Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
cdd4e68b | 74 | struct nfs4_opendata; |
864472e9 | 75 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 76 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 77 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 78 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 79 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
80 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
81 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
82 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
83 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
84 | struct nfs4_state *state, struct nfs4_label *ilabel, |
85 | struct nfs4_label *olabel); | |
f062eb6c | 86 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
87 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
88 | struct rpc_cred *); | |
89 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
90 | struct rpc_cred *); | |
f062eb6c | 91 | #endif |
aa9c2669 DQ |
92 | |
93 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
94 | static inline struct nfs4_label * | |
95 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
96 | struct iattr *sattr, struct nfs4_label *label) | |
97 | { | |
98 | int err; | |
99 | ||
100 | if (label == NULL) | |
101 | return NULL; | |
102 | ||
103 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
104 | return NULL; | |
105 | ||
106 | if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2) | |
107 | return NULL; | |
108 | ||
109 | err = security_dentry_init_security(dentry, sattr->ia_mode, | |
110 | &dentry->d_name, (void **)&label->label, &label->len); | |
111 | if (err == 0) | |
112 | return label; | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | static inline void | |
117 | nfs4_label_release_security(struct nfs4_label *label) | |
118 | { | |
119 | if (label) | |
120 | security_release_secctx(label->label, label->len); | |
121 | } | |
122 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
123 | { | |
124 | if (label) | |
125 | return server->attr_bitmask; | |
126 | ||
127 | return server->attr_bitmask_nl; | |
128 | } | |
129 | #else | |
130 | static inline struct nfs4_label * | |
131 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
132 | struct iattr *sattr, struct nfs4_label *l) | |
133 | { return NULL; } | |
134 | static inline void | |
135 | nfs4_label_release_security(struct nfs4_label *label) | |
136 | { return; } | |
137 | static inline u32 * | |
138 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
139 | { return server->attr_bitmask; } | |
140 | #endif | |
141 | ||
1da177e4 | 142 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 143 | static int nfs4_map_errors(int err) |
1da177e4 | 144 | { |
52567b03 TM |
145 | if (err >= -1000) |
146 | return err; | |
147 | switch (err) { | |
148 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
149 | case -NFS4ERR_LAYOUTTRYLATER: |
150 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 151 | return -EREMOTEIO; |
7ebb9315 BS |
152 | case -NFS4ERR_WRONGSEC: |
153 | return -EPERM; | |
3ddeb7c5 TM |
154 | case -NFS4ERR_BADOWNER: |
155 | case -NFS4ERR_BADNAME: | |
156 | return -EINVAL; | |
fb13bfa7 TM |
157 | case -NFS4ERR_SHARE_DENIED: |
158 | return -EACCES; | |
f25efd85 SD |
159 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
160 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
161 | case -NFS4ERR_ACCESS: |
162 | return -EACCES; | |
6e3cf241 TM |
163 | case -NFS4ERR_FILE_OPEN: |
164 | return -EBUSY; | |
52567b03 | 165 | default: |
1da177e4 | 166 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 167 | __func__, -err); |
52567b03 | 168 | break; |
1da177e4 | 169 | } |
52567b03 | 170 | return -EIO; |
1da177e4 LT |
171 | } |
172 | ||
173 | /* | |
174 | * This is our standard bitmap for GETATTR requests. | |
175 | */ | |
1549210f | 176 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
177 | FATTR4_WORD0_TYPE |
178 | | FATTR4_WORD0_CHANGE | |
179 | | FATTR4_WORD0_SIZE | |
180 | | FATTR4_WORD0_FSID | |
181 | | FATTR4_WORD0_FILEID, | |
182 | FATTR4_WORD1_MODE | |
183 | | FATTR4_WORD1_NUMLINKS | |
184 | | FATTR4_WORD1_OWNER | |
185 | | FATTR4_WORD1_OWNER_GROUP | |
186 | | FATTR4_WORD1_RAWDEV | |
187 | | FATTR4_WORD1_SPACE_USED | |
188 | | FATTR4_WORD1_TIME_ACCESS | |
189 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
190 | | FATTR4_WORD1_TIME_MODIFY, |
191 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
192 | FATTR4_WORD2_SECURITY_LABEL | |
193 | #endif | |
1da177e4 LT |
194 | }; |
195 | ||
1549210f TM |
196 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
197 | FATTR4_WORD0_TYPE | |
198 | | FATTR4_WORD0_CHANGE | |
199 | | FATTR4_WORD0_SIZE | |
200 | | FATTR4_WORD0_FSID | |
201 | | FATTR4_WORD0_FILEID, | |
202 | FATTR4_WORD1_MODE | |
203 | | FATTR4_WORD1_NUMLINKS | |
204 | | FATTR4_WORD1_OWNER | |
205 | | FATTR4_WORD1_OWNER_GROUP | |
206 | | FATTR4_WORD1_RAWDEV | |
207 | | FATTR4_WORD1_SPACE_USED | |
208 | | FATTR4_WORD1_TIME_ACCESS | |
209 | | FATTR4_WORD1_TIME_METADATA | |
210 | | FATTR4_WORD1_TIME_MODIFY, | |
211 | FATTR4_WORD2_MDSTHRESHOLD | |
212 | }; | |
213 | ||
e23008ec AA |
214 | static const u32 nfs4_open_noattr_bitmap[3] = { |
215 | FATTR4_WORD0_TYPE | |
216 | | FATTR4_WORD0_CHANGE | |
217 | | FATTR4_WORD0_FILEID, | |
218 | }; | |
219 | ||
a09df2ca | 220 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
221 | FATTR4_WORD0_FILES_AVAIL |
222 | | FATTR4_WORD0_FILES_FREE | |
223 | | FATTR4_WORD0_FILES_TOTAL, | |
224 | FATTR4_WORD1_SPACE_AVAIL | |
225 | | FATTR4_WORD1_SPACE_FREE | |
226 | | FATTR4_WORD1_SPACE_TOTAL | |
227 | }; | |
228 | ||
a09df2ca | 229 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
230 | FATTR4_WORD0_MAXLINK |
231 | | FATTR4_WORD0_MAXNAME, | |
232 | 0 | |
233 | }; | |
234 | ||
dae100c2 | 235 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
236 | | FATTR4_WORD0_MAXREAD |
237 | | FATTR4_WORD0_MAXWRITE | |
238 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 239 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
240 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
241 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
242 | }; |
243 | ||
a09df2ca | 244 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
245 | FATTR4_WORD0_TYPE |
246 | | FATTR4_WORD0_CHANGE | |
247 | | FATTR4_WORD0_SIZE | |
248 | | FATTR4_WORD0_FSID | |
249 | | FATTR4_WORD0_FILEID | |
250 | | FATTR4_WORD0_FS_LOCATIONS, | |
251 | FATTR4_WORD1_MODE | |
252 | | FATTR4_WORD1_NUMLINKS | |
253 | | FATTR4_WORD1_OWNER | |
254 | | FATTR4_WORD1_OWNER_GROUP | |
255 | | FATTR4_WORD1_RAWDEV | |
256 | | FATTR4_WORD1_SPACE_USED | |
257 | | FATTR4_WORD1_TIME_ACCESS | |
258 | | FATTR4_WORD1_TIME_METADATA | |
259 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 260 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
261 | }; |
262 | ||
bc4785cd | 263 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
264 | struct nfs4_readdir_arg *readdir) |
265 | { | |
0dbb4c67 | 266 | __be32 *start, *p; |
1da177e4 | 267 | |
1da177e4 | 268 | if (cookie > 2) { |
b7ef1956 | 269 | readdir->cookie = cookie; |
1da177e4 LT |
270 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
271 | return; | |
272 | } | |
273 | ||
274 | readdir->cookie = 0; | |
275 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
276 | if (cookie == 2) | |
277 | return; | |
278 | ||
279 | /* | |
280 | * NFSv4 servers do not return entries for '.' and '..' | |
281 | * Therefore, we fake these entries here. We let '.' | |
282 | * have cookie 0 and '..' have cookie 1. Note that | |
283 | * when talking to the server, we always send cookie 0 | |
284 | * instead of 1 or 2. | |
285 | */ | |
2b86ce2d | 286 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
287 | |
288 | if (cookie == 0) { | |
289 | *p++ = xdr_one; /* next */ | |
290 | *p++ = xdr_zero; /* cookie, first word */ | |
291 | *p++ = xdr_one; /* cookie, second word */ | |
292 | *p++ = xdr_one; /* entry len */ | |
293 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
294 | p++; | |
295 | *p++ = xdr_one; /* bitmap length */ | |
296 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
297 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 298 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
299 | } |
300 | ||
301 | *p++ = xdr_one; /* next */ | |
302 | *p++ = xdr_zero; /* cookie, first word */ | |
303 | *p++ = xdr_two; /* cookie, second word */ | |
304 | *p++ = xdr_two; /* entry len */ | |
305 | memcpy(p, "..\0\0", 4); /* entry */ | |
306 | p++; | |
307 | *p++ = xdr_one; /* bitmap length */ | |
308 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
309 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 310 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
311 | |
312 | readdir->pgbase = (char *)p - (char *)start; | |
313 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 314 | kunmap_atomic(start); |
1da177e4 LT |
315 | } |
316 | ||
65de872e TM |
317 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
318 | { | |
319 | int res = 0; | |
320 | ||
321 | might_sleep(); | |
322 | ||
323 | if (*timeout <= 0) | |
324 | *timeout = NFS4_POLL_RETRY_MIN; | |
325 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
326 | *timeout = NFS4_POLL_RETRY_MAX; | |
416ad3c9 | 327 | freezable_schedule_timeout_killable_unsafe(*timeout); |
65de872e TM |
328 | if (fatal_signal_pending(current)) |
329 | res = -ERESTARTSYS; | |
330 | *timeout <<= 1; | |
331 | return res; | |
332 | } | |
333 | ||
334 | /* This is the error handling routine for processes that are allowed | |
335 | * to sleep. | |
336 | */ | |
b064eca2 | 337 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
338 | { |
339 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 340 | struct nfs4_state *state = exception->state; |
3114ea7a | 341 | struct inode *inode = exception->inode; |
65de872e TM |
342 | int ret = errorcode; |
343 | ||
344 | exception->retry = 0; | |
345 | switch(errorcode) { | |
346 | case 0: | |
347 | return 0; | |
3114ea7a | 348 | case -NFS4ERR_OPENMODE: |
011e2a7f | 349 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 350 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
351 | exception->retry = 1; |
352 | return 0; | |
353 | } | |
354 | if (state == NULL) | |
355 | break; | |
5d422301 TM |
356 | ret = nfs4_schedule_stateid_recovery(server, state); |
357 | if (ret < 0) | |
358 | break; | |
3114ea7a | 359 | goto wait_on_recovery; |
a1d0b5ee | 360 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
361 | case -NFS4ERR_ADMIN_REVOKED: |
362 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
363 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
364 | nfs_remove_bad_delegation(inode); | |
365 | exception->retry = 1; | |
366 | break; | |
367 | } | |
9e33bed5 TM |
368 | if (state == NULL) |
369 | break; | |
5d422301 TM |
370 | ret = nfs4_schedule_stateid_recovery(server, state); |
371 | if (ret < 0) | |
372 | break; | |
0400a6b0 | 373 | goto wait_on_recovery; |
0ced63d1 | 374 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
375 | if (state != NULL) { |
376 | ret = nfs4_schedule_stateid_recovery(server, state); | |
377 | if (ret < 0) | |
378 | break; | |
379 | } | |
65de872e | 380 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 381 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
382 | nfs4_schedule_lease_recovery(clp); |
383 | goto wait_on_recovery; | |
03391693 | 384 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
385 | case -NFS4ERR_BADSESSION: |
386 | case -NFS4ERR_BADSLOT: | |
387 | case -NFS4ERR_BAD_HIGH_SLOT: | |
388 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
389 | case -NFS4ERR_DEADSESSION: | |
390 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
391 | case -NFS4ERR_SEQ_MISORDERED: | |
392 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
393 | errorcode); | |
9f594791 | 394 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 395 | goto wait_on_recovery; |
03391693 | 396 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 397 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
398 | if (exception->timeout > HZ) { |
399 | /* We have retried a decent amount, time to | |
400 | * fail | |
401 | */ | |
402 | ret = -EBUSY; | |
403 | break; | |
404 | } | |
65de872e TM |
405 | case -NFS4ERR_GRACE: |
406 | case -NFS4ERR_DELAY: | |
407 | ret = nfs4_delay(server->client, &exception->timeout); | |
408 | if (ret != 0) | |
409 | break; | |
a8a4ae3a | 410 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
411 | case -NFS4ERR_OLD_STATEID: |
412 | exception->retry = 1; | |
b064eca2 TM |
413 | break; |
414 | case -NFS4ERR_BADOWNER: | |
415 | /* The following works around a Linux server bug! */ | |
416 | case -NFS4ERR_BADNAME: | |
417 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
418 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
419 | exception->retry = 1; | |
420 | printk(KERN_WARNING "NFS: v4 server %s " | |
421 | "does not accept raw " | |
422 | "uid/gids. " | |
423 | "Reenabling the idmapper.\n", | |
424 | server->nfs_client->cl_hostname); | |
425 | } | |
65de872e TM |
426 | } |
427 | /* We failed to handle the error */ | |
428 | return nfs4_map_errors(ret); | |
0400a6b0 | 429 | wait_on_recovery: |
a2c0b9e2 TM |
430 | ret = nfs4_wait_clnt_recover(clp); |
431 | if (ret == 0) | |
432 | exception->retry = 1; | |
433 | return ret; | |
65de872e TM |
434 | } |
435 | ||
436 | ||
452e9352 | 437 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 438 | { |
1da177e4 LT |
439 | spin_lock(&clp->cl_lock); |
440 | if (time_before(clp->cl_last_renewal,timestamp)) | |
441 | clp->cl_last_renewal = timestamp; | |
442 | spin_unlock(&clp->cl_lock); | |
443 | } | |
444 | ||
452e9352 TM |
445 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
446 | { | |
447 | do_renew_lease(server->nfs_client, timestamp); | |
448 | } | |
449 | ||
cccef3b9 AA |
450 | #if defined(CONFIG_NFS_V4_1) |
451 | ||
d185a334 | 452 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 453 | { |
e3725ec0 | 454 | struct nfs4_session *session; |
13615871 | 455 | struct nfs4_slot_table *tbl; |
c10e4498 | 456 | bool send_new_highest_used_slotid = false; |
13615871 | 457 | |
dfb4f309 | 458 | if (!res->sr_slot) { |
13615871 AA |
459 | /* just wake up the next guy waiting since |
460 | * we may have not consumed a slot after all */ | |
691daf3b | 461 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 462 | return; |
13615871 | 463 | } |
e3725ec0 TM |
464 | tbl = res->sr_slot->table; |
465 | session = tbl->session; | |
ea028ac9 | 466 | |
35dc1d74 | 467 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
468 | /* Be nice to the server: try to ensure that the last transmitted |
469 | * value for highest_user_slotid <= target_highest_slotid | |
470 | */ | |
471 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
472 | send_new_highest_used_slotid = true; | |
473 | ||
b75ad4cd TM |
474 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
475 | send_new_highest_used_slotid = false; | |
476 | goto out_unlock; | |
477 | } | |
f4af6e2a | 478 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
479 | |
480 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
481 | send_new_highest_used_slotid = false; | |
b75ad4cd | 482 | out_unlock: |
35dc1d74 | 483 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 484 | res->sr_slot = NULL; |
c10e4498 TM |
485 | if (send_new_highest_used_slotid) |
486 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
487 | } |
488 | ||
14516c3a | 489 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 490 | { |
e3725ec0 | 491 | struct nfs4_session *session; |
933602e3 | 492 | struct nfs4_slot *slot; |
14516c3a | 493 | struct nfs_client *clp; |
ac20d163 | 494 | bool interrupted = false; |
85563073 | 495 | int ret = 1; |
b0df806c | 496 | |
468f8613 BS |
497 | /* don't increment the sequence number if the task wasn't sent */ |
498 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
499 | goto out; |
500 | ||
933602e3 | 501 | slot = res->sr_slot; |
e3725ec0 | 502 | session = slot->table->session; |
933602e3 | 503 | |
ac20d163 TM |
504 | if (slot->interrupted) { |
505 | slot->interrupted = 0; | |
506 | interrupted = true; | |
507 | } | |
508 | ||
691daf3b | 509 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
510 | switch (res->sr_status) { |
511 | case 0: | |
b0df806c | 512 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 513 | ++slot->seq_nr; |
e3725ec0 | 514 | clp = session->clp; |
8e63b6a8 | 515 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 516 | /* Check sequence flags */ |
b4410c2f TM |
517 | if (res->sr_status_flags != 0) |
518 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 519 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 520 | break; |
ac20d163 TM |
521 | case 1: |
522 | /* | |
523 | * sr_status remains 1 if an RPC level error occurred. | |
524 | * The server may or may not have processed the sequence | |
525 | * operation.. | |
526 | * Mark the slot as having hosted an interrupted RPC call. | |
527 | */ | |
528 | slot->interrupted = 1; | |
529 | goto out; | |
14516c3a TM |
530 | case -NFS4ERR_DELAY: |
531 | /* The server detected a resend of the RPC call and | |
532 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
533 | * of RFC5661. | |
534 | */ | |
df2fabff | 535 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 536 | __func__, |
df2fabff | 537 | slot->slot_nr, |
933602e3 | 538 | slot->seq_nr); |
14516c3a | 539 | goto out_retry; |
85563073 TM |
540 | case -NFS4ERR_BADSLOT: |
541 | /* | |
542 | * The slot id we used was probably retired. Try again | |
543 | * using a different slot id. | |
544 | */ | |
e8794440 TM |
545 | goto retry_nowait; |
546 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
547 | /* |
548 | * Was the last operation on this sequence interrupted? | |
549 | * If so, retry after bumping the sequence number. | |
550 | */ | |
551 | if (interrupted) { | |
552 | ++slot->seq_nr; | |
553 | goto retry_nowait; | |
554 | } | |
e8794440 TM |
555 | /* |
556 | * Could this slot have been previously retired? | |
557 | * If so, then the server may be expecting seq_nr = 1! | |
558 | */ | |
8e63b6a8 TM |
559 | if (slot->seq_nr != 1) { |
560 | slot->seq_nr = 1; | |
561 | goto retry_nowait; | |
562 | } | |
563 | break; | |
e8794440 TM |
564 | case -NFS4ERR_SEQ_FALSE_RETRY: |
565 | ++slot->seq_nr; | |
566 | goto retry_nowait; | |
14516c3a TM |
567 | default: |
568 | /* Just update the slot sequence no. */ | |
933602e3 | 569 | ++slot->seq_nr; |
b0df806c AA |
570 | } |
571 | out: | |
572 | /* The session may be reset by one of the error handlers. */ | |
573 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 574 | nfs41_sequence_free_slot(res); |
85563073 | 575 | return ret; |
e8794440 TM |
576 | retry_nowait: |
577 | if (rpc_restart_call_prepare(task)) { | |
578 | task->tk_status = 0; | |
579 | ret = 0; | |
580 | } | |
581 | goto out; | |
14516c3a | 582 | out_retry: |
d05dd4e9 | 583 | if (!rpc_restart_call(task)) |
14516c3a TM |
584 | goto out; |
585 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
586 | return 0; | |
b0df806c AA |
587 | } |
588 | ||
14516c3a TM |
589 | static int nfs4_sequence_done(struct rpc_task *task, |
590 | struct nfs4_sequence_res *res) | |
df896455 | 591 | { |
e3725ec0 | 592 | if (res->sr_slot == NULL) |
14516c3a TM |
593 | return 1; |
594 | return nfs41_sequence_done(task, res); | |
df896455 TM |
595 | } |
596 | ||
9d12b216 TM |
597 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
598 | struct nfs4_sequence_res *res, int cache_reply) | |
599 | { | |
2b2fa717 | 600 | args->sa_slot = NULL; |
9d12b216 | 601 | args->sa_cache_this = 0; |
8fe72bac | 602 | args->sa_privileged = 0; |
9d12b216 TM |
603 | if (cache_reply) |
604 | args->sa_cache_this = 1; | |
9d12b216 TM |
605 | res->sr_slot = NULL; |
606 | } | |
607 | ||
8fe72bac TM |
608 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
609 | { | |
610 | args->sa_privileged = 1; | |
611 | } | |
612 | ||
dc70d7b3 | 613 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
614 | struct nfs4_sequence_args *args, |
615 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
616 | struct rpc_task *task) |
617 | { | |
fbcd4abc AA |
618 | struct nfs4_slot *slot; |
619 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
620 | |
621 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 622 | /* slot already allocated? */ |
dfb4f309 | 623 | if (res->sr_slot != NULL) |
d9afbd1b | 624 | goto out_success; |
ce5039c1 | 625 | |
fbcd4abc AA |
626 | tbl = &session->fc_slot_table; |
627 | ||
69d206b5 TM |
628 | task->tk_timeout = 0; |
629 | ||
fbcd4abc | 630 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 631 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 632 | !args->sa_privileged) { |
0b1c8fc4 | 633 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 634 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 635 | goto out_sleep; |
689cf5c1 AB |
636 | } |
637 | ||
2dc03b7f | 638 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
639 | if (IS_ERR(slot)) { |
640 | /* If out of memory, try again in 1/4 second */ | |
641 | if (slot == ERR_PTR(-ENOMEM)) | |
642 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 643 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 644 | goto out_sleep; |
fbcd4abc AA |
645 | } |
646 | spin_unlock(&tbl->slot_tbl_lock); | |
647 | ||
2b2fa717 | 648 | args->sa_slot = slot; |
fbcd4abc | 649 | |
2dc03b7f TM |
650 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
651 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 652 | |
dfb4f309 | 653 | res->sr_slot = slot; |
8e63b6a8 | 654 | res->sr_timestamp = jiffies; |
2a6e26cd | 655 | res->sr_status_flags = 0; |
fbcd4abc AA |
656 | /* |
657 | * sr_status is only set in decode_sequence, and so will remain | |
658 | * set to 1 if an rpc level failure occurs. | |
659 | */ | |
660 | res->sr_status = 1; | |
d9afbd1b TM |
661 | out_success: |
662 | rpc_call_start(task); | |
ce5039c1 | 663 | return 0; |
7b939a3f | 664 | out_sleep: |
8fe72bac TM |
665 | /* Privileged tasks are queued with top priority */ |
666 | if (args->sa_privileged) | |
1e1093c7 TM |
667 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
668 | NULL, RPC_PRIORITY_PRIVILEGED); | |
669 | else | |
670 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
671 | spin_unlock(&tbl->slot_tbl_lock); |
672 | return -EAGAIN; | |
ce5039c1 | 673 | } |
dc70d7b3 | 674 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 675 | |
035168ab | 676 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
677 | struct nfs4_sequence_args *args, |
678 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
679 | struct rpc_task *task) |
680 | { | |
035168ab | 681 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
682 | int ret = 0; |
683 | ||
d9afbd1b TM |
684 | if (session == NULL) { |
685 | rpc_call_start(task); | |
035168ab | 686 | goto out; |
d9afbd1b | 687 | } |
035168ab | 688 | |
df2fabff | 689 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 690 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 691 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 692 | |
9d12b216 | 693 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
694 | out: |
695 | dprintk("<-- %s status=%d\n", __func__, ret); | |
696 | return ret; | |
697 | } | |
698 | ||
699 | struct nfs41_call_sync_data { | |
035168ab | 700 | const struct nfs_server *seq_server; |
ce5039c1 AA |
701 | struct nfs4_sequence_args *seq_args; |
702 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
703 | }; |
704 | ||
705 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
706 | { | |
707 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 708 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 709 | |
035168ab TM |
710 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
711 | ||
d9afbd1b | 712 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
713 | } |
714 | ||
69ab40c4 AA |
715 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
716 | { | |
717 | struct nfs41_call_sync_data *data = calldata; | |
718 | ||
14516c3a | 719 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
720 | } |
721 | ||
17280175 | 722 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 723 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 724 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
725 | }; |
726 | ||
7c513058 BS |
727 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
728 | struct nfs_server *server, | |
ce5039c1 AA |
729 | struct rpc_message *msg, |
730 | struct nfs4_sequence_args *args, | |
8fe72bac | 731 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
732 | { |
733 | int ret; | |
734 | struct rpc_task *task; | |
735 | struct nfs41_call_sync_data data = { | |
035168ab | 736 | .seq_server = server, |
ce5039c1 AA |
737 | .seq_args = args, |
738 | .seq_res = res, | |
ce5039c1 AA |
739 | }; |
740 | struct rpc_task_setup task_setup = { | |
7c513058 | 741 | .rpc_client = clnt, |
ce5039c1 AA |
742 | .rpc_message = msg, |
743 | .callback_ops = &nfs41_call_sync_ops, | |
744 | .callback_data = &data | |
745 | }; | |
746 | ||
ce5039c1 AA |
747 | task = rpc_run_task(&task_setup); |
748 | if (IS_ERR(task)) | |
749 | ret = PTR_ERR(task); | |
750 | else { | |
751 | ret = task->tk_status; | |
752 | rpc_put_task(task); | |
753 | } | |
754 | return ret; | |
755 | } | |
756 | ||
df896455 | 757 | #else |
8fe72bac | 758 | static |
9d12b216 TM |
759 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
760 | struct nfs4_sequence_res *res, int cache_reply) | |
761 | { | |
762 | } | |
763 | ||
8fe72bac TM |
764 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
765 | { | |
766 | } | |
767 | ||
768 | ||
14516c3a TM |
769 | static int nfs4_sequence_done(struct rpc_task *task, |
770 | struct nfs4_sequence_res *res) | |
df896455 | 771 | { |
14516c3a | 772 | return 1; |
df896455 | 773 | } |
cccef3b9 AA |
774 | #endif /* CONFIG_NFS_V4_1 */ |
775 | ||
fd0c0953 | 776 | static |
7c513058 BS |
777 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
778 | struct nfs_server *server, | |
cccef3b9 AA |
779 | struct rpc_message *msg, |
780 | struct nfs4_sequence_args *args, | |
fd0c0953 | 781 | struct nfs4_sequence_res *res) |
cccef3b9 | 782 | { |
7c513058 | 783 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
784 | } |
785 | ||
fd0c0953 | 786 | static |
7c513058 BS |
787 | int nfs4_call_sync(struct rpc_clnt *clnt, |
788 | struct nfs_server *server, | |
e73b83f2 BS |
789 | struct rpc_message *msg, |
790 | struct nfs4_sequence_args *args, | |
791 | struct nfs4_sequence_res *res, | |
792 | int cache_reply) | |
793 | { | |
fd0c0953 | 794 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 795 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 796 | args, res); |
e73b83f2 | 797 | } |
cccef3b9 | 798 | |
38478b24 | 799 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 800 | { |
38478b24 | 801 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 802 | |
38478b24 | 803 | spin_lock(&dir->i_lock); |
359d7d1c | 804 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 805 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 806 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 807 | dir->i_version = cinfo->after; |
de242c0b | 808 | nfs_fscache_invalidate(dir); |
38478b24 | 809 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
810 | } |
811 | ||
e56e0b78 | 812 | struct nfs4_opendata { |
c6d00e63 | 813 | struct kref kref; |
e56e0b78 TM |
814 | struct nfs_openargs o_arg; |
815 | struct nfs_openres o_res; | |
cdd4e68b TM |
816 | struct nfs_open_confirmargs c_arg; |
817 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
818 | struct nfs4_string owner_name; |
819 | struct nfs4_string group_name; | |
e56e0b78 | 820 | struct nfs_fattr f_attr; |
1775fd3e | 821 | struct nfs4_label *f_label; |
e56e0b78 | 822 | struct dentry *dir; |
82a2c1b7 | 823 | struct dentry *dentry; |
e56e0b78 | 824 | struct nfs4_state_owner *owner; |
aac00a8d | 825 | struct nfs4_state *state; |
e56e0b78 | 826 | struct iattr attrs; |
26e976a8 | 827 | unsigned long timestamp; |
3e309914 | 828 | unsigned int rpc_done : 1; |
bdeca1b7 | 829 | unsigned int is_recover : 1; |
24ac23ab TM |
830 | int rpc_status; |
831 | int cancelled; | |
e56e0b78 TM |
832 | }; |
833 | ||
49f9a0fa TM |
834 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
835 | int err, struct nfs4_exception *exception) | |
836 | { | |
837 | if (err != -EINVAL) | |
838 | return false; | |
839 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
840 | return false; | |
841 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
842 | exception->retry = 1; | |
843 | return true; | |
844 | } | |
845 | ||
846 | static enum open_claim_type4 | |
847 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
848 | enum open_claim_type4 claim) | |
849 | { | |
850 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
851 | return claim; | |
852 | switch (claim) { | |
853 | default: | |
854 | return claim; | |
855 | case NFS4_OPEN_CLAIM_FH: | |
856 | return NFS4_OPEN_CLAIM_NULL; | |
857 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
858 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
859 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
860 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
861 | } | |
862 | } | |
2ced46c2 TM |
863 | |
864 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
865 | { | |
866 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 867 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
868 | p->o_res.seqid = p->o_arg.seqid; |
869 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 870 | p->o_res.server = p->o_arg.server; |
5f657530 | 871 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 872 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 873 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
874 | } |
875 | ||
82a2c1b7 | 876 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 877 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 878 | const struct iattr *attrs, |
1775fd3e | 879 | struct nfs4_label *label, |
4a1c0893 | 880 | enum open_claim_type4 claim, |
8535b2be | 881 | gfp_t gfp_mask) |
e56e0b78 | 882 | { |
82a2c1b7 | 883 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
884 | struct inode *dir = parent->d_inode; |
885 | struct nfs_server *server = NFS_SERVER(dir); | |
886 | struct nfs4_opendata *p; | |
887 | ||
8535b2be | 888 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
889 | if (p == NULL) |
890 | goto err; | |
14c43f76 DQ |
891 | |
892 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
893 | if (IS_ERR(p->f_label)) | |
894 | goto err_free_p; | |
895 | ||
8535b2be | 896 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 897 | if (p->o_arg.seqid == NULL) |
14c43f76 | 898 | goto err_free_label; |
82a2c1b7 AV |
899 | nfs_sb_active(dentry->d_sb); |
900 | p->dentry = dget(dentry); | |
e56e0b78 TM |
901 | p->dir = parent; |
902 | p->owner = sp; | |
903 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
904 | p->o_arg.open_flags = flags; |
905 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
906 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
907 | * will return permission denied for all bits until close */ | |
908 | if (!(flags & O_EXCL)) { | |
909 | /* ask server to check for all possible rights as results | |
910 | * are cached */ | |
911 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
912 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 913 | } |
7539bbab | 914 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
915 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
916 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 917 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 918 | p->o_arg.server = server; |
aa9c2669 | 919 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 920 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 921 | p->o_arg.label = label; |
49f9a0fa TM |
922 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
923 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
924 | case NFS4_OPEN_CLAIM_NULL: |
925 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
926 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
927 | p->o_arg.fh = NFS_FH(dir); | |
928 | break; | |
929 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
930 | case NFS4_OPEN_CLAIM_FH: | |
931 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
932 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
933 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
934 | } | |
536e43d1 | 935 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 936 | __be32 verf[2]; |
d77d76ff | 937 | |
e56e0b78 TM |
938 | p->o_arg.u.attrs = &p->attrs; |
939 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
940 | |
941 | verf[0] = jiffies; | |
942 | verf[1] = current->pid; | |
943 | memcpy(p->o_arg.u.verifier.data, verf, | |
944 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 945 | } |
cdd4e68b TM |
946 | p->c_arg.fh = &p->o_res.fh; |
947 | p->c_arg.stateid = &p->o_res.stateid; | |
948 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 949 | nfs4_init_opendata_res(p); |
c6d00e63 | 950 | kref_init(&p->kref); |
e56e0b78 | 951 | return p; |
14c43f76 DQ |
952 | |
953 | err_free_label: | |
954 | nfs4_label_free(p->f_label); | |
955 | err_free_p: | |
e56e0b78 TM |
956 | kfree(p); |
957 | err: | |
958 | dput(parent); | |
959 | return NULL; | |
960 | } | |
961 | ||
c6d00e63 | 962 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 963 | { |
c6d00e63 TM |
964 | struct nfs4_opendata *p = container_of(kref, |
965 | struct nfs4_opendata, kref); | |
82a2c1b7 | 966 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
967 | |
968 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
969 | if (p->state != NULL) |
970 | nfs4_put_open_state(p->state); | |
c6d00e63 | 971 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
972 | |
973 | nfs4_label_free(p->f_label); | |
974 | ||
c6d00e63 | 975 | dput(p->dir); |
82a2c1b7 AV |
976 | dput(p->dentry); |
977 | nfs_sb_deactive(sb); | |
6926afd1 | 978 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
979 | kfree(p); |
980 | } | |
981 | ||
982 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
983 | { | |
984 | if (p != NULL) | |
985 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
986 | } |
987 | ||
06f814a3 TM |
988 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
989 | { | |
06f814a3 TM |
990 | int ret; |
991 | ||
06f814a3 | 992 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
993 | return ret; |
994 | } | |
995 | ||
dc0b027d | 996 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
997 | { |
998 | int ret = 0; | |
dc0b027d | 999 | |
536e43d1 | 1000 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1001 | goto out; |
1002 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1003 | case FMODE_READ: |
88069f77 TM |
1004 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1005 | && state->n_rdonly != 0; | |
6ee41268 TM |
1006 | break; |
1007 | case FMODE_WRITE: | |
88069f77 TM |
1008 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1009 | && state->n_wronly != 0; | |
6ee41268 TM |
1010 | break; |
1011 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1012 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1013 | && state->n_rdwr != 0; | |
6ee41268 | 1014 | } |
dc0b027d | 1015 | out: |
