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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 | 68 | |
c6d01c6f TM |
69 | #include "nfs4trace.h" |
70 | ||
1da177e4 LT |
71 | #define NFSDBG_FACILITY NFSDBG_PROC |
72 | ||
2066fe89 | 73 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
74 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
75 | ||
cdd4e68b | 76 | struct nfs4_opendata; |
864472e9 | 77 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 78 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 79 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 80 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 81 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
82 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
86 | struct nfs4_state *state, struct nfs4_label *ilabel, |
87 | struct nfs4_label *olabel); | |
f062eb6c | 88 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
89 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
90 | struct rpc_cred *); | |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
92 | struct rpc_cred *); | |
f062eb6c | 93 | #endif |
aa9c2669 DQ |
94 | |
95 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
96 | static inline struct nfs4_label * | |
97 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
98 | struct iattr *sattr, struct nfs4_label *label) | |
99 | { | |
100 | int err; | |
101 | ||
102 | if (label == NULL) | |
103 | return NULL; | |
104 | ||
105 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
106 | return NULL; | |
107 | ||
aa9c2669 DQ |
108 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
109 | &dentry->d_name, (void **)&label->label, &label->len); | |
110 | if (err == 0) | |
111 | return label; | |
112 | ||
113 | return NULL; | |
114 | } | |
115 | static inline void | |
116 | nfs4_label_release_security(struct nfs4_label *label) | |
117 | { | |
118 | if (label) | |
119 | security_release_secctx(label->label, label->len); | |
120 | } | |
121 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
122 | { | |
123 | if (label) | |
124 | return server->attr_bitmask; | |
125 | ||
126 | return server->attr_bitmask_nl; | |
127 | } | |
128 | #else | |
129 | static inline struct nfs4_label * | |
130 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
131 | struct iattr *sattr, struct nfs4_label *l) | |
132 | { return NULL; } | |
133 | static inline void | |
134 | nfs4_label_release_security(struct nfs4_label *label) | |
135 | { return; } | |
136 | static inline u32 * | |
137 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
138 | { return server->attr_bitmask; } | |
139 | #endif | |
140 | ||
1da177e4 | 141 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 142 | static int nfs4_map_errors(int err) |
1da177e4 | 143 | { |
52567b03 TM |
144 | if (err >= -1000) |
145 | return err; | |
146 | switch (err) { | |
147 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
148 | case -NFS4ERR_LAYOUTTRYLATER: |
149 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 150 | return -EREMOTEIO; |
7ebb9315 | 151 | case -NFS4ERR_WRONGSEC: |
8897538e | 152 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 153 | return -EPERM; |
3ddeb7c5 TM |
154 | case -NFS4ERR_BADOWNER: |
155 | case -NFS4ERR_BADNAME: | |
156 | return -EINVAL; | |
fb13bfa7 TM |
157 | case -NFS4ERR_SHARE_DENIED: |
158 | return -EACCES; | |
f25efd85 SD |
159 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
160 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
161 | case -NFS4ERR_ACCESS: |
162 | return -EACCES; | |
6e3cf241 TM |
163 | case -NFS4ERR_FILE_OPEN: |
164 | return -EBUSY; | |
52567b03 | 165 | default: |
1da177e4 | 166 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 167 | __func__, -err); |
52567b03 | 168 | break; |
1da177e4 | 169 | } |
52567b03 | 170 | return -EIO; |
1da177e4 LT |
171 | } |
172 | ||
173 | /* | |
174 | * This is our standard bitmap for GETATTR requests. | |
175 | */ | |
1549210f | 176 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
177 | FATTR4_WORD0_TYPE |
178 | | FATTR4_WORD0_CHANGE | |
179 | | FATTR4_WORD0_SIZE | |
180 | | FATTR4_WORD0_FSID | |
181 | | FATTR4_WORD0_FILEID, | |
182 | FATTR4_WORD1_MODE | |
183 | | FATTR4_WORD1_NUMLINKS | |
184 | | FATTR4_WORD1_OWNER | |
185 | | FATTR4_WORD1_OWNER_GROUP | |
186 | | FATTR4_WORD1_RAWDEV | |
187 | | FATTR4_WORD1_SPACE_USED | |
188 | | FATTR4_WORD1_TIME_ACCESS | |
189 | | FATTR4_WORD1_TIME_METADATA | |
aa9c2669 DQ |
190 | | FATTR4_WORD1_TIME_MODIFY, |
191 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
192 | FATTR4_WORD2_SECURITY_LABEL | |
193 | #endif | |
1da177e4 LT |
194 | }; |
195 | ||
1549210f TM |
196 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
197 | FATTR4_WORD0_TYPE | |
198 | | FATTR4_WORD0_CHANGE | |
199 | | FATTR4_WORD0_SIZE | |
200 | | FATTR4_WORD0_FSID | |
201 | | FATTR4_WORD0_FILEID, | |
202 | FATTR4_WORD1_MODE | |
203 | | FATTR4_WORD1_NUMLINKS | |
204 | | FATTR4_WORD1_OWNER | |
205 | | FATTR4_WORD1_OWNER_GROUP | |
206 | | FATTR4_WORD1_RAWDEV | |
207 | | FATTR4_WORD1_SPACE_USED | |
208 | | FATTR4_WORD1_TIME_ACCESS | |
209 | | FATTR4_WORD1_TIME_METADATA | |
210 | | FATTR4_WORD1_TIME_MODIFY, | |
211 | FATTR4_WORD2_MDSTHRESHOLD | |
212 | }; | |
213 | ||
e23008ec AA |
214 | static const u32 nfs4_open_noattr_bitmap[3] = { |
215 | FATTR4_WORD0_TYPE | |
216 | | FATTR4_WORD0_CHANGE | |
217 | | FATTR4_WORD0_FILEID, | |
218 | }; | |
219 | ||
a09df2ca | 220 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
221 | FATTR4_WORD0_FILES_AVAIL |
222 | | FATTR4_WORD0_FILES_FREE | |
223 | | FATTR4_WORD0_FILES_TOTAL, | |
224 | FATTR4_WORD1_SPACE_AVAIL | |
225 | | FATTR4_WORD1_SPACE_FREE | |
226 | | FATTR4_WORD1_SPACE_TOTAL | |
227 | }; | |
228 | ||
a09df2ca | 229 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
230 | FATTR4_WORD0_MAXLINK |
231 | | FATTR4_WORD0_MAXNAME, | |
232 | 0 | |
233 | }; | |
234 | ||
dae100c2 | 235 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
236 | | FATTR4_WORD0_MAXREAD |
237 | | FATTR4_WORD0_MAXWRITE | |
238 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 239 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
240 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
241 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
242 | }; |
243 | ||
a09df2ca | 244 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
245 | FATTR4_WORD0_TYPE |
246 | | FATTR4_WORD0_CHANGE | |
247 | | FATTR4_WORD0_SIZE | |
248 | | FATTR4_WORD0_FSID | |
249 | | FATTR4_WORD0_FILEID | |
250 | | FATTR4_WORD0_FS_LOCATIONS, | |
251 | FATTR4_WORD1_MODE | |
252 | | FATTR4_WORD1_NUMLINKS | |
253 | | FATTR4_WORD1_OWNER | |
254 | | FATTR4_WORD1_OWNER_GROUP | |
255 | | FATTR4_WORD1_RAWDEV | |
256 | | FATTR4_WORD1_SPACE_USED | |
257 | | FATTR4_WORD1_TIME_ACCESS | |
258 | | FATTR4_WORD1_TIME_METADATA | |
259 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 260 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
261 | }; |
262 | ||
bc4785cd | 263 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
264 | struct nfs4_readdir_arg *readdir) |
265 | { | |
0dbb4c67 | 266 | __be32 *start, *p; |
1da177e4 | 267 | |
1da177e4 | 268 | if (cookie > 2) { |
b7ef1956 | 269 | readdir->cookie = cookie; |
1da177e4 LT |
270 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
271 | return; | |
272 | } | |
273 | ||
274 | readdir->cookie = 0; | |
275 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
276 | if (cookie == 2) | |
277 | return; | |
278 | ||
279 | /* | |
280 | * NFSv4 servers do not return entries for '.' and '..' | |
281 | * Therefore, we fake these entries here. We let '.' | |
282 | * have cookie 0 and '..' have cookie 1. Note that | |
283 | * when talking to the server, we always send cookie 0 | |
284 | * instead of 1 or 2. | |
285 | */ | |
2b86ce2d | 286 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
287 | |
288 | if (cookie == 0) { | |
289 | *p++ = xdr_one; /* next */ | |
290 | *p++ = xdr_zero; /* cookie, first word */ | |
291 | *p++ = xdr_one; /* cookie, second word */ | |
292 | *p++ = xdr_one; /* entry len */ | |
293 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
294 | p++; | |
295 | *p++ = xdr_one; /* bitmap length */ | |
296 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
297 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 298 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
299 | } |
300 | ||
301 | *p++ = xdr_one; /* next */ | |
302 | *p++ = xdr_zero; /* cookie, first word */ | |
303 | *p++ = xdr_two; /* cookie, second word */ | |
304 | *p++ = xdr_two; /* entry len */ | |
305 | memcpy(p, "..\0\0", 4); /* entry */ | |
306 | p++; | |
307 | *p++ = xdr_one; /* bitmap length */ | |
308 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
309 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 310 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
311 | |
312 | readdir->pgbase = (char *)p - (char *)start; | |
313 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 314 | kunmap_atomic(start); |
1da177e4 LT |
315 | } |
316 | ||
65de872e TM |
317 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
318 | { | |
319 | int res = 0; | |
320 | ||
321 | might_sleep(); | |
322 | ||
323 | if (*timeout <= 0) | |
324 | *timeout = NFS4_POLL_RETRY_MIN; | |
325 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
326 | *timeout = NFS4_POLL_RETRY_MAX; | |
416ad3c9 | 327 | freezable_schedule_timeout_killable_unsafe(*timeout); |
65de872e TM |
328 | if (fatal_signal_pending(current)) |
329 | res = -ERESTARTSYS; | |
330 | *timeout <<= 1; | |
331 | return res; | |
332 | } | |
333 | ||
334 | /* This is the error handling routine for processes that are allowed | |
335 | * to sleep. | |
336 | */ | |
b064eca2 | 337 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
338 | { |
339 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 340 | struct nfs4_state *state = exception->state; |
3114ea7a | 341 | struct inode *inode = exception->inode; |
65de872e TM |
342 | int ret = errorcode; |
343 | ||
344 | exception->retry = 0; | |
345 | switch(errorcode) { | |
346 | case 0: | |
347 | return 0; | |
3114ea7a | 348 | case -NFS4ERR_OPENMODE: |
011e2a7f | 349 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 350 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
351 | exception->retry = 1; |
352 | return 0; | |
353 | } | |
354 | if (state == NULL) | |
355 | break; | |
5d422301 TM |
356 | ret = nfs4_schedule_stateid_recovery(server, state); |
357 | if (ret < 0) | |
358 | break; | |
3114ea7a | 359 | goto wait_on_recovery; |
a1d0b5ee | 360 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
361 | case -NFS4ERR_ADMIN_REVOKED: |
362 | case -NFS4ERR_BAD_STATEID: | |
b570a975 TM |
363 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
364 | nfs_remove_bad_delegation(inode); | |
365 | exception->retry = 1; | |
366 | break; | |
367 | } | |
9e33bed5 TM |
368 | if (state == NULL) |
369 | break; | |
5d422301 TM |
370 | ret = nfs4_schedule_stateid_recovery(server, state); |
371 | if (ret < 0) | |
372 | break; | |
0400a6b0 | 373 | goto wait_on_recovery; |
0ced63d1 | 374 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
375 | if (state != NULL) { |
376 | ret = nfs4_schedule_stateid_recovery(server, state); | |
377 | if (ret < 0) | |
378 | break; | |
379 | } | |
65de872e | 380 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 381 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
382 | nfs4_schedule_lease_recovery(clp); |
383 | goto wait_on_recovery; | |
519ae255 CL |
384 | case -NFS4ERR_MOVED: |
385 | ret = nfs4_schedule_migration_recovery(server); | |
386 | if (ret < 0) | |
387 | break; | |
388 | goto wait_on_recovery; | |
8ef2f8d4 CL |
389 | case -NFS4ERR_LEASE_MOVED: |
390 | nfs4_schedule_lease_moved_recovery(clp); | |
391 | goto wait_on_recovery; | |
03391693 | 392 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
393 | case -NFS4ERR_BADSESSION: |
394 | case -NFS4ERR_BADSLOT: | |
395 | case -NFS4ERR_BAD_HIGH_SLOT: | |
396 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
397 | case -NFS4ERR_DEADSESSION: | |
398 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
399 | case -NFS4ERR_SEQ_MISORDERED: | |
400 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
401 | errorcode); | |
9f594791 | 402 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 403 | goto wait_on_recovery; |
03391693 | 404 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 405 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
406 | if (exception->timeout > HZ) { |
407 | /* We have retried a decent amount, time to | |
408 | * fail | |
409 | */ | |
410 | ret = -EBUSY; | |
411 | break; | |
412 | } | |
65de872e TM |
413 | case -NFS4ERR_GRACE: |
414 | case -NFS4ERR_DELAY: | |
415 | ret = nfs4_delay(server->client, &exception->timeout); | |
416 | if (ret != 0) | |
417 | break; | |
a8a4ae3a | 418 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
419 | case -NFS4ERR_OLD_STATEID: |
420 | exception->retry = 1; | |
b064eca2 TM |
421 | break; |
422 | case -NFS4ERR_BADOWNER: | |
423 | /* The following works around a Linux server bug! */ | |
424 | case -NFS4ERR_BADNAME: | |
425 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
426 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
427 | exception->retry = 1; | |
428 | printk(KERN_WARNING "NFS: v4 server %s " | |
429 | "does not accept raw " | |
430 | "uid/gids. " | |
431 | "Reenabling the idmapper.\n", | |
432 | server->nfs_client->cl_hostname); | |
433 | } | |
65de872e TM |
434 | } |
435 | /* We failed to handle the error */ | |
436 | return nfs4_map_errors(ret); | |
0400a6b0 | 437 | wait_on_recovery: |
a2c0b9e2 | 438 | ret = nfs4_wait_clnt_recover(clp); |
519ae255 CL |
439 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
440 | return -EIO; | |
a2c0b9e2 TM |
441 | if (ret == 0) |
442 | exception->retry = 1; | |
443 | return ret; | |
65de872e TM |
444 | } |
445 | ||
a5250def WAA |
446 | /* |
447 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
448 | * or 'false' otherwise. | |
449 | */ | |
450 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
451 | { | |
452 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
453 | ||
454 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
455 | flavor == RPC_AUTH_GSS_KRB5P) | |
456 | return true; | |
457 | ||
458 | return false; | |
459 | } | |
65de872e | 460 | |
452e9352 | 461 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 462 | { |
1da177e4 LT |
463 | spin_lock(&clp->cl_lock); |
464 | if (time_before(clp->cl_last_renewal,timestamp)) | |
465 | clp->cl_last_renewal = timestamp; | |
466 | spin_unlock(&clp->cl_lock); | |
467 | } | |
468 | ||
452e9352 TM |
469 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
470 | { | |
471 | do_renew_lease(server->nfs_client, timestamp); | |
472 | } | |
473 | ||
2a3eb2b9 CL |
474 | struct nfs4_call_sync_data { |
475 | const struct nfs_server *seq_server; | |
476 | struct nfs4_sequence_args *seq_args; | |
477 | struct nfs4_sequence_res *seq_res; | |
478 | }; | |
479 | ||
a9c92d6b CL |
480 | static void nfs4_init_sequence(struct nfs4_sequence_args *args, |
481 | struct nfs4_sequence_res *res, int cache_reply) | |
482 | { | |
483 | args->sa_slot = NULL; | |
484 | args->sa_cache_this = cache_reply; | |
485 | args->sa_privileged = 0; | |
486 | ||
487 | res->sr_slot = NULL; | |
488 | } | |
489 | ||
490 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
491 | { | |
492 | args->sa_privileged = 1; | |
493 | } | |
494 | ||
3bd2384a CL |
495 | static int nfs40_setup_sequence(const struct nfs_server *server, |
496 | struct nfs4_sequence_args *args, | |
497 | struct nfs4_sequence_res *res, | |
498 | struct rpc_task *task) | |
499 | { | |
500 | struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl; | |
501 | struct nfs4_slot *slot; | |
502 | ||
503 | /* slot already allocated? */ | |
504 | if (res->sr_slot != NULL) | |
505 | goto out_start; | |
506 | ||
507 | spin_lock(&tbl->slot_tbl_lock); | |
508 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
509 | goto out_sleep; | |
510 | ||
511 | slot = nfs4_alloc_slot(tbl); | |
512 | if (IS_ERR(slot)) { | |
513 | if (slot == ERR_PTR(-ENOMEM)) | |
514 | task->tk_timeout = HZ >> 2; | |
515 | goto out_sleep; | |
516 | } | |
517 | spin_unlock(&tbl->slot_tbl_lock); | |
518 | ||
519 | args->sa_slot = slot; | |
520 | res->sr_slot = slot; | |
521 | ||
522 | out_start: | |
523 | rpc_call_start(task); | |
524 | return 0; | |
525 | ||
526 | out_sleep: | |
527 | if (args->sa_privileged) | |
528 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
529 | NULL, RPC_PRIORITY_PRIVILEGED); | |
530 | else | |
531 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
532 | spin_unlock(&tbl->slot_tbl_lock); | |
533 | return -EAGAIN; | |
534 | } | |
535 | ||
536 | static int nfs40_sequence_done(struct rpc_task *task, | |
537 | struct nfs4_sequence_res *res) | |
538 | { | |
539 | struct nfs4_slot *slot = res->sr_slot; | |
540 | struct nfs4_slot_table *tbl; | |
541 | ||
cab92c19 | 542 | if (slot == NULL) |
3bd2384a CL |
543 | goto out; |
544 | ||
545 | tbl = slot->table; | |
546 | spin_lock(&tbl->slot_tbl_lock); | |
547 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
548 | nfs4_free_slot(tbl, slot); | |
549 | spin_unlock(&tbl->slot_tbl_lock); | |
550 | ||
551 | res->sr_slot = NULL; | |
552 | out: | |
553 | return 1; | |
554 | } | |
555 | ||
cccef3b9 AA |
556 | #if defined(CONFIG_NFS_V4_1) |
557 | ||
d185a334 | 558 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 559 | { |
e3725ec0 | 560 | struct nfs4_session *session; |
13615871 | 561 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 562 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 563 | bool send_new_highest_used_slotid = false; |
13615871 | 564 | |
a13ce7c6 | 565 | tbl = slot->table; |
e3725ec0 | 566 | session = tbl->session; |
ea028ac9 | 567 | |
35dc1d74 | 568 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
569 | /* Be nice to the server: try to ensure that the last transmitted |
570 | * value for highest_user_slotid <= target_highest_slotid | |
571 | */ | |
572 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
573 | send_new_highest_used_slotid = true; | |
574 | ||
a13ce7c6 | 575 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
576 | send_new_highest_used_slotid = false; |
577 | goto out_unlock; | |
578 | } | |
a13ce7c6 | 579 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
580 | |
581 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
582 | send_new_highest_used_slotid = false; | |
b75ad4cd | 583 | out_unlock: |
35dc1d74 | 584 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 585 | res->sr_slot = NULL; |
c10e4498 TM |
586 | if (send_new_highest_used_slotid) |
587 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
588 | } |
589 | ||
f9c96fcc | 590 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 591 | { |
e3725ec0 | 592 | struct nfs4_session *session; |
a13ce7c6 | 593 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 594 | struct nfs_client *clp; |
ac20d163 | 595 | bool interrupted = false; |
85563073 | 596 | int ret = 1; |
b0df806c | 597 | |
a13ce7c6 TM |
598 | if (slot == NULL) |
599 | goto out_noaction; | |
468f8613 BS |
600 | /* don't increment the sequence number if the task wasn't sent */ |
601 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
602 | goto out; |
603 | ||
e3725ec0 | 604 | session = slot->table->session; |
933602e3 | 605 | |
ac20d163 TM |
606 | if (slot->interrupted) { |
607 | slot->interrupted = 0; | |
608 | interrupted = true; | |
609 | } | |
610 | ||
2f92ae34 | 611 | trace_nfs4_sequence_done(session, res); |
691daf3b | 612 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
613 | switch (res->sr_status) { |
614 | case 0: | |
b0df806c | 615 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 616 | ++slot->seq_nr; |
e3725ec0 | 617 | clp = session->clp; |
8e63b6a8 | 618 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 619 | /* Check sequence flags */ |
b4410c2f TM |
620 | if (res->sr_status_flags != 0) |
621 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 622 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 623 | break; |
ac20d163 TM |
624 | case 1: |
625 | /* | |
626 | * sr_status remains 1 if an RPC level error occurred. | |
627 | * The server may or may not have processed the sequence | |
628 | * operation.. | |
629 | * Mark the slot as having hosted an interrupted RPC call. | |
630 | */ | |
631 | slot->interrupted = 1; | |
632 | goto out; | |
14516c3a TM |
633 | case -NFS4ERR_DELAY: |
634 | /* The server detected a resend of the RPC call and | |
635 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
636 | * of RFC5661. | |
637 | */ | |
df2fabff | 638 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 639 | __func__, |
df2fabff | 640 | slot->slot_nr, |
933602e3 | 641 | slot->seq_nr); |
14516c3a | 642 | goto out_retry; |
85563073 TM |
643 | case -NFS4ERR_BADSLOT: |
644 | /* | |
645 | * The slot id we used was probably retired. Try again | |
646 | * using a different slot id. | |
647 | */ | |
e8794440 TM |
648 | goto retry_nowait; |
649 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
650 | /* |
651 | * Was the last operation on this sequence interrupted? | |
652 | * If so, retry after bumping the sequence number. | |
653 | */ | |
654 | if (interrupted) { | |
655 | ++slot->seq_nr; | |
656 | goto retry_nowait; | |
657 | } | |
e8794440 TM |
658 | /* |
659 | * Could this slot have been previously retired? | |
660 | * If so, then the server may be expecting seq_nr = 1! | |
661 | */ | |
8e63b6a8 TM |
662 | if (slot->seq_nr != 1) { |
663 | slot->seq_nr = 1; | |
664 | goto retry_nowait; | |
665 | } | |
666 | break; | |
e8794440 TM |
667 | case -NFS4ERR_SEQ_FALSE_RETRY: |
668 | ++slot->seq_nr; | |
669 | goto retry_nowait; | |
14516c3a TM |
670 | default: |
671 | /* Just update the slot sequence no. */ | |
933602e3 | 672 | ++slot->seq_nr; |
b0df806c AA |
673 | } |
674 | out: | |
675 | /* The session may be reset by one of the error handlers. */ | |
676 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 677 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 678 | out_noaction: |
85563073 | 679 | return ret; |
e8794440 TM |
680 | retry_nowait: |
681 | if (rpc_restart_call_prepare(task)) { | |
682 | task->tk_status = 0; | |
683 | ret = 0; | |
684 | } | |
685 | goto out; | |
14516c3a | 686 | out_retry: |
d05dd4e9 | 687 | if (!rpc_restart_call(task)) |
14516c3a TM |
688 | goto out; |
689 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
690 | return 0; | |
b0df806c | 691 | } |
f9c96fcc | 692 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 693 | |
14516c3a TM |
694 | static int nfs4_sequence_done(struct rpc_task *task, |
695 | struct nfs4_sequence_res *res) | |
df896455 | 696 | { |
e3725ec0 | 697 | if (res->sr_slot == NULL) |
14516c3a | 698 | return 1; |
3bd2384a CL |
699 | if (!res->sr_slot->table->session) |
700 | return nfs40_sequence_done(task, res); | |
14516c3a | 701 | return nfs41_sequence_done(task, res); |
df896455 TM |
702 | } |
703 | ||
dc70d7b3 | 704 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
705 | struct nfs4_sequence_args *args, |
706 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
707 | struct rpc_task *task) |
708 | { | |
fbcd4abc AA |
709 | struct nfs4_slot *slot; |
710 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
711 | |
712 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 713 | /* slot already allocated? */ |
dfb4f309 | 714 | if (res->sr_slot != NULL) |
d9afbd1b | 715 | goto out_success; |
ce5039c1 | 716 | |
fbcd4abc AA |
717 | tbl = &session->fc_slot_table; |
718 | ||
69d206b5 TM |
719 | task->tk_timeout = 0; |
720 | ||
fbcd4abc | 721 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 722 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 723 | !args->sa_privileged) { |
0b1c8fc4 | 724 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 725 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 726 | goto out_sleep; |
689cf5c1 AB |
727 | } |
728 | ||
2dc03b7f | 729 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
730 | if (IS_ERR(slot)) { |
731 | /* If out of memory, try again in 1/4 second */ | |
732 | if (slot == ERR_PTR(-ENOMEM)) | |
733 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 734 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 735 | goto out_sleep; |
fbcd4abc AA |
736 | } |
737 | spin_unlock(&tbl->slot_tbl_lock); | |
738 | ||
2b2fa717 | 739 | args->sa_slot = slot; |
fbcd4abc | 740 | |
e8d92382 | 741 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 742 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 743 | |
dfb4f309 | 744 | res->sr_slot = slot; |
8e63b6a8 | 745 | res->sr_timestamp = jiffies; |
2a6e26cd | 746 | res->sr_status_flags = 0; |
fbcd4abc AA |
747 | /* |
748 | * sr_status is only set in decode_sequence, and so will remain | |
749 | * set to 1 if an rpc level failure occurs. | |
750 | */ | |
751 | res->sr_status = 1; | |
2f92ae34 | 752 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
753 | out_success: |
754 | rpc_call_start(task); | |
ce5039c1 | 755 | return 0; |
7b939a3f | 756 | out_sleep: |
8fe72bac TM |
757 | /* Privileged tasks are queued with top priority */ |
758 | if (args->sa_privileged) | |
1e1093c7 TM |
759 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
760 | NULL, RPC_PRIORITY_PRIVILEGED); | |
761 | else | |
762 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
763 | spin_unlock(&tbl->slot_tbl_lock); |
764 | return -EAGAIN; | |
ce5039c1 | 765 | } |
dc70d7b3 | 766 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 767 | |
5a580e0a CL |
768 | static int nfs4_setup_sequence(const struct nfs_server *server, |
769 | struct nfs4_sequence_args *args, | |
770 | struct nfs4_sequence_res *res, | |
771 | struct rpc_task *task) | |
ce5039c1 | 772 | { |
035168ab | 773 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
774 | int ret = 0; |
775 | ||
3bd2384a CL |
776 | if (!session) |
777 | return nfs40_setup_sequence(server, args, res, task); | |
035168ab | 778 | |
e8d92382 | 779 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 780 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 781 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 782 | |
9d12b216 | 783 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 784 | |
ce5039c1 AA |
785 | dprintk("<-- %s status=%d\n", __func__, ret); |
786 | return ret; | |
787 | } | |
788 | ||
ce5039c1 AA |
789 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
790 | { | |
2a3eb2b9 | 791 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 792 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 793 | |
035168ab TM |
794 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
795 | ||
d9afbd1b | 796 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
797 | } |
798 | ||
69ab40c4 AA |
799 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
800 | { | |
2a3eb2b9 | 801 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 802 | |
14516c3a | 803 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
804 | } |
805 | ||
17280175 | 806 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 807 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 808 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
809 | }; |
810 | ||
3bd2384a CL |
811 | #else /* !CONFIG_NFS_V4_1 */ |
812 | ||
9915ea7e CL |
813 | static int nfs4_setup_sequence(const struct nfs_server *server, |
814 | struct nfs4_sequence_args *args, | |
815 | struct nfs4_sequence_res *res, | |
816 | struct rpc_task *task) | |
817 | { | |
3bd2384a | 818 | return nfs40_setup_sequence(server, args, res, task); |
9915ea7e CL |
819 | } |
820 | ||
