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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; |
bdeca1b7 | 915 | unsigned int is_recover : 1; |
24ac23ab TM |
916 | int rpc_status; |
917 | int cancelled; | |
e56e0b78 TM |
918 | }; |
919 | ||
49f9a0fa TM |
920 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
921 | int err, struct nfs4_exception *exception) | |
922 | { | |
923 | if (err != -EINVAL) | |
924 | return false; | |
925 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
926 | return false; | |
927 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
928 | exception->retry = 1; | |
929 | return true; | |
930 | } | |
931 | ||
932 | static enum open_claim_type4 | |
933 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
934 | enum open_claim_type4 claim) | |
935 | { | |
936 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
937 | return claim; | |
938 | switch (claim) { | |
939 | default: | |
940 | return claim; | |
941 | case NFS4_OPEN_CLAIM_FH: | |
942 | return NFS4_OPEN_CLAIM_NULL; | |
943 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
944 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
945 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
946 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
947 | } | |
948 | } | |
2ced46c2 TM |
949 | |
950 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
951 | { | |
952 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 953 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
954 | p->o_res.seqid = p->o_arg.seqid; |
955 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 956 | p->o_res.server = p->o_arg.server; |
5f657530 | 957 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 958 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 959 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
960 | } |
961 | ||
82a2c1b7 | 962 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 963 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 964 | const struct iattr *attrs, |
1775fd3e | 965 | struct nfs4_label *label, |
4a1c0893 | 966 | enum open_claim_type4 claim, |
8535b2be | 967 | gfp_t gfp_mask) |
e56e0b78 | 968 | { |
82a2c1b7 | 969 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
970 | struct inode *dir = parent->d_inode; |
971 | struct nfs_server *server = NFS_SERVER(dir); | |
972 | struct nfs4_opendata *p; | |
973 | ||
8535b2be | 974 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
975 | if (p == NULL) |
976 | goto err; | |
14c43f76 DQ |
977 | |
978 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
979 | if (IS_ERR(p->f_label)) | |
980 | goto err_free_p; | |
981 | ||
8535b2be | 982 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 983 | if (p->o_arg.seqid == NULL) |
14c43f76 | 984 | goto err_free_label; |
82a2c1b7 AV |
985 | nfs_sb_active(dentry->d_sb); |
986 | p->dentry = dget(dentry); | |
e56e0b78 TM |
987 | p->dir = parent; |
988 | p->owner = sp; | |
989 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
990 | p->o_arg.open_flags = flags; |
991 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
992 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
993 | * will return permission denied for all bits until close */ | |
994 | if (!(flags & O_EXCL)) { | |
995 | /* ask server to check for all possible rights as results | |
996 | * are cached */ | |
997 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
998 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 999 | } |
7539bbab | 1000 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1001 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1002 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1003 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1004 | p->o_arg.server = server; |
aa9c2669 | 1005 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1006 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 1007 | p->o_arg.label = label; |
49f9a0fa TM |
1008 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1009 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1010 | case NFS4_OPEN_CLAIM_NULL: |
1011 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1012 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1013 | p->o_arg.fh = NFS_FH(dir); | |
1014 | break; | |
1015 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1016 | case NFS4_OPEN_CLAIM_FH: | |
1017 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1018 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1019 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
1020 | } | |
536e43d1 | 1021 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1022 | __u32 verf[2]; |
d77d76ff | 1023 | |
e56e0b78 TM |
1024 | p->o_arg.u.attrs = &p->attrs; |
1025 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1026 | |
1027 | verf[0] = jiffies; | |
1028 | verf[1] = current->pid; | |
1029 | memcpy(p->o_arg.u.verifier.data, verf, | |
1030 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1031 | } |
cdd4e68b TM |
1032 | p->c_arg.fh = &p->o_res.fh; |
1033 | p->c_arg.stateid = &p->o_res.stateid; | |
1034 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1035 | nfs4_init_opendata_res(p); |
c6d00e63 | 1036 | kref_init(&p->kref); |
e56e0b78 | 1037 | return p; |
14c43f76 DQ |
1038 | |
1039 | err_free_label: | |
1040 | nfs4_label_free(p->f_label); | |
1041 | err_free_p: | |
e56e0b78 TM |
1042 | kfree(p); |
1043 | err: | |
1044 | dput(parent); | |
1045 | return NULL; | |
1046 | } | |
1047 | ||
c6d00e63 | 1048 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1049 | { |
c6d00e63 TM |
1050 | struct nfs4_opendata *p = container_of(kref, |
1051 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1052 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1053 | |
1054 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1055 | if (p->state != NULL) |
1056 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1057 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
1058 | |
1059 | nfs4_label_free(p->f_label); | |
1060 | ||
c6d00e63 | 1061 | dput(p->dir); |
82a2c1b7 AV |
1062 | dput(p->dentry); |
1063 | nfs_sb_deactive(sb); | |
6926afd1 | 1064 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
1065 | kfree(p); |
1066 | } | |
1067 | ||
1068 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1069 | { | |
1070 | if (p != NULL) | |
1071 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1072 | } |
1073 | ||
06f814a3 TM |
1074 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1075 | { | |
06f814a3 TM |
1076 | int ret; |
1077 | ||
06f814a3 | 1078 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1079 | return ret; |
1080 | } | |
1081 | ||
dc0b027d | 1082 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1083 | { |
1084 | int ret = 0; | |
dc0b027d | 1085 | |
536e43d1 | 1086 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1087 | goto out; |
1088 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1089 | case FMODE_READ: |
88069f77 TM |
1090 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1091 | && state->n_rdonly != 0; | |
6ee41268 TM |
1092 | break; |
1093 | case FMODE_WRITE: | |
88069f77 TM |
1094 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1095 | && state->n_wronly != 0; | |
6ee41268 TM |
1096 | break; |
1097 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1098 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1099 | && state->n_rdwr != 0; | |
6ee41268 | 1100 | } |
dc0b027d | 1101 | out: |
6ee41268 TM |
1102 | return ret; |
1103 | } | |
1104 | ||
dc0b027d | 1105 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1106 | { |
652f89f6 TM |
1107 | if (delegation == NULL) |
1108 | return 0; | |
dc0b027d | 1109 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1110 | return 0; |
15c831bf | 1111 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1112 | return 0; |
d25be546 TM |
1113 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1114 | return 0; | |
b7391f44 | 1115 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1116 | return 1; |
1117 | } | |
1118 | ||
dc0b027d | 1119 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1120 | { |
dc0b027d | 1121 | switch (fmode) { |
e7616923 TM |
1122 | case FMODE_WRITE: |
1123 | state->n_wronly++; | |
1124 | break; | |
1125 | case FMODE_READ: | |
1126 | state->n_rdonly++; | |
1127 | break; | |
1128 | case FMODE_READ|FMODE_WRITE: | |
1129 | state->n_rdwr++; | |
1130 | } | |
dc0b027d | 1131 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1132 | } |
1133 | ||
dc0b027d | 1134 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1135 | { |
1136 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1137 | nfs4_stateid_copy(&state->stateid, stateid); |
1138 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 1139 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 1140 | switch (fmode) { |
003707c7 TM |
1141 | case FMODE_READ: |
1142 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1143 | break; | |
1144 | case FMODE_WRITE: | |
1145 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1146 | break; | |
1147 | case FMODE_READ|FMODE_WRITE: | |
1148 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1149 | } | |
e7616923 TM |
1150 | } |
1151 | ||
dc0b027d | 1152 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1153 | { |
8bda4e4c | 1154 | write_seqlock(&state->seqlock); |
dc0b027d | 1155 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1156 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1157 | } |
1158 | ||
dc0b027d | 1159 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1160 | { |
8bda4e4c TM |
1161 | /* |
1162 | * Protect the call to nfs4_state_set_mode_locked and | |
1163 | * serialise the stateid update | |
1164 | */ | |
1165 | write_seqlock(&state->seqlock); | |
003707c7 | 1166 | if (deleg_stateid != NULL) { |
f597c537 | 1167 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1168 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1169 | } | |
1170 | if (open_stateid != NULL) | |
dc0b027d | 1171 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1172 | write_sequnlock(&state->seqlock); |
1173 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1174 | update_open_stateflags(state, fmode); |
ec073428 | 1175 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1176 | } |
1177 | ||
dc0b027d | 1178 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1179 | { |
1180 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1181 | struct nfs_delegation *deleg_cur; | |
1182 | int ret = 0; | |
1183 | ||
dc0b027d | 1184 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1185 | |
1186 | rcu_read_lock(); | |
1187 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1188 | if (deleg_cur == NULL) | |
1189 | goto no_delegation; | |
1190 | ||
1191 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1192 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1193 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1194 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1195 | goto no_delegation_unlock; |
1196 | ||
1197 | if (delegation == NULL) | |
1198 | delegation = &deleg_cur->stateid; | |
f597c537 | 1199 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1200 | goto no_delegation_unlock; |
1201 | ||
b7391f44 | 1202 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1203 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1204 | ret = 1; |
1205 | no_delegation_unlock: | |
1206 | spin_unlock(&deleg_cur->lock); | |
1207 | no_delegation: | |
1208 | rcu_read_unlock(); | |
1209 | ||
1210 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1211 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1212 | ret = 1; |
1213 | } | |
1214 | ||
1215 | return ret; | |
1216 | } | |
1217 | ||
1218 | ||
dc0b027d | 1219 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1220 | { |
1221 | struct nfs_delegation *delegation; | |
1222 | ||
1223 | rcu_read_lock(); | |
1224 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1225 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1226 | rcu_read_unlock(); |
1227 | return; | |
1228 | } | |
1229 | rcu_read_unlock(); | |
57ec14c5 | 1230 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1231 | } |
1232 | ||
6ee41268 | 1233 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1234 | { |
1235 | struct nfs4_state *state = opendata->state; | |
1236 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1237 | struct nfs_delegation *delegation; | |
f448badd | 1238 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1239 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1240 | nfs4_stateid stateid; |
1241 | int ret = -EAGAIN; | |
1242 | ||
aac00a8d | 1243 | for (;;) { |
dc0b027d | 1244 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1245 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1246 | if (can_open_cached(state, fmode, open_mode)) { |
1247 | update_open_stateflags(state, fmode); | |
6ee41268 | 1248 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1249 | goto out_return_state; |
1250 | } | |
1251 | spin_unlock(&state->owner->so_lock); | |
1252 | } | |
34310430 TM |
1253 | rcu_read_lock(); |
1254 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1255 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1256 | rcu_read_unlock(); |
aac00a8d | 1257 | break; |
34310430 | 1258 | } |
aac00a8d | 1259 | /* Save the delegation */ |
f597c537 | 1260 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1261 | rcu_read_unlock(); |
fa332941 | 1262 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1263 | if (!opendata->is_recover) { |
1264 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1265 | if (ret != 0) | |
1266 | goto out; | |
1267 | } | |
aac00a8d | 1268 | ret = -EAGAIN; |
34310430 TM |
1269 | |
1270 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1271 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1272 | goto out_return_state; |
aac00a8d | 1273 | } |
aac00a8d TM |
1274 | out: |
1275 | return ERR_PTR(ret); | |
1276 | out_return_state: | |
1277 | atomic_inc(&state->count); | |
1278 | return state; | |
1279 | } | |
1280 | ||
e23008ec AA |
1281 | static void |
1282 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1283 | { | |
1284 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1285 | struct nfs_delegation *delegation; | |
1286 | int delegation_flags = 0; | |
1287 | ||
1288 | rcu_read_lock(); | |
1289 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1290 | if (delegation) | |
1291 | delegation_flags = delegation->flags; | |
1292 | rcu_read_unlock(); | |
1293 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1294 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1295 | "returning a delegation for " | |
1296 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1297 | clp->cl_hostname); | |
1298 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1299 | nfs_inode_set_delegation(state->inode, | |
1300 | data->owner->so_cred, | |
1301 | &data->o_res); | |
1302 | else | |
1303 | nfs_inode_reclaim_delegation(state->inode, | |
1304 | data->owner->so_cred, | |
1305 | &data->o_res); | |
1306 | } | |
1307 | ||
1308 | /* | |
1309 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1310 | * and update the nfs4_state. | |
1311 | */ | |
1312 | static struct nfs4_state * | |
1313 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1314 | { | |
1315 | struct inode *inode = data->state->inode; | |
1316 | struct nfs4_state *state = data->state; | |
1317 | int ret; | |
1318 | ||
1319 | if (!data->rpc_done) { | |
1320 | ret = data->rpc_status; | |
1321 | goto err; | |
1322 | } | |
1323 | ||
1324 | ret = -ESTALE; | |
1325 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1326 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1327 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1328 | goto err; | |
1329 | ||
1330 | ret = -ENOMEM; | |
1331 | state = nfs4_get_open_state(inode, data->owner); | |
1332 | if (state == NULL) | |
1333 | goto err; | |
1334 | ||
1335 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1336 | if (ret) | |
1337 | goto err; | |
1338 | ||
aa9c2669 DQ |
1339 | nfs_setsecurity(inode, &data->f_attr, data->f_label); |
1340 | ||
e23008ec AA |
1341 | if (data->o_res.delegation_type != 0) |
1342 | nfs4_opendata_check_deleg(data, state); | |
1343 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1344 | data->o_arg.fmode); | |
1345 | ||
1346 | return state; | |
1347 | err: | |
1348 | return ERR_PTR(ret); | |
1349 | ||
1350 | } | |
1351 | ||
1352 | static struct nfs4_state * | |
1353 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1354 | { |
1355 | struct inode *inode; | |
1356 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1357 | int ret; |
24ac23ab | 1358 | |
aac00a8d | 1359 | if (!data->rpc_done) { |
6ee41268 | 1360 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1361 | goto out; |
1362 | } | |
1363 | ||
1b370bc2 | 1364 | ret = -EAGAIN; |
24ac23ab | 1365 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1366 | goto err; |
1775fd3e | 1367 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1368 | ret = PTR_ERR(inode); |
03f28e3a | 1369 | if (IS_ERR(inode)) |
1b370bc2 TM |
1370 | goto err; |
1371 | ret = -ENOMEM; | |
24ac23ab TM |
1372 | state = nfs4_get_open_state(inode, data->owner); |
1373 | if (state == NULL) | |
1b370bc2 | 1374 | goto err_put_inode; |
e23008ec AA |
1375 | if (data->o_res.delegation_type != 0) |
1376 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1377 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1378 | data->o_arg.fmode); |
24ac23ab | 1379 | iput(inode); |
aac00a8d | 1380 | out: |
7aa262b5 | 1381 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1382 | return state; |
1b370bc2 TM |
1383 | err_put_inode: |
1384 | iput(inode); | |
1385 | err: | |
1386 | return ERR_PTR(ret); | |
24ac23ab TM |
1387 | } |
1388 | ||
e23008ec AA |
1389 | static struct nfs4_state * |
1390 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1391 | { | |
1392 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1393 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1394 | return _nfs4_opendata_to_nfs4_state(data); | |
1395 | } | |
1396 | ||
864472e9 TM |
1397 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1398 | { | |
1399 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1400 | struct nfs_open_context *ctx; | |
1401 | ||
1402 | spin_lock(&state->inode->i_lock); | |
1403 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1404 | if (ctx->state != state) | |
1405 | continue; | |
1406 | get_nfs_open_context(ctx); | |
1407 | spin_unlock(&state->inode->i_lock); | |
1408 | return ctx; | |
1409 | } | |
1410 | spin_unlock(&state->inode->i_lock); | |
1411 | return ERR_PTR(-ENOENT); | |
1412 | } | |
1413 | ||
4a1c0893 TM |
1414 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1415 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1416 | { |
1417 | struct nfs4_opendata *opendata; | |
1418 | ||
4a1c0893 | 1419 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1420 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1421 | if (opendata == NULL) |
1422 | return ERR_PTR(-ENOMEM); | |
1423 | opendata->state = state; | |
1424 | atomic_inc(&state->count); | |
1425 | return opendata; | |
1426 | } | |
1427 | ||
dc0b027d | 1428 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1429 | { |
2ced46c2 | 1430 | struct nfs4_state *newstate; |
864472e9 TM |
1431 | int ret; |
1432 | ||
dc0b027d TM |
1433 | opendata->o_arg.open_flags = 0; |
1434 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1435 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1436 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1437 | nfs4_init_opendata_res(opendata); | |
b257957e | 1438 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1439 | if (ret != 0) |
1440 | return ret; | |
2ced46c2 | 1441 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1442 | if (IS_ERR(newstate)) |
1443 | return PTR_ERR(newstate); | |
643168c2 | 1444 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1445 | *res = newstate; |
864472e9 TM |
1446 | return 0; |
1447 | } | |
1448 | ||
1449 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1450 | { | |
864472e9 | 1451 | struct nfs4_state *newstate; |
864472e9 TM |
1452 | int ret; |
1453 | ||
1454 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1455 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1456 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1457 | smp_rmb(); |
1458 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1459 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1460 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1461 | if (ret != 0) |
1462 | return ret; | |
2ced46c2 TM |
1463 | if (newstate != state) |
1464 | return -ESTALE; | |
864472e9 TM |
1465 | } |
1466 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1467 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1468 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1469 | if (ret != 0) |
1470 | return ret; | |
2ced46c2 TM |
1471 | if (newstate != state) |
1472 | return -ESTALE; | |
864472e9 TM |
1473 | } |
1474 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1475 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1476 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1477 | if (ret != 0) |
1478 | return ret; | |
2ced46c2 TM |
1479 | if (newstate != state) |
1480 | return -ESTALE; | |
864472e9 | 1481 | } |
1ac7e2fd TM |
1482 | /* |
1483 | * We may have performed cached opens for all three recoveries. | |
1484 | * Check if we need to update the current stateid. | |
1485 | */ | |
1486 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1487 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1488 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1489 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1490 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1491 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1492 | } |
864472e9 TM |
1493 | return 0; |
1494 | } | |
1495 | ||
1da177e4 LT |
1496 | /* |
1497 | * OPEN_RECLAIM: | |
1498 | * reclaim state on the server after a reboot. | |
1da177e4 | 1499 | */ |
539cd03a | 1500 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1501 | { |
1ac7e2fd | 1502 | struct nfs_delegation *delegation; |
864472e9 | 1503 | struct nfs4_opendata *opendata; |
dc0b027d | 1504 | fmode_t delegation_type = 0; |
1da177e4 LT |
1505 | int status; |
1506 | ||
4a1c0893 TM |
1507 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1508 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1509 | if (IS_ERR(opendata)) |
1510 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1511 | rcu_read_lock(); |
1512 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1513 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1514 | delegation_type = delegation->type; |
1ac7e2fd | 1515 | rcu_read_unlock(); |
864472e9 TM |
1516 | opendata->o_arg.u.delegation_type = delegation_type; |
1517 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1518 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1519 | return status; |
1520 | } | |
1521 | ||
539cd03a | 1522 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1523 | { |
1524 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1525 | struct nfs4_exception exception = { }; | |
1526 | int err; | |
1527 | do { | |
539cd03a | 1528 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1529 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1530 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1531 | continue; | |
168667c4 | 1532 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1533 | break; |
1534 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1535 | } while (exception.retry); |
1536 | return err; | |
1537 | } | |
1538 | ||
864472e9 TM |
1539 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1540 | { | |
1541 | struct nfs_open_context *ctx; | |
1542 | int ret; | |
1543 | ||
1544 | ctx = nfs4_state_find_open_context(state); | |
1545 | if (IS_ERR(ctx)) | |
91876b13 | 1546 | return -EAGAIN; |
539cd03a | 1547 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1548 | put_nfs_open_context(ctx); |
1549 | return ret; | |
1550 | } | |
1551 | ||
db4f2e63 | 1552 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1553 | { |
be76b5b6 TM |
1554 | switch (err) { |
1555 | default: | |
1556 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1557 | "%d.\n", __func__, err); | |
1558 | case 0: | |
1559 | case -ENOENT: | |
1560 | case -ESTALE: | |
1561 | break; | |
1562 | case -NFS4ERR_BADSESSION: | |
1563 | case -NFS4ERR_BADSLOT: | |
1564 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1565 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1566 | case -NFS4ERR_DEADSESSION: | |
1567 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1568 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1569 | return -EAGAIN; | |
1570 | case -NFS4ERR_STALE_CLIENTID: | |
1571 | case -NFS4ERR_STALE_STATEID: | |
1572 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1573 | case -NFS4ERR_EXPIRED: | |
1574 | /* Don't recall a delegation if it was lost */ | |
1575 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1576 | return -EAGAIN; | |
1577 | case -NFS4ERR_DELEG_REVOKED: | |
1578 | case -NFS4ERR_ADMIN_REVOKED: | |
1579 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1580 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1581 | nfs_inode_find_state_and_recover(state->inode, |
1582 | stateid); | |
1583 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1584 | return 0; |
1585 | case -NFS4ERR_DELAY: | |
1586 | case -NFS4ERR_GRACE: | |
1587 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1588 | ssleep(1); | |
1589 | return -EAGAIN; | |
db4f2e63 TM |
1590 | case -ENOMEM: |
1591 | case -NFS4ERR_DENIED: | |
1592 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1593 | return 0; | |
be76b5b6 | 1594 | } |
1da177e4 LT |
1595 | return err; |
1596 | } | |
1597 | ||
db4f2e63 TM |
1598 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1599 | { | |
1600 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1601 | struct nfs4_opendata *opendata; | |
1602 | int err; | |
1603 | ||
1604 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1605 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1606 | if (IS_ERR(opendata)) | |
1607 | return PTR_ERR(opendata); | |
1608 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1609 | err = nfs4_open_recover(opendata, state); | |
1610 | nfs4_opendata_put(opendata); | |
1611 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1612 | } | |
1613 | ||
be05c860 CL |
1614 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1615 | { | |
1616 | struct nfs4_opendata *data = calldata; | |
1617 | ||
1618 | nfs40_setup_sequence(data->o_arg.server, &data->o_arg.seq_args, | |
1619 | &data->o_res.seq_res, task); | |
1620 | } | |
1621 | ||
cdd4e68b TM |
1622 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1623 | { | |
1624 | struct nfs4_opendata *data = calldata; | |
1625 | ||
be05c860 CL |
1626 | nfs40_sequence_done(task, &data->o_res.seq_res); |
1627 | ||
cdd4e68b | 1628 | data->rpc_status = task->tk_status; |
26e976a8 | 1629 | if (data->rpc_status == 0) { |
f597c537 | 1630 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1631 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1632 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1633 | data->rpc_done = 1; |
26e976a8 | 1634 | } |
cdd4e68b TM |
1635 | } |
1636 | ||
1637 | static void nfs4_open_confirm_release(void *calldata) | |
1638 | { | |
1639 | struct nfs4_opendata *data = calldata; | |
1640 | struct nfs4_state *state = NULL; | |
1641 | ||
1642 | /* If this request hasn't been cancelled, do nothing */ | |
1643 | if (data->cancelled == 0) | |
1644 | goto out_free; | |
1645 | /* In case of error, no cleanup! */ | |
3e309914 | 1646 | if (!data->rpc_done) |
cdd4e68b | 1647 | goto out_free; |
cdd4e68b | 1648 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1649 | if (!IS_ERR(state)) |
643168c2 | 1650 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1651 | out_free: |
c6d00e63 | 1652 | nfs4_opendata_put(data); |
cdd4e68b TM |
1653 | } |
1654 | ||
1655 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1656 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1657 | .rpc_call_done = nfs4_open_confirm_done, |
1658 | .rpc_release = nfs4_open_confirm_release, | |
1659 | }; | |
1660 | ||
1661 | /* | |
1662 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1663 | */ | |
1664 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1665 | { | |
1666 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1667 | struct rpc_task *task; | |
5138fde0 TM |
1668 | struct rpc_message msg = { |
1669 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1670 | .rpc_argp = &data->c_arg, | |
1671 | .rpc_resp = &data->c_res, | |
1672 | .rpc_cred = data->owner->so_cred, | |
1673 | }; | |
c970aa85 TM |
1674 | struct rpc_task_setup task_setup_data = { |
1675 | .rpc_client = server->client, | |
5138fde0 | 1676 | .rpc_message = &msg, |
c970aa85 TM |
1677 | .callback_ops = &nfs4_open_confirm_ops, |
1678 | .callback_data = data, | |
101070ca | 1679 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1680 | .flags = RPC_TASK_ASYNC, |
1681 | }; | |
1da177e4 LT |
1682 | int status; |
1683 | ||
be05c860 | 1684 | nfs4_init_sequence(&data->o_arg.seq_args, &data->o_res.seq_res, 1); |
c6d00e63 | 1685 | kref_get(&data->kref); |
3e309914 TM |
1686 | data->rpc_done = 0; |
1687 | data->rpc_status = 0; | |
5138fde0 | 1688 | data->timestamp = jiffies; |
c970aa85 | 1689 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1690 | if (IS_ERR(task)) |
cdd4e68b | 1691 | return PTR_ERR(task); |
cdd4e68b TM |
1692 | status = nfs4_wait_for_completion_rpc_task(task); |
1693 | if (status != 0) { | |
1694 | data->cancelled = 1; | |
1695 | smp_wmb(); | |
1696 | } else | |
1697 | status = data->rpc_status; | |
e6b3c4db | 1698 | rpc_put_task(task); |
1da177e4 LT |
1699 | return status; |
1700 | } | |
1701 | ||
24ac23ab | 1702 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1703 | { |
24ac23ab TM |
1704 | struct nfs4_opendata *data = calldata; |
1705 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1706 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1707 | |
24ac23ab | 1708 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1709 | goto out_wait; |
aac00a8d TM |
1710 | /* |
1711 | * Check if we still need to send an OPEN call, or if we can use | |
1712 | * a delegation instead. | |
1713 | */ | |
1714 | if (data->state != NULL) { | |
1715 | struct nfs_delegation *delegation; | |
1716 | ||
dc0b027d | 1717 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1718 | goto out_no_action; |
aac00a8d TM |
1719 | rcu_read_lock(); |
1720 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1721 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1722 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1723 | can_open_delegated(delegation, data->o_arg.fmode)) |
1724 | goto unlock_no_action; | |
aac00a8d TM |
1725 | rcu_read_unlock(); |
1726 | } | |
95b72eb0 | 1727 | /* Update client id. */ |
549b19cc | 1728 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1729 | switch (data->o_arg.claim) { |
1730 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1731 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1732 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1733 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1734 | case NFS4_OPEN_CLAIM_FH: |
1735 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1736 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1737 | } | |
26e976a8 | 1738 | data->timestamp = jiffies; |
035168ab | 1739 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1740 | &data->o_arg.seq_args, |
2240a9e2 TM |
1741 | &data->o_res.seq_res, |
1742 | task) != 0) | |
1743 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1744 | |
1745 | /* Set the create mode (note dependency on the session type) */ | |
1746 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1747 | if (data->o_arg.open_flags & O_EXCL) { | |
1748 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1749 | if (nfs4_has_persistent_session(clp)) | |
1750 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1751 | else if (clp->cl_mvops->minor_version > 0) | |
1752 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1753 | } | |
6ee41268 | 1754 | return; |
652f89f6 TM |
1755 | unlock_no_action: |
1756 | rcu_read_unlock(); | |
6ee41268 TM |
1757 | out_no_action: |
1758 | task->tk_action = NULL; | |
c8da19b9 | 1759 | out_wait: |
b75ad4cd | 1760 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1761 | } |
1762 | ||
24ac23ab TM |
1763 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1764 | { | |
1765 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1766 | |
24ac23ab | 1767 | data->rpc_status = task->tk_status; |
d898528c | 1768 | |
14516c3a TM |
1769 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1770 | return; | |
d898528c | 1771 | |
24ac23ab | 1772 | if (task->tk_status == 0) { |
807d66d8 TM |
1773 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1774 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1775 | case S_IFREG: |
1776 | break; | |
1777 | case S_IFLNK: | |
24ac23ab | 1778 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1779 | break; |
1780 | case S_IFDIR: | |
24ac23ab | 1781 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1782 | break; |
1783 | default: | |
24ac23ab | 1784 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1785 | } |
6f926b5b | 1786 | } |
26e976a8 | 1787 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1788 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1789 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1790 | } |
3e309914 | 1791 | data->rpc_done = 1; |
24ac23ab | 1792 | } |
