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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 | 68 | |
c6d01c6f TM |
69 | #include "nfs4trace.h" |
70 | ||
1da177e4 LT |
71 | #define NFSDBG_FACILITY NFSDBG_PROC |
72 | ||
2066fe89 | 73 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
74 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
75 | ||
cdd4e68b | 76 | struct nfs4_opendata; |
864472e9 | 77 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 78 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 79 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 80 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 81 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
82 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
86 | struct nfs4_state *state, struct nfs4_label *ilabel, |
87 | struct nfs4_label *olabel); | |
f062eb6c | 88 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
89 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
90 | struct rpc_cred *); | |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
92 | struct rpc_cred *); | |
f062eb6c | 93 | #endif |
aa9c2669 DQ |
94 | |
95 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
96 | static inline struct nfs4_label * | |
97 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
98 | struct iattr *sattr, struct nfs4_label *label) | |
99 | { | |
100 | int err; | |
101 | ||
102 | if (label == NULL) | |
103 | return NULL; | |
104 | ||
105 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
106 | return NULL; | |
107 | ||
108 | if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2) | |
109 | return NULL; | |
110 | ||
111 | err = security_dentry_init_security(dentry, sattr->ia_mode, | |
112 | &dentry->d_name, (void **)&label->label, &label->len); | |
113 | if (err == 0) | |
114 | return label; | |
115 | ||
116 | return NULL; | |
117 | } | |
118 | static inline void | |
119 | nfs4_label_release_security(struct nfs4_label *label) | |
120 | { | |
121 | if (label) | |
122 | security_release_secctx(label->label, label->len); | |
123 | } | |
124 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
125 | { | |
126 | if (label) | |
127 | return server->attr_bitmask; | |
128 | ||
129 | return server->attr_bitmask_nl; | |
130 | } | |
131 | #else | |
132 | static inline struct nfs4_label * | |
133 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
134 | struct iattr *sattr, struct nfs4_label *l) | |
135 | { return NULL; } | |
136 | static inline void | |
137 | nfs4_label_release_security(struct nfs4_label *label) | |
138 | { return; } | |
139 | static inline u32 * | |
140 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
141 | { return server->attr_bitmask; } | |
142 | #endif | |
143 | ||
1da177e4 | 144 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 145 | static int nfs4_map_errors(int err) |
1da177e4 | 146 | { |
52567b03 TM |
147 | if (err >= -1000) |
148 | return err; | |
149 | switch (err) { | |
150 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
151 | case -NFS4ERR_LAYOUTTRYLATER: |
152 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 153 | return -EREMOTEIO; |
7ebb9315 | 154 | case -NFS4ERR_WRONGSEC: |
8897538e | 155 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 156 | return -EPERM; |
3ddeb7c5 TM |
157 | case -NFS4ERR_BADOWNER: |
158 | case -NFS4ERR_BADNAME: | |
159 | return -EINVAL; | |
fb13bfa7 TM |
160 | case -NFS4ERR_SHARE_DENIED: |
161 | return -EACCES; | |
f25efd85 SD |
162 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
163 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
164 | case -NFS4ERR_ACCESS: |
165 | return -EACCES; | |
6e3cf241 TM |
166 | case -NFS4ERR_FILE_OPEN: |
167 | return -EBUSY; | |
52567b03 | 168 | default: |
1da177e4 | 169 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 170 | __func__, -err); |
52567b03 | 171 | break; |
1da177e4 | 172 | } |
52567b03 | 173 | return -EIO; |
1da177e4 LT |
174 | } |
175 | ||
176 | /* | |
177 | * This is our standard bitmap for GETATTR requests. | |
178 | */ | |
1549210f | 179 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
180 | FATTR4_WORD0_TYPE |
181 | | FATTR4_WORD0_CHANGE | |
182 | | FATTR4_WORD0_SIZE | |
183 | | FATTR4_WORD0_FSID | |
184 | | FATTR4_WORD0_FILEID, | |
185 | FATTR4_WORD1_MODE | |
186 | | FATTR4_WORD1_NUMLINKS | |
187 | | FATTR4_WORD1_OWNER | |
188 | | FATTR4_WORD1_OWNER_GROUP | |
189 | | FATTR4_WORD1_RAWDEV | |
190 | | FATTR4_WORD1_SPACE_USED | |
191 | | FATTR4_WORD1_TIME_ACCESS | |
192 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
193 | | FATTR4_WORD1_TIME_MODIFY, |
194 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
195 | FATTR4_WORD2_SECURITY_LABEL | |
196 | #endif | |
1da177e4 LT |
197 | }; |
198 | ||
1549210f TM |
199 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
200 | FATTR4_WORD0_TYPE | |
201 | | FATTR4_WORD0_CHANGE | |
202 | | FATTR4_WORD0_SIZE | |
203 | | FATTR4_WORD0_FSID | |
204 | | FATTR4_WORD0_FILEID, | |
205 | FATTR4_WORD1_MODE | |
206 | | FATTR4_WORD1_NUMLINKS | |
207 | | FATTR4_WORD1_OWNER | |
208 | | FATTR4_WORD1_OWNER_GROUP | |
209 | | FATTR4_WORD1_RAWDEV | |
210 | | FATTR4_WORD1_SPACE_USED | |
211 | | FATTR4_WORD1_TIME_ACCESS | |
212 | | FATTR4_WORD1_TIME_METADATA | |
213 | | FATTR4_WORD1_TIME_MODIFY, | |
214 | FATTR4_WORD2_MDSTHRESHOLD | |
215 | }; | |
216 | ||
e23008ec AA |
217 | static const u32 nfs4_open_noattr_bitmap[3] = { |
218 | FATTR4_WORD0_TYPE | |
219 | | FATTR4_WORD0_CHANGE | |
220 | | FATTR4_WORD0_FILEID, | |
221 | }; | |
222 | ||
a09df2ca | 223 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
224 | FATTR4_WORD0_FILES_AVAIL |
225 | | FATTR4_WORD0_FILES_FREE | |
226 | | FATTR4_WORD0_FILES_TOTAL, | |
227 | FATTR4_WORD1_SPACE_AVAIL | |
228 | | FATTR4_WORD1_SPACE_FREE | |
229 | | FATTR4_WORD1_SPACE_TOTAL | |
230 | }; | |
231 | ||
a09df2ca | 232 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
233 | FATTR4_WORD0_MAXLINK |
234 | | FATTR4_WORD0_MAXNAME, | |
235 | 0 | |
236 | }; | |
237 | ||
dae100c2 | 238 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
239 | | FATTR4_WORD0_MAXREAD |
240 | | FATTR4_WORD0_MAXWRITE | |
241 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 242 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
243 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
244 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
245 | }; |
246 | ||
a09df2ca | 247 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
248 | FATTR4_WORD0_TYPE |
249 | | FATTR4_WORD0_CHANGE | |
250 | | FATTR4_WORD0_SIZE | |
251 | | FATTR4_WORD0_FSID | |
252 | | FATTR4_WORD0_FILEID | |
253 | | FATTR4_WORD0_FS_LOCATIONS, | |
254 | FATTR4_WORD1_MODE | |
255 | | FATTR4_WORD1_NUMLINKS | |
256 | | FATTR4_WORD1_OWNER | |
257 | | FATTR4_WORD1_OWNER_GROUP | |
258 | | FATTR4_WORD1_RAWDEV | |
259 | | FATTR4_WORD1_SPACE_USED | |
260 | | FATTR4_WORD1_TIME_ACCESS | |
261 | | FATTR4_WORD1_TIME_METADATA | |
262 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 263 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
264 | }; |
265 | ||
bc4785cd | 266 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
267 | struct nfs4_readdir_arg *readdir) |
268 | { | |
0dbb4c67 | 269 | __be32 *start, *p; |
1da177e4 | 270 | |
1da177e4 | 271 | if (cookie > 2) { |
b7ef1956 | 272 | readdir->cookie = cookie; |
1da177e4 LT |
273 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
274 | return; | |
275 | } | |
276 | ||
277 | readdir->cookie = 0; | |
278 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
279 | if (cookie == 2) | |
280 | return; | |
281 | ||
282 | /* | |
283 | * NFSv4 servers do not return entries for '.' and '..' | |
284 | * Therefore, we fake these entries here. We let '.' | |
285 | * have cookie 0 and '..' have cookie 1. Note that | |
286 | * when talking to the server, we always send cookie 0 | |
287 | * instead of 1 or 2. | |
288 | */ | |
2b86ce2d | 289 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
290 | |
291 | if (cookie == 0) { | |
292 | *p++ = xdr_one; /* next */ | |
293 | *p++ = xdr_zero; /* cookie, first word */ | |
294 | *p++ = xdr_one; /* cookie, second word */ | |
295 | *p++ = xdr_one; /* entry len */ | |
296 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
297 | p++; | |
298 | *p++ = xdr_one; /* bitmap length */ | |
299 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
300 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 301 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
302 | } |
303 | ||
304 | *p++ = xdr_one; /* next */ | |
305 | *p++ = xdr_zero; /* cookie, first word */ | |
306 | *p++ = xdr_two; /* cookie, second word */ | |
307 | *p++ = xdr_two; /* entry len */ | |
308 | memcpy(p, "..\0\0", 4); /* entry */ | |
309 | p++; | |
310 | *p++ = xdr_one; /* bitmap length */ | |
311 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
312 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 313 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
314 | |
315 | readdir->pgbase = (char *)p - (char *)start; | |
316 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 317 | kunmap_atomic(start); |
1da177e4 LT |
318 | } |
319 | ||
65de872e TM |
320 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
321 | { | |
322 | int res = 0; | |
323 | ||
324 | might_sleep(); | |
325 | ||
326 | if (*timeout <= 0) | |
327 | *timeout = NFS4_POLL_RETRY_MIN; | |
328 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
329 | *timeout = NFS4_POLL_RETRY_MAX; | |
416ad3c9 | 330 | freezable_schedule_timeout_killable_unsafe(*timeout); |
65de872e TM |
331 | if (fatal_signal_pending(current)) |
332 | res = -ERESTARTSYS; | |
333 | *timeout <<= 1; | |
334 | return res; | |
335 | } | |
336 | ||
337 | /* This is the error handling routine for processes that are allowed | |
338 | * to sleep. | |
339 | */ | |
b064eca2 | 340 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
341 | { |
342 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 343 | struct nfs4_state *state = exception->state; |
3114ea7a | 344 | struct inode *inode = exception->inode; |
65de872e TM |
345 | int ret = errorcode; |
346 | ||
347 | exception->retry = 0; | |
348 | switch(errorcode) { | |
349 | case 0: | |
350 | return 0; | |
3114ea7a | 351 | case -NFS4ERR_OPENMODE: |
011e2a7f | 352 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 353 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
354 | exception->retry = 1; |
355 | return 0; | |
356 | } | |
357 | if (state == NULL) | |
358 | break; | |
5d422301 TM |
359 | ret = nfs4_schedule_stateid_recovery(server, state); |
360 | if (ret < 0) | |
361 | break; | |
3114ea7a | 362 | goto wait_on_recovery; |
a1d0b5ee | 363 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
364 | case -NFS4ERR_ADMIN_REVOKED: |
365 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
366 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
367 | nfs_remove_bad_delegation(inode); | |
368 | exception->retry = 1; | |
369 | break; | |
370 | } | |
9e33bed5 TM |
371 | if (state == NULL) |
372 | break; | |
5d422301 TM |
373 | ret = nfs4_schedule_stateid_recovery(server, state); |
374 | if (ret < 0) | |
375 | break; | |
0400a6b0 | 376 | goto wait_on_recovery; |
0ced63d1 | 377 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
378 | if (state != NULL) { |
379 | ret = nfs4_schedule_stateid_recovery(server, state); | |
380 | if (ret < 0) | |
381 | break; | |
382 | } | |
65de872e | 383 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 384 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
385 | nfs4_schedule_lease_recovery(clp); |
386 | goto wait_on_recovery; | |
03391693 | 387 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
388 | case -NFS4ERR_BADSESSION: |
389 | case -NFS4ERR_BADSLOT: | |
390 | case -NFS4ERR_BAD_HIGH_SLOT: | |
391 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
392 | case -NFS4ERR_DEADSESSION: | |
393 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
394 | case -NFS4ERR_SEQ_MISORDERED: | |
395 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
396 | errorcode); | |
9f594791 | 397 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 398 | goto wait_on_recovery; |
03391693 | 399 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 400 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
401 | if (exception->timeout > HZ) { |
402 | /* We have retried a decent amount, time to | |
403 | * fail | |
404 | */ | |
405 | ret = -EBUSY; | |
406 | break; | |
407 | } | |
65de872e TM |
408 | case -NFS4ERR_GRACE: |
409 | case -NFS4ERR_DELAY: | |
410 | ret = nfs4_delay(server->client, &exception->timeout); | |
411 | if (ret != 0) | |
412 | break; | |
a8a4ae3a | 413 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
414 | case -NFS4ERR_OLD_STATEID: |
415 | exception->retry = 1; | |
b064eca2 TM |
416 | break; |
417 | case -NFS4ERR_BADOWNER: | |
418 | /* The following works around a Linux server bug! */ | |
419 | case -NFS4ERR_BADNAME: | |
420 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
421 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
422 | exception->retry = 1; | |
423 | printk(KERN_WARNING "NFS: v4 server %s " | |
424 | "does not accept raw " | |
425 | "uid/gids. " | |
426 | "Reenabling the idmapper.\n", | |
427 | server->nfs_client->cl_hostname); | |
428 | } | |
65de872e TM |
429 | } |
430 | /* We failed to handle the error */ | |
431 | return nfs4_map_errors(ret); | |
0400a6b0 | 432 | wait_on_recovery: |
a2c0b9e2 TM |
433 | ret = nfs4_wait_clnt_recover(clp); |
434 | if (ret == 0) | |
435 | exception->retry = 1; | |
436 | return ret; | |
65de872e TM |
437 | } |
438 | ||
a5250def WAA |
439 | /* |
440 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
441 | * or 'false' otherwise. | |
442 | */ | |
443 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
444 | { | |
445 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
446 | ||
447 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
448 | flavor == RPC_AUTH_GSS_KRB5P) | |
449 | return true; | |
450 | ||
451 | return false; | |
452 | } | |
65de872e | 453 | |
452e9352 | 454 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 455 | { |
1da177e4 LT |
456 | spin_lock(&clp->cl_lock); |
457 | if (time_before(clp->cl_last_renewal,timestamp)) | |
458 | clp->cl_last_renewal = timestamp; | |
459 | spin_unlock(&clp->cl_lock); | |
460 | } | |
461 | ||
452e9352 TM |
462 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
463 | { | |
464 | do_renew_lease(server->nfs_client, timestamp); | |
465 | } | |
466 | ||
2a3eb2b9 CL |
467 | struct nfs4_call_sync_data { |
468 | const struct nfs_server *seq_server; | |
469 | struct nfs4_sequence_args *seq_args; | |
470 | struct nfs4_sequence_res *seq_res; | |
471 | }; | |
472 | ||
a9c92d6b CL |
473 | static void nfs4_init_sequence(struct nfs4_sequence_args *args, |
474 | struct nfs4_sequence_res *res, int cache_reply) | |
475 | { | |
476 | args->sa_slot = NULL; | |
477 | args->sa_cache_this = cache_reply; | |
478 | args->sa_privileged = 0; | |
479 | ||
480 | res->sr_slot = NULL; | |
481 | } | |
482 | ||
483 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
484 | { | |
485 | args->sa_privileged = 1; | |
486 | } | |
487 | ||
3bd2384a CL |
488 | static int nfs40_setup_sequence(const struct nfs_server *server, |
489 | struct nfs4_sequence_args *args, | |
490 | struct nfs4_sequence_res *res, | |
491 | struct rpc_task *task) | |
492 | { | |
493 | struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl; | |
494 | struct nfs4_slot *slot; | |
495 | ||
496 | /* slot already allocated? */ | |
497 | if (res->sr_slot != NULL) | |
498 | goto out_start; | |
499 | ||
500 | spin_lock(&tbl->slot_tbl_lock); | |
501 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
502 | goto out_sleep; | |
503 | ||
504 | slot = nfs4_alloc_slot(tbl); | |
505 | if (IS_ERR(slot)) { | |
506 | if (slot == ERR_PTR(-ENOMEM)) | |
507 | task->tk_timeout = HZ >> 2; | |
508 | goto out_sleep; | |
509 | } | |
510 | spin_unlock(&tbl->slot_tbl_lock); | |
511 | ||
512 | args->sa_slot = slot; | |
513 | res->sr_slot = slot; | |
514 | ||
515 | out_start: | |
516 | rpc_call_start(task); | |
517 | return 0; | |
518 | ||
519 | out_sleep: | |
520 | if (args->sa_privileged) | |
521 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
522 | NULL, RPC_PRIORITY_PRIVILEGED); | |
523 | else | |
524 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
525 | spin_unlock(&tbl->slot_tbl_lock); | |
526 | return -EAGAIN; | |
527 | } | |
528 | ||
529 | static int nfs40_sequence_done(struct rpc_task *task, | |
530 | struct nfs4_sequence_res *res) | |
531 | { | |
532 | struct nfs4_slot *slot = res->sr_slot; | |
533 | struct nfs4_slot_table *tbl; | |
534 | ||
535 | if (!RPC_WAS_SENT(task)) | |
536 | goto out; | |
537 | ||
538 | tbl = slot->table; | |
539 | spin_lock(&tbl->slot_tbl_lock); | |
540 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
541 | nfs4_free_slot(tbl, slot); | |
542 | spin_unlock(&tbl->slot_tbl_lock); | |
543 | ||
544 | res->sr_slot = NULL; | |
545 | out: | |
546 | return 1; | |
547 | } | |
548 | ||
cccef3b9 AA |
549 | #if defined(CONFIG_NFS_V4_1) |
550 | ||
d185a334 | 551 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 552 | { |
e3725ec0 | 553 | struct nfs4_session *session; |
13615871 | 554 | struct nfs4_slot_table *tbl; |
c10e4498 | 555 | bool send_new_highest_used_slotid = false; |
13615871 | 556 | |
dfb4f309 | 557 | if (!res->sr_slot) { |
13615871 AA |
558 | /* just wake up the next guy waiting since |
559 | * we may have not consumed a slot after all */ | |
691daf3b | 560 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 561 | return; |
13615871 | 562 | } |
e3725ec0 TM |
563 | tbl = res->sr_slot->table; |
564 | session = tbl->session; | |
ea028ac9 | 565 | |
35dc1d74 | 566 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
567 | /* Be nice to the server: try to ensure that the last transmitted |
568 | * value for highest_user_slotid <= target_highest_slotid | |
569 | */ | |
570 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
571 | send_new_highest_used_slotid = true; | |
572 | ||
b75ad4cd TM |
573 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
574 | send_new_highest_used_slotid = false; | |
575 | goto out_unlock; | |
576 | } | |
f4af6e2a | 577 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
578 | |
579 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
580 | send_new_highest_used_slotid = false; | |
b75ad4cd | 581 | out_unlock: |
35dc1d74 | 582 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 583 | res->sr_slot = NULL; |
c10e4498 TM |
584 | if (send_new_highest_used_slotid) |
585 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
586 | } |
587 | ||
14516c3a | 588 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 589 | { |
e3725ec0 | 590 | struct nfs4_session *session; |
933602e3 | 591 | struct nfs4_slot *slot; |
14516c3a | 592 | struct nfs_client *clp; |
ac20d163 | 593 | bool interrupted = false; |
85563073 | 594 | int ret = 1; |
b0df806c | 595 | |
468f8613 BS |
596 | /* don't increment the sequence number if the task wasn't sent */ |
597 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
598 | goto out; |
599 | ||
933602e3 | 600 | slot = res->sr_slot; |
e3725ec0 | 601 | session = slot->table->session; |
933602e3 | 602 | |
ac20d163 TM |
603 | if (slot->interrupted) { |
604 | slot->interrupted = 0; | |
605 | interrupted = true; | |
606 | } | |
607 | ||
2f92ae34 | 608 | trace_nfs4_sequence_done(session, res); |
691daf3b | 609 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
610 | switch (res->sr_status) { |
611 | case 0: | |
b0df806c | 612 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 613 | ++slot->seq_nr; |
e3725ec0 | 614 | clp = session->clp; |
8e63b6a8 | 615 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 616 | /* Check sequence flags */ |
b4410c2f TM |
617 | if (res->sr_status_flags != 0) |
618 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 619 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 620 | break; |
ac20d163 TM |
621 | case 1: |
622 | /* | |
623 | * sr_status remains 1 if an RPC level error occurred. | |
624 | * The server may or may not have processed the sequence | |
625 | * operation.. | |
626 | * Mark the slot as having hosted an interrupted RPC call. | |
627 | */ | |
628 | slot->interrupted = 1; | |
629 | goto out; | |
14516c3a TM |
630 | case -NFS4ERR_DELAY: |
631 | /* The server detected a resend of the RPC call and | |
632 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
633 | * of RFC5661. | |
634 | */ | |
df2fabff | 635 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 636 | __func__, |
df2fabff | 637 | slot->slot_nr, |
933602e3 | 638 | slot->seq_nr); |
14516c3a | 639 | goto out_retry; |
85563073 TM |
640 | case -NFS4ERR_BADSLOT: |
641 | /* | |
642 | * The slot id we used was probably retired. Try again | |
643 | * using a different slot id. | |
644 | */ | |
e8794440 TM |
645 | goto retry_nowait; |
646 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
647 | /* |
648 | * Was the last operation on this sequence interrupted? | |
649 | * If so, retry after bumping the sequence number. | |
650 | */ | |
651 | if (interrupted) { | |
652 | ++slot->seq_nr; | |
653 | goto retry_nowait; | |
654 | } | |
e8794440 TM |
655 | /* |
656 | * Could this slot have been previously retired? | |
657 | * If so, then the server may be expecting seq_nr = 1! | |
658 | */ | |
8e63b6a8 TM |
659 | if (slot->seq_nr != 1) { |
660 | slot->seq_nr = 1; | |
661 | goto retry_nowait; | |
662 | } | |
663 | break; | |
e8794440 TM |
664 | case -NFS4ERR_SEQ_FALSE_RETRY: |
665 | ++slot->seq_nr; | |
666 | goto retry_nowait; | |
14516c3a TM |
667 | default: |
668 | /* Just update the slot sequence no. */ | |
933602e3 | 669 | ++slot->seq_nr; |
b0df806c AA |
670 | } |
671 | out: | |
672 | /* The session may be reset by one of the error handlers. */ | |
673 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 674 | nfs41_sequence_free_slot(res); |
85563073 | 675 | return ret; |
e8794440 TM |
676 | retry_nowait: |
677 | if (rpc_restart_call_prepare(task)) { | |
678 | task->tk_status = 0; | |
679 | ret = 0; | |
680 | } | |
681 | goto out; | |
14516c3a | 682 | out_retry: |
d05dd4e9 | 683 | if (!rpc_restart_call(task)) |
14516c3a TM |
684 | goto out; |
685 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
686 | return 0; | |
b0df806c AA |
687 | } |
688 | ||
14516c3a TM |
689 | static int nfs4_sequence_done(struct rpc_task *task, |
690 | struct nfs4_sequence_res *res) | |
df896455 | 691 | { |
e3725ec0 | 692 | if (res->sr_slot == NULL) |
14516c3a | 693 | return 1; |
3bd2384a CL |
694 | if (!res->sr_slot->table->session) |
695 | return nfs40_sequence_done(task, res); | |
14516c3a | 696 | return nfs41_sequence_done(task, res); |
df896455 TM |
697 | } |
698 | ||
dc70d7b3 | 699 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
700 | struct nfs4_sequence_args *args, |
701 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
702 | struct rpc_task *task) |
703 | { | |
fbcd4abc AA |
704 | struct nfs4_slot *slot; |
705 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
706 | |
707 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 708 | /* slot already allocated? */ |
dfb4f309 | 709 | if (res->sr_slot != NULL) |
d9afbd1b | 710 | goto out_success; |
ce5039c1 | 711 | |
fbcd4abc AA |
712 | tbl = &session->fc_slot_table; |
713 | ||
69d206b5 TM |
714 | task->tk_timeout = 0; |
715 | ||
fbcd4abc | 716 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 717 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 718 | !args->sa_privileged) { |
0b1c8fc4 | 719 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 720 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 721 | goto out_sleep; |
689cf5c1 AB |
722 | } |
723 | ||
2dc03b7f | 724 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
725 | if (IS_ERR(slot)) { |
726 | /* If out of memory, try again in 1/4 second */ | |
727 | if (slot == ERR_PTR(-ENOMEM)) | |
728 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 729 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 730 | goto out_sleep; |
fbcd4abc AA |
731 | } |
732 | spin_unlock(&tbl->slot_tbl_lock); | |
733 | ||
2b2fa717 | 734 | args->sa_slot = slot; |
fbcd4abc | 735 | |
e8d92382 | 736 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 737 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 738 | |
dfb4f309 | 739 | res->sr_slot = slot; |
8e63b6a8 | 740 | res->sr_timestamp = jiffies; |
2a6e26cd | 741 | res->sr_status_flags = 0; |
fbcd4abc AA |
742 | /* |
743 | * sr_status is only set in decode_sequence, and so will remain | |
744 | * set to 1 if an rpc level failure occurs. | |
745 | */ | |
746 | res->sr_status = 1; | |
2f92ae34 | 747 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
748 | out_success: |
749 | rpc_call_start(task); | |
ce5039c1 | 750 | return 0; |
7b939a3f | 751 | out_sleep: |
8fe72bac TM |
752 | /* Privileged tasks are queued with top priority */ |
753 | if (args->sa_privileged) | |
1e1093c7 TM |
754 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
755 | NULL, RPC_PRIORITY_PRIVILEGED); | |
756 | else | |
757 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
758 | spin_unlock(&tbl->slot_tbl_lock); |
759 | return -EAGAIN; | |
ce5039c1 | 760 | } |
dc70d7b3 | 761 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 762 | |
5a580e0a CL |
763 | static int nfs4_setup_sequence(const struct nfs_server *server, |
764 | struct nfs4_sequence_args *args, | |
765 | struct nfs4_sequence_res *res, | |
766 | struct rpc_task *task) | |
ce5039c1 | 767 | { |
035168ab | 768 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
769 | int ret = 0; |
770 | ||
3bd2384a CL |
771 | if (!session) |
772 | return nfs40_setup_sequence(server, args, res, task); | |
035168ab | 773 | |
e8d92382 | 774 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 775 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 776 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 777 | |
9d12b216 | 778 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 779 | |
ce5039c1 AA |
780 | dprintk("<-- %s status=%d\n", __func__, ret); |
781 | return ret; | |
782 | } | |
783 | ||
ce5039c1 AA |
784 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
785 | { | |
2a3eb2b9 | 786 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 787 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 788 | |
035168ab TM |
789 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
790 | ||
d9afbd1b | 791 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
792 | } |
793 | ||
69ab40c4 AA |
794 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
795 | { | |
2a3eb2b9 | 796 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 797 | |
14516c3a | 798 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
799 | } |
800 | ||
17280175 | 801 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 802 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 803 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
804 | }; |
805 | ||
3bd2384a CL |
806 | #else /* !CONFIG_NFS_V4_1 */ |
807 | ||
9915ea7e CL |
808 | static int nfs4_setup_sequence(const struct nfs_server *server, |
809 | struct nfs4_sequence_args *args, | |
810 | struct nfs4_sequence_res *res, | |
811 | struct rpc_task *task) | |
812 | { | |
3bd2384a | 813 | return nfs40_setup_sequence(server, args, res, task); |
9915ea7e CL |
814 | } |
815 | ||
816 | static int nfs4_sequence_done(struct rpc_task *task, | |
817 | struct nfs4_sequence_res *res) | |
818 | { | |
3bd2384a | 819 | return nfs40_sequence_done(task, res); |
9915ea7e | 820 | } |
3bd2384a CL |
821 | |
822 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
823 | |
824 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
825 | { | |
826 | struct nfs4_call_sync_data *data = calldata; | |
827 | nfs4_setup_sequence(data->seq_server, | |
828 | data->seq_args, data->seq_res, task); | |
829 | } | |
830 | ||
831 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
832 | { | |
833 | struct nfs4_call_sync_data *data = calldata; | |
834 | nfs4_sequence_done(task, data->seq_res); | |
835 | } | |
836 | ||
837 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
838 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
839 | .rpc_call_done = nfs40_call_sync_done, | |
840 | }; | |
841 | ||
7c513058 BS |
842 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
843 | struct nfs_server *server, | |
ce5039c1 AA |
844 | struct rpc_message *msg, |
845 | struct nfs4_sequence_args *args, | |
8fe72bac | 846 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
847 | { |
848 | int ret; | |
849 | struct rpc_task *task; | |
9915ea7e | 850 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 851 | struct nfs4_call_sync_data data = { |
035168ab | 852 | .seq_server = server, |
ce5039c1 AA |
853 | .seq_args = args, |
854 | .seq_res = res, | |
ce5039c1 AA |
855 | }; |
856 | struct rpc_task_setup task_setup = { | |
7c513058 | 857 | .rpc_client = clnt, |
ce5039c1 | 858 | .rpc_message = msg, |
9915ea7e | 859 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
860 | .callback_data = &data |
861 | }; | |
862 | ||
ce5039c1 AA |
863 | task = rpc_run_task(&task_setup); |
864 | if (IS_ERR(task)) | |
865 | ret = PTR_ERR(task); | |
866 | else { | |
867 | ret = task->tk_status; | |
868 | rpc_put_task(task); | |
869 | } | |
870 | return ret; | |
871 | } | |
872 | ||
fd0c0953 | 873 | static |
7c513058 BS |
874 | int nfs4_call_sync(struct rpc_clnt *clnt, |
875 | struct nfs_server *server, | |
e73b83f2 BS |
876 | struct rpc_message *msg, |
877 | struct nfs4_sequence_args *args, | |
878 | struct nfs4_sequence_res *res, | |
879 | int cache_reply) | |
880 | { | |
a9c92d6b | 881 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 882 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 883 | } |
cccef3b9 | 884 | |
38478b24 | 885 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 886 | { |
38478b24 | 887 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 888 | |
38478b24 | 889 | spin_lock(&dir->i_lock); |
359d7d1c | 890 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 891 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 892 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 893 | dir->i_version = cinfo->after; |
de242c0b | 894 | nfs_fscache_invalidate(dir); |
38478b24 | 895 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
896 | } |
897 | ||
e56e0b78 | 898 | struct nfs4_opendata { |
c6d00e63 | 899 | struct kref kref; |
e56e0b78 TM |
900 | struct nfs_openargs o_arg; |
901 | struct nfs_openres o_res; | |
cdd4e68b TM |
902 | struct nfs_open_confirmargs c_arg; |
903 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
904 | struct nfs4_string owner_name; |
905 | struct nfs4_string group_name; | |
e56e0b78 | 906 | struct nfs_fattr f_attr; |
1775fd3e | 907 | struct nfs4_label *f_label; |
e56e0b78 | 908 | struct dentry *dir; |
82a2c1b7 | 909 | struct dentry *dentry; |
e56e0b78 | 910 | struct nfs4_state_owner *owner; |
aac00a8d | 911 | struct nfs4_state *state; |
e56e0b78 | 912 | struct iattr attrs; |
26e976a8 | 913 | unsigned long timestamp; |
3e309914 | 914 | unsigned int rpc_done : 1; |
5bc2afc2 | 915 | unsigned int file_created : 1; |
bdeca1b7 | 916 | unsigned int is_recover : 1; |
24ac23ab TM |
917 | int rpc_status; |
918 | int cancelled; | |
e56e0b78 TM |
919 | }; |
920 | ||
49f9a0fa TM |
921 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
922 | int err, struct nfs4_exception *exception) | |
923 | { | |
924 | if (err != -EINVAL) | |
925 | return false; | |
926 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
927 | return false; | |
928 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
929 | exception->retry = 1; | |
930 | return true; | |
931 | } | |
932 | ||
933 | static enum open_claim_type4 | |
934 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
935 | enum open_claim_type4 claim) | |
936 | { | |
937 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
938 | return claim; | |
939 | switch (claim) { | |
940 | default: | |
941 | return claim; | |
942 | case NFS4_OPEN_CLAIM_FH: | |
943 | return NFS4_OPEN_CLAIM_NULL; | |
944 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
945 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
946 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
947 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
948 | } | |
949 | } | |
2ced46c2 TM |
950 | |
951 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
952 | { | |
953 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 954 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
955 | p->o_res.seqid = p->o_arg.seqid; |
956 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 957 | p->o_res.server = p->o_arg.server; |
5f657530 | 958 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 959 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 960 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
961 | } |
962 | ||
82a2c1b7 | 963 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 964 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 965 | const struct iattr *attrs, |
1775fd3e | 966 | struct nfs4_label *label, |
4a1c0893 | 967 | enum open_claim_type4 claim, |
8535b2be | 968 | gfp_t gfp_mask) |
e56e0b78 | 969 | { |
82a2c1b7 | 970 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
971 | struct inode *dir = parent->d_inode; |
972 | struct nfs_server *server = NFS_SERVER(dir); | |
973 | struct nfs4_opendata *p; | |
974 | ||
8535b2be | 975 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
976 | if (p == NULL) |
977 | goto err; | |
14c43f76 DQ |
978 | |
979 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
980 | if (IS_ERR(p->f_label)) | |
981 | goto err_free_p; | |
982 | ||
8535b2be | 983 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 984 | if (p->o_arg.seqid == NULL) |
14c43f76 | 985 | goto err_free_label; |
82a2c1b7 AV |
986 | nfs_sb_active(dentry->d_sb); |
987 | p->dentry = dget(dentry); | |
e56e0b78 TM |
988 | p->dir = parent; |
989 | p->owner = sp; | |
990 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
991 | p->o_arg.open_flags = flags; |
992 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
993 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
994 | * will return permission denied for all bits until close */ | |
995 | if (!(flags & O_EXCL)) { | |
996 | /* ask server to check for all possible rights as results | |
997 | * are cached */ | |
998 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
999 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1000 | } |
7539bbab | 1001 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1002 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1003 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1004 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1005 | p->o_arg.server = server; |
aa9c2669 | 1006 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1007 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 1008 | p->o_arg.label = label; |
49f9a0fa TM |
1009 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1010 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1011 | case NFS4_OPEN_CLAIM_NULL: |
1012 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1013 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1014 | p->o_arg.fh = NFS_FH(dir); | |
1015 | break; | |
1016 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1017 | case NFS4_OPEN_CLAIM_FH: | |
1018 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1019 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1020 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
1021 | } | |
536e43d1 | 1022 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1023 | __u32 verf[2]; |
d77d76ff | 1024 | |
e56e0b78 TM |
1025 | p->o_arg.u.attrs = &p->attrs; |
1026 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1027 | |
1028 | verf[0] = jiffies; | |
1029 | verf[1] = current->pid; | |
1030 | memcpy(p->o_arg.u.verifier.data, verf, | |
1031 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1032 | } |
cdd4e68b TM |
1033 | p->c_arg.fh = &p->o_res.fh; |
1034 | p->c_arg.stateid = &p->o_res.stateid; | |
1035 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1036 | nfs4_init_opendata_res(p); |
c6d00e63 | 1037 | kref_init(&p->kref); |
e56e0b78 | 1038 | return p; |
14c43f76 DQ |
1039 | |
1040 | err_free_label: | |
1041 | nfs4_label_free(p->f_label); | |
1042 | err_free_p: | |
e56e0b78 TM |
1043 | kfree(p); |
1044 | err: | |
1045 | dput(parent); | |
1046 | return NULL; | |
1047 | } | |
1048 | ||
c6d00e63 | 1049 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1050 | { |
c6d00e63 TM |
1051 | struct nfs4_opendata *p = container_of(kref, |
1052 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1053 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1054 | |
1055 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1056 | if (p->state != NULL) |
1057 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1058 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
1059 | |
1060 | nfs4_label_free(p->f_label); | |
1061 | ||
c6d00e63 | 1062 | dput(p->dir); |
82a2c1b7 AV |
1063 | dput(p->dentry); |
1064 | nfs_sb_deactive(sb); | |
6926afd1 | 1065 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
1066 | kfree(p); |
1067 | } | |
1068 | ||
1069 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1070 | { | |
1071 | if (p != NULL) | |
1072 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1073 | } |
1074 | ||
06f814a3 TM |
1075 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1076 | { | |
06f814a3 TM |
1077 | int ret; |
1078 | ||
06f814a3 | 1079 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1080 | return ret; |
1081 | } | |
1082 | ||