821 | static int nfs4_sequence_done(struct rpc_task *task, | |
822 | struct nfs4_sequence_res *res) | |
823 | { | |
3bd2384a | 824 | return nfs40_sequence_done(task, res); |
9915ea7e | 825 | } |
3bd2384a CL |
826 | |
827 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
828 | |
829 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
830 | { | |
831 | struct nfs4_call_sync_data *data = calldata; | |
832 | nfs4_setup_sequence(data->seq_server, | |
833 | data->seq_args, data->seq_res, task); | |
834 | } | |
835 | ||
836 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
837 | { | |
838 | struct nfs4_call_sync_data *data = calldata; | |
839 | nfs4_sequence_done(task, data->seq_res); | |
840 | } | |
841 | ||
842 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
843 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
844 | .rpc_call_done = nfs40_call_sync_done, | |
845 | }; | |
846 | ||
7c513058 BS |
847 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
848 | struct nfs_server *server, | |
ce5039c1 AA |
849 | struct rpc_message *msg, |
850 | struct nfs4_sequence_args *args, | |
8fe72bac | 851 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
852 | { |
853 | int ret; | |
854 | struct rpc_task *task; | |
9915ea7e | 855 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 856 | struct nfs4_call_sync_data data = { |
035168ab | 857 | .seq_server = server, |
ce5039c1 AA |
858 | .seq_args = args, |
859 | .seq_res = res, | |
ce5039c1 AA |
860 | }; |
861 | struct rpc_task_setup task_setup = { | |
7c513058 | 862 | .rpc_client = clnt, |
ce5039c1 | 863 | .rpc_message = msg, |
9915ea7e | 864 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
865 | .callback_data = &data |
866 | }; | |
867 | ||
ce5039c1 AA |
868 | task = rpc_run_task(&task_setup); |
869 | if (IS_ERR(task)) | |
870 | ret = PTR_ERR(task); | |
871 | else { | |
872 | ret = task->tk_status; | |
873 | rpc_put_task(task); | |
874 | } | |
875 | return ret; | |
876 | } | |
877 | ||
fd0c0953 | 878 | static |
7c513058 BS |
879 | int nfs4_call_sync(struct rpc_clnt *clnt, |
880 | struct nfs_server *server, | |
e73b83f2 BS |
881 | struct rpc_message *msg, |
882 | struct nfs4_sequence_args *args, | |
883 | struct nfs4_sequence_res *res, | |
884 | int cache_reply) | |
885 | { | |
a9c92d6b | 886 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 887 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 888 | } |
cccef3b9 | 889 | |
38478b24 | 890 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 891 | { |
38478b24 | 892 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 893 | |
38478b24 | 894 | spin_lock(&dir->i_lock); |
359d7d1c | 895 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 896 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 897 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 898 | dir->i_version = cinfo->after; |
de242c0b | 899 | nfs_fscache_invalidate(dir); |
38478b24 | 900 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
901 | } |
902 | ||
e56e0b78 | 903 | struct nfs4_opendata { |
c6d00e63 | 904 | struct kref kref; |
e56e0b78 TM |
905 | struct nfs_openargs o_arg; |
906 | struct nfs_openres o_res; | |
cdd4e68b TM |
907 | struct nfs_open_confirmargs c_arg; |
908 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
909 | struct nfs4_string owner_name; |
910 | struct nfs4_string group_name; | |
e56e0b78 | 911 | struct nfs_fattr f_attr; |
1775fd3e | 912 | struct nfs4_label *f_label; |
e56e0b78 | 913 | struct dentry *dir; |
82a2c1b7 | 914 | struct dentry *dentry; |
e56e0b78 | 915 | struct nfs4_state_owner *owner; |
aac00a8d | 916 | struct nfs4_state *state; |
e56e0b78 | 917 | struct iattr attrs; |
26e976a8 | 918 | unsigned long timestamp; |
3e309914 | 919 | unsigned int rpc_done : 1; |
5bc2afc2 | 920 | unsigned int file_created : 1; |
bdeca1b7 | 921 | unsigned int is_recover : 1; |
24ac23ab TM |
922 | int rpc_status; |
923 | int cancelled; | |
e56e0b78 TM |
924 | }; |
925 | ||
49f9a0fa TM |
926 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
927 | int err, struct nfs4_exception *exception) | |
928 | { | |
929 | if (err != -EINVAL) | |
930 | return false; | |
931 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
932 | return false; | |
933 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
934 | exception->retry = 1; | |
935 | return true; | |
936 | } | |
937 | ||
938 | static enum open_claim_type4 | |
939 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
940 | enum open_claim_type4 claim) | |
941 | { | |
942 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
943 | return claim; | |
944 | switch (claim) { | |
945 | default: | |
946 | return claim; | |
947 | case NFS4_OPEN_CLAIM_FH: | |
948 | return NFS4_OPEN_CLAIM_NULL; | |
949 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
950 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
951 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
952 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
953 | } | |
954 | } | |
2ced46c2 TM |
955 | |
956 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
957 | { | |
958 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 959 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
960 | p->o_res.seqid = p->o_arg.seqid; |
961 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 962 | p->o_res.server = p->o_arg.server; |
5f657530 | 963 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 964 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 965 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
966 | } |
967 | ||
82a2c1b7 | 968 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 969 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 970 | const struct iattr *attrs, |
1775fd3e | 971 | struct nfs4_label *label, |
4a1c0893 | 972 | enum open_claim_type4 claim, |
8535b2be | 973 | gfp_t gfp_mask) |
e56e0b78 | 974 | { |
82a2c1b7 | 975 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
976 | struct inode *dir = parent->d_inode; |
977 | struct nfs_server *server = NFS_SERVER(dir); | |
978 | struct nfs4_opendata *p; | |
979 | ||
8535b2be | 980 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
981 | if (p == NULL) |
982 | goto err; | |
14c43f76 DQ |
983 | |
984 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
985 | if (IS_ERR(p->f_label)) | |
986 | goto err_free_p; | |
987 | ||
8535b2be | 988 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 | 989 | if (p->o_arg.seqid == NULL) |
14c43f76 | 990 | goto err_free_label; |
82a2c1b7 AV |
991 | nfs_sb_active(dentry->d_sb); |
992 | p->dentry = dget(dentry); | |
e56e0b78 TM |
993 | p->dir = parent; |
994 | p->owner = sp; | |
995 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
996 | p->o_arg.open_flags = flags; |
997 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
998 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
999 | * will return permission denied for all bits until close */ | |
1000 | if (!(flags & O_EXCL)) { | |
1001 | /* ask server to check for all possible rights as results | |
1002 | * are cached */ | |
1003 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1004 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1005 | } |
7539bbab | 1006 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1007 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1008 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1009 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1010 | p->o_arg.server = server; |
aa9c2669 | 1011 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1012 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
1775fd3e | 1013 | p->o_arg.label = label; |
49f9a0fa TM |
1014 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1015 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1016 | case NFS4_OPEN_CLAIM_NULL: |
1017 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1018 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1019 | p->o_arg.fh = NFS_FH(dir); | |
1020 | break; | |
1021 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1022 | case NFS4_OPEN_CLAIM_FH: | |
1023 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1024 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1025 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
1026 | } | |
536e43d1 | 1027 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1028 | __u32 verf[2]; |
d77d76ff | 1029 | |
e56e0b78 TM |
1030 | p->o_arg.u.attrs = &p->attrs; |
1031 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1032 | |
1033 | verf[0] = jiffies; | |
1034 | verf[1] = current->pid; | |
1035 | memcpy(p->o_arg.u.verifier.data, verf, | |
1036 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1037 | } |
cdd4e68b TM |
1038 | p->c_arg.fh = &p->o_res.fh; |
1039 | p->c_arg.stateid = &p->o_res.stateid; | |
1040 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1041 | nfs4_init_opendata_res(p); |
c6d00e63 | 1042 | kref_init(&p->kref); |
e56e0b78 | 1043 | return p; |
14c43f76 DQ |
1044 | |
1045 | err_free_label: | |
1046 | nfs4_label_free(p->f_label); | |
1047 | err_free_p: | |
e56e0b78 TM |
1048 | kfree(p); |
1049 | err: | |
1050 | dput(parent); | |
1051 | return NULL; | |
1052 | } | |
1053 | ||
c6d00e63 | 1054 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1055 | { |
c6d00e63 TM |
1056 | struct nfs4_opendata *p = container_of(kref, |
1057 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1058 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1059 | |
1060 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1061 | if (p->state != NULL) |
1062 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1063 | nfs4_put_state_owner(p->owner); |
14c43f76 DQ |
1064 | |
1065 | nfs4_label_free(p->f_label); | |
1066 | ||
c6d00e63 | 1067 | dput(p->dir); |
82a2c1b7 AV |
1068 | dput(p->dentry); |
1069 | nfs_sb_deactive(sb); | |
6926afd1 | 1070 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1071 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1072 | kfree(p); |
1073 | } | |
1074 | ||
1075 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1076 | { | |
1077 | if (p != NULL) | |
1078 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1079 | } |
1080 | ||
06f814a3 TM |
1081 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1082 | { | |
06f814a3 TM |
1083 | int ret; |
1084 | ||
06f814a3 | 1085 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1086 | return ret; |
1087 | } | |
1088 | ||
dc0b027d | 1089 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1090 | { |
1091 | int ret = 0; | |
dc0b027d | 1092 | |
536e43d1 | 1093 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1094 | goto out; |
1095 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1096 | case FMODE_READ: |
88069f77 TM |
1097 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1098 | && state->n_rdonly != 0; | |
6ee41268 TM |
1099 | break; |
1100 | case FMODE_WRITE: | |
88069f77 TM |
1101 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1102 | && state->n_wronly != 0; | |
6ee41268 TM |
1103 | break; |
1104 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1105 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1106 | && state->n_rdwr != 0; | |
6ee41268 | 1107 | } |
dc0b027d | 1108 | out: |
6ee41268 TM |
1109 | return ret; |
1110 | } | |
1111 | ||
dc0b027d | 1112 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1113 | { |
652f89f6 TM |
1114 | if (delegation == NULL) |
1115 | return 0; | |
dc0b027d | 1116 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1117 | return 0; |
15c831bf | 1118 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1119 | return 0; |
d25be546 TM |
1120 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1121 | return 0; | |
b7391f44 | 1122 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1123 | return 1; |
1124 | } | |
1125 | ||
dc0b027d | 1126 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1127 | { |
dc0b027d | 1128 | switch (fmode) { |
e7616923 TM |
1129 | case FMODE_WRITE: |
1130 | state->n_wronly++; | |
1131 | break; | |
1132 | case FMODE_READ: | |
1133 | state->n_rdonly++; | |
1134 | break; | |
1135 | case FMODE_READ|FMODE_WRITE: | |
1136 | state->n_rdwr++; | |
1137 | } | |
dc0b027d | 1138 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1139 | } |
1140 | ||
4f14c194 TM |
1141 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1142 | { | |
1143 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1144 | bool need_recover = false; | |
1145 | ||
1146 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1147 | need_recover = true; | |
1148 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1149 | need_recover = true; | |
1150 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1151 | need_recover = true; | |
1152 | if (need_recover) | |
1153 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1154 | } | |
1155 | ||
e999e80e TM |
1156 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1157 | nfs4_stateid *stateid) | |
1158 | { | |
1159 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1160 | return true; | |
4f14c194 TM |
1161 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1162 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1163 | return true; |
4f14c194 | 1164 | } |
e999e80e TM |
1165 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1166 | return true; | |
1167 | return false; | |
1168 | } | |
1169 | ||
226056c5 TM |
1170 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
1171 | nfs4_stateid *stateid, fmode_t fmode) | |
003707c7 | 1172 | { |
226056c5 TM |
1173 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1174 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1175 | case FMODE_WRITE: | |
1176 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1177 | break; | |
1178 | case FMODE_READ: | |
1179 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1180 | break; | |
1181 | case 0: | |
1182 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1183 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1184 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1185 | } | |
1186 | if (stateid == NULL) | |
1187 | return; | |
1188 | if (!nfs_need_update_open_stateid(state, stateid)) | |
1189 | return; | |
003707c7 | 1190 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1191 | nfs4_stateid_copy(&state->stateid, stateid); |
1192 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1193 | } |
1194 | ||
1195 | static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) | |
1196 | { | |
1197 | write_seqlock(&state->seqlock); | |
1198 | nfs_clear_open_stateid_locked(state, stateid, fmode); | |
1199 | write_sequnlock(&state->seqlock); | |
4f14c194 TM |
1200 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1201 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1202 | } |
1203 | ||
dc0b027d | 1204 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1205 | { |
dc0b027d | 1206 | switch (fmode) { |
003707c7 TM |
1207 | case FMODE_READ: |
1208 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1209 | break; | |
1210 | case FMODE_WRITE: | |
1211 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1212 | break; | |
1213 | case FMODE_READ|FMODE_WRITE: | |
1214 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1215 | } | |
e999e80e TM |
1216 | if (!nfs_need_update_open_stateid(state, stateid)) |
1217 | return; | |
1218 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1219 | nfs4_stateid_copy(&state->stateid, stateid); | |
1220 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1221 | } |
1222 | ||
dc0b027d | 1223 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1224 | { |
8bda4e4c TM |
1225 | /* |
1226 | * Protect the call to nfs4_state_set_mode_locked and | |
1227 | * serialise the stateid update | |
1228 | */ | |
1229 | write_seqlock(&state->seqlock); | |
003707c7 | 1230 | if (deleg_stateid != NULL) { |
f597c537 | 1231 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1232 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1233 | } | |
1234 | if (open_stateid != NULL) | |
dc0b027d | 1235 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1236 | write_sequnlock(&state->seqlock); |
1237 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1238 | update_open_stateflags(state, fmode); |
ec073428 | 1239 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1240 | } |
1241 | ||
dc0b027d | 1242 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1243 | { |
1244 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1245 | struct nfs_delegation *deleg_cur; | |
1246 | int ret = 0; | |
1247 | ||
dc0b027d | 1248 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1249 | |
1250 | rcu_read_lock(); | |
1251 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1252 | if (deleg_cur == NULL) | |
1253 | goto no_delegation; | |
1254 | ||
1255 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1256 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1257 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1258 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1259 | goto no_delegation_unlock; |
1260 | ||
1261 | if (delegation == NULL) | |
1262 | delegation = &deleg_cur->stateid; | |
f597c537 | 1263 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1264 | goto no_delegation_unlock; |
1265 | ||
b7391f44 | 1266 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1267 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1268 | ret = 1; |
1269 | no_delegation_unlock: | |
1270 | spin_unlock(&deleg_cur->lock); | |
1271 | no_delegation: | |
1272 | rcu_read_unlock(); | |
1273 | ||
1274 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1275 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1276 | ret = 1; |
1277 | } | |
4f14c194 TM |
1278 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1279 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1280 | |
1281 | return ret; | |
1282 | } | |
1283 | ||
1284 | ||
dc0b027d | 1285 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1286 | { |
1287 | struct nfs_delegation *delegation; | |
1288 | ||
1289 | rcu_read_lock(); | |
1290 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1291 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1292 | rcu_read_unlock(); |
1293 | return; | |
1294 | } | |
1295 | rcu_read_unlock(); | |
57ec14c5 | 1296 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1297 | } |
1298 | ||
6ee41268 | 1299 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1300 | { |
1301 | struct nfs4_state *state = opendata->state; | |
1302 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1303 | struct nfs_delegation *delegation; | |
f448badd | 1304 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1305 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1306 | nfs4_stateid stateid; |
1307 | int ret = -EAGAIN; | |
1308 | ||
aac00a8d | 1309 | for (;;) { |
dc0b027d | 1310 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1311 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1312 | if (can_open_cached(state, fmode, open_mode)) { |
1313 | update_open_stateflags(state, fmode); | |
6ee41268 | 1314 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1315 | goto out_return_state; |
1316 | } | |
1317 | spin_unlock(&state->owner->so_lock); | |
1318 | } | |
34310430 TM |
1319 | rcu_read_lock(); |
1320 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1321 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1322 | rcu_read_unlock(); |
aac00a8d | 1323 | break; |
34310430 | 1324 | } |
aac00a8d | 1325 | /* Save the delegation */ |
f597c537 | 1326 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1327 | rcu_read_unlock(); |
fa332941 | 1328 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1329 | if (!opendata->is_recover) { |
1330 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1331 | if (ret != 0) | |
1332 | goto out; | |
1333 | } | |
aac00a8d | 1334 | ret = -EAGAIN; |
34310430 TM |
1335 | |
1336 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1337 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1338 | goto out_return_state; |
aac00a8d | 1339 | } |
aac00a8d TM |
1340 | out: |
1341 | return ERR_PTR(ret); | |
1342 | out_return_state: | |
1343 | atomic_inc(&state->count); | |
1344 | return state; | |
1345 | } | |
1346 | ||
e23008ec AA |
1347 | static void |
1348 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1349 | { | |
1350 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1351 | struct nfs_delegation *delegation; | |
1352 | int delegation_flags = 0; | |
1353 | ||
1354 | rcu_read_lock(); | |
1355 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1356 | if (delegation) | |
1357 | delegation_flags = delegation->flags; | |
1358 | rcu_read_unlock(); | |
1359 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1360 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1361 | "returning a delegation for " | |
1362 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1363 | clp->cl_hostname); | |
1364 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1365 | nfs_inode_set_delegation(state->inode, | |
1366 | data->owner->so_cred, | |
1367 | &data->o_res); | |
1368 | else | |
1369 | nfs_inode_reclaim_delegation(state->inode, | |
1370 | data->owner->so_cred, | |
1371 | &data->o_res); | |
1372 | } | |
1373 | ||
1374 | /* | |
1375 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1376 | * and update the nfs4_state. | |
1377 | */ | |
1378 | static struct nfs4_state * | |
1379 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1380 | { | |
1381 | struct inode *inode = data->state->inode; | |
1382 | struct nfs4_state *state = data->state; | |
1383 | int ret; | |
1384 | ||
d2bfda2e WAA |
1385 | if (!data->rpc_done) { |
1386 | if (data->rpc_status) { | |
1387 | ret = data->rpc_status; | |
1388 | goto err; | |
1389 | } | |
1390 | /* cached opens have already been processed */ | |
1391 | goto update; | |
e23008ec AA |
1392 | } |
1393 | ||
e23008ec AA |
1394 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1395 | if (ret) | |
1396 | goto err; | |
1397 | ||
1398 | if (data->o_res.delegation_type != 0) | |
1399 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1400 | update: |
e23008ec AA |
1401 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1402 | data->o_arg.fmode); | |
d49f042a | 1403 | atomic_inc(&state->count); |
e23008ec AA |
1404 | |
1405 | return state; | |
1406 | err: | |
1407 | return ERR_PTR(ret); | |
1408 | ||
1409 | } | |
1410 | ||
1411 | static struct nfs4_state * | |
1412 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1413 | { |
1414 | struct inode *inode; | |
1415 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1416 | int ret; |
24ac23ab | 1417 | |
aac00a8d | 1418 | if (!data->rpc_done) { |
6ee41268 | 1419 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1420 | goto out; |
1421 | } | |
1422 | ||
1b370bc2 | 1423 | ret = -EAGAIN; |
24ac23ab | 1424 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1425 | goto err; |
1775fd3e | 1426 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1427 | ret = PTR_ERR(inode); |
03f28e3a | 1428 | if (IS_ERR(inode)) |
1b370bc2 TM |
1429 | goto err; |
1430 | ret = -ENOMEM; | |
24ac23ab TM |
1431 | state = nfs4_get_open_state(inode, data->owner); |
1432 | if (state == NULL) | |
1b370bc2 | 1433 | goto err_put_inode; |
e23008ec AA |
1434 | if (data->o_res.delegation_type != 0) |
1435 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1436 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1437 | data->o_arg.fmode); |
24ac23ab | 1438 | iput(inode); |
aac00a8d | 1439 | out: |
7aa262b5 | 1440 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1441 | return state; |
1b370bc2 TM |
1442 | err_put_inode: |
1443 | iput(inode); | |
1444 | err: | |
1445 | return ERR_PTR(ret); | |
24ac23ab TM |
1446 | } |
1447 | ||
e23008ec AA |
1448 | static struct nfs4_state * |
1449 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1450 | { | |
1451 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1452 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1453 | return _nfs4_opendata_to_nfs4_state(data); | |
1454 | } | |
1455 | ||
864472e9 TM |
1456 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1457 | { | |
1458 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1459 | struct nfs_open_context *ctx; | |
1460 | ||
1461 | spin_lock(&state->inode->i_lock); | |
1462 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1463 | if (ctx->state != state) | |
1464 | continue; | |
1465 | get_nfs_open_context(ctx); | |
1466 | spin_unlock(&state->inode->i_lock); | |
1467 | return ctx; | |
1468 | } | |
1469 | spin_unlock(&state->inode->i_lock); | |
1470 | return ERR_PTR(-ENOENT); | |
1471 | } | |
1472 | ||
4a1c0893 TM |
1473 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1474 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1475 | { |
1476 | struct nfs4_opendata *opendata; | |
1477 | ||
4a1c0893 | 1478 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1479 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1480 | if (opendata == NULL) |
1481 | return ERR_PTR(-ENOMEM); | |
1482 | opendata->state = state; | |
1483 | atomic_inc(&state->count); | |
1484 | return opendata; | |
1485 | } | |
1486 | ||
dc0b027d | 1487 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1488 | { |
2ced46c2 | 1489 | struct nfs4_state *newstate; |
864472e9 TM |
1490 | int ret; |
1491 | ||
dc0b027d TM |
1492 | opendata->o_arg.open_flags = 0; |
1493 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1494 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1495 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1496 | nfs4_init_opendata_res(opendata); | |
b257957e | 1497 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1498 | if (ret != 0) |
1499 | return ret; | |
2ced46c2 | 1500 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1501 | if (IS_ERR(newstate)) |
1502 | return PTR_ERR(newstate); | |
643168c2 | 1503 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1504 | *res = newstate; |
864472e9 TM |
1505 | return 0; |
1506 | } | |
1507 | ||
1508 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1509 | { | |
864472e9 | 1510 | struct nfs4_state *newstate; |
864472e9 TM |
1511 | int ret; |
1512 | ||
4f14c194 TM |
1513 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1514 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1515 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1516 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1517 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1518 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1519 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1520 | smp_rmb(); |
1521 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1522 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1523 | if (ret != 0) |
1524 | return ret; | |
2ced46c2 TM |
1525 | if (newstate != state) |
1526 | return -ESTALE; | |
864472e9 TM |
1527 | } |
1528 | if (state->n_wronly != 0) { | |
2ced46c2 | 1529 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1530 | if (ret != 0) |
1531 | return ret; | |
2ced46c2 TM |
1532 | if (newstate != state) |
1533 | return -ESTALE; | |
864472e9 TM |
1534 | } |
1535 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1536 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1537 | if (ret != 0) |
1538 | return ret; | |
2ced46c2 TM |
1539 | if (newstate != state) |
1540 | return -ESTALE; | |
864472e9 | 1541 | } |
1ac7e2fd TM |
1542 | /* |
1543 | * We may have performed cached opens for all three recoveries. | |
1544 | * Check if we need to update the current stateid. | |
1545 | */ | |