6ee41268 TM |
1016 | return ret; |
1017 | } | |
1018 | ||
dc0b027d | 1019 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1020 | { |
652f89f6 TM |
1021 | if (delegation == NULL) |
1022 | return 0; | |
dc0b027d | 1023 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1024 | return 0; |
15c831bf | 1025 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1026 | return 0; |
d25be546 TM |
1027 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1028 | return 0; | |
b7391f44 | 1029 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1030 | return 1; |
1031 | } | |
1032 | ||
dc0b027d | 1033 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1034 | { |
dc0b027d | 1035 | switch (fmode) { |
e7616923 TM |
1036 | case FMODE_WRITE: |
1037 | state->n_wronly++; | |
1038 | break; | |
1039 | case FMODE_READ: | |
1040 | state->n_rdonly++; | |
1041 | break; | |
1042 | case FMODE_READ|FMODE_WRITE: | |
1043 | state->n_rdwr++; | |
1044 | } | |
dc0b027d | 1045 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1046 | } |
1047 | ||
dc0b027d | 1048 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1049 | { |
1050 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1051 | nfs4_stateid_copy(&state->stateid, stateid); |
1052 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 1053 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 1054 | switch (fmode) { |
003707c7 TM |
1055 | case FMODE_READ: |
1056 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1057 | break; | |
1058 | case FMODE_WRITE: | |
1059 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1060 | break; | |
1061 | case FMODE_READ|FMODE_WRITE: | |
1062 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1063 | } | |
e7616923 TM |
1064 | } |
1065 | ||
dc0b027d | 1066 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1067 | { |
8bda4e4c | 1068 | write_seqlock(&state->seqlock); |
dc0b027d | 1069 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1070 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1071 | } |
1072 | ||
dc0b027d | 1073 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1074 | { |
8bda4e4c TM |
1075 | /* |
1076 | * Protect the call to nfs4_state_set_mode_locked and | |
1077 | * serialise the stateid update | |
1078 | */ | |
1079 | write_seqlock(&state->seqlock); | |
003707c7 | 1080 | if (deleg_stateid != NULL) { |
f597c537 | 1081 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1082 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1083 | } | |
1084 | if (open_stateid != NULL) | |
dc0b027d | 1085 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1086 | write_sequnlock(&state->seqlock); |
1087 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1088 | update_open_stateflags(state, fmode); |
ec073428 | 1089 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1090 | } |
1091 | ||
dc0b027d | 1092 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1093 | { |
1094 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1095 | struct nfs_delegation *deleg_cur; | |
1096 | int ret = 0; | |
1097 | ||
dc0b027d | 1098 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1099 | |
1100 | rcu_read_lock(); | |
1101 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1102 | if (deleg_cur == NULL) | |
1103 | goto no_delegation; | |
1104 | ||
1105 | spin_lock(&deleg_cur->lock); | |
1106 | if (nfsi->delegation != deleg_cur || | |
d25be546 | 1107 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1108 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1109 | goto no_delegation_unlock; |
1110 | ||
1111 | if (delegation == NULL) | |
1112 | delegation = &deleg_cur->stateid; | |
f597c537 | 1113 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1114 | goto no_delegation_unlock; |
1115 | ||
b7391f44 | 1116 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1117 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1118 | ret = 1; |
1119 | no_delegation_unlock: | |
1120 | spin_unlock(&deleg_cur->lock); | |
1121 | no_delegation: | |
1122 | rcu_read_unlock(); | |
1123 | ||
1124 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1125 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1126 | ret = 1; |
1127 | } | |
1128 | ||
1129 | return ret; | |
1130 | } | |
1131 | ||
1132 | ||
dc0b027d | 1133 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1134 | { |
1135 | struct nfs_delegation *delegation; | |
1136 | ||
1137 | rcu_read_lock(); | |
1138 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1139 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1140 | rcu_read_unlock(); |
1141 | return; | |
1142 | } | |
1143 | rcu_read_unlock(); | |
57ec14c5 | 1144 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1145 | } |
1146 | ||
6ee41268 | 1147 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1148 | { |
1149 | struct nfs4_state *state = opendata->state; | |
1150 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1151 | struct nfs_delegation *delegation; | |
f448badd | 1152 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1153 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1154 | nfs4_stateid stateid; |
1155 | int ret = -EAGAIN; | |
1156 | ||
aac00a8d | 1157 | for (;;) { |
dc0b027d | 1158 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1159 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1160 | if (can_open_cached(state, fmode, open_mode)) { |
1161 | update_open_stateflags(state, fmode); | |
6ee41268 | 1162 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1163 | goto out_return_state; |
1164 | } | |
1165 | spin_unlock(&state->owner->so_lock); | |
1166 | } | |
34310430 TM |
1167 | rcu_read_lock(); |
1168 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1169 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1170 | rcu_read_unlock(); |
aac00a8d | 1171 | break; |
34310430 | 1172 | } |
aac00a8d | 1173 | /* Save the delegation */ |
f597c537 | 1174 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1175 | rcu_read_unlock(); |
fa332941 | 1176 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1177 | if (!opendata->is_recover) { |
1178 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1179 | if (ret != 0) | |
1180 | goto out; | |
1181 | } | |
aac00a8d | 1182 | ret = -EAGAIN; |
34310430 TM |
1183 | |
1184 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1185 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1186 | goto out_return_state; |
aac00a8d | 1187 | } |
aac00a8d TM |
1188 | out: |
1189 | return ERR_PTR(ret); | |
1190 | out_return_state: | |
1191 | atomic_inc(&state->count); | |
1192 | return state; | |
1193 | } | |
1194 | ||
e23008ec AA |
1195 | static void |
1196 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1197 | { | |
1198 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1199 | struct nfs_delegation *delegation; | |
1200 | int delegation_flags = 0; | |
1201 | ||
1202 | rcu_read_lock(); | |
1203 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1204 | if (delegation) | |
1205 | delegation_flags = delegation->flags; | |
1206 | rcu_read_unlock(); | |
1207 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1208 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1209 | "returning a delegation for " | |
1210 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1211 | clp->cl_hostname); | |
1212 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1213 | nfs_inode_set_delegation(state->inode, | |
1214 | data->owner->so_cred, | |
1215 | &data->o_res); | |
1216 | else | |
1217 | nfs_inode_reclaim_delegation(state->inode, | |
1218 | data->owner->so_cred, | |
1219 | &data->o_res); | |
1220 | } | |
1221 | ||
1222 | /* | |
1223 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1224 | * and update the nfs4_state. | |
1225 | */ | |
1226 | static struct nfs4_state * | |
1227 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1228 | { | |
1229 | struct inode *inode = data->state->inode; | |
1230 | struct nfs4_state *state = data->state; | |
1231 | int ret; | |
1232 | ||
1233 | if (!data->rpc_done) { | |
1234 | ret = data->rpc_status; | |
1235 | goto err; | |
1236 | } | |
1237 | ||
1238 | ret = -ESTALE; | |
1239 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1240 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1241 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1242 | goto err; | |
1243 | ||
1244 | ret = -ENOMEM; | |
1245 | state = nfs4_get_open_state(inode, data->owner); | |
1246 | if (state == NULL) | |
1247 | goto err; | |
1248 | ||
1249 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1250 | if (ret) | |
1251 | goto err; | |
1252 | ||
aa9c2669 DQ |
1253 | nfs_setsecurity(inode, &data->f_attr, data->f_label); |
1254 | ||
e23008ec AA |
1255 | if (data->o_res.delegation_type != 0) |
1256 | nfs4_opendata_check_deleg(data, state); | |
1257 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1258 | data->o_arg.fmode); | |
1259 | ||
1260 | return state; | |
1261 | err: | |
1262 | return ERR_PTR(ret); | |
1263 | ||
1264 | } | |
1265 | ||
1266 | static struct nfs4_state * | |
1267 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1268 | { |
1269 | struct inode *inode; | |
1270 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1271 | int ret; |
24ac23ab | 1272 | |
aac00a8d | 1273 | if (!data->rpc_done) { |
6ee41268 | 1274 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1275 | goto out; |
1276 | } | |
1277 | ||
1b370bc2 | 1278 | ret = -EAGAIN; |
24ac23ab | 1279 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1280 | goto err; |
1775fd3e | 1281 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1282 | ret = PTR_ERR(inode); |
03f28e3a | 1283 | if (IS_ERR(inode)) |
1b370bc2 TM |
1284 | goto err; |
1285 | ret = -ENOMEM; | |
24ac23ab TM |
1286 | state = nfs4_get_open_state(inode, data->owner); |
1287 | if (state == NULL) | |
1b370bc2 | 1288 | goto err_put_inode; |
e23008ec AA |
1289 | if (data->o_res.delegation_type != 0) |
1290 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1291 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1292 | data->o_arg.fmode); |
24ac23ab | 1293 | iput(inode); |
aac00a8d | 1294 | out: |
7aa262b5 | 1295 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1296 | return state; |
1b370bc2 TM |
1297 | err_put_inode: |
1298 | iput(inode); | |
1299 | err: | |
1300 | return ERR_PTR(ret); | |
24ac23ab TM |
1301 | } |
1302 | ||
e23008ec AA |
1303 | static struct nfs4_state * |
1304 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1305 | { | |
1306 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1307 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1308 | return _nfs4_opendata_to_nfs4_state(data); | |
1309 | } | |
1310 | ||
864472e9 TM |
1311 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1312 | { | |
1313 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1314 | struct nfs_open_context *ctx; | |
1315 | ||
1316 | spin_lock(&state->inode->i_lock); | |
1317 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1318 | if (ctx->state != state) | |
1319 | continue; | |
1320 | get_nfs_open_context(ctx); | |
1321 | spin_unlock(&state->inode->i_lock); | |
1322 | return ctx; | |
1323 | } | |
1324 | spin_unlock(&state->inode->i_lock); | |
1325 | return ERR_PTR(-ENOENT); | |
1326 | } | |
1327 | ||
4a1c0893 TM |
1328 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1329 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1330 | { |
1331 | struct nfs4_opendata *opendata; | |
1332 | ||
4a1c0893 | 1333 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1334 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1335 | if (opendata == NULL) |
1336 | return ERR_PTR(-ENOMEM); | |
1337 | opendata->state = state; | |
1338 | atomic_inc(&state->count); | |
1339 | return opendata; | |
1340 | } | |
1341 | ||
dc0b027d | 1342 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1343 | { |
2ced46c2 | 1344 | struct nfs4_state *newstate; |
864472e9 TM |
1345 | int ret; |
1346 | ||
dc0b027d TM |
1347 | opendata->o_arg.open_flags = 0; |
1348 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1349 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1350 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1351 | nfs4_init_opendata_res(opendata); | |
b257957e | 1352 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1353 | if (ret != 0) |
1354 | return ret; | |
2ced46c2 | 1355 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1356 | if (IS_ERR(newstate)) |
1357 | return PTR_ERR(newstate); | |
643168c2 | 1358 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1359 | *res = newstate; |
864472e9 TM |
1360 | return 0; |
1361 | } | |
1362 | ||
1363 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1364 | { | |
864472e9 | 1365 | struct nfs4_state *newstate; |
864472e9 TM |
1366 | int ret; |
1367 | ||
1368 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1369 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1370 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1371 | smp_rmb(); |
1372 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1373 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1374 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1375 | if (ret != 0) |
1376 | return ret; | |
2ced46c2 TM |
1377 | if (newstate != state) |
1378 | return -ESTALE; | |
864472e9 TM |
1379 | } |
1380 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1381 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1382 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1383 | if (ret != 0) |
1384 | return ret; | |
2ced46c2 TM |
1385 | if (newstate != state) |
1386 | return -ESTALE; | |
864472e9 TM |
1387 | } |
1388 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1389 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1390 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1391 | if (ret != 0) |
1392 | return ret; | |
2ced46c2 TM |
1393 | if (newstate != state) |
1394 | return -ESTALE; | |
864472e9 | 1395 | } |
1ac7e2fd TM |
1396 | /* |
1397 | * We may have performed cached opens for all three recoveries. | |
1398 | * Check if we need to update the current stateid. | |
1399 | */ | |
1400 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1401 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1402 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1403 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1404 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1405 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1406 | } |
864472e9 TM |
1407 | return 0; |
1408 | } | |
1409 | ||
1da177e4 LT |
1410 | /* |
1411 | * OPEN_RECLAIM: | |
1412 | * reclaim state on the server after a reboot. | |
1da177e4 | 1413 | */ |
539cd03a | 1414 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1415 | { |
1ac7e2fd | 1416 | struct nfs_delegation *delegation; |
864472e9 | 1417 | struct nfs4_opendata *opendata; |
dc0b027d | 1418 | fmode_t delegation_type = 0; |
1da177e4 LT |
1419 | int status; |
1420 | ||
4a1c0893 TM |
1421 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1422 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1423 | if (IS_ERR(opendata)) |
1424 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1425 | rcu_read_lock(); |
1426 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1427 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1428 | delegation_type = delegation->type; |
1ac7e2fd | 1429 | rcu_read_unlock(); |
864472e9 TM |
1430 | opendata->o_arg.u.delegation_type = delegation_type; |
1431 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1432 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1433 | return status; |
1434 | } | |
1435 | ||
539cd03a | 1436 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1437 | { |
1438 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1439 | struct nfs4_exception exception = { }; | |
1440 | int err; | |
1441 | do { | |
539cd03a | 1442 | err = _nfs4_do_open_reclaim(ctx, state); |
49f9a0fa TM |
1443 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1444 | continue; | |
168667c4 | 1445 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1446 | break; |
1447 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1448 | } while (exception.retry); |
1449 | return err; | |
1450 | } | |
1451 | ||
864472e9 TM |
1452 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1453 | { | |
1454 | struct nfs_open_context *ctx; | |
1455 | int ret; | |
1456 | ||
1457 | ctx = nfs4_state_find_open_context(state); | |
1458 | if (IS_ERR(ctx)) | |
91876b13 | 1459 | return -EAGAIN; |
539cd03a | 1460 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1461 | put_nfs_open_context(ctx); |
1462 | return ret; | |
1463 | } | |
1464 | ||
db4f2e63 | 1465 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1466 | { |
be76b5b6 TM |
1467 | switch (err) { |
1468 | default: | |
1469 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1470 | "%d.\n", __func__, err); | |
1471 | case 0: | |
1472 | case -ENOENT: | |
1473 | case -ESTALE: | |
1474 | break; | |
1475 | case -NFS4ERR_BADSESSION: | |
1476 | case -NFS4ERR_BADSLOT: | |
1477 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1478 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1479 | case -NFS4ERR_DEADSESSION: | |
1480 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1481 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1482 | return -EAGAIN; | |
1483 | case -NFS4ERR_STALE_CLIENTID: | |
1484 | case -NFS4ERR_STALE_STATEID: | |
1485 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1486 | case -NFS4ERR_EXPIRED: | |
1487 | /* Don't recall a delegation if it was lost */ | |
1488 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1489 | return -EAGAIN; | |
1490 | case -NFS4ERR_DELEG_REVOKED: | |
1491 | case -NFS4ERR_ADMIN_REVOKED: | |
1492 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1493 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1494 | nfs_inode_find_state_and_recover(state->inode, |
1495 | stateid); | |
1496 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1497 | return 0; |
1498 | case -NFS4ERR_DELAY: | |
1499 | case -NFS4ERR_GRACE: | |
1500 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1501 | ssleep(1); | |
1502 | return -EAGAIN; | |
db4f2e63 TM |
1503 | case -ENOMEM: |
1504 | case -NFS4ERR_DENIED: | |
1505 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1506 | return 0; | |
be76b5b6 | 1507 | } |
1da177e4 LT |
1508 | return err; |
1509 | } | |
1510 | ||
db4f2e63 TM |
1511 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1512 | { | |
1513 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1514 | struct nfs4_opendata *opendata; | |
1515 | int err; | |
1516 | ||
1517 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1518 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1519 | if (IS_ERR(opendata)) | |
1520 | return PTR_ERR(opendata); | |
1521 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1522 | err = nfs4_open_recover(opendata, state); | |
1523 | nfs4_opendata_put(opendata); | |
1524 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1525 | } | |
1526 | ||
cdd4e68b TM |
1527 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1528 | { | |
1529 | struct nfs4_opendata *data = calldata; | |
1530 | ||
1531 | data->rpc_status = task->tk_status; | |
26e976a8 | 1532 | if (data->rpc_status == 0) { |
f597c537 | 1533 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1534 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1535 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1536 | data->rpc_done = 1; |
26e976a8 | 1537 | } |
cdd4e68b TM |
1538 | } |
1539 | ||
1540 | static void nfs4_open_confirm_release(void *calldata) | |
1541 | { | |
1542 | struct nfs4_opendata *data = calldata; | |
1543 | struct nfs4_state *state = NULL; | |
1544 | ||
1545 | /* If this request hasn't been cancelled, do nothing */ | |
1546 | if (data->cancelled == 0) | |
1547 | goto out_free; | |
1548 | /* In case of error, no cleanup! */ | |
3e309914 | 1549 | if (!data->rpc_done) |
cdd4e68b | 1550 | goto out_free; |
cdd4e68b | 1551 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1552 | if (!IS_ERR(state)) |
643168c2 | 1553 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1554 | out_free: |
c6d00e63 | 1555 | nfs4_opendata_put(data); |
cdd4e68b TM |
1556 | } |
1557 | ||
1558 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1559 | .rpc_call_done = nfs4_open_confirm_done, |
1560 | .rpc_release = nfs4_open_confirm_release, | |
1561 | }; | |
1562 | ||
1563 | /* | |
1564 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1565 | */ | |
1566 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1567 | { | |
1568 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1569 | struct rpc_task *task; | |
5138fde0 TM |
1570 | struct rpc_message msg = { |
1571 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1572 | .rpc_argp = &data->c_arg, | |
1573 | .rpc_resp = &data->c_res, | |
1574 | .rpc_cred = data->owner->so_cred, | |
1575 | }; | |
c970aa85 TM |
1576 | struct rpc_task_setup task_setup_data = { |
1577 | .rpc_client = server->client, | |
5138fde0 | 1578 | .rpc_message = &msg, |
c970aa85 TM |
1579 | .callback_ops = &nfs4_open_confirm_ops, |
1580 | .callback_data = data, | |
101070ca | 1581 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1582 | .flags = RPC_TASK_ASYNC, |
1583 | }; | |
1da177e4 LT |
1584 | int status; |
1585 | ||
c6d00e63 | 1586 | kref_get(&data->kref); |
3e309914 TM |
1587 | data->rpc_done = 0; |
1588 | data->rpc_status = 0; | |
5138fde0 | 1589 | data->timestamp = jiffies; |
c970aa85 | 1590 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1591 | if (IS_ERR(task)) |
cdd4e68b | 1592 | return PTR_ERR(task); |
cdd4e68b TM |
1593 | status = nfs4_wait_for_completion_rpc_task(task); |
1594 | if (status != 0) { | |
1595 | data->cancelled = 1; | |
1596 | smp_wmb(); | |
1597 | } else | |
1598 | status = data->rpc_status; | |
e6b3c4db | 1599 | rpc_put_task(task); |
1da177e4 LT |
1600 | return status; |
1601 | } | |
1602 | ||
24ac23ab | 1603 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1604 | { |
24ac23ab TM |
1605 | struct nfs4_opendata *data = calldata; |
1606 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1607 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1608 | |
24ac23ab | 1609 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1610 | goto out_wait; |
aac00a8d TM |
1611 | /* |
1612 | * Check if we still need to send an OPEN call, or if we can use | |
1613 | * a delegation instead. | |
1614 | */ | |
1615 | if (data->state != NULL) { | |
1616 | struct nfs_delegation *delegation; | |
1617 | ||
dc0b027d | 1618 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1619 | goto out_no_action; |
aac00a8d TM |
1620 | rcu_read_lock(); |
1621 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1622 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1623 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1624 | can_open_delegated(delegation, data->o_arg.fmode)) |
1625 | goto unlock_no_action; | |
aac00a8d TM |
1626 | rcu_read_unlock(); |
1627 | } | |
95b72eb0 | 1628 | /* Update client id. */ |
549b19cc | 1629 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1630 | switch (data->o_arg.claim) { |
1631 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1632 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1633 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1634 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1635 | case NFS4_OPEN_CLAIM_FH: |
1636 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1637 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1638 | } | |
26e976a8 | 1639 | data->timestamp = jiffies; |
035168ab | 1640 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1641 | &data->o_arg.seq_args, |
2240a9e2 TM |
1642 | &data->o_res.seq_res, |
1643 | task) != 0) | |
1644 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1645 | |
1646 | /* Set the create mode (note dependency on the session type) */ | |
1647 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1648 | if (data->o_arg.open_flags & O_EXCL) { | |
1649 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1650 | if (nfs4_has_persistent_session(clp)) | |
1651 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1652 | else if (clp->cl_mvops->minor_version > 0) | |
1653 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1654 | } | |
6ee41268 | 1655 | return; |
652f89f6 TM |
1656 | unlock_no_action: |
1657 | rcu_read_unlock(); | |
6ee41268 TM |
1658 | out_no_action: |
1659 | task->tk_action = NULL; | |
c8da19b9 | 1660 | out_wait: |
b75ad4cd | 1661 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1662 | } |
1663 | ||
24ac23ab TM |
1664 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1665 | { | |
1666 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1667 | |
24ac23ab | 1668 | data->rpc_status = task->tk_status; |
d898528c | 1669 | |
14516c3a TM |
1670 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1671 | return; | |
d898528c | 1672 | |
24ac23ab | 1673 | if (task->tk_status == 0) { |
807d66d8 TM |
1674 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1675 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1676 | case S_IFREG: |
1677 | break; | |
1678 | case S_IFLNK: | |
24ac23ab | 1679 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1680 | break; |
1681 | case S_IFDIR: | |
24ac23ab | 1682 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1683 | break; |
1684 | default: | |
24ac23ab | 1685 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1686 | } |
6f926b5b | 1687 | } |
26e976a8 | 1688 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1689 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1690 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1691 | } |
3e309914 | 1692 | data->rpc_done = 1; |
24ac23ab | 1693 | } |
6f926b5b | 1694 | |
24ac23ab TM |
1695 | static void nfs4_open_release(void *calldata) |
1696 | { | |
1697 | struct nfs4_opendata *data = calldata; | |
1698 | struct nfs4_state *state = NULL; | |
1699 | ||
1700 | /* If this request hasn't been cancelled, do nothing */ | |
1701 | if (data->cancelled == 0) | |
1702 | goto out_free; | |
1703 | /* In case of error, no cleanup! */ | |
3e309914 | 1704 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1705 | goto out_free; |
1706 | /* In case we need an open_confirm, no cleanup! */ | |
1707 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1708 | goto out_free; | |
24ac23ab | 1709 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1710 | if (!IS_ERR(state)) |
643168c2 | 1711 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1712 | out_free: |
c6d00e63 | 1713 | nfs4_opendata_put(data); |
24ac23ab TM |
1714 | } |
1715 | ||
1716 | static const struct rpc_call_ops nfs4_open_ops = { | |
1717 | .rpc_call_prepare = nfs4_open_prepare, | |
1718 | .rpc_call_done = nfs4_open_done, | |
1719 | .rpc_release = nfs4_open_release, | |
1720 | }; | |
1721 | ||
b257957e | 1722 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1723 | { |
1724 | struct inode *dir = data->dir->d_inode; | |
1725 | struct nfs_server *server = NFS_SERVER(dir); | |
1726 | struct nfs_openargs *o_arg = &data->o_arg; | |
1727 | struct nfs_openres *o_res = &data->o_res; | |
1728 | struct rpc_task *task; | |
5138fde0 TM |
1729 | struct rpc_message msg = { |
1730 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1731 | .rpc_argp = o_arg, | |
1732 | .rpc_resp = o_res, | |
1733 | .rpc_cred = data->owner->so_cred, | |
1734 | }; | |
c970aa85 TM |
1735 | struct rpc_task_setup task_setup_data = { |
1736 | .rpc_client = server->client, | |
5138fde0 | 1737 | .rpc_message = &msg, |
c970aa85 TM |
1738 | .callback_ops = &nfs4_open_ops, |
1739 | .callback_data = data, | |
101070ca | 1740 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1741 | .flags = RPC_TASK_ASYNC, |
1742 | }; | |
24ac23ab TM |
1743 | int status; |
1744 | ||
9d12b216 | 1745 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1746 | kref_get(&data->kref); |
3e309914 TM |
1747 | data->rpc_done = 0; |
1748 | data->rpc_status = 0; | |
2ced46c2 | 1749 | data->cancelled = 0; |
bdeca1b7 TM |
1750 | data->is_recover = 0; |
1751 | if (isrecover) { | |
8fe72bac | 1752 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1753 | data->is_recover = 1; |
1754 | } | |
c970aa85 | 1755 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1756 | if (IS_ERR(task)) |
1757 | return PTR_ERR(task); | |
1758 | status = nfs4_wait_for_completion_rpc_task(task); | |
1759 | if (status != 0) { | |
1760 | data->cancelled = 1; | |
1761 | smp_wmb(); | |
1762 | } else | |
1763 | status = data->rpc_status; | |
1764 | rpc_put_task(task); | |
1765 | ||
1766 | return status; | |
1767 | } | |
1768 | ||
1769 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1770 | { | |
1771 | struct inode *dir = data->dir->d_inode; | |
1772 | struct nfs_openres *o_res = &data->o_res; | |
1773 | int status; | |
1774 | ||
1775 | status = nfs4_run_open_task(data, 1); | |
1776 | if (status != 0 || !data->rpc_done) | |
1777 | return status; | |
1778 | ||
6926afd1 TM |
1779 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1780 | ||
b257957e AB |
1781 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1782 | status = _nfs4_proc_open_confirm(data); | |
1783 | if (status != 0) | |
1784 | return status; | |
1785 | } | |
1786 | ||
1787 | return status; | |
1788 | } | |
1789 | ||
6168f62c WAA |
1790 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1791 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1792 | struct nfs4_state *state, fmode_t fmode, |
1793 | int openflags) | |
6168f62c WAA |
1794 | { |
1795 | struct nfs_access_entry cache; | |
1796 | u32 mask; | |
1797 | ||
1798 | /* access call failed or for some reason the server doesn't | |
1799 | * support any access modes -- defer access call until later */ | |
1800 | if (opendata->o_res.access_supported == 0) | |
1801 | return 0; | |
1802 | ||
1803 | mask = 0; | |
bbd3a8ee | 1804 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1805 | * write mode bits, but POSIX allows the creating process to write. |
1806 | * use openflags to check for exec, because fmode won't | |
1807 | * always have FMODE_EXEC set when file open for exec. */ | |
1808 | if (openflags & __FMODE_EXEC) { | |
1809 | /* ONLY check for exec rights */ | |
1810 | mask = MAY_EXEC; | |
1811 | } else if (fmode & FMODE_READ) | |
1812 | mask = MAY_READ; | |
6168f62c WAA |
1813 | |
1814 | cache.cred = cred; | |
1815 | cache.jiffies = jiffies; | |
1816 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1817 | nfs_access_add_cache(state->inode, &cache); | |
1818 | ||
bbd3a8ee | 1819 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1820 | return 0; |
1821 | ||
1822 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1823 | nfs4_close_state(state, fmode); | |
998f40b5 | 1824 | return -EACCES; |
6168f62c WAA |
1825 | } |
1826 | ||
b257957e AB |
1827 | /* |
1828 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1829 | */ | |
1830 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1831 | { | |
1832 | struct inode *dir = data->dir->d_inode; | |
1833 | struct nfs_server *server = NFS_SERVER(dir); | |
1834 | struct nfs_openargs *o_arg = &data->o_arg; | |
1835 | struct nfs_openres *o_res = &data->o_res; | |
1836 | int status; | |
1837 | ||
1838 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1839 | if (!data->rpc_done) |
1840 | return status; | |
1841 | if (status != 0) { | |
1842 | if (status == -NFS4ERR_BADNAME && | |
1843 | !(o_arg->open_flags & O_CREAT)) | |
1844 | return -ENOENT; | |
24ac23ab | 1845 | return status; |
08ef7bd3 | 1846 | } |
24ac23ab | 1847 | |
6926afd1 TM |
1848 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1849 | ||
90ff0c54 | 1850 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1851 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1852 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1853 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1854 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1855 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1856 | if (status != 0) |
24ac23ab | 1857 | return status; |
1da177e4 LT |
1858 | } |
1859 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1860 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1861 | return 0; |
1da177e4 LT |
1862 | } |
1863 | ||
d83217c1 AA |
1864 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1865 | { | |
1866 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1867 | } | |
1868 | ||
1da177e4 LT |
1869 | /* |
1870 | * OPEN_EXPIRED: | |
1871 | * reclaim state on the server after a network partition. | |
1872 | * Assumes caller holds the appropriate lock | |
1873 | */ | |
539cd03a | 1874 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1875 | { |
e56e0b78 | 1876 | struct nfs4_opendata *opendata; |
864472e9 | 1877 | int ret; |
1da177e4 | 1878 | |
4a1c0893 | 1879 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1880 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1881 | if (IS_ERR(opendata)) |
1882 | return PTR_ERR(opendata); | |
864472e9 | 1883 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1884 | if (ret == -ESTALE) |
3d4ff43d | 1885 | d_drop(ctx->dentry); |
c6d00e63 | 1886 | nfs4_opendata_put(opendata); |
864472e9 | 1887 | return ret; |
1da177e4 LT |
1888 | } |
1889 | ||
a9ed2e25 | 1890 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1891 | { |
539cd03a | 1892 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1893 | struct nfs4_exception exception = { }; |
1894 | int err; | |
1895 | ||
1896 | do { | |
539cd03a | 1897 | err = _nfs4_open_expired(ctx, state); |
49f9a0fa TM |
1898 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1899 | continue; | |
a9ed2e25 TM |
1900 | switch (err) { |
1901 | default: | |
1902 | goto out; | |
1903 | case -NFS4ERR_GRACE: | |
1904 | case -NFS4ERR_DELAY: | |
1905 | nfs4_handle_exception(server, err, &exception); | |
1906 | err = 0; | |
1907 | } | |
202b50dc | 1908 | } while (exception.retry); |
a9ed2e25 | 1909 | out: |
202b50dc TM |
1910 | return err; |
1911 | } | |
1912 | ||
1da177e4 LT |
1913 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1914 | { | |
1da177e4 | 1915 | struct nfs_open_context *ctx; |
864472e9 | 1916 | int ret; |
1da177e4 | 1917 | |
864472e9 TM |
1918 | ctx = nfs4_state_find_open_context(state); |
1919 | if (IS_ERR(ctx)) | |
91876b13 | 1920 | return -EAGAIN; |
539cd03a | 1921 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1922 | put_nfs_open_context(ctx); |
1923 | return ret; | |
1da177e4 LT |
1924 | } |
1925 | ||
f062eb6c | 1926 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1927 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1928 | { |
f062eb6c | 1929 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 1930 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
1931 | struct nfs_delegation *delegation; |
1932 | struct rpc_cred *cred = NULL; | |
1933 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
1934 | |
1935 | /* If a state reset has been done, test_stateid is unneeded */ | |
1936 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1937 | return; | |
1938 | ||
ab7cb0df TM |
1939 | /* Get the delegation credential for use by test/free_stateid */ |
1940 | rcu_read_lock(); | |
1941 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1942 | if (delegation != NULL && | |
