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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; | |
6e3cf241 TM |
161 | case -NFS4ERR_FILE_OPEN: |
162 | return -EBUSY; | |
52567b03 | 163 | default: |
1da177e4 | 164 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 165 | __func__, -err); |
52567b03 | 166 | break; |
1da177e4 | 167 | } |
52567b03 | 168 | return -EIO; |
1da177e4 LT |
169 | } |
170 | ||
171 | /* | |
172 | * This is our standard bitmap for GETATTR requests. | |
173 | */ | |
1549210f | 174 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
175 | FATTR4_WORD0_TYPE |
176 | | FATTR4_WORD0_CHANGE | |
177 | | FATTR4_WORD0_SIZE | |
178 | | FATTR4_WORD0_FSID | |
179 | | FATTR4_WORD0_FILEID, | |
180 | FATTR4_WORD1_MODE | |
181 | | FATTR4_WORD1_NUMLINKS | |
182 | | FATTR4_WORD1_OWNER | |
183 | | FATTR4_WORD1_OWNER_GROUP | |
184 | | FATTR4_WORD1_RAWDEV | |
185 | | FATTR4_WORD1_SPACE_USED | |
186 | | FATTR4_WORD1_TIME_ACCESS | |
187 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
188 | | FATTR4_WORD1_TIME_MODIFY, |
189 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
190 | FATTR4_WORD2_SECURITY_LABEL | |
191 | #endif | |
1da177e4 LT |
192 | }; |
193 | ||
1549210f TM |
194 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
195 | FATTR4_WORD0_TYPE | |
196 | | FATTR4_WORD0_CHANGE | |
197 | | FATTR4_WORD0_SIZE | |
198 | | FATTR4_WORD0_FSID | |
199 | | FATTR4_WORD0_FILEID, | |
200 | FATTR4_WORD1_MODE | |
201 | | FATTR4_WORD1_NUMLINKS | |
202 | | FATTR4_WORD1_OWNER | |
203 | | FATTR4_WORD1_OWNER_GROUP | |
204 | | FATTR4_WORD1_RAWDEV | |
205 | | FATTR4_WORD1_SPACE_USED | |
206 | | FATTR4_WORD1_TIME_ACCESS | |
207 | | FATTR4_WORD1_TIME_METADATA | |
208 | | FATTR4_WORD1_TIME_MODIFY, | |
209 | FATTR4_WORD2_MDSTHRESHOLD | |
210 | }; | |
211 | ||
e23008ec AA |
212 | static const u32 nfs4_open_noattr_bitmap[3] = { |
213 | FATTR4_WORD0_TYPE | |
214 | | FATTR4_WORD0_CHANGE | |
215 | | FATTR4_WORD0_FILEID, | |
216 | }; | |
217 | ||
a09df2ca | 218 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
219 | FATTR4_WORD0_FILES_AVAIL |
220 | | FATTR4_WORD0_FILES_FREE | |
221 | | FATTR4_WORD0_FILES_TOTAL, | |
222 | FATTR4_WORD1_SPACE_AVAIL | |
223 | | FATTR4_WORD1_SPACE_FREE | |
224 | | FATTR4_WORD1_SPACE_TOTAL | |
225 | }; | |
226 | ||
a09df2ca | 227 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
228 | FATTR4_WORD0_MAXLINK |
229 | | FATTR4_WORD0_MAXNAME, | |
230 | 0 | |
231 | }; | |
232 | ||
dae100c2 | 233 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
234 | | FATTR4_WORD0_MAXREAD |
235 | | FATTR4_WORD0_MAXWRITE | |
236 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 237 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
238 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
239 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
240 | }; |
241 | ||
a09df2ca | 242 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
243 | FATTR4_WORD0_TYPE |
244 | | FATTR4_WORD0_CHANGE | |
245 | | FATTR4_WORD0_SIZE | |
246 | | FATTR4_WORD0_FSID | |
247 | | FATTR4_WORD0_FILEID | |
248 | | FATTR4_WORD0_FS_LOCATIONS, | |
249 | FATTR4_WORD1_MODE | |
250 | | FATTR4_WORD1_NUMLINKS | |
251 | | FATTR4_WORD1_OWNER | |
252 | | FATTR4_WORD1_OWNER_GROUP | |
253 | | FATTR4_WORD1_RAWDEV | |
254 | | FATTR4_WORD1_SPACE_USED | |
255 | | FATTR4_WORD1_TIME_ACCESS | |
256 | | FATTR4_WORD1_TIME_METADATA | |
257 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 258 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
259 | }; |
260 | ||
bc4785cd | 261 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
262 | struct nfs4_readdir_arg *readdir) |
263 | { | |
0dbb4c67 | 264 | __be32 *start, *p; |
1da177e4 | 265 | |
1da177e4 | 266 | if (cookie > 2) { |
b7ef1956 | 267 | readdir->cookie = cookie; |
1da177e4 LT |
268 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
269 | return; | |
270 | } | |
271 | ||
272 | readdir->cookie = 0; | |
273 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
274 | if (cookie == 2) | |
275 | return; | |
276 | ||
277 | /* | |
278 | * NFSv4 servers do not return entries for '.' and '..' | |
279 | * Therefore, we fake these entries here. We let '.' | |
280 | * have cookie 0 and '..' have cookie 1. Note that | |
281 | * when talking to the server, we always send cookie 0 | |
282 | * instead of 1 or 2. | |
283 | */ | |
2b86ce2d | 284 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
285 | |
286 | if (cookie == 0) { | |
287 | *p++ = xdr_one; /* next */ | |
288 | *p++ = xdr_zero; /* cookie, first word */ | |
289 | *p++ = xdr_one; /* cookie, second word */ | |
290 | *p++ = xdr_one; /* entry len */ | |
291 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
292 | p++; | |
293 | *p++ = xdr_one; /* bitmap length */ | |
294 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
295 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 296 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
297 | } |
298 | ||
299 | *p++ = xdr_one; /* next */ | |
300 | *p++ = xdr_zero; /* cookie, first word */ | |
301 | *p++ = xdr_two; /* cookie, second word */ | |
302 | *p++ = xdr_two; /* entry len */ | |
303 | memcpy(p, "..\0\0", 4); /* entry */ | |
304 | p++; | |
305 | *p++ = xdr_one; /* bitmap length */ | |
306 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
307 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 308 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
309 | |
310 | readdir->pgbase = (char *)p - (char *)start; | |
311 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 312 | kunmap_atomic(start); |
1da177e4 LT |
313 | } |
314 | ||
8478eaa1 N |
315 | static long nfs4_update_delay(long *timeout) |
316 | { | |
317 | long ret; | |
318 | if (!timeout) | |
319 | return NFS4_POLL_RETRY_MAX; | |
320 | if (*timeout <= 0) | |
321 | *timeout = NFS4_POLL_RETRY_MIN; | |
322 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
323 | *timeout = NFS4_POLL_RETRY_MAX; | |
324 | ret = *timeout; | |
325 | *timeout <<= 1; | |
326 | return ret; | |
327 | } | |
328 | ||
65de872e TM |
329 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
330 | { | |
331 | int res = 0; | |
332 | ||
333 | might_sleep(); | |
334 | ||
8478eaa1 N |
335 | freezable_schedule_timeout_killable_unsafe( |
336 | nfs4_update_delay(timeout)); | |
65de872e TM |
337 | if (fatal_signal_pending(current)) |
338 | res = -ERESTARTSYS; | |
65de872e TM |
339 | return res; |
340 | } | |
341 | ||
342 | /* This is the error handling routine for processes that are allowed | |
343 | * to sleep. | |
344 | */ | |
f4ac1674 | 345 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
346 | { |
347 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 348 | struct nfs4_state *state = exception->state; |
3114ea7a | 349 | struct inode *inode = exception->inode; |
65de872e TM |
350 | int ret = errorcode; |
351 | ||
352 | exception->retry = 0; | |
353 | switch(errorcode) { | |
354 | case 0: | |
355 | return 0; | |
3114ea7a | 356 | case -NFS4ERR_OPENMODE: |
011e2a7f | 357 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 358 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
359 | exception->retry = 1; |
360 | return 0; | |
361 | } | |
362 | if (state == NULL) | |
363 | break; | |
5d422301 TM |
364 | ret = nfs4_schedule_stateid_recovery(server, state); |
365 | if (ret < 0) | |
366 | break; | |
3114ea7a | 367 | goto wait_on_recovery; |
a1d0b5ee | 368 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
369 | case -NFS4ERR_ADMIN_REVOKED: |
370 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
371 | if (state == NULL) |
372 | break; | |
5d422301 TM |
373 | ret = nfs4_schedule_stateid_recovery(server, state); |
374 | if (ret < 0) | |
375 | break; | |
0400a6b0 | 376 | goto wait_on_recovery; |
0ced63d1 | 377 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
378 | if (state != NULL) { |
379 | ret = nfs4_schedule_stateid_recovery(server, state); | |
380 | if (ret < 0) | |
381 | break; | |
382 | } | |
65de872e | 383 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 384 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
385 | nfs4_schedule_lease_recovery(clp); |
386 | goto wait_on_recovery; | |
519ae255 CL |
387 | case -NFS4ERR_MOVED: |
388 | ret = nfs4_schedule_migration_recovery(server); | |
389 | if (ret < 0) | |
390 | break; | |
391 | goto wait_on_recovery; | |
8ef2f8d4 CL |
392 | case -NFS4ERR_LEASE_MOVED: |
393 | nfs4_schedule_lease_moved_recovery(clp); | |
394 | goto wait_on_recovery; | |
03391693 | 395 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
396 | case -NFS4ERR_BADSESSION: |
397 | case -NFS4ERR_BADSLOT: | |
398 | case -NFS4ERR_BAD_HIGH_SLOT: | |
399 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
400 | case -NFS4ERR_DEADSESSION: | |
401 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
402 | case -NFS4ERR_SEQ_MISORDERED: | |
403 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
404 | errorcode); | |
9f594791 | 405 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 406 | goto wait_on_recovery; |
03391693 | 407 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 408 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
409 | if (exception->timeout > HZ) { |
410 | /* We have retried a decent amount, time to | |
411 | * fail | |
412 | */ | |
413 | ret = -EBUSY; | |
414 | break; | |
415 | } | |
65de872e TM |
416 | case -NFS4ERR_GRACE: |
417 | case -NFS4ERR_DELAY: | |
418 | ret = nfs4_delay(server->client, &exception->timeout); | |
419 | if (ret != 0) | |
420 | break; | |
a8a4ae3a | 421 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
422 | case -NFS4ERR_OLD_STATEID: |
423 | exception->retry = 1; | |
b064eca2 TM |
424 | break; |
425 | case -NFS4ERR_BADOWNER: | |
426 | /* The following works around a Linux server bug! */ | |
427 | case -NFS4ERR_BADNAME: | |
428 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
429 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
430 | exception->retry = 1; | |
431 | printk(KERN_WARNING "NFS: v4 server %s " | |
432 | "does not accept raw " | |
433 | "uid/gids. " | |
434 | "Reenabling the idmapper.\n", | |
435 | server->nfs_client->cl_hostname); | |
436 | } | |
65de872e TM |
437 | } |
438 | /* We failed to handle the error */ | |
439 | return nfs4_map_errors(ret); | |
0400a6b0 | 440 | wait_on_recovery: |
a2c0b9e2 | 441 | ret = nfs4_wait_clnt_recover(clp); |
519ae255 CL |
442 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
443 | return -EIO; | |
a2c0b9e2 TM |
444 | if (ret == 0) |
445 | exception->retry = 1; | |
446 | return ret; | |
65de872e TM |
447 | } |
448 | ||
a5250def WAA |
449 | /* |
450 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
451 | * or 'false' otherwise. | |
452 | */ | |
453 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
454 | { | |
455 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
456 | ||
457 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
458 | flavor == RPC_AUTH_GSS_KRB5P) | |
459 | return true; | |
460 | ||
461 | return false; | |
462 | } | |
65de872e | 463 | |
452e9352 | 464 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 465 | { |
1da177e4 LT |
466 | spin_lock(&clp->cl_lock); |
467 | if (time_before(clp->cl_last_renewal,timestamp)) | |
468 | clp->cl_last_renewal = timestamp; | |
469 | spin_unlock(&clp->cl_lock); | |
470 | } | |
471 | ||
452e9352 TM |
472 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
473 | { | |
474 | do_renew_lease(server->nfs_client, timestamp); | |
475 | } | |
476 | ||
2a3eb2b9 CL |
477 | struct nfs4_call_sync_data { |
478 | const struct nfs_server *seq_server; | |
479 | struct nfs4_sequence_args *seq_args; | |
480 | struct nfs4_sequence_res *seq_res; | |
481 | }; | |
482 | ||
a9c92d6b CL |
483 | static void nfs4_init_sequence(struct nfs4_sequence_args *args, |
484 | struct nfs4_sequence_res *res, int cache_reply) | |
485 | { | |
486 | args->sa_slot = NULL; | |
487 | args->sa_cache_this = cache_reply; | |
488 | args->sa_privileged = 0; | |
489 | ||
490 | res->sr_slot = NULL; | |
491 | } | |
492 | ||
493 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
494 | { | |
495 | args->sa_privileged = 1; | |
496 | } | |
497 | ||
3bd2384a CL |
498 | static int nfs40_setup_sequence(const struct nfs_server *server, |
499 | struct nfs4_sequence_args *args, | |
500 | struct nfs4_sequence_res *res, | |
501 | struct rpc_task *task) | |
502 | { | |
503 | struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl; | |
504 | struct nfs4_slot *slot; | |
505 | ||
506 | /* slot already allocated? */ | |
507 | if (res->sr_slot != NULL) | |
508 | goto out_start; | |
509 | ||
510 | spin_lock(&tbl->slot_tbl_lock); | |
511 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
512 | goto out_sleep; | |
513 | ||
514 | slot = nfs4_alloc_slot(tbl); | |
515 | if (IS_ERR(slot)) { | |
516 | if (slot == ERR_PTR(-ENOMEM)) | |
517 | task->tk_timeout = HZ >> 2; | |
518 | goto out_sleep; | |
519 | } | |
520 | spin_unlock(&tbl->slot_tbl_lock); | |
521 | ||
522 | args->sa_slot = slot; | |
523 | res->sr_slot = slot; | |
524 | ||
525 | out_start: | |
526 | rpc_call_start(task); | |
527 | return 0; | |
528 | ||
529 | out_sleep: | |
530 | if (args->sa_privileged) | |
531 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
532 | NULL, RPC_PRIORITY_PRIVILEGED); | |
533 | else | |
534 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
535 | spin_unlock(&tbl->slot_tbl_lock); | |
536 | return -EAGAIN; | |
537 | } | |
538 | ||
539 | static int nfs40_sequence_done(struct rpc_task *task, | |
540 | struct nfs4_sequence_res *res) | |
541 | { | |
542 | struct nfs4_slot *slot = res->sr_slot; | |
543 | struct nfs4_slot_table *tbl; | |
544 | ||
cab92c19 | 545 | if (slot == NULL) |
3bd2384a CL |
546 | goto out; |
547 | ||
548 | tbl = slot->table; | |
549 | spin_lock(&tbl->slot_tbl_lock); | |
550 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
551 | nfs4_free_slot(tbl, slot); | |
552 | spin_unlock(&tbl->slot_tbl_lock); | |
553 | ||
554 | res->sr_slot = NULL; | |
555 | out: | |
556 | return 1; | |
557 | } | |
558 | ||
cccef3b9 AA |
559 | #if defined(CONFIG_NFS_V4_1) |
560 | ||
d185a334 | 561 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 562 | { |
e3725ec0 | 563 | struct nfs4_session *session; |
13615871 | 564 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 565 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 566 | bool send_new_highest_used_slotid = false; |
13615871 | 567 | |
a13ce7c6 | 568 | tbl = slot->table; |
e3725ec0 | 569 | session = tbl->session; |
ea028ac9 | 570 | |
35dc1d74 | 571 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
572 | /* Be nice to the server: try to ensure that the last transmitted |
573 | * value for highest_user_slotid <= target_highest_slotid | |
574 | */ | |
575 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
576 | send_new_highest_used_slotid = true; | |
577 | ||
a13ce7c6 | 578 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
579 | send_new_highest_used_slotid = false; |
580 | goto out_unlock; | |
581 | } | |
a13ce7c6 | 582 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
583 | |
584 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
585 | send_new_highest_used_slotid = false; | |
b75ad4cd | 586 | out_unlock: |
35dc1d74 | 587 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 588 | res->sr_slot = NULL; |
c10e4498 TM |
589 | if (send_new_highest_used_slotid) |
590 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
591 | } |
592 | ||
f9c96fcc | 593 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 594 | { |
e3725ec0 | 595 | struct nfs4_session *session; |
a13ce7c6 | 596 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 597 | struct nfs_client *clp; |
ac20d163 | 598 | bool interrupted = false; |
85563073 | 599 | int ret = 1; |
b0df806c | 600 | |
a13ce7c6 TM |
601 | if (slot == NULL) |
602 | goto out_noaction; | |
468f8613 BS |
603 | /* don't increment the sequence number if the task wasn't sent */ |
604 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
605 | goto out; |
606 | ||
e3725ec0 | 607 | session = slot->table->session; |
933602e3 | 608 | |
ac20d163 TM |
609 | if (slot->interrupted) { |
610 | slot->interrupted = 0; | |
611 | interrupted = true; | |
612 | } | |
613 | ||
2f92ae34 | 614 | trace_nfs4_sequence_done(session, res); |
691daf3b | 615 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
616 | switch (res->sr_status) { |
617 | case 0: | |
b0df806c | 618 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 619 | ++slot->seq_nr; |
e3725ec0 | 620 | clp = session->clp; |
8e63b6a8 | 621 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 622 | /* Check sequence flags */ |
b4410c2f TM |
623 | if (res->sr_status_flags != 0) |
624 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 625 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 626 | break; |
ac20d163 TM |
627 | case 1: |
628 | /* | |
629 | * sr_status remains 1 if an RPC level error occurred. | |
630 | * The server may or may not have processed the sequence | |
631 | * operation.. | |
632 | * Mark the slot as having hosted an interrupted RPC call. | |
633 | */ | |
634 | slot->interrupted = 1; | |
635 | goto out; | |
14516c3a TM |
636 | case -NFS4ERR_DELAY: |
637 | /* The server detected a resend of the RPC call and | |
638 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
639 | * of RFC5661. | |
640 | */ | |
df2fabff | 641 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 642 | __func__, |
df2fabff | 643 | slot->slot_nr, |
933602e3 | 644 | slot->seq_nr); |
14516c3a | 645 | goto out_retry; |
85563073 TM |
646 | case -NFS4ERR_BADSLOT: |
647 | /* | |
648 | * The slot id we used was probably retired. Try again | |
649 | * using a different slot id. | |
650 | */ | |
e8794440 TM |
651 | goto retry_nowait; |
652 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
653 | /* |
654 | * Was the last operation on this sequence interrupted? | |
655 | * If so, retry after bumping the sequence number. | |
656 | */ | |
657 | if (interrupted) { | |
658 | ++slot->seq_nr; | |
659 | goto retry_nowait; | |
660 | } | |
e8794440 TM |
661 | /* |
662 | * Could this slot have been previously retired? | |
663 | * If so, then the server may be expecting seq_nr = 1! | |
664 | */ | |
8e63b6a8 TM |
665 | if (slot->seq_nr != 1) { |
666 | slot->seq_nr = 1; | |
667 | goto retry_nowait; | |
668 | } | |
669 | break; | |
e8794440 TM |
670 | case -NFS4ERR_SEQ_FALSE_RETRY: |
671 | ++slot->seq_nr; | |
672 | goto retry_nowait; | |
14516c3a TM |
673 | default: |
674 | /* Just update the slot sequence no. */ | |
933602e3 | 675 | ++slot->seq_nr; |
b0df806c AA |
676 | } |
677 | out: | |
678 | /* The session may be reset by one of the error handlers. */ | |
679 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 680 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 681 | out_noaction: |
85563073 | 682 | return ret; |
e8794440 TM |
683 | retry_nowait: |
684 | if (rpc_restart_call_prepare(task)) { | |
685 | task->tk_status = 0; | |
686 | ret = 0; | |
687 | } | |
688 | goto out; | |
14516c3a | 689 | out_retry: |
d05dd4e9 | 690 | if (!rpc_restart_call(task)) |
14516c3a TM |
691 | goto out; |
692 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
693 | return 0; | |
b0df806c | 694 | } |
f9c96fcc | 695 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 696 | |
14516c3a TM |
697 | static int nfs4_sequence_done(struct rpc_task *task, |
698 | struct nfs4_sequence_res *res) | |
df896455 | 699 | { |
e3725ec0 | 700 | if (res->sr_slot == NULL) |
14516c3a | 701 | return 1; |
3bd2384a CL |
702 | if (!res->sr_slot->table->session) |
703 | return nfs40_sequence_done(task, res); | |
14516c3a | 704 | return nfs41_sequence_done(task, res); |
df896455 TM |
705 | } |
706 | ||
dc70d7b3 | 707 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
708 | struct nfs4_sequence_args *args, |
709 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
710 | struct rpc_task *task) |
711 | { | |
fbcd4abc AA |
712 | struct nfs4_slot *slot; |
713 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
714 | |
715 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 716 | /* slot already allocated? */ |
dfb4f309 | 717 | if (res->sr_slot != NULL) |
d9afbd1b | 718 | goto out_success; |
ce5039c1 | 719 | |
fbcd4abc AA |
720 | tbl = &session->fc_slot_table; |
721 | ||
69d206b5 TM |
722 | task->tk_timeout = 0; |
723 | ||
fbcd4abc | 724 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 725 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 726 | !args->sa_privileged) { |
0b1c8fc4 | 727 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 728 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 729 | goto out_sleep; |
689cf5c1 AB |
730 | } |
731 | ||
2dc03b7f | 732 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
733 | if (IS_ERR(slot)) { |
734 | /* If out of memory, try again in 1/4 second */ | |
735 | if (slot == ERR_PTR(-ENOMEM)) | |
736 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 737 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 738 | goto out_sleep; |
fbcd4abc AA |
739 | } |
740 | spin_unlock(&tbl->slot_tbl_lock); | |
741 | ||
2b2fa717 | 742 | args->sa_slot = slot; |
fbcd4abc | 743 | |
e8d92382 | 744 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 745 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 746 | |
dfb4f309 | 747 | res->sr_slot = slot; |
8e63b6a8 | 748 | res->sr_timestamp = jiffies; |
2a6e26cd | 749 | res->sr_status_flags = 0; |
fbcd4abc AA |
750 | /* |
751 | * sr_status is only set in decode_sequence, and so will remain | |
752 | * set to 1 if an rpc level failure occurs. | |
753 | */ | |
754 | res->sr_status = 1; | |
2f92ae34 | 755 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
756 | out_success: |
757 | rpc_call_start(task); | |
ce5039c1 | 758 | return 0; |
7b939a3f | 759 | out_sleep: |
8fe72bac TM |
760 | /* Privileged tasks are queued with top priority */ |
761 | if (args->sa_privileged) | |
1e1093c7 TM |
762 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
763 | NULL, RPC_PRIORITY_PRIVILEGED); | |
764 | else | |
765 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
766 | spin_unlock(&tbl->slot_tbl_lock); |
767 | return -EAGAIN; | |
ce5039c1 | 768 | } |
dc70d7b3 | 769 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 770 | |
5a580e0a CL |
771 | static int nfs4_setup_sequence(const struct nfs_server *server, |
772 | struct nfs4_sequence_args *args, | |
773 | struct nfs4_sequence_res *res, | |
774 | struct rpc_task *task) | |
ce5039c1 | 775 | { |
035168ab | 776 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
777 | int ret = 0; |
778 | ||
3bd2384a CL |
779 | if (!session) |
780 | return nfs40_setup_sequence(server, args, res, task); | |
035168ab | 781 | |
e8d92382 | 782 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 783 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 784 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 785 | |
9d12b216 | 786 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 787 | |
ce5039c1 AA |
788 | dprintk("<-- %s status=%d\n", __func__, ret); |
789 | return ret; | |
790 | } | |
791 | ||
ce5039c1 AA |
792 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
793 | { | |
2a3eb2b9 | 794 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 795 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 796 | |
035168ab TM |
797 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
798 | ||
d9afbd1b | 799 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
800 | } |
801 | ||
69ab40c4 AA |
802 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
803 | { | |
2a3eb2b9 | 804 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 805 | |
14516c3a | 806 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
807 | } |
808 | ||
17280175 | 809 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 810 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 811 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
812 | }; |
813 | ||
3bd2384a CL |
814 | #else /* !CONFIG_NFS_V4_1 */ |
815 | ||
9915ea7e CL |
816 | static int nfs4_setup_sequence(const struct nfs_server *server, |
817 | struct nfs4_sequence_args *args, | |
818 | struct nfs4_sequence_res *res, | |
819 | struct rpc_task *task) | |
820 | { | |
3bd2384a | 821 | return nfs40_setup_sequence(server, args, res, task); |
9915ea7e CL |
822 | } |
823 | ||
824 | static int nfs4_sequence_done(struct rpc_task *task, | |
825 | struct nfs4_sequence_res *res) | |
826 | { | |
3bd2384a | 827 | return nfs40_sequence_done(task, res); |
9915ea7e | 828 | } |
3bd2384a CL |
829 | |
830 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
831 | |
832 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
833 | { | |
834 | struct nfs4_call_sync_data *data = calldata; | |
835 | nfs4_setup_sequence(data->seq_server, | |
836 | data->seq_args, data->seq_res, task); | |
837 | } | |
838 | ||
839 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
840 | { | |
841 | struct nfs4_call_sync_data *data = calldata; | |
842 | nfs4_sequence_done(task, data->seq_res); | |
843 | } | |
844 | ||
845 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
846 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
847 | .rpc_call_done = nfs40_call_sync_done, | |
848 | }; | |
849 | ||
7c513058 BS |
850 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
851 | struct nfs_server *server, | |
ce5039c1 AA |
852 | struct rpc_message *msg, |
853 | struct nfs4_sequence_args *args, | |
8fe72bac | 854 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
855 | { |
856 | int ret; | |
857 | struct rpc_task *task; | |
9915ea7e | 858 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 859 | struct nfs4_call_sync_data data = { |
035168ab | 860 | .seq_server = server, |
ce5039c1 AA |
861 | .seq_args = args, |
862 | .seq_res = res, | |
ce5039c1 AA |
863 | }; |
864 | struct rpc_task_setup task_setup = { | |
7c513058 | 865 | .rpc_client = clnt, |
ce5039c1 | 866 | .rpc_message = msg, |
9915ea7e | 867 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
868 | .callback_data = &data |
869 | }; | |
870 | ||
ce5039c1 AA |
871 | task = rpc_run_task(&task_setup); |
872 | if (IS_ERR(task)) | |
873 | ret = PTR_ERR(task); | |
874 | else { | |
875 | ret = task->tk_status; | |
876 | rpc_put_task(task); | |
877 | } | |
878 | return ret; | |
879 | } | |
880 | ||
7c513058 BS |
881 | int nfs4_call_sync(struct rpc_clnt *clnt, |
882 | struct nfs_server *server, | |
e73b83f2 BS |
883 | struct rpc_message *msg, |
884 | struct nfs4_sequence_args *args, | |
885 | struct nfs4_sequence_res *res, | |
886 | int cache_reply) | |
887 | { | |
a9c92d6b | 888 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 889 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 890 | } |
cccef3b9 | 891 | |
38478b24 | 892 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 893 | { |
38478b24 | 894 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 895 | |
38478b24 | 896 | spin_lock(&dir->i_lock); |
359d7d1c | 897 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 898 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 899 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 900 | dir->i_version = cinfo->after; |
de242c0b | 901 | nfs_fscache_invalidate(dir); |
38478b24 | 902 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
903 | } |
904 | ||
e56e0b78 | 905 | struct nfs4_opendata { |
c6d00e63 | 906 | struct kref kref; |
e56e0b78 TM |
907 | struct nfs_openargs o_arg; |
908 | struct nfs_openres o_res; | |
cdd4e68b TM |
909 | struct nfs_open_confirmargs c_arg; |
910 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
911 | struct nfs4_string owner_name; |
912 | struct nfs4_string group_name; | |
e56e0b78 | 913 | struct nfs_fattr f_attr; |
1775fd3e | 914 | struct nfs4_label *f_label; |
e56e0b78 | 915 | struct dentry *dir; |
82a2c1b7 | 916 | struct dentry *dentry; |
e56e0b78 | 917 | struct nfs4_state_owner *owner; |
aac00a8d | 918 | struct nfs4_state *state; |
e56e0b78 | 919 | struct iattr attrs; |
26e976a8 | 920 | unsigned long timestamp; |
3e309914 | 921 | unsigned int rpc_done : 1; |
5bc2afc2 | 922 | unsigned int file_created : 1; |
bdeca1b7 | 923 | unsigned int is_recover : 1; |
24ac23ab TM |
924 | int rpc_status; |
925 | int cancelled; | |
e56e0b78 TM |
926 | }; |
927 | ||
49f9a0fa TM |
928 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
929 | int err, struct nfs4_exception *exception) | |
930 | { | |
931 | if (err != -EINVAL) | |
932 | return false; | |
933 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
934 | return false; | |
935 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
936 | exception->retry = 1; | |
937 | return true; | |
938 | } | |
939 | ||
940 | static enum open_claim_type4 | |
941 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
942 | enum open_claim_type4 claim) | |
943 | { | |
944 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
945 | return claim; | |
946 | switch (claim) { | |
947 | default: | |
948 | return claim; | |
949 | case NFS4_OPEN_CLAIM_FH: | |
950 | return NFS4_OPEN_CLAIM_NULL; | |
951 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
952 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
953 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
954 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
955 | } | |
956 | } | |
2ced46c2 TM |
957 | |
958 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
959 | { | |
960 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 961 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
962 | p->o_res.seqid = p->o_arg.seqid; |
963 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 964 | p->o_res.server = p->o_arg.server; |
5f657530 | 965 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 966 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 967 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
968 | } |
969 | ||
82a2c1b7 | 970 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 971 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 972 | const struct iattr *attrs, |
1775fd3e | 973 | struct nfs4_label *label, |
4a1c0893 | 974 | enum open_claim_type4 claim, |
8535b2be | 975 | gfp_t gfp_mask) |
e56e0b78 | 976 | { |
82a2c1b7 | 977 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
978 | struct inode *dir = parent->d_inode; |
979 | struct nfs_server *server = NFS_SERVER(dir); | |
63f5f796 | 980 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
981 | struct nfs4_opendata *p; |
982 | ||
8535b2be | 983 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
984 | if (p == NULL) |
985 | goto err; | |
14c43f76 DQ |
986 | |
987 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
988 | if (IS_ERR(p->f_label)) | |
989 | goto err_free_p; | |
990 | ||
63f5f796 TM |
991 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
992 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 993 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 994 | goto err_free_label; |
82a2c1b7 AV |
995 | nfs_sb_active(dentry->d_sb); |
996 | p->dentry = dget(dentry); | |
e56e0b78 TM |
997 | p->dir = parent; |
998 | p->owner = sp; | |
999 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1000 | p->o_arg.open_flags = flags; |
1001 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
1002 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1003 | * will return permission denied for all bits until close */ | |
1004 | if (!(flags & O_EXCL)) { | |
1005 | /* ask server to check for all possible rights as results | |
1006 | * are cached */ | |
1007 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1008 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1009 | } |
7539bbab | 1010 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1011 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1012 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1013 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1014 | p->o_arg.server = server; |
aa9c2669 | 1015 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1016 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 1017 | p->o_arg.label = label; |
49f9a0fa TM |
1018 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1019 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1020 | case NFS4_OPEN_CLAIM_NULL: |
1021 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1022 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1023 | p->o_arg.fh = NFS_FH(dir); | |
1024 | break; | |
1025 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1026 | case NFS4_OPEN_CLAIM_FH: | |
1027 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1028 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1029 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
1030 | } | |
536e43d1 | 1031 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1032 | __u32 verf[2]; |
d77d76ff | 1033 | |
e56e0b78 TM |
1034 | p->o_arg.u.attrs = &p->attrs; |
1035 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1036 | |
1037 | verf[0] = jiffies; | |
1038 | verf[1] = current->pid; | |
1039 | memcpy(p->o_arg.u.verifier.data, verf, | |
1040 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1041 | } |
cdd4e68b TM |
1042 | p->c_arg.fh = &p->o_res.fh; |
1043 | p->c_arg.stateid = &p->o_res.stateid; | |
1044 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1045 | nfs4_init_opendata_res(p); |
c6d00e63 | 1046 | kref_init(&p->kref); |
e56e0b78 | 1047 | return p; |
14c43f76 DQ |
1048 | |
1049 | err_free_label: | |
1050 | nfs4_label_free(p->f_label); | |
1051 | err_free_p: | |
e56e0b78 TM |
1052 | kfree(p); |
1053 | err: | |
1054 | dput(parent); | |
1055 | return NULL; | |
1056 | } | |
1057 | ||
c6d00e63 | 1058 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1059 | { |
c6d00e63 TM |
1060 | struct nfs4_opendata *p = container_of(kref, |
1061 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1062 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1063 | |
1064 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1065 | if (p->state != NULL) |
1066 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1067 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
1068 | |
1069 | nfs4_label_free(p->f_label); | |
1070 | ||
c6d00e63 | 1071 | dput(p->dir); |
82a2c1b7 AV |
1072 | dput(p->dentry); |
1073 | nfs_sb_deactive(sb); | |
6926afd1 | 1074 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1075 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1076 | kfree(p); |
1077 | } | |
1078 | ||
1079 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1080 | { | |
1081 | if (p != NULL) | |
1082 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1083 | } |
1084 | ||
06f814a3 TM |
1085 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1086 | { | |
06f814a3 TM |
1087 | int ret; |
1088 | ||
06f814a3 | 1089 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1090 | return ret; |
1091 | } | |
1092 | ||
dc0b027d | 1093 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1094 | { |
1095 | int ret = 0; | |
dc0b027d | 1096 | |
536e43d1 | 1097 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1098 | goto out; |
1099 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1100 | case FMODE_READ: |
88069f77 TM |
1101 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1102 | && state->n_rdonly != 0; | |
6ee41268 TM |
1103 | break; |
1104 | case FMODE_WRITE: | |
88069f77 TM |
1105 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1106 | && state->n_wronly != 0; | |
6ee41268 TM |
1107 | break; |
1108 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1109 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1110 | && state->n_rdwr != 0; | |
6ee41268 | 1111 | } |
dc0b027d | 1112 | out: |
6ee41268 TM |
1113 | return ret; |
1114 | } | |
1115 | ||
dc0b027d | 1116 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1117 | { |
652f89f6 TM |
1118 | if (delegation == NULL) |
1119 | return 0; | |
dc0b027d | 1120 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1121 | return 0; |
d25be546 TM |
1122 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1123 | return 0; | |
b7391f44 | 1124 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1125 | return 1; |
1126 | } | |
1127 | ||
dc0b027d | 1128 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1129 | { |
dc0b027d | 1130 | switch (fmode) { |
e7616923 TM |
1131 | case FMODE_WRITE: |
1132 | state->n_wronly++; | |
1133 | break; | |
1134 | case FMODE_READ: | |
1135 | state->n_rdonly++; | |
1136 | break; | |
1137 | case FMODE_READ|FMODE_WRITE: | |
1138 | state->n_rdwr++; | |
1139 | } | |
dc0b027d | 1140 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1141 | } |
1142 | ||
4f14c194 TM |
1143 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1144 | { | |
1145 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1146 | bool need_recover = false; | |
1147 | ||
1148 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1149 | need_recover = true; | |
1150 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1151 | need_recover = true; | |
1152 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1153 | need_recover = true; | |
1154 | if (need_recover) | |
1155 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1156 | } | |
1157 | ||
e999e80e TM |
1158 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1159 | nfs4_stateid *stateid) | |
1160 | { | |
1161 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1162 | return true; | |
4f14c194 TM |
1163 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1164 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1165 | return true; |
4f14c194 | 1166 | } |
e999e80e TM |
1167 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1168 | return true; | |
1169 | return false; | |
1170 | } | |
1171 | ||
f95549cf TM |
1172 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1173 | { | |
1174 | if (state->n_wronly) | |
1175 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1176 | if (state->n_rdonly) | |
1177 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1178 | if (state->n_rdwr) | |
1179 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1180 | } | |
1181 | ||
226056c5 TM |
1182 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
1183 | nfs4_stateid *stateid, fmode_t fmode) | |
003707c7 | 1184 | { |
226056c5 TM |
1185 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1186 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1187 | case FMODE_WRITE: | |
1188 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1189 | break; | |
1190 | case FMODE_READ: | |
1191 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1192 | break; | |
1193 | case 0: | |
1194 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1195 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1196 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1197 | } | |
1198 | if (stateid == NULL) | |
1199 | return; | |
f95549cf TM |
1200 | /* Handle races with OPEN */ |
1201 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid) || | |
1202 | !nfs4_stateid_is_newer(stateid, &state->open_stateid)) { | |
1203 | nfs_resync_open_stateid_locked(state); | |
226056c5 | 1204 | return; |
f95549cf | 1205 | } |
003707c7 | 1206 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1207 | nfs4_stateid_copy(&state->stateid, stateid); |
1208 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1209 | } |
1210 | ||
1211 | static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) | |
1212 | { | |
1213 | write_seqlock(&state->seqlock); | |
1214 | nfs_clear_open_stateid_locked(state, stateid, fmode); | |
1215 | write_sequnlock(&state->seqlock); | |
4f14c194 TM |
1216 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1217 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1218 | } |
1219 | ||
dc0b027d | 1220 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1221 | { |
dc0b027d | 1222 | switch (fmode) { |
003707c7 TM |
1223 | case FMODE_READ: |
1224 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1225 | break; | |
1226 | case FMODE_WRITE: | |
1227 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1228 | break; | |
1229 | case FMODE_READ|FMODE_WRITE: | |
1230 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1231 | } | |
e999e80e TM |
