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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 *); |
8478eaa1 | 80 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, long *); |
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 | ||
aa9c2669 DQ |
108 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
109 | &dentry->d_name, (void **)&label->label, &label->len); | |
110 | if (err == 0) | |
111 | return label; | |
112 | ||
113 | return NULL; | |
114 | } | |
115 | static inline void | |
116 | nfs4_label_release_security(struct nfs4_label *label) | |
117 | { | |
118 | if (label) | |
119 | security_release_secctx(label->label, label->len); | |
120 | } | |
121 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
122 | { | |
123 | if (label) | |
124 | return server->attr_bitmask; | |
125 | ||
126 | return server->attr_bitmask_nl; | |
127 | } | |
128 | #else | |
129 | static inline struct nfs4_label * | |
130 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
131 | struct iattr *sattr, struct nfs4_label *l) | |
132 | { return NULL; } | |
133 | static inline void | |
134 | nfs4_label_release_security(struct nfs4_label *label) | |
135 | { return; } | |
136 | static inline u32 * | |
137 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
138 | { return server->attr_bitmask; } | |
139 | #endif | |
140 | ||
1da177e4 | 141 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 142 | static int nfs4_map_errors(int err) |
1da177e4 | 143 | { |
52567b03 TM |
144 | if (err >= -1000) |
145 | return err; | |
146 | switch (err) { | |
147 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
148 | case -NFS4ERR_LAYOUTTRYLATER: |
149 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 150 | return -EREMOTEIO; |
7ebb9315 | 151 | case -NFS4ERR_WRONGSEC: |
8897538e | 152 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 153 | return -EPERM; |
3ddeb7c5 TM |
154 | case -NFS4ERR_BADOWNER: |
155 | case -NFS4ERR_BADNAME: | |
156 | return -EINVAL; | |
fb13bfa7 TM |
157 | case -NFS4ERR_SHARE_DENIED: |
158 | return -EACCES; | |
f25efd85 SD |
159 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
160 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
161 | case -NFS4ERR_ACCESS: |
162 | return -EACCES; | |
6e3cf241 TM |
163 | case -NFS4ERR_FILE_OPEN: |
164 | return -EBUSY; | |
52567b03 | 165 | default: |
1da177e4 | 166 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 167 | __func__, -err); |
52567b03 | 168 | break; |
1da177e4 | 169 | } |
52567b03 | 170 | return -EIO; |
1da177e4 LT |
171 | } |
172 | ||
173 | /* | |
174 | * This is our standard bitmap for GETATTR requests. | |
175 | */ | |
1549210f | 176 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
177 | FATTR4_WORD0_TYPE |
178 | | FATTR4_WORD0_CHANGE | |
179 | | FATTR4_WORD0_SIZE | |
180 | | FATTR4_WORD0_FSID | |
181 | | FATTR4_WORD0_FILEID, | |
182 | FATTR4_WORD1_MODE | |
183 | | FATTR4_WORD1_NUMLINKS | |
184 | | FATTR4_WORD1_OWNER | |
185 | | FATTR4_WORD1_OWNER_GROUP | |
186 | | FATTR4_WORD1_RAWDEV | |
187 | | FATTR4_WORD1_SPACE_USED | |
188 | | FATTR4_WORD1_TIME_ACCESS | |
189 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
190 | | FATTR4_WORD1_TIME_MODIFY, |
191 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
192 | FATTR4_WORD2_SECURITY_LABEL | |
193 | #endif | |
1da177e4 LT |
194 | }; |
195 | ||
1549210f TM |
196 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
197 | FATTR4_WORD0_TYPE | |
198 | | FATTR4_WORD0_CHANGE | |
199 | | FATTR4_WORD0_SIZE | |
200 | | FATTR4_WORD0_FSID | |
201 | | FATTR4_WORD0_FILEID, | |
202 | FATTR4_WORD1_MODE | |
203 | | FATTR4_WORD1_NUMLINKS | |
204 | | FATTR4_WORD1_OWNER | |
205 | | FATTR4_WORD1_OWNER_GROUP | |
206 | | FATTR4_WORD1_RAWDEV | |
207 | | FATTR4_WORD1_SPACE_USED | |
208 | | FATTR4_WORD1_TIME_ACCESS | |
209 | | FATTR4_WORD1_TIME_METADATA | |
210 | | FATTR4_WORD1_TIME_MODIFY, | |
211 | FATTR4_WORD2_MDSTHRESHOLD | |
212 | }; | |
213 | ||
e23008ec AA |
214 | static const u32 nfs4_open_noattr_bitmap[3] = { |
215 | FATTR4_WORD0_TYPE | |
216 | | FATTR4_WORD0_CHANGE | |
217 | | FATTR4_WORD0_FILEID, | |
218 | }; | |
219 | ||
a09df2ca | 220 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
221 | FATTR4_WORD0_FILES_AVAIL |
222 | | FATTR4_WORD0_FILES_FREE | |
223 | | FATTR4_WORD0_FILES_TOTAL, | |
224 | FATTR4_WORD1_SPACE_AVAIL | |
225 | | FATTR4_WORD1_SPACE_FREE | |
226 | | FATTR4_WORD1_SPACE_TOTAL | |
227 | }; | |
228 | ||
a09df2ca | 229 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
230 | FATTR4_WORD0_MAXLINK |
231 | | FATTR4_WORD0_MAXNAME, | |
232 | 0 | |
233 | }; | |
234 | ||
dae100c2 | 235 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
236 | | FATTR4_WORD0_MAXREAD |
237 | | FATTR4_WORD0_MAXWRITE | |
238 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 239 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
240 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
241 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
242 | }; |
243 | ||
a09df2ca | 244 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
245 | FATTR4_WORD0_TYPE |
246 | | FATTR4_WORD0_CHANGE | |
247 | | FATTR4_WORD0_SIZE | |
248 | | FATTR4_WORD0_FSID | |
249 | | FATTR4_WORD0_FILEID | |
250 | | FATTR4_WORD0_FS_LOCATIONS, | |
251 | FATTR4_WORD1_MODE | |
252 | | FATTR4_WORD1_NUMLINKS | |
253 | | FATTR4_WORD1_OWNER | |
254 | | FATTR4_WORD1_OWNER_GROUP | |
255 | | FATTR4_WORD1_RAWDEV | |
256 | | FATTR4_WORD1_SPACE_USED | |
257 | | FATTR4_WORD1_TIME_ACCESS | |
258 | | FATTR4_WORD1_TIME_METADATA | |
259 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 260 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
261 | }; |
262 | ||
bc4785cd | 263 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
264 | struct nfs4_readdir_arg *readdir) |
265 | { | |
0dbb4c67 | 266 | __be32 *start, *p; |
1da177e4 | 267 | |
1da177e4 | 268 | if (cookie > 2) { |
b7ef1956 | 269 | readdir->cookie = cookie; |
1da177e4 LT |
270 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
271 | return; | |
272 | } | |
273 | ||
274 | readdir->cookie = 0; | |
275 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
276 | if (cookie == 2) | |
277 | return; | |
278 | ||
279 | /* | |
280 | * NFSv4 servers do not return entries for '.' and '..' | |
281 | * Therefore, we fake these entries here. We let '.' | |
282 | * have cookie 0 and '..' have cookie 1. Note that | |
283 | * when talking to the server, we always send cookie 0 | |
284 | * instead of 1 or 2. | |
285 | */ | |
2b86ce2d | 286 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
287 | |
288 | if (cookie == 0) { | |
289 | *p++ = xdr_one; /* next */ | |
290 | *p++ = xdr_zero; /* cookie, first word */ | |
291 | *p++ = xdr_one; /* cookie, second word */ | |
292 | *p++ = xdr_one; /* entry len */ | |
293 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
294 | p++; | |
295 | *p++ = xdr_one; /* bitmap length */ | |
296 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
297 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 298 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
299 | } |
300 | ||
301 | *p++ = xdr_one; /* next */ | |
302 | *p++ = xdr_zero; /* cookie, first word */ | |
303 | *p++ = xdr_two; /* cookie, second word */ | |
304 | *p++ = xdr_two; /* entry len */ | |
305 | memcpy(p, "..\0\0", 4); /* entry */ | |
306 | p++; | |
307 | *p++ = xdr_one; /* bitmap length */ | |
308 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
309 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 310 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
311 | |
312 | readdir->pgbase = (char *)p - (char *)start; | |
313 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 314 | kunmap_atomic(start); |
1da177e4 LT |
315 | } |
316 | ||
8478eaa1 N |
317 | static long nfs4_update_delay(long *timeout) |
318 | { | |
319 | long ret; | |
320 | if (!timeout) | |
321 | return NFS4_POLL_RETRY_MAX; | |
322 | if (*timeout <= 0) | |
323 | *timeout = NFS4_POLL_RETRY_MIN; | |
324 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
325 | *timeout = NFS4_POLL_RETRY_MAX; | |
326 | ret = *timeout; | |
327 | *timeout <<= 1; | |
328 | return ret; | |
329 | } | |
330 | ||
65de872e TM |
331 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
332 | { | |
333 | int res = 0; | |
334 | ||
335 | might_sleep(); | |
336 | ||
8478eaa1 N |
337 | freezable_schedule_timeout_killable_unsafe( |
338 | nfs4_update_delay(timeout)); | |
65de872e TM |
339 | if (fatal_signal_pending(current)) |
340 | res = -ERESTARTSYS; | |
65de872e TM |
341 | return res; |
342 | } | |
343 | ||
344 | /* This is the error handling routine for processes that are allowed | |
345 | * to sleep. | |
346 | */ | |
b064eca2 | 347 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
348 | { |
349 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 350 | struct nfs4_state *state = exception->state; |
3114ea7a | 351 | struct inode *inode = exception->inode; |
65de872e TM |
352 | int ret = errorcode; |
353 | ||
354 | exception->retry = 0; | |
355 | switch(errorcode) { | |
356 | case 0: | |
357 | return 0; | |
3114ea7a | 358 | case -NFS4ERR_OPENMODE: |
011e2a7f | 359 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 360 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
361 | exception->retry = 1; |
362 | return 0; | |
363 | } | |
364 | if (state == NULL) | |
365 | break; | |
5d422301 TM |
366 | ret = nfs4_schedule_stateid_recovery(server, state); |
367 | if (ret < 0) | |
368 | break; | |
3114ea7a | 369 | goto wait_on_recovery; |
a1d0b5ee | 370 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
371 | case -NFS4ERR_ADMIN_REVOKED: |
372 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
373 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
374 | nfs_remove_bad_delegation(inode); | |
375 | exception->retry = 1; | |
376 | break; | |
377 | } | |
9e33bed5 TM |
378 | if (state == NULL) |
379 | break; | |
5d422301 TM |
380 | ret = nfs4_schedule_stateid_recovery(server, state); |
381 | if (ret < 0) | |
382 | break; | |
0400a6b0 | 383 | goto wait_on_recovery; |
0ced63d1 | 384 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
385 | if (state != NULL) { |
386 | ret = nfs4_schedule_stateid_recovery(server, state); | |
387 | if (ret < 0) | |
388 | break; | |
389 | } | |
65de872e | 390 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 391 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
392 | nfs4_schedule_lease_recovery(clp); |
393 | goto wait_on_recovery; | |
519ae255 CL |
394 | case -NFS4ERR_MOVED: |
395 | ret = nfs4_schedule_migration_recovery(server); | |
396 | if (ret < 0) | |
397 | break; | |
398 | goto wait_on_recovery; | |
8ef2f8d4 CL |
399 | case -NFS4ERR_LEASE_MOVED: |
400 | nfs4_schedule_lease_moved_recovery(clp); | |
401 | goto wait_on_recovery; | |
03391693 | 402 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
403 | case -NFS4ERR_BADSESSION: |
404 | case -NFS4ERR_BADSLOT: | |
405 | case -NFS4ERR_BAD_HIGH_SLOT: | |
406 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
407 | case -NFS4ERR_DEADSESSION: | |
408 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
409 | case -NFS4ERR_SEQ_MISORDERED: | |
410 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
411 | errorcode); | |
9f594791 | 412 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 413 | goto wait_on_recovery; |
03391693 | 414 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 415 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
416 | if (exception->timeout > HZ) { |
417 | /* We have retried a decent amount, time to | |
418 | * fail | |
419 | */ | |
420 | ret = -EBUSY; | |
421 | break; | |
422 | } | |
65de872e TM |
423 | case -NFS4ERR_GRACE: |
424 | case -NFS4ERR_DELAY: | |
425 | ret = nfs4_delay(server->client, &exception->timeout); | |
426 | if (ret != 0) | |
427 | break; | |
a8a4ae3a | 428 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
429 | case -NFS4ERR_OLD_STATEID: |
430 | exception->retry = 1; | |
b064eca2 TM |
431 | break; |
432 | case -NFS4ERR_BADOWNER: | |
433 | /* The following works around a Linux server bug! */ | |
434 | case -NFS4ERR_BADNAME: | |
435 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
436 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
437 | exception->retry = 1; | |
438 | printk(KERN_WARNING "NFS: v4 server %s " | |
439 | "does not accept raw " | |
440 | "uid/gids. " | |
441 | "Reenabling the idmapper.\n", | |
442 | server->nfs_client->cl_hostname); | |
443 | } | |
65de872e TM |
444 | } |
445 | /* We failed to handle the error */ | |
446 | return nfs4_map_errors(ret); | |
0400a6b0 | 447 | wait_on_recovery: |
a2c0b9e2 | 448 | ret = nfs4_wait_clnt_recover(clp); |
519ae255 CL |
449 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
450 | return -EIO; | |
a2c0b9e2 TM |
451 | if (ret == 0) |
452 | exception->retry = 1; | |
453 | return ret; | |
65de872e TM |
454 | } |
455 | ||
a5250def WAA |
456 | /* |
457 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
458 | * or 'false' otherwise. | |
459 | */ | |
460 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
461 | { | |
462 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
463 | ||
464 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
465 | flavor == RPC_AUTH_GSS_KRB5P) | |
466 | return true; | |
467 | ||
468 | return false; | |
469 | } | |
65de872e | 470 | |
452e9352 | 471 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 472 | { |
1da177e4 LT |
473 | spin_lock(&clp->cl_lock); |
474 | if (time_before(clp->cl_last_renewal,timestamp)) | |
475 | clp->cl_last_renewal = timestamp; | |
476 | spin_unlock(&clp->cl_lock); | |
477 | } | |
478 | ||
452e9352 TM |
479 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
480 | { | |
481 | do_renew_lease(server->nfs_client, timestamp); | |
482 | } | |
483 | ||
2a3eb2b9 CL |
484 | struct nfs4_call_sync_data { |
485 | const struct nfs_server *seq_server; | |
486 | struct nfs4_sequence_args *seq_args; | |
487 | struct nfs4_sequence_res *seq_res; | |
488 | }; | |
489 | ||
a9c92d6b CL |
490 | static void nfs4_init_sequence(struct nfs4_sequence_args *args, |
491 | struct nfs4_sequence_res *res, int cache_reply) | |
492 | { | |
493 | args->sa_slot = NULL; | |
494 | args->sa_cache_this = cache_reply; | |
495 | args->sa_privileged = 0; | |
496 | ||
497 | res->sr_slot = NULL; | |
498 | } | |
499 | ||
500 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
501 | { | |
502 | args->sa_privileged = 1; | |
503 | } | |
504 | ||
3bd2384a CL |
505 | static int nfs40_setup_sequence(const struct nfs_server *server, |
506 | struct nfs4_sequence_args *args, | |
507 | struct nfs4_sequence_res *res, | |
508 | struct rpc_task *task) | |
509 | { | |
510 | struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl; | |
511 | struct nfs4_slot *slot; | |
512 | ||
513 | /* slot already allocated? */ | |
514 | if (res->sr_slot != NULL) | |
515 | goto out_start; | |
516 | ||
517 | spin_lock(&tbl->slot_tbl_lock); | |
518 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
519 | goto out_sleep; | |
520 | ||
521 | slot = nfs4_alloc_slot(tbl); | |
522 | if (IS_ERR(slot)) { | |
523 | if (slot == ERR_PTR(-ENOMEM)) | |
524 | task->tk_timeout = HZ >> 2; | |
525 | goto out_sleep; | |
526 | } | |
527 | spin_unlock(&tbl->slot_tbl_lock); | |
528 | ||
529 | args->sa_slot = slot; | |
530 | res->sr_slot = slot; | |
531 | ||
532 | out_start: | |
533 | rpc_call_start(task); | |
534 | return 0; | |
535 | ||
536 | out_sleep: | |
537 | if (args->sa_privileged) | |
538 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
539 | NULL, RPC_PRIORITY_PRIVILEGED); | |
540 | else | |
541 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
542 | spin_unlock(&tbl->slot_tbl_lock); | |
543 | return -EAGAIN; | |
544 | } | |
545 | ||
546 | static int nfs40_sequence_done(struct rpc_task *task, | |
547 | struct nfs4_sequence_res *res) | |
548 | { | |
549 | struct nfs4_slot *slot = res->sr_slot; | |
550 | struct nfs4_slot_table *tbl; | |
551 | ||
cab92c19 | 552 | if (slot == NULL) |
3bd2384a CL |
553 | goto out; |
554 | ||
555 | tbl = slot->table; | |
556 | spin_lock(&tbl->slot_tbl_lock); | |
557 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
558 | nfs4_free_slot(tbl, slot); | |
559 | spin_unlock(&tbl->slot_tbl_lock); | |
560 | ||
561 | res->sr_slot = NULL; | |
562 | out: | |
563 | return 1; | |
564 | } | |
565 | ||
cccef3b9 AA |
566 | #if defined(CONFIG_NFS_V4_1) |
567 | ||
d185a334 | 568 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 569 | { |
e3725ec0 | 570 | struct nfs4_session *session; |
13615871 | 571 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 572 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 573 | bool send_new_highest_used_slotid = false; |
13615871 | 574 | |
a13ce7c6 | 575 | tbl = slot->table; |
e3725ec0 | 576 | session = tbl->session; |
ea028ac9 | 577 | |
35dc1d74 | 578 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
579 | /* Be nice to the server: try to ensure that the last transmitted |
580 | * value for highest_user_slotid <= target_highest_slotid | |
581 | */ | |
582 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
583 | send_new_highest_used_slotid = true; | |
584 | ||
a13ce7c6 | 585 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
586 | send_new_highest_used_slotid = false; |
587 | goto out_unlock; | |
588 | } | |
a13ce7c6 | 589 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
590 | |
591 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
592 | send_new_highest_used_slotid = false; | |
b75ad4cd | 593 | out_unlock: |
35dc1d74 | 594 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 595 | res->sr_slot = NULL; |
c10e4498 TM |
596 | if (send_new_highest_used_slotid) |
597 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
598 | } |
599 | ||
f9c96fcc | 600 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 601 | { |
e3725ec0 | 602 | struct nfs4_session *session; |
a13ce7c6 | 603 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 604 | struct nfs_client *clp; |
ac20d163 | 605 | bool interrupted = false; |
85563073 | 606 | int ret = 1; |
b0df806c | 607 | |
a13ce7c6 TM |
608 | if (slot == NULL) |
609 | goto out_noaction; | |
468f8613 BS |
610 | /* don't increment the sequence number if the task wasn't sent */ |
611 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
612 | goto out; |
613 | ||
e3725ec0 | 614 | session = slot->table->session; |
933602e3 | 615 | |
ac20d163 TM |
616 | if (slot->interrupted) { |
617 | slot->interrupted = 0; | |
618 | interrupted = true; | |
619 | } | |
620 | ||
2f92ae34 | 621 | trace_nfs4_sequence_done(session, res); |
691daf3b | 622 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
623 | switch (res->sr_status) { |
624 | case 0: | |
b0df806c | 625 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 626 | ++slot->seq_nr; |
e3725ec0 | 627 | clp = session->clp; |
8e63b6a8 | 628 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 629 | /* Check sequence flags */ |
b4410c2f TM |
630 | if (res->sr_status_flags != 0) |
631 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 632 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 633 | break; |
ac20d163 TM |
634 | case 1: |
635 | /* | |
636 | * sr_status remains 1 if an RPC level error occurred. | |
637 | * The server may or may not have processed the sequence | |
638 | * operation.. | |
639 | * Mark the slot as having hosted an interrupted RPC call. | |
640 | */ | |
641 | slot->interrupted = 1; | |
642 | goto out; | |
14516c3a TM |
643 | case -NFS4ERR_DELAY: |
644 | /* The server detected a resend of the RPC call and | |
645 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
646 | * of RFC5661. | |
647 | */ | |
df2fabff | 648 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 649 | __func__, |
df2fabff | 650 | slot->slot_nr, |
933602e3 | 651 | slot->seq_nr); |
14516c3a | 652 | goto out_retry; |
85563073 TM |
653 | case -NFS4ERR_BADSLOT: |
654 | /* | |
655 | * The slot id we used was probably retired. Try again | |
656 | * using a different slot id. | |
657 | */ | |
e8794440 TM |
658 | goto retry_nowait; |
659 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
660 | /* |
661 | * Was the last operation on this sequence interrupted? | |
662 | * If so, retry after bumping the sequence number. | |
663 | */ | |
664 | if (interrupted) { | |
665 | ++slot->seq_nr; | |
666 | goto retry_nowait; | |
667 | } | |
e8794440 TM |
668 | /* |
669 | * Could this slot have been previously retired? | |
670 | * If so, then the server may be expecting seq_nr = 1! | |
671 | */ | |
8e63b6a8 TM |
672 | if (slot->seq_nr != 1) { |
673 | slot->seq_nr = 1; | |
674 | goto retry_nowait; | |
675 | } | |
676 | break; | |
e8794440 TM |
677 | case -NFS4ERR_SEQ_FALSE_RETRY: |
678 | ++slot->seq_nr; | |
679 | goto retry_nowait; | |
14516c3a TM |
680 | default: |
681 | /* Just update the slot sequence no. */ | |
933602e3 | 682 | ++slot->seq_nr; |
b0df806c AA |
683 | } |
684 | out: | |
685 | /* The session may be reset by one of the error handlers. */ | |
686 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 687 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 688 | out_noaction: |
85563073 | 689 | return ret; |
e8794440 TM |
690 | retry_nowait: |
691 | if (rpc_restart_call_prepare(task)) { | |
692 | task->tk_status = 0; | |
693 | ret = 0; | |
694 | } | |
695 | goto out; | |
14516c3a | 696 | out_retry: |
d05dd4e9 | 697 | if (!rpc_restart_call(task)) |
14516c3a TM |
698 | goto out; |
699 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
700 | return 0; | |
b0df806c | 701 | } |
f9c96fcc | 702 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 703 | |
14516c3a TM |
704 | static int nfs4_sequence_done(struct rpc_task *task, |
705 | struct nfs4_sequence_res *res) | |
df896455 | 706 | { |
e3725ec0 | 707 | if (res->sr_slot == NULL) |
14516c3a | 708 | return 1; |
3bd2384a CL |
709 | if (!res->sr_slot->table->session) |
710 | return nfs40_sequence_done(task, res); | |
14516c3a | 711 | return nfs41_sequence_done(task, res); |
df896455 TM |
712 | } |
713 | ||
dc70d7b3 | 714 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
715 | struct nfs4_sequence_args *args, |
716 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
717 | struct rpc_task *task) |
718 | { | |
fbcd4abc AA |
719 | struct nfs4_slot *slot; |
720 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
721 | |
722 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 723 | /* slot already allocated? */ |
dfb4f309 | 724 | if (res->sr_slot != NULL) |
d9afbd1b | 725 | goto out_success; |
ce5039c1 | 726 | |
fbcd4abc AA |
727 | tbl = &session->fc_slot_table; |
728 | ||
69d206b5 TM |
729 | task->tk_timeout = 0; |
730 | ||
fbcd4abc | 731 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 732 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 733 | !args->sa_privileged) { |
0b1c8fc4 | 734 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 735 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 736 | goto out_sleep; |
689cf5c1 AB |
737 | } |
738 | ||
2dc03b7f | 739 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
740 | if (IS_ERR(slot)) { |
741 | /* If out of memory, try again in 1/4 second */ | |
742 | if (slot == ERR_PTR(-ENOMEM)) | |
743 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 744 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 745 | goto out_sleep; |
fbcd4abc AA |
746 | } |
747 | spin_unlock(&tbl->slot_tbl_lock); | |
748 | ||
2b2fa717 | 749 | args->sa_slot = slot; |
fbcd4abc | 750 | |
e8d92382 | 751 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 752 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 753 | |
dfb4f309 | 754 | res->sr_slot = slot; |
8e63b6a8 | 755 | res->sr_timestamp = jiffies; |
2a6e26cd | 756 | res->sr_status_flags = 0; |
fbcd4abc AA |
757 | /* |
758 | * sr_status is only set in decode_sequence, and so will remain | |
759 | * set to 1 if an rpc level failure occurs. | |
760 | */ | |
761 | res->sr_status = 1; | |
2f92ae34 | 762 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
763 | out_success: |
764 | rpc_call_start(task); | |
ce5039c1 | 765 | return 0; |
7b939a3f | 766 | out_sleep: |
8fe72bac TM |
767 | /* Privileged tasks are queued with top priority */ |
768 | if (args->sa_privileged) | |
1e1093c7 TM |
769 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
770 | NULL, RPC_PRIORITY_PRIVILEGED); | |
771 | else | |
772 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
773 | spin_unlock(&tbl->slot_tbl_lock); |
774 | return -EAGAIN; | |
ce5039c1 | 775 | } |
dc70d7b3 | 776 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 777 | |
5a580e0a CL |
778 | static int nfs4_setup_sequence(const struct nfs_server *server, |
779 | struct nfs4_sequence_args *args, | |
780 | struct nfs4_sequence_res *res, | |
781 | struct rpc_task *task) | |
ce5039c1 | 782 | { |
035168ab | 783 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
784 | int ret = 0; |
785 | ||
3bd2384a CL |
786 | if (!session) |
787 | return nfs40_setup_sequence(server, args, res, task); | |
035168ab | 788 | |
e8d92382 | 789 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 790 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 791 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 792 | |
9d12b216 | 793 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 794 | |
ce5039c1 AA |
795 | dprintk("<-- %s status=%d\n", __func__, ret); |
796 | return ret; | |
797 | } | |
798 | ||
ce5039c1 AA |
799 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
800 | { | |
2a3eb2b9 | 801 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 802 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 803 | |
035168ab TM |
804 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
805 | ||
d9afbd1b | 806 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
807 | } |
808 | ||
69ab40c4 AA |
809 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
810 | { | |
2a3eb2b9 | 811 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 812 | |
14516c3a | 813 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
814 | } |
815 | ||
17280175 | 816 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 817 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 818 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
819 | }; |
820 | ||
3bd2384a CL |
821 | #else /* !CONFIG_NFS_V4_1 */ |
822 | ||
9915ea7e CL |
823 | static int nfs4_setup_sequence(const struct nfs_server *server, |
824 | struct nfs4_sequence_args *args, | |
825 | struct nfs4_sequence_res *res, | |
826 | struct rpc_task *task) | |
827 | { | |
3bd2384a | 828 | return nfs40_setup_sequence(server, args, res, task); |
9915ea7e CL |
829 | } |
830 | ||
831 | static int nfs4_sequence_done(struct rpc_task *task, | |
832 | struct nfs4_sequence_res *res) | |
833 | { | |
3bd2384a | 834 | return nfs40_sequence_done(task, res); |
9915ea7e | 835 | } |
3bd2384a CL |
836 | |
837 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
838 | |
839 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
840 | { | |
841 | struct nfs4_call_sync_data *data = calldata; | |
842 | nfs4_setup_sequence(data->seq_server, | |
843 | data->seq_args, data->seq_res, task); | |
844 | } | |
845 | ||
846 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
847 | { | |
848 | struct nfs4_call_sync_data *data = calldata; | |
849 | nfs4_sequence_done(task, data->seq_res); | |
850 | } | |
851 | ||
852 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
853 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
854 | .rpc_call_done = nfs40_call_sync_done, | |
855 | }; | |
856 | ||
7c513058 BS |
857 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
858 | struct nfs_server *server, | |
ce5039c1 AA |
859 | struct rpc_message *msg, |
860 | struct nfs4_sequence_args *args, | |
8fe72bac | 861 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
862 | { |
863 | int ret; | |
864 | struct rpc_task *task; | |
9915ea7e | 865 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 866 | struct nfs4_call_sync_data data = { |
035168ab | 867 | .seq_server = server, |
ce5039c1 AA |
868 | .seq_args = args, |
869 | .seq_res = res, | |
ce5039c1 AA |
870 | }; |
871 | struct rpc_task_setup task_setup = { | |
7c513058 | 872 | .rpc_client = clnt, |
ce5039c1 | 873 | .rpc_message = msg, |
9915ea7e | 874 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
875 | .callback_data = &data |
876 | }; | |
877 | ||
ce5039c1 AA |
878 | task = rpc_run_task(&task_setup); |
879 | if (IS_ERR(task)) | |
880 | ret = PTR_ERR(task); | |
881 | else { | |
882 | ret = task->tk_status; | |
883 | rpc_put_task(task); | |
884 | } | |
885 | return ret; | |
886 | } | |
887 | ||
7c513058 BS |
888 | int nfs4_call_sync(struct rpc_clnt *clnt, |
889 | struct nfs_server *server, | |
e73b83f2 BS |
890 | struct rpc_message *msg, |
891 | struct nfs4_sequence_args *args, | |
892 | struct nfs4_sequence_res *res, | |
893 | int cache_reply) | |
894 | { | |
a9c92d6b | 895 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 896 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 897 | } |
cccef3b9 | 898 | |
38478b24 | 899 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 900 | { |
38478b24 | 901 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 902 | |
38478b24 | 903 | spin_lock(&dir->i_lock); |
359d7d1c | 904 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 905 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 906 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 907 | dir->i_version = cinfo->after; |
de242c0b | 908 | nfs_fscache_invalidate(dir); |
38478b24 | 909 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
910 | } |
911 | ||
e56e0b78 | 912 | struct nfs4_opendata { |
c6d00e63 | 913 | struct kref kref; |
e56e0b78 TM |
914 | struct nfs_openargs o_arg; |
915 | struct nfs_openres o_res; | |
cdd4e68b TM |
916 | struct nfs_open_confirmargs c_arg; |
917 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
918 | struct nfs4_string owner_name; |
919 | struct nfs4_string group_name; | |
e56e0b78 | 920 | struct nfs_fattr f_attr; |
1775fd3e | 921 | struct nfs4_label *f_label; |
e56e0b78 | 922 | struct dentry *dir; |
82a2c1b7 | 923 | struct dentry *dentry; |
e56e0b78 | 924 | struct nfs4_state_owner *owner; |
aac00a8d | 925 | struct nfs4_state *state; |
e56e0b78 | 926 | struct iattr attrs; |
26e976a8 | 927 | unsigned long timestamp; |
3e309914 | 928 | unsigned int rpc_done : 1; |
5bc2afc2 | 929 | unsigned int file_created : 1; |
bdeca1b7 | 930 | unsigned int is_recover : 1; |
24ac23ab TM |
931 | int rpc_status; |
932 | int cancelled; | |
e56e0b78 TM |
933 | }; |
934 | ||
49f9a0fa TM |
935 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
936 | int err, struct nfs4_exception *exception) | |
937 | { | |
938 | if (err != -EINVAL) | |
939 | return false; | |
940 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
941 | return false; | |
942 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
943 | exception->retry = 1; | |
944 | return true; | |
945 | } | |
946 | ||
947 | static enum open_claim_type4 | |
948 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
949 | enum open_claim_type4 claim) | |
950 | { | |
951 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
952 | return claim; | |
953 | switch (claim) { | |
954 | default: | |
955 | return claim; | |
956 | case NFS4_OPEN_CLAIM_FH: | |
957 | return NFS4_OPEN_CLAIM_NULL; | |
958 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
959 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
960 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
961 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
962 | } | |
963 | } | |
2ced46c2 TM |
964 | |
965 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
966 | { | |
967 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 968 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
969 | p->o_res.seqid = p->o_arg.seqid; |
970 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 971 | p->o_res.server = p->o_arg.server; |
5f657530 | 972 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 973 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 974 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
975 | } |
976 | ||
82a2c1b7 | 977 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 978 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 979 | const struct iattr *attrs, |
1775fd3e | 980 | struct nfs4_label *label, |
4a1c0893 | 981 | enum open_claim_type4 claim, |
8535b2be | 982 | gfp_t gfp_mask) |
e56e0b78 | 983 | { |
82a2c1b7 | 984 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
985 | struct inode *dir = parent->d_inode; |
986 | struct nfs_server *server = NFS_SERVER(dir); | |
987 | struct nfs4_opendata *p; | |
988 | ||
8535b2be | 989 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
990 | if (p == NULL) |
991 | goto err; | |
14c43f76 DQ |
992 | |
993 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
994 | if (IS_ERR(p->f_label)) | |
995 | goto err_free_p; | |
996 | ||
8535b2be | 997 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 998 | if (p->o_arg.seqid == NULL) |
14c43f76 | 999 | goto err_free_label; |
82a2c1b7 AV |
1000 | nfs_sb_active(dentry->d_sb); |
1001 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1002 | p->dir = parent; |
1003 | p->owner = sp; | |
1004 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1005 | p->o_arg.open_flags = flags; |
1006 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
1007 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1008 | * will return permission denied for all bits until close */ | |
1009 | if (!(flags & O_EXCL)) { | |
1010 | /* ask server to check for all possible rights as results | |
1011 | * are cached */ | |
1012 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1013 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1014 | } |
7539bbab | 1015 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1016 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1017 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1018 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1019 | p->o_arg.server = server; |
aa9c2669 | 1020 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1021 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 1022 | p->o_arg.label = label; |
49f9a0fa TM |
1023 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1024 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1025 | case NFS4_OPEN_CLAIM_NULL: |
1026 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1027 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1028 | p->o_arg.fh = NFS_FH(dir); | |
1029 | break; | |
1030 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1031 | case NFS4_OPEN_CLAIM_FH: | |
1032 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1033 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1034 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
1035 | } | |
536e43d1 | 1036 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1037 | __u32 verf[2]; |
d77d76ff | 1038 | |
e56e0b78 TM |
1039 | p->o_arg.u.attrs = &p->attrs; |
1040 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1041 | |
1042 | verf[0] = jiffies; | |
1043 | verf[1] = current->pid; | |
1044 | memcpy(p->o_arg.u.verifier.data, verf, | |
1045 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1046 | } |
cdd4e68b TM |
1047 | p->c_arg.fh = &p->o_res.fh; |
1048 | p->c_arg.stateid = &p->o_res.stateid; | |
1049 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1050 | nfs4_init_opendata_res(p); |
c6d00e63 | 1051 | kref_init(&p->kref); |
e56e0b78 | 1052 | return p; |
14c43f76 DQ |
1053 | |
1054 | err_free_label: | |
1055 | nfs4_label_free(p->f_label); | |
1056 | err_free_p: | |
e56e0b78 TM |
1057 | kfree(p); |
1058 | err: | |
1059 | dput(parent); | |
1060 | return NULL; | |
1061 | } | |
1062 | ||
c6d00e63 | 1063 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1064 | { |
c6d00e63 TM |
1065 | struct nfs4_opendata *p = container_of(kref, |
1066 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1067 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1068 | |
1069 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1070 | if (p->state != NULL) |
1071 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1072 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
1073 | |
1074 | nfs4_label_free(p->f_label); | |
1075 | ||
c6d00e63 | 1076 | dput(p->dir); |
82a2c1b7 AV |
1077 | dput(p->dentry); |
1078 | nfs_sb_deactive(sb); | |
6926afd1 | 1079 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1080 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1081 | kfree(p); |
1082 | } | |
1083 | ||
1084 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1085 | { | |
1086 | if (p != NULL) | |
1087 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1088 | } |
1089 | ||
06f814a3 TM |
1090 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1091 | { | |
06f814a3 TM |
1092 | int ret; |
1093 | ||
06f814a3 | 1094 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1095 | return ret; |
1096 | } | |
1097 | ||
dc0b027d | 1098 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1099 | { |
1100 | int ret = 0; | |
dc0b027d | 1101 | |
536e43d1 | 1102 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1103 | goto out; |
1104 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1105 | case FMODE_READ: |
88069f77 TM |
1106 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1107 | && state->n_rdonly != 0; | |
6ee41268 TM |
1108 | break; |
1109 | case FMODE_WRITE: | |
88069f77 TM |
1110 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1111 | && state->n_wronly != 0; | |
6ee41268 TM |
1112 | break; |
1113 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1114 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1115 | && state->n_rdwr != 0; | |
6ee41268 | 1116 | } |
dc0b027d | 1117 | out: |
6ee41268 TM |
1118 | return ret; |
1119 | } | |
1120 | ||
dc0b027d | 1121 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1122 | { |
652f89f6 TM |
1123 | if (delegation == NULL) |
1124 | return 0; | |
dc0b027d | 1125 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1126 | return 0; |
15c831bf | 1127 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1128 | return 0; |
d25be546 TM |
1129 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1130 | return 0; | |
b7391f44 | 1131 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1132 | return 1; |
1133 | } | |
1134 | ||
dc0b027d | 1135 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1136 | { |
dc0b027d | 1137 | switch (fmode) { |
e7616923 TM |
1138 | case FMODE_WRITE: |
1139 | state->n_wronly++; | |
1140 | break; | |
1141 | case FMODE_READ: | |
1142 | state->n_rdonly++; | |
1143 | break; | |
1144 | case FMODE_READ|FMODE_WRITE: | |
1145 | state->n_rdwr++; | |
1146 | } | |
dc0b027d | 1147 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1148 | } |
1149 | ||
4f14c194 TM |
1150 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1151 | { | |
1152 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1153 | bool need_recover = false; | |
1154 | ||
1155 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1156 | need_recover = true; | |
1157 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1158 | need_recover = true; | |
1159 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1160 | need_recover = true; | |
1161 | if (need_recover) | |
1162 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1163 | } | |
1164 | ||
e999e80e TM |
1165 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1166 | nfs4_stateid *stateid) | |
1167 | { | |
1168 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1169 | return true; | |
4f14c194 TM |
1170 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1171 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1172 | return true; |
4f14c194 | 1173 | } |
e999e80e TM |
1174 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1175 | return true; | |
1176 | return false; | |
1177 | } | |
1178 | ||
226056c5 TM |
1179 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
1180 | nfs4_stateid *stateid, fmode_t fmode) | |
003707c7 | 1181 | { |
226056c5 TM |
