN; | |
4717 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4718 | case -NFS4ERR_DELAY: |
aa5190d0 | 4719 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4720 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4721 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4722 | task->tk_status = 0; | |
4723 | return -EAGAIN; | |
a8a4ae3a | 4724 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4725 | case -NFS4ERR_OLD_STATEID: |
4726 | task->tk_status = 0; | |
4727 | return -EAGAIN; | |
4728 | } | |
4729 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4730 | return 0; | |
5d422301 TM |
4731 | stateid_invalid: |
4732 | task->tk_status = -EIO; | |
4733 | return 0; | |
0400a6b0 | 4734 | wait_on_recovery: |
a2c0b9e2 | 4735 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4736 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4737 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4738 | task->tk_status = 0; | |
4739 | return -EAGAIN; | |
1da177e4 LT |
4740 | } |
4741 | ||
f092075d CL |
4742 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4743 | nfs4_verifier *bootverf) | |
cd93710e CL |
4744 | { |
4745 | __be32 verf[2]; | |
4746 | ||
2c820d9a CL |
4747 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4748 | /* An impossible timestamp guarantees this value | |
4749 | * will never match a generated boot time. */ | |
4750 | verf[0] = 0; | |
17f26b12 | 4751 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4752 | } else { |
f092075d | 4753 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4754 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4755 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4756 | } |
cd93710e CL |
4757 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4758 | } | |
4759 | ||
e984a55a CL |
4760 | static unsigned int |
4761 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4762 | char *buf, size_t len) | |
4763 | { | |
4764 | unsigned int result; | |
4765 | ||
4766 | rcu_read_lock(); | |
4767 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4768 | clp->cl_ipaddr, | |
4769 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4770 | RPC_DISPLAY_ADDR), | |
4771 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4772 | RPC_DISPLAY_PROTO)); | |
4773 | rcu_read_unlock(); | |
4774 | return result; | |
4775 | } | |
4776 | ||
4777 | static unsigned int | |
4778 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4779 | char *buf, size_t len) | |
4780 | { | |
55b59293 | 4781 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4782 | |
4783 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4784 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4785 | clp->rpc_ops->version, | |
4786 | clp->cl_minorversion, | |
4787 | nfs4_client_id_uniquifier, | |
4788 | nodename); | |
e984a55a CL |
4789 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4790 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4791 | nodename); |
e984a55a CL |
4792 | } |
4793 | ||
6bbb4ae8 CL |
4794 | /** |
4795 | * nfs4_proc_setclientid - Negotiate client ID | |
4796 | * @clp: state data structure | |
4797 | * @program: RPC program for NFSv4 callback service | |
4798 | * @port: IP port number for NFS4 callback service | |
4799 | * @cred: RPC credential to use for this call | |
4800 | * @res: where to place the result | |
4801 | * | |
4802 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4803 | */ | |
bb8b27e5 TM |
4804 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4805 | unsigned short port, struct rpc_cred *cred, | |
4806 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4807 | { |
4808 | nfs4_verifier sc_verifier; | |
4809 | struct nfs4_setclientid setclientid = { | |
4810 | .sc_verifier = &sc_verifier, | |
4811 | .sc_prog = program, | |
f4eecd5d | 4812 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4813 | }; |
4814 | struct rpc_message msg = { | |
4815 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4816 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4817 | .rpc_resp = res, |
286d7d6a | 4818 | .rpc_cred = cred, |
1da177e4 | 4819 | }; |
6bbb4ae8 | 4820 | int status; |
1da177e4 | 4821 | |
de734831 | 4822 | /* nfs_client_id4 */ |
f092075d | 4823 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4824 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4825 | setclientid.sc_name_len = | |
4826 | nfs4_init_uniform_client_string(clp, | |
4827 | setclientid.sc_name, | |
4828 | sizeof(setclientid.sc_name)); | |
4829 | else | |
4830 | setclientid.sc_name_len = | |
4831 | nfs4_init_nonuniform_client_string(clp, | |
4832 | setclientid.sc_name, | |
4833 | sizeof(setclientid.sc_name)); | |
de734831 | 4834 | /* cb_client4 */ |
e984a55a | 4835 | rcu_read_lock(); |
de734831 | 4836 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
fe2d5395 | 4837 | sizeof(setclientid.sc_netid), "%s", |
d4d3c507 CL |
4838 | rpc_peeraddr2str(clp->cl_rpcclient, |
4839 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4840 | rcu_read_unlock(); |
4841 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4842 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4843 | clp->cl_ipaddr, port >> 8, port & 255); |
4844 | ||
6bbb4ae8 CL |
4845 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4846 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4847 | setclientid.sc_name_len, setclientid.sc_name); | |
4848 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4849 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4850 | dprintk("NFS reply setclientid: %d\n", status); |
4851 | return status; | |
1da177e4 LT |
4852 | } |
4853 | ||
6bbb4ae8 CL |
4854 | /** |
4855 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4856 | * @clp: state data structure | |
4857 | * @res: result of a previous SETCLIENTID | |
4858 | * @cred: RPC credential to use for this call | |
4859 | * | |
4860 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4861 | */ | |
fd954ae1 | 4862 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4863 | struct nfs4_setclientid_res *arg, |
4864 | struct rpc_cred *cred) | |
1da177e4 | 4865 | { |
1da177e4 LT |
4866 | struct rpc_message msg = { |
4867 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4868 | .rpc_argp = arg, |
286d7d6a | 4869 | .rpc_cred = cred, |
1da177e4 | 4870 | }; |
1da177e4 LT |
4871 | int status; |
4872 | ||
6bbb4ae8 CL |
4873 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4874 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4875 | clp->cl_clientid); | |
1bd714f2 | 4876 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4877 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4878 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4879 | return status; |
4880 | } | |
4881 | ||
fe650407 TM |
4882 | struct nfs4_delegreturndata { |
4883 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4884 | struct nfs4_delegreturnres res; |
fe650407 TM |
4885 | struct nfs_fh fh; |
4886 | nfs4_stateid stateid; | |
26e976a8 | 4887 | unsigned long timestamp; |
fa178f29 | 4888 | struct nfs_fattr fattr; |
fe650407 TM |
4889 | int rpc_status; |
4890 | }; | |
4891 | ||
fe650407 TM |
4892 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4893 | { | |
4894 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4895 | |
14516c3a TM |
4896 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4897 | return; | |
938e1010 | 4898 | |
ca8acf8d | 4899 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 RL |
4900 | switch (task->tk_status) { |
4901 | case -NFS4ERR_STALE_STATEID: | |
4902 | case -NFS4ERR_EXPIRED: | |
4903 | case 0: | |
fa178f29 | 4904 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4905 | break; |
4906 | default: | |
4907 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4908 | -EAGAIN) { | |
d00c5d43 | 4909 | rpc_restart_call_prepare(task); |
79708861 RL |
4910 | return; |
4911 | } | |
4912 | } | |
4913 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4914 | } |
4915 | ||
4916 | static void nfs4_delegreturn_release(void *calldata) | |
4917 | { | |
fe650407 TM |
4918 | kfree(calldata); |
4919 | } | |
4920 | ||
938e1010 AA |
4921 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
4922 | { | |
4923 | struct nfs4_delegreturndata *d_data; | |
4924 | ||
4925 | d_data = (struct nfs4_delegreturndata *)data; | |
4926 | ||
d9afbd1b TM |
4927 | nfs4_setup_sequence(d_data->res.server, |
4928 | &d_data->args.seq_args, | |
4929 | &d_data->res.seq_res, | |
4930 | task); | |
938e1010 | 4931 | } |
938e1010 | 4932 | |
c8d149f3 | 4933 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 4934 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
4935 | .rpc_call_done = nfs4_delegreturn_done, |
4936 | .rpc_release = nfs4_delegreturn_release, | |
4937 | }; | |
4938 | ||
e6f81075 | 4939 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4940 | { |
4941 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4942 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4943 | struct rpc_task *task; |
5138fde0 TM |
4944 | struct rpc_message msg = { |
4945 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4946 | .rpc_cred = cred, | |
4947 | }; | |
c970aa85 TM |
4948 | struct rpc_task_setup task_setup_data = { |
4949 | .rpc_client = server->client, | |
5138fde0 | 4950 | .rpc_message = &msg, |
c970aa85 TM |
4951 | .callback_ops = &nfs4_delegreturn_ops, |
4952 | .flags = RPC_TASK_ASYNC, | |
4953 | }; | |
e6f81075 | 4954 | int status = 0; |
fe650407 | 4955 | |
8535b2be | 4956 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4957 | if (data == NULL) |
4958 | return -ENOMEM; | |
a9c92d6b | 4959 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4960 | data->args.fhandle = &data->fh; |
4961 | data->args.stateid = &data->stateid; | |
9e907fec | 4962 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4963 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4964 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4965 | data->res.fattr = &data->fattr; |
4966 | data->res.server = server; | |
5138fde0 | 4967 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4968 | data->timestamp = jiffies; |
fe650407 TM |
4969 | data->rpc_status = 0; |
4970 | ||
c970aa85 | 4971 | task_setup_data.callback_data = data; |
1174dd1f TM |
4972 | msg.rpc_argp = &data->args; |
4973 | msg.rpc_resp = &data->res; | |
c970aa85 | 4974 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4975 | if (IS_ERR(task)) |
fe650407 | 4976 | return PTR_ERR(task); |
e6f81075 TM |
4977 | if (!issync) |
4978 | goto out; | |
fe650407 | 4979 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4980 | if (status != 0) |
4981 | goto out; | |
4982 | status = data->rpc_status; | |
e144cbcc TM |
4983 | if (status == 0) |
4984 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4985 | else | |
4986 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4987 | out: |
e6b3c4db | 4988 | rpc_put_task(task); |
fe650407 | 4989 | return status; |
1da177e4 LT |
4990 | } |
4991 | ||
e6f81075 | 4992 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4993 | { |
4994 | struct nfs_server *server = NFS_SERVER(inode); | |
4995 | struct nfs4_exception exception = { }; | |
4996 | int err; | |
4997 | do { | |
e6f81075 | 4998 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 4999 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5000 | switch (err) { |
5001 | case -NFS4ERR_STALE_STATEID: | |
5002 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5003 | case 0: |
5004 | return 0; | |
5005 | } | |
5006 | err = nfs4_handle_exception(server, err, &exception); | |
5007 | } while (exception.retry); | |
5008 | return err; | |
5009 | } | |
5010 | ||
5011 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5012 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5013 | ||
5014 | /* | |
5015 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5016 | */ | |
5017 | static unsigned long | |
5018 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5019 | { | |
416ad3c9 | 5020 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5021 | timeout <<= 1; |
5022 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5023 | return NFS4_LOCK_MAXTIMEOUT; | |
5024 | return timeout; | |
5025 | } | |
5026 | ||
1da177e4 LT |
5027 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5028 | { | |
5029 | struct inode *inode = state->inode; | |
5030 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5031 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5032 | struct nfs_lockt_args arg = { |
1da177e4 | 5033 | .fh = NFS_FH(inode), |
911d1aaf | 5034 | .fl = request, |
1da177e4 | 5035 | }; |
911d1aaf TM |
5036 | struct nfs_lockt_res res = { |
5037 | .denied = request, | |
1da177e4 LT |
5038 | }; |
5039 | struct rpc_message msg = { | |
5040 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5041 | .rpc_argp = &arg, | |
5042 | .rpc_resp = &res, | |
5043 | .rpc_cred = state->owner->so_cred, | |
5044 | }; | |
1da177e4 LT |
5045 | struct nfs4_lock_state *lsp; |
5046 | int status; | |
5047 | ||
911d1aaf | 5048 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5049 | status = nfs4_set_lock_state(state, request); |
5050 | if (status != 0) | |
5051 | goto out; | |
5052 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5053 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5054 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5055 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5056 | switch (status) { |
5057 | case 0: | |
5058 | request->fl_type = F_UNLCK; | |
5059 | break; | |
5060 | case -NFS4ERR_DENIED: | |
5061 | status = 0; | |
1da177e4 | 5062 | } |
70cc6487 | 5063 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 5064 | out: |
1da177e4 LT |
5065 | return status; |
5066 | } | |
5067 | ||
5068 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5069 | { | |
5070 | struct nfs4_exception exception = { }; | |
5071 | int err; | |
5072 | ||
5073 | do { | |
d1b748a5 TM |
5074 | err = _nfs4_proc_getlk(state, cmd, request); |
5075 | trace_nfs4_get_lock(request, state, cmd, err); | |
5076 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5077 | &exception); |
5078 | } while (exception.retry); | |
5079 | return err; | |
5080 | } | |
5081 | ||
5082 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5083 | { | |
5084 | int res = 0; | |
5085 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5086 | case FL_POSIX: | |
5087 | res = posix_lock_file_wait(file, fl); | |
5088 | break; | |
5089 | case FL_FLOCK: | |
5090 | res = flock_lock_file_wait(file, fl); | |
5091 | break; | |
5092 | default: | |
5093 | BUG(); | |
5094 | } | |
1da177e4 LT |
5095 | return res; |
5096 | } | |