1232 | if (!nfs_need_update_open_stateid(state, stateid)) |
1233 | return; | |
1234 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1235 | nfs4_stateid_copy(&state->stateid, stateid); | |
1236 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1237 | } |
1238 | ||
dc0b027d | 1239 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1240 | { |
8bda4e4c TM |
1241 | /* |
1242 | * Protect the call to nfs4_state_set_mode_locked and | |
1243 | * serialise the stateid update | |
1244 | */ | |
1245 | write_seqlock(&state->seqlock); | |
003707c7 | 1246 | if (deleg_stateid != NULL) { |
f597c537 | 1247 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1248 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1249 | } | |
1250 | if (open_stateid != NULL) | |
dc0b027d | 1251 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1252 | write_sequnlock(&state->seqlock); |
1253 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1254 | update_open_stateflags(state, fmode); |
ec073428 | 1255 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1256 | } |
1257 | ||
dc0b027d | 1258 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1259 | { |
1260 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1261 | struct nfs_delegation *deleg_cur; | |
1262 | int ret = 0; | |
1263 | ||
dc0b027d | 1264 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1265 | |
1266 | rcu_read_lock(); | |
1267 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1268 | if (deleg_cur == NULL) | |
1269 | goto no_delegation; | |
1270 | ||
1271 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1272 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1273 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1274 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1275 | goto no_delegation_unlock; |
1276 | ||
1277 | if (delegation == NULL) | |
1278 | delegation = &deleg_cur->stateid; | |
f597c537 | 1279 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1280 | goto no_delegation_unlock; |
1281 | ||
b7391f44 | 1282 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1283 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1284 | ret = 1; |
1285 | no_delegation_unlock: | |
1286 | spin_unlock(&deleg_cur->lock); | |
1287 | no_delegation: | |
1288 | rcu_read_unlock(); | |
1289 | ||
1290 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1291 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1292 | ret = 1; |
1293 | } | |
4f14c194 TM |
1294 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1295 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1296 | |
1297 | return ret; | |
1298 | } | |
1299 | ||
39071e6f TM |
1300 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1301 | const nfs4_stateid *stateid) | |
1302 | { | |
1303 | struct nfs4_state *state = lsp->ls_state; | |
1304 | bool ret = false; | |
1305 | ||
1306 | spin_lock(&state->state_lock); | |
1307 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1308 | goto out_noupdate; | |
1309 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1310 | goto out_noupdate; | |
1311 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1312 | ret = true; | |
1313 | out_noupdate: | |
1314 | spin_unlock(&state->state_lock); | |
1315 | return ret; | |
1316 | } | |
34310430 | 1317 | |
dc0b027d | 1318 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1319 | { |
1320 | struct nfs_delegation *delegation; | |
1321 | ||
1322 | rcu_read_lock(); | |
1323 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1324 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1325 | rcu_read_unlock(); |
1326 | return; | |
1327 | } | |
1328 | rcu_read_unlock(); | |
57ec14c5 | 1329 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1330 | } |
1331 | ||
6ee41268 | 1332 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1333 | { |
1334 | struct nfs4_state *state = opendata->state; | |
1335 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1336 | struct nfs_delegation *delegation; | |
f448badd | 1337 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1338 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1339 | nfs4_stateid stateid; |
1340 | int ret = -EAGAIN; | |
1341 | ||
aac00a8d | 1342 | for (;;) { |
61beef75 | 1343 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1344 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1345 | update_open_stateflags(state, fmode); |
6ee41268 | 1346 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1347 | goto out_return_state; |
6ee41268 | 1348 | } |
61beef75 | 1349 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1350 | rcu_read_lock(); |
1351 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1352 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1353 | rcu_read_unlock(); |
aac00a8d | 1354 | break; |
34310430 | 1355 | } |
aac00a8d | 1356 | /* Save the delegation */ |
f597c537 | 1357 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1358 | rcu_read_unlock(); |
fa332941 | 1359 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1360 | if (!opendata->is_recover) { |
1361 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1362 | if (ret != 0) | |
1363 | goto out; | |
1364 | } | |
aac00a8d | 1365 | ret = -EAGAIN; |
34310430 TM |
1366 | |
1367 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1368 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1369 | goto out_return_state; |
aac00a8d | 1370 | } |
aac00a8d TM |
1371 | out: |
1372 | return ERR_PTR(ret); | |
1373 | out_return_state: | |
1374 | atomic_inc(&state->count); | |
1375 | return state; | |
1376 | } | |
1377 | ||
e23008ec AA |
1378 | static void |
1379 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1380 | { | |
1381 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1382 | struct nfs_delegation *delegation; | |
1383 | int delegation_flags = 0; | |
1384 | ||
1385 | rcu_read_lock(); | |
1386 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1387 | if (delegation) | |
1388 | delegation_flags = delegation->flags; | |
1389 | rcu_read_unlock(); | |
1390 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1391 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1392 | "returning a delegation for " | |
1393 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1394 | clp->cl_hostname); | |
1395 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1396 | nfs_inode_set_delegation(state->inode, | |
1397 | data->owner->so_cred, | |
1398 | &data->o_res); | |
1399 | else | |
1400 | nfs_inode_reclaim_delegation(state->inode, | |
1401 | data->owner->so_cred, | |
1402 | &data->o_res); | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1407 | * and update the nfs4_state. | |
1408 | */ | |
1409 | static struct nfs4_state * | |
1410 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1411 | { | |
1412 | struct inode *inode = data->state->inode; | |
1413 | struct nfs4_state *state = data->state; | |
1414 | int ret; | |
1415 | ||
d2bfda2e WAA |
1416 | if (!data->rpc_done) { |
1417 | if (data->rpc_status) { | |
1418 | ret = data->rpc_status; | |
1419 | goto err; | |
1420 | } | |
1421 | /* cached opens have already been processed */ | |
1422 | goto update; | |
e23008ec AA |
1423 | } |
1424 | ||
e23008ec AA |
1425 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1426 | if (ret) | |
1427 | goto err; | |
1428 | ||
1429 | if (data->o_res.delegation_type != 0) | |
1430 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1431 | update: |
e23008ec AA |
1432 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1433 | data->o_arg.fmode); | |
d49f042a | 1434 | atomic_inc(&state->count); |
e23008ec AA |
1435 | |
1436 | return state; | |
1437 | err: | |
1438 | return ERR_PTR(ret); | |
1439 | ||
1440 | } | |
1441 | ||
1442 | static struct nfs4_state * | |
1443 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1444 | { |
1445 | struct inode *inode; | |
1446 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1447 | int ret; |
24ac23ab | 1448 | |
aac00a8d | 1449 | if (!data->rpc_done) { |
6ee41268 | 1450 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1451 | goto out; |
1452 | } | |
1453 | ||
1b370bc2 | 1454 | ret = -EAGAIN; |
24ac23ab | 1455 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1456 | goto err; |
1775fd3e | 1457 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1458 | ret = PTR_ERR(inode); |
03f28e3a | 1459 | if (IS_ERR(inode)) |
1b370bc2 TM |
1460 | goto err; |
1461 | ret = -ENOMEM; | |
24ac23ab TM |
1462 | state = nfs4_get_open_state(inode, data->owner); |
1463 | if (state == NULL) | |
1b370bc2 | 1464 | goto err_put_inode; |
e23008ec AA |
1465 | if (data->o_res.delegation_type != 0) |
1466 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1467 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1468 | data->o_arg.fmode); |
24ac23ab | 1469 | iput(inode); |
aac00a8d | 1470 | out: |
7aa262b5 | 1471 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1472 | return state; |
1b370bc2 TM |
1473 | err_put_inode: |
1474 | iput(inode); | |
1475 | err: | |
1476 | return ERR_PTR(ret); | |
24ac23ab TM |
1477 | } |
1478 | ||
e23008ec AA |
1479 | static struct nfs4_state * |
1480 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1481 | { | |
1482 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1483 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1484 | return _nfs4_opendata_to_nfs4_state(data); | |
1485 | } | |
1486 | ||
864472e9 TM |
1487 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1488 | { | |
1489 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1490 | struct nfs_open_context *ctx; | |
1491 | ||
1492 | spin_lock(&state->inode->i_lock); | |
1493 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1494 | if (ctx->state != state) | |
1495 | continue; | |
1496 | get_nfs_open_context(ctx); | |
1497 | spin_unlock(&state->inode->i_lock); | |
1498 | return ctx; | |
1499 | } | |
1500 | spin_unlock(&state->inode->i_lock); | |
1501 | return ERR_PTR(-ENOENT); | |
1502 | } | |
1503 | ||
4a1c0893 TM |
1504 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1505 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1506 | { |
1507 | struct nfs4_opendata *opendata; | |
1508 | ||
4a1c0893 | 1509 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1510 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1511 | if (opendata == NULL) |
1512 | return ERR_PTR(-ENOMEM); | |
1513 | opendata->state = state; | |
1514 | atomic_inc(&state->count); | |
1515 | return opendata; | |
1516 | } | |
1517 | ||
dc0b027d | 1518 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1519 | { |
2ced46c2 | 1520 | struct nfs4_state *newstate; |
864472e9 TM |
1521 | int ret; |
1522 | ||
dc0b027d TM |
1523 | opendata->o_arg.open_flags = 0; |
1524 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1525 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1526 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1527 | nfs4_init_opendata_res(opendata); | |
b257957e | 1528 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1529 | if (ret != 0) |
1530 | return ret; | |
2ced46c2 | 1531 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1532 | if (IS_ERR(newstate)) |
1533 | return PTR_ERR(newstate); | |
643168c2 | 1534 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1535 | *res = newstate; |
864472e9 TM |
1536 | return 0; |
1537 | } | |
1538 | ||
1539 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1540 | { | |
864472e9 | 1541 | struct nfs4_state *newstate; |
864472e9 TM |
1542 | int ret; |
1543 | ||
4f14c194 TM |
1544 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1545 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1546 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1547 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1548 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1549 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1550 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1551 | smp_rmb(); |
1552 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1553 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1554 | if (ret != 0) |
1555 | return ret; | |
2ced46c2 TM |
1556 | if (newstate != state) |
1557 | return -ESTALE; | |
864472e9 TM |
1558 | } |
1559 | if (state->n_wronly != 0) { | |
2ced46c2 | 1560 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1561 | if (ret != 0) |
1562 | return ret; | |
2ced46c2 TM |
1563 | if (newstate != state) |
1564 | return -ESTALE; | |
864472e9 TM |
1565 | } |
1566 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1567 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1568 | if (ret != 0) |
1569 | return ret; | |
2ced46c2 TM |
1570 | if (newstate != state) |
1571 | return -ESTALE; | |
864472e9 | 1572 | } |
1ac7e2fd TM |
1573 | /* |
1574 | * We may have performed cached opens for all three recoveries. | |
1575 | * Check if we need to update the current stateid. | |
1576 | */ | |
1577 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1578 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1579 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1580 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1581 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1582 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1583 | } |
864472e9 TM |
1584 | return 0; |
1585 | } | |
1586 | ||
1da177e4 LT |
1587 | /* |
1588 | * OPEN_RECLAIM: | |
1589 | * reclaim state on the server after a reboot. | |
1da177e4 | 1590 | */ |
539cd03a | 1591 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1592 | { |
1ac7e2fd | 1593 | struct nfs_delegation *delegation; |
864472e9 | 1594 | struct nfs4_opendata *opendata; |
dc0b027d | 1595 | fmode_t delegation_type = 0; |
1da177e4 LT |
1596 | int status; |
1597 | ||
4a1c0893 TM |
1598 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1599 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1600 | if (IS_ERR(opendata)) |
1601 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1602 | rcu_read_lock(); |
1603 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1604 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1605 | delegation_type = delegation->type; |
1ac7e2fd | 1606 | rcu_read_unlock(); |
864472e9 TM |
1607 | opendata->o_arg.u.delegation_type = delegation_type; |
1608 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1609 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1610 | return status; |
1611 | } | |
1612 | ||
539cd03a | 1613 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1614 | { |
1615 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1616 | struct nfs4_exception exception = { }; | |
1617 | int err; | |
1618 | do { | |
539cd03a | 1619 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1620 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1621 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1622 | continue; | |
168667c4 | 1623 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1624 | break; |
1625 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1626 | } while (exception.retry); |
1627 | return err; | |
1628 | } | |
1629 | ||
864472e9 TM |
1630 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1631 | { | |
1632 | struct nfs_open_context *ctx; | |
1633 | int ret; | |
1634 | ||
1635 | ctx = nfs4_state_find_open_context(state); | |
1636 | if (IS_ERR(ctx)) | |
91876b13 | 1637 | return -EAGAIN; |
539cd03a | 1638 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1639 | put_nfs_open_context(ctx); |
1640 | return ret; | |
1641 | } | |
1642 | ||
db4f2e63 | 1643 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1644 | { |
be76b5b6 TM |
1645 | switch (err) { |
1646 | default: | |
1647 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1648 | "%d.\n", __func__, err); | |
1649 | case 0: | |
1650 | case -ENOENT: | |
1651 | case -ESTALE: | |
1652 | break; | |
1653 | case -NFS4ERR_BADSESSION: | |
1654 | case -NFS4ERR_BADSLOT: | |
1655 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1656 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1657 | case -NFS4ERR_DEADSESSION: | |
1658 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1659 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1660 | return -EAGAIN; | |
1661 | case -NFS4ERR_STALE_CLIENTID: | |
1662 | case -NFS4ERR_STALE_STATEID: | |
1663 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1664 | case -NFS4ERR_EXPIRED: | |
1665 | /* Don't recall a delegation if it was lost */ | |
1666 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1667 | return -EAGAIN; | |
352297b9 CL |
1668 | case -NFS4ERR_MOVED: |
1669 | nfs4_schedule_migration_recovery(server); | |
1670 | return -EAGAIN; | |
8ef2f8d4 CL |
1671 | case -NFS4ERR_LEASE_MOVED: |
1672 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1673 | return -EAGAIN; | |
be76b5b6 TM |
1674 | case -NFS4ERR_DELEG_REVOKED: |
1675 | case -NFS4ERR_ADMIN_REVOKED: | |
1676 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1677 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1678 | nfs_inode_find_state_and_recover(state->inode, |
1679 | stateid); | |
1680 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1681 | return -EAGAIN; |
be76b5b6 TM |
1682 | case -NFS4ERR_DELAY: |
1683 | case -NFS4ERR_GRACE: | |
1684 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1685 | ssleep(1); | |
1686 | return -EAGAIN; | |
db4f2e63 TM |
1687 | case -ENOMEM: |
1688 | case -NFS4ERR_DENIED: | |
1689 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1690 | return 0; | |
be76b5b6 | 1691 | } |
1da177e4 LT |
1692 | return err; |
1693 | } | |
1694 | ||
db4f2e63 TM |
1695 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1696 | { | |
1697 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1698 | struct nfs4_opendata *opendata; | |
1699 | int err; | |
1700 | ||
1701 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1702 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1703 | if (IS_ERR(opendata)) | |
1704 | return PTR_ERR(opendata); | |
1705 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1706 | err = nfs4_open_recover(opendata, state); | |
1707 | nfs4_opendata_put(opendata); | |
1708 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1709 | } | |
1710 | ||
be05c860 CL |
1711 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1712 | { | |
1713 | struct nfs4_opendata *data = calldata; | |
1714 | ||
17ead6c8 TM |
1715 | nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args, |
1716 | &data->c_res.seq_res, task); | |
be05c860 CL |
1717 | } |
1718 | ||
cdd4e68b TM |
1719 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1720 | { | |
1721 | struct nfs4_opendata *data = calldata; | |
1722 | ||
17ead6c8 | 1723 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1724 | |
cdd4e68b | 1725 | data->rpc_status = task->tk_status; |
26e976a8 | 1726 | if (data->rpc_status == 0) { |
f597c537 | 1727 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1728 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1729 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1730 | data->rpc_done = 1; |
26e976a8 | 1731 | } |
cdd4e68b TM |
1732 | } |
1733 | ||
1734 | static void nfs4_open_confirm_release(void *calldata) | |
1735 | { | |
1736 | struct nfs4_opendata *data = calldata; | |
1737 | struct nfs4_state *state = NULL; | |
1738 | ||
1739 | /* If this request hasn't been cancelled, do nothing */ | |
1740 | if (data->cancelled == 0) | |
1741 | goto out_free; | |
1742 | /* In case of error, no cleanup! */ | |
3e309914 | 1743 | if (!data->rpc_done) |
cdd4e68b | 1744 | goto out_free; |
cdd4e68b | 1745 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1746 | if (!IS_ERR(state)) |
643168c2 | 1747 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1748 | out_free: |
c6d00e63 | 1749 | nfs4_opendata_put(data); |
cdd4e68b TM |
1750 | } |
1751 | ||
1752 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1753 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1754 | .rpc_call_done = nfs4_open_confirm_done, |
1755 | .rpc_release = nfs4_open_confirm_release, | |
1756 | }; | |
1757 | ||
1758 | /* | |
1759 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1760 | */ | |
1761 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1762 | { | |
1763 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1764 | struct rpc_task *task; | |
5138fde0 TM |
1765 | struct rpc_message msg = { |
1766 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1767 | .rpc_argp = &data->c_arg, | |
1768 | .rpc_resp = &data->c_res, | |
1769 | .rpc_cred = data->owner->so_cred, | |
1770 | }; | |
c970aa85 TM |
1771 | struct rpc_task_setup task_setup_data = { |
1772 | .rpc_client = server->client, | |
5138fde0 | 1773 | .rpc_message = &msg, |
c970aa85 TM |
1774 | .callback_ops = &nfs4_open_confirm_ops, |
1775 | .callback_data = data, | |
101070ca | 1776 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1777 | .flags = RPC_TASK_ASYNC, |
1778 | }; | |
1da177e4 LT |
1779 | int status; |
1780 | ||
17ead6c8 | 1781 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1782 | kref_get(&data->kref); |
3e309914 TM |
1783 | data->rpc_done = 0; |
1784 | data->rpc_status = 0; | |
5138fde0 | 1785 | data->timestamp = jiffies; |
c970aa85 | 1786 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1787 | if (IS_ERR(task)) |
cdd4e68b | 1788 | return PTR_ERR(task); |
cdd4e68b TM |
1789 | status = nfs4_wait_for_completion_rpc_task(task); |
1790 | if (status != 0) { | |
1791 | data->cancelled = 1; | |
1792 | smp_wmb(); | |
1793 | } else | |
1794 | status = data->rpc_status; | |
e6b3c4db | 1795 | rpc_put_task(task); |
1da177e4 LT |
1796 | return status; |
1797 | } | |
1798 | ||
24ac23ab | 1799 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1800 | { |
24ac23ab TM |
1801 | struct nfs4_opendata *data = calldata; |
1802 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1803 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1804 | |
24ac23ab | 1805 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1806 | goto out_wait; |
aac00a8d TM |
1807 | /* |
1808 | * Check if we still need to send an OPEN call, or if we can use | |
1809 | * a delegation instead. | |
1810 | */ | |
1811 | if (data->state != NULL) { | |
1812 | struct nfs_delegation *delegation; | |
1813 | ||
dc0b027d | 1814 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1815 | goto out_no_action; |
aac00a8d TM |
1816 | rcu_read_lock(); |
1817 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1818 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1819 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1820 | can_open_delegated(delegation, data->o_arg.fmode)) |
1821 | goto unlock_no_action; | |
aac00a8d TM |
1822 | rcu_read_unlock(); |
1823 | } | |
95b72eb0 | 1824 | /* Update client id. */ |
549b19cc | 1825 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1826 | switch (data->o_arg.claim) { |
1827 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1828 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1829 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1830 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1831 | case NFS4_OPEN_CLAIM_FH: |
1832 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1833 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1834 | } | |
26e976a8 | 1835 | data->timestamp = jiffies; |
035168ab | 1836 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1837 | &data->o_arg.seq_args, |
2240a9e2 TM |
1838 | &data->o_res.seq_res, |
1839 | task) != 0) | |
1840 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1841 | |
1842 | /* Set the create mode (note dependency on the session type) */ | |
1843 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1844 | if (data->o_arg.open_flags & O_EXCL) { | |
1845 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1846 | if (nfs4_has_persistent_session(clp)) | |
1847 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1848 | else if (clp->cl_mvops->minor_version > 0) | |
1849 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1850 | } | |
6ee41268 | 1851 | return; |
652f89f6 TM |
1852 | unlock_no_action: |
1853 | rcu_read_unlock(); | |
6ee41268 TM |
1854 | out_no_action: |
1855 | task->tk_action = NULL; | |
c8da19b9 | 1856 | out_wait: |
b75ad4cd | 1857 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1858 | } |
1859 | ||
24ac23ab TM |
1860 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1861 | { | |
1862 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1863 | |
24ac23ab | 1864 | data->rpc_status = task->tk_status; |
d898528c | 1865 | |
14516c3a TM |
1866 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1867 | return; | |
d898528c | 1868 | |
24ac23ab | 1869 | if (task->tk_status == 0) { |
807d66d8 TM |
1870 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1871 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1872 | case S_IFREG: |
1873 | break; | |
1874 | case S_IFLNK: | |
24ac23ab | 1875 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1876 | break; |
1877 | case S_IFDIR: | |
24ac23ab | 1878 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1879 | break; |
1880 | default: | |
24ac23ab | 1881 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1882 | } |
6f926b5b | 1883 | } |
26e976a8 | 1884 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1885 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1886 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1887 | } |
3e309914 | 1888 | data->rpc_done = 1; |
24ac23ab | 1889 | } |
6f926b5b | 1890 | |
24ac23ab TM |
1891 | static void nfs4_open_release(void *calldata) |
1892 | { | |
1893 | struct nfs4_opendata *data = calldata; | |
1894 | struct nfs4_state *state = NULL; | |
1895 | ||
1896 | /* If this request hasn't been cancelled, do nothing */ | |
1897 | if (data->cancelled == 0) | |
1898 | goto out_free; | |
1899 | /* In case of error, no cleanup! */ | |
3e309914 | 1900 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1901 | goto out_free; |
1902 | /* In case we need an open_confirm, no cleanup! */ | |
1903 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1904 | goto out_free; | |
24ac23ab | 1905 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1906 | if (!IS_ERR(state)) |
643168c2 | 1907 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1908 | out_free: |
c6d00e63 | 1909 | nfs4_opendata_put(data); |
24ac23ab TM |
1910 | } |
1911 | ||
1912 | static const struct rpc_call_ops nfs4_open_ops = { | |
1913 | .rpc_call_prepare = nfs4_open_prepare, | |
1914 | .rpc_call_done = nfs4_open_done, | |
1915 | .rpc_release = nfs4_open_release, | |
1916 | }; | |
1917 | ||
b257957e | 1918 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1919 | { |
1920 | struct inode *dir = data->dir->d_inode; | |
1921 | struct nfs_server *server = NFS_SERVER(dir); | |
1922 | struct nfs_openargs *o_arg = &data->o_arg; | |
1923 | struct nfs_openres *o_res = &data->o_res; | |
1924 | struct rpc_task *task; | |
5138fde0 TM |
1925 | struct rpc_message msg = { |
1926 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1927 | .rpc_argp = o_arg, | |
1928 | .rpc_resp = o_res, | |
1929 | .rpc_cred = data->owner->so_cred, | |
1930 | }; | |
c970aa85 TM |
1931 | struct rpc_task_setup task_setup_data = { |
1932 | .rpc_client = server->client, | |
5138fde0 | 1933 | .rpc_message = &msg, |
c970aa85 TM |
1934 | .callback_ops = &nfs4_open_ops, |
1935 | .callback_data = data, | |
101070ca | 1936 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1937 | .flags = RPC_TASK_ASYNC, |
1938 | }; | |
24ac23ab TM |
1939 | int status; |
1940 | ||
a9c92d6b | 1941 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1942 | kref_get(&data->kref); |
3e309914 TM |
1943 | data->rpc_done = 0; |
1944 | data->rpc_status = 0; | |
2ced46c2 | 1945 | data->cancelled = 0; |
bdeca1b7 TM |
1946 | data->is_recover = 0; |
1947 | if (isrecover) { | |
8fe72bac | 1948 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1949 | data->is_recover = 1; |
1950 | } | |
c970aa85 | 1951 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1952 | if (IS_ERR(task)) |
1953 | return PTR_ERR(task); | |
1954 | status = nfs4_wait_for_completion_rpc_task(task); | |
1955 | if (status != 0) { | |
1956 | data->cancelled = 1; | |
1957 | smp_wmb(); | |
1958 | } else | |
1959 | status = data->rpc_status; | |
1960 | rpc_put_task(task); | |
1961 | ||
1962 | return status; | |
1963 | } | |
1964 | ||
1965 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1966 | { | |
1967 | struct inode *dir = data->dir->d_inode; | |
1968 | struct nfs_openres *o_res = &data->o_res; | |
1969 | int status; | |
1970 | ||
1971 | status = nfs4_run_open_task(data, 1); | |
1972 | if (status != 0 || !data->rpc_done) | |
1973 | return status; | |
1974 | ||
6926afd1 TM |
1975 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1976 | ||
b257957e AB |
1977 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1978 | status = _nfs4_proc_open_confirm(data); | |
1979 | if (status != 0) | |
1980 | return status; | |
1981 | } | |
1982 | ||
1983 | return status; | |
1984 | } | |
1985 | ||
f3792d63 TM |
1986 | /* |
1987 | * Additional permission checks in order to distinguish between an | |
1988 | * open for read, and an open for execute. This works around the | |
1989 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
1990 | * the same. | |
1991 | * Note that in the non-execute case, we want to turn off permission | |
1992 | * checking if we just created a new file (POSIX open() semantics). | |
1993 | */ | |
6168f62c WAA |
1994 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1995 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1996 | struct nfs4_state *state, fmode_t fmode, |
1997 | int openflags) | |
6168f62c WAA |
1998 | { |
1999 | struct nfs_access_entry cache; | |
2000 | u32 mask; | |
2001 | ||
2002 | /* access call failed or for some reason the server doesn't | |
2003 | * support any access modes -- defer access call until later */ | |
2004 | if (opendata->o_res.access_supported == 0) | |
2005 | return 0; | |
2006 | ||
2007 | mask = 0; | |
f3792d63 TM |
2008 | /* |
2009 | * Use openflags to check for exec, because fmode won't | |
2010 | * always have FMODE_EXEC set when file open for exec. | |
2011 | */ | |
f8d9a897 WAA |
2012 | if (openflags & __FMODE_EXEC) { |
2013 | /* ONLY check for exec rights */ | |
2014 | mask = MAY_EXEC; | |
f3792d63 | 2015 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2016 | mask = MAY_READ; |
6168f62c WAA |
2017 | |
2018 | cache.cred = cred; | |
2019 | cache.jiffies = jiffies; | |
2020 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2021 | nfs_access_add_cache(state->inode, &cache); | |
2022 | ||
bbd3a8ee | 2023 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2024 | return 0; |
2025 | ||
2026 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2027 | nfs4_close_state(state, fmode); | |
998f40b5 | 2028 | return -EACCES; |
6168f62c WAA |
2029 | } |
2030 | ||
b257957e AB |
2031 | /* |
2032 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2033 | */ | |
2034 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2035 | { | |
2036 | struct inode *dir = data->dir->d_inode; | |
2037 | struct nfs_server *server = NFS_SERVER(dir); | |
2038 | struct nfs_openargs *o_arg = &data->o_arg; | |
2039 | struct nfs_openres *o_res = &data->o_res; | |
2040 | int status; | |
2041 | ||
2042 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2043 | if (!data->rpc_done) |
2044 | return status; | |
2045 | if (status != 0) { | |
2046 | if (status == -NFS4ERR_BADNAME && | |
2047 | !(o_arg->open_flags & O_CREAT)) | |
2048 | return -ENOENT; | |
24ac23ab | 2049 | return status; |
08ef7bd3 | 2050 | } |
24ac23ab | 2051 | |
6926afd1 TM |
2052 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2053 | ||
5bc2afc2 | 2054 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2055 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2056 | if (o_arg->open_flags & O_EXCL) |
2057 | data->file_created = 1; | |
2058 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2059 | data->file_created = 1; | |
2060 | } | |
0df5dd4a TM |
2061 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2062 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2063 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2064 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2065 | if (status != 0) |
24ac23ab | 2066 | return status; |
1da177e4 LT |
2067 | } |
2068 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2069 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2070 | return 0; |
1da177e4 LT |
2071 | } |
2072 | ||
d83217c1 AA |
2073 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2074 | { | |
2075 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2076 | } | |
2077 | ||
1da177e4 LT |
2078 | /* |
2079 | * OPEN_EXPIRED: | |
2080 | * reclaim state on the server after a network partition. | |
2081 | * Assumes caller holds the appropriate lock | |
2082 | */ | |
539cd03a | 2083 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2084 | { |
e56e0b78 | 2085 | struct nfs4_opendata *opendata; |
864472e9 | 2086 | int ret; |
1da177e4 | 2087 | |
4a1c0893 | 2088 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2089 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2090 | if (IS_ERR(opendata)) |
2091 | return PTR_ERR(opendata); | |
864472e9 | 2092 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2093 | if (ret == -ESTALE) |
3d4ff43d | 2094 | d_drop(ctx->dentry); |
c6d00e63 | 2095 | nfs4_opendata_put(opendata); |
864472e9 | 2096 | return ret; |
1da177e4 LT |
2097 | } |
2098 | ||
a9ed2e25 | 2099 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2100 | { |
539cd03a | 2101 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2102 | struct nfs4_exception exception = { }; |
2103 | int err; | |
2104 | ||
2105 | do { | |
539cd03a | 2106 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2107 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2108 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2109 | continue; | |
a9ed2e25 TM |
2110 | switch (err) { |
2111 | default: | |
2112 | goto out; | |
2113 | case -NFS4ERR_GRACE: | |
2114 | case -NFS4ERR_DELAY: | |
2115 | nfs4_handle_exception(server, err, &exception); | |
2116 | err = 0; | |
2117 | } | |
202b50dc | 2118 | } while (exception.retry); |
a9ed2e25 | 2119 | out: |
202b50dc TM |
2120 | return err; |
2121 | } | |
2122 | ||
1da177e4 LT |
2123 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2124 | { | |
1da177e4 | 2125 | struct nfs_open_context *ctx; |
864472e9 | 2126 | int ret; |
1da177e4 | 2127 | |
864472e9 TM |
2128 | ctx = nfs4_state_find_open_context(state); |
2129 | if (IS_ERR(ctx)) | |
91876b13 | 2130 | return -EAGAIN; |
539cd03a | 2131 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2132 | put_nfs_open_context(ctx); |
2133 | return ret; | |
1da177e4 LT |
2134 | } |
2135 | ||
4dfd4f7a TM |
2136 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2137 | { | |
2138 | nfs_remove_bad_delegation(state->inode); | |
2139 | write_seqlock(&state->seqlock); | |
2140 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2141 | write_sequnlock(&state->seqlock); | |
2142 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2143 | } | |
2144 | ||
2145 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2146 | { | |
2147 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2148 | nfs_finish_clear_delegation_stateid(state); | |
2149 | } | |
2150 | ||
2151 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2152 | { | |
2153 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2154 | nfs40_clear_delegation_stateid(state); | |
2155 | return nfs4_open_expired(sp, state); | |
2156 | } | |
2157 | ||
f062eb6c | 2158 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2159 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2160 | { |
f062eb6c | 2161 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2162 | nfs4_stateid stateid; |
ab7cb0df | 2163 | struct nfs_delegation *delegation; |
0c116cad TM |
2164 | struct rpc_cred *cred; |
2165 | int status; | |
3e60ffdd | 2166 | |
ab7cb0df TM |
2167 | /* Get the delegation credential for use by test/free_stateid */ |
2168 | rcu_read_lock(); | |
2169 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2170 | if (delegation == NULL) { |
ab7cb0df | 2171 | rcu_read_unlock(); |
0c116cad TM |
2172 | return; |
2173 | } | |
2174 | ||
2175 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2176 | cred = get_rpccred(delegation->cred); | |
2177 | rcu_read_unlock(); | |
2178 | status = nfs41_test_stateid(server, &stateid, cred); | |
2179 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2180 | |
3e60ffdd CL |
2181 | if (status != NFS_OK) { |
2182 | /* Free the stateid unless the server explicitly | |
2183 | * informs us the stateid is unrecognized. */ | |
2184 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2185 | nfs41_free_stateid(server, &stateid, cred); |
2186 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2187 | } |
ab7cb0df | 2188 | |
0c116cad | 2189 | put_rpccred(cred); |
3e60ffdd CL |
2190 | } |
2191 | ||
2192 | /** | |
2193 | * nfs41_check_open_stateid - possibly free an open stateid | |
2194 | * | |
2195 | * @state: NFSv4 state for an inode | |
2196 | * | |
2197 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2198 | * Otherwise a negative NFS4ERR value is returned. | |
2199 | */ | |
2200 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2201 | { | |
2202 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2203 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2204 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2205 | int status; |
2206 | ||
2207 | /* If a state reset has been done, test_stateid is unneeded */ | |
2208 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2209 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2210 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2211 | return -NFS4ERR_BAD_STATEID; | |
2212 | ||
ab7cb0df | 2213 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2214 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2215 | if (status != NFS_OK) { |
2216 | /* Free the stateid unless the server explicitly | |
2217 | * informs us the stateid is unrecognized. */ | |
2218 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2219 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2220 | |
2221 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2222 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2223 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2224 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2225 | } |
2226 | return status; | |
2227 | } | |
2228 | ||
2229 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2230 | { | |
eb64cf96 | 2231 | int status; |
b01dd1d8 | 2232 | |
0c116cad | 2233 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2234 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2235 | if (status != NFS_OK) |
2236 | status = nfs4_open_expired(sp, state); | |
2237 | return status; | |
f062eb6c BS |
2238 | } |
2239 | #endif | |
2240 | ||
aa53ed54 JL |
2241 | /* |
2242 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2243 | * fields corresponding to attributes that were used to store the verifier. | |
2244 | * Make sure we clobber those fields in the later setattr call | |
2245 | */ | |
2246 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2247 | { | |
2248 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2249 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2250 | sattr->ia_valid |= ATTR_ATIME; | |
2251 | ||
2252 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2253 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2254 | sattr->ia_valid |= ATTR_MTIME; | |
2255 | } | |
2256 | ||
c21443c2 TM |
2257 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2258 | fmode_t fmode, | |
2259 | int flags, | |
3efb9722 | 2260 | struct nfs_open_context *ctx) |
c21443c2 TM |
2261 | { |
2262 | struct nfs4_state_owner *sp = opendata->owner; | |
2263 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2264 | struct dentry *dentry; |
c21443c2 TM |
2265 | struct nfs4_state *state; |
2266 | unsigned int seq; | |
2267 | int ret; | |
2268 | ||
2269 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2270 | ||