dc0b027d | 1083 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1084 | { |
1085 | int ret = 0; | |
dc0b027d | 1086 | |
536e43d1 | 1087 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1088 | goto out; |
1089 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1090 | case FMODE_READ: |
88069f77 TM |
1091 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1092 | && state->n_rdonly != 0; | |
6ee41268 TM |
1093 | break; |
1094 | case FMODE_WRITE: | |
88069f77 TM |
1095 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1096 | && state->n_wronly != 0; | |
6ee41268 TM |
1097 | break; |
1098 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1099 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1100 | && state->n_rdwr != 0; | |
6ee41268 | 1101 | } |
dc0b027d | 1102 | out: |
6ee41268 TM |
1103 | return ret; |
1104 | } | |
1105 | ||
dc0b027d | 1106 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1107 | { |
652f89f6 TM |
1108 | if (delegation == NULL) |
1109 | return 0; | |
dc0b027d | 1110 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1111 | return 0; |
15c831bf | 1112 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1113 | return 0; |
d25be546 TM |
1114 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1115 | return 0; | |
b7391f44 | 1116 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1117 | return 1; |
1118 | } | |
1119 | ||
dc0b027d | 1120 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1121 | { |
dc0b027d | 1122 | switch (fmode) { |
e7616923 TM |
1123 | case FMODE_WRITE: |
1124 | state->n_wronly++; | |
1125 | break; | |
1126 | case FMODE_READ: | |
1127 | state->n_rdonly++; | |
1128 | break; | |
1129 | case FMODE_READ|FMODE_WRITE: | |
1130 | state->n_rdwr++; | |
1131 | } | |
dc0b027d | 1132 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1133 | } |
1134 | ||
dc0b027d | 1135 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1136 | { |
1137 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1138 | nfs4_stateid_copy(&state->stateid, stateid); |
1139 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 1140 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 1141 | switch (fmode) { |
003707c7 TM |
1142 | case FMODE_READ: |
1143 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1144 | break; | |
1145 | case FMODE_WRITE: | |
1146 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1147 | break; | |
1148 | case FMODE_READ|FMODE_WRITE: | |
1149 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1150 | } | |
e7616923 TM |
1151 | } |
1152 | ||
dc0b027d | 1153 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1154 | { |
8bda4e4c | 1155 | write_seqlock(&state->seqlock); |
dc0b027d | 1156 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1157 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1158 | } |
1159 | ||
dc0b027d | 1160 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1161 | { |
8bda4e4c TM |
1162 | /* |
1163 | * Protect the call to nfs4_state_set_mode_locked and | |
1164 | * serialise the stateid update | |
1165 | */ | |
1166 | write_seqlock(&state->seqlock); | |
003707c7 | 1167 | if (deleg_stateid != NULL) { |
f597c537 | 1168 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1169 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1170 | } | |
1171 | if (open_stateid != NULL) | |
dc0b027d | 1172 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1173 | write_sequnlock(&state->seqlock); |
1174 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1175 | update_open_stateflags(state, fmode); |
ec073428 | 1176 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1177 | } |
1178 | ||
dc0b027d | 1179 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1180 | { |
1181 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1182 | struct nfs_delegation *deleg_cur; | |
1183 | int ret = 0; | |
1184 | ||
dc0b027d | 1185 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1186 | |
1187 | rcu_read_lock(); | |
1188 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1189 | if (deleg_cur == NULL) | |
1190 | goto no_delegation; | |
1191 | ||
1192 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1193 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1194 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1195 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1196 | goto no_delegation_unlock; |
1197 | ||
1198 | if (delegation == NULL) | |
1199 | delegation = &deleg_cur->stateid; | |
f597c537 | 1200 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1201 | goto no_delegation_unlock; |
1202 | ||
b7391f44 | 1203 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1204 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1205 | ret = 1; |
1206 | no_delegation_unlock: | |
1207 | spin_unlock(&deleg_cur->lock); | |
1208 | no_delegation: | |
1209 | rcu_read_unlock(); | |
1210 | ||
1211 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1212 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1213 | ret = 1; |
1214 | } | |
1215 | ||
1216 | return ret; | |
1217 | } | |
1218 | ||
1219 | ||
dc0b027d | 1220 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1221 | { |
1222 | struct nfs_delegation *delegation; | |
1223 | ||
1224 | rcu_read_lock(); | |
1225 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1226 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1227 | rcu_read_unlock(); |
1228 | return; | |
1229 | } | |
1230 | rcu_read_unlock(); | |
57ec14c5 | 1231 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1232 | } |
1233 | ||
6ee41268 | 1234 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1235 | { |
1236 | struct nfs4_state *state = opendata->state; | |
1237 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1238 | struct nfs_delegation *delegation; | |
f448badd | 1239 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1240 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1241 | nfs4_stateid stateid; |
1242 | int ret = -EAGAIN; | |
1243 | ||
aac00a8d | 1244 | for (;;) { |
dc0b027d | 1245 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1246 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1247 | if (can_open_cached(state, fmode, open_mode)) { |
1248 | update_open_stateflags(state, fmode); | |
6ee41268 | 1249 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1250 | goto out_return_state; |
1251 | } | |
1252 | spin_unlock(&state->owner->so_lock); | |
1253 | } | |
34310430 TM |
1254 | rcu_read_lock(); |
1255 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1256 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1257 | rcu_read_unlock(); |
aac00a8d | 1258 | break; |
34310430 | 1259 | } |
aac00a8d | 1260 | /* Save the delegation */ |
f597c537 | 1261 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1262 | rcu_read_unlock(); |
fa332941 | 1263 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1264 | if (!opendata->is_recover) { |
1265 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1266 | if (ret != 0) | |
1267 | goto out; | |
1268 | } | |
aac00a8d | 1269 | ret = -EAGAIN; |
34310430 TM |
1270 | |
1271 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1272 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1273 | goto out_return_state; |
aac00a8d | 1274 | } |
aac00a8d TM |
1275 | out: |
1276 | return ERR_PTR(ret); | |
1277 | out_return_state: | |
1278 | atomic_inc(&state->count); | |
1279 | return state; | |
1280 | } | |
1281 | ||
e23008ec AA |
1282 | static void |
1283 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1284 | { | |
1285 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1286 | struct nfs_delegation *delegation; | |
1287 | int delegation_flags = 0; | |
1288 | ||
1289 | rcu_read_lock(); | |
1290 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1291 | if (delegation) | |
1292 | delegation_flags = delegation->flags; | |
1293 | rcu_read_unlock(); | |
1294 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1295 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1296 | "returning a delegation for " | |
1297 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1298 | clp->cl_hostname); | |
1299 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1300 | nfs_inode_set_delegation(state->inode, | |
1301 | data->owner->so_cred, | |
1302 | &data->o_res); | |
1303 | else | |
1304 | nfs_inode_reclaim_delegation(state->inode, | |
1305 | data->owner->so_cred, | |
1306 | &data->o_res); | |
1307 | } | |
1308 | ||
1309 | /* | |
1310 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1311 | * and update the nfs4_state. | |
1312 | */ | |
1313 | static struct nfs4_state * | |
1314 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1315 | { | |
1316 | struct inode *inode = data->state->inode; | |
1317 | struct nfs4_state *state = data->state; | |
1318 | int ret; | |
1319 | ||
1320 | if (!data->rpc_done) { | |
1321 | ret = data->rpc_status; | |
1322 | goto err; | |
1323 | } | |
1324 | ||
1325 | ret = -ESTALE; | |
1326 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1327 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1328 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1329 | goto err; | |
1330 | ||
1331 | ret = -ENOMEM; | |
1332 | state = nfs4_get_open_state(inode, data->owner); | |
1333 | if (state == NULL) | |
1334 | goto err; | |
1335 | ||
1336 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1337 | if (ret) | |
1338 | goto err; | |
1339 | ||
aa9c2669 DQ |
1340 | nfs_setsecurity(inode, &data->f_attr, data->f_label); |
1341 | ||
e23008ec AA |
1342 | if (data->o_res.delegation_type != 0) |
1343 | nfs4_opendata_check_deleg(data, state); | |
1344 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1345 | data->o_arg.fmode); | |
1346 | ||
1347 | return state; | |
1348 | err: | |
1349 | return ERR_PTR(ret); | |
1350 | ||
1351 | } | |
1352 | ||
1353 | static struct nfs4_state * | |
1354 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1355 | { |
1356 | struct inode *inode; | |
1357 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1358 | int ret; |
24ac23ab | 1359 | |
aac00a8d | 1360 | if (!data->rpc_done) { |
6ee41268 | 1361 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1362 | goto out; |
1363 | } | |
1364 | ||
1b370bc2 | 1365 | ret = -EAGAIN; |
24ac23ab | 1366 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1367 | goto err; |
1775fd3e | 1368 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1369 | ret = PTR_ERR(inode); |
03f28e3a | 1370 | if (IS_ERR(inode)) |
1b370bc2 TM |
1371 | goto err; |
1372 | ret = -ENOMEM; | |
24ac23ab TM |
1373 | state = nfs4_get_open_state(inode, data->owner); |
1374 | if (state == NULL) | |
1b370bc2 | 1375 | goto err_put_inode; |
e23008ec AA |
1376 | if (data->o_res.delegation_type != 0) |
1377 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1378 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1379 | data->o_arg.fmode); |
24ac23ab | 1380 | iput(inode); |
aac00a8d | 1381 | out: |
7aa262b5 | 1382 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1383 | return state; |
1b370bc2 TM |
1384 | err_put_inode: |
1385 | iput(inode); | |
1386 | err: | |
1387 | return ERR_PTR(ret); | |
24ac23ab TM |
1388 | } |
1389 | ||
e23008ec AA |
1390 | static struct nfs4_state * |
1391 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1392 | { | |
1393 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1394 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1395 | return _nfs4_opendata_to_nfs4_state(data); | |
1396 | } | |
1397 | ||
864472e9 TM |
1398 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1399 | { | |
1400 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1401 | struct nfs_open_context *ctx; | |
1402 | ||
1403 | spin_lock(&state->inode->i_lock); | |
1404 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1405 | if (ctx->state != state) | |
1406 | continue; | |
1407 | get_nfs_open_context(ctx); | |
1408 | spin_unlock(&state->inode->i_lock); | |
1409 | return ctx; | |
1410 | } | |
1411 | spin_unlock(&state->inode->i_lock); | |
1412 | return ERR_PTR(-ENOENT); | |
1413 | } | |
1414 | ||
4a1c0893 TM |
1415 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1416 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1417 | { |
1418 | struct nfs4_opendata *opendata; | |
1419 | ||
4a1c0893 | 1420 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1421 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1422 | if (opendata == NULL) |
1423 | return ERR_PTR(-ENOMEM); | |
1424 | opendata->state = state; | |
1425 | atomic_inc(&state->count); | |
1426 | return opendata; | |
1427 | } | |
1428 | ||
dc0b027d | 1429 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1430 | { |
2ced46c2 | 1431 | struct nfs4_state *newstate; |
864472e9 TM |
1432 | int ret; |
1433 | ||
dc0b027d TM |
1434 | opendata->o_arg.open_flags = 0; |
1435 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1436 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1437 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1438 | nfs4_init_opendata_res(opendata); | |
b257957e | 1439 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1440 | if (ret != 0) |
1441 | return ret; | |
2ced46c2 | 1442 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1443 | if (IS_ERR(newstate)) |
1444 | return PTR_ERR(newstate); | |
643168c2 | 1445 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1446 | *res = newstate; |
864472e9 TM |
1447 | return 0; |
1448 | } | |
1449 | ||
1450 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1451 | { | |
864472e9 | 1452 | struct nfs4_state *newstate; |
864472e9 TM |
1453 | int ret; |
1454 | ||
1455 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1456 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1457 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1458 | smp_rmb(); |
1459 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1460 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1461 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1462 | if (ret != 0) |
1463 | return ret; | |
2ced46c2 TM |
1464 | if (newstate != state) |
1465 | return -ESTALE; | |
864472e9 TM |
1466 | } |
1467 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1468 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1469 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1470 | if (ret != 0) |
1471 | return ret; | |
2ced46c2 TM |
1472 | if (newstate != state) |
1473 | return -ESTALE; | |
864472e9 TM |
1474 | } |
1475 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1476 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1477 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1478 | if (ret != 0) |
1479 | return ret; | |
2ced46c2 TM |
1480 | if (newstate != state) |
1481 | return -ESTALE; | |
864472e9 | 1482 | } |
1ac7e2fd TM |
1483 | /* |
1484 | * We may have performed cached opens for all three recoveries. | |
1485 | * Check if we need to update the current stateid. | |
1486 | */ | |
1487 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1488 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1489 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1490 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1491 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1492 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1493 | } |
864472e9 TM |
1494 | return 0; |
1495 | } | |
1496 | ||
1da177e4 LT |
1497 | /* |
1498 | * OPEN_RECLAIM: | |
1499 | * reclaim state on the server after a reboot. | |
1da177e4 | 1500 | */ |
539cd03a | 1501 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1502 | { |
1ac7e2fd | 1503 | struct nfs_delegation *delegation; |
864472e9 | 1504 | struct nfs4_opendata *opendata; |
dc0b027d | 1505 | fmode_t delegation_type = 0; |
1da177e4 LT |
1506 | int status; |
1507 | ||
4a1c0893 TM |
1508 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1509 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1510 | if (IS_ERR(opendata)) |
1511 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1512 | rcu_read_lock(); |
1513 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1514 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1515 | delegation_type = delegation->type; |
1ac7e2fd | 1516 | rcu_read_unlock(); |
864472e9 TM |
1517 | opendata->o_arg.u.delegation_type = delegation_type; |
1518 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1519 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1520 | return status; |
1521 | } | |
1522 | ||
539cd03a | 1523 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1524 | { |
1525 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1526 | struct nfs4_exception exception = { }; | |
1527 | int err; | |
1528 | do { | |
539cd03a | 1529 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1530 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1531 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1532 | continue; | |
168667c4 | 1533 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1534 | break; |
1535 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1536 | } while (exception.retry); |
1537 | return err; | |
1538 | } | |
1539 | ||
864472e9 TM |
1540 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1541 | { | |
1542 | struct nfs_open_context *ctx; | |
1543 | int ret; | |
1544 | ||
1545 | ctx = nfs4_state_find_open_context(state); | |
1546 | if (IS_ERR(ctx)) | |
91876b13 | 1547 | return -EAGAIN; |
539cd03a | 1548 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1549 | put_nfs_open_context(ctx); |
1550 | return ret; | |
1551 | } | |
1552 | ||
db4f2e63 | 1553 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1554 | { |
be76b5b6 TM |
1555 | switch (err) { |
1556 | default: | |
1557 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1558 | "%d.\n", __func__, err); | |
1559 | case 0: | |
1560 | case -ENOENT: | |
1561 | case -ESTALE: | |
1562 | break; | |
1563 | case -NFS4ERR_BADSESSION: | |
1564 | case -NFS4ERR_BADSLOT: | |
1565 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1566 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1567 | case -NFS4ERR_DEADSESSION: | |
1568 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1569 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1570 | return -EAGAIN; | |
1571 | case -NFS4ERR_STALE_CLIENTID: | |
1572 | case -NFS4ERR_STALE_STATEID: | |
1573 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1574 | case -NFS4ERR_EXPIRED: | |
1575 | /* Don't recall a delegation if it was lost */ | |
1576 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1577 | return -EAGAIN; | |
1578 | case -NFS4ERR_DELEG_REVOKED: | |
1579 | case -NFS4ERR_ADMIN_REVOKED: | |
1580 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1581 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1582 | nfs_inode_find_state_and_recover(state->inode, |
1583 | stateid); | |
1584 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1585 | return 0; |
1586 | case -NFS4ERR_DELAY: | |
1587 | case -NFS4ERR_GRACE: | |
1588 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1589 | ssleep(1); | |
1590 | return -EAGAIN; | |
db4f2e63 TM |
1591 | case -ENOMEM: |
1592 | case -NFS4ERR_DENIED: | |
1593 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1594 | return 0; | |
be76b5b6 | 1595 | } |
1da177e4 LT |
1596 | return err; |
1597 | } | |
1598 | ||
db4f2e63 TM |
1599 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1600 | { | |
1601 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1602 | struct nfs4_opendata *opendata; | |
1603 | int err; | |
1604 | ||
1605 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1606 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1607 | if (IS_ERR(opendata)) | |
1608 | return PTR_ERR(opendata); | |
1609 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1610 | err = nfs4_open_recover(opendata, state); | |
1611 | nfs4_opendata_put(opendata); | |
1612 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1613 | } | |
1614 | ||
be05c860 CL |
1615 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1616 | { | |
1617 | struct nfs4_opendata *data = calldata; | |
1618 | ||
1619 | nfs40_setup_sequence(data->o_arg.server, &data->o_arg.seq_args, | |
1620 | &data->o_res.seq_res, task); | |
1621 | } | |
1622 | ||
cdd4e68b TM |
1623 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1624 | { | |
1625 | struct nfs4_opendata *data = calldata; | |
1626 | ||
be05c860 CL |
1627 | nfs40_sequence_done(task, &data->o_res.seq_res); |
1628 | ||
cdd4e68b | 1629 | data->rpc_status = task->tk_status; |
26e976a8 | 1630 | if (data->rpc_status == 0) { |
f597c537 | 1631 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1632 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1633 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1634 | data->rpc_done = 1; |
26e976a8 | 1635 | } |
cdd4e68b TM |
1636 | } |
1637 | ||
1638 | static void nfs4_open_confirm_release(void *calldata) | |
1639 | { | |
1640 | struct nfs4_opendata *data = calldata; | |
1641 | struct nfs4_state *state = NULL; | |
1642 | ||
1643 | /* If this request hasn't been cancelled, do nothing */ | |
1644 | if (data->cancelled == 0) | |
1645 | goto out_free; | |
1646 | /* In case of error, no cleanup! */ | |
3e309914 | 1647 | if (!data->rpc_done) |
cdd4e68b | 1648 | goto out_free; |
cdd4e68b | 1649 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1650 | if (!IS_ERR(state)) |
643168c2 | 1651 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1652 | out_free: |
c6d00e63 | 1653 | nfs4_opendata_put(data); |
cdd4e68b TM |
1654 | } |
1655 | ||
1656 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1657 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1658 | .rpc_call_done = nfs4_open_confirm_done, |
1659 | .rpc_release = nfs4_open_confirm_release, | |
1660 | }; | |
1661 | ||
1662 | /* | |
1663 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1664 | */ | |
1665 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1666 | { | |
1667 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1668 | struct rpc_task *task; | |
5138fde0 TM |
1669 | struct rpc_message msg = { |
1670 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1671 | .rpc_argp = &data->c_arg, | |
1672 | .rpc_resp = &data->c_res, | |
1673 | .rpc_cred = data->owner->so_cred, | |
1674 | }; | |
c970aa85 TM |
1675 | struct rpc_task_setup task_setup_data = { |
1676 | .rpc_client = server->client, | |
5138fde0 | 1677 | .rpc_message = &msg, |
c970aa85 TM |
1678 | .callback_ops = &nfs4_open_confirm_ops, |
1679 | .callback_data = data, | |
101070ca | 1680 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1681 | .flags = RPC_TASK_ASYNC, |
1682 | }; | |
1da177e4 LT |
1683 | int status; |
1684 | ||
be05c860 | 1685 | nfs4_init_sequence(&data->o_arg.seq_args, &data->o_res.seq_res, 1); |
c6d00e63 | 1686 | kref_get(&data->kref); |
3e309914 TM |
1687 | data->rpc_done = 0; |
1688 | data->rpc_status = 0; | |
5138fde0 | 1689 | data->timestamp = jiffies; |
c970aa85 | 1690 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1691 | if (IS_ERR(task)) |
cdd4e68b | 1692 | return PTR_ERR(task); |
cdd4e68b TM |
1693 | status = nfs4_wait_for_completion_rpc_task(task); |
1694 | if (status != 0) { | |
1695 | data->cancelled = 1; | |
1696 | smp_wmb(); | |
1697 | } else | |
1698 | status = data->rpc_status; | |
e6b3c4db | 1699 | rpc_put_task(task); |
1da177e4 LT |
1700 | return status; |
1701 | } | |
1702 | ||
24ac23ab | 1703 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1704 | { |
24ac23ab TM |
1705 | struct nfs4_opendata *data = calldata; |
1706 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1707 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1708 | |
24ac23ab | 1709 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1710 | goto out_wait; |
aac00a8d TM |
1711 | /* |
1712 | * Check if we still need to send an OPEN call, or if we can use | |
1713 | * a delegation instead. | |
1714 | */ | |
1715 | if (data->state != NULL) { | |
1716 | struct nfs_delegation *delegation; | |
1717 | ||
dc0b027d | 1718 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1719 | goto out_no_action; |
aac00a8d TM |
1720 | rcu_read_lock(); |
1721 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1722 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1723 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1724 | can_open_delegated(delegation, data->o_arg.fmode)) |
1725 | goto unlock_no_action; | |
aac00a8d TM |
1726 | rcu_read_unlock(); |
1727 | } | |
95b72eb0 | 1728 | /* Update client id. */ |
549b19cc | 1729 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1730 | switch (data->o_arg.claim) { |
1731 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1732 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1733 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1734 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1735 | case NFS4_OPEN_CLAIM_FH: |
1736 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1737 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1738 | } | |
26e976a8 | 1739 | data->timestamp = jiffies; |
035168ab | 1740 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1741 | &data->o_arg.seq_args, |
2240a9e2 TM |
1742 | &data->o_res.seq_res, |
1743 | task) != 0) | |
1744 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1745 | |
1746 | /* Set the create mode (note dependency on the session type) */ | |
1747 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1748 | if (data->o_arg.open_flags & O_EXCL) { | |
1749 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1750 | if (nfs4_has_persistent_session(clp)) | |
1751 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1752 | else if (clp->cl_mvops->minor_version > 0) | |
1753 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1754 | } | |
6ee41268 | 1755 | return; |
652f89f6 TM |
1756 | unlock_no_action: |
1757 | rcu_read_unlock(); | |
6ee41268 TM |
1758 | out_no_action: |
1759 | task->tk_action = NULL; | |
c8da19b9 | 1760 | out_wait: |
b75ad4cd | 1761 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1762 | } |
1763 | ||
24ac23ab TM |
1764 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1765 | { | |
1766 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1767 | |
24ac23ab | 1768 | data->rpc_status = task->tk_status; |
d898528c | 1769 | |
14516c3a TM |
1770 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1771 | return; | |
d898528c | 1772 | |
24ac23ab | 1773 | if (task->tk_status == 0) { |
807d66d8 TM |
1774 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1775 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1776 | case S_IFREG: |
1777 | break; | |
1778 | case S_IFLNK: | |
24ac23ab | 1779 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1780 | break; |
1781 | case S_IFDIR: | |
24ac23ab | 1782 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1783 | break; |
1784 | default: | |
24ac23ab | 1785 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1786 | } |
6f926b5b | 1787 | } |
26e976a8 | 1788 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1789 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1790 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1791 | } |
3e309914 | 1792 | data->rpc_done = 1; |
24ac23ab | 1793 | } |
6f926b5b | 1794 | |
24ac23ab TM |
1795 | static void nfs4_open_release(void *calldata) |
1796 | { | |
1797 | struct nfs4_opendata *data = calldata; | |
1798 | struct nfs4_state *state = NULL; | |
1799 | ||
1800 | /* If this request hasn't been cancelled, do nothing */ | |
1801 | if (data->cancelled == 0) | |
1802 | goto out_free; | |
1803 | /* In case of error, no cleanup! */ | |
3e309914 | 1804 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1805 | goto out_free; |
1806 | /* In case we need an open_confirm, no cleanup! */ | |
1807 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1808 | goto out_free; | |
24ac23ab | 1809 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1810 | if (!IS_ERR(state)) |
643168c2 | 1811 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1812 | out_free: |
c6d00e63 | 1813 | nfs4_opendata_put(data); |
24ac23ab TM |
1814 | } |
1815 | ||
1816 | static const struct rpc_call_ops nfs4_open_ops = { | |
1817 | .rpc_call_prepare = nfs4_open_prepare, | |
1818 | .rpc_call_done = nfs4_open_done, | |
1819 | .rpc_release = nfs4_open_release, | |
1820 | }; | |
1821 | ||
b257957e | 1822 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1823 | { |
1824 | struct inode *dir = data->dir->d_inode; | |
1825 | struct nfs_server *server = NFS_SERVER(dir); | |
1826 | struct nfs_openargs *o_arg = &data->o_arg; | |
1827 | struct nfs_openres *o_res = &data->o_res; | |
1828 | struct rpc_task *task; | |
5138fde0 TM |
1829 | struct rpc_message msg = { |
1830 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1831 | .rpc_argp = o_arg, | |
1832 | .rpc_resp = o_res, | |
1833 | .rpc_cred = data->owner->so_cred, | |
1834 | }; | |
c970aa85 TM |
1835 | struct rpc_task_setup task_setup_data = { |
1836 | .rpc_client = server->client, | |
5138fde0 | 1837 | .rpc_message = &msg, |
c970aa85 TM |
1838 | .callback_ops = &nfs4_open_ops, |
1839 | .callback_data = data, | |
101070ca | 1840 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1841 | .flags = RPC_TASK_ASYNC, |
1842 | }; | |
24ac23ab TM |
1843 | int status; |
1844 | ||
a9c92d6b | 1845 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1846 | kref_get(&data->kref); |
3e309914 TM |
1847 | data->rpc_done = 0; |
1848 | data->rpc_status = 0; | |
2ced46c2 | 1849 | data->cancelled = 0; |
bdeca1b7 TM |
1850 | data->is_recover = 0; |
1851 | if (isrecover) { | |
8fe72bac | 1852 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1853 | data->is_recover = 1; |
1854 | } | |
c970aa85 | 1855 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1856 | if (IS_ERR(task)) |
1857 | return PTR_ERR(task); | |
1858 | status = nfs4_wait_for_completion_rpc_task(task); | |
1859 | if (status != 0) { | |
1860 | data->cancelled = 1; | |
1861 | smp_wmb(); | |
1862 | } else | |
1863 | status = data->rpc_status; | |
1864 | rpc_put_task(task); | |
1865 | ||
1866 | return status; | |
1867 | } | |
1868 | ||
1869 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1870 | { | |
1871 | struct inode *dir = data->dir->d_inode; | |
1872 | struct nfs_openres *o_res = &data->o_res; | |
1873 | int status; | |
1874 | ||
1875 | status = nfs4_run_open_task(data, 1); | |
1876 | if (status != 0 || !data->rpc_done) | |
1877 | return status; | |
1878 | ||
6926afd1 TM |
1879 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1880 | ||
b257957e AB |
1881 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1882 | status = _nfs4_proc_open_confirm(data); | |
1883 | if (status != 0) | |
1884 | return status; | |
1885 | } | |
1886 | ||
1887 | return status; | |
1888 | } | |
1889 | ||
6168f62c WAA |
1890 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1891 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1892 | struct nfs4_state *state, fmode_t fmode, |
1893 | int openflags) | |
6168f62c WAA |
1894 | { |
1895 | struct nfs_access_entry cache; | |
1896 | u32 mask; | |
1897 | ||
1898 | /* access call failed or for some reason the server doesn't | |
1899 | * support any access modes -- defer access call until later */ | |
1900 | if (opendata->o_res.access_supported == 0) | |
1901 | return 0; | |
1902 | ||
1903 | mask = 0; | |
bbd3a8ee | 1904 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1905 | * write mode bits, but POSIX allows the creating process to write. |
1906 | * use openflags to check for exec, because fmode won't | |
1907 | * always have FMODE_EXEC set when file open for exec. */ | |
1908 | if (openflags & __FMODE_EXEC) { | |
1909 | /* ONLY check for exec rights */ | |
1910 | mask = MAY_EXEC; | |
1911 | } else if (fmode & FMODE_READ) | |
1912 | mask = MAY_READ; | |
6168f62c WAA |
1913 | |
1914 | cache.cred = cred; | |
1915 | cache.jiffies = jiffies; | |
1916 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1917 | nfs_access_add_cache(state->inode, &cache); | |
1918 | ||
bbd3a8ee | 1919 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1920 | return 0; |
1921 | ||
1922 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1923 | nfs4_close_state(state, fmode); | |
998f40b5 | 1924 | return -EACCES; |
6168f62c WAA |
1925 | } |
1926 | ||
b257957e AB |
1927 | /* |
1928 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1929 | */ | |
1930 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1931 | { | |
1932 | struct inode *dir = data->dir->d_inode; | |
1933 | struct nfs_server *server = NFS_SERVER(dir); | |
1934 | struct nfs_openargs *o_arg = &data->o_arg; | |
1935 | struct nfs_openres *o_res = &data->o_res; | |
1936 | int status; | |
1937 | ||
1938 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1939 | if (!data->rpc_done) |
1940 | return status; | |
1941 | if (status != 0) { | |
1942 | if (status == -NFS4ERR_BADNAME && | |
1943 | !(o_arg->open_flags & O_CREAT)) | |
1944 | return -ENOENT; | |
24ac23ab | 1945 | return status; |
08ef7bd3 | 1946 | } |
24ac23ab | 1947 | |
6926afd1 TM |
1948 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1949 | ||
5bc2afc2 | 1950 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 1951 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
1952 | if (o_arg->open_flags & O_EXCL) |
1953 | data->file_created = 1; | |
1954 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
1955 | data->file_created = 1; | |
1956 | } | |
0df5dd4a TM |
1957 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1958 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1959 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1960 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1961 | if (status != 0) |
24ac23ab | 1962 | return status; |
1da177e4 LT |
1963 | } |
1964 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1965 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1966 | return 0; |
1da177e4 LT |
1967 | } |
1968 | ||
d83217c1 AA |
1969 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1970 | { | |
1971 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1972 | } | |
1973 | ||
1da177e4 LT |
1974 | /* |
1975 | * OPEN_EXPIRED: | |
1976 | * reclaim state on the server after a network partition. | |
1977 | * Assumes caller holds the appropriate lock | |
1978 | */ | |
539cd03a | 1979 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1980 | { |
e56e0b78 | 1981 | struct nfs4_opendata *opendata; |
864472e9 | 1982 | int ret; |
1da177e4 | 1983 | |
4a1c0893 | 1984 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1985 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1986 | if (IS_ERR(opendata)) |
1987 | return PTR_ERR(opendata); | |
864472e9 | 1988 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1989 | if (ret == -ESTALE) |
3d4ff43d | 1990 | d_drop(ctx->dentry); |
c6d00e63 | 1991 | nfs4_opendata_put(opendata); |
864472e9 | 1992 | return ret; |
1da177e4 LT |
1993 | } |
1994 | ||
a9ed2e25 | 1995 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1996 | { |
539cd03a | 1997 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1998 | struct nfs4_exception exception = { }; |
1999 | int err; | |
2000 | ||
2001 | do { | |
539cd03a | 2002 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2003 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2004 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2005 | continue; | |
a9ed2e25 TM |
2006 | switch (err) { |
2007 | default: | |
2008 | goto out; | |
2009 | case -NFS4ERR_GRACE: | |
2010 | case -NFS4ERR_DELAY: | |
2011 | nfs4_handle_exception(server, err, &exception); | |
2012 | err = 0; | |
2013 | } | |
202b50dc | 2014 | } while (exception.retry); |
a9ed2e25 | 2015 | out: |
202b50dc TM |
2016 | return err; |
2017 | } | |
2018 | ||
1da177e4 LT |
2019 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2020 | { | |
1da177e4 | 2021 | struct nfs_open_context *ctx; |
864472e9 | 2022 | int ret; |
1da177e4 | 2023 | |
864472e9 TM |
2024 | ctx = nfs4_state_find_open_context(state); |
2025 | if (IS_ERR(ctx)) | |
91876b13 | 2026 | return -EAGAIN; |
539cd03a | 2027 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2028 | put_nfs_open_context(ctx); |
2029 | return ret; | |
1da177e4 LT |
2030 | } |
2031 | ||
f062eb6c | 2032 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 2033 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2034 | { |
f062eb6c | 2035 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 2036 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
2037 | struct nfs_delegation *delegation; |
2038 | struct rpc_cred *cred = NULL; | |
2039 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
2040 | |
2041 | /* If a state reset has been done, test_stateid is unneeded */ | |
2042 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
2043 | return; | |
2044 | ||
ab7cb0df TM |
2045 | /* Get the delegation credential for use by test/free_stateid */ |
2046 | rcu_read_lock(); | |
2047 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
2048 | if (delegation != NULL && | |
2049 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
2050 | cred = get_rpccred(delegation->cred); | |
2051 | rcu_read_unlock(); | |
2052 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 2053 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
2054 | } else |
2055 | rcu_read_unlock(); | |
2056 | ||
3e60ffdd CL |
2057 | if (status != NFS_OK) { |
2058 | /* Free the stateid unless the server explicitly | |
2059 | * informs us the stateid is unrecognized. */ | |
2060 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2061 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 2062 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2063 | |
6938867e BS |
2064 | write_seqlock(&state->seqlock); |