1943 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
1944 | cred = get_rpccred(delegation->cred); | |
1945 | rcu_read_unlock(); | |
1946 | status = nfs41_test_stateid(server, stateid, cred); | |
1947 | } else | |
1948 | rcu_read_unlock(); | |
1949 | ||
3e60ffdd CL |
1950 | if (status != NFS_OK) { |
1951 | /* Free the stateid unless the server explicitly | |
1952 | * informs us the stateid is unrecognized. */ | |
1953 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1954 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 1955 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1956 | |
6938867e BS |
1957 | write_seqlock(&state->seqlock); |
1958 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1959 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1960 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1961 | } | |
ab7cb0df TM |
1962 | |
1963 | if (cred != NULL) | |
1964 | put_rpccred(cred); | |
3e60ffdd CL |
1965 | } |
1966 | ||
1967 | /** | |
1968 | * nfs41_check_open_stateid - possibly free an open stateid | |
1969 | * | |
1970 | * @state: NFSv4 state for an inode | |
1971 | * | |
1972 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1973 | * Otherwise a negative NFS4ERR value is returned. | |
1974 | */ | |
1975 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1976 | { | |
1977 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1978 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 1979 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
1980 | int status; |
1981 | ||
1982 | /* If a state reset has been done, test_stateid is unneeded */ | |
1983 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1984 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1985 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1986 | return -NFS4ERR_BAD_STATEID; | |
1987 | ||
ab7cb0df | 1988 | status = nfs41_test_stateid(server, stateid, cred); |
3e60ffdd CL |
1989 | if (status != NFS_OK) { |
1990 | /* Free the stateid unless the server explicitly | |
1991 | * informs us the stateid is unrecognized. */ | |
1992 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 1993 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
1994 | |
1995 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1996 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1997 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 1998 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
1999 | } |
2000 | return status; | |
2001 | } | |
2002 | ||
2003 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2004 | { | |
eb64cf96 | 2005 | int status; |
b01dd1d8 | 2006 | |
3e60ffdd CL |
2007 | nfs41_clear_delegation_stateid(state); |
2008 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2009 | if (status != NFS_OK) |
2010 | status = nfs4_open_expired(sp, state); | |
2011 | return status; | |
f062eb6c BS |
2012 | } |
2013 | #endif | |
2014 | ||
aa53ed54 JL |
2015 | /* |
2016 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2017 | * fields corresponding to attributes that were used to store the verifier. | |
2018 | * Make sure we clobber those fields in the later setattr call | |
2019 | */ | |
2020 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2021 | { | |
2022 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2023 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2024 | sattr->ia_valid |= ATTR_ATIME; | |
2025 | ||
2026 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2027 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2028 | sattr->ia_valid |= ATTR_MTIME; | |
2029 | } | |
2030 | ||
c21443c2 TM |
2031 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2032 | fmode_t fmode, | |
2033 | int flags, | |
3efb9722 | 2034 | struct nfs_open_context *ctx) |
c21443c2 TM |
2035 | { |
2036 | struct nfs4_state_owner *sp = opendata->owner; | |
2037 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2038 | struct dentry *dentry; |
c21443c2 TM |
2039 | struct nfs4_state *state; |
2040 | unsigned int seq; | |
2041 | int ret; | |
2042 | ||
2043 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2044 | ||
2045 | ret = _nfs4_proc_open(opendata); | |
2046 | if (ret != 0) | |
2047 | goto out; | |
2048 | ||
2049 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2050 | ret = PTR_ERR(state); | |
2051 | if (IS_ERR(state)) | |
2052 | goto out; | |
2053 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2054 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2055 | ||
275bb307 TM |
2056 | dentry = opendata->dentry; |
2057 | if (dentry->d_inode == NULL) { | |
2058 | /* FIXME: Is this d_drop() ever needed? */ | |
2059 | d_drop(dentry); | |
2060 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2061 | if (dentry == NULL) { | |
2062 | dentry = opendata->dentry; | |
2063 | } else if (dentry != ctx->dentry) { | |
2064 | dput(ctx->dentry); | |
2065 | ctx->dentry = dget(dentry); | |
2066 | } | |
2067 | nfs_set_verifier(dentry, | |
2068 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2069 | } | |
2070 | ||
c21443c2 TM |
2071 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2072 | if (ret != 0) | |
2073 | goto out; | |
2074 | ||
3efb9722 | 2075 | ctx->state = state; |
c45ffdd2 TM |
2076 | if (dentry->d_inode == state->inode) { |
2077 | nfs_inode_attach_open_context(ctx); | |
2078 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2079 | nfs4_schedule_stateid_recovery(server, state); | |
2080 | } | |
c21443c2 TM |
2081 | out: |
2082 | return ret; | |
2083 | } | |
2084 | ||
1da177e4 | 2085 | /* |
24ac23ab | 2086 | * Returns a referenced nfs4_state |
1da177e4 | 2087 | */ |
82be417a | 2088 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2089 | struct nfs_open_context *ctx, |
82be417a AA |
2090 | int flags, |
2091 | struct iattr *sattr, | |
959d921f | 2092 | struct nfs4_label *label) |
1da177e4 LT |
2093 | { |
2094 | struct nfs4_state_owner *sp; | |
2095 | struct nfs4_state *state = NULL; | |
2096 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2097 | struct nfs4_opendata *opendata; |
4197a055 TM |
2098 | struct dentry *dentry = ctx->dentry; |
2099 | struct rpc_cred *cred = ctx->cred; | |
2100 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2101 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2102 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2103 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2104 | int status; |
1da177e4 LT |
2105 | |
2106 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2107 | status = -ENOMEM; |
d1e284d5 TM |
2108 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2109 | if (sp == NULL) { | |
1da177e4 LT |
2110 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2111 | goto out_err; | |
2112 | } | |
58d9714a TM |
2113 | status = nfs4_recover_expired_lease(server); |
2114 | if (status != 0) | |
b4454fe1 | 2115 | goto err_put_state_owner; |
82a2c1b7 AV |
2116 | if (dentry->d_inode != NULL) |
2117 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2118 | status = -ENOMEM; |
49f9a0fa TM |
2119 | if (dentry->d_inode) |
2120 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2121 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2122 | label, claim, GFP_KERNEL); |
e56e0b78 | 2123 | if (opendata == NULL) |
95d35cb4 | 2124 | goto err_put_state_owner; |
1da177e4 | 2125 | |
14c43f76 DQ |
2126 | if (label) { |
2127 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2128 | if (IS_ERR(olabel)) { | |
2129 | status = PTR_ERR(olabel); | |
2130 | goto err_opendata_put; | |
2131 | } | |
2132 | } | |
2133 | ||
82be417a AA |
2134 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2135 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2136 | if (!opendata->f_attr.mdsthreshold) | |
14c43f76 | 2137 | goto err_free_label; |
1549210f | 2138 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2139 | } |
82a2c1b7 AV |
2140 | if (dentry->d_inode != NULL) |
2141 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2142 | |
3efb9722 | 2143 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2144 | if (status != 0) |
14c43f76 | 2145 | goto err_free_label; |
3efb9722 | 2146 | state = ctx->state; |
6168f62c | 2147 | |
549b19cc TM |
2148 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2149 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2150 | nfs4_exclusive_attrset(opendata, sattr); |
2151 | ||
2152 | nfs_fattr_init(opendata->o_res.f_attr); | |
2153 | status = nfs4_do_setattr(state->inode, cred, | |
2154 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2155 | state, label, olabel); |
2156 | if (status == 0) { | |
0ab64e0e | 2157 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2158 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2159 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2160 | } |
0ab64e0e | 2161 | } |
82be417a AA |
2162 | |
2163 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2164 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2165 | else | |
2166 | kfree(opendata->f_attr.mdsthreshold); | |
2167 | opendata->f_attr.mdsthreshold = NULL; | |
2168 | ||
14c43f76 DQ |
2169 | nfs4_label_free(olabel); |
2170 | ||
c6d00e63 | 2171 | nfs4_opendata_put(opendata); |
1da177e4 | 2172 | nfs4_put_state_owner(sp); |
1da177e4 | 2173 | return 0; |
14c43f76 DQ |
2174 | err_free_label: |
2175 | nfs4_label_free(olabel); | |
c6d00e63 | 2176 | err_opendata_put: |
82be417a | 2177 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2178 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2179 | err_put_state_owner: |
2180 | nfs4_put_state_owner(sp); | |
1da177e4 | 2181 | out_err: |
1da177e4 LT |
2182 | return status; |
2183 | } | |
2184 | ||
2185 | ||
82be417a | 2186 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2187 | struct nfs_open_context *ctx, |
82be417a AA |
2188 | int flags, |
2189 | struct iattr *sattr, | |
959d921f | 2190 | struct nfs4_label *label) |
1da177e4 | 2191 | { |
49f9a0fa | 2192 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2193 | struct nfs4_exception exception = { }; |
2194 | struct nfs4_state *res; | |
2195 | int status; | |
2196 | ||
2197 | do { | |
959d921f | 2198 | status = _nfs4_do_open(dir, ctx, flags, sattr, label); |
3efb9722 | 2199 | res = ctx->state; |
1da177e4 LT |
2200 | if (status == 0) |
2201 | break; | |
2202 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2203 | * book-keeping w.r.t. state-changing operations | |
2204 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2205 | * It is actually a sign of a bug on the client or on the server. | |
2206 | * | |
2207 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2208 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2209 | * have unhashed the old state_owner for us, and that we can |
2210 | * therefore safely retry using a new one. We should still warn | |
2211 | * the user though... | |
2212 | */ | |
2213 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2214 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2215 | " returned a bad sequence-id error!\n", |
2216 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2217 | exception.retry = 1; |
2218 | continue; | |
2219 | } | |
550f5747 TM |
2220 | /* |
2221 | * BAD_STATEID on OPEN means that the server cancelled our | |
2222 | * state before it received the OPEN_CONFIRM. | |
2223 | * Recover by retrying the request as per the discussion | |
2224 | * on Page 181 of RFC3530. | |
2225 | */ | |
2226 | if (status == -NFS4ERR_BAD_STATEID) { | |
2227 | exception.retry = 1; | |
2228 | continue; | |
2229 | } | |
aac00a8d TM |
2230 | if (status == -EAGAIN) { |
2231 | /* We must have found a delegation */ | |
2232 | exception.retry = 1; | |
2233 | continue; | |
2234 | } | |
49f9a0fa TM |
2235 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2236 | continue; | |
2237 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2238 | status, &exception)); |
2239 | } while (exception.retry); | |
2240 | return res; | |
2241 | } | |
2242 | ||
659bfcd6 TM |
2243 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2244 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2245 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2246 | struct nfs4_label *olabel) | |
1da177e4 | 2247 | { |
3e4f6290 | 2248 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2249 | struct nfs_setattrargs arg = { |
3e4f6290 | 2250 | .fh = NFS_FH(inode), |
1da177e4 LT |
2251 | .iap = sattr, |
2252 | .server = server, | |
2253 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2254 | .label = ilabel, |
1da177e4 LT |
2255 | }; |
2256 | struct nfs_setattrres res = { | |
2257 | .fattr = fattr, | |
1775fd3e | 2258 | .label = olabel, |
1da177e4 LT |
2259 | .server = server, |
2260 | }; | |
2261 | struct rpc_message msg = { | |
659bfcd6 TM |
2262 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2263 | .rpc_argp = &arg, | |
2264 | .rpc_resp = &res, | |
2265 | .rpc_cred = cred, | |
1da177e4 | 2266 | }; |
26e976a8 | 2267 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2268 | fmode_t fmode; |
2269 | bool truncate; | |
65e4308d | 2270 | int status; |
1da177e4 | 2271 | |
aa9c2669 DQ |
2272 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2273 | if (ilabel) | |
2274 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2275 | ||
0e574af1 | 2276 | nfs_fattr_init(fattr); |
1da177e4 | 2277 | |
ee3ae84e TM |
2278 | /* Servers should only apply open mode checks for file size changes */ |
2279 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2280 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2281 | ||
2282 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2283 | /* Use that stateid */ | |
2284 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2285 | struct nfs_lockowner lockowner = { |
2286 | .l_owner = current->files, | |
2287 | .l_pid = current->tgid, | |
2288 | }; | |
4fc8796d | 2289 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2290 | &lockowner); |
08e9eac4 | 2291 | } else |
f597c537 | 2292 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2293 | |
7c513058 | 2294 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2295 | if (status == 0 && state != NULL) |
2296 | renew_lease(server, timestamp); | |
65e4308d | 2297 | return status; |
1da177e4 LT |
2298 | } |
2299 | ||
659bfcd6 TM |
2300 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2301 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2302 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2303 | struct nfs4_label *olabel) | |
1da177e4 | 2304 | { |
3e4f6290 | 2305 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2306 | struct nfs4_exception exception = { |
2307 | .state = state, | |
3114ea7a | 2308 | .inode = inode, |
a1d0b5ee | 2309 | }; |
1da177e4 LT |
2310 | int err; |
2311 | do { | |
1775fd3e | 2312 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
451146be TM |
2313 | switch (err) { |
2314 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2315 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2316 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2317 | "applying open mode checks to " | |
2318 | "a SETATTR that is not " | |
2319 | "changing file size.\n", | |
2320 | server->nfs_client->cl_hostname); | |
2321 | } | |
451146be TM |
2322 | if (state && !(state->state & FMODE_WRITE)) { |
2323 | err = -EBADF; | |
2324 | if (sattr->ia_valid & ATTR_OPEN) | |
2325 | err = -EACCES; | |
2326 | goto out; | |
2327 | } | |
2328 | } | |
2329 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2330 | } while (exception.retry); |
451146be | 2331 | out: |
1da177e4 LT |
2332 | return err; |
2333 | } | |
2334 | ||
2335 | struct nfs4_closedata { | |
2336 | struct inode *inode; | |
2337 | struct nfs4_state *state; | |
2338 | struct nfs_closeargs arg; | |
2339 | struct nfs_closeres res; | |
516a6af6 | 2340 | struct nfs_fattr fattr; |
26e976a8 | 2341 | unsigned long timestamp; |
f7e8917a FI |
2342 | bool roc; |
2343 | u32 roc_barrier; | |
1da177e4 LT |
2344 | }; |
2345 | ||
963d8fe5 | 2346 | static void nfs4_free_closedata(void *data) |
9512135d | 2347 | { |
963d8fe5 TM |
2348 | struct nfs4_closedata *calldata = data; |
2349 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2350 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2351 | |
f7e8917a FI |
2352 | if (calldata->roc) |
2353 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2354 | nfs4_put_open_state(calldata->state); |
2355 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2356 | nfs4_put_state_owner(sp); |
322b2b90 | 2357 | nfs_sb_deactive(sb); |
9512135d TM |
2358 | kfree(calldata); |
2359 | } | |
2360 | ||
88069f77 TM |
2361 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2362 | fmode_t fmode) | |
2363 | { | |
2364 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2365 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2366 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2367 | case FMODE_WRITE: | |
88069f77 | 2368 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2369 | break; |
2370 | case FMODE_READ: | |
88069f77 | 2371 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2372 | break; |
2373 | case 0: | |
2374 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2375 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2376 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2377 | } | |
88069f77 TM |
2378 | spin_unlock(&state->owner->so_lock); |
2379 | } | |
2380 | ||
963d8fe5 | 2381 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2382 | { |
963d8fe5 | 2383 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2384 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2385 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2386 | ||
a3ca5651 | 2387 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2388 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2389 | return; | |
1da177e4 LT |
2390 | /* hmm. we are done with the inode, and in the process of freeing |
2391 | * the state_owner. we keep this around to process errors | |
2392 | */ | |
1da177e4 LT |
2393 | switch (task->tk_status) { |
2394 | case 0: | |
f7e8917a FI |
2395 | if (calldata->roc) |
2396 | pnfs_roc_set_barrier(state->inode, | |
2397 | calldata->roc_barrier); | |
45328c35 | 2398 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2399 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2400 | nfs4_close_clear_stateid_flags(state, |
2401 | calldata->arg.fmode); | |
1da177e4 LT |
2402 | break; |
2403 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2404 | case -NFS4ERR_OLD_STATEID: |
2405 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2406 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2407 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2408 | break; |
1da177e4 | 2409 | default: |
72211dbe TM |
2410 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2411 | rpc_restart_call_prepare(task); | |
1da177e4 | 2412 | } |
72211dbe | 2413 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2414 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2415 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2416 | } |
2417 | ||
4ce70ada | 2418 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2419 | { |
4ce70ada | 2420 | struct nfs4_closedata *calldata = data; |
9512135d | 2421 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2422 | struct inode *inode = calldata->inode; |
88069f77 | 2423 | int call_close = 0; |
9512135d | 2424 | |
a3ca5651 | 2425 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2426 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2427 | goto out_wait; |
003707c7 | 2428 | |
88069f77 TM |
2429 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2430 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2431 | spin_lock(&state->owner->so_lock); |
003707c7 | 2432 | /* Calculate the change in open mode */ |
e7616923 | 2433 | if (state->n_rdwr == 0) { |
003707c7 | 2434 | if (state->n_rdonly == 0) { |
88069f77 TM |
2435 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2436 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2437 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2438 | } |
2439 | if (state->n_wronly == 0) { | |
88069f77 TM |
2440 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2441 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2442 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2443 | } |
e7616923 | 2444 | } |
5d422301 TM |
2445 | if (!nfs4_valid_open_stateid(state)) |
2446 | call_close = 0; | |
4cecb76f | 2447 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2448 | |
2449 | if (!call_close) { | |
963d8fe5 | 2450 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2451 | goto out_no_action; |
9512135d | 2452 | } |
88069f77 | 2453 | |
f7e8917a | 2454 | if (calldata->arg.fmode == 0) { |
88069f77 | 2455 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2456 | if (calldata->roc && |
b9536ad5 AA |
2457 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2458 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2459 | goto out_wait; |
b9536ad5 | 2460 | } |
f7e8917a | 2461 | } |
88069f77 | 2462 | |
516a6af6 | 2463 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2464 | calldata->timestamp = jiffies; |
7fdab069 | 2465 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2466 | &calldata->arg.seq_args, |
2467 | &calldata->res.seq_res, | |
2240a9e2 TM |
2468 | task) != 0) |
2469 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2470 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2471 | return; |
2472 | out_no_action: | |
2473 | task->tk_action = NULL; | |
2474 | out_wait: | |
2475 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2476 | } |
2477 | ||
963d8fe5 | 2478 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2479 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2480 | .rpc_call_done = nfs4_close_done, |
2481 | .rpc_release = nfs4_free_closedata, | |
2482 | }; | |
2483 | ||
1da177e4 LT |
2484 | /* |
2485 | * It is possible for data to be read/written from a mem-mapped file | |
2486 | * after the sys_close call (which hits the vfs layer as a flush). | |
2487 | * This means that we can't safely call nfsv4 close on a file until | |
2488 | * the inode is cleared. This in turn means that we are not good | |
2489 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2490 | * share state even when we are done with one of the three share | |
2491 | * stateid's in the inode. | |
2492 | * | |
2493 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2494 | */ | |
1f7977c1 | 2495 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2496 | { |
4a35bd41 | 2497 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2498 | struct nfs4_closedata *calldata; |
b39e625b TM |
2499 | struct nfs4_state_owner *sp = state->owner; |
2500 | struct rpc_task *task; | |
5138fde0 TM |
2501 | struct rpc_message msg = { |
2502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2503 | .rpc_cred = state->owner->so_cred, | |
2504 | }; | |
c970aa85 TM |
2505 | struct rpc_task_setup task_setup_data = { |
2506 | .rpc_client = server->client, | |
5138fde0 | 2507 | .rpc_message = &msg, |
c970aa85 | 2508 | .callback_ops = &nfs4_close_ops, |
101070ca | 2509 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2510 | .flags = RPC_TASK_ASYNC, |
2511 | }; | |
9512135d | 2512 | int status = -ENOMEM; |
1da177e4 | 2513 | |
8535b2be | 2514 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2515 | if (calldata == NULL) |
9512135d | 2516 | goto out; |
9d12b216 | 2517 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2518 | calldata->inode = state->inode; |
1da177e4 | 2519 | calldata->state = state; |
4a35bd41 | 2520 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2521 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2522 | /* Serialization for the sequence id */ |
8535b2be | 2523 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2524 | if (calldata->arg.seqid == NULL) |
2525 | goto out_free_calldata; | |
dc0b027d | 2526 | calldata->arg.fmode = 0; |
a65318bf | 2527 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2528 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2529 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2530 | calldata->res.server = server; |
1f7977c1 | 2531 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2532 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2533 | |
1174dd1f TM |
2534 | msg.rpc_argp = &calldata->arg; |
2535 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2536 | task_setup_data.callback_data = calldata; |
2537 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2538 | if (IS_ERR(task)) |
2539 | return PTR_ERR(task); | |
a49c3c77 TM |
2540 | status = 0; |
2541 | if (wait) | |
2542 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2543 | rpc_put_task(task); |
a49c3c77 | 2544 | return status; |
9512135d TM |
2545 | out_free_calldata: |
2546 | kfree(calldata); | |
2547 | out: | |
b39e625b TM |
2548 | nfs4_put_open_state(state); |
2549 | nfs4_put_state_owner(sp); | |
9512135d | 2550 | return status; |
1da177e4 LT |
2551 | } |
2552 | ||
2b484297 | 2553 | static struct inode * |
cd9a1c0e | 2554 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2555 | { |
1da177e4 | 2556 | struct nfs4_state *state; |
aa9c2669 DQ |
2557 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2558 | ||
2559 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2560 | |
565277f6 | 2561 | /* Protect against concurrent sillydeletes */ |
959d921f | 2562 | state = nfs4_do_open(dir, ctx, open_flags, attr, label); |
aa9c2669 DQ |
2563 | |
2564 | nfs4_label_release_security(label); | |
2565 | ||
f46e0bd3 TM |
2566 | if (IS_ERR(state)) |
2567 | return ERR_CAST(state); | |
275bb307 | 2568 | return state->inode; |
1da177e4 LT |
2569 | } |
2570 | ||
1185a552 | 2571 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2572 | { |
2573 | if (ctx->state == NULL) | |
2574 | return; | |
2575 | if (is_sync) | |
643168c2 | 2576 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2577 | else |
643168c2 | 2578 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2579 | } |
1da177e4 LT |
2580 | |
2581 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2582 | { | |
43652ad5 BH |
2583 | struct nfs4_server_caps_arg args = { |
2584 | .fhandle = fhandle, | |
2585 | }; | |
1da177e4 LT |
2586 | struct nfs4_server_caps_res res = {}; |
2587 | struct rpc_message msg = { | |
2588 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2589 | .rpc_argp = &args, |
1da177e4 LT |
2590 | .rpc_resp = &res, |
2591 | }; | |
2592 | int status; | |
2593 | ||
7c513058 | 2594 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2595 | if (status == 0) { |
2596 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2597 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2598 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2599 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2600 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2601 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2602 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2603 | server->caps |= NFS_CAP_ACLS; | |
2604 | if (res.has_links != 0) | |
2605 | server->caps |= NFS_CAP_HARDLINKS; | |
2606 | if (res.has_symlinks != 0) | |
2607 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2608 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2609 | server->caps |= NFS_CAP_FILEID; | |
2610 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2611 | server->caps |= NFS_CAP_MODE; | |
2612 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2613 | server->caps |= NFS_CAP_NLINK; | |
2614 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2615 | server->caps |= NFS_CAP_OWNER; | |
2616 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2617 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2618 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2619 | server->caps |= NFS_CAP_ATIME; | |
2620 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2621 | server->caps |= NFS_CAP_CTIME; | |
2622 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2623 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2624 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2625 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2626 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2627 | #endif | |
2628 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2629 | sizeof(server->attr_bitmask)); | |
62ab460c | 2630 | |
aa9c2669 DQ |
2631 | if (server->caps & NFS_CAP_SECURITY_LABEL) { |
2632 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2633 | res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2634 | } | |
a65318bf TM |
2635 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2636 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2637 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2638 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2639 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2640 | } |
cccef3b9 | 2641 | |
1da177e4 LT |
2642 | return status; |
2643 | } | |
2644 | ||
55a97593 | 2645 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2646 | { |
2647 | struct nfs4_exception exception = { }; | |
2648 | int err; | |
2649 | do { | |
2650 | err = nfs4_handle_exception(server, | |
2651 | _nfs4_server_capabilities(server, fhandle), | |
2652 | &exception); | |
2653 | } while (exception.retry); | |
2654 | return err; | |
2655 | } | |
2656 | ||
2657 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2658 | struct nfs_fsinfo *info) | |
2659 | { | |
aa9c2669 | 2660 | u32 bitmask[3]; |
1da177e4 | 2661 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2662 | .bitmask = bitmask, |
1da177e4 LT |
2663 | }; |
2664 | struct nfs4_lookup_res res = { | |
2665 | .server = server, | |
0e574af1 | 2666 | .fattr = info->fattr, |
1da177e4 LT |
2667 | .fh = fhandle, |
2668 | }; | |
2669 | struct rpc_message msg = { | |
2670 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2671 | .rpc_argp = &args, | |
2672 | .rpc_resp = &res, | |
2673 | }; | |
008f55d0 | 2674 | |
aa9c2669 DQ |
2675 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2676 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2677 | /* | |
2678 | * Process the label in the upcoming getfattr | |
2679 | */ | |
2680 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2681 | ||
0e574af1 | 2682 | nfs_fattr_init(info->fattr); |
7c513058 | 2683 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2684 | } |
2685 | ||
2686 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2687 | struct nfs_fsinfo *info) | |
2688 | { | |
2689 | struct nfs4_exception exception = { }; | |
2690 | int err; | |
2691 | do { | |
fb8a5ba8 BS |
2692 | err = _nfs4_lookup_root(server, fhandle, info); |
2693 | switch (err) { | |
2694 | case 0: | |
2695 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2696 | goto out; |
fb8a5ba8 BS |
2697 | default: |
2698 | err = nfs4_handle_exception(server, err, &exception); | |
2699 | } | |
1da177e4 | 2700 | } while (exception.retry); |
05e9cfb4 | 2701 | out: |
1da177e4 LT |
2702 | return err; |
2703 | } | |
2704 | ||
8f70e95f BS |
2705 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2706 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2707 | { | |
2708 | struct rpc_auth *auth; | |
2709 | int ret; | |
2710 | ||
2711 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2712 | if (IS_ERR(auth)) { |
75bc8821 | 2713 | ret = -EACCES; |
8f70e95f BS |
2714 | goto out; |
2715 | } | |
2716 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2717 | out: |
2718 | return ret; | |
2719 | } | |
2720 | ||
9a744ba3 CL |
2721 | /* |
2722 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2723 | * | |
2724 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2725 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2726 | * | |
2727 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2728 | * negative errno value. | |
2729 | */ | |
801a16dc | 2730 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2731 | struct nfs_fsinfo *info) |
1da177e4 | 2732 | { |
9a744ba3 CL |
2733 | /* Per 3530bis 15.33.5 */ |
2734 | static const rpc_authflavor_t flav_array[] = { | |
2735 | RPC_AUTH_GSS_KRB5P, | |
2736 | RPC_AUTH_GSS_KRB5I, | |
2737 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2738 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2739 | RPC_AUTH_NULL, |
2740 | }; | |
2741 | int status = -EPERM; | |
2742 | size_t i; | |
6a1a1e34 | 2743 | |
9a744ba3 | 2744 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2745 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2746 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2747 | continue; |
2748 | break; | |
8f70e95f | 2749 | } |
9a744ba3 | 2750 | |
fb8a5ba8 BS |
2751 | /* |
2752 | * -EACCESS could mean that the user doesn't have correct permissions | |
2753 | * to access the mount. It could also mean that we tried to mount | |
2754 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2755 | * existing mount programs don't handle -EACCES very well so it should | |
2756 | * be mapped to -EPERM instead. | |
2757 | */ | |
2758 | if (status == -EACCES) | |
2759 | status = -EPERM; | |
801a16dc BS |
2760 | return status; |
2761 | } | |
2762 | ||
2ed4b95b CL |
2763 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2764 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2765 | { | |
2766 | int mv = server->nfs_client->cl_minorversion; | |
2767 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2768 | } | |
2769 | ||
2770 | /** | |
2771 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2772 | * @server: initialized nfs_server handle | |
2773 | * @fhandle: we fill in the pseudo-fs root file handle | |
2774 | * @info: we fill in an FSINFO struct | |
2775 | * | |
2776 | * Returns zero on success, or a negative errno. | |
801a16dc | 2777 | */ |
3028eb2b BS |
2778 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2779 | struct nfs_fsinfo *info) | |
801a16dc | 2780 | { |
2ed4b95b CL |
2781 | int status; |
2782 | ||
2783 | status = nfs4_lookup_root(server, fhandle, info); | |
2784 | if ((status == -NFS4ERR_WRONGSEC) && | |
2785 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2786 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2787 | ||
1da177e4 LT |
2788 | if (status == 0) |
2789 | status = nfs4_server_capabilities(server, fhandle); | |
2790 | if (status == 0) | |
2791 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2792 | |
c12e87f4 | 2793 | return nfs4_map_errors(status); |
1da177e4 LT |
2794 | } |
2795 | ||
bae36241 BS |
2796 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2797 | struct nfs_fsinfo *info) | |
2798 | { | |
2799 | int error; | |
2800 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2801 | struct nfs4_label *label = NULL; |
bae36241 BS |
2802 | |
2803 | error = nfs4_server_capabilities(server, mntfh); | |
2804 | if (error < 0) { | |
2805 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2806 | return error; | |
2807 | } | |
2808 | ||
14c43f76 DQ |
2809 | label = nfs4_label_alloc(server, GFP_KERNEL); |
2810 | if (IS_ERR(label)) | |
2811 | return PTR_ERR(label); | |
2812 | ||
1775fd3e | 2813 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2814 | if (error < 0) { |
2815 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 2816 | goto err_free_label; |
bae36241 BS |
2817 | } |
2818 | ||
2819 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2820 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2821 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2822 | ||