2271 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2272 | if (ret != 0) |
c21443c2 TM |
2273 | goto out; |
2274 | ||
2275 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2276 | ret = PTR_ERR(state); | |
2277 | if (IS_ERR(state)) | |
2278 | goto out; | |
2279 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2280 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2281 | ||
275bb307 TM |
2282 | dentry = opendata->dentry; |
2283 | if (dentry->d_inode == NULL) { | |
2284 | /* FIXME: Is this d_drop() ever needed? */ | |
2285 | d_drop(dentry); | |
2286 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2287 | if (dentry == NULL) { | |
2288 | dentry = opendata->dentry; | |
2289 | } else if (dentry != ctx->dentry) { | |
2290 | dput(ctx->dentry); | |
2291 | ctx->dentry = dget(dentry); | |
2292 | } | |
2293 | nfs_set_verifier(dentry, | |
2294 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2295 | } | |
2296 | ||
c21443c2 TM |
2297 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2298 | if (ret != 0) | |
2299 | goto out; | |
2300 | ||
3efb9722 | 2301 | ctx->state = state; |
c45ffdd2 TM |
2302 | if (dentry->d_inode == state->inode) { |
2303 | nfs_inode_attach_open_context(ctx); | |
2304 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2305 | nfs4_schedule_stateid_recovery(server, state); | |
2306 | } | |
c21443c2 TM |
2307 | out: |
2308 | return ret; | |
2309 | } | |
2310 | ||
1da177e4 | 2311 | /* |
24ac23ab | 2312 | * Returns a referenced nfs4_state |
1da177e4 | 2313 | */ |
82be417a | 2314 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2315 | struct nfs_open_context *ctx, |
82be417a AA |
2316 | int flags, |
2317 | struct iattr *sattr, | |
5bc2afc2 TM |
2318 | struct nfs4_label *label, |
2319 | int *opened) | |
1da177e4 LT |
2320 | { |
2321 | struct nfs4_state_owner *sp; | |
2322 | struct nfs4_state *state = NULL; | |
2323 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2324 | struct nfs4_opendata *opendata; |
4197a055 TM |
2325 | struct dentry *dentry = ctx->dentry; |
2326 | struct rpc_cred *cred = ctx->cred; | |
2327 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2328 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2329 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2330 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2331 | int status; |
1da177e4 LT |
2332 | |
2333 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2334 | status = -ENOMEM; |
d1e284d5 TM |
2335 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2336 | if (sp == NULL) { | |
1da177e4 LT |
2337 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2338 | goto out_err; | |
2339 | } | |
58d9714a TM |
2340 | status = nfs4_recover_expired_lease(server); |
2341 | if (status != 0) | |
b4454fe1 | 2342 | goto err_put_state_owner; |
82a2c1b7 AV |
2343 | if (dentry->d_inode != NULL) |
2344 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2345 | status = -ENOMEM; |
49f9a0fa TM |
2346 | if (dentry->d_inode) |
2347 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2348 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2349 | label, claim, GFP_KERNEL); |
e56e0b78 | 2350 | if (opendata == NULL) |
95d35cb4 | 2351 | goto err_put_state_owner; |
1da177e4 | 2352 | |
14c43f76 DQ |
2353 | if (label) { |
2354 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2355 | if (IS_ERR(olabel)) { | |
2356 | status = PTR_ERR(olabel); | |
2357 | goto err_opendata_put; | |
2358 | } | |
2359 | } | |
2360 | ||
e911b815 TM |
2361 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2362 | if (!opendata->f_attr.mdsthreshold) { | |
2363 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2364 | if (!opendata->f_attr.mdsthreshold) | |
2365 | goto err_free_label; | |
2366 | } | |
1549210f | 2367 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2368 | } |
82a2c1b7 AV |
2369 | if (dentry->d_inode != NULL) |
2370 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2371 | |
3efb9722 | 2372 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2373 | if (status != 0) |
14c43f76 | 2374 | goto err_free_label; |
3efb9722 | 2375 | state = ctx->state; |
6168f62c | 2376 | |
549b19cc TM |
2377 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2378 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2379 | nfs4_exclusive_attrset(opendata, sattr); |
2380 | ||
2381 | nfs_fattr_init(opendata->o_res.f_attr); | |
2382 | status = nfs4_do_setattr(state->inode, cred, | |
2383 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2384 | state, label, olabel); |
2385 | if (status == 0) { | |
0ab64e0e | 2386 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2387 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2388 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2389 | } |
0ab64e0e | 2390 | } |
5bc2afc2 TM |
2391 | if (opendata->file_created) |
2392 | *opened |= FILE_CREATED; | |
82be417a | 2393 | |
e911b815 | 2394 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2395 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2396 | opendata->f_attr.mdsthreshold = NULL; |
2397 | } | |
82be417a | 2398 | |
14c43f76 DQ |
2399 | nfs4_label_free(olabel); |
2400 | ||
c6d00e63 | 2401 | nfs4_opendata_put(opendata); |
1da177e4 | 2402 | nfs4_put_state_owner(sp); |
1da177e4 | 2403 | return 0; |
14c43f76 DQ |
2404 | err_free_label: |
2405 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2406 | err_opendata_put: |
2407 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2408 | err_put_state_owner: |
2409 | nfs4_put_state_owner(sp); | |
1da177e4 | 2410 | out_err: |
1da177e4 LT |
2411 | return status; |
2412 | } | |
2413 | ||
2414 | ||
82be417a | 2415 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2416 | struct nfs_open_context *ctx, |
82be417a AA |
2417 | int flags, |
2418 | struct iattr *sattr, | |
5bc2afc2 TM |
2419 | struct nfs4_label *label, |
2420 | int *opened) | |
1da177e4 | 2421 | { |
49f9a0fa | 2422 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2423 | struct nfs4_exception exception = { }; |
2424 | struct nfs4_state *res; | |
2425 | int status; | |
2426 | ||
2427 | do { | |
5bc2afc2 | 2428 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2429 | res = ctx->state; |
42113a75 | 2430 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2431 | if (status == 0) |
2432 | break; | |
2433 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2434 | * book-keeping w.r.t. state-changing operations | |
2435 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2436 | * It is actually a sign of a bug on the client or on the server. | |
2437 | * | |
2438 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2439 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2440 | * have unhashed the old state_owner for us, and that we can |
2441 | * therefore safely retry using a new one. We should still warn | |
2442 | * the user though... | |
2443 | */ | |
2444 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2445 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2446 | " returned a bad sequence-id error!\n", |
2447 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2448 | exception.retry = 1; |
2449 | continue; | |
2450 | } | |
550f5747 TM |
2451 | /* |
2452 | * BAD_STATEID on OPEN means that the server cancelled our | |
2453 | * state before it received the OPEN_CONFIRM. | |
2454 | * Recover by retrying the request as per the discussion | |
2455 | * on Page 181 of RFC3530. | |
2456 | */ | |
2457 | if (status == -NFS4ERR_BAD_STATEID) { | |
2458 | exception.retry = 1; | |
2459 | continue; | |
2460 | } | |
aac00a8d TM |
2461 | if (status == -EAGAIN) { |
2462 | /* We must have found a delegation */ | |
2463 | exception.retry = 1; | |
2464 | continue; | |
2465 | } | |
49f9a0fa TM |
2466 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2467 | continue; | |
2468 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2469 | status, &exception)); |
2470 | } while (exception.retry); | |
2471 | return res; | |
2472 | } | |
2473 | ||
659bfcd6 TM |
2474 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2475 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2476 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2477 | struct nfs4_label *olabel) | |
1da177e4 | 2478 | { |
3e4f6290 | 2479 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2480 | struct nfs_setattrargs arg = { |
3e4f6290 | 2481 | .fh = NFS_FH(inode), |
1da177e4 LT |
2482 | .iap = sattr, |
2483 | .server = server, | |
2484 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2485 | .label = ilabel, |
1da177e4 LT |
2486 | }; |
2487 | struct nfs_setattrres res = { | |
2488 | .fattr = fattr, | |
1775fd3e | 2489 | .label = olabel, |
1da177e4 LT |
2490 | .server = server, |
2491 | }; | |
2492 | struct rpc_message msg = { | |
659bfcd6 TM |
2493 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2494 | .rpc_argp = &arg, | |
2495 | .rpc_resp = &res, | |
2496 | .rpc_cred = cred, | |
1da177e4 | 2497 | }; |
26e976a8 | 2498 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2499 | fmode_t fmode; |
2500 | bool truncate; | |
65e4308d | 2501 | int status; |
1da177e4 | 2502 | |
aa9c2669 DQ |
2503 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2504 | if (ilabel) | |
2505 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2506 | ||
0e574af1 | 2507 | nfs_fattr_init(fattr); |
1da177e4 | 2508 | |
ee3ae84e TM |
2509 | /* Servers should only apply open mode checks for file size changes */ |
2510 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2511 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2512 | ||
2513 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2514 | /* Use that stateid */ | |
0418dae1 | 2515 | } else if (truncate && state != NULL) { |
2a369153 TM |
2516 | struct nfs_lockowner lockowner = { |
2517 | .l_owner = current->files, | |
2518 | .l_pid = current->tgid, | |
2519 | }; | |
0418dae1 TM |
2520 | if (!nfs4_valid_open_stateid(state)) |
2521 | return -EBADF; | |
2522 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2523 | &lockowner) == -EIO) | |
2524 | return -EBADF; | |
08e9eac4 | 2525 | } else |
f597c537 | 2526 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2527 | |
7c513058 | 2528 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2529 | if (status == 0 && state != NULL) |
2530 | renew_lease(server, timestamp); | |
65e4308d | 2531 | return status; |
1da177e4 LT |
2532 | } |
2533 | ||
659bfcd6 TM |
2534 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2535 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2536 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2537 | struct nfs4_label *olabel) | |
1da177e4 | 2538 | { |
3e4f6290 | 2539 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2540 | struct nfs4_exception exception = { |
2541 | .state = state, | |
3114ea7a | 2542 | .inode = inode, |
a1d0b5ee | 2543 | }; |
1da177e4 LT |
2544 | int err; |
2545 | do { | |
1775fd3e | 2546 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2547 | trace_nfs4_setattr(inode, err); |
451146be TM |
2548 | switch (err) { |
2549 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2550 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2551 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2552 | "applying open mode checks to " | |
2553 | "a SETATTR that is not " | |
2554 | "changing file size.\n", | |
2555 | server->nfs_client->cl_hostname); | |
2556 | } | |
451146be TM |
2557 | if (state && !(state->state & FMODE_WRITE)) { |
2558 | err = -EBADF; | |
2559 | if (sattr->ia_valid & ATTR_OPEN) | |
2560 | err = -EACCES; | |
2561 | goto out; | |
2562 | } | |
2563 | } | |
2564 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2565 | } while (exception.retry); |
451146be | 2566 | out: |
1da177e4 LT |
2567 | return err; |
2568 | } | |
2569 | ||
2570 | struct nfs4_closedata { | |
2571 | struct inode *inode; | |
2572 | struct nfs4_state *state; | |
2573 | struct nfs_closeargs arg; | |
2574 | struct nfs_closeres res; | |
516a6af6 | 2575 | struct nfs_fattr fattr; |
26e976a8 | 2576 | unsigned long timestamp; |
f7e8917a FI |
2577 | bool roc; |
2578 | u32 roc_barrier; | |
1da177e4 LT |
2579 | }; |
2580 | ||
963d8fe5 | 2581 | static void nfs4_free_closedata(void *data) |
9512135d | 2582 | { |
963d8fe5 TM |
2583 | struct nfs4_closedata *calldata = data; |
2584 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2585 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2586 | |
f7e8917a FI |
2587 | if (calldata->roc) |
2588 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2589 | nfs4_put_open_state(calldata->state); |
2590 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2591 | nfs4_put_state_owner(sp); |
322b2b90 | 2592 | nfs_sb_deactive(sb); |
9512135d TM |
2593 | kfree(calldata); |
2594 | } | |
2595 | ||
963d8fe5 | 2596 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2597 | { |
963d8fe5 | 2598 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2599 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2600 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2601 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2602 | |
a3ca5651 | 2603 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2604 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2605 | return; | |
42113a75 | 2606 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2607 | /* hmm. we are done with the inode, and in the process of freeing |
2608 | * the state_owner. we keep this around to process errors | |
2609 | */ | |
1da177e4 LT |
2610 | switch (task->tk_status) { |
2611 | case 0: | |
412f6c4c TM |
2612 | res_stateid = &calldata->res.stateid; |
2613 | if (calldata->arg.fmode == 0 && calldata->roc) | |
f7e8917a FI |
2614 | pnfs_roc_set_barrier(state->inode, |
2615 | calldata->roc_barrier); | |
26e976a8 | 2616 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2617 | break; |
69794ad7 | 2618 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2619 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2620 | case -NFS4ERR_OLD_STATEID: |
2621 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2622 | case -NFS4ERR_EXPIRED: |
566fcec6 TM |
2623 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
2624 | &state->stateid)) { | |
2625 | rpc_restart_call_prepare(task); | |
2626 | goto out_release; | |
2627 | } | |
dc0b027d | 2628 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2629 | break; |
1da177e4 | 2630 | default: |
8478eaa1 | 2631 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2632 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2633 | goto out_release; |
2634 | } | |
1da177e4 | 2635 | } |
412f6c4c | 2636 | nfs_clear_open_stateid(state, res_stateid, calldata->arg.fmode); |
69794ad7 | 2637 | out_release: |
72211dbe | 2638 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2639 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2640 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2641 | } |
2642 | ||
4ce70ada | 2643 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2644 | { |
4ce70ada | 2645 | struct nfs4_closedata *calldata = data; |
9512135d | 2646 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2647 | struct inode *inode = calldata->inode; |
aee7af35 | 2648 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2649 | int call_close = 0; |
9512135d | 2650 | |
a3ca5651 | 2651 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2652 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2653 | goto out_wait; |
003707c7 | 2654 | |
88069f77 | 2655 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2656 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2657 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2658 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2659 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
566fcec6 | 2660 | nfs4_stateid_copy(&calldata->arg.stateid, &state->stateid); |
003707c7 | 2661 | /* Calculate the change in open mode */ |
cd9288ff | 2662 | calldata->arg.fmode = 0; |
e7616923 | 2663 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2664 | if (state->n_rdonly == 0) |
2665 | call_close |= is_rdonly; | |
2666 | else if (is_rdonly) | |
2667 | calldata->arg.fmode |= FMODE_READ; | |
2668 | if (state->n_wronly == 0) | |
2669 | call_close |= is_wronly; | |
2670 | else if (is_wronly) | |
2671 | calldata->arg.fmode |= FMODE_WRITE; | |
2672 | } else if (is_rdwr) | |
2673 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2674 | ||
2675 | if (calldata->arg.fmode == 0) | |
2676 | call_close |= is_rdwr; | |
2677 | ||
5d422301 TM |
2678 | if (!nfs4_valid_open_stateid(state)) |
2679 | call_close = 0; | |
4cecb76f | 2680 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2681 | |
2682 | if (!call_close) { | |
963d8fe5 | 2683 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2684 | goto out_no_action; |
9512135d | 2685 | } |
88069f77 | 2686 | |
f7e8917a | 2687 | if (calldata->arg.fmode == 0) { |
88069f77 | 2688 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2689 | if (calldata->roc && |
b9536ad5 AA |
2690 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2691 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2692 | goto out_wait; |
b9536ad5 | 2693 | } |
f7e8917a | 2694 | } |
88069f77 | 2695 | |
516a6af6 | 2696 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2697 | calldata->timestamp = jiffies; |
7fdab069 | 2698 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2699 | &calldata->arg.seq_args, |
2700 | &calldata->res.seq_res, | |
2240a9e2 TM |
2701 | task) != 0) |
2702 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2703 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2704 | return; |
2705 | out_no_action: | |
2706 | task->tk_action = NULL; | |
2707 | out_wait: | |
2708 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2709 | } |
2710 | ||
963d8fe5 | 2711 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2712 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2713 | .rpc_call_done = nfs4_close_done, |
2714 | .rpc_release = nfs4_free_closedata, | |
2715 | }; | |
2716 | ||
fe08c546 PT |
2717 | static bool nfs4_state_has_opener(struct nfs4_state *state) |
2718 | { | |
2719 | /* first check existing openers */ | |
2720 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 && | |
2721 | state->n_rdonly != 0) | |
2722 | return true; | |
2723 | ||
2724 | if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 && | |
2725 | state->n_wronly != 0) | |
2726 | return true; | |
2727 | ||
2728 | if (test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 && | |
2729 | state->n_rdwr != 0) | |
2730 | return true; | |
2731 | ||
2732 | return false; | |
2733 | } | |
2734 | ||
2735 | static bool nfs4_roc(struct inode *inode) | |
2736 | { | |
2737 | struct nfs_inode *nfsi = NFS_I(inode); | |
2738 | struct nfs_open_context *ctx; | |
2739 | struct nfs4_state *state; | |
2740 | ||
2741 | spin_lock(&inode->i_lock); | |
2742 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
2743 | state = ctx->state; | |
2744 | if (state == NULL) | |
2745 | continue; | |
2746 | if (nfs4_state_has_opener(state)) { | |
2747 | spin_unlock(&inode->i_lock); | |
2748 | return false; | |
2749 | } | |
2750 | } | |
2751 | spin_unlock(&inode->i_lock); | |
2752 | ||
2753 | if (nfs4_check_delegation(inode, FMODE_READ)) | |
2754 | return false; | |
2755 | ||
2756 | return pnfs_roc(inode); | |
2757 | } | |
2758 | ||
1da177e4 LT |
2759 | /* |
2760 | * It is possible for data to be read/written from a mem-mapped file | |
2761 | * after the sys_close call (which hits the vfs layer as a flush). | |
2762 | * This means that we can't safely call nfsv4 close on a file until | |
2763 | * the inode is cleared. This in turn means that we are not good | |
2764 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2765 | * share state even when we are done with one of the three share | |
2766 | * stateid's in the inode. | |
2767 | * | |
2768 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2769 | */ | |
1f7977c1 | 2770 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2771 | { |
4a35bd41 | 2772 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2773 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2774 | struct nfs4_closedata *calldata; |
b39e625b TM |
2775 | struct nfs4_state_owner *sp = state->owner; |
2776 | struct rpc_task *task; | |
5138fde0 TM |
2777 | struct rpc_message msg = { |
2778 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2779 | .rpc_cred = state->owner->so_cred, | |
2780 | }; | |
c970aa85 TM |
2781 | struct rpc_task_setup task_setup_data = { |
2782 | .rpc_client = server->client, | |
5138fde0 | 2783 | .rpc_message = &msg, |
c970aa85 | 2784 | .callback_ops = &nfs4_close_ops, |
101070ca | 2785 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2786 | .flags = RPC_TASK_ASYNC, |
2787 | }; | |
9512135d | 2788 | int status = -ENOMEM; |
1da177e4 | 2789 | |
fa940720 WAA |
2790 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2791 | &task_setup_data.rpc_client, &msg); | |
2792 | ||
8535b2be | 2793 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2794 | if (calldata == NULL) |
9512135d | 2795 | goto out; |
a9c92d6b | 2796 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2797 | calldata->inode = state->inode; |
1da177e4 | 2798 | calldata->state = state; |
4a35bd41 | 2799 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2800 | /* Serialization for the sequence id */ |
63f5f796 TM |
2801 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2802 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2803 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2804 | goto out_free_calldata; |
dc0b027d | 2805 | calldata->arg.fmode = 0; |
a65318bf | 2806 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2807 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2808 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2809 | calldata->res.server = server; |
fe08c546 | 2810 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2811 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2812 | |
1174dd1f TM |
2813 | msg.rpc_argp = &calldata->arg; |
2814 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2815 | task_setup_data.callback_data = calldata; |
2816 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2817 | if (IS_ERR(task)) |
2818 | return PTR_ERR(task); | |
a49c3c77 TM |
2819 | status = 0; |
2820 | if (wait) | |
2821 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2822 | rpc_put_task(task); |
a49c3c77 | 2823 | return status; |
9512135d TM |
2824 | out_free_calldata: |
2825 | kfree(calldata); | |
2826 | out: | |
b39e625b TM |
2827 | nfs4_put_open_state(state); |
2828 | nfs4_put_state_owner(sp); | |
9512135d | 2829 | return status; |
1da177e4 LT |
2830 | } |
2831 | ||
2b484297 | 2832 | static struct inode * |
5bc2afc2 TM |
2833 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2834 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2835 | { |
1da177e4 | 2836 | struct nfs4_state *state; |
aa9c2669 DQ |
2837 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2838 | ||
2839 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2840 | |
565277f6 | 2841 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2842 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2843 | |
2844 | nfs4_label_release_security(label); | |
2845 | ||
f46e0bd3 TM |
2846 | if (IS_ERR(state)) |
2847 | return ERR_CAST(state); | |
275bb307 | 2848 | return state->inode; |
1da177e4 LT |
2849 | } |
2850 | ||
1185a552 | 2851 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2852 | { |
2853 | if (ctx->state == NULL) | |
2854 | return; | |
2855 | if (is_sync) | |
643168c2 | 2856 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2857 | else |
643168c2 | 2858 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2859 | } |
1da177e4 | 2860 | |
b944dba3 TM |
2861 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2862 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 2863 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 2864 | |
1da177e4 LT |
2865 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2866 | { | |
43652ad5 BH |
2867 | struct nfs4_server_caps_arg args = { |
2868 | .fhandle = fhandle, | |
2869 | }; | |
1da177e4 LT |
2870 | struct nfs4_server_caps_res res = {}; |
2871 | struct rpc_message msg = { | |
2872 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2873 | .rpc_argp = &args, |
1da177e4 LT |
2874 | .rpc_resp = &res, |
2875 | }; | |
2876 | int status; | |
2877 | ||
7c513058 | 2878 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2879 | if (status == 0) { |
b944dba3 TM |
2880 | /* Sanity check the server answers */ |
2881 | switch (server->nfs_client->cl_minorversion) { | |
2882 | case 0: | |
2883 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
2884 | res.attr_bitmask[2] = 0; | |
2885 | break; | |
2886 | case 1: | |
2887 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
2888 | break; | |
2889 | case 2: | |
2890 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
2891 | } | |
1da177e4 | 2892 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
2893 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2894 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2895 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2896 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
2897 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
2898 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
2899 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
2900 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
2901 | server->caps |= NFS_CAP_ACLS; |
2902 | if (res.has_links != 0) | |
2903 | server->caps |= NFS_CAP_HARDLINKS; | |
2904 | if (res.has_symlinks != 0) | |
2905 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2906 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2907 | server->caps |= NFS_CAP_FILEID; | |
2908 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2909 | server->caps |= NFS_CAP_MODE; | |
2910 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2911 | server->caps |= NFS_CAP_NLINK; | |
2912 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2913 | server->caps |= NFS_CAP_OWNER; | |
2914 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2915 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2916 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2917 | server->caps |= NFS_CAP_ATIME; | |
2918 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2919 | server->caps |= NFS_CAP_CTIME; | |
2920 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2921 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2922 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2923 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2924 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2925 | #endif | |
2926 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2927 | sizeof(server->attr_bitmask)); | |
b944dba3 | 2928 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 2929 | |
a65318bf TM |
2930 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2931 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2932 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 2933 | server->cache_consistency_bitmask[2] = 0; |
1da177e4 | 2934 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2935 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2936 | } |
cccef3b9 | 2937 | |
1da177e4 LT |
2938 | return status; |
2939 | } | |
2940 | ||
55a97593 | 2941 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2942 | { |
2943 | struct nfs4_exception exception = { }; | |
2944 | int err; | |
2945 | do { | |
2946 | err = nfs4_handle_exception(server, | |
2947 | _nfs4_server_capabilities(server, fhandle), | |
2948 | &exception); | |
2949 | } while (exception.retry); | |
2950 | return err; | |
2951 | } | |
2952 | ||
2953 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2954 | struct nfs_fsinfo *info) | |
2955 | { | |
aa9c2669 | 2956 | u32 bitmask[3]; |
1da177e4 | 2957 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2958 | .bitmask = bitmask, |
1da177e4 LT |
2959 | }; |
2960 | struct nfs4_lookup_res res = { | |
2961 | .server = server, | |
0e574af1 | 2962 | .fattr = info->fattr, |
1da177e4 LT |
2963 | .fh = fhandle, |
2964 | }; | |
2965 | struct rpc_message msg = { | |
2966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2967 | .rpc_argp = &args, | |
2968 | .rpc_resp = &res, | |
2969 | }; | |
008f55d0 | 2970 | |
aa9c2669 DQ |
2971 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2972 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2973 | /* | |
2974 | * Process the label in the upcoming getfattr | |
2975 | */ | |
2976 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2977 | ||
0e574af1 | 2978 | nfs_fattr_init(info->fattr); |
7c513058 | 2979 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2980 | } |
2981 | ||
2982 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2983 | struct nfs_fsinfo *info) | |
2984 | { | |
2985 | struct nfs4_exception exception = { }; | |
2986 | int err; | |
2987 | do { | |
fb8a5ba8 | 2988 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2989 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2990 | switch (err) { |
2991 | case 0: | |
2992 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2993 | goto out; |
fb8a5ba8 BS |
2994 | default: |
2995 | err = nfs4_handle_exception(server, err, &exception); | |
2996 | } | |
1da177e4 | 2997 | } while (exception.retry); |
05e9cfb4 | 2998 | out: |
1da177e4 LT |
2999 | return err; |
3000 | } | |
3001 | ||
8f70e95f BS |
3002 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3003 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3004 | { | |
c2190661 TM |
3005 | struct rpc_auth_create_args auth_args = { |
3006 | .pseudoflavor = flavor, | |
3007 | }; | |
8f70e95f BS |
3008 | struct rpc_auth *auth; |
3009 | int ret; | |
3010 | ||
c2190661 | 3011 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3012 | if (IS_ERR(auth)) { |
75bc8821 | 3013 | ret = -EACCES; |
8f70e95f BS |
3014 | goto out; |
3015 | } | |
3016 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3017 | out: |
3018 | return ret; | |
3019 | } | |
3020 | ||
9a744ba3 CL |
3021 | /* |
3022 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3023 | * | |
3024 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3025 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3026 | * | |
3027 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3028 | * negative errno value. | |
3029 | */ | |
801a16dc | 3030 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3031 | struct nfs_fsinfo *info) |
1da177e4 | 3032 | { |
9a744ba3 CL |
3033 | /* Per 3530bis 15.33.5 */ |
3034 | static const rpc_authflavor_t flav_array[] = { | |
3035 | RPC_AUTH_GSS_KRB5P, | |
3036 | RPC_AUTH_GSS_KRB5I, | |
3037 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3038 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3039 | RPC_AUTH_NULL, |
3040 | }; | |
3041 | int status = -EPERM; | |
3042 | size_t i; | |
6a1a1e34 | 3043 | |
4d4b69dd WAA |
3044 | if (server->auth_info.flavor_len > 0) { |
3045 | /* try each flavor specified by user */ | |
3046 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3047 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3048 | server->auth_info.flavors[i]); | |
3049 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3050 | continue; | |
3051 | break; | |
3052 | } | |
3053 | } else { | |
3054 | /* no flavors specified by user, try default list */ | |
3055 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3056 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3057 | flav_array[i]); | |
3058 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3059 | continue; | |
3060 | break; | |
3061 | } | |
8f70e95f | 3062 | } |
9a744ba3 | 3063 | |
fb8a5ba8 BS |
3064 | /* |
3065 | * -EACCESS could mean that the user doesn't have correct permissions | |
3066 | * to access the mount. It could also mean that we tried to mount | |
3067 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3068 | * existing mount programs don't handle -EACCES very well so it should | |
3069 | * be mapped to -EPERM instead. | |
3070 | */ | |
3071 | if (status == -EACCES) | |
3072 | status = -EPERM; | |
801a16dc BS |
3073 | return status; |
3074 | } | |
3075 | ||
2ed4b95b CL |
3076 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3077 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3078 | { | |
3079 | int mv = server->nfs_client->cl_minorversion; | |
3080 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3081 | } | |
3082 | ||
3083 | /** | |
3084 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3085 | * @server: initialized nfs_server handle | |
3086 | * @fhandle: we fill in the pseudo-fs root file handle | |
3087 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3088 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3089 | * |
3090 | * Returns zero on success, or a negative errno. | |
801a16dc | 3091 | */ |
3028eb2b | 3092 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3093 | struct nfs_fsinfo *info, |
3094 | bool auth_probe) | |
801a16dc | 3095 | { |
2ed4b95b CL |
3096 | int status; |
3097 | ||
5e6b1990 TM |
3098 | switch (auth_probe) { |
3099 | case false: | |
3100 | status = nfs4_lookup_root(server, fhandle, info); | |
3101 | if (status != -NFS4ERR_WRONGSEC) | |
3102 | break; | |
5e6b1990 | 3103 | default: |
2ed4b95b | 3104 | status = nfs4_do_find_root_sec(server, fhandle, info); |
5e6b1990 | 3105 | } |
2ed4b95b | 3106 | |
1da177e4 LT |
3107 | if (status == 0) |
3108 | status = nfs4_server_capabilities(server, fhandle); | |
3109 | if (status == 0) | |
3110 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3111 | |
c12e87f4 | 3112 | return nfs4_map_errors(status); |
1da177e4 LT |
3113 | } |
3114 | ||
bae36241 BS |
3115 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3116 | struct nfs_fsinfo *info) | |
3117 | { | |
3118 | int error; | |
3119 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3120 | struct nfs4_label *label = NULL; |
bae36241 BS |
3121 | |
3122 | error = nfs4_server_capabilities(server, mntfh); | |
3123 | if (error < 0) { | |
3124 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3125 | return error; | |
3126 | } | |
3127 | ||
14c43f76 DQ |
3128 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3129 | if (IS_ERR(label)) | |
3130 | return PTR_ERR(label); | |
3131 | ||
1775fd3e | 3132 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3133 | if (error < 0) { |
3134 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3135 | goto err_free_label; |
bae36241 BS |
3136 | } |
3137 | ||
3138 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3139 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3140 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3141 | ||
14c43f76 DQ |
3142 | err_free_label: |
3143 | nfs4_label_free(label); | |
3144 | ||
bae36241 BS |
3145 | return error; |
3146 | } | |
3147 | ||
6b97fd3d MN |
3148 | /* |
3149 | * Get locations and (maybe) other attributes of a referral. | |
3150 | * Note that we'll actually follow the referral later when | |
3151 | * we detect fsid mismatch in inode revalidation | |
3152 | */ | |
f05d147f BS |
3153 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3154 | const struct qstr *name, struct nfs_fattr *fattr, | |
3155 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3156 | { |
3157 | int status = -ENOMEM; | |
3158 | struct page *page = NULL; | |
3159 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3160 | |
3161 | page = alloc_page(GFP_KERNEL); | |
3162 | if (page == NULL) | |
3163 | goto out; | |
3164 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3165 | if (locations == NULL) | |
3166 | goto out; | |
3167 | ||
f05d147f | 3168 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3169 | if (status != 0) |
3170 | goto out; | |
519ae255 CL |
3171 | |
3172 | /* | |
3173 | * If the fsid didn't change, this is a migration event, not a | |
3174 | * referral. Cause us to drop into the exception handler, which | |
3175 | * will kick off migration recovery. | |
3176 | */ | |
6b97fd3d | 3177 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3178 | dprintk("%s: server did not return a different fsid for" |
3179 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3180 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3181 | goto out; |
3182 | } | |
533eb461 AA |
3183 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3184 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3185 | |
533eb461 | 3186 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3187 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3188 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3189 | out: | |
3190 | if (page) | |
3191 | __free_page(page); | |
5d7ca35a | 3192 | kfree(locations); |
6b97fd3d MN |
3193 | return status; |
3194 | } | |
3195 | ||
1775fd3e DQ |
3196 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3197 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3198 | { |
3199 | struct nfs4_getattr_arg args = { | |
3200 | .fh = fhandle, | |
3201 | .bitmask = server->attr_bitmask, | |
3202 | }; | |
3203 | struct nfs4_getattr_res res = { | |
3204 | .fattr = fattr, | |
1775fd3e | 3205 | .label = label, |
1da177e4 LT |
3206 | .server = server, |
3207 | }; | |
3208 | struct rpc_message msg = { | |
3209 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3210 | .rpc_argp = &args, | |
3211 | .rpc_resp = &res, | |
3212 | }; | |
aa9c2669 DQ |
3213 | |
3214 | args.bitmask = nfs4_bitmask(server, label); | |
3215 | ||
0e574af1 | 3216 | nfs_fattr_init(fattr); |
7c513058 | 3217 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3218 | } |
3219 | ||
1775fd3e DQ |
3220 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3221 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3222 | { |
3223 | struct nfs4_exception exception = { }; | |
3224 | int err; | |
3225 | do { | |
b5f875a9 TM |
3226 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3227 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3228 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3229 | &exception); |
3230 | } while (exception.retry); | |
3231 | return err; | |
3232 | } | |
3233 | ||
3234 | /* | |
3235 | * The file is not closed if it is opened due to the a request to change | |
3236 | * the size of the file. The open call will not be needed once the | |
3237 | * VFS layer lookup-intents are implemented. | |
3238 | * | |
3239 | * Close is called when the inode is destroyed. | |
3240 | * If we haven't opened the file for O_WRONLY, we | |
3241 | * need to in the size_change case to obtain a stateid. | |
3242 | * | |
3243 | * Got race? | |
3244 | * Because OPEN is always done by name in nfsv4, it is | |
3245 | * possible that we opened a different file by the same | |
3246 | * name. We can recognize this race condition, but we | |
3247 | * can't do anything about it besides returning an error. | |
3248 | * | |
3249 | * This will be fixed with VFS changes (lookup-intent). | |
3250 | */ | |
3251 | static int | |
3252 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3253 | struct iattr *sattr) | |
3254 | { | |
08e9eac4 | 3255 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3256 | struct rpc_cred *cred = NULL; |
d530838b | 3257 | struct nfs4_state *state = NULL; |
14c43f76 | 3258 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3259 | int status; |
3260 | ||
88ac815c PT |
3261 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3262 | sattr->ia_valid & ATTR_SIZE && | |
3263 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3264 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3265 | |
0e574af1 | 3266 | nfs_fattr_init(fattr); |
1da177e4 | 3267 | |
2669940d AA |
3268 | /* Deal with open(O_TRUNC) */ |
3269 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3270 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3271 | |
3272 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3273 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3274 | return 0; |
3275 | ||
d530838b | 3276 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3277 | if (sattr->ia_valid & ATTR_FILE) { |
3278 | struct nfs_open_context *ctx; | |
