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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 | 68 | |
c6d01c6f TM |
69 | #include "nfs4trace.h" |
70 | ||
1da177e4 LT |
71 | #define NFSDBG_FACILITY NFSDBG_PROC |
72 | ||
2066fe89 | 73 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
74 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
75 | ||
cdd4e68b | 76 | struct nfs4_opendata; |
864472e9 | 77 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 78 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 79 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 80 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 81 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
82 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
86 | struct nfs4_state *state, struct nfs4_label *ilabel, |
87 | struct nfs4_label *olabel); | |
f062eb6c | 88 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
89 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
90 | struct rpc_cred *); | |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
92 | struct rpc_cred *); | |
f062eb6c | 93 | #endif |
aa9c2669 DQ |
94 | |
95 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
96 | static inline struct nfs4_label * | |
97 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
98 | struct iattr *sattr, struct nfs4_label *label) | |
99 | { | |
100 | int err; | |
101 | ||
102 | if (label == NULL) | |
103 | return NULL; | |
104 | ||
105 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
106 | return NULL; | |
107 | ||
108 | if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2) | |
109 | return NULL; | |
110 | ||
111 | err = security_dentry_init_security(dentry, sattr->ia_mode, | |
112 | &dentry->d_name, (void **)&label->label, &label->len); | |
113 | if (err == 0) | |
114 | return label; | |
115 | ||
116 | return NULL; | |
117 | } | |
118 | static inline void | |
119 | nfs4_label_release_security(struct nfs4_label *label) | |
120 | { | |
121 | if (label) | |
122 | security_release_secctx(label->label, label->len); | |
123 | } | |
124 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
125 | { | |
126 | if (label) | |
127 | return server->attr_bitmask; | |
128 | ||
129 | return server->attr_bitmask_nl; | |
130 | } | |
131 | #else | |
132 | static inline struct nfs4_label * | |
133 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
134 | struct iattr *sattr, struct nfs4_label *l) | |
135 | { return NULL; } | |
136 | static inline void | |
137 | nfs4_label_release_security(struct nfs4_label *label) | |
138 | { return; } | |
139 | static inline u32 * | |
140 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
141 | { return server->attr_bitmask; } | |
142 | #endif | |
143 | ||
1da177e4 | 144 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 145 | static int nfs4_map_errors(int err) |
1da177e4 | 146 | { |
52567b03 TM |
147 | if (err >= -1000) |
148 | return err; | |
149 | switch (err) { | |
150 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
151 | case -NFS4ERR_LAYOUTTRYLATER: |
152 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 153 | return -EREMOTEIO; |
7ebb9315 BS |
154 | case -NFS4ERR_WRONGSEC: |
155 | return -EPERM; | |
3ddeb7c5 TM |
156 | case -NFS4ERR_BADOWNER: |
157 | case -NFS4ERR_BADNAME: | |
158 | return -EINVAL; | |
fb13bfa7 TM |
159 | case -NFS4ERR_SHARE_DENIED: |
160 | return -EACCES; | |
f25efd85 SD |
161 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
162 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
163 | case -NFS4ERR_ACCESS: |
164 | return -EACCES; | |
6e3cf241 TM |
165 | case -NFS4ERR_FILE_OPEN: |
166 | return -EBUSY; | |
52567b03 | 167 | default: |
1da177e4 | 168 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 169 | __func__, -err); |
52567b03 | 170 | break; |
1da177e4 | 171 | } |
52567b03 | 172 | return -EIO; |
1da177e4 LT |
173 | } |
174 | ||
175 | /* | |
176 | * This is our standard bitmap for GETATTR requests. | |
177 | */ | |
1549210f | 178 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
179 | FATTR4_WORD0_TYPE |
180 | | FATTR4_WORD0_CHANGE | |
181 | | FATTR4_WORD0_SIZE | |
182 | | FATTR4_WORD0_FSID | |
183 | | FATTR4_WORD0_FILEID, | |
184 | FATTR4_WORD1_MODE | |
185 | | FATTR4_WORD1_NUMLINKS | |
186 | | FATTR4_WORD1_OWNER | |
187 | | FATTR4_WORD1_OWNER_GROUP | |
188 | | FATTR4_WORD1_RAWDEV | |
189 | | FATTR4_WORD1_SPACE_USED | |
190 | | FATTR4_WORD1_TIME_ACCESS | |
191 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
192 | | FATTR4_WORD1_TIME_MODIFY, |
193 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
194 | FATTR4_WORD2_SECURITY_LABEL | |
195 | #endif | |
1da177e4 LT |
196 | }; |
197 | ||
1549210f TM |
198 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
199 | FATTR4_WORD0_TYPE | |
200 | | FATTR4_WORD0_CHANGE | |
201 | | FATTR4_WORD0_SIZE | |
202 | | FATTR4_WORD0_FSID | |
203 | | FATTR4_WORD0_FILEID, | |
204 | FATTR4_WORD1_MODE | |
205 | | FATTR4_WORD1_NUMLINKS | |
206 | | FATTR4_WORD1_OWNER | |
207 | | FATTR4_WORD1_OWNER_GROUP | |
208 | | FATTR4_WORD1_RAWDEV | |
209 | | FATTR4_WORD1_SPACE_USED | |
210 | | FATTR4_WORD1_TIME_ACCESS | |
211 | | FATTR4_WORD1_TIME_METADATA | |
212 | | FATTR4_WORD1_TIME_MODIFY, | |
213 | FATTR4_WORD2_MDSTHRESHOLD | |
214 | }; | |
215 | ||
e23008ec AA |
216 | static const u32 nfs4_open_noattr_bitmap[3] = { |
217 | FATTR4_WORD0_TYPE | |
218 | | FATTR4_WORD0_CHANGE | |
219 | | FATTR4_WORD0_FILEID, | |
220 | }; | |
221 | ||
a09df2ca | 222 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
223 | FATTR4_WORD0_FILES_AVAIL |
224 | | FATTR4_WORD0_FILES_FREE | |
225 | | FATTR4_WORD0_FILES_TOTAL, | |
226 | FATTR4_WORD1_SPACE_AVAIL | |
227 | | FATTR4_WORD1_SPACE_FREE | |
228 | | FATTR4_WORD1_SPACE_TOTAL | |
229 | }; | |
230 | ||
a09df2ca | 231 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
232 | FATTR4_WORD0_MAXLINK |
233 | | FATTR4_WORD0_MAXNAME, | |
234 | 0 | |
235 | }; | |
236 | ||
dae100c2 | 237 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
238 | | FATTR4_WORD0_MAXREAD |
239 | | FATTR4_WORD0_MAXWRITE | |
240 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 241 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
242 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
243 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
244 | }; |
245 | ||
a09df2ca | 246 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
247 | FATTR4_WORD0_TYPE |
248 | | FATTR4_WORD0_CHANGE | |
249 | | FATTR4_WORD0_SIZE | |
250 | | FATTR4_WORD0_FSID | |
251 | | FATTR4_WORD0_FILEID | |
252 | | FATTR4_WORD0_FS_LOCATIONS, | |
253 | FATTR4_WORD1_MODE | |
254 | | FATTR4_WORD1_NUMLINKS | |
255 | | FATTR4_WORD1_OWNER | |
256 | | FATTR4_WORD1_OWNER_GROUP | |
257 | | FATTR4_WORD1_RAWDEV | |
258 | | FATTR4_WORD1_SPACE_USED | |
259 | | FATTR4_WORD1_TIME_ACCESS | |
260 | | FATTR4_WORD1_TIME_METADATA | |
261 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 262 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
263 | }; |
264 | ||
bc4785cd | 265 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
266 | struct nfs4_readdir_arg *readdir) |
267 | { | |
0dbb4c67 | 268 | __be32 *start, *p; |
1da177e4 | 269 | |
1da177e4 | 270 | if (cookie > 2) { |
b7ef1956 | 271 | readdir->cookie = cookie; |
1da177e4 LT |
272 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
273 | return; | |
274 | } | |
275 | ||
276 | readdir->cookie = 0; | |
277 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
278 | if (cookie == 2) | |
279 | return; | |
280 | ||
281 | /* | |
282 | * NFSv4 servers do not return entries for '.' and '..' | |
283 | * Therefore, we fake these entries here. We let '.' | |
284 | * have cookie 0 and '..' have cookie 1. Note that | |
285 | * when talking to the server, we always send cookie 0 | |
286 | * instead of 1 or 2. | |
287 | */ | |
2b86ce2d | 288 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
289 | |
290 | if (cookie == 0) { | |
291 | *p++ = xdr_one; /* next */ | |
292 | *p++ = xdr_zero; /* cookie, first word */ | |
293 | *p++ = xdr_one; /* cookie, second word */ | |
294 | *p++ = xdr_one; /* entry len */ | |
295 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
296 | p++; | |
297 | *p++ = xdr_one; /* bitmap length */ | |
298 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
299 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 300 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
301 | } |
302 | ||
303 | *p++ = xdr_one; /* next */ | |
304 | *p++ = xdr_zero; /* cookie, first word */ | |
305 | *p++ = xdr_two; /* cookie, second word */ | |
306 | *p++ = xdr_two; /* entry len */ | |
307 | memcpy(p, "..\0\0", 4); /* entry */ | |
308 | p++; | |
309 | *p++ = xdr_one; /* bitmap length */ | |
310 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
311 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 312 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
313 | |
314 | readdir->pgbase = (char *)p - (char *)start; | |
315 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 316 | kunmap_atomic(start); |
1da177e4 LT |
317 | } |
318 | ||
65de872e TM |
319 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
320 | { | |
321 | int res = 0; | |
322 | ||
323 | might_sleep(); | |
324 | ||
325 | if (*timeout <= 0) | |
326 | *timeout = NFS4_POLL_RETRY_MIN; | |
327 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
328 | *timeout = NFS4_POLL_RETRY_MAX; | |
416ad3c9 | 329 | freezable_schedule_timeout_killable_unsafe(*timeout); |
65de872e TM |
330 | if (fatal_signal_pending(current)) |
331 | res = -ERESTARTSYS; | |
332 | *timeout <<= 1; | |
333 | return res; | |
334 | } | |
335 | ||
336 | /* This is the error handling routine for processes that are allowed | |
337 | * to sleep. | |
338 | */ | |
b064eca2 | 339 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
340 | { |
341 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 342 | struct nfs4_state *state = exception->state; |
3114ea7a | 343 | struct inode *inode = exception->inode; |
65de872e TM |
344 | int ret = errorcode; |
345 | ||
346 | exception->retry = 0; | |
347 | switch(errorcode) { | |
348 | case 0: | |
349 | return 0; | |
3114ea7a | 350 | case -NFS4ERR_OPENMODE: |
011e2a7f | 351 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 352 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
353 | exception->retry = 1; |
354 | return 0; | |
355 | } | |
356 | if (state == NULL) | |
357 | break; | |
5d422301 TM |
358 | ret = nfs4_schedule_stateid_recovery(server, state); |
359 | if (ret < 0) | |
360 | break; | |
3114ea7a | 361 | goto wait_on_recovery; |
a1d0b5ee | 362 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
363 | case -NFS4ERR_ADMIN_REVOKED: |
364 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
365 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
366 | nfs_remove_bad_delegation(inode); | |
367 | exception->retry = 1; | |
368 | break; | |
369 | } | |
9e33bed5 TM |
370 | if (state == NULL) |
371 | break; | |
5d422301 TM |
372 | ret = nfs4_schedule_stateid_recovery(server, state); |
373 | if (ret < 0) | |
374 | break; | |
0400a6b0 | 375 | goto wait_on_recovery; |
0ced63d1 | 376 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
377 | if (state != NULL) { |
378 | ret = nfs4_schedule_stateid_recovery(server, state); | |
379 | if (ret < 0) | |
380 | break; | |
381 | } | |
65de872e | 382 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 383 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
384 | nfs4_schedule_lease_recovery(clp); |
385 | goto wait_on_recovery; | |
03391693 | 386 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
387 | case -NFS4ERR_BADSESSION: |
388 | case -NFS4ERR_BADSLOT: | |
389 | case -NFS4ERR_BAD_HIGH_SLOT: | |
390 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
391 | case -NFS4ERR_DEADSESSION: | |
392 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
393 | case -NFS4ERR_SEQ_MISORDERED: | |
394 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
395 | errorcode); | |
9f594791 | 396 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 397 | goto wait_on_recovery; |
03391693 | 398 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 399 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
400 | if (exception->timeout > HZ) { |
401 | /* We have retried a decent amount, time to | |
402 | * fail | |
403 | */ | |
404 | ret = -EBUSY; | |
405 | break; | |
406 | } | |
65de872e TM |
407 | case -NFS4ERR_GRACE: |
408 | case -NFS4ERR_DELAY: | |
409 | ret = nfs4_delay(server->client, &exception->timeout); | |
410 | if (ret != 0) | |
411 | break; | |
a8a4ae3a | 412 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
413 | case -NFS4ERR_OLD_STATEID: |
414 | exception->retry = 1; | |
b064eca2 TM |
415 | break; |
416 | case -NFS4ERR_BADOWNER: | |
417 | /* The following works around a Linux server bug! */ | |
418 | case -NFS4ERR_BADNAME: | |
419 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
420 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
421 | exception->retry = 1; | |
422 | printk(KERN_WARNING "NFS: v4 server %s " | |
423 | "does not accept raw " | |
424 | "uid/gids. " | |
425 | "Reenabling the idmapper.\n", | |
426 | server->nfs_client->cl_hostname); | |
427 | } | |
65de872e TM |
428 | } |
429 | /* We failed to handle the error */ | |
430 | return nfs4_map_errors(ret); | |
0400a6b0 | 431 | wait_on_recovery: |
a2c0b9e2 TM |
432 | ret = nfs4_wait_clnt_recover(clp); |
433 | if (ret == 0) | |
434 | exception->retry = 1; | |
435 | return ret; | |
65de872e TM |
436 | } |
437 | ||
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 | ||
cccef3b9 AA |
466 | #if defined(CONFIG_NFS_V4_1) |
467 | ||
d185a334 | 468 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 469 | { |
e3725ec0 | 470 | struct nfs4_session *session; |
13615871 | 471 | struct nfs4_slot_table *tbl; |
c10e4498 | 472 | bool send_new_highest_used_slotid = false; |
13615871 | 473 | |
dfb4f309 | 474 | if (!res->sr_slot) { |
13615871 AA |
475 | /* just wake up the next guy waiting since |
476 | * we may have not consumed a slot after all */ | |
691daf3b | 477 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 478 | return; |
13615871 | 479 | } |
e3725ec0 TM |
480 | tbl = res->sr_slot->table; |
481 | session = tbl->session; | |
ea028ac9 | 482 | |
35dc1d74 | 483 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
484 | /* Be nice to the server: try to ensure that the last transmitted |
485 | * value for highest_user_slotid <= target_highest_slotid | |
486 | */ | |
487 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
488 | send_new_highest_used_slotid = true; | |
489 | ||
b75ad4cd TM |
490 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
491 | send_new_highest_used_slotid = false; | |
492 | goto out_unlock; | |
493 | } | |
f4af6e2a | 494 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
495 | |
496 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
497 | send_new_highest_used_slotid = false; | |
b75ad4cd | 498 | out_unlock: |
35dc1d74 | 499 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 500 | res->sr_slot = NULL; |
c10e4498 TM |
501 | if (send_new_highest_used_slotid) |
502 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
503 | } |
504 | ||
14516c3a | 505 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 506 | { |
e3725ec0 | 507 | struct nfs4_session *session; |
933602e3 | 508 | struct nfs4_slot *slot; |
14516c3a | 509 | struct nfs_client *clp; |
ac20d163 | 510 | bool interrupted = false; |
85563073 | 511 | int ret = 1; |
b0df806c | 512 | |
468f8613 BS |
513 | /* don't increment the sequence number if the task wasn't sent */ |
514 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
515 | goto out; |
516 | ||
933602e3 | 517 | slot = res->sr_slot; |
e3725ec0 | 518 | session = slot->table->session; |
933602e3 | 519 | |
ac20d163 TM |
520 | if (slot->interrupted) { |
521 | slot->interrupted = 0; | |
522 | interrupted = true; | |
523 | } | |
524 | ||
2f92ae34 | 525 | trace_nfs4_sequence_done(session, res); |
691daf3b | 526 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
527 | switch (res->sr_status) { |
528 | case 0: | |
b0df806c | 529 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 530 | ++slot->seq_nr; |
e3725ec0 | 531 | clp = session->clp; |
8e63b6a8 | 532 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 533 | /* Check sequence flags */ |
b4410c2f TM |
534 | if (res->sr_status_flags != 0) |
535 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 536 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 537 | break; |
ac20d163 TM |
538 | case 1: |
539 | /* | |
540 | * sr_status remains 1 if an RPC level error occurred. | |
541 | * The server may or may not have processed the sequence | |
542 | * operation.. | |
543 | * Mark the slot as having hosted an interrupted RPC call. | |
544 | */ | |
545 | slot->interrupted = 1; | |
546 | goto out; | |
14516c3a TM |
547 | case -NFS4ERR_DELAY: |
548 | /* The server detected a resend of the RPC call and | |
549 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
550 | * of RFC5661. | |
551 | */ | |
df2fabff | 552 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 553 | __func__, |
df2fabff | 554 | slot->slot_nr, |
933602e3 | 555 | slot->seq_nr); |
14516c3a | 556 | goto out_retry; |
85563073 TM |
557 | case -NFS4ERR_BADSLOT: |
558 | /* | |
559 | * The slot id we used was probably retired. Try again | |
560 | * using a different slot id. | |
561 | */ | |
e8794440 TM |
562 | goto retry_nowait; |
563 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
564 | /* |
565 | * Was the last operation on this sequence interrupted? | |
566 | * If so, retry after bumping the sequence number. | |
567 | */ | |
568 | if (interrupted) { | |
569 | ++slot->seq_nr; | |
570 | goto retry_nowait; | |
571 | } | |
e8794440 TM |
572 | /* |
573 | * Could this slot have been previously retired? | |
574 | * If so, then the server may be expecting seq_nr = 1! | |
575 | */ | |
8e63b6a8 TM |
576 | if (slot->seq_nr != 1) { |
577 | slot->seq_nr = 1; | |
578 | goto retry_nowait; | |
579 | } | |
580 | break; | |
e8794440 TM |
581 | case -NFS4ERR_SEQ_FALSE_RETRY: |
582 | ++slot->seq_nr; | |
583 | goto retry_nowait; | |
14516c3a TM |
584 | default: |
585 | /* Just update the slot sequence no. */ | |
933602e3 | 586 | ++slot->seq_nr; |
b0df806c AA |
587 | } |
588 | out: | |
589 | /* The session may be reset by one of the error handlers. */ | |
590 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 591 | nfs41_sequence_free_slot(res); |
85563073 | 592 | return ret; |
e8794440 TM |
593 | retry_nowait: |
594 | if (rpc_restart_call_prepare(task)) { | |
595 | task->tk_status = 0; | |
596 | ret = 0; | |
597 | } | |
598 | goto out; | |
14516c3a | 599 | out_retry: |
d05dd4e9 | 600 | if (!rpc_restart_call(task)) |
14516c3a TM |
601 | goto out; |
602 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
603 | return 0; | |
b0df806c AA |
604 | } |
605 | ||
14516c3a TM |
606 | static int nfs4_sequence_done(struct rpc_task *task, |
607 | struct nfs4_sequence_res *res) | |
df896455 | 608 | { |
e3725ec0 | 609 | if (res->sr_slot == NULL) |
14516c3a TM |
610 | return 1; |
611 | return nfs41_sequence_done(task, res); | |
df896455 TM |
612 | } |
613 | ||
9d12b216 TM |
614 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
615 | struct nfs4_sequence_res *res, int cache_reply) | |
616 | { | |
2b2fa717 | 617 | args->sa_slot = NULL; |
9d12b216 | 618 | args->sa_cache_this = 0; |
8fe72bac | 619 | args->sa_privileged = 0; |
9d12b216 TM |
620 | if (cache_reply) |
621 | args->sa_cache_this = 1; | |
9d12b216 TM |
622 | res->sr_slot = NULL; |
623 | } | |
624 | ||
8fe72bac TM |
625 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
626 | { | |
627 | args->sa_privileged = 1; | |
628 | } | |
629 | ||
dc70d7b3 | 630 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
631 | struct nfs4_sequence_args *args, |
632 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
633 | struct rpc_task *task) |
634 | { | |
fbcd4abc AA |
635 | struct nfs4_slot *slot; |
636 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
637 | |
638 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 639 | /* slot already allocated? */ |
dfb4f309 | 640 | if (res->sr_slot != NULL) |
d9afbd1b | 641 | goto out_success; |
ce5039c1 | 642 | |
fbcd4abc AA |
643 | tbl = &session->fc_slot_table; |
644 | ||
69d206b5 TM |
645 | task->tk_timeout = 0; |
646 | ||
fbcd4abc | 647 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 648 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 649 | !args->sa_privileged) { |
0b1c8fc4 | 650 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 651 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 652 | goto out_sleep; |
689cf5c1 AB |
653 | } |
654 | ||
2dc03b7f | 655 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
656 | if (IS_ERR(slot)) { |
657 | /* If out of memory, try again in 1/4 second */ | |
658 | if (slot == ERR_PTR(-ENOMEM)) | |
659 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 660 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 661 | goto out_sleep; |
fbcd4abc AA |
662 | } |
663 | spin_unlock(&tbl->slot_tbl_lock); | |
664 | ||
2b2fa717 | 665 | args->sa_slot = slot; |
fbcd4abc | 666 | |
e8d92382 | 667 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 668 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 669 | |
dfb4f309 | 670 | res->sr_slot = slot; |
8e63b6a8 | 671 | res->sr_timestamp = jiffies; |
2a6e26cd | 672 | res->sr_status_flags = 0; |
fbcd4abc AA |
673 | /* |
674 | * sr_status is only set in decode_sequence, and so will remain | |
675 | * set to 1 if an rpc level failure occurs. | |
676 | */ | |
677 | res->sr_status = 1; | |
2f92ae34 | 678 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
679 | out_success: |
680 | rpc_call_start(task); | |
ce5039c1 | 681 | return 0; |
7b939a3f | 682 | out_sleep: |
8fe72bac TM |
683 | /* Privileged tasks are queued with top priority */ |
684 | if (args->sa_privileged) | |
1e1093c7 TM |
685 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
686 | NULL, RPC_PRIORITY_PRIVILEGED); | |
687 | else | |
688 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
689 | spin_unlock(&tbl->slot_tbl_lock); |
690 | return -EAGAIN; | |
ce5039c1 | 691 | } |
dc70d7b3 | 692 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 693 | |
035168ab | 694 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
695 | struct nfs4_sequence_args *args, |
696 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
697 | struct rpc_task *task) |
698 | { | |
035168ab | 699 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
700 | int ret = 0; |
701 | ||
d9afbd1b TM |
702 | if (session == NULL) { |
703 | rpc_call_start(task); | |
035168ab | 704 | goto out; |
d9afbd1b | 705 | } |
035168ab | 706 | |
e8d92382 | 707 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 708 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 709 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 710 | |
9d12b216 | 711 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
712 | out: |
713 | dprintk("<-- %s status=%d\n", __func__, ret); | |
714 | return ret; | |
715 | } | |
716 | ||
717 | struct nfs41_call_sync_data { | |
035168ab | 718 | const struct nfs_server *seq_server; |
ce5039c1 AA |
719 | struct nfs4_sequence_args *seq_args; |
720 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
721 | }; |
722 | ||
723 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
724 | { | |
725 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 726 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 727 | |
035168ab TM |
728 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
729 | ||
d9afbd1b | 730 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
731 | } |
732 | ||
69ab40c4 AA |
733 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
734 | { | |
735 | struct nfs41_call_sync_data *data = calldata; | |
736 | ||
14516c3a | 737 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
738 | } |
739 | ||
17280175 | 740 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 741 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 742 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
743 | }; |
744 | ||
7c513058 BS |
745 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
746 | struct nfs_server *server, | |
ce5039c1 AA |
747 | struct rpc_message *msg, |
748 | struct nfs4_sequence_args *args, | |
8fe72bac | 749 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
750 | { |
751 | int ret; | |
752 | struct rpc_task *task; | |
753 | struct nfs41_call_sync_data data = { | |
035168ab | 754 | .seq_server = server, |
ce5039c1 AA |
755 | .seq_args = args, |
756 | .seq_res = res, | |
ce5039c1 AA |
757 | }; |
758 | struct rpc_task_setup task_setup = { | |
7c513058 | 759 | .rpc_client = clnt, |
ce5039c1 AA |
760 | .rpc_message = msg, |
761 | .callback_ops = &nfs41_call_sync_ops, | |
762 | .callback_data = &data | |
763 | }; | |
764 | ||
ce5039c1 AA |
765 | task = rpc_run_task(&task_setup); |
766 | if (IS_ERR(task)) | |
767 | ret = PTR_ERR(task); | |
768 | else { | |
769 | ret = task->tk_status; | |
770 | rpc_put_task(task); | |
771 | } | |
772 | return ret; | |
773 | } | |
774 | ||
df896455 | 775 | #else |
8fe72bac | 776 | static |
9d12b216 TM |
777 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
778 | struct nfs4_sequence_res *res, int cache_reply) | |
779 | { | |
780 | } | |
781 | ||
8fe72bac TM |
782 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
783 | { | |
784 | } | |
785 | ||
786 | ||
14516c3a TM |
787 | static int nfs4_sequence_done(struct rpc_task *task, |
788 | struct nfs4_sequence_res *res) | |
df896455 | 789 | { |
14516c3a | 790 | return 1; |
df896455 | 791 | } |
cccef3b9 AA |
792 | #endif /* CONFIG_NFS_V4_1 */ |
793 | ||
fd0c0953 | 794 | static |
7c513058 BS |
795 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
796 | struct nfs_server *server, | |
cccef3b9 AA |
797 | struct rpc_message *msg, |
798 | struct nfs4_sequence_args *args, | |
fd0c0953 | 799 | struct nfs4_sequence_res *res) |
cccef3b9 | 800 | { |
7c513058 | 801 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
802 | } |
803 | ||
fd0c0953 | 804 | static |
7c513058 BS |
805 | int nfs4_call_sync(struct rpc_clnt *clnt, |
806 | struct nfs_server *server, | |
e73b83f2 BS |
807 | struct rpc_message *msg, |
808 | struct nfs4_sequence_args *args, | |
809 | struct nfs4_sequence_res *res, | |
810 | int cache_reply) | |
811 | { | |
fd0c0953 | 812 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 813 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 814 | args, res); |
e73b83f2 | 815 | } |
cccef3b9 | 816 | |
38478b24 | 817 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 818 | { |
38478b24 | 819 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 820 | |
38478b24 | 821 | spin_lock(&dir->i_lock); |
359d7d1c | 822 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 823 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 824 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 825 | dir->i_version = cinfo->after; |
de242c0b | 826 | nfs_fscache_invalidate(dir); |
38478b24 | 827 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
828 | } |
829 | ||
e56e0b78 | 830 | struct nfs4_opendata { |
c6d00e63 | 831 | struct kref kref; |
e56e0b78 TM |
832 | struct nfs_openargs o_arg; |
833 | struct nfs_openres o_res; | |
cdd4e68b TM |
834 | struct nfs_open_confirmargs c_arg; |
835 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
836 | struct nfs4_string owner_name; |
837 | struct nfs4_string group_name; | |
e56e0b78 | 838 | struct nfs_fattr f_attr; |
1775fd3e | 839 | struct nfs4_label *f_label; |
e56e0b78 | 840 | struct dentry *dir; |
82a2c1b7 | 841 | struct dentry *dentry; |
e56e0b78 | 842 | struct nfs4_state_owner *owner; |
aac00a8d | 843 | struct nfs4_state *state; |
e56e0b78 | 844 | struct iattr attrs; |
26e976a8 | 845 | unsigned long timestamp; |
3e309914 | 846 | unsigned int rpc_done : 1; |
bdeca1b7 | 847 | unsigned int is_recover : 1; |
24ac23ab TM |
848 | int rpc_status; |
849 | int cancelled; | |
e56e0b78 TM |
850 | }; |
851 | ||
49f9a0fa TM |
852 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
853 | int err, struct nfs4_exception *exception) | |
854 | { | |
855 | if (err != -EINVAL) | |
856 | return false; | |
857 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
858 | return false; | |
859 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
860 | exception->retry = 1; | |
861 | return true; | |
862 | } | |
863 | ||
864 | static enum open_claim_type4 | |
865 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
866 | enum open_claim_type4 claim) | |
867 | { | |
868 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
869 | return claim; | |
870 | switch (claim) { | |
871 | default: | |
872 | return claim; | |
873 | case NFS4_OPEN_CLAIM_FH: | |
874 | return NFS4_OPEN_CLAIM_NULL; | |
875 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
876 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
877 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
878 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
879 | } | |
880 | } | |
2ced46c2 TM |
881 | |
882 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
883 | { | |
884 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 885 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
886 | p->o_res.seqid = p->o_arg.seqid; |
887 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 888 | p->o_res.server = p->o_arg.server; |
5f657530 | 889 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 890 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 891 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
892 | } |
893 | ||
82a2c1b7 | 894 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 895 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 896 | const struct iattr *attrs, |
1775fd3e | 897 | struct nfs4_label *label, |
4a1c0893 | 898 | enum open_claim_type4 claim, |
8535b2be | 899 | gfp_t gfp_mask) |
e56e0b78 | 900 | { |
82a2c1b7 | 901 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
902 | struct inode *dir = parent->d_inode; |
903 | struct nfs_server *server = NFS_SERVER(dir); | |
904 | struct nfs4_opendata *p; | |
905 | ||
8535b2be | 906 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
907 | if (p == NULL) |
908 | goto err; | |
14c43f76 DQ |
909 | |
910 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
911 | if (IS_ERR(p->f_label)) | |
912 | goto err_free_p; | |
913 | ||
8535b2be | 914 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 915 | if (p->o_arg.seqid == NULL) |
14c43f76 | 916 | goto err_free_label; |
82a2c1b7 AV |
917 | nfs_sb_active(dentry->d_sb); |
918 | p->dentry = dget(dentry); | |
e56e0b78 TM |
919 | p->dir = parent; |
920 | p->owner = sp; | |
921 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
922 | p->o_arg.open_flags = flags; |
923 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
924 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
925 | * will return permission denied for all bits until close */ | |
926 | if (!(flags & O_EXCL)) { | |
927 | /* ask server to check for all possible rights as results | |
928 | * are cached */ | |
929 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
930 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 931 | } |
7539bbab | 932 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
933 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
934 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 935 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 936 | p->o_arg.server = server; |
aa9c2669 | 937 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 938 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 939 | p->o_arg.label = label; |
49f9a0fa TM |
940 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
941 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
942 | case NFS4_OPEN_CLAIM_NULL: |
943 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
944 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
945 | p->o_arg.fh = NFS_FH(dir); | |
946 | break; | |
947 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
948 | case NFS4_OPEN_CLAIM_FH: | |
949 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
950 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
951 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
952 | } | |
536e43d1 | 953 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 954 | __u32 verf[2]; |
d77d76ff | 955 | |
e56e0b78 TM |
956 | p->o_arg.u.attrs = &p->attrs; |
957 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
958 | |
959 | verf[0] = jiffies; | |
960 | verf[1] = current->pid; | |
961 | memcpy(p->o_arg.u.verifier.data, verf, | |
962 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 963 | } |
cdd4e68b TM |
964 | p->c_arg.fh = &p->o_res.fh; |
965 | p->c_arg.stateid = &p->o_res.stateid; | |
966 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 967 | nfs4_init_opendata_res(p); |
c6d00e63 | 968 | kref_init(&p->kref); |
e56e0b78 | 969 | return p; |
14c43f76 DQ |
970 | |
971 | err_free_label: | |
972 | nfs4_label_free(p->f_label); | |
973 | err_free_p: | |
e56e0b78 TM |
974 | kfree(p); |
975 | err: | |
976 | dput(parent); | |
977 | return NULL; | |
978 | } | |
979 | ||
c6d00e63 | 980 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 981 | { |
c6d00e63 TM |
982 | struct nfs4_opendata *p = container_of(kref, |
983 | struct nfs4_opendata, kref); | |
82a2c1b7 | 984 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
985 | |
986 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
987 | if (p->state != NULL) |
988 | nfs4_put_open_state(p->state); | |
c6d00e63 | 989 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
990 | |
991 | nfs4_label_free(p->f_label); | |
992 | ||
c6d00e63 | 993 | dput(p->dir); |
82a2c1b7 AV |
994 | dput(p->dentry); |
995 | nfs_sb_deactive(sb); | |
6926afd1 | 996 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
997 | kfree(p); |
998 | } | |
999 | ||
1000 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1001 | { | |
1002 | if (p != NULL) | |
1003 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1004 | } |
1005 | ||
06f814a3 TM |
1006 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1007 | { | |
06f814a3 TM |
1008 | int ret; |
1009 | ||
06f814a3 | 1010 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1011 | return ret; |
1012 | } | |
1013 | ||
dc0b027d | 1014 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1015 | { |
1016 | int ret = 0; | |
dc0b027d | 1017 | |
536e43d1 | 1018 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1019 | goto out; |
1020 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1021 | case FMODE_READ: |
88069f77 TM |
1022 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1023 | && state->n_rdonly != 0; | |
6ee41268 TM |
1024 | break; |
1025 | case FMODE_WRITE: | |
88069f77 TM |
1026 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1027 | && state->n_wronly != 0; | |
6ee41268 TM |
1028 | break; |
1029 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1030 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1031 | && state->n_rdwr != 0; | |
6ee41268 | 1032 | } |
dc0b027d | 1033 | out: |
6ee41268 TM |
1034 | return ret; |
1035 | } | |
1036 | ||
dc0b027d | 1037 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1038 | { |
652f89f6 TM |
1039 | if (delegation == NULL) |
1040 | return 0; | |
dc0b027d | 1041 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1042 | return 0; |
15c831bf | 1043 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1044 | return 0; |
d25be546 TM |
1045 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1046 | return 0; | |
b7391f44 | 1047 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1048 | return 1; |
1049 | } | |
1050 | ||
dc0b027d | 1051 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1052 | { |
dc0b027d | 1053 | switch (fmode) { |
e7616923 TM |