1546 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1547 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1548 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1549 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1550 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1551 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1552 | } |
864472e9 TM |
1553 | return 0; |
1554 | } | |
1555 | ||
1da177e4 LT |
1556 | /* |
1557 | * OPEN_RECLAIM: | |
1558 | * reclaim state on the server after a reboot. | |
1da177e4 | 1559 | */ |
539cd03a | 1560 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1561 | { |
1ac7e2fd | 1562 | struct nfs_delegation *delegation; |
864472e9 | 1563 | struct nfs4_opendata *opendata; |
dc0b027d | 1564 | fmode_t delegation_type = 0; |
1da177e4 LT |
1565 | int status; |
1566 | ||
4a1c0893 TM |
1567 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1568 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1569 | if (IS_ERR(opendata)) |
1570 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1571 | rcu_read_lock(); |
1572 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1573 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1574 | delegation_type = delegation->type; |
1ac7e2fd | 1575 | rcu_read_unlock(); |
864472e9 TM |
1576 | opendata->o_arg.u.delegation_type = delegation_type; |
1577 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1578 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1579 | return status; |
1580 | } | |
1581 | ||
539cd03a | 1582 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1583 | { |
1584 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1585 | struct nfs4_exception exception = { }; | |
1586 | int err; | |
1587 | do { | |
539cd03a | 1588 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1589 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1590 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1591 | continue; | |
168667c4 | 1592 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1593 | break; |
1594 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1595 | } while (exception.retry); |
1596 | return err; | |
1597 | } | |
1598 | ||
864472e9 TM |
1599 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1600 | { | |
1601 | struct nfs_open_context *ctx; | |
1602 | int ret; | |
1603 | ||
1604 | ctx = nfs4_state_find_open_context(state); | |
1605 | if (IS_ERR(ctx)) | |
91876b13 | 1606 | return -EAGAIN; |
539cd03a | 1607 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1608 | put_nfs_open_context(ctx); |
1609 | return ret; | |
1610 | } | |
1611 | ||
db4f2e63 | 1612 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1613 | { |
be76b5b6 TM |
1614 | switch (err) { |
1615 | default: | |
1616 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1617 | "%d.\n", __func__, err); | |
1618 | case 0: | |
1619 | case -ENOENT: | |
1620 | case -ESTALE: | |
1621 | break; | |
1622 | case -NFS4ERR_BADSESSION: | |
1623 | case -NFS4ERR_BADSLOT: | |
1624 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1625 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1626 | case -NFS4ERR_DEADSESSION: | |
1627 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1628 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1629 | return -EAGAIN; | |
1630 | case -NFS4ERR_STALE_CLIENTID: | |
1631 | case -NFS4ERR_STALE_STATEID: | |
1632 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1633 | case -NFS4ERR_EXPIRED: | |
1634 | /* Don't recall a delegation if it was lost */ | |
1635 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1636 | return -EAGAIN; | |
352297b9 CL |
1637 | case -NFS4ERR_MOVED: |
1638 | nfs4_schedule_migration_recovery(server); | |
1639 | return -EAGAIN; | |
8ef2f8d4 CL |
1640 | case -NFS4ERR_LEASE_MOVED: |
1641 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1642 | return -EAGAIN; | |
be76b5b6 TM |
1643 | case -NFS4ERR_DELEG_REVOKED: |
1644 | case -NFS4ERR_ADMIN_REVOKED: | |
1645 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1646 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1647 | nfs_inode_find_state_and_recover(state->inode, |
1648 | stateid); | |
1649 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1650 | return 0; |
1651 | case -NFS4ERR_DELAY: | |
1652 | case -NFS4ERR_GRACE: | |
1653 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1654 | ssleep(1); | |
1655 | return -EAGAIN; | |
db4f2e63 TM |
1656 | case -ENOMEM: |
1657 | case -NFS4ERR_DENIED: | |
1658 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1659 | return 0; | |
be76b5b6 | 1660 | } |
1da177e4 LT |
1661 | return err; |
1662 | } | |
1663 | ||
db4f2e63 TM |
1664 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1665 | { | |
1666 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1667 | struct nfs4_opendata *opendata; | |
1668 | int err; | |
1669 | ||
1670 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1671 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1672 | if (IS_ERR(opendata)) | |
1673 | return PTR_ERR(opendata); | |
1674 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1675 | err = nfs4_open_recover(opendata, state); | |
1676 | nfs4_opendata_put(opendata); | |
1677 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1678 | } | |
1679 | ||
be05c860 CL |
1680 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1681 | { | |
1682 | struct nfs4_opendata *data = calldata; | |
1683 | ||
17ead6c8 TM |
1684 | nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args, |
1685 | &data->c_res.seq_res, task); | |
be05c860 CL |
1686 | } |
1687 | ||
cdd4e68b TM |
1688 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1689 | { | |
1690 | struct nfs4_opendata *data = calldata; | |
1691 | ||
17ead6c8 | 1692 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1693 | |
cdd4e68b | 1694 | data->rpc_status = task->tk_status; |
26e976a8 | 1695 | if (data->rpc_status == 0) { |
f597c537 | 1696 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1697 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1698 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1699 | data->rpc_done = 1; |
26e976a8 | 1700 | } |
cdd4e68b TM |
1701 | } |
1702 | ||
1703 | static void nfs4_open_confirm_release(void *calldata) | |
1704 | { | |
1705 | struct nfs4_opendata *data = calldata; | |
1706 | struct nfs4_state *state = NULL; | |
1707 | ||
1708 | /* If this request hasn't been cancelled, do nothing */ | |
1709 | if (data->cancelled == 0) | |
1710 | goto out_free; | |
1711 | /* In case of error, no cleanup! */ | |
3e309914 | 1712 | if (!data->rpc_done) |
cdd4e68b | 1713 | goto out_free; |
cdd4e68b | 1714 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1715 | if (!IS_ERR(state)) |
643168c2 | 1716 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1717 | out_free: |
c6d00e63 | 1718 | nfs4_opendata_put(data); |
cdd4e68b TM |
1719 | } |
1720 | ||
1721 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1722 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1723 | .rpc_call_done = nfs4_open_confirm_done, |
1724 | .rpc_release = nfs4_open_confirm_release, | |
1725 | }; | |
1726 | ||
1727 | /* | |
1728 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1729 | */ | |
1730 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1731 | { | |
1732 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1733 | struct rpc_task *task; | |
5138fde0 TM |
1734 | struct rpc_message msg = { |
1735 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1736 | .rpc_argp = &data->c_arg, | |
1737 | .rpc_resp = &data->c_res, | |
1738 | .rpc_cred = data->owner->so_cred, | |
1739 | }; | |
c970aa85 TM |
1740 | struct rpc_task_setup task_setup_data = { |
1741 | .rpc_client = server->client, | |
5138fde0 | 1742 | .rpc_message = &msg, |
c970aa85 TM |
1743 | .callback_ops = &nfs4_open_confirm_ops, |
1744 | .callback_data = data, | |
101070ca | 1745 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1746 | .flags = RPC_TASK_ASYNC, |
1747 | }; | |
1da177e4 LT |
1748 | int status; |
1749 | ||
17ead6c8 | 1750 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1751 | kref_get(&data->kref); |
3e309914 TM |
1752 | data->rpc_done = 0; |
1753 | data->rpc_status = 0; | |
5138fde0 | 1754 | data->timestamp = jiffies; |
c970aa85 | 1755 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1756 | if (IS_ERR(task)) |
cdd4e68b | 1757 | return PTR_ERR(task); |
cdd4e68b TM |
1758 | status = nfs4_wait_for_completion_rpc_task(task); |
1759 | if (status != 0) { | |
1760 | data->cancelled = 1; | |
1761 | smp_wmb(); | |
1762 | } else | |
1763 | status = data->rpc_status; | |
e6b3c4db | 1764 | rpc_put_task(task); |
1da177e4 LT |
1765 | return status; |
1766 | } | |
1767 | ||
24ac23ab | 1768 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1769 | { |
24ac23ab TM |
1770 | struct nfs4_opendata *data = calldata; |
1771 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1772 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1773 | |
24ac23ab | 1774 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1775 | goto out_wait; |
aac00a8d TM |
1776 | /* |
1777 | * Check if we still need to send an OPEN call, or if we can use | |
1778 | * a delegation instead. | |
1779 | */ | |
1780 | if (data->state != NULL) { | |
1781 | struct nfs_delegation *delegation; | |
1782 | ||
dc0b027d | 1783 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1784 | goto out_no_action; |
aac00a8d TM |
1785 | rcu_read_lock(); |
1786 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1787 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1788 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1789 | can_open_delegated(delegation, data->o_arg.fmode)) |
1790 | goto unlock_no_action; | |
aac00a8d TM |
1791 | rcu_read_unlock(); |
1792 | } | |
95b72eb0 | 1793 | /* Update client id. */ |
549b19cc | 1794 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1795 | switch (data->o_arg.claim) { |
1796 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1797 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1798 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1799 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1800 | case NFS4_OPEN_CLAIM_FH: |
1801 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1802 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1803 | } | |
26e976a8 | 1804 | data->timestamp = jiffies; |
035168ab | 1805 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1806 | &data->o_arg.seq_args, |
2240a9e2 TM |
1807 | &data->o_res.seq_res, |
1808 | task) != 0) | |
1809 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1810 | |
1811 | /* Set the create mode (note dependency on the session type) */ | |
1812 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1813 | if (data->o_arg.open_flags & O_EXCL) { | |
1814 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1815 | if (nfs4_has_persistent_session(clp)) | |
1816 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1817 | else if (clp->cl_mvops->minor_version > 0) | |
1818 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1819 | } | |
6ee41268 | 1820 | return; |
652f89f6 TM |
1821 | unlock_no_action: |
1822 | rcu_read_unlock(); | |
6ee41268 TM |
1823 | out_no_action: |
1824 | task->tk_action = NULL; | |
c8da19b9 | 1825 | out_wait: |
b75ad4cd | 1826 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1827 | } |
1828 | ||
24ac23ab TM |
1829 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1830 | { | |
1831 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1832 | |
24ac23ab | 1833 | data->rpc_status = task->tk_status; |
d898528c | 1834 | |
14516c3a TM |
1835 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1836 | return; | |
d898528c | 1837 | |
24ac23ab | 1838 | if (task->tk_status == 0) { |
807d66d8 TM |
1839 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1840 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1841 | case S_IFREG: |
1842 | break; | |
1843 | case S_IFLNK: | |
24ac23ab | 1844 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1845 | break; |
1846 | case S_IFDIR: | |
24ac23ab | 1847 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1848 | break; |
1849 | default: | |
24ac23ab | 1850 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1851 | } |
6f926b5b | 1852 | } |
26e976a8 | 1853 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1854 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1855 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1856 | } |
3e309914 | 1857 | data->rpc_done = 1; |
24ac23ab | 1858 | } |
6f926b5b | 1859 | |
24ac23ab TM |
1860 | static void nfs4_open_release(void *calldata) |
1861 | { | |
1862 | struct nfs4_opendata *data = calldata; | |
1863 | struct nfs4_state *state = NULL; | |
1864 | ||
1865 | /* If this request hasn't been cancelled, do nothing */ | |
1866 | if (data->cancelled == 0) | |
1867 | goto out_free; | |
1868 | /* In case of error, no cleanup! */ | |
3e309914 | 1869 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1870 | goto out_free; |
1871 | /* In case we need an open_confirm, no cleanup! */ | |
1872 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1873 | goto out_free; | |
24ac23ab | 1874 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1875 | if (!IS_ERR(state)) |
643168c2 | 1876 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1877 | out_free: |
c6d00e63 | 1878 | nfs4_opendata_put(data); |
24ac23ab TM |
1879 | } |
1880 | ||
1881 | static const struct rpc_call_ops nfs4_open_ops = { | |
1882 | .rpc_call_prepare = nfs4_open_prepare, | |
1883 | .rpc_call_done = nfs4_open_done, | |
1884 | .rpc_release = nfs4_open_release, | |
1885 | }; | |
1886 | ||
b257957e | 1887 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1888 | { |
1889 | struct inode *dir = data->dir->d_inode; | |
1890 | struct nfs_server *server = NFS_SERVER(dir); | |
1891 | struct nfs_openargs *o_arg = &data->o_arg; | |
1892 | struct nfs_openres *o_res = &data->o_res; | |
1893 | struct rpc_task *task; | |
5138fde0 TM |
1894 | struct rpc_message msg = { |
1895 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1896 | .rpc_argp = o_arg, | |
1897 | .rpc_resp = o_res, | |
1898 | .rpc_cred = data->owner->so_cred, | |
1899 | }; | |
c970aa85 TM |
1900 | struct rpc_task_setup task_setup_data = { |
1901 | .rpc_client = server->client, | |
5138fde0 | 1902 | .rpc_message = &msg, |
c970aa85 TM |
1903 | .callback_ops = &nfs4_open_ops, |
1904 | .callback_data = data, | |
101070ca | 1905 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1906 | .flags = RPC_TASK_ASYNC, |
1907 | }; | |
24ac23ab TM |
1908 | int status; |
1909 | ||
a9c92d6b | 1910 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1911 | kref_get(&data->kref); |
3e309914 TM |
1912 | data->rpc_done = 0; |
1913 | data->rpc_status = 0; | |
2ced46c2 | 1914 | data->cancelled = 0; |
bdeca1b7 TM |
1915 | data->is_recover = 0; |
1916 | if (isrecover) { | |
8fe72bac | 1917 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1918 | data->is_recover = 1; |
1919 | } | |
c970aa85 | 1920 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1921 | if (IS_ERR(task)) |
1922 | return PTR_ERR(task); | |
1923 | status = nfs4_wait_for_completion_rpc_task(task); | |
1924 | if (status != 0) { | |
1925 | data->cancelled = 1; | |
1926 | smp_wmb(); | |
1927 | } else | |
1928 | status = data->rpc_status; | |
1929 | rpc_put_task(task); | |
1930 | ||
1931 | return status; | |
1932 | } | |
1933 | ||
1934 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1935 | { | |
1936 | struct inode *dir = data->dir->d_inode; | |
1937 | struct nfs_openres *o_res = &data->o_res; | |
1938 | int status; | |
1939 | ||
1940 | status = nfs4_run_open_task(data, 1); | |
1941 | if (status != 0 || !data->rpc_done) | |
1942 | return status; | |
1943 | ||
6926afd1 TM |
1944 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1945 | ||
b257957e AB |
1946 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1947 | status = _nfs4_proc_open_confirm(data); | |
1948 | if (status != 0) | |
1949 | return status; | |
1950 | } | |
1951 | ||
1952 | return status; | |
1953 | } | |
1954 | ||
6168f62c WAA |
1955 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1956 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1957 | struct nfs4_state *state, fmode_t fmode, |
1958 | int openflags) | |
6168f62c WAA |
1959 | { |
1960 | struct nfs_access_entry cache; | |
1961 | u32 mask; | |
1962 | ||
1963 | /* access call failed or for some reason the server doesn't | |
1964 | * support any access modes -- defer access call until later */ | |
1965 | if (opendata->o_res.access_supported == 0) | |
1966 | return 0; | |
1967 | ||
1968 | mask = 0; | |
bbd3a8ee | 1969 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1970 | * write mode bits, but POSIX allows the creating process to write. |
1971 | * use openflags to check for exec, because fmode won't | |
1972 | * always have FMODE_EXEC set when file open for exec. */ | |
1973 | if (openflags & __FMODE_EXEC) { | |
1974 | /* ONLY check for exec rights */ | |
1975 | mask = MAY_EXEC; | |
1976 | } else if (fmode & FMODE_READ) | |
1977 | mask = MAY_READ; | |
6168f62c WAA |
1978 | |
1979 | cache.cred = cred; | |
1980 | cache.jiffies = jiffies; | |
1981 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1982 | nfs_access_add_cache(state->inode, &cache); | |
1983 | ||
bbd3a8ee | 1984 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1985 | return 0; |
1986 | ||
1987 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1988 | nfs4_close_state(state, fmode); | |
998f40b5 | 1989 | return -EACCES; |
6168f62c WAA |
1990 | } |
1991 | ||
b257957e AB |
1992 | /* |
1993 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1994 | */ | |
1995 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1996 | { | |
1997 | struct inode *dir = data->dir->d_inode; | |
1998 | struct nfs_server *server = NFS_SERVER(dir); | |
1999 | struct nfs_openargs *o_arg = &data->o_arg; | |
2000 | struct nfs_openres *o_res = &data->o_res; | |
2001 | int status; | |
2002 | ||
2003 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2004 | if (!data->rpc_done) |
2005 | return status; | |
2006 | if (status != 0) { | |
2007 | if (status == -NFS4ERR_BADNAME && | |
2008 | !(o_arg->open_flags & O_CREAT)) | |
2009 | return -ENOENT; | |
24ac23ab | 2010 | return status; |
08ef7bd3 | 2011 | } |
24ac23ab | 2012 | |
6926afd1 TM |
2013 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2014 | ||
5bc2afc2 | 2015 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2016 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2017 | if (o_arg->open_flags & O_EXCL) |
2018 | data->file_created = 1; | |
2019 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2020 | data->file_created = 1; | |
2021 | } | |
0df5dd4a TM |
2022 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2023 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2024 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2025 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2026 | if (status != 0) |
24ac23ab | 2027 | return status; |
1da177e4 LT |
2028 | } |
2029 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
1775fd3e | 2030 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2031 | return 0; |
1da177e4 LT |
2032 | } |
2033 | ||
d83217c1 AA |
2034 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2035 | { | |
2036 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2037 | } | |
2038 | ||
1da177e4 LT |
2039 | /* |
2040 | * OPEN_EXPIRED: | |
2041 | * reclaim state on the server after a network partition. | |
2042 | * Assumes caller holds the appropriate lock | |
2043 | */ | |
539cd03a | 2044 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2045 | { |
e56e0b78 | 2046 | struct nfs4_opendata *opendata; |
864472e9 | 2047 | int ret; |
1da177e4 | 2048 | |
4a1c0893 | 2049 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2050 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2051 | if (IS_ERR(opendata)) |
2052 | return PTR_ERR(opendata); | |
864472e9 | 2053 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2054 | if (ret == -ESTALE) |
3d4ff43d | 2055 | d_drop(ctx->dentry); |
c6d00e63 | 2056 | nfs4_opendata_put(opendata); |
864472e9 | 2057 | return ret; |
1da177e4 LT |
2058 | } |
2059 | ||
a9ed2e25 | 2060 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2061 | { |
539cd03a | 2062 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2063 | struct nfs4_exception exception = { }; |
2064 | int err; | |
2065 | ||
2066 | do { | |
539cd03a | 2067 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2068 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2069 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2070 | continue; | |
a9ed2e25 TM |
2071 | switch (err) { |
2072 | default: | |
2073 | goto out; | |
2074 | case -NFS4ERR_GRACE: | |
2075 | case -NFS4ERR_DELAY: | |
2076 | nfs4_handle_exception(server, err, &exception); | |
2077 | err = 0; | |
2078 | } | |
202b50dc | 2079 | } while (exception.retry); |
a9ed2e25 | 2080 | out: |
202b50dc TM |
2081 | return err; |
2082 | } | |
2083 | ||
1da177e4 LT |
2084 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2085 | { | |
1da177e4 | 2086 | struct nfs_open_context *ctx; |
864472e9 | 2087 | int ret; |
1da177e4 | 2088 | |
864472e9 TM |
2089 | ctx = nfs4_state_find_open_context(state); |
2090 | if (IS_ERR(ctx)) | |
91876b13 | 2091 | return -EAGAIN; |
539cd03a | 2092 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2093 | put_nfs_open_context(ctx); |
2094 | return ret; | |
1da177e4 LT |
2095 | } |
2096 | ||
f062eb6c | 2097 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 2098 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2099 | { |
f062eb6c | 2100 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 2101 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
2102 | struct nfs_delegation *delegation; |
2103 | struct rpc_cred *cred = NULL; | |
2104 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
2105 | |
2106 | /* If a state reset has been done, test_stateid is unneeded */ | |
2107 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
2108 | return; | |
2109 | ||
ab7cb0df TM |
2110 | /* Get the delegation credential for use by test/free_stateid */ |
2111 | rcu_read_lock(); | |
2112 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
2113 | if (delegation != NULL && | |
2114 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
2115 | cred = get_rpccred(delegation->cred); | |
2116 | rcu_read_unlock(); | |
2117 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 2118 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
2119 | } else |
2120 | rcu_read_unlock(); | |
2121 | ||
3e60ffdd CL |
2122 | if (status != NFS_OK) { |
2123 | /* Free the stateid unless the server explicitly | |
2124 | * informs us the stateid is unrecognized. */ | |
2125 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2126 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 2127 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2128 | |
6938867e BS |
2129 | write_seqlock(&state->seqlock); |
2130 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2131 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2132 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2133 | } | |
ab7cb0df TM |
2134 | |
2135 | if (cred != NULL) | |
2136 | put_rpccred(cred); | |
3e60ffdd CL |
2137 | } |
2138 | ||
2139 | /** | |
2140 | * nfs41_check_open_stateid - possibly free an open stateid | |
2141 | * | |
2142 | * @state: NFSv4 state for an inode | |
2143 | * | |
2144 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2145 | * Otherwise a negative NFS4ERR value is returned. | |
2146 | */ | |
2147 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2148 | { | |
2149 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2150 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2151 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2152 | int status; |
2153 | ||
2154 | /* If a state reset has been done, test_stateid is unneeded */ | |
2155 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2156 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2157 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2158 | return -NFS4ERR_BAD_STATEID; | |
2159 | ||
ab7cb0df | 2160 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2161 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2162 | if (status != NFS_OK) { |
2163 | /* Free the stateid unless the server explicitly | |
2164 | * informs us the stateid is unrecognized. */ | |
2165 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2166 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2167 | |
2168 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2169 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2170 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2171 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2172 | } |
2173 | return status; | |
2174 | } | |
2175 | ||
2176 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2177 | { | |
eb64cf96 | 2178 | int status; |
b01dd1d8 | 2179 | |
3e60ffdd CL |
2180 | nfs41_clear_delegation_stateid(state); |
2181 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2182 | if (status != NFS_OK) |
2183 | status = nfs4_open_expired(sp, state); | |
2184 | return status; | |
f062eb6c BS |
2185 | } |
2186 | #endif | |
2187 | ||
aa53ed54 JL |
2188 | /* |
2189 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2190 | * fields corresponding to attributes that were used to store the verifier. | |
2191 | * Make sure we clobber those fields in the later setattr call | |
2192 | */ | |
2193 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2194 | { | |
2195 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2196 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2197 | sattr->ia_valid |= ATTR_ATIME; | |
2198 | ||
2199 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2200 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2201 | sattr->ia_valid |= ATTR_MTIME; | |
2202 | } | |
2203 | ||
c21443c2 TM |
2204 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2205 | fmode_t fmode, | |
2206 | int flags, | |
3efb9722 | 2207 | struct nfs_open_context *ctx) |
c21443c2 TM |
2208 | { |
2209 | struct nfs4_state_owner *sp = opendata->owner; | |
2210 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2211 | struct dentry *dentry; |
c21443c2 TM |
2212 | struct nfs4_state *state; |
2213 | unsigned int seq; | |
2214 | int ret; | |
2215 | ||
2216 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2217 | ||
2218 | ret = _nfs4_proc_open(opendata); | |
2219 | if (ret != 0) | |
2220 | goto out; | |
2221 | ||
2222 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2223 | ret = PTR_ERR(state); | |
2224 | if (IS_ERR(state)) | |
2225 | goto out; | |
2226 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2227 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2228 | ||
275bb307 TM |
2229 | dentry = opendata->dentry; |
2230 | if (dentry->d_inode == NULL) { | |
2231 | /* FIXME: Is this d_drop() ever needed? */ | |
2232 | d_drop(dentry); | |
2233 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2234 | if (dentry == NULL) { | |
2235 | dentry = opendata->dentry; | |
2236 | } else if (dentry != ctx->dentry) { | |
2237 | dput(ctx->dentry); | |
2238 | ctx->dentry = dget(dentry); | |
2239 | } | |
2240 | nfs_set_verifier(dentry, | |
2241 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2242 | } | |
2243 | ||
c21443c2 TM |
2244 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2245 | if (ret != 0) | |
2246 | goto out; | |
2247 | ||
3efb9722 | 2248 | ctx->state = state; |
c45ffdd2 TM |
2249 | if (dentry->d_inode == state->inode) { |
2250 | nfs_inode_attach_open_context(ctx); | |
2251 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2252 | nfs4_schedule_stateid_recovery(server, state); | |