3279 | ||
3280 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3281 | if (ctx) { |
3282 | cred = ctx->cred; | |
3283 | state = ctx->state; | |
3284 | } | |
659bfcd6 | 3285 | } |
08e9eac4 | 3286 | |
14c43f76 DQ |
3287 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3288 | if (IS_ERR(label)) | |
3289 | return PTR_ERR(label); | |
3290 | ||
3291 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3292 | if (status == 0) { |
65e4308d | 3293 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3294 | nfs_setsecurity(inode, fattr, label); |
3295 | } | |
14c43f76 | 3296 | nfs4_label_free(label); |
1da177e4 LT |
3297 | return status; |
3298 | } | |
3299 | ||
0c2e53f1 TM |
3300 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3301 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3302 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3303 | { |
0c2e53f1 | 3304 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3305 | int status; |
3306 | struct nfs4_lookup_arg args = { | |
3307 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3308 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3309 | .name = name, |
3310 | }; | |
3311 | struct nfs4_lookup_res res = { | |
3312 | .server = server, | |
3313 | .fattr = fattr, | |
aa9c2669 | 3314 | .label = label, |
2b3de441 DH |
3315 | .fh = fhandle, |
3316 | }; | |
3317 | struct rpc_message msg = { | |
3318 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3319 | .rpc_argp = &args, | |
3320 | .rpc_resp = &res, | |
3321 | }; | |
3322 | ||
aa9c2669 DQ |
3323 | args.bitmask = nfs4_bitmask(server, label); |
3324 | ||
2b3de441 DH |
3325 | nfs_fattr_init(fattr); |
3326 | ||
1da177e4 | 3327 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3328 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3329 | dprintk("NFS reply lookup: %d\n", status); |
3330 | return status; | |
3331 | } | |
3332 | ||
72de53ec | 3333 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3334 | { |
7ebb9315 | 3335 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3336 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3337 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3338 | fattr->nlink = 2; | |
3339 | } | |
3340 | ||
72de53ec BS |
3341 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3342 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3343 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3344 | { |
3345 | struct nfs4_exception exception = { }; | |
72de53ec | 3346 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3347 | int err; |
3348 | do { | |
1775fd3e | 3349 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3350 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3351 | switch (err) { |
08ef7bd3 | 3352 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3353 | err = -ENOENT; |
3354 | goto out; | |
0c2e53f1 | 3355 | case -NFS4ERR_MOVED: |
f05d147f | 3356 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3357 | goto out; |
0c2e53f1 | 3358 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3359 | err = -EPERM; |
3360 | if (client != *clnt) | |
3361 | goto out; | |
66b06860 | 3362 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3363 | if (IS_ERR(client)) |
3364 | return PTR_ERR(client); | |
3365 | ||
3366 | exception.retry = 1; | |
3367 | break; | |
3368 | default: | |
3369 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3370 | } |
1da177e4 | 3371 | } while (exception.retry); |
72de53ec BS |
3372 | |
3373 | out: | |
3374 | if (err == 0) | |
3375 | *clnt = client; | |
3376 | else if (client != *clnt) | |
3377 | rpc_shutdown_client(client); | |
3378 | ||
1da177e4 LT |
3379 | return err; |
3380 | } | |
3381 | ||
80a16b21 | 3382 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3383 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3384 | struct nfs4_label *label) | |
72de53ec BS |
3385 | { |
3386 | int status; | |
3387 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3388 | ||
1775fd3e | 3389 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3390 | if (client != NFS_CLIENT(dir)) { |
3391 | rpc_shutdown_client(client); | |
3392 | nfs_fixup_secinfo_attributes(fattr); | |
3393 | } | |
3394 | return status; | |
3395 | } | |
3396 | ||
f05d147f BS |
3397 | struct rpc_clnt * |
3398 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3399 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3400 | { | |
b72888cb | 3401 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3402 | int status; |
f05d147f | 3403 | |
1775fd3e | 3404 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3405 | if (status < 0) |
f05d147f | 3406 | return ERR_PTR(status); |
b72888cb | 3407 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3408 | } |
3409 | ||
1da177e4 LT |
3410 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3411 | { | |
76b32999 | 3412 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3413 | struct nfs4_accessargs args = { |
3414 | .fh = NFS_FH(inode), | |
a4980e78 | 3415 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3416 | }; |
3417 | struct nfs4_accessres res = { | |
3418 | .server = server, | |
1da177e4 | 3419 | }; |
1da177e4 LT |
3420 | struct rpc_message msg = { |
3421 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3422 | .rpc_argp = &args, | |
3423 | .rpc_resp = &res, | |
3424 | .rpc_cred = entry->cred, | |
3425 | }; | |
3426 | int mode = entry->mask; | |
aa9c2669 | 3427 | int status = 0; |
1da177e4 LT |
3428 | |
3429 | /* | |
3430 | * Determine which access bits we want to ask for... | |
3431 | */ | |
3432 | if (mode & MAY_READ) | |
3433 | args.access |= NFS4_ACCESS_READ; | |
3434 | if (S_ISDIR(inode->i_mode)) { | |
3435 | if (mode & MAY_WRITE) | |
3436 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3437 | if (mode & MAY_EXEC) | |
3438 | args.access |= NFS4_ACCESS_LOOKUP; | |
3439 | } else { | |
3440 | if (mode & MAY_WRITE) | |
3441 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3442 | if (mode & MAY_EXEC) | |
3443 | args.access |= NFS4_ACCESS_EXECUTE; | |
3444 | } | |
c407d41a TM |
3445 | |
3446 | res.fattr = nfs_alloc_fattr(); | |
3447 | if (res.fattr == NULL) | |
3448 | return -ENOMEM; | |
3449 | ||
7c513058 | 3450 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3451 | if (!status) { |
6168f62c | 3452 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3453 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3454 | } |
c407d41a | 3455 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3456 | return status; |
3457 | } | |
3458 | ||
3459 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3460 | { | |
3461 | struct nfs4_exception exception = { }; | |
3462 | int err; | |
3463 | do { | |
c1578b76 TM |
3464 | err = _nfs4_proc_access(inode, entry); |
3465 | trace_nfs4_access(inode, err); | |
3466 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3467 | &exception); |
3468 | } while (exception.retry); | |
3469 | return err; | |
3470 | } | |
3471 | ||
3472 | /* | |
3473 | * TODO: For the time being, we don't try to get any attributes | |
3474 | * along with any of the zero-copy operations READ, READDIR, | |
3475 | * READLINK, WRITE. | |
3476 | * | |
3477 | * In the case of the first three, we want to put the GETATTR | |
3478 | * after the read-type operation -- this is because it is hard | |
3479 | * to predict the length of a GETATTR response in v4, and thus | |
3480 | * align the READ data correctly. This means that the GETATTR | |
3481 | * may end up partially falling into the page cache, and we should | |
3482 | * shift it into the 'tail' of the xdr_buf before processing. | |
3483 | * To do this efficiently, we need to know the total length | |
3484 | * of data received, which doesn't seem to be available outside | |
3485 | * of the RPC layer. | |
3486 | * | |
3487 | * In the case of WRITE, we also want to put the GETATTR after | |
3488 | * the operation -- in this case because we want to make sure | |
140150db | 3489 | * we get the post-operation mtime and size. |
1da177e4 LT |
3490 | * |
3491 | * Both of these changes to the XDR layer would in fact be quite | |
3492 | * minor, but I decided to leave them for a subsequent patch. | |
3493 | */ | |
3494 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3495 | unsigned int pgbase, unsigned int pglen) | |
3496 | { | |
3497 | struct nfs4_readlink args = { | |
3498 | .fh = NFS_FH(inode), | |
3499 | .pgbase = pgbase, | |
3500 | .pglen = pglen, | |
3501 | .pages = &page, | |
3502 | }; | |
f50c7000 | 3503 | struct nfs4_readlink_res res; |
1da177e4 LT |
3504 | struct rpc_message msg = { |
3505 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3506 | .rpc_argp = &args, | |
f50c7000 | 3507 | .rpc_resp = &res, |
1da177e4 LT |
3508 | }; |
3509 | ||
7c513058 | 3510 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3511 | } |
3512 | ||
3513 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3514 | unsigned int pgbase, unsigned int pglen) | |
3515 | { | |
3516 | struct nfs4_exception exception = { }; | |
3517 | int err; | |
3518 | do { | |
c1578b76 TM |
3519 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3520 | trace_nfs4_readlink(inode, err); | |
3521 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3522 | &exception); |
3523 | } while (exception.retry); | |
3524 | return err; | |
3525 | } | |
3526 | ||
1da177e4 | 3527 | /* |
8867fe58 | 3528 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3529 | */ |
1da177e4 LT |
3530 | static int |
3531 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3532 | int flags) |
1da177e4 | 3533 | { |
aa9c2669 | 3534 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3535 | struct nfs_open_context *ctx; |
1da177e4 | 3536 | struct nfs4_state *state; |
5bc2afc2 | 3537 | int opened = 0; |
1da177e4 LT |
3538 | int status = 0; |
3539 | ||
8867fe58 MS |
3540 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3541 | if (IS_ERR(ctx)) | |
3542 | return PTR_ERR(ctx); | |
3543 | ||
aa9c2669 DQ |
3544 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3545 | ||
a8a5da99 | 3546 | sattr->ia_mode &= ~current_umask(); |
5bc2afc2 | 3547 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); |
1da177e4 LT |
3548 | if (IS_ERR(state)) { |
3549 | status = PTR_ERR(state); | |
c0204fd2 | 3550 | goto out; |
1da177e4 | 3551 | } |
1da177e4 | 3552 | out: |
aa9c2669 | 3553 | nfs4_label_release_security(ilabel); |
8867fe58 | 3554 | put_nfs_open_context(ctx); |
1da177e4 LT |
3555 | return status; |
3556 | } | |
3557 | ||
3558 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3559 | { | |
16e42959 | 3560 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3561 | struct nfs_removeargs args = { |
1da177e4 | 3562 | .fh = NFS_FH(dir), |
26fe5750 | 3563 | .name = *name, |
16e42959 | 3564 | }; |
4fdc17b2 | 3565 | struct nfs_removeres res = { |
16e42959 | 3566 | .server = server, |
1da177e4 | 3567 | }; |
1da177e4 | 3568 | struct rpc_message msg = { |
4fdc17b2 TM |
3569 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3570 | .rpc_argp = &args, | |
3571 | .rpc_resp = &res, | |
1da177e4 | 3572 | }; |
778d2817 | 3573 | int status; |
1da177e4 | 3574 | |
7c513058 | 3575 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3576 | if (status == 0) |
16e42959 | 3577 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3578 | return status; |
3579 | } | |
3580 | ||
3581 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3582 | { | |
3583 | struct nfs4_exception exception = { }; | |
3584 | int err; | |
3585 | do { | |
078ea3df TM |
3586 | err = _nfs4_proc_remove(dir, name); |
3587 | trace_nfs4_remove(dir, name, err); | |
3588 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3589 | &exception); |
3590 | } while (exception.retry); | |
3591 | return err; | |
3592 | } | |
3593 | ||
e4eff1a6 | 3594 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3595 | { |
e4eff1a6 TM |
3596 | struct nfs_server *server = NFS_SERVER(dir); |
3597 | struct nfs_removeargs *args = msg->rpc_argp; | |
3598 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3599 | |
e4eff1a6 | 3600 | res->server = server; |
1da177e4 | 3601 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3602 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3603 | |
3604 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3605 | } |
3606 | ||
34e137cc BS |
3607 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3608 | { | |
d9afbd1b TM |
3609 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3610 | &data->args.seq_args, | |
3611 | &data->res.seq_res, | |
3612 | task); | |
1da177e4 LT |
3613 | } |
3614 | ||
e4eff1a6 | 3615 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3616 | { |
078ea3df TM |
3617 | struct nfs_unlinkdata *data = task->tk_calldata; |
3618 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3619 | |
14516c3a TM |
3620 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3621 | return 0; | |
8478eaa1 N |
3622 | if (nfs4_async_handle_error(task, res->server, NULL, |
3623 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3624 | return 0; |
3625 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3626 | return 1; |
1da177e4 LT |
3627 | } |
3628 | ||
d3d4152a JL |
3629 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3630 | { | |
3631 | struct nfs_server *server = NFS_SERVER(dir); | |
3632 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3633 | struct nfs_renameres *res = msg->rpc_resp; | |
3634 | ||
3635 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3636 | res->server = server; |
a9c92d6b | 3637 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3638 | } |
3639 | ||
c6bfa1a1 BS |
3640 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3641 | { | |
d9afbd1b TM |
3642 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3643 | &data->args.seq_args, | |
3644 | &data->res.seq_res, | |
3645 | task); | |
d3d4152a JL |
3646 | } |
3647 | ||
3648 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3649 | struct inode *new_dir) | |
3650 | { | |
fbc6f7c2 TM |
3651 | struct nfs_renamedata *data = task->tk_calldata; |
3652 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3653 | |
3654 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3655 | return 0; | |
8478eaa1 | 3656 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3657 | return 0; |
3658 | ||
3659 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3660 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3661 | return 1; |
3662 | } | |
3663 | ||
1da177e4 LT |
3664 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3665 | { | |
91ba2eee | 3666 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3667 | struct nfs4_link_arg arg = { |
3668 | .fh = NFS_FH(inode), | |
3669 | .dir_fh = NFS_FH(dir), | |
3670 | .name = name, | |
91ba2eee TM |
3671 | .bitmask = server->attr_bitmask, |
3672 | }; | |
91ba2eee TM |
3673 | struct nfs4_link_res res = { |
3674 | .server = server, | |
1775fd3e | 3675 | .label = NULL, |
1da177e4 | 3676 | }; |
1da177e4 LT |
3677 | struct rpc_message msg = { |
3678 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3679 | .rpc_argp = &arg, | |
91ba2eee | 3680 | .rpc_resp = &res, |
1da177e4 | 3681 | }; |
136f2627 TM |
3682 | int status = -ENOMEM; |
3683 | ||
3684 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3685 | if (res.fattr == NULL) |
136f2627 | 3686 | goto out; |
1da177e4 | 3687 | |
14c43f76 DQ |
3688 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3689 | if (IS_ERR(res.label)) { | |
3690 | status = PTR_ERR(res.label); | |
3691 | goto out; | |
3692 | } | |
aa9c2669 | 3693 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3694 | |
7c513058 | 3695 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3696 | if (!status) { |
3697 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3698 | status = nfs_post_op_update_inode(inode, res.fattr); |
3699 | if (!status) | |
3700 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3701 | } |
14c43f76 DQ |
3702 | |
3703 | ||
3704 | nfs4_label_free(res.label); | |
3705 | ||
136f2627 | 3706 | out: |
136f2627 | 3707 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3708 | return status; |
3709 | } | |
3710 | ||
3711 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3712 | { | |
3713 | struct nfs4_exception exception = { }; | |
3714 | int err; | |
3715 | do { | |
3716 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3717 | _nfs4_proc_link(inode, dir, name), | |
3718 | &exception); | |
3719 | } while (exception.retry); | |
3720 | return err; | |
3721 | } | |
3722 | ||
57dc9a57 TM |
3723 | struct nfs4_createdata { |
3724 | struct rpc_message msg; | |
3725 | struct nfs4_create_arg arg; | |
3726 | struct nfs4_create_res res; | |
3727 | struct nfs_fh fh; | |
3728 | struct nfs_fattr fattr; | |
1775fd3e | 3729 | struct nfs4_label *label; |
57dc9a57 TM |
3730 | }; |
3731 | ||
3732 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3733 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3734 | { | |
3735 | struct nfs4_createdata *data; | |
3736 | ||
3737 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3738 | if (data != NULL) { | |
3739 | struct nfs_server *server = NFS_SERVER(dir); | |
3740 | ||
14c43f76 DQ |
3741 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3742 | if (IS_ERR(data->label)) | |
3743 | goto out_free; | |
3744 | ||
57dc9a57 TM |
3745 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3746 | data->msg.rpc_argp = &data->arg; | |
3747 | data->msg.rpc_resp = &data->res; | |
3748 | data->arg.dir_fh = NFS_FH(dir); | |
3749 | data->arg.server = server; | |
3750 | data->arg.name = name; | |
3751 | data->arg.attrs = sattr; | |
3752 | data->arg.ftype = ftype; | |
aa9c2669 | 3753 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3754 | data->res.server = server; |
3755 | data->res.fh = &data->fh; | |
3756 | data->res.fattr = &data->fattr; | |
1775fd3e | 3757 | data->res.label = data->label; |
57dc9a57 | 3758 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3759 | } |
3760 | return data; | |
14c43f76 DQ |
3761 | out_free: |
3762 | kfree(data); | |
3763 | return NULL; | |
57dc9a57 TM |
3764 | } |
3765 | ||
3766 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3767 | { | |
7c513058 | 3768 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3769 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3770 | if (status == 0) { |
3771 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3772 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3773 | } |
3774 | return status; | |
3775 | } | |
3776 | ||
3777 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3778 | { | |
14c43f76 | 3779 | nfs4_label_free(data->label); |
57dc9a57 TM |
3780 | kfree(data); |
3781 | } | |
3782 | ||
4f390c15 | 3783 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3784 | struct page *page, unsigned int len, struct iattr *sattr, |
3785 | struct nfs4_label *label) | |
1da177e4 | 3786 | { |
57dc9a57 TM |
3787 | struct nfs4_createdata *data; |
3788 | int status = -ENAMETOOLONG; | |
1da177e4 | 3789 | |
94a6d753 | 3790 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3791 | goto out; |
4f390c15 | 3792 | |
57dc9a57 TM |
3793 | status = -ENOMEM; |
3794 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3795 | if (data == NULL) | |
3796 | goto out; | |
3797 | ||
3798 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3799 | data->arg.u.symlink.pages = &page; | |
3800 | data->arg.u.symlink.len = len; | |
1775fd3e | 3801 | data->arg.label = label; |
1da177e4 | 3802 | |
57dc9a57 TM |
3803 | status = nfs4_do_create(dir, dentry, data); |
3804 | ||
3805 | nfs4_free_createdata(data); | |
3806 | out: | |
1da177e4 LT |
3807 | return status; |
3808 | } | |
3809 | ||
4f390c15 | 3810 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3811 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3812 | { |
3813 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3814 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3815 | int err; |
aa9c2669 DQ |
3816 | |
3817 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3818 | ||
1da177e4 | 3819 | do { |
078ea3df TM |
3820 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3821 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3822 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3823 | &exception); |
3824 | } while (exception.retry); | |
aa9c2669 DQ |
3825 | |
3826 | nfs4_label_release_security(label); | |
1da177e4 LT |
3827 | return err; |
3828 | } | |
3829 | ||
3830 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3831 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3832 | { |
57dc9a57 TM |
3833 | struct nfs4_createdata *data; |
3834 | int status = -ENOMEM; | |
1da177e4 | 3835 | |
57dc9a57 TM |
3836 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3837 | if (data == NULL) | |
3838 | goto out; | |
3839 | ||
1775fd3e | 3840 | data->arg.label = label; |
57dc9a57 TM |
3841 | status = nfs4_do_create(dir, dentry, data); |
3842 | ||
3843 | nfs4_free_createdata(data); | |
3844 | out: | |
1da177e4 LT |
3845 | return status; |
3846 | } | |
3847 | ||
3848 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3849 | struct iattr *sattr) | |
3850 | { | |
3851 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3852 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3853 | int err; |
a8a5da99 | 3854 | |
aa9c2669 DQ |
3855 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3856 | ||
a8a5da99 | 3857 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3858 | do { |
078ea3df TM |
3859 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3860 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3861 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3862 | &exception); |
3863 | } while (exception.retry); | |
aa9c2669 DQ |
3864 | nfs4_label_release_security(label); |
3865 | ||
1da177e4 LT |
3866 | return err; |
3867 | } | |
3868 | ||
3869 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3870 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3871 | { |
3872 | struct inode *dir = dentry->d_inode; | |
3873 | struct nfs4_readdir_arg args = { | |
3874 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3875 | .pages = pages, |
1da177e4 LT |
3876 | .pgbase = 0, |
3877 | .count = count, | |
96d25e53 | 3878 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3879 | .plus = plus, |
1da177e4 LT |
3880 | }; |
3881 | struct nfs4_readdir_res res; | |
3882 | struct rpc_message msg = { | |
3883 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3884 | .rpc_argp = &args, | |
3885 | .rpc_resp = &res, | |
3886 | .rpc_cred = cred, | |
3887 | }; | |
3888 | int status; | |
3889 | ||
6de1472f AV |
3890 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
3891 | dentry, | |
eadf4598 | 3892 | (unsigned long long)cookie); |
c3f52af3 | 3893 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3894 | res.pgbase = args.pgbase; |
7c513058 | 3895 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3896 | if (status >= 0) { |
c3f52af3 | 3897 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3898 | status += args.pgbase; |
3899 | } | |
c4812998 TM |
3900 | |
3901 | nfs_invalidate_atime(dir); | |
3902 | ||
3110ff80 | 3903 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3904 | return status; |
3905 | } | |
3906 | ||
3907 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3908 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3909 | { |
3910 | struct nfs4_exception exception = { }; | |
3911 | int err; | |
3912 | do { | |
c1578b76 TM |
3913 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3914 | pages, count, plus); | |
3915 | trace_nfs4_readdir(dentry->d_inode, err); | |
3916 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3917 | &exception); |
3918 | } while (exception.retry); | |
3919 | return err; | |
3920 | } | |
3921 | ||
3922 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3923 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3924 | { |
57dc9a57 TM |
3925 | struct nfs4_createdata *data; |
3926 | int mode = sattr->ia_mode; | |
3927 | int status = -ENOMEM; | |
1da177e4 | 3928 | |
57dc9a57 TM |
3929 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3930 | if (data == NULL) | |
3931 | goto out; | |
3932 | ||
1da177e4 | 3933 | if (S_ISFIFO(mode)) |
57dc9a57 | 3934 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3935 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3936 | data->arg.ftype = NF4BLK; |
3937 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3938 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3939 | } |
3940 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3941 | data->arg.ftype = NF4CHR; |
3942 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3943 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3944 | } else if (!S_ISSOCK(mode)) { |
3945 | status = -EINVAL; | |
3946 | goto out_free; | |
1da177e4 | 3947 | } |
1775fd3e | 3948 | |
aa9c2669 | 3949 | data->arg.label = label; |
57dc9a57 | 3950 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3951 | out_free: |
57dc9a57 TM |
3952 | nfs4_free_createdata(data); |
3953 | out: | |
1da177e4 LT |
3954 | return status; |
3955 | } | |
3956 | ||
3957 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3958 | struct iattr *sattr, dev_t rdev) | |
3959 | { | |
3960 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3961 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3962 | int err; |
a8a5da99 | 3963 | |
aa9c2669 DQ |
3964 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3965 | ||
a8a5da99 | 3966 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3967 | do { |
078ea3df TM |
3968 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3969 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3970 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3971 | &exception); |
3972 | } while (exception.retry); | |
aa9c2669 DQ |
3973 | |
3974 | nfs4_label_release_security(label); | |
3975 | ||
1da177e4 LT |
3976 | return err; |
3977 | } | |
3978 | ||
3979 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3980 | struct nfs_fsstat *fsstat) | |
3981 | { | |
3982 | struct nfs4_statfs_arg args = { | |
3983 | .fh = fhandle, | |
3984 | .bitmask = server->attr_bitmask, | |
3985 | }; | |
24ad148a BH |
3986 | struct nfs4_statfs_res res = { |
3987 | .fsstat = fsstat, | |
3988 | }; | |
1da177e4 LT |
3989 | struct rpc_message msg = { |
3990 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3991 | .rpc_argp = &args, | |
24ad148a | 3992 | .rpc_resp = &res, |
1da177e4 LT |
3993 | }; |
3994 | ||
0e574af1 | 3995 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3996 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3997 | } |
3998 | ||
3999 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4000 | { | |
4001 | struct nfs4_exception exception = { }; | |
4002 | int err; | |
4003 | do { | |
4004 | err = nfs4_handle_exception(server, | |
4005 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4006 | &exception); | |
4007 | } while (exception.retry); | |
4008 | return err; | |
4009 | } | |
4010 | ||
4011 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4012 | struct nfs_fsinfo *fsinfo) | |
4013 | { | |
4014 | struct nfs4_fsinfo_arg args = { | |
4015 | .fh = fhandle, | |
4016 | .bitmask = server->attr_bitmask, | |
4017 | }; | |
3dda5e43 BH |
4018 | struct nfs4_fsinfo_res res = { |
4019 | .fsinfo = fsinfo, | |
4020 | }; | |
1da177e4 LT |
4021 | struct rpc_message msg = { |
4022 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4023 | .rpc_argp = &args, | |
3dda5e43 | 4024 | .rpc_resp = &res, |
1da177e4 LT |
4025 | }; |
4026 | ||
7c513058 | 4027 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4028 | } |
4029 | ||
4030 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4031 | { | |
4032 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4033 | unsigned long now = jiffies; |
1da177e4 LT |
4034 | int err; |
4035 | ||
4036 | do { | |
83ca7f5a | 4037 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4038 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4039 | if (err == 0) { |
4040 | struct nfs_client *clp = server->nfs_client; | |
4041 | ||
4042 | spin_lock(&clp->cl_lock); | |
4043 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4044 | clp->cl_last_renewal = now; | |
4045 | spin_unlock(&clp->cl_lock); | |
4046 | break; | |
4047 | } | |
4048 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4049 | } while (exception.retry); |
4050 | return err; | |
4051 | } | |
4052 | ||
4053 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4054 | { | |
e38eb650 BS |
4055 | int error; |
4056 | ||
0e574af1 | 4057 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4058 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4059 | if (error == 0) { |
4060 | /* block layout checks this! */ | |
4061 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4062 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4063 | } |
e38eb650 BS |
4064 | |
4065 | return error; | |
1da177e4 LT |
4066 | } |
4067 | ||
4068 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4069 | struct nfs_pathconf *pathconf) | |
4070 | { | |
4071 | struct nfs4_pathconf_arg args = { | |
4072 | .fh = fhandle, | |
4073 | .bitmask = server->attr_bitmask, | |
4074 | }; | |
d45b2989 BH |
4075 | struct nfs4_pathconf_res res = { |
4076 | .pathconf = pathconf, | |
4077 | }; | |
1da177e4 LT |
4078 | struct rpc_message msg = { |
4079 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4080 | .rpc_argp = &args, | |
d45b2989 | 4081 | .rpc_resp = &res, |
1da177e4 LT |
4082 | }; |
4083 | ||
4084 | /* None of the pathconf attributes are mandatory to implement */ | |
4085 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4086 | memset(pathconf, 0, sizeof(*pathconf)); | |
4087 | return 0; | |
4088 | } | |
4089 | ||
0e574af1 | 4090 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4091 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4092 | } |
4093 | ||
4094 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4095 | struct nfs_pathconf *pathconf) | |
4096 | { | |
4097 | struct nfs4_exception exception = { }; | |
4098 | int err; | |
4099 | ||
4100 | do { | |
4101 | err = nfs4_handle_exception(server, | |
4102 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4103 | &exception); | |
4104 | } while (exception.retry); | |
4105 | return err; | |
4106 | } | |
4107 | ||
5521abfd | 4108 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4109 | const struct nfs_open_context *ctx, |
4110 | const struct nfs_lock_context *l_ctx, | |
4111 | fmode_t fmode) | |
4112 | { | |
4113 | const struct nfs_lockowner *lockowner = NULL; | |
4114 | ||
4115 | if (l_ctx != NULL) | |
4116 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4117 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4118 | } |
4119 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4120 | ||
5521abfd TM |
4121 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4122 | const struct nfs_open_context *ctx, | |
4123 | const struct nfs_lock_context *l_ctx, | |
4124 | fmode_t fmode) | |
4125 | { | |
4126 | nfs4_stateid current_stateid; | |
4127 | ||
e1253be0 TM |
4128 | /* If the current stateid represents a lost lock, then exit */ |
4129 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4130 | return true; | |
5521abfd TM |
4131 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4132 | } | |
4133 | ||
4134 | static bool nfs4_error_stateid_expired(int err) | |
4135 | { | |
4136 | switch (err) { | |
4137 | case -NFS4ERR_DELEG_REVOKED: | |
4138 | case -NFS4ERR_ADMIN_REVOKED: | |
4139 | case -NFS4ERR_BAD_STATEID: | |
4140 | case -NFS4ERR_STALE_STATEID: | |
4141 | case -NFS4ERR_OLD_STATEID: | |
4142 | case -NFS4ERR_OPENMODE: | |
4143 | case -NFS4ERR_EXPIRED: | |
4144 | return true; | |
4145 | } | |
4146 | return false; | |
4147 | } | |
4148 | ||
d45f60c6 | 4149 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4150 | { |
d45f60c6 | 4151 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4152 | } |
4153 | ||
d45f60c6 | 4154 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4155 | { |
d45f60c6 | 4156 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4157 | |
d45f60c6 WAA |
4158 | trace_nfs4_read(hdr, task->tk_status); |
4159 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4160 | hdr->args.context->state, |
4161 | NULL) == -EAGAIN) { | |
d00c5d43 | 4162 | rpc_restart_call_prepare(task); |
ec06c096 | 4163 | return -EAGAIN; |
1da177e4 | 4164 | } |
8850df99 | 4165 | |
d45f60c6 | 4166 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4167 | if (task->tk_status > 0) |
d45f60c6 | 4168 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4169 | return 0; |
1da177e4 LT |
4170 | } |
4171 | ||
5521abfd | 4172 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4173 | struct nfs_pgio_args *args) |
5521abfd TM |
4174 | { |
4175 | ||
4176 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4177 | nfs4_stateid_is_current(&args->stateid, | |
4178 | args->context, | |
4179 | args->lock_context, | |
4180 | FMODE_READ)) | |
4181 | return false; | |
4182 | rpc_restart_call_prepare(task); | |
4183 | return true; | |
4184 | } | |
4185 | ||
d45f60c6 | 4186 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4187 | { |
4188 | ||
4189 | dprintk("--> %s\n", __func__); | |
4190 | ||
d45f60c6 | 4191 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4192 | return -EAGAIN; |
d45f60c6 | 4193 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4194 | return -EAGAIN; |
d45f60c6 WAA |
4195 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4196 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4197 | } |
4198 | ||
d45f60c6 WAA |
4199 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4200 | struct rpc_message *msg) | |
1da177e4 | 4201 | { |
d45f60c6 WAA |
4202 | hdr->timestamp = jiffies; |
4203 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4204 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4205 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4206 | } |
4207 | ||
d45f60c6 WAA |
4208 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4209 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4210 | { |
d45f60c6 WAA |
4211 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4212 | &hdr->args.seq_args, | |
4213 | &hdr->res.seq_res, | |
9b206149 | 4214 | task)) |
ef1820f9 | 4215 | return 0; |
d45f60c6 WAA |
4216 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4217 | hdr->args.lock_context, | |
4218 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4219 | return -EIO; |
d45f60c6 | 4220 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4221 | return -EIO; |
4222 | return 0; | |
1da177e4 LT |
4223 | } |
4224 | ||
d45f60c6 WAA |
4225 | static int nfs4_write_done_cb(struct rpc_task *task, |
4226 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4227 | { |
d45f60c6 | 4228 | struct inode *inode = hdr->inode; |
8478eaa1 | 4229 | |
d45f60c6 WAA |
4230 | trace_nfs4_write(hdr, task->tk_status); |
4231 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4232 | hdr->args.context->state, |
4233 | NULL) == -EAGAIN) { | |
d00c5d43 | 4234 | rpc_restart_call_prepare(task); |
788e7a89 | 4235 | return -EAGAIN; |
1da177e4 | 4236 | } |
4f9838c7 | 4237 | if (task->tk_status >= 0) { |
d45f60c6 WAA |
4238 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
4239 | nfs_post_op_update_inode_force_wcc(inode, &hdr->fattr); | |
4f9838c7 | 4240 | } |
788e7a89 | 4241 | return 0; |
1da177e4 LT |
4242 | } |
4243 | ||
5521abfd | 4244 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4245 | struct nfs_pgio_args *args) |
5521abfd TM |
4246 | { |
4247 | ||
4248 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4249 | nfs4_stateid_is_current(&args->stateid, | |
4250 | args->context, | |
4251 | args->lock_context, | |
4252 | FMODE_WRITE)) | |
4253 | return false; | |
4254 | rpc_restart_call_prepare(task); | |
4255 | return true; | |
4256 | } | |
4257 | ||
d45f60c6 | 4258 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4259 | { |
d45f60c6 | 4260 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4261 | return -EAGAIN; |
d45f60c6 | 4262 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4263 | return -EAGAIN; |
d45f60c6 WAA |
4264 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4265 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4266 | } |
4267 | ||
5a37f851 | 4268 | static |
d45f60c6 | 4269 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4270 | { |
5a37f851 | 4271 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4272 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4273 | return false; |
4274 | /* Otherwise, request attributes if and only if we don't hold | |
4275 | * a delegation | |
4276 | */ | |
011e2a7f | 4277 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4278 | } |
a69aef14 | 4279 | |
d45f60c6 WAA |
4280 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4281 | struct rpc_message *msg) | |
1da177e4 | 4282 | { |
d45f60c6 | 4283 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4284 | |
d45f60c6 WAA |
4285 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4286 | hdr->args.bitmask = NULL; | |
4287 | hdr->res.fattr = NULL; | |
7ffd1064 | 4288 | } else |
d45f60c6 | 4289 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4290 | |
d45f60c6 WAA |
4291 | if (!hdr->pgio_done_cb) |
4292 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4293 | hdr->res.server = server; | |
4294 | hdr->timestamp = jiffies; | |
1da177e4 | 4295 | |
bdc7f021 | 4296 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4297 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4298 | } |
4299 | ||
0b7c0153 | 4300 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4301 | { |
d9afbd1b TM |
4302 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4303 | &data->args.seq_args, | |
4304 | &data->res.seq_res, | |
4305 | task); | |
1da177e4 LT |
4306 | } |
4307 | ||
0b7c0153 | 4308 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4309 | { |
1da177e4 | 4310 | struct inode *inode = data->inode; |
14516c3a | 4311 | |
cc668ab3 | 4312 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4313 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4314 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4315 | rpc_restart_call_prepare(task); |
788e7a89 | 4316 | return -EAGAIN; |
1da177e4 | 4317 | } |
788e7a89 | 4318 | return 0; |
1da177e4 LT |
4319 | } |
4320 | ||
0b7c0153 | 4321 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4322 | { |
4323 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4324 | return -EAGAIN; | |
0b7c0153 | 4325 | return data->commit_done_cb(task, data); |
5f452431 FI |
4326 | } |
4327 | ||
0b7c0153 | 4328 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4329 | { |
788e7a89 | 4330 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4331 | |
0b7c0153 FI |
4332 | if (data->commit_done_cb == NULL) |
4333 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4334 | data->res.server = server; |
bdc7f021 | 4335 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4336 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4337 | } |
4338 | ||
9bc4e3ca CL |
4339 | struct nfs4_renewdata { |
4340 | struct nfs_client *client; | |
4341 | unsigned long timestamp; | |
4342 | }; | |
4343 | ||
1da177e4 LT |
4344 | /* |
4345 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4346 | * standalone procedure for queueing an asynchronous RENEW. | |
4347 | */ | |
9bc4e3ca | 4348 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4349 | { |
9bc4e3ca CL |
4350 | struct nfs4_renewdata *data = calldata; |
4351 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4352 | |
0851de06 AB |
4353 | if (atomic_read(&clp->cl_count) > 1) |
4354 | nfs4_schedule_state_renewal(clp); | |
4355 | nfs_put_client(clp); | |
9bc4e3ca | 4356 | kfree(data); |
dc96aef9 AB |
4357 | } |
4358 | ||
9bc4e3ca | 4359 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4360 | { |
9bc4e3ca CL |
4361 | struct nfs4_renewdata *data = calldata; |
4362 | struct nfs_client *clp = data->client; | |
4363 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4364 | |
c6d01c6f | 4365 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4366 | switch (task->tk_status) { |
4367 | case 0: | |
4368 | break; | |
4369 | case -NFS4ERR_LEASE_MOVED: | |