1054 | case FMODE_WRITE: |
1055 | state->n_wronly++; | |
1056 | break; | |
1057 | case FMODE_READ: | |
1058 | state->n_rdonly++; | |
1059 | break; | |
1060 | case FMODE_READ|FMODE_WRITE: | |
1061 | state->n_rdwr++; | |
1062 | } | |
dc0b027d | 1063 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1064 | } |
1065 | ||
dc0b027d | 1066 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1067 | { |
1068 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1069 | nfs4_stateid_copy(&state->stateid, stateid); |
1070 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 1071 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 1072 | switch (fmode) { |
003707c7 TM |
1073 | case FMODE_READ: |
1074 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1075 | break; | |
1076 | case FMODE_WRITE: | |
1077 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1078 | break; | |
1079 | case FMODE_READ|FMODE_WRITE: | |
1080 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1081 | } | |
e7616923 TM |
1082 | } |
1083 | ||
dc0b027d | 1084 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1085 | { |
8bda4e4c | 1086 | write_seqlock(&state->seqlock); |
dc0b027d | 1087 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1088 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1089 | } |
1090 | ||
dc0b027d | 1091 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1092 | { |
8bda4e4c TM |
1093 | /* |
1094 | * Protect the call to nfs4_state_set_mode_locked and | |
1095 | * serialise the stateid update | |
1096 | */ | |
1097 | write_seqlock(&state->seqlock); | |
003707c7 | 1098 | if (deleg_stateid != NULL) { |
f597c537 | 1099 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1100 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1101 | } | |
1102 | if (open_stateid != NULL) | |
dc0b027d | 1103 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1104 | write_sequnlock(&state->seqlock); |
1105 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1106 | update_open_stateflags(state, fmode); |
ec073428 | 1107 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1108 | } |
1109 | ||
dc0b027d | 1110 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1111 | { |
1112 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1113 | struct nfs_delegation *deleg_cur; | |
1114 | int ret = 0; | |
1115 | ||
dc0b027d | 1116 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1117 | |
1118 | rcu_read_lock(); | |
1119 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1120 | if (deleg_cur == NULL) | |
1121 | goto no_delegation; | |
1122 | ||
1123 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1124 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1125 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1126 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1127 | goto no_delegation_unlock; |
1128 | ||
1129 | if (delegation == NULL) | |
1130 | delegation = &deleg_cur->stateid; | |
f597c537 | 1131 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1132 | goto no_delegation_unlock; |
1133 | ||
b7391f44 | 1134 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1135 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1136 | ret = 1; |
1137 | no_delegation_unlock: | |
1138 | spin_unlock(&deleg_cur->lock); | |
1139 | no_delegation: | |
1140 | rcu_read_unlock(); | |
1141 | ||
1142 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1143 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1144 | ret = 1; |
1145 | } | |
1146 | ||
1147 | return ret; | |
1148 | } | |
1149 | ||
1150 | ||
dc0b027d | 1151 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1152 | { |
1153 | struct nfs_delegation *delegation; | |
1154 | ||
1155 | rcu_read_lock(); | |
1156 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1157 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1158 | rcu_read_unlock(); |
1159 | return; | |
1160 | } | |
1161 | rcu_read_unlock(); | |
57ec14c5 | 1162 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1163 | } |
1164 | ||
6ee41268 | 1165 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1166 | { |
1167 | struct nfs4_state *state = opendata->state; | |
1168 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1169 | struct nfs_delegation *delegation; | |
f448badd | 1170 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1171 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1172 | nfs4_stateid stateid; |
1173 | int ret = -EAGAIN; | |
1174 | ||
aac00a8d | 1175 | for (;;) { |
dc0b027d | 1176 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1177 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1178 | if (can_open_cached(state, fmode, open_mode)) { |
1179 | update_open_stateflags(state, fmode); | |
6ee41268 | 1180 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1181 | goto out_return_state; |
1182 | } | |
1183 | spin_unlock(&state->owner->so_lock); | |
1184 | } | |
34310430 TM |
1185 | rcu_read_lock(); |
1186 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1187 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1188 | rcu_read_unlock(); |
aac00a8d | 1189 | break; |
34310430 | 1190 | } |
aac00a8d | 1191 | /* Save the delegation */ |
f597c537 | 1192 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1193 | rcu_read_unlock(); |
fa332941 | 1194 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1195 | if (!opendata->is_recover) { |
1196 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1197 | if (ret != 0) | |
1198 | goto out; | |
1199 | } | |
aac00a8d | 1200 | ret = -EAGAIN; |
34310430 TM |
1201 | |
1202 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1203 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1204 | goto out_return_state; |
aac00a8d | 1205 | } |
aac00a8d TM |
1206 | out: |
1207 | return ERR_PTR(ret); | |
1208 | out_return_state: | |
1209 | atomic_inc(&state->count); | |
1210 | return state; | |
1211 | } | |
1212 | ||
e23008ec AA |
1213 | static void |
1214 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1215 | { | |
1216 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1217 | struct nfs_delegation *delegation; | |
1218 | int delegation_flags = 0; | |
1219 | ||
1220 | rcu_read_lock(); | |
1221 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1222 | if (delegation) | |
1223 | delegation_flags = delegation->flags; | |
1224 | rcu_read_unlock(); | |
1225 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1226 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1227 | "returning a delegation for " | |
1228 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1229 | clp->cl_hostname); | |
1230 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1231 | nfs_inode_set_delegation(state->inode, | |
1232 | data->owner->so_cred, | |
1233 | &data->o_res); | |
1234 | else | |
1235 | nfs_inode_reclaim_delegation(state->inode, | |
1236 | data->owner->so_cred, | |
1237 | &data->o_res); | |
1238 | } | |
1239 | ||
1240 | /* | |
1241 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1242 | * and update the nfs4_state. | |
1243 | */ | |
1244 | static struct nfs4_state * | |
1245 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1246 | { | |
1247 | struct inode *inode = data->state->inode; | |
1248 | struct nfs4_state *state = data->state; | |
1249 | int ret; | |
1250 | ||
1251 | if (!data->rpc_done) { | |
1252 | ret = data->rpc_status; | |
1253 | goto err; | |
1254 | } | |
1255 | ||
1256 | ret = -ESTALE; | |
1257 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1258 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1259 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1260 | goto err; | |
1261 | ||
1262 | ret = -ENOMEM; | |
1263 | state = nfs4_get_open_state(inode, data->owner); | |
1264 | if (state == NULL) | |
1265 | goto err; | |
1266 | ||
1267 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1268 | if (ret) | |
1269 | goto err; | |
1270 | ||
aa9c2669 DQ |
1271 | nfs_setsecurity(inode, &data->f_attr, data->f_label); |
1272 | ||
e23008ec AA |
1273 | if (data->o_res.delegation_type != 0) |
1274 | nfs4_opendata_check_deleg(data, state); | |
1275 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1276 | data->o_arg.fmode); | |
1277 | ||
1278 | return state; | |
1279 | err: | |
1280 | return ERR_PTR(ret); | |
1281 | ||
1282 | } | |
1283 | ||
1284 | static struct nfs4_state * | |
1285 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1286 | { |
1287 | struct inode *inode; | |
1288 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1289 | int ret; |
24ac23ab | 1290 | |
aac00a8d | 1291 | if (!data->rpc_done) { |
6ee41268 | 1292 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1293 | goto out; |
1294 | } | |
1295 | ||
1b370bc2 | 1296 | ret = -EAGAIN; |
24ac23ab | 1297 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1298 | goto err; |
1775fd3e | 1299 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1300 | ret = PTR_ERR(inode); |
03f28e3a | 1301 | if (IS_ERR(inode)) |
1b370bc2 TM |
1302 | goto err; |
1303 | ret = -ENOMEM; | |
24ac23ab TM |
1304 | state = nfs4_get_open_state(inode, data->owner); |
1305 | if (state == NULL) | |
1b370bc2 | 1306 | goto err_put_inode; |
e23008ec AA |
1307 | if (data->o_res.delegation_type != 0) |
1308 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1309 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1310 | data->o_arg.fmode); |
24ac23ab | 1311 | iput(inode); |
aac00a8d | 1312 | out: |
7aa262b5 | 1313 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1314 | return state; |
1b370bc2 TM |
1315 | err_put_inode: |
1316 | iput(inode); | |
1317 | err: | |
1318 | return ERR_PTR(ret); | |
24ac23ab TM |
1319 | } |
1320 | ||
e23008ec AA |
1321 | static struct nfs4_state * |
1322 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1323 | { | |
1324 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1325 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1326 | return _nfs4_opendata_to_nfs4_state(data); | |
1327 | } | |
1328 | ||
864472e9 TM |
1329 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1330 | { | |
1331 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1332 | struct nfs_open_context *ctx; | |
1333 | ||
1334 | spin_lock(&state->inode->i_lock); | |
1335 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1336 | if (ctx->state != state) | |
1337 | continue; | |
1338 | get_nfs_open_context(ctx); | |
1339 | spin_unlock(&state->inode->i_lock); | |
1340 | return ctx; | |
1341 | } | |
1342 | spin_unlock(&state->inode->i_lock); | |
1343 | return ERR_PTR(-ENOENT); | |
1344 | } | |
1345 | ||
4a1c0893 TM |
1346 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1347 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1348 | { |
1349 | struct nfs4_opendata *opendata; | |
1350 | ||
4a1c0893 | 1351 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1352 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1353 | if (opendata == NULL) |
1354 | return ERR_PTR(-ENOMEM); | |
1355 | opendata->state = state; | |
1356 | atomic_inc(&state->count); | |
1357 | return opendata; | |
1358 | } | |
1359 | ||
dc0b027d | 1360 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1361 | { |
2ced46c2 | 1362 | struct nfs4_state *newstate; |
864472e9 TM |
1363 | int ret; |
1364 | ||
dc0b027d TM |
1365 | opendata->o_arg.open_flags = 0; |
1366 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1367 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1368 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1369 | nfs4_init_opendata_res(opendata); | |
b257957e | 1370 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1371 | if (ret != 0) |
1372 | return ret; | |
2ced46c2 | 1373 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1374 | if (IS_ERR(newstate)) |
1375 | return PTR_ERR(newstate); | |
643168c2 | 1376 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1377 | *res = newstate; |
864472e9 TM |
1378 | return 0; |
1379 | } | |
1380 | ||
1381 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1382 | { | |
864472e9 | 1383 | struct nfs4_state *newstate; |
864472e9 TM |
1384 | int ret; |
1385 | ||
1386 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1387 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1388 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1389 | smp_rmb(); |
1390 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1391 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1392 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1393 | if (ret != 0) |
1394 | return ret; | |
2ced46c2 TM |
1395 | if (newstate != state) |
1396 | return -ESTALE; | |
864472e9 TM |
1397 | } |
1398 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1399 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1400 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1401 | if (ret != 0) |
1402 | return ret; | |
2ced46c2 TM |
1403 | if (newstate != state) |
1404 | return -ESTALE; | |
864472e9 TM |
1405 | } |
1406 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1407 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1408 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1409 | if (ret != 0) |
1410 | return ret; | |
2ced46c2 TM |
1411 | if (newstate != state) |
1412 | return -ESTALE; | |
864472e9 | 1413 | } |
1ac7e2fd TM |
1414 | /* |
1415 | * We may have performed cached opens for all three recoveries. | |
1416 | * Check if we need to update the current stateid. | |
1417 | */ | |
1418 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1419 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1420 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1421 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1422 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1423 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1424 | } |
864472e9 TM |
1425 | return 0; |
1426 | } | |
1427 | ||
1da177e4 LT |
1428 | /* |
1429 | * OPEN_RECLAIM: | |
1430 | * reclaim state on the server after a reboot. | |
1da177e4 | 1431 | */ |
539cd03a | 1432 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1433 | { |
1ac7e2fd | 1434 | struct nfs_delegation *delegation; |
864472e9 | 1435 | struct nfs4_opendata *opendata; |
dc0b027d | 1436 | fmode_t delegation_type = 0; |
1da177e4 LT |
1437 | int status; |
1438 | ||
4a1c0893 TM |
1439 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1440 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1441 | if (IS_ERR(opendata)) |
1442 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1443 | rcu_read_lock(); |
1444 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1445 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1446 | delegation_type = delegation->type; |
1ac7e2fd | 1447 | rcu_read_unlock(); |
864472e9 TM |
1448 | opendata->o_arg.u.delegation_type = delegation_type; |
1449 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1450 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1451 | return status; |
1452 | } | |
1453 | ||
539cd03a | 1454 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1455 | { |
1456 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1457 | struct nfs4_exception exception = { }; | |
1458 | int err; | |
1459 | do { | |
539cd03a | 1460 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1461 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1462 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1463 | continue; | |
168667c4 | 1464 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1465 | break; |
1466 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1467 | } while (exception.retry); |
1468 | return err; | |
1469 | } | |
1470 | ||
864472e9 TM |
1471 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1472 | { | |
1473 | struct nfs_open_context *ctx; | |
1474 | int ret; | |
1475 | ||
1476 | ctx = nfs4_state_find_open_context(state); | |
1477 | if (IS_ERR(ctx)) | |
91876b13 | 1478 | return -EAGAIN; |
539cd03a | 1479 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1480 | put_nfs_open_context(ctx); |
1481 | return ret; | |
1482 | } | |
1483 | ||
db4f2e63 | 1484 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1485 | { |
be76b5b6 TM |
1486 | switch (err) { |
1487 | default: | |
1488 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1489 | "%d.\n", __func__, err); | |
1490 | case 0: | |
1491 | case -ENOENT: | |
1492 | case -ESTALE: | |
1493 | break; | |
1494 | case -NFS4ERR_BADSESSION: | |
1495 | case -NFS4ERR_BADSLOT: | |
1496 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1497 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1498 | case -NFS4ERR_DEADSESSION: | |
1499 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1500 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1501 | return -EAGAIN; | |
1502 | case -NFS4ERR_STALE_CLIENTID: | |
1503 | case -NFS4ERR_STALE_STATEID: | |
1504 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1505 | case -NFS4ERR_EXPIRED: | |
1506 | /* Don't recall a delegation if it was lost */ | |
1507 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1508 | return -EAGAIN; | |
1509 | case -NFS4ERR_DELEG_REVOKED: | |
1510 | case -NFS4ERR_ADMIN_REVOKED: | |
1511 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1512 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1513 | nfs_inode_find_state_and_recover(state->inode, |
1514 | stateid); | |
1515 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1516 | return 0; |
1517 | case -NFS4ERR_DELAY: | |
1518 | case -NFS4ERR_GRACE: | |
1519 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1520 | ssleep(1); | |
1521 | return -EAGAIN; | |
db4f2e63 TM |
1522 | case -ENOMEM: |
1523 | case -NFS4ERR_DENIED: | |
1524 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1525 | return 0; | |
be76b5b6 | 1526 | } |
1da177e4 LT |
1527 | return err; |
1528 | } | |
1529 | ||
db4f2e63 TM |
1530 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1531 | { | |
1532 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1533 | struct nfs4_opendata *opendata; | |
1534 | int err; | |
1535 | ||
1536 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1537 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1538 | if (IS_ERR(opendata)) | |
1539 | return PTR_ERR(opendata); | |
1540 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1541 | err = nfs4_open_recover(opendata, state); | |
1542 | nfs4_opendata_put(opendata); | |
1543 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1544 | } | |
1545 | ||
cdd4e68b TM |
1546 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1547 | { | |
1548 | struct nfs4_opendata *data = calldata; | |
1549 | ||
1550 | data->rpc_status = task->tk_status; | |
26e976a8 | 1551 | if (data->rpc_status == 0) { |
f597c537 | 1552 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1553 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1554 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1555 | data->rpc_done = 1; |
26e976a8 | 1556 | } |
cdd4e68b TM |
1557 | } |
1558 | ||
1559 | static void nfs4_open_confirm_release(void *calldata) | |
1560 | { | |
1561 | struct nfs4_opendata *data = calldata; | |
1562 | struct nfs4_state *state = NULL; | |
1563 | ||
1564 | /* If this request hasn't been cancelled, do nothing */ | |
1565 | if (data->cancelled == 0) | |
1566 | goto out_free; | |
1567 | /* In case of error, no cleanup! */ | |
3e309914 | 1568 | if (!data->rpc_done) |
cdd4e68b | 1569 | goto out_free; |
cdd4e68b | 1570 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1571 | if (!IS_ERR(state)) |
643168c2 | 1572 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1573 | out_free: |
c6d00e63 | 1574 | nfs4_opendata_put(data); |
cdd4e68b TM |
1575 | } |
1576 | ||
1577 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1578 | .rpc_call_done = nfs4_open_confirm_done, |
1579 | .rpc_release = nfs4_open_confirm_release, | |
1580 | }; | |
1581 | ||
1582 | /* | |
1583 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1584 | */ | |
1585 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1586 | { | |
1587 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1588 | struct rpc_task *task; | |
5138fde0 TM |
1589 | struct rpc_message msg = { |
1590 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1591 | .rpc_argp = &data->c_arg, | |
1592 | .rpc_resp = &data->c_res, | |
1593 | .rpc_cred = data->owner->so_cred, | |
1594 | }; | |
c970aa85 TM |
1595 | struct rpc_task_setup task_setup_data = { |
1596 | .rpc_client = server->client, | |
5138fde0 | 1597 | .rpc_message = &msg, |
c970aa85 TM |
1598 | .callback_ops = &nfs4_open_confirm_ops, |
1599 | .callback_data = data, | |
101070ca | 1600 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1601 | .flags = RPC_TASK_ASYNC, |
1602 | }; | |
1da177e4 LT |
1603 | int status; |
1604 | ||
c6d00e63 | 1605 | kref_get(&data->kref); |
3e309914 TM |
1606 | data->rpc_done = 0; |
1607 | data->rpc_status = 0; | |
5138fde0 | 1608 | data->timestamp = jiffies; |
c970aa85 | 1609 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1610 | if (IS_ERR(task)) |
cdd4e68b | 1611 | return PTR_ERR(task); |
cdd4e68b TM |
1612 | status = nfs4_wait_for_completion_rpc_task(task); |
1613 | if (status != 0) { | |
1614 | data->cancelled = 1; | |
1615 | smp_wmb(); | |
1616 | } else | |
1617 | status = data->rpc_status; | |
e6b3c4db | 1618 | rpc_put_task(task); |
1da177e4 LT |
1619 | return status; |
1620 | } | |
1621 | ||
24ac23ab | 1622 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1623 | { |
24ac23ab TM |
1624 | struct nfs4_opendata *data = calldata; |
1625 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1626 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1627 | |
24ac23ab | 1628 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1629 | goto out_wait; |
aac00a8d TM |
1630 | /* |
1631 | * Check if we still need to send an OPEN call, or if we can use | |
1632 | * a delegation instead. | |
1633 | */ | |
1634 | if (data->state != NULL) { | |
1635 | struct nfs_delegation *delegation; | |
1636 | ||
dc0b027d | 1637 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1638 | goto out_no_action; |
aac00a8d TM |
1639 | rcu_read_lock(); |
1640 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1641 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1642 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1643 | can_open_delegated(delegation, data->o_arg.fmode)) |
1644 | goto unlock_no_action; | |
aac00a8d TM |
1645 | rcu_read_unlock(); |
1646 | } | |
95b72eb0 | 1647 | /* Update client id. */ |
549b19cc | 1648 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1649 | switch (data->o_arg.claim) { |
1650 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1651 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1652 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1653 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1654 | case NFS4_OPEN_CLAIM_FH: |
1655 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1656 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1657 | } | |
26e976a8 | 1658 | data->timestamp = jiffies; |
035168ab | 1659 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1660 | &data->o_arg.seq_args, |
2240a9e2 TM |
1661 | &data->o_res.seq_res, |
1662 | task) != 0) | |
1663 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1664 | |
1665 | /* Set the create mode (note dependency on the session type) */ | |
1666 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1667 | if (data->o_arg.open_flags & O_EXCL) { | |
1668 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1669 | if (nfs4_has_persistent_session(clp)) | |
1670 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1671 | else if (clp->cl_mvops->minor_version > 0) | |
1672 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1673 | } | |
6ee41268 | 1674 | return; |
652f89f6 TM |
1675 | unlock_no_action: |
1676 | rcu_read_unlock(); | |
6ee41268 TM |
1677 | out_no_action: |
1678 | task->tk_action = NULL; | |
c8da19b9 | 1679 | out_wait: |
b75ad4cd | 1680 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1681 | } |
1682 | ||
24ac23ab TM |
1683 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1684 | { | |
1685 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1686 | |
24ac23ab | 1687 | data->rpc_status = task->tk_status; |
d898528c | 1688 | |
14516c3a TM |
1689 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1690 | return; | |
d898528c | 1691 | |
24ac23ab | 1692 | if (task->tk_status == 0) { |
807d66d8 TM |
1693 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1694 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1695 | case S_IFREG: |
1696 | break; | |
1697 | case S_IFLNK: | |
24ac23ab | 1698 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1699 | break; |
1700 | case S_IFDIR: | |
24ac23ab | 1701 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1702 | break; |
1703 | default: | |
24ac23ab | 1704 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1705 | } |
6f926b5b | 1706 | } |
26e976a8 | 1707 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1708 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1709 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1710 | } |
3e309914 | 1711 | data->rpc_done = 1; |
24ac23ab | 1712 | } |
6f926b5b | 1713 | |
24ac23ab TM |
1714 | static void nfs4_open_release(void *calldata) |
1715 | { | |
1716 | struct nfs4_opendata *data = calldata; | |
1717 | struct nfs4_state *state = NULL; | |
1718 | ||
1719 | /* If this request hasn't been cancelled, do nothing */ | |
1720 | if (data->cancelled == 0) | |
1721 | goto out_free; | |
1722 | /* In case of error, no cleanup! */ | |
3e309914 | 1723 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1724 | goto out_free; |
1725 | /* In case we need an open_confirm, no cleanup! */ | |
1726 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1727 | goto out_free; | |
24ac23ab | 1728 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1729 | if (!IS_ERR(state)) |
643168c2 | 1730 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1731 | out_free: |
c6d00e63 | 1732 | nfs4_opendata_put(data); |
24ac23ab TM |
1733 | } |
1734 | ||
1735 | static const struct rpc_call_ops nfs4_open_ops = { | |
1736 | .rpc_call_prepare = nfs4_open_prepare, | |
1737 | .rpc_call_done = nfs4_open_done, | |
1738 | .rpc_release = nfs4_open_release, | |
1739 | }; | |
1740 | ||
b257957e | 1741 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1742 | { |
1743 | struct inode *dir = data->dir->d_inode; | |
1744 | struct nfs_server *server = NFS_SERVER(dir); | |
1745 | struct nfs_openargs *o_arg = &data->o_arg; | |
1746 | struct nfs_openres *o_res = &data->o_res; | |
1747 | struct rpc_task *task; | |
5138fde0 TM |
1748 | struct rpc_message msg = { |
1749 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1750 | .rpc_argp = o_arg, | |
1751 | .rpc_resp = o_res, | |
1752 | .rpc_cred = data->owner->so_cred, | |
1753 | }; | |
c970aa85 TM |
1754 | struct rpc_task_setup task_setup_data = { |
1755 | .rpc_client = server->client, | |
5138fde0 | 1756 | .rpc_message = &msg, |
c970aa85 TM |
1757 | .callback_ops = &nfs4_open_ops, |
1758 | .callback_data = data, | |
101070ca | 1759 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1760 | .flags = RPC_TASK_ASYNC, |
1761 | }; | |
24ac23ab TM |
1762 | int status; |
1763 | ||
9d12b216 | 1764 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1765 | kref_get(&data->kref); |
3e309914 TM |
1766 | data->rpc_done = 0; |
1767 | data->rpc_status = 0; | |
2ced46c2 | 1768 | data->cancelled = 0; |
bdeca1b7 TM |
1769 | data->is_recover = 0; |
1770 | if (isrecover) { | |
8fe72bac | 1771 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1772 | data->is_recover = 1; |
1773 | } | |
c970aa85 | 1774 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1775 | if (IS_ERR(task)) |
1776 | return PTR_ERR(task); | |
1777 | status = nfs4_wait_for_completion_rpc_task(task); | |
1778 | if (status != 0) { | |
1779 | data->cancelled = 1; | |
1780 | smp_wmb(); | |
1781 | } else | |
1782 | status = data->rpc_status; | |
1783 | rpc_put_task(task); | |
1784 | ||
1785 | return status; | |
1786 | } | |
1787 | ||
1788 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1789 | { | |
1790 | struct inode *dir = data->dir->d_inode; | |
1791 | struct nfs_openres *o_res = &data->o_res; | |
1792 | int status; | |
1793 | ||
1794 | status = nfs4_run_open_task(data, 1); | |
1795 | if (status != 0 || !data->rpc_done) | |
1796 | return status; | |
1797 | ||
6926afd1 TM |
1798 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1799 | ||
b257957e AB |
1800 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1801 | status = _nfs4_proc_open_confirm(data); | |
1802 | if (status != 0) | |
1803 | return status; | |
1804 | } | |
1805 | ||
1806 | return status; | |
1807 | } | |
1808 | ||
6168f62c WAA |
1809 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1810 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1811 | struct nfs4_state *state, fmode_t fmode, |
1812 | int openflags) | |
6168f62c WAA |
1813 | { |
1814 | struct nfs_access_entry cache; | |
1815 | u32 mask; | |
1816 | ||
1817 | /* access call failed or for some reason the server doesn't | |
1818 | * support any access modes -- defer access call until later */ | |
1819 | if (opendata->o_res.access_supported == 0) | |
1820 | return 0; | |
1821 | ||
1822 | mask = 0; | |
bbd3a8ee | 1823 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1824 | * write mode bits, but POSIX allows the creating process to write. |
1825 | * use openflags to check for exec, because fmode won't | |
1826 | * always have FMODE_EXEC set when file open for exec. */ | |
1827 | if (openflags & __FMODE_EXEC) { | |
1828 | /* ONLY check for exec rights */ | |
1829 | mask = MAY_EXEC; | |
1830 | } else if (fmode & FMODE_READ) | |
1831 | mask = MAY_READ; | |
6168f62c WAA |
1832 | |
1833 | cache.cred = cred; | |
1834 | cache.jiffies = jiffies; | |
1835 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1836 | nfs_access_add_cache(state->inode, &cache); | |
1837 | ||
bbd3a8ee | 1838 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1839 | return 0; |
1840 | ||
1841 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1842 | nfs4_close_state(state, fmode); | |
998f40b5 | 1843 | return -EACCES; |
6168f62c WAA |
1844 | } |
1845 | ||
b257957e AB |
1846 | /* |
1847 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1848 | */ | |
1849 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1850 | { | |
1851 | struct inode *dir = data->dir->d_inode; | |
1852 | struct nfs_server *server = NFS_SERVER(dir); | |
1853 | struct nfs_openargs *o_arg = &data->o_arg; | |
1854 | struct nfs_openres *o_res = &data->o_res; | |
1855 | int status; | |
1856 | ||
1857 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1858 | if (!data->rpc_done) |
1859 | return status; | |
1860 | if (status != 0) { | |
1861 | if (status == -NFS4ERR_BADNAME && | |
1862 | !(o_arg->open_flags & O_CREAT)) | |
1863 | return -ENOENT; | |
24ac23ab | 1864 | return status; |
08ef7bd3 | 1865 | } |
24ac23ab | 1866 | |
6926afd1 TM |
1867 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1868 | ||
90ff0c54 | 1869 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1870 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1871 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1872 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1873 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1874 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1875 | if (status != 0) |
24ac23ab | 1876 | return status; |
1da177e4 LT |
1877 | } |
1878 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1879 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1880 | return 0; |
1da177e4 LT |
1881 | } |
1882 | ||
d83217c1 AA |
1883 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1884 | { | |
1885 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1886 | } | |
1887 | ||
1da177e4 LT |
1888 | /* |
1889 | * OPEN_EXPIRED: | |
1890 | * reclaim state on the server after a network partition. | |
1891 | * Assumes caller holds the appropriate lock | |
1892 | */ | |
539cd03a | 1893 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1894 | { |
e56e0b78 | 1895 | struct nfs4_opendata *opendata; |
864472e9 | 1896 | int ret; |
1da177e4 | 1897 | |
4a1c0893 | 1898 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1899 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1900 | if (IS_ERR(opendata)) |
1901 | return PTR_ERR(opendata); | |
864472e9 | 1902 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1903 | if (ret == -ESTALE) |
3d4ff43d | 1904 | d_drop(ctx->dentry); |
c6d00e63 | 1905 | nfs4_opendata_put(opendata); |
864472e9 | 1906 | return ret; |
1da177e4 LT |
1907 | } |
1908 | ||
a9ed2e25 | 1909 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1910 | { |
539cd03a | 1911 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1912 | struct nfs4_exception exception = { }; |
1913 | int err; | |
1914 | ||
1915 | do { | |
539cd03a | 1916 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 1917 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
1918 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1919 | continue; | |
a9ed2e25 TM |
1920 | switch (err) { |
1921 | default: | |
1922 | goto out; | |
1923 | case -NFS4ERR_GRACE: | |
1924 | case -NFS4ERR_DELAY: | |
1925 | nfs4_handle_exception(server, err, &exception); | |
1926 | err = 0; | |
1927 | } | |
202b50dc | 1928 | } while (exception.retry); |
a9ed2e25 | 1929 | out: |
202b50dc TM |
1930 | return err; |
1931 | } | |
1932 | ||
1da177e4 LT |
1933 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1934 | { | |
1da177e4 | 1935 | struct nfs_open_context *ctx; |
864472e9 | 1936 | int ret; |
1da177e4 | 1937 | |
864472e9 TM |
1938 | ctx = nfs4_state_find_open_context(state); |
1939 | if (IS_ERR(ctx)) | |
91876b13 | 1940 | return -EAGAIN; |
539cd03a | 1941 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1942 | put_nfs_open_context(ctx); |
1943 | return ret; | |
1da177e4 LT |
1944 | } |
1945 | ||
f062eb6c | 1946 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1947 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1948 | { |
f062eb6c | 1949 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 1950 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
1951 | struct nfs_delegation *delegation; |
1952 | struct rpc_cred *cred = NULL; | |
1953 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
1954 | |
1955 | /* If a state reset has been done, test_stateid is unneeded */ | |
1956 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1957 | return; | |
1958 | ||
ab7cb0df TM |
1959 | /* Get the delegation credential for use by test/free_stateid */ |
1960 | rcu_read_lock(); | |
1961 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1962 | if (delegation != NULL && | |
1963 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
1964 | cred = get_rpccred(delegation->cred); | |
1965 | rcu_read_unlock(); | |
1966 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 1967 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
1968 | } else |
1969 | rcu_read_unlock(); | |
1970 | ||
3e60ffdd CL |
1971 | if (status != NFS_OK) { |
1972 | /* Free the stateid unless the server explicitly | |
1973 | * informs us the stateid is unrecognized. */ | |
1974 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1975 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 1976 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1977 | |
6938867e BS |
1978 | write_seqlock(&state->seqlock); |
1979 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1980 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1981 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1982 | } | |
ab7cb0df TM |
1983 | |
1984 | if (cred != NULL) | |
1985 | put_rpccred(cred); | |
3e60ffdd CL |
1986 | } |
1987 | ||
1988 | /** | |
1989 | * nfs41_check_open_stateid - possibly free an open stateid | |
1990 | * | |
1991 | * @state: NFSv4 state for an inode | |
1992 | * | |