6f926b5b | 1793 | |
24ac23ab TM |
1794 | static void nfs4_open_release(void *calldata) |
1795 | { | |
1796 | struct nfs4_opendata *data = calldata; | |
1797 | struct nfs4_state *state = NULL; | |
1798 | ||
1799 | /* If this request hasn't been cancelled, do nothing */ | |
1800 | if (data->cancelled == 0) | |
1801 | goto out_free; | |
1802 | /* In case of error, no cleanup! */ | |
3e309914 | 1803 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1804 | goto out_free; |
1805 | /* In case we need an open_confirm, no cleanup! */ | |
1806 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1807 | goto out_free; | |
24ac23ab | 1808 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1809 | if (!IS_ERR(state)) |
643168c2 | 1810 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1811 | out_free: |
c6d00e63 | 1812 | nfs4_opendata_put(data); |
24ac23ab TM |
1813 | } |
1814 | ||
1815 | static const struct rpc_call_ops nfs4_open_ops = { | |
1816 | .rpc_call_prepare = nfs4_open_prepare, | |
1817 | .rpc_call_done = nfs4_open_done, | |
1818 | .rpc_release = nfs4_open_release, | |
1819 | }; | |
1820 | ||
b257957e | 1821 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1822 | { |
1823 | struct inode *dir = data->dir->d_inode; | |
1824 | struct nfs_server *server = NFS_SERVER(dir); | |
1825 | struct nfs_openargs *o_arg = &data->o_arg; | |
1826 | struct nfs_openres *o_res = &data->o_res; | |
1827 | struct rpc_task *task; | |
5138fde0 TM |
1828 | struct rpc_message msg = { |
1829 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1830 | .rpc_argp = o_arg, | |
1831 | .rpc_resp = o_res, | |
1832 | .rpc_cred = data->owner->so_cred, | |
1833 | }; | |
c970aa85 TM |
1834 | struct rpc_task_setup task_setup_data = { |
1835 | .rpc_client = server->client, | |
5138fde0 | 1836 | .rpc_message = &msg, |
c970aa85 TM |
1837 | .callback_ops = &nfs4_open_ops, |
1838 | .callback_data = data, | |
101070ca | 1839 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1840 | .flags = RPC_TASK_ASYNC, |
1841 | }; | |
24ac23ab TM |
1842 | int status; |
1843 | ||
a9c92d6b | 1844 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1845 | kref_get(&data->kref); |
3e309914 TM |
1846 | data->rpc_done = 0; |
1847 | data->rpc_status = 0; | |
2ced46c2 | 1848 | data->cancelled = 0; |
bdeca1b7 TM |
1849 | data->is_recover = 0; |
1850 | if (isrecover) { | |
8fe72bac | 1851 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1852 | data->is_recover = 1; |
1853 | } | |
c970aa85 | 1854 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1855 | if (IS_ERR(task)) |
1856 | return PTR_ERR(task); | |
1857 | status = nfs4_wait_for_completion_rpc_task(task); | |
1858 | if (status != 0) { | |
1859 | data->cancelled = 1; | |
1860 | smp_wmb(); | |
1861 | } else | |
1862 | status = data->rpc_status; | |
1863 | rpc_put_task(task); | |
1864 | ||
1865 | return status; | |
1866 | } | |
1867 | ||
1868 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1869 | { | |
1870 | struct inode *dir = data->dir->d_inode; | |
1871 | struct nfs_openres *o_res = &data->o_res; | |
1872 | int status; | |
1873 | ||
1874 | status = nfs4_run_open_task(data, 1); | |
1875 | if (status != 0 || !data->rpc_done) | |
1876 | return status; | |
1877 | ||
6926afd1 TM |
1878 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1879 | ||
b257957e AB |
1880 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1881 | status = _nfs4_proc_open_confirm(data); | |
1882 | if (status != 0) | |
1883 | return status; | |
1884 | } | |
1885 | ||
1886 | return status; | |
1887 | } | |
1888 | ||
6168f62c WAA |
1889 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1890 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1891 | struct nfs4_state *state, fmode_t fmode, |
1892 | int openflags) | |
6168f62c WAA |
1893 | { |
1894 | struct nfs_access_entry cache; | |
1895 | u32 mask; | |
1896 | ||
1897 | /* access call failed or for some reason the server doesn't | |
1898 | * support any access modes -- defer access call until later */ | |
1899 | if (opendata->o_res.access_supported == 0) | |
1900 | return 0; | |
1901 | ||
1902 | mask = 0; | |
bbd3a8ee | 1903 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1904 | * write mode bits, but POSIX allows the creating process to write. |
1905 | * use openflags to check for exec, because fmode won't | |
1906 | * always have FMODE_EXEC set when file open for exec. */ | |
1907 | if (openflags & __FMODE_EXEC) { | |
1908 | /* ONLY check for exec rights */ | |
1909 | mask = MAY_EXEC; | |
1910 | } else if (fmode & FMODE_READ) | |
1911 | mask = MAY_READ; | |
6168f62c WAA |
1912 | |
1913 | cache.cred = cred; | |
1914 | cache.jiffies = jiffies; | |
1915 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1916 | nfs_access_add_cache(state->inode, &cache); | |
1917 | ||
bbd3a8ee | 1918 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1919 | return 0; |
1920 | ||
1921 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1922 | nfs4_close_state(state, fmode); | |
998f40b5 | 1923 | return -EACCES; |
6168f62c WAA |
1924 | } |
1925 | ||
b257957e AB |
1926 | /* |
1927 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1928 | */ | |
1929 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1930 | { | |
1931 | struct inode *dir = data->dir->d_inode; | |
1932 | struct nfs_server *server = NFS_SERVER(dir); | |
1933 | struct nfs_openargs *o_arg = &data->o_arg; | |
1934 | struct nfs_openres *o_res = &data->o_res; | |
1935 | int status; | |
1936 | ||
1937 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1938 | if (!data->rpc_done) |
1939 | return status; | |
1940 | if (status != 0) { | |
1941 | if (status == -NFS4ERR_BADNAME && | |
1942 | !(o_arg->open_flags & O_CREAT)) | |
1943 | return -ENOENT; | |
24ac23ab | 1944 | return status; |
08ef7bd3 | 1945 | } |
24ac23ab | 1946 | |
6926afd1 TM |
1947 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1948 | ||
90ff0c54 | 1949 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1950 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1951 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1952 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1953 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1954 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1955 | if (status != 0) |
24ac23ab | 1956 | return status; |
1da177e4 LT |
1957 | } |
1958 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 1959 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 1960 | return 0; |
1da177e4 LT |
1961 | } |
1962 | ||
d83217c1 AA |
1963 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1964 | { | |
1965 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1966 | } | |
1967 | ||
1da177e4 LT |
1968 | /* |
1969 | * OPEN_EXPIRED: | |
1970 | * reclaim state on the server after a network partition. | |
1971 | * Assumes caller holds the appropriate lock | |
1972 | */ | |
539cd03a | 1973 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1974 | { |
e56e0b78 | 1975 | struct nfs4_opendata *opendata; |
864472e9 | 1976 | int ret; |
1da177e4 | 1977 | |
4a1c0893 | 1978 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1979 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1980 | if (IS_ERR(opendata)) |
1981 | return PTR_ERR(opendata); | |
864472e9 | 1982 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1983 | if (ret == -ESTALE) |
3d4ff43d | 1984 | d_drop(ctx->dentry); |
c6d00e63 | 1985 | nfs4_opendata_put(opendata); |
864472e9 | 1986 | return ret; |
1da177e4 LT |
1987 | } |
1988 | ||
a9ed2e25 | 1989 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1990 | { |
539cd03a | 1991 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1992 | struct nfs4_exception exception = { }; |
1993 | int err; | |
1994 | ||
1995 | do { | |
539cd03a | 1996 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 1997 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
1998 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1999 | continue; | |
a9ed2e25 TM |
2000 | switch (err) { |
2001 | default: | |
2002 | goto out; | |
2003 | case -NFS4ERR_GRACE: | |
2004 | case -NFS4ERR_DELAY: | |
2005 | nfs4_handle_exception(server, err, &exception); | |
2006 | err = 0; | |
2007 | } | |
202b50dc | 2008 | } while (exception.retry); |
a9ed2e25 | 2009 | out: |
202b50dc TM |
2010 | return err; |
2011 | } | |
2012 | ||
1da177e4 LT |
2013 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2014 | { | |
1da177e4 | 2015 | struct nfs_open_context *ctx; |
864472e9 | 2016 | int ret; |
1da177e4 | 2017 | |
864472e9 TM |
2018 | ctx = nfs4_state_find_open_context(state); |
2019 | if (IS_ERR(ctx)) | |
91876b13 | 2020 | return -EAGAIN; |
539cd03a | 2021 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2022 | put_nfs_open_context(ctx); |
2023 | return ret; | |
1da177e4 LT |
2024 | } |
2025 | ||
f062eb6c | 2026 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 2027 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2028 | { |
f062eb6c | 2029 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 2030 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
2031 | struct nfs_delegation *delegation; |
2032 | struct rpc_cred *cred = NULL; | |
2033 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
2034 | |
2035 | /* If a state reset has been done, test_stateid is unneeded */ | |
2036 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
2037 | return; | |
2038 | ||
ab7cb0df TM |
2039 | /* Get the delegation credential for use by test/free_stateid */ |
2040 | rcu_read_lock(); | |
2041 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
2042 | if (delegation != NULL && | |
2043 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
2044 | cred = get_rpccred(delegation->cred); | |
2045 | rcu_read_unlock(); | |
2046 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 2047 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
2048 | } else |
2049 | rcu_read_unlock(); | |
2050 | ||
3e60ffdd CL |
2051 | if (status != NFS_OK) { |
2052 | /* Free the stateid unless the server explicitly | |
2053 | * informs us the stateid is unrecognized. */ | |
2054 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2055 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 2056 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2057 | |
6938867e BS |
2058 | write_seqlock(&state->seqlock); |
2059 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2060 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2061 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2062 | } | |
ab7cb0df TM |
2063 | |
2064 | if (cred != NULL) | |
2065 | put_rpccred(cred); | |
3e60ffdd CL |
2066 | } |
2067 | ||
2068 | /** | |
2069 | * nfs41_check_open_stateid - possibly free an open stateid | |
2070 | * | |
2071 | * @state: NFSv4 state for an inode | |
2072 | * | |
2073 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2074 | * Otherwise a negative NFS4ERR value is returned. | |
2075 | */ | |
2076 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2077 | { | |
2078 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2079 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2080 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2081 | int status; |
2082 | ||
2083 | /* If a state reset has been done, test_stateid is unneeded */ | |
2084 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2085 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2086 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2087 | return -NFS4ERR_BAD_STATEID; | |
2088 | ||
ab7cb0df | 2089 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2090 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2091 | if (status != NFS_OK) { |
2092 | /* Free the stateid unless the server explicitly | |
2093 | * informs us the stateid is unrecognized. */ | |
2094 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2095 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2096 | |
2097 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2098 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2099 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2100 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2101 | } |
2102 | return status; | |
2103 | } | |
2104 | ||
2105 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2106 | { | |
eb64cf96 | 2107 | int status; |
b01dd1d8 | 2108 | |
3e60ffdd CL |
2109 | nfs41_clear_delegation_stateid(state); |
2110 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2111 | if (status != NFS_OK) |
2112 | status = nfs4_open_expired(sp, state); | |
2113 | return status; | |
f062eb6c BS |
2114 | } |
2115 | #endif | |
2116 | ||
aa53ed54 JL |
2117 | /* |
2118 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2119 | * fields corresponding to attributes that were used to store the verifier. | |
2120 | * Make sure we clobber those fields in the later setattr call | |
2121 | */ | |
2122 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2123 | { | |
2124 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2125 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2126 | sattr->ia_valid |= ATTR_ATIME; | |
2127 | ||
2128 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2129 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2130 | sattr->ia_valid |= ATTR_MTIME; | |
2131 | } | |
2132 | ||
c21443c2 TM |
2133 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2134 | fmode_t fmode, | |
2135 | int flags, | |
3efb9722 | 2136 | struct nfs_open_context *ctx) |
c21443c2 TM |
2137 | { |
2138 | struct nfs4_state_owner *sp = opendata->owner; | |
2139 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2140 | struct dentry *dentry; |
c21443c2 TM |
2141 | struct nfs4_state *state; |
2142 | unsigned int seq; | |
2143 | int ret; | |
2144 | ||
2145 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2146 | ||
2147 | ret = _nfs4_proc_open(opendata); | |
2148 | if (ret != 0) | |
2149 | goto out; | |
2150 | ||
2151 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2152 | ret = PTR_ERR(state); | |
2153 | if (IS_ERR(state)) | |
2154 | goto out; | |
2155 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2156 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2157 | ||
275bb307 TM |
2158 | dentry = opendata->dentry; |
2159 | if (dentry->d_inode == NULL) { | |
2160 | /* FIXME: Is this d_drop() ever needed? */ | |
2161 | d_drop(dentry); | |
2162 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2163 | if (dentry == NULL) { | |
2164 | dentry = opendata->dentry; | |
2165 | } else if (dentry != ctx->dentry) { | |
2166 | dput(ctx->dentry); | |
2167 | ctx->dentry = dget(dentry); | |
2168 | } | |
2169 | nfs_set_verifier(dentry, | |
2170 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2171 | } | |
2172 | ||
c21443c2 TM |
2173 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2174 | if (ret != 0) | |
2175 | goto out; | |
2176 | ||
3efb9722 | 2177 | ctx->state = state; |
c45ffdd2 TM |
2178 | if (dentry->d_inode == state->inode) { |
2179 | nfs_inode_attach_open_context(ctx); | |
2180 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2181 | nfs4_schedule_stateid_recovery(server, state); | |
2182 | } | |
c21443c2 TM |
2183 | out: |
2184 | return ret; | |
2185 | } | |
2186 | ||
1da177e4 | 2187 | /* |
24ac23ab | 2188 | * Returns a referenced nfs4_state |
1da177e4 | 2189 | */ |
82be417a | 2190 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2191 | struct nfs_open_context *ctx, |
82be417a AA |
2192 | int flags, |
2193 | struct iattr *sattr, | |
959d921f | 2194 | struct nfs4_label *label) |
1da177e4 LT |
2195 | { |
2196 | struct nfs4_state_owner *sp; | |
2197 | struct nfs4_state *state = NULL; | |
2198 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2199 | struct nfs4_opendata *opendata; |
4197a055 TM |
2200 | struct dentry *dentry = ctx->dentry; |
2201 | struct rpc_cred *cred = ctx->cred; | |
2202 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2203 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2204 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2205 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2206 | int status; |
1da177e4 LT |
2207 | |
2208 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2209 | status = -ENOMEM; |
d1e284d5 TM |
2210 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2211 | if (sp == NULL) { | |
1da177e4 LT |
2212 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2213 | goto out_err; | |
2214 | } | |
58d9714a TM |
2215 | status = nfs4_recover_expired_lease(server); |
2216 | if (status != 0) | |
b4454fe1 | 2217 | goto err_put_state_owner; |
82a2c1b7 AV |
2218 | if (dentry->d_inode != NULL) |
2219 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2220 | status = -ENOMEM; |
49f9a0fa TM |
2221 | if (dentry->d_inode) |
2222 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2223 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2224 | label, claim, GFP_KERNEL); |
e56e0b78 | 2225 | if (opendata == NULL) |
95d35cb4 | 2226 | goto err_put_state_owner; |
1da177e4 | 2227 | |
14c43f76 DQ |
2228 | if (label) { |
2229 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2230 | if (IS_ERR(olabel)) { | |
2231 | status = PTR_ERR(olabel); | |
2232 | goto err_opendata_put; | |
2233 | } | |
2234 | } | |
2235 | ||
82be417a AA |
2236 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2237 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2238 | if (!opendata->f_attr.mdsthreshold) | |
14c43f76 | 2239 | goto err_free_label; |
1549210f | 2240 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2241 | } |
82a2c1b7 AV |
2242 | if (dentry->d_inode != NULL) |
2243 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2244 | |
3efb9722 | 2245 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2246 | if (status != 0) |
14c43f76 | 2247 | goto err_free_label; |
3efb9722 | 2248 | state = ctx->state; |
6168f62c | 2249 | |
549b19cc TM |
2250 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2251 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2252 | nfs4_exclusive_attrset(opendata, sattr); |
2253 | ||
2254 | nfs_fattr_init(opendata->o_res.f_attr); | |
2255 | status = nfs4_do_setattr(state->inode, cred, | |
2256 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2257 | state, label, olabel); |
2258 | if (status == 0) { | |
0ab64e0e | 2259 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2260 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2261 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2262 | } |
0ab64e0e | 2263 | } |
82be417a AA |
2264 | |
2265 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2266 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2267 | else | |
2268 | kfree(opendata->f_attr.mdsthreshold); | |
2269 | opendata->f_attr.mdsthreshold = NULL; | |
2270 | ||
14c43f76 DQ |
2271 | nfs4_label_free(olabel); |
2272 | ||
c6d00e63 | 2273 | nfs4_opendata_put(opendata); |
1da177e4 | 2274 | nfs4_put_state_owner(sp); |
1da177e4 | 2275 | return 0; |
14c43f76 DQ |
2276 | err_free_label: |
2277 | nfs4_label_free(olabel); | |
c6d00e63 | 2278 | err_opendata_put: |
82be417a | 2279 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2280 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2281 | err_put_state_owner: |
2282 | nfs4_put_state_owner(sp); | |
1da177e4 | 2283 | out_err: |
1da177e4 LT |
2284 | return status; |
2285 | } | |
2286 | ||
2287 | ||
82be417a | 2288 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2289 | struct nfs_open_context *ctx, |
82be417a AA |
2290 | int flags, |
2291 | struct iattr *sattr, | |
959d921f | 2292 | struct nfs4_label *label) |
1da177e4 | 2293 | { |
49f9a0fa | 2294 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2295 | struct nfs4_exception exception = { }; |
2296 | struct nfs4_state *res; | |
2297 | int status; | |
2298 | ||
2299 | do { | |
959d921f | 2300 | status = _nfs4_do_open(dir, ctx, flags, sattr, label); |
3efb9722 | 2301 | res = ctx->state; |
42113a75 | 2302 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2303 | if (status == 0) |
2304 | break; | |
2305 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2306 | * book-keeping w.r.t. state-changing operations | |
2307 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2308 | * It is actually a sign of a bug on the client or on the server. | |
2309 | * | |
2310 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2311 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2312 | * have unhashed the old state_owner for us, and that we can |
2313 | * therefore safely retry using a new one. We should still warn | |
2314 | * the user though... | |
2315 | */ | |
2316 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2317 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2318 | " returned a bad sequence-id error!\n", |
2319 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2320 | exception.retry = 1; |
2321 | continue; | |
2322 | } | |
550f5747 TM |
2323 | /* |
2324 | * BAD_STATEID on OPEN means that the server cancelled our | |
2325 | * state before it received the OPEN_CONFIRM. | |
2326 | * Recover by retrying the request as per the discussion | |
2327 | * on Page 181 of RFC3530. | |
2328 | */ | |
2329 | if (status == -NFS4ERR_BAD_STATEID) { | |
2330 | exception.retry = 1; | |
2331 | continue; | |
2332 | } | |
aac00a8d TM |
2333 | if (status == -EAGAIN) { |
2334 | /* We must have found a delegation */ | |
2335 | exception.retry = 1; | |
2336 | continue; | |
2337 | } | |
49f9a0fa TM |
2338 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2339 | continue; | |
2340 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2341 | status, &exception)); |
2342 | } while (exception.retry); | |
2343 | return res; | |
2344 | } | |
2345 | ||
659bfcd6 TM |
2346 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2347 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2348 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2349 | struct nfs4_label *olabel) | |
1da177e4 | 2350 | { |
3e4f6290 | 2351 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2352 | struct nfs_setattrargs arg = { |
3e4f6290 | 2353 | .fh = NFS_FH(inode), |
1da177e4 LT |
2354 | .iap = sattr, |
2355 | .server = server, | |
2356 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2357 | .label = ilabel, |
1da177e4 LT |
2358 | }; |
2359 | struct nfs_setattrres res = { | |
2360 | .fattr = fattr, | |
1775fd3e | 2361 | .label = olabel, |
1da177e4 LT |
2362 | .server = server, |
2363 | }; | |
2364 | struct rpc_message msg = { | |
659bfcd6 TM |
2365 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2366 | .rpc_argp = &arg, | |
2367 | .rpc_resp = &res, | |
2368 | .rpc_cred = cred, | |
1da177e4 | 2369 | }; |
26e976a8 | 2370 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2371 | fmode_t fmode; |
2372 | bool truncate; | |
65e4308d | 2373 | int status; |
1da177e4 | 2374 | |
aa9c2669 DQ |
2375 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2376 | if (ilabel) | |
2377 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2378 | ||
0e574af1 | 2379 | nfs_fattr_init(fattr); |
1da177e4 | 2380 | |
ee3ae84e TM |
2381 | /* Servers should only apply open mode checks for file size changes */ |
2382 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2383 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2384 | ||
2385 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2386 | /* Use that stateid */ | |
2387 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2388 | struct nfs_lockowner lockowner = { |
2389 | .l_owner = current->files, | |
2390 | .l_pid = current->tgid, | |
2391 | }; | |
4fc8796d | 2392 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2393 | &lockowner); |
08e9eac4 | 2394 | } else |
f597c537 | 2395 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2396 | |
7c513058 | 2397 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2398 | if (status == 0 && state != NULL) |
2399 | renew_lease(server, timestamp); | |
65e4308d | 2400 | return status; |
1da177e4 LT |
2401 | } |
2402 | ||
659bfcd6 TM |
2403 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2404 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2405 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2406 | struct nfs4_label *olabel) | |
1da177e4 | 2407 | { |
3e4f6290 | 2408 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2409 | struct nfs4_exception exception = { |
2410 | .state = state, | |
3114ea7a | 2411 | .inode = inode, |
a1d0b5ee | 2412 | }; |
1da177e4 LT |
2413 | int err; |
2414 | do { | |
1775fd3e | 2415 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2416 | trace_nfs4_setattr(inode, err); |
451146be TM |
2417 | switch (err) { |
2418 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2419 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2420 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2421 | "applying open mode checks to " | |
2422 | "a SETATTR that is not " | |
2423 | "changing file size.\n", | |
2424 | server->nfs_client->cl_hostname); | |
2425 | } | |
451146be TM |
2426 | if (state && !(state->state & FMODE_WRITE)) { |
2427 | err = -EBADF; | |
2428 | if (sattr->ia_valid & ATTR_OPEN) | |
2429 | err = -EACCES; | |
2430 | goto out; | |
2431 | } | |
2432 | } | |
2433 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2434 | } while (exception.retry); |
451146be | 2435 | out: |
1da177e4 LT |
2436 | return err; |
2437 | } | |
2438 | ||
2439 | struct nfs4_closedata { | |
2440 | struct inode *inode; | |
2441 | struct nfs4_state *state; | |
2442 | struct nfs_closeargs arg; | |
2443 | struct nfs_closeres res; | |
516a6af6 | 2444 | struct nfs_fattr fattr; |
26e976a8 | 2445 | unsigned long timestamp; |
f7e8917a FI |
2446 | bool roc; |
2447 | u32 roc_barrier; | |
1da177e4 LT |
2448 | }; |
2449 | ||
963d8fe5 | 2450 | static void nfs4_free_closedata(void *data) |
9512135d | 2451 | { |
963d8fe5 TM |
2452 | struct nfs4_closedata *calldata = data; |
2453 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2454 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2455 | |
f7e8917a FI |
2456 | if (calldata->roc) |
2457 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2458 | nfs4_put_open_state(calldata->state); |
2459 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2460 | nfs4_put_state_owner(sp); |
322b2b90 | 2461 | nfs_sb_deactive(sb); |
9512135d TM |
2462 | kfree(calldata); |
2463 | } | |
2464 | ||
88069f77 TM |
2465 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2466 | fmode_t fmode) | |
2467 | { | |
2468 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2469 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2470 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2471 | case FMODE_WRITE: | |
88069f77 | 2472 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2473 | break; |
2474 | case FMODE_READ: | |
88069f77 | 2475 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2476 | break; |
2477 | case 0: | |
2478 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2479 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2480 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2481 | } | |
88069f77 TM |
2482 | spin_unlock(&state->owner->so_lock); |
2483 | } | |
2484 | ||
963d8fe5 | 2485 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2486 | { |
963d8fe5 | 2487 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2488 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2489 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2490 | ||
a3ca5651 | 2491 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2492 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2493 | return; | |
42113a75 | 2494 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2495 | /* hmm. we are done with the inode, and in the process of freeing |
2496 | * the state_owner. we keep this around to process errors | |
2497 | */ | |
1da177e4 LT |
2498 | switch (task->tk_status) { |
2499 | case 0: | |
f7e8917a FI |
2500 | if (calldata->roc) |
2501 | pnfs_roc_set_barrier(state->inode, | |
2502 | calldata->roc_barrier); | |
45328c35 | 2503 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2504 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2505 | nfs4_close_clear_stateid_flags(state, |
2506 | calldata->arg.fmode); | |
1da177e4 LT |
2507 | break; |
2508 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2509 | case -NFS4ERR_OLD_STATEID: |
2510 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2511 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2512 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2513 | break; |
1da177e4 | 2514 | default: |
72211dbe TM |
2515 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2516 | rpc_restart_call_prepare(task); | |
1da177e4 | 2517 | } |
72211dbe | 2518 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2519 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2520 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2521 | } |
2522 | ||
4ce70ada | 2523 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2524 | { |
4ce70ada | 2525 | struct nfs4_closedata *calldata = data; |
9512135d | 2526 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2527 | struct inode *inode = calldata->inode; |
88069f77 | 2528 | int call_close = 0; |
9512135d | 2529 | |
a3ca5651 | 2530 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2531 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2532 | goto out_wait; |
003707c7 | 2533 | |
88069f77 TM |
2534 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2535 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2536 | spin_lock(&state->owner->so_lock); |
003707c7 | 2537 | /* Calculate the change in open mode */ |
e7616923 | 2538 | if (state->n_rdwr == 0) { |
003707c7 | 2539 | if (state->n_rdonly == 0) { |
88069f77 TM |
2540 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2541 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2542 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2543 | } |
2544 | if (state->n_wronly == 0) { | |
88069f77 TM |
2545 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2546 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2547 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2548 | } |
e7616923 | 2549 | } |
5d422301 TM |
2550 | if (!nfs4_valid_open_stateid(state)) |
2551 | call_close = 0; | |
4cecb76f | 2552 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2553 | |
2554 | if (!call_close) { | |
963d8fe5 | 2555 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2556 | goto out_no_action; |
9512135d | 2557 | } |
88069f77 | 2558 | |
f7e8917a | 2559 | if (calldata->arg.fmode == 0) { |
88069f77 | 2560 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2561 | if (calldata->roc && |
b9536ad5 AA |
2562 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2563 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2564 | goto out_wait; |
b9536ad5 | 2565 | } |
f7e8917a | 2566 | } |
88069f77 | 2567 | |
516a6af6 | 2568 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2569 | calldata->timestamp = jiffies; |
7fdab069 | 2570 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2571 | &calldata->arg.seq_args, |
2572 | &calldata->res.seq_res, | |
2240a9e2 TM |
2573 | task) != 0) |
2574 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2575 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2576 | return; |
2577 | out_no_action: | |
2578 | task->tk_action = NULL; | |
2579 | out_wait: | |
2580 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2581 | } |
2582 | ||
963d8fe5 | 2583 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2584 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2585 | .rpc_call_done = nfs4_close_done, |
2586 | .rpc_release = nfs4_free_closedata, | |
2587 | }; | |
2588 | ||
1da177e4 LT |
2589 | /* |
2590 | * It is possible for data to be read/written from a mem-mapped file | |
2591 | * after the sys_close call (which hits the vfs layer as a flush). | |
2592 | * This means that we can't safely call nfsv4 close on a file until | |
2593 | * the inode is cleared. This in turn means that we are not good | |
2594 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2595 | * share state even when we are done with one of the three share | |
2596 | * stateid's in the inode. | |
2597 | * | |
2598 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2599 | */ | |
1f7977c1 | 2600 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2601 | { |
4a35bd41 | 2602 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2603 | struct nfs4_closedata *calldata; |
b39e625b TM |
2604 | struct nfs4_state_owner *sp = state->owner; |
2605 | struct rpc_task *task; | |
5138fde0 TM |
2606 | struct rpc_message msg = { |
2607 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2608 | .rpc_cred = state->owner->so_cred, | |
2609 | }; | |
c970aa85 TM |
2610 | struct rpc_task_setup task_setup_data = { |
2611 | .rpc_client = server->client, | |
5138fde0 | 2612 | .rpc_message = &msg, |
c970aa85 | 2613 | .callback_ops = &nfs4_close_ops, |
101070ca | 2614 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2615 | .flags = RPC_TASK_ASYNC, |
2616 | }; | |
9512135d | 2617 | int status = -ENOMEM; |
1da177e4 | 2618 | |
fa940720 WAA |
2619 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2620 | &task_setup_data.rpc_client, &msg); | |
2621 | ||
8535b2be | 2622 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2623 | if (calldata == NULL) |
9512135d | 2624 | goto out; |
a9c92d6b | 2625 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2626 | calldata->inode = state->inode; |
1da177e4 | 2627 | calldata->state = state; |
4a35bd41 | 2628 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2629 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2630 | /* Serialization for the sequence id */ |
8535b2be | 2631 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2632 | if (calldata->arg.seqid == NULL) |