5097 | ||
faf5f49c | 5098 | struct nfs4_unlockdata { |
911d1aaf TM |
5099 | struct nfs_locku_args arg; |
5100 | struct nfs_locku_res res; | |
faf5f49c TM |
5101 | struct nfs4_lock_state *lsp; |
5102 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5103 | struct file_lock fl; |
5104 | const struct nfs_server *server; | |
26e976a8 | 5105 | unsigned long timestamp; |
faf5f49c TM |
5106 | }; |
5107 | ||
911d1aaf TM |
5108 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5109 | struct nfs_open_context *ctx, | |
5110 | struct nfs4_lock_state *lsp, | |
5111 | struct nfs_seqid *seqid) | |
5112 | { | |
5113 | struct nfs4_unlockdata *p; | |
5114 | struct inode *inode = lsp->ls_state->inode; | |
5115 | ||
8535b2be | 5116 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5117 | if (p == NULL) |
5118 | return NULL; | |
5119 | p->arg.fh = NFS_FH(inode); | |
5120 | p->arg.fl = &p->fl; | |
5121 | p->arg.seqid = seqid; | |
c1d51931 | 5122 | p->res.seqid = seqid; |
911d1aaf TM |
5123 | p->arg.stateid = &lsp->ls_stateid; |
5124 | p->lsp = lsp; | |
5125 | atomic_inc(&lsp->ls_count); | |
5126 | /* Ensure we don't close file until we're done freeing locks! */ | |
5127 | p->ctx = get_nfs_open_context(ctx); | |
5128 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5129 | p->server = NFS_SERVER(inode); | |
5130 | return p; | |
5131 | } | |
5132 | ||
06f814a3 | 5133 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5134 | { |
963d8fe5 | 5135 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5136 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5137 | nfs4_put_lock_state(calldata->lsp); |
5138 | put_nfs_open_context(calldata->ctx); | |
5139 | kfree(calldata); | |
faf5f49c TM |
5140 | } |
5141 | ||
963d8fe5 | 5142 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5143 | { |
963d8fe5 | 5144 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5145 | |
14516c3a TM |
5146 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5147 | return; | |
faf5f49c TM |
5148 | switch (task->tk_status) { |
5149 | case 0: | |
f597c537 TM |
5150 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5151 | &calldata->res.stateid); | |
26e976a8 | 5152 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5153 | break; |
9e33bed5 TM |
5154 | case -NFS4ERR_BAD_STATEID: |
5155 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5156 | case -NFS4ERR_STALE_STATEID: |
5157 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5158 | break; |
5159 | default: | |
9e33bed5 | 5160 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5161 | rpc_restart_call_prepare(task); |
faf5f49c | 5162 | } |
2b1bc308 | 5163 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5164 | } |
5165 | ||
4ce70ada | 5166 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5167 | { |
4ce70ada | 5168 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5169 | |
911d1aaf | 5170 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5171 | goto out_wait; |
795a88c9 | 5172 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5173 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5174 | goto out_no_action; |
faf5f49c | 5175 | } |
26e976a8 | 5176 | calldata->timestamp = jiffies; |
035168ab | 5177 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5178 | &calldata->arg.seq_args, |
2240a9e2 TM |
5179 | &calldata->res.seq_res, |
5180 | task) != 0) | |
5181 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5182 | return; |
5183 | out_no_action: | |
5184 | task->tk_action = NULL; | |
5185 | out_wait: | |
5186 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5187 | } |
5188 | ||
963d8fe5 | 5189 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5190 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5191 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5192 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5193 | }; |
5194 | ||
a5d16a4d TM |
5195 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5196 | struct nfs_open_context *ctx, | |
5197 | struct nfs4_lock_state *lsp, | |
5198 | struct nfs_seqid *seqid) | |
5199 | { | |
5200 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5201 | struct rpc_message msg = { |
5202 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5203 | .rpc_cred = ctx->cred, | |
5204 | }; | |
c970aa85 TM |
5205 | struct rpc_task_setup task_setup_data = { |
5206 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5207 | .rpc_message = &msg, |
c970aa85 | 5208 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5209 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5210 | .flags = RPC_TASK_ASYNC, |
5211 | }; | |
a5d16a4d | 5212 | |
137d6aca FF |
5213 | /* Ensure this is an unlock - when canceling a lock, the |
5214 | * canceled lock is passed in, and it won't be an unlock. | |
5215 | */ | |
5216 | fl->fl_type = F_UNLCK; | |
5217 | ||
a5d16a4d TM |
5218 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5219 | if (data == NULL) { | |
5220 | nfs_free_seqid(seqid); | |
5221 | return ERR_PTR(-ENOMEM); | |
5222 | } | |
5223 | ||
a9c92d6b | 5224 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5225 | msg.rpc_argp = &data->arg; |
5226 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5227 | task_setup_data.callback_data = data; |
5228 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5229 | } |
5230 | ||
faf5f49c TM |
5231 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5232 | { | |
65b62a29 TM |
5233 | struct inode *inode = state->inode; |
5234 | struct nfs4_state_owner *sp = state->owner; | |
5235 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5236 | struct nfs_seqid *seqid; |
1da177e4 | 5237 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5238 | struct rpc_task *task; |
5239 | int status = 0; | |
536ff0f8 | 5240 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5241 | |
8d0a8a9d | 5242 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5243 | /* Unlock _before_ we do the RPC call */ |
5244 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5245 | /* Exclude nfs_delegation_claim_locks() */ |
5246 | mutex_lock(&sp->so_delegreturn_mutex); | |
5247 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5248 | down_read(&nfsi->rwsem); |
5249 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5250 | up_read(&nfsi->rwsem); | |
65b62a29 | 5251 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5252 | goto out; |
19e03c57 TM |
5253 | } |
5254 | up_read(&nfsi->rwsem); | |
65b62a29 | 5255 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5256 | if (status != 0) |
9b073574 TM |
5257 | goto out; |
5258 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5259 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5260 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5261 | goto out; | |
8535b2be | 5262 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5263 | status = -ENOMEM; |
911d1aaf | 5264 | if (seqid == NULL) |
9b073574 | 5265 | goto out; |
cd3758e3 | 5266 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5267 | status = PTR_ERR(task); |
5268 | if (IS_ERR(task)) | |
9b073574 | 5269 | goto out; |
a5d16a4d | 5270 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5271 | rpc_put_task(task); |
9b073574 | 5272 | out: |
536ff0f8 | 5273 | request->fl_flags = fl_flags; |
d1b748a5 | 5274 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5275 | return status; |
5276 | } | |
5277 | ||
a5d16a4d TM |
5278 | struct nfs4_lockdata { |
5279 | struct nfs_lock_args arg; | |
5280 | struct nfs_lock_res res; | |
5281 | struct nfs4_lock_state *lsp; | |
5282 | struct nfs_open_context *ctx; | |
5283 | struct file_lock fl; | |
26e976a8 | 5284 | unsigned long timestamp; |
a5d16a4d TM |
5285 | int rpc_status; |
5286 | int cancelled; | |
66179efe | 5287 | struct nfs_server *server; |
a5d16a4d TM |
5288 | }; |
5289 | ||
5290 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5291 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5292 | gfp_t gfp_mask) | |
1da177e4 | 5293 | { |
a5d16a4d TM |
5294 | struct nfs4_lockdata *p; |
5295 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5296 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5297 | |
8535b2be | 5298 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5299 | if (p == NULL) |
5300 | return NULL; | |
5301 | ||
5302 | p->arg.fh = NFS_FH(inode); | |
5303 | p->arg.fl = &p->fl; | |
8535b2be | 5304 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5305 | if (p->arg.open_seqid == NULL) |
5306 | goto out_free; | |
8535b2be | 5307 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5308 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5309 | goto out_free_seqid; |
a5d16a4d | 5310 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5311 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5312 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5313 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5314 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5315 | p->lsp = lsp; |
66179efe | 5316 | p->server = server; |
a5d16a4d TM |
5317 | atomic_inc(&lsp->ls_count); |
5318 | p->ctx = get_nfs_open_context(ctx); | |
5319 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5320 | return p; | |
2f74c0a0 TM |
5321 | out_free_seqid: |
5322 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5323 | out_free: |
5324 | kfree(p); | |
5325 | return NULL; | |
5326 | } | |
5327 | ||
5328 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5329 | { | |
5330 | struct nfs4_lockdata *data = calldata; | |
5331 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5332 | |
3110ff80 | 5333 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5334 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5335 | goto out_wait; |
a5d16a4d TM |
5336 | /* Do we need to do an open_to_lock_owner? */ |
5337 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5338 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5339 | goto out_release_lock_seqid; |
8fe72bac | 5340 | } |
8e472f33 | 5341 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5342 | data->arg.new_lock_owner = 1; |
c1d51931 | 5343 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5344 | } else |
5345 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5346 | if (!nfs4_valid_open_stateid(state)) { |
5347 | data->rpc_status = -EBADF; | |
5348 | task->tk_action = NULL; | |
5349 | goto out_release_open_seqid; | |
5350 | } | |
26e976a8 | 5351 | data->timestamp = jiffies; |
035168ab TM |
5352 | if (nfs4_setup_sequence(data->server, |
5353 | &data->arg.seq_args, | |
2240a9e2 | 5354 | &data->res.seq_res, |
d9afbd1b | 5355 | task) == 0) |
66179efe | 5356 | return; |
5d422301 | 5357 | out_release_open_seqid: |
2240a9e2 TM |
5358 | nfs_release_seqid(data->arg.open_seqid); |
5359 | out_release_lock_seqid: | |
5360 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5361 | out_wait: |
5362 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5363 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5364 | } |
5365 | ||
a5d16a4d TM |
5366 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5367 | { | |
5368 | struct nfs4_lockdata *data = calldata; | |
5369 | ||
3110ff80 | 5370 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5371 | |
14516c3a TM |
5372 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5373 | return; | |
66179efe | 5374 | |
a5d16a4d | 5375 | data->rpc_status = task->tk_status; |
a5d16a4d | 5376 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5377 | if (data->rpc_status == 0) |
5378 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5379 | else | |
5380 | goto out; | |
5381 | } | |
5382 | if (data->rpc_status == 0) { | |
f597c537 | 5383 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5384 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5385 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5386 | } |
a5d16a4d | 5387 | out: |
3110ff80 | 5388 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5389 | } |
5390 | ||
5391 | static void nfs4_lock_release(void *calldata) | |
5392 | { | |
5393 | struct nfs4_lockdata *data = calldata; | |
5394 | ||
3110ff80 | 5395 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5396 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5397 | if (data->cancelled != 0) { |
5398 | struct rpc_task *task; | |
5399 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5400 | data->arg.lock_seqid); | |
5401 | if (!IS_ERR(task)) | |
bf294b41 | 5402 | rpc_put_task_async(task); |
3110ff80 | 5403 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5404 | } else |
5405 | nfs_free_seqid(data->arg.lock_seqid); | |
5406 | nfs4_put_lock_state(data->lsp); | |
5407 | put_nfs_open_context(data->ctx); | |
5408 | kfree(data); | |
3110ff80 | 5409 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5410 | } |
5411 | ||
5412 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5413 | .rpc_call_prepare = nfs4_lock_prepare, | |
5414 | .rpc_call_done = nfs4_lock_done, | |
5415 | .rpc_release = nfs4_lock_release, | |
5416 | }; | |
5417 | ||
2bee72a6 TM |
5418 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5419 | { | |
2bee72a6 TM |
5420 | switch (error) { |
5421 | case -NFS4ERR_ADMIN_REVOKED: | |
5422 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5423 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5424 | if (new_lock_owner != 0 || |
795a88c9 | 5425 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5426 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5427 | break; |
5428 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5429 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5430 | case -NFS4ERR_EXPIRED: |
5431 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5432 | }; |
5433 | } | |
5434 | ||
afe6c27c | 5435 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5436 | { |
5437 | struct nfs4_lockdata *data; | |
5438 | struct rpc_task *task; | |
5138fde0 TM |
5439 | struct rpc_message msg = { |
5440 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5441 | .rpc_cred = state->owner->so_cred, | |
5442 | }; | |
c970aa85 TM |
5443 | struct rpc_task_setup task_setup_data = { |
5444 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5445 | .rpc_message = &msg, |
c970aa85 | 5446 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5447 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5448 | .flags = RPC_TASK_ASYNC, |
5449 | }; | |
a5d16a4d TM |
5450 | int ret; |
5451 | ||
3110ff80 | 5452 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5453 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5454 | fl->fl_u.nfs4_fl.owner, |
5455 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5456 | if (data == NULL) |