1993 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1994 | * Otherwise a negative NFS4ERR value is returned. | |
1995 | */ | |
1996 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1997 | { | |
1998 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1999 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2000 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2001 | int status; |
2002 | ||
2003 | /* If a state reset has been done, test_stateid is unneeded */ | |
2004 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2005 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2006 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2007 | return -NFS4ERR_BAD_STATEID; | |
2008 | ||
ab7cb0df | 2009 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2010 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2011 | if (status != NFS_OK) { |
2012 | /* Free the stateid unless the server explicitly | |
2013 | * informs us the stateid is unrecognized. */ | |
2014 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2015 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2016 | |
2017 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2018 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2019 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2020 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2021 | } |
2022 | return status; | |
2023 | } | |
2024 | ||
2025 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2026 | { | |
eb64cf96 | 2027 | int status; |
b01dd1d8 | 2028 | |
3e60ffdd CL |
2029 | nfs41_clear_delegation_stateid(state); |
2030 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2031 | if (status != NFS_OK) |
2032 | status = nfs4_open_expired(sp, state); | |
2033 | return status; | |
f062eb6c BS |
2034 | } |
2035 | #endif | |
2036 | ||
aa53ed54 JL |
2037 | /* |
2038 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2039 | * fields corresponding to attributes that were used to store the verifier. | |
2040 | * Make sure we clobber those fields in the later setattr call | |
2041 | */ | |
2042 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2043 | { | |
2044 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2045 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2046 | sattr->ia_valid |= ATTR_ATIME; | |
2047 | ||
2048 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2049 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2050 | sattr->ia_valid |= ATTR_MTIME; | |
2051 | } | |
2052 | ||
c21443c2 TM |
2053 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2054 | fmode_t fmode, | |
2055 | int flags, | |
3efb9722 | 2056 | struct nfs_open_context *ctx) |
c21443c2 TM |
2057 | { |
2058 | struct nfs4_state_owner *sp = opendata->owner; | |
2059 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2060 | struct dentry *dentry; |
c21443c2 TM |
2061 | struct nfs4_state *state; |
2062 | unsigned int seq; | |
2063 | int ret; | |
2064 | ||
2065 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2066 | ||
2067 | ret = _nfs4_proc_open(opendata); | |
2068 | if (ret != 0) | |
2069 | goto out; | |
2070 | ||
2071 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2072 | ret = PTR_ERR(state); | |
2073 | if (IS_ERR(state)) | |
2074 | goto out; | |
2075 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2076 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2077 | ||
275bb307 TM |
2078 | dentry = opendata->dentry; |
2079 | if (dentry->d_inode == NULL) { | |
2080 | /* FIXME: Is this d_drop() ever needed? */ | |
2081 | d_drop(dentry); | |
2082 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2083 | if (dentry == NULL) { | |
2084 | dentry = opendata->dentry; | |
2085 | } else if (dentry != ctx->dentry) { | |
2086 | dput(ctx->dentry); | |
2087 | ctx->dentry = dget(dentry); | |
2088 | } | |
2089 | nfs_set_verifier(dentry, | |
2090 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2091 | } | |
2092 | ||
c21443c2 TM |
2093 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2094 | if (ret != 0) | |
2095 | goto out; | |
2096 | ||
3efb9722 | 2097 | ctx->state = state; |
c45ffdd2 TM |
2098 | if (dentry->d_inode == state->inode) { |
2099 | nfs_inode_attach_open_context(ctx); | |
2100 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2101 | nfs4_schedule_stateid_recovery(server, state); | |
2102 | } | |
c21443c2 TM |
2103 | out: |
2104 | return ret; | |
2105 | } | |
2106 | ||
1da177e4 | 2107 | /* |
24ac23ab | 2108 | * Returns a referenced nfs4_state |
1da177e4 | 2109 | */ |
82be417a | 2110 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2111 | struct nfs_open_context *ctx, |
82be417a AA |
2112 | int flags, |
2113 | struct iattr *sattr, | |
959d921f | 2114 | struct nfs4_label *label) |
1da177e4 LT |
2115 | { |
2116 | struct nfs4_state_owner *sp; | |
2117 | struct nfs4_state *state = NULL; | |
2118 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2119 | struct nfs4_opendata *opendata; |
4197a055 TM |
2120 | struct dentry *dentry = ctx->dentry; |
2121 | struct rpc_cred *cred = ctx->cred; | |
2122 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2123 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2124 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2125 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2126 | int status; |
1da177e4 LT |
2127 | |
2128 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2129 | status = -ENOMEM; |
d1e284d5 TM |
2130 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2131 | if (sp == NULL) { | |
1da177e4 LT |
2132 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2133 | goto out_err; | |
2134 | } | |
58d9714a TM |
2135 | status = nfs4_recover_expired_lease(server); |
2136 | if (status != 0) | |
b4454fe1 | 2137 | goto err_put_state_owner; |
82a2c1b7 AV |
2138 | if (dentry->d_inode != NULL) |
2139 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2140 | status = -ENOMEM; |
49f9a0fa TM |
2141 | if (dentry->d_inode) |
2142 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2143 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2144 | label, claim, GFP_KERNEL); |
e56e0b78 | 2145 | if (opendata == NULL) |
95d35cb4 | 2146 | goto err_put_state_owner; |
1da177e4 | 2147 | |
14c43f76 DQ |
2148 | if (label) { |
2149 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2150 | if (IS_ERR(olabel)) { | |
2151 | status = PTR_ERR(olabel); | |
2152 | goto err_opendata_put; | |
2153 | } | |
2154 | } | |
2155 | ||
82be417a AA |
2156 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2157 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2158 | if (!opendata->f_attr.mdsthreshold) | |
14c43f76 | 2159 | goto err_free_label; |
1549210f | 2160 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2161 | } |
82a2c1b7 AV |
2162 | if (dentry->d_inode != NULL) |
2163 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2164 | |
3efb9722 | 2165 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2166 | if (status != 0) |
14c43f76 | 2167 | goto err_free_label; |
3efb9722 | 2168 | state = ctx->state; |
6168f62c | 2169 | |
549b19cc TM |
2170 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2171 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2172 | nfs4_exclusive_attrset(opendata, sattr); |
2173 | ||
2174 | nfs_fattr_init(opendata->o_res.f_attr); | |
2175 | status = nfs4_do_setattr(state->inode, cred, | |
2176 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2177 | state, label, olabel); |
2178 | if (status == 0) { | |
0ab64e0e | 2179 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2180 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2181 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2182 | } |
0ab64e0e | 2183 | } |
82be417a AA |
2184 | |
2185 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2186 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2187 | else | |
2188 | kfree(opendata->f_attr.mdsthreshold); | |
2189 | opendata->f_attr.mdsthreshold = NULL; | |
2190 | ||
14c43f76 DQ |
2191 | nfs4_label_free(olabel); |
2192 | ||
c6d00e63 | 2193 | nfs4_opendata_put(opendata); |
1da177e4 | 2194 | nfs4_put_state_owner(sp); |
1da177e4 | 2195 | return 0; |
14c43f76 DQ |
2196 | err_free_label: |
2197 | nfs4_label_free(olabel); | |
c6d00e63 | 2198 | err_opendata_put: |
82be417a | 2199 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2200 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2201 | err_put_state_owner: |
2202 | nfs4_put_state_owner(sp); | |
1da177e4 | 2203 | out_err: |
1da177e4 LT |
2204 | return status; |
2205 | } | |
2206 | ||
2207 | ||
82be417a | 2208 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2209 | struct nfs_open_context *ctx, |
82be417a AA |
2210 | int flags, |
2211 | struct iattr *sattr, | |
959d921f | 2212 | struct nfs4_label *label) |
1da177e4 | 2213 | { |
49f9a0fa | 2214 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2215 | struct nfs4_exception exception = { }; |
2216 | struct nfs4_state *res; | |
2217 | int status; | |
2218 | ||
2219 | do { | |
959d921f | 2220 | status = _nfs4_do_open(dir, ctx, flags, sattr, label); |
3efb9722 | 2221 | res = ctx->state; |
42113a75 | 2222 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2223 | if (status == 0) |
2224 | break; | |
2225 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2226 | * book-keeping w.r.t. state-changing operations | |
2227 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2228 | * It is actually a sign of a bug on the client or on the server. | |
2229 | * | |
2230 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2231 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2232 | * have unhashed the old state_owner for us, and that we can |
2233 | * therefore safely retry using a new one. We should still warn | |
2234 | * the user though... | |
2235 | */ | |
2236 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2237 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2238 | " returned a bad sequence-id error!\n", |
2239 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2240 | exception.retry = 1; |
2241 | continue; | |
2242 | } | |
550f5747 TM |
2243 | /* |
2244 | * BAD_STATEID on OPEN means that the server cancelled our | |
2245 | * state before it received the OPEN_CONFIRM. | |
2246 | * Recover by retrying the request as per the discussion | |
2247 | * on Page 181 of RFC3530. | |
2248 | */ | |
2249 | if (status == -NFS4ERR_BAD_STATEID) { | |
2250 | exception.retry = 1; | |
2251 | continue; | |
2252 | } | |
aac00a8d TM |
2253 | if (status == -EAGAIN) { |
2254 | /* We must have found a delegation */ | |
2255 | exception.retry = 1; | |
2256 | continue; | |
2257 | } | |
49f9a0fa TM |
2258 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2259 | continue; | |
2260 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2261 | status, &exception)); |
2262 | } while (exception.retry); | |
2263 | return res; | |
2264 | } | |
2265 | ||
659bfcd6 TM |
2266 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2267 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2268 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2269 | struct nfs4_label *olabel) | |
1da177e4 | 2270 | { |
3e4f6290 | 2271 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2272 | struct nfs_setattrargs arg = { |
3e4f6290 | 2273 | .fh = NFS_FH(inode), |
1da177e4 LT |
2274 | .iap = sattr, |
2275 | .server = server, | |
2276 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2277 | .label = ilabel, |
1da177e4 LT |
2278 | }; |
2279 | struct nfs_setattrres res = { | |
2280 | .fattr = fattr, | |
1775fd3e | 2281 | .label = olabel, |
1da177e4 LT |
2282 | .server = server, |
2283 | }; | |
2284 | struct rpc_message msg = { | |
659bfcd6 TM |
2285 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2286 | .rpc_argp = &arg, | |
2287 | .rpc_resp = &res, | |
2288 | .rpc_cred = cred, | |
1da177e4 | 2289 | }; |
26e976a8 | 2290 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2291 | fmode_t fmode; |
2292 | bool truncate; | |
65e4308d | 2293 | int status; |
1da177e4 | 2294 | |
aa9c2669 DQ |
2295 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2296 | if (ilabel) | |
2297 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2298 | ||
0e574af1 | 2299 | nfs_fattr_init(fattr); |
1da177e4 | 2300 | |
ee3ae84e TM |
2301 | /* Servers should only apply open mode checks for file size changes */ |
2302 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2303 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2304 | ||
2305 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2306 | /* Use that stateid */ | |
2307 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2308 | struct nfs_lockowner lockowner = { |
2309 | .l_owner = current->files, | |
2310 | .l_pid = current->tgid, | |
2311 | }; | |
4fc8796d | 2312 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2313 | &lockowner); |
08e9eac4 | 2314 | } else |
f597c537 | 2315 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2316 | |
7c513058 | 2317 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2318 | if (status == 0 && state != NULL) |
2319 | renew_lease(server, timestamp); | |
65e4308d | 2320 | return status; |
1da177e4 LT |
2321 | } |
2322 | ||
659bfcd6 TM |
2323 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2324 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2325 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2326 | struct nfs4_label *olabel) | |
1da177e4 | 2327 | { |
3e4f6290 | 2328 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2329 | struct nfs4_exception exception = { |
2330 | .state = state, | |
3114ea7a | 2331 | .inode = inode, |
a1d0b5ee | 2332 | }; |
1da177e4 LT |
2333 | int err; |
2334 | do { | |
1775fd3e | 2335 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2336 | trace_nfs4_setattr(inode, err); |
451146be TM |
2337 | switch (err) { |
2338 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2339 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2340 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2341 | "applying open mode checks to " | |
2342 | "a SETATTR that is not " | |
2343 | "changing file size.\n", | |
2344 | server->nfs_client->cl_hostname); | |
2345 | } | |
451146be TM |
2346 | if (state && !(state->state & FMODE_WRITE)) { |
2347 | err = -EBADF; | |
2348 | if (sattr->ia_valid & ATTR_OPEN) | |
2349 | err = -EACCES; | |
2350 | goto out; | |
2351 | } | |
2352 | } | |
2353 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2354 | } while (exception.retry); |
451146be | 2355 | out: |
1da177e4 LT |
2356 | return err; |
2357 | } | |
2358 | ||
2359 | struct nfs4_closedata { | |
2360 | struct inode *inode; | |
2361 | struct nfs4_state *state; | |
2362 | struct nfs_closeargs arg; | |
2363 | struct nfs_closeres res; | |
516a6af6 | 2364 | struct nfs_fattr fattr; |
26e976a8 | 2365 | unsigned long timestamp; |
f7e8917a FI |
2366 | bool roc; |
2367 | u32 roc_barrier; | |
1da177e4 LT |
2368 | }; |
2369 | ||
963d8fe5 | 2370 | static void nfs4_free_closedata(void *data) |
9512135d | 2371 | { |
963d8fe5 TM |
2372 | struct nfs4_closedata *calldata = data; |
2373 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2374 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2375 | |
f7e8917a FI |
2376 | if (calldata->roc) |
2377 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2378 | nfs4_put_open_state(calldata->state); |
2379 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2380 | nfs4_put_state_owner(sp); |
322b2b90 | 2381 | nfs_sb_deactive(sb); |
9512135d TM |
2382 | kfree(calldata); |
2383 | } | |
2384 | ||
88069f77 TM |
2385 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2386 | fmode_t fmode) | |
2387 | { | |
2388 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2389 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2390 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2391 | case FMODE_WRITE: | |
88069f77 | 2392 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2393 | break; |
2394 | case FMODE_READ: | |
88069f77 | 2395 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2396 | break; |
2397 | case 0: | |
2398 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2399 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2400 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2401 | } | |
88069f77 TM |
2402 | spin_unlock(&state->owner->so_lock); |
2403 | } | |
2404 | ||
963d8fe5 | 2405 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2406 | { |
963d8fe5 | 2407 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2408 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2409 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2410 | ||
a3ca5651 | 2411 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2412 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2413 | return; | |
42113a75 | 2414 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2415 | /* hmm. we are done with the inode, and in the process of freeing |
2416 | * the state_owner. we keep this around to process errors | |
2417 | */ | |
1da177e4 LT |
2418 | switch (task->tk_status) { |
2419 | case 0: | |
f7e8917a FI |
2420 | if (calldata->roc) |
2421 | pnfs_roc_set_barrier(state->inode, | |
2422 | calldata->roc_barrier); | |
45328c35 | 2423 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2424 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2425 | nfs4_close_clear_stateid_flags(state, |
2426 | calldata->arg.fmode); | |
1da177e4 LT |
2427 | break; |
2428 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2429 | case -NFS4ERR_OLD_STATEID: |
2430 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2431 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2432 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2433 | break; |
1da177e4 | 2434 | default: |
72211dbe TM |
2435 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2436 | rpc_restart_call_prepare(task); | |
1da177e4 | 2437 | } |
72211dbe | 2438 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2439 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2440 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2441 | } |
2442 | ||
4ce70ada | 2443 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2444 | { |
4ce70ada | 2445 | struct nfs4_closedata *calldata = data; |
9512135d | 2446 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2447 | struct inode *inode = calldata->inode; |
88069f77 | 2448 | int call_close = 0; |
9512135d | 2449 | |
a3ca5651 | 2450 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2451 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2452 | goto out_wait; |
003707c7 | 2453 | |
88069f77 TM |
2454 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2455 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2456 | spin_lock(&state->owner->so_lock); |
003707c7 | 2457 | /* Calculate the change in open mode */ |
e7616923 | 2458 | if (state->n_rdwr == 0) { |
003707c7 | 2459 | if (state->n_rdonly == 0) { |
88069f77 TM |
2460 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2461 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2462 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2463 | } |
2464 | if (state->n_wronly == 0) { | |
88069f77 TM |
2465 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2466 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2467 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2468 | } |
e7616923 | 2469 | } |
5d422301 TM |
2470 | if (!nfs4_valid_open_stateid(state)) |
2471 | call_close = 0; | |
4cecb76f | 2472 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2473 | |
2474 | if (!call_close) { | |
963d8fe5 | 2475 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2476 | goto out_no_action; |
9512135d | 2477 | } |
88069f77 | 2478 | |
f7e8917a | 2479 | if (calldata->arg.fmode == 0) { |
88069f77 | 2480 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2481 | if (calldata->roc && |
b9536ad5 AA |
2482 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2483 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2484 | goto out_wait; |
b9536ad5 | 2485 | } |
f7e8917a | 2486 | } |
88069f77 | 2487 | |
516a6af6 | 2488 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2489 | calldata->timestamp = jiffies; |
7fdab069 | 2490 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2491 | &calldata->arg.seq_args, |
2492 | &calldata->res.seq_res, | |
2240a9e2 TM |
2493 | task) != 0) |
2494 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2495 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2496 | return; |
2497 | out_no_action: | |
2498 | task->tk_action = NULL; | |
2499 | out_wait: | |
2500 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2501 | } |
2502 | ||
963d8fe5 | 2503 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2504 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2505 | .rpc_call_done = nfs4_close_done, |
2506 | .rpc_release = nfs4_free_closedata, | |
2507 | }; | |
2508 | ||
1da177e4 LT |
2509 | /* |
2510 | * It is possible for data to be read/written from a mem-mapped file | |
2511 | * after the sys_close call (which hits the vfs layer as a flush). | |
2512 | * This means that we can't safely call nfsv4 close on a file until | |
2513 | * the inode is cleared. This in turn means that we are not good | |
2514 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2515 | * share state even when we are done with one of the three share | |
2516 | * stateid's in the inode. | |
2517 | * | |
2518 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2519 | */ | |
1f7977c1 | 2520 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2521 | { |
4a35bd41 | 2522 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2523 | struct nfs4_closedata *calldata; |
b39e625b TM |
2524 | struct nfs4_state_owner *sp = state->owner; |
2525 | struct rpc_task *task; | |
5138fde0 TM |
2526 | struct rpc_message msg = { |
2527 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2528 | .rpc_cred = state->owner->so_cred, | |
2529 | }; | |
c970aa85 TM |
2530 | struct rpc_task_setup task_setup_data = { |
2531 | .rpc_client = server->client, | |
5138fde0 | 2532 | .rpc_message = &msg, |
c970aa85 | 2533 | .callback_ops = &nfs4_close_ops, |
101070ca | 2534 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2535 | .flags = RPC_TASK_ASYNC, |
2536 | }; | |
9512135d | 2537 | int status = -ENOMEM; |
1da177e4 | 2538 | |
8535b2be | 2539 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2540 | if (calldata == NULL) |
9512135d | 2541 | goto out; |
9d12b216 | 2542 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2543 | calldata->inode = state->inode; |
1da177e4 | 2544 | calldata->state = state; |
4a35bd41 | 2545 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2546 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2547 | /* Serialization for the sequence id */ |
8535b2be | 2548 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2549 | if (calldata->arg.seqid == NULL) |
2550 | goto out_free_calldata; | |
dc0b027d | 2551 | calldata->arg.fmode = 0; |
a65318bf | 2552 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2553 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2554 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2555 | calldata->res.server = server; |
1f7977c1 | 2556 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2557 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2558 | |
1174dd1f TM |
2559 | msg.rpc_argp = &calldata->arg; |
2560 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2561 | task_setup_data.callback_data = calldata; |
2562 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2563 | if (IS_ERR(task)) |
2564 | return PTR_ERR(task); | |
a49c3c77 TM |
2565 | status = 0; |
2566 | if (wait) | |
2567 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2568 | rpc_put_task(task); |
a49c3c77 | 2569 | return status; |
9512135d TM |
2570 | out_free_calldata: |
2571 | kfree(calldata); | |
2572 | out: | |
b39e625b TM |
2573 | nfs4_put_open_state(state); |
2574 | nfs4_put_state_owner(sp); | |
9512135d | 2575 | return status; |
1da177e4 LT |
2576 | } |
2577 | ||
2b484297 | 2578 | static struct inode * |
cd9a1c0e | 2579 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2580 | { |
1da177e4 | 2581 | struct nfs4_state *state; |
aa9c2669 DQ |
2582 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2583 | ||
2584 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2585 | |
565277f6 | 2586 | /* Protect against concurrent sillydeletes */ |
959d921f | 2587 | state = nfs4_do_open(dir, ctx, open_flags, attr, label); |
aa9c2669 DQ |
2588 | |
2589 | nfs4_label_release_security(label); | |
2590 | ||
f46e0bd3 TM |
2591 | if (IS_ERR(state)) |
2592 | return ERR_CAST(state); | |
275bb307 | 2593 | return state->inode; |
1da177e4 LT |
2594 | } |
2595 | ||
1185a552 | 2596 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2597 | { |
2598 | if (ctx->state == NULL) | |
2599 | return; | |
2600 | if (is_sync) | |
643168c2 | 2601 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2602 | else |
643168c2 | 2603 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2604 | } |
1da177e4 LT |
2605 | |
2606 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2607 | { | |
43652ad5 BH |
2608 | struct nfs4_server_caps_arg args = { |
2609 | .fhandle = fhandle, | |
2610 | }; | |
1da177e4 LT |
2611 | struct nfs4_server_caps_res res = {}; |
2612 | struct rpc_message msg = { | |
2613 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2614 | .rpc_argp = &args, |
1da177e4 LT |
2615 | .rpc_resp = &res, |
2616 | }; | |
2617 | int status; | |
2618 | ||
7c513058 | 2619 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2620 | if (status == 0) { |
2621 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2622 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2623 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2624 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2625 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2626 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2627 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2628 | server->caps |= NFS_CAP_ACLS; | |
2629 | if (res.has_links != 0) | |
2630 | server->caps |= NFS_CAP_HARDLINKS; | |
2631 | if (res.has_symlinks != 0) | |
2632 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2633 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2634 | server->caps |= NFS_CAP_FILEID; | |
2635 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2636 | server->caps |= NFS_CAP_MODE; | |
2637 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2638 | server->caps |= NFS_CAP_NLINK; | |
2639 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2640 | server->caps |= NFS_CAP_OWNER; | |
2641 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2642 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2643 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2644 | server->caps |= NFS_CAP_ATIME; | |
2645 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2646 | server->caps |= NFS_CAP_CTIME; | |
2647 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2648 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2649 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2650 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2651 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2652 | #endif | |
2653 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2654 | sizeof(server->attr_bitmask)); | |
62ab460c | 2655 | |
aa9c2669 DQ |
2656 | if (server->caps & NFS_CAP_SECURITY_LABEL) { |
2657 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2658 | res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2659 | } | |
a65318bf TM |
2660 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2661 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2662 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2663 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2664 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2665 | } |
cccef3b9 | 2666 | |
1da177e4 LT |
2667 | return status; |
2668 | } | |
2669 | ||
55a97593 | 2670 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2671 | { |
2672 | struct nfs4_exception exception = { }; | |
2673 | int err; | |
2674 | do { | |
2675 | err = nfs4_handle_exception(server, | |
2676 | _nfs4_server_capabilities(server, fhandle), | |
2677 | &exception); | |
2678 | } while (exception.retry); | |
2679 | return err; | |
2680 | } | |
2681 | ||
2682 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2683 | struct nfs_fsinfo *info) | |
2684 | { | |
aa9c2669 | 2685 | u32 bitmask[3]; |
1da177e4 | 2686 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2687 | .bitmask = bitmask, |
1da177e4 LT |
2688 | }; |
2689 | struct nfs4_lookup_res res = { | |
2690 | .server = server, | |
0e574af1 | 2691 | .fattr = info->fattr, |
1da177e4 LT |
2692 | .fh = fhandle, |
2693 | }; | |
2694 | struct rpc_message msg = { | |
2695 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2696 | .rpc_argp = &args, | |
2697 | .rpc_resp = &res, | |
2698 | }; | |
008f55d0 | 2699 | |
aa9c2669 DQ |
2700 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2701 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2702 | /* | |
2703 | * Process the label in the upcoming getfattr | |
2704 | */ | |
2705 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2706 | ||
0e574af1 | 2707 | nfs_fattr_init(info->fattr); |
7c513058 | 2708 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2709 | } |
2710 | ||
2711 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2712 | struct nfs_fsinfo *info) | |
2713 | { | |
2714 | struct nfs4_exception exception = { }; | |
2715 | int err; | |
2716 | do { | |
fb8a5ba8 | 2717 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2718 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2719 | switch (err) { |
2720 | case 0: | |
2721 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2722 | goto out; |
fb8a5ba8 BS |
2723 | default: |
2724 | err = nfs4_handle_exception(server, err, &exception); | |
2725 | } | |
1da177e4 | 2726 | } while (exception.retry); |
05e9cfb4 | 2727 | out: |
1da177e4 LT |
2728 | return err; |
2729 | } | |
2730 | ||
8f70e95f BS |
2731 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2732 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2733 | { | |
c2190661 TM |
2734 | struct rpc_auth_create_args auth_args = { |
2735 | .pseudoflavor = flavor, | |
2736 | }; | |
8f70e95f BS |
2737 | struct rpc_auth *auth; |
2738 | int ret; | |
2739 | ||
c2190661 | 2740 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2741 | if (IS_ERR(auth)) { |
75bc8821 | 2742 | ret = -EACCES; |
8f70e95f BS |
2743 | goto out; |
2744 | } | |
2745 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2746 | out: |
2747 | return ret; | |
2748 | } | |
2749 | ||
9a744ba3 CL |
2750 | /* |
2751 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2752 | * | |
2753 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2754 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2755 | * | |
2756 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2757 | * negative errno value. | |
2758 | */ | |
801a16dc | 2759 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2760 | struct nfs_fsinfo *info) |
1da177e4 | 2761 | { |
9a744ba3 CL |
2762 | /* Per 3530bis 15.33.5 */ |
2763 | static const rpc_authflavor_t flav_array[] = { | |
2764 | RPC_AUTH_GSS_KRB5P, | |
2765 | RPC_AUTH_GSS_KRB5I, | |
2766 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2767 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2768 | RPC_AUTH_NULL, |
2769 | }; | |
2770 | int status = -EPERM; | |
2771 | size_t i; | |
6a1a1e34 | 2772 | |
9a744ba3 | 2773 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2774 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2775 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2776 | continue; |
2777 | break; | |
8f70e95f | 2778 | } |
9a744ba3 | 2779 | |
fb8a5ba8 BS |
2780 | /* |
2781 | * -EACCESS could mean that the user doesn't have correct permissions | |
2782 | * to access the mount. It could also mean that we tried to mount | |
2783 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2784 | * existing mount programs don't handle -EACCES very well so it should | |
2785 | * be mapped to -EPERM instead. | |
2786 | */ | |
2787 | if (status == -EACCES) | |
2788 | status = -EPERM; | |
801a16dc BS |
2789 | return status; |
2790 | } | |
2791 | ||
2ed4b95b CL |
2792 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2793 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2794 | { | |
2795 | int mv = server->nfs_client->cl_minorversion; | |
2796 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2797 | } | |
2798 | ||
2799 | /** | |
2800 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2801 | * @server: initialized nfs_server handle | |
2802 | * @fhandle: we fill in the pseudo-fs root file handle | |
2803 | * @info: we fill in an FSINFO struct | |
2804 | * | |
2805 | * Returns zero on success, or a negative errno. | |
801a16dc | 2806 | */ |
3028eb2b BS |
2807 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2808 | struct nfs_fsinfo *info) | |
801a16dc | 2809 | { |
2ed4b95b CL |
2810 | int status; |
2811 | ||
2812 | status = nfs4_lookup_root(server, fhandle, info); | |
2813 | if ((status == -NFS4ERR_WRONGSEC) && | |
2814 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2815 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2816 | ||
1da177e4 LT |
2817 | if (status == 0) |
2818 | status = nfs4_server_capabilities(server, fhandle); | |
2819 | if (status == 0) | |
2820 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2821 | |
c12e87f4 | 2822 | return nfs4_map_errors(status); |
1da177e4 LT |
2823 | } |
2824 | ||
bae36241 BS |
2825 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2826 | struct nfs_fsinfo *info) | |
2827 | { | |
2828 | int error; | |
2829 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2830 | struct nfs4_label *label = NULL; |
bae36241 BS |
2831 | |
2832 | error = nfs4_server_capabilities(server, mntfh); | |
2833 | if (error < 0) { | |
2834 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2835 | return error; | |
2836 | } | |
2837 | ||
14c43f76 DQ |
2838 | label = nfs4_label_alloc(server, GFP_KERNEL); |
2839 | if (IS_ERR(label)) | |
2840 | return PTR_ERR(label); | |
2841 | ||
1775fd3e | 2842 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2843 | if (error < 0) { |
2844 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 2845 | goto err_free_label; |
bae36241 BS |
2846 | } |
2847 | ||
2848 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2849 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2850 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2851 | ||
14c43f76 DQ |
2852 | err_free_label: |
2853 | nfs4_label_free(label); | |
2854 | ||
bae36241 BS |
2855 | return error; |
2856 | } | |
2857 | ||
6b97fd3d MN |
2858 | /* |
2859 | * Get locations and (maybe) other attributes of a referral. | |
2860 | * Note that we'll actually follow the referral later when | |
2861 | * we detect fsid mismatch in inode revalidation | |
2862 | */ | |
f05d147f BS |
2863 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2864 | const struct qstr *name, struct nfs_fattr *fattr, | |
2865 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2866 | { |
2867 | int status = -ENOMEM; | |
2868 | struct page *page = NULL; | |
2869 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2870 | |
2871 | page = alloc_page(GFP_KERNEL); | |
2872 | if (page == NULL) | |
2873 | goto out; | |
2874 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2875 | if (locations == NULL) | |
2876 | goto out; | |
2877 | ||
f05d147f | 2878 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2879 | if (status != 0) |
2880 | goto out; | |
2881 | /* Make sure server returned a different fsid for the referral */ | |
2882 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2883 | dprintk("%s: server did not return a different fsid for" |
2884 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2885 | status = -EIO; |