4370 | nfs4_schedule_lease_moved_recovery(clp); | |
4371 | break; | |
4372 | default: | |
95baa25c | 4373 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4374 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4375 | return; | |
4376 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4377 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4378 | return; |
4379 | } | |
4380 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4381 | } |
452e9352 | 4382 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4383 | } |
4384 | ||
963d8fe5 TM |
4385 | static const struct rpc_call_ops nfs4_renew_ops = { |
4386 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4387 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4388 | }; |
4389 | ||
2f60ea6b | 4390 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4391 | { |
4392 | struct rpc_message msg = { | |
4393 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4394 | .rpc_argp = clp, | |
b4454fe1 | 4395 | .rpc_cred = cred, |
1da177e4 | 4396 | }; |
9bc4e3ca | 4397 | struct nfs4_renewdata *data; |
1da177e4 | 4398 | |
2f60ea6b TM |
4399 | if (renew_flags == 0) |
4400 | return 0; | |
0851de06 AB |
4401 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4402 | return -EIO; | |
b569ad34 | 4403 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4404 | if (data == NULL) |
4405 | return -ENOMEM; | |
4406 | data->client = clp; | |
4407 | data->timestamp = jiffies; | |
bc7a05ca | 4408 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4409 | &nfs4_renew_ops, data); |
1da177e4 LT |
4410 | } |
4411 | ||
8534d4ec | 4412 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4413 | { |
4414 | struct rpc_message msg = { | |
4415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4416 | .rpc_argp = clp, | |
b4454fe1 | 4417 | .rpc_cred = cred, |
1da177e4 LT |
4418 | }; |
4419 | unsigned long now = jiffies; | |
4420 | int status; | |
4421 | ||
bc7a05ca | 4422 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4423 | if (status < 0) |
4424 | return status; | |
452e9352 | 4425 | do_renew_lease(clp, now); |
1da177e4 LT |
4426 | return 0; |
4427 | } | |
4428 | ||
aa1870af BF |
4429 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4430 | { | |
7dd7d959 | 4431 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4432 | } |
4433 | ||
21f498c2 TM |
4434 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4435 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4436 | * the stack. |
4437 | */ | |
21f498c2 | 4438 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4439 | |
e9e3d724 NH |
4440 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4441 | struct page **pages, unsigned int *pgbase) | |
4442 | { | |
4443 | struct page *newpage, **spages; | |
4444 | int rc = 0; | |
4445 | size_t len; | |
4446 | spages = pages; | |
4447 | ||
4448 | do { | |
21f498c2 | 4449 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4450 | newpage = alloc_page(GFP_KERNEL); |
4451 | ||
4452 | if (newpage == NULL) | |
4453 | goto unwind; | |
4454 | memcpy(page_address(newpage), buf, len); | |
4455 | buf += len; | |
4456 | buflen -= len; | |
4457 | *pages++ = newpage; | |
4458 | rc++; | |
4459 | } while (buflen != 0); | |
4460 | ||
4461 | return rc; | |
4462 | ||
4463 | unwind: | |
4464 | for(; rc > 0; rc--) | |
4465 | __free_page(spages[rc-1]); | |
4466 | return -ENOMEM; | |
4467 | } | |
4468 | ||
e50a1c2e BF |
4469 | struct nfs4_cached_acl { |
4470 | int cached; | |
4471 | size_t len; | |
3e9d4154 | 4472 | char data[0]; |
e50a1c2e BF |
4473 | }; |
4474 | ||
4475 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4476 | { | |
4477 | struct nfs_inode *nfsi = NFS_I(inode); | |
4478 | ||
4479 | spin_lock(&inode->i_lock); | |
4480 | kfree(nfsi->nfs4_acl); | |
4481 | nfsi->nfs4_acl = acl; | |
4482 | spin_unlock(&inode->i_lock); | |
4483 | } | |
4484 | ||
4485 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4486 | { | |
4487 | nfs4_set_cached_acl(inode, NULL); | |
4488 | } | |
4489 | ||
4490 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4491 | { | |
4492 | struct nfs_inode *nfsi = NFS_I(inode); | |
4493 | struct nfs4_cached_acl *acl; | |
4494 | int ret = -ENOENT; | |
4495 | ||
4496 | spin_lock(&inode->i_lock); | |
4497 | acl = nfsi->nfs4_acl; | |
4498 | if (acl == NULL) | |
4499 | goto out; | |
4500 | if (buf == NULL) /* user is just asking for length */ | |
4501 | goto out_len; | |
4502 | if (acl->cached == 0) | |
4503 | goto out; | |
4504 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4505 | if (acl->len > buflen) | |
4506 | goto out; | |
4507 | memcpy(buf, acl->data, acl->len); | |
4508 | out_len: | |
4509 | ret = acl->len; | |
4510 | out: | |
4511 | spin_unlock(&inode->i_lock); | |
4512 | return ret; | |
4513 | } | |
4514 | ||
5794d21e | 4515 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4516 | { |
4517 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4518 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4519 | |
1f1ea6c2 | 4520 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4521 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4522 | if (acl == NULL) |
4523 | goto out; | |
4524 | acl->cached = 1; | |
5794d21e | 4525 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4526 | } else { |
4527 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4528 | if (acl == NULL) | |
4529 | goto out; | |
4530 | acl->cached = 0; | |
4531 | } | |
4532 | acl->len = acl_len; | |
4533 | out: | |
4534 | nfs4_set_cached_acl(inode, acl); | |
4535 | } | |
4536 | ||
bf118a34 AA |
4537 | /* |
4538 | * The getxattr API returns the required buffer length when called with a | |
4539 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4540 | * the required buf. On a NULL buf, we send a page of data to the server | |
4541 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4542 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4543 | * the cache. If not so, we throw away the page, and cache the required | |
4544 | * length. The next getxattr call will then produce another round trip to | |
4545 | * the server, this time with the input buf of the required size. | |
4546 | */ | |
16b4289c | 4547 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4548 | { |
bf118a34 | 4549 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4550 | struct nfs_getaclargs args = { |
4551 | .fh = NFS_FH(inode), | |
4552 | .acl_pages = pages, | |
4553 | .acl_len = buflen, | |
4554 | }; | |
663c79b3 BH |
4555 | struct nfs_getaclres res = { |
4556 | .acl_len = buflen, | |
4557 | }; | |
aa1870af BF |
4558 | struct rpc_message msg = { |
4559 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4560 | .rpc_argp = &args, | |
663c79b3 | 4561 | .rpc_resp = &res, |
aa1870af | 4562 | }; |
21f498c2 TM |
4563 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4564 | int ret = -ENOMEM, i; | |
aa1870af | 4565 | |
bf118a34 AA |
4566 | /* As long as we're doing a round trip to the server anyway, |
4567 | * let's be prepared for a page of acl data. */ | |
4568 | if (npages == 0) | |
4569 | npages = 1; | |
21f498c2 TM |
4570 | if (npages > ARRAY_SIZE(pages)) |
4571 | return -ERANGE; | |
5a006899 | 4572 | |
bf118a34 AA |
4573 | for (i = 0; i < npages; i++) { |
4574 | pages[i] = alloc_page(GFP_KERNEL); | |
4575 | if (!pages[i]) | |
4576 | goto out_free; | |
e50a1c2e | 4577 | } |
5a006899 SP |
4578 | |
4579 | /* for decoding across pages */ | |
4580 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4581 | if (!res.acl_scratch) | |
4582 | goto out_free; | |
4583 | ||
bf118a34 AA |
4584 | args.acl_len = npages * PAGE_SIZE; |
4585 | args.acl_pgbase = 0; | |
5a006899 | 4586 | |
de040bec | 4587 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4588 | __func__, buf, buflen, npages, args.acl_len); |
4589 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4590 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4591 | if (ret) |
4592 | goto out_free; | |
bf118a34 | 4593 | |
1f1ea6c2 TM |
4594 | /* Handle the case where the passed-in buffer is too short */ |
4595 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4596 | /* Did the user only issue a request for the acl length? */ | |
4597 | if (buf == NULL) | |
4598 | goto out_ok; | |
e50a1c2e | 4599 | ret = -ERANGE; |
1f1ea6c2 | 4600 | goto out_free; |
e50a1c2e | 4601 | } |
1f1ea6c2 | 4602 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4603 | if (buf) { |
4604 | if (res.acl_len > buflen) { | |
4605 | ret = -ERANGE; | |
4606 | goto out_free; | |
4607 | } | |
1f1ea6c2 | 4608 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4609 | } |
1f1ea6c2 TM |
4610 | out_ok: |
4611 | ret = res.acl_len; | |
e50a1c2e | 4612 | out_free: |
bf118a34 AA |
4613 | for (i = 0; i < npages; i++) |
4614 | if (pages[i]) | |
4615 | __free_page(pages[i]); | |
331818f1 TM |
4616 | if (res.acl_scratch) |
4617 | __free_page(res.acl_scratch); | |
aa1870af BF |
4618 | return ret; |
4619 | } | |
4620 | ||
16b4289c TM |
4621 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4622 | { | |
4623 | struct nfs4_exception exception = { }; | |
4624 | ssize_t ret; | |
4625 | do { | |
4626 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4627 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4628 | if (ret >= 0) |
4629 | break; | |
4630 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4631 | } while (exception.retry); | |
4632 | return ret; | |
4633 | } | |
4634 | ||
e50a1c2e BF |
4635 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4636 | { | |
4637 | struct nfs_server *server = NFS_SERVER(inode); | |
4638 | int ret; | |
4639 | ||
4640 | if (!nfs4_server_supports_acls(server)) | |
4641 | return -EOPNOTSUPP; | |
4642 | ret = nfs_revalidate_inode(server, inode); | |
4643 | if (ret < 0) | |
4644 | return ret; | |
08a22b39 AK |
4645 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4646 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4647 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4648 | if (ret != -ENOENT) | |
bf118a34 AA |
4649 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4650 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4651 | return ret; |
4652 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4653 | } | |
4654 | ||
16b4289c | 4655 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4656 | { |
4657 | struct nfs_server *server = NFS_SERVER(inode); | |
4658 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4659 | struct nfs_setaclargs arg = { | |
4660 | .fh = NFS_FH(inode), | |
4661 | .acl_pages = pages, | |
4662 | .acl_len = buflen, | |
4663 | }; | |
73c403a9 | 4664 | struct nfs_setaclres res; |
4b580ee3 BF |
4665 | struct rpc_message msg = { |
4666 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4667 | .rpc_argp = &arg, | |
73c403a9 | 4668 | .rpc_resp = &res, |
4b580ee3 | 4669 | }; |
21f498c2 | 4670 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4671 | int ret, i; |
4b580ee3 BF |
4672 | |
4673 | if (!nfs4_server_supports_acls(server)) | |
4674 | return -EOPNOTSUPP; | |
21f498c2 TM |
4675 | if (npages > ARRAY_SIZE(pages)) |
4676 | return -ERANGE; | |
e9e3d724 NH |
4677 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4678 | if (i < 0) | |
4679 | return i; | |
57ec14c5 | 4680 | nfs4_inode_return_delegation(inode); |
7c513058 | 4681 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4682 | |
4683 | /* | |
4684 | * Free each page after tx, so the only ref left is | |
4685 | * held by the network stack | |
4686 | */ | |
4687 | for (; i > 0; i--) | |
4688 | put_page(pages[i-1]); | |
4689 | ||
08a22b39 AK |
4690 | /* |
4691 | * Acl update can result in inode attribute update. | |
4692 | * so mark the attribute cache invalid. | |
4693 | */ | |
4694 | spin_lock(&inode->i_lock); | |
4695 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4696 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4697 | nfs_access_zap_cache(inode); |
4698 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4699 | return ret; |
4700 | } | |
4701 | ||
16b4289c TM |
4702 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4703 | { | |
4704 | struct nfs4_exception exception = { }; | |
4705 | int err; | |
4706 | do { | |
c1578b76 TM |
4707 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4708 | trace_nfs4_set_acl(inode, err); | |
4709 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4710 | &exception); |
4711 | } while (exception.retry); | |
4712 | return err; | |
4713 | } | |
4714 | ||
aa9c2669 DQ |
4715 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4716 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4717 | size_t buflen) | |
4718 | { | |
4719 | struct nfs_server *server = NFS_SERVER(inode); | |
4720 | struct nfs_fattr fattr; | |
4721 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4722 | ||
4723 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4724 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4725 | .fh = NFS_FH(inode), |
4726 | .bitmask = bitmask, | |
4727 | }; | |
4728 | struct nfs4_getattr_res res = { | |
4729 | .fattr = &fattr, | |
4730 | .label = &label, | |
4731 | .server = server, | |
4732 | }; | |
4733 | struct rpc_message msg = { | |
4734 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4735 | .rpc_argp = &arg, |
aa9c2669 DQ |
4736 | .rpc_resp = &res, |
4737 | }; | |
4738 | int ret; | |
4739 | ||
4740 | nfs_fattr_init(&fattr); | |
4741 | ||
fcb63a9b | 4742 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4743 | if (ret) |
4744 | return ret; | |
4745 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4746 | return -ENOENT; | |
4747 | if (buflen < label.len) | |
4748 | return -ERANGE; | |
4749 | return 0; | |
4750 | } | |
4751 | ||
4752 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4753 | size_t buflen) | |
4754 | { | |
4755 | struct nfs4_exception exception = { }; | |
4756 | int err; | |
4757 | ||
4758 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4759 | return -EOPNOTSUPP; | |
4760 | ||
4761 | do { | |
c1578b76 TM |
4762 | err = _nfs4_get_security_label(inode, buf, buflen); |
4763 | trace_nfs4_get_security_label(inode, err); | |
4764 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4765 | &exception); |
4766 | } while (exception.retry); | |
4767 | return err; | |
4768 | } | |
4769 | ||
4770 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4771 | struct nfs4_label *ilabel, | |
4772 | struct nfs_fattr *fattr, | |
4773 | struct nfs4_label *olabel) | |
4774 | { | |
4775 | ||
4776 | struct iattr sattr = {0}; | |
4777 | struct nfs_server *server = NFS_SERVER(inode); | |
4778 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4779 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4780 | .fh = NFS_FH(inode), |
4781 | .iap = &sattr, | |
4782 | .server = server, | |
4783 | .bitmask = bitmask, | |
4784 | .label = ilabel, | |
4785 | }; | |
4786 | struct nfs_setattrres res = { | |
4787 | .fattr = fattr, | |
4788 | .label = olabel, | |
4789 | .server = server, | |
4790 | }; | |
4791 | struct rpc_message msg = { | |
4792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4793 | .rpc_argp = &arg, |
aa9c2669 DQ |
4794 | .rpc_resp = &res, |
4795 | }; | |
4796 | int status; | |
4797 | ||
12207f69 | 4798 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4799 | |
12207f69 | 4800 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4801 | if (status) |
4802 | dprintk("%s failed: %d\n", __func__, status); | |
4803 | ||
4804 | return status; | |
4805 | } | |
4806 | ||
4807 | static int nfs4_do_set_security_label(struct inode *inode, | |
4808 | struct nfs4_label *ilabel, | |
4809 | struct nfs_fattr *fattr, | |
4810 | struct nfs4_label *olabel) | |
4811 | { | |
4812 | struct nfs4_exception exception = { }; | |
4813 | int err; | |
4814 | ||
4815 | do { | |
c1578b76 TM |
4816 | err = _nfs4_do_set_security_label(inode, ilabel, |
4817 | fattr, olabel); | |
4818 | trace_nfs4_set_security_label(inode, err); | |
4819 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4820 | &exception); |
4821 | } while (exception.retry); | |
4822 | return err; | |
4823 | } | |
4824 | ||
4825 | static int | |
4826 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4827 | { | |
4828 | struct nfs4_label ilabel, *olabel = NULL; | |
4829 | struct nfs_fattr fattr; | |
4830 | struct rpc_cred *cred; | |
4831 | struct inode *inode = dentry->d_inode; | |
4832 | int status; | |
4833 | ||
4834 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4835 | return -EOPNOTSUPP; | |
4836 | ||
4837 | nfs_fattr_init(&fattr); | |
4838 | ||
4839 | ilabel.pi = 0; | |
4840 | ilabel.lfs = 0; | |
4841 | ilabel.label = (char *)buf; | |
4842 | ilabel.len = buflen; | |
4843 | ||
4844 | cred = rpc_lookup_cred(); | |
4845 | if (IS_ERR(cred)) | |
4846 | return PTR_ERR(cred); | |
4847 | ||
4848 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4849 | if (IS_ERR(olabel)) { | |
4850 | status = -PTR_ERR(olabel); | |
4851 | goto out; | |
4852 | } | |
4853 | ||
4854 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4855 | if (status == 0) | |
4856 | nfs_setsecurity(inode, &fattr, olabel); | |
4857 | ||
4858 | nfs4_label_free(olabel); | |
4859 | out: | |
4860 | put_rpccred(cred); | |
4861 | return status; | |
4862 | } | |
4863 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4864 | ||
4865 | ||
1da177e4 | 4866 | static int |
8478eaa1 N |
4867 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, |
4868 | struct nfs4_state *state, long *timeout) | |
1da177e4 | 4869 | { |
aa5190d0 TM |
4870 | struct nfs_client *clp = server->nfs_client; |
4871 | ||
4872 | if (task->tk_status >= 0) | |
1da177e4 LT |
4873 | return 0; |
4874 | switch(task->tk_status) { | |
a1d0b5ee | 4875 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4876 | case -NFS4ERR_ADMIN_REVOKED: |
4877 | case -NFS4ERR_BAD_STATEID: | |
4878 | case -NFS4ERR_OPENMODE: | |
4879 | if (state == NULL) | |
4880 | break; | |
5d422301 | 4881 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4882 | goto recovery_failed; |
0400a6b0 | 4883 | goto wait_on_recovery; |
0ced63d1 | 4884 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4885 | if (state != NULL) { |
4886 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 4887 | goto recovery_failed; |
5d422301 | 4888 | } |
1da177e4 | 4889 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4890 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4891 | nfs4_schedule_lease_recovery(clp); |
4892 | goto wait_on_recovery; | |
519ae255 CL |
4893 | case -NFS4ERR_MOVED: |
4894 | if (nfs4_schedule_migration_recovery(server) < 0) | |
4895 | goto recovery_failed; | |
4896 | goto wait_on_recovery; | |
8ef2f8d4 CL |
4897 | case -NFS4ERR_LEASE_MOVED: |
4898 | nfs4_schedule_lease_moved_recovery(clp); | |
4899 | goto wait_on_recovery; | |
4745e315 AA |
4900 | #if defined(CONFIG_NFS_V4_1) |
4901 | case -NFS4ERR_BADSESSION: | |
4902 | case -NFS4ERR_BADSLOT: | |
4903 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4904 | case -NFS4ERR_DEADSESSION: | |
4905 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4906 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4907 | case -NFS4ERR_SEQ_MISORDERED: | |
4908 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4909 | task->tk_status); | |
9f594791 | 4910 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 4911 | goto wait_on_recovery; |
4745e315 | 4912 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4913 | case -NFS4ERR_DELAY: |
aa5190d0 | 4914 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
8478eaa1 N |
4915 | rpc_delay(task, nfs4_update_delay(timeout)); |
4916 | goto restart_call; | |
006ea73e | 4917 | case -NFS4ERR_GRACE: |
1da177e4 | 4918 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 4919 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 4920 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 4921 | goto restart_call; |
1da177e4 LT |
4922 | } |
4923 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4924 | return 0; | |
9f51a78e | 4925 | recovery_failed: |
5d422301 TM |
4926 | task->tk_status = -EIO; |
4927 | return 0; | |
0400a6b0 | 4928 | wait_on_recovery: |
a2c0b9e2 | 4929 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4930 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4931 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
4932 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
4933 | goto recovery_failed; | |
f1478c13 | 4934 | restart_call: |
a2c0b9e2 TM |
4935 | task->tk_status = 0; |
4936 | return -EAGAIN; | |
1da177e4 LT |
4937 | } |
4938 | ||
f092075d CL |
4939 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4940 | nfs4_verifier *bootverf) | |
cd93710e CL |
4941 | { |
4942 | __be32 verf[2]; | |
4943 | ||
2c820d9a CL |
4944 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4945 | /* An impossible timestamp guarantees this value | |
4946 | * will never match a generated boot time. */ | |
4947 | verf[0] = 0; | |
17f26b12 | 4948 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4949 | } else { |
f092075d | 4950 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4951 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4952 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4953 | } |
cd93710e CL |
4954 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4955 | } | |
4956 | ||
e984a55a | 4957 | static unsigned int |
ceb3a16c | 4958 | nfs4_init_nonuniform_client_string(struct nfs_client *clp, |
e984a55a CL |
4959 | char *buf, size_t len) |
4960 | { | |
4961 | unsigned int result; | |
4962 | ||
ceb3a16c TM |
4963 | if (clp->cl_owner_id != NULL) |
4964 | return strlcpy(buf, clp->cl_owner_id, len); | |
4965 | ||
e984a55a CL |
4966 | rcu_read_lock(); |
4967 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4968 | clp->cl_ipaddr, | |
4969 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4970 | RPC_DISPLAY_ADDR), | |
4971 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4972 | RPC_DISPLAY_PROTO)); | |
4973 | rcu_read_unlock(); | |
ceb3a16c | 4974 | clp->cl_owner_id = kstrdup(buf, GFP_KERNEL); |
e984a55a CL |
4975 | return result; |
4976 | } | |
4977 | ||
4978 | static unsigned int | |
ceb3a16c | 4979 | nfs4_init_uniform_client_string(struct nfs_client *clp, |
e984a55a CL |
4980 | char *buf, size_t len) |
4981 | { | |
55b59293 | 4982 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
ceb3a16c TM |
4983 | unsigned int result; |
4984 | ||
4985 | if (clp->cl_owner_id != NULL) | |
4986 | return strlcpy(buf, clp->cl_owner_id, len); | |
6f2ea7f2 CL |
4987 | |
4988 | if (nfs4_client_id_uniquifier[0] != '\0') | |
ceb3a16c | 4989 | result = scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
55b59293 TM |
4990 | clp->rpc_ops->version, |
4991 | clp->cl_minorversion, | |
4992 | nfs4_client_id_uniquifier, | |
4993 | nodename); | |
ceb3a16c TM |
4994 | else |
4995 | result = scnprintf(buf, len, "Linux NFSv%u.%u %s", | |
e984a55a | 4996 | clp->rpc_ops->version, clp->cl_minorversion, |
6f2ea7f2 | 4997 | nodename); |
ceb3a16c TM |
4998 | clp->cl_owner_id = kstrdup(buf, GFP_KERNEL); |
4999 | return result; | |
e984a55a CL |
5000 | } |
5001 | ||
706cb8db CL |
5002 | /* |
5003 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5004 | * services. Advertise one based on the address family of the | |
5005 | * clientaddr. | |
5006 | */ | |
5007 | static unsigned int | |
5008 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5009 | { | |
5010 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5011 | return scnprintf(buf, len, "tcp6"); | |
5012 | else | |
5013 | return scnprintf(buf, len, "tcp"); | |
5014 | } | |
5015 | ||
f11b2a1c JL |
5016 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5017 | { | |
5018 | struct nfs4_setclientid *sc = calldata; | |
5019 | ||
5020 | if (task->tk_status == 0) | |
5021 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5022 | } | |
5023 | ||
5024 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5025 | .rpc_call_done = nfs4_setclientid_done, | |
5026 | }; | |
5027 | ||
6bbb4ae8 CL |
5028 | /** |
5029 | * nfs4_proc_setclientid - Negotiate client ID | |
5030 | * @clp: state data structure | |
5031 | * @program: RPC program for NFSv4 callback service | |
5032 | * @port: IP port number for NFS4 callback service | |
5033 | * @cred: RPC credential to use for this call | |
5034 | * @res: where to place the result | |
5035 | * | |
5036 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5037 | */ | |
bb8b27e5 TM |
5038 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5039 | unsigned short port, struct rpc_cred *cred, | |
5040 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5041 | { |
5042 | nfs4_verifier sc_verifier; | |
5043 | struct nfs4_setclientid setclientid = { | |
5044 | .sc_verifier = &sc_verifier, | |
5045 | .sc_prog = program, | |
f4eecd5d | 5046 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
5047 | }; |
5048 | struct rpc_message msg = { | |
5049 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5050 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5051 | .rpc_resp = res, |
286d7d6a | 5052 | .rpc_cred = cred, |
1da177e4 | 5053 | }; |
f11b2a1c JL |
5054 | struct rpc_task *task; |
5055 | struct rpc_task_setup task_setup_data = { | |
5056 | .rpc_client = clp->cl_rpcclient, | |
5057 | .rpc_message = &msg, | |
5058 | .callback_ops = &nfs4_setclientid_ops, | |
5059 | .callback_data = &setclientid, | |
5060 | .flags = RPC_TASK_TIMEOUT, | |
5061 | }; | |
6bbb4ae8 | 5062 | int status; |
1da177e4 | 5063 | |
de734831 | 5064 | /* nfs_client_id4 */ |
f092075d | 5065 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
5066 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
5067 | setclientid.sc_name_len = | |
5068 | nfs4_init_uniform_client_string(clp, | |
5069 | setclientid.sc_name, | |
5070 | sizeof(setclientid.sc_name)); | |
5071 | else | |
5072 | setclientid.sc_name_len = | |
5073 | nfs4_init_nonuniform_client_string(clp, | |
5074 | setclientid.sc_name, | |
5075 | sizeof(setclientid.sc_name)); | |
de734831 | 5076 | /* cb_client4 */ |
706cb8db CL |
5077 | setclientid.sc_netid_len = |
5078 | nfs4_init_callback_netid(clp, | |
5079 | setclientid.sc_netid, | |
5080 | sizeof(setclientid.sc_netid)); | |
de734831 | 5081 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5082 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5083 | clp->cl_ipaddr, port >> 8, port & 255); |
5084 | ||
6bbb4ae8 CL |
5085 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
5086 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5087 | setclientid.sc_name_len, setclientid.sc_name); | |
f11b2a1c JL |
5088 | task = rpc_run_task(&task_setup_data); |
5089 | if (IS_ERR(task)) { | |
5090 | status = PTR_ERR(task); | |
5091 | goto out; | |
5092 | } | |
5093 | status = task->tk_status; | |
5094 | if (setclientid.sc_cred) { | |
5095 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5096 | put_rpccred(setclientid.sc_cred); | |
5097 | } | |
5098 | rpc_put_task(task); | |
5099 | out: | |
c6d01c6f | 5100 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5101 | dprintk("NFS reply setclientid: %d\n", status); |
5102 | return status; | |
1da177e4 LT |
5103 | } |
5104 | ||
6bbb4ae8 CL |
5105 | /** |
5106 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5107 | * @clp: state data structure | |
5108 | * @res: result of a previous SETCLIENTID | |
5109 | * @cred: RPC credential to use for this call | |
5110 | * | |
5111 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5112 | */ | |
fd954ae1 | 5113 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5114 | struct nfs4_setclientid_res *arg, |
5115 | struct rpc_cred *cred) | |
1da177e4 | 5116 | { |
1da177e4 LT |
5117 | struct rpc_message msg = { |
5118 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5119 | .rpc_argp = arg, |
286d7d6a | 5120 | .rpc_cred = cred, |
1da177e4 | 5121 | }; |
1da177e4 LT |
5122 | int status; |
5123 | ||
6bbb4ae8 CL |
5124 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5125 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5126 | clp->cl_clientid); | |
1bd714f2 | 5127 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5128 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5129 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5130 | return status; |
5131 | } | |
5132 | ||
fe650407 TM |
5133 | struct nfs4_delegreturndata { |
5134 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5135 | struct nfs4_delegreturnres res; |
fe650407 TM |
5136 | struct nfs_fh fh; |
5137 | nfs4_stateid stateid; | |
26e976a8 | 5138 | unsigned long timestamp; |
fa178f29 | 5139 | struct nfs_fattr fattr; |
fe650407 | 5140 | int rpc_status; |
039b756a PT |
5141 | struct inode *inode; |
5142 | bool roc; | |
5143 | u32 roc_barrier; | |
fe650407 TM |
5144 | }; |
5145 | ||
fe650407 TM |
5146 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5147 | { | |
5148 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5149 | |
14516c3a TM |
5150 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5151 | return; | |
938e1010 | 5152 | |
ca8acf8d | 5153 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5154 | switch (task->tk_status) { |
79708861 | 5155 | case 0: |
fa178f29 | 5156 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5157 | case -NFS4ERR_ADMIN_REVOKED: |
5158 | case -NFS4ERR_DELEG_REVOKED: | |
5159 | case -NFS4ERR_BAD_STATEID: | |
5160 | case -NFS4ERR_OLD_STATEID: | |
5161 | case -NFS4ERR_STALE_STATEID: | |
5162 | case -NFS4ERR_EXPIRED: | |
5163 | task->tk_status = 0; | |
039b756a PT |
5164 | if (data->roc) |
5165 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5166 | break; |
79708861 | 5167 | default: |
8478eaa1 N |
5168 | if (nfs4_async_handle_error(task, data->res.server, |
5169 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5170 | rpc_restart_call_prepare(task); |
79708861 RL |
5171 | return; |
5172 | } | |
5173 | } | |
5174 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5175 | } |
5176 | ||
5177 | static void nfs4_delegreturn_release(void *calldata) | |
5178 | { | |
039b756a PT |
5179 | struct nfs4_delegreturndata *data = calldata; |
5180 | ||
5181 | if (data->roc) | |
5182 | pnfs_roc_release(data->inode); | |
fe650407 TM |
5183 | kfree(calldata); |
5184 | } | |
5185 | ||
938e1010 AA |
5186 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5187 | { | |
5188 | struct nfs4_delegreturndata *d_data; | |
5189 | ||
5190 | d_data = (struct nfs4_delegreturndata *)data; | |
5191 | ||
039b756a PT |
5192 | if (d_data->roc && |
5193 | pnfs_roc_drain(d_data->inode, &d_data->roc_barrier, task)) | |
5194 | return; | |
5195 | ||
d9afbd1b TM |
5196 | nfs4_setup_sequence(d_data->res.server, |
5197 | &d_data->args.seq_args, | |
5198 | &d_data->res.seq_res, | |
5199 | task); | |
938e1010 | 5200 | } |
938e1010 | 5201 | |
c8d149f3 | 5202 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5203 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5204 | .rpc_call_done = nfs4_delegreturn_done, |
5205 | .rpc_release = nfs4_delegreturn_release, | |
5206 | }; | |
5207 | ||
e6f81075 | 5208 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5209 | { |
5210 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5211 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5212 | struct rpc_task *task; |
5138fde0 TM |
5213 | struct rpc_message msg = { |
5214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5215 | .rpc_cred = cred, | |
5216 | }; | |
c970aa85 TM |
5217 | struct rpc_task_setup task_setup_data = { |
5218 | .rpc_client = server->client, | |
5138fde0 | 5219 | .rpc_message = &msg, |
c970aa85 TM |
5220 | .callback_ops = &nfs4_delegreturn_ops, |
5221 | .flags = RPC_TASK_ASYNC, | |
5222 | }; | |
e6f81075 | 5223 | int status = 0; |
fe650407 | 5224 | |
8535b2be | 5225 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5226 | if (data == NULL) |
5227 | return -ENOMEM; | |
a9c92d6b | 5228 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5229 | data->args.fhandle = &data->fh; |
5230 | data->args.stateid = &data->stateid; | |
9e907fec | 5231 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5232 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5233 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5234 | data->res.fattr = &data->fattr; |
5235 | data->res.server = server; | |
5138fde0 | 5236 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5237 | data->timestamp = jiffies; |
fe650407 | 5238 | data->rpc_status = 0; |
039b756a PT |
5239 | data->inode = inode; |
5240 | data->roc = list_empty(&NFS_I(inode)->open_files) ? | |
5241 | pnfs_roc(inode) : false; | |
fe650407 | 5242 | |
c970aa85 | 5243 | task_setup_data.callback_data = data; |
1174dd1f TM |
5244 | msg.rpc_argp = &data->args; |
5245 | msg.rpc_resp = &data->res; | |
c970aa85 | 5246 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5247 | if (IS_ERR(task)) |
fe650407 | 5248 | return PTR_ERR(task); |
e6f81075 TM |
5249 | if (!issync) |
5250 | goto out; | |
fe650407 | 5251 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5252 | if (status != 0) |
5253 | goto out; | |
5254 | status = data->rpc_status; | |
e144cbcc TM |
5255 | if (status == 0) |
5256 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5257 | else | |
5258 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5259 | out: |
e6b3c4db | 5260 | rpc_put_task(task); |
fe650407 | 5261 | return status; |
1da177e4 LT |
5262 | } |
5263 | ||
e6f81075 | 5264 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5265 | { |
5266 | struct nfs_server *server = NFS_SERVER(inode); | |
5267 | struct nfs4_exception exception = { }; | |
5268 | int err; | |
5269 | do { | |
e6f81075 | 5270 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5271 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5272 | switch (err) { |
5273 | case -NFS4ERR_STALE_STATEID: | |
5274 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5275 | case 0: |
5276 | return 0; | |
5277 | } | |
5278 | err = nfs4_handle_exception(server, err, &exception); | |
5279 | } while (exception.retry); | |
5280 | return err; | |
5281 | } | |
5282 | ||
5283 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5284 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5285 | ||
5286 | /* | |
5287 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5288 | */ | |
5289 | static unsigned long | |
5290 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5291 | { | |
416ad3c9 | 5292 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5293 | timeout <<= 1; |
5294 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5295 | return NFS4_LOCK_MAXTIMEOUT; | |
5296 | return timeout; | |
5297 | } | |
5298 | ||
1da177e4 LT |
5299 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5300 | { | |
5301 | struct inode *inode = state->inode; | |
5302 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5303 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5304 | struct nfs_lockt_args arg = { |
1da177e4 | 5305 | .fh = NFS_FH(inode), |
911d1aaf | 5306 | .fl = request, |
1da177e4 | 5307 | }; |
911d1aaf TM |
5308 | struct nfs_lockt_res res = { |
5309 | .denied = request, | |
1da177e4 LT |
5310 | }; |
5311 | struct rpc_message msg = { | |
5312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5313 | .rpc_argp = &arg, | |
5314 | .rpc_resp = &res, | |
5315 | .rpc_cred = state->owner->so_cred, | |
5316 | }; | |
1da177e4 LT |
5317 | struct nfs4_lock_state *lsp; |
5318 | int status; | |
5319 | ||
911d1aaf | 5320 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5321 | status = nfs4_set_lock_state(state, request); |
5322 | if (status != 0) | |
5323 | goto out; | |
5324 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5325 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5326 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5327 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5328 | switch (status) { |
5329 | case 0: | |
5330 | request->fl_type = F_UNLCK; | |
5331 | break; | |
5332 | case -NFS4ERR_DENIED: | |
5333 | status = 0; | |
1da177e4 | 5334 | } |
70cc6487 | 5335 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5336 | request->fl_ops = NULL; |
8d0a8a9d | 5337 | out: |
1da177e4 LT |
5338 | return status; |
5339 | } | |
5340 | ||
5341 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5342 | { | |
5343 | struct nfs4_exception exception = { }; | |
5344 | int err; | |
5345 | ||
5346 | do { | |
d1b748a5 TM |
5347 | err = _nfs4_proc_getlk(state, cmd, request); |
5348 | trace_nfs4_get_lock(request, state, cmd, err); | |
5349 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5350 | &exception); |
5351 | } while (exception.retry); | |
5352 | return err; | |
5353 | } | |
5354 | ||
5355 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5356 | { | |
5357 | int res = 0; | |
5358 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5359 | case FL_POSIX: | |
5360 | res = posix_lock_file_wait(file, fl); | |
5361 | break; | |
5362 | case FL_FLOCK: | |
5363 | res = flock_lock_file_wait(file, fl); | |
5364 | break; | |
5365 | default: | |
5366 | BUG(); | |
5367 | } | |
1da177e4 LT |
5368 | return res; |
5369 | } | |
5370 | ||
faf5f49c | 5371 | struct nfs4_unlockdata { |
911d1aaf TM |
5372 | struct nfs_locku_args arg; |
5373 | struct nfs_locku_res res; | |
faf5f49c TM |
5374 | struct nfs4_lock_state *lsp; |
5375 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5376 | struct file_lock fl; |
5377 | const struct nfs_server *server; | |
26e976a8 | 5378 | unsigned long timestamp; |
faf5f49c TM |
5379 | }; |
5380 | ||
911d1aaf TM |
5381 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5382 | struct nfs_open_context *ctx, | |
5383 | struct nfs4_lock_state *lsp, | |
5384 | struct nfs_seqid *seqid) | |
5385 | { | |
5386 | struct nfs4_unlockdata *p; | |
5387 | struct inode *inode = lsp->ls_state->inode; | |
5388 | ||
8535b2be | 5389 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5390 | if (p == NULL) |
5391 | return NULL; | |
5392 | p->arg.fh = NFS_FH(inode); | |
5393 | p->arg.fl = &p->fl; | |
5394 | p->arg.seqid = seqid; | |
c1d51931 | 5395 | p->res.seqid = seqid; |
911d1aaf TM |
5396 | p->lsp = lsp; |
5397 | atomic_inc(&lsp->ls_count); | |
5398 | /* Ensure we don't close file until we're done freeing locks! */ | |
5399 | p->ctx = get_nfs_open_context(ctx); | |
5400 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5401 | p->server = NFS_SERVER(inode); | |
5402 | return p; | |
5403 | } | |
5404 | ||
06f814a3 | 5405 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5406 | { |
963d8fe5 | 5407 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5408 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5409 | nfs4_put_lock_state(calldata->lsp); |
5410 | put_nfs_open_context(calldata->ctx); | |
5411 | kfree(calldata); | |
faf5f49c TM |
5412 | } |
5413 | ||
963d8fe5 | 5414 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5415 | { |
963d8fe5 | 5416 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5417 | |
14516c3a TM |
5418 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5419 | return; | |
faf5f49c TM |
5420 | switch (task->tk_status) { |
5421 | case 0: | |
26e976a8 | 5422 | renew_lease(calldata->server, calldata->timestamp); |
c69899a1 TM |
5423 | do_vfs_lock(calldata->fl.fl_file, &calldata->fl); |
5424 | if (nfs4_update_lock_stateid(calldata->lsp, | |
5425 | &calldata->res.stateid)) | |
5426 | break; | |
9e33bed5 TM |
5427 | case -NFS4ERR_BAD_STATEID: |
5428 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5429 | case -NFS4ERR_STALE_STATEID: |
5430 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5431 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5432 | &calldata->lsp->ls_stateid)) | |
5433 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5434 | break; |
5435 | default: | |
8478eaa1 N |
5436 | if (nfs4_async_handle_error(task, calldata->server, |
5437 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5438 | rpc_restart_call_prepare(task); |
faf5f49c | 5439 | } |
2b1bc308 | 5440 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5441 | } |
5442 | ||
4ce70ada | 5443 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5444 | { |
4ce70ada | 5445 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5446 | |
911d1aaf | 5447 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5448 | goto out_wait; |