2633 | goto out_free_calldata; | |
dc0b027d | 2634 | calldata->arg.fmode = 0; |
a65318bf | 2635 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2636 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2637 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2638 | calldata->res.server = server; |
1f7977c1 | 2639 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2640 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2641 | |
1174dd1f TM |
2642 | msg.rpc_argp = &calldata->arg; |
2643 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2644 | task_setup_data.callback_data = calldata; |
2645 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2646 | if (IS_ERR(task)) |
2647 | return PTR_ERR(task); | |
a49c3c77 TM |
2648 | status = 0; |
2649 | if (wait) | |
2650 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2651 | rpc_put_task(task); |
a49c3c77 | 2652 | return status; |
9512135d TM |
2653 | out_free_calldata: |
2654 | kfree(calldata); | |
2655 | out: | |
b39e625b TM |
2656 | nfs4_put_open_state(state); |
2657 | nfs4_put_state_owner(sp); | |
9512135d | 2658 | return status; |
1da177e4 LT |
2659 | } |
2660 | ||
2b484297 | 2661 | static struct inode * |
cd9a1c0e | 2662 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2663 | { |
1da177e4 | 2664 | struct nfs4_state *state; |
aa9c2669 DQ |
2665 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2666 | ||
2667 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2668 | |
565277f6 | 2669 | /* Protect against concurrent sillydeletes */ |
959d921f | 2670 | state = nfs4_do_open(dir, ctx, open_flags, attr, label); |
aa9c2669 DQ |
2671 | |
2672 | nfs4_label_release_security(label); | |
2673 | ||
f46e0bd3 TM |
2674 | if (IS_ERR(state)) |
2675 | return ERR_CAST(state); | |
275bb307 | 2676 | return state->inode; |
1da177e4 LT |
2677 | } |
2678 | ||
1185a552 | 2679 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2680 | { |
2681 | if (ctx->state == NULL) | |
2682 | return; | |
2683 | if (is_sync) | |
643168c2 | 2684 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2685 | else |
643168c2 | 2686 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2687 | } |
1da177e4 LT |
2688 | |
2689 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2690 | { | |
43652ad5 BH |
2691 | struct nfs4_server_caps_arg args = { |
2692 | .fhandle = fhandle, | |
2693 | }; | |
1da177e4 LT |
2694 | struct nfs4_server_caps_res res = {}; |
2695 | struct rpc_message msg = { | |
2696 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2697 | .rpc_argp = &args, |
1da177e4 LT |
2698 | .rpc_resp = &res, |
2699 | }; | |
2700 | int status; | |
2701 | ||
7c513058 | 2702 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2703 | if (status == 0) { |
2704 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2705 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2706 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2707 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2708 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2709 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2710 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2711 | server->caps |= NFS_CAP_ACLS; | |
2712 | if (res.has_links != 0) | |
2713 | server->caps |= NFS_CAP_HARDLINKS; | |
2714 | if (res.has_symlinks != 0) | |
2715 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2716 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2717 | server->caps |= NFS_CAP_FILEID; | |
2718 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2719 | server->caps |= NFS_CAP_MODE; | |
2720 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2721 | server->caps |= NFS_CAP_NLINK; | |
2722 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2723 | server->caps |= NFS_CAP_OWNER; | |
2724 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2725 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2726 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2727 | server->caps |= NFS_CAP_ATIME; | |
2728 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2729 | server->caps |= NFS_CAP_CTIME; | |
2730 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2731 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2732 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2733 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2734 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2735 | #endif | |
2736 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2737 | sizeof(server->attr_bitmask)); | |
62ab460c | 2738 | |
aa9c2669 DQ |
2739 | if (server->caps & NFS_CAP_SECURITY_LABEL) { |
2740 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2741 | res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2742 | } | |
a65318bf TM |
2743 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2744 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2745 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2746 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2747 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2748 | } |
cccef3b9 | 2749 | |
1da177e4 LT |
2750 | return status; |
2751 | } | |
2752 | ||
55a97593 | 2753 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2754 | { |
2755 | struct nfs4_exception exception = { }; | |
2756 | int err; | |
2757 | do { | |
2758 | err = nfs4_handle_exception(server, | |
2759 | _nfs4_server_capabilities(server, fhandle), | |
2760 | &exception); | |
2761 | } while (exception.retry); | |
2762 | return err; | |
2763 | } | |
2764 | ||
2765 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2766 | struct nfs_fsinfo *info) | |
2767 | { | |
aa9c2669 | 2768 | u32 bitmask[3]; |
1da177e4 | 2769 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2770 | .bitmask = bitmask, |
1da177e4 LT |
2771 | }; |
2772 | struct nfs4_lookup_res res = { | |
2773 | .server = server, | |
0e574af1 | 2774 | .fattr = info->fattr, |
1da177e4 LT |
2775 | .fh = fhandle, |
2776 | }; | |
2777 | struct rpc_message msg = { | |
2778 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2779 | .rpc_argp = &args, | |
2780 | .rpc_resp = &res, | |
2781 | }; | |
008f55d0 | 2782 | |
aa9c2669 DQ |
2783 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2784 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2785 | /* | |
2786 | * Process the label in the upcoming getfattr | |
2787 | */ | |
2788 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2789 | ||
0e574af1 | 2790 | nfs_fattr_init(info->fattr); |
7c513058 | 2791 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2792 | } |
2793 | ||
2794 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2795 | struct nfs_fsinfo *info) | |
2796 | { | |
2797 | struct nfs4_exception exception = { }; | |
2798 | int err; | |
2799 | do { | |
fb8a5ba8 | 2800 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2801 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2802 | switch (err) { |
2803 | case 0: | |
2804 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2805 | goto out; |
fb8a5ba8 BS |
2806 | default: |
2807 | err = nfs4_handle_exception(server, err, &exception); | |
2808 | } | |
1da177e4 | 2809 | } while (exception.retry); |
05e9cfb4 | 2810 | out: |
1da177e4 LT |
2811 | return err; |
2812 | } | |
2813 | ||
8f70e95f BS |
2814 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2815 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2816 | { | |
c2190661 TM |
2817 | struct rpc_auth_create_args auth_args = { |
2818 | .pseudoflavor = flavor, | |
2819 | }; | |
8f70e95f BS |
2820 | struct rpc_auth *auth; |
2821 | int ret; | |
2822 | ||
c2190661 | 2823 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2824 | if (IS_ERR(auth)) { |
75bc8821 | 2825 | ret = -EACCES; |
8f70e95f BS |
2826 | goto out; |
2827 | } | |
2828 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2829 | out: |
2830 | return ret; | |
2831 | } | |
2832 | ||
9a744ba3 CL |
2833 | /* |
2834 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2835 | * | |
2836 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2837 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2838 | * | |
2839 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2840 | * negative errno value. | |
2841 | */ | |
801a16dc | 2842 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2843 | struct nfs_fsinfo *info) |
1da177e4 | 2844 | { |
9a744ba3 CL |
2845 | /* Per 3530bis 15.33.5 */ |
2846 | static const rpc_authflavor_t flav_array[] = { | |
2847 | RPC_AUTH_GSS_KRB5P, | |
2848 | RPC_AUTH_GSS_KRB5I, | |
2849 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2850 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2851 | RPC_AUTH_NULL, |
2852 | }; | |
2853 | int status = -EPERM; | |
2854 | size_t i; | |
6a1a1e34 | 2855 | |
9a744ba3 | 2856 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2857 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2858 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2859 | continue; |
2860 | break; | |
8f70e95f | 2861 | } |
9a744ba3 | 2862 | |
fb8a5ba8 BS |
2863 | /* |
2864 | * -EACCESS could mean that the user doesn't have correct permissions | |
2865 | * to access the mount. It could also mean that we tried to mount | |
2866 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2867 | * existing mount programs don't handle -EACCES very well so it should | |
2868 | * be mapped to -EPERM instead. | |
2869 | */ | |
2870 | if (status == -EACCES) | |
2871 | status = -EPERM; | |
801a16dc BS |
2872 | return status; |
2873 | } | |
2874 | ||
2ed4b95b CL |
2875 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2876 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2877 | { | |
2878 | int mv = server->nfs_client->cl_minorversion; | |
2879 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2880 | } | |
2881 | ||
2882 | /** | |
2883 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2884 | * @server: initialized nfs_server handle | |
2885 | * @fhandle: we fill in the pseudo-fs root file handle | |
2886 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 2887 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
2888 | * |
2889 | * Returns zero on success, or a negative errno. | |
801a16dc | 2890 | */ |
3028eb2b | 2891 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
2892 | struct nfs_fsinfo *info, |
2893 | bool auth_probe) | |
801a16dc | 2894 | { |
2ed4b95b CL |
2895 | int status; |
2896 | ||
5e6b1990 TM |
2897 | switch (auth_probe) { |
2898 | case false: | |
2899 | status = nfs4_lookup_root(server, fhandle, info); | |
2900 | if (status != -NFS4ERR_WRONGSEC) | |
2901 | break; | |
2902 | /* Did user force a 'sec=' mount option? */ | |
2903 | if (server->flags & NFS_MOUNT_SECFLAVOUR) | |
2904 | break; | |
2905 | default: | |
2ed4b95b | 2906 | status = nfs4_do_find_root_sec(server, fhandle, info); |
5e6b1990 | 2907 | } |
2ed4b95b | 2908 | |
1da177e4 LT |
2909 | if (status == 0) |
2910 | status = nfs4_server_capabilities(server, fhandle); | |
2911 | if (status == 0) | |
2912 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2913 | |
c12e87f4 | 2914 | return nfs4_map_errors(status); |
1da177e4 LT |
2915 | } |
2916 | ||
bae36241 BS |
2917 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2918 | struct nfs_fsinfo *info) | |
2919 | { | |
2920 | int error; | |
2921 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 2922 | struct nfs4_label *label = NULL; |
bae36241 BS |
2923 | |
2924 | error = nfs4_server_capabilities(server, mntfh); | |
2925 | if (error < 0) { | |
2926 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2927 | return error; | |
2928 | } | |
2929 | ||
14c43f76 DQ |
2930 | label = nfs4_label_alloc(server, GFP_KERNEL); |
2931 | if (IS_ERR(label)) | |
2932 | return PTR_ERR(label); | |
2933 | ||
1775fd3e | 2934 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
2935 | if (error < 0) { |
2936 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 2937 | goto err_free_label; |
bae36241 BS |
2938 | } |
2939 | ||
2940 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2941 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2942 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2943 | ||
14c43f76 DQ |
2944 | err_free_label: |
2945 | nfs4_label_free(label); | |
2946 | ||
bae36241 BS |
2947 | return error; |
2948 | } | |
2949 | ||
6b97fd3d MN |
2950 | /* |
2951 | * Get locations and (maybe) other attributes of a referral. | |
2952 | * Note that we'll actually follow the referral later when | |
2953 | * we detect fsid mismatch in inode revalidation | |
2954 | */ | |
f05d147f BS |
2955 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2956 | const struct qstr *name, struct nfs_fattr *fattr, | |
2957 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2958 | { |
2959 | int status = -ENOMEM; | |
2960 | struct page *page = NULL; | |
2961 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2962 | |
2963 | page = alloc_page(GFP_KERNEL); | |
2964 | if (page == NULL) | |
2965 | goto out; | |
2966 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2967 | if (locations == NULL) | |
2968 | goto out; | |
2969 | ||
f05d147f | 2970 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2971 | if (status != 0) |
2972 | goto out; | |
2973 | /* Make sure server returned a different fsid for the referral */ | |
2974 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2975 | dprintk("%s: server did not return a different fsid for" |
2976 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2977 | status = -EIO; |
2978 | goto out; | |
2979 | } | |
533eb461 AA |
2980 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2981 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2982 | |
533eb461 | 2983 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2984 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2985 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2986 | out: | |
2987 | if (page) | |
2988 | __free_page(page); | |
5d7ca35a | 2989 | kfree(locations); |
6b97fd3d MN |
2990 | return status; |
2991 | } | |
2992 | ||
1775fd3e DQ |
2993 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2994 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
2995 | { |
2996 | struct nfs4_getattr_arg args = { | |
2997 | .fh = fhandle, | |
2998 | .bitmask = server->attr_bitmask, | |
2999 | }; | |
3000 | struct nfs4_getattr_res res = { | |
3001 | .fattr = fattr, | |
1775fd3e | 3002 | .label = label, |
1da177e4 LT |
3003 | .server = server, |
3004 | }; | |
3005 | struct rpc_message msg = { | |
3006 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3007 | .rpc_argp = &args, | |
3008 | .rpc_resp = &res, | |
3009 | }; | |
aa9c2669 DQ |
3010 | |
3011 | args.bitmask = nfs4_bitmask(server, label); | |
3012 | ||
0e574af1 | 3013 | nfs_fattr_init(fattr); |
7c513058 | 3014 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3015 | } |
3016 | ||
1775fd3e DQ |
3017 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3018 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3019 | { |
3020 | struct nfs4_exception exception = { }; | |
3021 | int err; | |
3022 | do { | |
b5f875a9 TM |
3023 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3024 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3025 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3026 | &exception); |
3027 | } while (exception.retry); | |
3028 | return err; | |
3029 | } | |
3030 | ||
3031 | /* | |
3032 | * The file is not closed if it is opened due to the a request to change | |
3033 | * the size of the file. The open call will not be needed once the | |
3034 | * VFS layer lookup-intents are implemented. | |
3035 | * | |
3036 | * Close is called when the inode is destroyed. | |
3037 | * If we haven't opened the file for O_WRONLY, we | |
3038 | * need to in the size_change case to obtain a stateid. | |
3039 | * | |
3040 | * Got race? | |
3041 | * Because OPEN is always done by name in nfsv4, it is | |
3042 | * possible that we opened a different file by the same | |
3043 | * name. We can recognize this race condition, but we | |
3044 | * can't do anything about it besides returning an error. | |
3045 | * | |
3046 | * This will be fixed with VFS changes (lookup-intent). | |
3047 | */ | |
3048 | static int | |
3049 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3050 | struct iattr *sattr) | |
3051 | { | |
08e9eac4 | 3052 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3053 | struct rpc_cred *cred = NULL; |
d530838b | 3054 | struct nfs4_state *state = NULL; |
14c43f76 | 3055 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3056 | int status; |
3057 | ||
8a1636c4 | 3058 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 3059 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3060 | |
0e574af1 | 3061 | nfs_fattr_init(fattr); |
1da177e4 | 3062 | |
2669940d AA |
3063 | /* Deal with open(O_TRUNC) */ |
3064 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3065 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3066 | |
3067 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3068 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3069 | return 0; |
3070 | ||
d530838b | 3071 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3072 | if (sattr->ia_valid & ATTR_FILE) { |
3073 | struct nfs_open_context *ctx; | |
3074 | ||
3075 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3076 | if (ctx) { |
3077 | cred = ctx->cred; | |
3078 | state = ctx->state; | |
3079 | } | |
659bfcd6 | 3080 | } |
08e9eac4 | 3081 | |
14c43f76 DQ |
3082 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3083 | if (IS_ERR(label)) | |
3084 | return PTR_ERR(label); | |
3085 | ||
3086 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3087 | if (status == 0) { |
65e4308d | 3088 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3089 | nfs_setsecurity(inode, fattr, label); |
3090 | } | |
14c43f76 | 3091 | nfs4_label_free(label); |
1da177e4 LT |
3092 | return status; |
3093 | } | |
3094 | ||
0c2e53f1 TM |
3095 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3096 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3097 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3098 | { |
0c2e53f1 | 3099 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3100 | int status; |
3101 | struct nfs4_lookup_arg args = { | |
3102 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3103 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3104 | .name = name, |
3105 | }; | |
3106 | struct nfs4_lookup_res res = { | |
3107 | .server = server, | |
3108 | .fattr = fattr, | |
aa9c2669 | 3109 | .label = label, |
2b3de441 DH |
3110 | .fh = fhandle, |
3111 | }; | |
3112 | struct rpc_message msg = { | |
3113 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3114 | .rpc_argp = &args, | |
3115 | .rpc_resp = &res, | |
3116 | }; | |
3117 | ||
aa9c2669 DQ |
3118 | args.bitmask = nfs4_bitmask(server, label); |
3119 | ||
2b3de441 DH |
3120 | nfs_fattr_init(fattr); |
3121 | ||
1da177e4 | 3122 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3123 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3124 | dprintk("NFS reply lookup: %d\n", status); |
3125 | return status; | |
3126 | } | |
3127 | ||
72de53ec | 3128 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3129 | { |
7ebb9315 | 3130 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3131 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3132 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3133 | fattr->nlink = 2; | |
3134 | } | |
3135 | ||
72de53ec BS |
3136 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3137 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3138 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3139 | { |
3140 | struct nfs4_exception exception = { }; | |
72de53ec | 3141 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3142 | int err; |
3143 | do { | |
1775fd3e | 3144 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3145 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3146 | switch (err) { |
08ef7bd3 | 3147 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3148 | err = -ENOENT; |
3149 | goto out; | |
0c2e53f1 | 3150 | case -NFS4ERR_MOVED: |
f05d147f | 3151 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3152 | goto out; |
0c2e53f1 | 3153 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3154 | err = -EPERM; |
3155 | if (client != *clnt) | |
3156 | goto out; | |
41d058c3 TM |
3157 | /* No security negotiation if the user specified 'sec=' */ |
3158 | if (NFS_SERVER(dir)->flags & NFS_MOUNT_SECFLAVOUR) | |
3159 | goto out; | |
72de53ec BS |
3160 | client = nfs4_create_sec_client(client, dir, name); |
3161 | if (IS_ERR(client)) | |
3162 | return PTR_ERR(client); | |
3163 | ||
3164 | exception.retry = 1; | |
3165 | break; | |
3166 | default: | |
3167 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3168 | } |
1da177e4 | 3169 | } while (exception.retry); |
72de53ec BS |
3170 | |
3171 | out: | |
3172 | if (err == 0) | |
3173 | *clnt = client; | |
3174 | else if (client != *clnt) | |
3175 | rpc_shutdown_client(client); | |
3176 | ||
1da177e4 LT |
3177 | return err; |
3178 | } | |
3179 | ||
80a16b21 | 3180 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3181 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3182 | struct nfs4_label *label) | |
72de53ec BS |
3183 | { |
3184 | int status; | |
3185 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3186 | ||
1775fd3e | 3187 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3188 | if (client != NFS_CLIENT(dir)) { |
3189 | rpc_shutdown_client(client); | |
3190 | nfs_fixup_secinfo_attributes(fattr); | |
3191 | } | |
3192 | return status; | |
3193 | } | |
3194 | ||
f05d147f BS |
3195 | struct rpc_clnt * |
3196 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3197 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3198 | { | |
3199 | int status; | |
3200 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
3201 | ||
1775fd3e | 3202 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
f05d147f BS |
3203 | if (status < 0) { |
3204 | rpc_shutdown_client(client); | |
3205 | return ERR_PTR(status); | |
3206 | } | |
3207 | return client; | |
3208 | } | |
3209 | ||
1da177e4 LT |
3210 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3211 | { | |
76b32999 | 3212 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3213 | struct nfs4_accessargs args = { |
3214 | .fh = NFS_FH(inode), | |
a4980e78 | 3215 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3216 | }; |
3217 | struct nfs4_accessres res = { | |
3218 | .server = server, | |
1da177e4 | 3219 | }; |
1da177e4 LT |
3220 | struct rpc_message msg = { |
3221 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3222 | .rpc_argp = &args, | |
3223 | .rpc_resp = &res, | |
3224 | .rpc_cred = entry->cred, | |
3225 | }; | |
3226 | int mode = entry->mask; | |
aa9c2669 | 3227 | int status = 0; |
1da177e4 LT |
3228 | |
3229 | /* | |
3230 | * Determine which access bits we want to ask for... | |
3231 | */ | |
3232 | if (mode & MAY_READ) | |
3233 | args.access |= NFS4_ACCESS_READ; | |
3234 | if (S_ISDIR(inode->i_mode)) { | |
3235 | if (mode & MAY_WRITE) | |
3236 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3237 | if (mode & MAY_EXEC) | |
3238 | args.access |= NFS4_ACCESS_LOOKUP; | |
3239 | } else { | |
3240 | if (mode & MAY_WRITE) | |
3241 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3242 | if (mode & MAY_EXEC) | |
3243 | args.access |= NFS4_ACCESS_EXECUTE; | |
3244 | } | |
c407d41a TM |
3245 | |
3246 | res.fattr = nfs_alloc_fattr(); | |
3247 | if (res.fattr == NULL) | |
3248 | return -ENOMEM; | |
3249 | ||
7c513058 | 3250 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3251 | if (!status) { |
6168f62c | 3252 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3253 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3254 | } |
c407d41a | 3255 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3256 | return status; |
3257 | } | |
3258 | ||
3259 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3260 | { | |
3261 | struct nfs4_exception exception = { }; | |
3262 | int err; | |
3263 | do { | |
c1578b76 TM |
3264 | err = _nfs4_proc_access(inode, entry); |
3265 | trace_nfs4_access(inode, err); | |
3266 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3267 | &exception); |
3268 | } while (exception.retry); | |
3269 | return err; | |
3270 | } | |
3271 | ||
3272 | /* | |
3273 | * TODO: For the time being, we don't try to get any attributes | |
3274 | * along with any of the zero-copy operations READ, READDIR, | |
3275 | * READLINK, WRITE. | |
3276 | * | |
3277 | * In the case of the first three, we want to put the GETATTR | |
3278 | * after the read-type operation -- this is because it is hard | |
3279 | * to predict the length of a GETATTR response in v4, and thus | |
3280 | * align the READ data correctly. This means that the GETATTR | |
3281 | * may end up partially falling into the page cache, and we should | |
3282 | * shift it into the 'tail' of the xdr_buf before processing. | |
3283 | * To do this efficiently, we need to know the total length | |
3284 | * of data received, which doesn't seem to be available outside | |
3285 | * of the RPC layer. | |
3286 | * | |
3287 | * In the case of WRITE, we also want to put the GETATTR after | |
3288 | * the operation -- in this case because we want to make sure | |
140150db | 3289 | * we get the post-operation mtime and size. |
1da177e4 LT |
3290 | * |
3291 | * Both of these changes to the XDR layer would in fact be quite | |
3292 | * minor, but I decided to leave them for a subsequent patch. | |
3293 | */ | |
3294 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3295 | unsigned int pgbase, unsigned int pglen) | |
3296 | { | |
3297 | struct nfs4_readlink args = { | |
3298 | .fh = NFS_FH(inode), | |
3299 | .pgbase = pgbase, | |
3300 | .pglen = pglen, | |
3301 | .pages = &page, | |
3302 | }; | |
f50c7000 | 3303 | struct nfs4_readlink_res res; |
1da177e4 LT |
3304 | struct rpc_message msg = { |
3305 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3306 | .rpc_argp = &args, | |
f50c7000 | 3307 | .rpc_resp = &res, |
1da177e4 LT |
3308 | }; |
3309 | ||
7c513058 | 3310 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3311 | } |
3312 | ||
3313 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3314 | unsigned int pgbase, unsigned int pglen) | |
3315 | { | |
3316 | struct nfs4_exception exception = { }; | |
3317 | int err; | |
3318 | do { | |
c1578b76 TM |
3319 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3320 | trace_nfs4_readlink(inode, err); | |
3321 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3322 | &exception); |
3323 | } while (exception.retry); | |
3324 | return err; | |
3325 | } | |
3326 | ||
1da177e4 | 3327 | /* |
8867fe58 | 3328 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3329 | */ |
1da177e4 LT |
3330 | static int |
3331 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3332 | int flags) |
1da177e4 | 3333 | { |
aa9c2669 | 3334 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3335 | struct nfs_open_context *ctx; |
1da177e4 | 3336 | struct nfs4_state *state; |
1da177e4 LT |
3337 | int status = 0; |
3338 | ||
8867fe58 MS |
3339 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3340 | if (IS_ERR(ctx)) | |
3341 | return PTR_ERR(ctx); | |
3342 | ||
aa9c2669 DQ |
3343 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3344 | ||
a8a5da99 | 3345 | sattr->ia_mode &= ~current_umask(); |
959d921f | 3346 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel); |
1da177e4 LT |
3347 | if (IS_ERR(state)) { |
3348 | status = PTR_ERR(state); | |
c0204fd2 | 3349 | goto out; |
1da177e4 | 3350 | } |
1da177e4 | 3351 | out: |
aa9c2669 | 3352 | nfs4_label_release_security(ilabel); |
8867fe58 | 3353 | put_nfs_open_context(ctx); |
1da177e4 LT |
3354 | return status; |
3355 | } | |
3356 | ||
3357 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3358 | { | |
16e42959 | 3359 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3360 | struct nfs_removeargs args = { |
1da177e4 | 3361 | .fh = NFS_FH(dir), |
26fe5750 | 3362 | .name = *name, |
16e42959 | 3363 | }; |
4fdc17b2 | 3364 | struct nfs_removeres res = { |
16e42959 | 3365 | .server = server, |
1da177e4 | 3366 | }; |
1da177e4 | 3367 | struct rpc_message msg = { |
4fdc17b2 TM |
3368 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3369 | .rpc_argp = &args, | |
3370 | .rpc_resp = &res, | |
1da177e4 | 3371 | }; |
778d2817 | 3372 | int status; |
1da177e4 | 3373 | |
7c513058 | 3374 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3375 | if (status == 0) |
16e42959 | 3376 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3377 | return status; |
3378 | } | |
3379 | ||
3380 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3381 | { | |
3382 | struct nfs4_exception exception = { }; | |
3383 | int err; | |
3384 | do { | |
078ea3df TM |
3385 | err = _nfs4_proc_remove(dir, name); |
3386 | trace_nfs4_remove(dir, name, err); | |
3387 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3388 | &exception); |
3389 | } while (exception.retry); | |
3390 | return err; | |
3391 | } | |
3392 | ||
e4eff1a6 | 3393 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3394 | { |
e4eff1a6 TM |
3395 | struct nfs_server *server = NFS_SERVER(dir); |
3396 | struct nfs_removeargs *args = msg->rpc_argp; | |
3397 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3398 | |
e4eff1a6 | 3399 | res->server = server; |
1da177e4 | 3400 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3401 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3402 | |
3403 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3404 | } |
3405 | ||
34e137cc BS |
3406 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3407 | { | |
d9afbd1b TM |
3408 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3409 | &data->args.seq_args, | |
3410 | &data->res.seq_res, | |
3411 | task); | |
1da177e4 LT |
3412 | } |
3413 | ||
e4eff1a6 | 3414 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3415 | { |
078ea3df TM |
3416 | struct nfs_unlinkdata *data = task->tk_calldata; |
3417 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3418 | |
14516c3a TM |
3419 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3420 | return 0; | |
9e33bed5 | 3421 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3422 | return 0; |
3423 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3424 | return 1; |
1da177e4 LT |
3425 | } |
3426 | ||
d3d4152a JL |
3427 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3428 | { | |
3429 | struct nfs_server *server = NFS_SERVER(dir); | |
3430 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3431 | struct nfs_renameres *res = msg->rpc_resp; | |
3432 | ||
3433 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3434 | res->server = server; |
a9c92d6b | 3435 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3436 | } |
3437 | ||
c6bfa1a1 BS |
3438 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3439 | { | |
d9afbd1b TM |
3440 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3441 | &data->args.seq_args, | |
3442 | &data->res.seq_res, | |
3443 | task); | |
d3d4152a JL |
3444 | } |
3445 | ||
3446 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3447 | struct inode *new_dir) | |
3448 | { | |
fbc6f7c2 TM |
3449 | struct nfs_renamedata *data = task->tk_calldata; |
3450 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3451 | |
3452 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3453 | return 0; | |
3454 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3455 | return 0; | |
3456 | ||
3457 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3458 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3459 | return 1; |
3460 | } | |
3461 | ||
1da177e4 LT |
3462 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3463 | struct inode *new_dir, struct qstr *new_name) | |
3464 | { | |
6caf2c82 | 3465 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3466 | struct nfs_renameargs arg = { |
1da177e4 LT |
3467 | .old_dir = NFS_FH(old_dir), |
3468 | .new_dir = NFS_FH(new_dir), | |
3469 | .old_name = old_name, | |
3470 | .new_name = new_name, | |
6caf2c82 | 3471 | }; |
e8582a8b | 3472 | struct nfs_renameres res = { |
6caf2c82 | 3473 | .server = server, |
1da177e4 | 3474 | }; |
1da177e4 LT |
3475 | struct rpc_message msg = { |
3476 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3477 | .rpc_argp = &arg, | |
3478 | .rpc_resp = &res, | |
3479 | }; | |
011fff72 | 3480 | int status = -ENOMEM; |
14c43f76 | 3481 | |
7c513058 | 3482 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3483 | if (!status) { |
3484 | update_changeattr(old_dir, &res.old_cinfo); | |
3485 | update_changeattr(new_dir, &res.new_cinfo); | |
3486 | } | |
3487 | return status; | |
3488 | } | |
3489 | ||
3490 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3491 | struct inode *new_dir, struct qstr *new_name) | |
3492 | { | |
3493 | struct nfs4_exception exception = { }; | |
3494 | int err; | |
3495 | do { | |
fbc6f7c2 TM |
3496 | err = _nfs4_proc_rename(old_dir, old_name, |
3497 | new_dir, new_name); | |
3498 | trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err); | |
3499 | err = nfs4_handle_exception(NFS_SERVER(old_dir), err, | |
1da177e4 LT |
3500 | &exception); |
3501 | } while (exception.retry); | |
3502 | return err; | |
3503 | } | |
3504 | ||
3505 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3506 | { | |
91ba2eee | 3507 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3508 | struct nfs4_link_arg arg = { |
3509 | .fh = NFS_FH(inode), | |
3510 | .dir_fh = NFS_FH(dir), | |
3511 | .name = name, | |
91ba2eee TM |
3512 | .bitmask = server->attr_bitmask, |
3513 | }; | |
91ba2eee TM |
3514 | struct nfs4_link_res res = { |
3515 | .server = server, | |
1775fd3e | 3516 | .label = NULL, |
1da177e4 | 3517 | }; |