2253 | } | |
c21443c2 TM |
2254 | out: |
2255 | return ret; | |
2256 | } | |
2257 | ||
1da177e4 | 2258 | /* |
24ac23ab | 2259 | * Returns a referenced nfs4_state |
1da177e4 | 2260 | */ |
82be417a | 2261 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2262 | struct nfs_open_context *ctx, |
82be417a AA |
2263 | int flags, |
2264 | struct iattr *sattr, | |
5bc2afc2 TM |
2265 | struct nfs4_label *label, |
2266 | int *opened) | |
1da177e4 LT |
2267 | { |
2268 | struct nfs4_state_owner *sp; | |
2269 | struct nfs4_state *state = NULL; | |
2270 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2271 | struct nfs4_opendata *opendata; |
4197a055 TM |
2272 | struct dentry *dentry = ctx->dentry; |
2273 | struct rpc_cred *cred = ctx->cred; | |
2274 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2275 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2276 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2277 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2278 | int status; |
1da177e4 LT |
2279 | |
2280 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2281 | status = -ENOMEM; |
d1e284d5 TM |
2282 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2283 | if (sp == NULL) { | |
1da177e4 LT |
2284 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2285 | goto out_err; | |
2286 | } | |
58d9714a TM |
2287 | status = nfs4_recover_expired_lease(server); |
2288 | if (status != 0) | |
b4454fe1 | 2289 | goto err_put_state_owner; |
82a2c1b7 AV |
2290 | if (dentry->d_inode != NULL) |
2291 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2292 | status = -ENOMEM; |
49f9a0fa TM |
2293 | if (dentry->d_inode) |
2294 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2295 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2296 | label, claim, GFP_KERNEL); |
e56e0b78 | 2297 | if (opendata == NULL) |
95d35cb4 | 2298 | goto err_put_state_owner; |
1da177e4 | 2299 | |
14c43f76 DQ |
2300 | if (label) { |
2301 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2302 | if (IS_ERR(olabel)) { | |
2303 | status = PTR_ERR(olabel); | |
2304 | goto err_opendata_put; | |
2305 | } | |
2306 | } | |
2307 | ||
e911b815 TM |
2308 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2309 | if (!opendata->f_attr.mdsthreshold) { | |
2310 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2311 | if (!opendata->f_attr.mdsthreshold) | |
2312 | goto err_free_label; | |
2313 | } | |
1549210f | 2314 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2315 | } |
82a2c1b7 AV |
2316 | if (dentry->d_inode != NULL) |
2317 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2318 | |
3efb9722 | 2319 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2320 | if (status != 0) |
14c43f76 | 2321 | goto err_free_label; |
3efb9722 | 2322 | state = ctx->state; |
6168f62c | 2323 | |
549b19cc TM |
2324 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2325 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2326 | nfs4_exclusive_attrset(opendata, sattr); |
2327 | ||
2328 | nfs_fattr_init(opendata->o_res.f_attr); | |
2329 | status = nfs4_do_setattr(state->inode, cred, | |
2330 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2331 | state, label, olabel); |
2332 | if (status == 0) { | |
0ab64e0e | 2333 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2334 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2335 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2336 | } |
0ab64e0e | 2337 | } |
5bc2afc2 TM |
2338 | if (opendata->file_created) |
2339 | *opened |= FILE_CREATED; | |
82be417a | 2340 | |
e911b815 | 2341 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2342 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2343 | opendata->f_attr.mdsthreshold = NULL; |
2344 | } | |
82be417a | 2345 | |
14c43f76 DQ |
2346 | nfs4_label_free(olabel); |
2347 | ||
c6d00e63 | 2348 | nfs4_opendata_put(opendata); |
1da177e4 | 2349 | nfs4_put_state_owner(sp); |
1da177e4 | 2350 | return 0; |
14c43f76 DQ |
2351 | err_free_label: |
2352 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2353 | err_opendata_put: |
2354 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2355 | err_put_state_owner: |
2356 | nfs4_put_state_owner(sp); | |
1da177e4 | 2357 | out_err: |
1da177e4 LT |
2358 | return status; |
2359 | } | |
2360 | ||
2361 | ||
82be417a | 2362 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2363 | struct nfs_open_context *ctx, |
82be417a AA |
2364 | int flags, |
2365 | struct iattr *sattr, | |
5bc2afc2 TM |
2366 | struct nfs4_label *label, |
2367 | int *opened) | |
1da177e4 | 2368 | { |
49f9a0fa | 2369 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2370 | struct nfs4_exception exception = { }; |
2371 | struct nfs4_state *res; | |
2372 | int status; | |
2373 | ||
2374 | do { | |
5bc2afc2 | 2375 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2376 | res = ctx->state; |
42113a75 | 2377 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2378 | if (status == 0) |
2379 | break; | |
2380 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2381 | * book-keeping w.r.t. state-changing operations | |
2382 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2383 | * It is actually a sign of a bug on the client or on the server. | |
2384 | * | |
2385 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2386 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2387 | * have unhashed the old state_owner for us, and that we can |
2388 | * therefore safely retry using a new one. We should still warn | |
2389 | * the user though... | |
2390 | */ | |
2391 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2392 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2393 | " returned a bad sequence-id error!\n", |
2394 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2395 | exception.retry = 1; |
2396 | continue; | |
2397 | } | |
550f5747 TM |
2398 | /* |
2399 | * BAD_STATEID on OPEN means that the server cancelled our | |
2400 | * state before it received the OPEN_CONFIRM. | |
2401 | * Recover by retrying the request as per the discussion | |
2402 | * on Page 181 of RFC3530. | |
2403 | */ | |
2404 | if (status == -NFS4ERR_BAD_STATEID) { | |
2405 | exception.retry = 1; | |
2406 | continue; | |
2407 | } | |
aac00a8d TM |
2408 | if (status == -EAGAIN) { |
2409 | /* We must have found a delegation */ | |
2410 | exception.retry = 1; | |
2411 | continue; | |
2412 | } | |
49f9a0fa TM |
2413 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2414 | continue; | |
2415 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2416 | status, &exception)); |
2417 | } while (exception.retry); | |
2418 | return res; | |
2419 | } | |
2420 | ||
659bfcd6 TM |
2421 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2422 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2423 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2424 | struct nfs4_label *olabel) | |
1da177e4 | 2425 | { |
3e4f6290 | 2426 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2427 | struct nfs_setattrargs arg = { |
3e4f6290 | 2428 | .fh = NFS_FH(inode), |
1da177e4 LT |
2429 | .iap = sattr, |
2430 | .server = server, | |
2431 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2432 | .label = ilabel, |
1da177e4 LT |
2433 | }; |
2434 | struct nfs_setattrres res = { | |
2435 | .fattr = fattr, | |
1775fd3e | 2436 | .label = olabel, |
1da177e4 LT |
2437 | .server = server, |
2438 | }; | |
2439 | struct rpc_message msg = { | |
659bfcd6 TM |
2440 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2441 | .rpc_argp = &arg, | |
2442 | .rpc_resp = &res, | |
2443 | .rpc_cred = cred, | |
1da177e4 | 2444 | }; |
26e976a8 | 2445 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2446 | fmode_t fmode; |
2447 | bool truncate; | |
65e4308d | 2448 | int status; |
1da177e4 | 2449 | |
aa9c2669 DQ |
2450 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2451 | if (ilabel) | |
2452 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2453 | ||
0e574af1 | 2454 | nfs_fattr_init(fattr); |
1da177e4 | 2455 | |
ee3ae84e TM |
2456 | /* Servers should only apply open mode checks for file size changes */ |
2457 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2458 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2459 | ||
2460 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2461 | /* Use that stateid */ | |
0418dae1 | 2462 | } else if (truncate && state != NULL) { |
2a369153 TM |
2463 | struct nfs_lockowner lockowner = { |
2464 | .l_owner = current->files, | |
2465 | .l_pid = current->tgid, | |
2466 | }; | |
0418dae1 TM |
2467 | if (!nfs4_valid_open_stateid(state)) |
2468 | return -EBADF; | |
2469 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2470 | &lockowner) == -EIO) | |
2471 | return -EBADF; | |
08e9eac4 | 2472 | } else |
f597c537 | 2473 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2474 | |
7c513058 | 2475 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2476 | if (status == 0 && state != NULL) |
2477 | renew_lease(server, timestamp); | |
65e4308d | 2478 | return status; |
1da177e4 LT |
2479 | } |
2480 | ||
659bfcd6 TM |
2481 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2482 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2483 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2484 | struct nfs4_label *olabel) | |
1da177e4 | 2485 | { |
3e4f6290 | 2486 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2487 | struct nfs4_exception exception = { |
2488 | .state = state, | |
3114ea7a | 2489 | .inode = inode, |
a1d0b5ee | 2490 | }; |
1da177e4 LT |
2491 | int err; |
2492 | do { | |
1775fd3e | 2493 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2494 | trace_nfs4_setattr(inode, err); |
451146be TM |
2495 | switch (err) { |
2496 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2497 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2498 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2499 | "applying open mode checks to " | |
2500 | "a SETATTR that is not " | |
2501 | "changing file size.\n", | |
2502 | server->nfs_client->cl_hostname); | |
2503 | } | |
451146be TM |
2504 | if (state && !(state->state & FMODE_WRITE)) { |
2505 | err = -EBADF; | |
2506 | if (sattr->ia_valid & ATTR_OPEN) | |
2507 | err = -EACCES; | |
2508 | goto out; | |
2509 | } | |
2510 | } | |
2511 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2512 | } while (exception.retry); |
451146be | 2513 | out: |
1da177e4 LT |
2514 | return err; |
2515 | } | |
2516 | ||
2517 | struct nfs4_closedata { | |
2518 | struct inode *inode; | |
2519 | struct nfs4_state *state; | |
2520 | struct nfs_closeargs arg; | |
2521 | struct nfs_closeres res; | |
516a6af6 | 2522 | struct nfs_fattr fattr; |
26e976a8 | 2523 | unsigned long timestamp; |
f7e8917a FI |
2524 | bool roc; |
2525 | u32 roc_barrier; | |
1da177e4 LT |
2526 | }; |
2527 | ||
963d8fe5 | 2528 | static void nfs4_free_closedata(void *data) |
9512135d | 2529 | { |
963d8fe5 TM |
2530 | struct nfs4_closedata *calldata = data; |
2531 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2532 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2533 | |
f7e8917a FI |
2534 | if (calldata->roc) |
2535 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2536 | nfs4_put_open_state(calldata->state); |
2537 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2538 | nfs4_put_state_owner(sp); |
322b2b90 | 2539 | nfs_sb_deactive(sb); |
9512135d TM |
2540 | kfree(calldata); |
2541 | } | |
2542 | ||
963d8fe5 | 2543 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2544 | { |
963d8fe5 | 2545 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2546 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2547 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2548 | ||
a3ca5651 | 2549 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2550 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2551 | return; | |
42113a75 | 2552 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2553 | /* hmm. we are done with the inode, and in the process of freeing |
2554 | * the state_owner. we keep this around to process errors | |
2555 | */ | |
1da177e4 LT |
2556 | switch (task->tk_status) { |
2557 | case 0: | |
f7e8917a FI |
2558 | if (calldata->roc) |
2559 | pnfs_roc_set_barrier(state->inode, | |
2560 | calldata->roc_barrier); | |
226056c5 | 2561 | nfs_clear_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2562 | renew_lease(server, calldata->timestamp); |
226056c5 | 2563 | goto out_release; |
69794ad7 | 2564 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2565 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2566 | case -NFS4ERR_OLD_STATEID: |
2567 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2568 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2569 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2570 | break; |
1da177e4 | 2571 | default: |
69794ad7 | 2572 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { |
72211dbe | 2573 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2574 | goto out_release; |
2575 | } | |
1da177e4 | 2576 | } |
226056c5 | 2577 | nfs_clear_open_stateid(state, NULL, calldata->arg.fmode); |
69794ad7 | 2578 | out_release: |
72211dbe | 2579 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2580 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2581 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2582 | } |
2583 | ||
4ce70ada | 2584 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2585 | { |
4ce70ada | 2586 | struct nfs4_closedata *calldata = data; |
9512135d | 2587 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2588 | struct inode *inode = calldata->inode; |
88069f77 | 2589 | int call_close = 0; |
9512135d | 2590 | |
a3ca5651 | 2591 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2592 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2593 | goto out_wait; |
003707c7 | 2594 | |
88069f77 TM |
2595 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2596 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2597 | spin_lock(&state->owner->so_lock); |
003707c7 | 2598 | /* Calculate the change in open mode */ |
e7616923 | 2599 | if (state->n_rdwr == 0) { |
003707c7 | 2600 | if (state->n_rdonly == 0) { |
88069f77 TM |
2601 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2602 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2603 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2604 | } |
2605 | if (state->n_wronly == 0) { | |
88069f77 TM |
2606 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2607 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2608 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2609 | } |
e7616923 | 2610 | } |
5d422301 TM |
2611 | if (!nfs4_valid_open_stateid(state)) |
2612 | call_close = 0; | |
4cecb76f | 2613 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2614 | |
2615 | if (!call_close) { | |
963d8fe5 | 2616 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2617 | goto out_no_action; |
9512135d | 2618 | } |
88069f77 | 2619 | |
f7e8917a | 2620 | if (calldata->arg.fmode == 0) { |
88069f77 | 2621 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2622 | if (calldata->roc && |
b9536ad5 AA |
2623 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2624 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2625 | goto out_wait; |
b9536ad5 | 2626 | } |
f7e8917a | 2627 | } |
88069f77 | 2628 | |
516a6af6 | 2629 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2630 | calldata->timestamp = jiffies; |
7fdab069 | 2631 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2632 | &calldata->arg.seq_args, |
2633 | &calldata->res.seq_res, | |
2240a9e2 TM |
2634 | task) != 0) |
2635 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2636 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2637 | return; |
2638 | out_no_action: | |
2639 | task->tk_action = NULL; | |
2640 | out_wait: | |
2641 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2642 | } |
2643 | ||
963d8fe5 | 2644 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2645 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2646 | .rpc_call_done = nfs4_close_done, |
2647 | .rpc_release = nfs4_free_closedata, | |
2648 | }; | |
2649 | ||
1da177e4 LT |
2650 | /* |
2651 | * It is possible for data to be read/written from a mem-mapped file | |
2652 | * after the sys_close call (which hits the vfs layer as a flush). | |
2653 | * This means that we can't safely call nfsv4 close on a file until | |
2654 | * the inode is cleared. This in turn means that we are not good | |
2655 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2656 | * share state even when we are done with one of the three share | |
2657 | * stateid's in the inode. | |
2658 | * | |
2659 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2660 | */ | |
1f7977c1 | 2661 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2662 | { |
4a35bd41 | 2663 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2664 | struct nfs4_closedata *calldata; |
b39e625b TM |
2665 | struct nfs4_state_owner *sp = state->owner; |
2666 | struct rpc_task *task; | |
5138fde0 TM |
2667 | struct rpc_message msg = { |
2668 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2669 | .rpc_cred = state->owner->so_cred, | |
2670 | }; | |
c970aa85 TM |
2671 | struct rpc_task_setup task_setup_data = { |
2672 | .rpc_client = server->client, | |
5138fde0 | 2673 | .rpc_message = &msg, |
c970aa85 | 2674 | .callback_ops = &nfs4_close_ops, |
101070ca | 2675 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2676 | .flags = RPC_TASK_ASYNC, |
2677 | }; | |
9512135d | 2678 | int status = -ENOMEM; |
1da177e4 | 2679 | |
fa940720 WAA |
2680 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2681 | &task_setup_data.rpc_client, &msg); | |
2682 | ||
8535b2be | 2683 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2684 | if (calldata == NULL) |
9512135d | 2685 | goto out; |
a9c92d6b | 2686 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2687 | calldata->inode = state->inode; |
1da177e4 | 2688 | calldata->state = state; |
4a35bd41 | 2689 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2690 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2691 | /* Serialization for the sequence id */ |
8535b2be | 2692 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2693 | if (calldata->arg.seqid == NULL) |
2694 | goto out_free_calldata; | |
dc0b027d | 2695 | calldata->arg.fmode = 0; |
a65318bf | 2696 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2697 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2698 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2699 | calldata->res.server = server; |
1f7977c1 | 2700 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2701 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2702 | |
1174dd1f TM |
2703 | msg.rpc_argp = &calldata->arg; |
2704 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2705 | task_setup_data.callback_data = calldata; |
2706 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2707 | if (IS_ERR(task)) |
2708 | return PTR_ERR(task); | |
a49c3c77 TM |
2709 | status = 0; |
2710 | if (wait) | |
2711 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2712 | rpc_put_task(task); |
a49c3c77 | 2713 | return status; |
9512135d TM |
2714 | out_free_calldata: |
2715 | kfree(calldata); | |
2716 | out: | |
b39e625b TM |
2717 | nfs4_put_open_state(state); |
2718 | nfs4_put_state_owner(sp); | |
9512135d | 2719 | return status; |
1da177e4 LT |
2720 | } |
2721 | ||
2b484297 | 2722 | static struct inode * |
5bc2afc2 TM |
2723 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2724 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2725 | { |
1da177e4 | 2726 | struct nfs4_state *state; |
aa9c2669 DQ |
2727 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2728 | ||
2729 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2730 | |
565277f6 | 2731 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2732 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2733 | |
2734 | nfs4_label_release_security(label); | |
2735 | ||
f46e0bd3 TM |
2736 | if (IS_ERR(state)) |
2737 | return ERR_CAST(state); | |
275bb307 | 2738 | return state->inode; |
1da177e4 LT |
2739 | } |
2740 | ||
1185a552 | 2741 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2742 | { |
2743 | if (ctx->state == NULL) | |
2744 | return; | |
2745 | if (is_sync) | |
643168c2 | 2746 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2747 | else |
643168c2 | 2748 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2749 | } |
1da177e4 | 2750 | |
b944dba3 TM |
2751 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2752 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
2753 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL) | |
2754 | ||
1da177e4 LT |
2755 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2756 | { | |
43652ad5 BH |
2757 | struct nfs4_server_caps_arg args = { |
2758 | .fhandle = fhandle, | |
2759 | }; | |
1da177e4 LT |
2760 | struct nfs4_server_caps_res res = {}; |
2761 | struct rpc_message msg = { | |
2762 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2763 | .rpc_argp = &args, |
1da177e4 LT |
2764 | .rpc_resp = &res, |
2765 | }; | |
2766 | int status; | |
2767 | ||
7c513058 | 2768 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2769 | if (status == 0) { |
b944dba3 TM |
2770 | /* Sanity check the server answers */ |
2771 | switch (server->nfs_client->cl_minorversion) { | |
2772 | case 0: | |
2773 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
2774 | res.attr_bitmask[2] = 0; | |
2775 | break; | |
2776 | case 1: | |
2777 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
2778 | break; | |
2779 | case 2: | |
2780 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
2781 | } | |
1da177e4 | 2782 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
2783 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2784 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2785 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2786 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
2787 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
2788 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
2789 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
2790 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
2791 | server->caps |= NFS_CAP_ACLS; |
2792 | if (res.has_links != 0) | |
2793 | server->caps |= NFS_CAP_HARDLINKS; | |
2794 | if (res.has_symlinks != 0) | |
2795 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2796 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2797 | server->caps |= NFS_CAP_FILEID; | |
2798 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2799 | server->caps |= NFS_CAP_MODE; | |
2800 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2801 | server->caps |= NFS_CAP_NLINK; | |
2802 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2803 | server->caps |= NFS_CAP_OWNER; | |
2804 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2805 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2806 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2807 | server->caps |= NFS_CAP_ATIME; | |
2808 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2809 | server->caps |= NFS_CAP_CTIME; | |
2810 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2811 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2812 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2813 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2814 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2815 | #endif | |
2816 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2817 | sizeof(server->attr_bitmask)); | |
b944dba3 | 2818 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 2819 | |
a65318bf TM |
2820 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2821 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2822 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 2823 | server->cache_consistency_bitmask[2] = 0; |
1da177e4 | 2824 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2825 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2826 | } |
cccef3b9 | 2827 | |
1da177e4 LT |
2828 | return status; |
2829 | } | |
2830 | ||
55a97593 | 2831 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2832 | { |
2833 | struct nfs4_exception exception = { }; | |
2834 | int err; | |
2835 | do { | |
2836 | err = nfs4_handle_exception(server, | |
2837 | _nfs4_server_capabilities(server, fhandle), | |
2838 | &exception); | |
2839 | } while (exception.retry); | |
2840 | return err; | |
2841 | } | |
2842 | ||
2843 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2844 | struct nfs_fsinfo *info) | |
2845 | { | |
aa9c2669 | 2846 | u32 bitmask[3]; |
1da177e4 | 2847 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2848 | .bitmask = bitmask, |
1da177e4 LT |
2849 | }; |
2850 | struct nfs4_lookup_res res = { | |
2851 | .server = server, | |
0e574af1 | 2852 | .fattr = info->fattr, |
1da177e4 LT |
2853 | .fh = fhandle, |
2854 | }; | |
2855 | struct rpc_message msg = { | |
2856 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2857 | .rpc_argp = &args, | |
2858 | .rpc_resp = &res, | |
2859 | }; | |
008f55d0 | 2860 | |
aa9c2669 DQ |
2861 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2862 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2863 | /* | |
2864 | * Process the label in the upcoming getfattr | |
2865 | */ | |
2866 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2867 | ||
0e574af1 | 2868 | nfs_fattr_init(info->fattr); |
7c513058 | 2869 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2870 | } |
2871 | ||
2872 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2873 | struct nfs_fsinfo *info) | |
2874 | { | |
2875 | struct nfs4_exception exception = { }; | |
2876 | int err; | |
2877 | do { | |
fb8a5ba8 | 2878 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2879 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2880 | switch (err) { |
2881 | case 0: | |
2882 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2883 | goto out; |
fb8a5ba8 BS |
2884 | default: |
2885 | err = nfs4_handle_exception(server, err, &exception); | |
2886 | } | |
1da177e4 | 2887 | } while (exception.retry); |
05e9cfb4 | 2888 | out: |
1da177e4 LT |
2889 | return err; |
2890 | } | |
2891 | ||
8f70e95f BS |
2892 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2893 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2894 | { | |
c2190661 TM |
2895 | struct rpc_auth_create_args auth_args = { |
2896 | .pseudoflavor = flavor, | |
2897 | }; | |
8f70e95f BS |
2898 | struct rpc_auth *auth; |
2899 | int ret; | |
2900 | ||
c2190661 | 2901 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2902 | if (IS_ERR(auth)) { |
75bc8821 | 2903 | ret = -EACCES; |
8f70e95f BS |
2904 | goto out; |
2905 | } | |
2906 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2907 | out: |
2908 | return ret; | |
2909 | } | |
2910 | ||
9a744ba3 CL |
2911 | /* |
2912 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2913 | * | |
2914 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2915 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2916 | * | |
2917 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2918 | * negative errno value. | |
2919 | */ | |
801a16dc | 2920 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2921 | struct nfs_fsinfo *info) |
1da177e4 | 2922 | { |
9a744ba3 CL |
2923 | /* Per 3530bis 15.33.5 */ |
2924 | static const rpc_authflavor_t flav_array[] = { | |
2925 | RPC_AUTH_GSS_KRB5P, | |
2926 | RPC_AUTH_GSS_KRB5I, | |
2927 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2928 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2929 | RPC_AUTH_NULL, |