1182 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1183 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1184 | case FMODE_WRITE: | |
1185 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1186 | break; | |
1187 | case FMODE_READ: | |
1188 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1189 | break; | |
1190 | case 0: | |
1191 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1192 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1193 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1194 | } | |
1195 | if (stateid == NULL) | |
1196 | return; | |
1197 | if (!nfs_need_update_open_stateid(state, stateid)) | |
1198 | return; | |
003707c7 | 1199 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1200 | nfs4_stateid_copy(&state->stateid, stateid); |
1201 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1202 | } |
1203 | ||
1204 | static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) | |
1205 | { | |
1206 | write_seqlock(&state->seqlock); | |
1207 | nfs_clear_open_stateid_locked(state, stateid, fmode); | |
1208 | write_sequnlock(&state->seqlock); | |
4f14c194 TM |
1209 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1210 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1211 | } |
1212 | ||
dc0b027d | 1213 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1214 | { |
dc0b027d | 1215 | switch (fmode) { |
003707c7 TM |
1216 | case FMODE_READ: |
1217 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1218 | break; | |
1219 | case FMODE_WRITE: | |
1220 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1221 | break; | |
1222 | case FMODE_READ|FMODE_WRITE: | |
1223 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1224 | } | |
e999e80e TM |
1225 | if (!nfs_need_update_open_stateid(state, stateid)) |
1226 | return; | |
1227 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1228 | nfs4_stateid_copy(&state->stateid, stateid); | |
1229 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1230 | } |
1231 | ||
dc0b027d | 1232 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1233 | { |
8bda4e4c TM |
1234 | /* |
1235 | * Protect the call to nfs4_state_set_mode_locked and | |
1236 | * serialise the stateid update | |
1237 | */ | |
1238 | write_seqlock(&state->seqlock); | |
003707c7 | 1239 | if (deleg_stateid != NULL) { |
f597c537 | 1240 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1241 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1242 | } | |
1243 | if (open_stateid != NULL) | |
dc0b027d | 1244 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1245 | write_sequnlock(&state->seqlock); |
1246 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1247 | update_open_stateflags(state, fmode); |
ec073428 | 1248 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1249 | } |
1250 | ||
dc0b027d | 1251 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1252 | { |
1253 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1254 | struct nfs_delegation *deleg_cur; | |
1255 | int ret = 0; | |
1256 | ||
dc0b027d | 1257 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1258 | |
1259 | rcu_read_lock(); | |
1260 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1261 | if (deleg_cur == NULL) | |
1262 | goto no_delegation; | |
1263 | ||
1264 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1265 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1266 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1267 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1268 | goto no_delegation_unlock; |
1269 | ||
1270 | if (delegation == NULL) | |
1271 | delegation = &deleg_cur->stateid; | |
f597c537 | 1272 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1273 | goto no_delegation_unlock; |
1274 | ||
b7391f44 | 1275 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1276 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1277 | ret = 1; |
1278 | no_delegation_unlock: | |
1279 | spin_unlock(&deleg_cur->lock); | |
1280 | no_delegation: | |
1281 | rcu_read_unlock(); | |
1282 | ||
1283 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1284 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1285 | ret = 1; |
1286 | } | |
4f14c194 TM |
1287 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1288 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1289 | |
1290 | return ret; | |
1291 | } | |
1292 | ||
1293 | ||
dc0b027d | 1294 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1295 | { |
1296 | struct nfs_delegation *delegation; | |
1297 | ||
1298 | rcu_read_lock(); | |
1299 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1300 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1301 | rcu_read_unlock(); |
1302 | return; | |
1303 | } | |
1304 | rcu_read_unlock(); | |
57ec14c5 | 1305 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1306 | } |
1307 | ||
6ee41268 | 1308 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1309 | { |
1310 | struct nfs4_state *state = opendata->state; | |
1311 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1312 | struct nfs_delegation *delegation; | |
f448badd | 1313 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1314 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1315 | nfs4_stateid stateid; |
1316 | int ret = -EAGAIN; | |
1317 | ||
aac00a8d | 1318 | for (;;) { |
61beef75 | 1319 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1320 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1321 | update_open_stateflags(state, fmode); |
6ee41268 | 1322 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1323 | goto out_return_state; |
6ee41268 | 1324 | } |
61beef75 | 1325 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1326 | rcu_read_lock(); |
1327 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1328 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1329 | rcu_read_unlock(); |
aac00a8d | 1330 | break; |
34310430 | 1331 | } |
aac00a8d | 1332 | /* Save the delegation */ |
f597c537 | 1333 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1334 | rcu_read_unlock(); |
fa332941 | 1335 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1336 | if (!opendata->is_recover) { |
1337 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1338 | if (ret != 0) | |
1339 | goto out; | |
1340 | } | |
aac00a8d | 1341 | ret = -EAGAIN; |
34310430 TM |
1342 | |
1343 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1344 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1345 | goto out_return_state; |
aac00a8d | 1346 | } |
aac00a8d TM |
1347 | out: |
1348 | return ERR_PTR(ret); | |
1349 | out_return_state: | |
1350 | atomic_inc(&state->count); | |
1351 | return state; | |
1352 | } | |
1353 | ||
e23008ec AA |
1354 | static void |
1355 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1356 | { | |
1357 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1358 | struct nfs_delegation *delegation; | |
1359 | int delegation_flags = 0; | |
1360 | ||
1361 | rcu_read_lock(); | |
1362 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1363 | if (delegation) | |
1364 | delegation_flags = delegation->flags; | |
1365 | rcu_read_unlock(); | |
1366 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1367 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1368 | "returning a delegation for " | |
1369 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1370 | clp->cl_hostname); | |
1371 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1372 | nfs_inode_set_delegation(state->inode, | |
1373 | data->owner->so_cred, | |
1374 | &data->o_res); | |
1375 | else | |
1376 | nfs_inode_reclaim_delegation(state->inode, | |
1377 | data->owner->so_cred, | |
1378 | &data->o_res); | |
1379 | } | |
1380 | ||
1381 | /* | |
1382 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1383 | * and update the nfs4_state. | |
1384 | */ | |
1385 | static struct nfs4_state * | |
1386 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1387 | { | |
1388 | struct inode *inode = data->state->inode; | |
1389 | struct nfs4_state *state = data->state; | |
1390 | int ret; | |
1391 | ||
d2bfda2e WAA |
1392 | if (!data->rpc_done) { |
1393 | if (data->rpc_status) { | |
1394 | ret = data->rpc_status; | |
1395 | goto err; | |
1396 | } | |
1397 | /* cached opens have already been processed */ | |
1398 | goto update; | |
e23008ec AA |
1399 | } |
1400 | ||
e23008ec AA |
1401 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1402 | if (ret) | |
1403 | goto err; | |
1404 | ||
1405 | if (data->o_res.delegation_type != 0) | |
1406 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1407 | update: |
e23008ec AA |
1408 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1409 | data->o_arg.fmode); | |
d49f042a | 1410 | atomic_inc(&state->count); |
e23008ec AA |
1411 | |
1412 | return state; | |
1413 | err: | |
1414 | return ERR_PTR(ret); | |
1415 | ||
1416 | } | |
1417 | ||
1418 | static struct nfs4_state * | |
1419 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1420 | { |
1421 | struct inode *inode; | |
1422 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1423 | int ret; |
24ac23ab | 1424 | |
aac00a8d | 1425 | if (!data->rpc_done) { |
6ee41268 | 1426 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1427 | goto out; |
1428 | } | |
1429 | ||
1b370bc2 | 1430 | ret = -EAGAIN; |
24ac23ab | 1431 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1432 | goto err; |
1775fd3e | 1433 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1434 | ret = PTR_ERR(inode); |
03f28e3a | 1435 | if (IS_ERR(inode)) |
1b370bc2 TM |
1436 | goto err; |
1437 | ret = -ENOMEM; | |
24ac23ab TM |
1438 | state = nfs4_get_open_state(inode, data->owner); |
1439 | if (state == NULL) | |
1b370bc2 | 1440 | goto err_put_inode; |
e23008ec AA |
1441 | if (data->o_res.delegation_type != 0) |
1442 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1443 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1444 | data->o_arg.fmode); |
24ac23ab | 1445 | iput(inode); |
aac00a8d | 1446 | out: |
7aa262b5 | 1447 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1448 | return state; |
1b370bc2 TM |
1449 | err_put_inode: |
1450 | iput(inode); | |
1451 | err: | |
1452 | return ERR_PTR(ret); | |
24ac23ab TM |
1453 | } |
1454 | ||
e23008ec AA |
1455 | static struct nfs4_state * |
1456 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1457 | { | |
1458 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1459 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1460 | return _nfs4_opendata_to_nfs4_state(data); | |
1461 | } | |
1462 | ||
864472e9 TM |
1463 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1464 | { | |
1465 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1466 | struct nfs_open_context *ctx; | |
1467 | ||
1468 | spin_lock(&state->inode->i_lock); | |
1469 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1470 | if (ctx->state != state) | |
1471 | continue; | |
1472 | get_nfs_open_context(ctx); | |
1473 | spin_unlock(&state->inode->i_lock); | |
1474 | return ctx; | |
1475 | } | |
1476 | spin_unlock(&state->inode->i_lock); | |
1477 | return ERR_PTR(-ENOENT); | |
1478 | } | |
1479 | ||
4a1c0893 TM |
1480 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1481 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1482 | { |
1483 | struct nfs4_opendata *opendata; | |
1484 | ||
4a1c0893 | 1485 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1486 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1487 | if (opendata == NULL) |
1488 | return ERR_PTR(-ENOMEM); | |
1489 | opendata->state = state; | |
1490 | atomic_inc(&state->count); | |
1491 | return opendata; | |
1492 | } | |
1493 | ||
dc0b027d | 1494 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1495 | { |
2ced46c2 | 1496 | struct nfs4_state *newstate; |
864472e9 TM |
1497 | int ret; |
1498 | ||
dc0b027d TM |
1499 | opendata->o_arg.open_flags = 0; |
1500 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1501 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1502 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1503 | nfs4_init_opendata_res(opendata); | |
b257957e | 1504 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1505 | if (ret != 0) |
1506 | return ret; | |
2ced46c2 | 1507 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1508 | if (IS_ERR(newstate)) |
1509 | return PTR_ERR(newstate); | |
643168c2 | 1510 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1511 | *res = newstate; |
864472e9 TM |
1512 | return 0; |
1513 | } | |
1514 | ||
1515 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1516 | { | |
864472e9 | 1517 | struct nfs4_state *newstate; |
864472e9 TM |
1518 | int ret; |
1519 | ||
4f14c194 TM |
1520 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1521 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1522 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1523 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1524 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1525 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1526 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1527 | smp_rmb(); |
1528 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1529 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1530 | if (ret != 0) |
1531 | return ret; | |
2ced46c2 TM |
1532 | if (newstate != state) |
1533 | return -ESTALE; | |
864472e9 TM |
1534 | } |
1535 | if (state->n_wronly != 0) { | |
2ced46c2 | 1536 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1537 | if (ret != 0) |
1538 | return ret; | |
2ced46c2 TM |
1539 | if (newstate != state) |
1540 | return -ESTALE; | |
864472e9 TM |
1541 | } |
1542 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1543 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1544 | if (ret != 0) |
1545 | return ret; | |
2ced46c2 TM |
1546 | if (newstate != state) |
1547 | return -ESTALE; | |
864472e9 | 1548 | } |
1ac7e2fd TM |
1549 | /* |
1550 | * We may have performed cached opens for all three recoveries. | |
1551 | * Check if we need to update the current stateid. | |
1552 | */ | |
1553 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1554 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1555 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1556 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1557 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1558 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1559 | } |
864472e9 TM |
1560 | return 0; |
1561 | } | |
1562 | ||
1da177e4 LT |
1563 | /* |
1564 | * OPEN_RECLAIM: | |
1565 | * reclaim state on the server after a reboot. | |
1da177e4 | 1566 | */ |
539cd03a | 1567 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1568 | { |
1ac7e2fd | 1569 | struct nfs_delegation *delegation; |
864472e9 | 1570 | struct nfs4_opendata *opendata; |
dc0b027d | 1571 | fmode_t delegation_type = 0; |
1da177e4 LT |
1572 | int status; |
1573 | ||
4a1c0893 TM |
1574 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1575 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1576 | if (IS_ERR(opendata)) |
1577 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1578 | rcu_read_lock(); |
1579 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1580 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1581 | delegation_type = delegation->type; |
1ac7e2fd | 1582 | rcu_read_unlock(); |
864472e9 TM |
1583 | opendata->o_arg.u.delegation_type = delegation_type; |
1584 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1585 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1586 | return status; |
1587 | } | |
1588 | ||
539cd03a | 1589 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1590 | { |
1591 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1592 | struct nfs4_exception exception = { }; | |
1593 | int err; | |
1594 | do { | |
539cd03a | 1595 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1596 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1597 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1598 | continue; | |
168667c4 | 1599 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1600 | break; |
1601 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1602 | } while (exception.retry); |
1603 | return err; | |
1604 | } | |
1605 | ||
864472e9 TM |
1606 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1607 | { | |
1608 | struct nfs_open_context *ctx; | |
1609 | int ret; | |
1610 | ||
1611 | ctx = nfs4_state_find_open_context(state); | |
1612 | if (IS_ERR(ctx)) | |
91876b13 | 1613 | return -EAGAIN; |
539cd03a | 1614 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1615 | put_nfs_open_context(ctx); |
1616 | return ret; | |
1617 | } | |
1618 | ||
db4f2e63 | 1619 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1620 | { |
be76b5b6 TM |
1621 | switch (err) { |
1622 | default: | |
1623 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1624 | "%d.\n", __func__, err); | |
1625 | case 0: | |
1626 | case -ENOENT: | |
1627 | case -ESTALE: | |
1628 | break; | |
1629 | case -NFS4ERR_BADSESSION: | |
1630 | case -NFS4ERR_BADSLOT: | |
1631 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1632 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1633 | case -NFS4ERR_DEADSESSION: | |
1634 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1635 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1636 | return -EAGAIN; | |
1637 | case -NFS4ERR_STALE_CLIENTID: | |
1638 | case -NFS4ERR_STALE_STATEID: | |
1639 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1640 | case -NFS4ERR_EXPIRED: | |
1641 | /* Don't recall a delegation if it was lost */ | |
1642 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1643 | return -EAGAIN; | |
352297b9 CL |
1644 | case -NFS4ERR_MOVED: |
1645 | nfs4_schedule_migration_recovery(server); | |
1646 | return -EAGAIN; | |
8ef2f8d4 CL |
1647 | case -NFS4ERR_LEASE_MOVED: |
1648 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1649 | return -EAGAIN; | |
be76b5b6 TM |
1650 | case -NFS4ERR_DELEG_REVOKED: |
1651 | case -NFS4ERR_ADMIN_REVOKED: | |
1652 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1653 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1654 | nfs_inode_find_state_and_recover(state->inode, |
1655 | stateid); | |
1656 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1657 | return 0; |
1658 | case -NFS4ERR_DELAY: | |
1659 | case -NFS4ERR_GRACE: | |
1660 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1661 | ssleep(1); | |
1662 | return -EAGAIN; | |
db4f2e63 TM |
1663 | case -ENOMEM: |
1664 | case -NFS4ERR_DENIED: | |
1665 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1666 | return 0; | |
be76b5b6 | 1667 | } |
1da177e4 LT |
1668 | return err; |
1669 | } | |
1670 | ||
db4f2e63 TM |
1671 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1672 | { | |
1673 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1674 | struct nfs4_opendata *opendata; | |
1675 | int err; | |
1676 | ||
1677 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1678 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1679 | if (IS_ERR(opendata)) | |
1680 | return PTR_ERR(opendata); | |
1681 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1682 | err = nfs4_open_recover(opendata, state); | |
1683 | nfs4_opendata_put(opendata); | |
1684 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1685 | } | |
1686 | ||
be05c860 CL |
1687 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1688 | { | |
1689 | struct nfs4_opendata *data = calldata; | |
1690 | ||
17ead6c8 TM |
1691 | nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args, |
1692 | &data->c_res.seq_res, task); | |
be05c860 CL |
1693 | } |
1694 | ||
cdd4e68b TM |
1695 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1696 | { | |
1697 | struct nfs4_opendata *data = calldata; | |
1698 | ||
17ead6c8 | 1699 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1700 | |
cdd4e68b | 1701 | data->rpc_status = task->tk_status; |
26e976a8 | 1702 | if (data->rpc_status == 0) { |
f597c537 | 1703 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1704 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1705 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1706 | data->rpc_done = 1; |
26e976a8 | 1707 | } |
cdd4e68b TM |
1708 | } |
1709 | ||
1710 | static void nfs4_open_confirm_release(void *calldata) | |
1711 | { | |
1712 | struct nfs4_opendata *data = calldata; | |
1713 | struct nfs4_state *state = NULL; | |
1714 | ||
1715 | /* If this request hasn't been cancelled, do nothing */ | |
1716 | if (data->cancelled == 0) | |
1717 | goto out_free; | |
1718 | /* In case of error, no cleanup! */ | |
3e309914 | 1719 | if (!data->rpc_done) |
cdd4e68b | 1720 | goto out_free; |
cdd4e68b | 1721 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1722 | if (!IS_ERR(state)) |
643168c2 | 1723 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1724 | out_free: |
c6d00e63 | 1725 | nfs4_opendata_put(data); |
cdd4e68b TM |
1726 | } |
1727 | ||
1728 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1729 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1730 | .rpc_call_done = nfs4_open_confirm_done, |
1731 | .rpc_release = nfs4_open_confirm_release, | |
1732 | }; | |
1733 | ||
1734 | /* | |
1735 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1736 | */ | |
1737 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1738 | { | |
1739 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1740 | struct rpc_task *task; | |
5138fde0 TM |
1741 | struct rpc_message msg = { |
1742 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1743 | .rpc_argp = &data->c_arg, | |
1744 | .rpc_resp = &data->c_res, | |
1745 | .rpc_cred = data->owner->so_cred, | |
1746 | }; | |
c970aa85 TM |
1747 | struct rpc_task_setup task_setup_data = { |
1748 | .rpc_client = server->client, | |
5138fde0 | 1749 | .rpc_message = &msg, |
c970aa85 TM |
1750 | .callback_ops = &nfs4_open_confirm_ops, |
1751 | .callback_data = data, | |
101070ca | 1752 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1753 | .flags = RPC_TASK_ASYNC, |
1754 | }; | |
1da177e4 LT |
1755 | int status; |
1756 | ||
17ead6c8 | 1757 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1758 | kref_get(&data->kref); |
3e309914 TM |
1759 | data->rpc_done = 0; |
1760 | data->rpc_status = 0; | |
5138fde0 | 1761 | data->timestamp = jiffies; |
c970aa85 | 1762 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1763 | if (IS_ERR(task)) |
cdd4e68b | 1764 | return PTR_ERR(task); |
cdd4e68b TM |
1765 | status = nfs4_wait_for_completion_rpc_task(task); |
1766 | if (status != 0) { | |
1767 | data->cancelled = 1; | |
1768 | smp_wmb(); | |
1769 | } else | |
1770 | status = data->rpc_status; | |
e6b3c4db | 1771 | rpc_put_task(task); |
1da177e4 LT |
1772 | return status; |
1773 | } | |
1774 | ||
24ac23ab | 1775 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1776 | { |
24ac23ab TM |
1777 | struct nfs4_opendata *data = calldata; |
1778 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1779 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1780 | |
24ac23ab | 1781 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1782 | goto out_wait; |
aac00a8d TM |
1783 | /* |
1784 | * Check if we still need to send an OPEN call, or if we can use | |
1785 | * a delegation instead. | |
1786 | */ | |
1787 | if (data->state != NULL) { | |
1788 | struct nfs_delegation *delegation; | |
1789 | ||
dc0b027d | 1790 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1791 | goto out_no_action; |
aac00a8d TM |
1792 | rcu_read_lock(); |
1793 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1794 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1795 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1796 | can_open_delegated(delegation, data->o_arg.fmode)) |
1797 | goto unlock_no_action; | |
aac00a8d TM |
1798 | rcu_read_unlock(); |
1799 | } | |
95b72eb0 | 1800 | /* Update client id. */ |
549b19cc | 1801 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1802 | switch (data->o_arg.claim) { |
1803 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1804 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1805 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1806 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1807 | case NFS4_OPEN_CLAIM_FH: |
1808 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1809 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1810 | } | |
26e976a8 | 1811 | data->timestamp = jiffies; |
035168ab | 1812 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1813 | &data->o_arg.seq_args, |
2240a9e2 TM |
1814 | &data->o_res.seq_res, |
1815 | task) != 0) | |
1816 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1817 | |
1818 | /* Set the create mode (note dependency on the session type) */ | |
1819 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1820 | if (data->o_arg.open_flags & O_EXCL) { | |
1821 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1822 | if (nfs4_has_persistent_session(clp)) | |
1823 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1824 | else if (clp->cl_mvops->minor_version > 0) | |
1825 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1826 | } | |
6ee41268 | 1827 | return; |
652f89f6 TM |
1828 | unlock_no_action: |
1829 | rcu_read_unlock(); | |
6ee41268 TM |
1830 | out_no_action: |
1831 | task->tk_action = NULL; | |
c8da19b9 | 1832 | out_wait: |
b75ad4cd | 1833 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1834 | } |
1835 | ||
24ac23ab TM |
1836 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1837 | { | |
1838 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1839 | |
24ac23ab | 1840 | data->rpc_status = task->tk_status; |
d898528c | 1841 | |
14516c3a TM |
1842 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1843 | return; | |
d898528c | 1844 | |
24ac23ab | 1845 | if (task->tk_status == 0) { |
807d66d8 TM |
1846 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1847 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1848 | case S_IFREG: |
1849 | break; | |
1850 | case S_IFLNK: | |
24ac23ab | 1851 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1852 | break; |
1853 | case S_IFDIR: | |
24ac23ab | 1854 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1855 | break; |
1856 | default: | |
24ac23ab | 1857 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1858 | } |
6f926b5b | 1859 | } |
26e976a8 | 1860 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1861 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1862 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1863 | } |
3e309914 | 1864 | data->rpc_done = 1; |
24ac23ab | 1865 | } |
6f926b5b | 1866 | |
24ac23ab TM |
1867 | static void nfs4_open_release(void *calldata) |
1868 | { | |
1869 | struct nfs4_opendata *data = calldata; | |
1870 | struct nfs4_state *state = NULL; | |
1871 | ||
1872 | /* If this request hasn't been cancelled, do nothing */ | |
1873 | if (data->cancelled == 0) | |
1874 | goto out_free; | |
1875 | /* In case of error, no cleanup! */ | |
3e309914 | 1876 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1877 | goto out_free; |
1878 | /* In case we need an open_confirm, no cleanup! */ | |
1879 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1880 | goto out_free; | |
24ac23ab | 1881 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1882 | if (!IS_ERR(state)) |
643168c2 | 1883 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1884 | out_free: |
c6d00e63 | 1885 | nfs4_opendata_put(data); |
24ac23ab TM |
1886 | } |
1887 | ||
1888 | static const struct rpc_call_ops nfs4_open_ops = { | |
1889 | .rpc_call_prepare = nfs4_open_prepare, | |
1890 | .rpc_call_done = nfs4_open_done, | |
1891 | .rpc_release = nfs4_open_release, | |
1892 | }; | |
1893 | ||
b257957e | 1894 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1895 | { |
1896 | struct inode *dir = data->dir->d_inode; | |
1897 | struct nfs_server *server = NFS_SERVER(dir); | |
1898 | struct nfs_openargs *o_arg = &data->o_arg; | |
1899 | struct nfs_openres *o_res = &data->o_res; | |
1900 | struct rpc_task *task; | |
5138fde0 TM |
1901 | struct rpc_message msg = { |
1902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1903 | .rpc_argp = o_arg, | |
1904 | .rpc_resp = o_res, | |
1905 | .rpc_cred = data->owner->so_cred, | |
1906 | }; | |
c970aa85 TM |
1907 | struct rpc_task_setup task_setup_data = { |
1908 | .rpc_client = server->client, | |
5138fde0 | 1909 | .rpc_message = &msg, |
c970aa85 TM |
1910 | .callback_ops = &nfs4_open_ops, |
1911 | .callback_data = data, | |
101070ca | 1912 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1913 | .flags = RPC_TASK_ASYNC, |
1914 | }; | |
24ac23ab TM |
1915 | int status; |
1916 | ||
a9c92d6b | 1917 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1918 | kref_get(&data->kref); |
3e309914 TM |
1919 | data->rpc_done = 0; |
1920 | data->rpc_status = 0; | |
2ced46c2 | 1921 | data->cancelled = 0; |
bdeca1b7 TM |
1922 | data->is_recover = 0; |
1923 | if (isrecover) { | |
8fe72bac | 1924 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1925 | data->is_recover = 1; |
1926 | } | |
c970aa85 | 1927 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1928 | if (IS_ERR(task)) |
1929 | return PTR_ERR(task); | |
1930 | status = nfs4_wait_for_completion_rpc_task(task); | |
1931 | if (status != 0) { | |
1932 | data->cancelled = 1; | |
1933 | smp_wmb(); | |
1934 | } else | |
1935 | status = data->rpc_status; | |
1936 | rpc_put_task(task); | |
1937 | ||
1938 | return status; | |
1939 | } | |
1940 | ||
1941 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1942 | { | |
1943 | struct inode *dir = data->dir->d_inode; | |
1944 | struct nfs_openres *o_res = &data->o_res; | |
1945 | int status; | |
1946 | ||
1947 | status = nfs4_run_open_task(data, 1); | |
1948 | if (status != 0 || !data->rpc_done) | |
1949 | return status; | |
1950 | ||
6926afd1 TM |
1951 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1952 | ||
b257957e AB |
1953 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1954 | status = _nfs4_proc_open_confirm(data); | |
1955 | if (status != 0) | |
1956 | return status; | |
1957 | } | |
1958 | ||
1959 | return status; | |
1960 | } | |
1961 | ||
f3792d63 TM |
1962 | /* |
1963 | * Additional permission checks in order to distinguish between an | |
1964 | * open for read, and an open for execute. This works around the | |
1965 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
1966 | * the same. | |
1967 | * Note that in the non-execute case, we want to turn off permission | |
1968 | * checking if we just created a new file (POSIX open() semantics). | |
1969 | */ | |
6168f62c WAA |
1970 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1971 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1972 | struct nfs4_state *state, fmode_t fmode, |
1973 | int openflags) | |
6168f62c WAA |
1974 | { |
1975 | struct nfs_access_entry cache; | |
1976 | u32 mask; | |
1977 | ||
1978 | /* access call failed or for some reason the server doesn't | |
1979 | * support any access modes -- defer access call until later */ | |
1980 | if (opendata->o_res.access_supported == 0) | |
1981 | return 0; | |
1982 | ||
1983 | mask = 0; | |
f3792d63 TM |
1984 | /* |
1985 | * Use openflags to check for exec, because fmode won't | |
1986 | * always have FMODE_EXEC set when file open for exec. | |
1987 | */ | |
f8d9a897 WAA |
1988 | if (openflags & __FMODE_EXEC) { |
1989 | /* ONLY check for exec rights */ | |
1990 | mask = MAY_EXEC; | |
f3792d63 | 1991 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 1992 | mask = MAY_READ; |
6168f62c WAA |
1993 | |
1994 | cache.cred = cred; | |
1995 | cache.jiffies = jiffies; | |
1996 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1997 | nfs_access_add_cache(state->inode, &cache); | |
1998 | ||
bbd3a8ee | 1999 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2000 | return 0; |
2001 | ||
2002 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2003 | nfs4_close_state(state, fmode); | |
998f40b5 | 2004 | return -EACCES; |
6168f62c WAA |
2005 | } |
2006 | ||
b257957e AB |
2007 | /* |
2008 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2009 | */ | |
2010 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2011 | { | |
2012 | struct inode *dir = data->dir->d_inode; | |
2013 | struct nfs_server *server = NFS_SERVER(dir); | |
2014 | struct nfs_openargs *o_arg = &data->o_arg; | |
2015 | struct nfs_openres *o_res = &data->o_res; | |
2016 | int status; | |
2017 | ||
2018 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2019 | if (!data->rpc_done) |
2020 | return status; | |
2021 | if (status != 0) { | |
2022 | if (status == -NFS4ERR_BADNAME && | |
2023 | !(o_arg->open_flags & O_CREAT)) | |
2024 | return -ENOENT; | |
24ac23ab | 2025 | return status; |
08ef7bd3 | 2026 | } |
24ac23ab | 2027 | |
6926afd1 TM |
2028 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2029 | ||
5bc2afc2 | 2030 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2031 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2032 | if (o_arg->open_flags & O_EXCL) |
2033 | data->file_created = 1; | |
2034 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2035 | data->file_created = 1; | |
2036 | } | |
0df5dd4a TM |
2037 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2038 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2039 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2040 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2041 | if (status != 0) |
24ac23ab | 2042 | return status; |
1da177e4 LT |
2043 | } |
2044 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2045 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2046 | return 0; |
1da177e4 LT |
2047 | } |
2048 | ||
d83217c1 AA |
2049 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2050 | { | |
2051 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2052 | } | |
2053 | ||
1da177e4 LT |
2054 | /* |
2055 | * OPEN_EXPIRED: | |
2056 | * reclaim state on the server after a network partition. | |
2057 | * Assumes caller holds the appropriate lock | |
2058 | */ | |
539cd03a | 2059 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2060 | { |
e56e0b78 | 2061 | struct nfs4_opendata *opendata; |
864472e9 | 2062 | int ret; |
1da177e4 | 2063 | |
4a1c0893 | 2064 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2065 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2066 | if (IS_ERR(opendata)) |
2067 | return PTR_ERR(opendata); | |
864472e9 | 2068 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2069 | if (ret == -ESTALE) |
3d4ff43d | 2070 | d_drop(ctx->dentry); |
c6d00e63 | 2071 | nfs4_opendata_put(opendata); |
864472e9 | 2072 | return ret; |
1da177e4 LT |
2073 | } |
2074 | ||
a9ed2e25 | 2075 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2076 | { |
539cd03a | 2077 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2078 | struct nfs4_exception exception = { }; |
2079 | int err; | |
2080 | ||
2081 | do { | |
539cd03a | 2082 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2083 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2084 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2085 | continue; | |
a9ed2e25 TM |
2086 | switch (err) { |
2087 | default: | |
2088 | goto out; | |
2089 | case -NFS4ERR_GRACE: | |
2090 | case -NFS4ERR_DELAY: | |
2091 | nfs4_handle_exception(server, err, &exception); | |
2092 | err = 0; | |
2093 | } | |
202b50dc | 2094 | } while (exception.retry); |
a9ed2e25 | 2095 | out: |
202b50dc TM |
2096 | return err; |
2097 | } | |
2098 | ||
1da177e4 LT |
2099 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2100 | { | |
1da177e4 | 2101 | struct nfs_open_context *ctx; |
864472e9 | 2102 | int ret; |
1da177e4 | 2103 | |
864472e9 TM |
2104 | ctx = nfs4_state_find_open_context(state); |
2105 | if (IS_ERR(ctx)) | |
91876b13 | 2106 | return -EAGAIN; |
539cd03a | 2107 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2108 | put_nfs_open_context(ctx); |
2109 | return ret; | |
1da177e4 LT |
2110 | } |
2111 | ||
4dfd4f7a TM |
2112 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2113 | { | |
2114 | nfs_remove_bad_delegation(state->inode); | |
2115 | write_seqlock(&state->seqlock); | |
2116 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2117 | write_sequnlock(&state->seqlock); | |
2118 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2119 | } | |
2120 | ||
2121 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2122 | { | |
2123 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2124 | nfs_finish_clear_delegation_stateid(state); | |
2125 | } | |
2126 | ||
2127 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2128 | { | |
2129 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2130 | nfs40_clear_delegation_stateid(state); | |
2131 | return nfs4_open_expired(sp, state); | |
2132 | } | |
2133 | ||
f062eb6c | 2134 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 2135 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2136 | { |
f062eb6c | 2137 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 2138 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
2139 | struct nfs_delegation *delegation; |
2140 | struct rpc_cred *cred = NULL; | |
2141 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
2142 | |
2143 | /* If a state reset has been done, test_stateid is unneeded */ | |
2144 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
2145 | return; | |
2146 | ||
ab7cb0df TM |
2147 | /* Get the delegation credential for use by test/free_stateid */ |
2148 | rcu_read_lock(); | |
2149 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
2150 | if (delegation != NULL && | |
2151 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
2152 | cred = get_rpccred(delegation->cred); | |
2153 | rcu_read_unlock(); | |
2154 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 2155 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
2156 | } else |
2157 | rcu_read_unlock(); | |
2158 | ||
3e60ffdd CL |
2159 | if (status != NFS_OK) { |
2160 | /* Free the stateid unless the server explicitly | |
2161 | * informs us the stateid is unrecognized. */ | |
2162 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2163 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 2164 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2165 | |
6938867e BS |
2166 | write_seqlock(&state->seqlock); |
2167 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2168 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2169 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2170 | } | |
ab7cb0df TM |
2171 | |
2172 | if (cred != NULL) | |
2173 | put_rpccred(cred); | |
3e60ffdd CL |
2174 | } |
2175 | ||
2176 | /** | |
2177 | * nfs41_check_open_stateid - possibly free an open stateid | |
2178 | * | |
2179 | * @state: NFSv4 state for an inode | |
2180 | * | |
2181 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2182 | * Otherwise a negative NFS4ERR value is returned. | |
2183 | */ | |
2184 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2185 | { | |
2186 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2187 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2188 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2189 | int status; |
2190 | ||
2191 | /* If a state reset has been done, test_stateid is unneeded */ | |
2192 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2193 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2194 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2195 | return -NFS4ERR_BAD_STATEID; | |
2196 | ||
ab7cb0df | 2197 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2198 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2199 | if (status != NFS_OK) { |
2200 | /* Free the stateid unless the server explicitly | |
2201 | * informs us the stateid is unrecognized. */ | |
2202 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2203 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2204 | |
2205 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2206 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2207 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2208 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2209 | } |
2210 | return status; | |
2211 | } | |
2212 | ||
2213 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2214 | { | |
eb64cf96 | 2215 | int status; |
b01dd1d8 | 2216 | |
3e60ffdd CL |