1da177e4 LT |
3518 | struct rpc_message msg = { |
3519 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3520 | .rpc_argp = &arg, | |
91ba2eee | 3521 | .rpc_resp = &res, |
1da177e4 | 3522 | }; |
136f2627 TM |
3523 | int status = -ENOMEM; |
3524 | ||
3525 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3526 | if (res.fattr == NULL) |
136f2627 | 3527 | goto out; |
1da177e4 | 3528 | |
14c43f76 DQ |
3529 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3530 | if (IS_ERR(res.label)) { | |
3531 | status = PTR_ERR(res.label); | |
3532 | goto out; | |
3533 | } | |
aa9c2669 | 3534 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3535 | |
7c513058 | 3536 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3537 | if (!status) { |
3538 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3539 | status = nfs_post_op_update_inode(inode, res.fattr); |
3540 | if (!status) | |
3541 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3542 | } |
14c43f76 DQ |
3543 | |
3544 | ||
3545 | nfs4_label_free(res.label); | |
3546 | ||
136f2627 | 3547 | out: |
136f2627 | 3548 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3549 | return status; |
3550 | } | |
3551 | ||
3552 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3553 | { | |
3554 | struct nfs4_exception exception = { }; | |
3555 | int err; | |
3556 | do { | |
3557 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3558 | _nfs4_proc_link(inode, dir, name), | |
3559 | &exception); | |
3560 | } while (exception.retry); | |
3561 | return err; | |
3562 | } | |
3563 | ||
57dc9a57 TM |
3564 | struct nfs4_createdata { |
3565 | struct rpc_message msg; | |
3566 | struct nfs4_create_arg arg; | |
3567 | struct nfs4_create_res res; | |
3568 | struct nfs_fh fh; | |
3569 | struct nfs_fattr fattr; | |
1775fd3e | 3570 | struct nfs4_label *label; |
57dc9a57 TM |
3571 | }; |
3572 | ||
3573 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3574 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3575 | { | |
3576 | struct nfs4_createdata *data; | |
3577 | ||
3578 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3579 | if (data != NULL) { | |
3580 | struct nfs_server *server = NFS_SERVER(dir); | |
3581 | ||
14c43f76 DQ |
3582 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3583 | if (IS_ERR(data->label)) | |
3584 | goto out_free; | |
3585 | ||
57dc9a57 TM |
3586 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3587 | data->msg.rpc_argp = &data->arg; | |
3588 | data->msg.rpc_resp = &data->res; | |
3589 | data->arg.dir_fh = NFS_FH(dir); | |
3590 | data->arg.server = server; | |
3591 | data->arg.name = name; | |
3592 | data->arg.attrs = sattr; | |
3593 | data->arg.ftype = ftype; | |
aa9c2669 | 3594 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3595 | data->res.server = server; |
3596 | data->res.fh = &data->fh; | |
3597 | data->res.fattr = &data->fattr; | |
1775fd3e | 3598 | data->res.label = data->label; |
57dc9a57 | 3599 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3600 | } |
3601 | return data; | |
14c43f76 DQ |
3602 | out_free: |
3603 | kfree(data); | |
3604 | return NULL; | |
57dc9a57 TM |
3605 | } |
3606 | ||
3607 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3608 | { | |
7c513058 | 3609 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3610 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3611 | if (status == 0) { |
3612 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3613 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3614 | } |
3615 | return status; | |
3616 | } | |
3617 | ||
3618 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3619 | { | |
14c43f76 | 3620 | nfs4_label_free(data->label); |
57dc9a57 TM |
3621 | kfree(data); |
3622 | } | |
3623 | ||
4f390c15 | 3624 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3625 | struct page *page, unsigned int len, struct iattr *sattr, |
3626 | struct nfs4_label *label) | |
1da177e4 | 3627 | { |
57dc9a57 TM |
3628 | struct nfs4_createdata *data; |
3629 | int status = -ENAMETOOLONG; | |
1da177e4 | 3630 | |
94a6d753 | 3631 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3632 | goto out; |
4f390c15 | 3633 | |
57dc9a57 TM |
3634 | status = -ENOMEM; |
3635 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3636 | if (data == NULL) | |
3637 | goto out; | |
3638 | ||
3639 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3640 | data->arg.u.symlink.pages = &page; | |
3641 | data->arg.u.symlink.len = len; | |
1775fd3e | 3642 | data->arg.label = label; |
1da177e4 | 3643 | |
57dc9a57 TM |
3644 | status = nfs4_do_create(dir, dentry, data); |
3645 | ||
3646 | nfs4_free_createdata(data); | |
3647 | out: | |
1da177e4 LT |
3648 | return status; |
3649 | } | |
3650 | ||
4f390c15 | 3651 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3652 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3653 | { |
3654 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3655 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3656 | int err; |
aa9c2669 DQ |
3657 | |
3658 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3659 | ||
1da177e4 | 3660 | do { |
078ea3df TM |
3661 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3662 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3663 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3664 | &exception); |
3665 | } while (exception.retry); | |
aa9c2669 DQ |
3666 | |
3667 | nfs4_label_release_security(label); | |
1da177e4 LT |
3668 | return err; |
3669 | } | |
3670 | ||
3671 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3672 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3673 | { |
57dc9a57 TM |
3674 | struct nfs4_createdata *data; |
3675 | int status = -ENOMEM; | |
1da177e4 | 3676 | |
57dc9a57 TM |
3677 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3678 | if (data == NULL) | |
3679 | goto out; | |
3680 | ||
1775fd3e | 3681 | data->arg.label = label; |
57dc9a57 TM |
3682 | status = nfs4_do_create(dir, dentry, data); |
3683 | ||
3684 | nfs4_free_createdata(data); | |
3685 | out: | |
1da177e4 LT |
3686 | return status; |
3687 | } | |
3688 | ||
3689 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3690 | struct iattr *sattr) | |
3691 | { | |
3692 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3693 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3694 | int err; |
a8a5da99 | 3695 | |
aa9c2669 DQ |
3696 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3697 | ||
a8a5da99 | 3698 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3699 | do { |
078ea3df TM |
3700 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3701 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3702 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3703 | &exception); |
3704 | } while (exception.retry); | |
aa9c2669 DQ |
3705 | nfs4_label_release_security(label); |
3706 | ||
1da177e4 LT |
3707 | return err; |
3708 | } | |
3709 | ||
3710 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3711 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3712 | { |
3713 | struct inode *dir = dentry->d_inode; | |
3714 | struct nfs4_readdir_arg args = { | |
3715 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3716 | .pages = pages, |
1da177e4 LT |
3717 | .pgbase = 0, |
3718 | .count = count, | |
96d25e53 | 3719 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3720 | .plus = plus, |
1da177e4 LT |
3721 | }; |
3722 | struct nfs4_readdir_res res; | |
3723 | struct rpc_message msg = { | |
3724 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3725 | .rpc_argp = &args, | |
3726 | .rpc_resp = &res, | |
3727 | .rpc_cred = cred, | |
3728 | }; | |
3729 | int status; | |
3730 | ||
3110ff80 | 3731 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3732 | dentry->d_parent->d_name.name, |
3733 | dentry->d_name.name, | |
3734 | (unsigned long long)cookie); | |
c3f52af3 | 3735 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3736 | res.pgbase = args.pgbase; |
7c513058 | 3737 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3738 | if (status >= 0) { |
c3f52af3 | 3739 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3740 | status += args.pgbase; |
3741 | } | |
c4812998 TM |
3742 | |
3743 | nfs_invalidate_atime(dir); | |
3744 | ||
3110ff80 | 3745 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3746 | return status; |
3747 | } | |
3748 | ||
3749 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3750 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3751 | { |
3752 | struct nfs4_exception exception = { }; | |
3753 | int err; | |
3754 | do { | |
c1578b76 TM |
3755 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3756 | pages, count, plus); | |
3757 | trace_nfs4_readdir(dentry->d_inode, err); | |
3758 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3759 | &exception); |
3760 | } while (exception.retry); | |
3761 | return err; | |
3762 | } | |
3763 | ||
3764 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3765 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3766 | { |
57dc9a57 TM |
3767 | struct nfs4_createdata *data; |
3768 | int mode = sattr->ia_mode; | |
3769 | int status = -ENOMEM; | |
1da177e4 | 3770 | |
57dc9a57 TM |
3771 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3772 | if (data == NULL) | |
3773 | goto out; | |
3774 | ||
1da177e4 | 3775 | if (S_ISFIFO(mode)) |
57dc9a57 | 3776 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3777 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3778 | data->arg.ftype = NF4BLK; |
3779 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3780 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3781 | } |
3782 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3783 | data->arg.ftype = NF4CHR; |
3784 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3785 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3786 | } else if (!S_ISSOCK(mode)) { |
3787 | status = -EINVAL; | |
3788 | goto out_free; | |
1da177e4 | 3789 | } |
1775fd3e | 3790 | |
aa9c2669 | 3791 | data->arg.label = label; |
57dc9a57 | 3792 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3793 | out_free: |
57dc9a57 TM |
3794 | nfs4_free_createdata(data); |
3795 | out: | |
1da177e4 LT |
3796 | return status; |
3797 | } | |
3798 | ||
3799 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3800 | struct iattr *sattr, dev_t rdev) | |
3801 | { | |
3802 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3803 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3804 | int err; |
a8a5da99 | 3805 | |
aa9c2669 DQ |
3806 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3807 | ||
a8a5da99 | 3808 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3809 | do { |
078ea3df TM |
3810 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3811 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3812 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3813 | &exception); |
3814 | } while (exception.retry); | |
aa9c2669 DQ |
3815 | |
3816 | nfs4_label_release_security(label); | |
3817 | ||
1da177e4 LT |
3818 | return err; |
3819 | } | |
3820 | ||
3821 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3822 | struct nfs_fsstat *fsstat) | |
3823 | { | |
3824 | struct nfs4_statfs_arg args = { | |
3825 | .fh = fhandle, | |
3826 | .bitmask = server->attr_bitmask, | |
3827 | }; | |
24ad148a BH |
3828 | struct nfs4_statfs_res res = { |
3829 | .fsstat = fsstat, | |
3830 | }; | |
1da177e4 LT |
3831 | struct rpc_message msg = { |
3832 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3833 | .rpc_argp = &args, | |
24ad148a | 3834 | .rpc_resp = &res, |
1da177e4 LT |
3835 | }; |
3836 | ||
0e574af1 | 3837 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3838 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3839 | } |
3840 | ||
3841 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3842 | { | |
3843 | struct nfs4_exception exception = { }; | |
3844 | int err; | |
3845 | do { | |
3846 | err = nfs4_handle_exception(server, | |
3847 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3848 | &exception); | |
3849 | } while (exception.retry); | |
3850 | return err; | |
3851 | } | |
3852 | ||
3853 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3854 | struct nfs_fsinfo *fsinfo) | |
3855 | { | |
3856 | struct nfs4_fsinfo_arg args = { | |
3857 | .fh = fhandle, | |
3858 | .bitmask = server->attr_bitmask, | |
3859 | }; | |
3dda5e43 BH |
3860 | struct nfs4_fsinfo_res res = { |
3861 | .fsinfo = fsinfo, | |
3862 | }; | |
1da177e4 LT |
3863 | struct rpc_message msg = { |
3864 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3865 | .rpc_argp = &args, | |
3dda5e43 | 3866 | .rpc_resp = &res, |
1da177e4 LT |
3867 | }; |
3868 | ||
7c513058 | 3869 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3870 | } |
3871 | ||
3872 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3873 | { | |
3874 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3875 | unsigned long now = jiffies; |
1da177e4 LT |
3876 | int err; |
3877 | ||
3878 | do { | |
83ca7f5a | 3879 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 3880 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
3881 | if (err == 0) { |
3882 | struct nfs_client *clp = server->nfs_client; | |
3883 | ||
3884 | spin_lock(&clp->cl_lock); | |
3885 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3886 | clp->cl_last_renewal = now; | |
3887 | spin_unlock(&clp->cl_lock); | |
3888 | break; | |
3889 | } | |
3890 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3891 | } while (exception.retry); |
3892 | return err; | |
3893 | } | |
3894 | ||
3895 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3896 | { | |
e38eb650 BS |
3897 | int error; |
3898 | ||
0e574af1 | 3899 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3900 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3901 | if (error == 0) { |
3902 | /* block layout checks this! */ | |
3903 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3904 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3905 | } |
e38eb650 BS |
3906 | |
3907 | return error; | |
1da177e4 LT |
3908 | } |
3909 | ||
3910 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3911 | struct nfs_pathconf *pathconf) | |
3912 | { | |
3913 | struct nfs4_pathconf_arg args = { | |
3914 | .fh = fhandle, | |
3915 | .bitmask = server->attr_bitmask, | |
3916 | }; | |
d45b2989 BH |
3917 | struct nfs4_pathconf_res res = { |
3918 | .pathconf = pathconf, | |
3919 | }; | |
1da177e4 LT |
3920 | struct rpc_message msg = { |
3921 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3922 | .rpc_argp = &args, | |
d45b2989 | 3923 | .rpc_resp = &res, |
1da177e4 LT |
3924 | }; |
3925 | ||
3926 | /* None of the pathconf attributes are mandatory to implement */ | |
3927 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3928 | memset(pathconf, 0, sizeof(*pathconf)); | |
3929 | return 0; | |
3930 | } | |
3931 | ||
0e574af1 | 3932 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3933 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3934 | } |
3935 | ||
3936 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3937 | struct nfs_pathconf *pathconf) | |
3938 | { | |
3939 | struct nfs4_exception exception = { }; | |
3940 | int err; | |
3941 | ||
3942 | do { | |
3943 | err = nfs4_handle_exception(server, | |
3944 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3945 | &exception); | |
3946 | } while (exception.retry); | |
3947 | return err; | |
3948 | } | |
3949 | ||
5521abfd | 3950 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3951 | const struct nfs_open_context *ctx, |
3952 | const struct nfs_lock_context *l_ctx, | |
3953 | fmode_t fmode) | |
3954 | { | |
3955 | const struct nfs_lockowner *lockowner = NULL; | |
3956 | ||
3957 | if (l_ctx != NULL) | |
3958 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3959 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3960 | } |
3961 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3962 | ||
5521abfd TM |
3963 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3964 | const struct nfs_open_context *ctx, | |
3965 | const struct nfs_lock_context *l_ctx, | |
3966 | fmode_t fmode) | |
3967 | { | |
3968 | nfs4_stateid current_stateid; | |
3969 | ||
3970 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3971 | return false; | |
3972 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3973 | } | |
3974 | ||
3975 | static bool nfs4_error_stateid_expired(int err) | |
3976 | { | |
3977 | switch (err) { | |
3978 | case -NFS4ERR_DELEG_REVOKED: | |
3979 | case -NFS4ERR_ADMIN_REVOKED: | |
3980 | case -NFS4ERR_BAD_STATEID: | |
3981 | case -NFS4ERR_STALE_STATEID: | |
3982 | case -NFS4ERR_OLD_STATEID: | |
3983 | case -NFS4ERR_OPENMODE: | |
3984 | case -NFS4ERR_EXPIRED: | |
3985 | return true; | |
3986 | } | |
3987 | return false; | |
3988 | } | |
3989 | ||
d20581aa BH |
3990 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3991 | { | |
cd841605 | 3992 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3993 | } |
3994 | ||
cbdabc7f | 3995 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3996 | { |
cd841605 | 3997 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3998 | |
cc668ab3 | 3999 | trace_nfs4_read(data, task->tk_status); |
9e33bed5 | 4000 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4001 | rpc_restart_call_prepare(task); |
ec06c096 | 4002 | return -EAGAIN; |
1da177e4 | 4003 | } |
8850df99 | 4004 | |
d20581aa | 4005 | __nfs4_read_done_cb(data); |
1da177e4 | 4006 | if (task->tk_status > 0) |
ec06c096 TM |
4007 | renew_lease(server, data->timestamp); |
4008 | return 0; | |
1da177e4 LT |
4009 | } |
4010 | ||
5521abfd TM |
4011 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
4012 | struct nfs_readargs *args) | |
4013 | { | |
4014 | ||
4015 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4016 | nfs4_stateid_is_current(&args->stateid, | |
4017 | args->context, | |
4018 | args->lock_context, | |
4019 | FMODE_READ)) | |
4020 | return false; | |
4021 | rpc_restart_call_prepare(task); | |
4022 | return true; | |
4023 | } | |
4024 | ||
cbdabc7f AA |
4025 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
4026 | { | |
4027 | ||
4028 | dprintk("--> %s\n", __func__); | |
4029 | ||
4030 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4031 | return -EAGAIN; | |
5521abfd TM |
4032 | if (nfs4_read_stateid_changed(task, &data->args)) |
4033 | return -EAGAIN; | |
d20581aa BH |
4034 | return data->read_done_cb ? data->read_done_cb(task, data) : |
4035 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
4036 | } |
4037 | ||
bdc7f021 | 4038 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 4039 | { |
1da177e4 | 4040 | data->timestamp = jiffies; |
cbdabc7f | 4041 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 4042 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
a9c92d6b | 4043 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
4044 | } |
4045 | ||
ef1820f9 | 4046 | static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
ea7c3303 | 4047 | { |
9b206149 | 4048 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4049 | &data->args.seq_args, |
4050 | &data->res.seq_res, | |
9b206149 | 4051 | task)) |
ef1820f9 N |
4052 | return 0; |
4053 | if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4054 | data->args.lock_context, FMODE_READ) == -EIO) | |
4055 | return -EIO; | |
4056 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) | |
4057 | return -EIO; | |
4058 | return 0; | |
1da177e4 LT |
4059 | } |
4060 | ||
b029bc9b | 4061 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 4062 | { |
cd841605 | 4063 | struct inode *inode = data->header->inode; |
1da177e4 | 4064 | |
cc668ab3 | 4065 | trace_nfs4_write(data, task->tk_status); |
9e33bed5 | 4066 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4067 | rpc_restart_call_prepare(task); |
788e7a89 | 4068 | return -EAGAIN; |
1da177e4 | 4069 | } |
4f9838c7 | 4070 | if (task->tk_status >= 0) { |
1da177e4 | 4071 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 4072 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 4073 | } |
788e7a89 | 4074 | return 0; |
1da177e4 LT |
4075 | } |
4076 | ||
5521abfd TM |
4077 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
4078 | struct nfs_writeargs *args) | |
4079 | { | |
4080 | ||
4081 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4082 | nfs4_stateid_is_current(&args->stateid, | |
4083 | args->context, | |
4084 | args->lock_context, | |
4085 | FMODE_WRITE)) | |
4086 | return false; | |
4087 | rpc_restart_call_prepare(task); | |
4088 | return true; | |
4089 | } | |
4090 | ||
b029bc9b FI |
4091 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
4092 | { | |
4093 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4094 | return -EAGAIN; | |
5521abfd TM |
4095 | if (nfs4_write_stateid_changed(task, &data->args)) |
4096 | return -EAGAIN; | |
d20581aa BH |
4097 | return data->write_done_cb ? data->write_done_cb(task, data) : |
4098 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
4099 | } |
4100 | ||
5a37f851 TM |
4101 | static |
4102 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 4103 | { |
5a37f851 TM |
4104 | const struct nfs_pgio_header *hdr = data->header; |
4105 | ||
4106 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
4107 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
4108 | return false; | |
4109 | /* Otherwise, request attributes if and only if we don't hold | |
4110 | * a delegation | |
4111 | */ | |
011e2a7f | 4112 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4113 | } |
a69aef14 | 4114 | |
bdc7f021 | 4115 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 4116 | { |
cd841605 | 4117 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 4118 | |
5a37f851 | 4119 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
4120 | data->args.bitmask = NULL; |
4121 | data->res.fattr = NULL; | |
4122 | } else | |
4123 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 4124 | |
b029bc9b FI |
4125 | if (!data->write_done_cb) |
4126 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 4127 | data->res.server = server; |
1da177e4 LT |
4128 | data->timestamp = jiffies; |
4129 | ||
bdc7f021 | 4130 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
a9c92d6b | 4131 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4132 | } |
4133 | ||
ef1820f9 | 4134 | static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
c6cb80d0 | 4135 | { |
9b206149 | 4136 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4137 | &data->args.seq_args, |
4138 | &data->res.seq_res, | |
9b206149 | 4139 | task)) |
ef1820f9 N |
4140 | return 0; |
4141 | if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4142 | data->args.lock_context, FMODE_WRITE) == -EIO) | |
4143 | return -EIO; | |
4144 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) | |
4145 | return -EIO; | |
4146 | return 0; | |
1da177e4 LT |
4147 | } |
4148 | ||
0b7c0153 | 4149 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4150 | { |
d9afbd1b TM |
4151 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4152 | &data->args.seq_args, | |
4153 | &data->res.seq_res, | |
4154 | task); | |
1da177e4 LT |
4155 | } |
4156 | ||
0b7c0153 | 4157 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4158 | { |
1da177e4 | 4159 | struct inode *inode = data->inode; |
14516c3a | 4160 | |
cc668ab3 | 4161 | trace_nfs4_commit(data, task->tk_status); |
9e33bed5 | 4162 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4163 | rpc_restart_call_prepare(task); |
788e7a89 | 4164 | return -EAGAIN; |
1da177e4 | 4165 | } |
788e7a89 | 4166 | return 0; |
1da177e4 LT |
4167 | } |
4168 | ||
0b7c0153 | 4169 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4170 | { |
4171 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4172 | return -EAGAIN; | |
0b7c0153 | 4173 | return data->commit_done_cb(task, data); |
5f452431 FI |
4174 | } |
4175 | ||
0b7c0153 | 4176 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4177 | { |
788e7a89 | 4178 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4179 | |
0b7c0153 FI |
4180 | if (data->commit_done_cb == NULL) |
4181 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4182 | data->res.server = server; |
bdc7f021 | 4183 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4184 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4185 | } |
4186 | ||
9bc4e3ca CL |
4187 | struct nfs4_renewdata { |
4188 | struct nfs_client *client; | |
4189 | unsigned long timestamp; | |
4190 | }; | |
4191 | ||
1da177e4 LT |
4192 | /* |
4193 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4194 | * standalone procedure for queueing an asynchronous RENEW. | |
4195 | */ | |
9bc4e3ca | 4196 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4197 | { |
9bc4e3ca CL |
4198 | struct nfs4_renewdata *data = calldata; |
4199 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4200 | |
0851de06 AB |
4201 | if (atomic_read(&clp->cl_count) > 1) |
4202 | nfs4_schedule_state_renewal(clp); | |
4203 | nfs_put_client(clp); | |
9bc4e3ca | 4204 | kfree(data); |
dc96aef9 AB |
4205 | } |
4206 | ||
9bc4e3ca | 4207 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4208 | { |
9bc4e3ca CL |
4209 | struct nfs4_renewdata *data = calldata; |
4210 | struct nfs_client *clp = data->client; | |
4211 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4212 | |
c6d01c6f | 4213 | trace_nfs4_renew_async(clp, task->tk_status); |
1da177e4 | 4214 | if (task->tk_status < 0) { |
95baa25c | 4215 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4216 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4217 | return; | |
4218 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4219 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4220 | return; |
4221 | } | |
4222 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4223 | } |
452e9352 | 4224 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4225 | } |
4226 | ||
963d8fe5 TM |
4227 | static const struct rpc_call_ops nfs4_renew_ops = { |
4228 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4229 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4230 | }; |
4231 | ||
2f60ea6b | 4232 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4233 | { |
4234 | struct rpc_message msg = { | |
4235 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4236 | .rpc_argp = clp, | |
b4454fe1 | 4237 | .rpc_cred = cred, |
1da177e4 | 4238 | }; |
9bc4e3ca | 4239 | struct nfs4_renewdata *data; |
1da177e4 | 4240 | |
2f60ea6b TM |
4241 | if (renew_flags == 0) |
4242 | return 0; | |
0851de06 AB |
4243 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4244 | return -EIO; | |
b569ad34 | 4245 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4246 | if (data == NULL) |
4247 | return -ENOMEM; | |
4248 | data->client = clp; | |
4249 | data->timestamp = jiffies; | |
bc7a05ca | 4250 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4251 | &nfs4_renew_ops, data); |
1da177e4 LT |
4252 | } |
4253 | ||
8534d4ec | 4254 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4255 | { |
4256 | struct rpc_message msg = { | |
4257 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4258 | .rpc_argp = clp, | |
b4454fe1 | 4259 | .rpc_cred = cred, |
1da177e4 LT |
4260 | }; |
4261 | unsigned long now = jiffies; | |
4262 | int status; | |
4263 | ||
bc7a05ca | 4264 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4265 | if (status < 0) |
4266 | return status; | |
452e9352 | 4267 | do_renew_lease(clp, now); |
1da177e4 LT |
4268 | return 0; |
4269 | } | |
4270 | ||
aa1870af BF |
4271 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4272 | { | |
4273 | return (server->caps & NFS_CAP_ACLS) | |
4274 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
4275 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
4276 | } | |
4277 | ||
21f498c2 TM |
4278 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4279 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4280 | * the stack. |
4281 | */ | |
21f498c2 | 4282 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4283 | |
e9e3d724 NH |
4284 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4285 | struct page **pages, unsigned int *pgbase) | |
4286 | { | |
4287 | struct page *newpage, **spages; | |
4288 | int rc = 0; | |
4289 | size_t len; | |
4290 | spages = pages; | |
4291 | ||
4292 | do { | |
21f498c2 | 4293 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4294 | newpage = alloc_page(GFP_KERNEL); |
4295 | ||
4296 | if (newpage == NULL) | |
4297 | goto unwind; | |
4298 | memcpy(page_address(newpage), buf, len); | |
4299 | buf += len; | |
4300 | buflen -= len; | |
4301 | *pages++ = newpage; | |
4302 | rc++; | |
4303 | } while (buflen != 0); | |
4304 | ||
4305 | return rc; | |
4306 | ||
4307 | unwind: | |
4308 | for(; rc > 0; rc--) | |
4309 | __free_page(spages[rc-1]); | |
4310 | return -ENOMEM; | |
4311 | } | |
4312 | ||
e50a1c2e BF |
4313 | struct nfs4_cached_acl { |
4314 | int cached; | |
4315 | size_t len; | |
3e9d4154 | 4316 | char data[0]; |
e50a1c2e BF |
4317 | }; |
4318 | ||
4319 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4320 | { | |
4321 | struct nfs_inode *nfsi = NFS_I(inode); | |
4322 | ||
4323 | spin_lock(&inode->i_lock); | |
4324 | kfree(nfsi->nfs4_acl); | |
4325 | nfsi->nfs4_acl = acl; | |
4326 | spin_unlock(&inode->i_lock); | |
4327 | } | |
4328 | ||
4329 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4330 | { | |
4331 | nfs4_set_cached_acl(inode, NULL); | |
4332 | } | |
4333 | ||
4334 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4335 | { | |
4336 | struct nfs_inode *nfsi = NFS_I(inode); | |
4337 | struct nfs4_cached_acl *acl; | |
4338 | int ret = -ENOENT; | |
4339 | ||
4340 | spin_lock(&inode->i_lock); | |
4341 | acl = nfsi->nfs4_acl; | |
4342 | if (acl == NULL) | |
4343 | goto out; | |
4344 | if (buf == NULL) /* user is just asking for length */ | |
4345 | goto out_len; | |
4346 | if (acl->cached == 0) | |
4347 | goto out; | |
4348 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4349 | if (acl->len > buflen) | |
4350 | goto out; | |
4351 | memcpy(buf, acl->data, acl->len); | |
4352 | out_len: | |
4353 | ret = acl->len; | |
4354 | out: | |
4355 | spin_unlock(&inode->i_lock); | |
4356 | return ret; | |
4357 | } | |
4358 | ||
5794d21e | 4359 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4360 | { |
4361 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4362 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4363 | |
1f1ea6c2 | 4364 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4365 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4366 | if (acl == NULL) |
4367 | goto out; | |
4368 | acl->cached = 1; | |
5794d21e | 4369 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4370 | } else { |
4371 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4372 | if (acl == NULL) | |
4373 | goto out; | |
4374 | acl->cached = 0; | |
4375 | } | |
4376 | acl->len = acl_len; | |
4377 | out: | |
4378 | nfs4_set_cached_acl(inode, acl); | |
4379 | } | |
4380 | ||
bf118a34 AA |
4381 | /* |
4382 | * The getxattr API returns the required buffer length when called with a | |
4383 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4384 | * the required buf. On a NULL buf, we send a page of data to the server | |
4385 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4386 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4387 | * the cache. If not so, we throw away the page, and cache the required | |
4388 | * length. The next getxattr call will then produce another round trip to | |
4389 | * the server, this time with the input buf of the required size. | |
4390 | */ | |
16b4289c | 4391 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4392 | { |
bf118a34 | 4393 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4394 | struct nfs_getaclargs args = { |
4395 | .fh = NFS_FH(inode), | |
4396 | .acl_pages = pages, | |
4397 | .acl_len = buflen, | |
4398 | }; | |
663c79b3 BH |
4399 | struct nfs_getaclres res = { |
4400 | .acl_len = buflen, | |
4401 | }; | |
aa1870af BF |
4402 | struct rpc_message msg = { |
4403 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4404 | .rpc_argp = &args, | |
663c79b3 | 4405 | .rpc_resp = &res, |
aa1870af | 4406 | }; |
21f498c2 TM |
4407 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4408 | int ret = -ENOMEM, i; | |
aa1870af | 4409 | |
bf118a34 AA |
4410 | /* As long as we're doing a round trip to the server anyway, |
4411 | * let's be prepared for a page of acl data. */ | |
4412 | if (npages == 0) | |
4413 | npages = 1; | |
21f498c2 TM |
4414 | if (npages > ARRAY_SIZE(pages)) |
4415 | return -ERANGE; | |
5a006899 | 4416 | |
bf118a34 AA |
4417 | for (i = 0; i < npages; i++) { |
4418 | pages[i] = alloc_page(GFP_KERNEL); | |
4419 | if (!pages[i]) | |
4420 | goto out_free; | |
e50a1c2e | 4421 | } |
5a006899 SP |
4422 | |
4423 | /* for decoding across pages */ | |
4424 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4425 | if (!res.acl_scratch) | |
4426 | goto out_free; | |
4427 | ||
bf118a34 AA |
4428 | args.acl_len = npages * PAGE_SIZE; |
4429 | args.acl_pgbase = 0; | |
5a006899 | 4430 | |
de040bec | 4431 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4432 | __func__, buf, buflen, npages, args.acl_len); |
4433 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4434 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4435 | if (ret) |
4436 | goto out_free; | |
bf118a34 | 4437 | |
1f1ea6c2 TM |
4438 | /* Handle the case where the passed-in buffer is too short */ |
4439 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4440 | /* Did the user only issue a request for the acl length? */ | |
4441 | if (buf == NULL) | |
4442 | goto out_ok; | |
e50a1c2e | 4443 | ret = -ERANGE; |
1f1ea6c2 | 4444 | goto out_free; |
e50a1c2e | 4445 | } |
1f1ea6c2 | 4446 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4447 | if (buf) { |