2065 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2066 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2067 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2068 | } | |
ab7cb0df TM |
2069 | |
2070 | if (cred != NULL) | |
2071 | put_rpccred(cred); | |
3e60ffdd CL |
2072 | } |
2073 | ||
2074 | /** | |
2075 | * nfs41_check_open_stateid - possibly free an open stateid | |
2076 | * | |
2077 | * @state: NFSv4 state for an inode | |
2078 | * | |
2079 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2080 | * Otherwise a negative NFS4ERR value is returned. | |
2081 | */ | |
2082 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2083 | { | |
2084 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2085 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2086 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2087 | int status; |
2088 | ||
2089 | /* If a state reset has been done, test_stateid is unneeded */ | |
2090 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2091 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2092 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2093 | return -NFS4ERR_BAD_STATEID; | |
2094 | ||
ab7cb0df | 2095 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2096 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2097 | if (status != NFS_OK) { |
2098 | /* Free the stateid unless the server explicitly | |
2099 | * informs us the stateid is unrecognized. */ | |
2100 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2101 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2102 | |
2103 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2104 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2105 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2106 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2107 | } |
2108 | return status; | |
2109 | } | |
2110 | ||
2111 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2112 | { | |
eb64cf96 | 2113 | int status; |
b01dd1d8 | 2114 | |
3e60ffdd CL |
2115 | nfs41_clear_delegation_stateid(state); |
2116 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2117 | if (status != NFS_OK) |
2118 | status = nfs4_open_expired(sp, state); | |
2119 | return status; | |
f062eb6c BS |
2120 | } |
2121 | #endif | |
2122 | ||
aa53ed54 JL |
2123 | /* |
2124 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2125 | * fields corresponding to attributes that were used to store the verifier. | |
2126 | * Make sure we clobber those fields in the later setattr call | |
2127 | */ | |
2128 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2129 | { | |
2130 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2131 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2132 | sattr->ia_valid |= ATTR_ATIME; | |
2133 | ||
2134 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2135 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2136 | sattr->ia_valid |= ATTR_MTIME; | |
2137 | } | |
2138 | ||
c21443c2 TM |
2139 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2140 | fmode_t fmode, | |
2141 | int flags, | |
3efb9722 | 2142 | struct nfs_open_context *ctx) |
c21443c2 TM |
2143 | { |
2144 | struct nfs4_state_owner *sp = opendata->owner; | |
2145 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2146 | struct dentry *dentry; |
c21443c2 TM |
2147 | struct nfs4_state *state; |
2148 | unsigned int seq; | |
2149 | int ret; | |
2150 | ||
2151 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2152 | ||
2153 | ret = _nfs4_proc_open(opendata); | |
2154 | if (ret != 0) | |
2155 | goto out; | |
2156 | ||
2157 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2158 | ret = PTR_ERR(state); | |
2159 | if (IS_ERR(state)) | |
2160 | goto out; | |
2161 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2162 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2163 | ||
275bb307 TM |
2164 | dentry = opendata->dentry; |
2165 | if (dentry->d_inode == NULL) { | |
2166 | /* FIXME: Is this d_drop() ever needed? */ | |
2167 | d_drop(dentry); | |
2168 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2169 | if (dentry == NULL) { | |
2170 | dentry = opendata->dentry; | |
2171 | } else if (dentry != ctx->dentry) { | |
2172 | dput(ctx->dentry); | |
2173 | ctx->dentry = dget(dentry); | |
2174 | } | |
2175 | nfs_set_verifier(dentry, | |
2176 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2177 | } | |
2178 | ||
c21443c2 TM |
2179 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2180 | if (ret != 0) | |
2181 | goto out; | |
2182 | ||
3efb9722 | 2183 | ctx->state = state; |
c45ffdd2 TM |
2184 | if (dentry->d_inode == state->inode) { |
2185 | nfs_inode_attach_open_context(ctx); | |
2186 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2187 | nfs4_schedule_stateid_recovery(server, state); | |
2188 | } | |
c21443c2 TM |
2189 | out: |
2190 | return ret; | |
2191 | } | |
2192 | ||
1da177e4 | 2193 | /* |
24ac23ab | 2194 | * Returns a referenced nfs4_state |
1da177e4 | 2195 | */ |
82be417a | 2196 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2197 | struct nfs_open_context *ctx, |
82be417a AA |
2198 | int flags, |
2199 | struct iattr *sattr, | |
5bc2afc2 TM |
2200 | struct nfs4_label *label, |
2201 | int *opened) | |
1da177e4 LT |
2202 | { |
2203 | struct nfs4_state_owner *sp; | |
2204 | struct nfs4_state *state = NULL; | |
2205 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2206 | struct nfs4_opendata *opendata; |
4197a055 TM |
2207 | struct dentry *dentry = ctx->dentry; |
2208 | struct rpc_cred *cred = ctx->cred; | |
2209 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2210 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2211 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2212 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2213 | int status; |
1da177e4 LT |
2214 | |
2215 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2216 | status = -ENOMEM; |
d1e284d5 TM |
2217 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2218 | if (sp == NULL) { | |
1da177e4 LT |
2219 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2220 | goto out_err; | |
2221 | } | |
58d9714a TM |
2222 | status = nfs4_recover_expired_lease(server); |
2223 | if (status != 0) | |
b4454fe1 | 2224 | goto err_put_state_owner; |
82a2c1b7 AV |
2225 | if (dentry->d_inode != NULL) |
2226 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2227 | status = -ENOMEM; |
49f9a0fa TM |
2228 | if (dentry->d_inode) |
2229 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2230 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2231 | label, claim, GFP_KERNEL); |
e56e0b78 | 2232 | if (opendata == NULL) |
95d35cb4 | 2233 | goto err_put_state_owner; |
1da177e4 | 2234 | |
14c43f76 DQ |
2235 | if (label) { |
2236 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2237 | if (IS_ERR(olabel)) { | |
2238 | status = PTR_ERR(olabel); | |
2239 | goto err_opendata_put; | |
2240 | } | |
2241 | } | |
2242 | ||
82be417a AA |
2243 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2244 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2245 | if (!opendata->f_attr.mdsthreshold) | |
14c43f76 | 2246 | goto err_free_label; |
1549210f | 2247 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2248 | } |
82a2c1b7 AV |
2249 | if (dentry->d_inode != NULL) |
2250 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2251 | |
3efb9722 | 2252 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2253 | if (status != 0) |
14c43f76 | 2254 | goto err_free_label; |
3efb9722 | 2255 | state = ctx->state; |
6168f62c | 2256 | |
549b19cc TM |
2257 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2258 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2259 | nfs4_exclusive_attrset(opendata, sattr); |
2260 | ||
2261 | nfs_fattr_init(opendata->o_res.f_attr); | |
2262 | status = nfs4_do_setattr(state->inode, cred, | |
2263 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2264 | state, label, olabel); |
2265 | if (status == 0) { | |
0ab64e0e | 2266 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2267 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2268 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2269 | } |
0ab64e0e | 2270 | } |
5bc2afc2 TM |
2271 | if (opendata->file_created) |
2272 | *opened |= FILE_CREATED; | |
82be417a AA |
2273 | |
2274 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2275 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2276 | else | |
2277 | kfree(opendata->f_attr.mdsthreshold); | |
2278 | opendata->f_attr.mdsthreshold = NULL; | |
2279 | ||
14c43f76 DQ |
2280 | nfs4_label_free(olabel); |
2281 | ||
c6d00e63 | 2282 | nfs4_opendata_put(opendata); |
1da177e4 | 2283 | nfs4_put_state_owner(sp); |
1da177e4 | 2284 | return 0; |
14c43f76 DQ |
2285 | err_free_label: |
2286 | nfs4_label_free(olabel); | |
c6d00e63 | 2287 | err_opendata_put: |
82be417a | 2288 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2289 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2290 | err_put_state_owner: |
2291 | nfs4_put_state_owner(sp); | |
1da177e4 | 2292 | out_err: |
1da177e4 LT |
2293 | return status; |
2294 | } | |
2295 | ||
2296 | ||
82be417a | 2297 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2298 | struct nfs_open_context *ctx, |
82be417a AA |
2299 | int flags, |
2300 | struct iattr *sattr, | |
5bc2afc2 TM |
2301 | struct nfs4_label *label, |
2302 | int *opened) | |
1da177e4 | 2303 | { |
49f9a0fa | 2304 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2305 | struct nfs4_exception exception = { }; |
2306 | struct nfs4_state *res; | |
2307 | int status; | |
2308 | ||
2309 | do { | |
5bc2afc2 | 2310 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2311 | res = ctx->state; |
42113a75 | 2312 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2313 | if (status == 0) |
2314 | break; | |
2315 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2316 | * book-keeping w.r.t. state-changing operations | |
2317 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2318 | * It is actually a sign of a bug on the client or on the server. | |
2319 | * | |
2320 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2321 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2322 | * have unhashed the old state_owner for us, and that we can |
2323 | * therefore safely retry using a new one. We should still warn | |
2324 | * the user though... | |
2325 | */ | |
2326 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2327 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2328 | " returned a bad sequence-id error!\n", |
2329 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2330 | exception.retry = 1; |
2331 | continue; | |
2332 | } | |
550f5747 TM |
2333 | /* |
2334 | * BAD_STATEID on OPEN means that the server cancelled our | |
2335 | * state before it received the OPEN_CONFIRM. | |
2336 | * Recover by retrying the request as per the discussion | |
2337 | * on Page 181 of RFC3530. | |
2338 | */ | |
2339 | if (status == -NFS4ERR_BAD_STATEID) { | |
2340 | exception.retry = 1; | |
2341 | continue; | |
2342 | } | |
aac00a8d TM |
2343 | if (status == -EAGAIN) { |
2344 | /* We must have found a delegation */ | |
2345 | exception.retry = 1; | |
2346 | continue; | |
2347 | } | |
49f9a0fa TM |
2348 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2349 | continue; | |
2350 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2351 | status, &exception)); |
2352 | } while (exception.retry); | |
2353 | return res; | |
2354 | } | |
2355 | ||
659bfcd6 TM |
2356 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2357 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2358 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2359 | struct nfs4_label *olabel) | |
1da177e4 | 2360 | { |
3e4f6290 | 2361 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2362 | struct nfs_setattrargs arg = { |
3e4f6290 | 2363 | .fh = NFS_FH(inode), |
1da177e4 LT |
2364 | .iap = sattr, |
2365 | .server = server, | |
2366 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2367 | .label = ilabel, |
1da177e4 LT |
2368 | }; |
2369 | struct nfs_setattrres res = { | |
2370 | .fattr = fattr, | |
1775fd3e | 2371 | .label = olabel, |
1da177e4 LT |
2372 | .server = server, |
2373 | }; | |
2374 | struct rpc_message msg = { | |
659bfcd6 TM |
2375 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2376 | .rpc_argp = &arg, | |
2377 | .rpc_resp = &res, | |
2378 | .rpc_cred = cred, | |
1da177e4 | 2379 | }; |
26e976a8 | 2380 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2381 | fmode_t fmode; |
2382 | bool truncate; | |
65e4308d | 2383 | int status; |
1da177e4 | 2384 | |
aa9c2669 DQ |
2385 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2386 | if (ilabel) | |
2387 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2388 | ||
0e574af1 | 2389 | nfs_fattr_init(fattr); |
1da177e4 | 2390 | |
ee3ae84e TM |
2391 | /* Servers should only apply open mode checks for file size changes */ |
2392 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2393 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2394 | ||
2395 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2396 | /* Use that stateid */ | |
2397 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2398 | struct nfs_lockowner lockowner = { |
2399 | .l_owner = current->files, | |
2400 | .l_pid = current->tgid, | |
2401 | }; | |
4fc8796d | 2402 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2403 | &lockowner); |
08e9eac4 | 2404 | } else |
f597c537 | 2405 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2406 | |
7c513058 | 2407 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2408 | if (status == 0 && state != NULL) |
2409 | renew_lease(server, timestamp); | |
65e4308d | 2410 | return status; |
1da177e4 LT |
2411 | } |
2412 | ||
659bfcd6 TM |
2413 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2414 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2415 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2416 | struct nfs4_label *olabel) | |
1da177e4 | 2417 | { |
3e4f6290 | 2418 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2419 | struct nfs4_exception exception = { |
2420 | .state = state, | |
3114ea7a | 2421 | .inode = inode, |
a1d0b5ee | 2422 | }; |
1da177e4 LT |
2423 | int err; |
2424 | do { | |
1775fd3e | 2425 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2426 | trace_nfs4_setattr(inode, err); |
451146be TM |
2427 | switch (err) { |
2428 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2429 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2430 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2431 | "applying open mode checks to " | |
2432 | "a SETATTR that is not " | |
2433 | "changing file size.\n", | |
2434 | server->nfs_client->cl_hostname); | |
2435 | } | |
451146be TM |
2436 | if (state && !(state->state & FMODE_WRITE)) { |
2437 | err = -EBADF; | |
2438 | if (sattr->ia_valid & ATTR_OPEN) | |
2439 | err = -EACCES; | |
2440 | goto out; | |
2441 | } | |
2442 | } | |
2443 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2444 | } while (exception.retry); |
451146be | 2445 | out: |
1da177e4 LT |
2446 | return err; |
2447 | } | |
2448 | ||
2449 | struct nfs4_closedata { | |
2450 | struct inode *inode; | |
2451 | struct nfs4_state *state; | |
2452 | struct nfs_closeargs arg; | |
2453 | struct nfs_closeres res; | |
516a6af6 | 2454 | struct nfs_fattr fattr; |
26e976a8 | 2455 | unsigned long timestamp; |
f7e8917a FI |
2456 | bool roc; |
2457 | u32 roc_barrier; | |
1da177e4 LT |
2458 | }; |
2459 | ||
963d8fe5 | 2460 | static void nfs4_free_closedata(void *data) |
9512135d | 2461 | { |
963d8fe5 TM |
2462 | struct nfs4_closedata *calldata = data; |
2463 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2464 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2465 | |
f7e8917a FI |
2466 | if (calldata->roc) |
2467 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2468 | nfs4_put_open_state(calldata->state); |
2469 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2470 | nfs4_put_state_owner(sp); |
322b2b90 | 2471 | nfs_sb_deactive(sb); |
9512135d TM |
2472 | kfree(calldata); |
2473 | } | |
2474 | ||
88069f77 TM |
2475 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2476 | fmode_t fmode) | |
2477 | { | |
2478 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2479 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2480 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2481 | case FMODE_WRITE: | |
88069f77 | 2482 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2483 | break; |
2484 | case FMODE_READ: | |
88069f77 | 2485 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2486 | break; |
2487 | case 0: | |
2488 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2489 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2490 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2491 | } | |
88069f77 TM |
2492 | spin_unlock(&state->owner->so_lock); |
2493 | } | |
2494 | ||
963d8fe5 | 2495 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2496 | { |
963d8fe5 | 2497 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2498 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2499 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2500 | ||
a3ca5651 | 2501 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2502 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2503 | return; | |
42113a75 | 2504 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2505 | /* hmm. we are done with the inode, and in the process of freeing |
2506 | * the state_owner. we keep this around to process errors | |
2507 | */ | |
1da177e4 LT |
2508 | switch (task->tk_status) { |
2509 | case 0: | |
f7e8917a FI |
2510 | if (calldata->roc) |
2511 | pnfs_roc_set_barrier(state->inode, | |
2512 | calldata->roc_barrier); | |
45328c35 | 2513 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2514 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2515 | nfs4_close_clear_stateid_flags(state, |
2516 | calldata->arg.fmode); | |
1da177e4 LT |
2517 | break; |
2518 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2519 | case -NFS4ERR_OLD_STATEID: |
2520 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2521 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2522 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2523 | break; |
1da177e4 | 2524 | default: |
72211dbe TM |
2525 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2526 | rpc_restart_call_prepare(task); | |
1da177e4 | 2527 | } |
72211dbe | 2528 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2529 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2530 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2531 | } |
2532 | ||
4ce70ada | 2533 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2534 | { |
4ce70ada | 2535 | struct nfs4_closedata *calldata = data; |
9512135d | 2536 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2537 | struct inode *inode = calldata->inode; |
88069f77 | 2538 | int call_close = 0; |
9512135d | 2539 | |
a3ca5651 | 2540 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2541 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2542 | goto out_wait; |
003707c7 | 2543 | |
88069f77 TM |
2544 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2545 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2546 | spin_lock(&state->owner->so_lock); |
003707c7 | 2547 | /* Calculate the change in open mode */ |
e7616923 | 2548 | if (state->n_rdwr == 0) { |
003707c7 | 2549 | if (state->n_rdonly == 0) { |
88069f77 TM |
2550 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2551 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2552 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2553 | } |
2554 | if (state->n_wronly == 0) { | |
88069f77 TM |
2555 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2556 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2557 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2558 | } |
e7616923 | 2559 | } |
5d422301 TM |
2560 | if (!nfs4_valid_open_stateid(state)) |
2561 | call_close = 0; | |
4cecb76f | 2562 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2563 | |
2564 | if (!call_close) { | |
963d8fe5 | 2565 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2566 | goto out_no_action; |
9512135d | 2567 | } |
88069f77 | 2568 | |
f7e8917a | 2569 | if (calldata->arg.fmode == 0) { |
88069f77 | 2570 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2571 | if (calldata->roc && |
b9536ad5 AA |
2572 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2573 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2574 | goto out_wait; |
b9536ad5 | 2575 | } |
f7e8917a | 2576 | } |
88069f77 | 2577 | |
516a6af6 | 2578 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2579 | calldata->timestamp = jiffies; |
7fdab069 | 2580 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2581 | &calldata->arg.seq_args, |
2582 | &calldata->res.seq_res, | |
2240a9e2 TM |
2583 | task) != 0) |
2584 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2585 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2586 | return; |
2587 | out_no_action: | |
2588 | task->tk_action = NULL; | |
2589 | out_wait: | |
2590 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2591 | } |
2592 | ||
963d8fe5 | 2593 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2594 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2595 | .rpc_call_done = nfs4_close_done, |
2596 | .rpc_release = nfs4_free_closedata, | |
2597 | }; | |
2598 | ||
1da177e4 LT |
2599 | /* |
2600 | * It is possible for data to be read/written from a mem-mapped file | |
2601 | * after the sys_close call (which hits the vfs layer as a flush). | |
2602 | * This means that we can't safely call nfsv4 close on a file until | |
2603 | * the inode is cleared. This in turn means that we are not good | |
2604 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2605 | * share state even when we are done with one of the three share | |
2606 | * stateid's in the inode. | |
2607 | * | |
2608 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2609 | */ | |
1f7977c1 | 2610 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2611 | { |
4a35bd41 | 2612 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2613 | struct nfs4_closedata *calldata; |
b39e625b TM |
2614 | struct nfs4_state_owner *sp = state->owner; |
2615 | struct rpc_task *task; | |
5138fde0 TM |
2616 | struct rpc_message msg = { |
2617 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2618 | .rpc_cred = state->owner->so_cred, | |
2619 | }; | |
c970aa85 TM |
2620 | struct rpc_task_setup task_setup_data = { |
2621 | .rpc_client = server->client, | |
5138fde0 | 2622 | .rpc_message = &msg, |
c970aa85 | 2623 | .callback_ops = &nfs4_close_ops, |
101070ca | 2624 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2625 | .flags = RPC_TASK_ASYNC, |
2626 | }; | |
9512135d | 2627 | int status = -ENOMEM; |
1da177e4 | 2628 | |
fa940720 WAA |
2629 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2630 | &task_setup_data.rpc_client, &msg); | |
2631 | ||
8535b2be | 2632 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2633 | if (calldata == NULL) |
9512135d | 2634 | goto out; |
a9c92d6b | 2635 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2636 | calldata->inode = state->inode; |
1da177e4 | 2637 | calldata->state = state; |
4a35bd41 | 2638 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2639 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2640 | /* Serialization for the sequence id */ |
8535b2be | 2641 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2642 | if (calldata->arg.seqid == NULL) |
2643 | goto out_free_calldata; | |
dc0b027d | 2644 | calldata->arg.fmode = 0; |
a65318bf | 2645 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2646 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2647 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2648 | calldata->res.server = server; |
1f7977c1 | 2649 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2650 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2651 | |
1174dd1f TM |
2652 | msg.rpc_argp = &calldata->arg; |
2653 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2654 | task_setup_data.callback_data = calldata; |
2655 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2656 | if (IS_ERR(task)) |
2657 | return PTR_ERR(task); | |
a49c3c77 TM |
2658 | status = 0; |
2659 | if (wait) | |
2660 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2661 | rpc_put_task(task); |
a49c3c77 | 2662 | return status; |
9512135d TM |
2663 | out_free_calldata: |
2664 | kfree(calldata); | |
2665 | out: | |
b39e625b TM |
2666 | nfs4_put_open_state(state); |
2667 | nfs4_put_state_owner(sp); | |
9512135d | 2668 | return status; |
1da177e4 LT |
2669 | } |
2670 | ||
2b484297 | 2671 | static struct inode * |
5bc2afc2 TM |
2672 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2673 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2674 | { |
1da177e4 | 2675 | struct nfs4_state *state; |
aa9c2669 DQ |
2676 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2677 | ||
2678 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2679 | |
565277f6 | 2680 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2681 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2682 | |
2683 | nfs4_label_release_security(label); | |
2684 | ||
f46e0bd3 TM |
2685 | if (IS_ERR(state)) |
2686 | return ERR_CAST(state); | |
275bb307 | 2687 | return state->inode; |
1da177e4 LT |
2688 | } |
2689 | ||
1185a552 | 2690 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2691 | { |
2692 | if (ctx->state == NULL) | |
2693 | return; | |
2694 | if (is_sync) | |
643168c2 | 2695 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2696 | else |
643168c2 | 2697 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2698 | } |
1da177e4 LT |
2699 | |
2700 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2701 | { | |
43652ad5 BH |
2702 | struct nfs4_server_caps_arg args = { |
2703 | .fhandle = fhandle, | |
2704 | }; | |
1da177e4 LT |
2705 | struct nfs4_server_caps_res res = {}; |
2706 | struct rpc_message msg = { | |
2707 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2708 | .rpc_argp = &args, |
1da177e4 LT |
2709 | .rpc_resp = &res, |
2710 | }; | |
2711 | int status; | |
2712 | ||
7c513058 | 2713 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2714 | if (status == 0) { |
2715 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2716 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2717 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2718 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2719 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2720 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2721 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2722 | server->caps |= NFS_CAP_ACLS; | |
2723 | if (res.has_links != 0) | |
2724 | server->caps |= NFS_CAP_HARDLINKS; | |
2725 | if (res.has_symlinks != 0) | |
2726 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2727 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2728 | server->caps |= NFS_CAP_FILEID; | |
2729 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2730 | server->caps |= NFS_CAP_MODE; | |
2731 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2732 | server->caps |= NFS_CAP_NLINK; | |
2733 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2734 | server->caps |= NFS_CAP_OWNER; | |
2735 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2736 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2737 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2738 | server->caps |= NFS_CAP_ATIME; | |
2739 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2740 | server->caps |= NFS_CAP_CTIME; | |
2741 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2742 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2743 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2744 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2745 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2746 | #endif | |
2747 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2748 | sizeof(server->attr_bitmask)); | |
62ab460c | 2749 | |
aa9c2669 DQ |
2750 | if (server->caps & NFS_CAP_SECURITY_LABEL) { |
2751 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2752 | res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2753 | } | |
a65318bf TM |
2754 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2755 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2756 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2757 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2758 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2759 | } |
cccef3b9 | 2760 | |
1da177e4 LT |
2761 | return status; |
2762 | } | |
2763 | ||
55a97593 | 2764 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2765 | { |
2766 | struct nfs4_exception exception = { }; | |
2767 | int err; | |
2768 | do { | |
2769 | err = nfs4_handle_exception(server, | |
2770 | _nfs4_server_capabilities(server, fhandle), | |
2771 | &exception); | |
2772 | } while (exception.retry); | |
2773 | return err; | |
2774 | } | |
2775 | ||
2776 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2777 | struct nfs_fsinfo *info) | |
2778 | { | |
aa9c2669 | 2779 | u32 bitmask[3]; |
1da177e4 | 2780 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2781 | .bitmask = bitmask, |
1da177e4 LT |
2782 | }; |
2783 | struct nfs4_lookup_res res = { | |
2784 | .server = server, | |
0e574af1 | 2785 | .fattr = info->fattr, |
1da177e4 LT |
2786 | .fh = fhandle, |
2787 | }; | |
2788 | struct rpc_message msg = { | |
2789 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2790 | .rpc_argp = &args, | |
2791 | .rpc_resp = &res, | |
2792 | }; | |
008f55d0 | 2793 | |
aa9c2669 DQ |
2794 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2795 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2796 | /* | |
2797 | * Process the label in the upcoming getfattr | |
2798 | */ | |
2799 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2800 | ||
0e574af1 | 2801 | nfs_fattr_init(info->fattr); |
7c513058 | 2802 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2803 | } |
2804 | ||
2805 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2806 | struct nfs_fsinfo *info) | |
2807 | { | |
2808 | struct nfs4_exception exception = { }; | |
2809 | int err; | |
2810 | do { | |
fb8a5ba8 | 2811 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2812 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2813 | switch (err) { |
2814 | case 0: | |
2815 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2816 | goto out; |
fb8a5ba8 BS |
2817 | default: |
2818 | err = nfs4_handle_exception(server, err, &exception); | |
2819 | } | |
1da177e4 | 2820 | } while (exception.retry); |
05e9cfb4 | 2821 | out: |
1da177e4 LT |
2822 | return err; |
2823 | } | |
2824 | ||
8f70e95f BS |
2825 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2826 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2827 | { | |
c2190661 TM |
2828 | struct rpc_auth_create_args auth_args = { |
2829 | .pseudoflavor = flavor, | |
2830 | }; | |
8f70e95f BS |
2831 | struct rpc_auth *auth; |
2832 | int ret; | |
2833 | ||
c2190661 | 2834 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2835 | if (IS_ERR(auth)) { |
75bc8821 | 2836 | ret = -EACCES; |
8f70e95f BS |
2837 | goto out; |
2838 | } | |
2839 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2840 | out: |
2841 | return ret; | |
2842 | } | |
2843 | ||
9a744ba3 CL |
2844 | /* |
2845 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2846 | * | |
2847 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2848 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2849 | * | |
2850 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2851 | * negative errno value. | |
2852 | */ | |
801a16dc | 2853 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2854 | struct nfs_fsinfo *info) |
1da177e4 | 2855 | { |
9a744ba3 CL |
2856 | /* Per 3530bis 15.33.5 */ |
2857 | static const rpc_authflavor_t flav_array[] = { | |
2858 | RPC_AUTH_GSS_KRB5P, | |
2859 | RPC_AUTH_GSS_KRB5I, | |
2860 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2861 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2862 | RPC_AUTH_NULL, |
2863 | }; | |
2864 | int status = -EPERM; | |
2865 | size_t i; | |
6a1a1e34 | 2866 | |
9a744ba3 | 2867 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2868 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2869 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2870 | continue; |
2871 | break; | |
8f70e95f | 2872 | } |
9a744ba3 | 2873 | |
fb8a5ba8 BS |
2874 | /* |
2875 | * -EACCESS could mean that the user doesn't have correct permissions | |
2876 | * to access the mount. It could also mean that we tried to mount | |
2877 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2878 | * existing mount programs don't handle -EACCES very well so it should | |
2879 | * be mapped to -EPERM instead. | |
2880 | */ | |
2881 | if (status == -EACCES) | |
2882 | status = -EPERM; | |
801a16dc BS |
2883 | return status; |
2884 | } | |
2885 | ||
2ed4b95b CL |
2886 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2887 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2888 | { | |
2889 | int mv = server->nfs_client->cl_minorversion; | |
2890 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2891 | } | |
2892 | ||
2893 | /** | |
2894 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2895 | * @server: initialized nfs_server handle | |
2896 | * @fhandle: we fill in the pseudo-fs root file handle | |
2897 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 2898 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
2899 | * |
2900 | * Returns zero on success, or a negative errno. | |
801a16dc | 2901 | */ |
3028eb2b | 2902 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
2903 | struct nfs_fsinfo *info, |
2904 | bool auth_probe) | |
801a16dc | 2905 | { |
2ed4b95b CL |
2906 | int status; |
2907 | ||
5e6b1990 TM |
2908 | switch (auth_probe) { |
2909 | case false: | |
2910 | status = nfs4_lookup_root(server, fhandle, info); | |
2911 | if (status != -NFS4ERR_WRONGSEC) | |
2912 | break; | |
2913 | /* Did user force a 'sec=' mount option? */ | |
2914 | if (server->flags & NFS_MOUNT_SECFLAVOUR) | |
2915 | break; | |
2916 | default: | |
2ed4b95b | 2917 | status = nfs4_do_find_root_sec(server, fhandle, info); |
5e6b1990 | 2918 | } |
2ed4b95b | 2919 | |
1da177e4 LT |
2920 | if (status == 0) |
2921 | status = nfs4_server_capabilities(server, fhandle); | |
2922 | if (status == 0) | |
2923 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2924 | |
c12e87f4 | 2925 | return nfs4_map_errors(status); |
1da177e4 LT |
2926 | } |
2927 | ||
bae36241 BS |
2928 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2929 | struct nfs_fsinfo *info) | |
2930 | { | |
2931 | int error; | |
2932 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2933 | struct nfs4_label *label = NULL; |
bae36241 BS |
2934 | |
2935 | error = nfs4_server_capabilities(server, mntfh); | |
2936 | if (error < 0) { | |
2937 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2938 | return error; | |
2939 | } | |
2940 | ||
14c43f76 DQ |
2941 | label = nfs4_label_alloc(server, GFP_KERNEL); |
2942 | if (IS_ERR(label)) | |
2943 | return PTR_ERR(label); | |
2944 | ||
1775fd3e | 2945 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2946 | if (error < 0) { |
2947 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 2948 | goto err_free_label; |
bae36241 BS |
2949 | } |
2950 | ||
2951 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2952 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2953 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2954 | ||
14c43f76 DQ |
2955 | err_free_label: |
2956 | nfs4_label_free(label); | |
2957 | ||
bae36241 BS |
2958 | return error; |
2959 | } | |
2960 | ||
6b97fd3d MN |
2961 | /* |
2962 | * Get locations and (maybe) other attributes of a referral. | |
2963 | * Note that we'll actually follow the referral later when | |
2964 | * we detect fsid mismatch in inode revalidation | |
2965 | */ | |
f05d147f BS |
2966 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2967 | const struct qstr *name, struct nfs_fattr *fattr, | |
2968 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2969 | { |
2970 | int status = -ENOMEM; | |
2971 | struct page *page = NULL; | |
2972 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2973 | |
2974 | page = alloc_page(GFP_KERNEL); | |
2975 | if (page == NULL) | |
2976 | goto out; | |
2977 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2978 | if (locations == NULL) | |
2979 | goto out; | |
2980 | ||
f05d147f | 2981 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2982 | if (status != 0) |
2983 | goto out; | |
2984 | /* Make sure server returned a different fsid for the referral */ | |
2985 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2986 | dprintk("%s: server did not return a different fsid for" |
2987 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2988 | status = -EIO; |
2989 | goto out; | |
2990 | } | |
533eb461 AA |
2991 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2992 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2993 | |
533eb461 | 2994 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2995 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2996 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2997 | out: | |
2998 | if (page) | |
2999 | __free_page(page); | |
5d7ca35a | 3000 | kfree(locations); |
6b97fd3d MN |
3001 | return status; |
3002 | } | |
3003 | ||
1775fd3e DQ |
3004 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3005 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3006 | { |
3007 | struct nfs4_getattr_arg args = { | |
3008 | .fh = fhandle, | |
3009 | .bitmask = server->attr_bitmask, | |