2217 | nfs41_clear_delegation_stateid(state); |
2218 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2219 | if (status != NFS_OK) |
2220 | status = nfs4_open_expired(sp, state); | |
2221 | return status; | |
f062eb6c BS |
2222 | } |
2223 | #endif | |
2224 | ||
aa53ed54 JL |
2225 | /* |
2226 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2227 | * fields corresponding to attributes that were used to store the verifier. | |
2228 | * Make sure we clobber those fields in the later setattr call | |
2229 | */ | |
2230 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2231 | { | |
2232 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2233 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2234 | sattr->ia_valid |= ATTR_ATIME; | |
2235 | ||
2236 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2237 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2238 | sattr->ia_valid |= ATTR_MTIME; | |
2239 | } | |
2240 | ||
c21443c2 TM |
2241 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2242 | fmode_t fmode, | |
2243 | int flags, | |
3efb9722 | 2244 | struct nfs_open_context *ctx) |
c21443c2 TM |
2245 | { |
2246 | struct nfs4_state_owner *sp = opendata->owner; | |
2247 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2248 | struct dentry *dentry; |
c21443c2 TM |
2249 | struct nfs4_state *state; |
2250 | unsigned int seq; | |
2251 | int ret; | |
2252 | ||
2253 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2254 | ||
2255 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2256 | if (ret != 0) |
c21443c2 TM |
2257 | goto out; |
2258 | ||
2259 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2260 | ret = PTR_ERR(state); | |
2261 | if (IS_ERR(state)) | |
2262 | goto out; | |
2263 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2264 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2265 | ||
275bb307 TM |
2266 | dentry = opendata->dentry; |
2267 | if (dentry->d_inode == NULL) { | |
2268 | /* FIXME: Is this d_drop() ever needed? */ | |
2269 | d_drop(dentry); | |
2270 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2271 | if (dentry == NULL) { | |
2272 | dentry = opendata->dentry; | |
2273 | } else if (dentry != ctx->dentry) { | |
2274 | dput(ctx->dentry); | |
2275 | ctx->dentry = dget(dentry); | |
2276 | } | |
2277 | nfs_set_verifier(dentry, | |
2278 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2279 | } | |
2280 | ||
c21443c2 TM |
2281 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2282 | if (ret != 0) | |
2283 | goto out; | |
2284 | ||
3efb9722 | 2285 | ctx->state = state; |
c45ffdd2 TM |
2286 | if (dentry->d_inode == state->inode) { |
2287 | nfs_inode_attach_open_context(ctx); | |
2288 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2289 | nfs4_schedule_stateid_recovery(server, state); | |
2290 | } | |
c21443c2 TM |
2291 | out: |
2292 | return ret; | |
2293 | } | |
2294 | ||
1da177e4 | 2295 | /* |
24ac23ab | 2296 | * Returns a referenced nfs4_state |
1da177e4 | 2297 | */ |
82be417a | 2298 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2299 | struct nfs_open_context *ctx, |
82be417a AA |
2300 | int flags, |
2301 | struct iattr *sattr, | |
5bc2afc2 TM |
2302 | struct nfs4_label *label, |
2303 | int *opened) | |
1da177e4 LT |
2304 | { |
2305 | struct nfs4_state_owner *sp; | |
2306 | struct nfs4_state *state = NULL; | |
2307 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2308 | struct nfs4_opendata *opendata; |
4197a055 TM |
2309 | struct dentry *dentry = ctx->dentry; |
2310 | struct rpc_cred *cred = ctx->cred; | |
2311 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2312 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2313 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2314 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2315 | int status; |
1da177e4 LT |
2316 | |
2317 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2318 | status = -ENOMEM; |
d1e284d5 TM |
2319 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2320 | if (sp == NULL) { | |
1da177e4 LT |
2321 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2322 | goto out_err; | |
2323 | } | |
58d9714a TM |
2324 | status = nfs4_recover_expired_lease(server); |
2325 | if (status != 0) | |
b4454fe1 | 2326 | goto err_put_state_owner; |
82a2c1b7 AV |
2327 | if (dentry->d_inode != NULL) |
2328 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2329 | status = -ENOMEM; |
49f9a0fa TM |
2330 | if (dentry->d_inode) |
2331 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2332 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2333 | label, claim, GFP_KERNEL); |
e56e0b78 | 2334 | if (opendata == NULL) |
95d35cb4 | 2335 | goto err_put_state_owner; |
1da177e4 | 2336 | |
14c43f76 DQ |
2337 | if (label) { |
2338 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2339 | if (IS_ERR(olabel)) { | |
2340 | status = PTR_ERR(olabel); | |
2341 | goto err_opendata_put; | |
2342 | } | |
2343 | } | |
2344 | ||
e911b815 TM |
2345 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2346 | if (!opendata->f_attr.mdsthreshold) { | |
2347 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2348 | if (!opendata->f_attr.mdsthreshold) | |
2349 | goto err_free_label; | |
2350 | } | |
1549210f | 2351 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2352 | } |
82a2c1b7 AV |
2353 | if (dentry->d_inode != NULL) |
2354 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2355 | |
3efb9722 | 2356 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2357 | if (status != 0) |
14c43f76 | 2358 | goto err_free_label; |
3efb9722 | 2359 | state = ctx->state; |
6168f62c | 2360 | |
549b19cc TM |
2361 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2362 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2363 | nfs4_exclusive_attrset(opendata, sattr); |
2364 | ||
2365 | nfs_fattr_init(opendata->o_res.f_attr); | |
2366 | status = nfs4_do_setattr(state->inode, cred, | |
2367 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2368 | state, label, olabel); |
2369 | if (status == 0) { | |
0ab64e0e | 2370 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2371 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2372 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2373 | } |
0ab64e0e | 2374 | } |
5bc2afc2 TM |
2375 | if (opendata->file_created) |
2376 | *opened |= FILE_CREATED; | |
82be417a | 2377 | |
e911b815 | 2378 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2379 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2380 | opendata->f_attr.mdsthreshold = NULL; |
2381 | } | |
82be417a | 2382 | |
14c43f76 DQ |
2383 | nfs4_label_free(olabel); |
2384 | ||
c6d00e63 | 2385 | nfs4_opendata_put(opendata); |
1da177e4 | 2386 | nfs4_put_state_owner(sp); |
1da177e4 | 2387 | return 0; |
14c43f76 DQ |
2388 | err_free_label: |
2389 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2390 | err_opendata_put: |
2391 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2392 | err_put_state_owner: |
2393 | nfs4_put_state_owner(sp); | |
1da177e4 | 2394 | out_err: |
1da177e4 LT |
2395 | return status; |
2396 | } | |
2397 | ||
2398 | ||
82be417a | 2399 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2400 | struct nfs_open_context *ctx, |
82be417a AA |
2401 | int flags, |
2402 | struct iattr *sattr, | |
5bc2afc2 TM |
2403 | struct nfs4_label *label, |
2404 | int *opened) | |
1da177e4 | 2405 | { |
49f9a0fa | 2406 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2407 | struct nfs4_exception exception = { }; |
2408 | struct nfs4_state *res; | |
2409 | int status; | |
2410 | ||
2411 | do { | |
5bc2afc2 | 2412 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2413 | res = ctx->state; |
42113a75 | 2414 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2415 | if (status == 0) |
2416 | break; | |
2417 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2418 | * book-keeping w.r.t. state-changing operations | |
2419 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2420 | * It is actually a sign of a bug on the client or on the server. | |
2421 | * | |
2422 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2423 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2424 | * have unhashed the old state_owner for us, and that we can |
2425 | * therefore safely retry using a new one. We should still warn | |
2426 | * the user though... | |
2427 | */ | |
2428 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2429 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2430 | " returned a bad sequence-id error!\n", |
2431 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2432 | exception.retry = 1; |
2433 | continue; | |
2434 | } | |
550f5747 TM |
2435 | /* |
2436 | * BAD_STATEID on OPEN means that the server cancelled our | |
2437 | * state before it received the OPEN_CONFIRM. | |
2438 | * Recover by retrying the request as per the discussion | |
2439 | * on Page 181 of RFC3530. | |
2440 | */ | |
2441 | if (status == -NFS4ERR_BAD_STATEID) { | |
2442 | exception.retry = 1; | |
2443 | continue; | |
2444 | } | |
aac00a8d TM |
2445 | if (status == -EAGAIN) { |
2446 | /* We must have found a delegation */ | |
2447 | exception.retry = 1; | |
2448 | continue; | |
2449 | } | |
49f9a0fa TM |
2450 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2451 | continue; | |
2452 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2453 | status, &exception)); |
2454 | } while (exception.retry); | |
2455 | return res; | |
2456 | } | |
2457 | ||
659bfcd6 TM |
2458 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2459 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2460 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2461 | struct nfs4_label *olabel) | |
1da177e4 | 2462 | { |
3e4f6290 | 2463 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2464 | struct nfs_setattrargs arg = { |
3e4f6290 | 2465 | .fh = NFS_FH(inode), |
1da177e4 LT |
2466 | .iap = sattr, |
2467 | .server = server, | |
2468 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2469 | .label = ilabel, |
1da177e4 LT |
2470 | }; |
2471 | struct nfs_setattrres res = { | |
2472 | .fattr = fattr, | |
1775fd3e | 2473 | .label = olabel, |
1da177e4 LT |
2474 | .server = server, |
2475 | }; | |
2476 | struct rpc_message msg = { | |
659bfcd6 TM |
2477 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2478 | .rpc_argp = &arg, | |
2479 | .rpc_resp = &res, | |
2480 | .rpc_cred = cred, | |
1da177e4 | 2481 | }; |
26e976a8 | 2482 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2483 | fmode_t fmode; |
2484 | bool truncate; | |
65e4308d | 2485 | int status; |
1da177e4 | 2486 | |
aa9c2669 DQ |
2487 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2488 | if (ilabel) | |
2489 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2490 | ||
0e574af1 | 2491 | nfs_fattr_init(fattr); |
1da177e4 | 2492 | |
ee3ae84e TM |
2493 | /* Servers should only apply open mode checks for file size changes */ |
2494 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2495 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2496 | ||
2497 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2498 | /* Use that stateid */ | |
0418dae1 | 2499 | } else if (truncate && state != NULL) { |
2a369153 TM |
2500 | struct nfs_lockowner lockowner = { |
2501 | .l_owner = current->files, | |
2502 | .l_pid = current->tgid, | |
2503 | }; | |
0418dae1 TM |
2504 | if (!nfs4_valid_open_stateid(state)) |
2505 | return -EBADF; | |
2506 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2507 | &lockowner) == -EIO) | |
2508 | return -EBADF; | |
08e9eac4 | 2509 | } else |
f597c537 | 2510 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2511 | |
7c513058 | 2512 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2513 | if (status == 0 && state != NULL) |
2514 | renew_lease(server, timestamp); | |
65e4308d | 2515 | return status; |
1da177e4 LT |
2516 | } |
2517 | ||
659bfcd6 TM |
2518 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2519 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2520 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2521 | struct nfs4_label *olabel) | |
1da177e4 | 2522 | { |
3e4f6290 | 2523 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2524 | struct nfs4_exception exception = { |
2525 | .state = state, | |
3114ea7a | 2526 | .inode = inode, |
a1d0b5ee | 2527 | }; |
1da177e4 LT |
2528 | int err; |
2529 | do { | |
1775fd3e | 2530 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2531 | trace_nfs4_setattr(inode, err); |
451146be TM |
2532 | switch (err) { |
2533 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2534 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2535 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2536 | "applying open mode checks to " | |
2537 | "a SETATTR that is not " | |
2538 | "changing file size.\n", | |
2539 | server->nfs_client->cl_hostname); | |
2540 | } | |
451146be TM |
2541 | if (state && !(state->state & FMODE_WRITE)) { |
2542 | err = -EBADF; | |
2543 | if (sattr->ia_valid & ATTR_OPEN) | |
2544 | err = -EACCES; | |
2545 | goto out; | |
2546 | } | |
2547 | } | |
2548 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2549 | } while (exception.retry); |
451146be | 2550 | out: |
1da177e4 LT |
2551 | return err; |
2552 | } | |
2553 | ||
2554 | struct nfs4_closedata { | |
2555 | struct inode *inode; | |
2556 | struct nfs4_state *state; | |
2557 | struct nfs_closeargs arg; | |
2558 | struct nfs_closeres res; | |
516a6af6 | 2559 | struct nfs_fattr fattr; |
26e976a8 | 2560 | unsigned long timestamp; |
f7e8917a FI |
2561 | bool roc; |
2562 | u32 roc_barrier; | |
1da177e4 LT |
2563 | }; |
2564 | ||
963d8fe5 | 2565 | static void nfs4_free_closedata(void *data) |
9512135d | 2566 | { |
963d8fe5 TM |
2567 | struct nfs4_closedata *calldata = data; |
2568 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2569 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2570 | |
f7e8917a FI |
2571 | if (calldata->roc) |
2572 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2573 | nfs4_put_open_state(calldata->state); |
2574 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2575 | nfs4_put_state_owner(sp); |
322b2b90 | 2576 | nfs_sb_deactive(sb); |
9512135d TM |
2577 | kfree(calldata); |
2578 | } | |
2579 | ||
963d8fe5 | 2580 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2581 | { |
963d8fe5 | 2582 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2583 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2584 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2585 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2586 | |
a3ca5651 | 2587 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2588 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2589 | return; | |
42113a75 | 2590 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2591 | /* hmm. we are done with the inode, and in the process of freeing |
2592 | * the state_owner. we keep this around to process errors | |
2593 | */ | |
1da177e4 LT |
2594 | switch (task->tk_status) { |
2595 | case 0: | |
412f6c4c TM |
2596 | res_stateid = &calldata->res.stateid; |
2597 | if (calldata->arg.fmode == 0 && calldata->roc) | |
f7e8917a FI |
2598 | pnfs_roc_set_barrier(state->inode, |
2599 | calldata->roc_barrier); | |
26e976a8 | 2600 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2601 | break; |
69794ad7 | 2602 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2603 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2604 | case -NFS4ERR_OLD_STATEID: |
2605 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2606 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2607 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2608 | break; |
1da177e4 | 2609 | default: |
8478eaa1 | 2610 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2611 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2612 | goto out_release; |
2613 | } | |
1da177e4 | 2614 | } |
412f6c4c | 2615 | nfs_clear_open_stateid(state, res_stateid, calldata->arg.fmode); |
69794ad7 | 2616 | out_release: |
72211dbe | 2617 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2618 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2619 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2620 | } |
2621 | ||
4ce70ada | 2622 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2623 | { |
4ce70ada | 2624 | struct nfs4_closedata *calldata = data; |
9512135d | 2625 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2626 | struct inode *inode = calldata->inode; |
aee7af35 | 2627 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2628 | int call_close = 0; |
9512135d | 2629 | |
a3ca5651 | 2630 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2631 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2632 | goto out_wait; |
003707c7 | 2633 | |
88069f77 | 2634 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2635 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2636 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2637 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2638 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
003707c7 | 2639 | /* Calculate the change in open mode */ |
cd9288ff | 2640 | calldata->arg.fmode = 0; |
e7616923 | 2641 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2642 | if (state->n_rdonly == 0) |
2643 | call_close |= is_rdonly; | |
2644 | else if (is_rdonly) | |
2645 | calldata->arg.fmode |= FMODE_READ; | |
2646 | if (state->n_wronly == 0) | |
2647 | call_close |= is_wronly; | |
2648 | else if (is_wronly) | |
2649 | calldata->arg.fmode |= FMODE_WRITE; | |
2650 | } else if (is_rdwr) | |
2651 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2652 | ||
2653 | if (calldata->arg.fmode == 0) | |
2654 | call_close |= is_rdwr; | |
2655 | ||
5d422301 TM |
2656 | if (!nfs4_valid_open_stateid(state)) |
2657 | call_close = 0; | |
4cecb76f | 2658 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2659 | |
2660 | if (!call_close) { | |
963d8fe5 | 2661 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2662 | goto out_no_action; |
9512135d | 2663 | } |
88069f77 | 2664 | |
f7e8917a | 2665 | if (calldata->arg.fmode == 0) { |
88069f77 | 2666 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2667 | if (calldata->roc && |
b9536ad5 AA |
2668 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2669 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2670 | goto out_wait; |
b9536ad5 | 2671 | } |
f7e8917a | 2672 | } |
88069f77 | 2673 | |
516a6af6 | 2674 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2675 | calldata->timestamp = jiffies; |
7fdab069 | 2676 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2677 | &calldata->arg.seq_args, |
2678 | &calldata->res.seq_res, | |
2240a9e2 TM |
2679 | task) != 0) |
2680 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2681 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2682 | return; |
2683 | out_no_action: | |
2684 | task->tk_action = NULL; | |
2685 | out_wait: | |
2686 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2687 | } |
2688 | ||
963d8fe5 | 2689 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2690 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2691 | .rpc_call_done = nfs4_close_done, |
2692 | .rpc_release = nfs4_free_closedata, | |
2693 | }; | |
2694 | ||
fe08c546 PT |
2695 | static bool nfs4_state_has_opener(struct nfs4_state *state) |
2696 | { | |
2697 | /* first check existing openers */ | |
2698 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 && | |
2699 | state->n_rdonly != 0) | |
2700 | return true; | |
2701 | ||
2702 | if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 && | |
2703 | state->n_wronly != 0) | |
2704 | return true; | |
2705 | ||
2706 | if (test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 && | |
2707 | state->n_rdwr != 0) | |
2708 | return true; | |
2709 | ||
2710 | return false; | |
2711 | } | |
2712 | ||
2713 | static bool nfs4_roc(struct inode *inode) | |
2714 | { | |
2715 | struct nfs_inode *nfsi = NFS_I(inode); | |
2716 | struct nfs_open_context *ctx; | |
2717 | struct nfs4_state *state; | |
2718 | ||
2719 | spin_lock(&inode->i_lock); | |
2720 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
2721 | state = ctx->state; | |
2722 | if (state == NULL) | |
2723 | continue; | |
2724 | if (nfs4_state_has_opener(state)) { | |
2725 | spin_unlock(&inode->i_lock); | |
2726 | return false; | |
2727 | } | |
2728 | } | |
2729 | spin_unlock(&inode->i_lock); | |
2730 | ||
2731 | if (nfs4_check_delegation(inode, FMODE_READ)) | |
2732 | return false; | |
2733 | ||
2734 | return pnfs_roc(inode); | |
2735 | } | |
2736 | ||
1da177e4 LT |
2737 | /* |
2738 | * It is possible for data to be read/written from a mem-mapped file | |
2739 | * after the sys_close call (which hits the vfs layer as a flush). | |
2740 | * This means that we can't safely call nfsv4 close on a file until | |
2741 | * the inode is cleared. This in turn means that we are not good | |
2742 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2743 | * share state even when we are done with one of the three share | |
2744 | * stateid's in the inode. | |
2745 | * | |
2746 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2747 | */ | |
1f7977c1 | 2748 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2749 | { |
4a35bd41 | 2750 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2751 | struct nfs4_closedata *calldata; |
b39e625b TM |
2752 | struct nfs4_state_owner *sp = state->owner; |
2753 | struct rpc_task *task; | |
5138fde0 TM |
2754 | struct rpc_message msg = { |
2755 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2756 | .rpc_cred = state->owner->so_cred, | |
2757 | }; | |
c970aa85 TM |
2758 | struct rpc_task_setup task_setup_data = { |
2759 | .rpc_client = server->client, | |
5138fde0 | 2760 | .rpc_message = &msg, |
c970aa85 | 2761 | .callback_ops = &nfs4_close_ops, |
101070ca | 2762 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2763 | .flags = RPC_TASK_ASYNC, |
2764 | }; | |
9512135d | 2765 | int status = -ENOMEM; |
1da177e4 | 2766 | |
fa940720 WAA |
2767 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2768 | &task_setup_data.rpc_client, &msg); | |
2769 | ||
8535b2be | 2770 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2771 | if (calldata == NULL) |
9512135d | 2772 | goto out; |
a9c92d6b | 2773 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2774 | calldata->inode = state->inode; |
1da177e4 | 2775 | calldata->state = state; |
4a35bd41 | 2776 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2777 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2778 | /* Serialization for the sequence id */ |
8535b2be | 2779 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2780 | if (calldata->arg.seqid == NULL) |
2781 | goto out_free_calldata; | |
dc0b027d | 2782 | calldata->arg.fmode = 0; |
a65318bf | 2783 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2784 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2785 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2786 | calldata->res.server = server; |
fe08c546 | 2787 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2788 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2789 | |
1174dd1f TM |
2790 | msg.rpc_argp = &calldata->arg; |
2791 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2792 | task_setup_data.callback_data = calldata; |
2793 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2794 | if (IS_ERR(task)) |
2795 | return PTR_ERR(task); | |
a49c3c77 TM |
2796 | status = 0; |
2797 | if (wait) | |
2798 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2799 | rpc_put_task(task); |
a49c3c77 | 2800 | return status; |
9512135d TM |
2801 | out_free_calldata: |
2802 | kfree(calldata); | |
2803 | out: | |
b39e625b TM |
2804 | nfs4_put_open_state(state); |
2805 | nfs4_put_state_owner(sp); | |
9512135d | 2806 | return status; |
1da177e4 LT |
2807 | } |
2808 | ||
2b484297 | 2809 | static struct inode * |
5bc2afc2 TM |
2810 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2811 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2812 | { |
1da177e4 | 2813 | struct nfs4_state *state; |
aa9c2669 DQ |
2814 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2815 | ||
2816 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2817 | |
565277f6 | 2818 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2819 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2820 | |
2821 | nfs4_label_release_security(label); | |
2822 | ||
f46e0bd3 TM |
2823 | if (IS_ERR(state)) |
2824 | return ERR_CAST(state); | |
275bb307 | 2825 | return state->inode; |
1da177e4 LT |
2826 | } |
2827 | ||
1185a552 | 2828 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2829 | { |
2830 | if (ctx->state == NULL) | |
2831 | return; | |
2832 | if (is_sync) | |
643168c2 | 2833 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2834 | else |
643168c2 | 2835 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2836 | } |
1da177e4 | 2837 | |
b944dba3 TM |
2838 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2839 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 2840 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 2841 | |
1da177e4 LT |
2842 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2843 | { | |
43652ad5 BH |
2844 | struct nfs4_server_caps_arg args = { |
2845 | .fhandle = fhandle, | |
2846 | }; | |
1da177e4 LT |
2847 | struct nfs4_server_caps_res res = {}; |
2848 | struct rpc_message msg = { | |
2849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2850 | .rpc_argp = &args, |
1da177e4 LT |
2851 | .rpc_resp = &res, |
2852 | }; | |
2853 | int status; | |
2854 | ||
7c513058 | 2855 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2856 | if (status == 0) { |
b944dba3 TM |
2857 | /* Sanity check the server answers */ |
2858 | switch (server->nfs_client->cl_minorversion) { | |
2859 | case 0: | |
2860 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
2861 | res.attr_bitmask[2] = 0; | |
2862 | break; | |
2863 | case 1: | |
2864 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
2865 | break; | |
2866 | case 2: | |
2867 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
2868 | } | |
1da177e4 | 2869 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
2870 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2871 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2872 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2873 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
2874 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
2875 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
2876 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
2877 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
2878 | server->caps |= NFS_CAP_ACLS; |
2879 | if (res.has_links != 0) | |
2880 | server->caps |= NFS_CAP_HARDLINKS; | |
2881 | if (res.has_symlinks != 0) | |
2882 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2883 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2884 | server->caps |= NFS_CAP_FILEID; | |
2885 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2886 | server->caps |= NFS_CAP_MODE; | |
2887 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2888 | server->caps |= NFS_CAP_NLINK; | |
2889 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2890 | server->caps |= NFS_CAP_OWNER; | |
2891 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2892 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2893 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2894 | server->caps |= NFS_CAP_ATIME; | |
2895 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2896 | server->caps |= NFS_CAP_CTIME; | |
2897 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2898 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2899 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2900 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2901 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2902 | #endif | |
2903 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2904 | sizeof(server->attr_bitmask)); | |
b944dba3 | 2905 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 2906 | |
a65318bf TM |
2907 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2908 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2909 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 2910 | server->cache_consistency_bitmask[2] = 0; |
1da177e4 | 2911 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2912 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2913 | } |
cccef3b9 | 2914 | |
1da177e4 LT |
2915 | return status; |
2916 | } | |
2917 | ||
55a97593 | 2918 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2919 | { |
2920 | struct nfs4_exception exception = { }; | |
2921 | int err; | |
2922 | do { | |
2923 | err = nfs4_handle_exception(server, | |
2924 | _nfs4_server_capabilities(server, fhandle), | |
2925 | &exception); | |
2926 | } while (exception.retry); | |
2927 | return err; | |
2928 | } | |
2929 | ||
2930 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2931 | struct nfs_fsinfo *info) | |
2932 | { | |
aa9c2669 | 2933 | u32 bitmask[3]; |
1da177e4 | 2934 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2935 | .bitmask = bitmask, |
1da177e4 LT |
2936 | }; |
2937 | struct nfs4_lookup_res res = { | |
2938 | .server = server, | |
0e574af1 | 2939 | .fattr = info->fattr, |
1da177e4 LT |
2940 | .fh = fhandle, |
2941 | }; | |
2942 | struct rpc_message msg = { | |
2943 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2944 | .rpc_argp = &args, | |
2945 | .rpc_resp = &res, | |
2946 | }; | |
008f55d0 | 2947 | |
aa9c2669 DQ |
2948 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2949 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2950 | /* | |
2951 | * Process the label in the upcoming getfattr | |
2952 | */ | |
2953 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2954 | ||
0e574af1 | 2955 | nfs_fattr_init(info->fattr); |
7c513058 | 2956 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2957 | } |
2958 | ||
2959 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2960 | struct nfs_fsinfo *info) | |
2961 | { | |
2962 | struct nfs4_exception exception = { }; | |
2963 | int err; | |
2964 | do { | |
fb8a5ba8 | 2965 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2966 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2967 | switch (err) { |
2968 | case 0: | |
2969 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2970 | goto out; |
fb8a5ba8 BS |
2971 | default: |
2972 | err = nfs4_handle_exception(server, err, &exception); | |
2973 | } | |
1da177e4 | 2974 | } while (exception.retry); |
05e9cfb4 | 2975 | out: |
1da177e4 LT |
2976 | return err; |
2977 | } | |
2978 | ||
8f70e95f BS |
2979 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2980 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2981 | { | |
c2190661 TM |
2982 | struct rpc_auth_create_args auth_args = { |
2983 | .pseudoflavor = flavor, | |
2984 | }; | |
8f70e95f BS |
2985 | struct rpc_auth *auth; |
2986 | int ret; | |
2987 | ||
c2190661 | 2988 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2989 | if (IS_ERR(auth)) { |
75bc8821 | 2990 | ret = -EACCES; |
8f70e95f BS |
2991 | goto out; |
2992 | } | |
2993 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2994 | out: |
2995 | return ret; | |
2996 | } | |
2997 | ||
9a744ba3 CL |
2998 | /* |
2999 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3000 | * | |
3001 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3002 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3003 | * | |
3004 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3005 | * negative errno value. | |
3006 | */ | |
801a16dc | 3007 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3008 | struct nfs_fsinfo *info) |
1da177e4 | 3009 | { |
9a744ba3 CL |
3010 | /* Per 3530bis 15.33.5 */ |
3011 | static const rpc_authflavor_t flav_array[] = { | |
3012 | RPC_AUTH_GSS_KRB5P, | |
3013 | RPC_AUTH_GSS_KRB5I, | |
3014 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3015 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3016 | RPC_AUTH_NULL, |
3017 | }; | |
3018 | int status = -EPERM; | |
3019 | size_t i; | |
6a1a1e34 | 3020 | |
4d4b69dd WAA |
3021 | if (server->auth_info.flavor_len > 0) { |
3022 | /* try each flavor specified by user */ | |
3023 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3024 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3025 | server->auth_info.flavors[i]); | |
3026 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3027 | continue; | |
3028 | break; | |
3029 | } | |
3030 | } else { | |
3031 | /* no flavors specified by user, try default list */ | |
3032 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3033 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3034 | flav_array[i]); | |
3035 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3036 | continue; | |
3037 | break; | |
3038 | } | |
8f70e95f | 3039 | } |
9a744ba3 | 3040 | |
fb8a5ba8 BS |
3041 | /* |
3042 | * -EACCESS could mean that the user doesn't have correct permissions | |
3043 | * to access the mount. It could also mean that we tried to mount | |
3044 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3045 | * existing mount programs don't handle -EACCES very well so it should | |
3046 | * be mapped to -EPERM instead. | |
3047 | */ | |
3048 | if (status == -EACCES) | |
3049 | status = -EPERM; | |
801a16dc BS |
3050 | return status; |
3051 | } | |
3052 | ||
2ed4b95b CL |
3053 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3054 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3055 | { | |
3056 | int mv = server->nfs_client->cl_minorversion; | |
3057 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3058 | } | |
3059 | ||
3060 | /** | |
3061 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3062 | * @server: initialized nfs_server handle | |
3063 | * @fhandle: we fill in the pseudo-fs root file handle | |
3064 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3065 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3066 | * |
3067 | * Returns zero on success, or a negative errno. | |
801a16dc | 3068 | */ |
3028eb2b | 3069 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3070 | struct nfs_fsinfo *info, |
3071 | bool auth_probe) | |
801a16dc | 3072 | { |
2ed4b95b CL |
3073 | int status; |
3074 | ||
5e6b1990 TM |
3075 | switch (auth_probe) { |
3076 | case false: | |
3077 | status = nfs4_lookup_root(server, fhandle, info); | |
3078 | if (status != -NFS4ERR_WRONGSEC) | |
3079 | break; | |
5e6b1990 | 3080 | default: |
2ed4b95b | 3081 | status = nfs4_do_find_root_sec(server, fhandle, info); |
5e6b1990 | 3082 | } |
2ed4b95b | 3083 | |
1da177e4 LT |
3084 | if (status == 0) |
3085 | status = nfs4_server_capabilities(server, fhandle); | |
3086 | if (status == 0) | |
3087 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3088 | |
c12e87f4 | 3089 | return nfs4_map_errors(status); |
1da177e4 LT |
3090 | } |
3091 | ||
bae36241 BS |
3092 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3093 | struct nfs_fsinfo *info) | |
3094 | { | |
3095 | int error; | |
3096 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3097 | struct nfs4_label *label = NULL; |
bae36241 BS |
3098 | |
3099 | error = nfs4_server_capabilities(server, mntfh); | |
3100 | if (error < 0) { | |
3101 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3102 | return error; | |
3103 | } | |
3104 | ||
14c43f76 DQ |
3105 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3106 | if (IS_ERR(label)) | |
3107 | return PTR_ERR(label); | |
3108 | ||
1775fd3e | 3109 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3110 | if (error < 0) { |
3111 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3112 | goto err_free_label; |
bae36241 BS |
3113 | } |
3114 | ||
3115 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3116 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3117 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3118 | ||
14c43f76 DQ |
3119 | err_free_label: |
3120 | nfs4_label_free(label); | |
3121 | ||
bae36241 BS |
3122 | return error; |
3123 | } | |
3124 | ||
6b97fd3d MN |
3125 | /* |
3126 | * Get locations and (maybe) other attributes of a referral. | |
3127 | * Note that we'll actually follow the referral later when | |
3128 | * we detect fsid mismatch in inode revalidation | |
3129 | */ | |
f05d147f BS |
3130 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3131 | const struct qstr *name, struct nfs_fattr *fattr, | |
3132 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3133 | { |
3134 | int status = -ENOMEM; | |
3135 | struct page *page = NULL; | |
3136 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3137 | |
3138 | page = alloc_page(GFP_KERNEL); | |
3139 | if (page == NULL) | |
3140 | goto out; | |
3141 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3142 | if (locations == NULL) | |
3143 | goto out; | |
3144 | ||
f05d147f | 3145 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3146 | if (status != 0) |
3147 | goto out; | |
519ae255 CL |
3148 | |
3149 | /* | |
3150 | * If the fsid didn't change, this is a migration event, not a | |
3151 | * referral. Cause us to drop into the exception handler, which | |
3152 | * will kick off migration recovery. | |
3153 | */ | |
6b97fd3d | 3154 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3155 | dprintk("%s: server did not return a different fsid for" |
3156 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3157 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3158 | goto out; |
3159 | } | |
533eb461 AA |
3160 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3161 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3162 | |
533eb461 | 3163 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3164 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3165 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3166 | out: | |
3167 | if (page) | |
3168 | __free_page(page); | |
5d7ca35a | 3169 | kfree(locations); |
6b97fd3d MN |
3170 | return status; |
3171 | } | |
3172 | ||
1775fd3e DQ |
3173 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3174 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3175 | { |
3176 | struct nfs4_getattr_arg args = { | |
3177 | .fh = fhandle, | |
3178 | .bitmask = server->attr_bitmask, | |
3179 | }; | |
3180 | struct nfs4_getattr_res res = { | |
3181 | .fattr = fattr, | |
1775fd3e | 3182 | .label = label, |
1da177e4 LT |
3183 | .server = server, |
3184 | }; | |
3185 | struct rpc_message msg = { | |
3186 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3187 | .rpc_argp = &args, | |
3188 | .rpc_resp = &res, | |
3189 | }; | |
aa9c2669 DQ |
3190 | |
3191 | args.bitmask = nfs4_bitmask(server, label); | |
3192 | ||
0e574af1 | 3193 | nfs_fattr_init(fattr); |
7c513058 | 3194 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3195 | } |
3196 | ||
1775fd3e DQ |
3197 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3198 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3199 | { |
3200 | struct nfs4_exception exception = { }; | |
3201 | int err; | |
3202 | do { | |
b5f875a9 TM |
3203 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3204 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3205 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3206 | &exception); |
3207 | } while (exception.retry); | |
3208 | return err; | |
3209 | } | |
3210 | ||
3211 | /* | |
3212 | * The file is not closed if it is opened due to the a request to change | |
3213 | * the size of the file. The open call will not be needed once the | |
3214 | * VFS layer lookup-intents are implemented. | |
3215 | * | |
3216 | * Close is called when the inode is destroyed. | |
3217 | * If we haven't opened the file for O_WRONLY, we | |
3218 | * need to in the size_change case to obtain a stateid. | |
3219 | * | |
3220 | * Got race? | |
3221 | * Because OPEN is always done by name in nfsv4, it is | |
3222 | * possible that we opened a different file by the same | |
3223 | * name. We can recognize this race condition, but we | |
3224 | * can't do anything about it besides returning an error. | |
3225 | * | |
3226 | * This will be fixed with VFS changes (lookup-intent). | |
3227 | */ | |
3228 | static int | |