2886 | goto out; | |
2887 | } | |
533eb461 AA |
2888 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2889 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2890 | |
533eb461 | 2891 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2892 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2893 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2894 | out: | |
2895 | if (page) | |
2896 | __free_page(page); | |
5d7ca35a | 2897 | kfree(locations); |
6b97fd3d MN |
2898 | return status; |
2899 | } | |
2900 | ||
1775fd3e DQ |
2901 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2902 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2903 | { |
2904 | struct nfs4_getattr_arg args = { | |
2905 | .fh = fhandle, | |
2906 | .bitmask = server->attr_bitmask, | |
2907 | }; | |
2908 | struct nfs4_getattr_res res = { | |
2909 | .fattr = fattr, | |
1775fd3e | 2910 | .label = label, |
1da177e4 LT |
2911 | .server = server, |
2912 | }; | |
2913 | struct rpc_message msg = { | |
2914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2915 | .rpc_argp = &args, | |
2916 | .rpc_resp = &res, | |
2917 | }; | |
aa9c2669 DQ |
2918 | |
2919 | args.bitmask = nfs4_bitmask(server, label); | |
2920 | ||
0e574af1 | 2921 | nfs_fattr_init(fattr); |
7c513058 | 2922 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2923 | } |
2924 | ||
1775fd3e DQ |
2925 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2926 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2927 | { |
2928 | struct nfs4_exception exception = { }; | |
2929 | int err; | |
2930 | do { | |
b5f875a9 TM |
2931 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
2932 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
2933 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
2934 | &exception); |
2935 | } while (exception.retry); | |
2936 | return err; | |
2937 | } | |
2938 | ||
2939 | /* | |
2940 | * The file is not closed if it is opened due to the a request to change | |
2941 | * the size of the file. The open call will not be needed once the | |
2942 | * VFS layer lookup-intents are implemented. | |
2943 | * | |
2944 | * Close is called when the inode is destroyed. | |
2945 | * If we haven't opened the file for O_WRONLY, we | |
2946 | * need to in the size_change case to obtain a stateid. | |
2947 | * | |
2948 | * Got race? | |
2949 | * Because OPEN is always done by name in nfsv4, it is | |
2950 | * possible that we opened a different file by the same | |
2951 | * name. We can recognize this race condition, but we | |
2952 | * can't do anything about it besides returning an error. | |
2953 | * | |
2954 | * This will be fixed with VFS changes (lookup-intent). | |
2955 | */ | |
2956 | static int | |
2957 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2958 | struct iattr *sattr) | |
2959 | { | |
08e9eac4 | 2960 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2961 | struct rpc_cred *cred = NULL; |
d530838b | 2962 | struct nfs4_state *state = NULL; |
14c43f76 | 2963 | struct nfs4_label *label = NULL; |
1da177e4 LT |
2964 | int status; |
2965 | ||
8a1636c4 | 2966 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2967 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2968 | |
0e574af1 | 2969 | nfs_fattr_init(fattr); |
1da177e4 | 2970 | |
2669940d AA |
2971 | /* Deal with open(O_TRUNC) */ |
2972 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 2973 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
2974 | |
2975 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 2976 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
2977 | return 0; |
2978 | ||
d530838b | 2979 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2980 | if (sattr->ia_valid & ATTR_FILE) { |
2981 | struct nfs_open_context *ctx; | |
2982 | ||
2983 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2984 | if (ctx) { |
2985 | cred = ctx->cred; | |
2986 | state = ctx->state; | |
2987 | } | |
659bfcd6 | 2988 | } |
08e9eac4 | 2989 | |
14c43f76 DQ |
2990 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
2991 | if (IS_ERR(label)) | |
2992 | return PTR_ERR(label); | |
2993 | ||
2994 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 2995 | if (status == 0) { |
65e4308d | 2996 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
2997 | nfs_setsecurity(inode, fattr, label); |
2998 | } | |
14c43f76 | 2999 | nfs4_label_free(label); |
1da177e4 LT |
3000 | return status; |
3001 | } | |
3002 | ||
0c2e53f1 TM |
3003 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3004 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3005 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3006 | { |
0c2e53f1 | 3007 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3008 | int status; |
3009 | struct nfs4_lookup_arg args = { | |
3010 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3011 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3012 | .name = name, |
3013 | }; | |
3014 | struct nfs4_lookup_res res = { | |
3015 | .server = server, | |
3016 | .fattr = fattr, | |
aa9c2669 | 3017 | .label = label, |
2b3de441 DH |
3018 | .fh = fhandle, |
3019 | }; | |
3020 | struct rpc_message msg = { | |
3021 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3022 | .rpc_argp = &args, | |
3023 | .rpc_resp = &res, | |
3024 | }; | |
3025 | ||
aa9c2669 DQ |
3026 | args.bitmask = nfs4_bitmask(server, label); |
3027 | ||
2b3de441 DH |
3028 | nfs_fattr_init(fattr); |
3029 | ||
1da177e4 | 3030 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3031 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3032 | dprintk("NFS reply lookup: %d\n", status); |
3033 | return status; | |
3034 | } | |
3035 | ||
72de53ec | 3036 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3037 | { |
7ebb9315 | 3038 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3039 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3040 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3041 | fattr->nlink = 2; | |
3042 | } | |
3043 | ||
72de53ec BS |
3044 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3045 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3046 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3047 | { |
3048 | struct nfs4_exception exception = { }; | |
72de53ec | 3049 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3050 | int err; |
3051 | do { | |
1775fd3e | 3052 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3053 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3054 | switch (err) { |
08ef7bd3 | 3055 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3056 | err = -ENOENT; |
3057 | goto out; | |
0c2e53f1 | 3058 | case -NFS4ERR_MOVED: |
f05d147f | 3059 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3060 | goto out; |
0c2e53f1 | 3061 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3062 | err = -EPERM; |
3063 | if (client != *clnt) | |
3064 | goto out; | |
3065 | ||
3066 | client = nfs4_create_sec_client(client, dir, name); | |
3067 | if (IS_ERR(client)) | |
3068 | return PTR_ERR(client); | |
3069 | ||
3070 | exception.retry = 1; | |
3071 | break; | |
3072 | default: | |
3073 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3074 | } |
1da177e4 | 3075 | } while (exception.retry); |
72de53ec BS |
3076 | |
3077 | out: | |
3078 | if (err == 0) | |
3079 | *clnt = client; | |
3080 | else if (client != *clnt) | |
3081 | rpc_shutdown_client(client); | |
3082 | ||
1da177e4 LT |
3083 | return err; |
3084 | } | |
3085 | ||
80a16b21 | 3086 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3087 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3088 | struct nfs4_label *label) | |
72de53ec BS |
3089 | { |
3090 | int status; | |
3091 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3092 | ||
1775fd3e | 3093 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3094 | if (client != NFS_CLIENT(dir)) { |
3095 | rpc_shutdown_client(client); | |
3096 | nfs_fixup_secinfo_attributes(fattr); | |
3097 | } | |
3098 | return status; | |
3099 | } | |
3100 | ||
f05d147f BS |
3101 | struct rpc_clnt * |
3102 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3103 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3104 | { | |
3105 | int status; | |
3106 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
3107 | ||
1775fd3e | 3108 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
f05d147f BS |
3109 | if (status < 0) { |
3110 | rpc_shutdown_client(client); | |
3111 | return ERR_PTR(status); | |
3112 | } | |
3113 | return client; | |
3114 | } | |
3115 | ||
1da177e4 LT |
3116 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3117 | { | |
76b32999 | 3118 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3119 | struct nfs4_accessargs args = { |
3120 | .fh = NFS_FH(inode), | |
a4980e78 | 3121 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3122 | }; |
3123 | struct nfs4_accessres res = { | |
3124 | .server = server, | |
1da177e4 | 3125 | }; |
1da177e4 LT |
3126 | struct rpc_message msg = { |
3127 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3128 | .rpc_argp = &args, | |
3129 | .rpc_resp = &res, | |
3130 | .rpc_cred = entry->cred, | |
3131 | }; | |
3132 | int mode = entry->mask; | |
aa9c2669 | 3133 | int status = 0; |
1da177e4 LT |
3134 | |
3135 | /* | |
3136 | * Determine which access bits we want to ask for... | |
3137 | */ | |
3138 | if (mode & MAY_READ) | |
3139 | args.access |= NFS4_ACCESS_READ; | |
3140 | if (S_ISDIR(inode->i_mode)) { | |
3141 | if (mode & MAY_WRITE) | |
3142 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3143 | if (mode & MAY_EXEC) | |
3144 | args.access |= NFS4_ACCESS_LOOKUP; | |
3145 | } else { | |
3146 | if (mode & MAY_WRITE) | |
3147 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3148 | if (mode & MAY_EXEC) | |
3149 | args.access |= NFS4_ACCESS_EXECUTE; | |
3150 | } | |
c407d41a TM |
3151 | |
3152 | res.fattr = nfs_alloc_fattr(); | |
3153 | if (res.fattr == NULL) | |
3154 | return -ENOMEM; | |
3155 | ||
7c513058 | 3156 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3157 | if (!status) { |
6168f62c | 3158 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3159 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3160 | } |
c407d41a | 3161 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3162 | return status; |
3163 | } | |
3164 | ||
3165 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3166 | { | |
3167 | struct nfs4_exception exception = { }; | |
3168 | int err; | |
3169 | do { | |
c1578b76 TM |
3170 | err = _nfs4_proc_access(inode, entry); |
3171 | trace_nfs4_access(inode, err); | |
3172 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3173 | &exception); |
3174 | } while (exception.retry); | |
3175 | return err; | |
3176 | } | |
3177 | ||
3178 | /* | |
3179 | * TODO: For the time being, we don't try to get any attributes | |
3180 | * along with any of the zero-copy operations READ, READDIR, | |
3181 | * READLINK, WRITE. | |
3182 | * | |
3183 | * In the case of the first three, we want to put the GETATTR | |
3184 | * after the read-type operation -- this is because it is hard | |
3185 | * to predict the length of a GETATTR response in v4, and thus | |
3186 | * align the READ data correctly. This means that the GETATTR | |
3187 | * may end up partially falling into the page cache, and we should | |
3188 | * shift it into the 'tail' of the xdr_buf before processing. | |
3189 | * To do this efficiently, we need to know the total length | |
3190 | * of data received, which doesn't seem to be available outside | |
3191 | * of the RPC layer. | |
3192 | * | |
3193 | * In the case of WRITE, we also want to put the GETATTR after | |
3194 | * the operation -- in this case because we want to make sure | |
140150db | 3195 | * we get the post-operation mtime and size. |
1da177e4 LT |
3196 | * |
3197 | * Both of these changes to the XDR layer would in fact be quite | |
3198 | * minor, but I decided to leave them for a subsequent patch. | |
3199 | */ | |
3200 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3201 | unsigned int pgbase, unsigned int pglen) | |
3202 | { | |
3203 | struct nfs4_readlink args = { | |
3204 | .fh = NFS_FH(inode), | |
3205 | .pgbase = pgbase, | |
3206 | .pglen = pglen, | |
3207 | .pages = &page, | |
3208 | }; | |
f50c7000 | 3209 | struct nfs4_readlink_res res; |
1da177e4 LT |
3210 | struct rpc_message msg = { |
3211 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3212 | .rpc_argp = &args, | |
f50c7000 | 3213 | .rpc_resp = &res, |
1da177e4 LT |
3214 | }; |
3215 | ||
7c513058 | 3216 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3217 | } |
3218 | ||
3219 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3220 | unsigned int pgbase, unsigned int pglen) | |
3221 | { | |
3222 | struct nfs4_exception exception = { }; | |
3223 | int err; | |
3224 | do { | |
c1578b76 TM |
3225 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3226 | trace_nfs4_readlink(inode, err); | |
3227 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3228 | &exception); |
3229 | } while (exception.retry); | |
3230 | return err; | |
3231 | } | |
3232 | ||
1da177e4 | 3233 | /* |
8867fe58 | 3234 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3235 | */ |
1da177e4 LT |
3236 | static int |
3237 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3238 | int flags) |
1da177e4 | 3239 | { |
aa9c2669 | 3240 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3241 | struct nfs_open_context *ctx; |
1da177e4 | 3242 | struct nfs4_state *state; |
1da177e4 LT |
3243 | int status = 0; |
3244 | ||
8867fe58 MS |
3245 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3246 | if (IS_ERR(ctx)) | |
3247 | return PTR_ERR(ctx); | |
3248 | ||
aa9c2669 DQ |
3249 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3250 | ||
a8a5da99 | 3251 | sattr->ia_mode &= ~current_umask(); |
959d921f | 3252 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel); |
1da177e4 LT |
3253 | if (IS_ERR(state)) { |
3254 | status = PTR_ERR(state); | |
c0204fd2 | 3255 | goto out; |
1da177e4 | 3256 | } |
1da177e4 | 3257 | out: |
aa9c2669 | 3258 | nfs4_label_release_security(ilabel); |
8867fe58 | 3259 | put_nfs_open_context(ctx); |
1da177e4 LT |
3260 | return status; |
3261 | } | |
3262 | ||
3263 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3264 | { | |
16e42959 | 3265 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3266 | struct nfs_removeargs args = { |
1da177e4 | 3267 | .fh = NFS_FH(dir), |
26fe5750 | 3268 | .name = *name, |
16e42959 | 3269 | }; |
4fdc17b2 | 3270 | struct nfs_removeres res = { |
16e42959 | 3271 | .server = server, |
1da177e4 | 3272 | }; |
1da177e4 | 3273 | struct rpc_message msg = { |
4fdc17b2 TM |
3274 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3275 | .rpc_argp = &args, | |
3276 | .rpc_resp = &res, | |
1da177e4 | 3277 | }; |
778d2817 | 3278 | int status; |
1da177e4 | 3279 | |
7c513058 | 3280 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3281 | if (status == 0) |
16e42959 | 3282 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3283 | return status; |
3284 | } | |
3285 | ||
3286 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3287 | { | |
3288 | struct nfs4_exception exception = { }; | |
3289 | int err; | |
3290 | do { | |
078ea3df TM |
3291 | err = _nfs4_proc_remove(dir, name); |
3292 | trace_nfs4_remove(dir, name, err); | |
3293 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3294 | &exception); |
3295 | } while (exception.retry); | |
3296 | return err; | |
3297 | } | |
3298 | ||
e4eff1a6 | 3299 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3300 | { |
e4eff1a6 TM |
3301 | struct nfs_server *server = NFS_SERVER(dir); |
3302 | struct nfs_removeargs *args = msg->rpc_argp; | |
3303 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3304 | |
e4eff1a6 | 3305 | res->server = server; |
1da177e4 | 3306 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3307 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3308 | |
3309 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3310 | } |
3311 | ||
34e137cc BS |
3312 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3313 | { | |
d9afbd1b TM |
3314 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3315 | &data->args.seq_args, | |
3316 | &data->res.seq_res, | |
3317 | task); | |
1da177e4 LT |
3318 | } |
3319 | ||
e4eff1a6 | 3320 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3321 | { |
078ea3df TM |
3322 | struct nfs_unlinkdata *data = task->tk_calldata; |
3323 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3324 | |
14516c3a TM |
3325 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3326 | return 0; | |
9e33bed5 | 3327 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3328 | return 0; |
3329 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3330 | return 1; |
1da177e4 LT |
3331 | } |
3332 | ||
d3d4152a JL |
3333 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3334 | { | |
3335 | struct nfs_server *server = NFS_SERVER(dir); | |
3336 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3337 | struct nfs_renameres *res = msg->rpc_resp; | |
3338 | ||
3339 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3340 | res->server = server; |
9d12b216 | 3341 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3342 | } |
3343 | ||
c6bfa1a1 BS |
3344 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3345 | { | |
d9afbd1b TM |
3346 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3347 | &data->args.seq_args, | |
3348 | &data->res.seq_res, | |
3349 | task); | |
d3d4152a JL |
3350 | } |
3351 | ||
3352 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3353 | struct inode *new_dir) | |
3354 | { | |
fbc6f7c2 TM |
3355 | struct nfs_renamedata *data = task->tk_calldata; |
3356 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3357 | |
3358 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3359 | return 0; | |
3360 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3361 | return 0; | |
3362 | ||
3363 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3364 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3365 | return 1; |
3366 | } | |
3367 | ||
1da177e4 LT |
3368 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3369 | struct inode *new_dir, struct qstr *new_name) | |
3370 | { | |
6caf2c82 | 3371 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3372 | struct nfs_renameargs arg = { |
1da177e4 LT |
3373 | .old_dir = NFS_FH(old_dir), |
3374 | .new_dir = NFS_FH(new_dir), | |
3375 | .old_name = old_name, | |
3376 | .new_name = new_name, | |
6caf2c82 | 3377 | }; |
e8582a8b | 3378 | struct nfs_renameres res = { |
6caf2c82 | 3379 | .server = server, |
1da177e4 | 3380 | }; |
1da177e4 LT |
3381 | struct rpc_message msg = { |
3382 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3383 | .rpc_argp = &arg, | |
3384 | .rpc_resp = &res, | |
3385 | }; | |
011fff72 | 3386 | int status = -ENOMEM; |
14c43f76 | 3387 | |
7c513058 | 3388 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3389 | if (!status) { |
3390 | update_changeattr(old_dir, &res.old_cinfo); | |
3391 | update_changeattr(new_dir, &res.new_cinfo); | |
3392 | } | |
3393 | return status; | |
3394 | } | |
3395 | ||
3396 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3397 | struct inode *new_dir, struct qstr *new_name) | |
3398 | { | |
3399 | struct nfs4_exception exception = { }; | |
3400 | int err; | |
3401 | do { | |
fbc6f7c2 TM |
3402 | err = _nfs4_proc_rename(old_dir, old_name, |
3403 | new_dir, new_name); | |
3404 | trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err); | |
3405 | err = nfs4_handle_exception(NFS_SERVER(old_dir), err, | |
1da177e4 LT |
3406 | &exception); |
3407 | } while (exception.retry); | |
3408 | return err; | |
3409 | } | |
3410 | ||
3411 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3412 | { | |
91ba2eee | 3413 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3414 | struct nfs4_link_arg arg = { |
3415 | .fh = NFS_FH(inode), | |
3416 | .dir_fh = NFS_FH(dir), | |
3417 | .name = name, | |
91ba2eee TM |
3418 | .bitmask = server->attr_bitmask, |
3419 | }; | |
91ba2eee TM |
3420 | struct nfs4_link_res res = { |
3421 | .server = server, | |
1775fd3e | 3422 | .label = NULL, |
1da177e4 | 3423 | }; |
1da177e4 LT |
3424 | struct rpc_message msg = { |
3425 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3426 | .rpc_argp = &arg, | |
91ba2eee | 3427 | .rpc_resp = &res, |
1da177e4 | 3428 | }; |
136f2627 TM |
3429 | int status = -ENOMEM; |
3430 | ||
3431 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3432 | if (res.fattr == NULL) |
136f2627 | 3433 | goto out; |
1da177e4 | 3434 | |
14c43f76 DQ |
3435 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3436 | if (IS_ERR(res.label)) { | |
3437 | status = PTR_ERR(res.label); | |
3438 | goto out; | |
3439 | } | |
aa9c2669 | 3440 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3441 | |
7c513058 | 3442 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3443 | if (!status) { |
3444 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3445 | status = nfs_post_op_update_inode(inode, res.fattr); |
3446 | if (!status) | |
3447 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3448 | } |
14c43f76 DQ |
3449 | |
3450 | ||
3451 | nfs4_label_free(res.label); | |
3452 | ||
136f2627 | 3453 | out: |
136f2627 | 3454 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3455 | return status; |
3456 | } | |
3457 | ||
3458 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3459 | { | |
3460 | struct nfs4_exception exception = { }; | |
3461 | int err; | |
3462 | do { | |
3463 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3464 | _nfs4_proc_link(inode, dir, name), | |
3465 | &exception); | |
3466 | } while (exception.retry); | |
3467 | return err; | |
3468 | } | |
3469 | ||
57dc9a57 TM |
3470 | struct nfs4_createdata { |
3471 | struct rpc_message msg; | |
3472 | struct nfs4_create_arg arg; | |
3473 | struct nfs4_create_res res; | |
3474 | struct nfs_fh fh; | |
3475 | struct nfs_fattr fattr; | |
1775fd3e | 3476 | struct nfs4_label *label; |
57dc9a57 TM |
3477 | }; |
3478 | ||
3479 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3480 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3481 | { | |
3482 | struct nfs4_createdata *data; | |
3483 | ||
3484 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3485 | if (data != NULL) { | |
3486 | struct nfs_server *server = NFS_SERVER(dir); | |
3487 | ||
14c43f76 DQ |
3488 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3489 | if (IS_ERR(data->label)) | |
3490 | goto out_free; | |
3491 | ||
57dc9a57 TM |
3492 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3493 | data->msg.rpc_argp = &data->arg; | |
3494 | data->msg.rpc_resp = &data->res; | |
3495 | data->arg.dir_fh = NFS_FH(dir); | |
3496 | data->arg.server = server; | |
3497 | data->arg.name = name; | |
3498 | data->arg.attrs = sattr; | |
3499 | data->arg.ftype = ftype; | |
aa9c2669 | 3500 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3501 | data->res.server = server; |
3502 | data->res.fh = &data->fh; | |
3503 | data->res.fattr = &data->fattr; | |
1775fd3e | 3504 | data->res.label = data->label; |
57dc9a57 | 3505 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3506 | } |
3507 | return data; | |
14c43f76 DQ |
3508 | out_free: |
3509 | kfree(data); | |
3510 | return NULL; | |
57dc9a57 TM |
3511 | } |
3512 | ||
3513 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3514 | { | |
7c513058 | 3515 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3516 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3517 | if (status == 0) { |
3518 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3519 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3520 | } |
3521 | return status; | |
3522 | } | |
3523 | ||
3524 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3525 | { | |
14c43f76 | 3526 | nfs4_label_free(data->label); |
57dc9a57 TM |
3527 | kfree(data); |
3528 | } | |
3529 | ||
4f390c15 | 3530 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3531 | struct page *page, unsigned int len, struct iattr *sattr, |
3532 | struct nfs4_label *label) | |
1da177e4 | 3533 | { |
57dc9a57 TM |
3534 | struct nfs4_createdata *data; |
3535 | int status = -ENAMETOOLONG; | |
1da177e4 | 3536 | |
94a6d753 | 3537 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3538 | goto out; |
4f390c15 | 3539 | |
57dc9a57 TM |
3540 | status = -ENOMEM; |
3541 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3542 | if (data == NULL) | |
3543 | goto out; | |
3544 | ||
3545 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3546 | data->arg.u.symlink.pages = &page; | |
3547 | data->arg.u.symlink.len = len; | |
1775fd3e | 3548 | data->arg.label = label; |
1da177e4 | 3549 | |
57dc9a57 TM |
3550 | status = nfs4_do_create(dir, dentry, data); |
3551 | ||
3552 | nfs4_free_createdata(data); | |
3553 | out: | |
1da177e4 LT |
3554 | return status; |
3555 | } | |
3556 | ||
4f390c15 | 3557 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3558 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3559 | { |
3560 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3561 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3562 | int err; |
aa9c2669 DQ |
3563 | |
3564 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3565 | ||
1da177e4 | 3566 | do { |
078ea3df TM |
3567 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3568 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3569 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3570 | &exception); |
3571 | } while (exception.retry); | |
aa9c2669 DQ |
3572 | |
3573 | nfs4_label_release_security(label); | |
1da177e4 LT |
3574 | return err; |
3575 | } | |
3576 | ||
3577 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3578 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3579 | { |
57dc9a57 TM |
3580 | struct nfs4_createdata *data; |
3581 | int status = -ENOMEM; | |
1da177e4 | 3582 | |
57dc9a57 TM |
3583 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3584 | if (data == NULL) | |
3585 | goto out; | |
3586 | ||
1775fd3e | 3587 | data->arg.label = label; |
57dc9a57 TM |
3588 | status = nfs4_do_create(dir, dentry, data); |
3589 | ||
3590 | nfs4_free_createdata(data); | |
3591 | out: | |
1da177e4 LT |
3592 | return status; |
3593 | } | |
3594 | ||
3595 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3596 | struct iattr *sattr) | |
3597 | { | |
3598 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3599 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3600 | int err; |
a8a5da99 | 3601 | |
aa9c2669 DQ |
3602 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3603 | ||
a8a5da99 | 3604 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3605 | do { |
078ea3df TM |
3606 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3607 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3608 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3609 | &exception); |
3610 | } while (exception.retry); | |
aa9c2669 DQ |
3611 | nfs4_label_release_security(label); |
3612 | ||
1da177e4 LT |
3613 | return err; |
3614 | } | |
3615 | ||
3616 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3617 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3618 | { |
3619 | struct inode *dir = dentry->d_inode; | |
3620 | struct nfs4_readdir_arg args = { | |
3621 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3622 | .pages = pages, |
1da177e4 LT |
3623 | .pgbase = 0, |
3624 | .count = count, | |
96d25e53 | 3625 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3626 | .plus = plus, |
1da177e4 LT |
3627 | }; |
3628 | struct nfs4_readdir_res res; | |
3629 | struct rpc_message msg = { | |
3630 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3631 | .rpc_argp = &args, | |
3632 | .rpc_resp = &res, | |
3633 | .rpc_cred = cred, | |
3634 | }; | |
3635 | int status; | |
3636 | ||
3110ff80 | 3637 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3638 | dentry->d_parent->d_name.name, |
3639 | dentry->d_name.name, | |
3640 | (unsigned long long)cookie); | |
c3f52af3 | 3641 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3642 | res.pgbase = args.pgbase; |
7c513058 | 3643 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3644 | if (status >= 0) { |
c3f52af3 | 3645 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3646 | status += args.pgbase; |
3647 | } | |
c4812998 TM |
3648 | |
3649 | nfs_invalidate_atime(dir); | |
3650 | ||
3110ff80 | 3651 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3652 | return status; |
3653 | } | |
3654 | ||
3655 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3656 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3657 | { |
3658 | struct nfs4_exception exception = { }; | |
3659 | int err; | |
3660 | do { | |
c1578b76 TM |
3661 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3662 | pages, count, plus); | |
3663 | trace_nfs4_readdir(dentry->d_inode, err); | |
3664 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3665 | &exception); |
3666 | } while (exception.retry); | |
3667 | return err; | |
3668 | } | |
3669 | ||
3670 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3671 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3672 | { |
57dc9a57 TM |
3673 | struct nfs4_createdata *data; |
3674 | int mode = sattr->ia_mode; | |
3675 | int status = -ENOMEM; | |
1da177e4 | 3676 | |
57dc9a57 TM |
3677 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3678 | if (data == NULL) | |
3679 | goto out; | |
3680 | ||
1da177e4 | 3681 | if (S_ISFIFO(mode)) |
57dc9a57 | 3682 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3683 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3684 | data->arg.ftype = NF4BLK; |
3685 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3686 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3687 | } |
3688 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3689 | data->arg.ftype = NF4CHR; |
3690 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3691 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3692 | } else if (!S_ISSOCK(mode)) { |
3693 | status = -EINVAL; | |
3694 | goto out_free; | |
1da177e4 | 3695 | } |
1775fd3e | 3696 | |
aa9c2669 | 3697 | data->arg.label = label; |
57dc9a57 | 3698 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3699 | out_free: |
57dc9a57 TM |
3700 | nfs4_free_createdata(data); |
3701 | out: | |
1da177e4 LT |
3702 | return status; |
3703 | } | |
3704 | ||
3705 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3706 | struct iattr *sattr, dev_t rdev) | |
3707 | { | |
3708 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3709 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3710 | int err; |
a8a5da99 | 3711 | |
aa9c2669 DQ |
3712 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3713 | ||
a8a5da99 | 3714 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3715 | do { |
078ea3df TM |
3716 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3717 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3718 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3719 | &exception); |
3720 | } while (exception.retry); | |
aa9c2669 DQ |
3721 | |
3722 | nfs4_label_release_security(label); | |
3723 | ||
1da177e4 LT |
3724 | return err; |
3725 | } | |
3726 | ||
3727 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3728 | struct nfs_fsstat *fsstat) | |
3729 | { | |
3730 | struct nfs4_statfs_arg args = { | |
3731 | .fh = fhandle, | |
3732 | .bitmask = server->attr_bitmask, | |
3733 | }; | |
24ad148a BH |
3734 | struct nfs4_statfs_res res = { |
3735 | .fsstat = fsstat, | |
3736 | }; | |
1da177e4 LT |
3737 | struct rpc_message msg = { |
3738 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3739 | .rpc_argp = &args, | |
24ad148a | 3740 | .rpc_resp = &res, |
1da177e4 LT |
3741 | }; |
3742 | ||
0e574af1 | 3743 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3744 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3745 | } |
3746 | ||
3747 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3748 | { | |
3749 | struct nfs4_exception exception = { }; | |
3750 | int err; | |
3751 | do { | |
3752 | err = nfs4_handle_exception(server, | |
3753 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3754 | &exception); | |
3755 | } while (exception.retry); | |
3756 | return err; | |
3757 | } | |
3758 | ||
3759 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3760 | struct nfs_fsinfo *fsinfo) | |
3761 | { | |
3762 | struct nfs4_fsinfo_arg args = { | |
3763 | .fh = fhandle, | |
3764 | .bitmask = server->attr_bitmask, | |
3765 | }; | |
3dda5e43 BH |
3766 | struct nfs4_fsinfo_res res = { |
3767 | .fsinfo = fsinfo, | |
3768 | }; | |
1da177e4 LT |
3769 | struct rpc_message msg = { |
3770 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3771 | .rpc_argp = &args, | |
3dda5e43 | 3772 | .rpc_resp = &res, |
1da177e4 LT |
3773 | }; |
3774 | ||
7c513058 | 3775 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3776 | } |
3777 | ||
3778 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3779 | { | |
3780 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3781 | unsigned long now = jiffies; |
1da177e4 LT |
3782 | int err; |
3783 | ||
3784 | do { | |
83ca7f5a | 3785 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 3786 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
3787 | if (err == 0) { |
3788 | struct nfs_client *clp = server->nfs_client; | |
3789 | ||
3790 | spin_lock(&clp->cl_lock); | |
3791 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3792 | clp->cl_last_renewal = now; | |
3793 | spin_unlock(&clp->cl_lock); | |
3794 | break; | |
3795 | } | |
3796 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3797 | } while (exception.retry); |
3798 | return err; | |
3799 | } | |
3800 | ||
3801 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3802 | { | |
e38eb650 BS |
3803 | int error; |
3804 | ||
0e574af1 | 3805 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3806 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3807 | if (error == 0) { |
3808 | /* block layout checks this! */ | |
3809 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3810 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3811 | } |
e38eb650 BS |
3812 | |
3813 | return error; | |
1da177e4 LT |
3814 | } |
3815 | ||
3816 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3817 | struct nfs_pathconf *pathconf) | |
3818 | { | |
3819 | struct nfs4_pathconf_arg args = { | |
3820 | .fh = fhandle, | |
3821 | .bitmask = server->attr_bitmask, | |
3822 | }; | |
d45b2989 BH |
3823 | struct nfs4_pathconf_res res = { |
3824 | .pathconf = pathconf, | |
3825 | }; | |
1da177e4 LT |
3826 | struct rpc_message msg = { |
3827 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3828 | .rpc_argp = &args, | |
d45b2989 | 3829 | .rpc_resp = &res, |
1da177e4 LT |
3830 | }; |
3831 | ||
3832 | /* None of the pathconf attributes are mandatory to implement */ | |
3833 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3834 | memset(pathconf, 0, sizeof(*pathconf)); | |
3835 | return 0; | |
3836 | } | |
3837 | ||
0e574af1 | 3838 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3839 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3840 | } |
3841 | ||
3842 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3843 | struct nfs_pathconf *pathconf) | |
3844 | { | |
3845 | struct nfs4_exception exception = { }; | |
3846 | int err; | |
3847 | ||
3848 | do { | |
3849 | err = nfs4_handle_exception(server, | |
3850 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3851 | &exception); | |
3852 | } while (exception.retry); | |
3853 | return err; | |
3854 | } | |
3855 | ||
5521abfd | 3856 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3857 | const struct nfs_open_context *ctx, |
3858 | const struct nfs_lock_context *l_ctx, | |
3859 | fmode_t fmode) | |
3860 | { | |
3861 | const struct nfs_lockowner *lockowner = NULL; | |
3862 | ||
3863 | if (l_ctx != NULL) | |
3864 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3865 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3866 | } |