5457 | return -ENOMEM; | |
5458 | if (IS_SETLKW(cmd)) | |
5459 | data->arg.block = 1; | |
a9c92d6b | 5460 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5461 | msg.rpc_argp = &data->arg; |
5462 | msg.rpc_resp = &data->res; | |
c970aa85 | 5463 | task_setup_data.callback_data = data; |
8fe72bac TM |
5464 | if (recovery_type > NFS_LOCK_NEW) { |
5465 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5466 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5467 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5468 | } | |
c970aa85 | 5469 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5470 | if (IS_ERR(task)) |
a5d16a4d | 5471 | return PTR_ERR(task); |
a5d16a4d TM |
5472 | ret = nfs4_wait_for_completion_rpc_task(task); |
5473 | if (ret == 0) { | |
5474 | ret = data->rpc_status; | |
2bee72a6 TM |
5475 | if (ret) |
5476 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5477 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5478 | } else |
5479 | data->cancelled = 1; | |
e6b3c4db | 5480 | rpc_put_task(task); |
3110ff80 | 5481 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5482 | return ret; |
1da177e4 LT |
5483 | } |
5484 | ||
5485 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5486 | { | |
202b50dc | 5487 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5488 | struct nfs4_exception exception = { |
5489 | .inode = state->inode, | |
5490 | }; | |
202b50dc TM |
5491 | int err; |
5492 | ||
5493 | do { | |
42a2d13e TM |
5494 | /* Cache the lock if possible... */ |
5495 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5496 | return 0; | |
afe6c27c | 5497 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5498 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5499 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5500 | break; |
5501 | nfs4_handle_exception(server, err, &exception); | |
5502 | } while (exception.retry); | |
5503 | return err; | |
1da177e4 LT |
5504 | } |
5505 | ||
5506 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5507 | { | |
202b50dc | 5508 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5509 | struct nfs4_exception exception = { |
5510 | .inode = state->inode, | |
5511 | }; | |
202b50dc TM |
5512 | int err; |
5513 | ||
6bfc93ef TM |
5514 | err = nfs4_set_lock_state(state, request); |
5515 | if (err != 0) | |
5516 | return err; | |
202b50dc | 5517 | do { |
42a2d13e TM |
5518 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5519 | return 0; | |
afe6c27c | 5520 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5521 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5522 | switch (err) { |
5523 | default: | |
5524 | goto out; | |
5525 | case -NFS4ERR_GRACE: | |
5526 | case -NFS4ERR_DELAY: | |
5527 | nfs4_handle_exception(server, err, &exception); | |
5528 | err = 0; | |
5529 | } | |
202b50dc | 5530 | } while (exception.retry); |
a9ed2e25 | 5531 | out: |
202b50dc | 5532 | return err; |
1da177e4 LT |
5533 | } |
5534 | ||
f062eb6c | 5535 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5536 | /** |
5537 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5538 | * | |
5539 | * @state: NFSv4 state for an inode | |
5540 | * | |
5541 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5542 | * Otherwise a negative NFS4ERR value is returned. | |
5543 | */ | |
b01dd1d8 | 5544 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5545 | { |
eb64cf96 | 5546 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5547 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5548 | struct nfs_server *server = NFS_SERVER(state->inode); |
5549 | ||
b01dd1d8 | 5550 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5551 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5552 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5553 | ||
5554 | status = nfs41_test_stateid(server, | |
5555 | &lsp->ls_stateid, | |
5556 | cred); | |
08cb47fa | 5557 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5558 | if (status != NFS_OK) { |
3e60ffdd CL |
5559 | /* Free the stateid unless the server |
5560 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5561 | if (status != -NFS4ERR_BAD_STATEID) |
5562 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5563 | &lsp->ls_stateid, |
5564 | cred); | |
795a88c9 | 5565 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5566 | ret = status; |
5567 | } | |
5568 | } | |
5569 | }; | |
5570 | ||
5571 | return ret; | |
5572 | } | |
5573 | ||
5574 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5575 | { | |
5576 | int status = NFS_OK; | |
5577 | ||
5578 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5579 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5580 | if (status != NFS_OK) |
5581 | status = nfs4_lock_expired(state, request); | |
5582 | return status; | |
f062eb6c BS |
5583 | } |
5584 | #endif | |
5585 | ||
1da177e4 LT |
5586 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5587 | { | |
9a99af49 | 5588 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5589 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5590 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5591 | unsigned int seq; |
8e469ebd | 5592 | int status = -ENOLCK; |
1da177e4 | 5593 | |
8e469ebd TM |
5594 | if ((fl_flags & FL_POSIX) && |
5595 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5596 | goto out; | |
6bfc93ef | 5597 | /* Is this a delegated open? */ |
6bfc93ef TM |
5598 | status = nfs4_set_lock_state(state, request); |
5599 | if (status != 0) | |
5600 | goto out; | |
01c3b861 TM |
5601 | request->fl_flags |= FL_ACCESS; |
5602 | status = do_vfs_lock(request->fl_file, request); | |
5603 | if (status < 0) | |
5604 | goto out; | |
19e03c57 | 5605 | down_read(&nfsi->rwsem); |
01c3b861 | 5606 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5607 | /* Yes: cache locks! */ |
01c3b861 | 5608 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5609 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5610 | status = do_vfs_lock(request->fl_file, request); | |
5611 | goto out_unlock; | |
01c3b861 | 5612 | } |
9a99af49 TM |
5613 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5614 | up_read(&nfsi->rwsem); | |
afe6c27c | 5615 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5616 | if (status != 0) |
9a99af49 TM |
5617 | goto out; |
5618 | down_read(&nfsi->rwsem); | |
5619 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5620 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5621 | goto out_unlock; |
9a99af49 | 5622 | } |
6bfc93ef | 5623 | /* Note: we always want to sleep here! */ |
01c3b861 | 5624 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5625 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5626 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5627 | "manager!\n", __func__); | |
01c3b861 | 5628 | out_unlock: |
19e03c57 | 5629 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5630 | out: |
5631 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5632 | return status; |
5633 | } | |
5634 | ||
5635 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5636 | { | |
a1d0b5ee TM |
5637 | struct nfs4_exception exception = { |
5638 | .state = state, | |
05ffe24f | 5639 | .inode = state->inode, |
a1d0b5ee | 5640 | }; |
1da177e4 LT |
5641 | int err; |
5642 | ||
5643 | do { | |
965b5d67 | 5644 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5645 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5646 | if (err == -NFS4ERR_DENIED) |
5647 | err = -EAGAIN; | |
1da177e4 | 5648 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5649 | err, &exception); |
1da177e4 LT |
5650 | } while (exception.retry); |
5651 | return err; | |
5652 | } | |
5653 | ||
5654 | static int | |
5655 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5656 | { | |
5657 | struct nfs_open_context *ctx; | |
5658 | struct nfs4_state *state; | |
5659 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5660 | int status; | |
5661 | ||
5662 | /* verify open state */ | |
cd3758e3 | 5663 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5664 | state = ctx->state; |
5665 | ||
5666 | if (request->fl_start < 0 || request->fl_end < 0) | |
5667 | return -EINVAL; | |
5668 | ||
d953126a TM |
5669 | if (IS_GETLK(cmd)) { |
5670 | if (state != NULL) | |
5671 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5672 | return 0; | |
5673 | } | |
1da177e4 LT |
5674 | |
5675 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5676 | return -EINVAL; | |
5677 | ||
d953126a TM |
5678 | if (request->fl_type == F_UNLCK) { |
5679 | if (state != NULL) | |
5680 | return nfs4_proc_unlck(state, cmd, request); | |
5681 | return 0; | |
5682 | } | |
1da177e4 | 5683 | |
d953126a TM |
5684 | if (state == NULL) |
5685 | return -ENOLCK; | |
55725513 TM |
5686 | /* |
5687 | * Don't rely on the VFS having checked the file open mode, | |
5688 | * since it won't do this for flock() locks. | |
5689 | */ | |
f44106e2 | 5690 | switch (request->fl_type) { |
55725513 TM |
5691 | case F_RDLCK: |
5692 | if (!(filp->f_mode & FMODE_READ)) | |
5693 | return -EBADF; | |
5694 | break; | |
5695 | case F_WRLCK: | |
5696 | if (!(filp->f_mode & FMODE_WRITE)) | |
5697 | return -EBADF; | |
5698 | } | |
5699 | ||
1da177e4 LT |
5700 | do { |
5701 | status = nfs4_proc_setlk(state, cmd, request); | |
5702 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5703 | break; | |
5704 | timeout = nfs4_set_lock_task_retry(timeout); | |
5705 | status = -ERESTARTSYS; | |
5706 | if (signalled()) | |
5707 | break; | |
5708 | } while(status < 0); | |
1da177e4 LT |
5709 | return status; |
5710 | } | |
5711 | ||
db4f2e63 | 5712 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5713 | { |
5714 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5715 | int err; |
5716 | ||
5717 | err = nfs4_set_lock_state(state, fl); | |
5718 | if (err != 0) | |
db4f2e63 | 5719 | return err; |
4a706fa0 | 5720 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5721 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5722 | } |
6b3b5496 | 5723 | |
cf470c3e TM |
5724 | struct nfs_release_lockowner_data { |
5725 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5726 | struct nfs_server *server; |
cf470c3e | 5727 | struct nfs_release_lockowner_args args; |
fbd4bfd1 CL |
5728 | struct nfs4_sequence_args seq_args; |
5729 | struct nfs4_sequence_res seq_res; | |
cf470c3e TM |
5730 | }; |
5731 | ||
fbd4bfd1 CL |
5732 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
5733 | { | |
5734 | struct nfs_release_lockowner_data *data = calldata; | |
5735 | nfs40_setup_sequence(data->server, | |
5736 | &data->seq_args, &data->seq_res, task); | |
5737 | } | |
5738 | ||
5739 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
5740 | { | |
5741 | struct nfs_release_lockowner_data *data = calldata; | |
5742 | nfs40_sequence_done(task, &data->seq_res); | |
5743 | } | |
5744 | ||
d3c7b7cc TM |
5745 | static void nfs4_release_lockowner_release(void *calldata) |
5746 | { | |
cf470c3e | 5747 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5748 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5749 | kfree(calldata); |
5750 | } | |
5751 | ||
17280175 | 5752 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
5753 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
5754 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
5755 | .rpc_release = nfs4_release_lockowner_release, |
5756 | }; | |
5757 | ||
c8b2d0bf | 5758 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5759 | { |
cf470c3e | 5760 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5761 | struct rpc_message msg = { |
5762 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5763 | }; | |
5764 | ||
5765 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e | 5766 | return -EINVAL; |
fbd4bfd1 | 5767 | |
cf470c3e TM |
5768 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5769 | if (!data) | |
5770 | return -ENOMEM; | |
fbd4bfd1 | 5771 | nfs4_init_sequence(&data->seq_args, &data->seq_res, 0); |
cf470c3e | 5772 | data->lsp = lsp; |
5ae67c4f | 5773 | data->server = server; |
cf470c3e TM |
5774 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5775 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5776 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 5777 | |
cf470c3e TM |
5778 | msg.rpc_argp = &data->args; |
5779 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5780 | return 0; | |
d3c7b7cc TM |
5781 | } |
5782 | ||
aa1870af BF |
5783 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5784 | ||
64c2ce8b AK |
5785 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5786 | const void *buf, size_t buflen, | |
5787 | int flags, int type) | |
6b3b5496 | 5788 | { |
64c2ce8b AK |
5789 | if (strcmp(key, "") != 0) |
5790 | return -EINVAL; | |
4b580ee3 | 5791 | |
64c2ce8b | 5792 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5793 | } |
5794 | ||
64c2ce8b AK |
5795 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5796 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5797 | { |
64c2ce8b AK |
5798 | if (strcmp(key, "") != 0) |
5799 | return -EINVAL; | |
aa1870af | 5800 | |
64c2ce8b | 5801 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5802 | } |
5803 | ||
64c2ce8b AK |
5804 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5805 | size_t list_len, const char *name, | |
5806 | size_t name_len, int type) | |
6b3b5496 | 5807 | { |
64c2ce8b | 5808 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5809 | |
096455a2 BF |
5810 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5811 | return 0; | |
64c2ce8b AK |
5812 | |
5813 | if (list && len <= list_len) | |
5814 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5815 | return len; |
6b3b5496 BF |
5816 | } |
5817 | ||
c9bccef6 DQ |
5818 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5819 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5820 | { | |
5821 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5822 | } | |
5823 | ||
5824 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5825 | const void *buf, size_t buflen, | |
5826 | int flags, int type) | |
5827 | { | |
5828 | if (security_ismaclabel(key)) | |
5829 | return nfs4_set_security_label(dentry, buf, buflen); | |
5830 | ||
5831 | return -EOPNOTSUPP; | |
5832 | } | |
5833 | ||
5834 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5835 | void *buf, size_t buflen, int type) | |
5836 | { | |
5837 | if (security_ismaclabel(key)) | |
5838 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5839 | return -EOPNOTSUPP; | |
5840 | } | |
5841 | ||
5842 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5843 | size_t list_len, const char *name, | |