3010 | }; | |
3011 | struct nfs4_getattr_res res = { | |
3012 | .fattr = fattr, | |
1775fd3e | 3013 | .label = label, |
1da177e4 LT |
3014 | .server = server, |
3015 | }; | |
3016 | struct rpc_message msg = { | |
3017 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3018 | .rpc_argp = &args, | |
3019 | .rpc_resp = &res, | |
3020 | }; | |
aa9c2669 DQ |
3021 | |
3022 | args.bitmask = nfs4_bitmask(server, label); | |
3023 | ||
0e574af1 | 3024 | nfs_fattr_init(fattr); |
7c513058 | 3025 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3026 | } |
3027 | ||
1775fd3e DQ |
3028 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3029 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3030 | { |
3031 | struct nfs4_exception exception = { }; | |
3032 | int err; | |
3033 | do { | |
b5f875a9 TM |
3034 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3035 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3036 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3037 | &exception); |
3038 | } while (exception.retry); | |
3039 | return err; | |
3040 | } | |
3041 | ||
3042 | /* | |
3043 | * The file is not closed if it is opened due to the a request to change | |
3044 | * the size of the file. The open call will not be needed once the | |
3045 | * VFS layer lookup-intents are implemented. | |
3046 | * | |
3047 | * Close is called when the inode is destroyed. | |
3048 | * If we haven't opened the file for O_WRONLY, we | |
3049 | * need to in the size_change case to obtain a stateid. | |
3050 | * | |
3051 | * Got race? | |
3052 | * Because OPEN is always done by name in nfsv4, it is | |
3053 | * possible that we opened a different file by the same | |
3054 | * name. We can recognize this race condition, but we | |
3055 | * can't do anything about it besides returning an error. | |
3056 | * | |
3057 | * This will be fixed with VFS changes (lookup-intent). | |
3058 | */ | |
3059 | static int | |
3060 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3061 | struct iattr *sattr) | |
3062 | { | |
08e9eac4 | 3063 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3064 | struct rpc_cred *cred = NULL; |
d530838b | 3065 | struct nfs4_state *state = NULL; |
14c43f76 | 3066 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3067 | int status; |
3068 | ||
8a1636c4 | 3069 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 3070 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3071 | |
0e574af1 | 3072 | nfs_fattr_init(fattr); |
1da177e4 | 3073 | |
2669940d AA |
3074 | /* Deal with open(O_TRUNC) */ |
3075 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3076 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3077 | |
3078 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3079 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3080 | return 0; |
3081 | ||
d530838b | 3082 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3083 | if (sattr->ia_valid & ATTR_FILE) { |
3084 | struct nfs_open_context *ctx; | |
3085 | ||
3086 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3087 | if (ctx) { |
3088 | cred = ctx->cred; | |
3089 | state = ctx->state; | |
3090 | } | |
659bfcd6 | 3091 | } |
08e9eac4 | 3092 | |
14c43f76 DQ |
3093 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3094 | if (IS_ERR(label)) | |
3095 | return PTR_ERR(label); | |
3096 | ||
3097 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3098 | if (status == 0) { |
65e4308d | 3099 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3100 | nfs_setsecurity(inode, fattr, label); |
3101 | } | |
14c43f76 | 3102 | nfs4_label_free(label); |
1da177e4 LT |
3103 | return status; |
3104 | } | |
3105 | ||
0c2e53f1 TM |
3106 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3107 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3108 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3109 | { |
0c2e53f1 | 3110 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3111 | int status; |
3112 | struct nfs4_lookup_arg args = { | |
3113 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3114 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3115 | .name = name, |
3116 | }; | |
3117 | struct nfs4_lookup_res res = { | |
3118 | .server = server, | |
3119 | .fattr = fattr, | |
aa9c2669 | 3120 | .label = label, |
2b3de441 DH |
3121 | .fh = fhandle, |
3122 | }; | |
3123 | struct rpc_message msg = { | |
3124 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3125 | .rpc_argp = &args, | |
3126 | .rpc_resp = &res, | |
3127 | }; | |
3128 | ||
aa9c2669 DQ |
3129 | args.bitmask = nfs4_bitmask(server, label); |
3130 | ||
2b3de441 DH |
3131 | nfs_fattr_init(fattr); |
3132 | ||
1da177e4 | 3133 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3134 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3135 | dprintk("NFS reply lookup: %d\n", status); |
3136 | return status; | |
3137 | } | |
3138 | ||
72de53ec | 3139 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3140 | { |
7ebb9315 | 3141 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3142 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3143 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3144 | fattr->nlink = 2; | |
3145 | } | |
3146 | ||
72de53ec BS |
3147 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3148 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3149 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3150 | { |
3151 | struct nfs4_exception exception = { }; | |
72de53ec | 3152 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3153 | int err; |
3154 | do { | |
1775fd3e | 3155 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3156 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3157 | switch (err) { |
08ef7bd3 | 3158 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3159 | err = -ENOENT; |
3160 | goto out; | |
0c2e53f1 | 3161 | case -NFS4ERR_MOVED: |
f05d147f | 3162 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3163 | goto out; |
0c2e53f1 | 3164 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3165 | err = -EPERM; |
3166 | if (client != *clnt) | |
3167 | goto out; | |
41d058c3 TM |
3168 | /* No security negotiation if the user specified 'sec=' */ |
3169 | if (NFS_SERVER(dir)->flags & NFS_MOUNT_SECFLAVOUR) | |
3170 | goto out; | |
72de53ec BS |
3171 | client = nfs4_create_sec_client(client, dir, name); |
3172 | if (IS_ERR(client)) | |
3173 | return PTR_ERR(client); | |
3174 | ||
3175 | exception.retry = 1; | |
3176 | break; | |
3177 | default: | |
3178 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3179 | } |
1da177e4 | 3180 | } while (exception.retry); |
72de53ec BS |
3181 | |
3182 | out: | |
3183 | if (err == 0) | |
3184 | *clnt = client; | |
3185 | else if (client != *clnt) | |
3186 | rpc_shutdown_client(client); | |
3187 | ||
1da177e4 LT |
3188 | return err; |
3189 | } | |
3190 | ||
80a16b21 | 3191 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3192 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3193 | struct nfs4_label *label) | |
72de53ec BS |
3194 | { |
3195 | int status; | |
3196 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3197 | ||
1775fd3e | 3198 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3199 | if (client != NFS_CLIENT(dir)) { |
3200 | rpc_shutdown_client(client); | |
3201 | nfs_fixup_secinfo_attributes(fattr); | |
3202 | } | |
3203 | return status; | |
3204 | } | |
3205 | ||
f05d147f BS |
3206 | struct rpc_clnt * |
3207 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3208 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3209 | { | |
b72888cb | 3210 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3211 | int status; |
f05d147f | 3212 | |
1775fd3e | 3213 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3214 | if (status < 0) |
f05d147f | 3215 | return ERR_PTR(status); |
b72888cb | 3216 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3217 | } |
3218 | ||
1da177e4 LT |
3219 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3220 | { | |
76b32999 | 3221 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3222 | struct nfs4_accessargs args = { |
3223 | .fh = NFS_FH(inode), | |
a4980e78 | 3224 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3225 | }; |
3226 | struct nfs4_accessres res = { | |
3227 | .server = server, | |
1da177e4 | 3228 | }; |
1da177e4 LT |
3229 | struct rpc_message msg = { |
3230 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3231 | .rpc_argp = &args, | |
3232 | .rpc_resp = &res, | |
3233 | .rpc_cred = entry->cred, | |
3234 | }; | |
3235 | int mode = entry->mask; | |
aa9c2669 | 3236 | int status = 0; |
1da177e4 LT |
3237 | |
3238 | /* | |
3239 | * Determine which access bits we want to ask for... | |
3240 | */ | |
3241 | if (mode & MAY_READ) | |
3242 | args.access |= NFS4_ACCESS_READ; | |
3243 | if (S_ISDIR(inode->i_mode)) { | |
3244 | if (mode & MAY_WRITE) | |
3245 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3246 | if (mode & MAY_EXEC) | |
3247 | args.access |= NFS4_ACCESS_LOOKUP; | |
3248 | } else { | |
3249 | if (mode & MAY_WRITE) | |
3250 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3251 | if (mode & MAY_EXEC) | |
3252 | args.access |= NFS4_ACCESS_EXECUTE; | |
3253 | } | |
c407d41a TM |
3254 | |
3255 | res.fattr = nfs_alloc_fattr(); | |
3256 | if (res.fattr == NULL) | |
3257 | return -ENOMEM; | |
3258 | ||
7c513058 | 3259 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3260 | if (!status) { |
6168f62c | 3261 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3262 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3263 | } |
c407d41a | 3264 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3265 | return status; |
3266 | } | |
3267 | ||
3268 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3269 | { | |
3270 | struct nfs4_exception exception = { }; | |
3271 | int err; | |
3272 | do { | |
c1578b76 TM |
3273 | err = _nfs4_proc_access(inode, entry); |
3274 | trace_nfs4_access(inode, err); | |
3275 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3276 | &exception); |
3277 | } while (exception.retry); | |
3278 | return err; | |
3279 | } | |
3280 | ||
3281 | /* | |
3282 | * TODO: For the time being, we don't try to get any attributes | |
3283 | * along with any of the zero-copy operations READ, READDIR, | |
3284 | * READLINK, WRITE. | |
3285 | * | |
3286 | * In the case of the first three, we want to put the GETATTR | |
3287 | * after the read-type operation -- this is because it is hard | |
3288 | * to predict the length of a GETATTR response in v4, and thus | |
3289 | * align the READ data correctly. This means that the GETATTR | |
3290 | * may end up partially falling into the page cache, and we should | |
3291 | * shift it into the 'tail' of the xdr_buf before processing. | |
3292 | * To do this efficiently, we need to know the total length | |
3293 | * of data received, which doesn't seem to be available outside | |
3294 | * of the RPC layer. | |
3295 | * | |
3296 | * In the case of WRITE, we also want to put the GETATTR after | |
3297 | * the operation -- in this case because we want to make sure | |
140150db | 3298 | * we get the post-operation mtime and size. |
1da177e4 LT |
3299 | * |
3300 | * Both of these changes to the XDR layer would in fact be quite | |
3301 | * minor, but I decided to leave them for a subsequent patch. | |
3302 | */ | |
3303 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3304 | unsigned int pgbase, unsigned int pglen) | |
3305 | { | |
3306 | struct nfs4_readlink args = { | |
3307 | .fh = NFS_FH(inode), | |
3308 | .pgbase = pgbase, | |
3309 | .pglen = pglen, | |
3310 | .pages = &page, | |
3311 | }; | |
f50c7000 | 3312 | struct nfs4_readlink_res res; |
1da177e4 LT |
3313 | struct rpc_message msg = { |
3314 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3315 | .rpc_argp = &args, | |
f50c7000 | 3316 | .rpc_resp = &res, |
1da177e4 LT |
3317 | }; |
3318 | ||
7c513058 | 3319 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3320 | } |
3321 | ||
3322 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3323 | unsigned int pgbase, unsigned int pglen) | |
3324 | { | |
3325 | struct nfs4_exception exception = { }; | |
3326 | int err; | |
3327 | do { | |
c1578b76 TM |
3328 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3329 | trace_nfs4_readlink(inode, err); | |
3330 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3331 | &exception); |
3332 | } while (exception.retry); | |
3333 | return err; | |
3334 | } | |
3335 | ||
1da177e4 | 3336 | /* |
8867fe58 | 3337 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3338 | */ |
1da177e4 LT |
3339 | static int |
3340 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3341 | int flags) |
1da177e4 | 3342 | { |
aa9c2669 | 3343 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3344 | struct nfs_open_context *ctx; |
1da177e4 | 3345 | struct nfs4_state *state; |
5bc2afc2 | 3346 | int opened = 0; |
1da177e4 LT |
3347 | int status = 0; |
3348 | ||
8867fe58 MS |
3349 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3350 | if (IS_ERR(ctx)) | |
3351 | return PTR_ERR(ctx); | |
3352 | ||
aa9c2669 DQ |
3353 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3354 | ||
a8a5da99 | 3355 | sattr->ia_mode &= ~current_umask(); |
5bc2afc2 | 3356 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); |
1da177e4 LT |
3357 | if (IS_ERR(state)) { |
3358 | status = PTR_ERR(state); | |
c0204fd2 | 3359 | goto out; |
1da177e4 | 3360 | } |
1da177e4 | 3361 | out: |
aa9c2669 | 3362 | nfs4_label_release_security(ilabel); |
8867fe58 | 3363 | put_nfs_open_context(ctx); |
1da177e4 LT |
3364 | return status; |
3365 | } | |
3366 | ||
3367 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3368 | { | |
16e42959 | 3369 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3370 | struct nfs_removeargs args = { |
1da177e4 | 3371 | .fh = NFS_FH(dir), |
26fe5750 | 3372 | .name = *name, |
16e42959 | 3373 | }; |
4fdc17b2 | 3374 | struct nfs_removeres res = { |
16e42959 | 3375 | .server = server, |
1da177e4 | 3376 | }; |
1da177e4 | 3377 | struct rpc_message msg = { |
4fdc17b2 TM |
3378 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3379 | .rpc_argp = &args, | |
3380 | .rpc_resp = &res, | |
1da177e4 | 3381 | }; |
778d2817 | 3382 | int status; |
1da177e4 | 3383 | |
7c513058 | 3384 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3385 | if (status == 0) |
16e42959 | 3386 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3387 | return status; |
3388 | } | |
3389 | ||
3390 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3391 | { | |
3392 | struct nfs4_exception exception = { }; | |
3393 | int err; | |
3394 | do { | |
078ea3df TM |
3395 | err = _nfs4_proc_remove(dir, name); |
3396 | trace_nfs4_remove(dir, name, err); | |
3397 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3398 | &exception); |
3399 | } while (exception.retry); | |
3400 | return err; | |
3401 | } | |
3402 | ||
e4eff1a6 | 3403 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3404 | { |
e4eff1a6 TM |
3405 | struct nfs_server *server = NFS_SERVER(dir); |
3406 | struct nfs_removeargs *args = msg->rpc_argp; | |
3407 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3408 | |
e4eff1a6 | 3409 | res->server = server; |
1da177e4 | 3410 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3411 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3412 | |
3413 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3414 | } |
3415 | ||
34e137cc BS |
3416 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3417 | { | |
d9afbd1b TM |
3418 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3419 | &data->args.seq_args, | |
3420 | &data->res.seq_res, | |
3421 | task); | |
1da177e4 LT |
3422 | } |
3423 | ||
e4eff1a6 | 3424 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3425 | { |
078ea3df TM |
3426 | struct nfs_unlinkdata *data = task->tk_calldata; |
3427 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3428 | |
14516c3a TM |
3429 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3430 | return 0; | |
9e33bed5 | 3431 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3432 | return 0; |
3433 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3434 | return 1; |
1da177e4 LT |
3435 | } |
3436 | ||
d3d4152a JL |
3437 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3438 | { | |
3439 | struct nfs_server *server = NFS_SERVER(dir); | |
3440 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3441 | struct nfs_renameres *res = msg->rpc_resp; | |
3442 | ||
3443 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3444 | res->server = server; |
a9c92d6b | 3445 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3446 | } |
3447 | ||
c6bfa1a1 BS |
3448 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3449 | { | |
d9afbd1b TM |
3450 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3451 | &data->args.seq_args, | |
3452 | &data->res.seq_res, | |
3453 | task); | |
d3d4152a JL |
3454 | } |
3455 | ||
3456 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3457 | struct inode *new_dir) | |
3458 | { | |
fbc6f7c2 TM |
3459 | struct nfs_renamedata *data = task->tk_calldata; |
3460 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3461 | |
3462 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3463 | return 0; | |
3464 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3465 | return 0; | |
3466 | ||
3467 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3468 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3469 | return 1; |
3470 | } | |
3471 | ||
1da177e4 LT |
3472 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3473 | struct inode *new_dir, struct qstr *new_name) | |
3474 | { | |
6caf2c82 | 3475 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3476 | struct nfs_renameargs arg = { |
1da177e4 LT |
3477 | .old_dir = NFS_FH(old_dir), |
3478 | .new_dir = NFS_FH(new_dir), | |
3479 | .old_name = old_name, | |
3480 | .new_name = new_name, | |
6caf2c82 | 3481 | }; |
e8582a8b | 3482 | struct nfs_renameres res = { |
6caf2c82 | 3483 | .server = server, |
1da177e4 | 3484 | }; |
1da177e4 LT |
3485 | struct rpc_message msg = { |
3486 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3487 | .rpc_argp = &arg, | |
3488 | .rpc_resp = &res, | |
3489 | }; | |
011fff72 | 3490 | int status = -ENOMEM; |
14c43f76 | 3491 | |
7c513058 | 3492 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3493 | if (!status) { |
3494 | update_changeattr(old_dir, &res.old_cinfo); | |
3495 | update_changeattr(new_dir, &res.new_cinfo); | |
3496 | } | |
3497 | return status; | |
3498 | } | |
3499 | ||
3500 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3501 | struct inode *new_dir, struct qstr *new_name) | |
3502 | { | |
3503 | struct nfs4_exception exception = { }; | |
3504 | int err; | |
3505 | do { | |
fbc6f7c2 TM |
3506 | err = _nfs4_proc_rename(old_dir, old_name, |
3507 | new_dir, new_name); | |
3508 | trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err); | |
3509 | err = nfs4_handle_exception(NFS_SERVER(old_dir), err, | |
1da177e4 LT |
3510 | &exception); |
3511 | } while (exception.retry); | |
3512 | return err; | |
3513 | } | |
3514 | ||
3515 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3516 | { | |
91ba2eee | 3517 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3518 | struct nfs4_link_arg arg = { |
3519 | .fh = NFS_FH(inode), | |
3520 | .dir_fh = NFS_FH(dir), | |
3521 | .name = name, | |
91ba2eee TM |
3522 | .bitmask = server->attr_bitmask, |
3523 | }; | |
91ba2eee TM |
3524 | struct nfs4_link_res res = { |
3525 | .server = server, | |
1775fd3e | 3526 | .label = NULL, |
1da177e4 | 3527 | }; |
1da177e4 LT |
3528 | struct rpc_message msg = { |
3529 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3530 | .rpc_argp = &arg, | |
91ba2eee | 3531 | .rpc_resp = &res, |
1da177e4 | 3532 | }; |
136f2627 TM |
3533 | int status = -ENOMEM; |
3534 | ||
3535 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3536 | if (res.fattr == NULL) |
136f2627 | 3537 | goto out; |
1da177e4 | 3538 | |
14c43f76 DQ |
3539 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3540 | if (IS_ERR(res.label)) { | |
3541 | status = PTR_ERR(res.label); | |
3542 | goto out; | |
3543 | } | |
aa9c2669 | 3544 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3545 | |
7c513058 | 3546 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3547 | if (!status) { |
3548 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3549 | status = nfs_post_op_update_inode(inode, res.fattr); |
3550 | if (!status) | |
3551 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3552 | } |
14c43f76 DQ |
3553 | |
3554 | ||
3555 | nfs4_label_free(res.label); | |
3556 | ||
136f2627 | 3557 | out: |
136f2627 | 3558 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3559 | return status; |
3560 | } | |
3561 | ||
3562 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3563 | { | |
3564 | struct nfs4_exception exception = { }; | |
3565 | int err; | |
3566 | do { | |
3567 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3568 | _nfs4_proc_link(inode, dir, name), | |
3569 | &exception); | |
3570 | } while (exception.retry); | |
3571 | return err; | |
3572 | } | |
3573 | ||
57dc9a57 TM |
3574 | struct nfs4_createdata { |
3575 | struct rpc_message msg; | |
3576 | struct nfs4_create_arg arg; | |
3577 | struct nfs4_create_res res; | |
3578 | struct nfs_fh fh; | |
3579 | struct nfs_fattr fattr; | |
1775fd3e | 3580 | struct nfs4_label *label; |
57dc9a57 TM |
3581 | }; |
3582 | ||
3583 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3584 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3585 | { | |
3586 | struct nfs4_createdata *data; | |
3587 | ||
3588 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3589 | if (data != NULL) { | |
3590 | struct nfs_server *server = NFS_SERVER(dir); | |
3591 | ||
14c43f76 DQ |
3592 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3593 | if (IS_ERR(data->label)) | |
3594 | goto out_free; | |
3595 | ||
57dc9a57 TM |
3596 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3597 | data->msg.rpc_argp = &data->arg; | |
3598 | data->msg.rpc_resp = &data->res; | |
3599 | data->arg.dir_fh = NFS_FH(dir); | |
3600 | data->arg.server = server; | |
3601 | data->arg.name = name; | |
3602 | data->arg.attrs = sattr; | |
3603 | data->arg.ftype = ftype; | |
aa9c2669 | 3604 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3605 | data->res.server = server; |
3606 | data->res.fh = &data->fh; | |
3607 | data->res.fattr = &data->fattr; | |
1775fd3e | 3608 | data->res.label = data->label; |
57dc9a57 | 3609 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3610 | } |
3611 | return data; | |
14c43f76 DQ |
3612 | out_free: |
3613 | kfree(data); | |
3614 | return NULL; | |
57dc9a57 TM |
3615 | } |
3616 | ||
3617 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3618 | { | |
7c513058 | 3619 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3620 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3621 | if (status == 0) { |
3622 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3623 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3624 | } |
3625 | return status; | |
3626 | } | |
3627 | ||
3628 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3629 | { | |
14c43f76 | 3630 | nfs4_label_free(data->label); |
57dc9a57 TM |
3631 | kfree(data); |
3632 | } | |
3633 | ||
4f390c15 | 3634 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3635 | struct page *page, unsigned int len, struct iattr *sattr, |
3636 | struct nfs4_label *label) | |
1da177e4 | 3637 | { |
57dc9a57 TM |
3638 | struct nfs4_createdata *data; |
3639 | int status = -ENAMETOOLONG; | |
1da177e4 | 3640 | |
94a6d753 | 3641 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3642 | goto out; |
4f390c15 | 3643 | |
57dc9a57 TM |
3644 | status = -ENOMEM; |
3645 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3646 | if (data == NULL) | |
3647 | goto out; | |
3648 | ||
3649 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3650 | data->arg.u.symlink.pages = &page; | |
3651 | data->arg.u.symlink.len = len; | |
1775fd3e | 3652 | data->arg.label = label; |
1da177e4 | 3653 | |
57dc9a57 TM |
3654 | status = nfs4_do_create(dir, dentry, data); |
3655 | ||
3656 | nfs4_free_createdata(data); | |
3657 | out: | |
1da177e4 LT |
3658 | return status; |
3659 | } | |
3660 | ||
4f390c15 | 3661 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3662 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3663 | { |
3664 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3665 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3666 | int err; |
aa9c2669 DQ |
3667 | |
3668 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3669 | ||
1da177e4 | 3670 | do { |
078ea3df TM |
3671 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3672 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3673 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3674 | &exception); |
3675 | } while (exception.retry); | |
aa9c2669 DQ |
3676 | |
3677 | nfs4_label_release_security(label); | |
1da177e4 LT |
3678 | return err; |
3679 | } | |
3680 | ||
3681 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3682 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3683 | { |
57dc9a57 TM |
3684 | struct nfs4_createdata *data; |
3685 | int status = -ENOMEM; | |
1da177e4 | 3686 | |
57dc9a57 TM |
3687 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3688 | if (data == NULL) | |
3689 | goto out; | |
3690 | ||
1775fd3e | 3691 | data->arg.label = label; |
57dc9a57 TM |
3692 | status = nfs4_do_create(dir, dentry, data); |
3693 | ||
3694 | nfs4_free_createdata(data); | |
3695 | out: | |
1da177e4 LT |
3696 | return status; |
3697 | } | |
3698 | ||
3699 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3700 | struct iattr *sattr) | |
3701 | { | |
3702 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3703 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3704 | int err; |
a8a5da99 | 3705 | |
aa9c2669 DQ |
3706 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3707 | ||
a8a5da99 | 3708 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3709 | do { |
078ea3df TM |
3710 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3711 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3712 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3713 | &exception); |
3714 | } while (exception.retry); | |
aa9c2669 DQ |
3715 | nfs4_label_release_security(label); |
3716 | ||
1da177e4 LT |
3717 | return err; |
3718 | } | |
3719 | ||
3720 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3721 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3722 | { |
3723 | struct inode *dir = dentry->d_inode; | |
3724 | struct nfs4_readdir_arg args = { | |
3725 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3726 | .pages = pages, |
1da177e4 LT |
3727 | .pgbase = 0, |
3728 | .count = count, | |
96d25e53 | 3729 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3730 | .plus = plus, |
1da177e4 LT |
3731 | }; |
3732 | struct nfs4_readdir_res res; | |
3733 | struct rpc_message msg = { | |
3734 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3735 | .rpc_argp = &args, | |
3736 | .rpc_resp = &res, | |
3737 | .rpc_cred = cred, | |
3738 | }; | |
3739 | int status; | |
3740 | ||
3110ff80 | 3741 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3742 | dentry->d_parent->d_name.name, |
3743 | dentry->d_name.name, | |
3744 | (unsigned long long)cookie); | |
c3f52af3 | 3745 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3746 | res.pgbase = args.pgbase; |
7c513058 | 3747 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3748 | if (status >= 0) { |
c3f52af3 | 3749 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3750 | status += args.pgbase; |
3751 | } | |
c4812998 TM |
3752 | |
3753 | nfs_invalidate_atime(dir); | |
3754 | ||
3110ff80 | 3755 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3756 | return status; |
3757 | } | |
3758 | ||
3759 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3760 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3761 | { |
3762 | struct nfs4_exception exception = { }; | |
3763 | int err; | |
3764 | do { | |
c1578b76 TM |
3765 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3766 | pages, count, plus); | |
3767 | trace_nfs4_readdir(dentry->d_inode, err); | |
3768 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3769 | &exception); |
3770 | } while (exception.retry); | |
3771 | return err; | |
3772 | } | |
3773 | ||
3774 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3775 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3776 | { |
57dc9a57 TM |
3777 | struct nfs4_createdata *data; |
3778 | int mode = sattr->ia_mode; | |
3779 | int status = -ENOMEM; | |
1da177e4 | 3780 | |
57dc9a57 TM |
3781 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3782 | if (data == NULL) | |
3783 | goto out; | |
3784 | ||
1da177e4 | 3785 | if (S_ISFIFO(mode)) |
57dc9a57 | 3786 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3787 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3788 | data->arg.ftype = NF4BLK; |
3789 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3790 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3791 | } |
3792 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3793 | data->arg.ftype = NF4CHR; |
3794 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3795 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3796 | } else if (!S_ISSOCK(mode)) { |
3797 | status = -EINVAL; | |
3798 | goto out_free; | |
1da177e4 | 3799 | } |
1775fd3e | 3800 | |
aa9c2669 | 3801 | data->arg.label = label; |
57dc9a57 | 3802 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3803 | out_free: |
57dc9a57 TM |
3804 | nfs4_free_createdata(data); |
3805 | out: | |
1da177e4 LT |
3806 | return status; |
3807 | } | |
3808 | ||
3809 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3810 | struct iattr *sattr, dev_t rdev) | |
3811 | { | |
3812 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3813 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3814 | int err; |
a8a5da99 | 3815 | |
aa9c2669 DQ |
3816 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3817 | ||
a8a5da99 | 3818 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3819 | do { |
078ea3df TM |
3820 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3821 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3822 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3823 | &exception); |
3824 | } while (exception.retry); | |
aa9c2669 DQ |
3825 | |
3826 | nfs4_label_release_security(label); | |
3827 | ||
1da177e4 LT |
3828 | return err; |
3829 | } | |
3830 | ||
3831 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3832 | struct nfs_fsstat *fsstat) | |
3833 | { | |
3834 | struct nfs4_statfs_arg args = { | |
3835 | .fh = fhandle, | |
3836 | .bitmask = server->attr_bitmask, | |
3837 | }; | |
24ad148a BH |
3838 | struct nfs4_statfs_res res = { |
3839 | .fsstat = fsstat, | |
3840 | }; | |
1da177e4 LT |
3841 | struct rpc_message msg = { |
3842 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3843 | .rpc_argp = &args, | |
24ad148a | 3844 | .rpc_resp = &res, |
1da177e4 LT |
3845 | }; |
3846 | ||
0e574af1 | 3847 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3848 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3849 | } |
3850 | ||
3851 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3852 | { | |
3853 | struct nfs4_exception exception = { }; | |
3854 | int err; | |
3855 | do { | |
3856 | err = nfs4_handle_exception(server, | |
3857 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3858 | &exception); | |
3859 | } while (exception.retry); | |
3860 | return err; | |
3861 | } | |
3862 | ||
3863 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3864 | struct nfs_fsinfo *fsinfo) | |
3865 | { | |
3866 | struct nfs4_fsinfo_arg args = { | |
3867 | .fh = fhandle, | |
3868 | .bitmask = server->attr_bitmask, | |
3869 | }; | |
3dda5e43 BH |
3870 | struct nfs4_fsinfo_res res = { |
3871 | .fsinfo = fsinfo, | |
3872 | }; | |
1da177e4 LT |
3873 | struct rpc_message msg = { |
3874 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3875 | .rpc_argp = &args, | |
3dda5e43 | 3876 | .rpc_resp = &res, |
1da177e4 LT |
3877 | }; |
3878 | ||
7c513058 | 3879 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3880 | } |
3881 | ||
3882 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3883 | { | |
3884 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3885 | unsigned long now = jiffies; |
1da177e4 LT |
3886 | int err; |
3887 | ||
3888 | do { | |
83ca7f5a | 3889 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 3890 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
3891 | if (err == 0) { |
3892 | struct nfs_client *clp = server->nfs_client; | |
3893 | ||
3894 | spin_lock(&clp->cl_lock); | |
3895 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3896 | clp->cl_last_renewal = now; | |
3897 | spin_unlock(&clp->cl_lock); | |
3898 | break; | |
3899 | } | |
3900 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3901 | } while (exception.retry); |
3902 | return err; | |
3903 | } | |
3904 | ||
3905 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3906 | { | |
e38eb650 BS |
3907 | int error; |
3908 | ||
0e574af1 | 3909 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3910 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3911 | if (error == 0) { |
3912 | /* block layout checks this! */ | |
3913 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3914 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3915 | } |
e38eb650 BS |
3916 | |
3917 | return error; | |
1da177e4 LT |
3918 | } |
3919 | ||
3920 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3921 | struct nfs_pathconf *pathconf) | |
3922 | { | |
3923 | struct nfs4_pathconf_arg args = { | |
3924 | .fh = fhandle, | |
3925 | .bitmask = server->attr_bitmask, | |
3926 | }; | |
d45b2989 BH |
3927 | struct nfs4_pathconf_res res = { |
3928 | .pathconf = pathconf, | |
3929 | }; | |
1da177e4 LT |
3930 | struct rpc_message msg = { |
3931 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3932 | .rpc_argp = &args, | |
d45b2989 | 3933 | .rpc_resp = &res, |
1da177e4 LT |
3934 | }; |
3935 | ||
3936 | /* None of the pathconf attributes are mandatory to implement */ | |
3937 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3938 | memset(pathconf, 0, sizeof(*pathconf)); | |
3939 | return 0; | |
3940 | } | |
3941 | ||
0e574af1 | 3942 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3943 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3944 | } |
3945 | ||
3946 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3947 | struct nfs_pathconf *pathconf) | |
3948 | { | |
3949 | struct nfs4_exception exception = { }; | |
3950 | int err; | |
3951 | ||
3952 | do { | |
3953 | err = nfs4_handle_exception(server, | |
3954 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3955 | &exception); | |
3956 | } while (exception.retry); | |
3957 | return err; | |
3958 | } | |
3959 | ||
5521abfd | 3960 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3961 | const struct nfs_open_context *ctx, |
3962 | const struct nfs_lock_context *l_ctx, | |
3963 | fmode_t fmode) | |
3964 | { | |
3965 | const struct nfs_lockowner *lockowner = NULL; | |
3966 | ||
3967 | if (l_ctx != NULL) | |
3968 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3969 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3970 | } |
3971 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3972 | ||
5521abfd TM |
3973 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3974 | const struct nfs_open_context *ctx, | |
3975 | const struct nfs_lock_context *l_ctx, | |
3976 | fmode_t fmode) | |
3977 | { | |
3978 | nfs4_stateid current_stateid; | |
3979 | ||
3980 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3981 | return false; | |
3982 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3983 | } | |
3984 | ||
3985 | static bool nfs4_error_stateid_expired(int err) | |
3986 | { | |
3987 | switch (err) { | |
3988 | case -NFS4ERR_DELEG_REVOKED: | |
3989 | case -NFS4ERR_ADMIN_REVOKED: | |
3990 | case -NFS4ERR_BAD_STATEID: | |
3991 | case -NFS4ERR_STALE_STATEID: | |
3992 | case -NFS4ERR_OLD_STATEID: | |
3993 | case -NFS4ERR_OPENMODE: | |
3994 | case -NFS4ERR_EXPIRED: | |
3995 | return true; | |
3996 | } | |
3997 | return false; | |
3998 | } | |
3999 | ||
d20581aa BH |
4000 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
4001 | { | |
cd841605 | 4002 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
4003 | } |
4004 | ||
cbdabc7f | 4005 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 4006 | { |
cd841605 | 4007 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 4008 | |
cc668ab3 | 4009 | trace_nfs4_read(data, task->tk_status); |
9e33bed5 | 4010 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4011 | rpc_restart_call_prepare(task); |
ec06c096 | 4012 | return -EAGAIN; |
1da177e4 | 4013 | } |
8850df99 | 4014 | |
d20581aa | 4015 | __nfs4_read_done_cb(data); |
1da177e4 | 4016 | if (task->tk_status > 0) |
ec06c096 TM |
4017 | renew_lease(server, data->timestamp); |
4018 | return 0; | |
1da177e4 LT |
4019 | } |
4020 | ||
5521abfd TM |
4021 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
4022 | struct nfs_readargs *args) | |
4023 | { | |
4024 | ||
4025 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4026 | nfs4_stateid_is_current(&args->stateid, | |
4027 | args->context, | |
4028 | args->lock_context, | |
4029 | FMODE_READ)) | |
4030 | return false; | |
4031 | rpc_restart_call_prepare(task); | |
4032 | return true; | |
4033 | } | |
4034 | ||
cbdabc7f AA |
4035 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
4036 | { | |
4037 | ||
4038 | dprintk("--> %s\n", __func__); | |
4039 | ||