425c1d4e | 5449 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5450 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5451 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5452 | goto out_no_action; |
faf5f49c | 5453 | } |
26e976a8 | 5454 | calldata->timestamp = jiffies; |
035168ab | 5455 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5456 | &calldata->arg.seq_args, |
2240a9e2 TM |
5457 | &calldata->res.seq_res, |
5458 | task) != 0) | |
5459 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5460 | return; |
5461 | out_no_action: | |
5462 | task->tk_action = NULL; | |
5463 | out_wait: | |
5464 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5465 | } |
5466 | ||
963d8fe5 | 5467 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5468 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5469 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5470 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5471 | }; |
5472 | ||
a5d16a4d TM |
5473 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5474 | struct nfs_open_context *ctx, | |
5475 | struct nfs4_lock_state *lsp, | |
5476 | struct nfs_seqid *seqid) | |
5477 | { | |
5478 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5479 | struct rpc_message msg = { |
5480 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5481 | .rpc_cred = ctx->cred, | |
5482 | }; | |
c970aa85 TM |
5483 | struct rpc_task_setup task_setup_data = { |
5484 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5485 | .rpc_message = &msg, |
c970aa85 | 5486 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5487 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5488 | .flags = RPC_TASK_ASYNC, |
5489 | }; | |
a5d16a4d | 5490 | |
fa940720 WAA |
5491 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5492 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5493 | ||
137d6aca FF |
5494 | /* Ensure this is an unlock - when canceling a lock, the |
5495 | * canceled lock is passed in, and it won't be an unlock. | |
5496 | */ | |
5497 | fl->fl_type = F_UNLCK; | |
5498 | ||
a5d16a4d TM |
5499 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5500 | if (data == NULL) { | |
5501 | nfs_free_seqid(seqid); | |
5502 | return ERR_PTR(-ENOMEM); | |
5503 | } | |
5504 | ||
a9c92d6b | 5505 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5506 | msg.rpc_argp = &data->arg; |
5507 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5508 | task_setup_data.callback_data = data; |
5509 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5510 | } |
5511 | ||
faf5f49c TM |
5512 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5513 | { | |
65b62a29 TM |
5514 | struct inode *inode = state->inode; |
5515 | struct nfs4_state_owner *sp = state->owner; | |
5516 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5517 | struct nfs_seqid *seqid; |
1da177e4 | 5518 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5519 | struct rpc_task *task; |
5520 | int status = 0; | |
536ff0f8 | 5521 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5522 | |
8d0a8a9d | 5523 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5524 | /* Unlock _before_ we do the RPC call */ |
5525 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5526 | /* Exclude nfs_delegation_claim_locks() */ |
5527 | mutex_lock(&sp->so_delegreturn_mutex); | |
5528 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5529 | down_read(&nfsi->rwsem); |
5530 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5531 | up_read(&nfsi->rwsem); | |
65b62a29 | 5532 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5533 | goto out; |
19e03c57 TM |
5534 | } |
5535 | up_read(&nfsi->rwsem); | |
65b62a29 | 5536 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5537 | if (status != 0) |
9b073574 TM |
5538 | goto out; |
5539 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5540 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5541 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5542 | goto out; | |
8535b2be | 5543 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5544 | status = -ENOMEM; |
badc76dd | 5545 | if (IS_ERR(seqid)) |
9b073574 | 5546 | goto out; |
cd3758e3 | 5547 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5548 | status = PTR_ERR(task); |
5549 | if (IS_ERR(task)) | |
9b073574 | 5550 | goto out; |
a5d16a4d | 5551 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5552 | rpc_put_task(task); |
9b073574 | 5553 | out: |
536ff0f8 | 5554 | request->fl_flags = fl_flags; |
d1b748a5 | 5555 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5556 | return status; |
5557 | } | |
5558 | ||
a5d16a4d TM |
5559 | struct nfs4_lockdata { |
5560 | struct nfs_lock_args arg; | |
5561 | struct nfs_lock_res res; | |
5562 | struct nfs4_lock_state *lsp; | |
5563 | struct nfs_open_context *ctx; | |
5564 | struct file_lock fl; | |
26e976a8 | 5565 | unsigned long timestamp; |
a5d16a4d TM |
5566 | int rpc_status; |
5567 | int cancelled; | |
66179efe | 5568 | struct nfs_server *server; |
a5d16a4d TM |
5569 | }; |
5570 | ||
5571 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5572 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5573 | gfp_t gfp_mask) | |
1da177e4 | 5574 | { |
a5d16a4d TM |
5575 | struct nfs4_lockdata *p; |
5576 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5577 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5578 | |
8535b2be | 5579 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5580 | if (p == NULL) |
5581 | return NULL; | |
5582 | ||
5583 | p->arg.fh = NFS_FH(inode); | |
5584 | p->arg.fl = &p->fl; | |
8535b2be | 5585 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5586 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5587 | goto out_free; |
8535b2be | 5588 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
badc76dd | 5589 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5590 | goto out_free_seqid; |
7539bbab | 5591 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5592 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5593 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5594 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5595 | p->lsp = lsp; |
66179efe | 5596 | p->server = server; |
a5d16a4d TM |
5597 | atomic_inc(&lsp->ls_count); |
5598 | p->ctx = get_nfs_open_context(ctx); | |
5599 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5600 | return p; | |
2f74c0a0 TM |
5601 | out_free_seqid: |
5602 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5603 | out_free: |
5604 | kfree(p); | |
5605 | return NULL; | |
5606 | } | |
5607 | ||
5608 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5609 | { | |
5610 | struct nfs4_lockdata *data = calldata; | |
5611 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5612 | |
3110ff80 | 5613 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5614 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5615 | goto out_wait; |
a5d16a4d | 5616 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5617 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5618 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5619 | goto out_release_lock_seqid; |
8fe72bac | 5620 | } |
425c1d4e TM |
5621 | nfs4_stateid_copy(&data->arg.open_stateid, |
5622 | &state->open_stateid); | |
a5d16a4d | 5623 | data->arg.new_lock_owner = 1; |
c1d51931 | 5624 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5625 | } else { |
2f74c0a0 | 5626 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5627 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5628 | &data->lsp->ls_stateid); | |
5629 | } | |
5d422301 TM |
5630 | if (!nfs4_valid_open_stateid(state)) { |
5631 | data->rpc_status = -EBADF; | |
5632 | task->tk_action = NULL; | |
5633 | goto out_release_open_seqid; | |
5634 | } | |
26e976a8 | 5635 | data->timestamp = jiffies; |
035168ab TM |
5636 | if (nfs4_setup_sequence(data->server, |
5637 | &data->arg.seq_args, | |
2240a9e2 | 5638 | &data->res.seq_res, |
d9afbd1b | 5639 | task) == 0) |
66179efe | 5640 | return; |
5d422301 | 5641 | out_release_open_seqid: |
2240a9e2 TM |
5642 | nfs_release_seqid(data->arg.open_seqid); |
5643 | out_release_lock_seqid: | |
5644 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5645 | out_wait: |
5646 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5647 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5648 | } |
5649 | ||
a5d16a4d TM |
5650 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5651 | { | |
5652 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5653 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5654 | |
3110ff80 | 5655 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5656 | |
14516c3a TM |
5657 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5658 | return; | |
66179efe | 5659 | |
a5d16a4d | 5660 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5661 | switch (task->tk_status) { |
5662 | case 0: | |
39071e6f TM |
5663 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), |
5664 | data->timestamp); | |
c69899a1 TM |
5665 | if (data->arg.new_lock) { |
5666 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
5667 | if (do_vfs_lock(data->fl.fl_file, &data->fl) < 0) { | |
5668 | rpc_restart_call_prepare(task); | |
5669 | break; | |
5670 | } | |
5671 | } | |
39071e6f TM |
5672 | if (data->arg.new_lock_owner != 0) { |
5673 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5674 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5675 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5676 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5677 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5678 | break; |
5679 | case -NFS4ERR_BAD_STATEID: | |
5680 | case -NFS4ERR_OLD_STATEID: | |
5681 | case -NFS4ERR_STALE_STATEID: | |
5682 | case -NFS4ERR_EXPIRED: | |
5683 | if (data->arg.new_lock_owner != 0) { | |
5684 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5685 | &lsp->ls_state->open_stateid)) | |
5686 | rpc_restart_call_prepare(task); | |
5687 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5688 | &lsp->ls_stateid)) | |
5689 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5690 | } |
3110ff80 | 5691 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5692 | } |
5693 | ||
5694 | static void nfs4_lock_release(void *calldata) | |
5695 | { | |
5696 | struct nfs4_lockdata *data = calldata; | |
5697 | ||
3110ff80 | 5698 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5699 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5700 | if (data->cancelled != 0) { |
5701 | struct rpc_task *task; | |
5702 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5703 | data->arg.lock_seqid); | |
5704 | if (!IS_ERR(task)) | |
bf294b41 | 5705 | rpc_put_task_async(task); |
3110ff80 | 5706 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5707 | } else |
5708 | nfs_free_seqid(data->arg.lock_seqid); | |
5709 | nfs4_put_lock_state(data->lsp); | |
5710 | put_nfs_open_context(data->ctx); | |
5711 | kfree(data); | |
3110ff80 | 5712 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5713 | } |
5714 | ||
5715 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5716 | .rpc_call_prepare = nfs4_lock_prepare, | |
5717 | .rpc_call_done = nfs4_lock_done, | |
5718 | .rpc_release = nfs4_lock_release, | |
5719 | }; | |
5720 | ||
2bee72a6 TM |
5721 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5722 | { | |
2bee72a6 TM |
5723 | switch (error) { |
5724 | case -NFS4ERR_ADMIN_REVOKED: | |
5725 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5726 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5727 | if (new_lock_owner != 0 || |
795a88c9 | 5728 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5729 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5730 | break; |
5731 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5732 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5733 | case -NFS4ERR_EXPIRED: |
5734 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5735 | }; |
5736 | } | |
5737 | ||
afe6c27c | 5738 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5739 | { |
5740 | struct nfs4_lockdata *data; | |
5741 | struct rpc_task *task; | |
5138fde0 TM |
5742 | struct rpc_message msg = { |
5743 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5744 | .rpc_cred = state->owner->so_cred, | |
5745 | }; | |
c970aa85 TM |
5746 | struct rpc_task_setup task_setup_data = { |
5747 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5748 | .rpc_message = &msg, |
c970aa85 | 5749 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5750 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5751 | .flags = RPC_TASK_ASYNC, |
5752 | }; | |
a5d16a4d TM |
5753 | int ret; |
5754 | ||
3110ff80 | 5755 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5756 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5757 | fl->fl_u.nfs4_fl.owner, |
5758 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5759 | if (data == NULL) |
5760 | return -ENOMEM; | |
5761 | if (IS_SETLKW(cmd)) | |
5762 | data->arg.block = 1; | |
a9c92d6b | 5763 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5764 | msg.rpc_argp = &data->arg; |
5765 | msg.rpc_resp = &data->res; | |
c970aa85 | 5766 | task_setup_data.callback_data = data; |
8fe72bac TM |
5767 | if (recovery_type > NFS_LOCK_NEW) { |
5768 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5769 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5770 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5771 | } else |
5772 | data->arg.new_lock = 1; | |
c970aa85 | 5773 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5774 | if (IS_ERR(task)) |
a5d16a4d | 5775 | return PTR_ERR(task); |
a5d16a4d TM |
5776 | ret = nfs4_wait_for_completion_rpc_task(task); |
5777 | if (ret == 0) { | |
5778 | ret = data->rpc_status; | |
2bee72a6 TM |
5779 | if (ret) |
5780 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5781 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5782 | } else |
5783 | data->cancelled = 1; | |
e6b3c4db | 5784 | rpc_put_task(task); |
3110ff80 | 5785 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5786 | return ret; |
1da177e4 LT |
5787 | } |
5788 | ||
5789 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5790 | { | |
202b50dc | 5791 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5792 | struct nfs4_exception exception = { |
5793 | .inode = state->inode, | |
5794 | }; | |
202b50dc TM |
5795 | int err; |
5796 | ||
5797 | do { | |
42a2d13e TM |
5798 | /* Cache the lock if possible... */ |
5799 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5800 | return 0; | |
afe6c27c | 5801 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5802 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5803 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5804 | break; |
5805 | nfs4_handle_exception(server, err, &exception); | |
5806 | } while (exception.retry); | |
5807 | return err; | |
1da177e4 LT |
5808 | } |
5809 | ||
5810 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5811 | { | |
202b50dc | 5812 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5813 | struct nfs4_exception exception = { |
5814 | .inode = state->inode, | |
5815 | }; | |
202b50dc TM |
5816 | int err; |
5817 | ||
6bfc93ef TM |
5818 | err = nfs4_set_lock_state(state, request); |
5819 | if (err != 0) | |
5820 | return err; | |
f6de7a39 | 5821 | if (!recover_lost_locks) { |
ef1820f9 N |
5822 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5823 | return 0; | |
5824 | } | |
202b50dc | 5825 | do { |
42a2d13e TM |
5826 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5827 | return 0; | |
afe6c27c | 5828 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5829 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5830 | switch (err) { |
5831 | default: | |
5832 | goto out; | |
5833 | case -NFS4ERR_GRACE: | |
5834 | case -NFS4ERR_DELAY: | |
5835 | nfs4_handle_exception(server, err, &exception); | |
5836 | err = 0; | |
5837 | } | |
202b50dc | 5838 | } while (exception.retry); |
a9ed2e25 | 5839 | out: |
202b50dc | 5840 | return err; |
1da177e4 LT |
5841 | } |
5842 | ||
f062eb6c | 5843 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5844 | /** |
5845 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5846 | * | |
5847 | * @state: NFSv4 state for an inode | |
5848 | * | |
5849 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5850 | * Otherwise a negative NFS4ERR value is returned. | |
5851 | */ | |
b01dd1d8 | 5852 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5853 | { |
eb64cf96 | 5854 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5855 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5856 | struct nfs_server *server = NFS_SERVER(state->inode); |
5857 | ||
b01dd1d8 | 5858 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5859 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5860 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5861 | ||
5862 | status = nfs41_test_stateid(server, | |
5863 | &lsp->ls_stateid, | |
5864 | cred); | |
08cb47fa | 5865 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5866 | if (status != NFS_OK) { |
3e60ffdd CL |
5867 | /* Free the stateid unless the server |
5868 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5869 | if (status != -NFS4ERR_BAD_STATEID) |
5870 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5871 | &lsp->ls_stateid, |
5872 | cred); | |
795a88c9 | 5873 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5874 | ret = status; |
5875 | } | |
5876 | } | |
5877 | }; | |
5878 | ||
5879 | return ret; | |
5880 | } | |
5881 | ||
5882 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5883 | { | |
5884 | int status = NFS_OK; | |
5885 | ||
5886 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5887 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5888 | if (status != NFS_OK) |
5889 | status = nfs4_lock_expired(state, request); | |
5890 | return status; | |
f062eb6c BS |
5891 | } |
5892 | #endif | |
5893 | ||
1da177e4 LT |
5894 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5895 | { | |
19e03c57 | 5896 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5897 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 5898 | int status = -ENOLCK; |
1da177e4 | 5899 | |
8e469ebd TM |
5900 | if ((fl_flags & FL_POSIX) && |
5901 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5902 | goto out; | |
6bfc93ef | 5903 | /* Is this a delegated open? */ |
6bfc93ef TM |
5904 | status = nfs4_set_lock_state(state, request); |
5905 | if (status != 0) | |
5906 | goto out; | |
01c3b861 TM |
5907 | request->fl_flags |= FL_ACCESS; |
5908 | status = do_vfs_lock(request->fl_file, request); | |
5909 | if (status < 0) | |
5910 | goto out; | |
19e03c57 | 5911 | down_read(&nfsi->rwsem); |
01c3b861 | 5912 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5913 | /* Yes: cache locks! */ |
01c3b861 | 5914 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5915 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5916 | status = do_vfs_lock(request->fl_file, request); | |
c69899a1 | 5917 | up_read(&nfsi->rwsem); |
9a99af49 | 5918 | goto out; |
9a99af49 | 5919 | } |
19e03c57 | 5920 | up_read(&nfsi->rwsem); |
c69899a1 | 5921 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
5922 | out: |
5923 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5924 | return status; |
5925 | } | |
5926 | ||
5927 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5928 | { | |
a1d0b5ee TM |
5929 | struct nfs4_exception exception = { |
5930 | .state = state, | |
05ffe24f | 5931 | .inode = state->inode, |
a1d0b5ee | 5932 | }; |
1da177e4 LT |
5933 | int err; |
5934 | ||
5935 | do { | |
965b5d67 | 5936 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5937 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5938 | if (err == -NFS4ERR_DENIED) |
5939 | err = -EAGAIN; | |
1da177e4 | 5940 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5941 | err, &exception); |
1da177e4 LT |
5942 | } while (exception.retry); |
5943 | return err; | |
5944 | } | |
5945 | ||
5946 | static int | |
5947 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5948 | { | |
5949 | struct nfs_open_context *ctx; | |
5950 | struct nfs4_state *state; | |
5951 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5952 | int status; | |
5953 | ||
5954 | /* verify open state */ | |
cd3758e3 | 5955 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5956 | state = ctx->state; |
5957 | ||
5958 | if (request->fl_start < 0 || request->fl_end < 0) | |
5959 | return -EINVAL; | |
5960 | ||
d953126a TM |
5961 | if (IS_GETLK(cmd)) { |
5962 | if (state != NULL) | |
5963 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5964 | return 0; | |
5965 | } | |
1da177e4 LT |
5966 | |
5967 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5968 | return -EINVAL; | |
5969 | ||
d953126a TM |
5970 | if (request->fl_type == F_UNLCK) { |
5971 | if (state != NULL) | |
5972 | return nfs4_proc_unlck(state, cmd, request); | |
5973 | return 0; | |
5974 | } | |
1da177e4 | 5975 | |
d953126a TM |
5976 | if (state == NULL) |
5977 | return -ENOLCK; | |
55725513 TM |
5978 | /* |
5979 | * Don't rely on the VFS having checked the file open mode, | |
5980 | * since it won't do this for flock() locks. | |
5981 | */ | |
f44106e2 | 5982 | switch (request->fl_type) { |
55725513 TM |
5983 | case F_RDLCK: |
5984 | if (!(filp->f_mode & FMODE_READ)) | |
5985 | return -EBADF; | |
5986 | break; | |
5987 | case F_WRLCK: | |
5988 | if (!(filp->f_mode & FMODE_WRITE)) | |
5989 | return -EBADF; | |
5990 | } | |
5991 | ||
1da177e4 LT |
5992 | do { |
5993 | status = nfs4_proc_setlk(state, cmd, request); | |
5994 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5995 | break; | |
5996 | timeout = nfs4_set_lock_task_retry(timeout); | |
5997 | status = -ERESTARTSYS; | |
5998 | if (signalled()) | |
5999 | break; | |
6000 | } while(status < 0); | |
1da177e4 LT |
6001 | return status; |
6002 | } | |
6003 | ||
db4f2e63 | 6004 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6005 | { |
6006 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6007 | int err; |
6008 | ||
6009 | err = nfs4_set_lock_state(state, fl); | |
6010 | if (err != 0) | |
db4f2e63 | 6011 | return err; |
4a706fa0 | 6012 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6013 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6014 | } |
6b3b5496 | 6015 | |
cf470c3e TM |
6016 | struct nfs_release_lockowner_data { |
6017 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6018 | struct nfs_server *server; |
cf470c3e | 6019 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6020 | struct nfs_release_lockowner_res res; |
60ea6812 | 6021 | unsigned long timestamp; |
cf470c3e TM |
6022 | }; |
6023 | ||
fbd4bfd1 CL |
6024 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6025 | { | |
6026 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 KM |
6027 | struct nfs_server *server = data->server; |
6028 | nfs40_setup_sequence(server, &data->args.seq_args, | |
6029 | &data->res.seq_res, task); | |
6030 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; | |
60ea6812 | 6031 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6032 | } |
6033 | ||
6034 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6035 | { | |
6036 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6037 | struct nfs_server *server = data->server; |
6038 | ||
b7e63a10 | 6039 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6040 | |
6041 | switch (task->tk_status) { | |
6042 | case 0: | |
6043 | renew_lease(server, data->timestamp); | |
6044 | break; | |
6045 | case -NFS4ERR_STALE_CLIENTID: | |
6046 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6047 | nfs4_schedule_lease_recovery(server->nfs_client); |
6048 | break; | |
60ea6812 CL |
6049 | case -NFS4ERR_LEASE_MOVED: |
6050 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6051 | if (nfs4_async_handle_error(task, server, |
6052 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6053 | rpc_restart_call_prepare(task); |
6054 | } | |
fbd4bfd1 CL |
6055 | } |
6056 | ||
d3c7b7cc TM |
6057 | static void nfs4_release_lockowner_release(void *calldata) |
6058 | { | |
cf470c3e | 6059 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6060 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6061 | kfree(calldata); |
6062 | } | |
6063 | ||
17280175 | 6064 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6065 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6066 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6067 | .rpc_release = nfs4_release_lockowner_release, |
6068 | }; | |
6069 | ||
f1cdae87 JL |
6070 | static void |
6071 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6072 | { |
cf470c3e | 6073 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6074 | struct rpc_message msg = { |
6075 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6076 | }; | |
6077 | ||
6078 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6079 | return; |
fbd4bfd1 | 6080 | |
cf470c3e TM |
6081 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6082 | if (!data) | |
f1cdae87 | 6083 | return; |
cf470c3e | 6084 | data->lsp = lsp; |
5ae67c4f | 6085 | data->server = server; |
cf470c3e TM |
6086 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6087 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6088 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6089 | |
cf470c3e | 6090 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6091 | msg.rpc_resp = &data->res; |
6092 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6093 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6094 | } |
6095 | ||
aa1870af BF |
6096 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6097 | ||
64c2ce8b AK |
6098 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
6099 | const void *buf, size_t buflen, | |
6100 | int flags, int type) | |
6b3b5496 | 6101 | { |
64c2ce8b AK |
6102 | if (strcmp(key, "") != 0) |
6103 | return -EINVAL; | |
4b580ee3 | 6104 | |
64c2ce8b | 6105 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
6106 | } |
6107 | ||
64c2ce8b AK |
6108 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
6109 | void *buf, size_t buflen, int type) | |
6b3b5496 | 6110 | { |
64c2ce8b AK |
6111 | if (strcmp(key, "") != 0) |
6112 | return -EINVAL; | |
aa1870af | 6113 | |
64c2ce8b | 6114 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
6115 | } |
6116 | ||
64c2ce8b AK |
6117 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
6118 | size_t list_len, const char *name, | |
6119 | size_t name_len, int type) | |
6b3b5496 | 6120 | { |
64c2ce8b | 6121 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 6122 | |
096455a2 BF |
6123 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
6124 | return 0; | |
64c2ce8b AK |
6125 | |
6126 | if (list && len <= list_len) | |
6127 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 6128 | return len; |
6b3b5496 BF |
6129 | } |
6130 | ||
c9bccef6 DQ |
6131 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6132 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
6133 | { | |
6134 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
6135 | } | |
6136 | ||
6137 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
6138 | const void *buf, size_t buflen, | |
6139 | int flags, int type) | |
6140 | { | |
6141 | if (security_ismaclabel(key)) | |
6142 | return nfs4_set_security_label(dentry, buf, buflen); | |
6143 | ||
6144 | return -EOPNOTSUPP; | |
6145 | } | |
6146 | ||
6147 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
6148 | void *buf, size_t buflen, int type) | |
6149 | { | |
6150 | if (security_ismaclabel(key)) | |
6151 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
6152 | return -EOPNOTSUPP; | |
6153 | } | |
6154 | ||
6155 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
6156 | size_t list_len, const char *name, | |
6157 | size_t name_len, int type) | |
6158 | { | |
6159 | size_t len = 0; | |
6160 | ||
6161 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
6162 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
6163 | if (list && len <= list_len) | |
6164 | security_inode_listsecurity(dentry->d_inode, list, len); | |
6165 | } | |
6166 | return len; | |
6167 | } | |
6168 | ||
6169 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6170 | .prefix = XATTR_SECURITY_PREFIX, | |
6171 | .list = nfs4_xattr_list_nfs4_label, | |
6172 | .get = nfs4_xattr_get_nfs4_label, | |
6173 | .set = nfs4_xattr_set_nfs4_label, | |
6174 | }; | |
6175 | #endif | |
6176 | ||
6177 | ||
533eb461 AA |
6178 | /* |
6179 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6180 | */ | |
69aaaae1 TM |
6181 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6182 | { | |
533eb461 AA |
6183 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6184 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6185 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6186 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6187 | return; |
6188 | ||
6189 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6190 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6191 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6192 | fattr->nlink = 2; | |
6193 | } | |
6194 | ||
f05d147f BS |
6195 | static 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) | |
683b57b4 TM |
6199 | { |
6200 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6201 | u32 bitmask[3] = { |
361e624f | 6202 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6203 | }; |
6204 | struct nfs4_fs_locations_arg args = { | |
6205 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6206 | .name = name, |
683b57b4 TM |
6207 | .page = page, |
6208 | .bitmask = bitmask, | |
6209 | }; | |
22958463 BH |
6210 | struct nfs4_fs_locations_res res = { |
6211 | .fs_locations = fs_locations, | |
6212 | }; | |
683b57b4 TM |
6213 | struct rpc_message msg = { |
6214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6215 | .rpc_argp = &args, | |
22958463 | 6216 | .rpc_resp = &res, |
683b57b4 TM |
6217 | }; |
6218 | int status; | |
6219 | ||
3110ff80 | 6220 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6221 | |
6222 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6223 | * is not supported */ | |
6224 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6225 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6226 | else | |
6227 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6228 | ||
c228fd3a | 6229 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6230 | fs_locations->server = server; |
830b8e33 | 6231 | fs_locations->nlocations = 0; |
f05d147f | 6232 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6233 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6234 | return status; |
6235 | } | |
6236 | ||
f05d147f BS |
6237 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6238 | const struct qstr *name, | |
6239 | struct nfs4_fs_locations *fs_locations, | |
6240 | struct page *page) | |
db0a9593 BS |
6241 | { |
6242 | struct nfs4_exception exception = { }; | |
6243 | int err; | |
6244 | do { | |
078ea3df TM |
6245 | err = _nfs4_proc_fs_locations(client, dir, name, |
6246 | fs_locations, page); | |
6247 | trace_nfs4_get_fs_locations(dir, name, err); | |
6248 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6249 | &exception); |
6250 | } while (exception.retry); | |
6251 | return err; | |
6252 | } | |
6253 | ||
b03d735b CL |
6254 | /* |
6255 | * This operation also signals the server that this client is | |
6256 | * performing migration recovery. The server can stop returning | |
6257 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6258 | * appended to this compound to identify the client ID which is | |
6259 | * performing recovery. | |
6260 | */ | |
6261 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6262 | struct nfs4_fs_locations *locations, | |
6263 | struct page *page, struct rpc_cred *cred) | |
6264 | { | |
6265 | struct nfs_server *server = NFS_SERVER(inode); | |
6266 | struct rpc_clnt *clnt = server->client; | |
6267 | u32 bitmask[2] = { | |
6268 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6269 | }; | |
6270 | struct nfs4_fs_locations_arg args = { | |
6271 | .clientid = server->nfs_client->cl_clientid, | |
6272 | .fh = NFS_FH(inode), | |
6273 | .page = page, | |
6274 | .bitmask = bitmask, | |
6275 | .migration = 1, /* skip LOOKUP */ | |
6276 | .renew = 1, /* append RENEW */ | |
6277 | }; | |
6278 | struct nfs4_fs_locations_res res = { | |
6279 | .fs_locations = locations, | |
6280 | .migration = 1, | |
6281 | .renew = 1, | |
6282 | }; | |
6283 | struct rpc_message msg = { | |
6284 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6285 | .rpc_argp = &args, | |
6286 | .rpc_resp = &res, | |
6287 | .rpc_cred = cred, | |
6288 | }; | |
6289 | unsigned long now = jiffies; | |
6290 | int status; | |
6291 | ||
6292 | nfs_fattr_init(&locations->fattr); | |
6293 | locations->server = server; | |
6294 | locations->nlocations = 0; | |
6295 | ||
6296 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6297 | nfs4_set_sequence_privileged(&args.seq_args); | |
6298 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6299 | &args.seq_args, &res.seq_res); | |
6300 | if (status) | |
6301 | return status; | |
6302 | ||
6303 | renew_lease(server, now); | |
6304 | return 0; | |
6305 | } | |
6306 | ||
6307 | #ifdef CONFIG_NFS_V4_1 | |
6308 | ||
6309 | /* | |
6310 | * This operation also signals the server that this client is | |
6311 | * performing migration recovery. The server can stop asserting | |
6312 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6313 | * performing this operation is identified in the SEQUENCE | |
6314 | * operation in this compound. | |
6315 | * | |
6316 | * When the client supports GETATTR(fs_locations_info), it can | |
6317 | * be plumbed in here. | |
6318 | */ | |
6319 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6320 | struct nfs4_fs_locations *locations, | |
6321 | struct page *page, struct rpc_cred *cred) | |
6322 | { | |
6323 | struct nfs_server *server = NFS_SERVER(inode); | |
6324 | struct rpc_clnt *clnt = server->client; | |
6325 | u32 bitmask[2] = { | |
6326 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6327 | }; | |
6328 | struct nfs4_fs_locations_arg args = { | |
6329 | .fh = NFS_FH(inode), | |
6330 | .page = page, | |
6331 | .bitmask = bitmask, | |
6332 | .migration = 1, /* skip LOOKUP */ | |
6333 | }; | |
6334 | struct nfs4_fs_locations_res res = { | |
6335 | .fs_locations = locations, | |
6336 | .migration = 1, | |
6337 | }; | |
6338 | struct rpc_message msg = { | |
6339 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6340 | .rpc_argp = &args, | |
6341 | .rpc_resp = &res, | |
6342 | .rpc_cred = cred, | |
6343 | }; | |
6344 | int status; | |
6345 | ||
6346 | nfs_fattr_init(&locations->fattr); | |
6347 | locations->server = server; | |
6348 | locations->nlocations = 0; | |
6349 | ||
6350 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6351 | nfs4_set_sequence_privileged(&args.seq_args); | |
6352 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6353 | &args.seq_args, &res.seq_res); | |
6354 | if (status == NFS4_OK && | |
6355 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6356 | status = -NFS4ERR_LEASE_MOVED; | |
6357 | return status; | |
6358 | } | |
6359 | ||
6360 | #endif /* CONFIG_NFS_V4_1 */ | |
6361 | ||
6362 | /** | |
6363 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6364 | * @inode: inode on FSID that is migrating | |
6365 | * @locations: result of query | |
6366 | * @page: buffer | |
6367 | * @cred: credential to use for this operation | |
6368 | * | |
6369 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6370 | * operation failed, or a negative errno if a local error occurred. | |
6371 | * | |
6372 | * On success, "locations" is filled in, but if the server has | |
6373 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6374 | * asserted. | |
6375 | * | |
6376 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6377 | * from this client that require migration recovery. | |
6378 | */ | |
6379 | int nfs4_proc_get_locations(struct inode *inode, | |
6380 | struct nfs4_fs_locations *locations, | |
6381 | struct page *page, struct rpc_cred *cred) | |
6382 | { | |
6383 | struct nfs_server *server = NFS_SERVER(inode); | |
6384 | struct nfs_client *clp = server->nfs_client; | |
6385 | const struct nfs4_mig_recovery_ops *ops = | |
6386 | clp->cl_mvops->mig_recovery_ops; | |
6387 | struct nfs4_exception exception = { }; | |
6388 | int status; | |
6389 | ||
6390 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6391 | (unsigned long long)server->fsid.major, | |
6392 | (unsigned long long)server->fsid.minor, | |
6393 | clp->cl_hostname); | |
6394 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6395 | ||
6396 | do { | |
6397 | status = ops->get_locations(inode, locations, page, cred); | |
6398 | if (status != -NFS4ERR_DELAY) | |
6399 | break; | |
6400 | nfs4_handle_exception(server, status, &exception); | |
6401 | } while (exception.retry); | |
6402 | return status; | |
6403 | } | |
6404 | ||
44c99933 CL |
6405 | /* |
6406 | * This operation also signals the server that this client is | |
6407 | * performing "lease moved" recovery. The server can stop | |
6408 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6409 | * is appended to this compound to identify the client ID which is | |
6410 | * performing recovery. | |
6411 | */ | |
6412 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6413 | { | |
6414 | struct nfs_server *server = NFS_SERVER(inode); | |
6415 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6416 | struct rpc_clnt *clnt = server->client; | |
6417 | struct nfs4_fsid_present_arg args = { | |
6418 | .fh = NFS_FH(inode), | |
6419 | .clientid = clp->cl_clientid, | |
6420 | .renew = 1, /* append RENEW */ | |
6421 | }; | |
6422 | struct nfs4_fsid_present_res res = { | |
6423 | .renew = 1, | |
6424 | }; | |
6425 | struct rpc_message msg = { | |
6426 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6427 | .rpc_argp = &args, | |
6428 | .rpc_resp = &res, | |
6429 | .rpc_cred = cred, | |
6430 | }; | |
6431 | unsigned long now = jiffies; | |
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) | |
6444 | return status; | |
6445 | ||
6446 | do_renew_lease(clp, now); | |
6447 | return 0; | |
6448 | } | |
6449 | ||
6450 | #ifdef CONFIG_NFS_V4_1 | |
6451 | ||
6452 | /* | |
6453 | * This operation also signals the server that this client is | |
6454 | * performing "lease moved" recovery. The server can stop asserting | |
6455 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6456 | * this operation is identified in the SEQUENCE operation in this | |
6457 | * compound. | |
6458 | */ | |
6459 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6460 | { | |
6461 | struct nfs_server *server = NFS_SERVER(inode); | |
6462 | struct rpc_clnt *clnt = server->client; | |
6463 | struct nfs4_fsid_present_arg args = { | |
6464 | .fh = NFS_FH(inode), | |
6465 | }; | |
6466 | struct nfs4_fsid_present_res res = { | |
6467 | }; | |
6468 | struct rpc_message msg = { | |
6469 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6470 | .rpc_argp = &args, | |
6471 | .rpc_resp = &res, | |
6472 | .rpc_cred = cred, | |
6473 | }; | |
6474 | int status; | |
6475 | ||
6476 | res.fh = nfs_alloc_fhandle(); | |
6477 | if (res.fh == NULL) | |
6478 | return -ENOMEM; | |
6479 | ||
6480 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6481 | nfs4_set_sequence_privileged(&args.seq_args); | |
6482 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6483 | &args.seq_args, &res.seq_res); | |
6484 | nfs_free_fhandle(res.fh); | |
6485 | if (status == NFS4_OK && | |
6486 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6487 | status = -NFS4ERR_LEASE_MOVED; | |
6488 | return status; | |
6489 | } | |
6490 | ||
6491 | #endif /* CONFIG_NFS_V4_1 */ | |
6492 | ||
6493 | /** | |
6494 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6495 | * @inode: inode on FSID to check | |
6496 | * @cred: credential to use for this operation | |
6497 | * | |
6498 | * Server indicates whether the FSID is present, moved, or not | |
6499 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6500 | * condition for this client ID. | |