5844 | size_t name_len, int type) | |
5845 | { | |
5846 | size_t len = 0; | |
5847 | ||
5848 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5849 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5850 | if (list && len <= list_len) | |
5851 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5852 | } | |
5853 | return len; | |
5854 | } | |
5855 | ||
5856 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5857 | .prefix = XATTR_SECURITY_PREFIX, | |
5858 | .list = nfs4_xattr_list_nfs4_label, | |
5859 | .get = nfs4_xattr_get_nfs4_label, | |
5860 | .set = nfs4_xattr_set_nfs4_label, | |
5861 | }; | |
5862 | #endif | |
5863 | ||
5864 | ||
533eb461 AA |
5865 | /* |
5866 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5867 | */ | |
69aaaae1 TM |
5868 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5869 | { | |
533eb461 AA |
5870 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5871 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5872 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5873 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5874 | return; |
5875 | ||
5876 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5877 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5878 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5879 | fattr->nlink = 2; | |
5880 | } | |
5881 | ||
f05d147f BS |
5882 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5883 | const struct qstr *name, | |
5884 | struct nfs4_fs_locations *fs_locations, | |
5885 | struct page *page) | |
683b57b4 TM |
5886 | { |
5887 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5888 | u32 bitmask[3] = { |
361e624f | 5889 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5890 | }; |
5891 | struct nfs4_fs_locations_arg args = { | |
5892 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5893 | .name = name, |
683b57b4 TM |
5894 | .page = page, |
5895 | .bitmask = bitmask, | |
5896 | }; | |
22958463 BH |
5897 | struct nfs4_fs_locations_res res = { |
5898 | .fs_locations = fs_locations, | |
5899 | }; | |
683b57b4 TM |
5900 | struct rpc_message msg = { |
5901 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5902 | .rpc_argp = &args, | |
22958463 | 5903 | .rpc_resp = &res, |
683b57b4 TM |
5904 | }; |
5905 | int status; | |
5906 | ||
3110ff80 | 5907 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5908 | |
5909 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5910 | * is not supported */ | |
5911 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5912 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5913 | else | |
5914 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5915 | ||
c228fd3a | 5916 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5917 | fs_locations->server = server; |
830b8e33 | 5918 | fs_locations->nlocations = 0; |
f05d147f | 5919 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5920 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5921 | return status; |
5922 | } | |
5923 | ||
f05d147f BS |
5924 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5925 | const struct qstr *name, | |
5926 | struct nfs4_fs_locations *fs_locations, | |
5927 | struct page *page) | |
db0a9593 BS |
5928 | { |
5929 | struct nfs4_exception exception = { }; | |
5930 | int err; | |
5931 | do { | |
078ea3df TM |
5932 | err = _nfs4_proc_fs_locations(client, dir, name, |
5933 | fs_locations, page); | |
5934 | trace_nfs4_get_fs_locations(dir, name, err); | |
5935 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
5936 | &exception); |
5937 | } while (exception.retry); | |
5938 | return err; | |
5939 | } | |
5940 | ||
5ec16a85 | 5941 | /** |
a5250def WAA |
5942 | * If 'use_integrity' is true and the state managment nfs_client |
5943 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
5944 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
5945 | * Considerations sections. Otherwise, just use the user cred with the | |
5946 | * filesystem's rpc_client. | |
5ec16a85 | 5947 | */ |
a5250def | 5948 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
5949 | { |
5950 | int status; | |
5951 | struct nfs4_secinfo_arg args = { | |
5952 | .dir_fh = NFS_FH(dir), | |
5953 | .name = name, | |
5954 | }; | |
5955 | struct nfs4_secinfo_res res = { | |
5956 | .flavors = flavors, | |
5957 | }; | |
5958 | struct rpc_message msg = { | |
5959 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5960 | .rpc_argp = &args, | |
5961 | .rpc_resp = &res, | |
5962 | }; | |
a5250def WAA |
5963 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
5964 | ||
5965 | if (use_integrity) { | |
5966 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
5967 | msg.rpc_cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); | |
5968 | } | |
5a5ea0d4 BS |
5969 | |
5970 | dprintk("NFS call secinfo %s\n", name->name); | |
a5250def WAA |
5971 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
5972 | &res.seq_res, 0); | |
5a5ea0d4 | 5973 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def WAA |
5974 | |
5975 | if (msg.rpc_cred) | |
5976 | put_rpccred(msg.rpc_cred); | |
5977 | ||
5a5ea0d4 BS |
5978 | return status; |
5979 | } | |
5980 | ||
72de53ec BS |
5981 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5982 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5983 | { |
5984 | struct nfs4_exception exception = { }; | |
5985 | int err; | |
5986 | do { | |
a5250def WAA |
5987 | err = -NFS4ERR_WRONGSEC; |
5988 | ||
5989 | /* try to use integrity protection with machine cred */ | |
5990 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
5991 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
5992 | ||
5993 | /* | |
5994 | * if unable to use integrity protection, or SECINFO with | |
5995 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
5996 | * disallowed by spec, but exists in deployed servers) use | |
5997 | * the current filesystem's rpc_client and the user cred. | |
5998 | */ | |
5999 | if (err == -NFS4ERR_WRONGSEC) | |
6000 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6001 | ||
078ea3df TM |
6002 | trace_nfs4_secinfo(dir, name, err); |
6003 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6004 | &exception); |
6005 | } while (exception.retry); | |
6006 | return err; | |
6007 | } | |
6008 | ||
557134a3 | 6009 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6010 | /* |
6011 | * Check the exchange flags returned by the server for invalid flags, having | |
6012 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6013 | * DS flags set. | |
6014 | */ | |
6015 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6016 | { | |
6017 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6018 | goto out_inval; | |
6019 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6020 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6021 | goto out_inval; | |
6022 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6023 | goto out_inval; | |
6024 | return NFS_OK; | |
6025 | out_inval: | |
6026 | return -NFS4ERR_INVAL; | |
6027 | } | |
6028 | ||
78fe0f41 | 6029 | static bool |
79d4e1f0 CL |
6030 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6031 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6032 | { |
6033 | if (a->server_scope_sz == b->server_scope_sz && | |
6034 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6035 | return true; | |
6036 | ||
6037 | return false; | |
6038 | } | |
6039 | ||
7c44f1ae WAA |
6040 | /* |
6041 | * nfs4_proc_bind_conn_to_session() | |
6042 | * | |
6043 | * The 4.1 client currently uses the same TCP connection for the | |
6044 | * fore and backchannel. | |
6045 | */ | |
2cf047c9 | 6046 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6047 | { |
6048 | int status; | |
6049 | struct nfs41_bind_conn_to_session_res res; | |
6050 | struct rpc_message msg = { | |
6051 | .rpc_proc = | |
6052 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6053 | .rpc_argp = clp, | |
6054 | .rpc_resp = &res, | |
2cf047c9 | 6055 | .rpc_cred = cred, |
7c44f1ae WAA |
6056 | }; |
6057 | ||
6058 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6059 | |
6060 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6061 | if (unlikely(res.session == NULL)) { | |
6062 | status = -ENOMEM; | |
6063 | goto out; | |
6064 | } | |
6065 | ||
6066 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6067 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6068 | if (status == 0) { |
6069 | if (memcmp(res.session->sess_id.data, | |
6070 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6071 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6072 | status = -EIO; | |
6073 | goto out_session; | |
6074 | } | |
6075 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6076 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6077 | __func__); | |
6078 | status = -EIO; | |
6079 | goto out_session; | |
6080 | } | |
6081 | if (res.use_conn_in_rdma_mode) { | |
6082 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6083 | __func__); | |
6084 | status = -EIO; | |
6085 | goto out_session; | |
6086 | } | |
6087 | } | |
6088 | out_session: | |
6089 | kfree(res.session); | |
6090 | out: | |
6091 | dprintk("<-- %s status= %d\n", __func__, status); | |
6092 | return status; | |
6093 | } | |
6094 | ||
99fe60d0 BH |
6095 | /* |
6096 | * nfs4_proc_exchange_id() | |
6097 | * | |
6bbb4ae8 CL |
6098 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
6099 | * | |
99fe60d0 BH |
6100 | * Since the clientid has expired, all compounds using sessions |
6101 | * associated with the stale clientid will be returning | |
6102 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6103 | * be in some phase of session reset. | |
6104 | */ | |
4d643d1d | 6105 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
6106 | { |
6107 | nfs4_verifier verifier; | |
6108 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6109 | .verifier = &verifier, |
99fe60d0 | 6110 | .client = clp, |
4f0b429d TM |
6111 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
6112 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
6113 | }; |
6114 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6115 | 0 |
99fe60d0 BH |
6116 | }; |
6117 | int status; | |
6118 | struct rpc_message msg = { | |
6119 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6120 | .rpc_argp = &args, | |
6121 | .rpc_resp = &res, | |
6122 | .rpc_cred = cred, | |
6123 | }; | |
99fe60d0 | 6124 | |
f092075d | 6125 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6126 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6127 | sizeof(args.id)); | |
6bbb4ae8 CL |
6128 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6129 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6130 | args.id_len, args.id); | |
99fe60d0 | 6131 | |
acdeb69d | 6132 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6133 | GFP_NOFS); |
acdeb69d | 6134 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6135 | status = -ENOMEM; |
6136 | goto out; | |
6137 | } | |
78fe0f41 | 6138 | |
79d4e1f0 | 6139 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6140 | GFP_NOFS); |
177313f1 | 6141 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6142 | status = -ENOMEM; |
acdeb69d | 6143 | goto out_server_owner; |
abe9a6d5 | 6144 | } |
78fe0f41 | 6145 | |
bbafffd2 | 6146 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6147 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6148 | status = -ENOMEM; |
6149 | goto out_server_scope; | |
6150 | } | |
6151 | ||
1bd714f2 | 6152 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6153 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6154 | if (status == 0) |
32b01310 | 6155 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6156 | |
acdeb69d | 6157 | if (status == 0) { |
32b01310 TM |
6158 | clp->cl_clientid = res.clientid; |
6159 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6160 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6161 | clp->cl_seqid = res.seqid; | |
6162 | ||
acdeb69d CL |
6163 | kfree(clp->cl_serverowner); |
6164 | clp->cl_serverowner = res.server_owner; | |
6165 | res.server_owner = NULL; | |
78fe0f41 | 6166 | |
7d2ed9ac | 6167 | /* use the most recent implementation id */ |
59155546 CL |
6168 | kfree(clp->cl_implid); |
6169 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6170 | |
177313f1 | 6171 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6172 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6173 | res.server_scope)) { |
6174 | dprintk("%s: server_scope mismatch detected\n", | |
6175 | __func__); | |
6176 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6177 | kfree(clp->cl_serverscope); |
6178 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6179 | } |
6180 | ||
177313f1 | 6181 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6182 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6183 | goto out; |
6184 | } | |
32b01310 TM |
6185 | } else |
6186 | kfree(res.impl_id); | |
7d2ed9ac | 6187 | |
acdeb69d CL |
6188 | out_server_owner: |
6189 | kfree(res.server_owner); | |
7d2ed9ac | 6190 | out_server_scope: |
abe9a6d5 WAA |
6191 | kfree(res.server_scope); |
6192 | out: | |
177313f1 | 6193 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6194 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6195 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6196 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6197 | clp->cl_implid->date.seconds, |
6198 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6199 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6200 | return status; |
6201 | } | |
6202 | ||
66245539 TM |
6203 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6204 | struct rpc_cred *cred) | |
6205 | { | |
6206 | struct rpc_message msg = { | |
6207 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6208 | .rpc_argp = clp, | |
6209 | .rpc_cred = cred, | |
6210 | }; | |
6211 | int status; | |
6212 | ||
6213 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6214 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6215 | if (status) |
02c67525 | 6216 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6217 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6218 | return status; | |
6219 | } | |
6220 | ||
6221 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6222 | struct rpc_cred *cred) | |
6223 | { | |
6224 | unsigned int loop; | |
6225 | int ret; | |
6226 | ||
6227 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6228 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6229 | switch (ret) { | |
6230 | case -NFS4ERR_DELAY: | |
6231 | case -NFS4ERR_CLIENTID_BUSY: | |