4448 | if (res.acl_len > buflen) { | |
4449 | ret = -ERANGE; | |
4450 | goto out_free; | |
4451 | } | |
1f1ea6c2 | 4452 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4453 | } |
1f1ea6c2 TM |
4454 | out_ok: |
4455 | ret = res.acl_len; | |
e50a1c2e | 4456 | out_free: |
bf118a34 AA |
4457 | for (i = 0; i < npages; i++) |
4458 | if (pages[i]) | |
4459 | __free_page(pages[i]); | |
331818f1 TM |
4460 | if (res.acl_scratch) |
4461 | __free_page(res.acl_scratch); | |
aa1870af BF |
4462 | return ret; |
4463 | } | |
4464 | ||
16b4289c TM |
4465 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4466 | { | |
4467 | struct nfs4_exception exception = { }; | |
4468 | ssize_t ret; | |
4469 | do { | |
4470 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4471 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4472 | if (ret >= 0) |
4473 | break; | |
4474 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4475 | } while (exception.retry); | |
4476 | return ret; | |
4477 | } | |
4478 | ||
e50a1c2e BF |
4479 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4480 | { | |
4481 | struct nfs_server *server = NFS_SERVER(inode); | |
4482 | int ret; | |
4483 | ||
4484 | if (!nfs4_server_supports_acls(server)) | |
4485 | return -EOPNOTSUPP; | |
4486 | ret = nfs_revalidate_inode(server, inode); | |
4487 | if (ret < 0) | |
4488 | return ret; | |
08a22b39 AK |
4489 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4490 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4491 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4492 | if (ret != -ENOENT) | |
bf118a34 AA |
4493 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4494 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4495 | return ret; |
4496 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4497 | } | |
4498 | ||
16b4289c | 4499 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4500 | { |
4501 | struct nfs_server *server = NFS_SERVER(inode); | |
4502 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4503 | struct nfs_setaclargs arg = { | |
4504 | .fh = NFS_FH(inode), | |
4505 | .acl_pages = pages, | |
4506 | .acl_len = buflen, | |
4507 | }; | |
73c403a9 | 4508 | struct nfs_setaclres res; |
4b580ee3 BF |
4509 | struct rpc_message msg = { |
4510 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4511 | .rpc_argp = &arg, | |
73c403a9 | 4512 | .rpc_resp = &res, |
4b580ee3 | 4513 | }; |
21f498c2 | 4514 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4515 | int ret, i; |
4b580ee3 BF |
4516 | |
4517 | if (!nfs4_server_supports_acls(server)) | |
4518 | return -EOPNOTSUPP; | |
21f498c2 TM |
4519 | if (npages > ARRAY_SIZE(pages)) |
4520 | return -ERANGE; | |
e9e3d724 NH |
4521 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4522 | if (i < 0) | |
4523 | return i; | |
57ec14c5 | 4524 | nfs4_inode_return_delegation(inode); |
7c513058 | 4525 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4526 | |
4527 | /* | |
4528 | * Free each page after tx, so the only ref left is | |
4529 | * held by the network stack | |
4530 | */ | |
4531 | for (; i > 0; i--) | |
4532 | put_page(pages[i-1]); | |
4533 | ||
08a22b39 AK |
4534 | /* |
4535 | * Acl update can result in inode attribute update. | |
4536 | * so mark the attribute cache invalid. | |
4537 | */ | |
4538 | spin_lock(&inode->i_lock); | |
4539 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4540 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4541 | nfs_access_zap_cache(inode); |
4542 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4543 | return ret; |
4544 | } | |
4545 | ||
16b4289c TM |
4546 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4547 | { | |
4548 | struct nfs4_exception exception = { }; | |
4549 | int err; | |
4550 | do { | |
c1578b76 TM |
4551 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4552 | trace_nfs4_set_acl(inode, err); | |
4553 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4554 | &exception); |
4555 | } while (exception.retry); | |
4556 | return err; | |
4557 | } | |
4558 | ||
aa9c2669 DQ |
4559 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4560 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4561 | size_t buflen) | |
4562 | { | |
4563 | struct nfs_server *server = NFS_SERVER(inode); | |
4564 | struct nfs_fattr fattr; | |
4565 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4566 | ||
4567 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4568 | struct nfs4_getattr_arg args = { | |
4569 | .fh = NFS_FH(inode), | |
4570 | .bitmask = bitmask, | |
4571 | }; | |
4572 | struct nfs4_getattr_res res = { | |
4573 | .fattr = &fattr, | |
4574 | .label = &label, | |
4575 | .server = server, | |
4576 | }; | |
4577 | struct rpc_message msg = { | |
4578 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4579 | .rpc_argp = &args, | |
4580 | .rpc_resp = &res, | |
4581 | }; | |
4582 | int ret; | |
4583 | ||
4584 | nfs_fattr_init(&fattr); | |
4585 | ||
4586 | ret = rpc_call_sync(server->client, &msg, 0); | |
4587 | if (ret) | |
4588 | return ret; | |
4589 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4590 | return -ENOENT; | |
4591 | if (buflen < label.len) | |
4592 | return -ERANGE; | |
4593 | return 0; | |
4594 | } | |
4595 | ||
4596 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4597 | size_t buflen) | |
4598 | { | |
4599 | struct nfs4_exception exception = { }; | |
4600 | int err; | |
4601 | ||
4602 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4603 | return -EOPNOTSUPP; | |
4604 | ||
4605 | do { | |
c1578b76 TM |
4606 | err = _nfs4_get_security_label(inode, buf, buflen); |
4607 | trace_nfs4_get_security_label(inode, err); | |
4608 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4609 | &exception); |
4610 | } while (exception.retry); | |
4611 | return err; | |
4612 | } | |
4613 | ||
4614 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4615 | struct nfs4_label *ilabel, | |
4616 | struct nfs_fattr *fattr, | |
4617 | struct nfs4_label *olabel) | |
4618 | { | |
4619 | ||
4620 | struct iattr sattr = {0}; | |
4621 | struct nfs_server *server = NFS_SERVER(inode); | |
4622 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
4623 | struct nfs_setattrargs args = { | |
4624 | .fh = NFS_FH(inode), | |
4625 | .iap = &sattr, | |
4626 | .server = server, | |
4627 | .bitmask = bitmask, | |
4628 | .label = ilabel, | |
4629 | }; | |
4630 | struct nfs_setattrres res = { | |
4631 | .fattr = fattr, | |
4632 | .label = olabel, | |
4633 | .server = server, | |
4634 | }; | |
4635 | struct rpc_message msg = { | |
4636 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
4637 | .rpc_argp = &args, | |
4638 | .rpc_resp = &res, | |
4639 | }; | |
4640 | int status; | |
4641 | ||
4642 | nfs4_stateid_copy(&args.stateid, &zero_stateid); | |
4643 | ||
4644 | status = rpc_call_sync(server->client, &msg, 0); | |
4645 | if (status) | |
4646 | dprintk("%s failed: %d\n", __func__, status); | |
4647 | ||
4648 | return status; | |
4649 | } | |
4650 | ||
4651 | static int nfs4_do_set_security_label(struct inode *inode, | |
4652 | struct nfs4_label *ilabel, | |
4653 | struct nfs_fattr *fattr, | |
4654 | struct nfs4_label *olabel) | |
4655 | { | |
4656 | struct nfs4_exception exception = { }; | |
4657 | int err; | |
4658 | ||
4659 | do { | |
c1578b76 TM |
4660 | err = _nfs4_do_set_security_label(inode, ilabel, |
4661 | fattr, olabel); | |
4662 | trace_nfs4_set_security_label(inode, err); | |
4663 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4664 | &exception); |
4665 | } while (exception.retry); | |
4666 | return err; | |
4667 | } | |
4668 | ||
4669 | static int | |
4670 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4671 | { | |
4672 | struct nfs4_label ilabel, *olabel = NULL; | |
4673 | struct nfs_fattr fattr; | |
4674 | struct rpc_cred *cred; | |
4675 | struct inode *inode = dentry->d_inode; | |
4676 | int status; | |
4677 | ||
4678 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4679 | return -EOPNOTSUPP; | |
4680 | ||
4681 | nfs_fattr_init(&fattr); | |
4682 | ||
4683 | ilabel.pi = 0; | |
4684 | ilabel.lfs = 0; | |
4685 | ilabel.label = (char *)buf; | |
4686 | ilabel.len = buflen; | |
4687 | ||
4688 | cred = rpc_lookup_cred(); | |
4689 | if (IS_ERR(cred)) | |
4690 | return PTR_ERR(cred); | |
4691 | ||
4692 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4693 | if (IS_ERR(olabel)) { | |
4694 | status = -PTR_ERR(olabel); | |
4695 | goto out; | |
4696 | } | |
4697 | ||
4698 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4699 | if (status == 0) | |
4700 | nfs_setsecurity(inode, &fattr, olabel); | |
4701 | ||
4702 | nfs4_label_free(olabel); | |
4703 | out: | |
4704 | put_rpccred(cred); | |
4705 | return status; | |
4706 | } | |
4707 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4708 | ||
4709 | ||
1da177e4 | 4710 | static int |
aa5190d0 | 4711 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4712 | { |
aa5190d0 TM |
4713 | struct nfs_client *clp = server->nfs_client; |
4714 | ||
4715 | if (task->tk_status >= 0) | |
1da177e4 LT |
4716 | return 0; |
4717 | switch(task->tk_status) { | |
a1d0b5ee | 4718 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4719 | case -NFS4ERR_ADMIN_REVOKED: |
4720 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4721 | if (state == NULL) |
4722 | break; | |
4723 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4724 | case -NFS4ERR_OPENMODE: |
4725 | if (state == NULL) | |
4726 | break; | |
5d422301 TM |
4727 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4728 | goto stateid_invalid; | |
0400a6b0 | 4729 | goto wait_on_recovery; |
0ced63d1 | 4730 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4731 | if (state != NULL) { |
4732 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4733 | goto stateid_invalid; | |
4734 | } | |
1da177e4 | 4735 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4736 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4737 | nfs4_schedule_lease_recovery(clp); |
4738 | goto wait_on_recovery; | |
4745e315 AA |
4739 | #if defined(CONFIG_NFS_V4_1) |
4740 | case -NFS4ERR_BADSESSION: | |
4741 | case -NFS4ERR_BADSLOT: | |
4742 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4743 | case -NFS4ERR_DEADSESSION: | |
4744 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4745 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4746 | case -NFS4ERR_SEQ_MISORDERED: | |
4747 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4748 | task->tk_status); | |
9f594791 | 4749 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4750 | task->tk_status = 0; |
4751 | return -EAGAIN; | |
4752 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4753 | case -NFS4ERR_DELAY: |
aa5190d0 | 4754 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4755 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4756 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4757 | task->tk_status = 0; | |
4758 | return -EAGAIN; | |
a8a4ae3a | 4759 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4760 | case -NFS4ERR_OLD_STATEID: |
4761 | task->tk_status = 0; | |
4762 | return -EAGAIN; | |
4763 | } | |
4764 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4765 | return 0; | |
5d422301 TM |
4766 | stateid_invalid: |
4767 | task->tk_status = -EIO; | |
4768 | return 0; | |
0400a6b0 | 4769 | wait_on_recovery: |
a2c0b9e2 | 4770 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4771 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4772 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4773 | task->tk_status = 0; | |
4774 | return -EAGAIN; | |
1da177e4 LT |
4775 | } |
4776 | ||
f092075d CL |
4777 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4778 | nfs4_verifier *bootverf) | |
cd93710e CL |
4779 | { |
4780 | __be32 verf[2]; | |
4781 | ||
2c820d9a CL |
4782 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4783 | /* An impossible timestamp guarantees this value | |
4784 | * will never match a generated boot time. */ | |
4785 | verf[0] = 0; | |
17f26b12 | 4786 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4787 | } else { |
f092075d | 4788 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4789 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4790 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4791 | } |
cd93710e CL |
4792 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4793 | } | |
4794 | ||
e984a55a CL |
4795 | static unsigned int |
4796 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4797 | char *buf, size_t len) | |
4798 | { | |
4799 | unsigned int result; | |
4800 | ||
4801 | rcu_read_lock(); | |
4802 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4803 | clp->cl_ipaddr, | |
4804 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4805 | RPC_DISPLAY_ADDR), | |
4806 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4807 | RPC_DISPLAY_PROTO)); | |
4808 | rcu_read_unlock(); | |
4809 | return result; | |
4810 | } | |
4811 | ||
4812 | static unsigned int | |
4813 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4814 | char *buf, size_t len) | |
4815 | { | |
55b59293 | 4816 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4817 | |
4818 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4819 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4820 | clp->rpc_ops->version, | |
4821 | clp->cl_minorversion, | |
4822 | nfs4_client_id_uniquifier, | |
4823 | nodename); | |
e984a55a CL |
4824 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4825 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4826 | nodename); |
e984a55a CL |
4827 | } |
4828 | ||
6bbb4ae8 CL |
4829 | /** |
4830 | * nfs4_proc_setclientid - Negotiate client ID | |
4831 | * @clp: state data structure | |
4832 | * @program: RPC program for NFSv4 callback service | |
4833 | * @port: IP port number for NFS4 callback service | |
4834 | * @cred: RPC credential to use for this call | |
4835 | * @res: where to place the result | |
4836 | * | |
4837 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4838 | */ | |
bb8b27e5 TM |
4839 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4840 | unsigned short port, struct rpc_cred *cred, | |
4841 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4842 | { |
4843 | nfs4_verifier sc_verifier; | |
4844 | struct nfs4_setclientid setclientid = { | |
4845 | .sc_verifier = &sc_verifier, | |
4846 | .sc_prog = program, | |
f4eecd5d | 4847 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4848 | }; |
4849 | struct rpc_message msg = { | |
4850 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4851 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4852 | .rpc_resp = res, |
286d7d6a | 4853 | .rpc_cred = cred, |
1da177e4 | 4854 | }; |
6bbb4ae8 | 4855 | int status; |
1da177e4 | 4856 | |
de734831 | 4857 | /* nfs_client_id4 */ |
f092075d | 4858 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4859 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4860 | setclientid.sc_name_len = | |
4861 | nfs4_init_uniform_client_string(clp, | |
4862 | setclientid.sc_name, | |
4863 | sizeof(setclientid.sc_name)); | |
4864 | else | |
4865 | setclientid.sc_name_len = | |
4866 | nfs4_init_nonuniform_client_string(clp, | |
4867 | setclientid.sc_name, | |
4868 | sizeof(setclientid.sc_name)); | |
de734831 | 4869 | /* cb_client4 */ |
e984a55a | 4870 | rcu_read_lock(); |
de734831 | 4871 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
fe2d5395 | 4872 | sizeof(setclientid.sc_netid), "%s", |
d4d3c507 CL |
4873 | rpc_peeraddr2str(clp->cl_rpcclient, |
4874 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4875 | rcu_read_unlock(); |
4876 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4877 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4878 | clp->cl_ipaddr, port >> 8, port & 255); |
4879 | ||
6bbb4ae8 CL |
4880 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4881 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4882 | setclientid.sc_name_len, setclientid.sc_name); | |
4883 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4884 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4885 | dprintk("NFS reply setclientid: %d\n", status); |
4886 | return status; | |
1da177e4 LT |
4887 | } |
4888 | ||
6bbb4ae8 CL |
4889 | /** |
4890 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4891 | * @clp: state data structure | |
4892 | * @res: result of a previous SETCLIENTID | |
4893 | * @cred: RPC credential to use for this call | |
4894 | * | |
4895 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4896 | */ | |
fd954ae1 | 4897 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4898 | struct nfs4_setclientid_res *arg, |
4899 | struct rpc_cred *cred) | |
1da177e4 | 4900 | { |
1da177e4 LT |
4901 | struct rpc_message msg = { |
4902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4903 | .rpc_argp = arg, |
286d7d6a | 4904 | .rpc_cred = cred, |
1da177e4 | 4905 | }; |
1da177e4 LT |
4906 | int status; |
4907 | ||
6bbb4ae8 CL |
4908 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4909 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4910 | clp->cl_clientid); | |
1bd714f2 | 4911 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4912 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4913 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4914 | return status; |
4915 | } | |
4916 | ||
fe650407 TM |
4917 | struct nfs4_delegreturndata { |
4918 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4919 | struct nfs4_delegreturnres res; |
fe650407 TM |
4920 | struct nfs_fh fh; |
4921 | nfs4_stateid stateid; | |
26e976a8 | 4922 | unsigned long timestamp; |
fa178f29 | 4923 | struct nfs_fattr fattr; |
fe650407 TM |
4924 | int rpc_status; |
4925 | }; | |
4926 | ||
fe650407 TM |
4927 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4928 | { | |
4929 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4930 | |
14516c3a TM |
4931 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4932 | return; | |
938e1010 | 4933 | |
ca8acf8d | 4934 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 RL |
4935 | switch (task->tk_status) { |
4936 | case -NFS4ERR_STALE_STATEID: | |
4937 | case -NFS4ERR_EXPIRED: | |
4938 | case 0: | |
fa178f29 | 4939 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4940 | break; |
4941 | default: | |
4942 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4943 | -EAGAIN) { | |
d00c5d43 | 4944 | rpc_restart_call_prepare(task); |
79708861 RL |
4945 | return; |
4946 | } | |
4947 | } | |
4948 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4949 | } |
4950 | ||
4951 | static void nfs4_delegreturn_release(void *calldata) | |
4952 | { | |
fe650407 TM |
4953 | kfree(calldata); |
4954 | } | |
4955 | ||
938e1010 AA |
4956 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
4957 | { | |
4958 | struct nfs4_delegreturndata *d_data; | |
4959 | ||
4960 | d_data = (struct nfs4_delegreturndata *)data; | |
4961 | ||
d9afbd1b TM |
4962 | nfs4_setup_sequence(d_data->res.server, |
4963 | &d_data->args.seq_args, | |
4964 | &d_data->res.seq_res, | |
4965 | task); | |
938e1010 | 4966 | } |
938e1010 | 4967 | |
c8d149f3 | 4968 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 4969 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
4970 | .rpc_call_done = nfs4_delegreturn_done, |
4971 | .rpc_release = nfs4_delegreturn_release, | |
4972 | }; | |
4973 | ||
e6f81075 | 4974 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4975 | { |
4976 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4977 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4978 | struct rpc_task *task; |
5138fde0 TM |
4979 | struct rpc_message msg = { |
4980 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4981 | .rpc_cred = cred, | |
4982 | }; | |
c970aa85 TM |
4983 | struct rpc_task_setup task_setup_data = { |
4984 | .rpc_client = server->client, | |
5138fde0 | 4985 | .rpc_message = &msg, |
c970aa85 TM |
4986 | .callback_ops = &nfs4_delegreturn_ops, |
4987 | .flags = RPC_TASK_ASYNC, | |
4988 | }; | |
e6f81075 | 4989 | int status = 0; |
fe650407 | 4990 | |
8535b2be | 4991 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4992 | if (data == NULL) |
4993 | return -ENOMEM; | |
a9c92d6b | 4994 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4995 | data->args.fhandle = &data->fh; |
4996 | data->args.stateid = &data->stateid; | |
9e907fec | 4997 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4998 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4999 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5000 | data->res.fattr = &data->fattr; |
5001 | data->res.server = server; | |
5138fde0 | 5002 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5003 | data->timestamp = jiffies; |
fe650407 TM |
5004 | data->rpc_status = 0; |
5005 | ||
c970aa85 | 5006 | task_setup_data.callback_data = data; |
1174dd1f TM |
5007 | msg.rpc_argp = &data->args; |
5008 | msg.rpc_resp = &data->res; | |
c970aa85 | 5009 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5010 | if (IS_ERR(task)) |
fe650407 | 5011 | return PTR_ERR(task); |
e6f81075 TM |
5012 | if (!issync) |
5013 | goto out; | |
fe650407 | 5014 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5015 | if (status != 0) |
5016 | goto out; | |
5017 | status = data->rpc_status; | |
e144cbcc TM |
5018 | if (status == 0) |
5019 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5020 | else | |
5021 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5022 | out: |
e6b3c4db | 5023 | rpc_put_task(task); |
fe650407 | 5024 | return status; |
1da177e4 LT |
5025 | } |
5026 | ||
e6f81075 | 5027 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5028 | { |
5029 | struct nfs_server *server = NFS_SERVER(inode); | |
5030 | struct nfs4_exception exception = { }; | |
5031 | int err; | |
5032 | do { | |
e6f81075 | 5033 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5034 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5035 | switch (err) { |
5036 | case -NFS4ERR_STALE_STATEID: | |
5037 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5038 | case 0: |
5039 | return 0; | |
5040 | } | |
5041 | err = nfs4_handle_exception(server, err, &exception); | |
5042 | } while (exception.retry); | |
5043 | return err; | |
5044 | } | |
5045 | ||
5046 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5047 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5048 | ||
5049 | /* | |
5050 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5051 | */ | |
5052 | static unsigned long | |
5053 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5054 | { | |
416ad3c9 | 5055 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5056 | timeout <<= 1; |
5057 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5058 | return NFS4_LOCK_MAXTIMEOUT; | |
5059 | return timeout; | |
5060 | } | |
5061 | ||
1da177e4 LT |
5062 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5063 | { | |
5064 | struct inode *inode = state->inode; | |
5065 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5066 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5067 | struct nfs_lockt_args arg = { |
1da177e4 | 5068 | .fh = NFS_FH(inode), |
911d1aaf | 5069 | .fl = request, |
1da177e4 | 5070 | }; |
911d1aaf TM |
5071 | struct nfs_lockt_res res = { |
5072 | .denied = request, | |
1da177e4 LT |
5073 | }; |
5074 | struct rpc_message msg = { | |
5075 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5076 | .rpc_argp = &arg, | |
5077 | .rpc_resp = &res, | |
5078 | .rpc_cred = state->owner->so_cred, | |
5079 | }; | |
1da177e4 LT |
5080 | struct nfs4_lock_state *lsp; |
5081 | int status; | |
5082 | ||
911d1aaf | 5083 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5084 | status = nfs4_set_lock_state(state, request); |
5085 | if (status != 0) | |
5086 | goto out; | |
5087 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5088 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5089 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5090 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5091 | switch (status) { |
5092 | case 0: | |
5093 | request->fl_type = F_UNLCK; | |
5094 | break; | |
5095 | case -NFS4ERR_DENIED: | |
5096 | status = 0; | |
1da177e4 | 5097 | } |
70cc6487 | 5098 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 5099 | out: |
1da177e4 LT |
5100 | return status; |
5101 | } | |
5102 | ||
5103 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5104 | { | |
5105 | struct nfs4_exception exception = { }; | |
5106 | int err; | |
5107 | ||
5108 | do { | |
d1b748a5 TM |
5109 | err = _nfs4_proc_getlk(state, cmd, request); |
5110 | trace_nfs4_get_lock(request, state, cmd, err); | |
5111 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5112 | &exception); |
5113 | } while (exception.retry); | |
5114 | return err; | |
5115 | } | |
5116 | ||
5117 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5118 | { | |
5119 | int res = 0; | |
5120 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5121 | case FL_POSIX: | |
5122 | res = posix_lock_file_wait(file, fl); | |
5123 | break; | |
5124 | case FL_FLOCK: | |
5125 | res = flock_lock_file_wait(file, fl); | |
5126 | break; | |
5127 | default: | |
5128 | BUG(); | |
5129 | } | |
1da177e4 LT |
5130 | return res; |
5131 | } | |
5132 | ||
faf5f49c | 5133 | struct nfs4_unlockdata { |
911d1aaf TM |
5134 | struct nfs_locku_args arg; |
5135 | struct nfs_locku_res res; | |
faf5f49c TM |
5136 | struct nfs4_lock_state *lsp; |
5137 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5138 | struct file_lock fl; |
5139 | const struct nfs_server *server; | |
26e976a8 | 5140 | unsigned long timestamp; |
faf5f49c TM |
5141 | }; |
5142 | ||
911d1aaf TM |
5143 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5144 | struct nfs_open_context *ctx, | |
5145 | struct nfs4_lock_state *lsp, | |
5146 | struct nfs_seqid *seqid) | |
5147 | { | |
5148 | struct nfs4_unlockdata *p; | |
5149 | struct inode *inode = lsp->ls_state->inode; | |
5150 | ||
8535b2be | 5151 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5152 | if (p == NULL) |
5153 | return NULL; | |
5154 | p->arg.fh = NFS_FH(inode); | |
5155 | p->arg.fl = &p->fl; | |
5156 | p->arg.seqid = seqid; | |
c1d51931 | 5157 | p->res.seqid = seqid; |
911d1aaf TM |
5158 | p->arg.stateid = &lsp->ls_stateid; |
5159 | p->lsp = lsp; | |
5160 | atomic_inc(&lsp->ls_count); | |
5161 | /* Ensure we don't close file until we're done freeing locks! */ | |
5162 | p->ctx = get_nfs_open_context(ctx); | |
5163 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5164 | p->server = NFS_SERVER(inode); | |
5165 | return p; | |
5166 | } | |
5167 | ||
06f814a3 | 5168 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5169 | { |
963d8fe5 | 5170 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5171 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5172 | nfs4_put_lock_state(calldata->lsp); |
5173 | put_nfs_open_context(calldata->ctx); | |
5174 | kfree(calldata); | |
faf5f49c TM |
5175 | } |
5176 | ||
963d8fe5 | 5177 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5178 | { |
963d8fe5 | 5179 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5180 | |
14516c3a TM |
5181 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5182 | return; | |
faf5f49c TM |
5183 | switch (task->tk_status) { |
5184 | case 0: | |
f597c537 TM |
5185 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5186 | &calldata->res.stateid); | |
26e976a8 | 5187 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5188 | break; |
9e33bed5 TM |
5189 | case -NFS4ERR_BAD_STATEID: |
5190 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5191 | case -NFS4ERR_STALE_STATEID: |
5192 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5193 | break; |
5194 | default: | |
9e33bed5 | 5195 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5196 | rpc_restart_call_prepare(task); |
faf5f49c | 5197 | } |
2b1bc308 | 5198 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5199 | } |
5200 | ||
4ce70ada | 5201 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5202 | { |
4ce70ada | 5203 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5204 | |
911d1aaf | 5205 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5206 | goto out_wait; |
795a88c9 | 5207 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5208 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5209 | goto out_no_action; |
faf5f49c | 5210 | } |
26e976a8 | 5211 | calldata->timestamp = jiffies; |
035168ab | 5212 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5213 | &calldata->arg.seq_args, |
2240a9e2 TM |
5214 | &calldata->res.seq_res, |
5215 | task) != 0) | |
5216 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5217 | return; |
5218 | out_no_action: | |
5219 | task->tk_action = NULL; | |
5220 | out_wait: | |
5221 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5222 | } |
5223 | ||
963d8fe5 | 5224 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5225 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5226 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5227 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5228 | }; |
5229 | ||
a5d16a4d TM |
5230 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5231 | struct nfs_open_context *ctx, | |
5232 | struct nfs4_lock_state *lsp, | |
5233 | struct nfs_seqid *seqid) | |
5234 | { | |
5235 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5236 | struct rpc_message msg = { |
5237 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5238 | .rpc_cred = ctx->cred, | |
5239 | }; | |
c970aa85 TM |
5240 | struct rpc_task_setup task_setup_data = { |
5241 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5242 | .rpc_message = &msg, |
c970aa85 | 5243 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5244 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5245 | .flags = RPC_TASK_ASYNC, |
5246 | }; | |
a5d16a4d | 5247 | |
fa940720 WAA |
5248 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5249 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5250 | ||
137d6aca FF |
5251 | /* Ensure this is an unlock - when canceling a lock, the |
5252 | * canceled lock is passed in, and it won't be an unlock. | |
5253 | */ | |
5254 | fl->fl_type = F_UNLCK; | |
5255 | ||
a5d16a4d TM |
5256 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5257 | if (data == NULL) { | |
5258 | nfs_free_seqid(seqid); | |
5259 | return ERR_PTR(-ENOMEM); | |
5260 | } | |
5261 | ||
a9c92d6b | 5262 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5263 | msg.rpc_argp = &data->arg; |
5264 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5265 | task_setup_data.callback_data = data; |
5266 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5267 | } |
5268 | ||
faf5f49c TM |
5269 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5270 | { | |
65b62a29 TM |
5271 | struct inode *inode = state->inode; |
5272 | struct nfs4_state_owner *sp = state->owner; | |
5273 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5274 | struct nfs_seqid *seqid; |
1da177e4 | 5275 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5276 | struct rpc_task *task; |
5277 | int status = 0; | |
536ff0f8 | 5278 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5279 | |
8d0a8a9d | 5280 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5281 | /* Unlock _before_ we do the RPC call */ |
5282 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5283 | /* Exclude nfs_delegation_claim_locks() */ |
5284 | mutex_lock(&sp->so_delegreturn_mutex); | |
5285 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5286 | down_read(&nfsi->rwsem); |
5287 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5288 | up_read(&nfsi->rwsem); | |
65b62a29 | 5289 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5290 | goto out; |
19e03c57 TM |
5291 | } |
5292 | up_read(&nfsi->rwsem); | |
65b62a29 | 5293 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5294 | if (status != 0) |
9b073574 TM |
5295 | goto out; |
5296 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5297 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5298 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5299 | goto out; | |
8535b2be | 5300 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5301 | status = -ENOMEM; |
911d1aaf | 5302 | if (seqid == NULL) |
9b073574 | 5303 | goto out; |
cd3758e3 | 5304 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5305 | status = PTR_ERR(task); |
5306 | if (IS_ERR(task)) | |
9b073574 | 5307 | goto out; |
a5d16a4d | 5308 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5309 | rpc_put_task(task); |
9b073574 | 5310 | out: |
536ff0f8 | 5311 | request->fl_flags = fl_flags; |
d1b748a5 | 5312 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5313 | return status; |
5314 | } | |
5315 | ||
a5d16a4d TM |
5316 | struct nfs4_lockdata { |
5317 | struct nfs_lock_args arg; | |
5318 | struct nfs_lock_res res; | |
5319 | struct nfs4_lock_state *lsp; | |
5320 | struct nfs_open_context *ctx; | |
5321 | struct file_lock fl; | |
26e976a8 | 5322 | unsigned long timestamp; |
a5d16a4d TM |
5323 | int rpc_status; |
5324 | int cancelled; | |
66179efe | 5325 | struct nfs_server *server; |
a5d16a4d TM |
5326 | }; |
5327 | ||
5328 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5329 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5330 | gfp_t gfp_mask) | |
1da177e4 | 5331 | { |
a5d16a4d TM |
5332 | struct nfs4_lockdata *p; |
5333 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5334 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5335 | |
8535b2be | 5336 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5337 | if (p == NULL) |
5338 | return NULL; | |
5339 | ||
5340 | p->arg.fh = NFS_FH(inode); | |
5341 | p->arg.fl = &p->fl; | |
8535b2be | 5342 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5343 | if (p->arg.open_seqid == NULL) |
5344 | goto out_free; | |