3867 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3868 | ||
5521abfd TM |
3869 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3870 | const struct nfs_open_context *ctx, | |
3871 | const struct nfs_lock_context *l_ctx, | |
3872 | fmode_t fmode) | |
3873 | { | |
3874 | nfs4_stateid current_stateid; | |
3875 | ||
3876 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3877 | return false; | |
3878 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3879 | } | |
3880 | ||
3881 | static bool nfs4_error_stateid_expired(int err) | |
3882 | { | |
3883 | switch (err) { | |
3884 | case -NFS4ERR_DELEG_REVOKED: | |
3885 | case -NFS4ERR_ADMIN_REVOKED: | |
3886 | case -NFS4ERR_BAD_STATEID: | |
3887 | case -NFS4ERR_STALE_STATEID: | |
3888 | case -NFS4ERR_OLD_STATEID: | |
3889 | case -NFS4ERR_OPENMODE: | |
3890 | case -NFS4ERR_EXPIRED: | |
3891 | return true; | |
3892 | } | |
3893 | return false; | |
3894 | } | |
3895 | ||
d20581aa BH |
3896 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3897 | { | |
cd841605 | 3898 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3899 | } |
3900 | ||
cbdabc7f | 3901 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3902 | { |
cd841605 | 3903 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3904 | |
cc668ab3 | 3905 | trace_nfs4_read(data, task->tk_status); |
9e33bed5 | 3906 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3907 | rpc_restart_call_prepare(task); |
ec06c096 | 3908 | return -EAGAIN; |
1da177e4 | 3909 | } |
8850df99 | 3910 | |
d20581aa | 3911 | __nfs4_read_done_cb(data); |
1da177e4 | 3912 | if (task->tk_status > 0) |
ec06c096 TM |
3913 | renew_lease(server, data->timestamp); |
3914 | return 0; | |
1da177e4 LT |
3915 | } |
3916 | ||
5521abfd TM |
3917 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3918 | struct nfs_readargs *args) | |
3919 | { | |
3920 | ||
3921 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3922 | nfs4_stateid_is_current(&args->stateid, | |
3923 | args->context, | |
3924 | args->lock_context, | |
3925 | FMODE_READ)) | |
3926 | return false; | |
3927 | rpc_restart_call_prepare(task); | |
3928 | return true; | |
3929 | } | |
3930 | ||
cbdabc7f AA |
3931 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3932 | { | |
3933 | ||
3934 | dprintk("--> %s\n", __func__); | |
3935 | ||
3936 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3937 | return -EAGAIN; | |
5521abfd TM |
3938 | if (nfs4_read_stateid_changed(task, &data->args)) |
3939 | return -EAGAIN; | |
d20581aa BH |
3940 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3941 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3942 | } |
3943 | ||
bdc7f021 | 3944 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3945 | { |
1da177e4 | 3946 | data->timestamp = jiffies; |
cbdabc7f | 3947 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3948 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3949 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3950 | } |
3951 | ||
ea7c3303 BS |
3952 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3953 | { | |
9b206149 | 3954 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3955 | &data->args.seq_args, |
3956 | &data->res.seq_res, | |
9b206149 TM |
3957 | task)) |
3958 | return; | |
3959 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3960 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3961 | } |
3962 | ||
b029bc9b | 3963 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3964 | { |
cd841605 | 3965 | struct inode *inode = data->header->inode; |
1da177e4 | 3966 | |
cc668ab3 | 3967 | trace_nfs4_write(data, task->tk_status); |
9e33bed5 | 3968 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3969 | rpc_restart_call_prepare(task); |
788e7a89 | 3970 | return -EAGAIN; |
1da177e4 | 3971 | } |
4f9838c7 | 3972 | if (task->tk_status >= 0) { |
1da177e4 | 3973 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3974 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3975 | } |
788e7a89 | 3976 | return 0; |
1da177e4 LT |
3977 | } |
3978 | ||
5521abfd TM |
3979 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3980 | struct nfs_writeargs *args) | |
3981 | { | |
3982 | ||
3983 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3984 | nfs4_stateid_is_current(&args->stateid, | |
3985 | args->context, | |
3986 | args->lock_context, | |
3987 | FMODE_WRITE)) | |
3988 | return false; | |
3989 | rpc_restart_call_prepare(task); | |
3990 | return true; | |
3991 | } | |
3992 | ||
b029bc9b FI |
3993 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3994 | { | |
3995 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3996 | return -EAGAIN; | |
5521abfd TM |
3997 | if (nfs4_write_stateid_changed(task, &data->args)) |
3998 | return -EAGAIN; | |
d20581aa BH |
3999 | return data->write_done_cb ? data->write_done_cb(task, data) : |
4000 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
4001 | } |
4002 | ||
5a37f851 TM |
4003 | static |
4004 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 4005 | { |
5a37f851 TM |
4006 | const struct nfs_pgio_header *hdr = data->header; |
4007 | ||
4008 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
4009 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
4010 | return false; | |
4011 | /* Otherwise, request attributes if and only if we don't hold | |
4012 | * a delegation | |
4013 | */ | |
011e2a7f | 4014 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4015 | } |
a69aef14 | 4016 | |
bdc7f021 | 4017 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 4018 | { |
cd841605 | 4019 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 4020 | |
5a37f851 | 4021 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
4022 | data->args.bitmask = NULL; |
4023 | data->res.fattr = NULL; | |
4024 | } else | |
4025 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 4026 | |
b029bc9b FI |
4027 | if (!data->write_done_cb) |
4028 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 4029 | data->res.server = server; |
1da177e4 LT |
4030 | data->timestamp = jiffies; |
4031 | ||
bdc7f021 | 4032 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 4033 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4034 | } |
4035 | ||
c6cb80d0 BS |
4036 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
4037 | { | |
9b206149 | 4038 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4039 | &data->args.seq_args, |
4040 | &data->res.seq_res, | |
9b206149 TM |
4041 | task)) |
4042 | return; | |
4043 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4044 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
4045 | } |
4046 | ||
0b7c0153 | 4047 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4048 | { |
d9afbd1b TM |
4049 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4050 | &data->args.seq_args, | |
4051 | &data->res.seq_res, | |
4052 | task); | |
1da177e4 LT |
4053 | } |
4054 | ||
0b7c0153 | 4055 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4056 | { |
1da177e4 | 4057 | struct inode *inode = data->inode; |
14516c3a | 4058 | |
cc668ab3 | 4059 | trace_nfs4_commit(data, task->tk_status); |
9e33bed5 | 4060 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4061 | rpc_restart_call_prepare(task); |
788e7a89 | 4062 | return -EAGAIN; |
1da177e4 | 4063 | } |
788e7a89 | 4064 | return 0; |
1da177e4 LT |
4065 | } |
4066 | ||
0b7c0153 | 4067 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4068 | { |
4069 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4070 | return -EAGAIN; | |
0b7c0153 | 4071 | return data->commit_done_cb(task, data); |
5f452431 FI |
4072 | } |
4073 | ||
0b7c0153 | 4074 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4075 | { |
788e7a89 | 4076 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4077 | |
0b7c0153 FI |
4078 | if (data->commit_done_cb == NULL) |
4079 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4080 | data->res.server = server; |
bdc7f021 | 4081 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 4082 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4083 | } |
4084 | ||
9bc4e3ca CL |
4085 | struct nfs4_renewdata { |
4086 | struct nfs_client *client; | |
4087 | unsigned long timestamp; | |
4088 | }; | |
4089 | ||
1da177e4 LT |
4090 | /* |
4091 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4092 | * standalone procedure for queueing an asynchronous RENEW. | |
4093 | */ | |
9bc4e3ca | 4094 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4095 | { |
9bc4e3ca CL |
4096 | struct nfs4_renewdata *data = calldata; |
4097 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4098 | |
0851de06 AB |
4099 | if (atomic_read(&clp->cl_count) > 1) |
4100 | nfs4_schedule_state_renewal(clp); | |
4101 | nfs_put_client(clp); | |
9bc4e3ca | 4102 | kfree(data); |
dc96aef9 AB |
4103 | } |
4104 | ||
9bc4e3ca | 4105 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4106 | { |
9bc4e3ca CL |
4107 | struct nfs4_renewdata *data = calldata; |
4108 | struct nfs_client *clp = data->client; | |
4109 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4110 | |
c6d01c6f | 4111 | trace_nfs4_renew_async(clp, task->tk_status); |
1da177e4 | 4112 | if (task->tk_status < 0) { |
95baa25c | 4113 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4114 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4115 | return; | |
4116 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4117 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4118 | return; |
4119 | } | |
4120 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4121 | } |
452e9352 | 4122 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4123 | } |
4124 | ||
963d8fe5 TM |
4125 | static const struct rpc_call_ops nfs4_renew_ops = { |
4126 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4127 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4128 | }; |
4129 | ||
2f60ea6b | 4130 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4131 | { |
4132 | struct rpc_message msg = { | |
4133 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4134 | .rpc_argp = clp, | |
b4454fe1 | 4135 | .rpc_cred = cred, |
1da177e4 | 4136 | }; |
9bc4e3ca | 4137 | struct nfs4_renewdata *data; |
1da177e4 | 4138 | |
2f60ea6b TM |
4139 | if (renew_flags == 0) |
4140 | return 0; | |
0851de06 AB |
4141 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4142 | return -EIO; | |
b569ad34 | 4143 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4144 | if (data == NULL) |
4145 | return -ENOMEM; | |
4146 | data->client = clp; | |
4147 | data->timestamp = jiffies; | |
bc7a05ca | 4148 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4149 | &nfs4_renew_ops, data); |
1da177e4 LT |
4150 | } |
4151 | ||
8534d4ec | 4152 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4153 | { |
4154 | struct rpc_message msg = { | |
4155 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4156 | .rpc_argp = clp, | |
b4454fe1 | 4157 | .rpc_cred = cred, |
1da177e4 LT |
4158 | }; |
4159 | unsigned long now = jiffies; | |
4160 | int status; | |
4161 | ||
bc7a05ca | 4162 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4163 | if (status < 0) |
4164 | return status; | |
452e9352 | 4165 | do_renew_lease(clp, now); |
1da177e4 LT |
4166 | return 0; |
4167 | } | |
4168 | ||
aa1870af BF |
4169 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4170 | { | |
4171 | return (server->caps & NFS_CAP_ACLS) | |
4172 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
4173 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
4174 | } | |
4175 | ||
21f498c2 TM |
4176 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4177 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4178 | * the stack. |
4179 | */ | |
21f498c2 | 4180 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4181 | |
e9e3d724 NH |
4182 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4183 | struct page **pages, unsigned int *pgbase) | |
4184 | { | |
4185 | struct page *newpage, **spages; | |
4186 | int rc = 0; | |
4187 | size_t len; | |
4188 | spages = pages; | |
4189 | ||
4190 | do { | |
21f498c2 | 4191 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4192 | newpage = alloc_page(GFP_KERNEL); |
4193 | ||
4194 | if (newpage == NULL) | |
4195 | goto unwind; | |
4196 | memcpy(page_address(newpage), buf, len); | |
4197 | buf += len; | |
4198 | buflen -= len; | |
4199 | *pages++ = newpage; | |
4200 | rc++; | |
4201 | } while (buflen != 0); | |
4202 | ||
4203 | return rc; | |
4204 | ||
4205 | unwind: | |
4206 | for(; rc > 0; rc--) | |
4207 | __free_page(spages[rc-1]); | |
4208 | return -ENOMEM; | |
4209 | } | |
4210 | ||
e50a1c2e BF |
4211 | struct nfs4_cached_acl { |
4212 | int cached; | |
4213 | size_t len; | |
3e9d4154 | 4214 | char data[0]; |
e50a1c2e BF |
4215 | }; |
4216 | ||
4217 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4218 | { | |
4219 | struct nfs_inode *nfsi = NFS_I(inode); | |
4220 | ||
4221 | spin_lock(&inode->i_lock); | |
4222 | kfree(nfsi->nfs4_acl); | |
4223 | nfsi->nfs4_acl = acl; | |
4224 | spin_unlock(&inode->i_lock); | |
4225 | } | |
4226 | ||
4227 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4228 | { | |
4229 | nfs4_set_cached_acl(inode, NULL); | |
4230 | } | |
4231 | ||
4232 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4233 | { | |
4234 | struct nfs_inode *nfsi = NFS_I(inode); | |
4235 | struct nfs4_cached_acl *acl; | |
4236 | int ret = -ENOENT; | |
4237 | ||
4238 | spin_lock(&inode->i_lock); | |
4239 | acl = nfsi->nfs4_acl; | |
4240 | if (acl == NULL) | |
4241 | goto out; | |
4242 | if (buf == NULL) /* user is just asking for length */ | |
4243 | goto out_len; | |
4244 | if (acl->cached == 0) | |
4245 | goto out; | |
4246 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4247 | if (acl->len > buflen) | |
4248 | goto out; | |
4249 | memcpy(buf, acl->data, acl->len); | |
4250 | out_len: | |
4251 | ret = acl->len; | |
4252 | out: | |
4253 | spin_unlock(&inode->i_lock); | |
4254 | return ret; | |
4255 | } | |
4256 | ||
5794d21e | 4257 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4258 | { |
4259 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4260 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4261 | |
1f1ea6c2 | 4262 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4263 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4264 | if (acl == NULL) |
4265 | goto out; | |
4266 | acl->cached = 1; | |
5794d21e | 4267 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4268 | } else { |
4269 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4270 | if (acl == NULL) | |
4271 | goto out; | |
4272 | acl->cached = 0; | |
4273 | } | |
4274 | acl->len = acl_len; | |
4275 | out: | |
4276 | nfs4_set_cached_acl(inode, acl); | |
4277 | } | |
4278 | ||
bf118a34 AA |
4279 | /* |
4280 | * The getxattr API returns the required buffer length when called with a | |
4281 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4282 | * the required buf. On a NULL buf, we send a page of data to the server | |
4283 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4284 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4285 | * the cache. If not so, we throw away the page, and cache the required | |
4286 | * length. The next getxattr call will then produce another round trip to | |
4287 | * the server, this time with the input buf of the required size. | |
4288 | */ | |
16b4289c | 4289 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4290 | { |
bf118a34 | 4291 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4292 | struct nfs_getaclargs args = { |
4293 | .fh = NFS_FH(inode), | |
4294 | .acl_pages = pages, | |
4295 | .acl_len = buflen, | |
4296 | }; | |
663c79b3 BH |
4297 | struct nfs_getaclres res = { |
4298 | .acl_len = buflen, | |
4299 | }; | |
aa1870af BF |
4300 | struct rpc_message msg = { |
4301 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4302 | .rpc_argp = &args, | |
663c79b3 | 4303 | .rpc_resp = &res, |
aa1870af | 4304 | }; |
21f498c2 TM |
4305 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4306 | int ret = -ENOMEM, i; | |
aa1870af | 4307 | |
bf118a34 AA |
4308 | /* As long as we're doing a round trip to the server anyway, |
4309 | * let's be prepared for a page of acl data. */ | |
4310 | if (npages == 0) | |
4311 | npages = 1; | |
21f498c2 TM |
4312 | if (npages > ARRAY_SIZE(pages)) |
4313 | return -ERANGE; | |
5a006899 | 4314 | |
bf118a34 AA |
4315 | for (i = 0; i < npages; i++) { |
4316 | pages[i] = alloc_page(GFP_KERNEL); | |
4317 | if (!pages[i]) | |
4318 | goto out_free; | |
e50a1c2e | 4319 | } |
5a006899 SP |
4320 | |
4321 | /* for decoding across pages */ | |
4322 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4323 | if (!res.acl_scratch) | |
4324 | goto out_free; | |
4325 | ||
bf118a34 AA |
4326 | args.acl_len = npages * PAGE_SIZE; |
4327 | args.acl_pgbase = 0; | |
5a006899 | 4328 | |
de040bec | 4329 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4330 | __func__, buf, buflen, npages, args.acl_len); |
4331 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4332 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4333 | if (ret) |
4334 | goto out_free; | |
bf118a34 | 4335 | |
1f1ea6c2 TM |
4336 | /* Handle the case where the passed-in buffer is too short */ |
4337 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4338 | /* Did the user only issue a request for the acl length? */ | |
4339 | if (buf == NULL) | |
4340 | goto out_ok; | |
e50a1c2e | 4341 | ret = -ERANGE; |
1f1ea6c2 | 4342 | goto out_free; |
e50a1c2e | 4343 | } |
1f1ea6c2 | 4344 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4345 | if (buf) { |
4346 | if (res.acl_len > buflen) { | |
4347 | ret = -ERANGE; | |
4348 | goto out_free; | |
4349 | } | |
1f1ea6c2 | 4350 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4351 | } |
1f1ea6c2 TM |
4352 | out_ok: |
4353 | ret = res.acl_len; | |
e50a1c2e | 4354 | out_free: |
bf118a34 AA |
4355 | for (i = 0; i < npages; i++) |
4356 | if (pages[i]) | |
4357 | __free_page(pages[i]); | |
331818f1 TM |
4358 | if (res.acl_scratch) |
4359 | __free_page(res.acl_scratch); | |
aa1870af BF |
4360 | return ret; |
4361 | } | |
4362 | ||
16b4289c TM |
4363 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4364 | { | |
4365 | struct nfs4_exception exception = { }; | |
4366 | ssize_t ret; | |
4367 | do { | |
4368 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4369 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4370 | if (ret >= 0) |
4371 | break; | |
4372 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4373 | } while (exception.retry); | |
4374 | return ret; | |
4375 | } | |
4376 | ||
e50a1c2e BF |
4377 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4378 | { | |
4379 | struct nfs_server *server = NFS_SERVER(inode); | |
4380 | int ret; | |
4381 | ||
4382 | if (!nfs4_server_supports_acls(server)) | |
4383 | return -EOPNOTSUPP; | |
4384 | ret = nfs_revalidate_inode(server, inode); | |
4385 | if (ret < 0) | |
4386 | return ret; | |
08a22b39 AK |
4387 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4388 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4389 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4390 | if (ret != -ENOENT) | |
bf118a34 AA |
4391 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4392 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4393 | return ret; |
4394 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4395 | } | |
4396 | ||
16b4289c | 4397 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4398 | { |
4399 | struct nfs_server *server = NFS_SERVER(inode); | |
4400 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4401 | struct nfs_setaclargs arg = { | |
4402 | .fh = NFS_FH(inode), | |
4403 | .acl_pages = pages, | |
4404 | .acl_len = buflen, | |
4405 | }; | |
73c403a9 | 4406 | struct nfs_setaclres res; |
4b580ee3 BF |
4407 | struct rpc_message msg = { |
4408 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4409 | .rpc_argp = &arg, | |
73c403a9 | 4410 | .rpc_resp = &res, |
4b580ee3 | 4411 | }; |
21f498c2 | 4412 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4413 | int ret, i; |
4b580ee3 BF |
4414 | |
4415 | if (!nfs4_server_supports_acls(server)) | |
4416 | return -EOPNOTSUPP; | |
21f498c2 TM |
4417 | if (npages > ARRAY_SIZE(pages)) |
4418 | return -ERANGE; | |
e9e3d724 NH |
4419 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4420 | if (i < 0) | |
4421 | return i; | |
57ec14c5 | 4422 | nfs4_inode_return_delegation(inode); |
7c513058 | 4423 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4424 | |
4425 | /* | |
4426 | * Free each page after tx, so the only ref left is | |
4427 | * held by the network stack | |
4428 | */ | |
4429 | for (; i > 0; i--) | |
4430 | put_page(pages[i-1]); | |
4431 | ||
08a22b39 AK |
4432 | /* |
4433 | * Acl update can result in inode attribute update. | |
4434 | * so mark the attribute cache invalid. | |
4435 | */ | |
4436 | spin_lock(&inode->i_lock); | |
4437 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4438 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4439 | nfs_access_zap_cache(inode); |
4440 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4441 | return ret; |
4442 | } | |
4443 | ||
16b4289c TM |
4444 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4445 | { | |
4446 | struct nfs4_exception exception = { }; | |
4447 | int err; | |
4448 | do { | |
c1578b76 TM |
4449 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4450 | trace_nfs4_set_acl(inode, err); | |
4451 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4452 | &exception); |
4453 | } while (exception.retry); | |
4454 | return err; | |
4455 | } | |
4456 | ||
aa9c2669 DQ |
4457 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4458 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4459 | size_t buflen) | |
4460 | { | |
4461 | struct nfs_server *server = NFS_SERVER(inode); | |
4462 | struct nfs_fattr fattr; | |
4463 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4464 | ||
4465 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4466 | struct nfs4_getattr_arg args = { | |
4467 | .fh = NFS_FH(inode), | |
4468 | .bitmask = bitmask, | |
4469 | }; | |
4470 | struct nfs4_getattr_res res = { | |
4471 | .fattr = &fattr, | |
4472 | .label = &label, | |
4473 | .server = server, | |
4474 | }; | |
4475 | struct rpc_message msg = { | |
4476 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4477 | .rpc_argp = &args, | |
4478 | .rpc_resp = &res, | |
4479 | }; | |
4480 | int ret; | |
4481 | ||
4482 | nfs_fattr_init(&fattr); | |
4483 | ||
4484 | ret = rpc_call_sync(server->client, &msg, 0); | |
4485 | if (ret) | |
4486 | return ret; | |
4487 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4488 | return -ENOENT; | |
4489 | if (buflen < label.len) | |
4490 | return -ERANGE; | |
4491 | return 0; | |
4492 | } | |
4493 | ||
4494 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4495 | size_t buflen) | |
4496 | { | |
4497 | struct nfs4_exception exception = { }; | |
4498 | int err; | |
4499 | ||
4500 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4501 | return -EOPNOTSUPP; | |
4502 | ||
4503 | do { | |
c1578b76 TM |
4504 | err = _nfs4_get_security_label(inode, buf, buflen); |
4505 | trace_nfs4_get_security_label(inode, err); | |
4506 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4507 | &exception); |
4508 | } while (exception.retry); | |
4509 | return err; | |
4510 | } | |
4511 | ||
4512 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4513 | struct nfs4_label *ilabel, | |
4514 | struct nfs_fattr *fattr, | |
4515 | struct nfs4_label *olabel) | |
4516 | { | |
4517 | ||
4518 | struct iattr sattr = {0}; | |
4519 | struct nfs_server *server = NFS_SERVER(inode); | |
4520 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4521 | struct nfs_setattrargs args = { | |
4522 | .fh = NFS_FH(inode), | |
4523 | .iap = &sattr, | |
4524 | .server = server, | |
4525 | .bitmask = bitmask, | |
4526 | .label = ilabel, | |
4527 | }; | |
4528 | struct nfs_setattrres res = { | |
4529 | .fattr = fattr, | |
4530 | .label = olabel, | |
4531 | .server = server, | |
4532 | }; | |
4533 | struct rpc_message msg = { | |
4534 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
4535 | .rpc_argp = &args, | |
4536 | .rpc_resp = &res, | |
4537 | }; | |
4538 | int status; | |
4539 | ||
4540 | nfs4_stateid_copy(&args.stateid, &zero_stateid); | |
4541 | ||
4542 | status = rpc_call_sync(server->client, &msg, 0); | |
4543 | if (status) | |
4544 | dprintk("%s failed: %d\n", __func__, status); | |
4545 | ||
4546 | return status; | |
4547 | } | |
4548 | ||
4549 | static int nfs4_do_set_security_label(struct inode *inode, | |
4550 | struct nfs4_label *ilabel, | |
4551 | struct nfs_fattr *fattr, | |
4552 | struct nfs4_label *olabel) | |
4553 | { | |
4554 | struct nfs4_exception exception = { }; | |
4555 | int err; | |
4556 | ||
4557 | do { | |
c1578b76 TM |
4558 | err = _nfs4_do_set_security_label(inode, ilabel, |
4559 | fattr, olabel); | |
4560 | trace_nfs4_set_security_label(inode, err); | |
4561 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4562 | &exception); |
4563 | } while (exception.retry); | |
4564 | return err; | |
4565 | } | |
4566 | ||
4567 | static int | |
4568 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4569 | { | |
4570 | struct nfs4_label ilabel, *olabel = NULL; | |
4571 | struct nfs_fattr fattr; | |
4572 | struct rpc_cred *cred; | |
4573 | struct inode *inode = dentry->d_inode; | |
4574 | int status; | |
4575 | ||
4576 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4577 | return -EOPNOTSUPP; | |
4578 | ||
4579 | nfs_fattr_init(&fattr); | |
4580 | ||
4581 | ilabel.pi = 0; | |
4582 | ilabel.lfs = 0; | |
4583 | ilabel.label = (char *)buf; | |
4584 | ilabel.len = buflen; | |
4585 | ||
4586 | cred = rpc_lookup_cred(); | |
4587 | if (IS_ERR(cred)) | |
4588 | return PTR_ERR(cred); | |
4589 | ||
4590 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4591 | if (IS_ERR(olabel)) { | |
4592 | status = -PTR_ERR(olabel); | |
4593 | goto out; | |
4594 | } | |
4595 | ||
4596 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4597 | if (status == 0) | |
4598 | nfs_setsecurity(inode, &fattr, olabel); | |
4599 | ||
4600 | nfs4_label_free(olabel); | |
4601 | out: | |
4602 | put_rpccred(cred); | |
4603 | return status; | |
4604 | } | |
4605 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4606 | ||
4607 | ||
1da177e4 | 4608 | static int |
aa5190d0 | 4609 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4610 | { |
aa5190d0 TM |
4611 | struct nfs_client *clp = server->nfs_client; |
4612 | ||
4613 | if (task->tk_status >= 0) | |
1da177e4 LT |
4614 | return 0; |
4615 | switch(task->tk_status) { | |
a1d0b5ee | 4616 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4617 | case -NFS4ERR_ADMIN_REVOKED: |
4618 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4619 | if (state == NULL) |
4620 | break; | |
4621 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4622 | case -NFS4ERR_OPENMODE: |
4623 | if (state == NULL) | |
4624 | break; | |
5d422301 TM |
4625 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4626 | goto stateid_invalid; | |
0400a6b0 | 4627 | goto wait_on_recovery; |
0ced63d1 | 4628 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4629 | if (state != NULL) { |
4630 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4631 | goto stateid_invalid; | |
4632 | } | |
1da177e4 | 4633 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4634 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4635 | nfs4_schedule_lease_recovery(clp); |
4636 | goto wait_on_recovery; | |
4745e315 AA |
4637 | #if defined(CONFIG_NFS_V4_1) |
4638 | case -NFS4ERR_BADSESSION: | |
4639 | case -NFS4ERR_BADSLOT: | |
4640 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4641 | case -NFS4ERR_DEADSESSION: | |
4642 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4643 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4644 | case -NFS4ERR_SEQ_MISORDERED: | |
4645 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4646 | task->tk_status); | |
9f594791 | 4647 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4648 | task->tk_status = 0; |
4649 | return -EAGAIN; | |
4650 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4651 | case -NFS4ERR_DELAY: |
aa5190d0 | 4652 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4653 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4654 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4655 | task->tk_status = 0; | |
4656 | return -EAGAIN; | |
a8a4ae3a | 4657 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4658 | case -NFS4ERR_OLD_STATEID: |
4659 | task->tk_status = 0; | |
4660 | return -EAGAIN; | |
4661 | } | |
4662 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4663 | return 0; | |
5d422301 TM |
4664 | stateid_invalid: |
4665 | task->tk_status = -EIO; | |
4666 | return 0; | |
0400a6b0 | 4667 | wait_on_recovery: |
a2c0b9e2 | 4668 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4669 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4670 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4671 | task->tk_status = 0; | |
4672 | return -EAGAIN; | |
1da177e4 LT |
4673 | } |
4674 | ||
f092075d CL |
4675 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4676 | nfs4_verifier *bootverf) | |
cd93710e CL |
4677 | { |
4678 | __be32 verf[2]; | |
4679 | ||
2c820d9a CL |
4680 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4681 | /* An impossible timestamp guarantees this value | |
4682 | * will never match a generated boot time. */ | |
4683 | verf[0] = 0; | |
17f26b12 | 4684 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4685 | } else { |
f092075d | 4686 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4687 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4688 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4689 | } |
cd93710e CL |
4690 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4691 | } | |
4692 | ||
e984a55a CL |
4693 | static unsigned int |
4694 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4695 | char *buf, size_t len) | |
4696 | { | |
4697 | unsigned int result; | |
4698 | ||
4699 | rcu_read_lock(); | |
4700 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4701 | clp->cl_ipaddr, | |
4702 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4703 | RPC_DISPLAY_ADDR), | |
4704 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4705 | RPC_DISPLAY_PROTO)); | |
4706 | rcu_read_unlock(); | |
4707 | return result; | |
4708 | } | |
4709 | ||
4710 | static unsigned int | |
4711 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4712 | char *buf, size_t len) | |
4713 | { | |
55b59293 | 4714 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4715 | |
4716 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4717 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4718 | clp->rpc_ops->version, | |
4719 | clp->cl_minorversion, | |
4720 | nfs4_client_id_uniquifier, | |
4721 | nodename); | |
e984a55a CL |
4722 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4723 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4724 | nodename); |
e984a55a CL |
4725 | } |
4726 | ||
6bbb4ae8 CL |
4727 | /** |
4728 | * nfs4_proc_setclientid - Negotiate client ID | |
4729 | * @clp: state data structure | |
4730 | * @program: RPC program for NFSv4 callback service | |
4731 | * @port: IP port number for NFS4 callback service | |
4732 | * @cred: RPC credential to use for this call | |
4733 | * @res: where to place the result | |
4734 | * | |
4735 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4736 | */ | |
bb8b27e5 TM |
4737 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4738 | unsigned short port, struct rpc_cred *cred, | |
4739 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4740 | { |
4741 | nfs4_verifier sc_verifier; | |
4742 | struct nfs4_setclientid setclientid = { | |
4743 | .sc_verifier = &sc_verifier, | |
4744 | .sc_prog = program, | |
f4eecd5d | 4745 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4746 | }; |
4747 | struct rpc_message msg = { | |
4748 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4749 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4750 | .rpc_resp = res, |
286d7d6a | 4751 | .rpc_cred = cred, |
1da177e4 | 4752 | }; |
6bbb4ae8 | 4753 | int status; |
1da177e4 | 4754 | |
de734831 | 4755 | /* nfs_client_id4 */ |
f092075d | 4756 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4757 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4758 | setclientid.sc_name_len = | |
4759 | nfs4_init_uniform_client_string(clp, | |
4760 | setclientid.sc_name, | |
4761 | sizeof(setclientid.sc_name)); | |
4762 | else | |
4763 | setclientid.sc_name_len = | |
4764 | nfs4_init_nonuniform_client_string(clp, | |
4765 | setclientid.sc_name, | |
4766 | sizeof(setclientid.sc_name)); | |
de734831 | 4767 | /* cb_client4 */ |
e984a55a | 4768 | rcu_read_lock(); |
de734831 | 4769 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
fe2d5395 | 4770 | sizeof(setclientid.sc_netid), "%s", |
d4d3c507 CL |
4771 | rpc_peeraddr2str(clp->cl_rpcclient, |
4772 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4773 | rcu_read_unlock(); |
4774 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4775 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4776 | clp->cl_ipaddr, port >> 8, port & 255); |
4777 | ||
6bbb4ae8 CL |
4778 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4779 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4780 | setclientid.sc_name_len, setclientid.sc_name); | |
4781 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4782 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4783 | dprintk("NFS reply setclientid: %d\n", status); |
4784 | return status; | |
1da177e4 LT |
4785 | } |
4786 | ||
6bbb4ae8 CL |
4787 | /** |
4788 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4789 | * @clp: state data structure | |
4790 | * @res: result of a previous SETCLIENTID | |
4791 | * @cred: RPC credential to use for this call | |
4792 | * | |
4793 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4794 | */ | |
fd954ae1 | 4795 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4796 | struct nfs4_setclientid_res *arg, |
4797 | struct rpc_cred *cred) | |
1da177e4 | 4798 | { |
1da177e4 LT |
4799 | struct rpc_message msg = { |
4800 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4801 | .rpc_argp = arg, |
286d7d6a | 4802 | .rpc_cred = cred, |
1da177e4 | 4803 | }; |
1da177e4 LT |
4804 | int status; |
4805 | ||
6bbb4ae8 CL |
4806 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4807 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4808 | clp->cl_clientid); | |
1bd714f2 | 4809 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4810 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4811 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4812 | return status; |
4813 | } | |
4814 | ||
fe650407 TM |
4815 | struct nfs4_delegreturndata { |
4816 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4817 | struct nfs4_delegreturnres res; |
fe650407 TM |
4818 | struct nfs_fh fh; |
4819 | nfs4_stateid stateid; | |
26e976a8 | 4820 | unsigned long timestamp; |
fa178f29 | 4821 | struct nfs_fattr fattr; |
fe650407 TM |
4822 | int rpc_status; |
4823 | }; | |
4824 | ||
fe650407 TM |
4825 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4826 | { | |
4827 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4828 | |
14516c3a TM |
4829 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4830 | return; | |
938e1010 | 4831 | |
ca8acf8d | 4832 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 RL |
4833 | switch (task->tk_status) { |
4834 | case -NFS4ERR_STALE_STATEID: | |
4835 | case -NFS4ERR_EXPIRED: | |
4836 | case 0: | |
fa178f29 | 4837 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4838 | break; |
4839 | default: | |
4840 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4841 | -EAGAIN) { | |