3229 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3230 | struct iattr *sattr) | |
3231 | { | |
08e9eac4 | 3232 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3233 | struct rpc_cred *cred = NULL; |
d530838b | 3234 | struct nfs4_state *state = NULL; |
14c43f76 | 3235 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3236 | int status; |
3237 | ||
88ac815c PT |
3238 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3239 | sattr->ia_valid & ATTR_SIZE && | |
3240 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3241 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3242 | |
0e574af1 | 3243 | nfs_fattr_init(fattr); |
1da177e4 | 3244 | |
2669940d AA |
3245 | /* Deal with open(O_TRUNC) */ |
3246 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3247 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3248 | |
3249 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3250 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3251 | return 0; |
3252 | ||
d530838b | 3253 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3254 | if (sattr->ia_valid & ATTR_FILE) { |
3255 | struct nfs_open_context *ctx; | |
3256 | ||
3257 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3258 | if (ctx) { |
3259 | cred = ctx->cred; | |
3260 | state = ctx->state; | |
3261 | } | |
659bfcd6 | 3262 | } |
08e9eac4 | 3263 | |
14c43f76 DQ |
3264 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3265 | if (IS_ERR(label)) | |
3266 | return PTR_ERR(label); | |
3267 | ||
3268 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3269 | if (status == 0) { |
65e4308d | 3270 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3271 | nfs_setsecurity(inode, fattr, label); |
3272 | } | |
14c43f76 | 3273 | nfs4_label_free(label); |
1da177e4 LT |
3274 | return status; |
3275 | } | |
3276 | ||
0c2e53f1 TM |
3277 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3278 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3279 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3280 | { |
0c2e53f1 | 3281 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3282 | int status; |
3283 | struct nfs4_lookup_arg args = { | |
3284 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3285 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3286 | .name = name, |
3287 | }; | |
3288 | struct nfs4_lookup_res res = { | |
3289 | .server = server, | |
3290 | .fattr = fattr, | |
aa9c2669 | 3291 | .label = label, |
2b3de441 DH |
3292 | .fh = fhandle, |
3293 | }; | |
3294 | struct rpc_message msg = { | |
3295 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3296 | .rpc_argp = &args, | |
3297 | .rpc_resp = &res, | |
3298 | }; | |
3299 | ||
aa9c2669 DQ |
3300 | args.bitmask = nfs4_bitmask(server, label); |
3301 | ||
2b3de441 DH |
3302 | nfs_fattr_init(fattr); |
3303 | ||
1da177e4 | 3304 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3305 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3306 | dprintk("NFS reply lookup: %d\n", status); |
3307 | return status; | |
3308 | } | |
3309 | ||
72de53ec | 3310 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3311 | { |
7ebb9315 | 3312 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3313 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3314 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3315 | fattr->nlink = 2; | |
3316 | } | |
3317 | ||
72de53ec BS |
3318 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3319 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3320 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3321 | { |
3322 | struct nfs4_exception exception = { }; | |
72de53ec | 3323 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3324 | int err; |
3325 | do { | |
1775fd3e | 3326 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3327 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3328 | switch (err) { |
08ef7bd3 | 3329 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3330 | err = -ENOENT; |
3331 | goto out; | |
0c2e53f1 | 3332 | case -NFS4ERR_MOVED: |
f05d147f | 3333 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3334 | goto out; |
0c2e53f1 | 3335 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3336 | err = -EPERM; |
3337 | if (client != *clnt) | |
3338 | goto out; | |
66b06860 | 3339 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3340 | if (IS_ERR(client)) |
3341 | return PTR_ERR(client); | |
3342 | ||
3343 | exception.retry = 1; | |
3344 | break; | |
3345 | default: | |
3346 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3347 | } |
1da177e4 | 3348 | } while (exception.retry); |
72de53ec BS |
3349 | |
3350 | out: | |
3351 | if (err == 0) | |
3352 | *clnt = client; | |
3353 | else if (client != *clnt) | |
3354 | rpc_shutdown_client(client); | |
3355 | ||
1da177e4 LT |
3356 | return err; |
3357 | } | |
3358 | ||
80a16b21 | 3359 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3360 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3361 | struct nfs4_label *label) | |
72de53ec BS |
3362 | { |
3363 | int status; | |
3364 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3365 | ||
1775fd3e | 3366 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3367 | if (client != NFS_CLIENT(dir)) { |
3368 | rpc_shutdown_client(client); | |
3369 | nfs_fixup_secinfo_attributes(fattr); | |
3370 | } | |
3371 | return status; | |
3372 | } | |
3373 | ||
f05d147f BS |
3374 | struct rpc_clnt * |
3375 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3376 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3377 | { | |
b72888cb | 3378 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3379 | int status; |
f05d147f | 3380 | |
1775fd3e | 3381 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3382 | if (status < 0) |
f05d147f | 3383 | return ERR_PTR(status); |
b72888cb | 3384 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3385 | } |
3386 | ||
1da177e4 LT |
3387 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3388 | { | |
76b32999 | 3389 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3390 | struct nfs4_accessargs args = { |
3391 | .fh = NFS_FH(inode), | |
a4980e78 | 3392 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3393 | }; |
3394 | struct nfs4_accessres res = { | |
3395 | .server = server, | |
1da177e4 | 3396 | }; |
1da177e4 LT |
3397 | struct rpc_message msg = { |
3398 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3399 | .rpc_argp = &args, | |
3400 | .rpc_resp = &res, | |
3401 | .rpc_cred = entry->cred, | |
3402 | }; | |
3403 | int mode = entry->mask; | |
aa9c2669 | 3404 | int status = 0; |
1da177e4 LT |
3405 | |
3406 | /* | |
3407 | * Determine which access bits we want to ask for... | |
3408 | */ | |
3409 | if (mode & MAY_READ) | |
3410 | args.access |= NFS4_ACCESS_READ; | |
3411 | if (S_ISDIR(inode->i_mode)) { | |
3412 | if (mode & MAY_WRITE) | |
3413 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3414 | if (mode & MAY_EXEC) | |
3415 | args.access |= NFS4_ACCESS_LOOKUP; | |
3416 | } else { | |
3417 | if (mode & MAY_WRITE) | |
3418 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3419 | if (mode & MAY_EXEC) | |
3420 | args.access |= NFS4_ACCESS_EXECUTE; | |
3421 | } | |
c407d41a TM |
3422 | |
3423 | res.fattr = nfs_alloc_fattr(); | |
3424 | if (res.fattr == NULL) | |
3425 | return -ENOMEM; | |
3426 | ||
7c513058 | 3427 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3428 | if (!status) { |
6168f62c | 3429 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3430 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3431 | } |
c407d41a | 3432 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3433 | return status; |
3434 | } | |
3435 | ||
3436 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3437 | { | |
3438 | struct nfs4_exception exception = { }; | |
3439 | int err; | |
3440 | do { | |
c1578b76 TM |
3441 | err = _nfs4_proc_access(inode, entry); |
3442 | trace_nfs4_access(inode, err); | |
3443 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3444 | &exception); |
3445 | } while (exception.retry); | |
3446 | return err; | |
3447 | } | |
3448 | ||
3449 | /* | |
3450 | * TODO: For the time being, we don't try to get any attributes | |
3451 | * along with any of the zero-copy operations READ, READDIR, | |
3452 | * READLINK, WRITE. | |
3453 | * | |
3454 | * In the case of the first three, we want to put the GETATTR | |
3455 | * after the read-type operation -- this is because it is hard | |
3456 | * to predict the length of a GETATTR response in v4, and thus | |
3457 | * align the READ data correctly. This means that the GETATTR | |
3458 | * may end up partially falling into the page cache, and we should | |
3459 | * shift it into the 'tail' of the xdr_buf before processing. | |
3460 | * To do this efficiently, we need to know the total length | |
3461 | * of data received, which doesn't seem to be available outside | |
3462 | * of the RPC layer. | |
3463 | * | |
3464 | * In the case of WRITE, we also want to put the GETATTR after | |
3465 | * the operation -- in this case because we want to make sure | |
140150db | 3466 | * we get the post-operation mtime and size. |
1da177e4 LT |
3467 | * |
3468 | * Both of these changes to the XDR layer would in fact be quite | |
3469 | * minor, but I decided to leave them for a subsequent patch. | |
3470 | */ | |
3471 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3472 | unsigned int pgbase, unsigned int pglen) | |
3473 | { | |
3474 | struct nfs4_readlink args = { | |
3475 | .fh = NFS_FH(inode), | |
3476 | .pgbase = pgbase, | |
3477 | .pglen = pglen, | |
3478 | .pages = &page, | |
3479 | }; | |
f50c7000 | 3480 | struct nfs4_readlink_res res; |
1da177e4 LT |
3481 | struct rpc_message msg = { |
3482 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3483 | .rpc_argp = &args, | |
f50c7000 | 3484 | .rpc_resp = &res, |
1da177e4 LT |
3485 | }; |
3486 | ||
7c513058 | 3487 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3488 | } |
3489 | ||
3490 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3491 | unsigned int pgbase, unsigned int pglen) | |
3492 | { | |
3493 | struct nfs4_exception exception = { }; | |
3494 | int err; | |
3495 | do { | |
c1578b76 TM |
3496 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3497 | trace_nfs4_readlink(inode, err); | |
3498 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3499 | &exception); |
3500 | } while (exception.retry); | |
3501 | return err; | |
3502 | } | |
3503 | ||
1da177e4 | 3504 | /* |
8867fe58 | 3505 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3506 | */ |
1da177e4 LT |
3507 | static int |
3508 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3509 | int flags) |
1da177e4 | 3510 | { |
aa9c2669 | 3511 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3512 | struct nfs_open_context *ctx; |
1da177e4 | 3513 | struct nfs4_state *state; |
5bc2afc2 | 3514 | int opened = 0; |
1da177e4 LT |
3515 | int status = 0; |
3516 | ||
8867fe58 MS |
3517 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3518 | if (IS_ERR(ctx)) | |
3519 | return PTR_ERR(ctx); | |
3520 | ||
aa9c2669 DQ |
3521 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3522 | ||
a8a5da99 | 3523 | sattr->ia_mode &= ~current_umask(); |
5bc2afc2 | 3524 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); |
1da177e4 LT |
3525 | if (IS_ERR(state)) { |
3526 | status = PTR_ERR(state); | |
c0204fd2 | 3527 | goto out; |
1da177e4 | 3528 | } |
1da177e4 | 3529 | out: |
aa9c2669 | 3530 | nfs4_label_release_security(ilabel); |
8867fe58 | 3531 | put_nfs_open_context(ctx); |
1da177e4 LT |
3532 | return status; |
3533 | } | |
3534 | ||
3535 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3536 | { | |
16e42959 | 3537 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3538 | struct nfs_removeargs args = { |
1da177e4 | 3539 | .fh = NFS_FH(dir), |
26fe5750 | 3540 | .name = *name, |
16e42959 | 3541 | }; |
4fdc17b2 | 3542 | struct nfs_removeres res = { |
16e42959 | 3543 | .server = server, |
1da177e4 | 3544 | }; |
1da177e4 | 3545 | struct rpc_message msg = { |
4fdc17b2 TM |
3546 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3547 | .rpc_argp = &args, | |
3548 | .rpc_resp = &res, | |
1da177e4 | 3549 | }; |
778d2817 | 3550 | int status; |
1da177e4 | 3551 | |
7c513058 | 3552 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3553 | if (status == 0) |
16e42959 | 3554 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3555 | return status; |
3556 | } | |
3557 | ||
3558 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3559 | { | |
3560 | struct nfs4_exception exception = { }; | |
3561 | int err; | |
3562 | do { | |
078ea3df TM |
3563 | err = _nfs4_proc_remove(dir, name); |
3564 | trace_nfs4_remove(dir, name, err); | |
3565 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3566 | &exception); |
3567 | } while (exception.retry); | |
3568 | return err; | |
3569 | } | |
3570 | ||
e4eff1a6 | 3571 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3572 | { |
e4eff1a6 TM |
3573 | struct nfs_server *server = NFS_SERVER(dir); |
3574 | struct nfs_removeargs *args = msg->rpc_argp; | |
3575 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3576 | |
e4eff1a6 | 3577 | res->server = server; |
1da177e4 | 3578 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3579 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3580 | |
3581 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3582 | } |
3583 | ||
34e137cc BS |
3584 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3585 | { | |
d9afbd1b TM |
3586 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3587 | &data->args.seq_args, | |
3588 | &data->res.seq_res, | |
3589 | task); | |
1da177e4 LT |
3590 | } |
3591 | ||
e4eff1a6 | 3592 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3593 | { |
078ea3df TM |
3594 | struct nfs_unlinkdata *data = task->tk_calldata; |
3595 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3596 | |
14516c3a TM |
3597 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3598 | return 0; | |
8478eaa1 N |
3599 | if (nfs4_async_handle_error(task, res->server, NULL, |
3600 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3601 | return 0; |
3602 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3603 | return 1; |
1da177e4 LT |
3604 | } |
3605 | ||
d3d4152a JL |
3606 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3607 | { | |
3608 | struct nfs_server *server = NFS_SERVER(dir); | |
3609 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3610 | struct nfs_renameres *res = msg->rpc_resp; | |
3611 | ||
3612 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3613 | res->server = server; |
a9c92d6b | 3614 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3615 | } |
3616 | ||
c6bfa1a1 BS |
3617 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3618 | { | |
d9afbd1b TM |
3619 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3620 | &data->args.seq_args, | |
3621 | &data->res.seq_res, | |
3622 | task); | |
d3d4152a JL |
3623 | } |
3624 | ||
3625 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3626 | struct inode *new_dir) | |
3627 | { | |
fbc6f7c2 TM |
3628 | struct nfs_renamedata *data = task->tk_calldata; |
3629 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3630 | |
3631 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3632 | return 0; | |
8478eaa1 | 3633 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3634 | return 0; |
3635 | ||
3636 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3637 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3638 | return 1; |
3639 | } | |
3640 | ||
1da177e4 LT |
3641 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3642 | { | |
91ba2eee | 3643 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3644 | struct nfs4_link_arg arg = { |
3645 | .fh = NFS_FH(inode), | |
3646 | .dir_fh = NFS_FH(dir), | |
3647 | .name = name, | |
91ba2eee TM |
3648 | .bitmask = server->attr_bitmask, |
3649 | }; | |
91ba2eee TM |
3650 | struct nfs4_link_res res = { |
3651 | .server = server, | |
1775fd3e | 3652 | .label = NULL, |
1da177e4 | 3653 | }; |
1da177e4 LT |
3654 | struct rpc_message msg = { |
3655 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3656 | .rpc_argp = &arg, | |
91ba2eee | 3657 | .rpc_resp = &res, |
1da177e4 | 3658 | }; |
136f2627 TM |
3659 | int status = -ENOMEM; |
3660 | ||
3661 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3662 | if (res.fattr == NULL) |
136f2627 | 3663 | goto out; |
1da177e4 | 3664 | |
14c43f76 DQ |
3665 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3666 | if (IS_ERR(res.label)) { | |
3667 | status = PTR_ERR(res.label); | |
3668 | goto out; | |
3669 | } | |
aa9c2669 | 3670 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3671 | |
7c513058 | 3672 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3673 | if (!status) { |
3674 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3675 | status = nfs_post_op_update_inode(inode, res.fattr); |
3676 | if (!status) | |
3677 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3678 | } |
14c43f76 DQ |
3679 | |
3680 | ||
3681 | nfs4_label_free(res.label); | |
3682 | ||
136f2627 | 3683 | out: |
136f2627 | 3684 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3685 | return status; |
3686 | } | |
3687 | ||
3688 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3689 | { | |
3690 | struct nfs4_exception exception = { }; | |
3691 | int err; | |
3692 | do { | |
3693 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3694 | _nfs4_proc_link(inode, dir, name), | |
3695 | &exception); | |
3696 | } while (exception.retry); | |
3697 | return err; | |
3698 | } | |
3699 | ||
57dc9a57 TM |
3700 | struct nfs4_createdata { |
3701 | struct rpc_message msg; | |
3702 | struct nfs4_create_arg arg; | |
3703 | struct nfs4_create_res res; | |
3704 | struct nfs_fh fh; | |
3705 | struct nfs_fattr fattr; | |
1775fd3e | 3706 | struct nfs4_label *label; |
57dc9a57 TM |
3707 | }; |
3708 | ||
3709 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3710 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3711 | { | |
3712 | struct nfs4_createdata *data; | |
3713 | ||
3714 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3715 | if (data != NULL) { | |
3716 | struct nfs_server *server = NFS_SERVER(dir); | |
3717 | ||
14c43f76 DQ |
3718 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3719 | if (IS_ERR(data->label)) | |
3720 | goto out_free; | |
3721 | ||
57dc9a57 TM |
3722 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3723 | data->msg.rpc_argp = &data->arg; | |
3724 | data->msg.rpc_resp = &data->res; | |
3725 | data->arg.dir_fh = NFS_FH(dir); | |
3726 | data->arg.server = server; | |
3727 | data->arg.name = name; | |
3728 | data->arg.attrs = sattr; | |
3729 | data->arg.ftype = ftype; | |
aa9c2669 | 3730 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3731 | data->res.server = server; |
3732 | data->res.fh = &data->fh; | |
3733 | data->res.fattr = &data->fattr; | |
1775fd3e | 3734 | data->res.label = data->label; |
57dc9a57 | 3735 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3736 | } |
3737 | return data; | |
14c43f76 DQ |
3738 | out_free: |
3739 | kfree(data); | |
3740 | return NULL; | |
57dc9a57 TM |
3741 | } |
3742 | ||
3743 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3744 | { | |
7c513058 | 3745 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3746 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3747 | if (status == 0) { |
3748 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3749 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3750 | } |
3751 | return status; | |
3752 | } | |
3753 | ||
3754 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3755 | { | |
14c43f76 | 3756 | nfs4_label_free(data->label); |
57dc9a57 TM |
3757 | kfree(data); |
3758 | } | |
3759 | ||
4f390c15 | 3760 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3761 | struct page *page, unsigned int len, struct iattr *sattr, |
3762 | struct nfs4_label *label) | |
1da177e4 | 3763 | { |
57dc9a57 TM |
3764 | struct nfs4_createdata *data; |
3765 | int status = -ENAMETOOLONG; | |
1da177e4 | 3766 | |
94a6d753 | 3767 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3768 | goto out; |
4f390c15 | 3769 | |
57dc9a57 TM |
3770 | status = -ENOMEM; |
3771 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3772 | if (data == NULL) | |
3773 | goto out; | |
3774 | ||
3775 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3776 | data->arg.u.symlink.pages = &page; | |
3777 | data->arg.u.symlink.len = len; | |
1775fd3e | 3778 | data->arg.label = label; |
1da177e4 | 3779 | |
57dc9a57 TM |
3780 | status = nfs4_do_create(dir, dentry, data); |
3781 | ||
3782 | nfs4_free_createdata(data); | |
3783 | out: | |
1da177e4 LT |
3784 | return status; |
3785 | } | |
3786 | ||
4f390c15 | 3787 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3788 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3789 | { |
3790 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3791 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3792 | int err; |
aa9c2669 DQ |
3793 | |
3794 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3795 | ||
1da177e4 | 3796 | do { |
078ea3df TM |
3797 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3798 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3799 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3800 | &exception); |
3801 | } while (exception.retry); | |
aa9c2669 DQ |
3802 | |
3803 | nfs4_label_release_security(label); | |
1da177e4 LT |
3804 | return err; |
3805 | } | |
3806 | ||
3807 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3808 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3809 | { |
57dc9a57 TM |
3810 | struct nfs4_createdata *data; |
3811 | int status = -ENOMEM; | |
1da177e4 | 3812 | |
57dc9a57 TM |
3813 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3814 | if (data == NULL) | |
3815 | goto out; | |
3816 | ||
1775fd3e | 3817 | data->arg.label = label; |
57dc9a57 TM |
3818 | status = nfs4_do_create(dir, dentry, data); |
3819 | ||
3820 | nfs4_free_createdata(data); | |
3821 | out: | |
1da177e4 LT |
3822 | return status; |
3823 | } | |
3824 | ||
3825 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3826 | struct iattr *sattr) | |
3827 | { | |
3828 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3829 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3830 | int err; |
a8a5da99 | 3831 | |
aa9c2669 DQ |
3832 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3833 | ||
a8a5da99 | 3834 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3835 | do { |
078ea3df TM |
3836 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3837 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3838 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3839 | &exception); |
3840 | } while (exception.retry); | |
aa9c2669 DQ |
3841 | nfs4_label_release_security(label); |
3842 | ||
1da177e4 LT |
3843 | return err; |
3844 | } | |
3845 | ||
3846 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3847 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3848 | { |
3849 | struct inode *dir = dentry->d_inode; | |
3850 | struct nfs4_readdir_arg args = { | |
3851 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3852 | .pages = pages, |
1da177e4 LT |
3853 | .pgbase = 0, |
3854 | .count = count, | |
96d25e53 | 3855 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3856 | .plus = plus, |
1da177e4 LT |
3857 | }; |
3858 | struct nfs4_readdir_res res; | |
3859 | struct rpc_message msg = { | |
3860 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3861 | .rpc_argp = &args, | |
3862 | .rpc_resp = &res, | |
3863 | .rpc_cred = cred, | |
3864 | }; | |
3865 | int status; | |
3866 | ||
6de1472f AV |
3867 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
3868 | dentry, | |
eadf4598 | 3869 | (unsigned long long)cookie); |
c3f52af3 | 3870 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3871 | res.pgbase = args.pgbase; |
7c513058 | 3872 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3873 | if (status >= 0) { |
c3f52af3 | 3874 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3875 | status += args.pgbase; |
3876 | } | |
c4812998 TM |
3877 | |
3878 | nfs_invalidate_atime(dir); | |
3879 | ||
3110ff80 | 3880 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3881 | return status; |
3882 | } | |
3883 | ||
3884 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3885 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3886 | { |
3887 | struct nfs4_exception exception = { }; | |
3888 | int err; | |
3889 | do { | |
c1578b76 TM |
3890 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3891 | pages, count, plus); | |
3892 | trace_nfs4_readdir(dentry->d_inode, err); | |
3893 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3894 | &exception); |
3895 | } while (exception.retry); | |
3896 | return err; | |
3897 | } | |
3898 | ||
3899 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3900 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3901 | { |
57dc9a57 TM |
3902 | struct nfs4_createdata *data; |
3903 | int mode = sattr->ia_mode; | |
3904 | int status = -ENOMEM; | |
1da177e4 | 3905 | |
57dc9a57 TM |
3906 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3907 | if (data == NULL) | |
3908 | goto out; | |
3909 | ||
1da177e4 | 3910 | if (S_ISFIFO(mode)) |
57dc9a57 | 3911 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3912 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3913 | data->arg.ftype = NF4BLK; |
3914 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3915 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3916 | } |
3917 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3918 | data->arg.ftype = NF4CHR; |
3919 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3920 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3921 | } else if (!S_ISSOCK(mode)) { |
3922 | status = -EINVAL; | |
3923 | goto out_free; | |
1da177e4 | 3924 | } |
1775fd3e | 3925 | |
aa9c2669 | 3926 | data->arg.label = label; |
57dc9a57 | 3927 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3928 | out_free: |
57dc9a57 TM |
3929 | nfs4_free_createdata(data); |
3930 | out: | |
1da177e4 LT |
3931 | return status; |
3932 | } | |
3933 | ||
3934 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3935 | struct iattr *sattr, dev_t rdev) | |
3936 | { | |
3937 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3938 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3939 | int err; |
a8a5da99 | 3940 | |
aa9c2669 DQ |
3941 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3942 | ||
a8a5da99 | 3943 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3944 | do { |
078ea3df TM |
3945 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3946 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3947 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3948 | &exception); |
3949 | } while (exception.retry); | |
aa9c2669 DQ |
3950 | |
3951 | nfs4_label_release_security(label); | |
3952 | ||
1da177e4 LT |
3953 | return err; |
3954 | } | |
3955 | ||
3956 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3957 | struct nfs_fsstat *fsstat) | |
3958 | { | |
3959 | struct nfs4_statfs_arg args = { | |
3960 | .fh = fhandle, | |
3961 | .bitmask = server->attr_bitmask, | |
3962 | }; | |
24ad148a BH |
3963 | struct nfs4_statfs_res res = { |
3964 | .fsstat = fsstat, | |
3965 | }; | |
1da177e4 LT |
3966 | struct rpc_message msg = { |
3967 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3968 | .rpc_argp = &args, | |
24ad148a | 3969 | .rpc_resp = &res, |
1da177e4 LT |
3970 | }; |
3971 | ||
0e574af1 | 3972 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3973 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3974 | } |
3975 | ||
3976 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3977 | { | |
3978 | struct nfs4_exception exception = { }; | |
3979 | int err; | |
3980 | do { | |
3981 | err = nfs4_handle_exception(server, | |
3982 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3983 | &exception); | |
3984 | } while (exception.retry); | |
3985 | return err; | |
3986 | } | |
3987 | ||
3988 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3989 | struct nfs_fsinfo *fsinfo) | |
3990 | { | |
3991 | struct nfs4_fsinfo_arg args = { | |
3992 | .fh = fhandle, | |
3993 | .bitmask = server->attr_bitmask, | |
3994 | }; | |
3dda5e43 BH |
3995 | struct nfs4_fsinfo_res res = { |
3996 | .fsinfo = fsinfo, | |
3997 | }; | |
1da177e4 LT |
3998 | struct rpc_message msg = { |
3999 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4000 | .rpc_argp = &args, | |
3dda5e43 | 4001 | .rpc_resp = &res, |
1da177e4 LT |
4002 | }; |
4003 | ||
7c513058 | 4004 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4005 | } |
4006 | ||
4007 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4008 | { | |
4009 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4010 | unsigned long now = jiffies; |
1da177e4 LT |
4011 | int err; |
4012 | ||
4013 | do { | |
83ca7f5a | 4014 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4015 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4016 | if (err == 0) { |
4017 | struct nfs_client *clp = server->nfs_client; | |
4018 | ||
4019 | spin_lock(&clp->cl_lock); | |
4020 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4021 | clp->cl_last_renewal = now; | |
4022 | spin_unlock(&clp->cl_lock); | |
4023 | break; | |
4024 | } | |
4025 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4026 | } while (exception.retry); |
4027 | return err; | |
4028 | } | |
4029 | ||
4030 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4031 | { | |
e38eb650 BS |
4032 | int error; |
4033 | ||
0e574af1 | 4034 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4035 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4036 | if (error == 0) { |
4037 | /* block layout checks this! */ | |
4038 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4039 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4040 | } |
e38eb650 BS |
4041 | |
4042 | return error; | |
1da177e4 LT |
4043 | } |
4044 | ||
4045 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4046 | struct nfs_pathconf *pathconf) | |
4047 | { | |
4048 | struct nfs4_pathconf_arg args = { | |
4049 | .fh = fhandle, | |
4050 | .bitmask = server->attr_bitmask, | |
4051 | }; | |
d45b2989 BH |
4052 | struct nfs4_pathconf_res res = { |
4053 | .pathconf = pathconf, | |
4054 | }; | |
1da177e4 LT |
4055 | struct rpc_message msg = { |
4056 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4057 | .rpc_argp = &args, | |
d45b2989 | 4058 | .rpc_resp = &res, |
1da177e4 LT |
4059 | }; |
4060 | ||
4061 | /* None of the pathconf attributes are mandatory to implement */ | |
4062 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4063 | memset(pathconf, 0, sizeof(*pathconf)); | |
4064 | return 0; | |
4065 | } | |
4066 | ||
0e574af1 | 4067 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4068 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4069 | } |
4070 | ||
4071 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4072 | struct nfs_pathconf *pathconf) | |
4073 | { | |
4074 | struct nfs4_exception exception = { }; | |
4075 | int err; | |
4076 | ||
4077 | do { | |
4078 | err = nfs4_handle_exception(server, | |
4079 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4080 | &exception); | |
4081 | } while (exception.retry); | |
4082 | return err; | |
4083 | } | |
4084 | ||
5521abfd | 4085 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4086 | const struct nfs_open_context *ctx, |
4087 | const struct nfs_lock_context *l_ctx, | |
4088 | fmode_t fmode) | |
4089 | { | |
4090 | const struct nfs_lockowner *lockowner = NULL; | |
4091 | ||
4092 | if (l_ctx != NULL) | |
4093 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4094 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4095 | } |
4096 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4097 | ||
5521abfd TM |
4098 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4099 | const struct nfs_open_context *ctx, | |
4100 | const struct nfs_lock_context *l_ctx, | |
4101 | fmode_t fmode) | |
4102 | { | |
4103 | nfs4_stateid current_stateid; | |
4104 | ||
e1253be0 TM |
4105 | /* If the current stateid represents a lost lock, then exit */ |
4106 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4107 | return true; | |
5521abfd TM |
4108 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4109 | } | |
4110 | ||
4111 | static bool nfs4_error_stateid_expired(int err) | |
4112 | { | |
4113 | switch (err) { | |
4114 | case -NFS4ERR_DELEG_REVOKED: | |
4115 | case -NFS4ERR_ADMIN_REVOKED: | |
4116 | case -NFS4ERR_BAD_STATEID: | |
4117 | case -NFS4ERR_STALE_STATEID: | |
4118 | case -NFS4ERR_OLD_STATEID: | |
4119 | case -NFS4ERR_OPENMODE: | |
4120 | case -NFS4ERR_EXPIRED: | |
4121 | return true; | |
4122 | } | |
4123 | return false; | |
4124 | } | |
4125 | ||
d45f60c6 | 4126 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4127 | { |
d45f60c6 | 4128 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4129 | } |
4130 | ||
d45f60c6 | 4131 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4132 | { |
d45f60c6 | 4133 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4134 | |
d45f60c6 WAA |
4135 | trace_nfs4_read(hdr, task->tk_status); |
4136 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4137 | hdr->args.context->state, |
4138 | NULL) == -EAGAIN) { | |
d00c5d43 | 4139 | rpc_restart_call_prepare(task); |
ec06c096 | 4140 | return -EAGAIN; |
1da177e4 | 4141 | } |
8850df99 | 4142 | |
d45f60c6 | 4143 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4144 | if (task->tk_status > 0) |
d45f60c6 | 4145 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4146 | return 0; |
1da177e4 LT |
4147 | } |
4148 | ||
5521abfd | 4149 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4150 | struct nfs_pgio_args *args) |
5521abfd TM |
4151 | { |
4152 | ||
4153 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4154 | nfs4_stateid_is_current(&args->stateid, | |
4155 | args->context, | |
4156 | args->lock_context, | |
4157 | FMODE_READ)) | |
4158 | return false; | |
4159 | rpc_restart_call_prepare(task); | |
4160 | return true; | |
4161 | } | |
4162 | ||
d45f60c6 | 4163 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4164 | { |
4165 | ||
4166 | dprintk("--> %s\n", __func__); | |
4167 | ||
d45f60c6 | 4168 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4169 | return -EAGAIN; |
d45f60c6 | 4170 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4171 | return -EAGAIN; |
d45f60c6 WAA |
4172 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4173 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4174 | } |
4175 | ||
d45f60c6 WAA |
4176 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4177 | struct rpc_message *msg) | |
1da177e4 | 4178 | { |
d45f60c6 WAA |
4179 | hdr->timestamp = jiffies; |
4180 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4181 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4182 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4183 | } |
4184 | ||
d45f60c6 WAA |
4185 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4186 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4187 | { |
d45f60c6 WAA |
4188 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4189 | &hdr->args.seq_args, | |
4190 | &hdr->res.seq_res, | |
9b206149 | 4191 | task)) |
ef1820f9 | 4192 | return 0; |
d45f60c6 WAA |
4193 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4194 | hdr->args.lock_context, | |
4195 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4196 | return -EIO; |
d45f60c6 | 4197 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4198 | return -EIO; |
4199 | return 0; | |
1da177e4 LT |
4200 | } |
4201 | ||
d45f60c6 WAA |
4202 | static int nfs4_write_done_cb(struct rpc_task *task, |
4203 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4204 | { |
d45f60c6 | 4205 | struct inode *inode = hdr->inode; |
8478eaa1 | 4206 | |
d45f60c6 WAA |
4207 | trace_nfs4_write(hdr, task->tk_status); |
4208 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4209 | hdr->args.context->state, |
4210 | NULL) == -EAGAIN) { | |
d00c5d43 | 4211 | rpc_restart_call_prepare(task); |
788e7a89 | 4212 | return -EAGAIN; |
1da177e4 | 4213 | } |
4f9838c7 | 4214 | if (task->tk_status >= 0) { |
d45f60c6 WAA |
4215 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
4216 | nfs_post_op_update_inode_force_wcc(inode, &hdr->fattr); | |
4f9838c7 | 4217 | } |
788e7a89 | 4218 | return 0; |
1da177e4 LT |
4219 | } |
4220 | ||
5521abfd | 4221 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4222 | struct nfs_pgio_args *args) |
5521abfd TM |
4223 | { |
4224 | ||
4225 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4226 | nfs4_stateid_is_current(&args->stateid, | |
4227 | args->context, | |
4228 | args->lock_context, | |
4229 | FMODE_WRITE)) | |
4230 | return false; | |
4231 | rpc_restart_call_prepare(task); | |
4232 | return true; | |
4233 | } | |
4234 | ||
d45f60c6 | 4235 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4236 | { |
d45f60c6 | 4237 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4238 | return -EAGAIN; |
d45f60c6 | 4239 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4240 | return -EAGAIN; |
d45f60c6 WAA |
4241 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4242 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4243 | } |
4244 | ||
5a37f851 | 4245 | static |
d45f60c6 | 4246 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4247 | { |
5a37f851 | 4248 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4249 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4250 | return false; |
4251 | /* Otherwise, request attributes if and only if we don't hold | |
4252 | * a delegation | |
4253 | */ | |
011e2a7f | 4254 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4255 | } |
a69aef14 | 4256 | |
d45f60c6 WAA |
4257 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4258 | struct rpc_message *msg) | |
1da177e4 | 4259 | { |
d45f60c6 | 4260 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4261 | |
d45f60c6 WAA |
4262 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4263 | hdr->args.bitmask = NULL; | |
4264 | hdr->res.fattr = NULL; | |
7ffd1064 | 4265 | } else |
d45f60c6 | 4266 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4267 | |
d45f60c6 WAA |
4268 | if (!hdr->pgio_done_cb) |
4269 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4270 | hdr->res.server = server; | |
4271 | hdr->timestamp = jiffies; | |
1da177e4 | 4272 | |
bdc7f021 | 4273 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4274 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4275 | } |
4276 | ||
0b7c0153 | 4277 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4278 | { |
d9afbd1b TM |
4279 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4280 | &data->args.seq_args, | |
4281 | &data->res.seq_res, | |
4282 | task); | |
1da177e4 LT |
4283 | } |
4284 | ||
0b7c0153 | 4285 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4286 | { |
1da177e4 | 4287 | struct inode *inode = data->inode; |
14516c3a | 4288 | |
cc668ab3 | 4289 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4290 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4291 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4292 | rpc_restart_call_prepare(task); |
788e7a89 | 4293 | return -EAGAIN; |
1da177e4 | 4294 | } |
788e7a89 | 4295 | return 0; |
1da177e4 LT |
4296 | } |
4297 | ||
0b7c0153 | 4298 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4299 | { |
4300 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4301 | return -EAGAIN; | |
0b7c0153 | 4302 | return data->commit_done_cb(task, data); |
5f452431 FI |
4303 | } |
4304 | ||
0b7c0153 | 4305 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4306 | { |
788e7a89 | 4307 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4308 | |
0b7c0153 FI |
4309 | if (data->commit_done_cb == NULL) |
4310 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4311 | data->res.server = server; |
bdc7f021 | 4312 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4313 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4314 | } |
4315 | ||
9bc4e3ca CL |
4316 | struct nfs4_renewdata { |