8535b2be | 5345 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5346 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5347 | goto out_free_seqid; |
a5d16a4d | 5348 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5349 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5350 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5351 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5352 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5353 | p->lsp = lsp; |
66179efe | 5354 | p->server = server; |
a5d16a4d TM |
5355 | atomic_inc(&lsp->ls_count); |
5356 | p->ctx = get_nfs_open_context(ctx); | |
5357 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5358 | return p; | |
2f74c0a0 TM |
5359 | out_free_seqid: |
5360 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5361 | out_free: |
5362 | kfree(p); | |
5363 | return NULL; | |
5364 | } | |
5365 | ||
5366 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5367 | { | |
5368 | struct nfs4_lockdata *data = calldata; | |
5369 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5370 | |
3110ff80 | 5371 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5372 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5373 | goto out_wait; |
a5d16a4d TM |
5374 | /* Do we need to do an open_to_lock_owner? */ |
5375 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5376 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5377 | goto out_release_lock_seqid; |
8fe72bac | 5378 | } |
8e472f33 | 5379 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5380 | data->arg.new_lock_owner = 1; |
c1d51931 | 5381 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5382 | } else |
5383 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5384 | if (!nfs4_valid_open_stateid(state)) { |
5385 | data->rpc_status = -EBADF; | |
5386 | task->tk_action = NULL; | |
5387 | goto out_release_open_seqid; | |
5388 | } | |
26e976a8 | 5389 | data->timestamp = jiffies; |
035168ab TM |
5390 | if (nfs4_setup_sequence(data->server, |
5391 | &data->arg.seq_args, | |
2240a9e2 | 5392 | &data->res.seq_res, |
d9afbd1b | 5393 | task) == 0) |
66179efe | 5394 | return; |
5d422301 | 5395 | out_release_open_seqid: |
2240a9e2 TM |
5396 | nfs_release_seqid(data->arg.open_seqid); |
5397 | out_release_lock_seqid: | |
5398 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5399 | out_wait: |
5400 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5401 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5402 | } |
5403 | ||
a5d16a4d TM |
5404 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5405 | { | |
5406 | struct nfs4_lockdata *data = calldata; | |
5407 | ||
3110ff80 | 5408 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5409 | |
14516c3a TM |
5410 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5411 | return; | |
66179efe | 5412 | |
a5d16a4d | 5413 | data->rpc_status = task->tk_status; |
a5d16a4d | 5414 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5415 | if (data->rpc_status == 0) |
5416 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5417 | else | |
5418 | goto out; | |
5419 | } | |
5420 | if (data->rpc_status == 0) { | |
f597c537 | 5421 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5422 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5423 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5424 | } |
a5d16a4d | 5425 | out: |
3110ff80 | 5426 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5427 | } |
5428 | ||
5429 | static void nfs4_lock_release(void *calldata) | |
5430 | { | |
5431 | struct nfs4_lockdata *data = calldata; | |
5432 | ||
3110ff80 | 5433 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5434 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5435 | if (data->cancelled != 0) { |
5436 | struct rpc_task *task; | |
5437 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5438 | data->arg.lock_seqid); | |
5439 | if (!IS_ERR(task)) | |
bf294b41 | 5440 | rpc_put_task_async(task); |
3110ff80 | 5441 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5442 | } else |
5443 | nfs_free_seqid(data->arg.lock_seqid); | |
5444 | nfs4_put_lock_state(data->lsp); | |
5445 | put_nfs_open_context(data->ctx); | |
5446 | kfree(data); | |
3110ff80 | 5447 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5448 | } |
5449 | ||
5450 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5451 | .rpc_call_prepare = nfs4_lock_prepare, | |
5452 | .rpc_call_done = nfs4_lock_done, | |
5453 | .rpc_release = nfs4_lock_release, | |
5454 | }; | |
5455 | ||
2bee72a6 TM |
5456 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5457 | { | |
2bee72a6 TM |
5458 | switch (error) { |
5459 | case -NFS4ERR_ADMIN_REVOKED: | |
5460 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5461 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5462 | if (new_lock_owner != 0 || |
795a88c9 | 5463 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5464 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5465 | break; |
5466 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5467 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5468 | case -NFS4ERR_EXPIRED: |
5469 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5470 | }; |
5471 | } | |
5472 | ||
afe6c27c | 5473 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5474 | { |
5475 | struct nfs4_lockdata *data; | |
5476 | struct rpc_task *task; | |
5138fde0 TM |
5477 | struct rpc_message msg = { |
5478 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5479 | .rpc_cred = state->owner->so_cred, | |
5480 | }; | |
c970aa85 TM |
5481 | struct rpc_task_setup task_setup_data = { |
5482 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5483 | .rpc_message = &msg, |
c970aa85 | 5484 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5485 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5486 | .flags = RPC_TASK_ASYNC, |
5487 | }; | |
a5d16a4d TM |
5488 | int ret; |
5489 | ||
3110ff80 | 5490 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5491 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5492 | fl->fl_u.nfs4_fl.owner, |
5493 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5494 | if (data == NULL) |
5495 | return -ENOMEM; | |
5496 | if (IS_SETLKW(cmd)) | |
5497 | data->arg.block = 1; | |
a9c92d6b | 5498 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5499 | msg.rpc_argp = &data->arg; |
5500 | msg.rpc_resp = &data->res; | |
c970aa85 | 5501 | task_setup_data.callback_data = data; |
8fe72bac TM |
5502 | if (recovery_type > NFS_LOCK_NEW) { |
5503 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5504 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5505 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5506 | } | |
c970aa85 | 5507 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5508 | if (IS_ERR(task)) |
a5d16a4d | 5509 | return PTR_ERR(task); |
a5d16a4d TM |
5510 | ret = nfs4_wait_for_completion_rpc_task(task); |
5511 | if (ret == 0) { | |
5512 | ret = data->rpc_status; | |
2bee72a6 TM |
5513 | if (ret) |
5514 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5515 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5516 | } else |
5517 | data->cancelled = 1; | |
e6b3c4db | 5518 | rpc_put_task(task); |
3110ff80 | 5519 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5520 | return ret; |
1da177e4 LT |
5521 | } |
5522 | ||
5523 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5524 | { | |
202b50dc | 5525 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5526 | struct nfs4_exception exception = { |
5527 | .inode = state->inode, | |
5528 | }; | |
202b50dc TM |
5529 | int err; |
5530 | ||
5531 | do { | |
42a2d13e TM |
5532 | /* Cache the lock if possible... */ |
5533 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5534 | return 0; | |
afe6c27c | 5535 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5536 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5537 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5538 | break; |
5539 | nfs4_handle_exception(server, err, &exception); | |
5540 | } while (exception.retry); | |
5541 | return err; | |
1da177e4 LT |
5542 | } |
5543 | ||
5544 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5545 | { | |
202b50dc | 5546 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5547 | struct nfs4_exception exception = { |
5548 | .inode = state->inode, | |
5549 | }; | |
202b50dc TM |
5550 | int err; |
5551 | ||
6bfc93ef TM |
5552 | err = nfs4_set_lock_state(state, request); |
5553 | if (err != 0) | |
5554 | return err; | |
f6de7a39 | 5555 | if (!recover_lost_locks) { |
ef1820f9 N |
5556 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5557 | return 0; | |
5558 | } | |
202b50dc | 5559 | do { |
42a2d13e TM |
5560 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5561 | return 0; | |
afe6c27c | 5562 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5563 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5564 | switch (err) { |
5565 | default: | |
5566 | goto out; | |
5567 | case -NFS4ERR_GRACE: | |
5568 | case -NFS4ERR_DELAY: | |
5569 | nfs4_handle_exception(server, err, &exception); | |
5570 | err = 0; | |
5571 | } | |
202b50dc | 5572 | } while (exception.retry); |
a9ed2e25 | 5573 | out: |
202b50dc | 5574 | return err; |
1da177e4 LT |
5575 | } |
5576 | ||
f062eb6c | 5577 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5578 | /** |
5579 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5580 | * | |
5581 | * @state: NFSv4 state for an inode | |
5582 | * | |
5583 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5584 | * Otherwise a negative NFS4ERR value is returned. | |
5585 | */ | |
b01dd1d8 | 5586 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5587 | { |
eb64cf96 | 5588 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5589 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5590 | struct nfs_server *server = NFS_SERVER(state->inode); |
5591 | ||
b01dd1d8 | 5592 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5593 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5594 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5595 | ||
5596 | status = nfs41_test_stateid(server, | |
5597 | &lsp->ls_stateid, | |
5598 | cred); | |
08cb47fa | 5599 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5600 | if (status != NFS_OK) { |
3e60ffdd CL |
5601 | /* Free the stateid unless the server |
5602 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5603 | if (status != -NFS4ERR_BAD_STATEID) |
5604 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5605 | &lsp->ls_stateid, |
5606 | cred); | |
795a88c9 | 5607 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5608 | ret = status; |
5609 | } | |
5610 | } | |
5611 | }; | |
5612 | ||
5613 | return ret; | |
5614 | } | |
5615 | ||
5616 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5617 | { | |
5618 | int status = NFS_OK; | |
5619 | ||
5620 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5621 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5622 | if (status != NFS_OK) |
5623 | status = nfs4_lock_expired(state, request); | |
5624 | return status; | |
f062eb6c BS |
5625 | } |
5626 | #endif | |
5627 | ||
1da177e4 LT |
5628 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5629 | { | |
9a99af49 | 5630 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5631 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5632 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5633 | unsigned int seq; |
8e469ebd | 5634 | int status = -ENOLCK; |
1da177e4 | 5635 | |
8e469ebd TM |
5636 | if ((fl_flags & FL_POSIX) && |
5637 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5638 | goto out; | |
6bfc93ef | 5639 | /* Is this a delegated open? */ |
6bfc93ef TM |
5640 | status = nfs4_set_lock_state(state, request); |
5641 | if (status != 0) | |
5642 | goto out; | |
01c3b861 TM |
5643 | request->fl_flags |= FL_ACCESS; |
5644 | status = do_vfs_lock(request->fl_file, request); | |
5645 | if (status < 0) | |
5646 | goto out; | |
19e03c57 | 5647 | down_read(&nfsi->rwsem); |
01c3b861 | 5648 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5649 | /* Yes: cache locks! */ |
01c3b861 | 5650 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5651 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5652 | status = do_vfs_lock(request->fl_file, request); | |
5653 | goto out_unlock; | |
01c3b861 | 5654 | } |
9a99af49 TM |
5655 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5656 | up_read(&nfsi->rwsem); | |
afe6c27c | 5657 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5658 | if (status != 0) |
9a99af49 TM |
5659 | goto out; |
5660 | down_read(&nfsi->rwsem); | |
5661 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5662 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5663 | goto out_unlock; |
9a99af49 | 5664 | } |
6bfc93ef | 5665 | /* Note: we always want to sleep here! */ |
01c3b861 | 5666 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5667 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5668 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5669 | "manager!\n", __func__); | |
01c3b861 | 5670 | out_unlock: |
19e03c57 | 5671 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5672 | out: |
5673 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5674 | return status; |
5675 | } | |
5676 | ||
5677 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5678 | { | |
a1d0b5ee TM |
5679 | struct nfs4_exception exception = { |
5680 | .state = state, | |
05ffe24f | 5681 | .inode = state->inode, |
a1d0b5ee | 5682 | }; |
1da177e4 LT |
5683 | int err; |
5684 | ||
5685 | do { | |
965b5d67 | 5686 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5687 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5688 | if (err == -NFS4ERR_DENIED) |
5689 | err = -EAGAIN; | |
1da177e4 | 5690 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5691 | err, &exception); |
1da177e4 LT |
5692 | } while (exception.retry); |
5693 | return err; | |
5694 | } | |
5695 | ||
5696 | static int | |
5697 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5698 | { | |
5699 | struct nfs_open_context *ctx; | |
5700 | struct nfs4_state *state; | |
5701 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5702 | int status; | |
5703 | ||
5704 | /* verify open state */ | |
cd3758e3 | 5705 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5706 | state = ctx->state; |
5707 | ||
5708 | if (request->fl_start < 0 || request->fl_end < 0) | |
5709 | return -EINVAL; | |
5710 | ||
d953126a TM |
5711 | if (IS_GETLK(cmd)) { |
5712 | if (state != NULL) | |
5713 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5714 | return 0; | |
5715 | } | |
1da177e4 LT |
5716 | |
5717 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5718 | return -EINVAL; | |
5719 | ||
d953126a TM |
5720 | if (request->fl_type == F_UNLCK) { |
5721 | if (state != NULL) | |
5722 | return nfs4_proc_unlck(state, cmd, request); | |
5723 | return 0; | |
5724 | } | |
1da177e4 | 5725 | |
d953126a TM |
5726 | if (state == NULL) |
5727 | return -ENOLCK; | |
55725513 TM |
5728 | /* |
5729 | * Don't rely on the VFS having checked the file open mode, | |
5730 | * since it won't do this for flock() locks. | |
5731 | */ | |
f44106e2 | 5732 | switch (request->fl_type) { |
55725513 TM |
5733 | case F_RDLCK: |
5734 | if (!(filp->f_mode & FMODE_READ)) | |
5735 | return -EBADF; | |
5736 | break; | |
5737 | case F_WRLCK: | |
5738 | if (!(filp->f_mode & FMODE_WRITE)) | |
5739 | return -EBADF; | |
5740 | } | |
5741 | ||
1da177e4 LT |
5742 | do { |
5743 | status = nfs4_proc_setlk(state, cmd, request); | |
5744 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5745 | break; | |
5746 | timeout = nfs4_set_lock_task_retry(timeout); | |
5747 | status = -ERESTARTSYS; | |
5748 | if (signalled()) | |
5749 | break; | |
5750 | } while(status < 0); | |
1da177e4 LT |
5751 | return status; |
5752 | } | |
5753 | ||
db4f2e63 | 5754 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5755 | { |
5756 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5757 | int err; |
5758 | ||
5759 | err = nfs4_set_lock_state(state, fl); | |
5760 | if (err != 0) | |
db4f2e63 | 5761 | return err; |
4a706fa0 | 5762 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5763 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5764 | } |
6b3b5496 | 5765 | |
cf470c3e TM |
5766 | struct nfs_release_lockowner_data { |
5767 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5768 | struct nfs_server *server; |
cf470c3e | 5769 | struct nfs_release_lockowner_args args; |
fbd4bfd1 CL |
5770 | struct nfs4_sequence_args seq_args; |
5771 | struct nfs4_sequence_res seq_res; | |
cf470c3e TM |
5772 | }; |
5773 | ||
fbd4bfd1 CL |
5774 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
5775 | { | |
5776 | struct nfs_release_lockowner_data *data = calldata; | |
5777 | nfs40_setup_sequence(data->server, | |
5778 | &data->seq_args, &data->seq_res, task); | |
5779 | } | |
5780 | ||
5781 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
5782 | { | |
5783 | struct nfs_release_lockowner_data *data = calldata; | |
5784 | nfs40_sequence_done(task, &data->seq_res); | |
5785 | } | |
5786 | ||
d3c7b7cc TM |
5787 | static void nfs4_release_lockowner_release(void *calldata) |
5788 | { | |
cf470c3e | 5789 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5790 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5791 | kfree(calldata); |
5792 | } | |
5793 | ||
17280175 | 5794 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
5795 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
5796 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
5797 | .rpc_release = nfs4_release_lockowner_release, |
5798 | }; | |
5799 | ||
c8b2d0bf | 5800 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5801 | { |
cf470c3e | 5802 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5803 | struct rpc_message msg = { |
5804 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5805 | }; | |
5806 | ||
5807 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e | 5808 | return -EINVAL; |
fbd4bfd1 | 5809 | |
cf470c3e TM |
5810 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5811 | if (!data) | |
5812 | return -ENOMEM; | |
fbd4bfd1 | 5813 | nfs4_init_sequence(&data->seq_args, &data->seq_res, 0); |
cf470c3e | 5814 | data->lsp = lsp; |
5ae67c4f | 5815 | data->server = server; |
cf470c3e TM |
5816 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5817 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5818 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 5819 | |
cf470c3e TM |
5820 | msg.rpc_argp = &data->args; |
5821 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5822 | return 0; | |
d3c7b7cc TM |
5823 | } |
5824 | ||
aa1870af BF |
5825 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5826 | ||
64c2ce8b AK |
5827 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5828 | const void *buf, size_t buflen, | |
5829 | int flags, int type) | |
6b3b5496 | 5830 | { |
64c2ce8b AK |
5831 | if (strcmp(key, "") != 0) |
5832 | return -EINVAL; | |
4b580ee3 | 5833 | |
64c2ce8b | 5834 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5835 | } |
5836 | ||
64c2ce8b AK |
5837 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5838 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5839 | { |
64c2ce8b AK |
5840 | if (strcmp(key, "") != 0) |
5841 | return -EINVAL; | |
aa1870af | 5842 | |
64c2ce8b | 5843 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5844 | } |
5845 | ||
64c2ce8b AK |
5846 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5847 | size_t list_len, const char *name, | |
5848 | size_t name_len, int type) | |
6b3b5496 | 5849 | { |
64c2ce8b | 5850 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5851 | |
096455a2 BF |
5852 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5853 | return 0; | |
64c2ce8b AK |
5854 | |
5855 | if (list && len <= list_len) | |
5856 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5857 | return len; |
6b3b5496 BF |
5858 | } |
5859 | ||
c9bccef6 DQ |
5860 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5861 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5862 | { | |
5863 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5864 | } | |
5865 | ||
5866 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5867 | const void *buf, size_t buflen, | |
5868 | int flags, int type) | |
5869 | { | |
5870 | if (security_ismaclabel(key)) | |
5871 | return nfs4_set_security_label(dentry, buf, buflen); | |
5872 | ||
5873 | return -EOPNOTSUPP; | |
5874 | } | |
5875 | ||
5876 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5877 | void *buf, size_t buflen, int type) | |
5878 | { | |
5879 | if (security_ismaclabel(key)) | |
5880 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5881 | return -EOPNOTSUPP; | |
5882 | } | |
5883 | ||
5884 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5885 | size_t list_len, const char *name, | |
5886 | size_t name_len, int type) | |
5887 | { | |
5888 | size_t len = 0; | |
5889 | ||
5890 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5891 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5892 | if (list && len <= list_len) | |
5893 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5894 | } | |
5895 | return len; | |
5896 | } | |
5897 | ||
5898 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5899 | .prefix = XATTR_SECURITY_PREFIX, | |
5900 | .list = nfs4_xattr_list_nfs4_label, | |
5901 | .get = nfs4_xattr_get_nfs4_label, | |
5902 | .set = nfs4_xattr_set_nfs4_label, | |
5903 | }; | |
5904 | #endif | |
5905 | ||
5906 | ||
533eb461 AA |
5907 | /* |
5908 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5909 | */ | |
69aaaae1 TM |
5910 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5911 | { | |
533eb461 AA |
5912 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5913 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5914 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5915 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5916 | return; |
5917 | ||
5918 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5919 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5920 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5921 | fattr->nlink = 2; | |
5922 | } | |
5923 | ||
f05d147f BS |
5924 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5925 | const struct qstr *name, | |
5926 | struct nfs4_fs_locations *fs_locations, | |
5927 | struct page *page) | |
683b57b4 TM |
5928 | { |
5929 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 5930 | u32 bitmask[3] = { |
361e624f | 5931 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5932 | }; |
5933 | struct nfs4_fs_locations_arg args = { | |
5934 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5935 | .name = name, |
683b57b4 TM |
5936 | .page = page, |
5937 | .bitmask = bitmask, | |
5938 | }; | |
22958463 BH |
5939 | struct nfs4_fs_locations_res res = { |
5940 | .fs_locations = fs_locations, | |
5941 | }; | |
683b57b4 TM |
5942 | struct rpc_message msg = { |
5943 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5944 | .rpc_argp = &args, | |
22958463 | 5945 | .rpc_resp = &res, |
683b57b4 TM |
5946 | }; |
5947 | int status; | |
5948 | ||
3110ff80 | 5949 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5950 | |
5951 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5952 | * is not supported */ | |
5953 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5954 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5955 | else | |
5956 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5957 | ||
c228fd3a | 5958 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5959 | fs_locations->server = server; |
830b8e33 | 5960 | fs_locations->nlocations = 0; |
f05d147f | 5961 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5962 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5963 | return status; |
5964 | } | |
5965 | ||
f05d147f BS |
5966 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5967 | const struct qstr *name, | |
5968 | struct nfs4_fs_locations *fs_locations, | |
5969 | struct page *page) | |
db0a9593 BS |
5970 | { |
5971 | struct nfs4_exception exception = { }; | |
5972 | int err; | |
5973 | do { | |
078ea3df TM |
5974 | err = _nfs4_proc_fs_locations(client, dir, name, |
5975 | fs_locations, page); | |
5976 | trace_nfs4_get_fs_locations(dir, name, err); | |
5977 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
5978 | &exception); |
5979 | } while (exception.retry); | |
5980 | return err; | |
5981 | } | |
5982 | ||
5ec16a85 | 5983 | /** |
a5250def WAA |
5984 | * If 'use_integrity' is true and the state managment nfs_client |
5985 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
5986 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
5987 | * Considerations sections. Otherwise, just use the user cred with the | |
5988 | * filesystem's rpc_client. | |
5ec16a85 | 5989 | */ |
a5250def | 5990 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
5991 | { |
5992 | int status; | |
5993 | struct nfs4_secinfo_arg args = { | |
5994 | .dir_fh = NFS_FH(dir), | |
5995 | .name = name, | |
5996 | }; | |
5997 | struct nfs4_secinfo_res res = { | |
5998 | .flavors = flavors, | |
5999 | }; | |
6000 | struct rpc_message msg = { | |
6001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6002 | .rpc_argp = &args, | |
6003 | .rpc_resp = &res, | |
6004 | }; | |
a5250def WAA |
6005 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
6006 | ||
6007 | if (use_integrity) { | |
6008 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
6009 | msg.rpc_cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); | |
6010 | } | |
5a5ea0d4 BS |
6011 | |
6012 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6013 | |
6014 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6015 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6016 | ||
a5250def WAA |
6017 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6018 | &res.seq_res, 0); | |
5a5ea0d4 | 6019 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def WAA |
6020 | |
6021 | if (msg.rpc_cred) | |
6022 | put_rpccred(msg.rpc_cred); | |
6023 | ||
5a5ea0d4 BS |
6024 | return status; |
6025 | } | |
6026 | ||
72de53ec BS |
6027 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6028 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6029 | { |
6030 | struct nfs4_exception exception = { }; | |
6031 | int err; | |
6032 | do { | |
a5250def WAA |
6033 | err = -NFS4ERR_WRONGSEC; |
6034 | ||
6035 | /* try to use integrity protection with machine cred */ | |
6036 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6037 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6038 | ||
6039 | /* | |
6040 | * if unable to use integrity protection, or SECINFO with | |
6041 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6042 | * disallowed by spec, but exists in deployed servers) use | |
6043 | * the current filesystem's rpc_client and the user cred. | |
6044 | */ | |
6045 | if (err == -NFS4ERR_WRONGSEC) | |
6046 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6047 | ||
078ea3df TM |
6048 | trace_nfs4_secinfo(dir, name, err); |
6049 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6050 | &exception); |
6051 | } while (exception.retry); | |
6052 | return err; | |
6053 | } | |
6054 | ||
557134a3 | 6055 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6056 | /* |
6057 | * Check the exchange flags returned by the server for invalid flags, having | |
6058 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6059 | * DS flags set. | |
6060 | */ | |
6061 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6062 | { | |
6063 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6064 | goto out_inval; | |
6065 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6066 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6067 | goto out_inval; | |
6068 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6069 | goto out_inval; | |
6070 | return NFS_OK; | |
6071 | out_inval: | |
6072 | return -NFS4ERR_INVAL; | |
6073 | } | |
6074 | ||
78fe0f41 | 6075 | static bool |
79d4e1f0 CL |
6076 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6077 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6078 | { |
6079 | if (a->server_scope_sz == b->server_scope_sz && | |
6080 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6081 | return true; | |
6082 | ||
6083 | return false; | |
6084 | } | |
6085 | ||
7c44f1ae WAA |
6086 | /* |
6087 | * nfs4_proc_bind_conn_to_session() | |
6088 | * | |
6089 | * The 4.1 client currently uses the same TCP connection for the | |
6090 | * fore and backchannel. | |
6091 | */ | |
2cf047c9 | 6092 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6093 | { |
6094 | int status; | |
6095 | struct nfs41_bind_conn_to_session_res res; | |
6096 | struct rpc_message msg = { | |
6097 | .rpc_proc = | |
6098 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6099 | .rpc_argp = clp, | |
6100 | .rpc_resp = &res, | |
2cf047c9 | 6101 | .rpc_cred = cred, |
7c44f1ae WAA |
6102 | }; |
6103 | ||
6104 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6105 | |
6106 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6107 | if (unlikely(res.session == NULL)) { | |
6108 | status = -ENOMEM; | |
6109 | goto out; | |
6110 | } | |
6111 | ||
6112 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6113 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6114 | if (status == 0) { |
6115 | if (memcmp(res.session->sess_id.data, | |
6116 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6117 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6118 | status = -EIO; | |
6119 | goto out_session; | |
6120 | } | |
6121 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6122 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6123 | __func__); | |
6124 | status = -EIO; | |
6125 | goto out_session; | |
6126 | } | |
6127 | if (res.use_conn_in_rdma_mode) { | |
6128 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6129 | __func__); | |
6130 | status = -EIO; | |
6131 | goto out_session; | |
6132 | } | |
6133 | } | |
6134 | out_session: | |
6135 | kfree(res.session); | |
6136 | out: | |
6137 | dprintk("<-- %s status= %d\n", __func__, status); | |
6138 | return status; | |
6139 | } | |
6140 | ||
99fe60d0 | 6141 | /* |
fa940720 WAA |
6142 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6143 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6144 | */ |
6145 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6146 | .how = SP4_MACH_CRED, | |
6147 | .enforce.u.words = { | |
6148 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6149 | 1 << (OP_EXCHANGE_ID - 32) | | |
6150 | 1 << (OP_CREATE_SESSION - 32) | | |
6151 | 1 << (OP_DESTROY_SESSION - 32) | | |
6152 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6153 | }, |
6154 | .allow.u.words = { | |
6155 | [0] = 1 << (OP_CLOSE) | | |
8b5bee2e WAA |
6156 | 1 << (OP_LOCKU), |
6157 | [1] = 1 << (OP_SECINFO - 32) | | |
3787d506 WAA |
6158 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6159 | 1 << (OP_TEST_STATEID - 32) | | |
6160 | 1 << (OP_FREE_STATEID - 32) | |
2031cd1a WAA |
6161 | } |
6162 | }; | |
6163 | ||
6164 | /* | |
6165 | * Select the state protection mode for client `clp' given the server results | |
6166 | * from exchange_id in `sp'. | |
99fe60d0 | 6167 | * |
2031cd1a WAA |
6168 | * Returns 0 on success, negative errno otherwise. |
6169 | */ | |
6170 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6171 | struct nfs41_state_protection *sp) | |
6172 | { | |
6173 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6174 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6175 | 1 << (OP_EXCHANGE_ID - 32) | | |
6176 | 1 << (OP_CREATE_SESSION - 32) | | |
6177 | 1 << (OP_DESTROY_SESSION - 32) | | |
6178 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6179 | }; | |
6180 | unsigned int i; | |
6181 | ||
6182 | if (sp->how == SP4_MACH_CRED) { | |
6183 | /* Print state protect result */ | |
6184 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6185 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6186 | if (test_bit(i, sp->enforce.u.longs)) | |
6187 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6188 | if (test_bit(i, sp->allow.u.longs)) | |
6189 | dfprintk(MOUNT, " allow op %d\n", i); | |
6190 | } | |
6191 | ||
6192 | /* make sure nothing is on enforce list that isn't supported */ | |
6193 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6194 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6195 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6196 | return -EINVAL; | |
6197 | } | |
6198 | } | |
6199 | ||
6200 | /* | |
6201 | * Minimal mode - state operations are allowed to use machine | |
6202 | * credential. Note this already happens by default, so the | |
6203 | * client doesn't have to do anything more than the negotiation. | |
6204 | * | |
6205 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6206 | * we're already using the machine cred for exchange_id | |
6207 | * and will never use a different cred. | |
6208 | */ | |
6209 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6210 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6211 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6212 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6213 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6214 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6215 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6216 | } else { | |
6217 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6218 | return -EINVAL; | |
6219 | } | |
fa940720 WAA |
6220 | |
6221 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6222 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6223 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6224 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6225 | } | |