14c43f76 DQ |
2823 | err_free_label: |
2824 | nfs4_label_free(label); | |
2825 | ||
bae36241 BS |
2826 | return error; |
2827 | } | |
2828 | ||
6b97fd3d MN |
2829 | /* |
2830 | * Get locations and (maybe) other attributes of a referral. | |
2831 | * Note that we'll actually follow the referral later when | |
2832 | * we detect fsid mismatch in inode revalidation | |
2833 | */ | |
f05d147f BS |
2834 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2835 | const struct qstr *name, struct nfs_fattr *fattr, | |
2836 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2837 | { |
2838 | int status = -ENOMEM; | |
2839 | struct page *page = NULL; | |
2840 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2841 | |
2842 | page = alloc_page(GFP_KERNEL); | |
2843 | if (page == NULL) | |
2844 | goto out; | |
2845 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2846 | if (locations == NULL) | |
2847 | goto out; | |
2848 | ||
f05d147f | 2849 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2850 | if (status != 0) |
2851 | goto out; | |
2852 | /* Make sure server returned a different fsid for the referral */ | |
2853 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2854 | dprintk("%s: server did not return a different fsid for" |
2855 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2856 | status = -EIO; |
2857 | goto out; | |
2858 | } | |
533eb461 AA |
2859 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2860 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2861 | |
533eb461 | 2862 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2863 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2864 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2865 | out: | |
2866 | if (page) | |
2867 | __free_page(page); | |
5d7ca35a | 2868 | kfree(locations); |
6b97fd3d MN |
2869 | return status; |
2870 | } | |
2871 | ||
1775fd3e DQ |
2872 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2873 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2874 | { |
2875 | struct nfs4_getattr_arg args = { | |
2876 | .fh = fhandle, | |
2877 | .bitmask = server->attr_bitmask, | |
2878 | }; | |
2879 | struct nfs4_getattr_res res = { | |
2880 | .fattr = fattr, | |
1775fd3e | 2881 | .label = label, |
1da177e4 LT |
2882 | .server = server, |
2883 | }; | |
2884 | struct rpc_message msg = { | |
2885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2886 | .rpc_argp = &args, | |
2887 | .rpc_resp = &res, | |
2888 | }; | |
aa9c2669 DQ |
2889 | |
2890 | args.bitmask = nfs4_bitmask(server, label); | |
2891 | ||
0e574af1 | 2892 | nfs_fattr_init(fattr); |
7c513058 | 2893 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2894 | } |
2895 | ||
1775fd3e DQ |
2896 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2897 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2898 | { |
2899 | struct nfs4_exception exception = { }; | |
2900 | int err; | |
2901 | do { | |
2902 | err = nfs4_handle_exception(server, | |
1775fd3e | 2903 | _nfs4_proc_getattr(server, fhandle, fattr, label), |
1da177e4 LT |
2904 | &exception); |
2905 | } while (exception.retry); | |
2906 | return err; | |
2907 | } | |
2908 | ||
2909 | /* | |
2910 | * The file is not closed if it is opened due to the a request to change | |
2911 | * the size of the file. The open call will not be needed once the | |
2912 | * VFS layer lookup-intents are implemented. | |
2913 | * | |
2914 | * Close is called when the inode is destroyed. | |
2915 | * If we haven't opened the file for O_WRONLY, we | |
2916 | * need to in the size_change case to obtain a stateid. | |
2917 | * | |
2918 | * Got race? | |
2919 | * Because OPEN is always done by name in nfsv4, it is | |
2920 | * possible that we opened a different file by the same | |
2921 | * name. We can recognize this race condition, but we | |
2922 | * can't do anything about it besides returning an error. | |
2923 | * | |
2924 | * This will be fixed with VFS changes (lookup-intent). | |
2925 | */ | |
2926 | static int | |
2927 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2928 | struct iattr *sattr) | |
2929 | { | |
08e9eac4 | 2930 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2931 | struct rpc_cred *cred = NULL; |
d530838b | 2932 | struct nfs4_state *state = NULL; |
14c43f76 | 2933 | struct nfs4_label *label = NULL; |
1da177e4 LT |
2934 | int status; |
2935 | ||
8a1636c4 | 2936 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2937 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2938 | |
0e574af1 | 2939 | nfs_fattr_init(fattr); |
1da177e4 | 2940 | |
2669940d AA |
2941 | /* Deal with open(O_TRUNC) */ |
2942 | if (sattr->ia_valid & ATTR_OPEN) | |
2943 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2944 | ||
2945 | /* Optimization: if the end result is no change, don't RPC */ | |
2946 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2947 | return 0; | |
2948 | ||
d530838b | 2949 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2950 | if (sattr->ia_valid & ATTR_FILE) { |
2951 | struct nfs_open_context *ctx; | |
2952 | ||
2953 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2954 | if (ctx) { |
2955 | cred = ctx->cred; | |
2956 | state = ctx->state; | |
2957 | } | |
659bfcd6 | 2958 | } |
08e9eac4 | 2959 | |
14c43f76 DQ |
2960 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
2961 | if (IS_ERR(label)) | |
2962 | return PTR_ERR(label); | |
2963 | ||
2964 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 2965 | if (status == 0) { |
65e4308d | 2966 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
2967 | nfs_setsecurity(inode, fattr, label); |
2968 | } | |
14c43f76 | 2969 | nfs4_label_free(label); |
1da177e4 LT |
2970 | return status; |
2971 | } | |
2972 | ||
0c2e53f1 TM |
2973 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2974 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 2975 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 2976 | { |
0c2e53f1 | 2977 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2978 | int status; |
2979 | struct nfs4_lookup_arg args = { | |
2980 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2981 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2982 | .name = name, |
2983 | }; | |
2984 | struct nfs4_lookup_res res = { | |
2985 | .server = server, | |
2986 | .fattr = fattr, | |
aa9c2669 | 2987 | .label = label, |
2b3de441 DH |
2988 | .fh = fhandle, |
2989 | }; | |
2990 | struct rpc_message msg = { | |
2991 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2992 | .rpc_argp = &args, | |
2993 | .rpc_resp = &res, | |
2994 | }; | |
2995 | ||
aa9c2669 DQ |
2996 | args.bitmask = nfs4_bitmask(server, label); |
2997 | ||
2b3de441 DH |
2998 | nfs_fattr_init(fattr); |
2999 | ||
1da177e4 | 3000 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3001 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3002 | dprintk("NFS reply lookup: %d\n", status); |
3003 | return status; | |
3004 | } | |
3005 | ||
72de53ec | 3006 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3007 | { |
7ebb9315 | 3008 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3009 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3010 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3011 | fattr->nlink = 2; | |
3012 | } | |
3013 | ||
72de53ec BS |
3014 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3015 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3016 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3017 | { |
3018 | struct nfs4_exception exception = { }; | |
72de53ec | 3019 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3020 | int err; |
3021 | do { | |
1775fd3e | 3022 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
72de53ec | 3023 | switch (err) { |
08ef7bd3 | 3024 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3025 | err = -ENOENT; |
3026 | goto out; | |
0c2e53f1 | 3027 | case -NFS4ERR_MOVED: |
f05d147f | 3028 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3029 | goto out; |
0c2e53f1 | 3030 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3031 | err = -EPERM; |
3032 | if (client != *clnt) | |
3033 | goto out; | |
3034 | ||
3035 | client = nfs4_create_sec_client(client, dir, name); | |
3036 | if (IS_ERR(client)) | |
3037 | return PTR_ERR(client); | |
3038 | ||
3039 | exception.retry = 1; | |
3040 | break; | |
3041 | default: | |
3042 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3043 | } |
1da177e4 | 3044 | } while (exception.retry); |
72de53ec BS |
3045 | |
3046 | out: | |
3047 | if (err == 0) | |
3048 | *clnt = client; | |
3049 | else if (client != *clnt) | |
3050 | rpc_shutdown_client(client); | |
3051 | ||
1da177e4 LT |
3052 | return err; |
3053 | } | |
3054 | ||
80a16b21 | 3055 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3056 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3057 | struct nfs4_label *label) | |
72de53ec BS |
3058 | { |
3059 | int status; | |
3060 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3061 | ||
1775fd3e | 3062 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3063 | if (client != NFS_CLIENT(dir)) { |
3064 | rpc_shutdown_client(client); | |
3065 | nfs_fixup_secinfo_attributes(fattr); | |
3066 | } | |
3067 | return status; | |
3068 | } | |
3069 | ||
f05d147f BS |
3070 | struct rpc_clnt * |
3071 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3072 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3073 | { | |
3074 | int status; | |
3075 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
3076 | ||
1775fd3e | 3077 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
f05d147f BS |
3078 | if (status < 0) { |
3079 | rpc_shutdown_client(client); | |
3080 | return ERR_PTR(status); | |
3081 | } | |
3082 | return client; | |
3083 | } | |
3084 | ||
1da177e4 LT |
3085 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3086 | { | |
76b32999 | 3087 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3088 | struct nfs4_accessargs args = { |
3089 | .fh = NFS_FH(inode), | |
a4980e78 | 3090 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3091 | }; |
3092 | struct nfs4_accessres res = { | |
3093 | .server = server, | |
1da177e4 | 3094 | }; |
1da177e4 LT |
3095 | struct rpc_message msg = { |
3096 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3097 | .rpc_argp = &args, | |
3098 | .rpc_resp = &res, | |
3099 | .rpc_cred = entry->cred, | |
3100 | }; | |
3101 | int mode = entry->mask; | |
aa9c2669 | 3102 | int status = 0; |
1da177e4 LT |
3103 | |
3104 | /* | |
3105 | * Determine which access bits we want to ask for... | |
3106 | */ | |
3107 | if (mode & MAY_READ) | |
3108 | args.access |= NFS4_ACCESS_READ; | |
3109 | if (S_ISDIR(inode->i_mode)) { | |
3110 | if (mode & MAY_WRITE) | |
3111 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3112 | if (mode & MAY_EXEC) | |
3113 | args.access |= NFS4_ACCESS_LOOKUP; | |
3114 | } else { | |
3115 | if (mode & MAY_WRITE) | |
3116 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3117 | if (mode & MAY_EXEC) | |
3118 | args.access |= NFS4_ACCESS_EXECUTE; | |
3119 | } | |
c407d41a TM |
3120 | |
3121 | res.fattr = nfs_alloc_fattr(); | |
3122 | if (res.fattr == NULL) | |
3123 | return -ENOMEM; | |
3124 | ||
7c513058 | 3125 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3126 | if (!status) { |
6168f62c | 3127 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3128 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3129 | } |
c407d41a | 3130 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3131 | return status; |
3132 | } | |
3133 | ||
3134 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3135 | { | |
3136 | struct nfs4_exception exception = { }; | |
3137 | int err; | |
3138 | do { | |
3139 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3140 | _nfs4_proc_access(inode, entry), | |
3141 | &exception); | |
3142 | } while (exception.retry); | |
3143 | return err; | |
3144 | } | |
3145 | ||
3146 | /* | |
3147 | * TODO: For the time being, we don't try to get any attributes | |
3148 | * along with any of the zero-copy operations READ, READDIR, | |
3149 | * READLINK, WRITE. | |
3150 | * | |
3151 | * In the case of the first three, we want to put the GETATTR | |
3152 | * after the read-type operation -- this is because it is hard | |
3153 | * to predict the length of a GETATTR response in v4, and thus | |
3154 | * align the READ data correctly. This means that the GETATTR | |
3155 | * may end up partially falling into the page cache, and we should | |
3156 | * shift it into the 'tail' of the xdr_buf before processing. | |
3157 | * To do this efficiently, we need to know the total length | |
3158 | * of data received, which doesn't seem to be available outside | |
3159 | * of the RPC layer. | |
3160 | * | |
3161 | * In the case of WRITE, we also want to put the GETATTR after | |
3162 | * the operation -- in this case because we want to make sure | |
140150db | 3163 | * we get the post-operation mtime and size. |
1da177e4 LT |
3164 | * |
3165 | * Both of these changes to the XDR layer would in fact be quite | |
3166 | * minor, but I decided to leave them for a subsequent patch. | |
3167 | */ | |
3168 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3169 | unsigned int pgbase, unsigned int pglen) | |
3170 | { | |
3171 | struct nfs4_readlink args = { | |
3172 | .fh = NFS_FH(inode), | |
3173 | .pgbase = pgbase, | |
3174 | .pglen = pglen, | |
3175 | .pages = &page, | |
3176 | }; | |
f50c7000 | 3177 | struct nfs4_readlink_res res; |
1da177e4 LT |
3178 | struct rpc_message msg = { |
3179 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3180 | .rpc_argp = &args, | |
f50c7000 | 3181 | .rpc_resp = &res, |
1da177e4 LT |
3182 | }; |
3183 | ||
7c513058 | 3184 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3185 | } |
3186 | ||
3187 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3188 | unsigned int pgbase, unsigned int pglen) | |
3189 | { | |
3190 | struct nfs4_exception exception = { }; | |
3191 | int err; | |
3192 | do { | |
3193 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3194 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
3195 | &exception); | |
3196 | } while (exception.retry); | |
3197 | return err; | |
3198 | } | |
3199 | ||
1da177e4 | 3200 | /* |
8867fe58 | 3201 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3202 | */ |
1da177e4 LT |
3203 | static int |
3204 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3205 | int flags) |
1da177e4 | 3206 | { |
aa9c2669 | 3207 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3208 | struct nfs_open_context *ctx; |
1da177e4 | 3209 | struct nfs4_state *state; |
1da177e4 LT |
3210 | int status = 0; |
3211 | ||
8867fe58 MS |
3212 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3213 | if (IS_ERR(ctx)) | |
3214 | return PTR_ERR(ctx); | |
3215 | ||
aa9c2669 DQ |
3216 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3217 | ||
a8a5da99 | 3218 | sattr->ia_mode &= ~current_umask(); |
959d921f | 3219 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel); |
1da177e4 LT |
3220 | if (IS_ERR(state)) { |
3221 | status = PTR_ERR(state); | |
c0204fd2 | 3222 | goto out; |
1da177e4 | 3223 | } |
1da177e4 | 3224 | out: |
aa9c2669 | 3225 | nfs4_label_release_security(ilabel); |
8867fe58 | 3226 | put_nfs_open_context(ctx); |
1da177e4 LT |
3227 | return status; |
3228 | } | |
3229 | ||
3230 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3231 | { | |
16e42959 | 3232 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3233 | struct nfs_removeargs args = { |
1da177e4 | 3234 | .fh = NFS_FH(dir), |
26fe5750 | 3235 | .name = *name, |
16e42959 | 3236 | }; |
4fdc17b2 | 3237 | struct nfs_removeres res = { |
16e42959 | 3238 | .server = server, |
1da177e4 | 3239 | }; |
1da177e4 | 3240 | struct rpc_message msg = { |
4fdc17b2 TM |
3241 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3242 | .rpc_argp = &args, | |
3243 | .rpc_resp = &res, | |
1da177e4 | 3244 | }; |
778d2817 | 3245 | int status; |
1da177e4 | 3246 | |
7c513058 | 3247 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3248 | if (status == 0) |
16e42959 | 3249 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3250 | return status; |
3251 | } | |
3252 | ||
3253 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3254 | { | |
3255 | struct nfs4_exception exception = { }; | |
3256 | int err; | |
3257 | do { | |
3258 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3259 | _nfs4_proc_remove(dir, name), | |
3260 | &exception); | |
3261 | } while (exception.retry); | |
3262 | return err; | |
3263 | } | |
3264 | ||
e4eff1a6 | 3265 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3266 | { |
e4eff1a6 TM |
3267 | struct nfs_server *server = NFS_SERVER(dir); |
3268 | struct nfs_removeargs *args = msg->rpc_argp; | |
3269 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3270 | |
e4eff1a6 | 3271 | res->server = server; |
1da177e4 | 3272 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3273 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3274 | |
3275 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3276 | } |
3277 | ||
34e137cc BS |
3278 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3279 | { | |
d9afbd1b TM |
3280 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3281 | &data->args.seq_args, | |
3282 | &data->res.seq_res, | |
3283 | task); | |
1da177e4 LT |
3284 | } |
3285 | ||
e4eff1a6 | 3286 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3287 | { |
e4eff1a6 TM |
3288 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3289 | ||
14516c3a TM |
3290 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3291 | return 0; | |
9e33bed5 | 3292 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3293 | return 0; |
3294 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3295 | return 1; |
1da177e4 LT |
3296 | } |
3297 | ||
d3d4152a JL |
3298 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3299 | { | |
3300 | struct nfs_server *server = NFS_SERVER(dir); | |
3301 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3302 | struct nfs_renameres *res = msg->rpc_resp; | |
3303 | ||
3304 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3305 | res->server = server; |
9d12b216 | 3306 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3307 | } |
3308 | ||
c6bfa1a1 BS |
3309 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3310 | { | |
d9afbd1b TM |
3311 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3312 | &data->args.seq_args, | |
3313 | &data->res.seq_res, | |
3314 | task); | |
d3d4152a JL |
3315 | } |
3316 | ||
3317 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3318 | struct inode *new_dir) | |
3319 | { | |
3320 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3321 | ||
3322 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3323 | return 0; | |
3324 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3325 | return 0; | |
3326 | ||
3327 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3328 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3329 | return 1; |
3330 | } | |
3331 | ||
1da177e4 LT |
3332 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3333 | struct inode *new_dir, struct qstr *new_name) | |
3334 | { | |
6caf2c82 | 3335 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3336 | struct nfs_renameargs arg = { |
1da177e4 LT |
3337 | .old_dir = NFS_FH(old_dir), |
3338 | .new_dir = NFS_FH(new_dir), | |
3339 | .old_name = old_name, | |
3340 | .new_name = new_name, | |
6caf2c82 | 3341 | }; |
e8582a8b | 3342 | struct nfs_renameres res = { |
6caf2c82 | 3343 | .server = server, |
1da177e4 | 3344 | }; |
1da177e4 LT |
3345 | struct rpc_message msg = { |
3346 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3347 | .rpc_argp = &arg, | |
3348 | .rpc_resp = &res, | |
3349 | }; | |
011fff72 | 3350 | int status = -ENOMEM; |
14c43f76 | 3351 | |
7c513058 | 3352 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3353 | if (!status) { |
3354 | update_changeattr(old_dir, &res.old_cinfo); | |
3355 | update_changeattr(new_dir, &res.new_cinfo); | |
3356 | } | |
3357 | return status; | |
3358 | } | |
3359 | ||
3360 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3361 | struct inode *new_dir, struct qstr *new_name) | |
3362 | { | |
3363 | struct nfs4_exception exception = { }; | |
3364 | int err; | |
3365 | do { | |
3366 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3367 | _nfs4_proc_rename(old_dir, old_name, | |
3368 | new_dir, new_name), | |
3369 | &exception); | |
3370 | } while (exception.retry); | |
3371 | return err; | |
3372 | } | |
3373 | ||
3374 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3375 | { | |
91ba2eee | 3376 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3377 | struct nfs4_link_arg arg = { |
3378 | .fh = NFS_FH(inode), | |
3379 | .dir_fh = NFS_FH(dir), | |
3380 | .name = name, | |
91ba2eee TM |
3381 | .bitmask = server->attr_bitmask, |
3382 | }; | |
91ba2eee TM |
3383 | struct nfs4_link_res res = { |
3384 | .server = server, | |
1775fd3e | 3385 | .label = NULL, |
1da177e4 | 3386 | }; |
1da177e4 LT |
3387 | struct rpc_message msg = { |
3388 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3389 | .rpc_argp = &arg, | |
91ba2eee | 3390 | .rpc_resp = &res, |
1da177e4 | 3391 | }; |
136f2627 TM |
3392 | int status = -ENOMEM; |
3393 | ||
3394 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3395 | if (res.fattr == NULL) |
136f2627 | 3396 | goto out; |
1da177e4 | 3397 | |
14c43f76 DQ |
3398 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3399 | if (IS_ERR(res.label)) { | |
3400 | status = PTR_ERR(res.label); | |
3401 | goto out; | |
3402 | } | |
aa9c2669 | 3403 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3404 | |
7c513058 | 3405 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3406 | if (!status) { |
3407 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3408 | status = nfs_post_op_update_inode(inode, res.fattr); |
3409 | if (!status) | |
3410 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3411 | } |
14c43f76 DQ |
3412 | |
3413 | ||
3414 | nfs4_label_free(res.label); | |
3415 | ||
136f2627 | 3416 | out: |
136f2627 | 3417 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3418 | return status; |
3419 | } | |
3420 | ||
3421 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3422 | { | |
3423 | struct nfs4_exception exception = { }; | |
3424 | int err; | |
3425 | do { | |
3426 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3427 | _nfs4_proc_link(inode, dir, name), | |
3428 | &exception); | |
3429 | } while (exception.retry); | |
3430 | return err; | |
3431 | } | |
3432 | ||
57dc9a57 TM |
3433 | struct nfs4_createdata { |
3434 | struct rpc_message msg; | |
3435 | struct nfs4_create_arg arg; | |
3436 | struct nfs4_create_res res; | |
3437 | struct nfs_fh fh; | |
3438 | struct nfs_fattr fattr; | |
1775fd3e | 3439 | struct nfs4_label *label; |
57dc9a57 TM |
3440 | }; |
3441 | ||
3442 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3443 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3444 | { | |
3445 | struct nfs4_createdata *data; | |
3446 | ||
3447 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3448 | if (data != NULL) { | |
3449 | struct nfs_server *server = NFS_SERVER(dir); | |
3450 | ||
14c43f76 DQ |
3451 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3452 | if (IS_ERR(data->label)) | |
3453 | goto out_free; | |
3454 | ||
57dc9a57 TM |
3455 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3456 | data->msg.rpc_argp = &data->arg; | |
3457 | data->msg.rpc_resp = &data->res; | |
3458 | data->arg.dir_fh = NFS_FH(dir); | |
3459 | data->arg.server = server; | |
3460 | data->arg.name = name; | |
3461 | data->arg.attrs = sattr; | |
3462 | data->arg.ftype = ftype; | |
aa9c2669 | 3463 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3464 | data->res.server = server; |
3465 | data->res.fh = &data->fh; | |
3466 | data->res.fattr = &data->fattr; | |
1775fd3e | 3467 | data->res.label = data->label; |
57dc9a57 | 3468 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3469 | } |
3470 | return data; | |
14c43f76 DQ |
3471 | out_free: |
3472 | kfree(data); | |
3473 | return NULL; | |
57dc9a57 TM |
3474 | } |
3475 | ||
3476 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3477 | { | |
7c513058 | 3478 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3479 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3480 | if (status == 0) { |
3481 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3482 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3483 | } |
3484 | return status; | |
3485 | } | |
3486 | ||
3487 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3488 | { | |
14c43f76 | 3489 | nfs4_label_free(data->label); |
57dc9a57 TM |
3490 | kfree(data); |
3491 | } | |
3492 | ||
4f390c15 | 3493 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3494 | struct page *page, unsigned int len, struct iattr *sattr, |
3495 | struct nfs4_label *label) | |
1da177e4 | 3496 | { |
57dc9a57 TM |
3497 | struct nfs4_createdata *data; |
3498 | int status = -ENAMETOOLONG; | |
1da177e4 | 3499 | |
94a6d753 | 3500 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3501 | goto out; |
4f390c15 | 3502 | |
57dc9a57 TM |
3503 | status = -ENOMEM; |
3504 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3505 | if (data == NULL) | |
3506 | goto out; | |
3507 | ||
3508 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3509 | data->arg.u.symlink.pages = &page; | |
3510 | data->arg.u.symlink.len = len; | |
1775fd3e | 3511 | data->arg.label = label; |
1da177e4 | 3512 | |
57dc9a57 TM |
3513 | status = nfs4_do_create(dir, dentry, data); |
3514 | ||
3515 | nfs4_free_createdata(data); | |
3516 | out: | |
1da177e4 LT |
3517 | return status; |
3518 | } | |
3519 | ||
4f390c15 | 3520 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3521 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3522 | { |
3523 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3524 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3525 | int err; |
aa9c2669 DQ |
3526 | |
3527 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3528 | ||
1da177e4 LT |
3529 | do { |
3530 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 | 3531 | _nfs4_proc_symlink(dir, dentry, page, |
1775fd3e | 3532 | len, sattr, label), |
1da177e4 LT |
3533 | &exception); |
3534 | } while (exception.retry); | |
aa9c2669 DQ |
3535 | |
3536 | nfs4_label_release_security(label); | |
1da177e4 LT |
3537 | return err; |
3538 | } | |
3539 | ||
3540 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3541 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3542 | { |
57dc9a57 TM |
3543 | struct nfs4_createdata *data; |
3544 | int status = -ENOMEM; | |
1da177e4 | 3545 | |
57dc9a57 TM |
3546 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3547 | if (data == NULL) | |
3548 | goto out; | |
3549 | ||
1775fd3e | 3550 | data->arg.label = label; |
57dc9a57 TM |
3551 | status = nfs4_do_create(dir, dentry, data); |
3552 | ||
3553 | nfs4_free_createdata(data); | |
3554 | out: | |
1da177e4 LT |
3555 | return status; |
3556 | } | |
3557 | ||
3558 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3559 | struct iattr *sattr) | |
3560 | { | |
3561 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3562 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3563 | int err; |
a8a5da99 | 3564 | |
aa9c2669 DQ |
3565 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3566 | ||
a8a5da99 | 3567 | sattr->ia_mode &= ~current_umask(); |
1da177e4 LT |
3568 | do { |
3569 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1775fd3e | 3570 | _nfs4_proc_mkdir(dir, dentry, sattr, label), |
1da177e4 LT |
3571 | &exception); |
3572 | } while (exception.retry); | |
aa9c2669 DQ |
3573 | nfs4_label_release_security(label); |
3574 | ||
1da177e4 LT |
3575 | return err; |
3576 | } | |
3577 | ||
3578 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3579 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3580 | { |
3581 | struct inode *dir = dentry->d_inode; | |
3582 | struct nfs4_readdir_arg args = { | |
3583 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3584 | .pages = pages, |
1da177e4 LT |
3585 | .pgbase = 0, |
3586 | .count = count, | |
96d25e53 | 3587 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3588 | .plus = plus, |
1da177e4 LT |
3589 | }; |
3590 | struct nfs4_readdir_res res; | |
3591 | struct rpc_message msg = { | |
3592 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3593 | .rpc_argp = &args, | |
3594 | .rpc_resp = &res, | |
3595 | .rpc_cred = cred, | |
3596 | }; | |
3597 | int status; | |
3598 | ||
3110ff80 | 3599 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3600 | dentry->d_parent->d_name.name, |
3601 | dentry->d_name.name, | |
3602 | (unsigned long long)cookie); | |
c3f52af3 | 3603 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3604 | res.pgbase = args.pgbase; |
7c513058 | 3605 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3606 | if (status >= 0) { |
c3f52af3 | 3607 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3608 | status += args.pgbase; |
3609 | } | |
c4812998 TM |
3610 | |
3611 | nfs_invalidate_atime(dir); | |
3612 | ||
3110ff80 | 3613 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3614 | return status; |
3615 | } | |
3616 | ||
3617 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3618 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3619 | { |
3620 | struct nfs4_exception exception = { }; | |
3621 | int err; | |
3622 | do { | |
3623 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3624 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3625 | pages, count, plus), |
1da177e4 LT |
3626 | &exception); |
3627 | } while (exception.retry); | |
3628 | return err; | |
3629 | } | |
3630 | ||
3631 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3632 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3633 | { |
57dc9a57 TM |
3634 | struct nfs4_createdata *data; |
3635 | int mode = sattr->ia_mode; | |
3636 | int status = -ENOMEM; | |
1da177e4 | 3637 | |
57dc9a57 TM |
3638 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3639 | if (data == NULL) | |
3640 | goto out; | |
3641 | ||
1da177e4 | 3642 | if (S_ISFIFO(mode)) |
57dc9a57 | 3643 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3644 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3645 | data->arg.ftype = NF4BLK; |
3646 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3647 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3648 | } |
3649 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3650 | data->arg.ftype = NF4CHR; |
3651 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3652 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3653 | } else if (!S_ISSOCK(mode)) { |
3654 | status = -EINVAL; | |
3655 | goto out_free; | |
1da177e4 | 3656 | } |
1775fd3e | 3657 | |
aa9c2669 | 3658 | data->arg.label = label; |
57dc9a57 | 3659 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3660 | out_free: |
57dc9a57 TM |
3661 | nfs4_free_createdata(data); |
3662 | out: | |
1da177e4 LT |
3663 | return status; |
3664 | } | |
3665 | ||
3666 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3667 | struct iattr *sattr, dev_t rdev) | |
3668 | { | |
3669 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3670 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3671 | int err; |
a8a5da99 | 3672 | |
aa9c2669 DQ |
3673 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3674 | ||
a8a5da99 | 3675 | sattr->ia_mode &= ~current_umask(); |
1da177e4 LT |
3676 | do { |
3677 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
aa9c2669 | 3678 | _nfs4_proc_mknod(dir, dentry, sattr, label, rdev), |
1da177e4 LT |
3679 | &exception); |
3680 | } while (exception.retry); | |
aa9c2669 DQ |
3681 | |
3682 | nfs4_label_release_security(label); | |
3683 | ||
1da177e4 LT |
3684 | return err; |
3685 | } | |
3686 | ||
3687 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3688 | struct nfs_fsstat *fsstat) | |
3689 | { | |
3690 | struct nfs4_statfs_arg args = { | |
3691 | .fh = fhandle, | |
3692 | .bitmask = server->attr_bitmask, | |
3693 | }; | |
24ad148a BH |
3694 | struct nfs4_statfs_res res = { |
3695 | .fsstat = fsstat, | |
3696 | }; | |
1da177e4 LT |
3697 | struct rpc_message msg = { |
3698 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3699 | .rpc_argp = &args, | |
24ad148a | 3700 | .rpc_resp = &res, |
1da177e4 LT |
3701 | }; |
3702 | ||
0e574af1 | 3703 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3704 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3705 | } |
3706 | ||
3707 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3708 | { | |
3709 | struct nfs4_exception exception = { }; | |
3710 | int err; | |
3711 | do { | |
3712 | err = nfs4_handle_exception(server, | |
3713 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3714 | &exception); | |
3715 | } while (exception.retry); | |
3716 | return err; | |
3717 | } | |
3718 | ||
3719 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3720 | struct nfs_fsinfo *fsinfo) | |
3721 | { | |
3722 | struct nfs4_fsinfo_arg args = { | |
3723 | .fh = fhandle, | |
3724 | .bitmask = server->attr_bitmask, | |
3725 | }; | |
3dda5e43 BH |
3726 | struct nfs4_fsinfo_res res = { |
3727 | .fsinfo = fsinfo, | |
3728 | }; | |
1da177e4 LT |
3729 | struct rpc_message msg = { |
3730 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3731 | .rpc_argp = &args, | |
3dda5e43 | 3732 | .rpc_resp = &res, |
1da177e4 LT |
3733 | }; |
3734 | ||
7c513058 | 3735 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3736 | } |
3737 | ||
3738 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3739 | { | |
3740 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3741 | unsigned long now = jiffies; |
1da177e4 LT |
3742 | int err; |
3743 | ||
3744 | do { | |
83ca7f5a CL |
3745 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
3746 | if (err == 0) { | |
3747 | struct nfs_client *clp = server->nfs_client; | |
3748 | ||
3749 | spin_lock(&clp->cl_lock); | |
3750 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3751 | clp->cl_last_renewal = now; | |
3752 | spin_unlock(&clp->cl_lock); | |
3753 | break; | |
3754 | } | |
3755 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3756 | } while (exception.retry); |
3757 | return err; | |
3758 | } | |
3759 | ||
3760 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3761 | { | |
e38eb650 BS |
3762 | int error; |
3763 | ||
0e574af1 | 3764 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3765 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3766 | if (error == 0) { |
3767 | /* block layout checks this! */ | |
3768 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3769 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3770 | } |
e38eb650 BS |
3771 | |
3772 | return error; | |
1da177e4 LT |
3773 | } |
3774 | ||
3775 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3776 | struct nfs_pathconf *pathconf) | |
3777 | { | |
3778 | struct nfs4_pathconf_arg args = { | |
3779 | .fh = fhandle, | |
3780 | .bitmask = server->attr_bitmask, | |
3781 | }; | |
d45b2989 BH |
3782 | struct nfs4_pathconf_res res = { |
3783 | .pathconf = pathconf, | |
3784 | }; | |
1da177e4 LT |
3785 | struct rpc_message msg = { |
3786 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3787 | .rpc_argp = &args, | |
d45b2989 | 3788 | .rpc_resp = &res, |
1da177e4 LT |