4317 | struct nfs_client *client; | |
4318 | unsigned long timestamp; | |
4319 | }; | |
4320 | ||
1da177e4 LT |
4321 | /* |
4322 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4323 | * standalone procedure for queueing an asynchronous RENEW. | |
4324 | */ | |
9bc4e3ca | 4325 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4326 | { |
9bc4e3ca CL |
4327 | struct nfs4_renewdata *data = calldata; |
4328 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4329 | |
0851de06 AB |
4330 | if (atomic_read(&clp->cl_count) > 1) |
4331 | nfs4_schedule_state_renewal(clp); | |
4332 | nfs_put_client(clp); | |
9bc4e3ca | 4333 | kfree(data); |
dc96aef9 AB |
4334 | } |
4335 | ||
9bc4e3ca | 4336 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4337 | { |
9bc4e3ca CL |
4338 | struct nfs4_renewdata *data = calldata; |
4339 | struct nfs_client *clp = data->client; | |
4340 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4341 | |
c6d01c6f | 4342 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4343 | switch (task->tk_status) { |
4344 | case 0: | |
4345 | break; | |
4346 | case -NFS4ERR_LEASE_MOVED: | |
4347 | nfs4_schedule_lease_moved_recovery(clp); | |
4348 | break; | |
4349 | default: | |
95baa25c | 4350 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4351 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4352 | return; | |
4353 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4354 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4355 | return; |
4356 | } | |
4357 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4358 | } |
452e9352 | 4359 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4360 | } |
4361 | ||
963d8fe5 TM |
4362 | static const struct rpc_call_ops nfs4_renew_ops = { |
4363 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4364 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4365 | }; |
4366 | ||
2f60ea6b | 4367 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4368 | { |
4369 | struct rpc_message msg = { | |
4370 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4371 | .rpc_argp = clp, | |
b4454fe1 | 4372 | .rpc_cred = cred, |
1da177e4 | 4373 | }; |
9bc4e3ca | 4374 | struct nfs4_renewdata *data; |
1da177e4 | 4375 | |
2f60ea6b TM |
4376 | if (renew_flags == 0) |
4377 | return 0; | |
0851de06 AB |
4378 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4379 | return -EIO; | |
b569ad34 | 4380 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4381 | if (data == NULL) |
4382 | return -ENOMEM; | |
4383 | data->client = clp; | |
4384 | data->timestamp = jiffies; | |
bc7a05ca | 4385 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4386 | &nfs4_renew_ops, data); |
1da177e4 LT |
4387 | } |
4388 | ||
8534d4ec | 4389 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4390 | { |
4391 | struct rpc_message msg = { | |
4392 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4393 | .rpc_argp = clp, | |
b4454fe1 | 4394 | .rpc_cred = cred, |
1da177e4 LT |
4395 | }; |
4396 | unsigned long now = jiffies; | |
4397 | int status; | |
4398 | ||
bc7a05ca | 4399 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4400 | if (status < 0) |
4401 | return status; | |
452e9352 | 4402 | do_renew_lease(clp, now); |
1da177e4 LT |
4403 | return 0; |
4404 | } | |
4405 | ||
aa1870af BF |
4406 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4407 | { | |
7dd7d959 | 4408 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4409 | } |
4410 | ||
21f498c2 TM |
4411 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4412 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4413 | * the stack. |
4414 | */ | |
21f498c2 | 4415 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4416 | |
e9e3d724 NH |
4417 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4418 | struct page **pages, unsigned int *pgbase) | |
4419 | { | |
4420 | struct page *newpage, **spages; | |
4421 | int rc = 0; | |
4422 | size_t len; | |
4423 | spages = pages; | |
4424 | ||
4425 | do { | |
21f498c2 | 4426 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4427 | newpage = alloc_page(GFP_KERNEL); |
4428 | ||
4429 | if (newpage == NULL) | |
4430 | goto unwind; | |
4431 | memcpy(page_address(newpage), buf, len); | |
4432 | buf += len; | |
4433 | buflen -= len; | |
4434 | *pages++ = newpage; | |
4435 | rc++; | |
4436 | } while (buflen != 0); | |
4437 | ||
4438 | return rc; | |
4439 | ||
4440 | unwind: | |
4441 | for(; rc > 0; rc--) | |
4442 | __free_page(spages[rc-1]); | |
4443 | return -ENOMEM; | |
4444 | } | |
4445 | ||
e50a1c2e BF |
4446 | struct nfs4_cached_acl { |
4447 | int cached; | |
4448 | size_t len; | |
3e9d4154 | 4449 | char data[0]; |
e50a1c2e BF |
4450 | }; |
4451 | ||
4452 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4453 | { | |
4454 | struct nfs_inode *nfsi = NFS_I(inode); | |
4455 | ||
4456 | spin_lock(&inode->i_lock); | |
4457 | kfree(nfsi->nfs4_acl); | |
4458 | nfsi->nfs4_acl = acl; | |
4459 | spin_unlock(&inode->i_lock); | |
4460 | } | |
4461 | ||
4462 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4463 | { | |
4464 | nfs4_set_cached_acl(inode, NULL); | |
4465 | } | |
4466 | ||
4467 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4468 | { | |
4469 | struct nfs_inode *nfsi = NFS_I(inode); | |
4470 | struct nfs4_cached_acl *acl; | |
4471 | int ret = -ENOENT; | |
4472 | ||
4473 | spin_lock(&inode->i_lock); | |
4474 | acl = nfsi->nfs4_acl; | |
4475 | if (acl == NULL) | |
4476 | goto out; | |
4477 | if (buf == NULL) /* user is just asking for length */ | |
4478 | goto out_len; | |
4479 | if (acl->cached == 0) | |
4480 | goto out; | |
4481 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4482 | if (acl->len > buflen) | |
4483 | goto out; | |
4484 | memcpy(buf, acl->data, acl->len); | |
4485 | out_len: | |
4486 | ret = acl->len; | |
4487 | out: | |
4488 | spin_unlock(&inode->i_lock); | |
4489 | return ret; | |
4490 | } | |
4491 | ||
5794d21e | 4492 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4493 | { |
4494 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4495 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4496 | |
1f1ea6c2 | 4497 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4498 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4499 | if (acl == NULL) |
4500 | goto out; | |
4501 | acl->cached = 1; | |
5794d21e | 4502 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4503 | } else { |
4504 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4505 | if (acl == NULL) | |
4506 | goto out; | |
4507 | acl->cached = 0; | |
4508 | } | |
4509 | acl->len = acl_len; | |
4510 | out: | |
4511 | nfs4_set_cached_acl(inode, acl); | |
4512 | } | |
4513 | ||
bf118a34 AA |
4514 | /* |
4515 | * The getxattr API returns the required buffer length when called with a | |
4516 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4517 | * the required buf. On a NULL buf, we send a page of data to the server | |
4518 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4519 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4520 | * the cache. If not so, we throw away the page, and cache the required | |
4521 | * length. The next getxattr call will then produce another round trip to | |
4522 | * the server, this time with the input buf of the required size. | |
4523 | */ | |
16b4289c | 4524 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4525 | { |
bf118a34 | 4526 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4527 | struct nfs_getaclargs args = { |
4528 | .fh = NFS_FH(inode), | |
4529 | .acl_pages = pages, | |
4530 | .acl_len = buflen, | |
4531 | }; | |
663c79b3 BH |
4532 | struct nfs_getaclres res = { |
4533 | .acl_len = buflen, | |
4534 | }; | |
aa1870af BF |
4535 | struct rpc_message msg = { |
4536 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4537 | .rpc_argp = &args, | |
663c79b3 | 4538 | .rpc_resp = &res, |
aa1870af | 4539 | }; |
21f498c2 TM |
4540 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4541 | int ret = -ENOMEM, i; | |
aa1870af | 4542 | |
bf118a34 AA |
4543 | /* As long as we're doing a round trip to the server anyway, |
4544 | * let's be prepared for a page of acl data. */ | |
4545 | if (npages == 0) | |
4546 | npages = 1; | |
21f498c2 TM |
4547 | if (npages > ARRAY_SIZE(pages)) |
4548 | return -ERANGE; | |
5a006899 | 4549 | |
bf118a34 AA |
4550 | for (i = 0; i < npages; i++) { |
4551 | pages[i] = alloc_page(GFP_KERNEL); | |
4552 | if (!pages[i]) | |
4553 | goto out_free; | |
e50a1c2e | 4554 | } |
5a006899 SP |
4555 | |
4556 | /* for decoding across pages */ | |
4557 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4558 | if (!res.acl_scratch) | |
4559 | goto out_free; | |
4560 | ||
bf118a34 AA |
4561 | args.acl_len = npages * PAGE_SIZE; |
4562 | args.acl_pgbase = 0; | |
5a006899 | 4563 | |
de040bec | 4564 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4565 | __func__, buf, buflen, npages, args.acl_len); |
4566 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4567 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4568 | if (ret) |
4569 | goto out_free; | |
bf118a34 | 4570 | |
1f1ea6c2 TM |
4571 | /* Handle the case where the passed-in buffer is too short */ |
4572 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4573 | /* Did the user only issue a request for the acl length? */ | |
4574 | if (buf == NULL) | |
4575 | goto out_ok; | |
e50a1c2e | 4576 | ret = -ERANGE; |
1f1ea6c2 | 4577 | goto out_free; |
e50a1c2e | 4578 | } |
1f1ea6c2 | 4579 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4580 | if (buf) { |
4581 | if (res.acl_len > buflen) { | |
4582 | ret = -ERANGE; | |
4583 | goto out_free; | |
4584 | } | |
1f1ea6c2 | 4585 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4586 | } |
1f1ea6c2 TM |
4587 | out_ok: |
4588 | ret = res.acl_len; | |
e50a1c2e | 4589 | out_free: |
bf118a34 AA |
4590 | for (i = 0; i < npages; i++) |
4591 | if (pages[i]) | |
4592 | __free_page(pages[i]); | |
331818f1 TM |
4593 | if (res.acl_scratch) |
4594 | __free_page(res.acl_scratch); | |
aa1870af BF |
4595 | return ret; |
4596 | } | |
4597 | ||
16b4289c TM |
4598 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4599 | { | |
4600 | struct nfs4_exception exception = { }; | |
4601 | ssize_t ret; | |
4602 | do { | |
4603 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4604 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4605 | if (ret >= 0) |
4606 | break; | |
4607 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4608 | } while (exception.retry); | |
4609 | return ret; | |
4610 | } | |
4611 | ||
e50a1c2e BF |
4612 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4613 | { | |
4614 | struct nfs_server *server = NFS_SERVER(inode); | |
4615 | int ret; | |
4616 | ||
4617 | if (!nfs4_server_supports_acls(server)) | |
4618 | return -EOPNOTSUPP; | |
4619 | ret = nfs_revalidate_inode(server, inode); | |
4620 | if (ret < 0) | |
4621 | return ret; | |
08a22b39 AK |
4622 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4623 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4624 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4625 | if (ret != -ENOENT) | |
bf118a34 AA |
4626 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4627 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4628 | return ret; |
4629 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4630 | } | |
4631 | ||
16b4289c | 4632 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4633 | { |
4634 | struct nfs_server *server = NFS_SERVER(inode); | |
4635 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4636 | struct nfs_setaclargs arg = { | |
4637 | .fh = NFS_FH(inode), | |
4638 | .acl_pages = pages, | |
4639 | .acl_len = buflen, | |
4640 | }; | |
73c403a9 | 4641 | struct nfs_setaclres res; |
4b580ee3 BF |
4642 | struct rpc_message msg = { |
4643 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4644 | .rpc_argp = &arg, | |
73c403a9 | 4645 | .rpc_resp = &res, |
4b580ee3 | 4646 | }; |
21f498c2 | 4647 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4648 | int ret, i; |
4b580ee3 BF |
4649 | |
4650 | if (!nfs4_server_supports_acls(server)) | |
4651 | return -EOPNOTSUPP; | |
21f498c2 TM |
4652 | if (npages > ARRAY_SIZE(pages)) |
4653 | return -ERANGE; | |
e9e3d724 NH |
4654 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4655 | if (i < 0) | |
4656 | return i; | |
57ec14c5 | 4657 | nfs4_inode_return_delegation(inode); |
7c513058 | 4658 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4659 | |
4660 | /* | |
4661 | * Free each page after tx, so the only ref left is | |
4662 | * held by the network stack | |
4663 | */ | |
4664 | for (; i > 0; i--) | |
4665 | put_page(pages[i-1]); | |
4666 | ||
08a22b39 AK |
4667 | /* |
4668 | * Acl update can result in inode attribute update. | |
4669 | * so mark the attribute cache invalid. | |
4670 | */ | |
4671 | spin_lock(&inode->i_lock); | |
4672 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4673 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4674 | nfs_access_zap_cache(inode); |
4675 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4676 | return ret; |
4677 | } | |
4678 | ||
16b4289c TM |
4679 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4680 | { | |
4681 | struct nfs4_exception exception = { }; | |
4682 | int err; | |
4683 | do { | |
c1578b76 TM |
4684 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4685 | trace_nfs4_set_acl(inode, err); | |
4686 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4687 | &exception); |
4688 | } while (exception.retry); | |
4689 | return err; | |
4690 | } | |
4691 | ||
aa9c2669 DQ |
4692 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4693 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4694 | size_t buflen) | |
4695 | { | |
4696 | struct nfs_server *server = NFS_SERVER(inode); | |
4697 | struct nfs_fattr fattr; | |
4698 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4699 | ||
4700 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4701 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4702 | .fh = NFS_FH(inode), |
4703 | .bitmask = bitmask, | |
4704 | }; | |
4705 | struct nfs4_getattr_res res = { | |
4706 | .fattr = &fattr, | |
4707 | .label = &label, | |
4708 | .server = server, | |
4709 | }; | |
4710 | struct rpc_message msg = { | |
4711 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4712 | .rpc_argp = &arg, |
aa9c2669 DQ |
4713 | .rpc_resp = &res, |
4714 | }; | |
4715 | int ret; | |
4716 | ||
4717 | nfs_fattr_init(&fattr); | |
4718 | ||
fcb63a9b | 4719 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4720 | if (ret) |
4721 | return ret; | |
4722 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4723 | return -ENOENT; | |
4724 | if (buflen < label.len) | |
4725 | return -ERANGE; | |
4726 | return 0; | |
4727 | } | |
4728 | ||
4729 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4730 | size_t buflen) | |
4731 | { | |
4732 | struct nfs4_exception exception = { }; | |
4733 | int err; | |
4734 | ||
4735 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4736 | return -EOPNOTSUPP; | |
4737 | ||
4738 | do { | |
c1578b76 TM |
4739 | err = _nfs4_get_security_label(inode, buf, buflen); |
4740 | trace_nfs4_get_security_label(inode, err); | |
4741 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4742 | &exception); |
4743 | } while (exception.retry); | |
4744 | return err; | |
4745 | } | |
4746 | ||
4747 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4748 | struct nfs4_label *ilabel, | |
4749 | struct nfs_fattr *fattr, | |
4750 | struct nfs4_label *olabel) | |
4751 | { | |
4752 | ||
4753 | struct iattr sattr = {0}; | |
4754 | struct nfs_server *server = NFS_SERVER(inode); | |
4755 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4756 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4757 | .fh = NFS_FH(inode), |
4758 | .iap = &sattr, | |
4759 | .server = server, | |
4760 | .bitmask = bitmask, | |
4761 | .label = ilabel, | |
4762 | }; | |
4763 | struct nfs_setattrres res = { | |
4764 | .fattr = fattr, | |
4765 | .label = olabel, | |
4766 | .server = server, | |
4767 | }; | |
4768 | struct rpc_message msg = { | |
4769 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4770 | .rpc_argp = &arg, |
aa9c2669 DQ |
4771 | .rpc_resp = &res, |
4772 | }; | |
4773 | int status; | |
4774 | ||
12207f69 | 4775 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4776 | |
12207f69 | 4777 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4778 | if (status) |
4779 | dprintk("%s failed: %d\n", __func__, status); | |
4780 | ||
4781 | return status; | |
4782 | } | |
4783 | ||
4784 | static int nfs4_do_set_security_label(struct inode *inode, | |
4785 | struct nfs4_label *ilabel, | |
4786 | struct nfs_fattr *fattr, | |
4787 | struct nfs4_label *olabel) | |
4788 | { | |
4789 | struct nfs4_exception exception = { }; | |
4790 | int err; | |
4791 | ||
4792 | do { | |
c1578b76 TM |
4793 | err = _nfs4_do_set_security_label(inode, ilabel, |
4794 | fattr, olabel); | |
4795 | trace_nfs4_set_security_label(inode, err); | |
4796 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4797 | &exception); |
4798 | } while (exception.retry); | |
4799 | return err; | |
4800 | } | |
4801 | ||
4802 | static int | |
4803 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4804 | { | |
4805 | struct nfs4_label ilabel, *olabel = NULL; | |
4806 | struct nfs_fattr fattr; | |
4807 | struct rpc_cred *cred; | |
4808 | struct inode *inode = dentry->d_inode; | |
4809 | int status; | |
4810 | ||
4811 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4812 | return -EOPNOTSUPP; | |
4813 | ||
4814 | nfs_fattr_init(&fattr); | |
4815 | ||
4816 | ilabel.pi = 0; | |
4817 | ilabel.lfs = 0; | |
4818 | ilabel.label = (char *)buf; | |
4819 | ilabel.len = buflen; | |
4820 | ||
4821 | cred = rpc_lookup_cred(); | |
4822 | if (IS_ERR(cred)) | |
4823 | return PTR_ERR(cred); | |
4824 | ||
4825 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4826 | if (IS_ERR(olabel)) { | |
4827 | status = -PTR_ERR(olabel); | |
4828 | goto out; | |
4829 | } | |
4830 | ||
4831 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4832 | if (status == 0) | |
4833 | nfs_setsecurity(inode, &fattr, olabel); | |
4834 | ||
4835 | nfs4_label_free(olabel); | |
4836 | out: | |
4837 | put_rpccred(cred); | |
4838 | return status; | |
4839 | } | |
4840 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4841 | ||
4842 | ||
1da177e4 | 4843 | static int |
8478eaa1 N |
4844 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, |
4845 | struct nfs4_state *state, long *timeout) | |
1da177e4 | 4846 | { |
aa5190d0 TM |
4847 | struct nfs_client *clp = server->nfs_client; |
4848 | ||
4849 | if (task->tk_status >= 0) | |
1da177e4 LT |
4850 | return 0; |
4851 | switch(task->tk_status) { | |
a1d0b5ee | 4852 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4853 | case -NFS4ERR_ADMIN_REVOKED: |
4854 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4855 | if (state == NULL) |
4856 | break; | |
4857 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4858 | case -NFS4ERR_OPENMODE: |
4859 | if (state == NULL) | |
4860 | break; | |
5d422301 | 4861 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4862 | goto recovery_failed; |
0400a6b0 | 4863 | goto wait_on_recovery; |
0ced63d1 | 4864 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4865 | if (state != NULL) { |
4866 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 4867 | goto recovery_failed; |
5d422301 | 4868 | } |
1da177e4 | 4869 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4870 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4871 | nfs4_schedule_lease_recovery(clp); |
4872 | goto wait_on_recovery; | |
519ae255 CL |
4873 | case -NFS4ERR_MOVED: |
4874 | if (nfs4_schedule_migration_recovery(server) < 0) | |
4875 | goto recovery_failed; | |
4876 | goto wait_on_recovery; | |
8ef2f8d4 CL |
4877 | case -NFS4ERR_LEASE_MOVED: |
4878 | nfs4_schedule_lease_moved_recovery(clp); | |
4879 | goto wait_on_recovery; | |
4745e315 AA |
4880 | #if defined(CONFIG_NFS_V4_1) |
4881 | case -NFS4ERR_BADSESSION: | |
4882 | case -NFS4ERR_BADSLOT: | |
4883 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4884 | case -NFS4ERR_DEADSESSION: | |
4885 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4886 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4887 | case -NFS4ERR_SEQ_MISORDERED: | |
4888 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4889 | task->tk_status); | |
9f594791 | 4890 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 4891 | goto wait_on_recovery; |
4745e315 | 4892 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4893 | case -NFS4ERR_DELAY: |
aa5190d0 | 4894 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
8478eaa1 N |
4895 | rpc_delay(task, nfs4_update_delay(timeout)); |
4896 | goto restart_call; | |
006ea73e | 4897 | case -NFS4ERR_GRACE: |
1da177e4 | 4898 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 4899 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 4900 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 4901 | goto restart_call; |
1da177e4 LT |
4902 | } |
4903 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4904 | return 0; | |
9f51a78e | 4905 | recovery_failed: |
5d422301 TM |
4906 | task->tk_status = -EIO; |
4907 | return 0; | |
0400a6b0 | 4908 | wait_on_recovery: |
a2c0b9e2 | 4909 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4910 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4911 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
4912 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
4913 | goto recovery_failed; | |
f1478c13 | 4914 | restart_call: |
a2c0b9e2 TM |
4915 | task->tk_status = 0; |
4916 | return -EAGAIN; | |
1da177e4 LT |
4917 | } |
4918 | ||
f092075d CL |
4919 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4920 | nfs4_verifier *bootverf) | |
cd93710e CL |
4921 | { |
4922 | __be32 verf[2]; | |
4923 | ||
2c820d9a CL |
4924 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4925 | /* An impossible timestamp guarantees this value | |
4926 | * will never match a generated boot time. */ | |
4927 | verf[0] = 0; | |
17f26b12 | 4928 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4929 | } else { |
f092075d | 4930 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4931 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4932 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4933 | } |
cd93710e CL |
4934 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4935 | } | |
4936 | ||
e984a55a CL |
4937 | static unsigned int |
4938 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4939 | char *buf, size_t len) | |
4940 | { | |
4941 | unsigned int result; | |
4942 | ||
4943 | rcu_read_lock(); | |
4944 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4945 | clp->cl_ipaddr, | |
4946 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4947 | RPC_DISPLAY_ADDR), | |
4948 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4949 | RPC_DISPLAY_PROTO)); | |
4950 | rcu_read_unlock(); | |
4951 | return result; | |
4952 | } | |
4953 | ||
4954 | static unsigned int | |
4955 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4956 | char *buf, size_t len) | |
4957 | { | |
55b59293 | 4958 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4959 | |
4960 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4961 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4962 | clp->rpc_ops->version, | |
4963 | clp->cl_minorversion, | |
4964 | nfs4_client_id_uniquifier, | |
4965 | nodename); | |
e984a55a CL |
4966 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4967 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4968 | nodename); |
e984a55a CL |
4969 | } |
4970 | ||
706cb8db CL |
4971 | /* |
4972 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
4973 | * services. Advertise one based on the address family of the | |
4974 | * clientaddr. | |
4975 | */ | |
4976 | static unsigned int | |
4977 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
4978 | { | |
4979 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
4980 | return scnprintf(buf, len, "tcp6"); | |
4981 | else | |
4982 | return scnprintf(buf, len, "tcp"); | |
4983 | } | |
4984 | ||
f11b2a1c JL |
4985 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
4986 | { | |
4987 | struct nfs4_setclientid *sc = calldata; | |
4988 | ||
4989 | if (task->tk_status == 0) | |
4990 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
4991 | } | |
4992 | ||
4993 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
4994 | .rpc_call_done = nfs4_setclientid_done, | |
4995 | }; | |
4996 | ||
6bbb4ae8 CL |
4997 | /** |
4998 | * nfs4_proc_setclientid - Negotiate client ID | |
4999 | * @clp: state data structure | |
5000 | * @program: RPC program for NFSv4 callback service | |
5001 | * @port: IP port number for NFS4 callback service | |
5002 | * @cred: RPC credential to use for this call | |
5003 | * @res: where to place the result | |
5004 | * | |
5005 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5006 | */ | |
bb8b27e5 TM |
5007 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5008 | unsigned short port, struct rpc_cred *cred, | |
5009 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5010 | { |
5011 | nfs4_verifier sc_verifier; | |
5012 | struct nfs4_setclientid setclientid = { | |
5013 | .sc_verifier = &sc_verifier, | |
5014 | .sc_prog = program, | |
f4eecd5d | 5015 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
5016 | }; |
5017 | struct rpc_message msg = { | |
5018 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5019 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5020 | .rpc_resp = res, |
286d7d6a | 5021 | .rpc_cred = cred, |
1da177e4 | 5022 | }; |
f11b2a1c JL |
5023 | struct rpc_task *task; |
5024 | struct rpc_task_setup task_setup_data = { | |
5025 | .rpc_client = clp->cl_rpcclient, | |
5026 | .rpc_message = &msg, | |
5027 | .callback_ops = &nfs4_setclientid_ops, | |
5028 | .callback_data = &setclientid, | |
5029 | .flags = RPC_TASK_TIMEOUT, | |
5030 | }; | |
6bbb4ae8 | 5031 | int status; |
1da177e4 | 5032 | |
de734831 | 5033 | /* nfs_client_id4 */ |
f092075d | 5034 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
5035 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
5036 | setclientid.sc_name_len = | |
5037 | nfs4_init_uniform_client_string(clp, | |
5038 | setclientid.sc_name, | |
5039 | sizeof(setclientid.sc_name)); | |
5040 | else | |
5041 | setclientid.sc_name_len = | |
5042 | nfs4_init_nonuniform_client_string(clp, | |
5043 | setclientid.sc_name, | |
5044 | sizeof(setclientid.sc_name)); | |
de734831 | 5045 | /* cb_client4 */ |
706cb8db CL |
5046 | setclientid.sc_netid_len = |
5047 | nfs4_init_callback_netid(clp, | |
5048 | setclientid.sc_netid, | |
5049 | sizeof(setclientid.sc_netid)); | |
de734831 | 5050 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5051 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5052 | clp->cl_ipaddr, port >> 8, port & 255); |
5053 | ||
6bbb4ae8 CL |
5054 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
5055 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5056 | setclientid.sc_name_len, setclientid.sc_name); | |
f11b2a1c JL |
5057 | task = rpc_run_task(&task_setup_data); |
5058 | if (IS_ERR(task)) { | |
5059 | status = PTR_ERR(task); | |
5060 | goto out; | |
5061 | } | |
5062 | status = task->tk_status; | |
5063 | if (setclientid.sc_cred) { | |
5064 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5065 | put_rpccred(setclientid.sc_cred); | |
5066 | } | |
5067 | rpc_put_task(task); | |
5068 | out: | |
c6d01c6f | 5069 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5070 | dprintk("NFS reply setclientid: %d\n", status); |
5071 | return status; | |
1da177e4 LT |
5072 | } |
5073 | ||
6bbb4ae8 CL |
5074 | /** |
5075 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5076 | * @clp: state data structure | |
5077 | * @res: result of a previous SETCLIENTID | |
5078 | * @cred: RPC credential to use for this call | |
5079 | * | |
5080 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5081 | */ | |
fd954ae1 | 5082 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5083 | struct nfs4_setclientid_res *arg, |
5084 | struct rpc_cred *cred) | |
1da177e4 | 5085 | { |
1da177e4 LT |
5086 | struct rpc_message msg = { |
5087 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5088 | .rpc_argp = arg, |
286d7d6a | 5089 | .rpc_cred = cred, |
1da177e4 | 5090 | }; |
1da177e4 LT |
5091 | int status; |
5092 | ||
6bbb4ae8 CL |
5093 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5094 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5095 | clp->cl_clientid); | |
1bd714f2 | 5096 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5097 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5098 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5099 | return status; |
5100 | } | |
5101 | ||
fe650407 TM |
5102 | struct nfs4_delegreturndata { |
5103 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5104 | struct nfs4_delegreturnres res; |
fe650407 TM |
5105 | struct nfs_fh fh; |
5106 | nfs4_stateid stateid; | |
26e976a8 | 5107 | unsigned long timestamp; |
fa178f29 | 5108 | struct nfs_fattr fattr; |
fe650407 | 5109 | int rpc_status; |
039b756a PT |
5110 | struct inode *inode; |
5111 | bool roc; | |
5112 | u32 roc_barrier; | |
fe650407 TM |
5113 | }; |
5114 | ||
fe650407 TM |
5115 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5116 | { | |
5117 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5118 | |
14516c3a TM |
5119 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5120 | return; | |
938e1010 | 5121 | |
ca8acf8d | 5122 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5123 | switch (task->tk_status) { |
79708861 | 5124 | case 0: |
fa178f29 | 5125 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5126 | case -NFS4ERR_ADMIN_REVOKED: |
5127 | case -NFS4ERR_DELEG_REVOKED: | |
5128 | case -NFS4ERR_BAD_STATEID: | |
5129 | case -NFS4ERR_OLD_STATEID: | |
5130 | case -NFS4ERR_STALE_STATEID: | |
5131 | case -NFS4ERR_EXPIRED: | |
5132 | task->tk_status = 0; | |
039b756a PT |
5133 | if (data->roc) |
5134 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5135 | break; |
79708861 | 5136 | default: |
8478eaa1 N |
5137 | if (nfs4_async_handle_error(task, data->res.server, |
5138 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5139 | rpc_restart_call_prepare(task); |
79708861 RL |
5140 | return; |
5141 | } | |
5142 | } | |
5143 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5144 | } |
5145 | ||
5146 | static void nfs4_delegreturn_release(void *calldata) | |
5147 | { | |
039b756a PT |
5148 | struct nfs4_delegreturndata *data = calldata; |
5149 | ||
5150 | if (data->roc) | |
5151 | pnfs_roc_release(data->inode); | |
fe650407 TM |
5152 | kfree(calldata); |
5153 | } | |
5154 | ||
938e1010 AA |
5155 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5156 | { | |
5157 | struct nfs4_delegreturndata *d_data; | |
5158 | ||
5159 | d_data = (struct nfs4_delegreturndata *)data; | |
5160 | ||
039b756a PT |
5161 | if (d_data->roc && |
5162 | pnfs_roc_drain(d_data->inode, &d_data->roc_barrier, task)) | |
5163 | return; | |
5164 | ||
d9afbd1b TM |
5165 | nfs4_setup_sequence(d_data->res.server, |
5166 | &d_data->args.seq_args, | |
5167 | &d_data->res.seq_res, | |
5168 | task); | |
938e1010 | 5169 | } |
938e1010 | 5170 | |
c8d149f3 | 5171 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5172 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5173 | .rpc_call_done = nfs4_delegreturn_done, |
5174 | .rpc_release = nfs4_delegreturn_release, | |
5175 | }; | |
5176 | ||
e6f81075 | 5177 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5178 | { |
5179 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5180 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5181 | struct rpc_task *task; |
5138fde0 TM |
5182 | struct rpc_message msg = { |
5183 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5184 | .rpc_cred = cred, | |
5185 | }; | |
c970aa85 TM |
5186 | struct rpc_task_setup task_setup_data = { |
5187 | .rpc_client = server->client, | |
5138fde0 | 5188 | .rpc_message = &msg, |
c970aa85 TM |
5189 | .callback_ops = &nfs4_delegreturn_ops, |
5190 | .flags = RPC_TASK_ASYNC, | |
5191 | }; | |
e6f81075 | 5192 | int status = 0; |
fe650407 | 5193 | |
8535b2be | 5194 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5195 | if (data == NULL) |
5196 | return -ENOMEM; | |
a9c92d6b | 5197 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5198 | data->args.fhandle = &data->fh; |
5199 | data->args.stateid = &data->stateid; | |
9e907fec | 5200 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5201 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5202 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5203 | data->res.fattr = &data->fattr; |
5204 | data->res.server = server; | |
5138fde0 | 5205 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5206 | data->timestamp = jiffies; |
fe650407 | 5207 | data->rpc_status = 0; |
039b756a PT |
5208 | data->inode = inode; |
5209 | data->roc = list_empty(&NFS_I(inode)->open_files) ? | |
5210 | pnfs_roc(inode) : false; | |
fe650407 | 5211 | |
c970aa85 | 5212 | task_setup_data.callback_data = data; |
1174dd1f TM |
5213 | msg.rpc_argp = &data->args; |
5214 | msg.rpc_resp = &data->res; | |
c970aa85 | 5215 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5216 | if (IS_ERR(task)) |
fe650407 | 5217 | return PTR_ERR(task); |
e6f81075 TM |
5218 | if (!issync) |
5219 | goto out; | |
fe650407 | 5220 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5221 | if (status != 0) |
5222 | goto out; | |
5223 | status = data->rpc_status; | |
e144cbcc TM |
5224 | if (status == 0) |
5225 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5226 | else | |
5227 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5228 | out: |
e6b3c4db | 5229 | rpc_put_task(task); |
fe650407 | 5230 | return status; |
1da177e4 LT |
5231 | } |
5232 | ||
e6f81075 | 5233 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5234 | { |
5235 | struct nfs_server *server = NFS_SERVER(inode); | |
5236 | struct nfs4_exception exception = { }; | |
5237 | int err; | |
5238 | do { | |
e6f81075 | 5239 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5240 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5241 | switch (err) { |
5242 | case -NFS4ERR_STALE_STATEID: | |
5243 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5244 | case 0: |
5245 | return 0; | |
5246 | } | |
5247 | err = nfs4_handle_exception(server, err, &exception); | |
5248 | } while (exception.retry); | |
5249 | return err; | |
5250 | } | |
5251 | ||
5252 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5253 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5254 | ||
5255 | /* | |
5256 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5257 | */ | |
5258 | static unsigned long | |
5259 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5260 | { | |
416ad3c9 | 5261 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5262 | timeout <<= 1; |
5263 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5264 | return NFS4_LOCK_MAXTIMEOUT; | |
5265 | return timeout; | |
5266 | } | |
5267 | ||
1da177e4 LT |
5268 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5269 | { | |
5270 | struct inode *inode = state->inode; | |
5271 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5272 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5273 | struct nfs_lockt_args arg = { |
1da177e4 | 5274 | .fh = NFS_FH(inode), |
911d1aaf | 5275 | .fl = request, |
1da177e4 | 5276 | }; |
911d1aaf TM |
5277 | struct nfs_lockt_res res = { |
5278 | .denied = request, | |
1da177e4 LT |
5279 | }; |
5280 | struct rpc_message msg = { | |
5281 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5282 | .rpc_argp = &arg, | |
5283 | .rpc_resp = &res, | |
5284 | .rpc_cred = state->owner->so_cred, | |
5285 | }; | |
1da177e4 LT |
5286 | struct nfs4_lock_state *lsp; |
5287 | int status; | |
5288 | ||
911d1aaf | 5289 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5290 | status = nfs4_set_lock_state(state, request); |
5291 | if (status != 0) | |
5292 | goto out; | |
5293 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5294 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5295 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5296 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5297 | switch (status) { |
5298 | case 0: | |
5299 | request->fl_type = F_UNLCK; | |
5300 | break; | |
5301 | case -NFS4ERR_DENIED: | |
5302 | status = 0; | |
1da177e4 | 5303 | } |
70cc6487 | 5304 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5305 | request->fl_ops = NULL; |
8d0a8a9d | 5306 | out: |
1da177e4 LT |
5307 | return status; |
5308 | } | |
5309 | ||
5310 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5311 | { | |
5312 | struct nfs4_exception exception = { }; | |
5313 | int err; | |
5314 | ||
5315 | do { | |
d1b748a5 TM |
5316 | err = _nfs4_proc_getlk(state, cmd, request); |
5317 | trace_nfs4_get_lock(request, state, cmd, err); | |
5318 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5319 | &exception); |
5320 | } while (exception.retry); | |
5321 | return err; | |
5322 | } | |
5323 | ||
5324 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5325 | { | |
5326 | int res = 0; | |
5327 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5328 | case FL_POSIX: | |
5329 | res = posix_lock_file_wait(file, fl); | |
5330 | break; | |
5331 | case FL_FLOCK: | |
5332 | res = flock_lock_file_wait(file, fl); | |
5333 | break; | |
5334 | default: | |
5335 | BUG(); | |
5336 | } | |
1da177e4 LT |
5337 | return res; |
5338 | } | |
5339 | ||
faf5f49c | 5340 | struct nfs4_unlockdata { |
911d1aaf TM |
5341 | struct nfs_locku_args arg; |
5342 | struct nfs_locku_res res; | |
faf5f49c TM |
5343 | struct nfs4_lock_state *lsp; |
5344 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5345 | struct file_lock fl; |
5346 | const struct nfs_server *server; | |
26e976a8 | 5347 | unsigned long timestamp; |
faf5f49c TM |
5348 | }; |
5349 | ||
911d1aaf TM |
5350 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5351 | struct nfs_open_context *ctx, | |
5352 | struct nfs4_lock_state *lsp, | |
5353 | struct nfs_seqid *seqid) | |
5354 | { | |
5355 | struct nfs4_unlockdata *p; | |
5356 | struct inode *inode = lsp->ls_state->inode; | |
5357 | ||
8535b2be | 5358 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5359 | if (p == NULL) |
5360 | return NULL; | |
5361 | p->arg.fh = NFS_FH(inode); | |
5362 | p->arg.fl = &p->fl; | |
5363 | p->arg.seqid = seqid; | |
c1d51931 | 5364 | p->res.seqid = seqid; |
911d1aaf TM |
5365 | p->arg.stateid = &lsp->ls_stateid; |
5366 | p->lsp = lsp; | |
5367 | atomic_inc(&lsp->ls_count); | |
5368 | /* Ensure we don't close file until we're done freeing locks! */ | |
5369 | p->ctx = get_nfs_open_context(ctx); | |
5370 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5371 | p->server = NFS_SERVER(inode); | |
5372 | return p; | |
5373 | } | |
5374 | ||
06f814a3 | 5375 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5376 | { |
963d8fe5 | 5377 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5378 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5379 | nfs4_put_lock_state(calldata->lsp); |
5380 | put_nfs_open_context(calldata->ctx); | |
5381 | kfree(calldata); | |
faf5f49c TM |
5382 | } |
5383 | ||
963d8fe5 | 5384 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5385 | { |
963d8fe5 | 5386 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5387 | |
14516c3a TM |
5388 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5389 | return; | |
faf5f49c TM |
5390 | switch (task->tk_status) { |
5391 | case 0: | |
f597c537 TM |
5392 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5393 | &calldata->res.stateid); | |
26e976a8 | 5394 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5395 | break; |
9e33bed5 TM |
5396 | case -NFS4ERR_BAD_STATEID: |
5397 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5398 | case -NFS4ERR_STALE_STATEID: |
5399 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5400 | break; |
5401 | default: | |
8478eaa1 N |
5402 | if (nfs4_async_handle_error(task, calldata->server, |