8b5bee2e WAA |
6226 | |
6227 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6228 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6229 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6230 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6231 | } | |
3787d506 WAA |
6232 | |
6233 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6234 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6235 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6236 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6237 | } | |
8c21c62c WAA |
6238 | |
6239 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6240 | dfprintk(MOUNT, " write mode enabled\n"); | |
6241 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6242 | } | |
6243 | ||
6244 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6245 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6246 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6247 | } | |
2031cd1a WAA |
6248 | } |
6249 | ||
6250 | return 0; | |
6251 | } | |
6252 | ||
6253 | /* | |
6254 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6255 | * |
2031cd1a | 6256 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6257 | */ |
2031cd1a WAA |
6258 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6259 | u32 sp4_how) | |
99fe60d0 BH |
6260 | { |
6261 | nfs4_verifier verifier; | |
6262 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6263 | .verifier = &verifier, |
99fe60d0 | 6264 | .client = clp, |
4f0b429d TM |
6265 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
6266 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
99fe60d0 BH |
6267 | }; |
6268 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6269 | 0 |
99fe60d0 BH |
6270 | }; |
6271 | int status; | |
6272 | struct rpc_message msg = { | |
6273 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6274 | .rpc_argp = &args, | |
6275 | .rpc_resp = &res, | |
6276 | .rpc_cred = cred, | |
6277 | }; | |
99fe60d0 | 6278 | |
f092075d | 6279 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6280 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6281 | sizeof(args.id)); | |
6bbb4ae8 CL |
6282 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6283 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6284 | args.id_len, args.id); | |
99fe60d0 | 6285 | |
acdeb69d | 6286 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6287 | GFP_NOFS); |
acdeb69d | 6288 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6289 | status = -ENOMEM; |
6290 | goto out; | |
6291 | } | |
78fe0f41 | 6292 | |
79d4e1f0 | 6293 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6294 | GFP_NOFS); |
177313f1 | 6295 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6296 | status = -ENOMEM; |
acdeb69d | 6297 | goto out_server_owner; |
abe9a6d5 | 6298 | } |
78fe0f41 | 6299 | |
bbafffd2 | 6300 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6301 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6302 | status = -ENOMEM; |
6303 | goto out_server_scope; | |
6304 | } | |
6305 | ||
2031cd1a WAA |
6306 | switch (sp4_how) { |
6307 | case SP4_NONE: | |
6308 | args.state_protect.how = SP4_NONE; | |
6309 | break; | |
6310 | ||
6311 | case SP4_MACH_CRED: | |
6312 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6313 | break; | |
6314 | ||
6315 | default: | |
6316 | /* unsupported! */ | |
6317 | WARN_ON_ONCE(1); | |
6318 | status = -EINVAL; | |
6319 | goto out_server_scope; | |
6320 | } | |
6321 | ||
1bd714f2 | 6322 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6323 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6324 | if (status == 0) |
32b01310 | 6325 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6326 | |
2031cd1a WAA |
6327 | if (status == 0) |
6328 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6329 | ||
acdeb69d | 6330 | if (status == 0) { |
32b01310 TM |
6331 | clp->cl_clientid = res.clientid; |
6332 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6333 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6334 | clp->cl_seqid = res.seqid; | |
6335 | ||
acdeb69d CL |
6336 | kfree(clp->cl_serverowner); |
6337 | clp->cl_serverowner = res.server_owner; | |
6338 | res.server_owner = NULL; | |
78fe0f41 | 6339 | |
7d2ed9ac | 6340 | /* use the most recent implementation id */ |
59155546 CL |
6341 | kfree(clp->cl_implid); |
6342 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6343 | |
177313f1 | 6344 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6345 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6346 | res.server_scope)) { |
6347 | dprintk("%s: server_scope mismatch detected\n", | |
6348 | __func__); | |
6349 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6350 | kfree(clp->cl_serverscope); |
6351 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6352 | } |
6353 | ||
177313f1 | 6354 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6355 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6356 | goto out; |
6357 | } | |
32b01310 TM |
6358 | } else |
6359 | kfree(res.impl_id); | |
7d2ed9ac | 6360 | |
acdeb69d CL |
6361 | out_server_owner: |
6362 | kfree(res.server_owner); | |
7d2ed9ac | 6363 | out_server_scope: |
abe9a6d5 WAA |
6364 | kfree(res.server_scope); |
6365 | out: | |
177313f1 | 6366 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6367 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6368 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6369 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6370 | clp->cl_implid->date.seconds, |
6371 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6372 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6373 | return status; |
6374 | } | |
6375 | ||
2031cd1a WAA |
6376 | /* |
6377 | * nfs4_proc_exchange_id() | |
6378 | * | |
6379 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6380 | * | |
6381 | * Since the clientid has expired, all compounds using sessions | |
6382 | * associated with the stale clientid will be returning | |
6383 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6384 | * be in some phase of session reset. | |
6385 | * | |
6386 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
6387 | */ | |
6388 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
6389 | { | |
6390 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
6391 | int status; | |
6392 | ||
6393 | /* try SP4_MACH_CRED if krb5i/p */ | |
6394 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
6395 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
6396 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
6397 | if (!status) | |
6398 | return 0; | |
6399 | } | |
6400 | ||
6401 | /* try SP4_NONE */ | |
6402 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
6403 | } | |
6404 | ||
66245539 TM |
6405 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6406 | struct rpc_cred *cred) | |
6407 | { | |
6408 | struct rpc_message msg = { | |
6409 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6410 | .rpc_argp = clp, | |
6411 | .rpc_cred = cred, | |
6412 | }; | |
6413 | int status; | |
6414 | ||
6415 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6416 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6417 | if (status) |
02c67525 | 6418 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6419 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6420 | return status; | |
6421 | } | |
6422 | ||
6423 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6424 | struct rpc_cred *cred) | |
6425 | { | |
6426 | unsigned int loop; | |
6427 | int ret; | |
6428 | ||
6429 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6430 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6431 | switch (ret) { | |
6432 | case -NFS4ERR_DELAY: | |
6433 | case -NFS4ERR_CLIENTID_BUSY: | |
6434 | ssleep(1); | |
6435 | break; | |
6436 | default: | |
6437 | return ret; | |
6438 | } | |
6439 | } | |
6440 | return 0; | |
6441 | } | |
6442 | ||
6443 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6444 | { | |
6445 | struct rpc_cred *cred; | |
6446 | int ret = 0; | |
6447 | ||
6448 | if (clp->cl_mvops->minor_version < 1) | |
6449 | goto out; | |
6450 | if (clp->cl_exchange_flags == 0) | |
6451 | goto out; | |
05f4c350 CL |
6452 | if (clp->cl_preserve_clid) |
6453 | goto out; | |
73d8bde5 | 6454 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6455 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6456 | if (cred) | |
6457 | put_rpccred(cred); | |
6458 | switch (ret) { | |
6459 | case 0: | |
6460 | case -NFS4ERR_STALE_CLIENTID: | |
6461 | clp->cl_exchange_flags = 0; | |
6462 | } | |
6463 | out: | |
6464 | return ret; | |
6465 | } | |
6466 | ||
2050f0cc AA |
6467 | struct nfs4_get_lease_time_data { |
6468 | struct nfs4_get_lease_time_args *args; | |
6469 | struct nfs4_get_lease_time_res *res; | |
6470 | struct nfs_client *clp; | |
6471 | }; | |
6472 | ||
6473 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6474 | void *calldata) | |
6475 | { | |
2050f0cc AA |
6476 | struct nfs4_get_lease_time_data *data = |
6477 | (struct nfs4_get_lease_time_data *)calldata; | |
6478 | ||
6479 | dprintk("--> %s\n", __func__); | |
6480 | /* just setup sequence, do not trigger session recovery | |
6481 | since we're invoked within one */ | |
d9afbd1b TM |
6482 | nfs41_setup_sequence(data->clp->cl_session, |
6483 | &data->args->la_seq_args, | |
6484 | &data->res->lr_seq_res, | |
6485 | task); | |
2050f0cc AA |
6486 | dprintk("<-- %s\n", __func__); |
6487 | } | |
6488 | ||
6489 | /* | |
6490 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6491 | * from sequence operation or clientid errors. | |
6492 | */ | |
6493 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6494 | { | |
6495 | struct nfs4_get_lease_time_data *data = | |
6496 | (struct nfs4_get_lease_time_data *)calldata; | |
6497 | ||
6498 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6499 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6500 | return; | |
2050f0cc AA |
6501 | switch (task->tk_status) { |
6502 | case -NFS4ERR_DELAY: | |
6503 | case -NFS4ERR_GRACE: | |
6504 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6505 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6506 | task->tk_status = 0; | |
a8a4ae3a AA |
6507 | /* fall through */ |
6508 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6509 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6510 | return; |
6511 | } | |
2050f0cc AA |
6512 | dprintk("<-- %s\n", __func__); |
6513 | } | |
6514 | ||
17280175 | 6515 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6516 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6517 | .rpc_call_done = nfs4_get_lease_time_done, | |
6518 | }; | |
6519 | ||
6520 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6521 | { | |
6522 | struct rpc_task *task; | |
6523 | struct nfs4_get_lease_time_args args; | |
6524 | struct nfs4_get_lease_time_res res = { | |
6525 | .lr_fsinfo = fsinfo, | |
6526 | }; | |
6527 | struct nfs4_get_lease_time_data data = { | |
6528 | .args = &args, | |
6529 | .res = &res, | |
6530 | .clp = clp, | |
6531 | }; | |
6532 | struct rpc_message msg = { | |
6533 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6534 | .rpc_argp = &args, | |
6535 | .rpc_resp = &res, | |
6536 | }; | |
6537 | struct rpc_task_setup task_setup = { | |
6538 | .rpc_client = clp->cl_rpcclient, | |
6539 | .rpc_message = &msg, | |
6540 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6541 | .callback_data = &data, |
6542 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6543 | }; |
6544 | int status; | |
6545 | ||
a9c92d6b | 6546 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6547 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6548 | dprintk("--> %s\n", __func__); |
6549 | task = rpc_run_task(&task_setup); | |
6550 | ||
6551 | if (IS_ERR(task)) | |
6552 | status = PTR_ERR(task); | |
6553 | else { | |
6554 | status = task->tk_status; | |
6555 | rpc_put_task(task); | |
6556 | } | |
6557 | dprintk("<-- %s return %d\n", __func__, status); | |
6558 | ||
6559 | return status; | |
6560 | } | |
6561 | ||
fc931582 AA |
6562 | /* |
6563 | * Initialize the values to be used by the client in CREATE_SESSION | |
6564 | * If nfs4_init_session set the fore channel request and response sizes, | |
6565 | * use them. | |
6566 | * | |
6567 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6568 | * always set csa_cachethis to FALSE because the current implementation | |
6569 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6570 | */ | |
6571 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6572 | { | |
18aad3d5 AA |
6573 | unsigned int max_rqst_sz, max_resp_sz; |
6574 | ||
6575 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6576 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6577 | |
fc931582 | 6578 | /* Fore channel attributes */ |
18aad3d5 AA |
6579 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6580 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6581 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6582 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6583 | |
6584 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6585 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6586 | __func__, |
6587 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6588 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6589 | |
6590 | /* Back channel attributes */ | |
fc931582 AA |
6591 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6592 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6593 | args->bc_attrs.max_resp_sz_cached = 0; | |
6594 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6595 | args->bc_attrs.max_reqs = 1; | |
6596 | ||
6597 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6598 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6599 | __func__, | |
6600 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6601 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6602 | args->bc_attrs.max_reqs); | |
6603 | } | |
6604 | ||
43c2e885 | 6605 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6606 | { |
43c2e885 BF |
6607 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6608 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6609 | ||
43c2e885 BF |
6610 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6611 | return -EINVAL; | |
6612 | /* | |
6613 | * Our requested max_ops is the minimum we need; we're not | |
6614 | * prepared to break up compounds into smaller pieces than that. | |
6615 | * So, no point even trying to continue if the server won't | |
6616 | * cooperate: | |
6617 | */ | |
6618 | if (rcvd->max_ops < sent->max_ops) | |
6619 | return -EINVAL; | |
6620 | if (rcvd->max_reqs == 0) | |
6621 | return -EINVAL; | |
b4b9a0c1 VG |
6622 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6623 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 6624 | return 0; |
8d35301d AA |
6625 | } |
6626 | ||
43c2e885 BF |
6627 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
6628 | { | |
6629 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
6630 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 6631 | |
43c2e885 BF |
6632 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
6633 | return -EINVAL; | |
6634 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
6635 | return -EINVAL; | |
6636 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
6637 | return -EINVAL; | |
6638 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 6639 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 6640 | return -EINVAL; |
b4b9a0c1 | 6641 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
6642 | return -EINVAL; |
6643 | return 0; | |
6644 | } | |
8d35301d | 6645 | |
8d35301d AA |
6646 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6647 | struct nfs4_session *session) | |
6648 | { | |
43c2e885 | 6649 | int ret; |
8d35301d | 6650 | |
43c2e885 BF |
6651 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6652 | if (ret) | |
6653 | return ret; | |
6654 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6655 | } |
6656 | ||
848f5bda TM |
6657 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6658 | struct rpc_cred *cred) | |
fc931582 AA |
6659 | { |
6660 | struct nfs4_session *session = clp->cl_session; | |
6661 | struct nfs41_create_session_args args = { | |
6662 | .client = clp, | |
6663 | .cb_program = NFS4_CALLBACK, | |
6664 | }; | |
6665 | struct nfs41_create_session_res res = { | |
6666 | .client = clp, | |
6667 | }; | |
6668 | struct rpc_message msg = { | |
6669 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6670 | .rpc_argp = &args, | |
6671 | .rpc_resp = &res, | |
848f5bda | 6672 | .rpc_cred = cred, |
fc931582 AA |
6673 | }; |
6674 | int status; | |
6675 | ||
6676 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6677 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6678 | |
1bd714f2 | 6679 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6680 | trace_nfs4_create_session(clp, status); |
fc931582 | 6681 | |
43095d39 | 6682 | if (!status) { |
8d35301d AA |
6683 | /* Verify the session's negotiated channel_attrs values */ |
6684 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6685 | /* Increment the clientid slot sequence id */ |
6686 | clp->cl_seqid++; | |
6687 | } | |
6688 | ||
6689 | return status; | |
6690 | } | |
6691 | ||
6692 | /* | |
6693 | * Issues a CREATE_SESSION operation to the server. | |
6694 | * It is the responsibility of the caller to verify the session is | |
6695 | * expired before calling this routine. | |
6696 | */ | |
848f5bda | 6697 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6698 | { |
6699 | int status; | |
6700 | unsigned *ptr; | |
fc931582 AA |
6701 | struct nfs4_session *session = clp->cl_session; |
6702 | ||
6703 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6704 | ||
848f5bda | 6705 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6706 | if (status) |
6707 | goto out; | |
6708 | ||
aacd5537 AA |
6709 | /* Init or reset the session slot tables */ |
6710 | status = nfs4_setup_session_slot_tables(session); | |
6711 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6712 | if (status) |
6713 | goto out; | |
6714 | ||
6715 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6716 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6717 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6718 | out: |
6719 | dprintk("<-- %s\n", __func__); | |
6720 | return status; | |
6721 | } | |
6722 | ||
0f3e66c6 AA |
6723 | /* |
6724 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6725 | * The caller must serialize access to this routine. | |
6726 | */ | |
848f5bda TM |
6727 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6728 | struct rpc_cred *cred) | |
0f3e66c6 | 6729 | { |
848f5bda TM |
6730 | struct rpc_message msg = { |
6731 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6732 | .rpc_argp = session, | |
6733 | .rpc_cred = cred, | |
6734 | }; | |
0f3e66c6 | 6735 | int status = 0; |
0f3e66c6 AA |
6736 | |
6737 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6738 | ||
6739 | /* session is still being setup */ | |
6740 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6741 | return status; | |
6742 | ||
1bd714f2 | 6743 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6744 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
6745 | |
6746 | if (status) | |
08106ac7 | 6747 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6748 | "Session has been destroyed regardless...\n", status); |
6749 | ||
6750 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6751 | return status; | |
6752 | } | |
6753 | ||
fc01cea9 AA |
6754 | /* |
6755 | * Renew the cl_session lease. | |
6756 | */ | |
d5f8d3fe TM |
6757 | struct nfs4_sequence_data { |
6758 | struct nfs_client *clp; | |
6759 | struct nfs4_sequence_args args; | |
6760 | struct nfs4_sequence_res res; | |
6761 | }; | |
6762 | ||
dc96aef9 AB |
6763 | static void nfs41_sequence_release(void *data) |
6764 | { | |
d5f8d3fe TM |
6765 | struct nfs4_sequence_data *calldata = data; |
6766 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6767 | |
7135840f AB |
6768 | if (atomic_read(&clp->cl_count) > 1) |
6769 | nfs4_schedule_state_renewal(clp); | |
6770 | nfs_put_client(clp); | |
d5f8d3fe | 6771 | kfree(calldata); |
dc96aef9 AB |
6772 | } |
6773 | ||
aa5190d0 TM |
6774 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6775 | { | |
6776 | switch(task->tk_status) { | |
6777 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6778 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6779 | return -EAGAIN; | |
6780 | default: | |
0400a6b0 | 6781 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6782 | } |
6783 | return 0; | |
6784 | } | |
6785 | ||
dc96aef9 | 6786 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6787 | { |
d5f8d3fe TM |
6788 | struct nfs4_sequence_data *calldata = data; |
6789 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6790 | |
14516c3a TM |
6791 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6792 | return; | |
fc01cea9 | 6793 | |
c6d01c6f | 6794 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
6795 | if (task->tk_status < 0) { |
6796 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6797 | if (atomic_read(&clp->cl_count) == 1) |
6798 | goto out; | |
fc01cea9 | 6799 | |
aa5190d0 TM |
6800 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6801 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6802 | return; |
6803 | } | |
6804 | } | |
fc01cea9 | 6805 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6806 | out: |
fc01cea9 AA |
6807 | dprintk("<-- %s\n", __func__); |
6808 | } | |
6809 | ||
6810 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6811 | { | |
d5f8d3fe TM |
6812 | struct nfs4_sequence_data *calldata = data; |
6813 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6814 | struct nfs4_sequence_args *args; |
6815 | struct nfs4_sequence_res *res; | |
6816 | ||
fc01cea9 AA |
6817 | args = task->tk_msg.rpc_argp; |
6818 | res = task->tk_msg.rpc_resp; | |
6819 | ||
d9afbd1b | 6820 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6821 | } |
6822 | ||
6823 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6824 | .rpc_call_done = nfs41_sequence_call_done, | |
6825 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6826 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6827 | }; |
6828 | ||
8fe72bac TM |
6829 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6830 | struct rpc_cred *cred, | |
6831 | bool is_privileged) | |
fc01cea9 | 6832 | { |
d5f8d3fe | 6833 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6834 | struct rpc_message msg = { |
6835 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6836 | .rpc_cred = cred, | |
6837 | }; | |
71ac6da9 TM |
6838 | struct rpc_task_setup task_setup_data = { |
6839 | .rpc_client = clp->cl_rpcclient, | |
6840 | .rpc_message = &msg, | |
8fe72bac | 6841 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6842 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6843 | }; |
fc01cea9 | 6844 | |
7135840f | 6845 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6846 | return ERR_PTR(-EIO); |
dfb4f309 | 6847 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6848 | if (calldata == NULL) { |
7135840f | 6849 | nfs_put_client(clp); |
71ac6da9 | 6850 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6851 | } |
a9c92d6b | 6852 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6853 | if (is_privileged) |
6854 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6855 | msg.rpc_argp = &calldata->args; |
6856 | msg.rpc_resp = &calldata->res; | |
6857 | calldata->clp = clp; | |
71ac6da9 | 6858 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6859 | |
71ac6da9 TM |
6860 | return rpc_run_task(&task_setup_data); |
6861 | } | |
6862 | ||
2f60ea6b | 6863 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6864 | { |
6865 | struct rpc_task *task; | |
6866 | int ret = 0; | |
6867 | ||
2f60ea6b TM |
6868 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6869 | return 0; | |
8fe72bac | 6870 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6871 | if (IS_ERR(task)) |
6872 | ret = PTR_ERR(task); | |
6873 | else | |
bf294b41 | 6874 | rpc_put_task_async(task); |
71ac6da9 TM |
6875 | dprintk("<-- %s status=%d\n", __func__, ret); |
6876 | return ret; | |
6877 | } | |
6878 | ||
6879 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6880 | { | |
6881 | struct rpc_task *task; | |
6882 | int ret; | |
6883 | ||
8fe72bac | 6884 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6885 | if (IS_ERR(task)) { |
6886 | ret = PTR_ERR(task); | |
6887 | goto out; | |
6888 | } | |
6889 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6890 | if (!ret) { |
6891 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6892 | ||
6893 | if (task->tk_status == 0) | |
6894 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6895 | ret = task->tk_status; |
b4410c2f | 6896 | } |
71ac6da9 TM |
6897 | rpc_put_task(task); |
6898 | out: | |
6899 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6900 | return ret; | |
fc01cea9 AA |
6901 | } |
6902 | ||
fce5c838 RL |
6903 | struct nfs4_reclaim_complete_data { |
6904 | struct nfs_client *clp; | |
6905 | struct nfs41_reclaim_complete_args arg; | |
6906 | struct nfs41_reclaim_complete_res res; | |
6907 | }; | |
6908 | ||
6909 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6910 | { | |
6911 | struct nfs4_reclaim_complete_data *calldata = data; | |
6912 | ||
d9afbd1b TM |
6913 | nfs41_setup_sequence(calldata->clp->cl_session, |
6914 | &calldata->arg.seq_args, | |
6915 | &calldata->res.seq_res, | |
6916 | task); | |
fce5c838 RL |
6917 | } |
6918 | ||
aa5190d0 TM |
6919 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6920 | { | |
6921 | switch(task->tk_status) { | |
6922 | case 0: | |
6923 | case -NFS4ERR_COMPLETE_ALREADY: | |
6924 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6925 | break; | |
6926 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6927 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6928 | /* fall through */ |
6929 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6930 | return -EAGAIN; |
6931 | default: | |
0400a6b0 | 6932 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6933 | } |
6934 | return 0; | |
6935 | } | |
6936 | ||
fce5c838 RL |
6937 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6938 | { | |
6939 | struct nfs4_reclaim_complete_data *calldata = data; | |
6940 | struct nfs_client *clp = calldata->clp; | |
6941 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6942 | ||
6943 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6944 | if (!nfs41_sequence_done(task, res)) |
6945 | return; | |
fce5c838 | 6946 | |
c6d01c6f | 6947 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
6948 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6949 | rpc_restart_call_prepare(task); | |
6950 | return; | |
6951 | } | |
fce5c838 RL |
6952 | dprintk("<-- %s\n", __func__); |
6953 | } | |
6954 | ||
6955 | static void nfs4_free_reclaim_complete_data(void *data) | |
6956 | { | |
6957 | struct nfs4_reclaim_complete_data *calldata = data; | |
6958 | ||
6959 | kfree(calldata); | |
6960 | } | |
6961 | ||
6962 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6963 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6964 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6965 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6966 | }; | |
6967 | ||
6968 | /* | |
6969 | * Issue a global reclaim complete. | |
6970 | */ | |
965e9c23 TM |
6971 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
6972 | struct rpc_cred *cred) | |
fce5c838 RL |
6973 | { |
6974 | struct nfs4_reclaim_complete_data *calldata; | |
6975 | struct rpc_task *task; | |
6976 | struct rpc_message msg = { | |
6977 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 6978 | .rpc_cred = cred, |
fce5c838 RL |
6979 | }; |
6980 | struct rpc_task_setup task_setup_data = { | |
6981 | .rpc_client = clp->cl_rpcclient, | |
6982 | .rpc_message = &msg, | |
6983 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6984 | .flags = RPC_TASK_ASYNC, | |
6985 | }; | |
6986 | int status = -ENOMEM; | |
6987 | ||
6988 | dprintk("--> %s\n", __func__); | |
8535b2be | 6989 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6990 | if (calldata == NULL) |
6991 | goto out; | |
6992 | calldata->clp = clp; | |
6993 | calldata->arg.one_fs = 0; | |
fce5c838 | 6994 | |
a9c92d6b | 6995 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6996 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6997 | msg.rpc_argp = &calldata->arg; |
6998 | msg.rpc_resp = &calldata->res; | |
6999 | task_setup_data.callback_data = calldata; | |
7000 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7001 | if (IS_ERR(task)) { |
fce5c838 | 7002 | status = PTR_ERR(task); |
acf82b85 DC |
7003 | goto out; |
7004 | } | |
c34c32ea AA |
7005 | status = nfs4_wait_for_completion_rpc_task(task); |
7006 | if (status == 0) | |
7007 | status = task->tk_status; | |
fce5c838 | 7008 | rpc_put_task(task); |
acf82b85 | 7009 | return 0; |
fce5c838 RL |
7010 | out: |
7011 | dprintk("<-- %s status=%d\n", __func__, status); | |
7012 | return status; | |
7013 | } | |
b1f69b75 AA |
7014 | |
7015 | static void | |
7016 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7017 | { | |
7018 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7019 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7020 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7021 | |
7022 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7023 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7024 | * right now covering the LAYOUTGET we are about to send. | |
7025 | * However, that is not so catastrophic, and there seems | |
7026 | * to be no way to prevent it completely. | |
7027 | */ | |
6ba7db34 | 7028 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7029 | &lgp->res.seq_res, task)) |
b1f69b75 | 7030 | return; |
cf7d63f1 FI |
7031 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7032 | NFS_I(lgp->args.inode)->layout, | |
7033 | lgp->args.ctx->state)) { | |
7034 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7035 | } |
b1f69b75 AA |
7036 | } |
7037 | ||
7038 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7039 | { | |
7040 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7041 | struct inode *inode = lgp->args.inode; |
7042 | struct nfs_server *server = NFS_SERVER(inode); | |
7043 | struct pnfs_layout_hdr *lo; | |
7044 | struct nfs4_state *state = NULL; | |
30005121 | 7045 | unsigned long timeo, giveup; |
b1f69b75 AA |
7046 | |
7047 | dprintk("--> %s\n", __func__); | |
7048 | ||
6ba7db34 | 7049 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7050 | goto out; |
b1f69b75 AA |
7051 | |
7052 | switch (task->tk_status) { | |
7053 | case 0: | |
ee314c2a | 7054 | goto out; |
b1f69b75 AA |
7055 | case -NFS4ERR_LAYOUTTRYLATER: |
7056 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
7057 | timeo = rpc_get_timeout(task->tk_client); |
7058 | giveup = lgp->args.timestamp + timeo; | |
7059 | if (time_after(giveup, jiffies)) | |
7060 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
7061 | break; |
7062 | case -NFS4ERR_EXPIRED: | |
7063 | case -NFS4ERR_BAD_STATEID: | |
7064 | spin_lock(&inode->i_lock); | |
7065 | lo = NFS_I(inode)->layout; | |
7066 | if (!lo || list_empty(&lo->plh_segs)) { | |
7067 | spin_unlock(&inode->i_lock); | |
7068 | /* If the open stateid was bad, then recover it. */ | |
7069 | state = lgp->args.ctx->state; | |
7070 | } else { | |
7071 | LIST_HEAD(head); | |
7072 | ||
7073 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
7074 | spin_unlock(&inode->i_lock); | |
7075 | /* Mark the bad layout state as invalid, then | |
7076 | * retry using the open stateid. */ | |
7077 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
7078 | } |
7079 | } | |
ee314c2a TM |
7080 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
7081 | rpc_restart_call_prepare(task); | |
7082 | out: | |
b1f69b75 AA |
7083 | dprintk("<-- %s\n", __func__); |
7084 | } | |
7085 | ||
8554116e IK |
7086 | static size_t max_response_pages(struct nfs_server *server) |
7087 | { | |
7088 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7089 | return nfs_page_array_len(0, max_resp_sz); | |
7090 | } | |
7091 | ||
7092 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7093 | { | |
7094 | int i; | |
7095 | ||
7096 | if (!pages) | |
7097 | return; | |
7098 | ||
7099 | for (i = 0; i < size; i++) { | |
7100 | if (!pages[i]) | |
7101 | break; | |
7102 | __free_page(pages[i]); | |
7103 | } | |
7104 | kfree(pages); | |
7105 | } | |
7106 | ||
7107 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7108 | { | |
7109 | struct page **pages; | |
7110 | int i; | |
7111 | ||
7112 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7113 | if (!pages) { | |
7114 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7115 | return NULL; | |
7116 | } | |
7117 | ||
7118 | for (i = 0; i < size; i++) { | |
7119 | pages[i] = alloc_page(gfp_flags); | |
7120 | if (!pages[i]) { | |
7121 | dprintk("%s: failed to allocate page\n", __func__); | |
7122 | nfs4_free_pages(pages, size); | |
7123 | return NULL; | |
7124 | } | |
7125 | } | |
7126 | ||
7127 | return pages; | |
7128 | } | |
7129 | ||
b1f69b75 AA |
7130 | static void nfs4_layoutget_release(void *calldata) |
7131 | { | |
7132 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7133 | struct inode *inode = lgp->args.inode; |
7134 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7135 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7136 | |
7137 | dprintk("--> %s\n", __func__); | |
8554116e | 7138 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7139 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7140 | put_nfs_open_context(lgp->args.ctx); |