4040 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4041 | return -EAGAIN; | |
5521abfd TM |
4042 | if (nfs4_read_stateid_changed(task, &data->args)) |
4043 | return -EAGAIN; | |
d20581aa BH |
4044 | return data->read_done_cb ? data->read_done_cb(task, data) : |
4045 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
4046 | } |
4047 | ||
bdc7f021 | 4048 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 4049 | { |
1da177e4 | 4050 | data->timestamp = jiffies; |
cbdabc7f | 4051 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 4052 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
a9c92d6b | 4053 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
4054 | } |
4055 | ||
ef1820f9 | 4056 | static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
ea7c3303 | 4057 | { |
9b206149 | 4058 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4059 | &data->args.seq_args, |
4060 | &data->res.seq_res, | |
9b206149 | 4061 | task)) |
ef1820f9 N |
4062 | return 0; |
4063 | if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4064 | data->args.lock_context, FMODE_READ) == -EIO) | |
4065 | return -EIO; | |
4066 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) | |
4067 | return -EIO; | |
4068 | return 0; | |
1da177e4 LT |
4069 | } |
4070 | ||
b029bc9b | 4071 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 4072 | { |
cd841605 | 4073 | struct inode *inode = data->header->inode; |
1da177e4 | 4074 | |
cc668ab3 | 4075 | trace_nfs4_write(data, task->tk_status); |
9e33bed5 | 4076 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4077 | rpc_restart_call_prepare(task); |
788e7a89 | 4078 | return -EAGAIN; |
1da177e4 | 4079 | } |
4f9838c7 | 4080 | if (task->tk_status >= 0) { |
1da177e4 | 4081 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 4082 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 4083 | } |
788e7a89 | 4084 | return 0; |
1da177e4 LT |
4085 | } |
4086 | ||
5521abfd TM |
4087 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
4088 | struct nfs_writeargs *args) | |
4089 | { | |
4090 | ||
4091 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4092 | nfs4_stateid_is_current(&args->stateid, | |
4093 | args->context, | |
4094 | args->lock_context, | |
4095 | FMODE_WRITE)) | |
4096 | return false; | |
4097 | rpc_restart_call_prepare(task); | |
4098 | return true; | |
4099 | } | |
4100 | ||
b029bc9b FI |
4101 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
4102 | { | |
4103 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4104 | return -EAGAIN; | |
5521abfd TM |
4105 | if (nfs4_write_stateid_changed(task, &data->args)) |
4106 | return -EAGAIN; | |
d20581aa BH |
4107 | return data->write_done_cb ? data->write_done_cb(task, data) : |
4108 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
4109 | } |
4110 | ||
5a37f851 TM |
4111 | static |
4112 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 4113 | { |
5a37f851 TM |
4114 | const struct nfs_pgio_header *hdr = data->header; |
4115 | ||
4116 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
4117 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
4118 | return false; | |
4119 | /* Otherwise, request attributes if and only if we don't hold | |
4120 | * a delegation | |
4121 | */ | |
011e2a7f | 4122 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4123 | } |
a69aef14 | 4124 | |
bdc7f021 | 4125 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 4126 | { |
cd841605 | 4127 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 4128 | |
5a37f851 | 4129 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
4130 | data->args.bitmask = NULL; |
4131 | data->res.fattr = NULL; | |
4132 | } else | |
4133 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 4134 | |
b029bc9b FI |
4135 | if (!data->write_done_cb) |
4136 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 4137 | data->res.server = server; |
1da177e4 LT |
4138 | data->timestamp = jiffies; |
4139 | ||
bdc7f021 | 4140 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
a9c92d6b | 4141 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4142 | } |
4143 | ||
ef1820f9 | 4144 | static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
c6cb80d0 | 4145 | { |
9b206149 | 4146 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4147 | &data->args.seq_args, |
4148 | &data->res.seq_res, | |
9b206149 | 4149 | task)) |
ef1820f9 N |
4150 | return 0; |
4151 | if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4152 | data->args.lock_context, FMODE_WRITE) == -EIO) | |
4153 | return -EIO; | |
4154 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) | |
4155 | return -EIO; | |
4156 | return 0; | |
1da177e4 LT |
4157 | } |
4158 | ||
0b7c0153 | 4159 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4160 | { |
d9afbd1b TM |
4161 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4162 | &data->args.seq_args, | |
4163 | &data->res.seq_res, | |
4164 | task); | |
1da177e4 LT |
4165 | } |
4166 | ||
0b7c0153 | 4167 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4168 | { |
1da177e4 | 4169 | struct inode *inode = data->inode; |
14516c3a | 4170 | |
cc668ab3 | 4171 | trace_nfs4_commit(data, task->tk_status); |
9e33bed5 | 4172 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4173 | rpc_restart_call_prepare(task); |
788e7a89 | 4174 | return -EAGAIN; |
1da177e4 | 4175 | } |
788e7a89 | 4176 | return 0; |
1da177e4 LT |
4177 | } |
4178 | ||
0b7c0153 | 4179 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4180 | { |
4181 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4182 | return -EAGAIN; | |
0b7c0153 | 4183 | return data->commit_done_cb(task, data); |
5f452431 FI |
4184 | } |
4185 | ||
0b7c0153 | 4186 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4187 | { |
788e7a89 | 4188 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4189 | |
0b7c0153 FI |
4190 | if (data->commit_done_cb == NULL) |
4191 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4192 | data->res.server = server; |
bdc7f021 | 4193 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4194 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4195 | } |
4196 | ||
9bc4e3ca CL |
4197 | struct nfs4_renewdata { |
4198 | struct nfs_client *client; | |
4199 | unsigned long timestamp; | |
4200 | }; | |
4201 | ||
1da177e4 LT |
4202 | /* |
4203 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4204 | * standalone procedure for queueing an asynchronous RENEW. | |
4205 | */ | |
9bc4e3ca | 4206 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4207 | { |
9bc4e3ca CL |
4208 | struct nfs4_renewdata *data = calldata; |
4209 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4210 | |
0851de06 AB |
4211 | if (atomic_read(&clp->cl_count) > 1) |
4212 | nfs4_schedule_state_renewal(clp); | |
4213 | nfs_put_client(clp); | |
9bc4e3ca | 4214 | kfree(data); |
dc96aef9 AB |
4215 | } |
4216 | ||
9bc4e3ca | 4217 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4218 | { |
9bc4e3ca CL |
4219 | struct nfs4_renewdata *data = calldata; |
4220 | struct nfs_client *clp = data->client; | |
4221 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4222 | |
c6d01c6f | 4223 | trace_nfs4_renew_async(clp, task->tk_status); |
1da177e4 | 4224 | if (task->tk_status < 0) { |
95baa25c | 4225 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4226 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4227 | return; | |
4228 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4229 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4230 | return; |
4231 | } | |
4232 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4233 | } |
452e9352 | 4234 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4235 | } |
4236 | ||
963d8fe5 TM |
4237 | static const struct rpc_call_ops nfs4_renew_ops = { |
4238 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4239 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4240 | }; |
4241 | ||
2f60ea6b | 4242 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4243 | { |
4244 | struct rpc_message msg = { | |
4245 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4246 | .rpc_argp = clp, | |
b4454fe1 | 4247 | .rpc_cred = cred, |
1da177e4 | 4248 | }; |
9bc4e3ca | 4249 | struct nfs4_renewdata *data; |
1da177e4 | 4250 | |
2f60ea6b TM |
4251 | if (renew_flags == 0) |
4252 | return 0; | |
0851de06 AB |
4253 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4254 | return -EIO; | |
b569ad34 | 4255 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4256 | if (data == NULL) |
4257 | return -ENOMEM; | |
4258 | data->client = clp; | |
4259 | data->timestamp = jiffies; | |
bc7a05ca | 4260 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4261 | &nfs4_renew_ops, data); |
1da177e4 LT |
4262 | } |
4263 | ||
8534d4ec | 4264 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4265 | { |
4266 | struct rpc_message msg = { | |
4267 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4268 | .rpc_argp = clp, | |
b4454fe1 | 4269 | .rpc_cred = cred, |
1da177e4 LT |
4270 | }; |
4271 | unsigned long now = jiffies; | |
4272 | int status; | |
4273 | ||
bc7a05ca | 4274 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4275 | if (status < 0) |
4276 | return status; | |
452e9352 | 4277 | do_renew_lease(clp, now); |
1da177e4 LT |
4278 | return 0; |
4279 | } | |
4280 | ||
aa1870af BF |
4281 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4282 | { | |
4283 | return (server->caps & NFS_CAP_ACLS) | |
4284 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
4285 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
4286 | } | |
4287 | ||
21f498c2 TM |
4288 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4289 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4290 | * the stack. |
4291 | */ | |
21f498c2 | 4292 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4293 | |
e9e3d724 NH |
4294 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4295 | struct page **pages, unsigned int *pgbase) | |
4296 | { | |
4297 | struct page *newpage, **spages; | |
4298 | int rc = 0; | |
4299 | size_t len; | |
4300 | spages = pages; | |
4301 | ||
4302 | do { | |
21f498c2 | 4303 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4304 | newpage = alloc_page(GFP_KERNEL); |
4305 | ||
4306 | if (newpage == NULL) | |
4307 | goto unwind; | |
4308 | memcpy(page_address(newpage), buf, len); | |
4309 | buf += len; | |
4310 | buflen -= len; | |
4311 | *pages++ = newpage; | |
4312 | rc++; | |
4313 | } while (buflen != 0); | |
4314 | ||
4315 | return rc; | |
4316 | ||
4317 | unwind: | |
4318 | for(; rc > 0; rc--) | |
4319 | __free_page(spages[rc-1]); | |
4320 | return -ENOMEM; | |
4321 | } | |
4322 | ||
e50a1c2e BF |
4323 | struct nfs4_cached_acl { |
4324 | int cached; | |
4325 | size_t len; | |
3e9d4154 | 4326 | char data[0]; |
e50a1c2e BF |
4327 | }; |
4328 | ||
4329 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4330 | { | |
4331 | struct nfs_inode *nfsi = NFS_I(inode); | |
4332 | ||
4333 | spin_lock(&inode->i_lock); | |
4334 | kfree(nfsi->nfs4_acl); | |
4335 | nfsi->nfs4_acl = acl; | |
4336 | spin_unlock(&inode->i_lock); | |
4337 | } | |
4338 | ||
4339 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4340 | { | |
4341 | nfs4_set_cached_acl(inode, NULL); | |
4342 | } | |
4343 | ||
4344 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4345 | { | |
4346 | struct nfs_inode *nfsi = NFS_I(inode); | |
4347 | struct nfs4_cached_acl *acl; | |
4348 | int ret = -ENOENT; | |
4349 | ||
4350 | spin_lock(&inode->i_lock); | |
4351 | acl = nfsi->nfs4_acl; | |
4352 | if (acl == NULL) | |
4353 | goto out; | |
4354 | if (buf == NULL) /* user is just asking for length */ | |
4355 | goto out_len; | |
4356 | if (acl->cached == 0) | |
4357 | goto out; | |
4358 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4359 | if (acl->len > buflen) | |
4360 | goto out; | |
4361 | memcpy(buf, acl->data, acl->len); | |
4362 | out_len: | |
4363 | ret = acl->len; | |
4364 | out: | |
4365 | spin_unlock(&inode->i_lock); | |
4366 | return ret; | |
4367 | } | |
4368 | ||
5794d21e | 4369 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4370 | { |
4371 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4372 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4373 | |
1f1ea6c2 | 4374 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4375 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4376 | if (acl == NULL) |
4377 | goto out; | |
4378 | acl->cached = 1; | |
5794d21e | 4379 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4380 | } else { |
4381 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4382 | if (acl == NULL) | |
4383 | goto out; | |
4384 | acl->cached = 0; | |
4385 | } | |
4386 | acl->len = acl_len; | |
4387 | out: | |
4388 | nfs4_set_cached_acl(inode, acl); | |
4389 | } | |
4390 | ||
bf118a34 AA |
4391 | /* |
4392 | * The getxattr API returns the required buffer length when called with a | |
4393 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4394 | * the required buf. On a NULL buf, we send a page of data to the server | |
4395 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4396 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4397 | * the cache. If not so, we throw away the page, and cache the required | |
4398 | * length. The next getxattr call will then produce another round trip to | |
4399 | * the server, this time with the input buf of the required size. | |
4400 | */ | |
16b4289c | 4401 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4402 | { |
bf118a34 | 4403 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4404 | struct nfs_getaclargs args = { |
4405 | .fh = NFS_FH(inode), | |
4406 | .acl_pages = pages, | |
4407 | .acl_len = buflen, | |
4408 | }; | |
663c79b3 BH |
4409 | struct nfs_getaclres res = { |
4410 | .acl_len = buflen, | |
4411 | }; | |
aa1870af BF |
4412 | struct rpc_message msg = { |
4413 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4414 | .rpc_argp = &args, | |
663c79b3 | 4415 | .rpc_resp = &res, |
aa1870af | 4416 | }; |
21f498c2 TM |
4417 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4418 | int ret = -ENOMEM, i; | |
aa1870af | 4419 | |
bf118a34 AA |
4420 | /* As long as we're doing a round trip to the server anyway, |
4421 | * let's be prepared for a page of acl data. */ | |
4422 | if (npages == 0) | |
4423 | npages = 1; | |
21f498c2 TM |
4424 | if (npages > ARRAY_SIZE(pages)) |
4425 | return -ERANGE; | |
5a006899 | 4426 | |
bf118a34 AA |
4427 | for (i = 0; i < npages; i++) { |
4428 | pages[i] = alloc_page(GFP_KERNEL); | |
4429 | if (!pages[i]) | |
4430 | goto out_free; | |
e50a1c2e | 4431 | } |
5a006899 SP |
4432 | |
4433 | /* for decoding across pages */ | |
4434 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4435 | if (!res.acl_scratch) | |
4436 | goto out_free; | |
4437 | ||
bf118a34 AA |
4438 | args.acl_len = npages * PAGE_SIZE; |
4439 | args.acl_pgbase = 0; | |
5a006899 | 4440 | |
de040bec | 4441 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4442 | __func__, buf, buflen, npages, args.acl_len); |
4443 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4444 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4445 | if (ret) |
4446 | goto out_free; | |
bf118a34 | 4447 | |
1f1ea6c2 TM |
4448 | /* Handle the case where the passed-in buffer is too short */ |
4449 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4450 | /* Did the user only issue a request for the acl length? */ | |
4451 | if (buf == NULL) | |
4452 | goto out_ok; | |
e50a1c2e | 4453 | ret = -ERANGE; |
1f1ea6c2 | 4454 | goto out_free; |
e50a1c2e | 4455 | } |
1f1ea6c2 | 4456 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4457 | if (buf) { |
4458 | if (res.acl_len > buflen) { | |
4459 | ret = -ERANGE; | |
4460 | goto out_free; | |
4461 | } | |
1f1ea6c2 | 4462 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4463 | } |
1f1ea6c2 TM |
4464 | out_ok: |
4465 | ret = res.acl_len; | |
e50a1c2e | 4466 | out_free: |
bf118a34 AA |
4467 | for (i = 0; i < npages; i++) |
4468 | if (pages[i]) | |
4469 | __free_page(pages[i]); | |
331818f1 TM |
4470 | if (res.acl_scratch) |
4471 | __free_page(res.acl_scratch); | |
aa1870af BF |
4472 | return ret; |
4473 | } | |
4474 | ||
16b4289c TM |
4475 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4476 | { | |
4477 | struct nfs4_exception exception = { }; | |
4478 | ssize_t ret; | |
4479 | do { | |
4480 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4481 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4482 | if (ret >= 0) |
4483 | break; | |
4484 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4485 | } while (exception.retry); | |
4486 | return ret; | |
4487 | } | |
4488 | ||
e50a1c2e BF |
4489 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4490 | { | |
4491 | struct nfs_server *server = NFS_SERVER(inode); | |
4492 | int ret; | |
4493 | ||
4494 | if (!nfs4_server_supports_acls(server)) | |
4495 | return -EOPNOTSUPP; | |
4496 | ret = nfs_revalidate_inode(server, inode); | |
4497 | if (ret < 0) | |
4498 | return ret; | |
08a22b39 AK |
4499 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4500 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4501 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4502 | if (ret != -ENOENT) | |
bf118a34 AA |
4503 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4504 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4505 | return ret; |
4506 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4507 | } | |
4508 | ||
16b4289c | 4509 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4510 | { |
4511 | struct nfs_server *server = NFS_SERVER(inode); | |
4512 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4513 | struct nfs_setaclargs arg = { | |
4514 | .fh = NFS_FH(inode), | |
4515 | .acl_pages = pages, | |
4516 | .acl_len = buflen, | |
4517 | }; | |
73c403a9 | 4518 | struct nfs_setaclres res; |
4b580ee3 BF |
4519 | struct rpc_message msg = { |
4520 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4521 | .rpc_argp = &arg, | |
73c403a9 | 4522 | .rpc_resp = &res, |
4b580ee3 | 4523 | }; |
21f498c2 | 4524 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4525 | int ret, i; |
4b580ee3 BF |
4526 | |
4527 | if (!nfs4_server_supports_acls(server)) | |
4528 | return -EOPNOTSUPP; | |
21f498c2 TM |
4529 | if (npages > ARRAY_SIZE(pages)) |
4530 | return -ERANGE; | |
e9e3d724 NH |
4531 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4532 | if (i < 0) | |
4533 | return i; | |
57ec14c5 | 4534 | nfs4_inode_return_delegation(inode); |
7c513058 | 4535 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4536 | |
4537 | /* | |
4538 | * Free each page after tx, so the only ref left is | |
4539 | * held by the network stack | |
4540 | */ | |
4541 | for (; i > 0; i--) | |
4542 | put_page(pages[i-1]); | |
4543 | ||
08a22b39 AK |
4544 | /* |
4545 | * Acl update can result in inode attribute update. | |
4546 | * so mark the attribute cache invalid. | |
4547 | */ | |
4548 | spin_lock(&inode->i_lock); | |
4549 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4550 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4551 | nfs_access_zap_cache(inode); |
4552 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4553 | return ret; |
4554 | } | |
4555 | ||
16b4289c TM |
4556 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4557 | { | |
4558 | struct nfs4_exception exception = { }; | |
4559 | int err; | |
4560 | do { | |
c1578b76 TM |
4561 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4562 | trace_nfs4_set_acl(inode, err); | |
4563 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4564 | &exception); |
4565 | } while (exception.retry); | |
4566 | return err; | |
4567 | } | |
4568 | ||
aa9c2669 DQ |
4569 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4570 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4571 | size_t buflen) | |
4572 | { | |
4573 | struct nfs_server *server = NFS_SERVER(inode); | |
4574 | struct nfs_fattr fattr; | |
4575 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4576 | ||
4577 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4578 | struct nfs4_getattr_arg args = { | |
4579 | .fh = NFS_FH(inode), | |
4580 | .bitmask = bitmask, | |
4581 | }; | |
4582 | struct nfs4_getattr_res res = { | |
4583 | .fattr = &fattr, | |
4584 | .label = &label, | |
4585 | .server = server, | |
4586 | }; | |
4587 | struct rpc_message msg = { | |
4588 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4589 | .rpc_argp = &args, | |
4590 | .rpc_resp = &res, | |
4591 | }; | |
4592 | int ret; | |
4593 | ||
4594 | nfs_fattr_init(&fattr); | |
4595 | ||
4596 | ret = rpc_call_sync(server->client, &msg, 0); | |
4597 | if (ret) | |
4598 | return ret; | |
4599 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4600 | return -ENOENT; | |
4601 | if (buflen < label.len) | |
4602 | return -ERANGE; | |
4603 | return 0; | |
4604 | } | |
4605 | ||
4606 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4607 | size_t buflen) | |
4608 | { | |
4609 | struct nfs4_exception exception = { }; | |
4610 | int err; | |
4611 | ||
4612 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4613 | return -EOPNOTSUPP; | |
4614 | ||
4615 | do { | |
c1578b76 TM |
4616 | err = _nfs4_get_security_label(inode, buf, buflen); |
4617 | trace_nfs4_get_security_label(inode, err); | |
4618 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4619 | &exception); |
4620 | } while (exception.retry); | |
4621 | return err; | |
4622 | } | |
4623 | ||
4624 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4625 | struct nfs4_label *ilabel, | |
4626 | struct nfs_fattr *fattr, | |
4627 | struct nfs4_label *olabel) | |
4628 | { | |
4629 | ||
4630 | struct iattr sattr = {0}; | |
4631 | struct nfs_server *server = NFS_SERVER(inode); | |
4632 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4633 | struct nfs_setattrargs args = { | |
4634 | .fh = NFS_FH(inode), | |
4635 | .iap = &sattr, | |
4636 | .server = server, | |
4637 | .bitmask = bitmask, | |
4638 | .label = ilabel, | |
4639 | }; | |
4640 | struct nfs_setattrres res = { | |
4641 | .fattr = fattr, | |
4642 | .label = olabel, | |
4643 | .server = server, | |
4644 | }; | |
4645 | struct rpc_message msg = { | |
4646 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
4647 | .rpc_argp = &args, | |
4648 | .rpc_resp = &res, | |
4649 | }; | |
4650 | int status; | |
4651 | ||
4652 | nfs4_stateid_copy(&args.stateid, &zero_stateid); | |
4653 | ||
4654 | status = rpc_call_sync(server->client, &msg, 0); | |
4655 | if (status) | |
4656 | dprintk("%s failed: %d\n", __func__, status); | |
4657 | ||
4658 | return status; | |
4659 | } | |
4660 | ||
4661 | static int nfs4_do_set_security_label(struct inode *inode, | |
4662 | struct nfs4_label *ilabel, | |
4663 | struct nfs_fattr *fattr, | |
4664 | struct nfs4_label *olabel) | |
4665 | { | |
4666 | struct nfs4_exception exception = { }; | |
4667 | int err; | |
4668 | ||
4669 | do { | |
c1578b76 TM |
4670 | err = _nfs4_do_set_security_label(inode, ilabel, |
4671 | fattr, olabel); | |
4672 | trace_nfs4_set_security_label(inode, err); | |
4673 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4674 | &exception); |
4675 | } while (exception.retry); | |
4676 | return err; | |
4677 | } | |
4678 | ||
4679 | static int | |
4680 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4681 | { | |
4682 | struct nfs4_label ilabel, *olabel = NULL; | |
4683 | struct nfs_fattr fattr; | |
4684 | struct rpc_cred *cred; | |
4685 | struct inode *inode = dentry->d_inode; | |
4686 | int status; | |
4687 | ||
4688 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4689 | return -EOPNOTSUPP; | |
4690 | ||
4691 | nfs_fattr_init(&fattr); | |
4692 | ||
4693 | ilabel.pi = 0; | |
4694 | ilabel.lfs = 0; | |
4695 | ilabel.label = (char *)buf; | |
4696 | ilabel.len = buflen; | |
4697 | ||
4698 | cred = rpc_lookup_cred(); | |
4699 | if (IS_ERR(cred)) | |
4700 | return PTR_ERR(cred); | |
4701 | ||
4702 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4703 | if (IS_ERR(olabel)) { | |
4704 | status = -PTR_ERR(olabel); | |
4705 | goto out; | |
4706 | } | |
4707 | ||
4708 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4709 | if (status == 0) | |
4710 | nfs_setsecurity(inode, &fattr, olabel); | |
4711 | ||
4712 | nfs4_label_free(olabel); | |
4713 | out: | |
4714 | put_rpccred(cred); | |
4715 | return status; | |
4716 | } | |
4717 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4718 | ||
4719 | ||
1da177e4 | 4720 | static int |
aa5190d0 | 4721 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4722 | { |
aa5190d0 TM |
4723 | struct nfs_client *clp = server->nfs_client; |
4724 | ||
4725 | if (task->tk_status >= 0) | |
1da177e4 LT |
4726 | return 0; |
4727 | switch(task->tk_status) { | |
a1d0b5ee | 4728 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4729 | case -NFS4ERR_ADMIN_REVOKED: |
4730 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4731 | if (state == NULL) |
4732 | break; | |
4733 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4734 | case -NFS4ERR_OPENMODE: |
4735 | if (state == NULL) | |
4736 | break; | |
5d422301 TM |
4737 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4738 | goto stateid_invalid; | |
0400a6b0 | 4739 | goto wait_on_recovery; |
0ced63d1 | 4740 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4741 | if (state != NULL) { |
4742 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4743 | goto stateid_invalid; | |
4744 | } | |
1da177e4 | 4745 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4746 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4747 | nfs4_schedule_lease_recovery(clp); |
4748 | goto wait_on_recovery; | |
4745e315 AA |
4749 | #if defined(CONFIG_NFS_V4_1) |
4750 | case -NFS4ERR_BADSESSION: | |
4751 | case -NFS4ERR_BADSLOT: | |
4752 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4753 | case -NFS4ERR_DEADSESSION: | |
4754 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4755 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4756 | case -NFS4ERR_SEQ_MISORDERED: | |
4757 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4758 | task->tk_status); | |
9f594791 | 4759 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4760 | task->tk_status = 0; |
4761 | return -EAGAIN; | |
4762 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4763 | case -NFS4ERR_DELAY: |
aa5190d0 | 4764 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4765 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4766 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4767 | task->tk_status = 0; | |
4768 | return -EAGAIN; | |
a8a4ae3a | 4769 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4770 | case -NFS4ERR_OLD_STATEID: |
4771 | task->tk_status = 0; | |
4772 | return -EAGAIN; | |
4773 | } | |
4774 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4775 | return 0; | |
5d422301 TM |
4776 | stateid_invalid: |
4777 | task->tk_status = -EIO; | |
4778 | return 0; | |
0400a6b0 | 4779 | wait_on_recovery: |
a2c0b9e2 | 4780 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4781 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4782 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4783 | task->tk_status = 0; | |
4784 | return -EAGAIN; | |
1da177e4 LT |
4785 | } |
4786 | ||
f092075d CL |
4787 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4788 | nfs4_verifier *bootverf) | |
cd93710e CL |
4789 | { |
4790 | __be32 verf[2]; | |
4791 | ||
2c820d9a CL |
4792 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4793 | /* An impossible timestamp guarantees this value | |
4794 | * will never match a generated boot time. */ | |
4795 | verf[0] = 0; | |
17f26b12 | 4796 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4797 | } else { |
f092075d | 4798 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4799 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4800 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4801 | } |
cd93710e CL |
4802 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4803 | } | |
4804 | ||
e984a55a CL |
4805 | static unsigned int |
4806 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4807 | char *buf, size_t len) | |
4808 | { | |
4809 | unsigned int result; | |
4810 | ||
4811 | rcu_read_lock(); | |
4812 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4813 | clp->cl_ipaddr, | |
4814 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4815 | RPC_DISPLAY_ADDR), | |
4816 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4817 | RPC_DISPLAY_PROTO)); | |
4818 | rcu_read_unlock(); | |
4819 | return result; | |
4820 | } | |
4821 | ||
4822 | static unsigned int | |
4823 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4824 | char *buf, size_t len) | |
4825 | { | |
55b59293 | 4826 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4827 | |
4828 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4829 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4830 | clp->rpc_ops->version, | |
4831 | clp->cl_minorversion, | |
4832 | nfs4_client_id_uniquifier, | |
4833 | nodename); | |
e984a55a CL |
4834 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4835 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4836 | nodename); |
e984a55a CL |
4837 | } |
4838 | ||
6bbb4ae8 CL |
4839 | /** |
4840 | * nfs4_proc_setclientid - Negotiate client ID | |
4841 | * @clp: state data structure | |
4842 | * @program: RPC program for NFSv4 callback service | |
4843 | * @port: IP port number for NFS4 callback service | |
4844 | * @cred: RPC credential to use for this call | |
4845 | * @res: where to place the result | |
4846 | * | |
4847 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4848 | */ | |
bb8b27e5 TM |
4849 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4850 | unsigned short port, struct rpc_cred *cred, | |
4851 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4852 | { |
4853 | nfs4_verifier sc_verifier; | |
4854 | struct nfs4_setclientid setclientid = { | |
4855 | .sc_verifier = &sc_verifier, | |
4856 | .sc_prog = program, | |
f4eecd5d | 4857 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4858 | }; |
4859 | struct rpc_message msg = { | |
4860 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4861 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4862 | .rpc_resp = res, |
286d7d6a | 4863 | .rpc_cred = cred, |
1da177e4 | 4864 | }; |
6bbb4ae8 | 4865 | int status; |
1da177e4 | 4866 | |
de734831 | 4867 | /* nfs_client_id4 */ |
f092075d | 4868 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4869 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4870 | setclientid.sc_name_len = | |
4871 | nfs4_init_uniform_client_string(clp, | |
4872 | setclientid.sc_name, | |
4873 | sizeof(setclientid.sc_name)); | |
4874 | else | |
4875 | setclientid.sc_name_len = | |
4876 | nfs4_init_nonuniform_client_string(clp, | |
4877 | setclientid.sc_name, | |
4878 | sizeof(setclientid.sc_name)); | |
de734831 | 4879 | /* cb_client4 */ |
e984a55a | 4880 | rcu_read_lock(); |
de734831 | 4881 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
fe2d5395 | 4882 | sizeof(setclientid.sc_netid), "%s", |
d4d3c507 CL |
4883 | rpc_peeraddr2str(clp->cl_rpcclient, |
4884 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4885 | rcu_read_unlock(); |
4886 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4887 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4888 | clp->cl_ipaddr, port >> 8, port & 255); |
4889 | ||
6bbb4ae8 CL |
4890 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4891 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4892 | setclientid.sc_name_len, setclientid.sc_name); | |
4893 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4894 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4895 | dprintk("NFS reply setclientid: %d\n", status); |
4896 | return status; | |
1da177e4 LT |
4897 | } |
4898 | ||
6bbb4ae8 CL |
4899 | /** |
4900 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4901 | * @clp: state data structure | |
4902 | * @res: result of a previous SETCLIENTID | |
4903 | * @cred: RPC credential to use for this call | |
4904 | * | |
4905 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4906 | */ | |
fd954ae1 | 4907 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4908 | struct nfs4_setclientid_res *arg, |
4909 | struct rpc_cred *cred) | |
1da177e4 | 4910 | { |
1da177e4 LT |
4911 | struct rpc_message msg = { |
4912 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4913 | .rpc_argp = arg, |
286d7d6a | 4914 | .rpc_cred = cred, |
1da177e4 | 4915 | }; |
1da177e4 LT |
4916 | int status; |
4917 | ||
6bbb4ae8 CL |
4918 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4919 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4920 | clp->cl_clientid); | |
1bd714f2 | 4921 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4922 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4923 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4924 | return status; |
4925 | } | |
4926 | ||
fe650407 TM |
4927 | struct nfs4_delegreturndata { |
4928 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4929 | struct nfs4_delegreturnres res; |
fe650407 TM |
4930 | struct nfs_fh fh; |
4931 | nfs4_stateid stateid; | |
26e976a8 | 4932 | unsigned long timestamp; |
fa178f29 | 4933 | struct nfs_fattr fattr; |
fe650407 TM |
4934 | int rpc_status; |
4935 | }; | |
4936 | ||
fe650407 TM |
4937 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4938 | { | |
4939 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4940 | |
14516c3a TM |
4941 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4942 | return; | |
938e1010 | 4943 | |
ca8acf8d | 4944 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 RL |
4945 | switch (task->tk_status) { |
4946 | case -NFS4ERR_STALE_STATEID: | |
4947 | case -NFS4ERR_EXPIRED: | |
4948 | case 0: | |
fa178f29 | 4949 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4950 | break; |
4951 | default: | |
4952 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4953 | -EAGAIN) { | |
d00c5d43 | 4954 | rpc_restart_call_prepare(task); |
79708861 RL |
4955 | return; |
4956 | } | |
4957 | } | |
4958 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4959 | } |
4960 | ||
4961 | static void nfs4_delegreturn_release(void *calldata) | |
4962 | { | |
fe650407 TM |
4963 | kfree(calldata); |
4964 | } | |
4965 | ||
938e1010 AA |
4966 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
4967 | { | |
4968 | struct nfs4_delegreturndata *d_data; | |
4969 | ||
4970 | d_data = (struct nfs4_delegreturndata *)data; | |
4971 | ||
d9afbd1b TM |
4972 | nfs4_setup_sequence(d_data->res.server, |
4973 | &d_data->args.seq_args, | |
4974 | &d_data->res.seq_res, | |
4975 | task); | |
938e1010 | 4976 | } |
938e1010 | 4977 | |
c8d149f3 | 4978 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 4979 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
4980 | .rpc_call_done = nfs4_delegreturn_done, |
4981 | .rpc_release = nfs4_delegreturn_release, | |
4982 | }; | |
4983 | ||
e6f81075 | 4984 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4985 | { |
4986 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4987 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4988 | struct rpc_task *task; |
5138fde0 TM |
4989 | struct rpc_message msg = { |
4990 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4991 | .rpc_cred = cred, | |
4992 | }; | |
c970aa85 TM |
4993 | struct rpc_task_setup task_setup_data = { |
4994 | .rpc_client = server->client, | |
5138fde0 | 4995 | .rpc_message = &msg, |
c970aa85 TM |
4996 | .callback_ops = &nfs4_delegreturn_ops, |
4997 | .flags = RPC_TASK_ASYNC, | |
4998 | }; | |
e6f81075 | 4999 | int status = 0; |
fe650407 | 5000 | |
8535b2be | 5001 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5002 | if (data == NULL) |
5003 | return -ENOMEM; | |
a9c92d6b | 5004 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5005 | data->args.fhandle = &data->fh; |
5006 | data->args.stateid = &data->stateid; | |
9e907fec | 5007 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5008 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5009 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5010 | data->res.fattr = &data->fattr; |
5011 | data->res.server = server; | |
5138fde0 | 5012 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5013 | data->timestamp = jiffies; |
fe650407 TM |
5014 | data->rpc_status = 0; |
5015 | ||
c970aa85 | 5016 | task_setup_data.callback_data = data; |
1174dd1f TM |
5017 | msg.rpc_argp = &data->args; |
5018 | msg.rpc_resp = &data->res; | |
c970aa85 | 5019 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5020 | if (IS_ERR(task)) |
fe650407 | 5021 | return PTR_ERR(task); |
e6f81075 TM |
5022 | if (!issync) |
5023 | goto out; | |
fe650407 | 5024 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5025 | if (status != 0) |
5026 | goto out; | |
5027 | status = data->rpc_status; | |
e144cbcc TM |
5028 | if (status == 0) |
5029 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5030 | else | |
5031 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5032 | out: |
e6b3c4db | 5033 | rpc_put_task(task); |
fe650407 | 5034 | return status; |
1da177e4 LT |
5035 | } |
5036 | ||
e6f81075 | 5037 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5038 | { |
5039 | struct nfs_server *server = NFS_SERVER(inode); | |
5040 | struct nfs4_exception exception = { }; | |
5041 | int err; | |
5042 | do { | |
e6f81075 | 5043 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5044 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5045 | switch (err) { |
5046 | case -NFS4ERR_STALE_STATEID: | |
5047 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5048 | case 0: |
5049 | return 0; | |
5050 | } | |
5051 | err = nfs4_handle_exception(server, err, &exception); | |
5052 | } while (exception.retry); | |
5053 | return err; | |