5403 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5404 | rpc_restart_call_prepare(task); |
faf5f49c | 5405 | } |
2b1bc308 | 5406 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5407 | } |
5408 | ||
4ce70ada | 5409 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5410 | { |
4ce70ada | 5411 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5412 | |
911d1aaf | 5413 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5414 | goto out_wait; |
795a88c9 | 5415 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5416 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5417 | goto out_no_action; |
faf5f49c | 5418 | } |
26e976a8 | 5419 | calldata->timestamp = jiffies; |
035168ab | 5420 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5421 | &calldata->arg.seq_args, |
2240a9e2 TM |
5422 | &calldata->res.seq_res, |
5423 | task) != 0) | |
5424 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5425 | return; |
5426 | out_no_action: | |
5427 | task->tk_action = NULL; | |
5428 | out_wait: | |
5429 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5430 | } |
5431 | ||
963d8fe5 | 5432 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5433 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5434 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5435 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5436 | }; |
5437 | ||
a5d16a4d TM |
5438 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5439 | struct nfs_open_context *ctx, | |
5440 | struct nfs4_lock_state *lsp, | |
5441 | struct nfs_seqid *seqid) | |
5442 | { | |
5443 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5444 | struct rpc_message msg = { |
5445 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5446 | .rpc_cred = ctx->cred, | |
5447 | }; | |
c970aa85 TM |
5448 | struct rpc_task_setup task_setup_data = { |
5449 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5450 | .rpc_message = &msg, |
c970aa85 | 5451 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5452 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5453 | .flags = RPC_TASK_ASYNC, |
5454 | }; | |
a5d16a4d | 5455 | |
fa940720 WAA |
5456 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5457 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5458 | ||
137d6aca FF |
5459 | /* Ensure this is an unlock - when canceling a lock, the |
5460 | * canceled lock is passed in, and it won't be an unlock. | |
5461 | */ | |
5462 | fl->fl_type = F_UNLCK; | |
5463 | ||
a5d16a4d TM |
5464 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5465 | if (data == NULL) { | |
5466 | nfs_free_seqid(seqid); | |
5467 | return ERR_PTR(-ENOMEM); | |
5468 | } | |
5469 | ||
a9c92d6b | 5470 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5471 | msg.rpc_argp = &data->arg; |
5472 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5473 | task_setup_data.callback_data = data; |
5474 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5475 | } |
5476 | ||
faf5f49c TM |
5477 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5478 | { | |
65b62a29 TM |
5479 | struct inode *inode = state->inode; |
5480 | struct nfs4_state_owner *sp = state->owner; | |
5481 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5482 | struct nfs_seqid *seqid; |
1da177e4 | 5483 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5484 | struct rpc_task *task; |
5485 | int status = 0; | |
536ff0f8 | 5486 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5487 | |
8d0a8a9d | 5488 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5489 | /* Unlock _before_ we do the RPC call */ |
5490 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5491 | /* Exclude nfs_delegation_claim_locks() */ |
5492 | mutex_lock(&sp->so_delegreturn_mutex); | |
5493 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5494 | down_read(&nfsi->rwsem); |
5495 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5496 | up_read(&nfsi->rwsem); | |
65b62a29 | 5497 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5498 | goto out; |
19e03c57 TM |
5499 | } |
5500 | up_read(&nfsi->rwsem); | |
65b62a29 | 5501 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5502 | if (status != 0) |
9b073574 TM |
5503 | goto out; |
5504 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5505 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5506 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5507 | goto out; | |
8535b2be | 5508 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5509 | status = -ENOMEM; |
911d1aaf | 5510 | if (seqid == NULL) |
9b073574 | 5511 | goto out; |
cd3758e3 | 5512 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5513 | status = PTR_ERR(task); |
5514 | if (IS_ERR(task)) | |
9b073574 | 5515 | goto out; |
a5d16a4d | 5516 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5517 | rpc_put_task(task); |
9b073574 | 5518 | out: |
536ff0f8 | 5519 | request->fl_flags = fl_flags; |
d1b748a5 | 5520 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5521 | return status; |
5522 | } | |
5523 | ||
a5d16a4d TM |
5524 | struct nfs4_lockdata { |
5525 | struct nfs_lock_args arg; | |
5526 | struct nfs_lock_res res; | |
5527 | struct nfs4_lock_state *lsp; | |
5528 | struct nfs_open_context *ctx; | |
5529 | struct file_lock fl; | |
26e976a8 | 5530 | unsigned long timestamp; |
a5d16a4d TM |
5531 | int rpc_status; |
5532 | int cancelled; | |
66179efe | 5533 | struct nfs_server *server; |
a5d16a4d TM |
5534 | }; |
5535 | ||
5536 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5537 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5538 | gfp_t gfp_mask) | |
1da177e4 | 5539 | { |
a5d16a4d TM |
5540 | struct nfs4_lockdata *p; |
5541 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5542 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5543 | |
8535b2be | 5544 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5545 | if (p == NULL) |
5546 | return NULL; | |
5547 | ||
5548 | p->arg.fh = NFS_FH(inode); | |
5549 | p->arg.fl = &p->fl; | |
8535b2be | 5550 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5551 | if (p->arg.open_seqid == NULL) |
5552 | goto out_free; | |
8535b2be | 5553 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5554 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5555 | goto out_free_seqid; |
a5d16a4d | 5556 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5557 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5558 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5559 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5560 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5561 | p->lsp = lsp; |
66179efe | 5562 | p->server = server; |
a5d16a4d TM |
5563 | atomic_inc(&lsp->ls_count); |
5564 | p->ctx = get_nfs_open_context(ctx); | |
5565 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5566 | return p; | |
2f74c0a0 TM |
5567 | out_free_seqid: |
5568 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5569 | out_free: |
5570 | kfree(p); | |
5571 | return NULL; | |
5572 | } | |
5573 | ||
5574 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5575 | { | |
5576 | struct nfs4_lockdata *data = calldata; | |
5577 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5578 | |
3110ff80 | 5579 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5580 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5581 | goto out_wait; |
a5d16a4d TM |
5582 | /* Do we need to do an open_to_lock_owner? */ |
5583 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5584 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5585 | goto out_release_lock_seqid; |
8fe72bac | 5586 | } |
8e472f33 | 5587 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5588 | data->arg.new_lock_owner = 1; |
c1d51931 | 5589 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5590 | } else |
5591 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5592 | if (!nfs4_valid_open_stateid(state)) { |
5593 | data->rpc_status = -EBADF; | |
5594 | task->tk_action = NULL; | |
5595 | goto out_release_open_seqid; | |
5596 | } | |
26e976a8 | 5597 | data->timestamp = jiffies; |
035168ab TM |
5598 | if (nfs4_setup_sequence(data->server, |
5599 | &data->arg.seq_args, | |
2240a9e2 | 5600 | &data->res.seq_res, |
d9afbd1b | 5601 | task) == 0) |
66179efe | 5602 | return; |
5d422301 | 5603 | out_release_open_seqid: |
2240a9e2 TM |
5604 | nfs_release_seqid(data->arg.open_seqid); |
5605 | out_release_lock_seqid: | |
5606 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5607 | out_wait: |
5608 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5609 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5610 | } |
5611 | ||
a5d16a4d TM |
5612 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5613 | { | |
5614 | struct nfs4_lockdata *data = calldata; | |
5615 | ||
3110ff80 | 5616 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5617 | |
14516c3a TM |
5618 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5619 | return; | |
66179efe | 5620 | |
a5d16a4d | 5621 | data->rpc_status = task->tk_status; |
a5d16a4d | 5622 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5623 | if (data->rpc_status == 0) |
5624 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5625 | else | |
5626 | goto out; | |
5627 | } | |
5628 | if (data->rpc_status == 0) { | |
f597c537 | 5629 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5630 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5631 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5632 | } |
a5d16a4d | 5633 | out: |
3110ff80 | 5634 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5635 | } |
5636 | ||
5637 | static void nfs4_lock_release(void *calldata) | |
5638 | { | |
5639 | struct nfs4_lockdata *data = calldata; | |
5640 | ||
3110ff80 | 5641 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5642 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5643 | if (data->cancelled != 0) { |
5644 | struct rpc_task *task; | |
5645 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5646 | data->arg.lock_seqid); | |
5647 | if (!IS_ERR(task)) | |
bf294b41 | 5648 | rpc_put_task_async(task); |
3110ff80 | 5649 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5650 | } else |
5651 | nfs_free_seqid(data->arg.lock_seqid); | |
5652 | nfs4_put_lock_state(data->lsp); | |
5653 | put_nfs_open_context(data->ctx); | |
5654 | kfree(data); | |
3110ff80 | 5655 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5656 | } |
5657 | ||
5658 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5659 | .rpc_call_prepare = nfs4_lock_prepare, | |
5660 | .rpc_call_done = nfs4_lock_done, | |
5661 | .rpc_release = nfs4_lock_release, | |
5662 | }; | |
5663 | ||
2bee72a6 TM |
5664 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5665 | { | |
2bee72a6 TM |
5666 | switch (error) { |
5667 | case -NFS4ERR_ADMIN_REVOKED: | |
5668 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5669 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5670 | if (new_lock_owner != 0 || |
795a88c9 | 5671 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5672 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5673 | break; |
5674 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5675 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5676 | case -NFS4ERR_EXPIRED: |
5677 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5678 | }; |
5679 | } | |
5680 | ||
afe6c27c | 5681 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5682 | { |
5683 | struct nfs4_lockdata *data; | |
5684 | struct rpc_task *task; | |
5138fde0 TM |
5685 | struct rpc_message msg = { |
5686 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5687 | .rpc_cred = state->owner->so_cred, | |
5688 | }; | |
c970aa85 TM |
5689 | struct rpc_task_setup task_setup_data = { |
5690 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5691 | .rpc_message = &msg, |
c970aa85 | 5692 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5693 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5694 | .flags = RPC_TASK_ASYNC, |
5695 | }; | |
a5d16a4d TM |
5696 | int ret; |
5697 | ||
3110ff80 | 5698 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5699 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5700 | fl->fl_u.nfs4_fl.owner, |
5701 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5702 | if (data == NULL) |
5703 | return -ENOMEM; | |
5704 | if (IS_SETLKW(cmd)) | |
5705 | data->arg.block = 1; | |
a9c92d6b | 5706 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5707 | msg.rpc_argp = &data->arg; |
5708 | msg.rpc_resp = &data->res; | |
c970aa85 | 5709 | task_setup_data.callback_data = data; |
8fe72bac TM |
5710 | if (recovery_type > NFS_LOCK_NEW) { |
5711 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5712 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5713 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5714 | } | |
c970aa85 | 5715 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5716 | if (IS_ERR(task)) |
a5d16a4d | 5717 | return PTR_ERR(task); |
a5d16a4d TM |
5718 | ret = nfs4_wait_for_completion_rpc_task(task); |
5719 | if (ret == 0) { | |
5720 | ret = data->rpc_status; | |
2bee72a6 TM |
5721 | if (ret) |
5722 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5723 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5724 | } else |
5725 | data->cancelled = 1; | |
e6b3c4db | 5726 | rpc_put_task(task); |
3110ff80 | 5727 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5728 | return ret; |
1da177e4 LT |
5729 | } |
5730 | ||
5731 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5732 | { | |
202b50dc | 5733 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5734 | struct nfs4_exception exception = { |
5735 | .inode = state->inode, | |
5736 | }; | |
202b50dc TM |
5737 | int err; |
5738 | ||
5739 | do { | |
42a2d13e TM |
5740 | /* Cache the lock if possible... */ |
5741 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5742 | return 0; | |
afe6c27c | 5743 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5744 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5745 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5746 | break; |
5747 | nfs4_handle_exception(server, err, &exception); | |
5748 | } while (exception.retry); | |
5749 | return err; | |
1da177e4 LT |
5750 | } |
5751 | ||
5752 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5753 | { | |
202b50dc | 5754 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5755 | struct nfs4_exception exception = { |
5756 | .inode = state->inode, | |
5757 | }; | |
202b50dc TM |
5758 | int err; |
5759 | ||
6bfc93ef TM |
5760 | err = nfs4_set_lock_state(state, request); |
5761 | if (err != 0) | |
5762 | return err; | |
f6de7a39 | 5763 | if (!recover_lost_locks) { |
ef1820f9 N |
5764 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5765 | return 0; | |
5766 | } | |
202b50dc | 5767 | do { |
42a2d13e TM |
5768 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5769 | return 0; | |
afe6c27c | 5770 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5771 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5772 | switch (err) { |
5773 | default: | |
5774 | goto out; | |
5775 | case -NFS4ERR_GRACE: | |
5776 | case -NFS4ERR_DELAY: | |
5777 | nfs4_handle_exception(server, err, &exception); | |
5778 | err = 0; | |
5779 | } | |
202b50dc | 5780 | } while (exception.retry); |
a9ed2e25 | 5781 | out: |
202b50dc | 5782 | return err; |
1da177e4 LT |
5783 | } |
5784 | ||
f062eb6c | 5785 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5786 | /** |
5787 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5788 | * | |
5789 | * @state: NFSv4 state for an inode | |
5790 | * | |
5791 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5792 | * Otherwise a negative NFS4ERR value is returned. | |
5793 | */ | |
b01dd1d8 | 5794 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5795 | { |
eb64cf96 | 5796 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5797 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5798 | struct nfs_server *server = NFS_SERVER(state->inode); |
5799 | ||
b01dd1d8 | 5800 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5801 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5802 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5803 | ||
5804 | status = nfs41_test_stateid(server, | |
5805 | &lsp->ls_stateid, | |
5806 | cred); | |
08cb47fa | 5807 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5808 | if (status != NFS_OK) { |
3e60ffdd CL |
5809 | /* Free the stateid unless the server |
5810 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5811 | if (status != -NFS4ERR_BAD_STATEID) |
5812 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5813 | &lsp->ls_stateid, |
5814 | cred); | |
795a88c9 | 5815 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5816 | ret = status; |
5817 | } | |
5818 | } | |
5819 | }; | |
5820 | ||
5821 | return ret; | |
5822 | } | |
5823 | ||
5824 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5825 | { | |
5826 | int status = NFS_OK; | |
5827 | ||
5828 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5829 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5830 | if (status != NFS_OK) |
5831 | status = nfs4_lock_expired(state, request); | |
5832 | return status; | |
f062eb6c BS |
5833 | } |
5834 | #endif | |
5835 | ||
1da177e4 LT |
5836 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5837 | { | |
9a99af49 | 5838 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5839 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5840 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5841 | unsigned int seq; |
8e469ebd | 5842 | int status = -ENOLCK; |
1da177e4 | 5843 | |
8e469ebd TM |
5844 | if ((fl_flags & FL_POSIX) && |
5845 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5846 | goto out; | |
6bfc93ef | 5847 | /* Is this a delegated open? */ |
6bfc93ef TM |
5848 | status = nfs4_set_lock_state(state, request); |
5849 | if (status != 0) | |
5850 | goto out; | |
01c3b861 TM |
5851 | request->fl_flags |= FL_ACCESS; |
5852 | status = do_vfs_lock(request->fl_file, request); | |
5853 | if (status < 0) | |
5854 | goto out; | |
19e03c57 | 5855 | down_read(&nfsi->rwsem); |
01c3b861 | 5856 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5857 | /* Yes: cache locks! */ |
01c3b861 | 5858 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5859 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5860 | status = do_vfs_lock(request->fl_file, request); | |
5861 | goto out_unlock; | |
01c3b861 | 5862 | } |
9a99af49 TM |
5863 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5864 | up_read(&nfsi->rwsem); | |
afe6c27c | 5865 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5866 | if (status != 0) |
9a99af49 TM |
5867 | goto out; |
5868 | down_read(&nfsi->rwsem); | |
5869 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5870 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5871 | goto out_unlock; |
9a99af49 | 5872 | } |
6bfc93ef | 5873 | /* Note: we always want to sleep here! */ |
01c3b861 | 5874 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5875 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5876 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5877 | "manager!\n", __func__); | |
01c3b861 | 5878 | out_unlock: |
19e03c57 | 5879 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5880 | out: |
5881 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5882 | return status; |
5883 | } | |
5884 | ||
5885 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5886 | { | |
a1d0b5ee TM |
5887 | struct nfs4_exception exception = { |
5888 | .state = state, | |
05ffe24f | 5889 | .inode = state->inode, |
a1d0b5ee | 5890 | }; |
1da177e4 LT |
5891 | int err; |
5892 | ||
5893 | do { | |
965b5d67 | 5894 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5895 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5896 | if (err == -NFS4ERR_DENIED) |
5897 | err = -EAGAIN; | |
1da177e4 | 5898 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5899 | err, &exception); |
1da177e4 LT |
5900 | } while (exception.retry); |
5901 | return err; | |
5902 | } | |
5903 | ||
5904 | static int | |
5905 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5906 | { | |
5907 | struct nfs_open_context *ctx; | |
5908 | struct nfs4_state *state; | |
5909 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5910 | int status; | |
5911 | ||
5912 | /* verify open state */ | |
cd3758e3 | 5913 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5914 | state = ctx->state; |
5915 | ||
5916 | if (request->fl_start < 0 || request->fl_end < 0) | |
5917 | return -EINVAL; | |
5918 | ||
d953126a TM |
5919 | if (IS_GETLK(cmd)) { |
5920 | if (state != NULL) | |
5921 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5922 | return 0; | |
5923 | } | |
1da177e4 LT |
5924 | |
5925 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5926 | return -EINVAL; | |
5927 | ||
d953126a TM |
5928 | if (request->fl_type == F_UNLCK) { |
5929 | if (state != NULL) | |
5930 | return nfs4_proc_unlck(state, cmd, request); | |
5931 | return 0; | |
5932 | } | |
1da177e4 | 5933 | |
d953126a TM |
5934 | if (state == NULL) |
5935 | return -ENOLCK; | |
55725513 TM |
5936 | /* |
5937 | * Don't rely on the VFS having checked the file open mode, | |
5938 | * since it won't do this for flock() locks. | |
5939 | */ | |
f44106e2 | 5940 | switch (request->fl_type) { |
55725513 TM |
5941 | case F_RDLCK: |
5942 | if (!(filp->f_mode & FMODE_READ)) | |
5943 | return -EBADF; | |
5944 | break; | |
5945 | case F_WRLCK: | |
5946 | if (!(filp->f_mode & FMODE_WRITE)) | |
5947 | return -EBADF; | |
5948 | } | |
5949 | ||
1da177e4 LT |
5950 | do { |
5951 | status = nfs4_proc_setlk(state, cmd, request); | |
5952 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5953 | break; | |
5954 | timeout = nfs4_set_lock_task_retry(timeout); | |
5955 | status = -ERESTARTSYS; | |
5956 | if (signalled()) | |
5957 | break; | |
5958 | } while(status < 0); | |
1da177e4 LT |
5959 | return status; |
5960 | } | |
5961 | ||
db4f2e63 | 5962 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5963 | { |
5964 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5965 | int err; |
5966 | ||
5967 | err = nfs4_set_lock_state(state, fl); | |
5968 | if (err != 0) | |
db4f2e63 | 5969 | return err; |
4a706fa0 | 5970 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5971 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5972 | } |
6b3b5496 | 5973 | |
cf470c3e TM |
5974 | struct nfs_release_lockowner_data { |
5975 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5976 | struct nfs_server *server; |
cf470c3e | 5977 | struct nfs_release_lockowner_args args; |
b7e63a10 | 5978 | struct nfs_release_lockowner_res res; |
60ea6812 | 5979 | unsigned long timestamp; |
cf470c3e TM |
5980 | }; |
5981 | ||
fbd4bfd1 CL |
5982 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
5983 | { | |
5984 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 KM |
5985 | struct nfs_server *server = data->server; |
5986 | nfs40_setup_sequence(server, &data->args.seq_args, | |
5987 | &data->res.seq_res, task); | |
5988 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; | |
60ea6812 | 5989 | data->timestamp = jiffies; |
fbd4bfd1 CL |
5990 | } |
5991 | ||
5992 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
5993 | { | |
5994 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
5995 | struct nfs_server *server = data->server; |
5996 | ||
b7e63a10 | 5997 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
5998 | |
5999 | switch (task->tk_status) { | |
6000 | case 0: | |
6001 | renew_lease(server, data->timestamp); | |
6002 | break; | |
6003 | case -NFS4ERR_STALE_CLIENTID: | |
6004 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6005 | nfs4_schedule_lease_recovery(server->nfs_client); |
6006 | break; | |
60ea6812 CL |
6007 | case -NFS4ERR_LEASE_MOVED: |
6008 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6009 | if (nfs4_async_handle_error(task, server, |
6010 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6011 | rpc_restart_call_prepare(task); |
6012 | } | |
fbd4bfd1 CL |
6013 | } |
6014 | ||
d3c7b7cc TM |
6015 | static void nfs4_release_lockowner_release(void *calldata) |
6016 | { | |
cf470c3e | 6017 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6018 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6019 | kfree(calldata); |
6020 | } | |
6021 | ||
17280175 | 6022 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6023 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6024 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6025 | .rpc_release = nfs4_release_lockowner_release, |
6026 | }; | |
6027 | ||
f1cdae87 JL |
6028 | static void |
6029 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6030 | { |
cf470c3e | 6031 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6032 | struct rpc_message msg = { |
6033 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6034 | }; | |
6035 | ||
6036 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6037 | return; |
fbd4bfd1 | 6038 | |
cf470c3e TM |
6039 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6040 | if (!data) | |
f1cdae87 | 6041 | return; |
cf470c3e | 6042 | data->lsp = lsp; |
5ae67c4f | 6043 | data->server = server; |
cf470c3e TM |
6044 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6045 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6046 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6047 | |
cf470c3e | 6048 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6049 | msg.rpc_resp = &data->res; |
6050 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6051 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6052 | } |
6053 | ||
aa1870af BF |
6054 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6055 | ||
64c2ce8b AK |
6056 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
6057 | const void *buf, size_t buflen, | |
6058 | int flags, int type) | |
6b3b5496 | 6059 | { |
64c2ce8b AK |
6060 | if (strcmp(key, "") != 0) |
6061 | return -EINVAL; | |
4b580ee3 | 6062 | |
64c2ce8b | 6063 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
6064 | } |
6065 | ||
64c2ce8b AK |
6066 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
6067 | void *buf, size_t buflen, int type) | |
6b3b5496 | 6068 | { |
64c2ce8b AK |
6069 | if (strcmp(key, "") != 0) |
6070 | return -EINVAL; | |
aa1870af | 6071 | |
64c2ce8b | 6072 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
6073 | } |
6074 | ||
64c2ce8b AK |
6075 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
6076 | size_t list_len, const char *name, | |
6077 | size_t name_len, int type) | |
6b3b5496 | 6078 | { |
64c2ce8b | 6079 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 6080 | |
096455a2 BF |
6081 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
6082 | return 0; | |
64c2ce8b AK |
6083 | |
6084 | if (list && len <= list_len) | |
6085 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 6086 | return len; |
6b3b5496 BF |
6087 | } |
6088 | ||
c9bccef6 DQ |
6089 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6090 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
6091 | { | |
6092 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
6093 | } | |
6094 | ||
6095 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
6096 | const void *buf, size_t buflen, | |
6097 | int flags, int type) | |
6098 | { | |
6099 | if (security_ismaclabel(key)) | |
6100 | return nfs4_set_security_label(dentry, buf, buflen); | |
6101 | ||
6102 | return -EOPNOTSUPP; | |
6103 | } | |
6104 | ||
6105 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
6106 | void *buf, size_t buflen, int type) | |
6107 | { | |
6108 | if (security_ismaclabel(key)) | |
6109 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
6110 | return -EOPNOTSUPP; | |
6111 | } | |
6112 | ||
6113 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
6114 | size_t list_len, const char *name, | |
6115 | size_t name_len, int type) | |
6116 | { | |
6117 | size_t len = 0; | |
6118 | ||
6119 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
6120 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
6121 | if (list && len <= list_len) | |
6122 | security_inode_listsecurity(dentry->d_inode, list, len); | |
6123 | } | |
6124 | return len; | |
6125 | } | |
6126 | ||
6127 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6128 | .prefix = XATTR_SECURITY_PREFIX, | |
6129 | .list = nfs4_xattr_list_nfs4_label, | |
6130 | .get = nfs4_xattr_get_nfs4_label, | |
6131 | .set = nfs4_xattr_set_nfs4_label, | |
6132 | }; | |
6133 | #endif | |
6134 | ||
6135 | ||
533eb461 AA |
6136 | /* |
6137 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6138 | */ | |
69aaaae1 TM |
6139 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6140 | { | |
533eb461 AA |
6141 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6142 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6143 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6144 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6145 | return; |
6146 | ||
6147 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6148 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6149 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6150 | fattr->nlink = 2; | |
6151 | } | |
6152 | ||
f05d147f BS |
6153 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6154 | const struct qstr *name, | |
6155 | struct nfs4_fs_locations *fs_locations, | |
6156 | struct page *page) | |
683b57b4 TM |
6157 | { |
6158 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6159 | u32 bitmask[3] = { |
361e624f | 6160 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6161 | }; |
6162 | struct nfs4_fs_locations_arg args = { | |
6163 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6164 | .name = name, |
683b57b4 TM |
6165 | .page = page, |
6166 | .bitmask = bitmask, | |
6167 | }; | |
22958463 BH |
6168 | struct nfs4_fs_locations_res res = { |
6169 | .fs_locations = fs_locations, | |
6170 | }; | |
683b57b4 TM |
6171 | struct rpc_message msg = { |
6172 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6173 | .rpc_argp = &args, | |
22958463 | 6174 | .rpc_resp = &res, |
683b57b4 TM |
6175 | }; |
6176 | int status; | |
6177 | ||
3110ff80 | 6178 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6179 | |
6180 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6181 | * is not supported */ | |
6182 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6183 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6184 | else | |
6185 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6186 | ||
c228fd3a | 6187 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6188 | fs_locations->server = server; |
830b8e33 | 6189 | fs_locations->nlocations = 0; |
f05d147f | 6190 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6191 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6192 | return status; |
6193 | } | |
6194 | ||
f05d147f BS |
6195 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6196 | const struct qstr *name, | |
6197 | struct nfs4_fs_locations *fs_locations, | |
6198 | struct page *page) | |
db0a9593 BS |
6199 | { |
6200 | struct nfs4_exception exception = { }; | |
6201 | int err; | |
6202 | do { | |
078ea3df TM |
6203 | err = _nfs4_proc_fs_locations(client, dir, name, |
6204 | fs_locations, page); | |
6205 | trace_nfs4_get_fs_locations(dir, name, err); | |
6206 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6207 | &exception); |
6208 | } while (exception.retry); | |
6209 | return err; | |
6210 | } | |
6211 | ||
b03d735b CL |
6212 | /* |
6213 | * This operation also signals the server that this client is | |
6214 | * performing migration recovery. The server can stop returning | |
6215 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6216 | * appended to this compound to identify the client ID which is | |
6217 | * performing recovery. | |
6218 | */ | |
6219 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6220 | struct nfs4_fs_locations *locations, | |
6221 | struct page *page, struct rpc_cred *cred) | |
6222 | { | |
6223 | struct nfs_server *server = NFS_SERVER(inode); | |
6224 | struct rpc_clnt *clnt = server->client; | |
6225 | u32 bitmask[2] = { | |
6226 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6227 | }; | |
6228 | struct nfs4_fs_locations_arg args = { | |
6229 | .clientid = server->nfs_client->cl_clientid, | |
6230 | .fh = NFS_FH(inode), | |
6231 | .page = page, | |
6232 | .bitmask = bitmask, | |
6233 | .migration = 1, /* skip LOOKUP */ | |
6234 | .renew = 1, /* append RENEW */ | |
6235 | }; | |
6236 | struct nfs4_fs_locations_res res = { | |
6237 | .fs_locations = locations, | |
6238 | .migration = 1, | |
6239 | .renew = 1, | |
6240 | }; | |
6241 | struct rpc_message msg = { | |
6242 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6243 | .rpc_argp = &args, | |
6244 | .rpc_resp = &res, | |
6245 | .rpc_cred = cred, | |
6246 | }; | |
6247 | unsigned long now = jiffies; | |
6248 | int status; | |
6249 | ||
6250 | nfs_fattr_init(&locations->fattr); | |
6251 | locations->server = server; | |
6252 | locations->nlocations = 0; | |
6253 | ||
6254 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6255 | nfs4_set_sequence_privileged(&args.seq_args); | |
6256 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6257 | &args.seq_args, &res.seq_res); | |
6258 | if (status) | |
6259 | return status; | |
6260 | ||
6261 | renew_lease(server, now); | |
6262 | return 0; | |
6263 | } | |
6264 | ||
6265 | #ifdef CONFIG_NFS_V4_1 | |
6266 | ||
6267 | /* | |
6268 | * This operation also signals the server that this client is | |
6269 | * performing migration recovery. The server can stop asserting | |
6270 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6271 | * performing this operation is identified in the SEQUENCE | |
6272 | * operation in this compound. | |
6273 | * | |
6274 | * When the client supports GETATTR(fs_locations_info), it can | |
6275 | * be plumbed in here. | |
6276 | */ | |
6277 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6278 | struct nfs4_fs_locations *locations, | |
6279 | struct page *page, struct rpc_cred *cred) | |
6280 | { | |
6281 | struct nfs_server *server = NFS_SERVER(inode); | |
6282 | struct rpc_clnt *clnt = server->client; | |
6283 | u32 bitmask[2] = { | |
6284 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6285 | }; | |
6286 | struct nfs4_fs_locations_arg args = { | |
6287 | .fh = NFS_FH(inode), | |
6288 | .page = page, | |
6289 | .bitmask = bitmask, | |
6290 | .migration = 1, /* skip LOOKUP */ | |
6291 | }; | |
6292 | struct nfs4_fs_locations_res res = { | |
6293 | .fs_locations = locations, | |
6294 | .migration = 1, | |
6295 | }; | |
6296 | struct rpc_message msg = { | |
6297 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6298 | .rpc_argp = &args, | |
6299 | .rpc_resp = &res, | |
6300 | .rpc_cred = cred, | |
6301 | }; | |
6302 | int status; | |
6303 | ||
6304 | nfs_fattr_init(&locations->fattr); | |
6305 | locations->server = server; | |
6306 | locations->nlocations = 0; | |
6307 | ||
6308 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6309 | nfs4_set_sequence_privileged(&args.seq_args); | |
6310 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6311 | &args.seq_args, &res.seq_res); | |
6312 | if (status == NFS4_OK && | |
6313 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6314 | status = -NFS4ERR_LEASE_MOVED; | |
6315 | return status; | |
6316 | } | |
6317 | ||
6318 | #endif /* CONFIG_NFS_V4_1 */ | |
6319 | ||
6320 | /** | |
6321 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6322 | * @inode: inode on FSID that is migrating | |
6323 | * @locations: result of query | |
6324 | * @page: buffer | |
6325 | * @cred: credential to use for this operation | |
6326 | * | |
6327 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6328 | * operation failed, or a negative errno if a local error occurred. | |
6329 | * | |
6330 | * On success, "locations" is filled in, but if the server has | |
6331 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6332 | * asserted. | |
6333 | * | |
6334 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6335 | * from this client that require migration recovery. | |
6336 | */ | |
6337 | int nfs4_proc_get_locations(struct inode *inode, | |
6338 | struct nfs4_fs_locations *locations, | |
6339 | struct page *page, struct rpc_cred *cred) | |
6340 | { | |
6341 | struct nfs_server *server = NFS_SERVER(inode); | |
6342 | struct nfs_client *clp = server->nfs_client; | |
6343 | const struct nfs4_mig_recovery_ops *ops = | |
6344 | clp->cl_mvops->mig_recovery_ops; | |
6345 | struct nfs4_exception exception = { }; | |
6346 | int status; | |
6347 | ||
6348 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6349 | (unsigned long long)server->fsid.major, | |
6350 | (unsigned long long)server->fsid.minor, | |
6351 | clp->cl_hostname); | |
6352 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6353 | ||
6354 | do { | |
6355 | status = ops->get_locations(inode, locations, page, cred); | |
6356 | if (status != -NFS4ERR_DELAY) | |
6357 | break; | |
6358 | nfs4_handle_exception(server, status, &exception); | |
6359 | } while (exception.retry); | |
6360 | return status; | |
6361 | } | |
6362 | ||
44c99933 CL |
6363 | /* |
6364 | * This operation also signals the server that this client is | |
6365 | * performing "lease moved" recovery. The server can stop | |
6366 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6367 | * is appended to this compound to identify the client ID which is | |
6368 | * performing recovery. | |
6369 | */ | |
6370 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6371 | { | |
6372 | struct nfs_server *server = NFS_SERVER(inode); | |
6373 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6374 | struct rpc_clnt *clnt = server->client; | |
6375 | struct nfs4_fsid_present_arg args = { | |
6376 | .fh = NFS_FH(inode), | |
6377 | .clientid = clp->cl_clientid, | |
6378 | .renew = 1, /* append RENEW */ | |
6379 | }; | |
6380 | struct nfs4_fsid_present_res res = { | |
6381 | .renew = 1, | |
6382 | }; | |
6383 | struct rpc_message msg = { | |
6384 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6385 | .rpc_argp = &args, | |
6386 | .rpc_resp = &res, | |
6387 | .rpc_cred = cred, | |
6388 | }; | |
6389 | unsigned long now = jiffies; | |
6390 | int status; | |
6391 | ||
6392 | res.fh = nfs_alloc_fhandle(); | |
6393 | if (res.fh == NULL) | |
6394 | return -ENOMEM; | |
6395 | ||
6396 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6397 | nfs4_set_sequence_privileged(&args.seq_args); | |
6398 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6399 | &args.seq_args, &res.seq_res); | |
6400 | nfs_free_fhandle(res.fh); | |
6401 | if (status) | |
6402 | return status; | |
6403 | ||
6404 | do_renew_lease(clp, now); | |
6405 | return 0; | |
6406 | } | |
6407 | ||
6408 | #ifdef CONFIG_NFS_V4_1 | |
6409 | ||
6410 | /* | |
6411 | * This operation also signals the server that this client is | |
6412 | * performing "lease moved" recovery. The server can stop asserting | |
6413 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6414 | * this operation is identified in the SEQUENCE operation in this | |
6415 | * compound. | |
6416 | */ | |
6417 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6418 | { | |
6419 | struct nfs_server *server = NFS_SERVER(inode); | |
6420 | struct rpc_clnt *clnt = server->client; | |
6421 | struct nfs4_fsid_present_arg args = { | |
6422 | .fh = NFS_FH(inode), | |
6423 | }; | |
6424 | struct nfs4_fsid_present_res res = { | |
6425 | }; | |
6426 | struct rpc_message msg = { | |
6427 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6428 | .rpc_argp = &args, | |
6429 | .rpc_resp = &res, | |
6430 | .rpc_cred = cred, | |
6431 | }; | |
6432 | int status; | |
6433 | ||
6434 | res.fh = nfs_alloc_fhandle(); | |
6435 | if (res.fh == NULL) | |
6436 | return -ENOMEM; | |
6437 | ||
6438 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6439 | nfs4_set_sequence_privileged(&args.seq_args); | |
6440 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6441 | &args.seq_args, &res.seq_res); | |
6442 | nfs_free_fhandle(res.fh); | |
6443 | if (status == NFS4_OK && | |