7141 | kfree(calldata); | |
7142 | dprintk("<-- %s\n", __func__); | |
7143 | } | |
7144 | ||
7145 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7146 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7147 | .rpc_call_done = nfs4_layoutget_done, | |
7148 | .rpc_release = nfs4_layoutget_release, | |
7149 | }; | |
7150 | ||
a0b0a6e3 TM |
7151 | struct pnfs_layout_segment * |
7152 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7153 | { |
a47970ff WAA |
7154 | struct inode *inode = lgp->args.inode; |
7155 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7156 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7157 | struct rpc_task *task; |
7158 | struct rpc_message msg = { | |
7159 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7160 | .rpc_argp = &lgp->args, | |
7161 | .rpc_resp = &lgp->res, | |
6ab59344 | 7162 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7163 | }; |
7164 | struct rpc_task_setup task_setup_data = { | |
7165 | .rpc_client = server->client, | |
7166 | .rpc_message = &msg, | |
7167 | .callback_ops = &nfs4_layoutget_call_ops, | |
7168 | .callback_data = lgp, | |
7169 | .flags = RPC_TASK_ASYNC, | |
7170 | }; | |
a0b0a6e3 | 7171 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7172 | int status = 0; |
7173 | ||
7174 | dprintk("--> %s\n", __func__); | |
7175 | ||
8554116e IK |
7176 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7177 | if (!lgp->args.layout.pages) { | |
7178 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7179 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7180 | } |
7181 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7182 | lgp->args.timestamp = jiffies; |
8554116e | 7183 | |
35124a09 | 7184 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7185 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7186 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
7187 | |
7188 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
7189 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7190 | ||
b1f69b75 AA |
7191 | task = rpc_run_task(&task_setup_data); |
7192 | if (IS_ERR(task)) | |
a0b0a6e3 | 7193 | return ERR_CAST(task); |
b1f69b75 | 7194 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7195 | if (status == 0) |
7196 | status = task->tk_status; | |
1037e6ea TM |
7197 | trace_nfs4_layoutget(lgp->args.ctx, |
7198 | &lgp->args.range, | |
7199 | &lgp->res.range, | |
7200 | status); | |
085b7a45 WAA |
7201 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7202 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7203 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7204 | rpc_put_task(task); |
7205 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7206 | if (status) |
7207 | return ERR_PTR(status); | |
7208 | return lseg; | |
b1f69b75 AA |
7209 | } |
7210 | ||
cbe82603 BH |
7211 | static void |
7212 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7213 | { | |
7214 | struct nfs4_layoutreturn *lrp = calldata; | |
7215 | ||
7216 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7217 | nfs41_setup_sequence(lrp->clp->cl_session, |
7218 | &lrp->args.seq_args, | |
7219 | &lrp->res.seq_res, | |
7220 | task); | |
cbe82603 BH |
7221 | } |
7222 | ||
7223 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7224 | { | |
7225 | struct nfs4_layoutreturn *lrp = calldata; | |
7226 | struct nfs_server *server; | |
7227 | ||
7228 | dprintk("--> %s\n", __func__); | |
7229 | ||
6ba7db34 | 7230 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7231 | return; |
7232 | ||
7233 | server = NFS_SERVER(lrp->args.inode); | |
7234 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 7235 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7236 | return; |
7237 | } | |
cbe82603 BH |
7238 | dprintk("<-- %s\n", __func__); |
7239 | } | |
7240 | ||
7241 | static void nfs4_layoutreturn_release(void *calldata) | |
7242 | { | |
7243 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7244 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7245 | |
7246 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7247 | spin_lock(&lo->plh_inode->i_lock); |
7248 | if (lrp->res.lrs_present) | |
7249 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7250 | lo->plh_block_lgets--; | |
7251 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7252 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7253 | kfree(calldata); |
7254 | dprintk("<-- %s\n", __func__); | |
7255 | } | |
7256 | ||
7257 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7258 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7259 | .rpc_call_done = nfs4_layoutreturn_done, | |
7260 | .rpc_release = nfs4_layoutreturn_release, | |
7261 | }; | |
7262 | ||
7263 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7264 | { | |
7265 | struct rpc_task *task; | |
7266 | struct rpc_message msg = { | |
7267 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7268 | .rpc_argp = &lrp->args, | |
7269 | .rpc_resp = &lrp->res, | |
9556000d | 7270 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7271 | }; |
7272 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7273 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7274 | .rpc_message = &msg, |
7275 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7276 | .callback_data = lrp, | |
7277 | }; | |
7278 | int status; | |
7279 | ||
7280 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7281 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7282 | task = rpc_run_task(&task_setup_data); |
7283 | if (IS_ERR(task)) | |
7284 | return PTR_ERR(task); | |
7285 | status = task->tk_status; | |
1037e6ea | 7286 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7287 | dprintk("<-- %s status=%d\n", __func__, status); |
7288 | rpc_put_task(task); | |
7289 | return status; | |
7290 | } | |
7291 | ||
7f11d8d3 AA |
7292 | /* |
7293 | * Retrieve the list of Data Server devices from the MDS. | |
7294 | */ | |
7295 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
7296 | const struct nfs_fh *fh, | |
7297 | struct pnfs_devicelist *devlist) | |
7298 | { | |
7299 | struct nfs4_getdevicelist_args args = { | |
7300 | .fh = fh, | |
7301 | .layoutclass = server->pnfs_curr_ld->id, | |
7302 | }; | |
7303 | struct nfs4_getdevicelist_res res = { | |
7304 | .devlist = devlist, | |
7305 | }; | |
7306 | struct rpc_message msg = { | |
7307 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
7308 | .rpc_argp = &args, | |
7309 | .rpc_resp = &res, | |
7310 | }; | |
7311 | int status; | |
7312 | ||
7313 | dprintk("--> %s\n", __func__); | |
7314 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
7315 | &res.seq_res, 0); | |
7316 | dprintk("<-- %s status=%d\n", __func__, status); | |
7317 | return status; | |
7318 | } | |
7319 | ||
7320 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
7321 | const struct nfs_fh *fh, | |
7322 | struct pnfs_devicelist *devlist) | |
7323 | { | |
7324 | struct nfs4_exception exception = { }; | |
7325 | int err; | |
7326 | ||
7327 | do { | |
7328 | err = nfs4_handle_exception(server, | |
7329 | _nfs4_getdevicelist(server, fh, devlist), | |
7330 | &exception); | |
7331 | } while (exception.retry); | |
7332 | ||
7333 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
7334 | err, devlist->num_devs); | |
7335 | ||
7336 | return err; | |
7337 | } | |
7338 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
7339 | ||
b1f69b75 | 7340 | static int |
cd5875fe TM |
7341 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7342 | struct pnfs_device *pdev, | |
7343 | struct rpc_cred *cred) | |
b1f69b75 AA |
7344 | { |
7345 | struct nfs4_getdeviceinfo_args args = { | |
7346 | .pdev = pdev, | |
7347 | }; | |
7348 | struct nfs4_getdeviceinfo_res res = { | |
7349 | .pdev = pdev, | |
7350 | }; | |
7351 | struct rpc_message msg = { | |
7352 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7353 | .rpc_argp = &args, | |
7354 | .rpc_resp = &res, | |
cd5875fe | 7355 | .rpc_cred = cred, |
b1f69b75 AA |
7356 | }; |
7357 | int status; | |
7358 | ||
7359 | dprintk("--> %s\n", __func__); | |
7c513058 | 7360 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7361 | dprintk("<-- %s status=%d\n", __func__, status); |
7362 | ||
7363 | return status; | |
7364 | } | |
7365 | ||
cd5875fe TM |
7366 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7367 | struct pnfs_device *pdev, | |
7368 | struct rpc_cred *cred) | |
b1f69b75 AA |
7369 | { |
7370 | struct nfs4_exception exception = { }; | |
7371 | int err; | |
7372 | ||
7373 | do { | |
7374 | err = nfs4_handle_exception(server, | |
cd5875fe | 7375 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7376 | &exception); |
7377 | } while (exception.retry); | |
7378 | return err; | |
7379 | } | |
7380 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7381 | ||
863a3c6c AA |
7382 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7383 | { | |
7384 | struct nfs4_layoutcommit_data *data = calldata; | |
7385 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7386 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7387 | |
d9afbd1b TM |
7388 | nfs41_setup_sequence(session, |
7389 | &data->args.seq_args, | |
7390 | &data->res.seq_res, | |
7391 | task); | |
863a3c6c AA |
7392 | } |
7393 | ||
7394 | static void | |
7395 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7396 | { | |
7397 | struct nfs4_layoutcommit_data *data = calldata; | |
7398 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7399 | ||
6ba7db34 | 7400 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7401 | return; |
7402 | ||
7403 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7404 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7405 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7406 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7407 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7408 | task->tk_status = 0; |
e59d27e0 TM |
7409 | break; |
7410 | case 0: | |
863a3c6c AA |
7411 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7412 | data->res.fattr); | |
e59d27e0 TM |
7413 | break; |
7414 | default: | |
7415 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7416 | rpc_restart_call_prepare(task); | |
7417 | return; | |
7418 | } | |
7419 | } | |
863a3c6c AA |
7420 | } |
7421 | ||
7422 | static void nfs4_layoutcommit_release(void *calldata) | |
7423 | { | |
7424 | struct nfs4_layoutcommit_data *data = calldata; | |
7425 | ||
db29c089 | 7426 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
7427 | put_rpccred(data->cred); |
7428 | kfree(data); | |
7429 | } | |
7430 | ||
7431 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7432 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7433 | .rpc_call_done = nfs4_layoutcommit_done, | |
7434 | .rpc_release = nfs4_layoutcommit_release, | |
7435 | }; | |
7436 | ||
7437 | int | |
ef311537 | 7438 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7439 | { |
7440 | struct rpc_message msg = { | |
7441 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7442 | .rpc_argp = &data->args, | |
7443 | .rpc_resp = &data->res, | |
7444 | .rpc_cred = data->cred, | |
7445 | }; | |
7446 | struct rpc_task_setup task_setup_data = { | |
7447 | .task = &data->task, | |
7448 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7449 | .rpc_message = &msg, | |
7450 | .callback_ops = &nfs4_layoutcommit_ops, | |
7451 | .callback_data = data, | |
7452 | .flags = RPC_TASK_ASYNC, | |
7453 | }; | |
7454 | struct rpc_task *task; | |
7455 | int status = 0; | |
7456 | ||
7457 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7458 | "lbw: %llu inode %lu\n", | |
7459 | data->task.tk_pid, sync, | |
7460 | data->args.lastbytewritten, | |
7461 | data->args.inode->i_ino); | |
7462 | ||
a9c92d6b | 7463 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7464 | task = rpc_run_task(&task_setup_data); |
7465 | if (IS_ERR(task)) | |
7466 | return PTR_ERR(task); | |
ef311537 | 7467 | if (sync == false) |
863a3c6c AA |
7468 | goto out; |
7469 | status = nfs4_wait_for_completion_rpc_task(task); | |
7470 | if (status != 0) | |
7471 | goto out; | |
7472 | status = task->tk_status; | |
1037e6ea | 7473 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7474 | out: |
7475 | dprintk("%s: status %d\n", __func__, status); | |
7476 | rpc_put_task(task); | |
7477 | return status; | |
7478 | } | |
fca78d6d | 7479 | |
97431204 AA |
7480 | /** |
7481 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7482 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7483 | */ | |
fca78d6d BS |
7484 | static int |
7485 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
7486 | struct nfs_fsinfo *info, |
7487 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
7488 | { |
7489 | struct nfs41_secinfo_no_name_args args = { | |
7490 | .style = SECINFO_STYLE_CURRENT_FH, | |
7491 | }; | |
7492 | struct nfs4_secinfo_res res = { | |
7493 | .flavors = flavors, | |
7494 | }; | |
7495 | struct rpc_message msg = { | |
7496 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7497 | .rpc_argp = &args, | |
7498 | .rpc_resp = &res, | |
7499 | }; | |
b1b3e136 WAA |
7500 | struct rpc_clnt *clnt = server->client; |
7501 | int status; | |
7502 | ||
7503 | if (use_integrity) { | |
7504 | clnt = server->nfs_client->cl_rpcclient; | |
7505 | msg.rpc_cred = nfs4_get_clid_cred(server->nfs_client); | |
7506 | } | |
7507 | ||
7508 | dprintk("--> %s\n", __func__); | |
7509 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
7510 | &res.seq_res, 0); | |
7511 | dprintk("<-- %s status=%d\n", __func__, status); | |
7512 | ||
7513 | if (msg.rpc_cred) | |
7514 | put_rpccred(msg.rpc_cred); | |
7515 | ||
7516 | return status; | |
fca78d6d BS |
7517 | } |
7518 | ||
7519 | static int | |
7520 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7521 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7522 | { | |
7523 | struct nfs4_exception exception = { }; | |
7524 | int err; | |
7525 | do { | |
b1b3e136 WAA |
7526 | /* first try using integrity protection */ |
7527 | err = -NFS4ERR_WRONGSEC; | |
7528 | ||
7529 | /* try to use integrity protection with machine cred */ | |
7530 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
7531 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7532 | flavors, true); | |
7533 | ||
7534 | /* | |
7535 | * if unable to use integrity protection, or SECINFO with | |
7536 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
7537 | * disallowed by spec, but exists in deployed servers) use | |
7538 | * the current filesystem's rpc_client and the user cred. | |
7539 | */ | |
7540 | if (err == -NFS4ERR_WRONGSEC) | |
7541 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7542 | flavors, false); | |
7543 | ||
fca78d6d BS |
7544 | switch (err) { |
7545 | case 0: | |
7546 | case -NFS4ERR_WRONGSEC: | |
7547 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 7548 | goto out; |
fca78d6d BS |
7549 | default: |
7550 | err = nfs4_handle_exception(server, err, &exception); | |
7551 | } | |
7552 | } while (exception.retry); | |
05e9cfb4 | 7553 | out: |
fca78d6d BS |
7554 | return err; |
7555 | } | |
7556 | ||
7557 | static int | |
7558 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7559 | struct nfs_fsinfo *info) | |
7560 | { | |
7561 | int err; | |
7562 | struct page *page; | |
7563 | rpc_authflavor_t flavor; | |
7564 | struct nfs4_secinfo_flavors *flavors; | |
7565 | ||
7566 | page = alloc_page(GFP_KERNEL); | |
7567 | if (!page) { | |
7568 | err = -ENOMEM; | |
7569 | goto out; | |
7570 | } | |
7571 | ||
7572 | flavors = page_address(page); | |
7573 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7574 | ||
7575 | /* | |
7576 | * Fall back on "guess and check" method if | |
7577 | * the server doesn't support SECINFO_NO_NAME | |
7578 | */ | |
7579 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
7580 | err = nfs4_find_root_sec(server, fhandle, info); | |
7581 | goto out_freepage; | |
7582 | } | |
7583 | if (err) | |
7584 | goto out_freepage; | |
7585 | ||
7586 | flavor = nfs_find_best_sec(flavors); | |
7587 | if (err == 0) | |
7588 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
7589 | ||
7590 | out_freepage: | |
7591 | put_page(page); | |
7592 | if (err == -EACCES) | |
7593 | return -EPERM; | |
7594 | out: | |
7595 | return err; | |
7596 | } | |
1cab0652 | 7597 | |
ab7cb0df TM |
7598 | static int _nfs41_test_stateid(struct nfs_server *server, |
7599 | nfs4_stateid *stateid, | |
7600 | struct rpc_cred *cred) | |
7d974794 BS |
7601 | { |
7602 | int status; | |
7603 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7604 | .stateid = stateid, |
7d974794 BS |
7605 | }; |
7606 | struct nfs41_test_stateid_res res; | |
7607 | struct rpc_message msg = { | |
7608 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7609 | .rpc_argp = &args, | |
7610 | .rpc_resp = &res, | |
ab7cb0df | 7611 | .rpc_cred = cred, |
7d974794 | 7612 | }; |
3787d506 WAA |
7613 | struct rpc_clnt *rpc_client = server->client; |
7614 | ||
7615 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
7616 | &rpc_client, &msg); | |
1cab0652 | 7617 | |
38527b15 | 7618 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 7619 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 7620 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 7621 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 7622 | &args.seq_args, &res.seq_res); |
38527b15 CL |
7623 | if (status != NFS_OK) { |
7624 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7625 | return status; |
38527b15 CL |
7626 | } |
7627 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7628 | return -res.status; |
7d974794 BS |
7629 | } |
7630 | ||
38527b15 CL |
7631 | /** |
7632 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7633 | * | |
7634 | * @server: server / transport on which to perform the operation | |
7635 | * @stateid: state ID to test | |
ab7cb0df | 7636 | * @cred: credential |
38527b15 CL |
7637 | * |
7638 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7639 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7640 | * failed or the state ID is not currently valid. | |
7641 | */ | |
ab7cb0df TM |
7642 | static int nfs41_test_stateid(struct nfs_server *server, |
7643 | nfs4_stateid *stateid, | |
7644 | struct rpc_cred *cred) | |
7d974794 BS |
7645 | { |
7646 | struct nfs4_exception exception = { }; | |
7647 | int err; | |
7648 | do { | |
ab7cb0df | 7649 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
7650 | if (err != -NFS4ERR_DELAY) |
7651 | break; | |
7652 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7653 | } while (exception.retry); |
7654 | return err; | |
7655 | } | |
9aeda35f | 7656 | |
7c1d5fae TM |
7657 | struct nfs_free_stateid_data { |
7658 | struct nfs_server *server; | |
7659 | struct nfs41_free_stateid_args args; | |
9aeda35f | 7660 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
7661 | }; |
7662 | ||
7663 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
7664 | { | |
7665 | struct nfs_free_stateid_data *data = calldata; | |
7666 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
7667 | &data->args.seq_args, | |
7668 | &data->res.seq_res, | |
7669 | task); | |
7670 | } | |
7671 | ||
7672 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
7673 | { | |
7674 | struct nfs_free_stateid_data *data = calldata; | |
7675 | ||
7676 | nfs41_sequence_done(task, &data->res.seq_res); | |
7677 | ||
7678 | switch (task->tk_status) { | |
7679 | case -NFS4ERR_DELAY: | |
7680 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
7681 | rpc_restart_call_prepare(task); | |
7682 | } | |
7683 | } | |
7684 | ||
7685 | static void nfs41_free_stateid_release(void *calldata) | |
7686 | { | |
7687 | kfree(calldata); | |
7688 | } | |
7689 | ||
17f26b12 | 7690 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
7691 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
7692 | .rpc_call_done = nfs41_free_stateid_done, | |
7693 | .rpc_release = nfs41_free_stateid_release, | |
7694 | }; | |
7695 | ||
7696 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
7697 | nfs4_stateid *stateid, | |
ab7cb0df | 7698 | struct rpc_cred *cred, |
7c1d5fae TM |
7699 | bool privileged) |
7700 | { | |
9aeda35f BS |
7701 | struct rpc_message msg = { |
7702 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 7703 | .rpc_cred = cred, |
9aeda35f | 7704 | }; |
7c1d5fae TM |
7705 | struct rpc_task_setup task_setup = { |
7706 | .rpc_client = server->client, | |
7707 | .rpc_message = &msg, | |
7708 | .callback_ops = &nfs41_free_stateid_ops, | |
7709 | .flags = RPC_TASK_ASYNC, | |
7710 | }; | |
7711 | struct nfs_free_stateid_data *data; | |
9aeda35f | 7712 | |
3787d506 WAA |
7713 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
7714 | &task_setup.rpc_client, &msg); | |
7715 | ||
38527b15 | 7716 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
7717 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7718 | if (!data) | |
7719 | return ERR_PTR(-ENOMEM); | |
7720 | data->server = server; | |
7721 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
7722 | ||
7723 | task_setup.callback_data = data; | |
7724 | ||
7725 | msg.rpc_argp = &data->args; | |
7726 | msg.rpc_resp = &data->res; | |
a9c92d6b | 7727 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
7728 | if (privileged) |
7729 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
7730 | ||
7731 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
7732 | } |
7733 | ||
38527b15 CL |
7734 | /** |
7735 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7736 | * | |
7737 | * @server: server / transport on which to perform the operation | |
7738 | * @stateid: state ID to release | |
ab7cb0df | 7739 | * @cred: credential |
38527b15 CL |
7740 | * |
7741 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7742 | * negative NFS4ERR value is returned. | |
7743 | */ | |
ab7cb0df TM |
7744 | static int nfs41_free_stateid(struct nfs_server *server, |
7745 | nfs4_stateid *stateid, | |
7746 | struct rpc_cred *cred) | |
9aeda35f | 7747 | { |
7c1d5fae TM |
7748 | struct rpc_task *task; |
7749 | int ret; | |
7750 | ||
ab7cb0df | 7751 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
7752 | if (IS_ERR(task)) |
7753 | return PTR_ERR(task); | |
7754 | ret = rpc_wait_for_completion_task(task); | |
7755 | if (!ret) | |
7756 | ret = task->tk_status; | |
7757 | rpc_put_task(task); | |
7758 | return ret; | |
9aeda35f | 7759 | } |
36281caa | 7760 | |
c8b2d0bf TM |
7761 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
7762 | { | |
7763 | struct rpc_task *task; | |
ab7cb0df | 7764 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 7765 | |
ab7cb0df | 7766 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
7767 | nfs4_free_lock_state(server, lsp); |
7768 | if (IS_ERR(task)) | |
7769 | return PTR_ERR(task); | |
7770 | rpc_put_task(task); | |
7771 | return 0; | |
7772 | } | |
7773 | ||
36281caa TM |
7774 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
7775 | const nfs4_stateid *s2) | |
7776 | { | |
2d2f24ad | 7777 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7778 | return false; |
7779 | ||
2d2f24ad | 7780 | if (s1->seqid == s2->seqid) |
36281caa | 7781 | return true; |
2d2f24ad | 7782 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7783 | return true; |
7784 | ||
7785 | return false; | |
7786 | } | |
7787 | ||
557134a3 AA |
7788 | #endif /* CONFIG_NFS_V4_1 */ |
7789 | ||
36281caa TM |
7790 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7791 | const nfs4_stateid *s2) | |
7792 | { | |
f597c537 | 7793 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7794 | } |
7795 | ||
7796 | ||
17280175 | 7797 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7798 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7799 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7800 | .recover_open = nfs4_open_reclaim, |
7801 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7802 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 7803 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7804 | }; |
7805 | ||
591d71cb | 7806 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7807 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7808 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7809 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7810 | .recover_open = nfs4_open_reclaim, | |
7811 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7812 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 7813 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7814 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7815 | }; |
7816 | #endif /* CONFIG_NFS_V4_1 */ | |
7817 | ||
17280175 | 7818 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7819 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7820 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7821 | .recover_open = nfs4_open_expired, | |
7822 | .recover_lock = nfs4_lock_expired, | |
7823 | .establish_clid = nfs4_init_clientid, | |
7824 | }; | |
7825 | ||
7826 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7827 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7828 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7829 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7830 | .recover_open = nfs41_open_expired, |
7831 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7832 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 7833 | }; |
591d71cb | 7834 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7835 | |
17280175 | 7836 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7837 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7838 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7839 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7840 | }; |
7841 | ||
7842 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7843 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7844 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7845 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7846 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7847 | }; |
7848 | #endif | |
7849 | ||
97dc1359 TM |
7850 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7851 | .minor_version = 0, | |
39c6daae TM |
7852 | .init_caps = NFS_CAP_READDIRPLUS |
7853 | | NFS_CAP_ATOMIC_OPEN | |
7854 | | NFS_CAP_CHANGE_ATTR | |
7855 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
7856 | .init_client = nfs40_init_client, |
7857 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 7858 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7859 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 7860 | .free_lock_state = nfs4_release_lockowner, |
9915ea7e | 7861 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
7862 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7863 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7864 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7865 | }; |
7866 | ||
7867 | #if defined(CONFIG_NFS_V4_1) | |
7868 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7869 | .minor_version = 1, | |
39c6daae TM |
7870 | .init_caps = NFS_CAP_READDIRPLUS |
7871 | | NFS_CAP_ATOMIC_OPEN | |
7872 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 7873 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
7874 | | NFS_CAP_STATEID_NFSV41 |
7875 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
7876 | .init_client = nfs41_init_client, |
7877 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 7878 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7879 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7880 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 7881 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
7882 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7883 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7884 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7885 | }; |
7886 | #endif | |
7887 | ||
42c2c424 SD |
7888 | #if defined(CONFIG_NFS_V4_2) |
7889 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
7890 | .minor_version = 2, | |
7017310a BS |
7891 | .init_caps = NFS_CAP_READDIRPLUS |
7892 | | NFS_CAP_ATOMIC_OPEN | |
7893 | | NFS_CAP_CHANGE_ATTR | |
7894 | | NFS_CAP_POSIX_LOCK | |
7895 | | NFS_CAP_STATEID_NFSV41 | |
7896 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
7897 | .init_client = nfs41_init_client, |
7898 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
7899 | .match_stateid = nfs41_match_stateid, |
7900 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 7901 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 7902 | .call_sync_ops = &nfs41_call_sync_ops, |
42c2c424 SD |
7903 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7904 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7905 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
7906 | }; | |
7907 | #endif | |
7908 | ||
97dc1359 TM |
7909 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7910 | [0] = &nfs_v4_0_minor_ops, | |
7911 | #if defined(CONFIG_NFS_V4_1) | |
7912 | [1] = &nfs_v4_1_minor_ops, | |
7913 | #endif | |
42c2c424 SD |
7914 | #if defined(CONFIG_NFS_V4_2) |
7915 | [2] = &nfs_v4_2_minor_ops, | |
7916 | #endif | |
97dc1359 TM |
7917 | }; |
7918 | ||
17f26b12 | 7919 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
7920 | .create = nfs_create, |
7921 | .lookup = nfs_lookup, | |
7922 | .atomic_open = nfs_atomic_open, | |
7923 | .link = nfs_link, | |
7924 | .unlink = nfs_unlink, | |
7925 | .symlink = nfs_symlink, | |
7926 | .mkdir = nfs_mkdir, | |
7927 | .rmdir = nfs_rmdir, | |
7928 | .mknod = nfs_mknod, | |
7929 | .rename = nfs_rename, | |
7930 | .permission = nfs_permission, | |
7931 | .getattr = nfs_getattr, | |
7932 | .setattr = nfs_setattr, | |
7933 | .getxattr = generic_getxattr, | |
7934 | .setxattr = generic_setxattr, | |
7935 | .listxattr = generic_listxattr, | |
7936 | .removexattr = generic_removexattr, | |
7937 | }; | |
7938 | ||
92e1d5be | 7939 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7940 | .permission = nfs_permission, |
7941 | .getattr = nfs_getattr, | |
7942 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7943 | .getxattr = generic_getxattr, |
7944 | .setxattr = generic_setxattr, | |
7945 | .listxattr = generic_listxattr, | |
7946 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7947 | }; |
7948 | ||
509de811 | 7949 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7950 | .version = 4, /* protocol version */ |
7951 | .dentry_ops = &nfs4_dentry_operations, | |
7952 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7953 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7954 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7955 | .getroot = nfs4_proc_get_root, |
281cad46 | 7956 | .submount = nfs4_submount, |
ff9099f2 | 7957 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7958 | .getattr = nfs4_proc_getattr, |
7959 | .setattr = nfs4_proc_setattr, | |
7960 | .lookup = nfs4_proc_lookup, | |
7961 | .access = nfs4_proc_access, | |
7962 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7963 | .create = nfs4_proc_create, |
7964 | .remove = nfs4_proc_remove, | |
7965 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7966 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7967 | .unlink_done = nfs4_proc_unlink_done, |
7968 | .rename = nfs4_proc_rename, | |
d3d4152a | 7969 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7970 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7971 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7972 | .link = nfs4_proc_link, |
7973 | .symlink = nfs4_proc_symlink, | |
7974 | .mkdir = nfs4_proc_mkdir, | |
7975 | .rmdir = nfs4_proc_remove, | |
7976 | .readdir = nfs4_proc_readdir, | |
7977 | .mknod = nfs4_proc_mknod, | |
7978 | .statfs = nfs4_proc_statfs, | |
7979 | .fsinfo = nfs4_proc_fsinfo, | |
7980 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7981 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7982 | .decode_dirent = nfs4_decode_dirent, |
7983 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7984 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7985 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7986 | .read_done = nfs4_read_done, |
1da177e4 | 7987 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7988 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7989 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7990 | .write_done = nfs4_write_done, |
1da177e4 | 7991 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7992 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7993 | .commit_done = nfs4_commit_done, |
1da177e4 | 7994 | .lock = nfs4_proc_lock, |
e50a1c2e | 7995 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7996 | .close_context = nfs4_close_context, |
2b484297 | 7997 | .open_context = nfs4_atomic_open, |
011e2a7f | 7998 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7999 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8000 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8001 | .init_client = nfs4_init_client, |
cdb7eced | 8002 | .free_client = nfs4_free_client, |
1179acc6 BS |
8003 | .create_server = nfs4_create_server, |
8004 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8005 | }; |
8006 | ||
64c2ce8b AK |
8007 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8008 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8009 | .list = nfs4_xattr_list_nfs4_acl, | |
8010 | .get = nfs4_xattr_get_nfs4_acl, | |
8011 | .set = nfs4_xattr_set_nfs4_acl, | |
8012 | }; | |
8013 | ||
8014 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8015 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8016 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8017 | &nfs4_xattr_nfs4_label_handler, | |
8018 | #endif | |
64c2ce8b AK |
8019 | NULL |
8020 | }; | |
8021 | ||
1da177e4 LT |
8022 | /* |
8023 | * Local variables: | |
8024 | * c-basic-offset: 8 | |
8025 | * End: | |
8026 | */ |