6501 | * | |
6502 | * Returns NFS4_OK if the FSID is present on this server, | |
6503 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6504 | * NFS4ERR code if some error occurred on the server, or a | |
6505 | * negative errno if a local failure occurred. | |
6506 | */ | |
6507 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6508 | { | |
6509 | struct nfs_server *server = NFS_SERVER(inode); | |
6510 | struct nfs_client *clp = server->nfs_client; | |
6511 | const struct nfs4_mig_recovery_ops *ops = | |
6512 | clp->cl_mvops->mig_recovery_ops; | |
6513 | struct nfs4_exception exception = { }; | |
6514 | int status; | |
6515 | ||
6516 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6517 | (unsigned long long)server->fsid.major, | |
6518 | (unsigned long long)server->fsid.minor, | |
6519 | clp->cl_hostname); | |
6520 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6521 | ||
6522 | do { | |
6523 | status = ops->fsid_present(inode, cred); | |
6524 | if (status != -NFS4ERR_DELAY) | |
6525 | break; | |
6526 | nfs4_handle_exception(server, status, &exception); | |
6527 | } while (exception.retry); | |
6528 | return status; | |
6529 | } | |
6530 | ||
5ec16a85 | 6531 | /** |
a5250def WAA |
6532 | * If 'use_integrity' is true and the state managment nfs_client |
6533 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6534 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6535 | * Considerations sections. Otherwise, just use the user cred with the | |
6536 | * filesystem's rpc_client. | |
5ec16a85 | 6537 | */ |
a5250def | 6538 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6539 | { |
6540 | int status; | |
6541 | struct nfs4_secinfo_arg args = { | |
6542 | .dir_fh = NFS_FH(dir), | |
6543 | .name = name, | |
6544 | }; | |
6545 | struct nfs4_secinfo_res res = { | |
6546 | .flavors = flavors, | |
6547 | }; | |
6548 | struct rpc_message msg = { | |
6549 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6550 | .rpc_argp = &args, | |
6551 | .rpc_resp = &res, | |
6552 | }; | |
a5250def | 6553 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6554 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6555 | |
6556 | if (use_integrity) { | |
6557 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6558 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6559 | msg.rpc_cred = cred; | |
a5250def | 6560 | } |
5a5ea0d4 BS |
6561 | |
6562 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6563 | |
6564 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6565 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6566 | ||
a5250def WAA |
6567 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6568 | &res.seq_res, 0); | |
5a5ea0d4 | 6569 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6570 | |
7cb852df WAA |
6571 | if (cred) |
6572 | put_rpccred(cred); | |
a5250def | 6573 | |
5a5ea0d4 BS |
6574 | return status; |
6575 | } | |
6576 | ||
72de53ec BS |
6577 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6578 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6579 | { |
6580 | struct nfs4_exception exception = { }; | |
6581 | int err; | |
6582 | do { | |
a5250def WAA |
6583 | err = -NFS4ERR_WRONGSEC; |
6584 | ||
6585 | /* try to use integrity protection with machine cred */ | |
6586 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6587 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6588 | ||
6589 | /* | |
6590 | * if unable to use integrity protection, or SECINFO with | |
6591 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6592 | * disallowed by spec, but exists in deployed servers) use | |
6593 | * the current filesystem's rpc_client and the user cred. | |
6594 | */ | |
6595 | if (err == -NFS4ERR_WRONGSEC) | |
6596 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6597 | ||
078ea3df TM |
6598 | trace_nfs4_secinfo(dir, name, err); |
6599 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6600 | &exception); |
6601 | } while (exception.retry); | |
6602 | return err; | |
6603 | } | |
6604 | ||
557134a3 | 6605 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6606 | /* |
6607 | * Check the exchange flags returned by the server for invalid flags, having | |
6608 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6609 | * DS flags set. | |
6610 | */ | |
6611 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6612 | { | |
6613 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6614 | goto out_inval; | |
6615 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6616 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6617 | goto out_inval; | |
6618 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6619 | goto out_inval; | |
6620 | return NFS_OK; | |
6621 | out_inval: | |
6622 | return -NFS4ERR_INVAL; | |
6623 | } | |
6624 | ||
78fe0f41 | 6625 | static bool |
79d4e1f0 CL |
6626 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6627 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6628 | { |
6629 | if (a->server_scope_sz == b->server_scope_sz && | |
6630 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6631 | return true; | |
6632 | ||
6633 | return false; | |
6634 | } | |
6635 | ||
7c44f1ae WAA |
6636 | /* |
6637 | * nfs4_proc_bind_conn_to_session() | |
6638 | * | |
6639 | * The 4.1 client currently uses the same TCP connection for the | |
6640 | * fore and backchannel. | |
6641 | */ | |
2cf047c9 | 6642 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6643 | { |
6644 | int status; | |
6645 | struct nfs41_bind_conn_to_session_res res; | |
6646 | struct rpc_message msg = { | |
6647 | .rpc_proc = | |
6648 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6649 | .rpc_argp = clp, | |
6650 | .rpc_resp = &res, | |
2cf047c9 | 6651 | .rpc_cred = cred, |
7c44f1ae WAA |
6652 | }; |
6653 | ||
6654 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6655 | |
6656 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6657 | if (unlikely(res.session == NULL)) { | |
6658 | status = -ENOMEM; | |
6659 | goto out; | |
6660 | } | |
6661 | ||
6662 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6663 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6664 | if (status == 0) { |
6665 | if (memcmp(res.session->sess_id.data, | |
6666 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6667 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6668 | status = -EIO; | |
6669 | goto out_session; | |
6670 | } | |
6671 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6672 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6673 | __func__); | |
6674 | status = -EIO; | |
6675 | goto out_session; | |
6676 | } | |
6677 | if (res.use_conn_in_rdma_mode) { | |
6678 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6679 | __func__); | |
6680 | status = -EIO; | |
6681 | goto out_session; | |
6682 | } | |
6683 | } | |
6684 | out_session: | |
6685 | kfree(res.session); | |
6686 | out: | |
6687 | dprintk("<-- %s status= %d\n", __func__, status); | |
6688 | return status; | |
6689 | } | |
6690 | ||
99fe60d0 | 6691 | /* |
fa940720 WAA |
6692 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6693 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6694 | */ |
6695 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6696 | .how = SP4_MACH_CRED, | |
6697 | .enforce.u.words = { | |
6698 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6699 | 1 << (OP_EXCHANGE_ID - 32) | | |
6700 | 1 << (OP_CREATE_SESSION - 32) | | |
6701 | 1 << (OP_DESTROY_SESSION - 32) | | |
6702 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6703 | }, |
6704 | .allow.u.words = { | |
6705 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6706 | 1 << (OP_LOCKU) | |
6707 | 1 << (OP_COMMIT), | |
8b5bee2e | 6708 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6709 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6710 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6711 | 1 << (OP_FREE_STATEID - 32) | |
6712 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6713 | } |
6714 | }; | |
6715 | ||
6716 | /* | |
6717 | * Select the state protection mode for client `clp' given the server results | |
6718 | * from exchange_id in `sp'. | |
99fe60d0 | 6719 | * |
2031cd1a WAA |
6720 | * Returns 0 on success, negative errno otherwise. |
6721 | */ | |
6722 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6723 | struct nfs41_state_protection *sp) | |
6724 | { | |
6725 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6726 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6727 | 1 << (OP_EXCHANGE_ID - 32) | | |
6728 | 1 << (OP_CREATE_SESSION - 32) | | |
6729 | 1 << (OP_DESTROY_SESSION - 32) | | |
6730 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6731 | }; | |
6732 | unsigned int i; | |
6733 | ||
6734 | if (sp->how == SP4_MACH_CRED) { | |
6735 | /* Print state protect result */ | |
6736 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6737 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6738 | if (test_bit(i, sp->enforce.u.longs)) | |
6739 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6740 | if (test_bit(i, sp->allow.u.longs)) | |
6741 | dfprintk(MOUNT, " allow op %d\n", i); | |
6742 | } | |
6743 | ||
6744 | /* make sure nothing is on enforce list that isn't supported */ | |
6745 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6746 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6747 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6748 | return -EINVAL; | |
6749 | } | |
6750 | } | |
6751 | ||
6752 | /* | |
6753 | * Minimal mode - state operations are allowed to use machine | |
6754 | * credential. Note this already happens by default, so the | |
6755 | * client doesn't have to do anything more than the negotiation. | |
6756 | * | |
6757 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6758 | * we're already using the machine cred for exchange_id | |
6759 | * and will never use a different cred. | |
6760 | */ | |
6761 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6762 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6763 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6764 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6765 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6766 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6767 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6768 | } else { | |
6769 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6770 | return -EINVAL; | |
6771 | } | |
fa940720 WAA |
6772 | |
6773 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6774 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6775 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6776 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6777 | } | |
8b5bee2e WAA |
6778 | |
6779 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6780 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6781 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6782 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6783 | } | |
3787d506 WAA |
6784 | |
6785 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6786 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6787 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6788 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6789 | } | |
8c21c62c WAA |
6790 | |
6791 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6792 | dfprintk(MOUNT, " write mode enabled\n"); | |
6793 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6794 | } | |
6795 | ||
6796 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6797 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6798 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6799 | } | |
2031cd1a WAA |
6800 | } |
6801 | ||
6802 | return 0; | |
6803 | } | |
6804 | ||
6805 | /* | |
6806 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6807 | * |
2031cd1a | 6808 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6809 | */ |
2031cd1a WAA |
6810 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6811 | u32 sp4_how) | |
99fe60d0 BH |
6812 | { |
6813 | nfs4_verifier verifier; | |
6814 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6815 | .verifier = &verifier, |
99fe60d0 | 6816 | .client = clp, |
cd3fadec | 6817 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6818 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6819 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6820 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6821 | #else | |
6822 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6823 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6824 | #endif | |
99fe60d0 BH |
6825 | }; |
6826 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6827 | 0 |
99fe60d0 BH |
6828 | }; |
6829 | int status; | |
6830 | struct rpc_message msg = { | |
6831 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6832 | .rpc_argp = &args, | |
6833 | .rpc_resp = &res, | |
6834 | .rpc_cred = cred, | |
6835 | }; | |
99fe60d0 | 6836 | |
f092075d | 6837 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6838 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6839 | sizeof(args.id)); | |
6bbb4ae8 CL |
6840 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6841 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6842 | args.id_len, args.id); | |
99fe60d0 | 6843 | |
acdeb69d | 6844 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6845 | GFP_NOFS); |
acdeb69d | 6846 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6847 | status = -ENOMEM; |
6848 | goto out; | |
6849 | } | |
78fe0f41 | 6850 | |
79d4e1f0 | 6851 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6852 | GFP_NOFS); |
177313f1 | 6853 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6854 | status = -ENOMEM; |
acdeb69d | 6855 | goto out_server_owner; |
abe9a6d5 | 6856 | } |
78fe0f41 | 6857 | |
bbafffd2 | 6858 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6859 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6860 | status = -ENOMEM; |
6861 | goto out_server_scope; | |
6862 | } | |
6863 | ||
2031cd1a WAA |
6864 | switch (sp4_how) { |
6865 | case SP4_NONE: | |
6866 | args.state_protect.how = SP4_NONE; | |
6867 | break; | |
6868 | ||
6869 | case SP4_MACH_CRED: | |
6870 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6871 | break; | |
6872 | ||
6873 | default: | |
6874 | /* unsupported! */ | |
6875 | WARN_ON_ONCE(1); | |
6876 | status = -EINVAL; | |
6877 | goto out_server_scope; | |
6878 | } | |
6879 | ||
1bd714f2 | 6880 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6881 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6882 | if (status == 0) |
32b01310 | 6883 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6884 | |
2031cd1a WAA |
6885 | if (status == 0) |
6886 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6887 | ||
acdeb69d | 6888 | if (status == 0) { |
32b01310 TM |
6889 | clp->cl_clientid = res.clientid; |
6890 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6891 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6892 | clp->cl_seqid = res.seqid; | |
6893 | ||
acdeb69d CL |
6894 | kfree(clp->cl_serverowner); |
6895 | clp->cl_serverowner = res.server_owner; | |
6896 | res.server_owner = NULL; | |
78fe0f41 | 6897 | |
7d2ed9ac | 6898 | /* use the most recent implementation id */ |
59155546 CL |
6899 | kfree(clp->cl_implid); |
6900 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6901 | |
177313f1 | 6902 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6903 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6904 | res.server_scope)) { |
6905 | dprintk("%s: server_scope mismatch detected\n", | |
6906 | __func__); | |
6907 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6908 | kfree(clp->cl_serverscope); |
6909 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6910 | } |
6911 | ||
177313f1 | 6912 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6913 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6914 | goto out; |
6915 | } | |
32b01310 TM |
6916 | } else |
6917 | kfree(res.impl_id); | |
7d2ed9ac | 6918 | |
acdeb69d CL |
6919 | out_server_owner: |
6920 | kfree(res.server_owner); | |
7d2ed9ac | 6921 | out_server_scope: |
abe9a6d5 WAA |
6922 | kfree(res.server_scope); |
6923 | out: | |
177313f1 | 6924 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6925 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6926 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6927 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6928 | clp->cl_implid->date.seconds, |
6929 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6930 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6931 | return status; |
6932 | } | |
6933 | ||
2031cd1a WAA |
6934 | /* |
6935 | * nfs4_proc_exchange_id() | |
6936 | * | |
6937 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6938 | * | |
6939 | * Since the clientid has expired, all compounds using sessions | |
6940 | * associated with the stale clientid will be returning | |
6941 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6942 | * be in some phase of session reset. | |
6943 | * | |
6944 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
6945 | */ | |
6946 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
6947 | { | |
6948 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
6949 | int status; | |
6950 | ||
6951 | /* try SP4_MACH_CRED if krb5i/p */ | |
6952 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
6953 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
6954 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
6955 | if (!status) | |
6956 | return 0; | |
6957 | } | |
6958 | ||
6959 | /* try SP4_NONE */ | |
6960 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
6961 | } | |
6962 | ||
66245539 TM |
6963 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6964 | struct rpc_cred *cred) | |
6965 | { | |
6966 | struct rpc_message msg = { | |
6967 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6968 | .rpc_argp = clp, | |
6969 | .rpc_cred = cred, | |
6970 | }; | |
6971 | int status; | |
6972 | ||
6973 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6974 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6975 | if (status) |
02c67525 | 6976 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6977 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6978 | return status; | |
6979 | } | |
6980 | ||
6981 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6982 | struct rpc_cred *cred) | |
6983 | { | |
6984 | unsigned int loop; | |
6985 | int ret; | |
6986 | ||
6987 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6988 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6989 | switch (ret) { | |
6990 | case -NFS4ERR_DELAY: | |
6991 | case -NFS4ERR_CLIENTID_BUSY: | |
6992 | ssleep(1); | |
6993 | break; | |
6994 | default: | |
6995 | return ret; | |
6996 | } | |
6997 | } | |
6998 | return 0; | |
6999 | } | |
7000 | ||
7001 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7002 | { | |
7003 | struct rpc_cred *cred; | |
7004 | int ret = 0; | |
7005 | ||
7006 | if (clp->cl_mvops->minor_version < 1) | |
7007 | goto out; | |
7008 | if (clp->cl_exchange_flags == 0) | |
7009 | goto out; | |
05f4c350 CL |
7010 | if (clp->cl_preserve_clid) |
7011 | goto out; | |
73d8bde5 | 7012 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7013 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7014 | if (cred) | |
7015 | put_rpccred(cred); | |
7016 | switch (ret) { | |
7017 | case 0: | |
7018 | case -NFS4ERR_STALE_CLIENTID: | |
7019 | clp->cl_exchange_flags = 0; | |
7020 | } | |
7021 | out: | |
7022 | return ret; | |
7023 | } | |
7024 | ||
2050f0cc AA |
7025 | struct nfs4_get_lease_time_data { |
7026 | struct nfs4_get_lease_time_args *args; | |
7027 | struct nfs4_get_lease_time_res *res; | |
7028 | struct nfs_client *clp; | |
7029 | }; | |
7030 | ||
7031 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7032 | void *calldata) | |
7033 | { | |
2050f0cc AA |
7034 | struct nfs4_get_lease_time_data *data = |
7035 | (struct nfs4_get_lease_time_data *)calldata; | |
7036 | ||
7037 | dprintk("--> %s\n", __func__); | |
7038 | /* just setup sequence, do not trigger session recovery | |
7039 | since we're invoked within one */ | |
d9afbd1b TM |
7040 | nfs41_setup_sequence(data->clp->cl_session, |
7041 | &data->args->la_seq_args, | |
7042 | &data->res->lr_seq_res, | |
7043 | task); | |
2050f0cc AA |
7044 | dprintk("<-- %s\n", __func__); |
7045 | } | |
7046 | ||
7047 | /* | |
7048 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7049 | * from sequence operation or clientid errors. | |
7050 | */ | |
7051 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7052 | { | |
7053 | struct nfs4_get_lease_time_data *data = | |
7054 | (struct nfs4_get_lease_time_data *)calldata; | |
7055 | ||
7056 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7057 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7058 | return; | |
2050f0cc AA |
7059 | switch (task->tk_status) { |
7060 | case -NFS4ERR_DELAY: | |
7061 | case -NFS4ERR_GRACE: | |
7062 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7063 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7064 | task->tk_status = 0; | |
a8a4ae3a AA |
7065 | /* fall through */ |
7066 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7067 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7068 | return; |
7069 | } | |
2050f0cc AA |
7070 | dprintk("<-- %s\n", __func__); |
7071 | } | |
7072 | ||
17280175 | 7073 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7074 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7075 | .rpc_call_done = nfs4_get_lease_time_done, | |
7076 | }; | |
7077 | ||
7078 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7079 | { | |
7080 | struct rpc_task *task; | |
7081 | struct nfs4_get_lease_time_args args; | |
7082 | struct nfs4_get_lease_time_res res = { | |
7083 | .lr_fsinfo = fsinfo, | |
7084 | }; | |
7085 | struct nfs4_get_lease_time_data data = { | |
7086 | .args = &args, | |
7087 | .res = &res, | |
7088 | .clp = clp, | |
7089 | }; | |
7090 | struct rpc_message msg = { | |
7091 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7092 | .rpc_argp = &args, | |
7093 | .rpc_resp = &res, | |
7094 | }; | |
7095 | struct rpc_task_setup task_setup = { | |
7096 | .rpc_client = clp->cl_rpcclient, | |
7097 | .rpc_message = &msg, | |
7098 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7099 | .callback_data = &data, |
7100 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7101 | }; |
7102 | int status; | |
7103 | ||
a9c92d6b | 7104 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7105 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7106 | dprintk("--> %s\n", __func__); |
7107 | task = rpc_run_task(&task_setup); | |
7108 | ||
7109 | if (IS_ERR(task)) | |
7110 | status = PTR_ERR(task); | |
7111 | else { | |
7112 | status = task->tk_status; | |
7113 | rpc_put_task(task); | |
7114 | } | |
7115 | dprintk("<-- %s return %d\n", __func__, status); | |
7116 | ||
7117 | return status; | |
7118 | } | |
7119 | ||
fc931582 AA |
7120 | /* |
7121 | * Initialize the values to be used by the client in CREATE_SESSION | |
7122 | * If nfs4_init_session set the fore channel request and response sizes, | |
7123 | * use them. | |
7124 | * | |
7125 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7126 | * always set csa_cachethis to FALSE because the current implementation | |
7127 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7128 | */ | |
7129 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7130 | { | |
18aad3d5 AA |
7131 | unsigned int max_rqst_sz, max_resp_sz; |
7132 | ||
7133 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7134 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7135 | |
fc931582 | 7136 | /* Fore channel attributes */ |
18aad3d5 AA |
7137 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7138 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7139 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7140 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7141 | |
7142 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7143 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7144 | __func__, |
7145 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7146 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7147 | |
7148 | /* Back channel attributes */ | |
fc931582 AA |
7149 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7150 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7151 | args->bc_attrs.max_resp_sz_cached = 0; | |
7152 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
7153 | args->bc_attrs.max_reqs = 1; | |
7154 | ||
7155 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7156 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7157 | __func__, | |
7158 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7159 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7160 | args->bc_attrs.max_reqs); | |
7161 | } | |
7162 | ||
43c2e885 | 7163 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 7164 | { |
43c2e885 BF |
7165 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
7166 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
7167 | ||
43c2e885 BF |
7168 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7169 | return -EINVAL; | |
7170 | /* | |
7171 | * Our requested max_ops is the minimum we need; we're not | |
7172 | * prepared to break up compounds into smaller pieces than that. | |
7173 | * So, no point even trying to continue if the server won't | |
7174 | * cooperate: | |
7175 | */ | |
7176 | if (rcvd->max_ops < sent->max_ops) | |
7177 | return -EINVAL; | |
7178 | if (rcvd->max_reqs == 0) | |
7179 | return -EINVAL; | |
b4b9a0c1 VG |
7180 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7181 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7182 | return 0; |
8d35301d AA |
7183 | } |
7184 | ||
43c2e885 BF |
7185 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
7186 | { | |
7187 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
7188 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 7189 | |
43c2e885 BF |
7190 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7191 | return -EINVAL; | |
7192 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7193 | return -EINVAL; | |
7194 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7195 | return -EINVAL; | |
7196 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7197 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7198 | return -EINVAL; |
b4b9a0c1 | 7199 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
7200 | return -EINVAL; |
7201 | return 0; | |
7202 | } | |
8d35301d | 7203 | |
8d35301d AA |
7204 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
7205 | struct nfs4_session *session) | |
7206 | { | |
43c2e885 | 7207 | int ret; |
8d35301d | 7208 | |
43c2e885 BF |
7209 | ret = nfs4_verify_fore_channel_attrs(args, session); |
7210 | if (ret) | |
7211 | return ret; | |
7212 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
7213 | } |
7214 | ||
848f5bda TM |
7215 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7216 | struct rpc_cred *cred) | |
fc931582 AA |
7217 | { |
7218 | struct nfs4_session *session = clp->cl_session; | |
7219 | struct nfs41_create_session_args args = { | |
7220 | .client = clp, | |
7221 | .cb_program = NFS4_CALLBACK, | |
7222 | }; | |
7223 | struct nfs41_create_session_res res = { | |
7224 | .client = clp, | |
7225 | }; | |
7226 | struct rpc_message msg = { | |
7227 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7228 | .rpc_argp = &args, | |
7229 | .rpc_resp = &res, | |
848f5bda | 7230 | .rpc_cred = cred, |
fc931582 AA |
7231 | }; |
7232 | int status; | |
7233 | ||
7234 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7235 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7236 | |
1bd714f2 | 7237 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7238 | trace_nfs4_create_session(clp, status); |
fc931582 | 7239 | |
43095d39 | 7240 | if (!status) { |
8d35301d AA |
7241 | /* Verify the session's negotiated channel_attrs values */ |
7242 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
7243 | /* Increment the clientid slot sequence id */ |
7244 | clp->cl_seqid++; | |
7245 | } | |
7246 | ||
7247 | return status; | |
7248 | } | |
7249 | ||
7250 | /* | |
7251 | * Issues a CREATE_SESSION operation to the server. | |
7252 | * It is the responsibility of the caller to verify the session is | |
7253 | * expired before calling this routine. | |
7254 | */ | |
848f5bda | 7255 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7256 | { |
7257 | int status; | |
7258 | unsigned *ptr; | |
fc931582 AA |
7259 | struct nfs4_session *session = clp->cl_session; |
7260 | ||
7261 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7262 | ||
848f5bda | 7263 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7264 | if (status) |
7265 | goto out; | |
7266 | ||
aacd5537 AA |
7267 | /* Init or reset the session slot tables */ |
7268 | status = nfs4_setup_session_slot_tables(session); | |
7269 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7270 | if (status) |
7271 | goto out; | |
7272 | ||
7273 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7274 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7275 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7276 | out: |
7277 | dprintk("<-- %s\n", __func__); | |
7278 | return status; | |
7279 | } | |
7280 | ||
0f3e66c6 AA |
7281 | /* |
7282 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7283 | * The caller must serialize access to this routine. | |
7284 | */ | |
848f5bda TM |
7285 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7286 | struct rpc_cred *cred) | |
0f3e66c6 | 7287 | { |
848f5bda TM |
7288 | struct rpc_message msg = { |
7289 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7290 | .rpc_argp = session, | |
7291 | .rpc_cred = cred, | |
7292 | }; | |
0f3e66c6 | 7293 | int status = 0; |
0f3e66c6 AA |
7294 | |
7295 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7296 | ||
7297 | /* session is still being setup */ | |
7298 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
7299 | return status; | |
7300 | ||
1bd714f2 | 7301 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7302 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7303 | |
7304 | if (status) | |
08106ac7 | 7305 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7306 | "Session has been destroyed regardless...\n", status); |
7307 | ||
7308 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7309 | return status; | |
7310 | } | |
7311 | ||
fc01cea9 AA |
7312 | /* |
7313 | * Renew the cl_session lease. | |
7314 | */ | |
d5f8d3fe TM |
7315 | struct nfs4_sequence_data { |
7316 | struct nfs_client *clp; | |
7317 | struct nfs4_sequence_args args; | |
7318 | struct nfs4_sequence_res res; | |
7319 | }; | |
7320 | ||
dc96aef9 AB |
7321 | static void nfs41_sequence_release(void *data) |
7322 | { | |
d5f8d3fe TM |
7323 | struct nfs4_sequence_data *calldata = data; |
7324 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7325 | |
7135840f AB |
7326 | if (atomic_read(&clp->cl_count) > 1) |
7327 | nfs4_schedule_state_renewal(clp); | |
7328 | nfs_put_client(clp); | |
d5f8d3fe | 7329 | kfree(calldata); |
dc96aef9 AB |
7330 | } |
7331 | ||
aa5190d0 TM |
7332 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7333 | { | |
7334 | switch(task->tk_status) { | |
7335 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7336 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7337 | return -EAGAIN; | |
7338 | default: | |
0400a6b0 | 7339 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7340 | } |
7341 | return 0; | |
7342 | } | |
7343 | ||
dc96aef9 | 7344 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7345 | { |
d5f8d3fe TM |
7346 | struct nfs4_sequence_data *calldata = data; |
7347 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7348 | |
14516c3a TM |
7349 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7350 | return; | |
fc01cea9 | 7351 | |
c6d01c6f | 7352 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7353 | if (task->tk_status < 0) { |
7354 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7355 | if (atomic_read(&clp->cl_count) == 1) |
7356 | goto out; | |
fc01cea9 | 7357 | |
aa5190d0 TM |
7358 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7359 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7360 | return; |
7361 | } | |
7362 | } | |
fc01cea9 | 7363 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7364 | out: |
fc01cea9 AA |
7365 | dprintk("<-- %s\n", __func__); |
7366 | } | |
7367 | ||
7368 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7369 | { | |
d5f8d3fe TM |
7370 | struct nfs4_sequence_data *calldata = data; |
7371 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7372 | struct nfs4_sequence_args *args; |
7373 | struct nfs4_sequence_res *res; | |
7374 | ||
fc01cea9 AA |
7375 | args = task->tk_msg.rpc_argp; |
7376 | res = task->tk_msg.rpc_resp; | |
7377 | ||
d9afbd1b | 7378 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7379 | } |
7380 | ||
7381 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7382 | .rpc_call_done = nfs41_sequence_call_done, | |
7383 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7384 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7385 | }; |
7386 | ||
8fe72bac TM |
7387 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7388 | struct rpc_cred *cred, | |
7389 | bool is_privileged) | |
fc01cea9 | 7390 | { |
d5f8d3fe | 7391 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7392 | struct rpc_message msg = { |
7393 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7394 | .rpc_cred = cred, | |
7395 | }; | |
71ac6da9 TM |
7396 | struct rpc_task_setup task_setup_data = { |
7397 | .rpc_client = clp->cl_rpcclient, | |
7398 | .rpc_message = &msg, | |
8fe72bac | 7399 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7400 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7401 | }; |
fc01cea9 | 7402 | |
7135840f | 7403 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7404 | return ERR_PTR(-EIO); |
dfb4f309 | 7405 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7406 | if (calldata == NULL) { |
7135840f | 7407 | nfs_put_client(clp); |
71ac6da9 | 7408 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7409 | } |
a9c92d6b | 7410 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7411 | if (is_privileged) |
7412 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7413 | msg.rpc_argp = &calldata->args; |
7414 | msg.rpc_resp = &calldata->res; | |
7415 | calldata->clp = clp; | |
71ac6da9 | 7416 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7417 | |
71ac6da9 TM |
7418 | return rpc_run_task(&task_setup_data); |
7419 | } | |
7420 | ||
2f60ea6b | 7421 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7422 | { |
7423 | struct rpc_task *task; | |
7424 | int ret = 0; | |
7425 | ||
2f60ea6b | 7426 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7427 | return -EAGAIN; |
8fe72bac | 7428 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7429 | if (IS_ERR(task)) |
7430 | ret = PTR_ERR(task); | |
7431 | else | |
bf294b41 | 7432 | rpc_put_task_async(task); |
71ac6da9 TM |
7433 | dprintk("<-- %s status=%d\n", __func__, ret); |
7434 | return ret; | |
7435 | } | |
7436 | ||
7437 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7438 | { | |
7439 | struct rpc_task *task; | |
7440 | int ret; | |
7441 | ||
8fe72bac | 7442 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7443 | if (IS_ERR(task)) { |
7444 | ret = PTR_ERR(task); | |
7445 | goto out; | |
7446 | } | |
7447 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
7448 | if (!ret) { |
7449 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
7450 | ||
7451 | if (task->tk_status == 0) | |
7452 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 7453 | ret = task->tk_status; |
b4410c2f | 7454 | } |
71ac6da9 TM |
7455 | rpc_put_task(task); |
7456 | out: | |
7457 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7458 | return ret; | |
fc01cea9 AA |
7459 | } |
7460 | ||
fce5c838 RL |
7461 | struct nfs4_reclaim_complete_data { |
7462 | struct nfs_client *clp; | |
7463 | struct nfs41_reclaim_complete_args arg; | |
7464 | struct nfs41_reclaim_complete_res res; | |
7465 | }; | |
7466 | ||
7467 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7468 | { | |
7469 | struct nfs4_reclaim_complete_data *calldata = data; | |
7470 | ||
d9afbd1b TM |
7471 | nfs41_setup_sequence(calldata->clp->cl_session, |
7472 | &calldata->arg.seq_args, | |
7473 | &calldata->res.seq_res, | |
7474 | task); | |
fce5c838 RL |
7475 | } |
7476 | ||
aa5190d0 TM |
7477 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7478 | { | |
7479 | switch(task->tk_status) { | |
7480 | case 0: | |
7481 | case -NFS4ERR_COMPLETE_ALREADY: | |
7482 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7483 | break; | |
7484 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7485 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7486 | /* fall through */ |
7487 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7488 | return -EAGAIN; |
7489 | default: | |
0400a6b0 | 7490 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7491 | } |
7492 | return 0; | |
7493 | } | |
7494 | ||
fce5c838 RL |
7495 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7496 | { | |
7497 | struct nfs4_reclaim_complete_data *calldata = data; | |
7498 | struct nfs_client *clp = calldata->clp; | |
7499 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7500 | ||
7501 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7502 | if (!nfs41_sequence_done(task, res)) |
7503 | return; | |
fce5c838 | 7504 | |
c6d01c6f | 7505 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7506 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7507 | rpc_restart_call_prepare(task); | |
7508 | return; | |
7509 | } | |
fce5c838 RL |
7510 | dprintk("<-- %s\n", __func__); |
7511 | } | |
7512 | ||
7513 | static void nfs4_free_reclaim_complete_data(void *data) | |
7514 | { | |
7515 | struct nfs4_reclaim_complete_data *calldata = data; | |
7516 | ||
7517 | kfree(calldata); | |
7518 | } | |
7519 | ||
7520 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7521 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7522 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7523 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7524 | }; | |
7525 | ||
7526 | /* | |
7527 | * Issue a global reclaim complete. | |
7528 | */ | |
965e9c23 TM |
7529 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7530 | struct rpc_cred *cred) | |
fce5c838 RL |
7531 | { |
7532 | struct nfs4_reclaim_complete_data *calldata; | |
7533 | struct rpc_task *task; | |
7534 | struct rpc_message msg = { | |
7535 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7536 | .rpc_cred = cred, |
fce5c838 RL |
7537 | }; |
7538 | struct rpc_task_setup task_setup_data = { | |
7539 | .rpc_client = clp->cl_rpcclient, | |
7540 | .rpc_message = &msg, | |
7541 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7542 | .flags = RPC_TASK_ASYNC, | |
7543 | }; | |
7544 | int status = -ENOMEM; | |
7545 | ||
7546 | dprintk("--> %s\n", __func__); | |
8535b2be | 7547 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7548 | if (calldata == NULL) |
7549 | goto out; | |
7550 | calldata->clp = clp; | |
7551 | calldata->arg.one_fs = 0; | |
fce5c838 | 7552 | |
a9c92d6b | 7553 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7554 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7555 | msg.rpc_argp = &calldata->arg; |
7556 | msg.rpc_resp = &calldata->res; | |
7557 | task_setup_data.callback_data = calldata; | |
7558 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7559 | if (IS_ERR(task)) { |
fce5c838 | 7560 | status = PTR_ERR(task); |
acf82b85 DC |
7561 | goto out; |
7562 | } | |
c34c32ea AA |
7563 | status = nfs4_wait_for_completion_rpc_task(task); |
7564 | if (status == 0) | |
7565 | status = task->tk_status; | |
fce5c838 | 7566 | rpc_put_task(task); |
acf82b85 | 7567 | return 0; |
fce5c838 RL |
7568 | out: |
7569 | dprintk("<-- %s status=%d\n", __func__, status); | |
7570 | return status; | |
7571 | } | |
b1f69b75 AA |