6232 | ssleep(1); | |
6233 | break; | |
6234 | default: | |
6235 | return ret; | |
6236 | } | |
6237 | } | |
6238 | return 0; | |
6239 | } | |
6240 | ||
6241 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6242 | { | |
6243 | struct rpc_cred *cred; | |
6244 | int ret = 0; | |
6245 | ||
6246 | if (clp->cl_mvops->minor_version < 1) | |
6247 | goto out; | |
6248 | if (clp->cl_exchange_flags == 0) | |
6249 | goto out; | |
05f4c350 CL |
6250 | if (clp->cl_preserve_clid) |
6251 | goto out; | |
73d8bde5 | 6252 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6253 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6254 | if (cred) | |
6255 | put_rpccred(cred); | |
6256 | switch (ret) { | |
6257 | case 0: | |
6258 | case -NFS4ERR_STALE_CLIENTID: | |
6259 | clp->cl_exchange_flags = 0; | |
6260 | } | |
6261 | out: | |
6262 | return ret; | |
6263 | } | |
6264 | ||
2050f0cc AA |
6265 | struct nfs4_get_lease_time_data { |
6266 | struct nfs4_get_lease_time_args *args; | |
6267 | struct nfs4_get_lease_time_res *res; | |
6268 | struct nfs_client *clp; | |
6269 | }; | |
6270 | ||
6271 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6272 | void *calldata) | |
6273 | { | |
2050f0cc AA |
6274 | struct nfs4_get_lease_time_data *data = |
6275 | (struct nfs4_get_lease_time_data *)calldata; | |
6276 | ||
6277 | dprintk("--> %s\n", __func__); | |
6278 | /* just setup sequence, do not trigger session recovery | |
6279 | since we're invoked within one */ | |
d9afbd1b TM |
6280 | nfs41_setup_sequence(data->clp->cl_session, |
6281 | &data->args->la_seq_args, | |
6282 | &data->res->lr_seq_res, | |
6283 | task); | |
2050f0cc AA |
6284 | dprintk("<-- %s\n", __func__); |
6285 | } | |
6286 | ||
6287 | /* | |
6288 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6289 | * from sequence operation or clientid errors. | |
6290 | */ | |
6291 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6292 | { | |
6293 | struct nfs4_get_lease_time_data *data = | |
6294 | (struct nfs4_get_lease_time_data *)calldata; | |
6295 | ||
6296 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6297 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6298 | return; | |
2050f0cc AA |
6299 | switch (task->tk_status) { |
6300 | case -NFS4ERR_DELAY: | |
6301 | case -NFS4ERR_GRACE: | |
6302 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6303 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6304 | task->tk_status = 0; | |
a8a4ae3a AA |
6305 | /* fall through */ |
6306 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6307 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6308 | return; |
6309 | } | |
2050f0cc AA |
6310 | dprintk("<-- %s\n", __func__); |
6311 | } | |
6312 | ||
17280175 | 6313 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6314 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6315 | .rpc_call_done = nfs4_get_lease_time_done, | |
6316 | }; | |
6317 | ||
6318 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6319 | { | |
6320 | struct rpc_task *task; | |
6321 | struct nfs4_get_lease_time_args args; | |
6322 | struct nfs4_get_lease_time_res res = { | |
6323 | .lr_fsinfo = fsinfo, | |
6324 | }; | |
6325 | struct nfs4_get_lease_time_data data = { | |
6326 | .args = &args, | |
6327 | .res = &res, | |
6328 | .clp = clp, | |
6329 | }; | |
6330 | struct rpc_message msg = { | |
6331 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6332 | .rpc_argp = &args, | |
6333 | .rpc_resp = &res, | |
6334 | }; | |
6335 | struct rpc_task_setup task_setup = { | |
6336 | .rpc_client = clp->cl_rpcclient, | |
6337 | .rpc_message = &msg, | |
6338 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6339 | .callback_data = &data, |
6340 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6341 | }; |
6342 | int status; | |
6343 | ||
a9c92d6b | 6344 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6345 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6346 | dprintk("--> %s\n", __func__); |
6347 | task = rpc_run_task(&task_setup); | |
6348 | ||
6349 | if (IS_ERR(task)) | |
6350 | status = PTR_ERR(task); | |
6351 | else { | |
6352 | status = task->tk_status; | |
6353 | rpc_put_task(task); | |
6354 | } | |
6355 | dprintk("<-- %s return %d\n", __func__, status); | |
6356 | ||
6357 | return status; | |
6358 | } | |
6359 | ||
fc931582 AA |
6360 | /* |
6361 | * Initialize the values to be used by the client in CREATE_SESSION | |
6362 | * If nfs4_init_session set the fore channel request and response sizes, | |
6363 | * use them. | |
6364 | * | |
6365 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6366 | * always set csa_cachethis to FALSE because the current implementation | |
6367 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6368 | */ | |
6369 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6370 | { | |
18aad3d5 AA |
6371 | unsigned int max_rqst_sz, max_resp_sz; |
6372 | ||
6373 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6374 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6375 | |
fc931582 | 6376 | /* Fore channel attributes */ |
18aad3d5 AA |
6377 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6378 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6379 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6380 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6381 | |
6382 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6383 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6384 | __func__, |
6385 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6386 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6387 | |
6388 | /* Back channel attributes */ | |
fc931582 AA |
6389 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6390 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6391 | args->bc_attrs.max_resp_sz_cached = 0; | |
6392 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6393 | args->bc_attrs.max_reqs = 1; | |
6394 | ||
6395 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6396 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6397 | __func__, | |
6398 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6399 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6400 | args->bc_attrs.max_reqs); | |
6401 | } | |
6402 | ||
43c2e885 | 6403 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6404 | { |
43c2e885 BF |
6405 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6406 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6407 | ||
43c2e885 BF |
6408 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6409 | return -EINVAL; | |
6410 | /* | |
6411 | * Our requested max_ops is the minimum we need; we're not | |
6412 | * prepared to break up compounds into smaller pieces than that. | |
6413 | * So, no point even trying to continue if the server won't | |
6414 | * cooperate: | |
6415 | */ | |
6416 | if (rcvd->max_ops < sent->max_ops) | |
6417 | return -EINVAL; | |
6418 | if (rcvd->max_reqs == 0) | |
6419 | return -EINVAL; | |
b4b9a0c1 VG |
6420 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6421 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 6422 | return 0; |
8d35301d AA |
6423 | } |
6424 | ||
43c2e885 BF |
6425 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
6426 | { | |
6427 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
6428 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 6429 | |
43c2e885 BF |
6430 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
6431 | return -EINVAL; | |
6432 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
6433 | return -EINVAL; | |
6434 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
6435 | return -EINVAL; | |
6436 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 6437 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 6438 | return -EINVAL; |
b4b9a0c1 | 6439 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
6440 | return -EINVAL; |
6441 | return 0; | |
6442 | } | |
8d35301d | 6443 | |
8d35301d AA |
6444 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6445 | struct nfs4_session *session) | |
6446 | { | |
43c2e885 | 6447 | int ret; |
8d35301d | 6448 | |
43c2e885 BF |
6449 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6450 | if (ret) | |
6451 | return ret; | |
6452 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6453 | } |
6454 | ||
848f5bda TM |
6455 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6456 | struct rpc_cred *cred) | |
fc931582 AA |
6457 | { |
6458 | struct nfs4_session *session = clp->cl_session; | |
6459 | struct nfs41_create_session_args args = { | |
6460 | .client = clp, | |
6461 | .cb_program = NFS4_CALLBACK, | |
6462 | }; | |
6463 | struct nfs41_create_session_res res = { | |
6464 | .client = clp, | |
6465 | }; | |
6466 | struct rpc_message msg = { | |
6467 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6468 | .rpc_argp = &args, | |
6469 | .rpc_resp = &res, | |
848f5bda | 6470 | .rpc_cred = cred, |
fc931582 AA |
6471 | }; |
6472 | int status; | |
6473 | ||
6474 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6475 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6476 | |
1bd714f2 | 6477 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6478 | trace_nfs4_create_session(clp, status); |
fc931582 | 6479 | |
43095d39 | 6480 | if (!status) { |
8d35301d AA |
6481 | /* Verify the session's negotiated channel_attrs values */ |
6482 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6483 | /* Increment the clientid slot sequence id */ |
6484 | clp->cl_seqid++; | |
6485 | } | |
6486 | ||
6487 | return status; | |
6488 | } | |
6489 | ||
6490 | /* | |
6491 | * Issues a CREATE_SESSION operation to the server. | |
6492 | * It is the responsibility of the caller to verify the session is | |
6493 | * expired before calling this routine. | |
6494 | */ | |
848f5bda | 6495 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6496 | { |
6497 | int status; | |
6498 | unsigned *ptr; | |
fc931582 AA |
6499 | struct nfs4_session *session = clp->cl_session; |
6500 | ||
6501 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6502 | ||
848f5bda | 6503 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6504 | if (status) |
6505 | goto out; | |
6506 | ||
aacd5537 AA |
6507 | /* Init or reset the session slot tables */ |
6508 | status = nfs4_setup_session_slot_tables(session); | |
6509 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6510 | if (status) |
6511 | goto out; | |
6512 | ||
6513 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6514 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6515 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6516 | out: |
6517 | dprintk("<-- %s\n", __func__); | |
6518 | return status; | |
6519 | } | |
6520 | ||
0f3e66c6 AA |
6521 | /* |
6522 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6523 | * The caller must serialize access to this routine. | |
6524 | */ | |
848f5bda TM |
6525 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6526 | struct rpc_cred *cred) | |
0f3e66c6 | 6527 | { |
848f5bda TM |
6528 | struct rpc_message msg = { |
6529 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6530 | .rpc_argp = session, | |
6531 | .rpc_cred = cred, | |
6532 | }; | |
0f3e66c6 | 6533 | int status = 0; |
0f3e66c6 AA |
6534 | |
6535 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6536 | ||
6537 | /* session is still being setup */ | |
6538 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6539 | return status; | |
6540 | ||
1bd714f2 | 6541 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6542 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
6543 | |
6544 | if (status) | |
08106ac7 | 6545 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6546 | "Session has been destroyed regardless...\n", status); |
6547 | ||
6548 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6549 | return status; | |
6550 | } | |
6551 | ||
fc01cea9 AA |
6552 | /* |
6553 | * Renew the cl_session lease. | |
6554 | */ | |
d5f8d3fe TM |
6555 | struct nfs4_sequence_data { |
6556 | struct nfs_client *clp; | |
6557 | struct nfs4_sequence_args args; | |
6558 | struct nfs4_sequence_res res; | |
6559 | }; | |
6560 | ||
dc96aef9 AB |
6561 | static void nfs41_sequence_release(void *data) |
6562 | { | |
d5f8d3fe TM |
6563 | struct nfs4_sequence_data *calldata = data; |
6564 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6565 | |
7135840f AB |
6566 | if (atomic_read(&clp->cl_count) > 1) |
6567 | nfs4_schedule_state_renewal(clp); | |
6568 | nfs_put_client(clp); | |
d5f8d3fe | 6569 | kfree(calldata); |
dc96aef9 AB |
6570 | } |
6571 | ||
aa5190d0 TM |
6572 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6573 | { | |
6574 | switch(task->tk_status) { | |
6575 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6576 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6577 | return -EAGAIN; | |
6578 | default: | |
0400a6b0 | 6579 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6580 | } |
6581 | return 0; | |
6582 | } | |
6583 | ||
dc96aef9 | 6584 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6585 | { |
d5f8d3fe TM |
6586 | struct nfs4_sequence_data *calldata = data; |
6587 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6588 | |
14516c3a TM |
6589 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6590 | return; | |
fc01cea9 | 6591 | |
c6d01c6f | 6592 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
6593 | if (task->tk_status < 0) { |
6594 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6595 | if (atomic_read(&clp->cl_count) == 1) |
6596 | goto out; | |
fc01cea9 | 6597 | |
aa5190d0 TM |
6598 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6599 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6600 | return; |
6601 | } | |
6602 | } | |
fc01cea9 | 6603 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6604 | out: |
fc01cea9 AA |
6605 | dprintk("<-- %s\n", __func__); |
6606 | } | |
6607 | ||
6608 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6609 | { | |
d5f8d3fe TM |
6610 | struct nfs4_sequence_data *calldata = data; |
6611 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6612 | struct nfs4_sequence_args *args; |
6613 | struct nfs4_sequence_res *res; | |
6614 | ||
fc01cea9 AA |
6615 | args = task->tk_msg.rpc_argp; |
6616 | res = task->tk_msg.rpc_resp; | |
6617 | ||
d9afbd1b | 6618 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6619 | } |
6620 | ||
6621 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6622 | .rpc_call_done = nfs41_sequence_call_done, | |
6623 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6624 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6625 | }; |
6626 | ||