5054 | } | |
5055 | ||
5056 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5057 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5058 | ||
5059 | /* | |
5060 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5061 | */ | |
5062 | static unsigned long | |
5063 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5064 | { | |
416ad3c9 | 5065 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5066 | timeout <<= 1; |
5067 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5068 | return NFS4_LOCK_MAXTIMEOUT; | |
5069 | return timeout; | |
5070 | } | |
5071 | ||
1da177e4 LT |
5072 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5073 | { | |
5074 | struct inode *inode = state->inode; | |
5075 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5076 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5077 | struct nfs_lockt_args arg = { |
1da177e4 | 5078 | .fh = NFS_FH(inode), |
911d1aaf | 5079 | .fl = request, |
1da177e4 | 5080 | }; |
911d1aaf TM |
5081 | struct nfs_lockt_res res = { |
5082 | .denied = request, | |
1da177e4 LT |
5083 | }; |
5084 | struct rpc_message msg = { | |
5085 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5086 | .rpc_argp = &arg, | |
5087 | .rpc_resp = &res, | |
5088 | .rpc_cred = state->owner->so_cred, | |
5089 | }; | |
1da177e4 LT |
5090 | struct nfs4_lock_state *lsp; |
5091 | int status; | |
5092 | ||
911d1aaf | 5093 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5094 | status = nfs4_set_lock_state(state, request); |
5095 | if (status != 0) | |
5096 | goto out; | |
5097 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5098 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5099 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5100 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5101 | switch (status) { |
5102 | case 0: | |
5103 | request->fl_type = F_UNLCK; | |
5104 | break; | |
5105 | case -NFS4ERR_DENIED: | |
5106 | status = 0; | |
1da177e4 | 5107 | } |
70cc6487 | 5108 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 5109 | out: |
1da177e4 LT |
5110 | return status; |
5111 | } | |
5112 | ||
5113 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5114 | { | |
5115 | struct nfs4_exception exception = { }; | |
5116 | int err; | |
5117 | ||
5118 | do { | |
d1b748a5 TM |
5119 | err = _nfs4_proc_getlk(state, cmd, request); |
5120 | trace_nfs4_get_lock(request, state, cmd, err); | |
5121 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5122 | &exception); |
5123 | } while (exception.retry); | |
5124 | return err; | |
5125 | } | |
5126 | ||
5127 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5128 | { | |
5129 | int res = 0; | |
5130 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5131 | case FL_POSIX: | |
5132 | res = posix_lock_file_wait(file, fl); | |
5133 | break; | |
5134 | case FL_FLOCK: | |
5135 | res = flock_lock_file_wait(file, fl); | |
5136 | break; | |
5137 | default: | |
5138 | BUG(); | |
5139 | } | |
1da177e4 LT |
5140 | return res; |
5141 | } | |
5142 | ||
faf5f49c | 5143 | struct nfs4_unlockdata { |
911d1aaf TM |
5144 | struct nfs_locku_args arg; |
5145 | struct nfs_locku_res res; | |
faf5f49c TM |
5146 | struct nfs4_lock_state *lsp; |
5147 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5148 | struct file_lock fl; |
5149 | const struct nfs_server *server; | |
26e976a8 | 5150 | unsigned long timestamp; |
faf5f49c TM |
5151 | }; |
5152 | ||
911d1aaf TM |
5153 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5154 | struct nfs_open_context *ctx, | |
5155 | struct nfs4_lock_state *lsp, | |
5156 | struct nfs_seqid *seqid) | |
5157 | { | |
5158 | struct nfs4_unlockdata *p; | |
5159 | struct inode *inode = lsp->ls_state->inode; | |
5160 | ||
8535b2be | 5161 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5162 | if (p == NULL) |
5163 | return NULL; | |
5164 | p->arg.fh = NFS_FH(inode); | |
5165 | p->arg.fl = &p->fl; | |
5166 | p->arg.seqid = seqid; | |
c1d51931 | 5167 | p->res.seqid = seqid; |
911d1aaf TM |
5168 | p->arg.stateid = &lsp->ls_stateid; |
5169 | p->lsp = lsp; | |
5170 | atomic_inc(&lsp->ls_count); | |
5171 | /* Ensure we don't close file until we're done freeing locks! */ | |
5172 | p->ctx = get_nfs_open_context(ctx); | |
5173 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5174 | p->server = NFS_SERVER(inode); | |
5175 | return p; | |
5176 | } | |
5177 | ||
06f814a3 | 5178 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5179 | { |
963d8fe5 | 5180 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5181 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5182 | nfs4_put_lock_state(calldata->lsp); |
5183 | put_nfs_open_context(calldata->ctx); | |
5184 | kfree(calldata); | |
faf5f49c TM |
5185 | } |
5186 | ||
963d8fe5 | 5187 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5188 | { |
963d8fe5 | 5189 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5190 | |
14516c3a TM |
5191 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5192 | return; | |
faf5f49c TM |
5193 | switch (task->tk_status) { |
5194 | case 0: | |
f597c537 TM |
5195 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5196 | &calldata->res.stateid); | |
26e976a8 | 5197 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5198 | break; |
9e33bed5 TM |
5199 | case -NFS4ERR_BAD_STATEID: |
5200 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5201 | case -NFS4ERR_STALE_STATEID: |
5202 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5203 | break; |
5204 | default: | |
9e33bed5 | 5205 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5206 | rpc_restart_call_prepare(task); |
faf5f49c | 5207 | } |
2b1bc308 | 5208 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5209 | } |
5210 | ||
4ce70ada | 5211 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5212 | { |
4ce70ada | 5213 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5214 | |
911d1aaf | 5215 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5216 | goto out_wait; |
795a88c9 | 5217 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5218 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5219 | goto out_no_action; |
faf5f49c | 5220 | } |
26e976a8 | 5221 | calldata->timestamp = jiffies; |
035168ab | 5222 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5223 | &calldata->arg.seq_args, |
2240a9e2 TM |
5224 | &calldata->res.seq_res, |
5225 | task) != 0) | |
5226 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5227 | return; |
5228 | out_no_action: | |
5229 | task->tk_action = NULL; | |
5230 | out_wait: | |
5231 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5232 | } |
5233 | ||
963d8fe5 | 5234 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5235 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5236 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5237 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5238 | }; |
5239 | ||
a5d16a4d TM |
5240 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5241 | struct nfs_open_context *ctx, | |
5242 | struct nfs4_lock_state *lsp, | |
5243 | struct nfs_seqid *seqid) | |
5244 | { | |
5245 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5246 | struct rpc_message msg = { |
5247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5248 | .rpc_cred = ctx->cred, | |
5249 | }; | |
c970aa85 TM |
5250 | struct rpc_task_setup task_setup_data = { |
5251 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5252 | .rpc_message = &msg, |
c970aa85 | 5253 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5254 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5255 | .flags = RPC_TASK_ASYNC, |
5256 | }; | |
a5d16a4d | 5257 | |
fa940720 WAA |
5258 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5259 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5260 | ||
137d6aca FF |
5261 | /* Ensure this is an unlock - when canceling a lock, the |
5262 | * canceled lock is passed in, and it won't be an unlock. | |
5263 | */ | |
5264 | fl->fl_type = F_UNLCK; | |
5265 | ||
a5d16a4d TM |
5266 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5267 | if (data == NULL) { | |
5268 | nfs_free_seqid(seqid); | |
5269 | return ERR_PTR(-ENOMEM); | |
5270 | } | |
5271 | ||
a9c92d6b | 5272 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5273 | msg.rpc_argp = &data->arg; |
5274 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5275 | task_setup_data.callback_data = data; |
5276 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5277 | } |
5278 | ||
faf5f49c TM |
5279 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5280 | { | |
65b62a29 TM |
5281 | struct inode *inode = state->inode; |
5282 | struct nfs4_state_owner *sp = state->owner; | |
5283 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5284 | struct nfs_seqid *seqid; |
1da177e4 | 5285 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5286 | struct rpc_task *task; |
5287 | int status = 0; | |
536ff0f8 | 5288 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5289 | |
8d0a8a9d | 5290 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5291 | /* Unlock _before_ we do the RPC call */ |
5292 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5293 | /* Exclude nfs_delegation_claim_locks() */ |
5294 | mutex_lock(&sp->so_delegreturn_mutex); | |
5295 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5296 | down_read(&nfsi->rwsem); |
5297 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5298 | up_read(&nfsi->rwsem); | |
65b62a29 | 5299 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5300 | goto out; |
19e03c57 TM |
5301 | } |
5302 | up_read(&nfsi->rwsem); | |
65b62a29 | 5303 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5304 | if (status != 0) |
9b073574 TM |
5305 | goto out; |
5306 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5307 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5308 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5309 | goto out; | |
8535b2be | 5310 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5311 | status = -ENOMEM; |
911d1aaf | 5312 | if (seqid == NULL) |
9b073574 | 5313 | goto out; |
cd3758e3 | 5314 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5315 | status = PTR_ERR(task); |
5316 | if (IS_ERR(task)) | |
9b073574 | 5317 | goto out; |
a5d16a4d | 5318 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5319 | rpc_put_task(task); |
9b073574 | 5320 | out: |
536ff0f8 | 5321 | request->fl_flags = fl_flags; |
d1b748a5 | 5322 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5323 | return status; |
5324 | } | |
5325 | ||
a5d16a4d TM |
5326 | struct nfs4_lockdata { |
5327 | struct nfs_lock_args arg; | |
5328 | struct nfs_lock_res res; | |
5329 | struct nfs4_lock_state *lsp; | |
5330 | struct nfs_open_context *ctx; | |
5331 | struct file_lock fl; | |
26e976a8 | 5332 | unsigned long timestamp; |
a5d16a4d TM |
5333 | int rpc_status; |
5334 | int cancelled; | |
66179efe | 5335 | struct nfs_server *server; |
a5d16a4d TM |
5336 | }; |
5337 | ||
5338 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5339 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5340 | gfp_t gfp_mask) | |
1da177e4 | 5341 | { |
a5d16a4d TM |
5342 | struct nfs4_lockdata *p; |
5343 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5344 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5345 | |
8535b2be | 5346 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5347 | if (p == NULL) |
5348 | return NULL; | |
5349 | ||
5350 | p->arg.fh = NFS_FH(inode); | |
5351 | p->arg.fl = &p->fl; | |
8535b2be | 5352 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5353 | if (p->arg.open_seqid == NULL) |
5354 | goto out_free; | |
8535b2be | 5355 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5356 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5357 | goto out_free_seqid; |
a5d16a4d | 5358 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5359 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5360 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5361 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5362 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5363 | p->lsp = lsp; |
66179efe | 5364 | p->server = server; |
a5d16a4d TM |
5365 | atomic_inc(&lsp->ls_count); |
5366 | p->ctx = get_nfs_open_context(ctx); | |
5367 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5368 | return p; | |
2f74c0a0 TM |
5369 | out_free_seqid: |
5370 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5371 | out_free: |
5372 | kfree(p); | |
5373 | return NULL; | |
5374 | } | |
5375 | ||
5376 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5377 | { | |
5378 | struct nfs4_lockdata *data = calldata; | |
5379 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5380 | |
3110ff80 | 5381 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5382 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5383 | goto out_wait; |
a5d16a4d TM |
5384 | /* Do we need to do an open_to_lock_owner? */ |
5385 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5386 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5387 | goto out_release_lock_seqid; |
8fe72bac | 5388 | } |
8e472f33 | 5389 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5390 | data->arg.new_lock_owner = 1; |
c1d51931 | 5391 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5392 | } else |
5393 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5394 | if (!nfs4_valid_open_stateid(state)) { |
5395 | data->rpc_status = -EBADF; | |
5396 | task->tk_action = NULL; | |
5397 | goto out_release_open_seqid; | |
5398 | } | |
26e976a8 | 5399 | data->timestamp = jiffies; |
035168ab TM |
5400 | if (nfs4_setup_sequence(data->server, |
5401 | &data->arg.seq_args, | |
2240a9e2 | 5402 | &data->res.seq_res, |
d9afbd1b | 5403 | task) == 0) |
66179efe | 5404 | return; |
5d422301 | 5405 | out_release_open_seqid: |
2240a9e2 TM |
5406 | nfs_release_seqid(data->arg.open_seqid); |
5407 | out_release_lock_seqid: | |
5408 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5409 | out_wait: |
5410 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5411 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5412 | } |
5413 | ||
a5d16a4d TM |
5414 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5415 | { | |
5416 | struct nfs4_lockdata *data = calldata; | |
5417 | ||
3110ff80 | 5418 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5419 | |
14516c3a TM |
5420 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5421 | return; | |
66179efe | 5422 | |
a5d16a4d | 5423 | data->rpc_status = task->tk_status; |
a5d16a4d | 5424 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5425 | if (data->rpc_status == 0) |
5426 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5427 | else | |
5428 | goto out; | |
5429 | } | |
5430 | if (data->rpc_status == 0) { | |
f597c537 | 5431 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5432 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5433 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5434 | } |
a5d16a4d | 5435 | out: |
3110ff80 | 5436 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5437 | } |
5438 | ||
5439 | static void nfs4_lock_release(void *calldata) | |
5440 | { | |
5441 | struct nfs4_lockdata *data = calldata; | |
5442 | ||
3110ff80 | 5443 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5444 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5445 | if (data->cancelled != 0) { |
5446 | struct rpc_task *task; | |
5447 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5448 | data->arg.lock_seqid); | |
5449 | if (!IS_ERR(task)) | |
bf294b41 | 5450 | rpc_put_task_async(task); |
3110ff80 | 5451 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5452 | } else |
5453 | nfs_free_seqid(data->arg.lock_seqid); | |
5454 | nfs4_put_lock_state(data->lsp); | |
5455 | put_nfs_open_context(data->ctx); | |
5456 | kfree(data); | |
3110ff80 | 5457 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5458 | } |
5459 | ||
5460 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5461 | .rpc_call_prepare = nfs4_lock_prepare, | |
5462 | .rpc_call_done = nfs4_lock_done, | |
5463 | .rpc_release = nfs4_lock_release, | |
5464 | }; | |
5465 | ||
2bee72a6 TM |
5466 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5467 | { | |
2bee72a6 TM |
5468 | switch (error) { |
5469 | case -NFS4ERR_ADMIN_REVOKED: | |
5470 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5471 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5472 | if (new_lock_owner != 0 || |
795a88c9 | 5473 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5474 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5475 | break; |
5476 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5477 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5478 | case -NFS4ERR_EXPIRED: |
5479 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5480 | }; |
5481 | } | |
5482 | ||
afe6c27c | 5483 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5484 | { |
5485 | struct nfs4_lockdata *data; | |
5486 | struct rpc_task *task; | |
5138fde0 TM |
5487 | struct rpc_message msg = { |
5488 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5489 | .rpc_cred = state->owner->so_cred, | |
5490 | }; | |
c970aa85 TM |
5491 | struct rpc_task_setup task_setup_data = { |
5492 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5493 | .rpc_message = &msg, |
c970aa85 | 5494 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5495 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5496 | .flags = RPC_TASK_ASYNC, |
5497 | }; | |
a5d16a4d TM |
5498 | int ret; |
5499 | ||
3110ff80 | 5500 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5501 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5502 | fl->fl_u.nfs4_fl.owner, |
5503 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5504 | if (data == NULL) |
5505 | return -ENOMEM; | |
5506 | if (IS_SETLKW(cmd)) | |
5507 | data->arg.block = 1; | |
a9c92d6b | 5508 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5509 | msg.rpc_argp = &data->arg; |
5510 | msg.rpc_resp = &data->res; | |
c970aa85 | 5511 | task_setup_data.callback_data = data; |
8fe72bac TM |
5512 | if (recovery_type > NFS_LOCK_NEW) { |
5513 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5514 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5515 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5516 | } | |
c970aa85 | 5517 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5518 | if (IS_ERR(task)) |
a5d16a4d | 5519 | return PTR_ERR(task); |
a5d16a4d TM |
5520 | ret = nfs4_wait_for_completion_rpc_task(task); |
5521 | if (ret == 0) { | |
5522 | ret = data->rpc_status; | |
2bee72a6 TM |
5523 | if (ret) |
5524 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5525 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5526 | } else |
5527 | data->cancelled = 1; | |
e6b3c4db | 5528 | rpc_put_task(task); |
3110ff80 | 5529 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5530 | return ret; |
1da177e4 LT |
5531 | } |
5532 | ||
5533 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5534 | { | |
202b50dc | 5535 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5536 | struct nfs4_exception exception = { |
5537 | .inode = state->inode, | |
5538 | }; | |
202b50dc TM |
5539 | int err; |
5540 | ||
5541 | do { | |
42a2d13e TM |
5542 | /* Cache the lock if possible... */ |
5543 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5544 | return 0; | |
afe6c27c | 5545 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5546 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5547 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5548 | break; |
5549 | nfs4_handle_exception(server, err, &exception); | |
5550 | } while (exception.retry); | |
5551 | return err; | |
1da177e4 LT |
5552 | } |
5553 | ||
5554 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5555 | { | |
202b50dc | 5556 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5557 | struct nfs4_exception exception = { |
5558 | .inode = state->inode, | |
5559 | }; | |
202b50dc TM |
5560 | int err; |
5561 | ||
6bfc93ef TM |
5562 | err = nfs4_set_lock_state(state, request); |
5563 | if (err != 0) | |
5564 | return err; | |
f6de7a39 | 5565 | if (!recover_lost_locks) { |
ef1820f9 N |
5566 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5567 | return 0; | |
5568 | } | |
202b50dc | 5569 | do { |
42a2d13e TM |
5570 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5571 | return 0; | |
afe6c27c | 5572 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5573 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5574 | switch (err) { |
5575 | default: | |
5576 | goto out; | |
5577 | case -NFS4ERR_GRACE: | |
5578 | case -NFS4ERR_DELAY: | |
5579 | nfs4_handle_exception(server, err, &exception); | |
5580 | err = 0; | |
5581 | } | |
202b50dc | 5582 | } while (exception.retry); |
a9ed2e25 | 5583 | out: |
202b50dc | 5584 | return err; |
1da177e4 LT |
5585 | } |
5586 | ||
f062eb6c | 5587 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5588 | /** |
5589 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5590 | * | |
5591 | * @state: NFSv4 state for an inode | |
5592 | * | |
5593 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5594 | * Otherwise a negative NFS4ERR value is returned. | |
5595 | */ | |
b01dd1d8 | 5596 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5597 | { |
eb64cf96 | 5598 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5599 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5600 | struct nfs_server *server = NFS_SERVER(state->inode); |
5601 | ||
b01dd1d8 | 5602 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5603 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5604 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5605 | ||
5606 | status = nfs41_test_stateid(server, | |
5607 | &lsp->ls_stateid, | |
5608 | cred); | |
08cb47fa | 5609 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5610 | if (status != NFS_OK) { |
3e60ffdd CL |
5611 | /* Free the stateid unless the server |
5612 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5613 | if (status != -NFS4ERR_BAD_STATEID) |
5614 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5615 | &lsp->ls_stateid, |
5616 | cred); | |
795a88c9 | 5617 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5618 | ret = status; |
5619 | } | |
5620 | } | |
5621 | }; | |
5622 | ||
5623 | return ret; | |
5624 | } | |
5625 | ||
5626 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5627 | { | |
5628 | int status = NFS_OK; | |
5629 | ||
5630 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5631 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5632 | if (status != NFS_OK) |
5633 | status = nfs4_lock_expired(state, request); | |
5634 | return status; | |
f062eb6c BS |
5635 | } |
5636 | #endif | |
5637 | ||
1da177e4 LT |
5638 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5639 | { | |
9a99af49 | 5640 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5641 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5642 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5643 | unsigned int seq; |
8e469ebd | 5644 | int status = -ENOLCK; |
1da177e4 | 5645 | |
8e469ebd TM |
5646 | if ((fl_flags & FL_POSIX) && |
5647 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5648 | goto out; | |
6bfc93ef | 5649 | /* Is this a delegated open? */ |
6bfc93ef TM |
5650 | status = nfs4_set_lock_state(state, request); |
5651 | if (status != 0) | |
5652 | goto out; | |
01c3b861 TM |
5653 | request->fl_flags |= FL_ACCESS; |
5654 | status = do_vfs_lock(request->fl_file, request); | |
5655 | if (status < 0) | |
5656 | goto out; | |
19e03c57 | 5657 | down_read(&nfsi->rwsem); |
01c3b861 | 5658 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5659 | /* Yes: cache locks! */ |
01c3b861 | 5660 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5661 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5662 | status = do_vfs_lock(request->fl_file, request); | |
5663 | goto out_unlock; | |
01c3b861 | 5664 | } |
9a99af49 TM |
5665 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5666 | up_read(&nfsi->rwsem); | |
afe6c27c | 5667 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5668 | if (status != 0) |
9a99af49 TM |
5669 | goto out; |
5670 | down_read(&nfsi->rwsem); | |
5671 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5672 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5673 | goto out_unlock; |
9a99af49 | 5674 | } |
6bfc93ef | 5675 | /* Note: we always want to sleep here! */ |
01c3b861 | 5676 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5677 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5678 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5679 | "manager!\n", __func__); | |
01c3b861 | 5680 | out_unlock: |
19e03c57 | 5681 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5682 | out: |
5683 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5684 | return status; |
5685 | } | |
5686 | ||
5687 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5688 | { | |
a1d0b5ee TM |
5689 | struct nfs4_exception exception = { |
5690 | .state = state, | |
05ffe24f | 5691 | .inode = state->inode, |
a1d0b5ee | 5692 | }; |
1da177e4 LT |
5693 | int err; |
5694 | ||
5695 | do { | |
965b5d67 | 5696 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5697 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5698 | if (err == -NFS4ERR_DENIED) |
5699 | err = -EAGAIN; | |
1da177e4 | 5700 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5701 | err, &exception); |
1da177e4 LT |
5702 | } while (exception.retry); |
5703 | return err; | |
5704 | } | |
5705 | ||
5706 | static int | |
5707 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5708 | { | |
5709 | struct nfs_open_context *ctx; | |
5710 | struct nfs4_state *state; | |
5711 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5712 | int status; | |
5713 | ||
5714 | /* verify open state */ | |
cd3758e3 | 5715 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5716 | state = ctx->state; |
5717 | ||
5718 | if (request->fl_start < 0 || request->fl_end < 0) | |
5719 | return -EINVAL; | |
5720 | ||
d953126a TM |
5721 | if (IS_GETLK(cmd)) { |
5722 | if (state != NULL) | |
5723 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5724 | return 0; | |
5725 | } | |
1da177e4 LT |
5726 | |
5727 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5728 | return -EINVAL; | |
5729 | ||
d953126a TM |
5730 | if (request->fl_type == F_UNLCK) { |
5731 | if (state != NULL) | |
5732 | return nfs4_proc_unlck(state, cmd, request); | |
5733 | return 0; | |
5734 | } | |
1da177e4 | 5735 | |
d953126a TM |
5736 | if (state == NULL) |
5737 | return -ENOLCK; | |
55725513 TM |
5738 | /* |
5739 | * Don't rely on the VFS having checked the file open mode, | |
5740 | * since it won't do this for flock() locks. | |
5741 | */ | |
f44106e2 | 5742 | switch (request->fl_type) { |
55725513 TM |
5743 | case F_RDLCK: |
5744 | if (!(filp->f_mode & FMODE_READ)) | |
5745 | return -EBADF; | |
5746 | break; | |
5747 | case F_WRLCK: | |
5748 | if (!(filp->f_mode & FMODE_WRITE)) | |
5749 | return -EBADF; | |
5750 | } | |
5751 | ||
1da177e4 LT |
5752 | do { |
5753 | status = nfs4_proc_setlk(state, cmd, request); | |
5754 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5755 | break; | |
5756 | timeout = nfs4_set_lock_task_retry(timeout); | |
5757 | status = -ERESTARTSYS; | |
5758 | if (signalled()) | |
5759 | break; | |
5760 | } while(status < 0); | |
1da177e4 LT |
5761 | return status; |
5762 | } | |
5763 | ||
db4f2e63 | 5764 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5765 | { |
5766 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5767 | int err; |
5768 | ||
5769 | err = nfs4_set_lock_state(state, fl); | |
5770 | if (err != 0) | |
db4f2e63 | 5771 | return err; |
4a706fa0 | 5772 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5773 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5774 | } |
6b3b5496 | 5775 | |
cf470c3e TM |
5776 | struct nfs_release_lockowner_data { |
5777 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5778 | struct nfs_server *server; |
cf470c3e | 5779 | struct nfs_release_lockowner_args args; |
fbd4bfd1 CL |
5780 | struct nfs4_sequence_args seq_args; |
5781 | struct nfs4_sequence_res seq_res; | |
cf470c3e TM |
5782 | }; |
5783 | ||
fbd4bfd1 CL |
5784 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
5785 | { | |
5786 | struct nfs_release_lockowner_data *data = calldata; | |
5787 | nfs40_setup_sequence(data->server, | |
5788 | &data->seq_args, &data->seq_res, task); | |
5789 | } | |
5790 | ||
5791 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
5792 | { | |
5793 | struct nfs_release_lockowner_data *data = calldata; | |
5794 | nfs40_sequence_done(task, &data->seq_res); | |
5795 | } | |
5796 | ||
d3c7b7cc TM |
5797 | static void nfs4_release_lockowner_release(void *calldata) |
5798 | { | |
cf470c3e | 5799 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5800 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5801 | kfree(calldata); |
5802 | } | |
5803 | ||
17280175 | 5804 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
5805 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
5806 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
5807 | .rpc_release = nfs4_release_lockowner_release, |
5808 | }; | |
5809 | ||
c8b2d0bf | 5810 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5811 | { |
cf470c3e | 5812 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5813 | struct rpc_message msg = { |
5814 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5815 | }; | |
5816 | ||
5817 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e | 5818 | return -EINVAL; |
fbd4bfd1 | 5819 | |
cf470c3e TM |
5820 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5821 | if (!data) | |
5822 | return -ENOMEM; | |
fbd4bfd1 | 5823 | nfs4_init_sequence(&data->seq_args, &data->seq_res, 0); |
cf470c3e | 5824 | data->lsp = lsp; |
5ae67c4f | 5825 | data->server = server; |
cf470c3e TM |
5826 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5827 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5828 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 5829 | |
cf470c3e TM |
5830 | msg.rpc_argp = &data->args; |
5831 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5832 | return 0; | |
d3c7b7cc TM |
5833 | } |
5834 | ||
aa1870af BF |
5835 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5836 | ||
64c2ce8b AK |
5837 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5838 | const void *buf, size_t buflen, | |
5839 | int flags, int type) | |
6b3b5496 | 5840 | { |
64c2ce8b AK |
5841 | if (strcmp(key, "") != 0) |
5842 | return -EINVAL; | |
4b580ee3 | 5843 | |
64c2ce8b | 5844 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5845 | } |
5846 | ||
64c2ce8b AK |
5847 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5848 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5849 | { |
64c2ce8b AK |
5850 | if (strcmp(key, "") != 0) |
5851 | return -EINVAL; | |
aa1870af | 5852 | |
64c2ce8b | 5853 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5854 | } |
5855 | ||
64c2ce8b AK |
5856 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5857 | size_t list_len, const char *name, | |
5858 | size_t name_len, int type) | |
6b3b5496 | 5859 | { |
64c2ce8b | 5860 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5861 | |
096455a2 BF |
5862 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5863 | return 0; | |
64c2ce8b AK |
5864 | |
5865 | if (list && len <= list_len) | |
5866 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5867 | return len; |
6b3b5496 BF |
5868 | } |
5869 | ||
c9bccef6 DQ |
5870 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5871 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5872 | { | |
5873 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5874 | } | |
5875 | ||
5876 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5877 | const void *buf, size_t buflen, | |
5878 | int flags, int type) | |
5879 | { | |
5880 | if (security_ismaclabel(key)) | |
5881 | return nfs4_set_security_label(dentry, buf, buflen); | |
5882 | ||
5883 | return -EOPNOTSUPP; | |
5884 | } | |
5885 | ||
5886 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5887 | void *buf, size_t buflen, int type) | |
5888 | { | |
5889 | if (security_ismaclabel(key)) | |
5890 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5891 | return -EOPNOTSUPP; | |
5892 | } | |
5893 | ||
5894 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5895 | size_t list_len, const char *name, | |
5896 | size_t name_len, int type) | |
5897 | { | |
5898 | size_t len = 0; | |
5899 | ||
5900 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5901 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5902 | if (list && len <= list_len) | |
5903 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5904 | } | |
5905 | return len; | |
5906 | } | |
5907 | ||
5908 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5909 | .prefix = XATTR_SECURITY_PREFIX, | |
5910 | .list = nfs4_xattr_list_nfs4_label, | |
5911 | .get = nfs4_xattr_get_nfs4_label, | |
5912 | .set = nfs4_xattr_set_nfs4_label, | |
5913 | }; | |
5914 | #endif | |
5915 | ||
5916 | ||
533eb461 AA |
5917 | /* |
5918 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5919 | */ | |
69aaaae1 TM |
5920 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5921 | { | |
533eb461 AA |
5922 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5923 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5924 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5925 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5926 | return; |
5927 | ||
5928 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5929 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5930 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5931 | fattr->nlink = 2; | |
5932 | } | |
5933 | ||
f05d147f BS |
5934 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5935 | const struct qstr *name, | |
5936 | struct nfs4_fs_locations *fs_locations, | |
5937 | struct page *page) | |
683b57b4 TM |
5938 | { |
5939 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5940 | u32 bitmask[3] = { |
361e624f | 5941 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5942 | }; |
5943 | struct nfs4_fs_locations_arg args = { | |
5944 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5945 | .name = name, |
683b57b4 TM |
5946 | .page = page, |
5947 | .bitmask = bitmask, | |
5948 | }; | |
22958463 BH |
5949 | struct nfs4_fs_locations_res res = { |
5950 | .fs_locations = fs_locations, | |
5951 | }; | |
683b57b4 TM |
5952 | struct rpc_message msg = { |
5953 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5954 | .rpc_argp = &args, | |
22958463 | 5955 | .rpc_resp = &res, |
683b57b4 TM |
5956 | }; |
5957 | int status; | |
5958 | ||
3110ff80 | 5959 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5960 | |
5961 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5962 | * is not supported */ | |
5963 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5964 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5965 | else | |
5966 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5967 | ||
c228fd3a | 5968 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5969 | fs_locations->server = server; |
830b8e33 | 5970 | fs_locations->nlocations = 0; |
f05d147f | 5971 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5972 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5973 | return status; |
5974 | } | |
5975 | ||
f05d147f BS |
5976 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5977 | const struct qstr *name, | |
5978 | struct nfs4_fs_locations *fs_locations, | |
5979 | struct page *page) | |
db0a9593 BS |
5980 | { |
5981 | struct nfs4_exception exception = { }; | |
5982 | int err; | |
5983 | do { | |
078ea3df TM |
5984 | err = _nfs4_proc_fs_locations(client, dir, name, |
5985 | fs_locations, page); | |
5986 | trace_nfs4_get_fs_locations(dir, name, err); | |
5987 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
5988 | &exception); |
5989 | } while (exception.retry); | |
5990 | return err; | |
5991 | } | |
5992 | ||
5ec16a85 | 5993 | /** |
a5250def WAA |
5994 | * If 'use_integrity' is true and the state managment nfs_client |
5995 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
5996 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
5997 | * Considerations sections. Otherwise, just use the user cred with the | |
5998 | * filesystem's rpc_client. | |
5ec16a85 | 5999 | */ |
a5250def | 6000 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6001 | { |
6002 | int status; | |
6003 | struct nfs4_secinfo_arg args = { | |
6004 | .dir_fh = NFS_FH(dir), | |
6005 | .name = name, | |
6006 | }; | |
6007 | struct nfs4_secinfo_res res = { | |
6008 | .flavors = flavors, | |
6009 | }; | |
6010 | struct rpc_message msg = { | |
6011 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6012 | .rpc_argp = &args, | |
6013 | .rpc_resp = &res, | |
6014 | }; | |
a5250def | 6015 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6016 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6017 | |
6018 | if (use_integrity) { | |
6019 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6020 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6021 | msg.rpc_cred = cred; | |
a5250def | 6022 | } |
5a5ea0d4 BS |
6023 | |
6024 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6025 | |
6026 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6027 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6028 | ||
a5250def WAA |
6029 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6030 | &res.seq_res, 0); | |
5a5ea0d4 | 6031 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6032 | |
7cb852df WAA |
6033 | if (cred) |
6034 | put_rpccred(cred); | |