7572 | |
7573 | static void | |
7574 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7575 | { | |
7576 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7577 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7578 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7579 | |
7580 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7581 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7582 | * right now covering the LAYOUTGET we are about to send. | |
7583 | * However, that is not so catastrophic, and there seems | |
7584 | * to be no way to prevent it completely. | |
7585 | */ | |
6ba7db34 | 7586 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7587 | &lgp->res.seq_res, task)) |
b1f69b75 | 7588 | return; |
cf7d63f1 FI |
7589 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7590 | NFS_I(lgp->args.inode)->layout, | |
7591 | lgp->args.ctx->state)) { | |
7592 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7593 | } |
b1f69b75 AA |
7594 | } |
7595 | ||
7596 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7597 | { | |
7598 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7599 | struct inode *inode = lgp->args.inode; |
7600 | struct nfs_server *server = NFS_SERVER(inode); | |
7601 | struct pnfs_layout_hdr *lo; | |
7602 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7603 | unsigned long timeo, now, giveup; |
b1f69b75 | 7604 | |
ed7e5423 | 7605 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7606 | |
6ba7db34 | 7607 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7608 | goto out; |
b1f69b75 AA |
7609 | |
7610 | switch (task->tk_status) { | |
7611 | case 0: | |
ee314c2a | 7612 | goto out; |
ed7e5423 BH |
7613 | /* |
7614 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
7615 | * (or clients) writing to the same RAID stripe | |
7616 | */ | |
b1f69b75 | 7617 | case -NFS4ERR_LAYOUTTRYLATER: |
ed7e5423 BH |
7618 | /* |
7619 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7620 | * existing layout before getting a new one). | |
7621 | */ | |
b1f69b75 | 7622 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7623 | timeo = rpc_get_timeout(task->tk_client); |
7624 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7625 | now = jiffies; |
7626 | if (time_after(giveup, now)) { | |
7627 | unsigned long delay; | |
7628 | ||
7629 | /* Delay for: | |
7630 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7631 | * - One last time a jiffie before we give up | |
7632 | * - exponential backoff (time_now minus start_attempt) | |
7633 | */ | |
7634 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7635 | min((giveup - now - 1), | |
7636 | now - lgp->args.timestamp)); | |
7637 | ||
7638 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7639 | __func__, delay); | |
7640 | rpc_delay(task, delay); | |
7641 | task->tk_status = 0; | |
7642 | rpc_restart_call_prepare(task); | |
7643 | goto out; /* Do not call nfs4_async_handle_error() */ | |
7644 | } | |
ee314c2a TM |
7645 | break; |
7646 | case -NFS4ERR_EXPIRED: | |
7647 | case -NFS4ERR_BAD_STATEID: | |
7648 | spin_lock(&inode->i_lock); | |
7649 | lo = NFS_I(inode)->layout; | |
7650 | if (!lo || list_empty(&lo->plh_segs)) { | |
7651 | spin_unlock(&inode->i_lock); | |
7652 | /* If the open stateid was bad, then recover it. */ | |
7653 | state = lgp->args.ctx->state; | |
7654 | } else { | |
7655 | LIST_HEAD(head); | |
7656 | ||
defb8460 CH |
7657 | /* |
7658 | * Mark the bad layout state as invalid, then retry | |
7659 | * with the current stateid. | |
7660 | */ | |
ee314c2a TM |
7661 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7662 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7663 | pnfs_free_lseg_list(&head); |
defb8460 CH |
7664 | |
7665 | task->tk_status = 0; | |
7666 | rpc_restart_call_prepare(task); | |
b1f69b75 AA |
7667 | } |
7668 | } | |
8478eaa1 | 7669 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) |
ee314c2a TM |
7670 | rpc_restart_call_prepare(task); |
7671 | out: | |
b1f69b75 AA |
7672 | dprintk("<-- %s\n", __func__); |
7673 | } | |
7674 | ||
8554116e IK |
7675 | static size_t max_response_pages(struct nfs_server *server) |
7676 | { | |
7677 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7678 | return nfs_page_array_len(0, max_resp_sz); | |
7679 | } | |
7680 | ||
7681 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7682 | { | |
7683 | int i; | |
7684 | ||
7685 | if (!pages) | |
7686 | return; | |
7687 | ||
7688 | for (i = 0; i < size; i++) { | |
7689 | if (!pages[i]) | |
7690 | break; | |
7691 | __free_page(pages[i]); | |
7692 | } | |
7693 | kfree(pages); | |
7694 | } | |
7695 | ||
7696 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7697 | { | |
7698 | struct page **pages; | |
7699 | int i; | |
7700 | ||
7701 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7702 | if (!pages) { | |
7703 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7704 | return NULL; | |
7705 | } | |
7706 | ||
7707 | for (i = 0; i < size; i++) { | |
7708 | pages[i] = alloc_page(gfp_flags); | |
7709 | if (!pages[i]) { | |
7710 | dprintk("%s: failed to allocate page\n", __func__); | |
7711 | nfs4_free_pages(pages, size); | |
7712 | return NULL; | |
7713 | } | |
7714 | } | |
7715 | ||
7716 | return pages; | |
7717 | } | |
7718 | ||
b1f69b75 AA |
7719 | static void nfs4_layoutget_release(void *calldata) |
7720 | { | |
7721 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7722 | struct inode *inode = lgp->args.inode; |
7723 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7724 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7725 | |
7726 | dprintk("--> %s\n", __func__); | |
8554116e | 7727 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7728 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7729 | put_nfs_open_context(lgp->args.ctx); |
7730 | kfree(calldata); | |
7731 | dprintk("<-- %s\n", __func__); | |
7732 | } | |
7733 | ||
7734 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7735 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7736 | .rpc_call_done = nfs4_layoutget_done, | |
7737 | .rpc_release = nfs4_layoutget_release, | |
7738 | }; | |
7739 | ||
a0b0a6e3 TM |
7740 | struct pnfs_layout_segment * |
7741 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7742 | { |
a47970ff WAA |
7743 | struct inode *inode = lgp->args.inode; |
7744 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7745 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7746 | struct rpc_task *task; |
7747 | struct rpc_message msg = { | |
7748 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7749 | .rpc_argp = &lgp->args, | |
7750 | .rpc_resp = &lgp->res, | |
6ab59344 | 7751 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7752 | }; |
7753 | struct rpc_task_setup task_setup_data = { | |
7754 | .rpc_client = server->client, | |
7755 | .rpc_message = &msg, | |
7756 | .callback_ops = &nfs4_layoutget_call_ops, | |
7757 | .callback_data = lgp, | |
7758 | .flags = RPC_TASK_ASYNC, | |
7759 | }; | |
a0b0a6e3 | 7760 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7761 | int status = 0; |
7762 | ||
7763 | dprintk("--> %s\n", __func__); | |
7764 | ||
4bd5a980 PT |
7765 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
7766 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7767 | ||
8554116e IK |
7768 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7769 | if (!lgp->args.layout.pages) { | |
7770 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7771 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7772 | } |
7773 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7774 | lgp->args.timestamp = jiffies; |
8554116e | 7775 | |
35124a09 | 7776 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7777 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7778 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 7779 | |
b1f69b75 AA |
7780 | task = rpc_run_task(&task_setup_data); |
7781 | if (IS_ERR(task)) | |
a0b0a6e3 | 7782 | return ERR_CAST(task); |
b1f69b75 | 7783 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7784 | if (status == 0) |
7785 | status = task->tk_status; | |
1037e6ea TM |
7786 | trace_nfs4_layoutget(lgp->args.ctx, |
7787 | &lgp->args.range, | |
7788 | &lgp->res.range, | |
7789 | status); | |
085b7a45 WAA |
7790 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7791 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7792 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7793 | rpc_put_task(task); |
7794 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7795 | if (status) |
7796 | return ERR_PTR(status); | |
7797 | return lseg; | |
b1f69b75 AA |
7798 | } |
7799 | ||
cbe82603 BH |
7800 | static void |
7801 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7802 | { | |
7803 | struct nfs4_layoutreturn *lrp = calldata; | |
7804 | ||
7805 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7806 | nfs41_setup_sequence(lrp->clp->cl_session, |
7807 | &lrp->args.seq_args, | |
7808 | &lrp->res.seq_res, | |
7809 | task); | |
cbe82603 BH |
7810 | } |
7811 | ||
7812 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7813 | { | |
7814 | struct nfs4_layoutreturn *lrp = calldata; | |
7815 | struct nfs_server *server; | |
7816 | ||
7817 | dprintk("--> %s\n", __func__); | |
7818 | ||
6ba7db34 | 7819 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7820 | return; |
7821 | ||
7822 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
7823 | switch (task->tk_status) { |
7824 | default: | |
7825 | task->tk_status = 0; | |
7826 | case 0: | |
7827 | break; | |
7828 | case -NFS4ERR_DELAY: | |
8478eaa1 | 7829 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 7830 | break; |
d00c5d43 | 7831 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7832 | return; |
7833 | } | |
cbe82603 BH |
7834 | dprintk("<-- %s\n", __func__); |
7835 | } | |
7836 | ||
7837 | static void nfs4_layoutreturn_release(void *calldata) | |
7838 | { | |
7839 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7840 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7841 | |
7842 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7843 | spin_lock(&lo->plh_inode->i_lock); |
7844 | if (lrp->res.lrs_present) | |
7845 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7846 | lo->plh_block_lgets--; | |
7847 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7848 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7849 | kfree(calldata); |
7850 | dprintk("<-- %s\n", __func__); | |
7851 | } | |
7852 | ||
7853 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7854 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7855 | .rpc_call_done = nfs4_layoutreturn_done, | |
7856 | .rpc_release = nfs4_layoutreturn_release, | |
7857 | }; | |
7858 | ||
7859 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7860 | { | |
7861 | struct rpc_task *task; | |
7862 | struct rpc_message msg = { | |
7863 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7864 | .rpc_argp = &lrp->args, | |
7865 | .rpc_resp = &lrp->res, | |
9556000d | 7866 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7867 | }; |
7868 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7869 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7870 | .rpc_message = &msg, |
7871 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7872 | .callback_data = lrp, | |
7873 | }; | |
7874 | int status; | |
7875 | ||
7876 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7877 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7878 | task = rpc_run_task(&task_setup_data); |
7879 | if (IS_ERR(task)) | |
7880 | return PTR_ERR(task); | |
7881 | status = task->tk_status; | |
1037e6ea | 7882 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7883 | dprintk("<-- %s status=%d\n", __func__, status); |
7884 | rpc_put_task(task); | |
7885 | return status; | |
7886 | } | |
7887 | ||
b1f69b75 | 7888 | static int |
cd5875fe TM |
7889 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7890 | struct pnfs_device *pdev, | |
7891 | struct rpc_cred *cred) | |
b1f69b75 AA |
7892 | { |
7893 | struct nfs4_getdeviceinfo_args args = { | |
7894 | .pdev = pdev, | |
7895 | }; | |
7896 | struct nfs4_getdeviceinfo_res res = { | |
7897 | .pdev = pdev, | |
7898 | }; | |
7899 | struct rpc_message msg = { | |
7900 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7901 | .rpc_argp = &args, | |
7902 | .rpc_resp = &res, | |
cd5875fe | 7903 | .rpc_cred = cred, |
b1f69b75 AA |
7904 | }; |
7905 | int status; | |
7906 | ||
7907 | dprintk("--> %s\n", __func__); | |
7c513058 | 7908 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7909 | dprintk("<-- %s status=%d\n", __func__, status); |
7910 | ||
7911 | return status; | |
7912 | } | |
7913 | ||
cd5875fe TM |
7914 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7915 | struct pnfs_device *pdev, | |
7916 | struct rpc_cred *cred) | |
b1f69b75 AA |
7917 | { |
7918 | struct nfs4_exception exception = { }; | |
7919 | int err; | |
7920 | ||
7921 | do { | |
7922 | err = nfs4_handle_exception(server, | |
cd5875fe | 7923 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7924 | &exception); |
7925 | } while (exception.retry); | |
7926 | return err; | |
7927 | } | |
7928 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7929 | ||
863a3c6c AA |
7930 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7931 | { | |
7932 | struct nfs4_layoutcommit_data *data = calldata; | |
7933 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7934 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7935 | |
d9afbd1b TM |
7936 | nfs41_setup_sequence(session, |
7937 | &data->args.seq_args, | |
7938 | &data->res.seq_res, | |
7939 | task); | |
863a3c6c AA |
7940 | } |
7941 | ||
7942 | static void | |
7943 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7944 | { | |
7945 | struct nfs4_layoutcommit_data *data = calldata; | |
7946 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7947 | ||
6ba7db34 | 7948 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7949 | return; |
7950 | ||
7951 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7952 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7953 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7954 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7955 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7956 | task->tk_status = 0; |
e59d27e0 | 7957 | case 0: |
e59d27e0 TM |
7958 | break; |
7959 | default: | |
8478eaa1 | 7960 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
7961 | rpc_restart_call_prepare(task); |
7962 | return; | |
7963 | } | |
7964 | } | |
863a3c6c AA |
7965 | } |
7966 | ||
7967 | static void nfs4_layoutcommit_release(void *calldata) | |
7968 | { | |
7969 | struct nfs4_layoutcommit_data *data = calldata; | |
7970 | ||
db29c089 | 7971 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
7972 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7973 | data->res.fattr); | |
863a3c6c AA |
7974 | put_rpccred(data->cred); |
7975 | kfree(data); | |
7976 | } | |
7977 | ||
7978 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7979 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7980 | .rpc_call_done = nfs4_layoutcommit_done, | |
7981 | .rpc_release = nfs4_layoutcommit_release, | |
7982 | }; | |
7983 | ||
7984 | int | |
ef311537 | 7985 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7986 | { |
7987 | struct rpc_message msg = { | |
7988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7989 | .rpc_argp = &data->args, | |
7990 | .rpc_resp = &data->res, | |
7991 | .rpc_cred = data->cred, | |
7992 | }; | |
7993 | struct rpc_task_setup task_setup_data = { | |
7994 | .task = &data->task, | |
7995 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7996 | .rpc_message = &msg, | |
7997 | .callback_ops = &nfs4_layoutcommit_ops, | |
7998 | .callback_data = data, | |
7999 | .flags = RPC_TASK_ASYNC, | |
8000 | }; | |
8001 | struct rpc_task *task; | |
8002 | int status = 0; | |
8003 | ||
8004 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
8005 | "lbw: %llu inode %lu\n", | |
8006 | data->task.tk_pid, sync, | |
8007 | data->args.lastbytewritten, | |
8008 | data->args.inode->i_ino); | |
8009 | ||
a9c92d6b | 8010 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8011 | task = rpc_run_task(&task_setup_data); |
8012 | if (IS_ERR(task)) | |
8013 | return PTR_ERR(task); | |
ef311537 | 8014 | if (sync == false) |
863a3c6c AA |
8015 | goto out; |
8016 | status = nfs4_wait_for_completion_rpc_task(task); | |
8017 | if (status != 0) | |
8018 | goto out; | |
8019 | status = task->tk_status; | |
1037e6ea | 8020 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
8021 | out: |
8022 | dprintk("%s: status %d\n", __func__, status); | |
8023 | rpc_put_task(task); | |
8024 | return status; | |
8025 | } | |
fca78d6d | 8026 | |
97431204 AA |
8027 | /** |
8028 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8029 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8030 | */ | |
fca78d6d BS |
8031 | static int |
8032 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8033 | struct nfs_fsinfo *info, |
8034 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8035 | { |
8036 | struct nfs41_secinfo_no_name_args args = { | |
8037 | .style = SECINFO_STYLE_CURRENT_FH, | |
8038 | }; | |
8039 | struct nfs4_secinfo_res res = { | |
8040 | .flavors = flavors, | |
8041 | }; | |
8042 | struct rpc_message msg = { | |
8043 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8044 | .rpc_argp = &args, | |
8045 | .rpc_resp = &res, | |
8046 | }; | |
b1b3e136 | 8047 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8048 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8049 | int status; |
8050 | ||
8051 | if (use_integrity) { | |
8052 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8053 | cred = nfs4_get_clid_cred(server->nfs_client); |
8054 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8055 | } |
8056 | ||
8057 | dprintk("--> %s\n", __func__); | |
8058 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8059 | &res.seq_res, 0); | |
8060 | dprintk("<-- %s status=%d\n", __func__, status); | |
8061 | ||
7cb852df WAA |
8062 | if (cred) |
8063 | put_rpccred(cred); | |
b1b3e136 WAA |
8064 | |
8065 | return status; | |
fca78d6d BS |
8066 | } |
8067 | ||
8068 | static int | |
8069 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8070 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8071 | { | |
8072 | struct nfs4_exception exception = { }; | |
8073 | int err; | |
8074 | do { | |
b1b3e136 WAA |
8075 | /* first try using integrity protection */ |
8076 | err = -NFS4ERR_WRONGSEC; | |
8077 | ||
8078 | /* try to use integrity protection with machine cred */ | |
8079 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8080 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8081 | flavors, true); | |
8082 | ||
8083 | /* | |
8084 | * if unable to use integrity protection, or SECINFO with | |
8085 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8086 | * disallowed by spec, but exists in deployed servers) use | |
8087 | * the current filesystem's rpc_client and the user cred. | |
8088 | */ | |
8089 | if (err == -NFS4ERR_WRONGSEC) | |
8090 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8091 | flavors, false); | |
8092 | ||
fca78d6d BS |
8093 | switch (err) { |
8094 | case 0: | |
8095 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8096 | case -ENOTSUPP: |
05e9cfb4 | 8097 | goto out; |
fca78d6d BS |
8098 | default: |
8099 | err = nfs4_handle_exception(server, err, &exception); | |
8100 | } | |
8101 | } while (exception.retry); | |
05e9cfb4 | 8102 | out: |
fca78d6d BS |
8103 | return err; |
8104 | } | |
8105 | ||
8106 | static int | |
8107 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8108 | struct nfs_fsinfo *info) | |
8109 | { | |
8110 | int err; | |
8111 | struct page *page; | |
367156d9 | 8112 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8113 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8114 | struct nfs4_secinfo4 *secinfo; |
8115 | int i; | |
fca78d6d BS |
8116 | |
8117 | page = alloc_page(GFP_KERNEL); | |
8118 | if (!page) { | |
8119 | err = -ENOMEM; | |
8120 | goto out; | |
8121 | } | |
8122 | ||
8123 | flavors = page_address(page); | |
8124 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8125 | ||
8126 | /* | |
8127 | * Fall back on "guess and check" method if | |
8128 | * the server doesn't support SECINFO_NO_NAME | |
8129 | */ | |
78b19bae | 8130 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8131 | err = nfs4_find_root_sec(server, fhandle, info); |
8132 | goto out_freepage; | |
8133 | } | |
8134 | if (err) | |
8135 | goto out_freepage; | |
8136 | ||
58a8cf12 WAA |
8137 | for (i = 0; i < flavors->num_flavors; i++) { |
8138 | secinfo = &flavors->flavors[i]; | |
8139 | ||
8140 | switch (secinfo->flavor) { | |
8141 | case RPC_AUTH_NULL: | |
8142 | case RPC_AUTH_UNIX: | |
8143 | case RPC_AUTH_GSS: | |
8144 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8145 | &secinfo->flavor_info); | |
8146 | break; | |
8147 | default: | |
8148 | flavor = RPC_AUTH_MAXFLAVOR; | |
8149 | break; | |
8150 | } | |
8151 | ||
4d4b69dd WAA |
8152 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8153 | flavor = RPC_AUTH_MAXFLAVOR; | |
8154 | ||
58a8cf12 WAA |
8155 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8156 | err = nfs4_lookup_root_sec(server, fhandle, | |
8157 | info, flavor); | |
8158 | if (!err) | |
8159 | break; | |
8160 | } | |
8161 | } | |
8162 | ||
8163 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8164 | err = -EPERM; | |
fca78d6d BS |
8165 | |
8166 | out_freepage: | |
8167 | put_page(page); | |
8168 | if (err == -EACCES) | |
8169 | return -EPERM; | |
8170 | out: | |
8171 | return err; | |
8172 | } | |
1cab0652 | 8173 | |
ab7cb0df TM |
8174 | static int _nfs41_test_stateid(struct nfs_server *server, |
8175 | nfs4_stateid *stateid, | |
8176 | struct rpc_cred *cred) | |
7d974794 BS |
8177 | { |
8178 | int status; | |
8179 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8180 | .stateid = stateid, |
7d974794 BS |
8181 | }; |
8182 | struct nfs41_test_stateid_res res; | |
8183 | struct rpc_message msg = { | |
8184 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8185 | .rpc_argp = &args, | |
8186 | .rpc_resp = &res, | |
ab7cb0df | 8187 | .rpc_cred = cred, |
7d974794 | 8188 | }; |
3787d506 WAA |
8189 | struct rpc_clnt *rpc_client = server->client; |
8190 | ||
8191 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8192 | &rpc_client, &msg); | |
1cab0652 | 8193 | |
38527b15 | 8194 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8195 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8196 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8197 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8198 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8199 | if (status != NFS_OK) { |
8200 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8201 | return status; |
38527b15 CL |
8202 | } |
8203 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8204 | return -res.status; |
7d974794 BS |
8205 | } |
8206 | ||
38527b15 CL |
8207 | /** |
8208 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8209 | * | |
8210 | * @server: server / transport on which to perform the operation | |
8211 | * @stateid: state ID to test | |
ab7cb0df | 8212 | * @cred: credential |
38527b15 CL |
8213 | * |
8214 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8215 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8216 | * failed or the state ID is not currently valid. | |
8217 | */ | |
ab7cb0df TM |
8218 | static int nfs41_test_stateid(struct nfs_server *server, |
8219 | nfs4_stateid *stateid, | |
8220 | struct rpc_cred *cred) | |
7d974794 BS |
8221 | { |
8222 | struct nfs4_exception exception = { }; | |
8223 | int err; | |
8224 | do { | |
ab7cb0df | 8225 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8226 | if (err != -NFS4ERR_DELAY) |
8227 | break; | |
8228 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8229 | } while (exception.retry); |
8230 | return err; | |
8231 | } | |
9aeda35f | 8232 | |
7c1d5fae TM |
8233 | struct nfs_free_stateid_data { |
8234 | struct nfs_server *server; | |
8235 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8236 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8237 | }; |
8238 | ||
8239 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8240 | { | |
8241 | struct nfs_free_stateid_data *data = calldata; | |
8242 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8243 | &data->args.seq_args, | |
8244 | &data->res.seq_res, | |
8245 | task); | |
8246 | } | |
8247 | ||
8248 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8249 | { | |
8250 | struct nfs_free_stateid_data *data = calldata; | |
8251 | ||
8252 | nfs41_sequence_done(task, &data->res.seq_res); | |
8253 | ||
8254 | switch (task->tk_status) { | |
8255 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8256 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8257 | rpc_restart_call_prepare(task); |
8258 | } | |
8259 | } | |
8260 | ||
8261 | static void nfs41_free_stateid_release(void *calldata) | |
8262 | { | |
8263 | kfree(calldata); | |
8264 | } | |
8265 | ||
17f26b12 | 8266 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8267 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8268 | .rpc_call_done = nfs41_free_stateid_done, | |
8269 | .rpc_release = nfs41_free_stateid_release, | |
8270 | }; | |
8271 | ||
8272 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8273 | nfs4_stateid *stateid, | |
ab7cb0df | 8274 | struct rpc_cred *cred, |
7c1d5fae TM |
8275 | bool privileged) |
8276 | { | |
9aeda35f BS |
8277 | struct rpc_message msg = { |
8278 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8279 | .rpc_cred = cred, |
9aeda35f | 8280 | }; |
7c1d5fae TM |
8281 | struct rpc_task_setup task_setup = { |
8282 | .rpc_client = server->client, | |
8283 | .rpc_message = &msg, | |
8284 | .callback_ops = &nfs41_free_stateid_ops, | |
8285 | .flags = RPC_TASK_ASYNC, | |
8286 | }; | |
8287 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8288 | |
3787d506 WAA |
8289 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8290 | &task_setup.rpc_client, &msg); | |
8291 | ||
38527b15 | 8292 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8293 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8294 | if (!data) | |
8295 | return ERR_PTR(-ENOMEM); | |
8296 | data->server = server; | |
8297 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8298 | ||
8299 | task_setup.callback_data = data; | |
8300 | ||
8301 | msg.rpc_argp = &data->args; | |
8302 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8303 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8304 | if (privileged) |
8305 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8306 | ||
8307 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8308 | } |
8309 | ||
38527b15 CL |
8310 | /** |
8311 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8312 | * | |
8313 | * @server: server / transport on which to perform the operation | |
8314 | * @stateid: state ID to release | |
ab7cb0df | 8315 | * @cred: credential |
38527b15 CL |
8316 | * |
8317 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8318 | * negative NFS4ERR value is returned. | |
8319 | */ | |
ab7cb0df TM |
8320 | static int nfs41_free_stateid(struct nfs_server *server, |
8321 | nfs4_stateid *stateid, | |
8322 | struct rpc_cred *cred) | |
9aeda35f | 8323 | { |
7c1d5fae TM |
8324 | struct rpc_task *task; |
8325 | int ret; | |
8326 | ||
ab7cb0df | 8327 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8328 | if (IS_ERR(task)) |
8329 | return PTR_ERR(task); | |
8330 | ret = rpc_wait_for_completion_task(task); | |
8331 | if (!ret) | |
8332 | ret = task->tk_status; | |
8333 | rpc_put_task(task); | |
8334 | return ret; | |
9aeda35f | 8335 | } |
36281caa | 8336 | |
f1cdae87 JL |
8337 | static void |
8338 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8339 | { |
8340 | struct rpc_task *task; | |
ab7cb0df | 8341 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8342 | |
ab7cb0df | 8343 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8344 | nfs4_free_lock_state(server, lsp); |
8345 | if (IS_ERR(task)) | |
f1cdae87 | 8346 | return; |
c8b2d0bf | 8347 | rpc_put_task(task); |
c8b2d0bf TM |
8348 | } |
8349 | ||
36281caa TM |
8350 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8351 | const nfs4_stateid *s2) | |
8352 | { | |
2d2f24ad | 8353 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8354 | return false; |
8355 | ||
2d2f24ad | 8356 | if (s1->seqid == s2->seqid) |
36281caa | 8357 | return true; |
2d2f24ad | 8358 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8359 | return true; |
8360 | ||
8361 | return false; | |
8362 | } | |
8363 | ||
557134a3 AA |
8364 | #endif /* CONFIG_NFS_V4_1 */ |
8365 | ||
36281caa TM |
8366 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8367 | const nfs4_stateid *s2) | |
8368 | { | |
f597c537 | 8369 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8370 | } |
8371 | ||
8372 | ||
17280175 | 8373 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8374 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8375 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8376 | .recover_open = nfs4_open_reclaim, |
8377 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8378 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8379 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8380 | }; |
8381 | ||
591d71cb | 8382 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8383 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8384 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8385 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8386 | .recover_open = nfs4_open_reclaim, | |
8387 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8388 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8389 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8390 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8391 | }; |
8392 | #endif /* CONFIG_NFS_V4_1 */ | |
8393 | ||
17280175 | 8394 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8395 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8396 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8397 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8398 | .recover_lock = nfs4_lock_expired, |
8399 | .establish_clid = nfs4_init_clientid, | |
8400 | }; | |
8401 | ||
8402 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8403 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8404 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8405 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8406 | .recover_open = nfs41_open_expired, |
8407 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8408 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8409 | }; |
591d71cb | 8410 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8411 | |
17280175 | 8412 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8413 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8414 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8415 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8416 | }; |
8417 | ||
8418 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8419 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8420 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8421 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8422 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8423 | }; |
8424 | #endif | |
8425 | ||
ec011fe8 | 8426 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8427 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8428 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8429 | }; |
8430 | ||
8431 | #if defined(CONFIG_NFS_V4_1) | |
8432 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8433 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8434 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8435 | }; |
8436 | #endif /* CONFIG_NFS_V4_1 */ | |
8437 | ||
97dc1359 TM |
8438 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8439 | .minor_version = 0, | |
39c6daae TM |
8440 | .init_caps = NFS_CAP_READDIRPLUS |
8441 | | NFS_CAP_ATOMIC_OPEN | |
8442 | | NFS_CAP_CHANGE_ATTR | |
8443 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
8444 | .init_client = nfs40_init_client, |
8445 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8446 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8447 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8448 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8449 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8450 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8451 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8452 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8453 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8454 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8455 | }; |
8456 | ||
8457 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8458 | static struct nfs_seqid * |
8459 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8460 | { | |
8461 | return NULL; | |
8462 | } | |
8463 | ||
97dc1359 TM |
8464 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8465 | .minor_version = 1, | |
39c6daae TM |
8466 | .init_caps = NFS_CAP_READDIRPLUS |
8467 | | NFS_CAP_ATOMIC_OPEN | |
8468 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 8469 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8470 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8471 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8472 | .init_client = nfs41_init_client, |
8473 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8474 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8475 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8476 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8477 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8478 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8479 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8480 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8481 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8482 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8483 | }; |
8484 | #endif | |
8485 | ||
42c2c424 SD |
8486 | #if defined(CONFIG_NFS_V4_2) |
8487 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8488 | .minor_version = 2, | |
7017310a BS |
8489 | .init_caps = NFS_CAP_READDIRPLUS |
8490 | | NFS_CAP_ATOMIC_OPEN | |
8491 | | NFS_CAP_CHANGE_ATTR | |
8492 | | NFS_CAP_POSIX_LOCK | |
8493 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8494 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8495 | | NFS_CAP_ALLOCATE |
624bd5b7 | 8496 | | NFS_CAP_DEALLOCATE |
e983120e | 8497 | | NFS_CAP_SEEK, |
abf79bb3 CL |
8498 | .init_client = nfs41_init_client, |
8499 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8500 | .match_stateid = nfs41_match_stateid, |
8501 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8502 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8503 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8504 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8505 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8506 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8507 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
8508 | }; | |
8509 | #endif | |
8510 | ||
97dc1359 TM |
8511 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8512 | [0] = &nfs_v4_0_minor_ops, | |
8513 | #if defined(CONFIG_NFS_V4_1) | |
8514 | [1] = &nfs_v4_1_minor_ops, | |
8515 | #endif | |
42c2c424 SD |
8516 | #if defined(CONFIG_NFS_V4_2) |
8517 | [2] = &nfs_v4_2_minor_ops, | |
8518 | #endif | |
97dc1359 TM |
8519 | }; |
8520 | ||
17f26b12 | 8521 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8522 | .create = nfs_create, |
8523 | .lookup = nfs_lookup, | |
8524 | .atomic_open = nfs_atomic_open, | |
8525 | .link = nfs_link, | |
8526 | .unlink = nfs_unlink, | |
8527 | .symlink = nfs_symlink, | |
8528 | .mkdir = nfs_mkdir, | |
8529 | .rmdir = nfs_rmdir, | |
8530 | .mknod = nfs_mknod, | |
8531 | .rename = nfs_rename, | |
8532 | .permission = nfs_permission, | |
8533 | .getattr = nfs_getattr, | |
8534 | .setattr = nfs_setattr, | |
8535 | .getxattr = generic_getxattr, | |
8536 | .setxattr = generic_setxattr, | |
8537 | .listxattr = generic_listxattr, | |
8538 | .removexattr = generic_removexattr, | |
8539 | }; | |
8540 | ||
92e1d5be | 8541 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8542 | .permission = nfs_permission, |
8543 | .getattr = nfs_getattr, | |
8544 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8545 | .getxattr = generic_getxattr, |
8546 | .setxattr = generic_setxattr, | |
8547 | .listxattr = generic_listxattr, | |
8548 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8549 | }; |
8550 | ||
509de811 | 8551 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8552 | .version = 4, /* protocol version */ |
8553 | .dentry_ops = &nfs4_dentry_operations, | |
8554 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8555 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8556 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8557 | .getroot = nfs4_proc_get_root, |
281cad46 | 8558 | .submount = nfs4_submount, |
ff9099f2 | 8559 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8560 | .getattr = nfs4_proc_getattr, |
8561 | .setattr = nfs4_proc_setattr, | |
8562 | .lookup = nfs4_proc_lookup, | |
8563 | .access = nfs4_proc_access, | |
8564 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8565 | .create = nfs4_proc_create, |
8566 | .remove = nfs4_proc_remove, | |
8567 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8568 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8569 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8570 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8571 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8572 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8573 | .link = nfs4_proc_link, |
8574 | .symlink = nfs4_proc_symlink, | |
8575 | .mkdir = nfs4_proc_mkdir, | |
8576 | .rmdir = nfs4_proc_remove, | |
8577 | .readdir = nfs4_proc_readdir, | |
8578 | .mknod = nfs4_proc_mknod, | |
8579 | .statfs = nfs4_proc_statfs, | |
8580 | .fsinfo = nfs4_proc_fsinfo, | |
8581 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8582 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8583 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8584 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8585 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8586 | .read_done = nfs4_read_done, |
1da177e4 | 8587 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8588 | .write_done = nfs4_write_done, |
1da177e4 | 8589 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8590 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8591 | .commit_done = nfs4_commit_done, |
1da177e4 | 8592 | .lock = nfs4_proc_lock, |
e50a1c2e | 8593 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8594 | .close_context = nfs4_close_context, |
2b484297 | 8595 | .open_context = nfs4_atomic_open, |
011e2a7f | 8596 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8597 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8598 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8599 | .init_client = nfs4_init_client, |
cdb7eced | 8600 | .free_client = nfs4_free_client, |
1179acc6 BS |
8601 | .create_server = nfs4_create_server, |
8602 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8603 | }; |
8604 | ||
64c2ce8b AK |
8605 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8606 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8607 | .list = nfs4_xattr_list_nfs4_acl, | |
8608 | .get = nfs4_xattr_get_nfs4_acl, | |
8609 | .set = nfs4_xattr_set_nfs4_acl, | |
8610 | }; | |
8611 | ||
8612 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8613 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8614 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8615 | &nfs4_xattr_nfs4_label_handler, | |
8616 | #endif | |
64c2ce8b AK |
8617 | NULL |
8618 | }; | |
8619 | ||
1da177e4 LT |
8620 | /* |
8621 | * Local variables: | |
8622 | * c-basic-offset: 8 | |
8623 | * End: | |
8624 | */ |