d00c5d43 | 4842 | rpc_restart_call_prepare(task); |
79708861 RL |
4843 | return; |
4844 | } | |
4845 | } | |
4846 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4847 | } |
4848 | ||
4849 | static void nfs4_delegreturn_release(void *calldata) | |
4850 | { | |
fe650407 TM |
4851 | kfree(calldata); |
4852 | } | |
4853 | ||
938e1010 AA |
4854 | #if defined(CONFIG_NFS_V4_1) |
4855 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4856 | { | |
4857 | struct nfs4_delegreturndata *d_data; | |
4858 | ||
4859 | d_data = (struct nfs4_delegreturndata *)data; | |
4860 | ||
d9afbd1b TM |
4861 | nfs4_setup_sequence(d_data->res.server, |
4862 | &d_data->args.seq_args, | |
4863 | &d_data->res.seq_res, | |
4864 | task); | |
938e1010 AA |
4865 | } |
4866 | #endif /* CONFIG_NFS_V4_1 */ | |
4867 | ||
c8d149f3 | 4868 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4869 | #if defined(CONFIG_NFS_V4_1) |
4870 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4871 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4872 | .rpc_call_done = nfs4_delegreturn_done, |
4873 | .rpc_release = nfs4_delegreturn_release, | |
4874 | }; | |
4875 | ||
e6f81075 | 4876 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4877 | { |
4878 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4879 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4880 | struct rpc_task *task; |
5138fde0 TM |
4881 | struct rpc_message msg = { |
4882 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4883 | .rpc_cred = cred, | |
4884 | }; | |
c970aa85 TM |
4885 | struct rpc_task_setup task_setup_data = { |
4886 | .rpc_client = server->client, | |
5138fde0 | 4887 | .rpc_message = &msg, |
c970aa85 TM |
4888 | .callback_ops = &nfs4_delegreturn_ops, |
4889 | .flags = RPC_TASK_ASYNC, | |
4890 | }; | |
e6f81075 | 4891 | int status = 0; |
fe650407 | 4892 | |
8535b2be | 4893 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4894 | if (data == NULL) |
4895 | return -ENOMEM; | |
9d12b216 | 4896 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4897 | data->args.fhandle = &data->fh; |
4898 | data->args.stateid = &data->stateid; | |
9e907fec | 4899 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4900 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4901 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4902 | data->res.fattr = &data->fattr; |
4903 | data->res.server = server; | |
5138fde0 | 4904 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4905 | data->timestamp = jiffies; |
fe650407 TM |
4906 | data->rpc_status = 0; |
4907 | ||
c970aa85 | 4908 | task_setup_data.callback_data = data; |
1174dd1f TM |
4909 | msg.rpc_argp = &data->args; |
4910 | msg.rpc_resp = &data->res; | |
c970aa85 | 4911 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4912 | if (IS_ERR(task)) |
fe650407 | 4913 | return PTR_ERR(task); |
e6f81075 TM |
4914 | if (!issync) |
4915 | goto out; | |
fe650407 | 4916 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4917 | if (status != 0) |
4918 | goto out; | |
4919 | status = data->rpc_status; | |
e144cbcc TM |
4920 | if (status == 0) |
4921 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4922 | else | |
4923 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4924 | out: |
e6b3c4db | 4925 | rpc_put_task(task); |
fe650407 | 4926 | return status; |
1da177e4 LT |
4927 | } |
4928 | ||
e6f81075 | 4929 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4930 | { |
4931 | struct nfs_server *server = NFS_SERVER(inode); | |
4932 | struct nfs4_exception exception = { }; | |
4933 | int err; | |
4934 | do { | |
e6f81075 | 4935 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 4936 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
4937 | switch (err) { |
4938 | case -NFS4ERR_STALE_STATEID: | |
4939 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4940 | case 0: |
4941 | return 0; | |
4942 | } | |
4943 | err = nfs4_handle_exception(server, err, &exception); | |
4944 | } while (exception.retry); | |
4945 | return err; | |
4946 | } | |
4947 | ||
4948 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4949 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4950 | ||
4951 | /* | |
4952 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4953 | */ | |
4954 | static unsigned long | |
4955 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4956 | { | |
416ad3c9 | 4957 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
4958 | timeout <<= 1; |
4959 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4960 | return NFS4_LOCK_MAXTIMEOUT; | |
4961 | return timeout; | |
4962 | } | |
4963 | ||
1da177e4 LT |
4964 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4965 | { | |
4966 | struct inode *inode = state->inode; | |
4967 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4968 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4969 | struct nfs_lockt_args arg = { |
1da177e4 | 4970 | .fh = NFS_FH(inode), |
911d1aaf | 4971 | .fl = request, |
1da177e4 | 4972 | }; |
911d1aaf TM |
4973 | struct nfs_lockt_res res = { |
4974 | .denied = request, | |
1da177e4 LT |
4975 | }; |
4976 | struct rpc_message msg = { | |
4977 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4978 | .rpc_argp = &arg, | |
4979 | .rpc_resp = &res, | |
4980 | .rpc_cred = state->owner->so_cred, | |
4981 | }; | |
1da177e4 LT |
4982 | struct nfs4_lock_state *lsp; |
4983 | int status; | |
4984 | ||
911d1aaf | 4985 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4986 | status = nfs4_set_lock_state(state, request); |
4987 | if (status != 0) | |
4988 | goto out; | |
4989 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4990 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4991 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4992 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4993 | switch (status) { |
4994 | case 0: | |
4995 | request->fl_type = F_UNLCK; | |
4996 | break; | |
4997 | case -NFS4ERR_DENIED: | |
4998 | status = 0; | |
1da177e4 | 4999 | } |
70cc6487 | 5000 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 5001 | out: |
1da177e4 LT |
5002 | return status; |
5003 | } | |
5004 | ||
5005 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5006 | { | |
5007 | struct nfs4_exception exception = { }; | |
5008 | int err; | |
5009 | ||
5010 | do { | |
d1b748a5 TM |
5011 | err = _nfs4_proc_getlk(state, cmd, request); |
5012 | trace_nfs4_get_lock(request, state, cmd, err); | |
5013 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5014 | &exception); |
5015 | } while (exception.retry); | |
5016 | return err; | |
5017 | } | |
5018 | ||
5019 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5020 | { | |
5021 | int res = 0; | |
5022 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5023 | case FL_POSIX: | |
5024 | res = posix_lock_file_wait(file, fl); | |
5025 | break; | |
5026 | case FL_FLOCK: | |
5027 | res = flock_lock_file_wait(file, fl); | |
5028 | break; | |
5029 | default: | |
5030 | BUG(); | |
5031 | } | |
1da177e4 LT |
5032 | return res; |
5033 | } | |
5034 | ||
faf5f49c | 5035 | struct nfs4_unlockdata { |
911d1aaf TM |
5036 | struct nfs_locku_args arg; |
5037 | struct nfs_locku_res res; | |
faf5f49c TM |
5038 | struct nfs4_lock_state *lsp; |
5039 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5040 | struct file_lock fl; |
5041 | const struct nfs_server *server; | |
26e976a8 | 5042 | unsigned long timestamp; |
faf5f49c TM |
5043 | }; |
5044 | ||
911d1aaf TM |
5045 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5046 | struct nfs_open_context *ctx, | |
5047 | struct nfs4_lock_state *lsp, | |
5048 | struct nfs_seqid *seqid) | |
5049 | { | |
5050 | struct nfs4_unlockdata *p; | |
5051 | struct inode *inode = lsp->ls_state->inode; | |
5052 | ||
8535b2be | 5053 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5054 | if (p == NULL) |
5055 | return NULL; | |
5056 | p->arg.fh = NFS_FH(inode); | |
5057 | p->arg.fl = &p->fl; | |
5058 | p->arg.seqid = seqid; | |
c1d51931 | 5059 | p->res.seqid = seqid; |
911d1aaf TM |
5060 | p->arg.stateid = &lsp->ls_stateid; |
5061 | p->lsp = lsp; | |
5062 | atomic_inc(&lsp->ls_count); | |
5063 | /* Ensure we don't close file until we're done freeing locks! */ | |
5064 | p->ctx = get_nfs_open_context(ctx); | |
5065 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5066 | p->server = NFS_SERVER(inode); | |
5067 | return p; | |
5068 | } | |
5069 | ||
06f814a3 | 5070 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5071 | { |
963d8fe5 | 5072 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5073 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5074 | nfs4_put_lock_state(calldata->lsp); |
5075 | put_nfs_open_context(calldata->ctx); | |
5076 | kfree(calldata); | |
faf5f49c TM |
5077 | } |
5078 | ||
963d8fe5 | 5079 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5080 | { |
963d8fe5 | 5081 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5082 | |
14516c3a TM |
5083 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5084 | return; | |
faf5f49c TM |
5085 | switch (task->tk_status) { |
5086 | case 0: | |
f597c537 TM |
5087 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5088 | &calldata->res.stateid); | |
26e976a8 | 5089 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5090 | break; |
9e33bed5 TM |
5091 | case -NFS4ERR_BAD_STATEID: |
5092 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5093 | case -NFS4ERR_STALE_STATEID: |
5094 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5095 | break; |
5096 | default: | |
9e33bed5 | 5097 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5098 | rpc_restart_call_prepare(task); |
faf5f49c | 5099 | } |
2b1bc308 | 5100 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5101 | } |
5102 | ||
4ce70ada | 5103 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5104 | { |
4ce70ada | 5105 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5106 | |
911d1aaf | 5107 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5108 | goto out_wait; |
795a88c9 | 5109 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5110 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5111 | goto out_no_action; |
faf5f49c | 5112 | } |
26e976a8 | 5113 | calldata->timestamp = jiffies; |
035168ab | 5114 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5115 | &calldata->arg.seq_args, |
2240a9e2 TM |
5116 | &calldata->res.seq_res, |
5117 | task) != 0) | |
5118 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5119 | return; |
5120 | out_no_action: | |
5121 | task->tk_action = NULL; | |
5122 | out_wait: | |
5123 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5124 | } |
5125 | ||
963d8fe5 | 5126 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5127 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5128 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5129 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5130 | }; |
5131 | ||
a5d16a4d TM |
5132 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5133 | struct nfs_open_context *ctx, | |
5134 | struct nfs4_lock_state *lsp, | |
5135 | struct nfs_seqid *seqid) | |
5136 | { | |
5137 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5138 | struct rpc_message msg = { |
5139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5140 | .rpc_cred = ctx->cred, | |
5141 | }; | |
c970aa85 TM |
5142 | struct rpc_task_setup task_setup_data = { |
5143 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5144 | .rpc_message = &msg, |
c970aa85 | 5145 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5146 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5147 | .flags = RPC_TASK_ASYNC, |
5148 | }; | |
a5d16a4d | 5149 | |
137d6aca FF |
5150 | /* Ensure this is an unlock - when canceling a lock, the |
5151 | * canceled lock is passed in, and it won't be an unlock. | |
5152 | */ | |
5153 | fl->fl_type = F_UNLCK; | |
5154 | ||
a5d16a4d TM |
5155 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5156 | if (data == NULL) { | |
5157 | nfs_free_seqid(seqid); | |
5158 | return ERR_PTR(-ENOMEM); | |
5159 | } | |
5160 | ||
9d12b216 | 5161 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5162 | msg.rpc_argp = &data->arg; |
5163 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5164 | task_setup_data.callback_data = data; |
5165 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5166 | } |
5167 | ||
faf5f49c TM |
5168 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5169 | { | |
65b62a29 TM |
5170 | struct inode *inode = state->inode; |
5171 | struct nfs4_state_owner *sp = state->owner; | |
5172 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5173 | struct nfs_seqid *seqid; |
1da177e4 | 5174 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5175 | struct rpc_task *task; |
5176 | int status = 0; | |
536ff0f8 | 5177 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5178 | |
8d0a8a9d | 5179 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5180 | /* Unlock _before_ we do the RPC call */ |
5181 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5182 | /* Exclude nfs_delegation_claim_locks() */ |
5183 | mutex_lock(&sp->so_delegreturn_mutex); | |
5184 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5185 | down_read(&nfsi->rwsem); |
5186 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5187 | up_read(&nfsi->rwsem); | |
65b62a29 | 5188 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5189 | goto out; |
19e03c57 TM |
5190 | } |
5191 | up_read(&nfsi->rwsem); | |
65b62a29 | 5192 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5193 | if (status != 0) |
9b073574 TM |
5194 | goto out; |
5195 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5196 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5197 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5198 | goto out; | |
8535b2be | 5199 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5200 | status = -ENOMEM; |
911d1aaf | 5201 | if (seqid == NULL) |
9b073574 | 5202 | goto out; |
cd3758e3 | 5203 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5204 | status = PTR_ERR(task); |
5205 | if (IS_ERR(task)) | |
9b073574 | 5206 | goto out; |
a5d16a4d | 5207 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5208 | rpc_put_task(task); |
9b073574 | 5209 | out: |
536ff0f8 | 5210 | request->fl_flags = fl_flags; |
d1b748a5 | 5211 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5212 | return status; |
5213 | } | |
5214 | ||
a5d16a4d TM |
5215 | struct nfs4_lockdata { |
5216 | struct nfs_lock_args arg; | |
5217 | struct nfs_lock_res res; | |
5218 | struct nfs4_lock_state *lsp; | |
5219 | struct nfs_open_context *ctx; | |
5220 | struct file_lock fl; | |
26e976a8 | 5221 | unsigned long timestamp; |
a5d16a4d TM |
5222 | int rpc_status; |
5223 | int cancelled; | |
66179efe | 5224 | struct nfs_server *server; |
a5d16a4d TM |
5225 | }; |
5226 | ||
5227 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5228 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5229 | gfp_t gfp_mask) | |
1da177e4 | 5230 | { |
a5d16a4d TM |
5231 | struct nfs4_lockdata *p; |
5232 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5233 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5234 | |
8535b2be | 5235 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5236 | if (p == NULL) |
5237 | return NULL; | |
5238 | ||
5239 | p->arg.fh = NFS_FH(inode); | |
5240 | p->arg.fl = &p->fl; | |
8535b2be | 5241 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5242 | if (p->arg.open_seqid == NULL) |
5243 | goto out_free; | |
8535b2be | 5244 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5245 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5246 | goto out_free_seqid; |
a5d16a4d | 5247 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5248 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5249 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5250 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5251 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5252 | p->lsp = lsp; |
66179efe | 5253 | p->server = server; |
a5d16a4d TM |
5254 | atomic_inc(&lsp->ls_count); |
5255 | p->ctx = get_nfs_open_context(ctx); | |
5256 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5257 | return p; | |
2f74c0a0 TM |
5258 | out_free_seqid: |
5259 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5260 | out_free: |
5261 | kfree(p); | |
5262 | return NULL; | |
5263 | } | |
5264 | ||
5265 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5266 | { | |
5267 | struct nfs4_lockdata *data = calldata; | |
5268 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5269 | |
3110ff80 | 5270 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5271 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5272 | goto out_wait; |
a5d16a4d TM |
5273 | /* Do we need to do an open_to_lock_owner? */ |
5274 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5275 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5276 | goto out_release_lock_seqid; |
8fe72bac | 5277 | } |
8e472f33 | 5278 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5279 | data->arg.new_lock_owner = 1; |
c1d51931 | 5280 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5281 | } else |
5282 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5283 | if (!nfs4_valid_open_stateid(state)) { |
5284 | data->rpc_status = -EBADF; | |
5285 | task->tk_action = NULL; | |
5286 | goto out_release_open_seqid; | |
5287 | } | |
26e976a8 | 5288 | data->timestamp = jiffies; |
035168ab TM |
5289 | if (nfs4_setup_sequence(data->server, |
5290 | &data->arg.seq_args, | |
2240a9e2 | 5291 | &data->res.seq_res, |
d9afbd1b | 5292 | task) == 0) |
66179efe | 5293 | return; |
5d422301 | 5294 | out_release_open_seqid: |
2240a9e2 TM |
5295 | nfs_release_seqid(data->arg.open_seqid); |
5296 | out_release_lock_seqid: | |
5297 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5298 | out_wait: |
5299 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5300 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5301 | } |
5302 | ||
a5d16a4d TM |
5303 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5304 | { | |
5305 | struct nfs4_lockdata *data = calldata; | |
5306 | ||
3110ff80 | 5307 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5308 | |
14516c3a TM |
5309 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5310 | return; | |
66179efe | 5311 | |
a5d16a4d | 5312 | data->rpc_status = task->tk_status; |
a5d16a4d | 5313 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5314 | if (data->rpc_status == 0) |
5315 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5316 | else | |
5317 | goto out; | |
5318 | } | |
5319 | if (data->rpc_status == 0) { | |
f597c537 | 5320 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5321 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5322 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5323 | } |
a5d16a4d | 5324 | out: |
3110ff80 | 5325 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5326 | } |
5327 | ||
5328 | static void nfs4_lock_release(void *calldata) | |
5329 | { | |
5330 | struct nfs4_lockdata *data = calldata; | |
5331 | ||
3110ff80 | 5332 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5333 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5334 | if (data->cancelled != 0) { |
5335 | struct rpc_task *task; | |
5336 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5337 | data->arg.lock_seqid); | |
5338 | if (!IS_ERR(task)) | |
bf294b41 | 5339 | rpc_put_task_async(task); |
3110ff80 | 5340 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5341 | } else |
5342 | nfs_free_seqid(data->arg.lock_seqid); | |
5343 | nfs4_put_lock_state(data->lsp); | |
5344 | put_nfs_open_context(data->ctx); | |
5345 | kfree(data); | |
3110ff80 | 5346 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5347 | } |
5348 | ||
5349 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5350 | .rpc_call_prepare = nfs4_lock_prepare, | |
5351 | .rpc_call_done = nfs4_lock_done, | |
5352 | .rpc_release = nfs4_lock_release, | |
5353 | }; | |
5354 | ||
2bee72a6 TM |
5355 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5356 | { | |
2bee72a6 TM |
5357 | switch (error) { |
5358 | case -NFS4ERR_ADMIN_REVOKED: | |
5359 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5360 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5361 | if (new_lock_owner != 0 || |
795a88c9 | 5362 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5363 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5364 | break; |
5365 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5366 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5367 | case -NFS4ERR_EXPIRED: |
5368 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5369 | }; |
5370 | } | |
5371 | ||
afe6c27c | 5372 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5373 | { |
5374 | struct nfs4_lockdata *data; | |
5375 | struct rpc_task *task; | |
5138fde0 TM |
5376 | struct rpc_message msg = { |
5377 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5378 | .rpc_cred = state->owner->so_cred, | |
5379 | }; | |
c970aa85 TM |
5380 | struct rpc_task_setup task_setup_data = { |
5381 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5382 | .rpc_message = &msg, |
c970aa85 | 5383 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5384 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5385 | .flags = RPC_TASK_ASYNC, |
5386 | }; | |
a5d16a4d TM |
5387 | int ret; |
5388 | ||
3110ff80 | 5389 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5390 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5391 | fl->fl_u.nfs4_fl.owner, |
5392 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5393 | if (data == NULL) |
5394 | return -ENOMEM; | |
5395 | if (IS_SETLKW(cmd)) | |
5396 | data->arg.block = 1; | |
9d12b216 | 5397 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5398 | msg.rpc_argp = &data->arg; |
5399 | msg.rpc_resp = &data->res; | |
c970aa85 | 5400 | task_setup_data.callback_data = data; |
8fe72bac TM |
5401 | if (recovery_type > NFS_LOCK_NEW) { |
5402 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5403 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5404 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5405 | } | |
c970aa85 | 5406 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5407 | if (IS_ERR(task)) |
a5d16a4d | 5408 | return PTR_ERR(task); |
a5d16a4d TM |
5409 | ret = nfs4_wait_for_completion_rpc_task(task); |
5410 | if (ret == 0) { | |
5411 | ret = data->rpc_status; | |
2bee72a6 TM |
5412 | if (ret) |
5413 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5414 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5415 | } else |
5416 | data->cancelled = 1; | |
e6b3c4db | 5417 | rpc_put_task(task); |
3110ff80 | 5418 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5419 | return ret; |
1da177e4 LT |
5420 | } |
5421 | ||
5422 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5423 | { | |
202b50dc | 5424 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5425 | struct nfs4_exception exception = { |
5426 | .inode = state->inode, | |
5427 | }; | |
202b50dc TM |
5428 | int err; |
5429 | ||
5430 | do { | |
42a2d13e TM |
5431 | /* Cache the lock if possible... */ |
5432 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5433 | return 0; | |
afe6c27c | 5434 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5435 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5436 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5437 | break; |
5438 | nfs4_handle_exception(server, err, &exception); | |
5439 | } while (exception.retry); | |
5440 | return err; | |
1da177e4 LT |
5441 | } |
5442 | ||
5443 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5444 | { | |
202b50dc | 5445 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5446 | struct nfs4_exception exception = { |
5447 | .inode = state->inode, | |
5448 | }; | |
202b50dc TM |
5449 | int err; |
5450 | ||
6bfc93ef TM |
5451 | err = nfs4_set_lock_state(state, request); |
5452 | if (err != 0) | |
5453 | return err; | |
202b50dc | 5454 | do { |
42a2d13e TM |
5455 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5456 | return 0; | |
afe6c27c | 5457 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5458 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5459 | switch (err) { |
5460 | default: | |
5461 | goto out; | |
5462 | case -NFS4ERR_GRACE: | |
5463 | case -NFS4ERR_DELAY: | |
5464 | nfs4_handle_exception(server, err, &exception); | |
5465 | err = 0; | |
5466 | } | |
202b50dc | 5467 | } while (exception.retry); |
a9ed2e25 | 5468 | out: |
202b50dc | 5469 | return err; |
1da177e4 LT |
5470 | } |
5471 | ||
f062eb6c | 5472 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5473 | /** |
5474 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5475 | * | |
5476 | * @state: NFSv4 state for an inode | |
5477 | * | |
5478 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5479 | * Otherwise a negative NFS4ERR value is returned. | |
5480 | */ | |
b01dd1d8 | 5481 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5482 | { |
eb64cf96 | 5483 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5484 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5485 | struct nfs_server *server = NFS_SERVER(state->inode); |
5486 | ||
b01dd1d8 | 5487 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5488 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5489 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5490 | ||
5491 | status = nfs41_test_stateid(server, | |
5492 | &lsp->ls_stateid, | |
5493 | cred); | |
08cb47fa | 5494 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5495 | if (status != NFS_OK) { |
3e60ffdd CL |
5496 | /* Free the stateid unless the server |
5497 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5498 | if (status != -NFS4ERR_BAD_STATEID) |
5499 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5500 | &lsp->ls_stateid, |
5501 | cred); | |
795a88c9 | 5502 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5503 | ret = status; |
5504 | } | |
5505 | } | |
5506 | }; | |
5507 | ||
5508 | return ret; | |
5509 | } | |
5510 | ||
5511 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5512 | { | |
5513 | int status = NFS_OK; | |
5514 | ||
5515 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5516 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5517 | if (status != NFS_OK) |
5518 | status = nfs4_lock_expired(state, request); | |
5519 | return status; | |
f062eb6c BS |
5520 | } |
5521 | #endif | |
5522 | ||
1da177e4 LT |
5523 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5524 | { | |
9a99af49 | 5525 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5526 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5527 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5528 | unsigned int seq; |
8e469ebd | 5529 | int status = -ENOLCK; |
1da177e4 | 5530 | |
8e469ebd TM |
5531 | if ((fl_flags & FL_POSIX) && |
5532 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5533 | goto out; | |
6bfc93ef | 5534 | /* Is this a delegated open? */ |
6bfc93ef TM |
5535 | status = nfs4_set_lock_state(state, request); |
5536 | if (status != 0) | |
5537 | goto out; | |
01c3b861 TM |
5538 | request->fl_flags |= FL_ACCESS; |
5539 | status = do_vfs_lock(request->fl_file, request); | |
5540 | if (status < 0) | |
5541 | goto out; | |
19e03c57 | 5542 | down_read(&nfsi->rwsem); |
01c3b861 | 5543 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5544 | /* Yes: cache locks! */ |
01c3b861 | 5545 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5546 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5547 | status = do_vfs_lock(request->fl_file, request); | |
5548 | goto out_unlock; | |
01c3b861 | 5549 | } |
9a99af49 TM |
5550 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5551 | up_read(&nfsi->rwsem); | |
afe6c27c | 5552 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5553 | if (status != 0) |
9a99af49 TM |
5554 | goto out; |
5555 | down_read(&nfsi->rwsem); | |
5556 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5557 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5558 | goto out_unlock; |
9a99af49 | 5559 | } |
6bfc93ef | 5560 | /* Note: we always want to sleep here! */ |
01c3b861 | 5561 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5562 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5563 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5564 | "manager!\n", __func__); | |
01c3b861 | 5565 | out_unlock: |
19e03c57 | 5566 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5567 | out: |
5568 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5569 | return status; |
5570 | } | |
5571 | ||
5572 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5573 | { | |
a1d0b5ee TM |
5574 | struct nfs4_exception exception = { |
5575 | .state = state, | |
05ffe24f | 5576 | .inode = state->inode, |
a1d0b5ee | 5577 | }; |
1da177e4 LT |
5578 | int err; |
5579 | ||
5580 | do { | |
965b5d67 | 5581 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5582 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5583 | if (err == -NFS4ERR_DENIED) |
5584 | err = -EAGAIN; | |
1da177e4 | 5585 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5586 | err, &exception); |
1da177e4 LT |
5587 | } while (exception.retry); |
5588 | return err; | |
5589 | } | |
5590 | ||
5591 | static int | |
5592 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5593 | { | |
5594 | struct nfs_open_context *ctx; | |
5595 | struct nfs4_state *state; | |
5596 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5597 | int status; | |
5598 | ||
5599 | /* verify open state */ | |
cd3758e3 | 5600 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5601 | state = ctx->state; |
5602 | ||
5603 | if (request->fl_start < 0 || request->fl_end < 0) | |
5604 | return -EINVAL; | |
5605 | ||
d953126a TM |
5606 | if (IS_GETLK(cmd)) { |
5607 | if (state != NULL) | |
5608 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5609 | return 0; | |
5610 | } | |
1da177e4 LT |
5611 | |
5612 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5613 | return -EINVAL; | |
5614 | ||
d953126a TM |
5615 | if (request->fl_type == F_UNLCK) { |
5616 | if (state != NULL) | |
5617 | return nfs4_proc_unlck(state, cmd, request); | |
5618 | return 0; | |
5619 | } | |
1da177e4 | 5620 | |
d953126a TM |
5621 | if (state == NULL) |
5622 | return -ENOLCK; | |
55725513 TM |
5623 | /* |
5624 | * Don't rely on the VFS having checked the file open mode, | |
5625 | * since it won't do this for flock() locks. | |
5626 | */ | |
f44106e2 | 5627 | switch (request->fl_type) { |
55725513 TM |
5628 | case F_RDLCK: |
5629 | if (!(filp->f_mode & FMODE_READ)) | |
5630 | return -EBADF; | |
5631 | break; | |
5632 | case F_WRLCK: | |
5633 | if (!(filp->f_mode & FMODE_WRITE)) | |
5634 | return -EBADF; | |
5635 | } | |
5636 | ||
1da177e4 LT |
5637 | do { |
5638 | status = nfs4_proc_setlk(state, cmd, request); | |
5639 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5640 | break; | |
5641 | timeout = nfs4_set_lock_task_retry(timeout); | |
5642 | status = -ERESTARTSYS; | |
5643 | if (signalled()) | |
5644 | break; | |
5645 | } while(status < 0); | |
1da177e4 LT |
5646 | return status; |
5647 | } | |
5648 | ||
db4f2e63 | 5649 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5650 | { |
5651 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5652 | int err; |
5653 | ||
5654 | err = nfs4_set_lock_state(state, fl); | |
5655 | if (err != 0) | |
db4f2e63 | 5656 | return err; |
4a706fa0 | 5657 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5658 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5659 | } |
6b3b5496 | 5660 | |
cf470c3e TM |
5661 | struct nfs_release_lockowner_data { |
5662 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5663 | struct nfs_server *server; |
cf470c3e TM |
5664 | struct nfs_release_lockowner_args args; |
5665 | }; | |
5666 | ||
d3c7b7cc TM |
5667 | static void nfs4_release_lockowner_release(void *calldata) |
5668 | { | |
cf470c3e | 5669 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5670 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5671 | kfree(calldata); |
5672 | } | |
5673 | ||
17280175 | 5674 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5675 | .rpc_release = nfs4_release_lockowner_release, |
5676 | }; | |
5677 | ||
c8b2d0bf | 5678 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5679 | { |
cf470c3e | 5680 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5681 | struct rpc_message msg = { |
5682 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5683 | }; | |
5684 | ||
5685 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5686 | return -EINVAL; |
5687 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5688 | if (!data) | |
5689 | return -ENOMEM; | |
5690 | data->lsp = lsp; | |
5ae67c4f | 5691 | data->server = server; |
cf470c3e TM |
5692 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5693 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5694 | data->args.lock_owner.s_dev = server->s_dev; | |
5695 | msg.rpc_argp = &data->args; | |
5696 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5697 | return 0; | |
d3c7b7cc TM |
5698 | } |
5699 | ||
aa1870af BF |
5700 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5701 | ||
64c2ce8b AK |
5702 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5703 | const void *buf, size_t buflen, | |
5704 | int flags, int type) | |
6b3b5496 | 5705 | { |
64c2ce8b AK |
5706 | if (strcmp(key, "") != 0) |
5707 | return -EINVAL; | |
4b580ee3 | 5708 | |
64c2ce8b | 5709 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5710 | } |
5711 | ||
64c2ce8b AK |
5712 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5713 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5714 | { |
64c2ce8b AK |
5715 | if (strcmp(key, "") != 0) |
5716 | return -EINVAL; | |
aa1870af | 5717 | |
64c2ce8b | 5718 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5719 | } |
5720 | ||
64c2ce8b AK |
5721 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5722 | size_t list_len, const char *name, | |
5723 | size_t name_len, int type) | |
6b3b5496 | 5724 | { |
64c2ce8b | 5725 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5726 | |
096455a2 BF |
5727 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5728 | return 0; | |
64c2ce8b AK |
5729 | |
5730 | if (list && len <= list_len) | |
5731 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5732 | return len; |
6b3b5496 BF |
5733 | } |
5734 | ||
c9bccef6 DQ |
5735 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5736 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5737 | { | |
5738 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5739 | } | |
5740 | ||
5741 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5742 | const void *buf, size_t buflen, | |
5743 | int flags, int type) | |
5744 | { | |
5745 | if (security_ismaclabel(key)) | |
5746 | return nfs4_set_security_label(dentry, buf, buflen); | |
5747 | ||
5748 | return -EOPNOTSUPP; | |
5749 | } | |
5750 | ||
5751 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5752 | void *buf, size_t buflen, int type) | |
5753 | { | |
5754 | if (security_ismaclabel(key)) | |
5755 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5756 | return -EOPNOTSUPP; | |
5757 | } | |
5758 | ||
5759 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5760 | size_t list_len, const char *name, | |
5761 | size_t name_len, int type) | |
5762 | { | |
5763 | size_t len = 0; | |
5764 | ||
5765 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5766 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5767 | if (list && len <= list_len) | |
5768 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5769 | } | |
5770 | return len; | |
5771 | } | |
5772 | ||
5773 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5774 | .prefix = XATTR_SECURITY_PREFIX, | |
5775 | .list = nfs4_xattr_list_nfs4_label, | |
5776 | .get = nfs4_xattr_get_nfs4_label, | |
5777 | .set = nfs4_xattr_set_nfs4_label, | |
5778 | }; | |
5779 | #endif | |
5780 | ||