3789 | }; |
3790 | ||
3791 | /* None of the pathconf attributes are mandatory to implement */ | |
3792 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3793 | memset(pathconf, 0, sizeof(*pathconf)); | |
3794 | return 0; | |
3795 | } | |
3796 | ||
0e574af1 | 3797 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3798 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3799 | } |
3800 | ||
3801 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3802 | struct nfs_pathconf *pathconf) | |
3803 | { | |
3804 | struct nfs4_exception exception = { }; | |
3805 | int err; | |
3806 | ||
3807 | do { | |
3808 | err = nfs4_handle_exception(server, | |
3809 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3810 | &exception); | |
3811 | } while (exception.retry); | |
3812 | return err; | |
3813 | } | |
3814 | ||
5521abfd | 3815 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3816 | const struct nfs_open_context *ctx, |
3817 | const struct nfs_lock_context *l_ctx, | |
3818 | fmode_t fmode) | |
3819 | { | |
3820 | const struct nfs_lockowner *lockowner = NULL; | |
3821 | ||
3822 | if (l_ctx != NULL) | |
3823 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3824 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3825 | } |
3826 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3827 | ||
5521abfd TM |
3828 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3829 | const struct nfs_open_context *ctx, | |
3830 | const struct nfs_lock_context *l_ctx, | |
3831 | fmode_t fmode) | |
3832 | { | |
3833 | nfs4_stateid current_stateid; | |
3834 | ||
3835 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3836 | return false; | |
3837 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3838 | } | |
3839 | ||
3840 | static bool nfs4_error_stateid_expired(int err) | |
3841 | { | |
3842 | switch (err) { | |
3843 | case -NFS4ERR_DELEG_REVOKED: | |
3844 | case -NFS4ERR_ADMIN_REVOKED: | |
3845 | case -NFS4ERR_BAD_STATEID: | |
3846 | case -NFS4ERR_STALE_STATEID: | |
3847 | case -NFS4ERR_OLD_STATEID: | |
3848 | case -NFS4ERR_OPENMODE: | |
3849 | case -NFS4ERR_EXPIRED: | |
3850 | return true; | |
3851 | } | |
3852 | return false; | |
3853 | } | |
3854 | ||
d20581aa BH |
3855 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3856 | { | |
cd841605 | 3857 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3858 | } |
3859 | ||
cbdabc7f | 3860 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3861 | { |
cd841605 | 3862 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3863 | |
9e33bed5 | 3864 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3865 | rpc_restart_call_prepare(task); |
ec06c096 | 3866 | return -EAGAIN; |
1da177e4 | 3867 | } |
8850df99 | 3868 | |
d20581aa | 3869 | __nfs4_read_done_cb(data); |
1da177e4 | 3870 | if (task->tk_status > 0) |
ec06c096 TM |
3871 | renew_lease(server, data->timestamp); |
3872 | return 0; | |
1da177e4 LT |
3873 | } |
3874 | ||
5521abfd TM |
3875 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3876 | struct nfs_readargs *args) | |
3877 | { | |
3878 | ||
3879 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3880 | nfs4_stateid_is_current(&args->stateid, | |
3881 | args->context, | |
3882 | args->lock_context, | |
3883 | FMODE_READ)) | |
3884 | return false; | |
3885 | rpc_restart_call_prepare(task); | |
3886 | return true; | |
3887 | } | |
3888 | ||
cbdabc7f AA |
3889 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3890 | { | |
3891 | ||
3892 | dprintk("--> %s\n", __func__); | |
3893 | ||
3894 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3895 | return -EAGAIN; | |
5521abfd TM |
3896 | if (nfs4_read_stateid_changed(task, &data->args)) |
3897 | return -EAGAIN; | |
d20581aa BH |
3898 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3899 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3900 | } |
3901 | ||
bdc7f021 | 3902 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3903 | { |
1da177e4 | 3904 | data->timestamp = jiffies; |
cbdabc7f | 3905 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3906 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3907 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3908 | } |
3909 | ||
ea7c3303 BS |
3910 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3911 | { | |
9b206149 | 3912 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3913 | &data->args.seq_args, |
3914 | &data->res.seq_res, | |
9b206149 TM |
3915 | task)) |
3916 | return; | |
3917 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3918 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3919 | } |
3920 | ||
b029bc9b | 3921 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3922 | { |
cd841605 | 3923 | struct inode *inode = data->header->inode; |
1da177e4 | 3924 | |
9e33bed5 | 3925 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3926 | rpc_restart_call_prepare(task); |
788e7a89 | 3927 | return -EAGAIN; |
1da177e4 | 3928 | } |
4f9838c7 | 3929 | if (task->tk_status >= 0) { |
1da177e4 | 3930 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3931 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3932 | } |
788e7a89 | 3933 | return 0; |
1da177e4 LT |
3934 | } |
3935 | ||
5521abfd TM |
3936 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3937 | struct nfs_writeargs *args) | |
3938 | { | |
3939 | ||
3940 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3941 | nfs4_stateid_is_current(&args->stateid, | |
3942 | args->context, | |
3943 | args->lock_context, | |
3944 | FMODE_WRITE)) | |
3945 | return false; | |
3946 | rpc_restart_call_prepare(task); | |
3947 | return true; | |
3948 | } | |
3949 | ||
b029bc9b FI |
3950 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3951 | { | |
3952 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3953 | return -EAGAIN; | |
5521abfd TM |
3954 | if (nfs4_write_stateid_changed(task, &data->args)) |
3955 | return -EAGAIN; | |
d20581aa BH |
3956 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3957 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3958 | } |
3959 | ||
5a37f851 TM |
3960 | static |
3961 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3962 | { |
5a37f851 TM |
3963 | const struct nfs_pgio_header *hdr = data->header; |
3964 | ||
3965 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3966 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3967 | return false; | |
3968 | /* Otherwise, request attributes if and only if we don't hold | |
3969 | * a delegation | |
3970 | */ | |
011e2a7f | 3971 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3972 | } |
a69aef14 | 3973 | |
bdc7f021 | 3974 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3975 | { |
cd841605 | 3976 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3977 | |
5a37f851 | 3978 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3979 | data->args.bitmask = NULL; |
3980 | data->res.fattr = NULL; | |
3981 | } else | |
3982 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3983 | |
b029bc9b FI |
3984 | if (!data->write_done_cb) |
3985 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3986 | data->res.server = server; |
1da177e4 LT |
3987 | data->timestamp = jiffies; |
3988 | ||
bdc7f021 | 3989 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3990 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3991 | } |
3992 | ||
c6cb80d0 BS |
3993 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3994 | { | |
9b206149 | 3995 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3996 | &data->args.seq_args, |
3997 | &data->res.seq_res, | |
9b206149 TM |
3998 | task)) |
3999 | return; | |
4000 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4001 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
4002 | } |
4003 | ||
0b7c0153 | 4004 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4005 | { |
d9afbd1b TM |
4006 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4007 | &data->args.seq_args, | |
4008 | &data->res.seq_res, | |
4009 | task); | |
1da177e4 LT |
4010 | } |
4011 | ||
0b7c0153 | 4012 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4013 | { |
1da177e4 | 4014 | struct inode *inode = data->inode; |
14516c3a | 4015 | |
9e33bed5 | 4016 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4017 | rpc_restart_call_prepare(task); |
788e7a89 | 4018 | return -EAGAIN; |
1da177e4 | 4019 | } |
788e7a89 | 4020 | return 0; |
1da177e4 LT |
4021 | } |
4022 | ||
0b7c0153 | 4023 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4024 | { |
4025 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4026 | return -EAGAIN; | |
0b7c0153 | 4027 | return data->commit_done_cb(task, data); |
5f452431 FI |
4028 | } |
4029 | ||
0b7c0153 | 4030 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4031 | { |
788e7a89 | 4032 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4033 | |
0b7c0153 FI |
4034 | if (data->commit_done_cb == NULL) |
4035 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4036 | data->res.server = server; |
bdc7f021 | 4037 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 4038 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4039 | } |
4040 | ||
9bc4e3ca CL |
4041 | struct nfs4_renewdata { |
4042 | struct nfs_client *client; | |
4043 | unsigned long timestamp; | |
4044 | }; | |
4045 | ||
1da177e4 LT |
4046 | /* |
4047 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4048 | * standalone procedure for queueing an asynchronous RENEW. | |
4049 | */ | |
9bc4e3ca | 4050 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4051 | { |
9bc4e3ca CL |
4052 | struct nfs4_renewdata *data = calldata; |
4053 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4054 | |
0851de06 AB |
4055 | if (atomic_read(&clp->cl_count) > 1) |
4056 | nfs4_schedule_state_renewal(clp); | |
4057 | nfs_put_client(clp); | |
9bc4e3ca | 4058 | kfree(data); |
dc96aef9 AB |
4059 | } |
4060 | ||
9bc4e3ca | 4061 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4062 | { |
9bc4e3ca CL |
4063 | struct nfs4_renewdata *data = calldata; |
4064 | struct nfs_client *clp = data->client; | |
4065 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
4066 | |
4067 | if (task->tk_status < 0) { | |
95baa25c | 4068 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4069 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4070 | return; | |
4071 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4072 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4073 | return; |
4074 | } | |
4075 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4076 | } |
452e9352 | 4077 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4078 | } |
4079 | ||
963d8fe5 TM |
4080 | static const struct rpc_call_ops nfs4_renew_ops = { |
4081 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4082 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4083 | }; |
4084 | ||
2f60ea6b | 4085 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4086 | { |
4087 | struct rpc_message msg = { | |
4088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4089 | .rpc_argp = clp, | |
b4454fe1 | 4090 | .rpc_cred = cred, |
1da177e4 | 4091 | }; |
9bc4e3ca | 4092 | struct nfs4_renewdata *data; |
1da177e4 | 4093 | |
2f60ea6b TM |
4094 | if (renew_flags == 0) |
4095 | return 0; | |
0851de06 AB |
4096 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4097 | return -EIO; | |
b569ad34 | 4098 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4099 | if (data == NULL) |
4100 | return -ENOMEM; | |
4101 | data->client = clp; | |
4102 | data->timestamp = jiffies; | |
bc7a05ca | 4103 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4104 | &nfs4_renew_ops, data); |
1da177e4 LT |
4105 | } |
4106 | ||
8534d4ec | 4107 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4108 | { |
4109 | struct rpc_message msg = { | |
4110 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4111 | .rpc_argp = clp, | |
b4454fe1 | 4112 | .rpc_cred = cred, |
1da177e4 LT |
4113 | }; |
4114 | unsigned long now = jiffies; | |
4115 | int status; | |
4116 | ||
bc7a05ca | 4117 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4118 | if (status < 0) |
4119 | return status; | |
452e9352 | 4120 | do_renew_lease(clp, now); |
1da177e4 LT |
4121 | return 0; |
4122 | } | |
4123 | ||
aa1870af BF |
4124 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4125 | { | |
4126 | return (server->caps & NFS_CAP_ACLS) | |
4127 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
4128 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
4129 | } | |
4130 | ||
21f498c2 TM |
4131 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4132 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4133 | * the stack. |
4134 | */ | |
21f498c2 | 4135 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4136 | |
e9e3d724 NH |
4137 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4138 | struct page **pages, unsigned int *pgbase) | |
4139 | { | |
4140 | struct page *newpage, **spages; | |
4141 | int rc = 0; | |
4142 | size_t len; | |
4143 | spages = pages; | |
4144 | ||
4145 | do { | |
21f498c2 | 4146 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4147 | newpage = alloc_page(GFP_KERNEL); |
4148 | ||
4149 | if (newpage == NULL) | |
4150 | goto unwind; | |
4151 | memcpy(page_address(newpage), buf, len); | |
4152 | buf += len; | |
4153 | buflen -= len; | |
4154 | *pages++ = newpage; | |
4155 | rc++; | |
4156 | } while (buflen != 0); | |
4157 | ||
4158 | return rc; | |
4159 | ||
4160 | unwind: | |
4161 | for(; rc > 0; rc--) | |
4162 | __free_page(spages[rc-1]); | |
4163 | return -ENOMEM; | |
4164 | } | |
4165 | ||
e50a1c2e BF |
4166 | struct nfs4_cached_acl { |
4167 | int cached; | |
4168 | size_t len; | |
3e9d4154 | 4169 | char data[0]; |
e50a1c2e BF |
4170 | }; |
4171 | ||
4172 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4173 | { | |
4174 | struct nfs_inode *nfsi = NFS_I(inode); | |
4175 | ||
4176 | spin_lock(&inode->i_lock); | |
4177 | kfree(nfsi->nfs4_acl); | |
4178 | nfsi->nfs4_acl = acl; | |
4179 | spin_unlock(&inode->i_lock); | |
4180 | } | |
4181 | ||
4182 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4183 | { | |
4184 | nfs4_set_cached_acl(inode, NULL); | |
4185 | } | |
4186 | ||
4187 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4188 | { | |
4189 | struct nfs_inode *nfsi = NFS_I(inode); | |
4190 | struct nfs4_cached_acl *acl; | |
4191 | int ret = -ENOENT; | |
4192 | ||
4193 | spin_lock(&inode->i_lock); | |
4194 | acl = nfsi->nfs4_acl; | |
4195 | if (acl == NULL) | |
4196 | goto out; | |
4197 | if (buf == NULL) /* user is just asking for length */ | |
4198 | goto out_len; | |
4199 | if (acl->cached == 0) | |
4200 | goto out; | |
4201 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4202 | if (acl->len > buflen) | |
4203 | goto out; | |
4204 | memcpy(buf, acl->data, acl->len); | |
4205 | out_len: | |
4206 | ret = acl->len; | |
4207 | out: | |
4208 | spin_unlock(&inode->i_lock); | |
4209 | return ret; | |
4210 | } | |
4211 | ||
5794d21e | 4212 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4213 | { |
4214 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4215 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4216 | |
1f1ea6c2 | 4217 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4218 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4219 | if (acl == NULL) |
4220 | goto out; | |
4221 | acl->cached = 1; | |
5794d21e | 4222 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4223 | } else { |
4224 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4225 | if (acl == NULL) | |
4226 | goto out; | |
4227 | acl->cached = 0; | |
4228 | } | |
4229 | acl->len = acl_len; | |
4230 | out: | |
4231 | nfs4_set_cached_acl(inode, acl); | |
4232 | } | |
4233 | ||
bf118a34 AA |
4234 | /* |
4235 | * The getxattr API returns the required buffer length when called with a | |
4236 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4237 | * the required buf. On a NULL buf, we send a page of data to the server | |
4238 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4239 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4240 | * the cache. If not so, we throw away the page, and cache the required | |
4241 | * length. The next getxattr call will then produce another round trip to | |
4242 | * the server, this time with the input buf of the required size. | |
4243 | */ | |
16b4289c | 4244 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4245 | { |
bf118a34 | 4246 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4247 | struct nfs_getaclargs args = { |
4248 | .fh = NFS_FH(inode), | |
4249 | .acl_pages = pages, | |
4250 | .acl_len = buflen, | |
4251 | }; | |
663c79b3 BH |
4252 | struct nfs_getaclres res = { |
4253 | .acl_len = buflen, | |
4254 | }; | |
aa1870af BF |
4255 | struct rpc_message msg = { |
4256 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4257 | .rpc_argp = &args, | |
663c79b3 | 4258 | .rpc_resp = &res, |
aa1870af | 4259 | }; |
21f498c2 TM |
4260 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4261 | int ret = -ENOMEM, i; | |
aa1870af | 4262 | |
bf118a34 AA |
4263 | /* As long as we're doing a round trip to the server anyway, |
4264 | * let's be prepared for a page of acl data. */ | |
4265 | if (npages == 0) | |
4266 | npages = 1; | |
21f498c2 TM |
4267 | if (npages > ARRAY_SIZE(pages)) |
4268 | return -ERANGE; | |
5a006899 | 4269 | |
bf118a34 AA |
4270 | for (i = 0; i < npages; i++) { |
4271 | pages[i] = alloc_page(GFP_KERNEL); | |
4272 | if (!pages[i]) | |
4273 | goto out_free; | |
e50a1c2e | 4274 | } |
5a006899 SP |
4275 | |
4276 | /* for decoding across pages */ | |
4277 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4278 | if (!res.acl_scratch) | |
4279 | goto out_free; | |
4280 | ||
bf118a34 AA |
4281 | args.acl_len = npages * PAGE_SIZE; |
4282 | args.acl_pgbase = 0; | |
5a006899 | 4283 | |
de040bec | 4284 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4285 | __func__, buf, buflen, npages, args.acl_len); |
4286 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4287 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4288 | if (ret) |
4289 | goto out_free; | |
bf118a34 | 4290 | |
1f1ea6c2 TM |
4291 | /* Handle the case where the passed-in buffer is too short */ |
4292 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4293 | /* Did the user only issue a request for the acl length? */ | |
4294 | if (buf == NULL) | |
4295 | goto out_ok; | |
e50a1c2e | 4296 | ret = -ERANGE; |
1f1ea6c2 | 4297 | goto out_free; |
e50a1c2e | 4298 | } |
1f1ea6c2 | 4299 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4300 | if (buf) { |
4301 | if (res.acl_len > buflen) { | |
4302 | ret = -ERANGE; | |
4303 | goto out_free; | |
4304 | } | |
1f1ea6c2 | 4305 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4306 | } |
1f1ea6c2 TM |
4307 | out_ok: |
4308 | ret = res.acl_len; | |
e50a1c2e | 4309 | out_free: |
bf118a34 AA |
4310 | for (i = 0; i < npages; i++) |
4311 | if (pages[i]) | |
4312 | __free_page(pages[i]); | |
331818f1 TM |
4313 | if (res.acl_scratch) |
4314 | __free_page(res.acl_scratch); | |
aa1870af BF |
4315 | return ret; |
4316 | } | |
4317 | ||
16b4289c TM |
4318 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4319 | { | |
4320 | struct nfs4_exception exception = { }; | |
4321 | ssize_t ret; | |
4322 | do { | |
4323 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4324 | if (ret >= 0) | |
4325 | break; | |
4326 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4327 | } while (exception.retry); | |
4328 | return ret; | |
4329 | } | |
4330 | ||
e50a1c2e BF |
4331 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4332 | { | |
4333 | struct nfs_server *server = NFS_SERVER(inode); | |
4334 | int ret; | |
4335 | ||
4336 | if (!nfs4_server_supports_acls(server)) | |
4337 | return -EOPNOTSUPP; | |
4338 | ret = nfs_revalidate_inode(server, inode); | |
4339 | if (ret < 0) | |
4340 | return ret; | |
08a22b39 AK |
4341 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4342 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4343 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4344 | if (ret != -ENOENT) | |
bf118a34 AA |
4345 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4346 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4347 | return ret; |
4348 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4349 | } | |
4350 | ||
16b4289c | 4351 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4352 | { |
4353 | struct nfs_server *server = NFS_SERVER(inode); | |
4354 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4355 | struct nfs_setaclargs arg = { | |
4356 | .fh = NFS_FH(inode), | |
4357 | .acl_pages = pages, | |
4358 | .acl_len = buflen, | |
4359 | }; | |
73c403a9 | 4360 | struct nfs_setaclres res; |
4b580ee3 BF |
4361 | struct rpc_message msg = { |
4362 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4363 | .rpc_argp = &arg, | |
73c403a9 | 4364 | .rpc_resp = &res, |
4b580ee3 | 4365 | }; |
21f498c2 | 4366 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4367 | int ret, i; |
4b580ee3 BF |
4368 | |
4369 | if (!nfs4_server_supports_acls(server)) | |
4370 | return -EOPNOTSUPP; | |
21f498c2 TM |
4371 | if (npages > ARRAY_SIZE(pages)) |
4372 | return -ERANGE; | |
e9e3d724 NH |
4373 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4374 | if (i < 0) | |
4375 | return i; | |
57ec14c5 | 4376 | nfs4_inode_return_delegation(inode); |
7c513058 | 4377 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4378 | |
4379 | /* | |
4380 | * Free each page after tx, so the only ref left is | |
4381 | * held by the network stack | |
4382 | */ | |
4383 | for (; i > 0; i--) | |
4384 | put_page(pages[i-1]); | |
4385 | ||
08a22b39 AK |
4386 | /* |
4387 | * Acl update can result in inode attribute update. | |
4388 | * so mark the attribute cache invalid. | |
4389 | */ | |
4390 | spin_lock(&inode->i_lock); | |
4391 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4392 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4393 | nfs_access_zap_cache(inode); |
4394 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4395 | return ret; |
4396 | } | |
4397 | ||
16b4289c TM |
4398 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4399 | { | |
4400 | struct nfs4_exception exception = { }; | |
4401 | int err; | |
4402 | do { | |
4403 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4404 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4405 | &exception); | |
4406 | } while (exception.retry); | |
4407 | return err; | |
4408 | } | |
4409 | ||
aa9c2669 DQ |
4410 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4411 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4412 | size_t buflen) | |
4413 | { | |
4414 | struct nfs_server *server = NFS_SERVER(inode); | |
4415 | struct nfs_fattr fattr; | |
4416 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4417 | ||
4418 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4419 | struct nfs4_getattr_arg args = { | |
4420 | .fh = NFS_FH(inode), | |
4421 | .bitmask = bitmask, | |
4422 | }; | |
4423 | struct nfs4_getattr_res res = { | |
4424 | .fattr = &fattr, | |
4425 | .label = &label, | |
4426 | .server = server, | |
4427 | }; | |
4428 | struct rpc_message msg = { | |
4429 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4430 | .rpc_argp = &args, | |
4431 | .rpc_resp = &res, | |
4432 | }; | |
4433 | int ret; | |
4434 | ||
4435 | nfs_fattr_init(&fattr); | |
4436 | ||
4437 | ret = rpc_call_sync(server->client, &msg, 0); | |
4438 | if (ret) | |
4439 | return ret; | |
4440 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4441 | return -ENOENT; | |
4442 | if (buflen < label.len) | |
4443 | return -ERANGE; | |
4444 | return 0; | |
4445 | } | |
4446 | ||
4447 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4448 | size_t buflen) | |
4449 | { | |
4450 | struct nfs4_exception exception = { }; | |
4451 | int err; | |
4452 | ||
4453 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4454 | return -EOPNOTSUPP; | |
4455 | ||
4456 | do { | |
4457 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4458 | _nfs4_get_security_label(inode, buf, buflen), | |
4459 | &exception); | |
4460 | } while (exception.retry); | |
4461 | return err; | |
4462 | } | |
4463 | ||
4464 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4465 | struct nfs4_label *ilabel, | |
4466 | struct nfs_fattr *fattr, | |
4467 | struct nfs4_label *olabel) | |
4468 | { | |
4469 | ||
4470 | struct iattr sattr = {0}; | |
4471 | struct nfs_server *server = NFS_SERVER(inode); | |
4472 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4473 | struct nfs_setattrargs args = { | |
4474 | .fh = NFS_FH(inode), | |
4475 | .iap = &sattr, | |
4476 | .server = server, | |
4477 | .bitmask = bitmask, | |
4478 | .label = ilabel, | |
4479 | }; | |
4480 | struct nfs_setattrres res = { | |
4481 | .fattr = fattr, | |
4482 | .label = olabel, | |
4483 | .server = server, | |
4484 | }; | |
4485 | struct rpc_message msg = { | |
4486 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
4487 | .rpc_argp = &args, | |
4488 | .rpc_resp = &res, | |
4489 | }; | |
4490 | int status; | |
4491 | ||
4492 | nfs4_stateid_copy(&args.stateid, &zero_stateid); | |
4493 | ||
4494 | status = rpc_call_sync(server->client, &msg, 0); | |
4495 | if (status) | |
4496 | dprintk("%s failed: %d\n", __func__, status); | |
4497 | ||
4498 | return status; | |
4499 | } | |
4500 | ||
4501 | static int nfs4_do_set_security_label(struct inode *inode, | |
4502 | struct nfs4_label *ilabel, | |
4503 | struct nfs_fattr *fattr, | |
4504 | struct nfs4_label *olabel) | |
4505 | { | |
4506 | struct nfs4_exception exception = { }; | |
4507 | int err; | |
4508 | ||
4509 | do { | |
4510 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4511 | _nfs4_do_set_security_label(inode, ilabel, | |
4512 | fattr, olabel), | |
4513 | &exception); | |
4514 | } while (exception.retry); | |
4515 | return err; | |
4516 | } | |
4517 | ||
4518 | static int | |
4519 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4520 | { | |
4521 | struct nfs4_label ilabel, *olabel = NULL; | |
4522 | struct nfs_fattr fattr; | |
4523 | struct rpc_cred *cred; | |
4524 | struct inode *inode = dentry->d_inode; | |
4525 | int status; | |
4526 | ||
4527 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4528 | return -EOPNOTSUPP; | |
4529 | ||
4530 | nfs_fattr_init(&fattr); | |
4531 | ||
4532 | ilabel.pi = 0; | |
4533 | ilabel.lfs = 0; | |
4534 | ilabel.label = (char *)buf; | |
4535 | ilabel.len = buflen; | |
4536 | ||
4537 | cred = rpc_lookup_cred(); | |
4538 | if (IS_ERR(cred)) | |
4539 | return PTR_ERR(cred); | |
4540 | ||
4541 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4542 | if (IS_ERR(olabel)) { | |
4543 | status = -PTR_ERR(olabel); | |
4544 | goto out; | |
4545 | } | |
4546 | ||
4547 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4548 | if (status == 0) | |
4549 | nfs_setsecurity(inode, &fattr, olabel); | |
4550 | ||
4551 | nfs4_label_free(olabel); | |
4552 | out: | |
4553 | put_rpccred(cred); | |
4554 | return status; | |
4555 | } | |
4556 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4557 | ||
4558 | ||
1da177e4 | 4559 | static int |
aa5190d0 | 4560 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4561 | { |
aa5190d0 TM |
4562 | struct nfs_client *clp = server->nfs_client; |
4563 | ||
4564 | if (task->tk_status >= 0) | |
1da177e4 LT |
4565 | return 0; |
4566 | switch(task->tk_status) { | |
a1d0b5ee | 4567 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4568 | case -NFS4ERR_ADMIN_REVOKED: |
4569 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4570 | if (state == NULL) |
4571 | break; | |
4572 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4573 | case -NFS4ERR_OPENMODE: |
4574 | if (state == NULL) | |
4575 | break; | |
5d422301 TM |
4576 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4577 | goto stateid_invalid; | |
0400a6b0 | 4578 | goto wait_on_recovery; |
0ced63d1 | 4579 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4580 | if (state != NULL) { |
4581 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4582 | goto stateid_invalid; | |
4583 | } | |
1da177e4 | 4584 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4585 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4586 | nfs4_schedule_lease_recovery(clp); |
4587 | goto wait_on_recovery; | |
4745e315 AA |
4588 | #if defined(CONFIG_NFS_V4_1) |
4589 | case -NFS4ERR_BADSESSION: | |
4590 | case -NFS4ERR_BADSLOT: | |
4591 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4592 | case -NFS4ERR_DEADSESSION: | |
4593 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4594 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4595 | case -NFS4ERR_SEQ_MISORDERED: | |
4596 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4597 | task->tk_status); | |
9f594791 | 4598 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4599 | task->tk_status = 0; |
4600 | return -EAGAIN; | |
4601 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4602 | case -NFS4ERR_DELAY: |
aa5190d0 | 4603 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4604 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4605 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4606 | task->tk_status = 0; | |
4607 | return -EAGAIN; | |
a8a4ae3a | 4608 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4609 | case -NFS4ERR_OLD_STATEID: |
4610 | task->tk_status = 0; | |
4611 | return -EAGAIN; | |
4612 | } | |
4613 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4614 | return 0; | |
5d422301 TM |
4615 | stateid_invalid: |
4616 | task->tk_status = -EIO; | |
4617 | return 0; | |
0400a6b0 | 4618 | wait_on_recovery: |
a2c0b9e2 | 4619 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4620 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4621 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4622 | task->tk_status = 0; | |
4623 | return -EAGAIN; | |
1da177e4 LT |
4624 | } |
4625 | ||
f092075d CL |
4626 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4627 | nfs4_verifier *bootverf) | |
cd93710e CL |
4628 | { |
4629 | __be32 verf[2]; | |
4630 | ||
2c820d9a CL |
4631 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4632 | /* An impossible timestamp guarantees this value | |
4633 | * will never match a generated boot time. */ | |
4634 | verf[0] = 0; | |
4635 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4636 | } else { | |
f092075d CL |
4637 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4638 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4639 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4640 | } |
cd93710e CL |
4641 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4642 | } | |
4643 | ||
e984a55a CL |
4644 | static unsigned int |
4645 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4646 | char *buf, size_t len) | |
4647 | { | |
4648 | unsigned int result; | |
4649 | ||
4650 | rcu_read_lock(); | |
4651 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4652 | clp->cl_ipaddr, | |
4653 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4654 | RPC_DISPLAY_ADDR), | |
4655 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4656 | RPC_DISPLAY_PROTO)); | |
4657 | rcu_read_unlock(); | |
4658 | return result; | |
4659 | } | |
4660 | ||
4661 | static unsigned int | |
4662 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4663 | char *buf, size_t len) | |
4664 | { | |
6f2ea7f2 CL |
4665 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4666 | ||
4667 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4668 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4669 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4670 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4671 | nodename); |
e984a55a CL |
4672 | } |
4673 | ||
6bbb4ae8 CL |
4674 | /** |
4675 | * nfs4_proc_setclientid - Negotiate client ID | |
4676 | * @clp: state data structure | |
4677 | * @program: RPC program for NFSv4 callback service | |
4678 | * @port: IP port number for NFS4 callback service | |
4679 | * @cred: RPC credential to use for this call | |
4680 | * @res: where to place the result | |
4681 | * | |
4682 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4683 | */ | |
bb8b27e5 TM |
4684 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4685 | unsigned short port, struct rpc_cred *cred, | |
4686 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4687 | { |
4688 | nfs4_verifier sc_verifier; | |
4689 | struct nfs4_setclientid setclientid = { | |
4690 | .sc_verifier = &sc_verifier, | |
4691 | .sc_prog = program, | |
f4eecd5d | 4692 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4693 | }; |
4694 | struct rpc_message msg = { | |
4695 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4696 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4697 | .rpc_resp = res, |
286d7d6a | 4698 | .rpc_cred = cred, |
1da177e4 | 4699 | }; |
6bbb4ae8 | 4700 | int status; |
1da177e4 | 4701 | |
de734831 | 4702 | /* nfs_client_id4 */ |
f092075d | 4703 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4704 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4705 | setclientid.sc_name_len = | |
4706 | nfs4_init_uniform_client_string(clp, | |
4707 | setclientid.sc_name, | |
4708 | sizeof(setclientid.sc_name)); | |
4709 | else | |
4710 | setclientid.sc_name_len = | |
4711 | nfs4_init_nonuniform_client_string(clp, | |
4712 | setclientid.sc_name, | |
4713 | sizeof(setclientid.sc_name)); | |
de734831 | 4714 | /* cb_client4 */ |
e984a55a | 4715 | rcu_read_lock(); |
de734831 | 4716 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
fe2d5395 | 4717 | sizeof(setclientid.sc_netid), "%s", |
d4d3c507 CL |
4718 | rpc_peeraddr2str(clp->cl_rpcclient, |
4719 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4720 | rcu_read_unlock(); |
4721 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4722 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4723 | clp->cl_ipaddr, port >> 8, port & 255); |
4724 | ||
6bbb4ae8 CL |
4725 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4726 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4727 | setclientid.sc_name_len, setclientid.sc_name); | |
4728 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4729 | dprintk("NFS reply setclientid: %d\n", status); | |
4730 | return status; | |
1da177e4 LT |
4731 | } |
4732 | ||
6bbb4ae8 CL |
4733 | /** |
4734 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4735 | * @clp: state data structure | |
4736 | * @res: result of a previous SETCLIENTID | |
4737 | * @cred: RPC credential to use for this call | |
4738 | * | |
4739 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4740 | */ | |
fd954ae1 | 4741 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4742 | struct nfs4_setclientid_res *arg, |
4743 | struct rpc_cred *cred) | |
1da177e4 | 4744 | { |
1da177e4 LT |
4745 | struct rpc_message msg = { |
4746 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4747 | .rpc_argp = arg, |
286d7d6a | 4748 | .rpc_cred = cred, |
1da177e4 | 4749 | }; |
1da177e4 LT |
4750 | int status; |
4751 | ||
6bbb4ae8 CL |
4752 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4753 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4754 | clp->cl_clientid); | |
1bd714f2 | 4755 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
6bbb4ae8 | 4756 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4757 | return status; |
4758 | } | |
4759 | ||
fe650407 TM |
4760 | struct nfs4_delegreturndata { |