8fe72bac TM |
6627 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6628 | struct rpc_cred *cred, | |
6629 | bool is_privileged) | |
fc01cea9 | 6630 | { |
d5f8d3fe | 6631 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6632 | struct rpc_message msg = { |
6633 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6634 | .rpc_cred = cred, | |
6635 | }; | |
71ac6da9 TM |
6636 | struct rpc_task_setup task_setup_data = { |
6637 | .rpc_client = clp->cl_rpcclient, | |
6638 | .rpc_message = &msg, | |
8fe72bac | 6639 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6640 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6641 | }; |
fc01cea9 | 6642 | |
7135840f | 6643 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6644 | return ERR_PTR(-EIO); |
dfb4f309 | 6645 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6646 | if (calldata == NULL) { |
7135840f | 6647 | nfs_put_client(clp); |
71ac6da9 | 6648 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6649 | } |
a9c92d6b | 6650 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6651 | if (is_privileged) |
6652 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6653 | msg.rpc_argp = &calldata->args; |
6654 | msg.rpc_resp = &calldata->res; | |
6655 | calldata->clp = clp; | |
71ac6da9 | 6656 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6657 | |
71ac6da9 TM |
6658 | return rpc_run_task(&task_setup_data); |
6659 | } | |
6660 | ||
2f60ea6b | 6661 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6662 | { |
6663 | struct rpc_task *task; | |
6664 | int ret = 0; | |
6665 | ||
2f60ea6b TM |
6666 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6667 | return 0; | |
8fe72bac | 6668 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6669 | if (IS_ERR(task)) |
6670 | ret = PTR_ERR(task); | |
6671 | else | |
bf294b41 | 6672 | rpc_put_task_async(task); |
71ac6da9 TM |
6673 | dprintk("<-- %s status=%d\n", __func__, ret); |
6674 | return ret; | |
6675 | } | |
6676 | ||
6677 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6678 | { | |
6679 | struct rpc_task *task; | |
6680 | int ret; | |
6681 | ||
8fe72bac | 6682 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6683 | if (IS_ERR(task)) { |
6684 | ret = PTR_ERR(task); | |
6685 | goto out; | |
6686 | } | |
6687 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6688 | if (!ret) { |
6689 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6690 | ||
6691 | if (task->tk_status == 0) | |
6692 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6693 | ret = task->tk_status; |
b4410c2f | 6694 | } |
71ac6da9 TM |
6695 | rpc_put_task(task); |
6696 | out: | |
6697 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6698 | return ret; | |
fc01cea9 AA |
6699 | } |
6700 | ||
fce5c838 RL |
6701 | struct nfs4_reclaim_complete_data { |
6702 | struct nfs_client *clp; | |
6703 | struct nfs41_reclaim_complete_args arg; | |
6704 | struct nfs41_reclaim_complete_res res; | |
6705 | }; | |
6706 | ||
6707 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6708 | { | |
6709 | struct nfs4_reclaim_complete_data *calldata = data; | |
6710 | ||
d9afbd1b TM |
6711 | nfs41_setup_sequence(calldata->clp->cl_session, |
6712 | &calldata->arg.seq_args, | |
6713 | &calldata->res.seq_res, | |
6714 | task); | |
fce5c838 RL |
6715 | } |
6716 | ||
aa5190d0 TM |
6717 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6718 | { | |
6719 | switch(task->tk_status) { | |
6720 | case 0: | |
6721 | case -NFS4ERR_COMPLETE_ALREADY: | |
6722 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6723 | break; | |
6724 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6725 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6726 | /* fall through */ |
6727 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6728 | return -EAGAIN; |
6729 | default: | |
0400a6b0 | 6730 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6731 | } |
6732 | return 0; | |
6733 | } | |
6734 | ||
fce5c838 RL |
6735 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6736 | { | |
6737 | struct nfs4_reclaim_complete_data *calldata = data; | |
6738 | struct nfs_client *clp = calldata->clp; | |
6739 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6740 | ||
6741 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6742 | if (!nfs41_sequence_done(task, res)) |
6743 | return; | |
fce5c838 | 6744 | |
c6d01c6f | 6745 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
6746 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6747 | rpc_restart_call_prepare(task); | |
6748 | return; | |
6749 | } | |
fce5c838 RL |
6750 | dprintk("<-- %s\n", __func__); |
6751 | } | |
6752 | ||
6753 | static void nfs4_free_reclaim_complete_data(void *data) | |
6754 | { | |
6755 | struct nfs4_reclaim_complete_data *calldata = data; | |
6756 | ||
6757 | kfree(calldata); | |
6758 | } | |
6759 | ||
6760 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6761 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6762 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6763 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6764 | }; | |
6765 | ||
6766 | /* | |
6767 | * Issue a global reclaim complete. | |
6768 | */ | |
965e9c23 TM |
6769 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6770 | struct rpc_cred *cred) | |
fce5c838 RL |
6771 | { |
6772 | struct nfs4_reclaim_complete_data *calldata; | |
6773 | struct rpc_task *task; | |
6774 | struct rpc_message msg = { | |
6775 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6776 | .rpc_cred = cred, |
fce5c838 RL |
6777 | }; |
6778 | struct rpc_task_setup task_setup_data = { | |
6779 | .rpc_client = clp->cl_rpcclient, | |
6780 | .rpc_message = &msg, | |
6781 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6782 | .flags = RPC_TASK_ASYNC, | |
6783 | }; | |
6784 | int status = -ENOMEM; | |
6785 | ||
6786 | dprintk("--> %s\n", __func__); | |
8535b2be | 6787 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6788 | if (calldata == NULL) |
6789 | goto out; | |
6790 | calldata->clp = clp; | |
6791 | calldata->arg.one_fs = 0; | |
fce5c838 | 6792 | |
a9c92d6b | 6793 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6794 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6795 | msg.rpc_argp = &calldata->arg; |
6796 | msg.rpc_resp = &calldata->res; | |
6797 | task_setup_data.callback_data = calldata; | |
6798 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6799 | if (IS_ERR(task)) { |
fce5c838 | 6800 | status = PTR_ERR(task); |
acf82b85 DC |
6801 | goto out; |
6802 | } | |
c34c32ea AA |
6803 | status = nfs4_wait_for_completion_rpc_task(task); |
6804 | if (status == 0) | |
6805 | status = task->tk_status; | |
fce5c838 | 6806 | rpc_put_task(task); |
acf82b85 | 6807 | return 0; |
fce5c838 RL |
6808 | out: |
6809 | dprintk("<-- %s status=%d\n", __func__, status); | |
6810 | return status; | |
6811 | } | |
b1f69b75 AA |
6812 | |
6813 | static void | |
6814 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6815 | { | |
6816 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6817 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6818 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6819 | |
6820 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6821 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6822 | * right now covering the LAYOUTGET we are about to send. | |
6823 | * However, that is not so catastrophic, and there seems | |
6824 | * to be no way to prevent it completely. | |
6825 | */ | |
6ba7db34 | 6826 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6827 | &lgp->res.seq_res, task)) |
b1f69b75 | 6828 | return; |
cf7d63f1 FI |
6829 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6830 | NFS_I(lgp->args.inode)->layout, | |
6831 | lgp->args.ctx->state)) { | |
6832 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6833 | } |
b1f69b75 AA |
6834 | } |
6835 | ||
6836 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6837 | { | |
6838 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6839 | struct inode *inode = lgp->args.inode; |
6840 | struct nfs_server *server = NFS_SERVER(inode); | |
6841 | struct pnfs_layout_hdr *lo; | |
6842 | struct nfs4_state *state = NULL; | |
30005121 | 6843 | unsigned long timeo, giveup; |
b1f69b75 AA |
6844 | |
6845 | dprintk("--> %s\n", __func__); | |
6846 | ||
6ba7db34 | 6847 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6848 | goto out; |
b1f69b75 AA |
6849 | |
6850 | switch (task->tk_status) { | |
6851 | case 0: | |
ee314c2a | 6852 | goto out; |
b1f69b75 AA |
6853 | case -NFS4ERR_LAYOUTTRYLATER: |
6854 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6855 | timeo = rpc_get_timeout(task->tk_client); |
6856 | giveup = lgp->args.timestamp + timeo; | |
6857 | if (time_after(giveup, jiffies)) | |
6858 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6859 | break; |
6860 | case -NFS4ERR_EXPIRED: | |
6861 | case -NFS4ERR_BAD_STATEID: | |
6862 | spin_lock(&inode->i_lock); | |
6863 | lo = NFS_I(inode)->layout; | |
6864 | if (!lo || list_empty(&lo->plh_segs)) { | |
6865 | spin_unlock(&inode->i_lock); | |
6866 | /* If the open stateid was bad, then recover it. */ | |
6867 | state = lgp->args.ctx->state; | |
6868 | } else { | |
6869 | LIST_HEAD(head); | |
6870 | ||
6871 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6872 | spin_unlock(&inode->i_lock); | |
6873 | /* Mark the bad layout state as invalid, then | |
6874 | * retry using the open stateid. */ | |
6875 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6876 | } |
6877 | } | |
ee314c2a TM |
6878 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6879 | rpc_restart_call_prepare(task); | |
6880 | out: | |
b1f69b75 AA |
6881 | dprintk("<-- %s\n", __func__); |
6882 | } | |
6883 | ||
8554116e IK |
6884 | static size_t max_response_pages(struct nfs_server *server) |
6885 | { | |
6886 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6887 | return nfs_page_array_len(0, max_resp_sz); | |
6888 | } | |
6889 | ||
6890 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6891 | { | |
6892 | int i; | |
6893 | ||
6894 | if (!pages) | |
6895 | return; | |
6896 | ||
6897 | for (i = 0; i < size; i++) { | |
6898 | if (!pages[i]) | |
6899 | break; | |
6900 | __free_page(pages[i]); | |
6901 | } | |
6902 | kfree(pages); | |
6903 | } | |
6904 | ||
6905 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6906 | { | |
6907 | struct page **pages; | |
6908 | int i; | |
6909 | ||
6910 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6911 | if (!pages) { | |
6912 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6913 | return NULL; | |
6914 | } | |
6915 | ||
6916 | for (i = 0; i < size; i++) { | |
6917 | pages[i] = alloc_page(gfp_flags); | |
6918 | if (!pages[i]) { | |
6919 | dprintk("%s: failed to allocate page\n", __func__); | |
6920 | nfs4_free_pages(pages, size); | |
6921 | return NULL; | |
6922 | } | |
6923 | } | |
6924 | ||
6925 | return pages; | |
6926 | } | |
6927 | ||
b1f69b75 AA |
6928 | static void nfs4_layoutget_release(void *calldata) |
6929 | { | |
6930 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6931 | struct inode *inode = lgp->args.inode; |
6932 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6933 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6934 | |
6935 | dprintk("--> %s\n", __func__); | |
8554116e | 6936 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6937 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6938 | put_nfs_open_context(lgp->args.ctx); |
6939 | kfree(calldata); | |
6940 | dprintk("<-- %s\n", __func__); | |
6941 | } | |
6942 | ||
6943 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6944 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6945 | .rpc_call_done = nfs4_layoutget_done, | |
6946 | .rpc_release = nfs4_layoutget_release, | |
6947 | }; | |
6948 | ||
a0b0a6e3 TM |
6949 | struct pnfs_layout_segment * |
6950 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6951 | { |
a47970ff WAA |
6952 | struct inode *inode = lgp->args.inode; |
6953 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6954 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6955 | struct rpc_task *task; |
6956 | struct rpc_message msg = { | |
6957 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6958 | .rpc_argp = &lgp->args, | |
6959 | .rpc_resp = &lgp->res, | |
6ab59344 | 6960 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
6961 | }; |
6962 | struct rpc_task_setup task_setup_data = { | |
6963 | .rpc_client = server->client, | |
6964 | .rpc_message = &msg, | |
6965 | .callback_ops = &nfs4_layoutget_call_ops, | |
6966 | .callback_data = lgp, | |
6967 | .flags = RPC_TASK_ASYNC, | |
6968 | }; | |
a0b0a6e3 | 6969 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6970 | int status = 0; |
6971 | ||
6972 | dprintk("--> %s\n", __func__); | |
6973 | ||
8554116e IK |
6974 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6975 | if (!lgp->args.layout.pages) { | |
6976 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6977 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6978 | } |
6979 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6980 | lgp->args.timestamp = jiffies; |
8554116e | 6981 | |
35124a09 | 6982 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6983 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 6984 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6985 | |
6986 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6987 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6988 | ||
b1f69b75 AA |
6989 | task = rpc_run_task(&task_setup_data); |
6990 | if (IS_ERR(task)) | |
a0b0a6e3 | 6991 | return ERR_CAST(task); |
b1f69b75 | 6992 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6993 | if (status == 0) |
6994 | status = task->tk_status; | |
1037e6ea TM |
6995 | trace_nfs4_layoutget(lgp->args.ctx, |
6996 | &lgp->args.range, | |
6997 | &lgp->res.range, | |
6998 | status); | |
085b7a45 WAA |
6999 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7000 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7001 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7002 | rpc_put_task(task); |
7003 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7004 | if (status) |
7005 | return ERR_PTR(status); | |
7006 | return lseg; | |
b1f69b75 AA |
7007 | } |
7008 | ||
cbe82603 BH |
7009 | static void |
7010 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7011 | { | |
7012 | struct nfs4_layoutreturn *lrp = calldata; | |
7013 | ||
7014 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7015 | nfs41_setup_sequence(lrp->clp->cl_session, |
7016 | &lrp->args.seq_args, | |