a5250def | 6035 | |
5a5ea0d4 BS |
6036 | return status; |
6037 | } | |
6038 | ||
72de53ec BS |
6039 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6040 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6041 | { |
6042 | struct nfs4_exception exception = { }; | |
6043 | int err; | |
6044 | do { | |
a5250def WAA |
6045 | err = -NFS4ERR_WRONGSEC; |
6046 | ||
6047 | /* try to use integrity protection with machine cred */ | |
6048 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6049 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6050 | ||
6051 | /* | |
6052 | * if unable to use integrity protection, or SECINFO with | |
6053 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6054 | * disallowed by spec, but exists in deployed servers) use | |
6055 | * the current filesystem's rpc_client and the user cred. | |
6056 | */ | |
6057 | if (err == -NFS4ERR_WRONGSEC) | |
6058 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6059 | ||
078ea3df TM |
6060 | trace_nfs4_secinfo(dir, name, err); |
6061 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6062 | &exception); |
6063 | } while (exception.retry); | |
6064 | return err; | |
6065 | } | |
6066 | ||
557134a3 | 6067 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6068 | /* |
6069 | * Check the exchange flags returned by the server for invalid flags, having | |
6070 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6071 | * DS flags set. | |
6072 | */ | |
6073 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6074 | { | |
6075 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6076 | goto out_inval; | |
6077 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6078 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6079 | goto out_inval; | |
6080 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6081 | goto out_inval; | |
6082 | return NFS_OK; | |
6083 | out_inval: | |
6084 | return -NFS4ERR_INVAL; | |
6085 | } | |
6086 | ||
78fe0f41 | 6087 | static bool |
79d4e1f0 CL |
6088 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6089 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6090 | { |
6091 | if (a->server_scope_sz == b->server_scope_sz && | |
6092 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6093 | return true; | |
6094 | ||
6095 | return false; | |
6096 | } | |
6097 | ||
7c44f1ae WAA |
6098 | /* |
6099 | * nfs4_proc_bind_conn_to_session() | |
6100 | * | |
6101 | * The 4.1 client currently uses the same TCP connection for the | |
6102 | * fore and backchannel. | |
6103 | */ | |
2cf047c9 | 6104 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6105 | { |
6106 | int status; | |
6107 | struct nfs41_bind_conn_to_session_res res; | |
6108 | struct rpc_message msg = { | |
6109 | .rpc_proc = | |
6110 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6111 | .rpc_argp = clp, | |
6112 | .rpc_resp = &res, | |
2cf047c9 | 6113 | .rpc_cred = cred, |
7c44f1ae WAA |
6114 | }; |
6115 | ||
6116 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6117 | |
6118 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6119 | if (unlikely(res.session == NULL)) { | |
6120 | status = -ENOMEM; | |
6121 | goto out; | |
6122 | } | |
6123 | ||
6124 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6125 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6126 | if (status == 0) { |
6127 | if (memcmp(res.session->sess_id.data, | |
6128 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6129 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6130 | status = -EIO; | |
6131 | goto out_session; | |
6132 | } | |
6133 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6134 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6135 | __func__); | |
6136 | status = -EIO; | |
6137 | goto out_session; | |
6138 | } | |
6139 | if (res.use_conn_in_rdma_mode) { | |
6140 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6141 | __func__); | |
6142 | status = -EIO; | |
6143 | goto out_session; | |
6144 | } | |
6145 | } | |
6146 | out_session: | |
6147 | kfree(res.session); | |
6148 | out: | |
6149 | dprintk("<-- %s status= %d\n", __func__, status); | |
6150 | return status; | |
6151 | } | |
6152 | ||
99fe60d0 | 6153 | /* |
fa940720 WAA |
6154 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6155 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6156 | */ |
6157 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6158 | .how = SP4_MACH_CRED, | |
6159 | .enforce.u.words = { | |
6160 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6161 | 1 << (OP_EXCHANGE_ID - 32) | | |
6162 | 1 << (OP_CREATE_SESSION - 32) | | |
6163 | 1 << (OP_DESTROY_SESSION - 32) | | |
6164 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6165 | }, |
6166 | .allow.u.words = { | |
6167 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6168 | 1 << (OP_LOCKU) | |
6169 | 1 << (OP_COMMIT), | |
8b5bee2e | 6170 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6171 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6172 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6173 | 1 << (OP_FREE_STATEID - 32) | |
6174 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6175 | } |
6176 | }; | |
6177 | ||
6178 | /* | |
6179 | * Select the state protection mode for client `clp' given the server results | |
6180 | * from exchange_id in `sp'. | |
99fe60d0 | 6181 | * |
2031cd1a WAA |
6182 | * Returns 0 on success, negative errno otherwise. |
6183 | */ | |
6184 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6185 | struct nfs41_state_protection *sp) | |
6186 | { | |
6187 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6188 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6189 | 1 << (OP_EXCHANGE_ID - 32) | | |
6190 | 1 << (OP_CREATE_SESSION - 32) | | |
6191 | 1 << (OP_DESTROY_SESSION - 32) | | |
6192 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6193 | }; | |
6194 | unsigned int i; | |
6195 | ||
6196 | if (sp->how == SP4_MACH_CRED) { | |
6197 | /* Print state protect result */ | |
6198 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6199 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6200 | if (test_bit(i, sp->enforce.u.longs)) | |
6201 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6202 | if (test_bit(i, sp->allow.u.longs)) | |
6203 | dfprintk(MOUNT, " allow op %d\n", i); | |
6204 | } | |
6205 | ||
6206 | /* make sure nothing is on enforce list that isn't supported */ | |
6207 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6208 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6209 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6210 | return -EINVAL; | |
6211 | } | |
6212 | } | |
6213 | ||
6214 | /* | |
6215 | * Minimal mode - state operations are allowed to use machine | |
6216 | * credential. Note this already happens by default, so the | |
6217 | * client doesn't have to do anything more than the negotiation. | |
6218 | * | |
6219 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6220 | * we're already using the machine cred for exchange_id | |
6221 | * and will never use a different cred. | |
6222 | */ | |
6223 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6224 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6225 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6226 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6227 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6228 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6229 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6230 | } else { | |
6231 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6232 | return -EINVAL; | |
6233 | } | |
fa940720 WAA |
6234 | |
6235 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6236 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6237 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6238 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6239 | } | |
8b5bee2e WAA |
6240 | |
6241 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6242 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6243 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6244 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6245 | } | |
3787d506 WAA |
6246 | |
6247 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6248 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6249 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6250 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6251 | } | |
8c21c62c WAA |
6252 | |
6253 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6254 | dfprintk(MOUNT, " write mode enabled\n"); | |
6255 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6256 | } | |
6257 | ||
6258 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6259 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6260 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6261 | } | |
2031cd1a WAA |
6262 | } |
6263 | ||
6264 | return 0; | |
6265 | } | |
6266 | ||
6267 | /* | |
6268 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6269 | * |
2031cd1a | 6270 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6271 | */ |
2031cd1a WAA |
6272 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6273 | u32 sp4_how) | |
99fe60d0 BH |
6274 | { |
6275 | nfs4_verifier verifier; | |
6276 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6277 | .verifier = &verifier, |
99fe60d0 | 6278 | .client = clp, |
4f0b429d TM |
6279 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
6280 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
6281 | }; |
6282 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6283 | 0 |
99fe60d0 BH |
6284 | }; |
6285 | int status; | |
6286 | struct rpc_message msg = { | |
6287 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6288 | .rpc_argp = &args, | |
6289 | .rpc_resp = &res, | |
6290 | .rpc_cred = cred, | |
6291 | }; | |
99fe60d0 | 6292 | |
f092075d | 6293 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6294 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6295 | sizeof(args.id)); | |
6bbb4ae8 CL |
6296 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6297 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6298 | args.id_len, args.id); | |
99fe60d0 | 6299 | |
acdeb69d | 6300 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6301 | GFP_NOFS); |
acdeb69d | 6302 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6303 | status = -ENOMEM; |
6304 | goto out; | |
6305 | } | |
78fe0f41 | 6306 | |
79d4e1f0 | 6307 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6308 | GFP_NOFS); |
177313f1 | 6309 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6310 | status = -ENOMEM; |
acdeb69d | 6311 | goto out_server_owner; |
abe9a6d5 | 6312 | } |
78fe0f41 | 6313 | |
bbafffd2 | 6314 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6315 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6316 | status = -ENOMEM; |
6317 | goto out_server_scope; | |
6318 | } | |
6319 | ||
2031cd1a WAA |
6320 | switch (sp4_how) { |
6321 | case SP4_NONE: | |
6322 | args.state_protect.how = SP4_NONE; | |
6323 | break; | |
6324 | ||
6325 | case SP4_MACH_CRED: | |
6326 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6327 | break; | |
6328 | ||
6329 | default: | |
6330 | /* unsupported! */ | |
6331 | WARN_ON_ONCE(1); | |
6332 | status = -EINVAL; | |
6333 | goto out_server_scope; | |
6334 | } | |
6335 | ||
1bd714f2 | 6336 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6337 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6338 | if (status == 0) |
32b01310 | 6339 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6340 | |
2031cd1a WAA |
6341 | if (status == 0) |
6342 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6343 | ||
acdeb69d | 6344 | if (status == 0) { |
32b01310 TM |
6345 | clp->cl_clientid = res.clientid; |
6346 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6347 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6348 | clp->cl_seqid = res.seqid; | |
6349 | ||
acdeb69d CL |
6350 | kfree(clp->cl_serverowner); |
6351 | clp->cl_serverowner = res.server_owner; | |
6352 | res.server_owner = NULL; | |
78fe0f41 | 6353 | |
7d2ed9ac | 6354 | /* use the most recent implementation id */ |
59155546 CL |
6355 | kfree(clp->cl_implid); |
6356 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6357 | |
177313f1 | 6358 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6359 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6360 | res.server_scope)) { |
6361 | dprintk("%s: server_scope mismatch detected\n", | |
6362 | __func__); | |
6363 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6364 | kfree(clp->cl_serverscope); |
6365 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6366 | } |
6367 | ||
177313f1 | 6368 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6369 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6370 | goto out; |
6371 | } | |
32b01310 TM |
6372 | } else |
6373 | kfree(res.impl_id); | |
7d2ed9ac | 6374 | |
acdeb69d CL |
6375 | out_server_owner: |
6376 | kfree(res.server_owner); | |
7d2ed9ac | 6377 | out_server_scope: |
abe9a6d5 WAA |
6378 | kfree(res.server_scope); |
6379 | out: | |
177313f1 | 6380 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6381 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6382 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6383 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6384 | clp->cl_implid->date.seconds, |
6385 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6386 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6387 | return status; |
6388 | } | |
6389 | ||
2031cd1a WAA |
6390 | /* |
6391 | * nfs4_proc_exchange_id() | |
6392 | * | |
6393 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6394 | * | |
6395 | * Since the clientid has expired, all compounds using sessions | |
6396 | * associated with the stale clientid will be returning | |
6397 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6398 | * be in some phase of session reset. | |
6399 | * | |
6400 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
6401 | */ | |
6402 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
6403 | { | |
6404 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
6405 | int status; | |
6406 | ||
6407 | /* try SP4_MACH_CRED if krb5i/p */ | |
6408 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
6409 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
6410 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
6411 | if (!status) | |
6412 | return 0; | |
6413 | } | |
6414 | ||
6415 | /* try SP4_NONE */ | |
6416 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
6417 | } | |
6418 | ||
66245539 TM |
6419 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6420 | struct rpc_cred *cred) | |
6421 | { | |
6422 | struct rpc_message msg = { | |
6423 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6424 | .rpc_argp = clp, | |
6425 | .rpc_cred = cred, | |
6426 | }; | |
6427 | int status; | |
6428 | ||
6429 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6430 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6431 | if (status) |
02c67525 | 6432 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6433 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6434 | return status; | |
6435 | } | |
6436 | ||
6437 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6438 | struct rpc_cred *cred) | |
6439 | { | |
6440 | unsigned int loop; | |
6441 | int ret; | |
6442 | ||
6443 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6444 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6445 | switch (ret) { | |
6446 | case -NFS4ERR_DELAY: | |
6447 | case -NFS4ERR_CLIENTID_BUSY: | |
6448 | ssleep(1); | |
6449 | break; | |
6450 | default: | |
6451 | return ret; | |
6452 | } | |
6453 | } | |
6454 | return 0; | |
6455 | } | |
6456 | ||
6457 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6458 | { | |
6459 | struct rpc_cred *cred; | |
6460 | int ret = 0; | |
6461 | ||
6462 | if (clp->cl_mvops->minor_version < 1) | |
6463 | goto out; | |
6464 | if (clp->cl_exchange_flags == 0) | |
6465 | goto out; | |
05f4c350 CL |
6466 | if (clp->cl_preserve_clid) |
6467 | goto out; | |
73d8bde5 | 6468 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6469 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6470 | if (cred) | |
6471 | put_rpccred(cred); | |
6472 | switch (ret) { | |
6473 | case 0: | |
6474 | case -NFS4ERR_STALE_CLIENTID: | |
6475 | clp->cl_exchange_flags = 0; | |
6476 | } | |
6477 | out: | |
6478 | return ret; | |
6479 | } | |
6480 | ||
2050f0cc AA |
6481 | struct nfs4_get_lease_time_data { |
6482 | struct nfs4_get_lease_time_args *args; | |
6483 | struct nfs4_get_lease_time_res *res; | |
6484 | struct nfs_client *clp; | |
6485 | }; | |
6486 | ||
6487 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6488 | void *calldata) | |
6489 | { | |
2050f0cc AA |
6490 | struct nfs4_get_lease_time_data *data = |
6491 | (struct nfs4_get_lease_time_data *)calldata; | |
6492 | ||
6493 | dprintk("--> %s\n", __func__); | |
6494 | /* just setup sequence, do not trigger session recovery | |
6495 | since we're invoked within one */ | |
d9afbd1b TM |
6496 | nfs41_setup_sequence(data->clp->cl_session, |
6497 | &data->args->la_seq_args, | |
6498 | &data->res->lr_seq_res, | |
6499 | task); | |
2050f0cc AA |
6500 | dprintk("<-- %s\n", __func__); |
6501 | } | |
6502 | ||
6503 | /* | |
6504 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6505 | * from sequence operation or clientid errors. | |
6506 | */ | |
6507 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6508 | { | |
6509 | struct nfs4_get_lease_time_data *data = | |
6510 | (struct nfs4_get_lease_time_data *)calldata; | |
6511 | ||
6512 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6513 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6514 | return; | |
2050f0cc AA |
6515 | switch (task->tk_status) { |
6516 | case -NFS4ERR_DELAY: | |
6517 | case -NFS4ERR_GRACE: | |
6518 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6519 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6520 | task->tk_status = 0; | |
a8a4ae3a AA |
6521 | /* fall through */ |
6522 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6523 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6524 | return; |
6525 | } | |
2050f0cc AA |
6526 | dprintk("<-- %s\n", __func__); |
6527 | } | |
6528 | ||
17280175 | 6529 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6530 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6531 | .rpc_call_done = nfs4_get_lease_time_done, | |
6532 | }; | |
6533 | ||
6534 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6535 | { | |
6536 | struct rpc_task *task; | |
6537 | struct nfs4_get_lease_time_args args; | |
6538 | struct nfs4_get_lease_time_res res = { | |
6539 | .lr_fsinfo = fsinfo, | |
6540 | }; | |
6541 | struct nfs4_get_lease_time_data data = { | |
6542 | .args = &args, | |
6543 | .res = &res, | |
6544 | .clp = clp, | |
6545 | }; | |
6546 | struct rpc_message msg = { | |
6547 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6548 | .rpc_argp = &args, | |
6549 | .rpc_resp = &res, | |
6550 | }; | |
6551 | struct rpc_task_setup task_setup = { | |
6552 | .rpc_client = clp->cl_rpcclient, | |
6553 | .rpc_message = &msg, | |
6554 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6555 | .callback_data = &data, |
6556 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6557 | }; |
6558 | int status; | |
6559 | ||
a9c92d6b | 6560 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6561 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6562 | dprintk("--> %s\n", __func__); |
6563 | task = rpc_run_task(&task_setup); | |
6564 | ||
6565 | if (IS_ERR(task)) | |
6566 | status = PTR_ERR(task); | |
6567 | else { | |
6568 | status = task->tk_status; | |
6569 | rpc_put_task(task); | |
6570 | } | |
6571 | dprintk("<-- %s return %d\n", __func__, status); | |
6572 | ||
6573 | return status; | |
6574 | } | |
6575 | ||
fc931582 AA |
6576 | /* |
6577 | * Initialize the values to be used by the client in CREATE_SESSION | |
6578 | * If nfs4_init_session set the fore channel request and response sizes, | |
6579 | * use them. | |
6580 | * | |
6581 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6582 | * always set csa_cachethis to FALSE because the current implementation | |
6583 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6584 | */ | |
6585 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6586 | { | |
18aad3d5 AA |
6587 | unsigned int max_rqst_sz, max_resp_sz; |
6588 | ||
6589 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6590 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6591 | |
fc931582 | 6592 | /* Fore channel attributes */ |
18aad3d5 AA |
6593 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6594 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6595 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6596 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6597 | |
6598 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6599 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6600 | __func__, |
6601 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6602 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6603 | |
6604 | /* Back channel attributes */ | |
fc931582 AA |
6605 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6606 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6607 | args->bc_attrs.max_resp_sz_cached = 0; | |
6608 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6609 | args->bc_attrs.max_reqs = 1; | |
6610 | ||
6611 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6612 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6613 | __func__, | |
6614 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6615 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6616 | args->bc_attrs.max_reqs); | |
6617 | } | |
6618 | ||
43c2e885 | 6619 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6620 | { |
43c2e885 BF |
6621 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6622 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6623 | ||
43c2e885 BF |
6624 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6625 | return -EINVAL; | |
6626 | /* | |
6627 | * Our requested max_ops is the minimum we need; we're not | |
6628 | * prepared to break up compounds into smaller pieces than that. | |
6629 | * So, no point even trying to continue if the server won't | |
6630 | * cooperate: | |
6631 | */ | |
6632 | if (rcvd->max_ops < sent->max_ops) | |
6633 | return -EINVAL; | |
6634 | if (rcvd->max_reqs == 0) | |
6635 | return -EINVAL; | |
b4b9a0c1 VG |
6636 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6637 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 6638 | return 0; |
8d35301d AA |
6639 | } |
6640 | ||
43c2e885 BF |
6641 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
6642 | { | |
6643 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
6644 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 6645 | |
43c2e885 BF |
6646 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
6647 | return -EINVAL; | |
6648 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
6649 | return -EINVAL; | |
6650 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
6651 | return -EINVAL; | |
6652 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 6653 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 6654 | return -EINVAL; |
b4b9a0c1 | 6655 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
6656 | return -EINVAL; |
6657 | return 0; | |
6658 | } | |
8d35301d | 6659 | |
8d35301d AA |
6660 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6661 | struct nfs4_session *session) | |
6662 | { | |
43c2e885 | 6663 | int ret; |
8d35301d | 6664 | |
43c2e885 BF |
6665 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6666 | if (ret) | |
6667 | return ret; | |
6668 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6669 | } |
6670 | ||
848f5bda TM |
6671 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6672 | struct rpc_cred *cred) | |
fc931582 AA |
6673 | { |
6674 | struct nfs4_session *session = clp->cl_session; | |
6675 | struct nfs41_create_session_args args = { | |
6676 | .client = clp, | |
6677 | .cb_program = NFS4_CALLBACK, | |
6678 | }; | |
6679 | struct nfs41_create_session_res res = { | |
6680 | .client = clp, | |
6681 | }; | |
6682 | struct rpc_message msg = { | |
6683 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6684 | .rpc_argp = &args, | |
6685 | .rpc_resp = &res, | |
848f5bda | 6686 | .rpc_cred = cred, |
fc931582 AA |
6687 | }; |
6688 | int status; | |
6689 | ||
6690 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6691 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6692 | |
1bd714f2 | 6693 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6694 | trace_nfs4_create_session(clp, status); |
fc931582 | 6695 | |
43095d39 | 6696 | if (!status) { |
8d35301d AA |
6697 | /* Verify the session's negotiated channel_attrs values */ |
6698 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6699 | /* Increment the clientid slot sequence id */ |
6700 | clp->cl_seqid++; | |
6701 | } | |
6702 | ||
6703 | return status; | |
6704 | } | |
6705 | ||
6706 | /* | |
6707 | * Issues a CREATE_SESSION operation to the server. | |
6708 | * It is the responsibility of the caller to verify the session is | |
6709 | * expired before calling this routine. | |
6710 | */ | |
848f5bda | 6711 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6712 | { |
6713 | int status; | |
6714 | unsigned *ptr; | |
fc931582 AA |
6715 | struct nfs4_session *session = clp->cl_session; |
6716 | ||
6717 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6718 | ||
848f5bda | 6719 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6720 | if (status) |
6721 | goto out; | |
6722 | ||
aacd5537 AA |
6723 | /* Init or reset the session slot tables */ |
6724 | status = nfs4_setup_session_slot_tables(session); | |
6725 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6726 | if (status) |
6727 | goto out; | |
6728 | ||
6729 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6730 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6731 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6732 | out: |
6733 | dprintk("<-- %s\n", __func__); | |
6734 | return status; | |
6735 | } | |
6736 | ||
0f3e66c6 AA |
6737 | /* |
6738 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6739 | * The caller must serialize access to this routine. | |
6740 | */ | |
848f5bda TM |
6741 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6742 | struct rpc_cred *cred) | |
0f3e66c6 | 6743 | { |
848f5bda TM |
6744 | struct rpc_message msg = { |
6745 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6746 | .rpc_argp = session, | |
6747 | .rpc_cred = cred, | |
6748 | }; | |
0f3e66c6 | 6749 | int status = 0; |
0f3e66c6 AA |
6750 | |
6751 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6752 | ||
6753 | /* session is still being setup */ | |
6754 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6755 | return status; | |
6756 | ||
1bd714f2 | 6757 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6758 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
6759 | |
6760 | if (status) | |
08106ac7 | 6761 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6762 | "Session has been destroyed regardless...\n", status); |
6763 | ||
6764 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6765 | return status; | |
6766 | } | |
6767 | ||
fc01cea9 AA |
6768 | /* |
6769 | * Renew the cl_session lease. | |
6770 | */ | |
d5f8d3fe TM |
6771 | struct nfs4_sequence_data { |
6772 | struct nfs_client *clp; | |
6773 | struct nfs4_sequence_args args; | |
6774 | struct nfs4_sequence_res res; | |
6775 | }; | |
6776 | ||
dc96aef9 AB |
6777 | static void nfs41_sequence_release(void *data) |
6778 | { | |
d5f8d3fe TM |
6779 | struct nfs4_sequence_data *calldata = data; |
6780 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6781 | |
7135840f AB |
6782 | if (atomic_read(&clp->cl_count) > 1) |
6783 | nfs4_schedule_state_renewal(clp); | |
6784 | nfs_put_client(clp); | |
d5f8d3fe | 6785 | kfree(calldata); |
dc96aef9 AB |
6786 | } |
6787 | ||
aa5190d0 TM |
6788 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6789 | { | |
6790 | switch(task->tk_status) { | |
6791 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6792 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6793 | return -EAGAIN; | |
6794 | default: | |
0400a6b0 | 6795 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6796 | } |
6797 | return 0; | |
6798 | } | |
6799 | ||
dc96aef9 | 6800 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6801 | { |
d5f8d3fe TM |
6802 | struct nfs4_sequence_data *calldata = data; |
6803 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6804 | |
14516c3a TM |
6805 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6806 | return; | |
fc01cea9 | 6807 | |
c6d01c6f | 6808 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
6809 | if (task->tk_status < 0) { |
6810 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6811 | if (atomic_read(&clp->cl_count) == 1) |
6812 | goto out; | |
fc01cea9 | 6813 | |
aa5190d0 TM |
6814 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6815 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6816 | return; |
6817 | } | |
6818 | } | |
fc01cea9 | 6819 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6820 | out: |
fc01cea9 AA |
6821 | dprintk("<-- %s\n", __func__); |
6822 | } | |
6823 | ||
6824 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6825 | { | |
d5f8d3fe TM |
6826 | struct nfs4_sequence_data *calldata = data; |
6827 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6828 | struct nfs4_sequence_args *args; |
6829 | struct nfs4_sequence_res *res; | |
6830 | ||
fc01cea9 AA |
6831 | args = task->tk_msg.rpc_argp; |
6832 | res = task->tk_msg.rpc_resp; | |
6833 | ||
d9afbd1b | 6834 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6835 | } |
6836 | ||
6837 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6838 | .rpc_call_done = nfs41_sequence_call_done, | |
6839 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6840 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6841 | }; |
6842 | ||
8fe72bac TM |
6843 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6844 | struct rpc_cred *cred, | |
6845 | bool is_privileged) | |
fc01cea9 | 6846 | { |
d5f8d3fe | 6847 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6848 | struct rpc_message msg = { |
6849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6850 | .rpc_cred = cred, | |
6851 | }; | |
71ac6da9 TM |
6852 | struct rpc_task_setup task_setup_data = { |
6853 | .rpc_client = clp->cl_rpcclient, | |
6854 | .rpc_message = &msg, | |
8fe72bac | 6855 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6856 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6857 | }; |
fc01cea9 | 6858 | |
7135840f | 6859 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6860 | return ERR_PTR(-EIO); |
dfb4f309 | 6861 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6862 | if (calldata == NULL) { |
7135840f | 6863 | nfs_put_client(clp); |
71ac6da9 | 6864 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6865 | } |
a9c92d6b | 6866 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6867 | if (is_privileged) |
6868 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6869 | msg.rpc_argp = &calldata->args; |
6870 | msg.rpc_resp = &calldata->res; | |
6871 | calldata->clp = clp; | |
71ac6da9 | 6872 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6873 | |
71ac6da9 TM |
6874 | return rpc_run_task(&task_setup_data); |
6875 | } | |
6876 | ||
2f60ea6b | 6877 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6878 | { |
6879 | struct rpc_task *task; | |
6880 | int ret = 0; | |
6881 | ||
2f60ea6b TM |
6882 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6883 | return 0; | |
8fe72bac | 6884 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6885 | if (IS_ERR(task)) |
6886 | ret = PTR_ERR(task); | |
6887 | else | |
bf294b41 | 6888 | rpc_put_task_async(task); |
71ac6da9 TM |
6889 | dprintk("<-- %s status=%d\n", __func__, ret); |
6890 | return ret; | |
6891 | } | |
6892 | ||
6893 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6894 | { | |
6895 | struct rpc_task *task; | |
6896 | int ret; | |
6897 | ||
8fe72bac | 6898 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6899 | if (IS_ERR(task)) { |
6900 | ret = PTR_ERR(task); | |
6901 | goto out; | |
6902 | } | |
6903 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6904 | if (!ret) { |
6905 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6906 | ||
6907 | if (task->tk_status == 0) | |
6908 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6909 | ret = task->tk_status; |
b4410c2f | 6910 | } |
71ac6da9 TM |
6911 | rpc_put_task(task); |
6912 | out: | |
6913 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6914 | return ret; | |
fc01cea9 AA |
6915 | } |
6916 | ||
fce5c838 RL |
6917 | struct nfs4_reclaim_complete_data { |
6918 | struct nfs_client *clp; | |
6919 | struct nfs41_reclaim_complete_args arg; | |
6920 | struct nfs41_reclaim_complete_res res; | |
6921 | }; | |
6922 | ||
6923 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6924 | { | |
6925 | struct nfs4_reclaim_complete_data *calldata = data; | |
6926 | ||
d9afbd1b TM |
6927 | nfs41_setup_sequence(calldata->clp->cl_session, |
6928 | &calldata->arg.seq_args, | |
6929 | &calldata->res.seq_res, | |
6930 | task); | |
fce5c838 RL |
6931 | } |
6932 | ||
aa5190d0 TM |
6933 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6934 | { | |
6935 | switch(task->tk_status) { | |
6936 | case 0: | |
6937 | case -NFS4ERR_COMPLETE_ALREADY: | |
6938 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6939 | break; | |
6940 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6941 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6942 | /* fall through */ |
6943 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6944 | return -EAGAIN; |
6945 | default: | |
0400a6b0 | 6946 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6947 | } |
6948 | return 0; | |
6949 | } | |
6950 | ||
fce5c838 RL |
6951 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6952 | { | |
6953 | struct nfs4_reclaim_complete_data *calldata = data; | |
6954 | struct nfs_client *clp = calldata->clp; | |
6955 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6956 | ||
6957 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6958 | if (!nfs41_sequence_done(task, res)) |
6959 | return; | |
fce5c838 | 6960 | |
c6d01c6f | 6961 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
6962 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6963 | rpc_restart_call_prepare(task); | |
6964 | return; | |
6965 | } | |
fce5c838 RL |
6966 | dprintk("<-- %s\n", __func__); |
6967 | } | |
6968 | ||
6969 | static void nfs4_free_reclaim_complete_data(void *data) | |
6970 | { | |
6971 | struct nfs4_reclaim_complete_data *calldata = data; | |
6972 | ||
6973 | kfree(calldata); | |
6974 | } | |
6975 | ||
6976 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6977 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6978 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6979 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6980 | }; | |
6981 | ||
6982 | /* | |
6983 | * Issue a global reclaim complete. | |
6984 | */ | |
965e9c23 TM |
6985 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6986 | struct rpc_cred *cred) | |
fce5c838 RL |
6987 | { |
6988 | struct nfs4_reclaim_complete_data *calldata; | |
6989 | struct rpc_task *task; | |
6990 | struct rpc_message msg = { | |
6991 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6992 | .rpc_cred = cred, |
fce5c838 RL |
6993 | }; |
6994 | struct rpc_task_setup task_setup_data = { | |
6995 | .rpc_client = clp->cl_rpcclient, | |
6996 | .rpc_message = &msg, | |
6997 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6998 | .flags = RPC_TASK_ASYNC, | |
6999 | }; | |
7000 | int status = -ENOMEM; | |
7001 | ||
7002 | dprintk("--> %s\n", __func__); | |
8535b2be | 7003 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7004 | if (calldata == NULL) |
7005 | goto out; | |
7006 | calldata->clp = clp; | |
7007 | calldata->arg.one_fs = 0; | |
fce5c838 | 7008 | |
a9c92d6b | 7009 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7010 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7011 | msg.rpc_argp = &calldata->arg; |
7012 | msg.rpc_resp = &calldata->res; | |
7013 | task_setup_data.callback_data = calldata; | |
7014 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7015 | if (IS_ERR(task)) { |
fce5c838 | 7016 | status = PTR_ERR(task); |
acf82b85 DC |
7017 | goto out; |
7018 | } | |
c34c32ea AA |
7019 | status = nfs4_wait_for_completion_rpc_task(task); |
7020 | if (status == 0) | |
7021 | status = task->tk_status; | |
fce5c838 | 7022 | rpc_put_task(task); |
acf82b85 | 7023 | return 0; |
fce5c838 RL |
7024 | out: |
7025 | dprintk("<-- %s status=%d\n", __func__, status); | |
7026 | return status; | |
7027 | } | |
b1f69b75 AA |
7028 | |
7029 | static void | |
7030 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7031 | { | |
7032 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7033 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7034 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7035 | |
7036 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7037 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7038 | * right now covering the LAYOUTGET we are about to send. | |
7039 | * However, that is not so catastrophic, and there seems | |
7040 | * to be no way to prevent it completely. | |
7041 | */ | |
6ba7db34 | 7042 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7043 | &lgp->res.seq_res, task)) |
b1f69b75 | 7044 | return; |
cf7d63f1 FI |