4761 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4762 | struct nfs4_delegreturnres res; |
fe650407 TM |
4763 | struct nfs_fh fh; |
4764 | nfs4_stateid stateid; | |
26e976a8 | 4765 | unsigned long timestamp; |
fa178f29 | 4766 | struct nfs_fattr fattr; |
fe650407 TM |
4767 | int rpc_status; |
4768 | }; | |
4769 | ||
fe650407 TM |
4770 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4771 | { | |
4772 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4773 | |
14516c3a TM |
4774 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4775 | return; | |
938e1010 | 4776 | |
79708861 RL |
4777 | switch (task->tk_status) { |
4778 | case -NFS4ERR_STALE_STATEID: | |
4779 | case -NFS4ERR_EXPIRED: | |
4780 | case 0: | |
fa178f29 | 4781 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4782 | break; |
4783 | default: | |
4784 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4785 | -EAGAIN) { | |
d00c5d43 | 4786 | rpc_restart_call_prepare(task); |
79708861 RL |
4787 | return; |
4788 | } | |
4789 | } | |
4790 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4791 | } |
4792 | ||
4793 | static void nfs4_delegreturn_release(void *calldata) | |
4794 | { | |
fe650407 TM |
4795 | kfree(calldata); |
4796 | } | |
4797 | ||
938e1010 AA |
4798 | #if defined(CONFIG_NFS_V4_1) |
4799 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4800 | { | |
4801 | struct nfs4_delegreturndata *d_data; | |
4802 | ||
4803 | d_data = (struct nfs4_delegreturndata *)data; | |
4804 | ||
d9afbd1b TM |
4805 | nfs4_setup_sequence(d_data->res.server, |
4806 | &d_data->args.seq_args, | |
4807 | &d_data->res.seq_res, | |
4808 | task); | |
938e1010 AA |
4809 | } |
4810 | #endif /* CONFIG_NFS_V4_1 */ | |
4811 | ||
c8d149f3 | 4812 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4813 | #if defined(CONFIG_NFS_V4_1) |
4814 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4815 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4816 | .rpc_call_done = nfs4_delegreturn_done, |
4817 | .rpc_release = nfs4_delegreturn_release, | |
4818 | }; | |
4819 | ||
e6f81075 | 4820 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4821 | { |
4822 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4823 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4824 | struct rpc_task *task; |
5138fde0 TM |
4825 | struct rpc_message msg = { |
4826 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4827 | .rpc_cred = cred, | |
4828 | }; | |
c970aa85 TM |
4829 | struct rpc_task_setup task_setup_data = { |
4830 | .rpc_client = server->client, | |
5138fde0 | 4831 | .rpc_message = &msg, |
c970aa85 TM |
4832 | .callback_ops = &nfs4_delegreturn_ops, |
4833 | .flags = RPC_TASK_ASYNC, | |
4834 | }; | |
e6f81075 | 4835 | int status = 0; |
fe650407 | 4836 | |
8535b2be | 4837 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4838 | if (data == NULL) |
4839 | return -ENOMEM; | |
9d12b216 | 4840 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4841 | data->args.fhandle = &data->fh; |
4842 | data->args.stateid = &data->stateid; | |
9e907fec | 4843 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4844 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4845 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4846 | data->res.fattr = &data->fattr; |
4847 | data->res.server = server; | |
5138fde0 | 4848 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4849 | data->timestamp = jiffies; |
fe650407 TM |
4850 | data->rpc_status = 0; |
4851 | ||
c970aa85 | 4852 | task_setup_data.callback_data = data; |
1174dd1f TM |
4853 | msg.rpc_argp = &data->args; |
4854 | msg.rpc_resp = &data->res; | |
c970aa85 | 4855 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4856 | if (IS_ERR(task)) |
fe650407 | 4857 | return PTR_ERR(task); |
e6f81075 TM |
4858 | if (!issync) |
4859 | goto out; | |
fe650407 | 4860 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4861 | if (status != 0) |
4862 | goto out; | |
4863 | status = data->rpc_status; | |
e144cbcc TM |
4864 | if (status == 0) |
4865 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4866 | else | |
4867 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4868 | out: |
e6b3c4db | 4869 | rpc_put_task(task); |
fe650407 | 4870 | return status; |
1da177e4 LT |
4871 | } |
4872 | ||
e6f81075 | 4873 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4874 | { |
4875 | struct nfs_server *server = NFS_SERVER(inode); | |
4876 | struct nfs4_exception exception = { }; | |
4877 | int err; | |
4878 | do { | |
e6f81075 | 4879 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4880 | switch (err) { |
4881 | case -NFS4ERR_STALE_STATEID: | |
4882 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4883 | case 0: |
4884 | return 0; | |
4885 | } | |
4886 | err = nfs4_handle_exception(server, err, &exception); | |
4887 | } while (exception.retry); | |
4888 | return err; | |
4889 | } | |
4890 | ||
4891 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4892 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4893 | ||
4894 | /* | |
4895 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4896 | */ | |
4897 | static unsigned long | |
4898 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4899 | { | |
416ad3c9 | 4900 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
4901 | timeout <<= 1; |
4902 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4903 | return NFS4_LOCK_MAXTIMEOUT; | |
4904 | return timeout; | |
4905 | } | |
4906 | ||
1da177e4 LT |
4907 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4908 | { | |
4909 | struct inode *inode = state->inode; | |
4910 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4911 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4912 | struct nfs_lockt_args arg = { |
1da177e4 | 4913 | .fh = NFS_FH(inode), |
911d1aaf | 4914 | .fl = request, |
1da177e4 | 4915 | }; |
911d1aaf TM |
4916 | struct nfs_lockt_res res = { |
4917 | .denied = request, | |
1da177e4 LT |
4918 | }; |
4919 | struct rpc_message msg = { | |
4920 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4921 | .rpc_argp = &arg, | |
4922 | .rpc_resp = &res, | |
4923 | .rpc_cred = state->owner->so_cred, | |
4924 | }; | |
1da177e4 LT |
4925 | struct nfs4_lock_state *lsp; |
4926 | int status; | |
4927 | ||
911d1aaf | 4928 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4929 | status = nfs4_set_lock_state(state, request); |
4930 | if (status != 0) | |
4931 | goto out; | |
4932 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4933 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4934 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4935 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4936 | switch (status) { |
4937 | case 0: | |
4938 | request->fl_type = F_UNLCK; | |
4939 | break; | |
4940 | case -NFS4ERR_DENIED: | |
4941 | status = 0; | |
1da177e4 | 4942 | } |
70cc6487 | 4943 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4944 | out: |
1da177e4 LT |
4945 | return status; |
4946 | } | |
4947 | ||
4948 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4949 | { | |
4950 | struct nfs4_exception exception = { }; | |
4951 | int err; | |
4952 | ||
4953 | do { | |
4954 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4955 | _nfs4_proc_getlk(state, cmd, request), | |
4956 | &exception); | |
4957 | } while (exception.retry); | |
4958 | return err; | |
4959 | } | |
4960 | ||
4961 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4962 | { | |
4963 | int res = 0; | |
4964 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4965 | case FL_POSIX: | |
4966 | res = posix_lock_file_wait(file, fl); | |
4967 | break; | |
4968 | case FL_FLOCK: | |
4969 | res = flock_lock_file_wait(file, fl); | |
4970 | break; | |
4971 | default: | |
4972 | BUG(); | |
4973 | } | |
1da177e4 LT |
4974 | return res; |
4975 | } | |
4976 | ||
faf5f49c | 4977 | struct nfs4_unlockdata { |
911d1aaf TM |
4978 | struct nfs_locku_args arg; |
4979 | struct nfs_locku_res res; | |
faf5f49c TM |
4980 | struct nfs4_lock_state *lsp; |
4981 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4982 | struct file_lock fl; |
4983 | const struct nfs_server *server; | |
26e976a8 | 4984 | unsigned long timestamp; |
faf5f49c TM |
4985 | }; |
4986 | ||
911d1aaf TM |
4987 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4988 | struct nfs_open_context *ctx, | |
4989 | struct nfs4_lock_state *lsp, | |
4990 | struct nfs_seqid *seqid) | |
4991 | { | |
4992 | struct nfs4_unlockdata *p; | |
4993 | struct inode *inode = lsp->ls_state->inode; | |
4994 | ||
8535b2be | 4995 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4996 | if (p == NULL) |
4997 | return NULL; | |
4998 | p->arg.fh = NFS_FH(inode); | |
4999 | p->arg.fl = &p->fl; | |
5000 | p->arg.seqid = seqid; | |
c1d51931 | 5001 | p->res.seqid = seqid; |
911d1aaf TM |
5002 | p->arg.stateid = &lsp->ls_stateid; |
5003 | p->lsp = lsp; | |
5004 | atomic_inc(&lsp->ls_count); | |
5005 | /* Ensure we don't close file until we're done freeing locks! */ | |
5006 | p->ctx = get_nfs_open_context(ctx); | |
5007 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5008 | p->server = NFS_SERVER(inode); | |
5009 | return p; | |
5010 | } | |
5011 | ||
06f814a3 | 5012 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5013 | { |
963d8fe5 | 5014 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5015 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5016 | nfs4_put_lock_state(calldata->lsp); |
5017 | put_nfs_open_context(calldata->ctx); | |
5018 | kfree(calldata); | |
faf5f49c TM |
5019 | } |
5020 | ||
963d8fe5 | 5021 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5022 | { |
963d8fe5 | 5023 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5024 | |
14516c3a TM |
5025 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5026 | return; | |
faf5f49c TM |
5027 | switch (task->tk_status) { |
5028 | case 0: | |
f597c537 TM |
5029 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5030 | &calldata->res.stateid); | |
26e976a8 | 5031 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5032 | break; |
9e33bed5 TM |
5033 | case -NFS4ERR_BAD_STATEID: |
5034 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5035 | case -NFS4ERR_STALE_STATEID: |
5036 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5037 | break; |
5038 | default: | |
9e33bed5 | 5039 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5040 | rpc_restart_call_prepare(task); |
faf5f49c | 5041 | } |
2b1bc308 | 5042 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5043 | } |
5044 | ||
4ce70ada | 5045 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5046 | { |
4ce70ada | 5047 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5048 | |
911d1aaf | 5049 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5050 | goto out_wait; |
795a88c9 | 5051 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5052 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5053 | goto out_no_action; |
faf5f49c | 5054 | } |
26e976a8 | 5055 | calldata->timestamp = jiffies; |
035168ab | 5056 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5057 | &calldata->arg.seq_args, |
2240a9e2 TM |
5058 | &calldata->res.seq_res, |
5059 | task) != 0) | |
5060 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5061 | return; |
5062 | out_no_action: | |
5063 | task->tk_action = NULL; | |
5064 | out_wait: | |
5065 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5066 | } |
5067 | ||
963d8fe5 | 5068 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5069 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5070 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5071 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5072 | }; |
5073 | ||
a5d16a4d TM |
5074 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5075 | struct nfs_open_context *ctx, | |
5076 | struct nfs4_lock_state *lsp, | |
5077 | struct nfs_seqid *seqid) | |
5078 | { | |
5079 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5080 | struct rpc_message msg = { |
5081 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5082 | .rpc_cred = ctx->cred, | |
5083 | }; | |
c970aa85 TM |
5084 | struct rpc_task_setup task_setup_data = { |
5085 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5086 | .rpc_message = &msg, |
c970aa85 | 5087 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5088 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5089 | .flags = RPC_TASK_ASYNC, |
5090 | }; | |
a5d16a4d | 5091 | |
137d6aca FF |
5092 | /* Ensure this is an unlock - when canceling a lock, the |
5093 | * canceled lock is passed in, and it won't be an unlock. | |
5094 | */ | |
5095 | fl->fl_type = F_UNLCK; | |
5096 | ||
a5d16a4d TM |
5097 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5098 | if (data == NULL) { | |
5099 | nfs_free_seqid(seqid); | |
5100 | return ERR_PTR(-ENOMEM); | |
5101 | } | |
5102 | ||
9d12b216 | 5103 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5104 | msg.rpc_argp = &data->arg; |
5105 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5106 | task_setup_data.callback_data = data; |
5107 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5108 | } |
5109 | ||
faf5f49c TM |
5110 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5111 | { | |
65b62a29 TM |
5112 | struct inode *inode = state->inode; |
5113 | struct nfs4_state_owner *sp = state->owner; | |
5114 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5115 | struct nfs_seqid *seqid; |
1da177e4 | 5116 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5117 | struct rpc_task *task; |
5118 | int status = 0; | |
536ff0f8 | 5119 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5120 | |
8d0a8a9d | 5121 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5122 | /* Unlock _before_ we do the RPC call */ |
5123 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5124 | /* Exclude nfs_delegation_claim_locks() */ |
5125 | mutex_lock(&sp->so_delegreturn_mutex); | |
5126 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5127 | down_read(&nfsi->rwsem); |
5128 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5129 | up_read(&nfsi->rwsem); | |
65b62a29 | 5130 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5131 | goto out; |
19e03c57 TM |
5132 | } |
5133 | up_read(&nfsi->rwsem); | |
65b62a29 | 5134 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5135 | if (status != 0) |
9b073574 TM |
5136 | goto out; |
5137 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5138 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5139 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5140 | goto out; | |
8535b2be | 5141 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5142 | status = -ENOMEM; |
911d1aaf | 5143 | if (seqid == NULL) |
9b073574 | 5144 | goto out; |
cd3758e3 | 5145 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5146 | status = PTR_ERR(task); |
5147 | if (IS_ERR(task)) | |
9b073574 | 5148 | goto out; |
a5d16a4d | 5149 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5150 | rpc_put_task(task); |
9b073574 | 5151 | out: |
536ff0f8 | 5152 | request->fl_flags = fl_flags; |
1da177e4 LT |
5153 | return status; |
5154 | } | |
5155 | ||
a5d16a4d TM |
5156 | struct nfs4_lockdata { |
5157 | struct nfs_lock_args arg; | |
5158 | struct nfs_lock_res res; | |
5159 | struct nfs4_lock_state *lsp; | |
5160 | struct nfs_open_context *ctx; | |
5161 | struct file_lock fl; | |
26e976a8 | 5162 | unsigned long timestamp; |
a5d16a4d TM |
5163 | int rpc_status; |
5164 | int cancelled; | |
66179efe | 5165 | struct nfs_server *server; |
a5d16a4d TM |
5166 | }; |
5167 | ||
5168 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5169 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5170 | gfp_t gfp_mask) | |
1da177e4 | 5171 | { |
a5d16a4d TM |
5172 | struct nfs4_lockdata *p; |
5173 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5174 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5175 | |
8535b2be | 5176 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5177 | if (p == NULL) |
5178 | return NULL; | |
5179 | ||
5180 | p->arg.fh = NFS_FH(inode); | |
5181 | p->arg.fl = &p->fl; | |
8535b2be | 5182 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5183 | if (p->arg.open_seqid == NULL) |
5184 | goto out_free; | |
8535b2be | 5185 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5186 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5187 | goto out_free_seqid; |
a5d16a4d | 5188 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5189 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5190 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5191 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5192 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5193 | p->lsp = lsp; |
66179efe | 5194 | p->server = server; |
a5d16a4d TM |
5195 | atomic_inc(&lsp->ls_count); |
5196 | p->ctx = get_nfs_open_context(ctx); | |
5197 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5198 | return p; | |
2f74c0a0 TM |
5199 | out_free_seqid: |
5200 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5201 | out_free: |
5202 | kfree(p); | |
5203 | return NULL; | |
5204 | } | |
5205 | ||
5206 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5207 | { | |
5208 | struct nfs4_lockdata *data = calldata; | |
5209 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5210 | |
3110ff80 | 5211 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5212 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5213 | goto out_wait; |
a5d16a4d TM |
5214 | /* Do we need to do an open_to_lock_owner? */ |
5215 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5216 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5217 | goto out_release_lock_seqid; |
8fe72bac | 5218 | } |
8e472f33 | 5219 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5220 | data->arg.new_lock_owner = 1; |
c1d51931 | 5221 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5222 | } else |
5223 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5224 | if (!nfs4_valid_open_stateid(state)) { |
5225 | data->rpc_status = -EBADF; | |
5226 | task->tk_action = NULL; | |
5227 | goto out_release_open_seqid; | |
5228 | } | |
26e976a8 | 5229 | data->timestamp = jiffies; |
035168ab TM |
5230 | if (nfs4_setup_sequence(data->server, |
5231 | &data->arg.seq_args, | |
2240a9e2 | 5232 | &data->res.seq_res, |
d9afbd1b | 5233 | task) == 0) |
66179efe | 5234 | return; |
5d422301 | 5235 | out_release_open_seqid: |
2240a9e2 TM |
5236 | nfs_release_seqid(data->arg.open_seqid); |
5237 | out_release_lock_seqid: | |
5238 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5239 | out_wait: |
5240 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5241 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5242 | } |
5243 | ||
a5d16a4d TM |
5244 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5245 | { | |
5246 | struct nfs4_lockdata *data = calldata; | |
5247 | ||
3110ff80 | 5248 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5249 | |
14516c3a TM |
5250 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5251 | return; | |
66179efe | 5252 | |
a5d16a4d | 5253 | data->rpc_status = task->tk_status; |
a5d16a4d | 5254 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5255 | if (data->rpc_status == 0) |
5256 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5257 | else | |
5258 | goto out; | |
5259 | } | |
5260 | if (data->rpc_status == 0) { | |
f597c537 | 5261 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5262 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5263 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5264 | } |
a5d16a4d | 5265 | out: |
3110ff80 | 5266 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5267 | } |
5268 | ||
5269 | static void nfs4_lock_release(void *calldata) | |
5270 | { | |
5271 | struct nfs4_lockdata *data = calldata; | |
5272 | ||
3110ff80 | 5273 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5274 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5275 | if (data->cancelled != 0) { |
5276 | struct rpc_task *task; | |
5277 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5278 | data->arg.lock_seqid); | |
5279 | if (!IS_ERR(task)) | |
bf294b41 | 5280 | rpc_put_task_async(task); |
3110ff80 | 5281 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5282 | } else |
5283 | nfs_free_seqid(data->arg.lock_seqid); | |
5284 | nfs4_put_lock_state(data->lsp); | |
5285 | put_nfs_open_context(data->ctx); | |
5286 | kfree(data); | |
3110ff80 | 5287 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5288 | } |
5289 | ||
5290 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5291 | .rpc_call_prepare = nfs4_lock_prepare, | |
5292 | .rpc_call_done = nfs4_lock_done, | |
5293 | .rpc_release = nfs4_lock_release, | |
5294 | }; | |
5295 | ||
2bee72a6 TM |
5296 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5297 | { | |
2bee72a6 TM |
5298 | switch (error) { |
5299 | case -NFS4ERR_ADMIN_REVOKED: | |
5300 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5301 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5302 | if (new_lock_owner != 0 || |
795a88c9 | 5303 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5304 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5305 | break; |
5306 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5307 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5308 | case -NFS4ERR_EXPIRED: |
5309 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5310 | }; |
5311 | } | |
5312 | ||
afe6c27c | 5313 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5314 | { |
5315 | struct nfs4_lockdata *data; | |
5316 | struct rpc_task *task; | |
5138fde0 TM |
5317 | struct rpc_message msg = { |
5318 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5319 | .rpc_cred = state->owner->so_cred, | |
5320 | }; | |
c970aa85 TM |
5321 | struct rpc_task_setup task_setup_data = { |
5322 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5323 | .rpc_message = &msg, |
c970aa85 | 5324 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5325 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5326 | .flags = RPC_TASK_ASYNC, |
5327 | }; | |
a5d16a4d TM |
5328 | int ret; |
5329 | ||
3110ff80 | 5330 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5331 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5332 | fl->fl_u.nfs4_fl.owner, |
5333 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5334 | if (data == NULL) |
5335 | return -ENOMEM; | |
5336 | if (IS_SETLKW(cmd)) | |
5337 | data->arg.block = 1; | |
9d12b216 | 5338 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5339 | msg.rpc_argp = &data->arg; |
5340 | msg.rpc_resp = &data->res; | |
c970aa85 | 5341 | task_setup_data.callback_data = data; |
8fe72bac TM |
5342 | if (recovery_type > NFS_LOCK_NEW) { |
5343 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5344 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5345 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5346 | } | |
c970aa85 | 5347 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5348 | if (IS_ERR(task)) |
a5d16a4d | 5349 | return PTR_ERR(task); |
a5d16a4d TM |
5350 | ret = nfs4_wait_for_completion_rpc_task(task); |
5351 | if (ret == 0) { | |
5352 | ret = data->rpc_status; | |
2bee72a6 TM |
5353 | if (ret) |
5354 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5355 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5356 | } else |
5357 | data->cancelled = 1; | |
e6b3c4db | 5358 | rpc_put_task(task); |
3110ff80 | 5359 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5360 | return ret; |
1da177e4 LT |
5361 | } |
5362 | ||
5363 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5364 | { | |
202b50dc | 5365 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5366 | struct nfs4_exception exception = { |
5367 | .inode = state->inode, | |
5368 | }; | |
202b50dc TM |
5369 | int err; |
5370 | ||
5371 | do { | |
42a2d13e TM |
5372 | /* Cache the lock if possible... */ |
5373 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5374 | return 0; | |
afe6c27c | 5375 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5376 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5377 | break; |
5378 | nfs4_handle_exception(server, err, &exception); | |
5379 | } while (exception.retry); | |
5380 | return err; | |
1da177e4 LT |
5381 | } |
5382 | ||
5383 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5384 | { | |
202b50dc | 5385 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5386 | struct nfs4_exception exception = { |
5387 | .inode = state->inode, | |
5388 | }; | |
202b50dc TM |
5389 | int err; |
5390 | ||
6bfc93ef TM |
5391 | err = nfs4_set_lock_state(state, request); |
5392 | if (err != 0) | |
5393 | return err; | |
202b50dc | 5394 | do { |
42a2d13e TM |
5395 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5396 | return 0; | |
afe6c27c | 5397 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
5398 | switch (err) { |
5399 | default: | |
5400 | goto out; | |
5401 | case -NFS4ERR_GRACE: | |
5402 | case -NFS4ERR_DELAY: | |
5403 | nfs4_handle_exception(server, err, &exception); | |
5404 | err = 0; | |
5405 | } | |
202b50dc | 5406 | } while (exception.retry); |
a9ed2e25 | 5407 | out: |
202b50dc | 5408 | return err; |
1da177e4 LT |
5409 | } |
5410 | ||
f062eb6c | 5411 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5412 | /** |
5413 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5414 | * | |
5415 | * @state: NFSv4 state for an inode | |
5416 | * | |
5417 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5418 | * Otherwise a negative NFS4ERR value is returned. | |
5419 | */ | |
b01dd1d8 | 5420 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5421 | { |
eb64cf96 | 5422 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5423 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5424 | struct nfs_server *server = NFS_SERVER(state->inode); |
5425 | ||
b01dd1d8 | 5426 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5427 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5428 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5429 | ||
5430 | status = nfs41_test_stateid(server, | |
5431 | &lsp->ls_stateid, | |
5432 | cred); | |
b01dd1d8 | 5433 | if (status != NFS_OK) { |
3e60ffdd CL |
5434 | /* Free the stateid unless the server |
5435 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5436 | if (status != -NFS4ERR_BAD_STATEID) |
5437 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5438 | &lsp->ls_stateid, |
5439 | cred); | |
795a88c9 | 5440 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5441 | ret = status; |
5442 | } | |
5443 | } | |
5444 | }; | |
5445 | ||
5446 | return ret; | |
5447 | } | |
5448 | ||
5449 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5450 | { | |
5451 | int status = NFS_OK; | |
5452 | ||
5453 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5454 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5455 | if (status != NFS_OK) |
5456 | status = nfs4_lock_expired(state, request); | |
5457 | return status; | |
f062eb6c BS |
5458 | } |
5459 | #endif | |
5460 | ||
1da177e4 LT |
5461 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5462 | { | |
9a99af49 | 5463 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5464 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5465 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5466 | unsigned int seq; |
8e469ebd | 5467 | int status = -ENOLCK; |
1da177e4 | 5468 | |
8e469ebd TM |
5469 | if ((fl_flags & FL_POSIX) && |
5470 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5471 | goto out; | |
6bfc93ef | 5472 | /* Is this a delegated open? */ |
6bfc93ef TM |
5473 | status = nfs4_set_lock_state(state, request); |
5474 | if (status != 0) | |
5475 | goto out; | |
01c3b861 TM |
5476 | request->fl_flags |= FL_ACCESS; |
5477 | status = do_vfs_lock(request->fl_file, request); | |
5478 | if (status < 0) | |
5479 | goto out; | |
19e03c57 | 5480 | down_read(&nfsi->rwsem); |
01c3b861 | 5481 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5482 | /* Yes: cache locks! */ |
01c3b861 | 5483 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5484 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5485 | status = do_vfs_lock(request->fl_file, request); | |
5486 | goto out_unlock; | |
01c3b861 | 5487 | } |
9a99af49 TM |
5488 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5489 | up_read(&nfsi->rwsem); | |
afe6c27c | 5490 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5491 | if (status != 0) |
9a99af49 TM |
5492 | goto out; |
5493 | down_read(&nfsi->rwsem); | |
5494 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5495 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5496 | goto out_unlock; |
9a99af49 | 5497 | } |
6bfc93ef | 5498 | /* Note: we always want to sleep here! */ |
01c3b861 | 5499 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5500 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5501 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5502 | "manager!\n", __func__); | |
01c3b861 | 5503 | out_unlock: |
19e03c57 | 5504 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5505 | out: |
5506 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5507 | return status; |
5508 | } | |
5509 | ||
5510 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5511 | { | |
a1d0b5ee TM |
5512 | struct nfs4_exception exception = { |
5513 | .state = state, | |
05ffe24f | 5514 | .inode = state->inode, |
a1d0b5ee | 5515 | }; |
1da177e4 LT |
5516 | int err; |
5517 | ||
5518 | do { | |
965b5d67 TM |
5519 | err = _nfs4_proc_setlk(state, cmd, request); |
5520 | if (err == -NFS4ERR_DENIED) | |
5521 | err = -EAGAIN; | |
1da177e4 | 5522 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5523 | err, &exception); |
1da177e4 LT |
5524 | } while (exception.retry); |
5525 | return err; | |
5526 | } | |
5527 | ||
5528 | static int | |
5529 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5530 | { | |
5531 | struct nfs_open_context *ctx; | |
5532 | struct nfs4_state *state; | |
5533 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5534 | int status; | |
5535 | ||
5536 | /* verify open state */ | |
cd3758e3 | 5537 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5538 | state = ctx->state; |
5539 | ||
5540 | if (request->fl_start < 0 || request->fl_end < 0) | |
5541 | return -EINVAL; | |
5542 | ||
d953126a TM |
5543 | if (IS_GETLK(cmd)) { |
5544 | if (state != NULL) | |
5545 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5546 | return 0; | |
5547 | } | |
1da177e4 LT |
5548 | |
5549 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5550 | return -EINVAL; | |
5551 | ||
d953126a TM |
5552 | if (request->fl_type == F_UNLCK) { |
5553 | if (state != NULL) | |
5554 | return nfs4_proc_unlck(state, cmd, request); | |
5555 | return 0; | |
5556 | } | |
1da177e4 | 5557 | |
d953126a TM |
5558 | if (state == NULL) |
5559 | return -ENOLCK; | |
55725513 TM |
5560 | /* |
5561 | * Don't rely on the VFS having checked the file open mode, | |
5562 | * since it won't do this for flock() locks. | |
5563 | */ | |
f44106e2 | 5564 | switch (request->fl_type) { |
55725513 TM |
5565 | case F_RDLCK: |
5566 | if (!(filp->f_mode & FMODE_READ)) | |
5567 | return -EBADF; | |
5568 | break; | |
5569 | case F_WRLCK: | |
5570 | if (!(filp->f_mode & FMODE_WRITE)) | |
5571 | return -EBADF; | |
5572 | } | |
5573 | ||
1da177e4 LT |
5574 | do { |
5575 | status = nfs4_proc_setlk(state, cmd, request); | |
5576 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5577 | break; | |
5578 | timeout = nfs4_set_lock_task_retry(timeout); | |
5579 | status = -ERESTARTSYS; | |
5580 | if (signalled()) | |
5581 | break; | |
5582 | } while(status < 0); | |
1da177e4 LT |
5583 | return status; |
5584 | } | |
5585 | ||
db4f2e63 | 5586 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5587 | { |
5588 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5589 | int err; |
5590 | ||
5591 | err = nfs4_set_lock_state(state, fl); | |
5592 | if (err != 0) | |
db4f2e63 | 5593 | return err; |
4a706fa0 | 5594 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5595 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5596 | } |
6b3b5496 | 5597 | |
cf470c3e TM |
5598 | struct nfs_release_lockowner_data { |
5599 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5600 | struct nfs_server *server; |
cf470c3e TM |
5601 | struct nfs_release_lockowner_args args; |
5602 | }; | |
5603 | ||
d3c7b7cc TM |
5604 | static void nfs4_release_lockowner_release(void *calldata) |
5605 | { | |
cf470c3e | 5606 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5607 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5608 | kfree(calldata); |
5609 | } | |
5610 | ||
17280175 | 5611 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5612 | .rpc_release = nfs4_release_lockowner_release, |
5613 | }; | |
5614 | ||
c8b2d0bf | 5615 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5616 | { |
cf470c3e | 5617 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5618 | struct rpc_message msg = { |
5619 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5620 | }; | |
5621 | ||
5622 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5623 | return -EINVAL; |
5624 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5625 | if (!data) | |
5626 | return -ENOMEM; | |
5627 | data->lsp = lsp; | |
5ae67c4f | 5628 | data->server = server; |
cf470c3e TM |
5629 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5630 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5631 | data->args.lock_owner.s_dev = server->s_dev; | |
5632 | msg.rpc_argp = &data->args; | |
5633 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5634 | return 0; | |
d3c7b7cc TM |
5635 | } |
5636 | ||
aa1870af BF |
5637 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5638 | ||
64c2ce8b AK |
5639 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5640 | const void *buf, size_t buflen, | |
5641 | int flags, int type) | |
6b3b5496 | 5642 | { |
64c2ce8b AK |
5643 | if (strcmp(key, "") != 0) |
5644 | return -EINVAL; | |
4b580ee3 | 5645 | |
64c2ce8b | 5646 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5647 | } |
5648 | ||
64c2ce8b AK |
5649 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5650 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5651 | { |
64c2ce8b AK |
5652 | if (strcmp(key, "") != 0) |
5653 | return -EINVAL; | |
aa1870af | 5654 | |
64c2ce8b | 5655 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5656 | } |
5657 | ||
64c2ce8b AK |
5658 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5659 | size_t list_len, const char *name, | |
5660 | size_t name_len, int type) | |
6b3b5496 | 5661 | { |
64c2ce8b | 5662 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5663 | |
096455a2 BF |
5664 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5665 | return 0; | |
64c2ce8b AK |
5666 | |
5667 | if (list && len <= list_len) | |
5668 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5669 | return len; |
6b3b5496 BF |
5670 | } |
5671 | ||
c9bccef6 DQ |
5672 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5673 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5674 | { | |
5675 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5676 | } | |
5677 | ||
5678 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5679 | const void *buf, size_t buflen, | |
5680 | int flags, int type) | |
5681 | { | |
5682 | if (security_ismaclabel(key)) | |