2930 | }; | |
2931 | int status = -EPERM; | |
2932 | size_t i; | |
6a1a1e34 | 2933 | |
4d4b69dd WAA |
2934 | if (server->auth_info.flavor_len > 0) { |
2935 | /* try each flavor specified by user */ | |
2936 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
2937 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
2938 | server->auth_info.flavors[i]); | |
2939 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
2940 | continue; | |
2941 | break; | |
2942 | } | |
2943 | } else { | |
2944 | /* no flavors specified by user, try default list */ | |
2945 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
2946 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
2947 | flav_array[i]); | |
2948 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
2949 | continue; | |
2950 | break; | |
2951 | } | |
8f70e95f | 2952 | } |
9a744ba3 | 2953 | |
fb8a5ba8 BS |
2954 | /* |
2955 | * -EACCESS could mean that the user doesn't have correct permissions | |
2956 | * to access the mount. It could also mean that we tried to mount | |
2957 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2958 | * existing mount programs don't handle -EACCES very well so it should | |
2959 | * be mapped to -EPERM instead. | |
2960 | */ | |
2961 | if (status == -EACCES) | |
2962 | status = -EPERM; | |
801a16dc BS |
2963 | return status; |
2964 | } | |
2965 | ||
2ed4b95b CL |
2966 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2967 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2968 | { | |
2969 | int mv = server->nfs_client->cl_minorversion; | |
2970 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2971 | } | |
2972 | ||
2973 | /** | |
2974 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2975 | * @server: initialized nfs_server handle | |
2976 | * @fhandle: we fill in the pseudo-fs root file handle | |
2977 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 2978 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
2979 | * |
2980 | * Returns zero on success, or a negative errno. | |
801a16dc | 2981 | */ |
3028eb2b | 2982 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
2983 | struct nfs_fsinfo *info, |
2984 | bool auth_probe) | |
801a16dc | 2985 | { |
2ed4b95b CL |
2986 | int status; |
2987 | ||
5e6b1990 TM |
2988 | switch (auth_probe) { |
2989 | case false: | |
2990 | status = nfs4_lookup_root(server, fhandle, info); | |
2991 | if (status != -NFS4ERR_WRONGSEC) | |
2992 | break; | |
5e6b1990 | 2993 | default: |
2ed4b95b | 2994 | status = nfs4_do_find_root_sec(server, fhandle, info); |
5e6b1990 | 2995 | } |
2ed4b95b | 2996 | |
1da177e4 LT |
2997 | if (status == 0) |
2998 | status = nfs4_server_capabilities(server, fhandle); | |
2999 | if (status == 0) | |
3000 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3001 | |
c12e87f4 | 3002 | return nfs4_map_errors(status); |
1da177e4 LT |
3003 | } |
3004 | ||
bae36241 BS |
3005 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3006 | struct nfs_fsinfo *info) | |
3007 | { | |
3008 | int error; | |
3009 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3010 | struct nfs4_label *label = NULL; |
bae36241 BS |
3011 | |
3012 | error = nfs4_server_capabilities(server, mntfh); | |
3013 | if (error < 0) { | |
3014 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3015 | return error; | |
3016 | } | |
3017 | ||
14c43f76 DQ |
3018 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3019 | if (IS_ERR(label)) | |
3020 | return PTR_ERR(label); | |
3021 | ||
1775fd3e | 3022 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3023 | if (error < 0) { |
3024 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3025 | goto err_free_label; |
bae36241 BS |
3026 | } |
3027 | ||
3028 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3029 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3030 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3031 | ||
14c43f76 DQ |
3032 | err_free_label: |
3033 | nfs4_label_free(label); | |
3034 | ||
bae36241 BS |
3035 | return error; |
3036 | } | |
3037 | ||
6b97fd3d MN |
3038 | /* |
3039 | * Get locations and (maybe) other attributes of a referral. | |
3040 | * Note that we'll actually follow the referral later when | |
3041 | * we detect fsid mismatch in inode revalidation | |
3042 | */ | |
f05d147f BS |
3043 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3044 | const struct qstr *name, struct nfs_fattr *fattr, | |
3045 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3046 | { |
3047 | int status = -ENOMEM; | |
3048 | struct page *page = NULL; | |
3049 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3050 | |
3051 | page = alloc_page(GFP_KERNEL); | |
3052 | if (page == NULL) | |
3053 | goto out; | |
3054 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3055 | if (locations == NULL) | |
3056 | goto out; | |
3057 | ||
f05d147f | 3058 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3059 | if (status != 0) |
3060 | goto out; | |
519ae255 CL |
3061 | |
3062 | /* | |
3063 | * If the fsid didn't change, this is a migration event, not a | |
3064 | * referral. Cause us to drop into the exception handler, which | |
3065 | * will kick off migration recovery. | |
3066 | */ | |
6b97fd3d | 3067 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3068 | dprintk("%s: server did not return a different fsid for" |
3069 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3070 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3071 | goto out; |
3072 | } | |
533eb461 AA |
3073 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3074 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3075 | |
533eb461 | 3076 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3077 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3078 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3079 | out: | |
3080 | if (page) | |
3081 | __free_page(page); | |
5d7ca35a | 3082 | kfree(locations); |
6b97fd3d MN |
3083 | return status; |
3084 | } | |
3085 | ||
1775fd3e DQ |
3086 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3087 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3088 | { |
3089 | struct nfs4_getattr_arg args = { | |
3090 | .fh = fhandle, | |
3091 | .bitmask = server->attr_bitmask, | |
3092 | }; | |
3093 | struct nfs4_getattr_res res = { | |
3094 | .fattr = fattr, | |
1775fd3e | 3095 | .label = label, |
1da177e4 LT |
3096 | .server = server, |
3097 | }; | |
3098 | struct rpc_message msg = { | |
3099 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3100 | .rpc_argp = &args, | |
3101 | .rpc_resp = &res, | |
3102 | }; | |
aa9c2669 DQ |
3103 | |
3104 | args.bitmask = nfs4_bitmask(server, label); | |
3105 | ||
0e574af1 | 3106 | nfs_fattr_init(fattr); |
7c513058 | 3107 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3108 | } |
3109 | ||
1775fd3e DQ |
3110 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3111 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3112 | { |
3113 | struct nfs4_exception exception = { }; | |
3114 | int err; | |
3115 | do { | |
b5f875a9 TM |
3116 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3117 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3118 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3119 | &exception); |
3120 | } while (exception.retry); | |
3121 | return err; | |
3122 | } | |
3123 | ||
3124 | /* | |
3125 | * The file is not closed if it is opened due to the a request to change | |
3126 | * the size of the file. The open call will not be needed once the | |
3127 | * VFS layer lookup-intents are implemented. | |
3128 | * | |
3129 | * Close is called when the inode is destroyed. | |
3130 | * If we haven't opened the file for O_WRONLY, we | |
3131 | * need to in the size_change case to obtain a stateid. | |
3132 | * | |
3133 | * Got race? | |
3134 | * Because OPEN is always done by name in nfsv4, it is | |
3135 | * possible that we opened a different file by the same | |
3136 | * name. We can recognize this race condition, but we | |
3137 | * can't do anything about it besides returning an error. | |
3138 | * | |
3139 | * This will be fixed with VFS changes (lookup-intent). | |
3140 | */ | |
3141 | static int | |
3142 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3143 | struct iattr *sattr) | |
3144 | { | |
08e9eac4 | 3145 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3146 | struct rpc_cred *cred = NULL; |
d530838b | 3147 | struct nfs4_state *state = NULL; |
14c43f76 | 3148 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3149 | int status; |
3150 | ||
8a1636c4 | 3151 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 3152 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3153 | |
0e574af1 | 3154 | nfs_fattr_init(fattr); |
1da177e4 | 3155 | |
2669940d AA |
3156 | /* Deal with open(O_TRUNC) */ |
3157 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3158 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3159 | |
3160 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3161 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3162 | return 0; |
3163 | ||
d530838b | 3164 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3165 | if (sattr->ia_valid & ATTR_FILE) { |
3166 | struct nfs_open_context *ctx; | |
3167 | ||
3168 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3169 | if (ctx) { |
3170 | cred = ctx->cred; | |
3171 | state = ctx->state; | |
3172 | } | |
659bfcd6 | 3173 | } |
08e9eac4 | 3174 | |
14c43f76 DQ |
3175 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3176 | if (IS_ERR(label)) | |
3177 | return PTR_ERR(label); | |
3178 | ||
3179 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3180 | if (status == 0) { |
65e4308d | 3181 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3182 | nfs_setsecurity(inode, fattr, label); |
3183 | } | |
14c43f76 | 3184 | nfs4_label_free(label); |
1da177e4 LT |
3185 | return status; |
3186 | } | |
3187 | ||
0c2e53f1 TM |
3188 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3189 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3190 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3191 | { |
0c2e53f1 | 3192 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3193 | int status; |
3194 | struct nfs4_lookup_arg args = { | |
3195 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3196 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3197 | .name = name, |
3198 | }; | |
3199 | struct nfs4_lookup_res res = { | |
3200 | .server = server, | |
3201 | .fattr = fattr, | |
aa9c2669 | 3202 | .label = label, |
2b3de441 DH |
3203 | .fh = fhandle, |
3204 | }; | |
3205 | struct rpc_message msg = { | |
3206 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3207 | .rpc_argp = &args, | |
3208 | .rpc_resp = &res, | |
3209 | }; | |
3210 | ||
aa9c2669 DQ |
3211 | args.bitmask = nfs4_bitmask(server, label); |
3212 | ||
2b3de441 DH |
3213 | nfs_fattr_init(fattr); |
3214 | ||
1da177e4 | 3215 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3216 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3217 | dprintk("NFS reply lookup: %d\n", status); |
3218 | return status; | |
3219 | } | |
3220 | ||
72de53ec | 3221 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3222 | { |
7ebb9315 | 3223 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3224 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3225 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3226 | fattr->nlink = 2; | |
3227 | } | |
3228 | ||
72de53ec BS |
3229 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3230 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3231 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3232 | { |
3233 | struct nfs4_exception exception = { }; | |
72de53ec | 3234 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3235 | int err; |
3236 | do { | |
1775fd3e | 3237 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3238 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3239 | switch (err) { |
08ef7bd3 | 3240 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3241 | err = -ENOENT; |
3242 | goto out; | |
0c2e53f1 | 3243 | case -NFS4ERR_MOVED: |
f05d147f | 3244 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3245 | goto out; |
0c2e53f1 | 3246 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3247 | err = -EPERM; |
3248 | if (client != *clnt) | |
3249 | goto out; | |
72de53ec BS |
3250 | client = nfs4_create_sec_client(client, dir, name); |
3251 | if (IS_ERR(client)) | |
3252 | return PTR_ERR(client); | |
3253 | ||
3254 | exception.retry = 1; | |
3255 | break; | |
3256 | default: | |
3257 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3258 | } |
1da177e4 | 3259 | } while (exception.retry); |
72de53ec BS |
3260 | |
3261 | out: | |
3262 | if (err == 0) | |
3263 | *clnt = client; | |
3264 | else if (client != *clnt) | |
3265 | rpc_shutdown_client(client); | |
3266 | ||
1da177e4 LT |
3267 | return err; |
3268 | } | |
3269 | ||
80a16b21 | 3270 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3271 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3272 | struct nfs4_label *label) | |
72de53ec BS |
3273 | { |
3274 | int status; | |
3275 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3276 | ||
1775fd3e | 3277 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3278 | if (client != NFS_CLIENT(dir)) { |
3279 | rpc_shutdown_client(client); | |
3280 | nfs_fixup_secinfo_attributes(fattr); | |
3281 | } | |
3282 | return status; | |
3283 | } | |
3284 | ||
f05d147f BS |
3285 | struct rpc_clnt * |
3286 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3287 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3288 | { | |
b72888cb | 3289 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3290 | int status; |
f05d147f | 3291 | |
1775fd3e | 3292 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3293 | if (status < 0) |
f05d147f | 3294 | return ERR_PTR(status); |
b72888cb | 3295 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3296 | } |
3297 | ||
1da177e4 LT |
3298 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3299 | { | |
76b32999 | 3300 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3301 | struct nfs4_accessargs args = { |
3302 | .fh = NFS_FH(inode), | |
a4980e78 | 3303 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3304 | }; |
3305 | struct nfs4_accessres res = { | |
3306 | .server = server, | |
1da177e4 | 3307 | }; |
1da177e4 LT |
3308 | struct rpc_message msg = { |
3309 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3310 | .rpc_argp = &args, | |
3311 | .rpc_resp = &res, | |
3312 | .rpc_cred = entry->cred, | |
3313 | }; | |
3314 | int mode = entry->mask; | |
aa9c2669 | 3315 | int status = 0; |
1da177e4 LT |
3316 | |
3317 | /* | |
3318 | * Determine which access bits we want to ask for... | |
3319 | */ | |
3320 | if (mode & MAY_READ) | |
3321 | args.access |= NFS4_ACCESS_READ; | |
3322 | if (S_ISDIR(inode->i_mode)) { | |
3323 | if (mode & MAY_WRITE) | |
3324 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3325 | if (mode & MAY_EXEC) | |
3326 | args.access |= NFS4_ACCESS_LOOKUP; | |
3327 | } else { | |
3328 | if (mode & MAY_WRITE) | |
3329 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3330 | if (mode & MAY_EXEC) | |
3331 | args.access |= NFS4_ACCESS_EXECUTE; | |
3332 | } | |
c407d41a TM |
3333 | |
3334 | res.fattr = nfs_alloc_fattr(); | |
3335 | if (res.fattr == NULL) | |
3336 | return -ENOMEM; | |
3337 | ||
7c513058 | 3338 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3339 | if (!status) { |
6168f62c | 3340 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3341 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3342 | } |
c407d41a | 3343 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3344 | return status; |
3345 | } | |
3346 | ||
3347 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3348 | { | |
3349 | struct nfs4_exception exception = { }; | |
3350 | int err; | |
3351 | do { | |
c1578b76 TM |
3352 | err = _nfs4_proc_access(inode, entry); |
3353 | trace_nfs4_access(inode, err); | |
3354 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3355 | &exception); |
3356 | } while (exception.retry); | |
3357 | return err; | |
3358 | } | |
3359 | ||
3360 | /* | |
3361 | * TODO: For the time being, we don't try to get any attributes | |
3362 | * along with any of the zero-copy operations READ, READDIR, | |
3363 | * READLINK, WRITE. | |
3364 | * | |
3365 | * In the case of the first three, we want to put the GETATTR | |
3366 | * after the read-type operation -- this is because it is hard | |
3367 | * to predict the length of a GETATTR response in v4, and thus | |
3368 | * align the READ data correctly. This means that the GETATTR | |
3369 | * may end up partially falling into the page cache, and we should | |
3370 | * shift it into the 'tail' of the xdr_buf before processing. | |
3371 | * To do this efficiently, we need to know the total length | |
3372 | * of data received, which doesn't seem to be available outside | |
3373 | * of the RPC layer. | |
3374 | * | |
3375 | * In the case of WRITE, we also want to put the GETATTR after | |
3376 | * the operation -- in this case because we want to make sure | |
140150db | 3377 | * we get the post-operation mtime and size. |
1da177e4 LT |
3378 | * |
3379 | * Both of these changes to the XDR layer would in fact be quite | |
3380 | * minor, but I decided to leave them for a subsequent patch. | |
3381 | */ | |
3382 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3383 | unsigned int pgbase, unsigned int pglen) | |
3384 | { | |
3385 | struct nfs4_readlink args = { | |
3386 | .fh = NFS_FH(inode), | |
3387 | .pgbase = pgbase, | |
3388 | .pglen = pglen, | |
3389 | .pages = &page, | |
3390 | }; | |
f50c7000 | 3391 | struct nfs4_readlink_res res; |
1da177e4 LT |
3392 | struct rpc_message msg = { |
3393 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3394 | .rpc_argp = &args, | |
f50c7000 | 3395 | .rpc_resp = &res, |
1da177e4 LT |
3396 | }; |
3397 | ||
7c513058 | 3398 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3399 | } |
3400 | ||
3401 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3402 | unsigned int pgbase, unsigned int pglen) | |
3403 | { | |
3404 | struct nfs4_exception exception = { }; | |
3405 | int err; | |
3406 | do { | |
c1578b76 TM |
3407 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3408 | trace_nfs4_readlink(inode, err); | |
3409 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3410 | &exception); |
3411 | } while (exception.retry); | |
3412 | return err; | |
3413 | } | |
3414 | ||
1da177e4 | 3415 | /* |
8867fe58 | 3416 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3417 | */ |
1da177e4 LT |
3418 | static int |
3419 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3420 | int flags) |
1da177e4 | 3421 | { |
aa9c2669 | 3422 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3423 | struct nfs_open_context *ctx; |
1da177e4 | 3424 | struct nfs4_state *state; |
5bc2afc2 | 3425 | int opened = 0; |
1da177e4 LT |
3426 | int status = 0; |
3427 | ||
8867fe58 MS |
3428 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3429 | if (IS_ERR(ctx)) | |
3430 | return PTR_ERR(ctx); | |
3431 | ||
aa9c2669 DQ |
3432 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3433 | ||
a8a5da99 | 3434 | sattr->ia_mode &= ~current_umask(); |
5bc2afc2 | 3435 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); |
1da177e4 LT |
3436 | if (IS_ERR(state)) { |
3437 | status = PTR_ERR(state); | |
c0204fd2 | 3438 | goto out; |
1da177e4 | 3439 | } |
1da177e4 | 3440 | out: |
aa9c2669 | 3441 | nfs4_label_release_security(ilabel); |
8867fe58 | 3442 | put_nfs_open_context(ctx); |
1da177e4 LT |
3443 | return status; |
3444 | } | |
3445 | ||
3446 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3447 | { | |
16e42959 | 3448 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3449 | struct nfs_removeargs args = { |
1da177e4 | 3450 | .fh = NFS_FH(dir), |
26fe5750 | 3451 | .name = *name, |
16e42959 | 3452 | }; |
4fdc17b2 | 3453 | struct nfs_removeres res = { |
16e42959 | 3454 | .server = server, |
1da177e4 | 3455 | }; |
1da177e4 | 3456 | struct rpc_message msg = { |
4fdc17b2 TM |
3457 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3458 | .rpc_argp = &args, | |
3459 | .rpc_resp = &res, | |
1da177e4 | 3460 | }; |
778d2817 | 3461 | int status; |
1da177e4 | 3462 | |
7c513058 | 3463 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3464 | if (status == 0) |
16e42959 | 3465 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3466 | return status; |
3467 | } | |
3468 | ||
3469 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3470 | { | |
3471 | struct nfs4_exception exception = { }; | |
3472 | int err; | |
3473 | do { | |
078ea3df TM |
3474 | err = _nfs4_proc_remove(dir, name); |
3475 | trace_nfs4_remove(dir, name, err); | |
3476 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3477 | &exception); |
3478 | } while (exception.retry); | |
3479 | return err; | |
3480 | } | |
3481 | ||
e4eff1a6 | 3482 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3483 | { |
e4eff1a6 TM |
3484 | struct nfs_server *server = NFS_SERVER(dir); |
3485 | struct nfs_removeargs *args = msg->rpc_argp; | |
3486 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3487 | |
e4eff1a6 | 3488 | res->server = server; |
1da177e4 | 3489 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3490 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3491 | |
3492 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3493 | } |
3494 | ||
34e137cc BS |
3495 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3496 | { | |
d9afbd1b TM |
3497 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3498 | &data->args.seq_args, | |
3499 | &data->res.seq_res, | |
3500 | task); | |
1da177e4 LT |
3501 | } |
3502 | ||
e4eff1a6 | 3503 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3504 | { |
078ea3df TM |
3505 | struct nfs_unlinkdata *data = task->tk_calldata; |
3506 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3507 | |
14516c3a TM |
3508 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3509 | return 0; | |
9e33bed5 | 3510 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3511 | return 0; |
3512 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3513 | return 1; |
1da177e4 LT |
3514 | } |
3515 | ||
d3d4152a JL |
3516 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3517 | { | |
3518 | struct nfs_server *server = NFS_SERVER(dir); | |
3519 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3520 | struct nfs_renameres *res = msg->rpc_resp; | |
3521 | ||
3522 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3523 | res->server = server; |
a9c92d6b | 3524 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3525 | } |
3526 | ||
c6bfa1a1 BS |
3527 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3528 | { | |
d9afbd1b TM |
3529 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3530 | &data->args.seq_args, | |
3531 | &data->res.seq_res, | |
3532 | task); | |
d3d4152a JL |
3533 | } |
3534 | ||
3535 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3536 | struct inode *new_dir) | |
3537 | { | |
fbc6f7c2 TM |
3538 | struct nfs_renamedata *data = task->tk_calldata; |
3539 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3540 | |
3541 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3542 | return 0; | |
3543 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3544 | return 0; | |
3545 | ||
3546 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3547 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3548 | return 1; |
3549 | } | |
3550 | ||
1da177e4 LT |
3551 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3552 | { | |
91ba2eee | 3553 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3554 | struct nfs4_link_arg arg = { |
3555 | .fh = NFS_FH(inode), | |
3556 | .dir_fh = NFS_FH(dir), | |
3557 | .name = name, | |
91ba2eee TM |
3558 | .bitmask = server->attr_bitmask, |
3559 | }; | |
91ba2eee TM |
3560 | struct nfs4_link_res res = { |
3561 | .server = server, | |
1775fd3e | 3562 | .label = NULL, |
1da177e4 | 3563 | }; |
1da177e4 LT |
3564 | struct rpc_message msg = { |
3565 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3566 | .rpc_argp = &arg, | |
91ba2eee | 3567 | .rpc_resp = &res, |
1da177e4 | 3568 | }; |
136f2627 TM |
3569 | int status = -ENOMEM; |
3570 | ||
3571 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3572 | if (res.fattr == NULL) |
136f2627 | 3573 | goto out; |
1da177e4 | 3574 | |
14c43f76 DQ |
3575 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3576 | if (IS_ERR(res.label)) { | |
3577 | status = PTR_ERR(res.label); | |
3578 | goto out; | |
3579 | } | |
aa9c2669 | 3580 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3581 | |
7c513058 | 3582 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3583 | if (!status) { |
3584 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3585 | status = nfs_post_op_update_inode(inode, res.fattr); |
3586 | if (!status) | |
3587 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3588 | } |
14c43f76 DQ |
3589 | |
3590 | ||
3591 | nfs4_label_free(res.label); | |
3592 | ||
136f2627 | 3593 | out: |
136f2627 | 3594 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3595 | return status; |
3596 | } | |
3597 | ||
3598 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3599 | { | |
3600 | struct nfs4_exception exception = { }; | |
3601 | int err; | |
3602 | do { | |
3603 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3604 | _nfs4_proc_link(inode, dir, name), | |
3605 | &exception); | |
3606 | } while (exception.retry); | |
3607 | return err; | |
3608 | } | |
3609 | ||
57dc9a57 TM |
3610 | struct nfs4_createdata { |
3611 | struct rpc_message msg; | |
3612 | struct nfs4_create_arg arg; | |
3613 | struct nfs4_create_res res; | |
3614 | struct nfs_fh fh; | |
3615 | struct nfs_fattr fattr; | |
1775fd3e | 3616 | struct nfs4_label *label; |
57dc9a57 TM |
3617 | }; |
3618 | ||
3619 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3620 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3621 | { | |
3622 | struct nfs4_createdata *data; | |
3623 | ||
3624 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3625 | if (data != NULL) { | |
3626 | struct nfs_server *server = NFS_SERVER(dir); | |
3627 | ||
14c43f76 DQ |
3628 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3629 | if (IS_ERR(data->label)) | |
3630 | goto out_free; | |
3631 | ||
57dc9a57 TM |
3632 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3633 | data->msg.rpc_argp = &data->arg; | |
3634 | data->msg.rpc_resp = &data->res; | |
3635 | data->arg.dir_fh = NFS_FH(dir); | |
3636 | data->arg.server = server; | |
3637 | data->arg.name = name; | |
3638 | data->arg.attrs = sattr; | |
3639 | data->arg.ftype = ftype; | |
aa9c2669 | 3640 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3641 | data->res.server = server; |
3642 | data->res.fh = &data->fh; | |
3643 | data->res.fattr = &data->fattr; | |
1775fd3e | 3644 | data->res.label = data->label; |
57dc9a57 | 3645 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3646 | } |
3647 | return data; | |
14c43f76 DQ |
3648 | out_free: |
3649 | kfree(data); | |
3650 | return NULL; | |
57dc9a57 TM |
3651 | } |
3652 | ||
3653 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3654 | { | |
7c513058 | 3655 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3656 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3657 | if (status == 0) { |
3658 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3659 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3660 | } |
3661 | return status; | |
3662 | } | |
3663 | ||
3664 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3665 | { | |
14c43f76 | 3666 | nfs4_label_free(data->label); |