6444 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6445 | status = -NFS4ERR_LEASE_MOVED; | |
6446 | return status; | |
6447 | } | |
6448 | ||
6449 | #endif /* CONFIG_NFS_V4_1 */ | |
6450 | ||
6451 | /** | |
6452 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6453 | * @inode: inode on FSID to check | |
6454 | * @cred: credential to use for this operation | |
6455 | * | |
6456 | * Server indicates whether the FSID is present, moved, or not | |
6457 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6458 | * condition for this client ID. | |
6459 | * | |
6460 | * Returns NFS4_OK if the FSID is present on this server, | |
6461 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6462 | * NFS4ERR code if some error occurred on the server, or a | |
6463 | * negative errno if a local failure occurred. | |
6464 | */ | |
6465 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6466 | { | |
6467 | struct nfs_server *server = NFS_SERVER(inode); | |
6468 | struct nfs_client *clp = server->nfs_client; | |
6469 | const struct nfs4_mig_recovery_ops *ops = | |
6470 | clp->cl_mvops->mig_recovery_ops; | |
6471 | struct nfs4_exception exception = { }; | |
6472 | int status; | |
6473 | ||
6474 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6475 | (unsigned long long)server->fsid.major, | |
6476 | (unsigned long long)server->fsid.minor, | |
6477 | clp->cl_hostname); | |
6478 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6479 | ||
6480 | do { | |
6481 | status = ops->fsid_present(inode, cred); | |
6482 | if (status != -NFS4ERR_DELAY) | |
6483 | break; | |
6484 | nfs4_handle_exception(server, status, &exception); | |
6485 | } while (exception.retry); | |
6486 | return status; | |
6487 | } | |
6488 | ||
5ec16a85 | 6489 | /** |
a5250def WAA |
6490 | * If 'use_integrity' is true and the state managment nfs_client |
6491 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6492 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6493 | * Considerations sections. Otherwise, just use the user cred with the | |
6494 | * filesystem's rpc_client. | |
5ec16a85 | 6495 | */ |
a5250def | 6496 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6497 | { |
6498 | int status; | |
6499 | struct nfs4_secinfo_arg args = { | |
6500 | .dir_fh = NFS_FH(dir), | |
6501 | .name = name, | |
6502 | }; | |
6503 | struct nfs4_secinfo_res res = { | |
6504 | .flavors = flavors, | |
6505 | }; | |
6506 | struct rpc_message msg = { | |
6507 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6508 | .rpc_argp = &args, | |
6509 | .rpc_resp = &res, | |
6510 | }; | |
a5250def | 6511 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6512 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6513 | |
6514 | if (use_integrity) { | |
6515 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6516 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6517 | msg.rpc_cred = cred; | |
a5250def | 6518 | } |
5a5ea0d4 BS |
6519 | |
6520 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6521 | |
6522 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6523 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6524 | ||
a5250def WAA |
6525 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6526 | &res.seq_res, 0); | |
5a5ea0d4 | 6527 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6528 | |
7cb852df WAA |
6529 | if (cred) |
6530 | put_rpccred(cred); | |
a5250def | 6531 | |
5a5ea0d4 BS |
6532 | return status; |
6533 | } | |
6534 | ||
72de53ec BS |
6535 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6536 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6537 | { |
6538 | struct nfs4_exception exception = { }; | |
6539 | int err; | |
6540 | do { | |
a5250def WAA |
6541 | err = -NFS4ERR_WRONGSEC; |
6542 | ||
6543 | /* try to use integrity protection with machine cred */ | |
6544 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6545 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6546 | ||
6547 | /* | |
6548 | * if unable to use integrity protection, or SECINFO with | |
6549 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6550 | * disallowed by spec, but exists in deployed servers) use | |
6551 | * the current filesystem's rpc_client and the user cred. | |
6552 | */ | |
6553 | if (err == -NFS4ERR_WRONGSEC) | |
6554 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6555 | ||
078ea3df TM |
6556 | trace_nfs4_secinfo(dir, name, err); |
6557 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6558 | &exception); |
6559 | } while (exception.retry); | |
6560 | return err; | |
6561 | } | |
6562 | ||
557134a3 | 6563 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6564 | /* |
6565 | * Check the exchange flags returned by the server for invalid flags, having | |
6566 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6567 | * DS flags set. | |
6568 | */ | |
6569 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6570 | { | |
6571 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6572 | goto out_inval; | |
6573 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6574 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6575 | goto out_inval; | |
6576 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6577 | goto out_inval; | |
6578 | return NFS_OK; | |
6579 | out_inval: | |
6580 | return -NFS4ERR_INVAL; | |
6581 | } | |
6582 | ||
78fe0f41 | 6583 | static bool |
79d4e1f0 CL |
6584 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6585 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6586 | { |
6587 | if (a->server_scope_sz == b->server_scope_sz && | |
6588 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6589 | return true; | |
6590 | ||
6591 | return false; | |
6592 | } | |
6593 | ||
7c44f1ae WAA |
6594 | /* |
6595 | * nfs4_proc_bind_conn_to_session() | |
6596 | * | |
6597 | * The 4.1 client currently uses the same TCP connection for the | |
6598 | * fore and backchannel. | |
6599 | */ | |
2cf047c9 | 6600 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6601 | { |
6602 | int status; | |
6603 | struct nfs41_bind_conn_to_session_res res; | |
6604 | struct rpc_message msg = { | |
6605 | .rpc_proc = | |
6606 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6607 | .rpc_argp = clp, | |
6608 | .rpc_resp = &res, | |
2cf047c9 | 6609 | .rpc_cred = cred, |
7c44f1ae WAA |
6610 | }; |
6611 | ||
6612 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6613 | |
6614 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6615 | if (unlikely(res.session == NULL)) { | |
6616 | status = -ENOMEM; | |
6617 | goto out; | |
6618 | } | |
6619 | ||
6620 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6621 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6622 | if (status == 0) { |
6623 | if (memcmp(res.session->sess_id.data, | |
6624 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6625 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6626 | status = -EIO; | |
6627 | goto out_session; | |
6628 | } | |
6629 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6630 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6631 | __func__); | |
6632 | status = -EIO; | |
6633 | goto out_session; | |
6634 | } | |
6635 | if (res.use_conn_in_rdma_mode) { | |
6636 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6637 | __func__); | |
6638 | status = -EIO; | |
6639 | goto out_session; | |
6640 | } | |
6641 | } | |
6642 | out_session: | |
6643 | kfree(res.session); | |
6644 | out: | |
6645 | dprintk("<-- %s status= %d\n", __func__, status); | |
6646 | return status; | |
6647 | } | |
6648 | ||
99fe60d0 | 6649 | /* |
fa940720 WAA |
6650 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6651 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6652 | */ |
6653 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6654 | .how = SP4_MACH_CRED, | |
6655 | .enforce.u.words = { | |
6656 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6657 | 1 << (OP_EXCHANGE_ID - 32) | | |
6658 | 1 << (OP_CREATE_SESSION - 32) | | |
6659 | 1 << (OP_DESTROY_SESSION - 32) | | |
6660 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6661 | }, |
6662 | .allow.u.words = { | |
6663 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6664 | 1 << (OP_LOCKU) | |
6665 | 1 << (OP_COMMIT), | |
8b5bee2e | 6666 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6667 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6668 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6669 | 1 << (OP_FREE_STATEID - 32) | |
6670 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6671 | } |
6672 | }; | |
6673 | ||
6674 | /* | |
6675 | * Select the state protection mode for client `clp' given the server results | |
6676 | * from exchange_id in `sp'. | |
99fe60d0 | 6677 | * |
2031cd1a WAA |
6678 | * Returns 0 on success, negative errno otherwise. |
6679 | */ | |
6680 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6681 | struct nfs41_state_protection *sp) | |
6682 | { | |
6683 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6684 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6685 | 1 << (OP_EXCHANGE_ID - 32) | | |
6686 | 1 << (OP_CREATE_SESSION - 32) | | |
6687 | 1 << (OP_DESTROY_SESSION - 32) | | |
6688 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6689 | }; | |
6690 | unsigned int i; | |
6691 | ||
6692 | if (sp->how == SP4_MACH_CRED) { | |
6693 | /* Print state protect result */ | |
6694 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6695 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6696 | if (test_bit(i, sp->enforce.u.longs)) | |
6697 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6698 | if (test_bit(i, sp->allow.u.longs)) | |
6699 | dfprintk(MOUNT, " allow op %d\n", i); | |
6700 | } | |
6701 | ||
6702 | /* make sure nothing is on enforce list that isn't supported */ | |
6703 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6704 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6705 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6706 | return -EINVAL; | |
6707 | } | |
6708 | } | |
6709 | ||
6710 | /* | |
6711 | * Minimal mode - state operations are allowed to use machine | |
6712 | * credential. Note this already happens by default, so the | |
6713 | * client doesn't have to do anything more than the negotiation. | |
6714 | * | |
6715 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6716 | * we're already using the machine cred for exchange_id | |
6717 | * and will never use a different cred. | |
6718 | */ | |
6719 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6720 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6721 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6722 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6723 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6724 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6725 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6726 | } else { | |
6727 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6728 | return -EINVAL; | |
6729 | } | |
fa940720 WAA |
6730 | |
6731 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6732 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6733 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6734 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6735 | } | |
8b5bee2e WAA |
6736 | |
6737 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6738 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6739 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6740 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6741 | } | |
3787d506 WAA |
6742 | |
6743 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6744 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6745 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6746 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6747 | } | |
8c21c62c WAA |
6748 | |
6749 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6750 | dfprintk(MOUNT, " write mode enabled\n"); | |
6751 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6752 | } | |
6753 | ||
6754 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6755 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6756 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6757 | } | |
2031cd1a WAA |
6758 | } |
6759 | ||
6760 | return 0; | |
6761 | } | |
6762 | ||
6763 | /* | |
6764 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6765 | * |
2031cd1a | 6766 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6767 | */ |
2031cd1a WAA |
6768 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6769 | u32 sp4_how) | |
99fe60d0 BH |
6770 | { |
6771 | nfs4_verifier verifier; | |
6772 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6773 | .verifier = &verifier, |
99fe60d0 | 6774 | .client = clp, |
cd3fadec | 6775 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6776 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6777 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6778 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6779 | #else | |
6780 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6781 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6782 | #endif | |
99fe60d0 BH |
6783 | }; |
6784 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6785 | 0 |
99fe60d0 BH |
6786 | }; |
6787 | int status; | |
6788 | struct rpc_message msg = { | |
6789 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6790 | .rpc_argp = &args, | |
6791 | .rpc_resp = &res, | |
6792 | .rpc_cred = cred, | |
6793 | }; | |
99fe60d0 | 6794 | |
f092075d | 6795 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6796 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6797 | sizeof(args.id)); | |
6bbb4ae8 CL |
6798 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6799 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6800 | args.id_len, args.id); | |
99fe60d0 | 6801 | |
acdeb69d | 6802 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6803 | GFP_NOFS); |
acdeb69d | 6804 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6805 | status = -ENOMEM; |
6806 | goto out; | |
6807 | } | |
78fe0f41 | 6808 | |
79d4e1f0 | 6809 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6810 | GFP_NOFS); |
177313f1 | 6811 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6812 | status = -ENOMEM; |
acdeb69d | 6813 | goto out_server_owner; |
abe9a6d5 | 6814 | } |
78fe0f41 | 6815 | |
bbafffd2 | 6816 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6817 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6818 | status = -ENOMEM; |
6819 | goto out_server_scope; | |
6820 | } | |
6821 | ||
2031cd1a WAA |
6822 | switch (sp4_how) { |
6823 | case SP4_NONE: | |
6824 | args.state_protect.how = SP4_NONE; | |
6825 | break; | |
6826 | ||
6827 | case SP4_MACH_CRED: | |
6828 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6829 | break; | |
6830 | ||
6831 | default: | |
6832 | /* unsupported! */ | |
6833 | WARN_ON_ONCE(1); | |
6834 | status = -EINVAL; | |
6835 | goto out_server_scope; | |
6836 | } | |
6837 | ||
1bd714f2 | 6838 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6839 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6840 | if (status == 0) |
32b01310 | 6841 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6842 | |
2031cd1a WAA |
6843 | if (status == 0) |
6844 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6845 | ||
acdeb69d | 6846 | if (status == 0) { |
32b01310 TM |
6847 | clp->cl_clientid = res.clientid; |
6848 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6849 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6850 | clp->cl_seqid = res.seqid; | |
6851 | ||
acdeb69d CL |
6852 | kfree(clp->cl_serverowner); |
6853 | clp->cl_serverowner = res.server_owner; | |
6854 | res.server_owner = NULL; | |
78fe0f41 | 6855 | |
7d2ed9ac | 6856 | /* use the most recent implementation id */ |
59155546 CL |
6857 | kfree(clp->cl_implid); |
6858 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6859 | |
177313f1 | 6860 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6861 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6862 | res.server_scope)) { |
6863 | dprintk("%s: server_scope mismatch detected\n", | |
6864 | __func__); | |
6865 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6866 | kfree(clp->cl_serverscope); |
6867 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6868 | } |
6869 | ||
177313f1 | 6870 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6871 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6872 | goto out; |
6873 | } | |
32b01310 TM |
6874 | } else |
6875 | kfree(res.impl_id); | |
7d2ed9ac | 6876 | |
acdeb69d CL |
6877 | out_server_owner: |
6878 | kfree(res.server_owner); | |
7d2ed9ac | 6879 | out_server_scope: |
abe9a6d5 WAA |
6880 | kfree(res.server_scope); |
6881 | out: | |
177313f1 | 6882 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6883 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6884 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6885 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6886 | clp->cl_implid->date.seconds, |
6887 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6888 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6889 | return status; |
6890 | } | |
6891 | ||
2031cd1a WAA |
6892 | /* |
6893 | * nfs4_proc_exchange_id() | |
6894 | * | |
6895 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6896 | * | |
6897 | * Since the clientid has expired, all compounds using sessions | |
6898 | * associated with the stale clientid will be returning | |
6899 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6900 | * be in some phase of session reset. | |
6901 | * | |
6902 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
6903 | */ | |
6904 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
6905 | { | |
6906 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
6907 | int status; | |
6908 | ||
6909 | /* try SP4_MACH_CRED if krb5i/p */ | |
6910 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
6911 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
6912 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
6913 | if (!status) | |
6914 | return 0; | |
6915 | } | |
6916 | ||
6917 | /* try SP4_NONE */ | |
6918 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
6919 | } | |
6920 | ||
66245539 TM |
6921 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6922 | struct rpc_cred *cred) | |
6923 | { | |
6924 | struct rpc_message msg = { | |
6925 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6926 | .rpc_argp = clp, | |
6927 | .rpc_cred = cred, | |
6928 | }; | |
6929 | int status; | |
6930 | ||
6931 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6932 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6933 | if (status) |
02c67525 | 6934 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6935 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6936 | return status; | |
6937 | } | |
6938 | ||
6939 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6940 | struct rpc_cred *cred) | |
6941 | { | |
6942 | unsigned int loop; | |
6943 | int ret; | |
6944 | ||
6945 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6946 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6947 | switch (ret) { | |
6948 | case -NFS4ERR_DELAY: | |
6949 | case -NFS4ERR_CLIENTID_BUSY: | |
6950 | ssleep(1); | |
6951 | break; | |
6952 | default: | |
6953 | return ret; | |
6954 | } | |
6955 | } | |
6956 | return 0; | |
6957 | } | |
6958 | ||
6959 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6960 | { | |
6961 | struct rpc_cred *cred; | |
6962 | int ret = 0; | |
6963 | ||
6964 | if (clp->cl_mvops->minor_version < 1) | |
6965 | goto out; | |
6966 | if (clp->cl_exchange_flags == 0) | |
6967 | goto out; | |
05f4c350 CL |
6968 | if (clp->cl_preserve_clid) |
6969 | goto out; | |
73d8bde5 | 6970 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6971 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6972 | if (cred) | |
6973 | put_rpccred(cred); | |
6974 | switch (ret) { | |
6975 | case 0: | |
6976 | case -NFS4ERR_STALE_CLIENTID: | |
6977 | clp->cl_exchange_flags = 0; | |
6978 | } | |
6979 | out: | |
6980 | return ret; | |
6981 | } | |
6982 | ||
2050f0cc AA |
6983 | struct nfs4_get_lease_time_data { |
6984 | struct nfs4_get_lease_time_args *args; | |
6985 | struct nfs4_get_lease_time_res *res; | |
6986 | struct nfs_client *clp; | |
6987 | }; | |
6988 | ||
6989 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6990 | void *calldata) | |
6991 | { | |
2050f0cc AA |
6992 | struct nfs4_get_lease_time_data *data = |
6993 | (struct nfs4_get_lease_time_data *)calldata; | |
6994 | ||
6995 | dprintk("--> %s\n", __func__); | |
6996 | /* just setup sequence, do not trigger session recovery | |
6997 | since we're invoked within one */ | |
d9afbd1b TM |
6998 | nfs41_setup_sequence(data->clp->cl_session, |
6999 | &data->args->la_seq_args, | |
7000 | &data->res->lr_seq_res, | |
7001 | task); | |
2050f0cc AA |
7002 | dprintk("<-- %s\n", __func__); |
7003 | } | |
7004 | ||
7005 | /* | |
7006 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7007 | * from sequence operation or clientid errors. | |
7008 | */ | |
7009 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7010 | { | |
7011 | struct nfs4_get_lease_time_data *data = | |
7012 | (struct nfs4_get_lease_time_data *)calldata; | |
7013 | ||
7014 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7015 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7016 | return; | |
2050f0cc AA |
7017 | switch (task->tk_status) { |
7018 | case -NFS4ERR_DELAY: | |
7019 | case -NFS4ERR_GRACE: | |
7020 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7021 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7022 | task->tk_status = 0; | |
a8a4ae3a AA |
7023 | /* fall through */ |
7024 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7025 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7026 | return; |
7027 | } | |
2050f0cc AA |
7028 | dprintk("<-- %s\n", __func__); |
7029 | } | |
7030 | ||
17280175 | 7031 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7032 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7033 | .rpc_call_done = nfs4_get_lease_time_done, | |
7034 | }; | |
7035 | ||
7036 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7037 | { | |
7038 | struct rpc_task *task; | |
7039 | struct nfs4_get_lease_time_args args; | |
7040 | struct nfs4_get_lease_time_res res = { | |
7041 | .lr_fsinfo = fsinfo, | |
7042 | }; | |
7043 | struct nfs4_get_lease_time_data data = { | |
7044 | .args = &args, | |
7045 | .res = &res, | |
7046 | .clp = clp, | |
7047 | }; | |
7048 | struct rpc_message msg = { | |
7049 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7050 | .rpc_argp = &args, | |
7051 | .rpc_resp = &res, | |
7052 | }; | |
7053 | struct rpc_task_setup task_setup = { | |
7054 | .rpc_client = clp->cl_rpcclient, | |
7055 | .rpc_message = &msg, | |
7056 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7057 | .callback_data = &data, |
7058 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7059 | }; |
7060 | int status; | |
7061 | ||
a9c92d6b | 7062 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7063 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7064 | dprintk("--> %s\n", __func__); |
7065 | task = rpc_run_task(&task_setup); | |
7066 | ||
7067 | if (IS_ERR(task)) | |
7068 | status = PTR_ERR(task); | |
7069 | else { | |
7070 | status = task->tk_status; | |
7071 | rpc_put_task(task); | |
7072 | } | |
7073 | dprintk("<-- %s return %d\n", __func__, status); | |
7074 | ||
7075 | return status; | |
7076 | } | |
7077 | ||
fc931582 AA |
7078 | /* |
7079 | * Initialize the values to be used by the client in CREATE_SESSION | |
7080 | * If nfs4_init_session set the fore channel request and response sizes, | |
7081 | * use them. | |
7082 | * | |
7083 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7084 | * always set csa_cachethis to FALSE because the current implementation | |
7085 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7086 | */ | |
7087 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7088 | { | |
18aad3d5 AA |
7089 | unsigned int max_rqst_sz, max_resp_sz; |
7090 | ||
7091 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7092 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7093 | |
fc931582 | 7094 | /* Fore channel attributes */ |
18aad3d5 AA |
7095 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7096 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7097 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7098 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7099 | |
7100 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7101 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7102 | __func__, |
7103 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7104 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7105 | |
7106 | /* Back channel attributes */ | |
fc931582 AA |
7107 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7108 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7109 | args->bc_attrs.max_resp_sz_cached = 0; | |
7110 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
7111 | args->bc_attrs.max_reqs = 1; | |
7112 | ||
7113 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7114 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7115 | __func__, | |
7116 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7117 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7118 | args->bc_attrs.max_reqs); | |
7119 | } | |
7120 | ||
43c2e885 | 7121 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 7122 | { |
43c2e885 BF |
7123 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
7124 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
7125 | ||
43c2e885 BF |
7126 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7127 | return -EINVAL; | |
7128 | /* | |
7129 | * Our requested max_ops is the minimum we need; we're not | |
7130 | * prepared to break up compounds into smaller pieces than that. | |
7131 | * So, no point even trying to continue if the server won't | |
7132 | * cooperate: | |
7133 | */ | |
7134 | if (rcvd->max_ops < sent->max_ops) | |
7135 | return -EINVAL; | |
7136 | if (rcvd->max_reqs == 0) | |
7137 | return -EINVAL; | |
b4b9a0c1 VG |
7138 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7139 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7140 | return 0; |
8d35301d AA |
7141 | } |
7142 | ||
43c2e885 BF |
7143 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
7144 | { | |
7145 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
7146 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 7147 | |
43c2e885 BF |
7148 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7149 | return -EINVAL; | |
7150 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7151 | return -EINVAL; | |
7152 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7153 | return -EINVAL; | |
7154 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7155 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7156 | return -EINVAL; |
b4b9a0c1 | 7157 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
7158 | return -EINVAL; |
7159 | return 0; | |
7160 | } | |
8d35301d | 7161 | |
8d35301d AA |
7162 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
7163 | struct nfs4_session *session) | |
7164 | { | |
43c2e885 | 7165 | int ret; |
8d35301d | 7166 | |
43c2e885 BF |
7167 | ret = nfs4_verify_fore_channel_attrs(args, session); |
7168 | if (ret) | |
7169 | return ret; | |
7170 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
7171 | } |
7172 | ||
848f5bda TM |
7173 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7174 | struct rpc_cred *cred) | |
fc931582 AA |
7175 | { |
7176 | struct nfs4_session *session = clp->cl_session; | |
7177 | struct nfs41_create_session_args args = { | |
7178 | .client = clp, | |
7179 | .cb_program = NFS4_CALLBACK, | |
7180 | }; | |
7181 | struct nfs41_create_session_res res = { | |
7182 | .client = clp, | |
7183 | }; | |
7184 | struct rpc_message msg = { | |
7185 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7186 | .rpc_argp = &args, | |
7187 | .rpc_resp = &res, | |
848f5bda | 7188 | .rpc_cred = cred, |
fc931582 AA |
7189 | }; |
7190 | int status; | |
7191 | ||
7192 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7193 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7194 | |
1bd714f2 | 7195 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7196 | trace_nfs4_create_session(clp, status); |
fc931582 | 7197 | |
43095d39 | 7198 | if (!status) { |
8d35301d AA |
7199 | /* Verify the session's negotiated channel_attrs values */ |
7200 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
7201 | /* Increment the clientid slot sequence id */ |
7202 | clp->cl_seqid++; | |
7203 | } | |
7204 | ||
7205 | return status; | |
7206 | } | |
7207 | ||
7208 | /* | |
7209 | * Issues a CREATE_SESSION operation to the server. | |
7210 | * It is the responsibility of the caller to verify the session is | |
7211 | * expired before calling this routine. | |
7212 | */ | |
848f5bda | 7213 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7214 | { |
7215 | int status; | |
7216 | unsigned *ptr; | |
fc931582 AA |
7217 | struct nfs4_session *session = clp->cl_session; |
7218 | ||
7219 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7220 | ||
848f5bda | 7221 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7222 | if (status) |
7223 | goto out; | |
7224 | ||
aacd5537 AA |
7225 | /* Init or reset the session slot tables */ |
7226 | status = nfs4_setup_session_slot_tables(session); | |
7227 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7228 | if (status) |
7229 | goto out; | |
7230 | ||
7231 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7232 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7233 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7234 | out: |
7235 | dprintk("<-- %s\n", __func__); | |
7236 | return status; | |
7237 | } | |
7238 | ||
0f3e66c6 AA |
7239 | /* |
7240 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7241 | * The caller must serialize access to this routine. | |
7242 | */ | |
848f5bda TM |
7243 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7244 | struct rpc_cred *cred) | |
0f3e66c6 | 7245 | { |
848f5bda TM |
7246 | struct rpc_message msg = { |
7247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7248 | .rpc_argp = session, | |
7249 | .rpc_cred = cred, | |
7250 | }; | |
0f3e66c6 | 7251 | int status = 0; |
0f3e66c6 AA |
7252 | |
7253 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7254 | ||
7255 | /* session is still being setup */ | |
7256 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
7257 | return status; | |
7258 | ||
1bd714f2 | 7259 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7260 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7261 | |
7262 | if (status) | |
08106ac7 | 7263 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7264 | "Session has been destroyed regardless...\n", status); |
7265 | ||
7266 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7267 | return status; | |
7268 | } | |
7269 | ||
fc01cea9 AA |
7270 | /* |
7271 | * Renew the cl_session lease. | |
7272 | */ | |
d5f8d3fe TM |
7273 | struct nfs4_sequence_data { |
7274 | struct nfs_client *clp; | |
7275 | struct nfs4_sequence_args args; | |
7276 | struct nfs4_sequence_res res; | |
7277 | }; | |
7278 | ||
dc96aef9 AB |
7279 | static void nfs41_sequence_release(void *data) |
7280 | { | |
d5f8d3fe TM |
7281 | struct nfs4_sequence_data *calldata = data; |
7282 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7283 | |
7135840f AB |
7284 | if (atomic_read(&clp->cl_count) > 1) |
7285 | nfs4_schedule_state_renewal(clp); | |
7286 | nfs_put_client(clp); | |
d5f8d3fe | 7287 | kfree(calldata); |
dc96aef9 AB |
7288 | } |
7289 | ||
aa5190d0 TM |
7290 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7291 | { | |
7292 | switch(task->tk_status) { | |
7293 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7294 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7295 | return -EAGAIN; | |
7296 | default: | |
0400a6b0 | 7297 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7298 | } |
7299 | return 0; | |
7300 | } | |
7301 | ||
dc96aef9 | 7302 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7303 | { |
d5f8d3fe TM |
7304 | struct nfs4_sequence_data *calldata = data; |
7305 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7306 | |
14516c3a TM |
7307 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7308 | return; | |
fc01cea9 | 7309 | |
c6d01c6f | 7310 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7311 | if (task->tk_status < 0) { |
7312 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7313 | if (atomic_read(&clp->cl_count) == 1) |
7314 | goto out; | |
fc01cea9 | 7315 | |
aa5190d0 TM |
7316 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7317 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7318 | return; |
7319 | } | |
7320 | } | |
fc01cea9 | 7321 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7322 | out: |
fc01cea9 AA |
7323 | dprintk("<-- %s\n", __func__); |
7324 | } | |
7325 | ||
7326 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7327 | { | |
d5f8d3fe TM |
7328 | struct nfs4_sequence_data *calldata = data; |
7329 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7330 | struct nfs4_sequence_args *args; |
7331 | struct nfs4_sequence_res *res; | |
7332 | ||
fc01cea9 AA |
7333 | args = task->tk_msg.rpc_argp; |
7334 | res = task->tk_msg.rpc_resp; | |
7335 | ||
d9afbd1b | 7336 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7337 | } |
7338 | ||
7339 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7340 | .rpc_call_done = nfs41_sequence_call_done, | |
7341 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7342 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7343 | }; |
7344 | ||
8fe72bac TM |
7345 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7346 | struct rpc_cred *cred, | |
7347 | bool is_privileged) | |
fc01cea9 | 7348 | { |
d5f8d3fe | 7349 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7350 | struct rpc_message msg = { |
7351 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7352 | .rpc_cred = cred, | |
7353 | }; | |
71ac6da9 TM |
7354 | struct rpc_task_setup task_setup_data = { |
7355 | .rpc_client = clp->cl_rpcclient, | |
7356 | .rpc_message = &msg, | |
8fe72bac | 7357 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7358 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7359 | }; |
fc01cea9 | 7360 | |
7135840f | 7361 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7362 | return ERR_PTR(-EIO); |
dfb4f309 | 7363 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7364 | if (calldata == NULL) { |
7135840f | 7365 | nfs_put_client(clp); |
71ac6da9 | 7366 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7367 | } |
a9c92d6b | 7368 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7369 | if (is_privileged) |
7370 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7371 | msg.rpc_argp = &calldata->args; |
7372 | msg.rpc_resp = &calldata->res; | |
7373 | calldata->clp = clp; | |
71ac6da9 | 7374 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7375 | |
71ac6da9 TM |
7376 | return rpc_run_task(&task_setup_data); |
7377 | } | |
7378 | ||
2f60ea6b | 7379 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7380 | { |
7381 | struct rpc_task *task; | |
7382 | int ret = 0; | |
7383 | ||
2f60ea6b | 7384 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7385 | return -EAGAIN; |
8fe72bac | 7386 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7387 | if (IS_ERR(task)) |
7388 | ret = PTR_ERR(task); | |
7389 | else | |
bf294b41 | 7390 | rpc_put_task_async(task); |
71ac6da9 TM |
7391 | dprintk("<-- %s status=%d\n", __func__, ret); |
7392 | return ret; | |
7393 | } | |
7394 | ||
7395 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7396 | { | |
7397 | struct rpc_task *task; | |
7398 | int ret; | |
7399 | ||
8fe72bac | 7400 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7401 | if (IS_ERR(task)) { |
7402 | ret = PTR_ERR(task); | |
7403 | goto out; | |
7404 | } | |
7405 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
7406 | if (!ret) { |
7407 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
7408 | ||
7409 | if (task->tk_status == 0) | |
7410 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 7411 | ret = task->tk_status; |
b4410c2f | 7412 | } |
71ac6da9 TM |
7413 | rpc_put_task(task); |
7414 | out: | |
7415 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7416 | return ret; | |
fc01cea9 AA |
7417 | } |
7418 | ||
fce5c838 RL |
7419 | struct nfs4_reclaim_complete_data { |
7420 | struct nfs_client *clp; | |
7421 | struct nfs41_reclaim_complete_args arg; | |
7422 | struct nfs41_reclaim_complete_res res; | |
7423 | }; | |
7424 | ||
7425 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7426 | { | |
7427 | struct nfs4_reclaim_complete_data *calldata = data; | |
7428 | ||
d9afbd1b TM |
7429 | nfs41_setup_sequence(calldata->clp->cl_session, |
7430 | &calldata->arg.seq_args, | |
7431 | &calldata->res.seq_res, | |
7432 | task); | |
fce5c838 RL |
7433 | } |
7434 | ||
aa5190d0 TM |
7435 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7436 | { | |
7437 | switch(task->tk_status) { | |
7438 | case 0: | |
7439 | case -NFS4ERR_COMPLETE_ALREADY: | |
7440 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7441 | break; | |
7442 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7443 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7444 | /* fall through */ |
7445 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7446 | return -EAGAIN; |
7447 | default: | |
0400a6b0 | 7448 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7449 | } |
7450 | return 0; | |
7451 | } | |
7452 | ||
fce5c838 RL |
7453 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7454 | { | |
7455 | struct nfs4_reclaim_complete_data *calldata = data; | |
7456 | struct nfs_client *clp = calldata->clp; | |
7457 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7458 | ||
7459 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7460 | if (!nfs41_sequence_done(task, res)) |
7461 | return; | |
fce5c838 | 7462 | |
c6d01c6f | 7463 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7464 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7465 | rpc_restart_call_prepare(task); | |
7466 | return; | |
7467 | } | |
fce5c838 RL |
7468 | dprintk("<-- %s\n", __func__); |
7469 | } | |
7470 | ||
7471 | static void nfs4_free_reclaim_complete_data(void *data) | |
7472 | { | |
7473 | struct nfs4_reclaim_complete_data *calldata = data; | |
7474 | ||
7475 | kfree(calldata); | |
7476 | } | |
7477 | ||
7478 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7479 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7480 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7481 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7482 | }; | |
7483 | ||
7484 | /* | |
7485 | * Issue a global reclaim complete. | |
7486 | */ | |
965e9c23 TM |
7487 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7488 | struct rpc_cred *cred) | |
fce5c838 RL |
7489 | { |
7490 | struct nfs4_reclaim_complete_data *calldata; | |
7491 | struct rpc_task *task; | |
7492 | struct rpc_message msg = { | |
7493 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7494 | .rpc_cred = cred, |
fce5c838 RL |
7495 | }; |
7496 | struct rpc_task_setup task_setup_data = { | |
7497 | .rpc_client = clp->cl_rpcclient, | |
7498 | .rpc_message = &msg, | |
7499 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7500 | .flags = RPC_TASK_ASYNC, | |
7501 | }; | |
7502 | int status = -ENOMEM; | |
7503 | ||
7504 | dprintk("--> %s\n", __func__); | |
8535b2be | 7505 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7506 | if (calldata == NULL) |
7507 | goto out; | |
7508 | calldata->clp = clp; | |
7509 | calldata->arg.one_fs = 0; | |
fce5c838 | 7510 | |
a9c92d6b | 7511 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7512 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7513 | msg.rpc_argp = &calldata->arg; |
7514 | msg.rpc_resp = &calldata->res; | |
7515 | task_setup_data.callback_data = calldata; | |