5683 | return nfs4_set_security_label(dentry, buf, buflen); | |
5684 | ||
5685 | return -EOPNOTSUPP; | |
5686 | } | |
5687 | ||
5688 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5689 | void *buf, size_t buflen, int type) | |
5690 | { | |
5691 | if (security_ismaclabel(key)) | |
5692 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5693 | return -EOPNOTSUPP; | |
5694 | } | |
5695 | ||
5696 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5697 | size_t list_len, const char *name, | |
5698 | size_t name_len, int type) | |
5699 | { | |
5700 | size_t len = 0; | |
5701 | ||
5702 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5703 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5704 | if (list && len <= list_len) | |
5705 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5706 | } | |
5707 | return len; | |
5708 | } | |
5709 | ||
5710 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5711 | .prefix = XATTR_SECURITY_PREFIX, | |
5712 | .list = nfs4_xattr_list_nfs4_label, | |
5713 | .get = nfs4_xattr_get_nfs4_label, | |
5714 | .set = nfs4_xattr_set_nfs4_label, | |
5715 | }; | |
5716 | #endif | |
5717 | ||
5718 | ||
533eb461 AA |
5719 | /* |
5720 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5721 | */ | |
69aaaae1 TM |
5722 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5723 | { | |
533eb461 AA |
5724 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5725 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5726 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5727 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5728 | return; |
5729 | ||
5730 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5731 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5732 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5733 | fattr->nlink = 2; | |
5734 | } | |
5735 | ||
f05d147f BS |
5736 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5737 | const struct qstr *name, | |
5738 | struct nfs4_fs_locations *fs_locations, | |
5739 | struct page *page) | |
683b57b4 TM |
5740 | { |
5741 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5742 | u32 bitmask[3] = { |
361e624f | 5743 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5744 | }; |
5745 | struct nfs4_fs_locations_arg args = { | |
5746 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5747 | .name = name, |
683b57b4 TM |
5748 | .page = page, |
5749 | .bitmask = bitmask, | |
5750 | }; | |
22958463 BH |
5751 | struct nfs4_fs_locations_res res = { |
5752 | .fs_locations = fs_locations, | |
5753 | }; | |
683b57b4 TM |
5754 | struct rpc_message msg = { |
5755 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5756 | .rpc_argp = &args, | |
22958463 | 5757 | .rpc_resp = &res, |
683b57b4 TM |
5758 | }; |
5759 | int status; | |
5760 | ||
3110ff80 | 5761 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5762 | |
5763 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5764 | * is not supported */ | |
5765 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5766 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5767 | else | |
5768 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5769 | ||
c228fd3a | 5770 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5771 | fs_locations->server = server; |
830b8e33 | 5772 | fs_locations->nlocations = 0; |
f05d147f | 5773 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5774 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5775 | return status; |
5776 | } | |
5777 | ||
f05d147f BS |
5778 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5779 | const struct qstr *name, | |
5780 | struct nfs4_fs_locations *fs_locations, | |
5781 | struct page *page) | |
db0a9593 BS |
5782 | { |
5783 | struct nfs4_exception exception = { }; | |
5784 | int err; | |
5785 | do { | |
5786 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5787 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5788 | &exception); |
5789 | } while (exception.retry); | |
5790 | return err; | |
5791 | } | |
5792 | ||
5a5ea0d4 BS |
5793 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5794 | { | |
5795 | int status; | |
5796 | struct nfs4_secinfo_arg args = { | |
5797 | .dir_fh = NFS_FH(dir), | |
5798 | .name = name, | |
5799 | }; | |
5800 | struct nfs4_secinfo_res res = { | |
5801 | .flavors = flavors, | |
5802 | }; | |
5803 | struct rpc_message msg = { | |
5804 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5805 | .rpc_argp = &args, | |
5806 | .rpc_resp = &res, | |
5807 | }; | |
5808 | ||
5809 | dprintk("NFS call secinfo %s\n", name->name); | |
5810 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5811 | dprintk("NFS reply secinfo: %d\n", status); | |
5812 | return status; | |
5813 | } | |
5814 | ||
72de53ec BS |
5815 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5816 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5817 | { |
5818 | struct nfs4_exception exception = { }; | |
5819 | int err; | |
5820 | do { | |
5821 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5822 | _nfs4_proc_secinfo(dir, name, flavors), | |
5823 | &exception); | |
5824 | } while (exception.retry); | |
5825 | return err; | |
5826 | } | |
5827 | ||
557134a3 | 5828 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5829 | /* |
5830 | * Check the exchange flags returned by the server for invalid flags, having | |
5831 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5832 | * DS flags set. | |
5833 | */ | |
5834 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5835 | { | |
5836 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5837 | goto out_inval; | |
5838 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5839 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5840 | goto out_inval; | |
5841 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5842 | goto out_inval; | |
5843 | return NFS_OK; | |
5844 | out_inval: | |
5845 | return -NFS4ERR_INVAL; | |
5846 | } | |
5847 | ||
78fe0f41 | 5848 | static bool |
79d4e1f0 CL |
5849 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5850 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5851 | { |
5852 | if (a->server_scope_sz == b->server_scope_sz && | |
5853 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5854 | return true; | |
5855 | ||
5856 | return false; | |
5857 | } | |
5858 | ||
7c44f1ae WAA |
5859 | /* |
5860 | * nfs4_proc_bind_conn_to_session() | |
5861 | * | |
5862 | * The 4.1 client currently uses the same TCP connection for the | |
5863 | * fore and backchannel. | |
5864 | */ | |
2cf047c9 | 5865 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5866 | { |
5867 | int status; | |
5868 | struct nfs41_bind_conn_to_session_res res; | |
5869 | struct rpc_message msg = { | |
5870 | .rpc_proc = | |
5871 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5872 | .rpc_argp = clp, | |
5873 | .rpc_resp = &res, | |
2cf047c9 | 5874 | .rpc_cred = cred, |
7c44f1ae WAA |
5875 | }; |
5876 | ||
5877 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5878 | |
5879 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5880 | if (unlikely(res.session == NULL)) { | |
5881 | status = -ENOMEM; | |
5882 | goto out; | |
5883 | } | |
5884 | ||
5885 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5886 | if (status == 0) { | |
5887 | if (memcmp(res.session->sess_id.data, | |
5888 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5889 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5890 | status = -EIO; | |
5891 | goto out_session; | |
5892 | } | |
5893 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5894 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5895 | __func__); | |
5896 | status = -EIO; | |
5897 | goto out_session; | |
5898 | } | |
5899 | if (res.use_conn_in_rdma_mode) { | |
5900 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5901 | __func__); | |
5902 | status = -EIO; | |
5903 | goto out_session; | |
5904 | } | |
5905 | } | |
5906 | out_session: | |
5907 | kfree(res.session); | |
5908 | out: | |
5909 | dprintk("<-- %s status= %d\n", __func__, status); | |
5910 | return status; | |
5911 | } | |
5912 | ||
99fe60d0 BH |
5913 | /* |
5914 | * nfs4_proc_exchange_id() | |
5915 | * | |
6bbb4ae8 CL |
5916 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5917 | * | |
99fe60d0 BH |
5918 | * Since the clientid has expired, all compounds using sessions |
5919 | * associated with the stale clientid will be returning | |
5920 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5921 | * be in some phase of session reset. | |
5922 | */ | |
4d643d1d | 5923 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5924 | { |
5925 | nfs4_verifier verifier; | |
5926 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5927 | .verifier = &verifier, |
99fe60d0 | 5928 | .client = clp, |
4f0b429d TM |
5929 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
5930 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
5931 | }; |
5932 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5933 | 0 |
99fe60d0 BH |
5934 | }; |
5935 | int status; | |
5936 | struct rpc_message msg = { | |
5937 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5938 | .rpc_argp = &args, | |
5939 | .rpc_resp = &res, | |
5940 | .rpc_cred = cred, | |
5941 | }; | |
99fe60d0 | 5942 | |
f092075d | 5943 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5944 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5945 | sizeof(args.id)); | |
6bbb4ae8 CL |
5946 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5947 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5948 | args.id_len, args.id); | |
99fe60d0 | 5949 | |
acdeb69d | 5950 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5951 | GFP_NOFS); |
acdeb69d | 5952 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5953 | status = -ENOMEM; |
5954 | goto out; | |
5955 | } | |
78fe0f41 | 5956 | |
79d4e1f0 | 5957 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5958 | GFP_NOFS); |
177313f1 | 5959 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5960 | status = -ENOMEM; |
acdeb69d | 5961 | goto out_server_owner; |
abe9a6d5 | 5962 | } |
78fe0f41 | 5963 | |
bbafffd2 | 5964 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5965 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5966 | status = -ENOMEM; |
5967 | goto out_server_scope; | |
5968 | } | |
5969 | ||
1bd714f2 | 5970 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5971 | if (status == 0) |
32b01310 | 5972 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5973 | |
acdeb69d | 5974 | if (status == 0) { |
32b01310 TM |
5975 | clp->cl_clientid = res.clientid; |
5976 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5977 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5978 | clp->cl_seqid = res.seqid; | |
5979 | ||
acdeb69d CL |
5980 | kfree(clp->cl_serverowner); |
5981 | clp->cl_serverowner = res.server_owner; | |
5982 | res.server_owner = NULL; | |
78fe0f41 | 5983 | |
7d2ed9ac | 5984 | /* use the most recent implementation id */ |
59155546 CL |
5985 | kfree(clp->cl_implid); |
5986 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5987 | |
177313f1 | 5988 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5989 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5990 | res.server_scope)) { |
5991 | dprintk("%s: server_scope mismatch detected\n", | |
5992 | __func__); | |
5993 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5994 | kfree(clp->cl_serverscope); |
5995 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5996 | } |
5997 | ||
177313f1 | 5998 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5999 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6000 | goto out; |
6001 | } | |
32b01310 TM |
6002 | } else |
6003 | kfree(res.impl_id); | |
7d2ed9ac | 6004 | |
acdeb69d CL |
6005 | out_server_owner: |
6006 | kfree(res.server_owner); | |
7d2ed9ac | 6007 | out_server_scope: |
abe9a6d5 WAA |
6008 | kfree(res.server_scope); |
6009 | out: | |
177313f1 | 6010 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6011 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6012 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6013 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6014 | clp->cl_implid->date.seconds, |
6015 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6016 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6017 | return status; |
6018 | } | |
6019 | ||
66245539 TM |
6020 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6021 | struct rpc_cred *cred) | |
6022 | { | |
6023 | struct rpc_message msg = { | |
6024 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6025 | .rpc_argp = clp, | |
6026 | .rpc_cred = cred, | |
6027 | }; | |
6028 | int status; | |
6029 | ||
6030 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
6031 | if (status) | |
02c67525 | 6032 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6033 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6034 | return status; | |
6035 | } | |
6036 | ||
6037 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6038 | struct rpc_cred *cred) | |
6039 | { | |
6040 | unsigned int loop; | |
6041 | int ret; | |
6042 | ||
6043 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6044 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6045 | switch (ret) { | |
6046 | case -NFS4ERR_DELAY: | |
6047 | case -NFS4ERR_CLIENTID_BUSY: | |
6048 | ssleep(1); | |
6049 | break; | |
6050 | default: | |
6051 | return ret; | |
6052 | } | |
6053 | } | |
6054 | return 0; | |
6055 | } | |
6056 | ||
6057 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6058 | { | |
6059 | struct rpc_cred *cred; | |
6060 | int ret = 0; | |
6061 | ||
6062 | if (clp->cl_mvops->minor_version < 1) | |
6063 | goto out; | |
6064 | if (clp->cl_exchange_flags == 0) | |
6065 | goto out; | |
05f4c350 CL |
6066 | if (clp->cl_preserve_clid) |
6067 | goto out; | |
66245539 TM |
6068 | cred = nfs4_get_exchange_id_cred(clp); |
6069 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
6070 | if (cred) | |
6071 | put_rpccred(cred); | |
6072 | switch (ret) { | |
6073 | case 0: | |
6074 | case -NFS4ERR_STALE_CLIENTID: | |
6075 | clp->cl_exchange_flags = 0; | |
6076 | } | |
6077 | out: | |
6078 | return ret; | |
6079 | } | |
6080 | ||
2050f0cc AA |
6081 | struct nfs4_get_lease_time_data { |
6082 | struct nfs4_get_lease_time_args *args; | |
6083 | struct nfs4_get_lease_time_res *res; | |
6084 | struct nfs_client *clp; | |
6085 | }; | |
6086 | ||
6087 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6088 | void *calldata) | |
6089 | { | |
2050f0cc AA |
6090 | struct nfs4_get_lease_time_data *data = |
6091 | (struct nfs4_get_lease_time_data *)calldata; | |
6092 | ||
6093 | dprintk("--> %s\n", __func__); | |
6094 | /* just setup sequence, do not trigger session recovery | |
6095 | since we're invoked within one */ | |
d9afbd1b TM |
6096 | nfs41_setup_sequence(data->clp->cl_session, |
6097 | &data->args->la_seq_args, | |
6098 | &data->res->lr_seq_res, | |
6099 | task); | |
2050f0cc AA |
6100 | dprintk("<-- %s\n", __func__); |
6101 | } | |
6102 | ||
6103 | /* | |
6104 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6105 | * from sequence operation or clientid errors. | |
6106 | */ | |
6107 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6108 | { | |
6109 | struct nfs4_get_lease_time_data *data = | |
6110 | (struct nfs4_get_lease_time_data *)calldata; | |
6111 | ||
6112 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6113 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6114 | return; | |
2050f0cc AA |
6115 | switch (task->tk_status) { |
6116 | case -NFS4ERR_DELAY: | |
6117 | case -NFS4ERR_GRACE: | |
6118 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6119 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6120 | task->tk_status = 0; | |
a8a4ae3a AA |
6121 | /* fall through */ |
6122 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6123 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6124 | return; |
6125 | } | |
2050f0cc AA |
6126 | dprintk("<-- %s\n", __func__); |
6127 | } | |
6128 | ||
17280175 | 6129 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6130 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6131 | .rpc_call_done = nfs4_get_lease_time_done, | |
6132 | }; | |
6133 | ||
6134 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6135 | { | |
6136 | struct rpc_task *task; | |
6137 | struct nfs4_get_lease_time_args args; | |
6138 | struct nfs4_get_lease_time_res res = { | |
6139 | .lr_fsinfo = fsinfo, | |
6140 | }; | |
6141 | struct nfs4_get_lease_time_data data = { | |
6142 | .args = &args, | |
6143 | .res = &res, | |
6144 | .clp = clp, | |
6145 | }; | |
6146 | struct rpc_message msg = { | |
6147 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6148 | .rpc_argp = &args, | |
6149 | .rpc_resp = &res, | |
6150 | }; | |
6151 | struct rpc_task_setup task_setup = { | |
6152 | .rpc_client = clp->cl_rpcclient, | |
6153 | .rpc_message = &msg, | |
6154 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6155 | .callback_data = &data, |
6156 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6157 | }; |
6158 | int status; | |
6159 | ||
9d12b216 | 6160 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6161 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6162 | dprintk("--> %s\n", __func__); |
6163 | task = rpc_run_task(&task_setup); | |
6164 | ||
6165 | if (IS_ERR(task)) | |
6166 | status = PTR_ERR(task); | |
6167 | else { | |
6168 | status = task->tk_status; | |
6169 | rpc_put_task(task); | |
6170 | } | |
6171 | dprintk("<-- %s return %d\n", __func__, status); | |
6172 | ||
6173 | return status; | |
6174 | } | |
6175 | ||
fc931582 AA |
6176 | /* |
6177 | * Initialize the values to be used by the client in CREATE_SESSION | |
6178 | * If nfs4_init_session set the fore channel request and response sizes, | |
6179 | * use them. | |
6180 | * | |
6181 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6182 | * always set csa_cachethis to FALSE because the current implementation | |
6183 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6184 | */ | |
6185 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6186 | { | |
18aad3d5 AA |
6187 | unsigned int max_rqst_sz, max_resp_sz; |
6188 | ||
6189 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6190 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6191 | |
fc931582 | 6192 | /* Fore channel attributes */ |
18aad3d5 AA |
6193 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6194 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6195 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6196 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6197 | |
6198 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6199 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6200 | __func__, |
6201 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6202 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6203 | |
6204 | /* Back channel attributes */ | |
fc931582 AA |
6205 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6206 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6207 | args->bc_attrs.max_resp_sz_cached = 0; | |
6208 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6209 | args->bc_attrs.max_reqs = 1; | |
6210 | ||
6211 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6212 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6213 | __func__, | |
6214 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6215 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6216 | args->bc_attrs.max_reqs); | |
6217 | } | |
6218 | ||
43c2e885 | 6219 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6220 | { |
43c2e885 BF |
6221 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6222 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6223 | ||
43c2e885 BF |
6224 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6225 | return -EINVAL; | |
6226 | /* | |
6227 | * Our requested max_ops is the minimum we need; we're not | |
6228 | * prepared to break up compounds into smaller pieces than that. | |
6229 | * So, no point even trying to continue if the server won't | |
6230 | * cooperate: | |
6231 | */ | |
6232 | if (rcvd->max_ops < sent->max_ops) | |
6233 | return -EINVAL; | |
6234 | if (rcvd->max_reqs == 0) | |
6235 | return -EINVAL; | |
b4b9a0c1 VG |
6236 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6237 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 6238 | return 0; |
8d35301d AA |
6239 | } |
6240 | ||
43c2e885 BF |
6241 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
6242 | { | |
6243 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
6244 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 6245 | |
43c2e885 BF |
6246 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
6247 | return -EINVAL; | |
6248 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
6249 | return -EINVAL; | |
6250 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
6251 | return -EINVAL; | |
6252 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 6253 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 6254 | return -EINVAL; |
b4b9a0c1 | 6255 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
6256 | return -EINVAL; |
6257 | return 0; | |
6258 | } | |
8d35301d | 6259 | |
8d35301d AA |
6260 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6261 | struct nfs4_session *session) | |
6262 | { | |
43c2e885 | 6263 | int ret; |
8d35301d | 6264 | |
43c2e885 BF |
6265 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6266 | if (ret) | |
6267 | return ret; | |
6268 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6269 | } |
6270 | ||
848f5bda TM |
6271 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6272 | struct rpc_cred *cred) | |
fc931582 AA |
6273 | { |
6274 | struct nfs4_session *session = clp->cl_session; | |
6275 | struct nfs41_create_session_args args = { | |
6276 | .client = clp, | |
6277 | .cb_program = NFS4_CALLBACK, | |
6278 | }; | |
6279 | struct nfs41_create_session_res res = { | |
6280 | .client = clp, | |
6281 | }; | |
6282 | struct rpc_message msg = { | |
6283 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6284 | .rpc_argp = &args, | |
6285 | .rpc_resp = &res, | |
848f5bda | 6286 | .rpc_cred = cred, |
fc931582 AA |
6287 | }; |
6288 | int status; | |
6289 | ||
6290 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6291 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6292 | |
1bd714f2 | 6293 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 6294 | |
43095d39 | 6295 | if (!status) { |
8d35301d AA |
6296 | /* Verify the session's negotiated channel_attrs values */ |
6297 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6298 | /* Increment the clientid slot sequence id */ |
6299 | clp->cl_seqid++; | |
6300 | } | |
6301 | ||
6302 | return status; | |
6303 | } | |
6304 | ||
6305 | /* | |
6306 | * Issues a CREATE_SESSION operation to the server. | |
6307 | * It is the responsibility of the caller to verify the session is | |
6308 | * expired before calling this routine. | |
6309 | */ | |
848f5bda | 6310 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6311 | { |
6312 | int status; | |
6313 | unsigned *ptr; | |
fc931582 AA |
6314 | struct nfs4_session *session = clp->cl_session; |
6315 | ||
6316 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6317 | ||
848f5bda | 6318 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6319 | if (status) |
6320 | goto out; | |
6321 | ||
aacd5537 AA |
6322 | /* Init or reset the session slot tables */ |
6323 | status = nfs4_setup_session_slot_tables(session); | |
6324 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6325 | if (status) |
6326 | goto out; | |
6327 | ||
6328 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6329 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6330 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6331 | out: |
6332 | dprintk("<-- %s\n", __func__); | |
6333 | return status; | |
6334 | } | |
6335 | ||
0f3e66c6 AA |
6336 | /* |
6337 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6338 | * The caller must serialize access to this routine. | |
6339 | */ | |
848f5bda TM |
6340 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6341 | struct rpc_cred *cred) | |
0f3e66c6 | 6342 | { |
848f5bda TM |
6343 | struct rpc_message msg = { |
6344 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6345 | .rpc_argp = session, | |
6346 | .rpc_cred = cred, | |
6347 | }; | |
0f3e66c6 | 6348 | int status = 0; |
0f3e66c6 AA |
6349 | |
6350 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6351 | ||
6352 | /* session is still being setup */ | |
6353 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6354 | return status; | |
6355 | ||
1bd714f2 | 6356 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
6357 | |
6358 | if (status) | |
08106ac7 | 6359 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6360 | "Session has been destroyed regardless...\n", status); |
6361 | ||
6362 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6363 | return status; | |
6364 | } | |
6365 | ||
fc01cea9 AA |
6366 | /* |
6367 | * Renew the cl_session lease. | |
6368 | */ | |
d5f8d3fe TM |
6369 | struct nfs4_sequence_data { |
6370 | struct nfs_client *clp; | |
6371 | struct nfs4_sequence_args args; | |
6372 | struct nfs4_sequence_res res; | |
6373 | }; | |
6374 | ||
dc96aef9 AB |
6375 | static void nfs41_sequence_release(void *data) |
6376 | { | |
d5f8d3fe TM |
6377 | struct nfs4_sequence_data *calldata = data; |
6378 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6379 | |
7135840f AB |
6380 | if (atomic_read(&clp->cl_count) > 1) |
6381 | nfs4_schedule_state_renewal(clp); | |
6382 | nfs_put_client(clp); | |
d5f8d3fe | 6383 | kfree(calldata); |
dc96aef9 AB |
6384 | } |
6385 | ||
aa5190d0 TM |
6386 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6387 | { | |
6388 | switch(task->tk_status) { | |
6389 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6390 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6391 | return -EAGAIN; | |
6392 | default: | |
0400a6b0 | 6393 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6394 | } |
6395 | return 0; | |
6396 | } | |
6397 | ||
dc96aef9 | 6398 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6399 | { |
d5f8d3fe TM |
6400 | struct nfs4_sequence_data *calldata = data; |
6401 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6402 | |
14516c3a TM |
6403 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6404 | return; | |
fc01cea9 AA |
6405 | |
6406 | if (task->tk_status < 0) { | |
6407 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6408 | if (atomic_read(&clp->cl_count) == 1) |
6409 | goto out; | |
fc01cea9 | 6410 | |
aa5190d0 TM |
6411 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6412 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6413 | return; |
6414 | } | |
6415 | } | |
fc01cea9 | 6416 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6417 | out: |
fc01cea9 AA |
6418 | dprintk("<-- %s\n", __func__); |
6419 | } | |
6420 | ||
6421 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6422 | { | |
d5f8d3fe TM |
6423 | struct nfs4_sequence_data *calldata = data; |
6424 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6425 | struct nfs4_sequence_args *args; |
6426 | struct nfs4_sequence_res *res; | |
6427 | ||
fc01cea9 AA |
6428 | args = task->tk_msg.rpc_argp; |
6429 | res = task->tk_msg.rpc_resp; | |
6430 | ||
d9afbd1b | 6431 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6432 | } |
6433 | ||
6434 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6435 | .rpc_call_done = nfs41_sequence_call_done, | |
6436 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6437 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6438 | }; |
6439 | ||
8fe72bac TM |
6440 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6441 | struct rpc_cred *cred, | |
6442 | bool is_privileged) | |
fc01cea9 | 6443 | { |
d5f8d3fe | 6444 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6445 | struct rpc_message msg = { |
6446 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6447 | .rpc_cred = cred, | |
6448 | }; | |
71ac6da9 TM |
6449 | struct rpc_task_setup task_setup_data = { |
6450 | .rpc_client = clp->cl_rpcclient, | |
6451 | .rpc_message = &msg, | |
8fe72bac | 6452 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6453 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6454 | }; |
fc01cea9 | 6455 | |
7135840f | 6456 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6457 | return ERR_PTR(-EIO); |
dfb4f309 | 6458 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6459 | if (calldata == NULL) { |
7135840f | 6460 | nfs_put_client(clp); |
71ac6da9 | 6461 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6462 | } |
9d12b216 | 6463 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6464 | if (is_privileged) |
6465 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6466 | msg.rpc_argp = &calldata->args; |
6467 | msg.rpc_resp = &calldata->res; | |
6468 | calldata->clp = clp; | |
71ac6da9 | 6469 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6470 | |
71ac6da9 TM |
6471 | return rpc_run_task(&task_setup_data); |
6472 | } | |
6473 | ||
2f60ea6b | 6474 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6475 | { |
6476 | struct rpc_task *task; | |
6477 | int ret = 0; | |
6478 | ||
2f60ea6b TM |
6479 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6480 | return 0; | |
8fe72bac | 6481 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6482 | if (IS_ERR(task)) |
6483 | ret = PTR_ERR(task); | |
6484 | else | |
bf294b41 | 6485 | rpc_put_task_async(task); |
71ac6da9 TM |
6486 | dprintk("<-- %s status=%d\n", __func__, ret); |
6487 | return ret; | |
6488 | } | |
6489 | ||
6490 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6491 | { | |
6492 | struct rpc_task *task; | |
6493 | int ret; | |
6494 | ||
8fe72bac | 6495 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6496 | if (IS_ERR(task)) { |
6497 | ret = PTR_ERR(task); | |
6498 | goto out; | |
6499 | } | |
6500 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6501 | if (!ret) { |
6502 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6503 | ||
6504 | if (task->tk_status == 0) | |
6505 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6506 | ret = task->tk_status; |
b4410c2f | 6507 | } |
71ac6da9 TM |
6508 | rpc_put_task(task); |
6509 | out: | |
6510 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6511 | return ret; | |
fc01cea9 AA |
6512 | } |
6513 | ||
fce5c838 RL |
6514 | struct nfs4_reclaim_complete_data { |
6515 | struct nfs_client *clp; | |
6516 | struct nfs41_reclaim_complete_args arg; | |
6517 | struct nfs41_reclaim_complete_res res; | |
6518 | }; | |
6519 | ||
6520 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6521 | { | |
6522 | struct nfs4_reclaim_complete_data *calldata = data; | |
6523 | ||
d9afbd1b TM |
6524 | nfs41_setup_sequence(calldata->clp->cl_session, |
6525 | &calldata->arg.seq_args, | |
6526 | &calldata->res.seq_res, | |
6527 | task); | |
fce5c838 RL |
6528 | } |
6529 | ||
aa5190d0 TM |
6530 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6531 | { | |
6532 | switch(task->tk_status) { | |
6533 | case 0: | |
6534 | case -NFS4ERR_COMPLETE_ALREADY: | |
6535 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6536 | break; | |
6537 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6538 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6539 | /* fall through */ |
6540 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6541 | return -EAGAIN; |
6542 | default: | |
0400a6b0 | 6543 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6544 | } |
6545 | return 0; | |
6546 | } | |
6547 | ||
fce5c838 RL |
6548 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6549 | { | |
6550 | struct nfs4_reclaim_complete_data *calldata = data; | |
6551 | struct nfs_client *clp = calldata->clp; | |
6552 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6553 | ||
6554 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6555 | if (!nfs41_sequence_done(task, res)) |
6556 | return; | |
fce5c838 | 6557 | |
aa5190d0 TM |
6558 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6559 | rpc_restart_call_prepare(task); | |
6560 | return; | |
6561 | } | |
fce5c838 RL |
6562 | dprintk("<-- %s\n", __func__); |
6563 | } | |
6564 | ||
6565 | static void nfs4_free_reclaim_complete_data(void *data) | |
6566 | { | |
6567 | struct nfs4_reclaim_complete_data *calldata = data; | |
6568 | ||
6569 | kfree(calldata); | |
6570 | } | |
6571 | ||
6572 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6573 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6574 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6575 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6576 | }; | |
6577 | ||
6578 | /* | |
6579 | * Issue a global reclaim complete. | |
6580 | */ | |
965e9c23 TM |
6581 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6582 | struct rpc_cred *cred) | |
fce5c838 RL |
6583 | { |
6584 | struct nfs4_reclaim_complete_data *calldata; | |
6585 | struct rpc_task *task; | |
6586 | struct rpc_message msg = { | |
6587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6588 | .rpc_cred = cred, |
fce5c838 RL |
6589 | }; |
6590 | struct rpc_task_setup task_setup_data = { | |
6591 | .rpc_client = clp->cl_rpcclient, | |
6592 | .rpc_message = &msg, | |
6593 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6594 | .flags = RPC_TASK_ASYNC, | |
6595 | }; | |
6596 | int status = -ENOMEM; | |
6597 | ||
6598 | dprintk("--> %s\n", __func__); | |
8535b2be | 6599 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6600 | if (calldata == NULL) |
6601 | goto out; | |
6602 | calldata->clp = clp; | |
6603 | calldata->arg.one_fs = 0; | |
fce5c838 | 6604 | |
9d12b216 | 6605 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6606 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6607 | msg.rpc_argp = &calldata->arg; |
6608 | msg.rpc_resp = &calldata->res; | |
6609 | task_setup_data.callback_data = calldata; | |
6610 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6611 | if (IS_ERR(task)) { |
fce5c838 | 6612 | status = PTR_ERR(task); |
acf82b85 DC |
6613 | goto out; |
6614 | } | |
c34c32ea AA |
6615 | status = nfs4_wait_for_completion_rpc_task(task); |
6616 | if (status == 0) | |
6617 | status = task->tk_status; | |
fce5c838 | 6618 | rpc_put_task(task); |
acf82b85 | 6619 | return 0; |
fce5c838 RL |
6620 | out: |
6621 | dprintk("<-- %s status=%d\n", __func__, status); | |
6622 | return status; | |
6623 | } | |
b1f69b75 AA |
6624 | |
6625 | static void | |
6626 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6627 | { | |
6628 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6629 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6630 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6631 | |
6632 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6633 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6634 | * right now covering the LAYOUTGET we are about to send. | |
6635 | * However, that is not so catastrophic, and there seems | |
6636 | * to be no way to prevent it completely. | |
6637 | */ | |
6ba7db34 | 6638 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6639 | &lgp->res.seq_res, task)) |
b1f69b75 | 6640 | return; |
cf7d63f1 FI |
6641 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6642 | NFS_I(lgp->args.inode)->layout, | |
6643 | lgp->args.ctx->state)) { | |