57dc9a57 TM |
3667 | kfree(data); |
3668 | } | |
3669 | ||
4f390c15 | 3670 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3671 | struct page *page, unsigned int len, struct iattr *sattr, |
3672 | struct nfs4_label *label) | |
1da177e4 | 3673 | { |
57dc9a57 TM |
3674 | struct nfs4_createdata *data; |
3675 | int status = -ENAMETOOLONG; | |
1da177e4 | 3676 | |
94a6d753 | 3677 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3678 | goto out; |
4f390c15 | 3679 | |
57dc9a57 TM |
3680 | status = -ENOMEM; |
3681 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3682 | if (data == NULL) | |
3683 | goto out; | |
3684 | ||
3685 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3686 | data->arg.u.symlink.pages = &page; | |
3687 | data->arg.u.symlink.len = len; | |
1775fd3e | 3688 | data->arg.label = label; |
1da177e4 | 3689 | |
57dc9a57 TM |
3690 | status = nfs4_do_create(dir, dentry, data); |
3691 | ||
3692 | nfs4_free_createdata(data); | |
3693 | out: | |
1da177e4 LT |
3694 | return status; |
3695 | } | |
3696 | ||
4f390c15 | 3697 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3698 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3699 | { |
3700 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3701 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3702 | int err; |
aa9c2669 DQ |
3703 | |
3704 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3705 | ||
1da177e4 | 3706 | do { |
078ea3df TM |
3707 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3708 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3709 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3710 | &exception); |
3711 | } while (exception.retry); | |
aa9c2669 DQ |
3712 | |
3713 | nfs4_label_release_security(label); | |
1da177e4 LT |
3714 | return err; |
3715 | } | |
3716 | ||
3717 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3718 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3719 | { |
57dc9a57 TM |
3720 | struct nfs4_createdata *data; |
3721 | int status = -ENOMEM; | |
1da177e4 | 3722 | |
57dc9a57 TM |
3723 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3724 | if (data == NULL) | |
3725 | goto out; | |
3726 | ||
1775fd3e | 3727 | data->arg.label = label; |
57dc9a57 TM |
3728 | status = nfs4_do_create(dir, dentry, data); |
3729 | ||
3730 | nfs4_free_createdata(data); | |
3731 | out: | |
1da177e4 LT |
3732 | return status; |
3733 | } | |
3734 | ||
3735 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3736 | struct iattr *sattr) | |
3737 | { | |
3738 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3739 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3740 | int err; |
a8a5da99 | 3741 | |
aa9c2669 DQ |
3742 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3743 | ||
a8a5da99 | 3744 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3745 | do { |
078ea3df TM |
3746 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3747 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3748 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3749 | &exception); |
3750 | } while (exception.retry); | |
aa9c2669 DQ |
3751 | nfs4_label_release_security(label); |
3752 | ||
1da177e4 LT |
3753 | return err; |
3754 | } | |
3755 | ||
3756 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3757 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3758 | { |
3759 | struct inode *dir = dentry->d_inode; | |
3760 | struct nfs4_readdir_arg args = { | |
3761 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3762 | .pages = pages, |
1da177e4 LT |
3763 | .pgbase = 0, |
3764 | .count = count, | |
96d25e53 | 3765 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3766 | .plus = plus, |
1da177e4 LT |
3767 | }; |
3768 | struct nfs4_readdir_res res; | |
3769 | struct rpc_message msg = { | |
3770 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3771 | .rpc_argp = &args, | |
3772 | .rpc_resp = &res, | |
3773 | .rpc_cred = cred, | |
3774 | }; | |
3775 | int status; | |
3776 | ||
6de1472f AV |
3777 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
3778 | dentry, | |
eadf4598 | 3779 | (unsigned long long)cookie); |
c3f52af3 | 3780 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3781 | res.pgbase = args.pgbase; |
7c513058 | 3782 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3783 | if (status >= 0) { |
c3f52af3 | 3784 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3785 | status += args.pgbase; |
3786 | } | |
c4812998 TM |
3787 | |
3788 | nfs_invalidate_atime(dir); | |
3789 | ||
3110ff80 | 3790 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3791 | return status; |
3792 | } | |
3793 | ||
3794 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3795 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3796 | { |
3797 | struct nfs4_exception exception = { }; | |
3798 | int err; | |
3799 | do { | |
c1578b76 TM |
3800 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3801 | pages, count, plus); | |
3802 | trace_nfs4_readdir(dentry->d_inode, err); | |
3803 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3804 | &exception); |
3805 | } while (exception.retry); | |
3806 | return err; | |
3807 | } | |
3808 | ||
3809 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3810 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3811 | { |
57dc9a57 TM |
3812 | struct nfs4_createdata *data; |
3813 | int mode = sattr->ia_mode; | |
3814 | int status = -ENOMEM; | |
1da177e4 | 3815 | |
57dc9a57 TM |
3816 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3817 | if (data == NULL) | |
3818 | goto out; | |
3819 | ||
1da177e4 | 3820 | if (S_ISFIFO(mode)) |
57dc9a57 | 3821 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3822 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3823 | data->arg.ftype = NF4BLK; |
3824 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3825 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3826 | } |
3827 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3828 | data->arg.ftype = NF4CHR; |
3829 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3830 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3831 | } else if (!S_ISSOCK(mode)) { |
3832 | status = -EINVAL; | |
3833 | goto out_free; | |
1da177e4 | 3834 | } |
1775fd3e | 3835 | |
aa9c2669 | 3836 | data->arg.label = label; |
57dc9a57 | 3837 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3838 | out_free: |
57dc9a57 TM |
3839 | nfs4_free_createdata(data); |
3840 | out: | |
1da177e4 LT |
3841 | return status; |
3842 | } | |
3843 | ||
3844 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3845 | struct iattr *sattr, dev_t rdev) | |
3846 | { | |
3847 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3848 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3849 | int err; |
a8a5da99 | 3850 | |
aa9c2669 DQ |
3851 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3852 | ||
a8a5da99 | 3853 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3854 | do { |
078ea3df TM |
3855 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3856 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3857 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3858 | &exception); |
3859 | } while (exception.retry); | |
aa9c2669 DQ |
3860 | |
3861 | nfs4_label_release_security(label); | |
3862 | ||
1da177e4 LT |
3863 | return err; |
3864 | } | |
3865 | ||
3866 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3867 | struct nfs_fsstat *fsstat) | |
3868 | { | |
3869 | struct nfs4_statfs_arg args = { | |
3870 | .fh = fhandle, | |
3871 | .bitmask = server->attr_bitmask, | |
3872 | }; | |
24ad148a BH |
3873 | struct nfs4_statfs_res res = { |
3874 | .fsstat = fsstat, | |
3875 | }; | |
1da177e4 LT |
3876 | struct rpc_message msg = { |
3877 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3878 | .rpc_argp = &args, | |
24ad148a | 3879 | .rpc_resp = &res, |
1da177e4 LT |
3880 | }; |
3881 | ||
0e574af1 | 3882 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3883 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3884 | } |
3885 | ||
3886 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3887 | { | |
3888 | struct nfs4_exception exception = { }; | |
3889 | int err; | |
3890 | do { | |
3891 | err = nfs4_handle_exception(server, | |
3892 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3893 | &exception); | |
3894 | } while (exception.retry); | |
3895 | return err; | |
3896 | } | |
3897 | ||
3898 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3899 | struct nfs_fsinfo *fsinfo) | |
3900 | { | |
3901 | struct nfs4_fsinfo_arg args = { | |
3902 | .fh = fhandle, | |
3903 | .bitmask = server->attr_bitmask, | |
3904 | }; | |
3dda5e43 BH |
3905 | struct nfs4_fsinfo_res res = { |
3906 | .fsinfo = fsinfo, | |
3907 | }; | |
1da177e4 LT |
3908 | struct rpc_message msg = { |
3909 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3910 | .rpc_argp = &args, | |
3dda5e43 | 3911 | .rpc_resp = &res, |
1da177e4 LT |
3912 | }; |
3913 | ||
7c513058 | 3914 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3915 | } |
3916 | ||
3917 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3918 | { | |
3919 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3920 | unsigned long now = jiffies; |
1da177e4 LT |
3921 | int err; |
3922 | ||
3923 | do { | |
83ca7f5a | 3924 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 3925 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
3926 | if (err == 0) { |
3927 | struct nfs_client *clp = server->nfs_client; | |
3928 | ||
3929 | spin_lock(&clp->cl_lock); | |
3930 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3931 | clp->cl_last_renewal = now; | |
3932 | spin_unlock(&clp->cl_lock); | |
3933 | break; | |
3934 | } | |
3935 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3936 | } while (exception.retry); |
3937 | return err; | |
3938 | } | |
3939 | ||
3940 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3941 | { | |
e38eb650 BS |
3942 | int error; |
3943 | ||
0e574af1 | 3944 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3945 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3946 | if (error == 0) { |
3947 | /* block layout checks this! */ | |
3948 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3949 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3950 | } |
e38eb650 BS |
3951 | |
3952 | return error; | |
1da177e4 LT |
3953 | } |
3954 | ||
3955 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3956 | struct nfs_pathconf *pathconf) | |
3957 | { | |
3958 | struct nfs4_pathconf_arg args = { | |
3959 | .fh = fhandle, | |
3960 | .bitmask = server->attr_bitmask, | |
3961 | }; | |
d45b2989 BH |
3962 | struct nfs4_pathconf_res res = { |
3963 | .pathconf = pathconf, | |
3964 | }; | |
1da177e4 LT |
3965 | struct rpc_message msg = { |
3966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3967 | .rpc_argp = &args, | |
d45b2989 | 3968 | .rpc_resp = &res, |
1da177e4 LT |
3969 | }; |
3970 | ||
3971 | /* None of the pathconf attributes are mandatory to implement */ | |
3972 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3973 | memset(pathconf, 0, sizeof(*pathconf)); | |
3974 | return 0; | |
3975 | } | |
3976 | ||
0e574af1 | 3977 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3978 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3979 | } |
3980 | ||
3981 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3982 | struct nfs_pathconf *pathconf) | |
3983 | { | |
3984 | struct nfs4_exception exception = { }; | |
3985 | int err; | |
3986 | ||
3987 | do { | |
3988 | err = nfs4_handle_exception(server, | |
3989 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3990 | &exception); | |
3991 | } while (exception.retry); | |
3992 | return err; | |
3993 | } | |
3994 | ||
5521abfd | 3995 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3996 | const struct nfs_open_context *ctx, |
3997 | const struct nfs_lock_context *l_ctx, | |
3998 | fmode_t fmode) | |
3999 | { | |
4000 | const struct nfs_lockowner *lockowner = NULL; | |
4001 | ||
4002 | if (l_ctx != NULL) | |
4003 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4004 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4005 | } |
4006 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4007 | ||
5521abfd TM |
4008 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4009 | const struct nfs_open_context *ctx, | |
4010 | const struct nfs_lock_context *l_ctx, | |
4011 | fmode_t fmode) | |
4012 | { | |
4013 | nfs4_stateid current_stateid; | |
4014 | ||
e1253be0 TM |
4015 | /* If the current stateid represents a lost lock, then exit */ |
4016 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4017 | return true; | |
5521abfd TM |
4018 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4019 | } | |
4020 | ||
4021 | static bool nfs4_error_stateid_expired(int err) | |
4022 | { | |
4023 | switch (err) { | |
4024 | case -NFS4ERR_DELEG_REVOKED: | |
4025 | case -NFS4ERR_ADMIN_REVOKED: | |
4026 | case -NFS4ERR_BAD_STATEID: | |
4027 | case -NFS4ERR_STALE_STATEID: | |
4028 | case -NFS4ERR_OLD_STATEID: | |
4029 | case -NFS4ERR_OPENMODE: | |
4030 | case -NFS4ERR_EXPIRED: | |
4031 | return true; | |
4032 | } | |
4033 | return false; | |
4034 | } | |
4035 | ||
d20581aa BH |
4036 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
4037 | { | |
cd841605 | 4038 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
4039 | } |
4040 | ||
cbdabc7f | 4041 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 4042 | { |
cd841605 | 4043 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 4044 | |
cc668ab3 | 4045 | trace_nfs4_read(data, task->tk_status); |
9e33bed5 | 4046 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4047 | rpc_restart_call_prepare(task); |
ec06c096 | 4048 | return -EAGAIN; |
1da177e4 | 4049 | } |
8850df99 | 4050 | |
d20581aa | 4051 | __nfs4_read_done_cb(data); |
1da177e4 | 4052 | if (task->tk_status > 0) |
ec06c096 TM |
4053 | renew_lease(server, data->timestamp); |
4054 | return 0; | |
1da177e4 LT |
4055 | } |
4056 | ||
5521abfd TM |
4057 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
4058 | struct nfs_readargs *args) | |
4059 | { | |
4060 | ||
4061 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4062 | nfs4_stateid_is_current(&args->stateid, | |
4063 | args->context, | |
4064 | args->lock_context, | |
4065 | FMODE_READ)) | |
4066 | return false; | |
4067 | rpc_restart_call_prepare(task); | |
4068 | return true; | |
4069 | } | |
4070 | ||
cbdabc7f AA |
4071 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
4072 | { | |
4073 | ||
4074 | dprintk("--> %s\n", __func__); | |
4075 | ||
4076 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4077 | return -EAGAIN; | |
5521abfd TM |
4078 | if (nfs4_read_stateid_changed(task, &data->args)) |
4079 | return -EAGAIN; | |
d20581aa BH |
4080 | return data->read_done_cb ? data->read_done_cb(task, data) : |
4081 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
4082 | } |
4083 | ||
bdc7f021 | 4084 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 4085 | { |
1da177e4 | 4086 | data->timestamp = jiffies; |
cbdabc7f | 4087 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 4088 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
a9c92d6b | 4089 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
4090 | } |
4091 | ||
ef1820f9 | 4092 | static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
ea7c3303 | 4093 | { |
9b206149 | 4094 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4095 | &data->args.seq_args, |
4096 | &data->res.seq_res, | |
9b206149 | 4097 | task)) |
ef1820f9 N |
4098 | return 0; |
4099 | if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4100 | data->args.lock_context, FMODE_READ) == -EIO) | |
4101 | return -EIO; | |
4102 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) | |
4103 | return -EIO; | |
4104 | return 0; | |
1da177e4 LT |
4105 | } |
4106 | ||
b029bc9b | 4107 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 4108 | { |
cd841605 | 4109 | struct inode *inode = data->header->inode; |
1da177e4 | 4110 | |
cc668ab3 | 4111 | trace_nfs4_write(data, task->tk_status); |
9e33bed5 | 4112 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 4113 | rpc_restart_call_prepare(task); |
788e7a89 | 4114 | return -EAGAIN; |
1da177e4 | 4115 | } |
4f9838c7 | 4116 | if (task->tk_status >= 0) { |
1da177e4 | 4117 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 4118 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 4119 | } |
788e7a89 | 4120 | return 0; |
1da177e4 LT |
4121 | } |
4122 | ||
5521abfd TM |
4123 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
4124 | struct nfs_writeargs *args) | |
4125 | { | |
4126 | ||
4127 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4128 | nfs4_stateid_is_current(&args->stateid, | |
4129 | args->context, | |
4130 | args->lock_context, | |
4131 | FMODE_WRITE)) | |
4132 | return false; | |
4133 | rpc_restart_call_prepare(task); | |
4134 | return true; | |
4135 | } | |
4136 | ||
b029bc9b FI |
4137 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
4138 | { | |
4139 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4140 | return -EAGAIN; | |
5521abfd TM |
4141 | if (nfs4_write_stateid_changed(task, &data->args)) |
4142 | return -EAGAIN; | |
d20581aa BH |
4143 | return data->write_done_cb ? data->write_done_cb(task, data) : |
4144 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
4145 | } |
4146 | ||
5a37f851 TM |
4147 | static |
4148 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 4149 | { |
5a37f851 TM |
4150 | const struct nfs_pgio_header *hdr = data->header; |
4151 | ||
4152 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
4153 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
4154 | return false; | |
4155 | /* Otherwise, request attributes if and only if we don't hold | |
4156 | * a delegation | |
4157 | */ | |
011e2a7f | 4158 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4159 | } |
a69aef14 | 4160 | |
bdc7f021 | 4161 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 4162 | { |
cd841605 | 4163 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 4164 | |
5a37f851 | 4165 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
4166 | data->args.bitmask = NULL; |
4167 | data->res.fattr = NULL; | |
4168 | } else | |
4169 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 4170 | |
b029bc9b FI |
4171 | if (!data->write_done_cb) |
4172 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 4173 | data->res.server = server; |
1da177e4 LT |
4174 | data->timestamp = jiffies; |
4175 | ||
bdc7f021 | 4176 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
a9c92d6b | 4177 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4178 | } |
4179 | ||
ef1820f9 | 4180 | static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
c6cb80d0 | 4181 | { |
9b206149 | 4182 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
4183 | &data->args.seq_args, |
4184 | &data->res.seq_res, | |
9b206149 | 4185 | task)) |
ef1820f9 N |
4186 | return 0; |
4187 | if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
4188 | data->args.lock_context, FMODE_WRITE) == -EIO) | |
4189 | return -EIO; | |
4190 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags))) | |
4191 | return -EIO; | |
4192 | return 0; | |
1da177e4 LT |
4193 | } |
4194 | ||
0b7c0153 | 4195 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4196 | { |
d9afbd1b TM |
4197 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4198 | &data->args.seq_args, | |
4199 | &data->res.seq_res, | |
4200 | task); | |
1da177e4 LT |
4201 | } |
4202 | ||
0b7c0153 | 4203 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4204 | { |
1da177e4 | 4205 | struct inode *inode = data->inode; |
14516c3a | 4206 | |
cc668ab3 | 4207 | trace_nfs4_commit(data, task->tk_status); |
9e33bed5 | 4208 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4209 | rpc_restart_call_prepare(task); |
788e7a89 | 4210 | return -EAGAIN; |
1da177e4 | 4211 | } |
788e7a89 | 4212 | return 0; |
1da177e4 LT |
4213 | } |
4214 | ||
0b7c0153 | 4215 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4216 | { |
4217 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4218 | return -EAGAIN; | |
0b7c0153 | 4219 | return data->commit_done_cb(task, data); |
5f452431 FI |
4220 | } |
4221 | ||
0b7c0153 | 4222 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4223 | { |
788e7a89 | 4224 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4225 | |
0b7c0153 FI |
4226 | if (data->commit_done_cb == NULL) |
4227 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4228 | data->res.server = server; |
bdc7f021 | 4229 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4230 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4231 | } |
4232 | ||
9bc4e3ca CL |
4233 | struct nfs4_renewdata { |
4234 | struct nfs_client *client; | |
4235 | unsigned long timestamp; | |
4236 | }; | |
4237 | ||
1da177e4 LT |
4238 | /* |
4239 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4240 | * standalone procedure for queueing an asynchronous RENEW. | |
4241 | */ | |
9bc4e3ca | 4242 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4243 | { |
9bc4e3ca CL |
4244 | struct nfs4_renewdata *data = calldata; |
4245 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4246 | |
0851de06 AB |
4247 | if (atomic_read(&clp->cl_count) > 1) |
4248 | nfs4_schedule_state_renewal(clp); | |
4249 | nfs_put_client(clp); | |
9bc4e3ca | 4250 | kfree(data); |
dc96aef9 AB |
4251 | } |
4252 | ||
9bc4e3ca | 4253 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4254 | { |
9bc4e3ca CL |
4255 | struct nfs4_renewdata *data = calldata; |
4256 | struct nfs_client *clp = data->client; | |
4257 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4258 | |
c6d01c6f | 4259 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4260 | switch (task->tk_status) { |
4261 | case 0: | |
4262 | break; | |
4263 | case -NFS4ERR_LEASE_MOVED: | |
4264 | nfs4_schedule_lease_moved_recovery(clp); | |
4265 | break; | |
4266 | default: | |
95baa25c | 4267 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4268 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4269 | return; | |
4270 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4271 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4272 | return; |
4273 | } | |
4274 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4275 | } |
452e9352 | 4276 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4277 | } |
4278 | ||
963d8fe5 TM |
4279 | static const struct rpc_call_ops nfs4_renew_ops = { |
4280 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4281 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4282 | }; |
4283 | ||
2f60ea6b | 4284 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4285 | { |
4286 | struct rpc_message msg = { | |
4287 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4288 | .rpc_argp = clp, | |
b4454fe1 | 4289 | .rpc_cred = cred, |
1da177e4 | 4290 | }; |
9bc4e3ca | 4291 | struct nfs4_renewdata *data; |
1da177e4 | 4292 | |
2f60ea6b TM |
4293 | if (renew_flags == 0) |
4294 | return 0; | |
0851de06 AB |
4295 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4296 | return -EIO; | |
b569ad34 | 4297 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4298 | if (data == NULL) |
4299 | return -ENOMEM; | |
4300 | data->client = clp; | |
4301 | data->timestamp = jiffies; | |
bc7a05ca | 4302 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4303 | &nfs4_renew_ops, data); |
1da177e4 LT |
4304 | } |
4305 | ||
8534d4ec | 4306 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4307 | { |
4308 | struct rpc_message msg = { | |
4309 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4310 | .rpc_argp = clp, | |
b4454fe1 | 4311 | .rpc_cred = cred, |
1da177e4 LT |
4312 | }; |
4313 | unsigned long now = jiffies; | |
4314 | int status; | |
4315 | ||
bc7a05ca | 4316 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4317 | if (status < 0) |
4318 | return status; | |
452e9352 | 4319 | do_renew_lease(clp, now); |
1da177e4 LT |
4320 | return 0; |
4321 | } | |
4322 | ||
aa1870af BF |
4323 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4324 | { | |
7dd7d959 | 4325 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4326 | } |
4327 | ||
21f498c2 TM |
4328 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4329 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4330 | * the stack. |
4331 | */ | |
21f498c2 | 4332 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4333 | |
e9e3d724 NH |
4334 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4335 | struct page **pages, unsigned int *pgbase) | |
4336 | { | |
4337 | struct page *newpage, **spages; | |
4338 | int rc = 0; | |
4339 | size_t len; | |
4340 | spages = pages; | |
4341 | ||
4342 | do { | |
21f498c2 | 4343 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4344 | newpage = alloc_page(GFP_KERNEL); |
4345 | ||
4346 | if (newpage == NULL) | |
4347 | goto unwind; | |
4348 | memcpy(page_address(newpage), buf, len); | |
4349 | buf += len; | |
4350 | buflen -= len; | |
4351 | *pages++ = newpage; | |
4352 | rc++; | |
4353 | } while (buflen != 0); | |
4354 | ||
4355 | return rc; | |
4356 | ||
4357 | unwind: | |
4358 | for(; rc > 0; rc--) | |
4359 | __free_page(spages[rc-1]); | |
4360 | return -ENOMEM; | |
4361 | } | |
4362 | ||
e50a1c2e BF |
4363 | struct nfs4_cached_acl { |
4364 | int cached; | |
4365 | size_t len; | |
3e9d4154 | 4366 | char data[0]; |
e50a1c2e BF |
4367 | }; |
4368 | ||
4369 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4370 | { | |
4371 | struct nfs_inode *nfsi = NFS_I(inode); | |
4372 | ||
4373 | spin_lock(&inode->i_lock); | |
4374 | kfree(nfsi->nfs4_acl); | |
4375 | nfsi->nfs4_acl = acl; | |
4376 | spin_unlock(&inode->i_lock); | |
4377 | } | |
4378 | ||
4379 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4380 | { | |
4381 | nfs4_set_cached_acl(inode, NULL); | |
4382 | } | |
4383 | ||
4384 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4385 | { | |
4386 | struct nfs_inode *nfsi = NFS_I(inode); | |
4387 | struct nfs4_cached_acl *acl; | |
4388 | int ret = -ENOENT; | |
4389 | ||
4390 | spin_lock(&inode->i_lock); | |
4391 | acl = nfsi->nfs4_acl; | |
4392 | if (acl == NULL) | |
4393 | goto out; | |
4394 | if (buf == NULL) /* user is just asking for length */ | |
4395 | goto out_len; | |
4396 | if (acl->cached == 0) | |
4397 | goto out; | |
4398 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4399 | if (acl->len > buflen) | |
4400 | goto out; | |
4401 | memcpy(buf, acl->data, acl->len); | |
4402 | out_len: | |
4403 | ret = acl->len; | |
4404 | out: | |
4405 | spin_unlock(&inode->i_lock); | |
4406 | return ret; | |
4407 | } | |
4408 | ||
5794d21e | 4409 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4410 | { |
4411 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4412 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4413 | |
1f1ea6c2 | 4414 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4415 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4416 | if (acl == NULL) |
4417 | goto out; | |
4418 | acl->cached = 1; | |
5794d21e | 4419 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4420 | } else { |
4421 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4422 | if (acl == NULL) | |
4423 | goto out; | |
4424 | acl->cached = 0; | |
4425 | } | |
4426 | acl->len = acl_len; | |
4427 | out: | |
4428 | nfs4_set_cached_acl(inode, acl); | |
4429 | } | |
4430 | ||
bf118a34 AA |
4431 | /* |
4432 | * The getxattr API returns the required buffer length when called with a | |
4433 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4434 | * the required buf. On a NULL buf, we send a page of data to the server | |