7017 | &lrp->res.seq_res, | |
7018 | task); | |
cbe82603 BH |
7019 | } |
7020 | ||
7021 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7022 | { | |
7023 | struct nfs4_layoutreturn *lrp = calldata; | |
7024 | struct nfs_server *server; | |
7025 | ||
7026 | dprintk("--> %s\n", __func__); | |
7027 | ||
6ba7db34 | 7028 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7029 | return; |
7030 | ||
7031 | server = NFS_SERVER(lrp->args.inode); | |
7032 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 7033 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7034 | return; |
7035 | } | |
cbe82603 BH |
7036 | dprintk("<-- %s\n", __func__); |
7037 | } | |
7038 | ||
7039 | static void nfs4_layoutreturn_release(void *calldata) | |
7040 | { | |
7041 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7042 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7043 | |
7044 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7045 | spin_lock(&lo->plh_inode->i_lock); |
7046 | if (lrp->res.lrs_present) | |
7047 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7048 | lo->plh_block_lgets--; | |
7049 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7050 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7051 | kfree(calldata); |
7052 | dprintk("<-- %s\n", __func__); | |
7053 | } | |
7054 | ||
7055 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7056 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7057 | .rpc_call_done = nfs4_layoutreturn_done, | |
7058 | .rpc_release = nfs4_layoutreturn_release, | |
7059 | }; | |
7060 | ||
7061 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7062 | { | |
7063 | struct rpc_task *task; | |
7064 | struct rpc_message msg = { | |
7065 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7066 | .rpc_argp = &lrp->args, | |
7067 | .rpc_resp = &lrp->res, | |
9556000d | 7068 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7069 | }; |
7070 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7071 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7072 | .rpc_message = &msg, |
7073 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7074 | .callback_data = lrp, | |
7075 | }; | |
7076 | int status; | |
7077 | ||
7078 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7079 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7080 | task = rpc_run_task(&task_setup_data); |
7081 | if (IS_ERR(task)) | |
7082 | return PTR_ERR(task); | |
7083 | status = task->tk_status; | |
1037e6ea | 7084 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7085 | dprintk("<-- %s status=%d\n", __func__, status); |
7086 | rpc_put_task(task); | |
7087 | return status; | |
7088 | } | |
7089 | ||
7f11d8d3 AA |
7090 | /* |
7091 | * Retrieve the list of Data Server devices from the MDS. | |
7092 | */ | |
7093 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
7094 | const struct nfs_fh *fh, | |
7095 | struct pnfs_devicelist *devlist) | |
7096 | { | |
7097 | struct nfs4_getdevicelist_args args = { | |
7098 | .fh = fh, | |
7099 | .layoutclass = server->pnfs_curr_ld->id, | |
7100 | }; | |
7101 | struct nfs4_getdevicelist_res res = { | |
7102 | .devlist = devlist, | |
7103 | }; | |
7104 | struct rpc_message msg = { | |
7105 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
7106 | .rpc_argp = &args, | |
7107 | .rpc_resp = &res, | |
7108 | }; | |
7109 | int status; | |
7110 | ||
7111 | dprintk("--> %s\n", __func__); | |
7112 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
7113 | &res.seq_res, 0); | |
7114 | dprintk("<-- %s status=%d\n", __func__, status); | |
7115 | return status; | |
7116 | } | |
7117 | ||
7118 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
7119 | const struct nfs_fh *fh, | |
7120 | struct pnfs_devicelist *devlist) | |
7121 | { | |
7122 | struct nfs4_exception exception = { }; | |
7123 | int err; | |
7124 | ||
7125 | do { | |
7126 | err = nfs4_handle_exception(server, | |
7127 | _nfs4_getdevicelist(server, fh, devlist), | |
7128 | &exception); | |
7129 | } while (exception.retry); | |
7130 | ||
7131 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
7132 | err, devlist->num_devs); | |
7133 | ||
7134 | return err; | |
7135 | } | |
7136 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
7137 | ||
b1f69b75 | 7138 | static int |
cd5875fe TM |
7139 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7140 | struct pnfs_device *pdev, | |
7141 | struct rpc_cred *cred) | |
b1f69b75 AA |
7142 | { |
7143 | struct nfs4_getdeviceinfo_args args = { | |
7144 | .pdev = pdev, | |
7145 | }; | |
7146 | struct nfs4_getdeviceinfo_res res = { | |
7147 | .pdev = pdev, | |
7148 | }; | |
7149 | struct rpc_message msg = { | |
7150 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7151 | .rpc_argp = &args, | |
7152 | .rpc_resp = &res, | |
cd5875fe | 7153 | .rpc_cred = cred, |
b1f69b75 AA |
7154 | }; |
7155 | int status; | |
7156 | ||
7157 | dprintk("--> %s\n", __func__); | |
7c513058 | 7158 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7159 | dprintk("<-- %s status=%d\n", __func__, status); |
7160 | ||
7161 | return status; | |
7162 | } | |
7163 | ||
cd5875fe TM |
7164 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7165 | struct pnfs_device *pdev, | |
7166 | struct rpc_cred *cred) | |
b1f69b75 AA |
7167 | { |
7168 | struct nfs4_exception exception = { }; | |
7169 | int err; | |
7170 | ||
7171 | do { | |
7172 | err = nfs4_handle_exception(server, | |
cd5875fe | 7173 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7174 | &exception); |
7175 | } while (exception.retry); | |
7176 | return err; | |
7177 | } | |
7178 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7179 | ||
863a3c6c AA |
7180 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7181 | { | |
7182 | struct nfs4_layoutcommit_data *data = calldata; | |
7183 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7184 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7185 | |
d9afbd1b TM |
7186 | nfs41_setup_sequence(session, |
7187 | &data->args.seq_args, | |
7188 | &data->res.seq_res, | |
7189 | task); | |
863a3c6c AA |
7190 | } |
7191 | ||
7192 | static void | |
7193 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7194 | { | |
7195 | struct nfs4_layoutcommit_data *data = calldata; | |
7196 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7197 | ||
6ba7db34 | 7198 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7199 | return; |
7200 | ||
7201 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7202 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7203 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7204 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7205 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7206 | task->tk_status = 0; |
e59d27e0 TM |
7207 | break; |
7208 | case 0: | |
863a3c6c AA |
7209 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7210 | data->res.fattr); | |
e59d27e0 TM |
7211 | break; |
7212 | default: | |
7213 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7214 | rpc_restart_call_prepare(task); | |
7215 | return; | |
7216 | } | |
7217 | } | |
863a3c6c AA |
7218 | } |
7219 | ||
7220 | static void nfs4_layoutcommit_release(void *calldata) | |
7221 | { | |
7222 | struct nfs4_layoutcommit_data *data = calldata; | |
7223 | ||
db29c089 | 7224 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
7225 | put_rpccred(data->cred); |
7226 | kfree(data); | |
7227 | } | |
7228 | ||
7229 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7230 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7231 | .rpc_call_done = nfs4_layoutcommit_done, | |
7232 | .rpc_release = nfs4_layoutcommit_release, | |
7233 | }; | |
7234 | ||
7235 | int | |
ef311537 | 7236 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7237 | { |
7238 | struct rpc_message msg = { | |
7239 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7240 | .rpc_argp = &data->args, | |
7241 | .rpc_resp = &data->res, | |
7242 | .rpc_cred = data->cred, | |
7243 | }; | |
7244 | struct rpc_task_setup task_setup_data = { | |
7245 | .task = &data->task, | |
7246 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7247 | .rpc_message = &msg, | |
7248 | .callback_ops = &nfs4_layoutcommit_ops, | |
7249 | .callback_data = data, | |
7250 | .flags = RPC_TASK_ASYNC, | |
7251 | }; | |
7252 | struct rpc_task *task; | |
7253 | int status = 0; | |
7254 | ||
7255 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7256 | "lbw: %llu inode %lu\n", | |
7257 | data->task.tk_pid, sync, | |
7258 | data->args.lastbytewritten, | |
7259 | data->args.inode->i_ino); | |
7260 | ||
a9c92d6b | 7261 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7262 | task = rpc_run_task(&task_setup_data); |
7263 | if (IS_ERR(task)) | |
7264 | return PTR_ERR(task); | |
ef311537 | 7265 | if (sync == false) |
863a3c6c AA |
7266 | goto out; |
7267 | status = nfs4_wait_for_completion_rpc_task(task); | |
7268 | if (status != 0) | |
7269 | goto out; | |
7270 | status = task->tk_status; | |
1037e6ea | 7271 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7272 | out: |
7273 | dprintk("%s: status %d\n", __func__, status); | |
7274 | rpc_put_task(task); | |
7275 | return status; | |
7276 | } | |
fca78d6d | 7277 | |
97431204 AA |
7278 | /** |
7279 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7280 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7281 | */ | |
fca78d6d BS |
7282 | static int |
7283 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7284 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7285 | { | |
7286 | struct nfs41_secinfo_no_name_args args = { | |
7287 | .style = SECINFO_STYLE_CURRENT_FH, | |
7288 | }; | |
7289 | struct nfs4_secinfo_res res = { | |
7290 | .flavors = flavors, | |
7291 | }; | |
7292 | struct rpc_message msg = { | |
7293 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7294 | .rpc_argp = &args, | |
7295 | .rpc_resp = &res, | |
7296 | }; | |
97431204 AA |
7297 | return nfs4_call_sync(server->nfs_client->cl_rpcclient, server, &msg, |
7298 | &args.seq_args, &res.seq_res, 0); | |
fca78d6d BS |
7299 | } |
7300 | ||
7301 | static int | |
7302 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7303 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7304 | { | |
7305 | struct nfs4_exception exception = { }; | |
7306 | int err; | |
7307 | do { | |
7308 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7309 | switch (err) { | |
7310 | case 0: | |
7311 | case -NFS4ERR_WRONGSEC: | |
7312 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 7313 | goto out; |
fca78d6d BS |
7314 | default: |
7315 | err = nfs4_handle_exception(server, err, &exception); | |
7316 | } | |
7317 | } while (exception.retry); | |
05e9cfb4 | 7318 | out: |
fca78d6d BS |
7319 | return err; |
7320 | } | |
7321 | ||
7322 | static int | |
7323 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7324 | struct nfs_fsinfo *info) | |
7325 | { | |
7326 | int err; | |
7327 | struct page *page; | |
7328 | rpc_authflavor_t flavor; | |
7329 | struct nfs4_secinfo_flavors *flavors; | |
7330 | ||
7331 | page = alloc_page(GFP_KERNEL); | |
7332 | if (!page) { | |
7333 | err = -ENOMEM; | |
7334 | goto out; | |
7335 | } | |
7336 | ||
7337 | flavors = page_address(page); | |
7338 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7339 | ||
7340 | /* | |
7341 | * Fall back on "guess and check" method if | |
7342 | * the server doesn't support SECINFO_NO_NAME | |
7343 | */ | |
7344 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
7345 | err = nfs4_find_root_sec(server, fhandle, info); | |
7346 | goto out_freepage; | |
7347 | } | |
7348 | if (err) | |
7349 | goto out_freepage; | |
7350 | ||
7351 | flavor = nfs_find_best_sec(flavors); | |
7352 | if (err == 0) | |
7353 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
7354 | ||
7355 | out_freepage: | |
7356 | put_page(page); | |
7357 | if (err == -EACCES) | |
7358 | return -EPERM; | |
7359 | out: | |
7360 | return err; | |
7361 | } | |
1cab0652 | 7362 | |
ab7cb0df TM |
7363 | static int _nfs41_test_stateid(struct nfs_server *server, |
7364 | nfs4_stateid *stateid, | |
7365 | struct rpc_cred *cred) | |
7d974794 BS |
7366 | { |
7367 | int status; | |
7368 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7369 | .stateid = stateid, |
7d974794 BS |
7370 | }; |
7371 | struct nfs41_test_stateid_res res; | |
7372 | struct rpc_message msg = { | |
7373 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7374 | .rpc_argp = &args, | |
7375 | .rpc_resp = &res, | |
ab7cb0df | 7376 | .rpc_cred = cred, |
7d974794 | 7377 | }; |
1cab0652 | 7378 | |
38527b15 | 7379 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 7380 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
7381 | nfs4_set_sequence_privileged(&args.seq_args); |
7382 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
7383 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
7384 | if (status != NFS_OK) { |
7385 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7386 | return status; |
38527b15 CL |
7387 | } |
7388 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7389 | return -res.status; |
7d974794 BS |
7390 | } |
7391 | ||
38527b15 CL |
7392 | /** |
7393 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7394 | * | |
7395 | * @server: server / transport on which to perform the operation | |
7396 | * @stateid: state ID to test | |
ab7cb0df | 7397 | * @cred: credential |
38527b15 CL |
7398 | * |
7399 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7400 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7401 | * failed or the state ID is not currently valid. | |
7402 | */ | |
ab7cb0df TM |
7403 | static int nfs41_test_stateid(struct nfs_server *server, |
7404 | nfs4_stateid *stateid, | |
7405 | struct rpc_cred *cred) | |
7d974794 BS |
7406 | { |
7407 | struct nfs4_exception exception = { }; | |
7408 | int err; | |
7409 | do { | |
ab7cb0df | 7410 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
7411 | if (err != -NFS4ERR_DELAY) |
7412 | break; | |
7413 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7414 | } while (exception.retry); |
7415 | return err; | |
7416 | } | |
9aeda35f | 7417 | |
7c1d5fae TM |
7418 | struct nfs_free_stateid_data { |
7419 | struct nfs_server *server; | |
7420 | struct nfs41_free_stateid_args args; | |
9aeda35f | 7421 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
7422 | }; |
7423 | ||
7424 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
7425 | { | |
7426 | struct nfs_free_stateid_data *data = calldata; | |
7427 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
7428 | &data->args.seq_args, | |
7429 | &data->res.seq_res, | |