5781 | ||
533eb461 AA |
5782 | /* |
5783 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5784 | */ | |
69aaaae1 TM |
5785 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5786 | { | |
533eb461 AA |
5787 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5788 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5789 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5790 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5791 | return; |
5792 | ||
5793 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5794 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5795 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5796 | fattr->nlink = 2; | |
5797 | } | |
5798 | ||
f05d147f BS |
5799 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5800 | const struct qstr *name, | |
5801 | struct nfs4_fs_locations *fs_locations, | |
5802 | struct page *page) | |
683b57b4 TM |
5803 | { |
5804 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5805 | u32 bitmask[3] = { |
361e624f | 5806 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5807 | }; |
5808 | struct nfs4_fs_locations_arg args = { | |
5809 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5810 | .name = name, |
683b57b4 TM |
5811 | .page = page, |
5812 | .bitmask = bitmask, | |
5813 | }; | |
22958463 BH |
5814 | struct nfs4_fs_locations_res res = { |
5815 | .fs_locations = fs_locations, | |
5816 | }; | |
683b57b4 TM |
5817 | struct rpc_message msg = { |
5818 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5819 | .rpc_argp = &args, | |
22958463 | 5820 | .rpc_resp = &res, |
683b57b4 TM |
5821 | }; |
5822 | int status; | |
5823 | ||
3110ff80 | 5824 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5825 | |
5826 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5827 | * is not supported */ | |
5828 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5829 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5830 | else | |
5831 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5832 | ||
c228fd3a | 5833 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5834 | fs_locations->server = server; |
830b8e33 | 5835 | fs_locations->nlocations = 0; |
f05d147f | 5836 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5837 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5838 | return status; |
5839 | } | |
5840 | ||
f05d147f BS |
5841 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5842 | const struct qstr *name, | |
5843 | struct nfs4_fs_locations *fs_locations, | |
5844 | struct page *page) | |
db0a9593 BS |
5845 | { |
5846 | struct nfs4_exception exception = { }; | |
5847 | int err; | |
5848 | do { | |
078ea3df TM |
5849 | err = _nfs4_proc_fs_locations(client, dir, name, |
5850 | fs_locations, page); | |
5851 | trace_nfs4_get_fs_locations(dir, name, err); | |
5852 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
5853 | &exception); |
5854 | } while (exception.retry); | |
5855 | return err; | |
5856 | } | |
5857 | ||
5ec16a85 | 5858 | /** |
a5250def WAA |
5859 | * If 'use_integrity' is true and the state managment nfs_client |
5860 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
5861 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
5862 | * Considerations sections. Otherwise, just use the user cred with the | |
5863 | * filesystem's rpc_client. | |
5ec16a85 | 5864 | */ |
a5250def | 5865 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
5866 | { |
5867 | int status; | |
5868 | struct nfs4_secinfo_arg args = { | |
5869 | .dir_fh = NFS_FH(dir), | |
5870 | .name = name, | |
5871 | }; | |
5872 | struct nfs4_secinfo_res res = { | |
5873 | .flavors = flavors, | |
5874 | }; | |
5875 | struct rpc_message msg = { | |
5876 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5877 | .rpc_argp = &args, | |
5878 | .rpc_resp = &res, | |
5879 | }; | |
a5250def WAA |
5880 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
5881 | ||
5882 | if (use_integrity) { | |
5883 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
5884 | msg.rpc_cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); | |
5885 | } | |
5a5ea0d4 BS |
5886 | |
5887 | dprintk("NFS call secinfo %s\n", name->name); | |
a5250def WAA |
5888 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
5889 | &res.seq_res, 0); | |
5a5ea0d4 | 5890 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def WAA |
5891 | |
5892 | if (msg.rpc_cred) | |
5893 | put_rpccred(msg.rpc_cred); | |
5894 | ||
5a5ea0d4 BS |
5895 | return status; |
5896 | } | |
5897 | ||
72de53ec BS |
5898 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5899 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5900 | { |
5901 | struct nfs4_exception exception = { }; | |
5902 | int err; | |
5903 | do { | |
a5250def WAA |
5904 | err = -NFS4ERR_WRONGSEC; |
5905 | ||
5906 | /* try to use integrity protection with machine cred */ | |
5907 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
5908 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
5909 | ||
5910 | /* | |
5911 | * if unable to use integrity protection, or SECINFO with | |
5912 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
5913 | * disallowed by spec, but exists in deployed servers) use | |
5914 | * the current filesystem's rpc_client and the user cred. | |
5915 | */ | |
5916 | if (err == -NFS4ERR_WRONGSEC) | |
5917 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
5918 | ||
078ea3df TM |
5919 | trace_nfs4_secinfo(dir, name, err); |
5920 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
5921 | &exception); |
5922 | } while (exception.retry); | |
5923 | return err; | |
5924 | } | |
5925 | ||
557134a3 | 5926 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5927 | /* |
5928 | * Check the exchange flags returned by the server for invalid flags, having | |
5929 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5930 | * DS flags set. | |
5931 | */ | |
5932 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5933 | { | |
5934 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5935 | goto out_inval; | |
5936 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5937 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5938 | goto out_inval; | |
5939 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5940 | goto out_inval; | |
5941 | return NFS_OK; | |
5942 | out_inval: | |
5943 | return -NFS4ERR_INVAL; | |
5944 | } | |
5945 | ||
78fe0f41 | 5946 | static bool |
79d4e1f0 CL |
5947 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5948 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5949 | { |
5950 | if (a->server_scope_sz == b->server_scope_sz && | |
5951 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5952 | return true; | |
5953 | ||
5954 | return false; | |
5955 | } | |
5956 | ||
7c44f1ae WAA |
5957 | /* |
5958 | * nfs4_proc_bind_conn_to_session() | |
5959 | * | |
5960 | * The 4.1 client currently uses the same TCP connection for the | |
5961 | * fore and backchannel. | |
5962 | */ | |
2cf047c9 | 5963 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5964 | { |
5965 | int status; | |
5966 | struct nfs41_bind_conn_to_session_res res; | |
5967 | struct rpc_message msg = { | |
5968 | .rpc_proc = | |
5969 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5970 | .rpc_argp = clp, | |
5971 | .rpc_resp = &res, | |
2cf047c9 | 5972 | .rpc_cred = cred, |
7c44f1ae WAA |
5973 | }; |
5974 | ||
5975 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5976 | |
5977 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5978 | if (unlikely(res.session == NULL)) { | |
5979 | status = -ENOMEM; | |
5980 | goto out; | |
5981 | } | |
5982 | ||
5983 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 5984 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
5985 | if (status == 0) { |
5986 | if (memcmp(res.session->sess_id.data, | |
5987 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5988 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5989 | status = -EIO; | |
5990 | goto out_session; | |
5991 | } | |
5992 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5993 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5994 | __func__); | |
5995 | status = -EIO; | |
5996 | goto out_session; | |
5997 | } | |
5998 | if (res.use_conn_in_rdma_mode) { | |
5999 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6000 | __func__); | |
6001 | status = -EIO; | |
6002 | goto out_session; | |
6003 | } | |
6004 | } | |
6005 | out_session: | |
6006 | kfree(res.session); | |
6007 | out: | |
6008 | dprintk("<-- %s status= %d\n", __func__, status); | |
6009 | return status; | |
6010 | } | |
6011 | ||
99fe60d0 BH |
6012 | /* |
6013 | * nfs4_proc_exchange_id() | |
6014 | * | |
6bbb4ae8 CL |
6015 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
6016 | * | |
99fe60d0 BH |
6017 | * Since the clientid has expired, all compounds using sessions |
6018 | * associated with the stale clientid will be returning | |
6019 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6020 | * be in some phase of session reset. | |
6021 | */ | |
4d643d1d | 6022 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
6023 | { |
6024 | nfs4_verifier verifier; | |
6025 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6026 | .verifier = &verifier, |
99fe60d0 | 6027 | .client = clp, |
4f0b429d TM |
6028 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
6029 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
6030 | }; |
6031 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6032 | 0 |
99fe60d0 BH |
6033 | }; |
6034 | int status; | |
6035 | struct rpc_message msg = { | |
6036 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6037 | .rpc_argp = &args, | |
6038 | .rpc_resp = &res, | |
6039 | .rpc_cred = cred, | |
6040 | }; | |
99fe60d0 | 6041 | |
f092075d | 6042 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6043 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6044 | sizeof(args.id)); | |
6bbb4ae8 CL |
6045 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6046 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6047 | args.id_len, args.id); | |
99fe60d0 | 6048 | |
acdeb69d | 6049 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6050 | GFP_NOFS); |
acdeb69d | 6051 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6052 | status = -ENOMEM; |
6053 | goto out; | |
6054 | } | |
78fe0f41 | 6055 | |
79d4e1f0 | 6056 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6057 | GFP_NOFS); |
177313f1 | 6058 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6059 | status = -ENOMEM; |
acdeb69d | 6060 | goto out_server_owner; |
abe9a6d5 | 6061 | } |
78fe0f41 | 6062 | |
bbafffd2 | 6063 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6064 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6065 | status = -ENOMEM; |
6066 | goto out_server_scope; | |
6067 | } | |
6068 | ||
1bd714f2 | 6069 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6070 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6071 | if (status == 0) |
32b01310 | 6072 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6073 | |
acdeb69d | 6074 | if (status == 0) { |
32b01310 TM |
6075 | clp->cl_clientid = res.clientid; |
6076 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6077 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6078 | clp->cl_seqid = res.seqid; | |
6079 | ||
acdeb69d CL |
6080 | kfree(clp->cl_serverowner); |
6081 | clp->cl_serverowner = res.server_owner; | |
6082 | res.server_owner = NULL; | |
78fe0f41 | 6083 | |
7d2ed9ac | 6084 | /* use the most recent implementation id */ |
59155546 CL |
6085 | kfree(clp->cl_implid); |
6086 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6087 | |
177313f1 | 6088 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6089 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6090 | res.server_scope)) { |
6091 | dprintk("%s: server_scope mismatch detected\n", | |
6092 | __func__); | |
6093 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6094 | kfree(clp->cl_serverscope); |
6095 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6096 | } |
6097 | ||
177313f1 | 6098 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6099 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6100 | goto out; |
6101 | } | |
32b01310 TM |
6102 | } else |
6103 | kfree(res.impl_id); | |
7d2ed9ac | 6104 | |
acdeb69d CL |
6105 | out_server_owner: |
6106 | kfree(res.server_owner); | |
7d2ed9ac | 6107 | out_server_scope: |
abe9a6d5 WAA |
6108 | kfree(res.server_scope); |
6109 | out: | |
177313f1 | 6110 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6111 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6112 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6113 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6114 | clp->cl_implid->date.seconds, |
6115 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6116 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6117 | return status; |
6118 | } | |
6119 | ||
66245539 TM |
6120 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6121 | struct rpc_cred *cred) | |
6122 | { | |
6123 | struct rpc_message msg = { | |
6124 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6125 | .rpc_argp = clp, | |
6126 | .rpc_cred = cred, | |
6127 | }; | |
6128 | int status; | |
6129 | ||
6130 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6131 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6132 | if (status) |
02c67525 | 6133 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6134 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6135 | return status; | |
6136 | } | |
6137 | ||
6138 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6139 | struct rpc_cred *cred) | |
6140 | { | |
6141 | unsigned int loop; | |
6142 | int ret; | |
6143 | ||
6144 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6145 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6146 | switch (ret) { | |
6147 | case -NFS4ERR_DELAY: | |
6148 | case -NFS4ERR_CLIENTID_BUSY: | |
6149 | ssleep(1); | |
6150 | break; | |
6151 | default: | |
6152 | return ret; | |
6153 | } | |
6154 | } | |
6155 | return 0; | |
6156 | } | |
6157 | ||
6158 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6159 | { | |
6160 | struct rpc_cred *cred; | |
6161 | int ret = 0; | |
6162 | ||
6163 | if (clp->cl_mvops->minor_version < 1) | |
6164 | goto out; | |
6165 | if (clp->cl_exchange_flags == 0) | |
6166 | goto out; | |
05f4c350 CL |
6167 | if (clp->cl_preserve_clid) |
6168 | goto out; | |
73d8bde5 | 6169 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6170 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6171 | if (cred) | |
6172 | put_rpccred(cred); | |
6173 | switch (ret) { | |
6174 | case 0: | |
6175 | case -NFS4ERR_STALE_CLIENTID: | |
6176 | clp->cl_exchange_flags = 0; | |
6177 | } | |
6178 | out: | |
6179 | return ret; | |
6180 | } | |
6181 | ||
2050f0cc AA |
6182 | struct nfs4_get_lease_time_data { |
6183 | struct nfs4_get_lease_time_args *args; | |
6184 | struct nfs4_get_lease_time_res *res; | |
6185 | struct nfs_client *clp; | |
6186 | }; | |
6187 | ||
6188 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6189 | void *calldata) | |
6190 | { | |
2050f0cc AA |
6191 | struct nfs4_get_lease_time_data *data = |
6192 | (struct nfs4_get_lease_time_data *)calldata; | |
6193 | ||
6194 | dprintk("--> %s\n", __func__); | |
6195 | /* just setup sequence, do not trigger session recovery | |
6196 | since we're invoked within one */ | |
d9afbd1b TM |
6197 | nfs41_setup_sequence(data->clp->cl_session, |
6198 | &data->args->la_seq_args, | |
6199 | &data->res->lr_seq_res, | |
6200 | task); | |
2050f0cc AA |
6201 | dprintk("<-- %s\n", __func__); |
6202 | } | |
6203 | ||
6204 | /* | |
6205 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6206 | * from sequence operation or clientid errors. | |
6207 | */ | |
6208 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6209 | { | |
6210 | struct nfs4_get_lease_time_data *data = | |
6211 | (struct nfs4_get_lease_time_data *)calldata; | |
6212 | ||
6213 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6214 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6215 | return; | |
2050f0cc AA |
6216 | switch (task->tk_status) { |
6217 | case -NFS4ERR_DELAY: | |
6218 | case -NFS4ERR_GRACE: | |
6219 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6220 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6221 | task->tk_status = 0; | |
a8a4ae3a AA |
6222 | /* fall through */ |
6223 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6224 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6225 | return; |
6226 | } | |
2050f0cc AA |
6227 | dprintk("<-- %s\n", __func__); |
6228 | } | |
6229 | ||
17280175 | 6230 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6231 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6232 | .rpc_call_done = nfs4_get_lease_time_done, | |
6233 | }; | |
6234 | ||
6235 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6236 | { | |
6237 | struct rpc_task *task; | |
6238 | struct nfs4_get_lease_time_args args; | |
6239 | struct nfs4_get_lease_time_res res = { | |
6240 | .lr_fsinfo = fsinfo, | |
6241 | }; | |
6242 | struct nfs4_get_lease_time_data data = { | |
6243 | .args = &args, | |
6244 | .res = &res, | |
6245 | .clp = clp, | |
6246 | }; | |
6247 | struct rpc_message msg = { | |
6248 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6249 | .rpc_argp = &args, | |
6250 | .rpc_resp = &res, | |
6251 | }; | |
6252 | struct rpc_task_setup task_setup = { | |
6253 | .rpc_client = clp->cl_rpcclient, | |
6254 | .rpc_message = &msg, | |
6255 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6256 | .callback_data = &data, |
6257 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6258 | }; |
6259 | int status; | |
6260 | ||
9d12b216 | 6261 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6262 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6263 | dprintk("--> %s\n", __func__); |
6264 | task = rpc_run_task(&task_setup); | |
6265 | ||
6266 | if (IS_ERR(task)) | |
6267 | status = PTR_ERR(task); | |
6268 | else { | |
6269 | status = task->tk_status; | |
6270 | rpc_put_task(task); | |
6271 | } | |
6272 | dprintk("<-- %s return %d\n", __func__, status); | |
6273 | ||
6274 | return status; | |
6275 | } | |
6276 | ||
fc931582 AA |
6277 | /* |
6278 | * Initialize the values to be used by the client in CREATE_SESSION | |
6279 | * If nfs4_init_session set the fore channel request and response sizes, | |
6280 | * use them. | |
6281 | * | |
6282 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6283 | * always set csa_cachethis to FALSE because the current implementation | |
6284 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6285 | */ | |
6286 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6287 | { | |
18aad3d5 AA |
6288 | unsigned int max_rqst_sz, max_resp_sz; |
6289 | ||
6290 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6291 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6292 | |
fc931582 | 6293 | /* Fore channel attributes */ |
18aad3d5 AA |
6294 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6295 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6296 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6297 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6298 | |
6299 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6300 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6301 | __func__, |
6302 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6303 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6304 | |
6305 | /* Back channel attributes */ | |
fc931582 AA |
6306 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6307 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6308 | args->bc_attrs.max_resp_sz_cached = 0; | |
6309 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6310 | args->bc_attrs.max_reqs = 1; | |
6311 | ||
6312 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6313 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6314 | __func__, | |
6315 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6316 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6317 | args->bc_attrs.max_reqs); | |
6318 | } | |
6319 | ||
43c2e885 | 6320 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6321 | { |
43c2e885 BF |
6322 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6323 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6324 | ||
43c2e885 BF |
6325 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6326 | return -EINVAL; | |
6327 | /* | |
6328 | * Our requested max_ops is the minimum we need; we're not | |
6329 | * prepared to break up compounds into smaller pieces than that. | |
6330 | * So, no point even trying to continue if the server won't | |
6331 | * cooperate: | |
6332 | */ | |
6333 | if (rcvd->max_ops < sent->max_ops) | |
6334 | return -EINVAL; | |
6335 | if (rcvd->max_reqs == 0) | |
6336 | return -EINVAL; | |
b4b9a0c1 VG |
6337 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6338 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 6339 | return 0; |
8d35301d AA |
6340 | } |
6341 | ||
43c2e885 BF |
6342 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
6343 | { | |
6344 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
6345 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 6346 | |
43c2e885 BF |
6347 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
6348 | return -EINVAL; | |
6349 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
6350 | return -EINVAL; | |
6351 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
6352 | return -EINVAL; | |
6353 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 6354 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 6355 | return -EINVAL; |
b4b9a0c1 | 6356 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
6357 | return -EINVAL; |
6358 | return 0; | |
6359 | } | |
8d35301d | 6360 | |
8d35301d AA |
6361 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6362 | struct nfs4_session *session) | |
6363 | { | |
43c2e885 | 6364 | int ret; |
8d35301d | 6365 | |
43c2e885 BF |
6366 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6367 | if (ret) | |
6368 | return ret; | |
6369 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6370 | } |
6371 | ||
848f5bda TM |
6372 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6373 | struct rpc_cred *cred) | |
fc931582 AA |
6374 | { |
6375 | struct nfs4_session *session = clp->cl_session; | |
6376 | struct nfs41_create_session_args args = { | |
6377 | .client = clp, | |
6378 | .cb_program = NFS4_CALLBACK, | |
6379 | }; | |
6380 | struct nfs41_create_session_res res = { | |
6381 | .client = clp, | |
6382 | }; | |
6383 | struct rpc_message msg = { | |
6384 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6385 | .rpc_argp = &args, | |
6386 | .rpc_resp = &res, | |
848f5bda | 6387 | .rpc_cred = cred, |
fc931582 AA |
6388 | }; |
6389 | int status; | |
6390 | ||
6391 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6392 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6393 | |
1bd714f2 | 6394 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6395 | trace_nfs4_create_session(clp, status); |
fc931582 | 6396 | |
43095d39 | 6397 | if (!status) { |
8d35301d AA |
6398 | /* Verify the session's negotiated channel_attrs values */ |
6399 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6400 | /* Increment the clientid slot sequence id */ |
6401 | clp->cl_seqid++; | |
6402 | } | |
6403 | ||
6404 | return status; | |
6405 | } | |
6406 | ||
6407 | /* | |
6408 | * Issues a CREATE_SESSION operation to the server. | |
6409 | * It is the responsibility of the caller to verify the session is | |
6410 | * expired before calling this routine. | |
6411 | */ | |
848f5bda | 6412 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6413 | { |
6414 | int status; | |
6415 | unsigned *ptr; | |
fc931582 AA |
6416 | struct nfs4_session *session = clp->cl_session; |
6417 | ||
6418 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6419 | ||
848f5bda | 6420 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6421 | if (status) |
6422 | goto out; | |
6423 | ||
aacd5537 AA |
6424 | /* Init or reset the session slot tables */ |
6425 | status = nfs4_setup_session_slot_tables(session); | |
6426 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6427 | if (status) |
6428 | goto out; | |
6429 | ||
6430 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6431 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6432 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6433 | out: |
6434 | dprintk("<-- %s\n", __func__); | |
6435 | return status; | |
6436 | } | |
6437 | ||
0f3e66c6 AA |
6438 | /* |
6439 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6440 | * The caller must serialize access to this routine. | |
6441 | */ | |
848f5bda TM |
6442 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6443 | struct rpc_cred *cred) | |
0f3e66c6 | 6444 | { |
848f5bda TM |
6445 | struct rpc_message msg = { |
6446 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6447 | .rpc_argp = session, | |
6448 | .rpc_cred = cred, | |
6449 | }; | |
0f3e66c6 | 6450 | int status = 0; |
0f3e66c6 AA |
6451 | |
6452 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6453 | ||
6454 | /* session is still being setup */ | |
6455 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6456 | return status; | |
6457 | ||
1bd714f2 | 6458 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6459 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
6460 | |
6461 | if (status) | |
08106ac7 | 6462 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6463 | "Session has been destroyed regardless...\n", status); |
6464 | ||
6465 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6466 | return status; | |
6467 | } | |
6468 | ||
fc01cea9 AA |
6469 | /* |
6470 | * Renew the cl_session lease. | |
6471 | */ | |
d5f8d3fe TM |
6472 | struct nfs4_sequence_data { |
6473 | struct nfs_client *clp; | |
6474 | struct nfs4_sequence_args args; | |
6475 | struct nfs4_sequence_res res; | |
6476 | }; | |
6477 | ||
dc96aef9 AB |
6478 | static void nfs41_sequence_release(void *data) |
6479 | { | |
d5f8d3fe TM |
6480 | struct nfs4_sequence_data *calldata = data; |
6481 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6482 | |
7135840f AB |
6483 | if (atomic_read(&clp->cl_count) > 1) |
6484 | nfs4_schedule_state_renewal(clp); | |
6485 | nfs_put_client(clp); | |
d5f8d3fe | 6486 | kfree(calldata); |
dc96aef9 AB |
6487 | } |
6488 | ||
aa5190d0 TM |
6489 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6490 | { | |
6491 | switch(task->tk_status) { | |
6492 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6493 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6494 | return -EAGAIN; | |
6495 | default: | |
0400a6b0 | 6496 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6497 | } |
6498 | return 0; | |
6499 | } | |
6500 | ||
dc96aef9 | 6501 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6502 | { |
d5f8d3fe TM |
6503 | struct nfs4_sequence_data *calldata = data; |
6504 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6505 | |
14516c3a TM |
6506 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6507 | return; | |
fc01cea9 | 6508 | |
c6d01c6f | 6509 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
6510 | if (task->tk_status < 0) { |
6511 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6512 | if (atomic_read(&clp->cl_count) == 1) |
6513 | goto out; | |
fc01cea9 | 6514 | |
aa5190d0 TM |
6515 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6516 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6517 | return; |
6518 | } | |
6519 | } | |
fc01cea9 | 6520 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6521 | out: |
fc01cea9 AA |
6522 | dprintk("<-- %s\n", __func__); |
6523 | } | |
6524 | ||
6525 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6526 | { | |
d5f8d3fe TM |
6527 | struct nfs4_sequence_data *calldata = data; |
6528 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6529 | struct nfs4_sequence_args *args; |
6530 | struct nfs4_sequence_res *res; | |
6531 | ||
fc01cea9 AA |
6532 | args = task->tk_msg.rpc_argp; |
6533 | res = task->tk_msg.rpc_resp; | |
6534 | ||
d9afbd1b | 6535 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6536 | } |
6537 | ||
6538 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6539 | .rpc_call_done = nfs41_sequence_call_done, | |
6540 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6541 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6542 | }; |
6543 | ||
8fe72bac TM |
6544 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6545 | struct rpc_cred *cred, | |
6546 | bool is_privileged) | |
fc01cea9 | 6547 | { |
d5f8d3fe | 6548 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6549 | struct rpc_message msg = { |
6550 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6551 | .rpc_cred = cred, | |
6552 | }; | |
71ac6da9 TM |
6553 | struct rpc_task_setup task_setup_data = { |
6554 | .rpc_client = clp->cl_rpcclient, | |
6555 | .rpc_message = &msg, | |
8fe72bac | 6556 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6557 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6558 | }; |
fc01cea9 | 6559 | |
7135840f | 6560 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6561 | return ERR_PTR(-EIO); |
dfb4f309 | 6562 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6563 | if (calldata == NULL) { |
7135840f | 6564 | nfs_put_client(clp); |
71ac6da9 | 6565 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6566 | } |
9d12b216 | 6567 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6568 | if (is_privileged) |
6569 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6570 | msg.rpc_argp = &calldata->args; |
6571 | msg.rpc_resp = &calldata->res; | |
6572 | calldata->clp = clp; | |
71ac6da9 | 6573 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6574 | |
71ac6da9 TM |
6575 | return rpc_run_task(&task_setup_data); |
6576 | } | |
6577 | ||
2f60ea6b | 6578 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6579 | { |
6580 | struct rpc_task *task; | |
6581 | int ret = 0; | |
6582 | ||
2f60ea6b TM |
6583 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6584 | return 0; | |
8fe72bac | 6585 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6586 | if (IS_ERR(task)) |
6587 | ret = PTR_ERR(task); | |
6588 | else | |
bf294b41 | 6589 | rpc_put_task_async(task); |
71ac6da9 TM |
6590 | dprintk("<-- %s status=%d\n", __func__, ret); |
6591 | return ret; | |
6592 | } | |
6593 | ||
6594 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6595 | { | |
6596 | struct rpc_task *task; | |
6597 | int ret; | |
6598 | ||
8fe72bac | 6599 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6600 | if (IS_ERR(task)) { |
6601 | ret = PTR_ERR(task); | |
6602 | goto out; | |
6603 | } | |
6604 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6605 | if (!ret) { |
6606 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6607 | ||
6608 | if (task->tk_status == 0) | |
6609 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6610 | ret = task->tk_status; |
b4410c2f | 6611 | } |
71ac6da9 TM |
6612 | rpc_put_task(task); |
6613 | out: | |
6614 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6615 | return ret; | |
fc01cea9 AA |
6616 | } |
6617 | ||
fce5c838 RL |
6618 | struct nfs4_reclaim_complete_data { |
6619 | struct nfs_client *clp; | |
6620 | struct nfs41_reclaim_complete_args arg; | |
6621 | struct nfs41_reclaim_complete_res res; | |
6622 | }; | |
6623 | ||
6624 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6625 | { | |
6626 | struct nfs4_reclaim_complete_data *calldata = data; | |
6627 | ||
d9afbd1b TM |
6628 | nfs41_setup_sequence(calldata->clp->cl_session, |
6629 | &calldata->arg.seq_args, | |
6630 | &calldata->res.seq_res, | |
6631 | task); | |
fce5c838 RL |
6632 | } |
6633 | ||
aa5190d0 TM |
6634 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6635 | { | |
6636 | switch(task->tk_status) { | |
6637 | case 0: | |
6638 | case -NFS4ERR_COMPLETE_ALREADY: | |
6639 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6640 | break; | |
6641 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6642 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6643 | /* fall through */ |
6644 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6645 | return -EAGAIN; |
6646 | default: | |
0400a6b0 | 6647 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6648 | } |
6649 | return 0; | |
6650 | } | |
6651 | ||
fce5c838 RL |
6652 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6653 | { | |
6654 | struct nfs4_reclaim_complete_data *calldata = data; | |
6655 | struct nfs_client *clp = calldata->clp; | |
6656 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6657 | ||
6658 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6659 | if (!nfs41_sequence_done(task, res)) |
6660 | return; | |
fce5c838 | 6661 | |
c6d01c6f | 6662 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
6663 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6664 | rpc_restart_call_prepare(task); | |
6665 | return; | |
6666 | } | |
fce5c838 RL |
6667 | dprintk("<-- %s\n", __func__); |
6668 | } | |
6669 | ||
6670 | static void nfs4_free_reclaim_complete_data(void *data) | |
6671 | { | |
6672 | struct nfs4_reclaim_complete_data *calldata = data; | |
6673 | ||
6674 | kfree(calldata); | |
6675 | } | |
6676 | ||
6677 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6678 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6679 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6680 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6681 | }; | |
6682 | ||
6683 | /* | |
6684 | * Issue a global reclaim complete. | |
6685 | */ | |
965e9c23 TM |
6686 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6687 | struct rpc_cred *cred) | |
fce5c838 RL |
6688 | { |
6689 | struct nfs4_reclaim_complete_data *calldata; | |
6690 | struct rpc_task *task; | |
6691 | struct rpc_message msg = { | |
6692 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6693 | .rpc_cred = cred, |
fce5c838 RL |
6694 | }; |
6695 | struct rpc_task_setup task_setup_data = { | |
6696 | .rpc_client = clp->cl_rpcclient, | |
6697 | .rpc_message = &msg, | |
6698 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6699 | .flags = RPC_TASK_ASYNC, | |
6700 | }; | |
6701 | int status = -ENOMEM; | |
6702 | ||
6703 | dprintk("--> %s\n", __func__); | |
8535b2be | 6704 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6705 | if (calldata == NULL) |
6706 | goto out; | |
6707 | calldata->clp = clp; | |
6708 | calldata->arg.one_fs = 0; | |
fce5c838 | 6709 | |
9d12b216 | 6710 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6711 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6712 | msg.rpc_argp = &calldata->arg; |
6713 | msg.rpc_resp = &calldata->res; | |
6714 | task_setup_data.callback_data = calldata; | |
6715 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6716 | if (IS_ERR(task)) { |
fce5c838 | 6717 | status = PTR_ERR(task); |
acf82b85 DC |
6718 | goto out; |
6719 | } | |
c34c32ea AA |
6720 | status = nfs4_wait_for_completion_rpc_task(task); |
6721 | if (status == 0) | |
6722 | status = task->tk_status; | |
fce5c838 | 6723 | rpc_put_task(task); |
acf82b85 | 6724 | return 0; |
fce5c838 RL |
6725 | out: |
6726 | dprintk("<-- %s status=%d\n", __func__, status); | |
6727 | return status; | |
6728 | } | |
b1f69b75 AA |
6729 | |
6730 | static void | |
6731 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6732 | { | |
6733 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6734 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6735 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6736 | |
6737 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6738 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6739 | * right now covering the LAYOUTGET we are about to send. | |
6740 | * However, that is not so catastrophic, and there seems | |
6741 | * to be no way to prevent it completely. | |