4435 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4436 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4437 | * the cache. If not so, we throw away the page, and cache the required | |
4438 | * length. The next getxattr call will then produce another round trip to | |
4439 | * the server, this time with the input buf of the required size. | |
4440 | */ | |
16b4289c | 4441 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4442 | { |
bf118a34 | 4443 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4444 | struct nfs_getaclargs args = { |
4445 | .fh = NFS_FH(inode), | |
4446 | .acl_pages = pages, | |
4447 | .acl_len = buflen, | |
4448 | }; | |
663c79b3 BH |
4449 | struct nfs_getaclres res = { |
4450 | .acl_len = buflen, | |
4451 | }; | |
aa1870af BF |
4452 | struct rpc_message msg = { |
4453 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4454 | .rpc_argp = &args, | |
663c79b3 | 4455 | .rpc_resp = &res, |
aa1870af | 4456 | }; |
21f498c2 TM |
4457 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4458 | int ret = -ENOMEM, i; | |
aa1870af | 4459 | |
bf118a34 AA |
4460 | /* As long as we're doing a round trip to the server anyway, |
4461 | * let's be prepared for a page of acl data. */ | |
4462 | if (npages == 0) | |
4463 | npages = 1; | |
21f498c2 TM |
4464 | if (npages > ARRAY_SIZE(pages)) |
4465 | return -ERANGE; | |
5a006899 | 4466 | |
bf118a34 AA |
4467 | for (i = 0; i < npages; i++) { |
4468 | pages[i] = alloc_page(GFP_KERNEL); | |
4469 | if (!pages[i]) | |
4470 | goto out_free; | |
e50a1c2e | 4471 | } |
5a006899 SP |
4472 | |
4473 | /* for decoding across pages */ | |
4474 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4475 | if (!res.acl_scratch) | |
4476 | goto out_free; | |
4477 | ||
bf118a34 AA |
4478 | args.acl_len = npages * PAGE_SIZE; |
4479 | args.acl_pgbase = 0; | |
5a006899 | 4480 | |
de040bec | 4481 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4482 | __func__, buf, buflen, npages, args.acl_len); |
4483 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4484 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4485 | if (ret) |
4486 | goto out_free; | |
bf118a34 | 4487 | |
1f1ea6c2 TM |
4488 | /* Handle the case where the passed-in buffer is too short */ |
4489 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4490 | /* Did the user only issue a request for the acl length? */ | |
4491 | if (buf == NULL) | |
4492 | goto out_ok; | |
e50a1c2e | 4493 | ret = -ERANGE; |
1f1ea6c2 | 4494 | goto out_free; |
e50a1c2e | 4495 | } |
1f1ea6c2 | 4496 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4497 | if (buf) { |
4498 | if (res.acl_len > buflen) { | |
4499 | ret = -ERANGE; | |
4500 | goto out_free; | |
4501 | } | |
1f1ea6c2 | 4502 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4503 | } |
1f1ea6c2 TM |
4504 | out_ok: |
4505 | ret = res.acl_len; | |
e50a1c2e | 4506 | out_free: |
bf118a34 AA |
4507 | for (i = 0; i < npages; i++) |
4508 | if (pages[i]) | |
4509 | __free_page(pages[i]); | |
331818f1 TM |
4510 | if (res.acl_scratch) |
4511 | __free_page(res.acl_scratch); | |
aa1870af BF |
4512 | return ret; |
4513 | } | |
4514 | ||
16b4289c TM |
4515 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4516 | { | |
4517 | struct nfs4_exception exception = { }; | |
4518 | ssize_t ret; | |
4519 | do { | |
4520 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4521 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4522 | if (ret >= 0) |
4523 | break; | |
4524 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4525 | } while (exception.retry); | |
4526 | return ret; | |
4527 | } | |
4528 | ||
e50a1c2e BF |
4529 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4530 | { | |
4531 | struct nfs_server *server = NFS_SERVER(inode); | |
4532 | int ret; | |
4533 | ||
4534 | if (!nfs4_server_supports_acls(server)) | |
4535 | return -EOPNOTSUPP; | |
4536 | ret = nfs_revalidate_inode(server, inode); | |
4537 | if (ret < 0) | |
4538 | return ret; | |
08a22b39 AK |
4539 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4540 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4541 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4542 | if (ret != -ENOENT) | |
bf118a34 AA |
4543 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4544 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4545 | return ret; |
4546 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4547 | } | |
4548 | ||
16b4289c | 4549 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4550 | { |
4551 | struct nfs_server *server = NFS_SERVER(inode); | |
4552 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4553 | struct nfs_setaclargs arg = { | |
4554 | .fh = NFS_FH(inode), | |
4555 | .acl_pages = pages, | |
4556 | .acl_len = buflen, | |
4557 | }; | |
73c403a9 | 4558 | struct nfs_setaclres res; |
4b580ee3 BF |
4559 | struct rpc_message msg = { |
4560 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4561 | .rpc_argp = &arg, | |
73c403a9 | 4562 | .rpc_resp = &res, |
4b580ee3 | 4563 | }; |
21f498c2 | 4564 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4565 | int ret, i; |
4b580ee3 BF |
4566 | |
4567 | if (!nfs4_server_supports_acls(server)) | |
4568 | return -EOPNOTSUPP; | |
21f498c2 TM |
4569 | if (npages > ARRAY_SIZE(pages)) |
4570 | return -ERANGE; | |
e9e3d724 NH |
4571 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4572 | if (i < 0) | |
4573 | return i; | |
57ec14c5 | 4574 | nfs4_inode_return_delegation(inode); |
7c513058 | 4575 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4576 | |
4577 | /* | |
4578 | * Free each page after tx, so the only ref left is | |
4579 | * held by the network stack | |
4580 | */ | |
4581 | for (; i > 0; i--) | |
4582 | put_page(pages[i-1]); | |
4583 | ||
08a22b39 AK |
4584 | /* |
4585 | * Acl update can result in inode attribute update. | |
4586 | * so mark the attribute cache invalid. | |
4587 | */ | |
4588 | spin_lock(&inode->i_lock); | |
4589 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4590 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4591 | nfs_access_zap_cache(inode); |
4592 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4593 | return ret; |
4594 | } | |
4595 | ||
16b4289c TM |
4596 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4597 | { | |
4598 | struct nfs4_exception exception = { }; | |
4599 | int err; | |
4600 | do { | |
c1578b76 TM |
4601 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4602 | trace_nfs4_set_acl(inode, err); | |
4603 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4604 | &exception); |
4605 | } while (exception.retry); | |
4606 | return err; | |
4607 | } | |
4608 | ||
aa9c2669 DQ |
4609 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4610 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4611 | size_t buflen) | |
4612 | { | |
4613 | struct nfs_server *server = NFS_SERVER(inode); | |
4614 | struct nfs_fattr fattr; | |
4615 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4616 | ||
4617 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4618 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4619 | .fh = NFS_FH(inode), |
4620 | .bitmask = bitmask, | |
4621 | }; | |
4622 | struct nfs4_getattr_res res = { | |
4623 | .fattr = &fattr, | |
4624 | .label = &label, | |
4625 | .server = server, | |
4626 | }; | |
4627 | struct rpc_message msg = { | |
4628 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4629 | .rpc_argp = &arg, |
aa9c2669 DQ |
4630 | .rpc_resp = &res, |
4631 | }; | |
4632 | int ret; | |
4633 | ||
4634 | nfs_fattr_init(&fattr); | |
4635 | ||
fcb63a9b | 4636 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4637 | if (ret) |
4638 | return ret; | |
4639 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4640 | return -ENOENT; | |
4641 | if (buflen < label.len) | |
4642 | return -ERANGE; | |
4643 | return 0; | |
4644 | } | |
4645 | ||
4646 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4647 | size_t buflen) | |
4648 | { | |
4649 | struct nfs4_exception exception = { }; | |
4650 | int err; | |
4651 | ||
4652 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4653 | return -EOPNOTSUPP; | |
4654 | ||
4655 | do { | |
c1578b76 TM |
4656 | err = _nfs4_get_security_label(inode, buf, buflen); |
4657 | trace_nfs4_get_security_label(inode, err); | |
4658 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4659 | &exception); |
4660 | } while (exception.retry); | |
4661 | return err; | |
4662 | } | |
4663 | ||
4664 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4665 | struct nfs4_label *ilabel, | |
4666 | struct nfs_fattr *fattr, | |
4667 | struct nfs4_label *olabel) | |
4668 | { | |
4669 | ||
4670 | struct iattr sattr = {0}; | |
4671 | struct nfs_server *server = NFS_SERVER(inode); | |
4672 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4673 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4674 | .fh = NFS_FH(inode), |
4675 | .iap = &sattr, | |
4676 | .server = server, | |
4677 | .bitmask = bitmask, | |
4678 | .label = ilabel, | |
4679 | }; | |
4680 | struct nfs_setattrres res = { | |
4681 | .fattr = fattr, | |
4682 | .label = olabel, | |
4683 | .server = server, | |
4684 | }; | |
4685 | struct rpc_message msg = { | |
4686 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4687 | .rpc_argp = &arg, |
aa9c2669 DQ |
4688 | .rpc_resp = &res, |
4689 | }; | |
4690 | int status; | |
4691 | ||
12207f69 | 4692 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4693 | |
12207f69 | 4694 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4695 | if (status) |
4696 | dprintk("%s failed: %d\n", __func__, status); | |
4697 | ||
4698 | return status; | |
4699 | } | |
4700 | ||
4701 | static int nfs4_do_set_security_label(struct inode *inode, | |
4702 | struct nfs4_label *ilabel, | |
4703 | struct nfs_fattr *fattr, | |
4704 | struct nfs4_label *olabel) | |
4705 | { | |
4706 | struct nfs4_exception exception = { }; | |
4707 | int err; | |
4708 | ||
4709 | do { | |
c1578b76 TM |
4710 | err = _nfs4_do_set_security_label(inode, ilabel, |
4711 | fattr, olabel); | |
4712 | trace_nfs4_set_security_label(inode, err); | |
4713 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4714 | &exception); |
4715 | } while (exception.retry); | |
4716 | return err; | |
4717 | } | |
4718 | ||
4719 | static int | |
4720 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4721 | { | |
4722 | struct nfs4_label ilabel, *olabel = NULL; | |
4723 | struct nfs_fattr fattr; | |
4724 | struct rpc_cred *cred; | |
4725 | struct inode *inode = dentry->d_inode; | |
4726 | int status; | |
4727 | ||
4728 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4729 | return -EOPNOTSUPP; | |
4730 | ||
4731 | nfs_fattr_init(&fattr); | |
4732 | ||
4733 | ilabel.pi = 0; | |
4734 | ilabel.lfs = 0; | |
4735 | ilabel.label = (char *)buf; | |
4736 | ilabel.len = buflen; | |
4737 | ||
4738 | cred = rpc_lookup_cred(); | |
4739 | if (IS_ERR(cred)) | |
4740 | return PTR_ERR(cred); | |
4741 | ||
4742 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4743 | if (IS_ERR(olabel)) { | |
4744 | status = -PTR_ERR(olabel); | |
4745 | goto out; | |
4746 | } | |
4747 | ||
4748 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4749 | if (status == 0) | |
4750 | nfs_setsecurity(inode, &fattr, olabel); | |
4751 | ||
4752 | nfs4_label_free(olabel); | |
4753 | out: | |
4754 | put_rpccred(cred); | |
4755 | return status; | |
4756 | } | |
4757 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4758 | ||
4759 | ||
1da177e4 | 4760 | static int |
aa5190d0 | 4761 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4762 | { |
aa5190d0 TM |
4763 | struct nfs_client *clp = server->nfs_client; |
4764 | ||
4765 | if (task->tk_status >= 0) | |
1da177e4 LT |
4766 | return 0; |
4767 | switch(task->tk_status) { | |
a1d0b5ee | 4768 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4769 | case -NFS4ERR_ADMIN_REVOKED: |
4770 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4771 | if (state == NULL) |
4772 | break; | |
4773 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4774 | case -NFS4ERR_OPENMODE: |
4775 | if (state == NULL) | |
4776 | break; | |
5d422301 | 4777 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4778 | goto recovery_failed; |
0400a6b0 | 4779 | goto wait_on_recovery; |
0ced63d1 | 4780 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4781 | if (state != NULL) { |
4782 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 4783 | goto recovery_failed; |
5d422301 | 4784 | } |
1da177e4 | 4785 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4786 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4787 | nfs4_schedule_lease_recovery(clp); |
4788 | goto wait_on_recovery; | |
519ae255 CL |
4789 | case -NFS4ERR_MOVED: |
4790 | if (nfs4_schedule_migration_recovery(server) < 0) | |
4791 | goto recovery_failed; | |
4792 | goto wait_on_recovery; | |
8ef2f8d4 CL |
4793 | case -NFS4ERR_LEASE_MOVED: |
4794 | nfs4_schedule_lease_moved_recovery(clp); | |
4795 | goto wait_on_recovery; | |
4745e315 AA |
4796 | #if defined(CONFIG_NFS_V4_1) |
4797 | case -NFS4ERR_BADSESSION: | |
4798 | case -NFS4ERR_BADSLOT: | |
4799 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4800 | case -NFS4ERR_DEADSESSION: | |
4801 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4802 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4803 | case -NFS4ERR_SEQ_MISORDERED: | |
4804 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4805 | task->tk_status); | |
9f594791 | 4806 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 4807 | goto wait_on_recovery; |
4745e315 | 4808 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4809 | case -NFS4ERR_DELAY: |
aa5190d0 | 4810 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4811 | case -NFS4ERR_GRACE: |
1da177e4 | 4812 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 4813 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 4814 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 4815 | goto restart_call; |
1da177e4 LT |
4816 | } |
4817 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4818 | return 0; | |
9f51a78e | 4819 | recovery_failed: |
5d422301 TM |
4820 | task->tk_status = -EIO; |
4821 | return 0; | |
0400a6b0 | 4822 | wait_on_recovery: |
a2c0b9e2 | 4823 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4824 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4825 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
4826 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
4827 | goto recovery_failed; | |
f1478c13 | 4828 | restart_call: |
a2c0b9e2 TM |
4829 | task->tk_status = 0; |
4830 | return -EAGAIN; | |
1da177e4 LT |
4831 | } |
4832 | ||
f092075d CL |
4833 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4834 | nfs4_verifier *bootverf) | |
cd93710e CL |
4835 | { |
4836 | __be32 verf[2]; | |
4837 | ||
2c820d9a CL |
4838 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4839 | /* An impossible timestamp guarantees this value | |
4840 | * will never match a generated boot time. */ | |
4841 | verf[0] = 0; | |
17f26b12 | 4842 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4843 | } else { |
f092075d | 4844 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4845 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4846 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4847 | } |
cd93710e CL |
4848 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4849 | } | |
4850 | ||
e984a55a CL |
4851 | static unsigned int |
4852 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4853 | char *buf, size_t len) | |
4854 | { | |
4855 | unsigned int result; | |
4856 | ||
4857 | rcu_read_lock(); | |
4858 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4859 | clp->cl_ipaddr, | |
4860 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4861 | RPC_DISPLAY_ADDR), | |
4862 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4863 | RPC_DISPLAY_PROTO)); | |
4864 | rcu_read_unlock(); | |
4865 | return result; | |
4866 | } | |
4867 | ||
4868 | static unsigned int | |
4869 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4870 | char *buf, size_t len) | |
4871 | { | |
55b59293 | 4872 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4873 | |
4874 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4875 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4876 | clp->rpc_ops->version, | |
4877 | clp->cl_minorversion, | |
4878 | nfs4_client_id_uniquifier, | |
4879 | nodename); | |
e984a55a CL |
4880 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4881 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4882 | nodename); |
e984a55a CL |
4883 | } |
4884 | ||
706cb8db CL |
4885 | /* |
4886 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
4887 | * services. Advertise one based on the address family of the | |
4888 | * clientaddr. | |
4889 | */ | |
4890 | static unsigned int | |
4891 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
4892 | { | |
4893 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
4894 | return scnprintf(buf, len, "tcp6"); | |
4895 | else | |
4896 | return scnprintf(buf, len, "tcp"); | |
4897 | } | |
4898 | ||
6bbb4ae8 CL |
4899 | /** |
4900 | * nfs4_proc_setclientid - Negotiate client ID | |
4901 | * @clp: state data structure | |
4902 | * @program: RPC program for NFSv4 callback service | |
4903 | * @port: IP port number for NFS4 callback service | |
4904 | * @cred: RPC credential to use for this call | |
4905 | * @res: where to place the result | |
4906 | * | |
4907 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4908 | */ | |
bb8b27e5 TM |
4909 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4910 | unsigned short port, struct rpc_cred *cred, | |
4911 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4912 | { |
4913 | nfs4_verifier sc_verifier; | |
4914 | struct nfs4_setclientid setclientid = { | |
4915 | .sc_verifier = &sc_verifier, | |
4916 | .sc_prog = program, | |
f4eecd5d | 4917 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4918 | }; |
4919 | struct rpc_message msg = { | |
4920 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4921 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4922 | .rpc_resp = res, |
286d7d6a | 4923 | .rpc_cred = cred, |
1da177e4 | 4924 | }; |
6bbb4ae8 | 4925 | int status; |
1da177e4 | 4926 | |
de734831 | 4927 | /* nfs_client_id4 */ |
f092075d | 4928 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4929 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4930 | setclientid.sc_name_len = | |
4931 | nfs4_init_uniform_client_string(clp, | |
4932 | setclientid.sc_name, | |
4933 | sizeof(setclientid.sc_name)); | |
4934 | else | |
4935 | setclientid.sc_name_len = | |
4936 | nfs4_init_nonuniform_client_string(clp, | |
4937 | setclientid.sc_name, | |
4938 | sizeof(setclientid.sc_name)); | |
de734831 | 4939 | /* cb_client4 */ |
706cb8db CL |
4940 | setclientid.sc_netid_len = |
4941 | nfs4_init_callback_netid(clp, | |
4942 | setclientid.sc_netid, | |
4943 | sizeof(setclientid.sc_netid)); | |
de734831 | 4944 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 4945 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4946 | clp->cl_ipaddr, port >> 8, port & 255); |
4947 | ||
6bbb4ae8 CL |
4948 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4949 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4950 | setclientid.sc_name_len, setclientid.sc_name); | |
4951 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4952 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4953 | dprintk("NFS reply setclientid: %d\n", status); |
4954 | return status; | |
1da177e4 LT |
4955 | } |
4956 | ||
6bbb4ae8 CL |
4957 | /** |
4958 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4959 | * @clp: state data structure | |
4960 | * @res: result of a previous SETCLIENTID | |
4961 | * @cred: RPC credential to use for this call | |
4962 | * | |
4963 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4964 | */ | |
fd954ae1 | 4965 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4966 | struct nfs4_setclientid_res *arg, |
4967 | struct rpc_cred *cred) | |
1da177e4 | 4968 | { |
1da177e4 LT |
4969 | struct rpc_message msg = { |
4970 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4971 | .rpc_argp = arg, |
286d7d6a | 4972 | .rpc_cred = cred, |
1da177e4 | 4973 | }; |
1da177e4 LT |
4974 | int status; |
4975 | ||
6bbb4ae8 CL |
4976 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4977 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4978 | clp->cl_clientid); | |
1bd714f2 | 4979 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4980 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4981 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4982 | return status; |
4983 | } | |
4984 | ||
fe650407 TM |
4985 | struct nfs4_delegreturndata { |
4986 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4987 | struct nfs4_delegreturnres res; |
fe650407 TM |
4988 | struct nfs_fh fh; |
4989 | nfs4_stateid stateid; | |
26e976a8 | 4990 | unsigned long timestamp; |
fa178f29 | 4991 | struct nfs_fattr fattr; |
fe650407 TM |
4992 | int rpc_status; |
4993 | }; | |
4994 | ||
fe650407 TM |
4995 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4996 | { | |
4997 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4998 | |
14516c3a TM |
4999 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5000 | return; | |
938e1010 | 5001 | |
ca8acf8d | 5002 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5003 | switch (task->tk_status) { |
79708861 | 5004 | case 0: |
fa178f29 | 5005 | renew_lease(data->res.server, data->timestamp); |
79708861 | 5006 | break; |
c97cf606 TM |
5007 | case -NFS4ERR_ADMIN_REVOKED: |
5008 | case -NFS4ERR_DELEG_REVOKED: | |
5009 | case -NFS4ERR_BAD_STATEID: | |
5010 | case -NFS4ERR_OLD_STATEID: | |
5011 | case -NFS4ERR_STALE_STATEID: | |
5012 | case -NFS4ERR_EXPIRED: | |
5013 | task->tk_status = 0; | |
5014 | break; | |
79708861 RL |
5015 | default: |
5016 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
5017 | -EAGAIN) { | |
d00c5d43 | 5018 | rpc_restart_call_prepare(task); |
79708861 RL |
5019 | return; |
5020 | } | |
5021 | } | |
5022 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5023 | } |
5024 | ||
5025 | static void nfs4_delegreturn_release(void *calldata) | |
5026 | { | |
fe650407 TM |
5027 | kfree(calldata); |
5028 | } | |
5029 | ||
938e1010 AA |
5030 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5031 | { | |
5032 | struct nfs4_delegreturndata *d_data; | |
5033 | ||
5034 | d_data = (struct nfs4_delegreturndata *)data; | |
5035 | ||
d9afbd1b TM |
5036 | nfs4_setup_sequence(d_data->res.server, |
5037 | &d_data->args.seq_args, | |
5038 | &d_data->res.seq_res, | |
5039 | task); | |
938e1010 | 5040 | } |
938e1010 | 5041 | |
c8d149f3 | 5042 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5043 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5044 | .rpc_call_done = nfs4_delegreturn_done, |
5045 | .rpc_release = nfs4_delegreturn_release, | |
5046 | }; | |
5047 | ||
e6f81075 | 5048 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5049 | { |
5050 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5051 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5052 | struct rpc_task *task; |
5138fde0 TM |
5053 | struct rpc_message msg = { |
5054 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5055 | .rpc_cred = cred, | |
5056 | }; | |
c970aa85 TM |
5057 | struct rpc_task_setup task_setup_data = { |
5058 | .rpc_client = server->client, | |
5138fde0 | 5059 | .rpc_message = &msg, |
c970aa85 TM |
5060 | .callback_ops = &nfs4_delegreturn_ops, |
5061 | .flags = RPC_TASK_ASYNC, | |
5062 | }; | |
e6f81075 | 5063 | int status = 0; |
fe650407 | 5064 | |
8535b2be | 5065 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5066 | if (data == NULL) |
5067 | return -ENOMEM; | |
a9c92d6b | 5068 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5069 | data->args.fhandle = &data->fh; |
5070 | data->args.stateid = &data->stateid; | |
9e907fec | 5071 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5072 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5073 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5074 | data->res.fattr = &data->fattr; |
5075 | data->res.server = server; | |
5138fde0 | 5076 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5077 | data->timestamp = jiffies; |
fe650407 TM |
5078 | data->rpc_status = 0; |
5079 | ||
c970aa85 | 5080 | task_setup_data.callback_data = data; |
1174dd1f TM |
5081 | msg.rpc_argp = &data->args; |
5082 | msg.rpc_resp = &data->res; | |
c970aa85 | 5083 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5084 | if (IS_ERR(task)) |
fe650407 | 5085 | return PTR_ERR(task); |
e6f81075 TM |
5086 | if (!issync) |
5087 | goto out; | |
fe650407 | 5088 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5089 | if (status != 0) |
5090 | goto out; | |
5091 | status = data->rpc_status; | |
e144cbcc TM |
5092 | if (status == 0) |
5093 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5094 | else | |
5095 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5096 | out: |
e6b3c4db | 5097 | rpc_put_task(task); |
fe650407 | 5098 | return status; |
1da177e4 LT |
5099 | } |
5100 | ||
e6f81075 | 5101 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5102 | { |
5103 | struct nfs_server *server = NFS_SERVER(inode); | |
5104 | struct nfs4_exception exception = { }; | |
5105 | int err; | |
5106 | do { | |
e6f81075 | 5107 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5108 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5109 | switch (err) { |
5110 | case -NFS4ERR_STALE_STATEID: | |
5111 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5112 | case 0: |
5113 | return 0; | |
5114 | } | |
5115 | err = nfs4_handle_exception(server, err, &exception); | |
5116 | } while (exception.retry); | |
5117 | return err; | |
5118 | } | |
5119 | ||
5120 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5121 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5122 | ||
5123 | /* | |
5124 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5125 | */ | |
5126 | static unsigned long | |
5127 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5128 | { | |
416ad3c9 | 5129 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5130 | timeout <<= 1; |
5131 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5132 | return NFS4_LOCK_MAXTIMEOUT; | |
5133 | return timeout; | |
5134 | } | |
5135 | ||
1da177e4 LT |
5136 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5137 | { | |
5138 | struct inode *inode = state->inode; | |
5139 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5140 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5141 | struct nfs_lockt_args arg = { |
1da177e4 | 5142 | .fh = NFS_FH(inode), |
911d1aaf | 5143 | .fl = request, |
1da177e4 | 5144 | }; |
911d1aaf TM |
5145 | struct nfs_lockt_res res = { |
5146 | .denied = request, | |
1da177e4 LT |
5147 | }; |
5148 | struct rpc_message msg = { | |
5149 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5150 | .rpc_argp = &arg, | |
5151 | .rpc_resp = &res, | |
5152 | .rpc_cred = state->owner->so_cred, | |
5153 | }; | |
1da177e4 LT |
5154 | struct nfs4_lock_state *lsp; |
5155 | int status; | |
5156 | ||
911d1aaf | 5157 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5158 | status = nfs4_set_lock_state(state, request); |
5159 | if (status != 0) | |
5160 | goto out; | |
5161 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5162 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5163 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5164 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5165 | switch (status) { |
5166 | case 0: | |
5167 | request->fl_type = F_UNLCK; | |
5168 | break; | |