7516 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7517 | if (IS_ERR(task)) { |
fce5c838 | 7518 | status = PTR_ERR(task); |
acf82b85 DC |
7519 | goto out; |
7520 | } | |
c34c32ea AA |
7521 | status = nfs4_wait_for_completion_rpc_task(task); |
7522 | if (status == 0) | |
7523 | status = task->tk_status; | |
fce5c838 | 7524 | rpc_put_task(task); |
acf82b85 | 7525 | return 0; |
fce5c838 RL |
7526 | out: |
7527 | dprintk("<-- %s status=%d\n", __func__, status); | |
7528 | return status; | |
7529 | } | |
b1f69b75 AA |
7530 | |
7531 | static void | |
7532 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7533 | { | |
7534 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7535 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7536 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7537 | |
7538 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7539 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7540 | * right now covering the LAYOUTGET we are about to send. | |
7541 | * However, that is not so catastrophic, and there seems | |
7542 | * to be no way to prevent it completely. | |
7543 | */ | |
6ba7db34 | 7544 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7545 | &lgp->res.seq_res, task)) |
b1f69b75 | 7546 | return; |
cf7d63f1 FI |
7547 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7548 | NFS_I(lgp->args.inode)->layout, | |
7549 | lgp->args.ctx->state)) { | |
7550 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7551 | } |
b1f69b75 AA |
7552 | } |
7553 | ||
7554 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7555 | { | |
7556 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7557 | struct inode *inode = lgp->args.inode; |
7558 | struct nfs_server *server = NFS_SERVER(inode); | |
7559 | struct pnfs_layout_hdr *lo; | |
7560 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7561 | unsigned long timeo, now, giveup; |
b1f69b75 | 7562 | |
ed7e5423 | 7563 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7564 | |
6ba7db34 | 7565 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7566 | goto out; |
b1f69b75 AA |
7567 | |
7568 | switch (task->tk_status) { | |
7569 | case 0: | |
ee314c2a | 7570 | goto out; |
ed7e5423 BH |
7571 | /* |
7572 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
7573 | * (or clients) writing to the same RAID stripe | |
7574 | */ | |
b1f69b75 | 7575 | case -NFS4ERR_LAYOUTTRYLATER: |
ed7e5423 BH |
7576 | /* |
7577 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7578 | * existing layout before getting a new one). | |
7579 | */ | |
b1f69b75 | 7580 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7581 | timeo = rpc_get_timeout(task->tk_client); |
7582 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7583 | now = jiffies; |
7584 | if (time_after(giveup, now)) { | |
7585 | unsigned long delay; | |
7586 | ||
7587 | /* Delay for: | |
7588 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7589 | * - One last time a jiffie before we give up | |
7590 | * - exponential backoff (time_now minus start_attempt) | |
7591 | */ | |
7592 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7593 | min((giveup - now - 1), | |
7594 | now - lgp->args.timestamp)); | |
7595 | ||
7596 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7597 | __func__, delay); | |
7598 | rpc_delay(task, delay); | |
7599 | task->tk_status = 0; | |
7600 | rpc_restart_call_prepare(task); | |
7601 | goto out; /* Do not call nfs4_async_handle_error() */ | |
7602 | } | |
ee314c2a TM |
7603 | break; |
7604 | case -NFS4ERR_EXPIRED: | |
7605 | case -NFS4ERR_BAD_STATEID: | |
7606 | spin_lock(&inode->i_lock); | |
7607 | lo = NFS_I(inode)->layout; | |
7608 | if (!lo || list_empty(&lo->plh_segs)) { | |
7609 | spin_unlock(&inode->i_lock); | |
7610 | /* If the open stateid was bad, then recover it. */ | |
7611 | state = lgp->args.ctx->state; | |
7612 | } else { | |
7613 | LIST_HEAD(head); | |
7614 | ||
defb8460 CH |
7615 | /* |
7616 | * Mark the bad layout state as invalid, then retry | |
7617 | * with the current stateid. | |
7618 | */ | |
ee314c2a TM |
7619 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7620 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7621 | pnfs_free_lseg_list(&head); |
defb8460 CH |
7622 | |
7623 | task->tk_status = 0; | |
7624 | rpc_restart_call_prepare(task); | |
b1f69b75 AA |
7625 | } |
7626 | } | |
8478eaa1 | 7627 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) |
ee314c2a TM |
7628 | rpc_restart_call_prepare(task); |
7629 | out: | |
b1f69b75 AA |
7630 | dprintk("<-- %s\n", __func__); |
7631 | } | |
7632 | ||
8554116e IK |
7633 | static size_t max_response_pages(struct nfs_server *server) |
7634 | { | |
7635 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7636 | return nfs_page_array_len(0, max_resp_sz); | |
7637 | } | |
7638 | ||
7639 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7640 | { | |
7641 | int i; | |
7642 | ||
7643 | if (!pages) | |
7644 | return; | |
7645 | ||
7646 | for (i = 0; i < size; i++) { | |
7647 | if (!pages[i]) | |
7648 | break; | |
7649 | __free_page(pages[i]); | |
7650 | } | |
7651 | kfree(pages); | |
7652 | } | |
7653 | ||
7654 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7655 | { | |
7656 | struct page **pages; | |
7657 | int i; | |
7658 | ||
7659 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7660 | if (!pages) { | |
7661 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7662 | return NULL; | |
7663 | } | |
7664 | ||
7665 | for (i = 0; i < size; i++) { | |
7666 | pages[i] = alloc_page(gfp_flags); | |
7667 | if (!pages[i]) { | |
7668 | dprintk("%s: failed to allocate page\n", __func__); | |
7669 | nfs4_free_pages(pages, size); | |
7670 | return NULL; | |
7671 | } | |
7672 | } | |
7673 | ||
7674 | return pages; | |
7675 | } | |
7676 | ||
b1f69b75 AA |
7677 | static void nfs4_layoutget_release(void *calldata) |
7678 | { | |
7679 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7680 | struct inode *inode = lgp->args.inode; |
7681 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7682 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7683 | |
7684 | dprintk("--> %s\n", __func__); | |
8554116e | 7685 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7686 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7687 | put_nfs_open_context(lgp->args.ctx); |
7688 | kfree(calldata); | |
7689 | dprintk("<-- %s\n", __func__); | |
7690 | } | |
7691 | ||
7692 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7693 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7694 | .rpc_call_done = nfs4_layoutget_done, | |
7695 | .rpc_release = nfs4_layoutget_release, | |
7696 | }; | |
7697 | ||
a0b0a6e3 TM |
7698 | struct pnfs_layout_segment * |
7699 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7700 | { |
a47970ff WAA |
7701 | struct inode *inode = lgp->args.inode; |
7702 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7703 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7704 | struct rpc_task *task; |
7705 | struct rpc_message msg = { | |
7706 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7707 | .rpc_argp = &lgp->args, | |
7708 | .rpc_resp = &lgp->res, | |
6ab59344 | 7709 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7710 | }; |
7711 | struct rpc_task_setup task_setup_data = { | |
7712 | .rpc_client = server->client, | |
7713 | .rpc_message = &msg, | |
7714 | .callback_ops = &nfs4_layoutget_call_ops, | |
7715 | .callback_data = lgp, | |
7716 | .flags = RPC_TASK_ASYNC, | |
7717 | }; | |
a0b0a6e3 | 7718 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7719 | int status = 0; |
7720 | ||
7721 | dprintk("--> %s\n", __func__); | |
7722 | ||
8554116e IK |
7723 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7724 | if (!lgp->args.layout.pages) { | |
7725 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7726 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7727 | } |
7728 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7729 | lgp->args.timestamp = jiffies; |
8554116e | 7730 | |
35124a09 | 7731 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7732 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7733 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
7734 | |
7735 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
7736 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7737 | ||
b1f69b75 AA |
7738 | task = rpc_run_task(&task_setup_data); |
7739 | if (IS_ERR(task)) | |
a0b0a6e3 | 7740 | return ERR_CAST(task); |
b1f69b75 | 7741 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7742 | if (status == 0) |
7743 | status = task->tk_status; | |
1037e6ea TM |
7744 | trace_nfs4_layoutget(lgp->args.ctx, |
7745 | &lgp->args.range, | |
7746 | &lgp->res.range, | |
7747 | status); | |
085b7a45 WAA |
7748 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7749 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7750 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7751 | rpc_put_task(task); |
7752 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7753 | if (status) |
7754 | return ERR_PTR(status); | |
7755 | return lseg; | |
b1f69b75 AA |
7756 | } |
7757 | ||
cbe82603 BH |
7758 | static void |
7759 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7760 | { | |
7761 | struct nfs4_layoutreturn *lrp = calldata; | |
7762 | ||
7763 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7764 | nfs41_setup_sequence(lrp->clp->cl_session, |
7765 | &lrp->args.seq_args, | |
7766 | &lrp->res.seq_res, | |
7767 | task); | |
cbe82603 BH |
7768 | } |
7769 | ||
7770 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7771 | { | |
7772 | struct nfs4_layoutreturn *lrp = calldata; | |
7773 | struct nfs_server *server; | |
7774 | ||
7775 | dprintk("--> %s\n", __func__); | |
7776 | ||
6ba7db34 | 7777 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7778 | return; |
7779 | ||
7780 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
7781 | switch (task->tk_status) { |
7782 | default: | |
7783 | task->tk_status = 0; | |
7784 | case 0: | |
7785 | break; | |
7786 | case -NFS4ERR_DELAY: | |
8478eaa1 | 7787 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 7788 | break; |
d00c5d43 | 7789 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7790 | return; |
7791 | } | |
cbe82603 BH |
7792 | dprintk("<-- %s\n", __func__); |
7793 | } | |
7794 | ||
7795 | static void nfs4_layoutreturn_release(void *calldata) | |
7796 | { | |
7797 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7798 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7799 | |
7800 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7801 | spin_lock(&lo->plh_inode->i_lock); |
7802 | if (lrp->res.lrs_present) | |
7803 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7804 | lo->plh_block_lgets--; | |
7805 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7806 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7807 | kfree(calldata); |
7808 | dprintk("<-- %s\n", __func__); | |
7809 | } | |
7810 | ||
7811 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7812 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7813 | .rpc_call_done = nfs4_layoutreturn_done, | |
7814 | .rpc_release = nfs4_layoutreturn_release, | |
7815 | }; | |
7816 | ||
7817 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7818 | { | |
7819 | struct rpc_task *task; | |
7820 | struct rpc_message msg = { | |
7821 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7822 | .rpc_argp = &lrp->args, | |
7823 | .rpc_resp = &lrp->res, | |
9556000d | 7824 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7825 | }; |
7826 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7827 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7828 | .rpc_message = &msg, |
7829 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7830 | .callback_data = lrp, | |
7831 | }; | |
7832 | int status; | |
7833 | ||
7834 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7835 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7836 | task = rpc_run_task(&task_setup_data); |
7837 | if (IS_ERR(task)) | |
7838 | return PTR_ERR(task); | |
7839 | status = task->tk_status; | |
1037e6ea | 7840 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7841 | dprintk("<-- %s status=%d\n", __func__, status); |
7842 | rpc_put_task(task); | |
7843 | return status; | |
7844 | } | |
7845 | ||
b1f69b75 | 7846 | static int |
cd5875fe TM |
7847 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7848 | struct pnfs_device *pdev, | |
7849 | struct rpc_cred *cred) | |
b1f69b75 AA |
7850 | { |
7851 | struct nfs4_getdeviceinfo_args args = { | |
7852 | .pdev = pdev, | |
7853 | }; | |
7854 | struct nfs4_getdeviceinfo_res res = { | |
7855 | .pdev = pdev, | |
7856 | }; | |
7857 | struct rpc_message msg = { | |
7858 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7859 | .rpc_argp = &args, | |
7860 | .rpc_resp = &res, | |
cd5875fe | 7861 | .rpc_cred = cred, |
b1f69b75 AA |
7862 | }; |
7863 | int status; | |
7864 | ||
7865 | dprintk("--> %s\n", __func__); | |
7c513058 | 7866 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7867 | dprintk("<-- %s status=%d\n", __func__, status); |
7868 | ||
7869 | return status; | |
7870 | } | |
7871 | ||
cd5875fe TM |
7872 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7873 | struct pnfs_device *pdev, | |
7874 | struct rpc_cred *cred) | |
b1f69b75 AA |
7875 | { |
7876 | struct nfs4_exception exception = { }; | |
7877 | int err; | |
7878 | ||
7879 | do { | |
7880 | err = nfs4_handle_exception(server, | |
cd5875fe | 7881 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7882 | &exception); |
7883 | } while (exception.retry); | |
7884 | return err; | |
7885 | } | |
7886 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7887 | ||
863a3c6c AA |
7888 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7889 | { | |
7890 | struct nfs4_layoutcommit_data *data = calldata; | |
7891 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7892 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7893 | |
d9afbd1b TM |
7894 | nfs41_setup_sequence(session, |
7895 | &data->args.seq_args, | |
7896 | &data->res.seq_res, | |
7897 | task); | |
863a3c6c AA |
7898 | } |
7899 | ||
7900 | static void | |
7901 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7902 | { | |
7903 | struct nfs4_layoutcommit_data *data = calldata; | |
7904 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7905 | ||
6ba7db34 | 7906 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7907 | return; |
7908 | ||
7909 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7910 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7911 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7912 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7913 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7914 | task->tk_status = 0; |
e59d27e0 | 7915 | case 0: |
e59d27e0 TM |
7916 | break; |
7917 | default: | |
8478eaa1 | 7918 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
7919 | rpc_restart_call_prepare(task); |
7920 | return; | |
7921 | } | |
7922 | } | |
863a3c6c AA |
7923 | } |
7924 | ||
7925 | static void nfs4_layoutcommit_release(void *calldata) | |
7926 | { | |
7927 | struct nfs4_layoutcommit_data *data = calldata; | |
7928 | ||
db29c089 | 7929 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
7930 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7931 | data->res.fattr); | |
863a3c6c AA |
7932 | put_rpccred(data->cred); |
7933 | kfree(data); | |
7934 | } | |
7935 | ||
7936 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7937 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7938 | .rpc_call_done = nfs4_layoutcommit_done, | |
7939 | .rpc_release = nfs4_layoutcommit_release, | |
7940 | }; | |
7941 | ||
7942 | int | |
ef311537 | 7943 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7944 | { |
7945 | struct rpc_message msg = { | |
7946 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7947 | .rpc_argp = &data->args, | |
7948 | .rpc_resp = &data->res, | |
7949 | .rpc_cred = data->cred, | |
7950 | }; | |
7951 | struct rpc_task_setup task_setup_data = { | |
7952 | .task = &data->task, | |
7953 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7954 | .rpc_message = &msg, | |
7955 | .callback_ops = &nfs4_layoutcommit_ops, | |
7956 | .callback_data = data, | |
7957 | .flags = RPC_TASK_ASYNC, | |
7958 | }; | |
7959 | struct rpc_task *task; | |
7960 | int status = 0; | |
7961 | ||
7962 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7963 | "lbw: %llu inode %lu\n", | |
7964 | data->task.tk_pid, sync, | |
7965 | data->args.lastbytewritten, | |
7966 | data->args.inode->i_ino); | |
7967 | ||
a9c92d6b | 7968 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7969 | task = rpc_run_task(&task_setup_data); |
7970 | if (IS_ERR(task)) | |
7971 | return PTR_ERR(task); | |
ef311537 | 7972 | if (sync == false) |
863a3c6c AA |
7973 | goto out; |
7974 | status = nfs4_wait_for_completion_rpc_task(task); | |
7975 | if (status != 0) | |
7976 | goto out; | |
7977 | status = task->tk_status; | |
1037e6ea | 7978 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7979 | out: |
7980 | dprintk("%s: status %d\n", __func__, status); | |
7981 | rpc_put_task(task); | |
7982 | return status; | |
7983 | } | |
fca78d6d | 7984 | |
97431204 AA |
7985 | /** |
7986 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7987 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7988 | */ | |
fca78d6d BS |
7989 | static int |
7990 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
7991 | struct nfs_fsinfo *info, |
7992 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
7993 | { |
7994 | struct nfs41_secinfo_no_name_args args = { | |
7995 | .style = SECINFO_STYLE_CURRENT_FH, | |
7996 | }; | |
7997 | struct nfs4_secinfo_res res = { | |
7998 | .flavors = flavors, | |
7999 | }; | |
8000 | struct rpc_message msg = { | |
8001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8002 | .rpc_argp = &args, | |
8003 | .rpc_resp = &res, | |
8004 | }; | |
b1b3e136 | 8005 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8006 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8007 | int status; |
8008 | ||
8009 | if (use_integrity) { | |
8010 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8011 | cred = nfs4_get_clid_cred(server->nfs_client); |
8012 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8013 | } |
8014 | ||
8015 | dprintk("--> %s\n", __func__); | |
8016 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8017 | &res.seq_res, 0); | |
8018 | dprintk("<-- %s status=%d\n", __func__, status); | |
8019 | ||
7cb852df WAA |
8020 | if (cred) |
8021 | put_rpccred(cred); | |
b1b3e136 WAA |
8022 | |
8023 | return status; | |
fca78d6d BS |
8024 | } |
8025 | ||
8026 | static int | |
8027 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8028 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8029 | { | |
8030 | struct nfs4_exception exception = { }; | |
8031 | int err; | |
8032 | do { | |
b1b3e136 WAA |
8033 | /* first try using integrity protection */ |
8034 | err = -NFS4ERR_WRONGSEC; | |
8035 | ||
8036 | /* try to use integrity protection with machine cred */ | |
8037 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8038 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8039 | flavors, true); | |
8040 | ||
8041 | /* | |
8042 | * if unable to use integrity protection, or SECINFO with | |
8043 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8044 | * disallowed by spec, but exists in deployed servers) use | |
8045 | * the current filesystem's rpc_client and the user cred. | |
8046 | */ | |
8047 | if (err == -NFS4ERR_WRONGSEC) | |
8048 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8049 | flavors, false); | |
8050 | ||
fca78d6d BS |
8051 | switch (err) { |
8052 | case 0: | |
8053 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8054 | case -ENOTSUPP: |
05e9cfb4 | 8055 | goto out; |
fca78d6d BS |
8056 | default: |
8057 | err = nfs4_handle_exception(server, err, &exception); | |
8058 | } | |
8059 | } while (exception.retry); | |
05e9cfb4 | 8060 | out: |
fca78d6d BS |
8061 | return err; |
8062 | } | |
8063 | ||
8064 | static int | |
8065 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8066 | struct nfs_fsinfo *info) | |
8067 | { | |
8068 | int err; | |
8069 | struct page *page; | |
367156d9 | 8070 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8071 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8072 | struct nfs4_secinfo4 *secinfo; |
8073 | int i; | |
fca78d6d BS |
8074 | |
8075 | page = alloc_page(GFP_KERNEL); | |
8076 | if (!page) { | |
8077 | err = -ENOMEM; | |
8078 | goto out; | |
8079 | } | |
8080 | ||
8081 | flavors = page_address(page); | |
8082 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8083 | ||
8084 | /* | |
8085 | * Fall back on "guess and check" method if | |
8086 | * the server doesn't support SECINFO_NO_NAME | |
8087 | */ | |
78b19bae | 8088 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8089 | err = nfs4_find_root_sec(server, fhandle, info); |
8090 | goto out_freepage; | |
8091 | } | |
8092 | if (err) | |
8093 | goto out_freepage; | |
8094 | ||
58a8cf12 WAA |
8095 | for (i = 0; i < flavors->num_flavors; i++) { |
8096 | secinfo = &flavors->flavors[i]; | |
8097 | ||
8098 | switch (secinfo->flavor) { | |
8099 | case RPC_AUTH_NULL: | |
8100 | case RPC_AUTH_UNIX: | |
8101 | case RPC_AUTH_GSS: | |
8102 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8103 | &secinfo->flavor_info); | |
8104 | break; | |
8105 | default: | |
8106 | flavor = RPC_AUTH_MAXFLAVOR; | |
8107 | break; | |
8108 | } | |
8109 | ||
4d4b69dd WAA |
8110 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8111 | flavor = RPC_AUTH_MAXFLAVOR; | |
8112 | ||
58a8cf12 WAA |
8113 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8114 | err = nfs4_lookup_root_sec(server, fhandle, | |
8115 | info, flavor); | |
8116 | if (!err) | |
8117 | break; | |
8118 | } | |
8119 | } | |
8120 | ||
8121 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8122 | err = -EPERM; | |
fca78d6d BS |
8123 | |
8124 | out_freepage: | |
8125 | put_page(page); | |
8126 | if (err == -EACCES) | |
8127 | return -EPERM; | |
8128 | out: | |
8129 | return err; | |
8130 | } | |
1cab0652 | 8131 | |
ab7cb0df TM |
8132 | static int _nfs41_test_stateid(struct nfs_server *server, |
8133 | nfs4_stateid *stateid, | |
8134 | struct rpc_cred *cred) | |
7d974794 BS |
8135 | { |
8136 | int status; | |
8137 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8138 | .stateid = stateid, |
7d974794 BS |
8139 | }; |
8140 | struct nfs41_test_stateid_res res; | |
8141 | struct rpc_message msg = { | |
8142 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8143 | .rpc_argp = &args, | |
8144 | .rpc_resp = &res, | |
ab7cb0df | 8145 | .rpc_cred = cred, |
7d974794 | 8146 | }; |
3787d506 WAA |
8147 | struct rpc_clnt *rpc_client = server->client; |
8148 | ||
8149 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8150 | &rpc_client, &msg); | |
1cab0652 | 8151 | |
38527b15 | 8152 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8153 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8154 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8155 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8156 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8157 | if (status != NFS_OK) { |
8158 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8159 | return status; |
38527b15 CL |
8160 | } |
8161 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8162 | return -res.status; |
7d974794 BS |
8163 | } |
8164 | ||
38527b15 CL |
8165 | /** |
8166 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8167 | * | |
8168 | * @server: server / transport on which to perform the operation | |
8169 | * @stateid: state ID to test | |
ab7cb0df | 8170 | * @cred: credential |
38527b15 CL |
8171 | * |
8172 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8173 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8174 | * failed or the state ID is not currently valid. | |
8175 | */ | |
ab7cb0df TM |
8176 | static int nfs41_test_stateid(struct nfs_server *server, |
8177 | nfs4_stateid *stateid, | |
8178 | struct rpc_cred *cred) | |
7d974794 BS |
8179 | { |
8180 | struct nfs4_exception exception = { }; | |
8181 | int err; | |
8182 | do { | |
ab7cb0df | 8183 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8184 | if (err != -NFS4ERR_DELAY) |
8185 | break; | |
8186 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8187 | } while (exception.retry); |
8188 | return err; | |
8189 | } | |
9aeda35f | 8190 | |
7c1d5fae TM |
8191 | struct nfs_free_stateid_data { |
8192 | struct nfs_server *server; | |
8193 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8194 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8195 | }; |
8196 | ||
8197 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8198 | { | |
8199 | struct nfs_free_stateid_data *data = calldata; | |
8200 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8201 | &data->args.seq_args, | |
8202 | &data->res.seq_res, | |
8203 | task); | |
8204 | } | |
8205 | ||
8206 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8207 | { | |
8208 | struct nfs_free_stateid_data *data = calldata; | |
8209 | ||
8210 | nfs41_sequence_done(task, &data->res.seq_res); | |
8211 | ||
8212 | switch (task->tk_status) { | |
8213 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8214 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8215 | rpc_restart_call_prepare(task); |
8216 | } | |
8217 | } | |
8218 | ||
8219 | static void nfs41_free_stateid_release(void *calldata) | |
8220 | { | |
8221 | kfree(calldata); | |
8222 | } | |
8223 | ||
17f26b12 | 8224 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8225 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8226 | .rpc_call_done = nfs41_free_stateid_done, | |
8227 | .rpc_release = nfs41_free_stateid_release, | |
8228 | }; | |
8229 | ||
8230 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8231 | nfs4_stateid *stateid, | |
ab7cb0df | 8232 | struct rpc_cred *cred, |
7c1d5fae TM |
8233 | bool privileged) |
8234 | { | |
9aeda35f BS |
8235 | struct rpc_message msg = { |
8236 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8237 | .rpc_cred = cred, |
9aeda35f | 8238 | }; |
7c1d5fae TM |
8239 | struct rpc_task_setup task_setup = { |
8240 | .rpc_client = server->client, | |
8241 | .rpc_message = &msg, | |
8242 | .callback_ops = &nfs41_free_stateid_ops, | |
8243 | .flags = RPC_TASK_ASYNC, | |
8244 | }; | |
8245 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8246 | |
3787d506 WAA |
8247 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8248 | &task_setup.rpc_client, &msg); | |
8249 | ||
38527b15 | 8250 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8251 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8252 | if (!data) | |
8253 | return ERR_PTR(-ENOMEM); | |
8254 | data->server = server; | |
8255 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8256 | ||
8257 | task_setup.callback_data = data; | |
8258 | ||
8259 | msg.rpc_argp = &data->args; | |
8260 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8261 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8262 | if (privileged) |
8263 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8264 | ||
8265 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8266 | } |
8267 | ||
38527b15 CL |
8268 | /** |
8269 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8270 | * | |
8271 | * @server: server / transport on which to perform the operation | |
8272 | * @stateid: state ID to release | |
ab7cb0df | 8273 | * @cred: credential |
38527b15 CL |
8274 | * |
8275 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8276 | * negative NFS4ERR value is returned. | |
8277 | */ | |
ab7cb0df TM |
8278 | static int nfs41_free_stateid(struct nfs_server *server, |
8279 | nfs4_stateid *stateid, | |
8280 | struct rpc_cred *cred) | |
9aeda35f | 8281 | { |
7c1d5fae TM |
8282 | struct rpc_task *task; |
8283 | int ret; | |
8284 | ||
ab7cb0df | 8285 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8286 | if (IS_ERR(task)) |
8287 | return PTR_ERR(task); | |
8288 | ret = rpc_wait_for_completion_task(task); | |
8289 | if (!ret) | |
8290 | ret = task->tk_status; | |
8291 | rpc_put_task(task); | |
8292 | return ret; | |
9aeda35f | 8293 | } |
36281caa | 8294 | |
f1cdae87 JL |
8295 | static void |
8296 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8297 | { |
8298 | struct rpc_task *task; | |
ab7cb0df | 8299 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8300 | |
ab7cb0df | 8301 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8302 | nfs4_free_lock_state(server, lsp); |
8303 | if (IS_ERR(task)) | |
f1cdae87 | 8304 | return; |
c8b2d0bf | 8305 | rpc_put_task(task); |
c8b2d0bf TM |
8306 | } |
8307 | ||
36281caa TM |
8308 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8309 | const nfs4_stateid *s2) | |
8310 | { | |
2d2f24ad | 8311 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8312 | return false; |
8313 | ||
2d2f24ad | 8314 | if (s1->seqid == s2->seqid) |
36281caa | 8315 | return true; |
2d2f24ad | 8316 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8317 | return true; |
8318 | ||
8319 | return false; | |
8320 | } | |
8321 | ||
557134a3 AA |
8322 | #endif /* CONFIG_NFS_V4_1 */ |
8323 | ||
36281caa TM |
8324 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8325 | const nfs4_stateid *s2) | |
8326 | { | |
f597c537 | 8327 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8328 | } |
8329 | ||
8330 | ||
17280175 | 8331 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8332 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8333 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8334 | .recover_open = nfs4_open_reclaim, |
8335 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8336 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8337 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8338 | }; |
8339 | ||
591d71cb | 8340 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8341 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8342 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8343 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8344 | .recover_open = nfs4_open_reclaim, | |
8345 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8346 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8347 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8348 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8349 | }; |
8350 | #endif /* CONFIG_NFS_V4_1 */ | |
8351 | ||
17280175 | 8352 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8353 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8354 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8355 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8356 | .recover_lock = nfs4_lock_expired, |
8357 | .establish_clid = nfs4_init_clientid, | |
8358 | }; | |
8359 | ||
8360 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8361 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8362 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8363 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8364 | .recover_open = nfs41_open_expired, |
8365 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8366 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8367 | }; |
591d71cb | 8368 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8369 | |
17280175 | 8370 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8371 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8372 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8373 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8374 | }; |
8375 | ||
8376 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8377 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8378 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8379 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8380 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8381 | }; |
8382 | #endif | |
8383 | ||
ec011fe8 | 8384 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8385 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8386 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8387 | }; |
8388 | ||
8389 | #if defined(CONFIG_NFS_V4_1) | |
8390 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8391 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8392 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8393 | }; |
8394 | #endif /* CONFIG_NFS_V4_1 */ | |
8395 | ||
97dc1359 TM |
8396 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8397 | .minor_version = 0, | |
39c6daae TM |
8398 | .init_caps = NFS_CAP_READDIRPLUS |
8399 | | NFS_CAP_ATOMIC_OPEN | |
8400 | | NFS_CAP_CHANGE_ATTR | |
8401 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
8402 | .init_client = nfs40_init_client, |
8403 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8404 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8405 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8406 | .free_lock_state = nfs4_release_lockowner, |
9915ea7e | 8407 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8408 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8409 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8410 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8411 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8412 | }; |
8413 | ||
8414 | #if defined(CONFIG_NFS_V4_1) | |
8415 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
8416 | .minor_version = 1, | |
39c6daae TM |
8417 | .init_caps = NFS_CAP_READDIRPLUS |
8418 | | NFS_CAP_ATOMIC_OPEN | |
8419 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 8420 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8421 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8422 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8423 | .init_client = nfs41_init_client, |
8424 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8425 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8426 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8427 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8428 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8429 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8430 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8431 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8432 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8433 | }; |
8434 | #endif | |
8435 | ||
42c2c424 SD |
8436 | #if defined(CONFIG_NFS_V4_2) |
8437 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8438 | .minor_version = 2, | |
7017310a BS |
8439 | .init_caps = NFS_CAP_READDIRPLUS |
8440 | | NFS_CAP_ATOMIC_OPEN | |
8441 | | NFS_CAP_CHANGE_ATTR | |
8442 | | NFS_CAP_POSIX_LOCK | |
8443 | | NFS_CAP_STATEID_NFSV41 | |
e983120e AS |
8444 | | NFS_CAP_ATOMIC_OPEN_V1 |
8445 | | NFS_CAP_SEEK, | |
abf79bb3 CL |
8446 | .init_client = nfs41_init_client, |
8447 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8448 | .match_stateid = nfs41_match_stateid, |
8449 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8450 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8451 | .call_sync_ops = &nfs41_call_sync_ops, |
42c2c424 SD |
8452 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8453 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8454 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
8455 | }; | |
8456 | #endif | |
8457 | ||
97dc1359 TM |
8458 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8459 | [0] = &nfs_v4_0_minor_ops, | |
8460 | #if defined(CONFIG_NFS_V4_1) | |
8461 | [1] = &nfs_v4_1_minor_ops, | |
8462 | #endif | |
42c2c424 SD |
8463 | #if defined(CONFIG_NFS_V4_2) |
8464 | [2] = &nfs_v4_2_minor_ops, | |
8465 | #endif | |
97dc1359 TM |
8466 | }; |
8467 | ||
17f26b12 | 8468 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8469 | .create = nfs_create, |
8470 | .lookup = nfs_lookup, | |
8471 | .atomic_open = nfs_atomic_open, | |
8472 | .link = nfs_link, | |
8473 | .unlink = nfs_unlink, | |
8474 | .symlink = nfs_symlink, | |
8475 | .mkdir = nfs_mkdir, | |
8476 | .rmdir = nfs_rmdir, | |
8477 | .mknod = nfs_mknod, | |
8478 | .rename = nfs_rename, | |
8479 | .permission = nfs_permission, | |
8480 | .getattr = nfs_getattr, | |
8481 | .setattr = nfs_setattr, | |
8482 | .getxattr = generic_getxattr, | |
8483 | .setxattr = generic_setxattr, | |
8484 | .listxattr = generic_listxattr, | |
8485 | .removexattr = generic_removexattr, | |
8486 | }; | |
8487 | ||
92e1d5be | 8488 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8489 | .permission = nfs_permission, |
8490 | .getattr = nfs_getattr, | |
8491 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8492 | .getxattr = generic_getxattr, |
8493 | .setxattr = generic_setxattr, | |
8494 | .listxattr = generic_listxattr, | |
8495 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8496 | }; |
8497 | ||
509de811 | 8498 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8499 | .version = 4, /* protocol version */ |
8500 | .dentry_ops = &nfs4_dentry_operations, | |
8501 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8502 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8503 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8504 | .getroot = nfs4_proc_get_root, |
281cad46 | 8505 | .submount = nfs4_submount, |
ff9099f2 | 8506 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8507 | .getattr = nfs4_proc_getattr, |
8508 | .setattr = nfs4_proc_setattr, | |
8509 | .lookup = nfs4_proc_lookup, | |
8510 | .access = nfs4_proc_access, | |
8511 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8512 | .create = nfs4_proc_create, |
8513 | .remove = nfs4_proc_remove, | |
8514 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8515 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8516 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8517 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8518 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8519 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8520 | .link = nfs4_proc_link, |
8521 | .symlink = nfs4_proc_symlink, | |
8522 | .mkdir = nfs4_proc_mkdir, | |
8523 | .rmdir = nfs4_proc_remove, | |
8524 | .readdir = nfs4_proc_readdir, | |
8525 | .mknod = nfs4_proc_mknod, | |
8526 | .statfs = nfs4_proc_statfs, | |
8527 | .fsinfo = nfs4_proc_fsinfo, | |
8528 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8529 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8530 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8531 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8532 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8533 | .read_done = nfs4_read_done, |
1da177e4 | 8534 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8535 | .write_done = nfs4_write_done, |
1da177e4 | 8536 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8537 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8538 | .commit_done = nfs4_commit_done, |
1da177e4 | 8539 | .lock = nfs4_proc_lock, |
e50a1c2e | 8540 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8541 | .close_context = nfs4_close_context, |
2b484297 | 8542 | .open_context = nfs4_atomic_open, |
011e2a7f | 8543 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8544 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8545 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8546 | .init_client = nfs4_init_client, |
cdb7eced | 8547 | .free_client = nfs4_free_client, |
1179acc6 BS |
8548 | .create_server = nfs4_create_server, |
8549 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8550 | }; |
8551 | ||
64c2ce8b AK |
8552 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8553 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8554 | .list = nfs4_xattr_list_nfs4_acl, | |
8555 | .get = nfs4_xattr_get_nfs4_acl, | |
8556 | .set = nfs4_xattr_set_nfs4_acl, | |
8557 | }; | |
8558 | ||
8559 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8560 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8561 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8562 | &nfs4_xattr_nfs4_label_handler, | |
8563 | #endif | |
64c2ce8b AK |
8564 | NULL |
8565 | }; | |
8566 | ||
1da177e4 LT |
8567 | /* |
8568 | * Local variables: | |
8569 | * c-basic-offset: 8 | |
8570 | * End: | |
8571 | */ |