6742 | */ | |
6ba7db34 | 6743 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6744 | &lgp->res.seq_res, task)) |
b1f69b75 | 6745 | return; |
cf7d63f1 FI |
6746 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6747 | NFS_I(lgp->args.inode)->layout, | |
6748 | lgp->args.ctx->state)) { | |
6749 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6750 | } |
b1f69b75 AA |
6751 | } |
6752 | ||
6753 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6754 | { | |
6755 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6756 | struct inode *inode = lgp->args.inode; |
6757 | struct nfs_server *server = NFS_SERVER(inode); | |
6758 | struct pnfs_layout_hdr *lo; | |
6759 | struct nfs4_state *state = NULL; | |
30005121 | 6760 | unsigned long timeo, giveup; |
b1f69b75 AA |
6761 | |
6762 | dprintk("--> %s\n", __func__); | |
6763 | ||
6ba7db34 | 6764 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6765 | goto out; |
b1f69b75 AA |
6766 | |
6767 | switch (task->tk_status) { | |
6768 | case 0: | |
ee314c2a | 6769 | goto out; |
b1f69b75 AA |
6770 | case -NFS4ERR_LAYOUTTRYLATER: |
6771 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6772 | timeo = rpc_get_timeout(task->tk_client); |
6773 | giveup = lgp->args.timestamp + timeo; | |
6774 | if (time_after(giveup, jiffies)) | |
6775 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6776 | break; |
6777 | case -NFS4ERR_EXPIRED: | |
6778 | case -NFS4ERR_BAD_STATEID: | |
6779 | spin_lock(&inode->i_lock); | |
6780 | lo = NFS_I(inode)->layout; | |
6781 | if (!lo || list_empty(&lo->plh_segs)) { | |
6782 | spin_unlock(&inode->i_lock); | |
6783 | /* If the open stateid was bad, then recover it. */ | |
6784 | state = lgp->args.ctx->state; | |
6785 | } else { | |
6786 | LIST_HEAD(head); | |
6787 | ||
6788 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6789 | spin_unlock(&inode->i_lock); | |
6790 | /* Mark the bad layout state as invalid, then | |
6791 | * retry using the open stateid. */ | |
6792 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6793 | } |
6794 | } | |
ee314c2a TM |
6795 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6796 | rpc_restart_call_prepare(task); | |
6797 | out: | |
b1f69b75 AA |
6798 | dprintk("<-- %s\n", __func__); |
6799 | } | |
6800 | ||
8554116e IK |
6801 | static size_t max_response_pages(struct nfs_server *server) |
6802 | { | |
6803 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6804 | return nfs_page_array_len(0, max_resp_sz); | |
6805 | } | |
6806 | ||
6807 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6808 | { | |
6809 | int i; | |
6810 | ||
6811 | if (!pages) | |
6812 | return; | |
6813 | ||
6814 | for (i = 0; i < size; i++) { | |
6815 | if (!pages[i]) | |
6816 | break; | |
6817 | __free_page(pages[i]); | |
6818 | } | |
6819 | kfree(pages); | |
6820 | } | |
6821 | ||
6822 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6823 | { | |
6824 | struct page **pages; | |
6825 | int i; | |
6826 | ||
6827 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6828 | if (!pages) { | |
6829 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6830 | return NULL; | |
6831 | } | |
6832 | ||
6833 | for (i = 0; i < size; i++) { | |
6834 | pages[i] = alloc_page(gfp_flags); | |
6835 | if (!pages[i]) { | |
6836 | dprintk("%s: failed to allocate page\n", __func__); | |
6837 | nfs4_free_pages(pages, size); | |
6838 | return NULL; | |
6839 | } | |
6840 | } | |
6841 | ||
6842 | return pages; | |
6843 | } | |
6844 | ||
b1f69b75 AA |
6845 | static void nfs4_layoutget_release(void *calldata) |
6846 | { | |
6847 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6848 | struct inode *inode = lgp->args.inode; |
6849 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6850 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6851 | |
6852 | dprintk("--> %s\n", __func__); | |
8554116e | 6853 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6854 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6855 | put_nfs_open_context(lgp->args.ctx); |
6856 | kfree(calldata); | |
6857 | dprintk("<-- %s\n", __func__); | |
6858 | } | |
6859 | ||
6860 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6861 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6862 | .rpc_call_done = nfs4_layoutget_done, | |
6863 | .rpc_release = nfs4_layoutget_release, | |
6864 | }; | |
6865 | ||
a0b0a6e3 TM |
6866 | struct pnfs_layout_segment * |
6867 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6868 | { |
a47970ff WAA |
6869 | struct inode *inode = lgp->args.inode; |
6870 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6871 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6872 | struct rpc_task *task; |
6873 | struct rpc_message msg = { | |
6874 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6875 | .rpc_argp = &lgp->args, | |
6876 | .rpc_resp = &lgp->res, | |
6ab59344 | 6877 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
6878 | }; |
6879 | struct rpc_task_setup task_setup_data = { | |
6880 | .rpc_client = server->client, | |
6881 | .rpc_message = &msg, | |
6882 | .callback_ops = &nfs4_layoutget_call_ops, | |
6883 | .callback_data = lgp, | |
6884 | .flags = RPC_TASK_ASYNC, | |
6885 | }; | |
a0b0a6e3 | 6886 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6887 | int status = 0; |
6888 | ||
6889 | dprintk("--> %s\n", __func__); | |
6890 | ||
8554116e IK |
6891 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6892 | if (!lgp->args.layout.pages) { | |
6893 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6894 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6895 | } |
6896 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6897 | lgp->args.timestamp = jiffies; |
8554116e | 6898 | |
35124a09 | 6899 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6900 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6901 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6902 | |
6903 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6904 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6905 | ||
b1f69b75 AA |
6906 | task = rpc_run_task(&task_setup_data); |
6907 | if (IS_ERR(task)) | |
a0b0a6e3 | 6908 | return ERR_CAST(task); |
b1f69b75 | 6909 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6910 | if (status == 0) |
6911 | status = task->tk_status; | |
1037e6ea TM |
6912 | trace_nfs4_layoutget(lgp->args.ctx, |
6913 | &lgp->args.range, | |
6914 | &lgp->res.range, | |
6915 | status); | |
085b7a45 WAA |
6916 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6917 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6918 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6919 | rpc_put_task(task); |
6920 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6921 | if (status) |
6922 | return ERR_PTR(status); | |
6923 | return lseg; | |
b1f69b75 AA |
6924 | } |
6925 | ||
cbe82603 BH |
6926 | static void |
6927 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6928 | { | |
6929 | struct nfs4_layoutreturn *lrp = calldata; | |
6930 | ||
6931 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6932 | nfs41_setup_sequence(lrp->clp->cl_session, |
6933 | &lrp->args.seq_args, | |
6934 | &lrp->res.seq_res, | |
6935 | task); | |
cbe82603 BH |
6936 | } |
6937 | ||
6938 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6939 | { | |
6940 | struct nfs4_layoutreturn *lrp = calldata; | |
6941 | struct nfs_server *server; | |
6942 | ||
6943 | dprintk("--> %s\n", __func__); | |
6944 | ||
6ba7db34 | 6945 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6946 | return; |
6947 | ||
6948 | server = NFS_SERVER(lrp->args.inode); | |
6949 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6950 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6951 | return; |
6952 | } | |
cbe82603 BH |
6953 | dprintk("<-- %s\n", __func__); |
6954 | } | |
6955 | ||
6956 | static void nfs4_layoutreturn_release(void *calldata) | |
6957 | { | |
6958 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6959 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6960 | |
6961 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6962 | spin_lock(&lo->plh_inode->i_lock); |
6963 | if (lrp->res.lrs_present) | |
6964 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6965 | lo->plh_block_lgets--; | |
6966 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6967 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6968 | kfree(calldata); |
6969 | dprintk("<-- %s\n", __func__); | |
6970 | } | |
6971 | ||
6972 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6973 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6974 | .rpc_call_done = nfs4_layoutreturn_done, | |
6975 | .rpc_release = nfs4_layoutreturn_release, | |
6976 | }; | |
6977 | ||
6978 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6979 | { | |
6980 | struct rpc_task *task; | |
6981 | struct rpc_message msg = { | |
6982 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6983 | .rpc_argp = &lrp->args, | |
6984 | .rpc_resp = &lrp->res, | |
9556000d | 6985 | .rpc_cred = lrp->cred, |
cbe82603 BH |
6986 | }; |
6987 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 6988 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
6989 | .rpc_message = &msg, |
6990 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6991 | .callback_data = lrp, | |
6992 | }; | |
6993 | int status; | |
6994 | ||
6995 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6996 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6997 | task = rpc_run_task(&task_setup_data); |
6998 | if (IS_ERR(task)) | |
6999 | return PTR_ERR(task); | |
7000 | status = task->tk_status; | |
1037e6ea | 7001 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7002 | dprintk("<-- %s status=%d\n", __func__, status); |
7003 | rpc_put_task(task); | |
7004 | return status; | |
7005 | } | |
7006 | ||
7f11d8d3 AA |
7007 | /* |
7008 | * Retrieve the list of Data Server devices from the MDS. | |
7009 | */ | |
7010 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
7011 | const struct nfs_fh *fh, | |
7012 | struct pnfs_devicelist *devlist) | |
7013 | { | |
7014 | struct nfs4_getdevicelist_args args = { | |
7015 | .fh = fh, | |
7016 | .layoutclass = server->pnfs_curr_ld->id, | |
7017 | }; | |
7018 | struct nfs4_getdevicelist_res res = { | |
7019 | .devlist = devlist, | |
7020 | }; | |
7021 | struct rpc_message msg = { | |
7022 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
7023 | .rpc_argp = &args, | |
7024 | .rpc_resp = &res, | |
7025 | }; | |
7026 | int status; | |
7027 | ||
7028 | dprintk("--> %s\n", __func__); | |
7029 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
7030 | &res.seq_res, 0); | |
7031 | dprintk("<-- %s status=%d\n", __func__, status); | |
7032 | return status; | |
7033 | } | |
7034 | ||
7035 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
7036 | const struct nfs_fh *fh, | |
7037 | struct pnfs_devicelist *devlist) | |
7038 | { | |
7039 | struct nfs4_exception exception = { }; | |
7040 | int err; | |
7041 | ||
7042 | do { | |
7043 | err = nfs4_handle_exception(server, | |
7044 | _nfs4_getdevicelist(server, fh, devlist), | |
7045 | &exception); | |
7046 | } while (exception.retry); | |
7047 | ||
7048 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
7049 | err, devlist->num_devs); | |
7050 | ||
7051 | return err; | |
7052 | } | |
7053 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
7054 | ||
b1f69b75 | 7055 | static int |
cd5875fe TM |
7056 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7057 | struct pnfs_device *pdev, | |
7058 | struct rpc_cred *cred) | |
b1f69b75 AA |
7059 | { |
7060 | struct nfs4_getdeviceinfo_args args = { | |
7061 | .pdev = pdev, | |
7062 | }; | |
7063 | struct nfs4_getdeviceinfo_res res = { | |
7064 | .pdev = pdev, | |
7065 | }; | |
7066 | struct rpc_message msg = { | |
7067 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7068 | .rpc_argp = &args, | |
7069 | .rpc_resp = &res, | |
cd5875fe | 7070 | .rpc_cred = cred, |
b1f69b75 AA |
7071 | }; |
7072 | int status; | |
7073 | ||
7074 | dprintk("--> %s\n", __func__); | |
7c513058 | 7075 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7076 | dprintk("<-- %s status=%d\n", __func__, status); |
7077 | ||
7078 | return status; | |
7079 | } | |
7080 | ||
cd5875fe TM |
7081 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7082 | struct pnfs_device *pdev, | |
7083 | struct rpc_cred *cred) | |
b1f69b75 AA |
7084 | { |
7085 | struct nfs4_exception exception = { }; | |
7086 | int err; | |
7087 | ||
7088 | do { | |
7089 | err = nfs4_handle_exception(server, | |
cd5875fe | 7090 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7091 | &exception); |
7092 | } while (exception.retry); | |
7093 | return err; | |
7094 | } | |
7095 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7096 | ||
863a3c6c AA |
7097 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7098 | { | |
7099 | struct nfs4_layoutcommit_data *data = calldata; | |
7100 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7101 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7102 | |
d9afbd1b TM |
7103 | nfs41_setup_sequence(session, |
7104 | &data->args.seq_args, | |
7105 | &data->res.seq_res, | |
7106 | task); | |
863a3c6c AA |
7107 | } |
7108 | ||
7109 | static void | |
7110 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7111 | { | |
7112 | struct nfs4_layoutcommit_data *data = calldata; | |
7113 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7114 | ||
6ba7db34 | 7115 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7116 | return; |
7117 | ||
7118 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7119 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7120 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7121 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7122 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7123 | task->tk_status = 0; |
e59d27e0 TM |
7124 | break; |
7125 | case 0: | |
863a3c6c AA |
7126 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7127 | data->res.fattr); | |
e59d27e0 TM |
7128 | break; |
7129 | default: | |
7130 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7131 | rpc_restart_call_prepare(task); | |
7132 | return; | |
7133 | } | |
7134 | } | |
863a3c6c AA |
7135 | } |
7136 | ||
7137 | static void nfs4_layoutcommit_release(void *calldata) | |
7138 | { | |
7139 | struct nfs4_layoutcommit_data *data = calldata; | |
7140 | ||
db29c089 | 7141 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
7142 | put_rpccred(data->cred); |
7143 | kfree(data); | |
7144 | } | |
7145 | ||
7146 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7147 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7148 | .rpc_call_done = nfs4_layoutcommit_done, | |
7149 | .rpc_release = nfs4_layoutcommit_release, | |
7150 | }; | |
7151 | ||
7152 | int | |
ef311537 | 7153 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7154 | { |
7155 | struct rpc_message msg = { | |
7156 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7157 | .rpc_argp = &data->args, | |
7158 | .rpc_resp = &data->res, | |
7159 | .rpc_cred = data->cred, | |
7160 | }; | |
7161 | struct rpc_task_setup task_setup_data = { | |
7162 | .task = &data->task, | |
7163 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7164 | .rpc_message = &msg, | |
7165 | .callback_ops = &nfs4_layoutcommit_ops, | |
7166 | .callback_data = data, | |
7167 | .flags = RPC_TASK_ASYNC, | |
7168 | }; | |
7169 | struct rpc_task *task; | |
7170 | int status = 0; | |
7171 | ||
7172 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7173 | "lbw: %llu inode %lu\n", | |
7174 | data->task.tk_pid, sync, | |
7175 | data->args.lastbytewritten, | |
7176 | data->args.inode->i_ino); | |
7177 | ||
9d12b216 | 7178 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7179 | task = rpc_run_task(&task_setup_data); |
7180 | if (IS_ERR(task)) | |
7181 | return PTR_ERR(task); | |
ef311537 | 7182 | if (sync == false) |
863a3c6c AA |
7183 | goto out; |
7184 | status = nfs4_wait_for_completion_rpc_task(task); | |
7185 | if (status != 0) | |
7186 | goto out; | |
7187 | status = task->tk_status; | |
1037e6ea | 7188 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7189 | out: |
7190 | dprintk("%s: status %d\n", __func__, status); | |
7191 | rpc_put_task(task); | |
7192 | return status; | |
7193 | } | |
fca78d6d | 7194 | |
97431204 AA |
7195 | /** |
7196 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7197 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7198 | */ | |
fca78d6d BS |
7199 | static int |
7200 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7201 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7202 | { | |
7203 | struct nfs41_secinfo_no_name_args args = { | |
7204 | .style = SECINFO_STYLE_CURRENT_FH, | |
7205 | }; | |
7206 | struct nfs4_secinfo_res res = { | |
7207 | .flavors = flavors, | |
7208 | }; | |
7209 | struct rpc_message msg = { | |
7210 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7211 | .rpc_argp = &args, | |
7212 | .rpc_resp = &res, | |
7213 | }; | |
97431204 AA |
7214 | return nfs4_call_sync(server->nfs_client->cl_rpcclient, server, &msg, |
7215 | &args.seq_args, &res.seq_res, 0); | |
fca78d6d BS |
7216 | } |
7217 | ||
7218 | static int | |
7219 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7220 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7221 | { | |
7222 | struct nfs4_exception exception = { }; | |
7223 | int err; | |
7224 | do { | |
7225 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7226 | switch (err) { | |
7227 | case 0: | |
7228 | case -NFS4ERR_WRONGSEC: | |
7229 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 7230 | goto out; |
fca78d6d BS |
7231 | default: |
7232 | err = nfs4_handle_exception(server, err, &exception); | |
7233 | } | |
7234 | } while (exception.retry); | |
05e9cfb4 | 7235 | out: |
fca78d6d BS |
7236 | return err; |
7237 | } | |
7238 | ||
7239 | static int | |
7240 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7241 | struct nfs_fsinfo *info) | |
7242 | { | |
7243 | int err; | |
7244 | struct page *page; | |
7245 | rpc_authflavor_t flavor; | |
7246 | struct nfs4_secinfo_flavors *flavors; | |
7247 | ||
7248 | page = alloc_page(GFP_KERNEL); | |
7249 | if (!page) { | |
7250 | err = -ENOMEM; | |
7251 | goto out; | |
7252 | } | |
7253 | ||
7254 | flavors = page_address(page); | |
7255 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7256 | ||
7257 | /* | |
7258 | * Fall back on "guess and check" method if | |
7259 | * the server doesn't support SECINFO_NO_NAME | |
7260 | */ | |
7261 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
7262 | err = nfs4_find_root_sec(server, fhandle, info); | |
7263 | goto out_freepage; | |
7264 | } | |
7265 | if (err) | |
7266 | goto out_freepage; | |
7267 | ||
7268 | flavor = nfs_find_best_sec(flavors); | |
7269 | if (err == 0) | |
7270 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
7271 | ||
7272 | out_freepage: | |
7273 | put_page(page); | |
7274 | if (err == -EACCES) | |
7275 | return -EPERM; | |
7276 | out: | |
7277 | return err; | |
7278 | } | |
1cab0652 | 7279 | |
ab7cb0df TM |
7280 | static int _nfs41_test_stateid(struct nfs_server *server, |
7281 | nfs4_stateid *stateid, | |
7282 | struct rpc_cred *cred) | |
7d974794 BS |
7283 | { |
7284 | int status; | |
7285 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7286 | .stateid = stateid, |
7d974794 BS |
7287 | }; |
7288 | struct nfs41_test_stateid_res res; | |
7289 | struct rpc_message msg = { | |
7290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7291 | .rpc_argp = &args, | |
7292 | .rpc_resp = &res, | |
ab7cb0df | 7293 | .rpc_cred = cred, |
7d974794 | 7294 | }; |
1cab0652 | 7295 | |
38527b15 | 7296 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 7297 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
7298 | nfs4_set_sequence_privileged(&args.seq_args); |
7299 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
7300 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
7301 | if (status != NFS_OK) { |
7302 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7303 | return status; |
38527b15 CL |
7304 | } |
7305 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7306 | return -res.status; |
7d974794 BS |
7307 | } |
7308 | ||
38527b15 CL |
7309 | /** |
7310 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7311 | * | |
7312 | * @server: server / transport on which to perform the operation | |
7313 | * @stateid: state ID to test | |
ab7cb0df | 7314 | * @cred: credential |
38527b15 CL |
7315 | * |
7316 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7317 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7318 | * failed or the state ID is not currently valid. | |
7319 | */ | |
ab7cb0df TM |
7320 | static int nfs41_test_stateid(struct nfs_server *server, |
7321 | nfs4_stateid *stateid, | |
7322 | struct rpc_cred *cred) | |
7d974794 BS |
7323 | { |
7324 | struct nfs4_exception exception = { }; | |
7325 | int err; | |
7326 | do { | |
ab7cb0df | 7327 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
7328 | if (err != -NFS4ERR_DELAY) |
7329 | break; | |
7330 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7331 | } while (exception.retry); |
7332 | return err; | |
7333 | } | |
9aeda35f | 7334 | |
7c1d5fae TM |
7335 | struct nfs_free_stateid_data { |
7336 | struct nfs_server *server; | |
7337 | struct nfs41_free_stateid_args args; | |
9aeda35f | 7338 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
7339 | }; |
7340 | ||
7341 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
7342 | { | |
7343 | struct nfs_free_stateid_data *data = calldata; | |
7344 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
7345 | &data->args.seq_args, | |
7346 | &data->res.seq_res, | |
7347 | task); | |
7348 | } | |
7349 | ||
7350 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
7351 | { | |
7352 | struct nfs_free_stateid_data *data = calldata; | |
7353 | ||
7354 | nfs41_sequence_done(task, &data->res.seq_res); | |
7355 | ||
7356 | switch (task->tk_status) { | |
7357 | case -NFS4ERR_DELAY: | |
7358 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
7359 | rpc_restart_call_prepare(task); | |
7360 | } | |
7361 | } | |
7362 | ||
7363 | static void nfs41_free_stateid_release(void *calldata) | |
7364 | { | |
7365 | kfree(calldata); | |
7366 | } | |
7367 | ||
17f26b12 | 7368 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
7369 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
7370 | .rpc_call_done = nfs41_free_stateid_done, | |
7371 | .rpc_release = nfs41_free_stateid_release, | |
7372 | }; | |
7373 | ||
7374 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
7375 | nfs4_stateid *stateid, | |
ab7cb0df | 7376 | struct rpc_cred *cred, |
7c1d5fae TM |
7377 | bool privileged) |
7378 | { | |
9aeda35f BS |
7379 | struct rpc_message msg = { |
7380 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 7381 | .rpc_cred = cred, |
9aeda35f | 7382 | }; |
7c1d5fae TM |
7383 | struct rpc_task_setup task_setup = { |
7384 | .rpc_client = server->client, | |
7385 | .rpc_message = &msg, | |
7386 | .callback_ops = &nfs41_free_stateid_ops, | |
7387 | .flags = RPC_TASK_ASYNC, | |
7388 | }; | |
7389 | struct nfs_free_stateid_data *data; | |
9aeda35f | 7390 | |
38527b15 | 7391 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
7392 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7393 | if (!data) | |
7394 | return ERR_PTR(-ENOMEM); | |
7395 | data->server = server; | |
7396 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
7397 | ||
7398 | task_setup.callback_data = data; | |
7399 | ||
7400 | msg.rpc_argp = &data->args; | |
7401 | msg.rpc_resp = &data->res; | |
7402 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
7403 | if (privileged) | |
7404 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
7405 | ||
7406 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
7407 | } |
7408 | ||
38527b15 CL |
7409 | /** |
7410 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7411 | * | |
7412 | * @server: server / transport on which to perform the operation | |
7413 | * @stateid: state ID to release | |
ab7cb0df | 7414 | * @cred: credential |
38527b15 CL |
7415 | * |
7416 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7417 | * negative NFS4ERR value is returned. | |
7418 | */ | |
ab7cb0df TM |
7419 | static int nfs41_free_stateid(struct nfs_server *server, |
7420 | nfs4_stateid *stateid, | |
7421 | struct rpc_cred *cred) | |
9aeda35f | 7422 | { |
7c1d5fae TM |
7423 | struct rpc_task *task; |
7424 | int ret; | |
7425 | ||
ab7cb0df | 7426 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
7427 | if (IS_ERR(task)) |
7428 | return PTR_ERR(task); | |
7429 | ret = rpc_wait_for_completion_task(task); | |
7430 | if (!ret) | |
7431 | ret = task->tk_status; | |
7432 | rpc_put_task(task); | |
7433 | return ret; | |
9aeda35f | 7434 | } |
36281caa | 7435 | |
c8b2d0bf TM |
7436 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
7437 | { | |
7438 | struct rpc_task *task; | |
ab7cb0df | 7439 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 7440 | |
ab7cb0df | 7441 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
7442 | nfs4_free_lock_state(server, lsp); |
7443 | if (IS_ERR(task)) | |
7444 | return PTR_ERR(task); | |
7445 | rpc_put_task(task); | |
7446 | return 0; | |
7447 | } | |
7448 | ||
36281caa TM |
7449 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
7450 | const nfs4_stateid *s2) | |
7451 | { | |
2d2f24ad | 7452 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7453 | return false; |
7454 | ||
2d2f24ad | 7455 | if (s1->seqid == s2->seqid) |
36281caa | 7456 | return true; |
2d2f24ad | 7457 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7458 | return true; |
7459 | ||
7460 | return false; | |
7461 | } | |
7462 | ||
557134a3 AA |
7463 | #endif /* CONFIG_NFS_V4_1 */ |
7464 | ||
36281caa TM |
7465 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7466 | const nfs4_stateid *s2) | |
7467 | { | |
f597c537 | 7468 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7469 | } |
7470 | ||
7471 | ||
17280175 | 7472 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7473 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7474 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7475 | .recover_open = nfs4_open_reclaim, |
7476 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7477 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 7478 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7479 | }; |
7480 | ||
591d71cb | 7481 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7482 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7483 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7484 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7485 | .recover_open = nfs4_open_reclaim, | |
7486 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7487 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 7488 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7489 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7490 | }; |
7491 | #endif /* CONFIG_NFS_V4_1 */ | |
7492 | ||
17280175 | 7493 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7494 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7495 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7496 | .recover_open = nfs4_open_expired, | |
7497 | .recover_lock = nfs4_lock_expired, | |
7498 | .establish_clid = nfs4_init_clientid, | |
7499 | }; | |
7500 | ||
7501 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7502 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7503 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7504 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7505 | .recover_open = nfs41_open_expired, |
7506 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7507 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 7508 | }; |
591d71cb | 7509 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7510 | |
17280175 | 7511 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7512 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7513 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7514 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7515 | }; |
7516 | ||
7517 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7518 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7519 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7520 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7521 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7522 | }; |
7523 | #endif | |
7524 | ||
97dc1359 TM |
7525 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7526 | .minor_version = 0, | |
39c6daae TM |
7527 | .init_caps = NFS_CAP_READDIRPLUS |
7528 | | NFS_CAP_ATOMIC_OPEN | |
7529 | | NFS_CAP_CHANGE_ATTR | |
7530 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 7531 | .call_sync = _nfs4_call_sync, |
36281caa | 7532 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7533 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7534 | .free_lock_state = nfs4_release_lockowner, |
c48f4f35 TM |
7535 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7536 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7537 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7538 | }; |
7539 | ||
7540 | #if defined(CONFIG_NFS_V4_1) | |
7541 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7542 | .minor_version = 1, | |
39c6daae TM |
7543 | .init_caps = NFS_CAP_READDIRPLUS |
7544 | | NFS_CAP_ATOMIC_OPEN | |
7545 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7546 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7547 | | NFS_CAP_STATEID_NFSV41 |
7548 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 7549 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 7550 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7551 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7552 | .free_lock_state = nfs41_free_lock_state, |
c48f4f35 TM |
7553 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7554 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7555 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7556 | }; |
7557 | #endif | |
7558 | ||
42c2c424 SD |
7559 | #if defined(CONFIG_NFS_V4_2) |
7560 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7561 | .minor_version = 2, | |
7017310a BS |
7562 | .init_caps = NFS_CAP_READDIRPLUS |
7563 | | NFS_CAP_ATOMIC_OPEN | |
7564 | | NFS_CAP_CHANGE_ATTR | |
7565 | | NFS_CAP_POSIX_LOCK | |
7566 | | NFS_CAP_STATEID_NFSV41 | |
7567 | | NFS_CAP_ATOMIC_OPEN_V1, | |
42c2c424 SD |
7568 | .call_sync = nfs4_call_sync_sequence, |
7569 | .match_stateid = nfs41_match_stateid, | |
7570 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 7571 | .free_lock_state = nfs41_free_lock_state, |
42c2c424 SD |
7572 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7573 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7574 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7575 | }; | |
7576 | #endif | |
7577 | ||
97dc1359 TM |
7578 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7579 | [0] = &nfs_v4_0_minor_ops, | |
7580 | #if defined(CONFIG_NFS_V4_1) | |
7581 | [1] = &nfs_v4_1_minor_ops, | |
7582 | #endif | |
42c2c424 SD |
7583 | #if defined(CONFIG_NFS_V4_2) |
7584 | [2] = &nfs_v4_2_minor_ops, | |
7585 | #endif | |
97dc1359 TM |
7586 | }; |
7587 | ||
17f26b12 | 7588 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
7589 | .create = nfs_create, |
7590 | .lookup = nfs_lookup, | |
7591 | .atomic_open = nfs_atomic_open, | |
7592 | .link = nfs_link, | |
7593 | .unlink = nfs_unlink, | |
7594 | .symlink = nfs_symlink, | |
7595 | .mkdir = nfs_mkdir, | |
7596 | .rmdir = nfs_rmdir, | |
7597 | .mknod = nfs_mknod, | |
7598 | .rename = nfs_rename, | |
7599 | .permission = nfs_permission, | |
7600 | .getattr = nfs_getattr, | |
7601 | .setattr = nfs_setattr, | |
7602 | .getxattr = generic_getxattr, | |
7603 | .setxattr = generic_setxattr, | |
7604 | .listxattr = generic_listxattr, | |
7605 | .removexattr = generic_removexattr, | |
7606 | }; | |
7607 | ||
92e1d5be | 7608 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7609 | .permission = nfs_permission, |
7610 | .getattr = nfs_getattr, | |
7611 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7612 | .getxattr = generic_getxattr, |
7613 | .setxattr = generic_setxattr, | |
7614 | .listxattr = generic_listxattr, | |
7615 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7616 | }; |
7617 | ||
509de811 | 7618 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7619 | .version = 4, /* protocol version */ |
7620 | .dentry_ops = &nfs4_dentry_operations, | |
7621 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7622 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7623 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7624 | .getroot = nfs4_proc_get_root, |
281cad46 | 7625 | .submount = nfs4_submount, |
ff9099f2 | 7626 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7627 | .getattr = nfs4_proc_getattr, |
7628 | .setattr = nfs4_proc_setattr, | |
7629 | .lookup = nfs4_proc_lookup, | |
7630 | .access = nfs4_proc_access, | |
7631 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7632 | .create = nfs4_proc_create, |
7633 | .remove = nfs4_proc_remove, | |
7634 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7635 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7636 | .unlink_done = nfs4_proc_unlink_done, |
7637 | .rename = nfs4_proc_rename, | |
d3d4152a | 7638 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7639 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7640 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7641 | .link = nfs4_proc_link, |
7642 | .symlink = nfs4_proc_symlink, | |
7643 | .mkdir = nfs4_proc_mkdir, | |
7644 | .rmdir = nfs4_proc_remove, | |
7645 | .readdir = nfs4_proc_readdir, | |
7646 | .mknod = nfs4_proc_mknod, | |
7647 | .statfs = nfs4_proc_statfs, | |
7648 | .fsinfo = nfs4_proc_fsinfo, | |
7649 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7650 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7651 | .decode_dirent = nfs4_decode_dirent, |
7652 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7653 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7654 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7655 | .read_done = nfs4_read_done, |
1da177e4 | 7656 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7657 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7658 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7659 | .write_done = nfs4_write_done, |
1da177e4 | 7660 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7661 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7662 | .commit_done = nfs4_commit_done, |
1da177e4 | 7663 | .lock = nfs4_proc_lock, |
e50a1c2e | 7664 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7665 | .close_context = nfs4_close_context, |
2b484297 | 7666 | .open_context = nfs4_atomic_open, |
011e2a7f | 7667 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7668 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7669 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7670 | .init_client = nfs4_init_client, |
cdb7eced | 7671 | .free_client = nfs4_free_client, |
1179acc6 BS |
7672 | .create_server = nfs4_create_server, |
7673 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7674 | }; |
7675 | ||
64c2ce8b AK |
7676 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7677 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7678 | .list = nfs4_xattr_list_nfs4_acl, | |
7679 | .get = nfs4_xattr_get_nfs4_acl, | |
7680 | .set = nfs4_xattr_set_nfs4_acl, | |
7681 | }; | |
7682 | ||
7683 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7684 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
7685 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
7686 | &nfs4_xattr_nfs4_label_handler, | |
7687 | #endif | |
64c2ce8b AK |
7688 | NULL |
7689 | }; | |
7690 | ||
1da177e4 LT |
7691 | /* |
7692 | * Local variables: | |
7693 | * c-basic-offset: 8 | |
7694 | * End: | |
7695 | */ |