7045 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7046 | NFS_I(lgp->args.inode)->layout, | |
7047 | lgp->args.ctx->state)) { | |
7048 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7049 | } |
b1f69b75 AA |
7050 | } |
7051 | ||
7052 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7053 | { | |
7054 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7055 | struct inode *inode = lgp->args.inode; |
7056 | struct nfs_server *server = NFS_SERVER(inode); | |
7057 | struct pnfs_layout_hdr *lo; | |
7058 | struct nfs4_state *state = NULL; | |
30005121 | 7059 | unsigned long timeo, giveup; |
b1f69b75 AA |
7060 | |
7061 | dprintk("--> %s\n", __func__); | |
7062 | ||
6ba7db34 | 7063 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7064 | goto out; |
b1f69b75 AA |
7065 | |
7066 | switch (task->tk_status) { | |
7067 | case 0: | |
ee314c2a | 7068 | goto out; |
b1f69b75 AA |
7069 | case -NFS4ERR_LAYOUTTRYLATER: |
7070 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
7071 | timeo = rpc_get_timeout(task->tk_client); |
7072 | giveup = lgp->args.timestamp + timeo; | |
7073 | if (time_after(giveup, jiffies)) | |
7074 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
7075 | break; |
7076 | case -NFS4ERR_EXPIRED: | |
7077 | case -NFS4ERR_BAD_STATEID: | |
7078 | spin_lock(&inode->i_lock); | |
7079 | lo = NFS_I(inode)->layout; | |
7080 | if (!lo || list_empty(&lo->plh_segs)) { | |
7081 | spin_unlock(&inode->i_lock); | |
7082 | /* If the open stateid was bad, then recover it. */ | |
7083 | state = lgp->args.ctx->state; | |
7084 | } else { | |
7085 | LIST_HEAD(head); | |
7086 | ||
7087 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
7088 | spin_unlock(&inode->i_lock); | |
7089 | /* Mark the bad layout state as invalid, then | |
7090 | * retry using the open stateid. */ | |
7091 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
7092 | } |
7093 | } | |
ee314c2a TM |
7094 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
7095 | rpc_restart_call_prepare(task); | |
7096 | out: | |
b1f69b75 AA |
7097 | dprintk("<-- %s\n", __func__); |
7098 | } | |
7099 | ||
8554116e IK |
7100 | static size_t max_response_pages(struct nfs_server *server) |
7101 | { | |
7102 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7103 | return nfs_page_array_len(0, max_resp_sz); | |
7104 | } | |
7105 | ||
7106 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7107 | { | |
7108 | int i; | |
7109 | ||
7110 | if (!pages) | |
7111 | return; | |
7112 | ||
7113 | for (i = 0; i < size; i++) { | |
7114 | if (!pages[i]) | |
7115 | break; | |
7116 | __free_page(pages[i]); | |
7117 | } | |
7118 | kfree(pages); | |
7119 | } | |
7120 | ||
7121 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7122 | { | |
7123 | struct page **pages; | |
7124 | int i; | |
7125 | ||
7126 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7127 | if (!pages) { | |
7128 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7129 | return NULL; | |
7130 | } | |
7131 | ||
7132 | for (i = 0; i < size; i++) { | |
7133 | pages[i] = alloc_page(gfp_flags); | |
7134 | if (!pages[i]) { | |
7135 | dprintk("%s: failed to allocate page\n", __func__); | |
7136 | nfs4_free_pages(pages, size); | |
7137 | return NULL; | |
7138 | } | |
7139 | } | |
7140 | ||
7141 | return pages; | |
7142 | } | |
7143 | ||
b1f69b75 AA |
7144 | static void nfs4_layoutget_release(void *calldata) |
7145 | { | |
7146 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7147 | struct inode *inode = lgp->args.inode; |
7148 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7149 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7150 | |
7151 | dprintk("--> %s\n", __func__); | |
8554116e | 7152 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7153 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7154 | put_nfs_open_context(lgp->args.ctx); |
7155 | kfree(calldata); | |
7156 | dprintk("<-- %s\n", __func__); | |
7157 | } | |
7158 | ||
7159 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7160 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7161 | .rpc_call_done = nfs4_layoutget_done, | |
7162 | .rpc_release = nfs4_layoutget_release, | |
7163 | }; | |
7164 | ||
a0b0a6e3 TM |
7165 | struct pnfs_layout_segment * |
7166 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7167 | { |
a47970ff WAA |
7168 | struct inode *inode = lgp->args.inode; |
7169 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7170 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7171 | struct rpc_task *task; |
7172 | struct rpc_message msg = { | |
7173 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7174 | .rpc_argp = &lgp->args, | |
7175 | .rpc_resp = &lgp->res, | |
6ab59344 | 7176 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7177 | }; |
7178 | struct rpc_task_setup task_setup_data = { | |
7179 | .rpc_client = server->client, | |
7180 | .rpc_message = &msg, | |
7181 | .callback_ops = &nfs4_layoutget_call_ops, | |
7182 | .callback_data = lgp, | |
7183 | .flags = RPC_TASK_ASYNC, | |
7184 | }; | |
a0b0a6e3 | 7185 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7186 | int status = 0; |
7187 | ||
7188 | dprintk("--> %s\n", __func__); | |
7189 | ||
8554116e IK |
7190 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7191 | if (!lgp->args.layout.pages) { | |
7192 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7193 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7194 | } |
7195 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7196 | lgp->args.timestamp = jiffies; |
8554116e | 7197 | |
35124a09 | 7198 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7199 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7200 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
7201 | |
7202 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
7203 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7204 | ||
b1f69b75 AA |
7205 | task = rpc_run_task(&task_setup_data); |
7206 | if (IS_ERR(task)) | |
a0b0a6e3 | 7207 | return ERR_CAST(task); |
b1f69b75 | 7208 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7209 | if (status == 0) |
7210 | status = task->tk_status; | |
1037e6ea TM |
7211 | trace_nfs4_layoutget(lgp->args.ctx, |
7212 | &lgp->args.range, | |
7213 | &lgp->res.range, | |
7214 | status); | |
085b7a45 WAA |
7215 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7216 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7217 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7218 | rpc_put_task(task); |
7219 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7220 | if (status) |
7221 | return ERR_PTR(status); | |
7222 | return lseg; | |
b1f69b75 AA |
7223 | } |
7224 | ||
cbe82603 BH |
7225 | static void |
7226 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7227 | { | |
7228 | struct nfs4_layoutreturn *lrp = calldata; | |
7229 | ||
7230 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7231 | nfs41_setup_sequence(lrp->clp->cl_session, |
7232 | &lrp->args.seq_args, | |
7233 | &lrp->res.seq_res, | |
7234 | task); | |
cbe82603 BH |
7235 | } |
7236 | ||
7237 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7238 | { | |
7239 | struct nfs4_layoutreturn *lrp = calldata; | |
7240 | struct nfs_server *server; | |
7241 | ||
7242 | dprintk("--> %s\n", __func__); | |
7243 | ||
6ba7db34 | 7244 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7245 | return; |
7246 | ||
7247 | server = NFS_SERVER(lrp->args.inode); | |
7248 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 7249 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7250 | return; |
7251 | } | |
cbe82603 BH |
7252 | dprintk("<-- %s\n", __func__); |
7253 | } | |
7254 | ||
7255 | static void nfs4_layoutreturn_release(void *calldata) | |
7256 | { | |
7257 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7258 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7259 | |
7260 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7261 | spin_lock(&lo->plh_inode->i_lock); |
7262 | if (lrp->res.lrs_present) | |
7263 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7264 | lo->plh_block_lgets--; | |
7265 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7266 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7267 | kfree(calldata); |
7268 | dprintk("<-- %s\n", __func__); | |
7269 | } | |
7270 | ||
7271 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7272 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7273 | .rpc_call_done = nfs4_layoutreturn_done, | |
7274 | .rpc_release = nfs4_layoutreturn_release, | |
7275 | }; | |
7276 | ||
7277 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7278 | { | |
7279 | struct rpc_task *task; | |
7280 | struct rpc_message msg = { | |
7281 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7282 | .rpc_argp = &lrp->args, | |
7283 | .rpc_resp = &lrp->res, | |
9556000d | 7284 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7285 | }; |
7286 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7287 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7288 | .rpc_message = &msg, |
7289 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7290 | .callback_data = lrp, | |
7291 | }; | |
7292 | int status; | |
7293 | ||
7294 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7295 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7296 | task = rpc_run_task(&task_setup_data); |
7297 | if (IS_ERR(task)) | |
7298 | return PTR_ERR(task); | |
7299 | status = task->tk_status; | |
1037e6ea | 7300 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7301 | dprintk("<-- %s status=%d\n", __func__, status); |
7302 | rpc_put_task(task); | |
7303 | return status; | |
7304 | } | |
7305 | ||
7f11d8d3 AA |
7306 | /* |
7307 | * Retrieve the list of Data Server devices from the MDS. | |
7308 | */ | |
7309 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
7310 | const struct nfs_fh *fh, | |
7311 | struct pnfs_devicelist *devlist) | |
7312 | { | |
7313 | struct nfs4_getdevicelist_args args = { | |
7314 | .fh = fh, | |
7315 | .layoutclass = server->pnfs_curr_ld->id, | |
7316 | }; | |
7317 | struct nfs4_getdevicelist_res res = { | |
7318 | .devlist = devlist, | |
7319 | }; | |
7320 | struct rpc_message msg = { | |
7321 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
7322 | .rpc_argp = &args, | |
7323 | .rpc_resp = &res, | |
7324 | }; | |
7325 | int status; | |
7326 | ||
7327 | dprintk("--> %s\n", __func__); | |
7328 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
7329 | &res.seq_res, 0); | |
7330 | dprintk("<-- %s status=%d\n", __func__, status); | |
7331 | return status; | |
7332 | } | |
7333 | ||
7334 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
7335 | const struct nfs_fh *fh, | |
7336 | struct pnfs_devicelist *devlist) | |
7337 | { | |
7338 | struct nfs4_exception exception = { }; | |
7339 | int err; | |
7340 | ||
7341 | do { | |
7342 | err = nfs4_handle_exception(server, | |
7343 | _nfs4_getdevicelist(server, fh, devlist), | |
7344 | &exception); | |
7345 | } while (exception.retry); | |
7346 | ||
7347 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
7348 | err, devlist->num_devs); | |
7349 | ||
7350 | return err; | |
7351 | } | |
7352 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
7353 | ||
b1f69b75 | 7354 | static int |
cd5875fe TM |
7355 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7356 | struct pnfs_device *pdev, | |
7357 | struct rpc_cred *cred) | |
b1f69b75 AA |
7358 | { |
7359 | struct nfs4_getdeviceinfo_args args = { | |
7360 | .pdev = pdev, | |
7361 | }; | |
7362 | struct nfs4_getdeviceinfo_res res = { | |
7363 | .pdev = pdev, | |
7364 | }; | |
7365 | struct rpc_message msg = { | |
7366 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7367 | .rpc_argp = &args, | |
7368 | .rpc_resp = &res, | |
cd5875fe | 7369 | .rpc_cred = cred, |
b1f69b75 AA |
7370 | }; |
7371 | int status; | |
7372 | ||
7373 | dprintk("--> %s\n", __func__); | |
7c513058 | 7374 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7375 | dprintk("<-- %s status=%d\n", __func__, status); |
7376 | ||
7377 | return status; | |
7378 | } | |
7379 | ||
cd5875fe TM |
7380 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7381 | struct pnfs_device *pdev, | |
7382 | struct rpc_cred *cred) | |
b1f69b75 AA |
7383 | { |
7384 | struct nfs4_exception exception = { }; | |
7385 | int err; | |
7386 | ||
7387 | do { | |
7388 | err = nfs4_handle_exception(server, | |
cd5875fe | 7389 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7390 | &exception); |
7391 | } while (exception.retry); | |
7392 | return err; | |
7393 | } | |
7394 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7395 | ||
863a3c6c AA |
7396 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7397 | { | |
7398 | struct nfs4_layoutcommit_data *data = calldata; | |
7399 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7400 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7401 | |
d9afbd1b TM |
7402 | nfs41_setup_sequence(session, |
7403 | &data->args.seq_args, | |
7404 | &data->res.seq_res, | |
7405 | task); | |
863a3c6c AA |
7406 | } |
7407 | ||
7408 | static void | |
7409 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7410 | { | |
7411 | struct nfs4_layoutcommit_data *data = calldata; | |
7412 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7413 | ||
6ba7db34 | 7414 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7415 | return; |
7416 | ||
7417 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7418 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7419 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7420 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7421 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7422 | task->tk_status = 0; |
e59d27e0 TM |
7423 | break; |
7424 | case 0: | |
863a3c6c AA |
7425 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7426 | data->res.fattr); | |
e59d27e0 TM |
7427 | break; |
7428 | default: | |
7429 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7430 | rpc_restart_call_prepare(task); | |
7431 | return; | |
7432 | } | |
7433 | } | |
863a3c6c AA |
7434 | } |
7435 | ||
7436 | static void nfs4_layoutcommit_release(void *calldata) | |
7437 | { | |
7438 | struct nfs4_layoutcommit_data *data = calldata; | |
7439 | ||
db29c089 | 7440 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
7441 | put_rpccred(data->cred); |
7442 | kfree(data); | |
7443 | } | |
7444 | ||
7445 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7446 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7447 | .rpc_call_done = nfs4_layoutcommit_done, | |
7448 | .rpc_release = nfs4_layoutcommit_release, | |
7449 | }; | |
7450 | ||
7451 | int | |
ef311537 | 7452 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7453 | { |
7454 | struct rpc_message msg = { | |
7455 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7456 | .rpc_argp = &data->args, | |
7457 | .rpc_resp = &data->res, | |
7458 | .rpc_cred = data->cred, | |
7459 | }; | |
7460 | struct rpc_task_setup task_setup_data = { | |
7461 | .task = &data->task, | |
7462 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7463 | .rpc_message = &msg, | |
7464 | .callback_ops = &nfs4_layoutcommit_ops, | |
7465 | .callback_data = data, | |
7466 | .flags = RPC_TASK_ASYNC, | |
7467 | }; | |
7468 | struct rpc_task *task; | |
7469 | int status = 0; | |
7470 | ||
7471 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7472 | "lbw: %llu inode %lu\n", | |
7473 | data->task.tk_pid, sync, | |
7474 | data->args.lastbytewritten, | |
7475 | data->args.inode->i_ino); | |
7476 | ||
a9c92d6b | 7477 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7478 | task = rpc_run_task(&task_setup_data); |
7479 | if (IS_ERR(task)) | |
7480 | return PTR_ERR(task); | |
ef311537 | 7481 | if (sync == false) |
863a3c6c AA |
7482 | goto out; |
7483 | status = nfs4_wait_for_completion_rpc_task(task); | |
7484 | if (status != 0) | |
7485 | goto out; | |
7486 | status = task->tk_status; | |
1037e6ea | 7487 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7488 | out: |
7489 | dprintk("%s: status %d\n", __func__, status); | |
7490 | rpc_put_task(task); | |
7491 | return status; | |
7492 | } | |
fca78d6d | 7493 | |
97431204 AA |
7494 | /** |
7495 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7496 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7497 | */ | |
fca78d6d BS |
7498 | static int |
7499 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
7500 | struct nfs_fsinfo *info, |
7501 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
7502 | { |
7503 | struct nfs41_secinfo_no_name_args args = { | |
7504 | .style = SECINFO_STYLE_CURRENT_FH, | |
7505 | }; | |
7506 | struct nfs4_secinfo_res res = { | |
7507 | .flavors = flavors, | |
7508 | }; | |
7509 | struct rpc_message msg = { | |
7510 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7511 | .rpc_argp = &args, | |
7512 | .rpc_resp = &res, | |
7513 | }; | |
b1b3e136 | 7514 | struct rpc_clnt *clnt = server->client; |
7cb852df | 7515 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
7516 | int status; |
7517 | ||
7518 | if (use_integrity) { | |
7519 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
7520 | cred = nfs4_get_clid_cred(server->nfs_client); |
7521 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
7522 | } |
7523 | ||
7524 | dprintk("--> %s\n", __func__); | |
7525 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
7526 | &res.seq_res, 0); | |
7527 | dprintk("<-- %s status=%d\n", __func__, status); | |
7528 | ||
7cb852df WAA |
7529 | if (cred) |
7530 | put_rpccred(cred); | |
b1b3e136 WAA |
7531 | |
7532 | return status; | |
fca78d6d BS |
7533 | } |
7534 | ||
7535 | static int | |
7536 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7537 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7538 | { | |
7539 | struct nfs4_exception exception = { }; | |
7540 | int err; | |
7541 | do { | |
b1b3e136 WAA |
7542 | /* first try using integrity protection */ |
7543 | err = -NFS4ERR_WRONGSEC; | |
7544 | ||
7545 | /* try to use integrity protection with machine cred */ | |
7546 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
7547 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7548 | flavors, true); | |
7549 | ||
7550 | /* | |
7551 | * if unable to use integrity protection, or SECINFO with | |
7552 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
7553 | * disallowed by spec, but exists in deployed servers) use | |
7554 | * the current filesystem's rpc_client and the user cred. | |
7555 | */ | |
7556 | if (err == -NFS4ERR_WRONGSEC) | |
7557 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7558 | flavors, false); | |
7559 | ||
fca78d6d BS |
7560 | switch (err) { |
7561 | case 0: | |
7562 | case -NFS4ERR_WRONGSEC: | |
7563 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 7564 | goto out; |
fca78d6d BS |
7565 | default: |
7566 | err = nfs4_handle_exception(server, err, &exception); | |
7567 | } | |
7568 | } while (exception.retry); | |
05e9cfb4 | 7569 | out: |
fca78d6d BS |
7570 | return err; |
7571 | } | |
7572 | ||
7573 | static int | |
7574 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7575 | struct nfs_fsinfo *info) | |
7576 | { | |
7577 | int err; | |
7578 | struct page *page; | |
7579 | rpc_authflavor_t flavor; | |
7580 | struct nfs4_secinfo_flavors *flavors; | |
7581 | ||
7582 | page = alloc_page(GFP_KERNEL); | |
7583 | if (!page) { | |
7584 | err = -ENOMEM; | |
7585 | goto out; | |
7586 | } | |
7587 | ||
7588 | flavors = page_address(page); | |
7589 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7590 | ||
7591 | /* | |
7592 | * Fall back on "guess and check" method if | |
7593 | * the server doesn't support SECINFO_NO_NAME | |
7594 | */ | |
7595 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
7596 | err = nfs4_find_root_sec(server, fhandle, info); | |
7597 | goto out_freepage; | |
7598 | } | |
7599 | if (err) | |
7600 | goto out_freepage; | |
7601 | ||
7602 | flavor = nfs_find_best_sec(flavors); | |
7603 | if (err == 0) | |
7604 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
7605 | ||
7606 | out_freepage: | |
7607 | put_page(page); | |
7608 | if (err == -EACCES) | |
7609 | return -EPERM; | |
7610 | out: | |
7611 | return err; | |
7612 | } | |
1cab0652 | 7613 | |
ab7cb0df TM |
7614 | static int _nfs41_test_stateid(struct nfs_server *server, |
7615 | nfs4_stateid *stateid, | |
7616 | struct rpc_cred *cred) | |
7d974794 BS |
7617 | { |
7618 | int status; | |
7619 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7620 | .stateid = stateid, |
7d974794 BS |
7621 | }; |
7622 | struct nfs41_test_stateid_res res; | |
7623 | struct rpc_message msg = { | |
7624 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7625 | .rpc_argp = &args, | |
7626 | .rpc_resp = &res, | |
ab7cb0df | 7627 | .rpc_cred = cred, |
7d974794 | 7628 | }; |
3787d506 WAA |
7629 | struct rpc_clnt *rpc_client = server->client; |
7630 | ||
7631 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
7632 | &rpc_client, &msg); | |
1cab0652 | 7633 | |
38527b15 | 7634 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 7635 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 7636 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 7637 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 7638 | &args.seq_args, &res.seq_res); |
38527b15 CL |
7639 | if (status != NFS_OK) { |
7640 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7641 | return status; |
38527b15 CL |
7642 | } |
7643 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7644 | return -res.status; |
7d974794 BS |
7645 | } |
7646 | ||
38527b15 CL |
7647 | /** |
7648 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7649 | * | |
7650 | * @server: server / transport on which to perform the operation | |
7651 | * @stateid: state ID to test | |
ab7cb0df | 7652 | * @cred: credential |
38527b15 CL |
7653 | * |
7654 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7655 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7656 | * failed or the state ID is not currently valid. | |
7657 | */ | |
ab7cb0df TM |
7658 | static int nfs41_test_stateid(struct nfs_server *server, |
7659 | nfs4_stateid *stateid, | |
7660 | struct rpc_cred *cred) | |
7d974794 BS |
7661 | { |
7662 | struct nfs4_exception exception = { }; | |
7663 | int err; | |
7664 | do { | |
ab7cb0df | 7665 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
7666 | if (err != -NFS4ERR_DELAY) |
7667 | break; | |
7668 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7669 | } while (exception.retry); |
7670 | return err; | |
7671 | } | |
9aeda35f | 7672 | |
7c1d5fae TM |
7673 | struct nfs_free_stateid_data { |
7674 | struct nfs_server *server; | |
7675 | struct nfs41_free_stateid_args args; | |
9aeda35f | 7676 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
7677 | }; |
7678 | ||
7679 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
7680 | { | |
7681 | struct nfs_free_stateid_data *data = calldata; | |
7682 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
7683 | &data->args.seq_args, | |
7684 | &data->res.seq_res, | |
7685 | task); | |
7686 | } | |
7687 | ||
7688 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
7689 | { | |
7690 | struct nfs_free_stateid_data *data = calldata; | |
7691 | ||
7692 | nfs41_sequence_done(task, &data->res.seq_res); | |
7693 | ||
7694 | switch (task->tk_status) { | |
7695 | case -NFS4ERR_DELAY: | |
7696 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
7697 | rpc_restart_call_prepare(task); | |
7698 | } | |
7699 | } | |
7700 | ||
7701 | static void nfs41_free_stateid_release(void *calldata) | |
7702 | { | |
7703 | kfree(calldata); | |
7704 | } | |
7705 | ||
17f26b12 | 7706 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
7707 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
7708 | .rpc_call_done = nfs41_free_stateid_done, | |
7709 | .rpc_release = nfs41_free_stateid_release, | |
7710 | }; | |
7711 | ||
7712 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
7713 | nfs4_stateid *stateid, | |
ab7cb0df | 7714 | struct rpc_cred *cred, |
7c1d5fae TM |
7715 | bool privileged) |
7716 | { | |
9aeda35f BS |
7717 | struct rpc_message msg = { |
7718 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 7719 | .rpc_cred = cred, |
9aeda35f | 7720 | }; |
7c1d5fae TM |
7721 | struct rpc_task_setup task_setup = { |
7722 | .rpc_client = server->client, | |
7723 | .rpc_message = &msg, | |
7724 | .callback_ops = &nfs41_free_stateid_ops, | |
7725 | .flags = RPC_TASK_ASYNC, | |
7726 | }; | |
7727 | struct nfs_free_stateid_data *data; | |
9aeda35f | 7728 | |
3787d506 WAA |
7729 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
7730 | &task_setup.rpc_client, &msg); | |
7731 | ||
38527b15 | 7732 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
7733 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7734 | if (!data) | |
7735 | return ERR_PTR(-ENOMEM); | |
7736 | data->server = server; | |
7737 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
7738 | ||
7739 | task_setup.callback_data = data; | |
7740 | ||
7741 | msg.rpc_argp = &data->args; | |
7742 | msg.rpc_resp = &data->res; | |
a9c92d6b | 7743 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
7744 | if (privileged) |
7745 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
7746 | ||
7747 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
7748 | } |
7749 | ||
38527b15 CL |
7750 | /** |
7751 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7752 | * | |
7753 | * @server: server / transport on which to perform the operation | |
7754 | * @stateid: state ID to release | |
ab7cb0df | 7755 | * @cred: credential |
38527b15 CL |
7756 | * |
7757 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7758 | * negative NFS4ERR value is returned. | |
7759 | */ | |
ab7cb0df TM |
7760 | static int nfs41_free_stateid(struct nfs_server *server, |
7761 | nfs4_stateid *stateid, | |
7762 | struct rpc_cred *cred) | |
9aeda35f | 7763 | { |
7c1d5fae TM |
7764 | struct rpc_task *task; |
7765 | int ret; | |
7766 | ||
ab7cb0df | 7767 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
7768 | if (IS_ERR(task)) |
7769 | return PTR_ERR(task); | |
7770 | ret = rpc_wait_for_completion_task(task); | |
7771 | if (!ret) | |
7772 | ret = task->tk_status; | |
7773 | rpc_put_task(task); | |
7774 | return ret; | |
9aeda35f | 7775 | } |
36281caa | 7776 | |
c8b2d0bf TM |
7777 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
7778 | { | |
7779 | struct rpc_task *task; | |
ab7cb0df | 7780 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 7781 | |
ab7cb0df | 7782 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
7783 | nfs4_free_lock_state(server, lsp); |
7784 | if (IS_ERR(task)) | |
7785 | return PTR_ERR(task); | |
7786 | rpc_put_task(task); | |
7787 | return 0; | |
7788 | } | |
7789 | ||
36281caa TM |
7790 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
7791 | const nfs4_stateid *s2) | |
7792 | { | |
2d2f24ad | 7793 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7794 | return false; |
7795 | ||
2d2f24ad | 7796 | if (s1->seqid == s2->seqid) |
36281caa | 7797 | return true; |
2d2f24ad | 7798 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7799 | return true; |
7800 | ||
7801 | return false; | |
7802 | } | |
7803 | ||
557134a3 AA |
7804 | #endif /* CONFIG_NFS_V4_1 */ |
7805 | ||
36281caa TM |
7806 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7807 | const nfs4_stateid *s2) | |
7808 | { | |
f597c537 | 7809 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7810 | } |
7811 | ||
7812 | ||
17280175 | 7813 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7814 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7815 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7816 | .recover_open = nfs4_open_reclaim, |
7817 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7818 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 7819 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7820 | }; |
7821 | ||
591d71cb | 7822 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7823 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7824 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7825 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7826 | .recover_open = nfs4_open_reclaim, | |
7827 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7828 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 7829 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7830 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7831 | }; |
7832 | #endif /* CONFIG_NFS_V4_1 */ | |
7833 | ||
17280175 | 7834 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7835 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7836 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7837 | .recover_open = nfs4_open_expired, | |
7838 | .recover_lock = nfs4_lock_expired, | |
7839 | .establish_clid = nfs4_init_clientid, | |
7840 | }; | |
7841 | ||
7842 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7843 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7844 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7845 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7846 | .recover_open = nfs41_open_expired, |
7847 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7848 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 7849 | }; |
591d71cb | 7850 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7851 | |
17280175 | 7852 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7853 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7854 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7855 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7856 | }; |
7857 | ||
7858 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7859 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7860 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7861 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7862 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7863 | }; |
7864 | #endif | |
7865 | ||
97dc1359 TM |
7866 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7867 | .minor_version = 0, | |
39c6daae TM |
7868 | .init_caps = NFS_CAP_READDIRPLUS |
7869 | | NFS_CAP_ATOMIC_OPEN | |
7870 | | NFS_CAP_CHANGE_ATTR | |
7871 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
7872 | .init_client = nfs40_init_client, |
7873 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 7874 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7875 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7876 | .free_lock_state = nfs4_release_lockowner, |
9915ea7e | 7877 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
7878 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7879 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7880 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7881 | }; |
7882 | ||
7883 | #if defined(CONFIG_NFS_V4_1) | |
7884 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7885 | .minor_version = 1, | |
39c6daae TM |
7886 | .init_caps = NFS_CAP_READDIRPLUS |
7887 | | NFS_CAP_ATOMIC_OPEN | |
7888 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7889 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7890 | | NFS_CAP_STATEID_NFSV41 |
7891 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
7892 | .init_client = nfs41_init_client, |
7893 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 7894 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7895 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7896 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 7897 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
7898 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7899 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7900 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7901 | }; |
7902 | #endif | |
7903 | ||
42c2c424 SD |
7904 | #if defined(CONFIG_NFS_V4_2) |
7905 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7906 | .minor_version = 2, | |
7017310a BS |
7907 | .init_caps = NFS_CAP_READDIRPLUS |
7908 | | NFS_CAP_ATOMIC_OPEN | |
7909 | | NFS_CAP_CHANGE_ATTR | |
7910 | | NFS_CAP_POSIX_LOCK | |
7911 | | NFS_CAP_STATEID_NFSV41 | |
7912 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
7913 | .init_client = nfs41_init_client, |
7914 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
7915 | .match_stateid = nfs41_match_stateid, |
7916 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 7917 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 7918 | .call_sync_ops = &nfs41_call_sync_ops, |
42c2c424 SD |
7919 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7920 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7921 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7922 | }; | |
7923 | #endif | |
7924 | ||
97dc1359 TM |
7925 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7926 | [0] = &nfs_v4_0_minor_ops, | |
7927 | #if defined(CONFIG_NFS_V4_1) | |
7928 | [1] = &nfs_v4_1_minor_ops, | |
7929 | #endif | |
42c2c424 SD |
7930 | #if defined(CONFIG_NFS_V4_2) |
7931 | [2] = &nfs_v4_2_minor_ops, | |
7932 | #endif | |
97dc1359 TM |
7933 | }; |
7934 | ||
17f26b12 | 7935 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
7936 | .create = nfs_create, |
7937 | .lookup = nfs_lookup, | |
7938 | .atomic_open = nfs_atomic_open, | |
7939 | .link = nfs_link, | |
7940 | .unlink = nfs_unlink, | |
7941 | .symlink = nfs_symlink, | |
7942 | .mkdir = nfs_mkdir, | |
7943 | .rmdir = nfs_rmdir, | |
7944 | .mknod = nfs_mknod, | |
7945 | .rename = nfs_rename, | |
7946 | .permission = nfs_permission, | |
7947 | .getattr = nfs_getattr, | |
7948 | .setattr = nfs_setattr, | |
7949 | .getxattr = generic_getxattr, | |
7950 | .setxattr = generic_setxattr, | |
7951 | .listxattr = generic_listxattr, | |
7952 | .removexattr = generic_removexattr, | |
7953 | }; | |
7954 | ||
92e1d5be | 7955 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7956 | .permission = nfs_permission, |
7957 | .getattr = nfs_getattr, | |
7958 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7959 | .getxattr = generic_getxattr, |
7960 | .setxattr = generic_setxattr, | |
7961 | .listxattr = generic_listxattr, | |
7962 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7963 | }; |
7964 | ||
509de811 | 7965 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7966 | .version = 4, /* protocol version */ |
7967 | .dentry_ops = &nfs4_dentry_operations, | |
7968 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7969 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7970 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7971 | .getroot = nfs4_proc_get_root, |
281cad46 | 7972 | .submount = nfs4_submount, |
ff9099f2 | 7973 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7974 | .getattr = nfs4_proc_getattr, |
7975 | .setattr = nfs4_proc_setattr, | |
7976 | .lookup = nfs4_proc_lookup, | |
7977 | .access = nfs4_proc_access, | |
7978 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7979 | .create = nfs4_proc_create, |
7980 | .remove = nfs4_proc_remove, | |
7981 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7982 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7983 | .unlink_done = nfs4_proc_unlink_done, |
7984 | .rename = nfs4_proc_rename, | |
d3d4152a | 7985 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7986 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7987 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7988 | .link = nfs4_proc_link, |
7989 | .symlink = nfs4_proc_symlink, | |
7990 | .mkdir = nfs4_proc_mkdir, | |
7991 | .rmdir = nfs4_proc_remove, | |
7992 | .readdir = nfs4_proc_readdir, | |
7993 | .mknod = nfs4_proc_mknod, | |
7994 | .statfs = nfs4_proc_statfs, | |
7995 | .fsinfo = nfs4_proc_fsinfo, | |
7996 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7997 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7998 | .decode_dirent = nfs4_decode_dirent, |
7999 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 8000 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 8001 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 8002 | .read_done = nfs4_read_done, |
1da177e4 | 8003 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 8004 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 8005 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 8006 | .write_done = nfs4_write_done, |
1da177e4 | 8007 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8008 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8009 | .commit_done = nfs4_commit_done, |
1da177e4 | 8010 | .lock = nfs4_proc_lock, |
e50a1c2e | 8011 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8012 | .close_context = nfs4_close_context, |
2b484297 | 8013 | .open_context = nfs4_atomic_open, |
011e2a7f | 8014 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8015 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8016 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8017 | .init_client = nfs4_init_client, |
cdb7eced | 8018 | .free_client = nfs4_free_client, |
1179acc6 BS |
8019 | .create_server = nfs4_create_server, |
8020 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8021 | }; |
8022 | ||
64c2ce8b AK |
8023 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8024 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8025 | .list = nfs4_xattr_list_nfs4_acl, | |
8026 | .get = nfs4_xattr_get_nfs4_acl, | |
8027 | .set = nfs4_xattr_set_nfs4_acl, | |
8028 | }; | |
8029 | ||
8030 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8031 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8032 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8033 | &nfs4_xattr_nfs4_label_handler, | |
8034 | #endif | |
64c2ce8b AK |
8035 | NULL |
8036 | }; | |
8037 | ||
1da177e4 LT |
8038 | /* |
8039 | * Local variables: | |
8040 | * c-basic-offset: 8 | |
8041 | * End: | |
8042 | */ |