6644 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6645 | } |
b1f69b75 AA |
6646 | } |
6647 | ||
6648 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6649 | { | |
6650 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6651 | struct inode *inode = lgp->args.inode; |
6652 | struct nfs_server *server = NFS_SERVER(inode); | |
6653 | struct pnfs_layout_hdr *lo; | |
6654 | struct nfs4_state *state = NULL; | |
30005121 | 6655 | unsigned long timeo, giveup; |
b1f69b75 AA |
6656 | |
6657 | dprintk("--> %s\n", __func__); | |
6658 | ||
6ba7db34 | 6659 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6660 | goto out; |
b1f69b75 AA |
6661 | |
6662 | switch (task->tk_status) { | |
6663 | case 0: | |
ee314c2a | 6664 | goto out; |
b1f69b75 AA |
6665 | case -NFS4ERR_LAYOUTTRYLATER: |
6666 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6667 | timeo = rpc_get_timeout(task->tk_client); |
6668 | giveup = lgp->args.timestamp + timeo; | |
6669 | if (time_after(giveup, jiffies)) | |
6670 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6671 | break; |
6672 | case -NFS4ERR_EXPIRED: | |
6673 | case -NFS4ERR_BAD_STATEID: | |
6674 | spin_lock(&inode->i_lock); | |
6675 | lo = NFS_I(inode)->layout; | |
6676 | if (!lo || list_empty(&lo->plh_segs)) { | |
6677 | spin_unlock(&inode->i_lock); | |
6678 | /* If the open stateid was bad, then recover it. */ | |
6679 | state = lgp->args.ctx->state; | |
6680 | } else { | |
6681 | LIST_HEAD(head); | |
6682 | ||
6683 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6684 | spin_unlock(&inode->i_lock); | |
6685 | /* Mark the bad layout state as invalid, then | |
6686 | * retry using the open stateid. */ | |
6687 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6688 | } |
6689 | } | |
ee314c2a TM |
6690 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6691 | rpc_restart_call_prepare(task); | |
6692 | out: | |
b1f69b75 AA |
6693 | dprintk("<-- %s\n", __func__); |
6694 | } | |
6695 | ||
8554116e IK |
6696 | static size_t max_response_pages(struct nfs_server *server) |
6697 | { | |
6698 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6699 | return nfs_page_array_len(0, max_resp_sz); | |
6700 | } | |
6701 | ||
6702 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6703 | { | |
6704 | int i; | |
6705 | ||
6706 | if (!pages) | |
6707 | return; | |
6708 | ||
6709 | for (i = 0; i < size; i++) { | |
6710 | if (!pages[i]) | |
6711 | break; | |
6712 | __free_page(pages[i]); | |
6713 | } | |
6714 | kfree(pages); | |
6715 | } | |
6716 | ||
6717 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6718 | { | |
6719 | struct page **pages; | |
6720 | int i; | |
6721 | ||
6722 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6723 | if (!pages) { | |
6724 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6725 | return NULL; | |
6726 | } | |
6727 | ||
6728 | for (i = 0; i < size; i++) { | |
6729 | pages[i] = alloc_page(gfp_flags); | |
6730 | if (!pages[i]) { | |
6731 | dprintk("%s: failed to allocate page\n", __func__); | |
6732 | nfs4_free_pages(pages, size); | |
6733 | return NULL; | |
6734 | } | |
6735 | } | |
6736 | ||
6737 | return pages; | |
6738 | } | |
6739 | ||
b1f69b75 AA |
6740 | static void nfs4_layoutget_release(void *calldata) |
6741 | { | |
6742 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6743 | struct inode *inode = lgp->args.inode; |
6744 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6745 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6746 | |
6747 | dprintk("--> %s\n", __func__); | |
8554116e | 6748 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6749 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6750 | put_nfs_open_context(lgp->args.ctx); |
6751 | kfree(calldata); | |
6752 | dprintk("<-- %s\n", __func__); | |
6753 | } | |
6754 | ||
6755 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6756 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6757 | .rpc_call_done = nfs4_layoutget_done, | |
6758 | .rpc_release = nfs4_layoutget_release, | |
6759 | }; | |
6760 | ||
a0b0a6e3 TM |
6761 | struct pnfs_layout_segment * |
6762 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6763 | { |
a47970ff WAA |
6764 | struct inode *inode = lgp->args.inode; |
6765 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6766 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6767 | struct rpc_task *task; |
6768 | struct rpc_message msg = { | |
6769 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6770 | .rpc_argp = &lgp->args, | |
6771 | .rpc_resp = &lgp->res, | |
6ab59344 | 6772 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
6773 | }; |
6774 | struct rpc_task_setup task_setup_data = { | |
6775 | .rpc_client = server->client, | |
6776 | .rpc_message = &msg, | |
6777 | .callback_ops = &nfs4_layoutget_call_ops, | |
6778 | .callback_data = lgp, | |
6779 | .flags = RPC_TASK_ASYNC, | |
6780 | }; | |
a0b0a6e3 | 6781 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6782 | int status = 0; |
6783 | ||
6784 | dprintk("--> %s\n", __func__); | |
6785 | ||
8554116e IK |
6786 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6787 | if (!lgp->args.layout.pages) { | |
6788 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6789 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6790 | } |
6791 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6792 | lgp->args.timestamp = jiffies; |
8554116e | 6793 | |
35124a09 | 6794 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6795 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6796 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6797 | |
6798 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6799 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6800 | ||
b1f69b75 AA |
6801 | task = rpc_run_task(&task_setup_data); |
6802 | if (IS_ERR(task)) | |
a0b0a6e3 | 6803 | return ERR_CAST(task); |
b1f69b75 | 6804 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6805 | if (status == 0) |
6806 | status = task->tk_status; | |
085b7a45 WAA |
6807 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6808 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6809 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6810 | rpc_put_task(task); |
6811 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6812 | if (status) |
6813 | return ERR_PTR(status); | |
6814 | return lseg; | |
b1f69b75 AA |
6815 | } |
6816 | ||
cbe82603 BH |
6817 | static void |
6818 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6819 | { | |
6820 | struct nfs4_layoutreturn *lrp = calldata; | |
6821 | ||
6822 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6823 | nfs41_setup_sequence(lrp->clp->cl_session, |
6824 | &lrp->args.seq_args, | |
6825 | &lrp->res.seq_res, | |
6826 | task); | |
cbe82603 BH |
6827 | } |
6828 | ||
6829 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6830 | { | |
6831 | struct nfs4_layoutreturn *lrp = calldata; | |
6832 | struct nfs_server *server; | |
6833 | ||
6834 | dprintk("--> %s\n", __func__); | |
6835 | ||
6ba7db34 | 6836 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6837 | return; |
6838 | ||
6839 | server = NFS_SERVER(lrp->args.inode); | |
6840 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6841 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6842 | return; |
6843 | } | |
cbe82603 BH |
6844 | dprintk("<-- %s\n", __func__); |
6845 | } | |
6846 | ||
6847 | static void nfs4_layoutreturn_release(void *calldata) | |
6848 | { | |
6849 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6850 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6851 | |
6852 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6853 | spin_lock(&lo->plh_inode->i_lock); |
6854 | if (lrp->res.lrs_present) | |
6855 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6856 | lo->plh_block_lgets--; | |
6857 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6858 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6859 | kfree(calldata); |
6860 | dprintk("<-- %s\n", __func__); | |
6861 | } | |
6862 | ||
6863 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6864 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6865 | .rpc_call_done = nfs4_layoutreturn_done, | |
6866 | .rpc_release = nfs4_layoutreturn_release, | |
6867 | }; | |
6868 | ||
6869 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6870 | { | |
6871 | struct rpc_task *task; | |
6872 | struct rpc_message msg = { | |
6873 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6874 | .rpc_argp = &lrp->args, | |
6875 | .rpc_resp = &lrp->res, | |
9556000d | 6876 | .rpc_cred = lrp->cred, |
cbe82603 BH |
6877 | }; |
6878 | struct rpc_task_setup task_setup_data = { | |
6879 | .rpc_client = lrp->clp->cl_rpcclient, | |
6880 | .rpc_message = &msg, | |
6881 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6882 | .callback_data = lrp, | |
6883 | }; | |
6884 | int status; | |
6885 | ||
6886 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6887 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6888 | task = rpc_run_task(&task_setup_data); |
6889 | if (IS_ERR(task)) | |
6890 | return PTR_ERR(task); | |
6891 | status = task->tk_status; | |
6892 | dprintk("<-- %s status=%d\n", __func__, status); | |
6893 | rpc_put_task(task); | |
6894 | return status; | |
6895 | } | |
6896 | ||
7f11d8d3 AA |
6897 | /* |
6898 | * Retrieve the list of Data Server devices from the MDS. | |
6899 | */ | |
6900 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6901 | const struct nfs_fh *fh, | |
6902 | struct pnfs_devicelist *devlist) | |
6903 | { | |
6904 | struct nfs4_getdevicelist_args args = { | |
6905 | .fh = fh, | |
6906 | .layoutclass = server->pnfs_curr_ld->id, | |
6907 | }; | |
6908 | struct nfs4_getdevicelist_res res = { | |
6909 | .devlist = devlist, | |
6910 | }; | |
6911 | struct rpc_message msg = { | |
6912 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6913 | .rpc_argp = &args, | |
6914 | .rpc_resp = &res, | |
6915 | }; | |
6916 | int status; | |
6917 | ||
6918 | dprintk("--> %s\n", __func__); | |
6919 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6920 | &res.seq_res, 0); | |
6921 | dprintk("<-- %s status=%d\n", __func__, status); | |
6922 | return status; | |
6923 | } | |
6924 | ||
6925 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6926 | const struct nfs_fh *fh, | |
6927 | struct pnfs_devicelist *devlist) | |
6928 | { | |
6929 | struct nfs4_exception exception = { }; | |
6930 | int err; | |
6931 | ||
6932 | do { | |
6933 | err = nfs4_handle_exception(server, | |
6934 | _nfs4_getdevicelist(server, fh, devlist), | |
6935 | &exception); | |
6936 | } while (exception.retry); | |
6937 | ||
6938 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6939 | err, devlist->num_devs); | |
6940 | ||
6941 | return err; | |
6942 | } | |
6943 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6944 | ||
b1f69b75 | 6945 | static int |
cd5875fe TM |
6946 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
6947 | struct pnfs_device *pdev, | |
6948 | struct rpc_cred *cred) | |
b1f69b75 AA |
6949 | { |
6950 | struct nfs4_getdeviceinfo_args args = { | |
6951 | .pdev = pdev, | |
6952 | }; | |
6953 | struct nfs4_getdeviceinfo_res res = { | |
6954 | .pdev = pdev, | |
6955 | }; | |
6956 | struct rpc_message msg = { | |
6957 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6958 | .rpc_argp = &args, | |
6959 | .rpc_resp = &res, | |
cd5875fe | 6960 | .rpc_cred = cred, |
b1f69b75 AA |
6961 | }; |
6962 | int status; | |
6963 | ||
6964 | dprintk("--> %s\n", __func__); | |
7c513058 | 6965 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6966 | dprintk("<-- %s status=%d\n", __func__, status); |
6967 | ||
6968 | return status; | |
6969 | } | |
6970 | ||
cd5875fe TM |
6971 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
6972 | struct pnfs_device *pdev, | |
6973 | struct rpc_cred *cred) | |
b1f69b75 AA |
6974 | { |
6975 | struct nfs4_exception exception = { }; | |
6976 | int err; | |
6977 | ||
6978 | do { | |
6979 | err = nfs4_handle_exception(server, | |
cd5875fe | 6980 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
6981 | &exception); |
6982 | } while (exception.retry); | |
6983 | return err; | |
6984 | } | |
6985 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6986 | ||
863a3c6c AA |
6987 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6988 | { | |
6989 | struct nfs4_layoutcommit_data *data = calldata; | |
6990 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6991 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6992 | |
d9afbd1b TM |
6993 | nfs41_setup_sequence(session, |
6994 | &data->args.seq_args, | |
6995 | &data->res.seq_res, | |
6996 | task); | |
863a3c6c AA |
6997 | } |
6998 | ||
6999 | static void | |
7000 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7001 | { | |
7002 | struct nfs4_layoutcommit_data *data = calldata; | |
7003 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7004 | ||
6ba7db34 | 7005 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7006 | return; |
7007 | ||
7008 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7009 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7010 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7011 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7012 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7013 | task->tk_status = 0; |
e59d27e0 TM |
7014 | break; |
7015 | case 0: | |
863a3c6c AA |
7016 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7017 | data->res.fattr); | |
e59d27e0 TM |
7018 | break; |
7019 | default: | |
7020 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7021 | rpc_restart_call_prepare(task); | |
7022 | return; | |
7023 | } | |
7024 | } | |
863a3c6c AA |
7025 | } |
7026 | ||
7027 | static void nfs4_layoutcommit_release(void *calldata) | |
7028 | { | |
7029 | struct nfs4_layoutcommit_data *data = calldata; | |
7030 | ||
db29c089 | 7031 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
7032 | put_rpccred(data->cred); |
7033 | kfree(data); | |
7034 | } | |
7035 | ||
7036 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7037 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7038 | .rpc_call_done = nfs4_layoutcommit_done, | |
7039 | .rpc_release = nfs4_layoutcommit_release, | |
7040 | }; | |
7041 | ||
7042 | int | |
ef311537 | 7043 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7044 | { |
7045 | struct rpc_message msg = { | |
7046 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7047 | .rpc_argp = &data->args, | |
7048 | .rpc_resp = &data->res, | |
7049 | .rpc_cred = data->cred, | |
7050 | }; | |
7051 | struct rpc_task_setup task_setup_data = { | |
7052 | .task = &data->task, | |
7053 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7054 | .rpc_message = &msg, | |
7055 | .callback_ops = &nfs4_layoutcommit_ops, | |
7056 | .callback_data = data, | |
7057 | .flags = RPC_TASK_ASYNC, | |
7058 | }; | |
7059 | struct rpc_task *task; | |
7060 | int status = 0; | |
7061 | ||
7062 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7063 | "lbw: %llu inode %lu\n", | |
7064 | data->task.tk_pid, sync, | |
7065 | data->args.lastbytewritten, | |
7066 | data->args.inode->i_ino); | |
7067 | ||
9d12b216 | 7068 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7069 | task = rpc_run_task(&task_setup_data); |
7070 | if (IS_ERR(task)) | |
7071 | return PTR_ERR(task); | |
ef311537 | 7072 | if (sync == false) |
863a3c6c AA |
7073 | goto out; |
7074 | status = nfs4_wait_for_completion_rpc_task(task); | |
7075 | if (status != 0) | |
7076 | goto out; | |
7077 | status = task->tk_status; | |
7078 | out: | |
7079 | dprintk("%s: status %d\n", __func__, status); | |
7080 | rpc_put_task(task); | |
7081 | return status; | |
7082 | } | |
fca78d6d BS |
7083 | |
7084 | static int | |
7085 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7086 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7087 | { | |
7088 | struct nfs41_secinfo_no_name_args args = { | |
7089 | .style = SECINFO_STYLE_CURRENT_FH, | |
7090 | }; | |
7091 | struct nfs4_secinfo_res res = { | |
7092 | .flavors = flavors, | |
7093 | }; | |
7094 | struct rpc_message msg = { | |
7095 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7096 | .rpc_argp = &args, | |
7097 | .rpc_resp = &res, | |
7098 | }; | |
7099 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
7100 | } | |
7101 | ||
7102 | static int | |
7103 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7104 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7105 | { | |
7106 | struct nfs4_exception exception = { }; | |
7107 | int err; | |
7108 | do { | |
7109 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7110 | switch (err) { | |
7111 | case 0: | |
7112 | case -NFS4ERR_WRONGSEC: | |
7113 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 7114 | goto out; |
fca78d6d BS |
7115 | default: |
7116 | err = nfs4_handle_exception(server, err, &exception); | |
7117 | } | |
7118 | } while (exception.retry); | |
05e9cfb4 | 7119 | out: |
fca78d6d BS |
7120 | return err; |
7121 | } | |
7122 | ||
7123 | static int | |
7124 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7125 | struct nfs_fsinfo *info) | |
7126 | { | |
7127 | int err; | |
7128 | struct page *page; | |
7129 | rpc_authflavor_t flavor; | |
7130 | struct nfs4_secinfo_flavors *flavors; | |
7131 | ||
7132 | page = alloc_page(GFP_KERNEL); | |
7133 | if (!page) { | |
7134 | err = -ENOMEM; | |
7135 | goto out; | |
7136 | } | |
7137 | ||
7138 | flavors = page_address(page); | |
7139 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7140 | ||
7141 | /* | |
7142 | * Fall back on "guess and check" method if | |
7143 | * the server doesn't support SECINFO_NO_NAME | |
7144 | */ | |
7145 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
7146 | err = nfs4_find_root_sec(server, fhandle, info); | |
7147 | goto out_freepage; | |
7148 | } | |
7149 | if (err) | |
7150 | goto out_freepage; | |
7151 | ||
7152 | flavor = nfs_find_best_sec(flavors); | |
7153 | if (err == 0) | |
7154 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
7155 | ||
7156 | out_freepage: | |
7157 | put_page(page); | |
7158 | if (err == -EACCES) | |
7159 | return -EPERM; | |
7160 | out: | |
7161 | return err; | |
7162 | } | |
1cab0652 | 7163 | |
ab7cb0df TM |
7164 | static int _nfs41_test_stateid(struct nfs_server *server, |
7165 | nfs4_stateid *stateid, | |
7166 | struct rpc_cred *cred) | |
7d974794 BS |
7167 | { |
7168 | int status; | |
7169 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7170 | .stateid = stateid, |
7d974794 BS |
7171 | }; |
7172 | struct nfs41_test_stateid_res res; | |
7173 | struct rpc_message msg = { | |
7174 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7175 | .rpc_argp = &args, | |
7176 | .rpc_resp = &res, | |
ab7cb0df | 7177 | .rpc_cred = cred, |
7d974794 | 7178 | }; |
1cab0652 | 7179 | |
38527b15 | 7180 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 7181 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
7182 | nfs4_set_sequence_privileged(&args.seq_args); |
7183 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
7184 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
7185 | if (status != NFS_OK) { |
7186 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7187 | return status; |
38527b15 CL |
7188 | } |
7189 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7190 | return -res.status; |
7d974794 BS |
7191 | } |
7192 | ||
38527b15 CL |
7193 | /** |
7194 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7195 | * | |
7196 | * @server: server / transport on which to perform the operation | |
7197 | * @stateid: state ID to test | |
ab7cb0df | 7198 | * @cred: credential |
38527b15 CL |
7199 | * |
7200 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7201 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7202 | * failed or the state ID is not currently valid. | |
7203 | */ | |
ab7cb0df TM |
7204 | static int nfs41_test_stateid(struct nfs_server *server, |
7205 | nfs4_stateid *stateid, | |
7206 | struct rpc_cred *cred) | |
7d974794 BS |
7207 | { |
7208 | struct nfs4_exception exception = { }; | |
7209 | int err; | |
7210 | do { | |
ab7cb0df | 7211 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
7212 | if (err != -NFS4ERR_DELAY) |
7213 | break; | |
7214 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7215 | } while (exception.retry); |
7216 | return err; | |
7217 | } | |
9aeda35f | 7218 | |
7c1d5fae TM |
7219 | struct nfs_free_stateid_data { |
7220 | struct nfs_server *server; | |
7221 | struct nfs41_free_stateid_args args; | |
9aeda35f | 7222 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
7223 | }; |
7224 | ||
7225 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
7226 | { | |
7227 | struct nfs_free_stateid_data *data = calldata; | |
7228 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
7229 | &data->args.seq_args, | |
7230 | &data->res.seq_res, | |
7231 | task); | |
7232 | } | |
7233 | ||
7234 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
7235 | { | |
7236 | struct nfs_free_stateid_data *data = calldata; | |
7237 | ||
7238 | nfs41_sequence_done(task, &data->res.seq_res); | |
7239 | ||
7240 | switch (task->tk_status) { | |
7241 | case -NFS4ERR_DELAY: | |
7242 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
7243 | rpc_restart_call_prepare(task); | |
7244 | } | |
7245 | } | |
7246 | ||
7247 | static void nfs41_free_stateid_release(void *calldata) | |
7248 | { | |
7249 | kfree(calldata); | |
7250 | } | |
7251 | ||
7252 | const struct rpc_call_ops nfs41_free_stateid_ops = { | |
7253 | .rpc_call_prepare = nfs41_free_stateid_prepare, | |
7254 | .rpc_call_done = nfs41_free_stateid_done, | |
7255 | .rpc_release = nfs41_free_stateid_release, | |
7256 | }; | |
7257 | ||
7258 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
7259 | nfs4_stateid *stateid, | |
ab7cb0df | 7260 | struct rpc_cred *cred, |
7c1d5fae TM |
7261 | bool privileged) |
7262 | { | |
9aeda35f BS |
7263 | struct rpc_message msg = { |
7264 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 7265 | .rpc_cred = cred, |
9aeda35f | 7266 | }; |
7c1d5fae TM |
7267 | struct rpc_task_setup task_setup = { |
7268 | .rpc_client = server->client, | |
7269 | .rpc_message = &msg, | |
7270 | .callback_ops = &nfs41_free_stateid_ops, | |
7271 | .flags = RPC_TASK_ASYNC, | |
7272 | }; | |
7273 | struct nfs_free_stateid_data *data; | |
9aeda35f | 7274 | |
38527b15 | 7275 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
7276 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7277 | if (!data) | |
7278 | return ERR_PTR(-ENOMEM); | |
7279 | data->server = server; | |
7280 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
7281 | ||
7282 | task_setup.callback_data = data; | |
7283 | ||
7284 | msg.rpc_argp = &data->args; | |
7285 | msg.rpc_resp = &data->res; | |
7286 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
7287 | if (privileged) | |
7288 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
7289 | ||
7290 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
7291 | } |
7292 | ||
38527b15 CL |
7293 | /** |
7294 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7295 | * | |
7296 | * @server: server / transport on which to perform the operation | |
7297 | * @stateid: state ID to release | |
ab7cb0df | 7298 | * @cred: credential |
38527b15 CL |
7299 | * |
7300 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7301 | * negative NFS4ERR value is returned. | |
7302 | */ | |
ab7cb0df TM |
7303 | static int nfs41_free_stateid(struct nfs_server *server, |
7304 | nfs4_stateid *stateid, | |
7305 | struct rpc_cred *cred) | |
9aeda35f | 7306 | { |
7c1d5fae TM |
7307 | struct rpc_task *task; |
7308 | int ret; | |
7309 | ||
ab7cb0df | 7310 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
7311 | if (IS_ERR(task)) |
7312 | return PTR_ERR(task); | |
7313 | ret = rpc_wait_for_completion_task(task); | |
7314 | if (!ret) | |
7315 | ret = task->tk_status; | |
7316 | rpc_put_task(task); | |
7317 | return ret; | |
9aeda35f | 7318 | } |
36281caa | 7319 | |
c8b2d0bf TM |
7320 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
7321 | { | |
7322 | struct rpc_task *task; | |
ab7cb0df | 7323 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 7324 | |
ab7cb0df | 7325 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
7326 | nfs4_free_lock_state(server, lsp); |
7327 | if (IS_ERR(task)) | |
7328 | return PTR_ERR(task); | |
7329 | rpc_put_task(task); | |
7330 | return 0; | |
7331 | } | |
7332 | ||
36281caa TM |
7333 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
7334 | const nfs4_stateid *s2) | |
7335 | { | |
2d2f24ad | 7336 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7337 | return false; |
7338 | ||
2d2f24ad | 7339 | if (s1->seqid == s2->seqid) |
36281caa | 7340 | return true; |
2d2f24ad | 7341 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7342 | return true; |
7343 | ||
7344 | return false; | |
7345 | } | |
7346 | ||
557134a3 AA |
7347 | #endif /* CONFIG_NFS_V4_1 */ |
7348 | ||
36281caa TM |
7349 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7350 | const nfs4_stateid *s2) | |
7351 | { | |
f597c537 | 7352 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7353 | } |
7354 | ||
7355 | ||
17280175 | 7356 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7357 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7358 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7359 | .recover_open = nfs4_open_reclaim, |
7360 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7361 | .establish_clid = nfs4_init_clientid, |
90a16617 | 7362 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 7363 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7364 | }; |
7365 | ||
591d71cb | 7366 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7367 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7368 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7369 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7370 | .recover_open = nfs4_open_reclaim, | |
7371 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7372 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7373 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 7374 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7375 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7376 | }; |
7377 | #endif /* CONFIG_NFS_V4_1 */ | |
7378 | ||
17280175 | 7379 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7380 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7381 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7382 | .recover_open = nfs4_open_expired, | |
7383 | .recover_lock = nfs4_lock_expired, | |
7384 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 7385 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
7386 | }; |
7387 | ||
7388 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7389 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7390 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7391 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7392 | .recover_open = nfs41_open_expired, |
7393 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7394 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7395 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 7396 | }; |
591d71cb | 7397 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7398 | |
17280175 | 7399 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7400 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7401 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7402 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7403 | }; |
7404 | ||
7405 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7406 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7407 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7408 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7409 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7410 | }; |
7411 | #endif | |
7412 | ||
97dc1359 TM |
7413 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7414 | .minor_version = 0, | |
39c6daae TM |
7415 | .init_caps = NFS_CAP_READDIRPLUS |
7416 | | NFS_CAP_ATOMIC_OPEN | |
7417 | | NFS_CAP_CHANGE_ATTR | |
7418 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 7419 | .call_sync = _nfs4_call_sync, |
36281caa | 7420 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7421 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7422 | .free_lock_state = nfs4_release_lockowner, |
c48f4f35 TM |
7423 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7424 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7425 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7426 | }; |
7427 | ||
7428 | #if defined(CONFIG_NFS_V4_1) | |
7429 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7430 | .minor_version = 1, | |
39c6daae TM |
7431 | .init_caps = NFS_CAP_READDIRPLUS |
7432 | | NFS_CAP_ATOMIC_OPEN | |
7433 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7434 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7435 | | NFS_CAP_STATEID_NFSV41 |
7436 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 7437 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 7438 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7439 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7440 | .free_lock_state = nfs41_free_lock_state, |
c48f4f35 TM |
7441 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7442 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7443 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7444 | }; |
7445 | #endif | |
7446 | ||
42c2c424 SD |
7447 | #if defined(CONFIG_NFS_V4_2) |
7448 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7449 | .minor_version = 2, | |
7017310a BS |
7450 | .init_caps = NFS_CAP_READDIRPLUS |
7451 | | NFS_CAP_ATOMIC_OPEN | |
7452 | | NFS_CAP_CHANGE_ATTR | |
7453 | | NFS_CAP_POSIX_LOCK | |
7454 | | NFS_CAP_STATEID_NFSV41 | |
7455 | | NFS_CAP_ATOMIC_OPEN_V1, | |
42c2c424 SD |
7456 | .call_sync = nfs4_call_sync_sequence, |
7457 | .match_stateid = nfs41_match_stateid, | |
7458 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 7459 | .free_lock_state = nfs41_free_lock_state, |
42c2c424 SD |
7460 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7461 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7462 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7463 | }; | |
7464 | #endif | |
7465 | ||
97dc1359 TM |
7466 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7467 | [0] = &nfs_v4_0_minor_ops, | |
7468 | #if defined(CONFIG_NFS_V4_1) | |
7469 | [1] = &nfs_v4_1_minor_ops, | |
7470 | #endif | |
42c2c424 SD |
7471 | #if defined(CONFIG_NFS_V4_2) |
7472 | [2] = &nfs_v4_2_minor_ops, | |
7473 | #endif | |
97dc1359 TM |
7474 | }; |
7475 | ||
73a79706 BS |
7476 | const struct inode_operations nfs4_dir_inode_operations = { |
7477 | .create = nfs_create, | |
7478 | .lookup = nfs_lookup, | |
7479 | .atomic_open = nfs_atomic_open, | |
7480 | .link = nfs_link, | |
7481 | .unlink = nfs_unlink, | |
7482 | .symlink = nfs_symlink, | |
7483 | .mkdir = nfs_mkdir, | |
7484 | .rmdir = nfs_rmdir, | |
7485 | .mknod = nfs_mknod, | |
7486 | .rename = nfs_rename, | |
7487 | .permission = nfs_permission, | |
7488 | .getattr = nfs_getattr, | |
7489 | .setattr = nfs_setattr, | |
7490 | .getxattr = generic_getxattr, | |
7491 | .setxattr = generic_setxattr, | |
7492 | .listxattr = generic_listxattr, | |
7493 | .removexattr = generic_removexattr, | |
7494 | }; | |
7495 | ||
92e1d5be | 7496 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7497 | .permission = nfs_permission, |
7498 | .getattr = nfs_getattr, | |
7499 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7500 | .getxattr = generic_getxattr, |
7501 | .setxattr = generic_setxattr, | |
7502 | .listxattr = generic_listxattr, | |
7503 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7504 | }; |
7505 | ||
509de811 | 7506 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7507 | .version = 4, /* protocol version */ |
7508 | .dentry_ops = &nfs4_dentry_operations, | |
7509 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7510 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7511 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7512 | .getroot = nfs4_proc_get_root, |
281cad46 | 7513 | .submount = nfs4_submount, |
ff9099f2 | 7514 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7515 | .getattr = nfs4_proc_getattr, |
7516 | .setattr = nfs4_proc_setattr, | |
7517 | .lookup = nfs4_proc_lookup, | |
7518 | .access = nfs4_proc_access, | |
7519 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7520 | .create = nfs4_proc_create, |
7521 | .remove = nfs4_proc_remove, | |
7522 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7523 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7524 | .unlink_done = nfs4_proc_unlink_done, |
7525 | .rename = nfs4_proc_rename, | |
d3d4152a | 7526 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7527 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7528 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7529 | .link = nfs4_proc_link, |
7530 | .symlink = nfs4_proc_symlink, | |
7531 | .mkdir = nfs4_proc_mkdir, | |
7532 | .rmdir = nfs4_proc_remove, | |
7533 | .readdir = nfs4_proc_readdir, | |
7534 | .mknod = nfs4_proc_mknod, | |
7535 | .statfs = nfs4_proc_statfs, | |
7536 | .fsinfo = nfs4_proc_fsinfo, | |
7537 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7538 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7539 | .decode_dirent = nfs4_decode_dirent, |
7540 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7541 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7542 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7543 | .read_done = nfs4_read_done, |
1da177e4 | 7544 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7545 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7546 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7547 | .write_done = nfs4_write_done, |
1da177e4 | 7548 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7549 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7550 | .commit_done = nfs4_commit_done, |
1da177e4 | 7551 | .lock = nfs4_proc_lock, |
e50a1c2e | 7552 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7553 | .close_context = nfs4_close_context, |
2b484297 | 7554 | .open_context = nfs4_atomic_open, |
011e2a7f | 7555 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7556 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7557 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7558 | .init_client = nfs4_init_client, |
cdb7eced | 7559 | .free_client = nfs4_free_client, |
1179acc6 BS |
7560 | .create_server = nfs4_create_server, |
7561 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7562 | }; |
7563 | ||
64c2ce8b AK |
7564 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7565 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7566 | .list = nfs4_xattr_list_nfs4_acl, | |
7567 | .get = nfs4_xattr_get_nfs4_acl, | |
7568 | .set = nfs4_xattr_set_nfs4_acl, | |
7569 | }; | |
7570 | ||
7571 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7572 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
7573 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
7574 | &nfs4_xattr_nfs4_label_handler, | |
7575 | #endif | |
64c2ce8b AK |
7576 | NULL |
7577 | }; | |
7578 | ||
1da177e4 LT |
7579 | /* |
7580 | * Local variables: | |
7581 | * c-basic-offset: 8 | |
7582 | * End: | |
7583 | */ |