7430 | task); | |
7431 | } | |
7432 | ||
7433 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
7434 | { | |
7435 | struct nfs_free_stateid_data *data = calldata; | |
7436 | ||
7437 | nfs41_sequence_done(task, &data->res.seq_res); | |
7438 | ||
7439 | switch (task->tk_status) { | |
7440 | case -NFS4ERR_DELAY: | |
7441 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
7442 | rpc_restart_call_prepare(task); | |
7443 | } | |
7444 | } | |
7445 | ||
7446 | static void nfs41_free_stateid_release(void *calldata) | |
7447 | { | |
7448 | kfree(calldata); | |
7449 | } | |
7450 | ||
17f26b12 | 7451 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
7452 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
7453 | .rpc_call_done = nfs41_free_stateid_done, | |
7454 | .rpc_release = nfs41_free_stateid_release, | |
7455 | }; | |
7456 | ||
7457 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
7458 | nfs4_stateid *stateid, | |
ab7cb0df | 7459 | struct rpc_cred *cred, |
7c1d5fae TM |
7460 | bool privileged) |
7461 | { | |
9aeda35f BS |
7462 | struct rpc_message msg = { |
7463 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 7464 | .rpc_cred = cred, |
9aeda35f | 7465 | }; |
7c1d5fae TM |
7466 | struct rpc_task_setup task_setup = { |
7467 | .rpc_client = server->client, | |
7468 | .rpc_message = &msg, | |
7469 | .callback_ops = &nfs41_free_stateid_ops, | |
7470 | .flags = RPC_TASK_ASYNC, | |
7471 | }; | |
7472 | struct nfs_free_stateid_data *data; | |
9aeda35f | 7473 | |
38527b15 | 7474 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
7475 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7476 | if (!data) | |
7477 | return ERR_PTR(-ENOMEM); | |
7478 | data->server = server; | |
7479 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
7480 | ||
7481 | task_setup.callback_data = data; | |
7482 | ||
7483 | msg.rpc_argp = &data->args; | |
7484 | msg.rpc_resp = &data->res; | |
a9c92d6b | 7485 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
7486 | if (privileged) |
7487 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
7488 | ||
7489 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
7490 | } |
7491 | ||
38527b15 CL |
7492 | /** |
7493 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7494 | * | |
7495 | * @server: server / transport on which to perform the operation | |
7496 | * @stateid: state ID to release | |
ab7cb0df | 7497 | * @cred: credential |
38527b15 CL |
7498 | * |
7499 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7500 | * negative NFS4ERR value is returned. | |
7501 | */ | |
ab7cb0df TM |
7502 | static int nfs41_free_stateid(struct nfs_server *server, |
7503 | nfs4_stateid *stateid, | |
7504 | struct rpc_cred *cred) | |
9aeda35f | 7505 | { |
7c1d5fae TM |
7506 | struct rpc_task *task; |
7507 | int ret; | |
7508 | ||
ab7cb0df | 7509 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
7510 | if (IS_ERR(task)) |
7511 | return PTR_ERR(task); | |
7512 | ret = rpc_wait_for_completion_task(task); | |
7513 | if (!ret) | |
7514 | ret = task->tk_status; | |
7515 | rpc_put_task(task); | |
7516 | return ret; | |
9aeda35f | 7517 | } |
36281caa | 7518 | |
c8b2d0bf TM |
7519 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
7520 | { | |
7521 | struct rpc_task *task; | |
ab7cb0df | 7522 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 7523 | |
ab7cb0df | 7524 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
7525 | nfs4_free_lock_state(server, lsp); |
7526 | if (IS_ERR(task)) | |
7527 | return PTR_ERR(task); | |
7528 | rpc_put_task(task); | |
7529 | return 0; | |
7530 | } | |
7531 | ||
36281caa TM |
7532 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
7533 | const nfs4_stateid *s2) | |
7534 | { | |
2d2f24ad | 7535 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7536 | return false; |
7537 | ||
2d2f24ad | 7538 | if (s1->seqid == s2->seqid) |
36281caa | 7539 | return true; |
2d2f24ad | 7540 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7541 | return true; |
7542 | ||
7543 | return false; | |
7544 | } | |
7545 | ||
557134a3 AA |
7546 | #endif /* CONFIG_NFS_V4_1 */ |
7547 | ||
36281caa TM |
7548 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7549 | const nfs4_stateid *s2) | |
7550 | { | |
f597c537 | 7551 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7552 | } |
7553 | ||
7554 | ||
17280175 | 7555 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7556 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7557 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7558 | .recover_open = nfs4_open_reclaim, |
7559 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7560 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 7561 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7562 | }; |
7563 | ||
591d71cb | 7564 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7565 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7566 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7567 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7568 | .recover_open = nfs4_open_reclaim, | |
7569 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7570 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 7571 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7572 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7573 | }; |
7574 | #endif /* CONFIG_NFS_V4_1 */ | |
7575 | ||
17280175 | 7576 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7577 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7578 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7579 | .recover_open = nfs4_open_expired, | |
7580 | .recover_lock = nfs4_lock_expired, | |
7581 | .establish_clid = nfs4_init_clientid, | |
7582 | }; | |
7583 | ||
7584 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7585 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7586 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7587 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7588 | .recover_open = nfs41_open_expired, |
7589 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7590 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 7591 | }; |
591d71cb | 7592 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7593 | |
17280175 | 7594 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7595 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7596 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7597 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7598 | }; |
7599 | ||
7600 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7601 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7602 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7603 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7604 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7605 | }; |
7606 | #endif | |
7607 | ||
97dc1359 TM |
7608 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7609 | .minor_version = 0, | |
39c6daae TM |
7610 | .init_caps = NFS_CAP_READDIRPLUS |
7611 | | NFS_CAP_ATOMIC_OPEN | |
7612 | | NFS_CAP_CHANGE_ATTR | |
7613 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
7614 | .init_client = nfs40_init_client, |
7615 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 7616 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7617 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7618 | .free_lock_state = nfs4_release_lockowner, |
9915ea7e | 7619 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
7620 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7621 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7622 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7623 | }; |
7624 | ||
7625 | #if defined(CONFIG_NFS_V4_1) | |
7626 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7627 | .minor_version = 1, | |
39c6daae TM |
7628 | .init_caps = NFS_CAP_READDIRPLUS |
7629 | | NFS_CAP_ATOMIC_OPEN | |
7630 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7631 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7632 | | NFS_CAP_STATEID_NFSV41 |
7633 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
7634 | .init_client = nfs41_init_client, |
7635 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 7636 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7637 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7638 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 7639 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
7640 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7641 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7642 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7643 | }; |
7644 | #endif | |
7645 | ||
42c2c424 SD |
7646 | #if defined(CONFIG_NFS_V4_2) |
7647 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7648 | .minor_version = 2, | |
7017310a BS |
7649 | .init_caps = NFS_CAP_READDIRPLUS |
7650 | | NFS_CAP_ATOMIC_OPEN | |
7651 | | NFS_CAP_CHANGE_ATTR | |
7652 | | NFS_CAP_POSIX_LOCK | |
7653 | | NFS_CAP_STATEID_NFSV41 | |
7654 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
7655 | .init_client = nfs41_init_client, |
7656 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
7657 | .match_stateid = nfs41_match_stateid, |
7658 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 7659 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 7660 | .call_sync_ops = &nfs41_call_sync_ops, |
42c2c424 SD |
7661 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7662 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7663 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7664 | }; | |
7665 | #endif | |
7666 | ||
97dc1359 TM |
7667 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7668 | [0] = &nfs_v4_0_minor_ops, | |
7669 | #if defined(CONFIG_NFS_V4_1) | |
7670 | [1] = &nfs_v4_1_minor_ops, | |
7671 | #endif | |
42c2c424 SD |
7672 | #if defined(CONFIG_NFS_V4_2) |
7673 | [2] = &nfs_v4_2_minor_ops, | |
7674 | #endif | |
97dc1359 TM |
7675 | }; |
7676 | ||
17f26b12 | 7677 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
7678 | .create = nfs_create, |
7679 | .lookup = nfs_lookup, | |
7680 | .atomic_open = nfs_atomic_open, | |
7681 | .link = nfs_link, | |
7682 | .unlink = nfs_unlink, | |
7683 | .symlink = nfs_symlink, | |
7684 | .mkdir = nfs_mkdir, | |
7685 | .rmdir = nfs_rmdir, | |
7686 | .mknod = nfs_mknod, | |
7687 | .rename = nfs_rename, | |
7688 | .permission = nfs_permission, | |
7689 | .getattr = nfs_getattr, | |
7690 | .setattr = nfs_setattr, | |
7691 | .getxattr = generic_getxattr, | |
7692 | .setxattr = generic_setxattr, | |
7693 | .listxattr = generic_listxattr, | |
7694 | .removexattr = generic_removexattr, | |
7695 | }; | |
7696 | ||
92e1d5be | 7697 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7698 | .permission = nfs_permission, |
7699 | .getattr = nfs_getattr, | |
7700 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7701 | .getxattr = generic_getxattr, |
7702 | .setxattr = generic_setxattr, | |
7703 | .listxattr = generic_listxattr, | |
7704 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7705 | }; |
7706 | ||
509de811 | 7707 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7708 | .version = 4, /* protocol version */ |
7709 | .dentry_ops = &nfs4_dentry_operations, | |
7710 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7711 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7712 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7713 | .getroot = nfs4_proc_get_root, |
281cad46 | 7714 | .submount = nfs4_submount, |
ff9099f2 | 7715 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7716 | .getattr = nfs4_proc_getattr, |
7717 | .setattr = nfs4_proc_setattr, | |
7718 | .lookup = nfs4_proc_lookup, | |
7719 | .access = nfs4_proc_access, | |
7720 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7721 | .create = nfs4_proc_create, |
7722 | .remove = nfs4_proc_remove, | |
7723 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7724 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7725 | .unlink_done = nfs4_proc_unlink_done, |
7726 | .rename = nfs4_proc_rename, | |
d3d4152a | 7727 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7728 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7729 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7730 | .link = nfs4_proc_link, |
7731 | .symlink = nfs4_proc_symlink, | |
7732 | .mkdir = nfs4_proc_mkdir, | |
7733 | .rmdir = nfs4_proc_remove, | |
7734 | .readdir = nfs4_proc_readdir, | |
7735 | .mknod = nfs4_proc_mknod, | |
7736 | .statfs = nfs4_proc_statfs, | |
7737 | .fsinfo = nfs4_proc_fsinfo, | |
7738 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7739 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7740 | .decode_dirent = nfs4_decode_dirent, |
7741 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7742 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7743 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7744 | .read_done = nfs4_read_done, |
1da177e4 | 7745 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7746 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7747 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7748 | .write_done = nfs4_write_done, |
1da177e4 | 7749 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7750 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7751 | .commit_done = nfs4_commit_done, |
1da177e4 | 7752 | .lock = nfs4_proc_lock, |
e50a1c2e | 7753 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7754 | .close_context = nfs4_close_context, |
2b484297 | 7755 | .open_context = nfs4_atomic_open, |
011e2a7f | 7756 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7757 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7758 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7759 | .init_client = nfs4_init_client, |
cdb7eced | 7760 | .free_client = nfs4_free_client, |
1179acc6 BS |
7761 | .create_server = nfs4_create_server, |
7762 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7763 | }; |
7764 | ||
64c2ce8b AK |
7765 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7766 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7767 | .list = nfs4_xattr_list_nfs4_acl, | |
7768 | .get = nfs4_xattr_get_nfs4_acl, | |
7769 | .set = nfs4_xattr_set_nfs4_acl, | |
7770 | }; | |
7771 | ||
7772 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7773 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
7774 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
7775 | &nfs4_xattr_nfs4_label_handler, | |
7776 | #endif | |
64c2ce8b AK |
7777 | NULL |
7778 | }; | |
7779 | ||
1da177e4 LT |
7780 | /* |
7781 | * Local variables: | |
7782 | * c-basic-offset: 8 | |
7783 | * End: | |
7784 | */ |