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