5169 | case -NFS4ERR_DENIED: | |
5170 | status = 0; | |
1da177e4 | 5171 | } |
70cc6487 | 5172 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5173 | request->fl_ops = NULL; |
8d0a8a9d | 5174 | out: |
1da177e4 LT |
5175 | return status; |
5176 | } | |
5177 | ||
5178 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5179 | { | |
5180 | struct nfs4_exception exception = { }; | |
5181 | int err; | |
5182 | ||
5183 | do { | |
d1b748a5 TM |
5184 | err = _nfs4_proc_getlk(state, cmd, request); |
5185 | trace_nfs4_get_lock(request, state, cmd, err); | |
5186 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5187 | &exception); |
5188 | } while (exception.retry); | |
5189 | return err; | |
5190 | } | |
5191 | ||
5192 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5193 | { | |
5194 | int res = 0; | |
5195 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5196 | case FL_POSIX: | |
5197 | res = posix_lock_file_wait(file, fl); | |
5198 | break; | |
5199 | case FL_FLOCK: | |
5200 | res = flock_lock_file_wait(file, fl); | |
5201 | break; | |
5202 | default: | |
5203 | BUG(); | |
5204 | } | |
1da177e4 LT |
5205 | return res; |
5206 | } | |
5207 | ||
faf5f49c | 5208 | struct nfs4_unlockdata { |
911d1aaf TM |
5209 | struct nfs_locku_args arg; |
5210 | struct nfs_locku_res res; | |
faf5f49c TM |
5211 | struct nfs4_lock_state *lsp; |
5212 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5213 | struct file_lock fl; |
5214 | const struct nfs_server *server; | |
26e976a8 | 5215 | unsigned long timestamp; |
faf5f49c TM |
5216 | }; |
5217 | ||
911d1aaf TM |
5218 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5219 | struct nfs_open_context *ctx, | |
5220 | struct nfs4_lock_state *lsp, | |
5221 | struct nfs_seqid *seqid) | |
5222 | { | |
5223 | struct nfs4_unlockdata *p; | |
5224 | struct inode *inode = lsp->ls_state->inode; | |
5225 | ||
8535b2be | 5226 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5227 | if (p == NULL) |
5228 | return NULL; | |
5229 | p->arg.fh = NFS_FH(inode); | |
5230 | p->arg.fl = &p->fl; | |
5231 | p->arg.seqid = seqid; | |
c1d51931 | 5232 | p->res.seqid = seqid; |
911d1aaf TM |
5233 | p->arg.stateid = &lsp->ls_stateid; |
5234 | p->lsp = lsp; | |
5235 | atomic_inc(&lsp->ls_count); | |
5236 | /* Ensure we don't close file until we're done freeing locks! */ | |
5237 | p->ctx = get_nfs_open_context(ctx); | |
5238 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5239 | p->server = NFS_SERVER(inode); | |
5240 | return p; | |
5241 | } | |
5242 | ||
06f814a3 | 5243 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5244 | { |
963d8fe5 | 5245 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5246 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5247 | nfs4_put_lock_state(calldata->lsp); |
5248 | put_nfs_open_context(calldata->ctx); | |
5249 | kfree(calldata); | |
faf5f49c TM |
5250 | } |
5251 | ||
963d8fe5 | 5252 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5253 | { |
963d8fe5 | 5254 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5255 | |
14516c3a TM |
5256 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5257 | return; | |
faf5f49c TM |
5258 | switch (task->tk_status) { |
5259 | case 0: | |
f597c537 TM |
5260 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5261 | &calldata->res.stateid); | |
26e976a8 | 5262 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5263 | break; |
9e33bed5 TM |
5264 | case -NFS4ERR_BAD_STATEID: |
5265 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5266 | case -NFS4ERR_STALE_STATEID: |
5267 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5268 | break; |
5269 | default: | |
9e33bed5 | 5270 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5271 | rpc_restart_call_prepare(task); |
faf5f49c | 5272 | } |
2b1bc308 | 5273 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5274 | } |
5275 | ||
4ce70ada | 5276 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5277 | { |
4ce70ada | 5278 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5279 | |
911d1aaf | 5280 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5281 | goto out_wait; |
795a88c9 | 5282 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5283 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5284 | goto out_no_action; |
faf5f49c | 5285 | } |
26e976a8 | 5286 | calldata->timestamp = jiffies; |
035168ab | 5287 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5288 | &calldata->arg.seq_args, |
2240a9e2 TM |
5289 | &calldata->res.seq_res, |
5290 | task) != 0) | |
5291 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5292 | return; |
5293 | out_no_action: | |
5294 | task->tk_action = NULL; | |
5295 | out_wait: | |
5296 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5297 | } |
5298 | ||
963d8fe5 | 5299 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5300 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5301 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5302 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5303 | }; |
5304 | ||
a5d16a4d TM |
5305 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5306 | struct nfs_open_context *ctx, | |
5307 | struct nfs4_lock_state *lsp, | |
5308 | struct nfs_seqid *seqid) | |
5309 | { | |
5310 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5311 | struct rpc_message msg = { |
5312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5313 | .rpc_cred = ctx->cred, | |
5314 | }; | |
c970aa85 TM |
5315 | struct rpc_task_setup task_setup_data = { |
5316 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5317 | .rpc_message = &msg, |
c970aa85 | 5318 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5319 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5320 | .flags = RPC_TASK_ASYNC, |
5321 | }; | |
a5d16a4d | 5322 | |
fa940720 WAA |
5323 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5324 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5325 | ||
137d6aca FF |
5326 | /* Ensure this is an unlock - when canceling a lock, the |
5327 | * canceled lock is passed in, and it won't be an unlock. | |
5328 | */ | |
5329 | fl->fl_type = F_UNLCK; | |
5330 | ||
a5d16a4d TM |
5331 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5332 | if (data == NULL) { | |
5333 | nfs_free_seqid(seqid); | |
5334 | return ERR_PTR(-ENOMEM); | |
5335 | } | |
5336 | ||
a9c92d6b | 5337 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5338 | msg.rpc_argp = &data->arg; |
5339 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5340 | task_setup_data.callback_data = data; |
5341 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5342 | } |
5343 | ||
faf5f49c TM |
5344 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5345 | { | |
65b62a29 TM |
5346 | struct inode *inode = state->inode; |
5347 | struct nfs4_state_owner *sp = state->owner; | |
5348 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5349 | struct nfs_seqid *seqid; |
1da177e4 | 5350 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5351 | struct rpc_task *task; |
5352 | int status = 0; | |
536ff0f8 | 5353 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5354 | |
8d0a8a9d | 5355 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5356 | /* Unlock _before_ we do the RPC call */ |
5357 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5358 | /* Exclude nfs_delegation_claim_locks() */ |
5359 | mutex_lock(&sp->so_delegreturn_mutex); | |
5360 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5361 | down_read(&nfsi->rwsem); |
5362 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5363 | up_read(&nfsi->rwsem); | |
65b62a29 | 5364 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5365 | goto out; |
19e03c57 TM |
5366 | } |
5367 | up_read(&nfsi->rwsem); | |
65b62a29 | 5368 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5369 | if (status != 0) |
9b073574 TM |
5370 | goto out; |
5371 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5372 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5373 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5374 | goto out; | |
8535b2be | 5375 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5376 | status = -ENOMEM; |
911d1aaf | 5377 | if (seqid == NULL) |
9b073574 | 5378 | goto out; |
cd3758e3 | 5379 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5380 | status = PTR_ERR(task); |
5381 | if (IS_ERR(task)) | |
9b073574 | 5382 | goto out; |
a5d16a4d | 5383 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5384 | rpc_put_task(task); |
9b073574 | 5385 | out: |
536ff0f8 | 5386 | request->fl_flags = fl_flags; |
d1b748a5 | 5387 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5388 | return status; |
5389 | } | |
5390 | ||
a5d16a4d TM |
5391 | struct nfs4_lockdata { |
5392 | struct nfs_lock_args arg; | |
5393 | struct nfs_lock_res res; | |
5394 | struct nfs4_lock_state *lsp; | |
5395 | struct nfs_open_context *ctx; | |
5396 | struct file_lock fl; | |
26e976a8 | 5397 | unsigned long timestamp; |
a5d16a4d TM |
5398 | int rpc_status; |
5399 | int cancelled; | |
66179efe | 5400 | struct nfs_server *server; |
a5d16a4d TM |
5401 | }; |
5402 | ||
5403 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5404 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5405 | gfp_t gfp_mask) | |
1da177e4 | 5406 | { |
a5d16a4d TM |
5407 | struct nfs4_lockdata *p; |
5408 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5409 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5410 | |
8535b2be | 5411 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5412 | if (p == NULL) |
5413 | return NULL; | |
5414 | ||
5415 | p->arg.fh = NFS_FH(inode); | |
5416 | p->arg.fl = &p->fl; | |
8535b2be | 5417 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5418 | if (p->arg.open_seqid == NULL) |
5419 | goto out_free; | |
8535b2be | 5420 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5421 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5422 | goto out_free_seqid; |
a5d16a4d | 5423 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5424 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5425 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5426 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5427 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5428 | p->lsp = lsp; |
66179efe | 5429 | p->server = server; |
a5d16a4d TM |
5430 | atomic_inc(&lsp->ls_count); |
5431 | p->ctx = get_nfs_open_context(ctx); | |
5432 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5433 | return p; | |
2f74c0a0 TM |
5434 | out_free_seqid: |
5435 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5436 | out_free: |
5437 | kfree(p); | |
5438 | return NULL; | |
5439 | } | |
5440 | ||
5441 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5442 | { | |
5443 | struct nfs4_lockdata *data = calldata; | |
5444 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5445 | |
3110ff80 | 5446 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5447 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5448 | goto out_wait; |
a5d16a4d TM |
5449 | /* Do we need to do an open_to_lock_owner? */ |
5450 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5451 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5452 | goto out_release_lock_seqid; |
8fe72bac | 5453 | } |
8e472f33 | 5454 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5455 | data->arg.new_lock_owner = 1; |
c1d51931 | 5456 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5457 | } else |
5458 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5459 | if (!nfs4_valid_open_stateid(state)) { |
5460 | data->rpc_status = -EBADF; | |
5461 | task->tk_action = NULL; | |
5462 | goto out_release_open_seqid; | |
5463 | } | |
26e976a8 | 5464 | data->timestamp = jiffies; |
035168ab TM |
5465 | if (nfs4_setup_sequence(data->server, |
5466 | &data->arg.seq_args, | |
2240a9e2 | 5467 | &data->res.seq_res, |
d9afbd1b | 5468 | task) == 0) |
66179efe | 5469 | return; |
5d422301 | 5470 | out_release_open_seqid: |
2240a9e2 TM |
5471 | nfs_release_seqid(data->arg.open_seqid); |
5472 | out_release_lock_seqid: | |
5473 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5474 | out_wait: |
5475 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5476 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5477 | } |
5478 | ||
a5d16a4d TM |
5479 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5480 | { | |
5481 | struct nfs4_lockdata *data = calldata; | |
5482 | ||
3110ff80 | 5483 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5484 | |
14516c3a TM |
5485 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5486 | return; | |
66179efe | 5487 | |
a5d16a4d | 5488 | data->rpc_status = task->tk_status; |
a5d16a4d | 5489 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5490 | if (data->rpc_status == 0) |
5491 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5492 | else | |
5493 | goto out; | |
5494 | } | |
5495 | if (data->rpc_status == 0) { | |
f597c537 | 5496 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5497 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5498 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5499 | } |
a5d16a4d | 5500 | out: |
3110ff80 | 5501 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5502 | } |
5503 | ||
5504 | static void nfs4_lock_release(void *calldata) | |
5505 | { | |
5506 | struct nfs4_lockdata *data = calldata; | |
5507 | ||
3110ff80 | 5508 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5509 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5510 | if (data->cancelled != 0) { |
5511 | struct rpc_task *task; | |
5512 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5513 | data->arg.lock_seqid); | |
5514 | if (!IS_ERR(task)) | |
bf294b41 | 5515 | rpc_put_task_async(task); |
3110ff80 | 5516 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5517 | } else |
5518 | nfs_free_seqid(data->arg.lock_seqid); | |
5519 | nfs4_put_lock_state(data->lsp); | |
5520 | put_nfs_open_context(data->ctx); | |
5521 | kfree(data); | |
3110ff80 | 5522 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5523 | } |
5524 | ||
5525 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5526 | .rpc_call_prepare = nfs4_lock_prepare, | |
5527 | .rpc_call_done = nfs4_lock_done, | |
5528 | .rpc_release = nfs4_lock_release, | |
5529 | }; | |
5530 | ||
2bee72a6 TM |
5531 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5532 | { | |
2bee72a6 TM |
5533 | switch (error) { |
5534 | case -NFS4ERR_ADMIN_REVOKED: | |
5535 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5536 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5537 | if (new_lock_owner != 0 || |
795a88c9 | 5538 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5539 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5540 | break; |
5541 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5542 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5543 | case -NFS4ERR_EXPIRED: |
5544 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5545 | }; |
5546 | } | |
5547 | ||
afe6c27c | 5548 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5549 | { |
5550 | struct nfs4_lockdata *data; | |
5551 | struct rpc_task *task; | |
5138fde0 TM |
5552 | struct rpc_message msg = { |
5553 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5554 | .rpc_cred = state->owner->so_cred, | |
5555 | }; | |
c970aa85 TM |
5556 | struct rpc_task_setup task_setup_data = { |
5557 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5558 | .rpc_message = &msg, |
c970aa85 | 5559 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5560 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5561 | .flags = RPC_TASK_ASYNC, |
5562 | }; | |
a5d16a4d TM |
5563 | int ret; |
5564 | ||
3110ff80 | 5565 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5566 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5567 | fl->fl_u.nfs4_fl.owner, |
5568 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5569 | if (data == NULL) |
5570 | return -ENOMEM; | |
5571 | if (IS_SETLKW(cmd)) | |
5572 | data->arg.block = 1; | |
a9c92d6b | 5573 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5574 | msg.rpc_argp = &data->arg; |
5575 | msg.rpc_resp = &data->res; | |
c970aa85 | 5576 | task_setup_data.callback_data = data; |
8fe72bac TM |
5577 | if (recovery_type > NFS_LOCK_NEW) { |
5578 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5579 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5580 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5581 | } | |
c970aa85 | 5582 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5583 | if (IS_ERR(task)) |
a5d16a4d | 5584 | return PTR_ERR(task); |
a5d16a4d TM |
5585 | ret = nfs4_wait_for_completion_rpc_task(task); |
5586 | if (ret == 0) { | |
5587 | ret = data->rpc_status; | |
2bee72a6 TM |
5588 | if (ret) |
5589 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5590 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5591 | } else |
5592 | data->cancelled = 1; | |
e6b3c4db | 5593 | rpc_put_task(task); |
3110ff80 | 5594 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5595 | return ret; |
1da177e4 LT |
5596 | } |
5597 | ||
5598 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5599 | { | |
202b50dc | 5600 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5601 | struct nfs4_exception exception = { |
5602 | .inode = state->inode, | |
5603 | }; | |
202b50dc TM |
5604 | int err; |
5605 | ||
5606 | do { | |
42a2d13e TM |
5607 | /* Cache the lock if possible... */ |
5608 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5609 | return 0; | |
afe6c27c | 5610 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5611 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5612 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5613 | break; |
5614 | nfs4_handle_exception(server, err, &exception); | |
5615 | } while (exception.retry); | |
5616 | return err; | |
1da177e4 LT |
5617 | } |
5618 | ||
5619 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5620 | { | |
202b50dc | 5621 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5622 | struct nfs4_exception exception = { |
5623 | .inode = state->inode, | |
5624 | }; | |
202b50dc TM |
5625 | int err; |
5626 | ||
6bfc93ef TM |
5627 | err = nfs4_set_lock_state(state, request); |
5628 | if (err != 0) | |
5629 | return err; | |
f6de7a39 | 5630 | if (!recover_lost_locks) { |
ef1820f9 N |
5631 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5632 | return 0; | |
5633 | } | |
202b50dc | 5634 | do { |
42a2d13e TM |
5635 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5636 | return 0; | |
afe6c27c | 5637 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5638 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5639 | switch (err) { |
5640 | default: | |
5641 | goto out; | |
5642 | case -NFS4ERR_GRACE: | |
5643 | case -NFS4ERR_DELAY: | |
5644 | nfs4_handle_exception(server, err, &exception); | |
5645 | err = 0; | |
5646 | } | |
202b50dc | 5647 | } while (exception.retry); |
a9ed2e25 | 5648 | out: |
202b50dc | 5649 | return err; |
1da177e4 LT |
5650 | } |
5651 | ||
f062eb6c | 5652 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5653 | /** |
5654 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5655 | * | |
5656 | * @state: NFSv4 state for an inode | |
5657 | * | |
5658 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5659 | * Otherwise a negative NFS4ERR value is returned. | |
5660 | */ | |
b01dd1d8 | 5661 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5662 | { |
eb64cf96 | 5663 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5664 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5665 | struct nfs_server *server = NFS_SERVER(state->inode); |
5666 | ||
b01dd1d8 | 5667 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5668 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5669 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5670 | ||
5671 | status = nfs41_test_stateid(server, | |
5672 | &lsp->ls_stateid, | |
5673 | cred); | |
08cb47fa | 5674 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5675 | if (status != NFS_OK) { |
3e60ffdd CL |
5676 | /* Free the stateid unless the server |
5677 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5678 | if (status != -NFS4ERR_BAD_STATEID) |
5679 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5680 | &lsp->ls_stateid, |
5681 | cred); | |
795a88c9 | 5682 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5683 | ret = status; |
5684 | } | |
5685 | } | |
5686 | }; | |
5687 | ||
5688 | return ret; | |
5689 | } | |
5690 | ||
5691 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5692 | { | |
5693 | int status = NFS_OK; | |
5694 | ||
5695 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5696 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5697 | if (status != NFS_OK) |
5698 | status = nfs4_lock_expired(state, request); | |
5699 | return status; | |
f062eb6c BS |
5700 | } |
5701 | #endif | |
5702 | ||
1da177e4 LT |
5703 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5704 | { | |
9a99af49 | 5705 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5706 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5707 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5708 | unsigned int seq; |
8e469ebd | 5709 | int status = -ENOLCK; |
1da177e4 | 5710 | |
8e469ebd TM |
5711 | if ((fl_flags & FL_POSIX) && |
5712 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5713 | goto out; | |
6bfc93ef | 5714 | /* Is this a delegated open? */ |
6bfc93ef TM |
5715 | status = nfs4_set_lock_state(state, request); |
5716 | if (status != 0) | |
5717 | goto out; | |
01c3b861 TM |
5718 | request->fl_flags |= FL_ACCESS; |
5719 | status = do_vfs_lock(request->fl_file, request); | |
5720 | if (status < 0) | |
5721 | goto out; | |
19e03c57 | 5722 | down_read(&nfsi->rwsem); |
01c3b861 | 5723 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5724 | /* Yes: cache locks! */ |
01c3b861 | 5725 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5726 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5727 | status = do_vfs_lock(request->fl_file, request); | |
5728 | goto out_unlock; | |
01c3b861 | 5729 | } |
9a99af49 TM |
5730 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5731 | up_read(&nfsi->rwsem); | |
afe6c27c | 5732 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5733 | if (status != 0) |
9a99af49 TM |
5734 | goto out; |
5735 | down_read(&nfsi->rwsem); | |
5736 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5737 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5738 | goto out_unlock; |
9a99af49 | 5739 | } |
6bfc93ef | 5740 | /* Note: we always want to sleep here! */ |
01c3b861 | 5741 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5742 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5743 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5744 | "manager!\n", __func__); | |
01c3b861 | 5745 | out_unlock: |
19e03c57 | 5746 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5747 | out: |
5748 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5749 | return status; |
5750 | } | |
5751 | ||
5752 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5753 | { | |
a1d0b5ee TM |
5754 | struct nfs4_exception exception = { |
5755 | .state = state, | |
05ffe24f | 5756 | .inode = state->inode, |
a1d0b5ee | 5757 | }; |
1da177e4 LT |
5758 | int err; |
5759 | ||
5760 | do { | |
965b5d67 | 5761 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5762 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5763 | if (err == -NFS4ERR_DENIED) |
5764 | err = -EAGAIN; | |
1da177e4 | 5765 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5766 | err, &exception); |
1da177e4 LT |
5767 | } while (exception.retry); |
5768 | return err; | |
5769 | } | |
5770 | ||
5771 | static int | |
5772 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5773 | { | |
5774 | struct nfs_open_context *ctx; | |
5775 | struct nfs4_state *state; | |
5776 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5777 | int status; | |
5778 | ||
5779 | /* verify open state */ | |
cd3758e3 | 5780 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5781 | state = ctx->state; |
5782 | ||
5783 | if (request->fl_start < 0 || request->fl_end < 0) | |
5784 | return -EINVAL; | |
5785 | ||
d953126a TM |
5786 | if (IS_GETLK(cmd)) { |
5787 | if (state != NULL) | |
5788 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5789 | return 0; | |
5790 | } | |
1da177e4 LT |
5791 | |
5792 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5793 | return -EINVAL; | |
5794 | ||
d953126a TM |
5795 | if (request->fl_type == F_UNLCK) { |
5796 | if (state != NULL) | |
5797 | return nfs4_proc_unlck(state, cmd, request); | |
5798 | return 0; | |
5799 | } | |
1da177e4 | 5800 | |
d953126a TM |
5801 | if (state == NULL) |
5802 | return -ENOLCK; | |
55725513 TM |
5803 | /* |
5804 | * Don't rely on the VFS having checked the file open mode, | |
5805 | * since it won't do this for flock() locks. | |
5806 | */ | |
f44106e2 | 5807 | switch (request->fl_type) { |
55725513 TM |
5808 | case F_RDLCK: |
5809 | if (!(filp->f_mode & FMODE_READ)) | |
5810 | return -EBADF; | |
5811 | break; | |
5812 | case F_WRLCK: | |
5813 | if (!(filp->f_mode & FMODE_WRITE)) | |
5814 | return -EBADF; | |
5815 | } | |
5816 | ||
1da177e4 LT |
5817 | do { |
5818 | status = nfs4_proc_setlk(state, cmd, request); | |
5819 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5820 | break; | |
5821 | timeout = nfs4_set_lock_task_retry(timeout); | |
5822 | status = -ERESTARTSYS; | |
5823 | if (signalled()) | |
5824 | break; | |
5825 | } while(status < 0); | |
1da177e4 LT |
5826 | return status; |
5827 | } | |
5828 | ||
db4f2e63 | 5829 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5830 | { |
5831 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5832 | int err; |
5833 | ||
5834 | err = nfs4_set_lock_state(state, fl); | |
5835 | if (err != 0) | |
db4f2e63 | 5836 | return err; |
4a706fa0 | 5837 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5838 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5839 | } |
6b3b5496 | 5840 | |
cf470c3e TM |
5841 | struct nfs_release_lockowner_data { |
5842 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5843 | struct nfs_server *server; |
cf470c3e | 5844 | struct nfs_release_lockowner_args args; |
b7e63a10 | 5845 | struct nfs_release_lockowner_res res; |
60ea6812 | 5846 | unsigned long timestamp; |
cf470c3e TM |
5847 | }; |
5848 | ||
fbd4bfd1 CL |
5849 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
5850 | { | |
5851 | struct nfs_release_lockowner_data *data = calldata; | |
5852 | nfs40_setup_sequence(data->server, | |
b7e63a10 | 5853 | &data->args.seq_args, &data->res.seq_res, task); |
60ea6812 | 5854 | data->timestamp = jiffies; |
fbd4bfd1 CL |
5855 | } |
5856 | ||
5857 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
5858 | { | |
5859 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
5860 | struct nfs_server *server = data->server; |
5861 | ||
b7e63a10 | 5862 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
5863 | |
5864 | switch (task->tk_status) { | |
5865 | case 0: | |
5866 | renew_lease(server, data->timestamp); | |
5867 | break; | |
5868 | case -NFS4ERR_STALE_CLIENTID: | |
5869 | case -NFS4ERR_EXPIRED: | |
5870 | case -NFS4ERR_LEASE_MOVED: | |
5871 | case -NFS4ERR_DELAY: | |
5872 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) | |
5873 | rpc_restart_call_prepare(task); | |
5874 | } | |
fbd4bfd1 CL |
5875 | } |
5876 | ||
d3c7b7cc TM |
5877 | static void nfs4_release_lockowner_release(void *calldata) |
5878 | { | |
cf470c3e | 5879 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5880 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5881 | kfree(calldata); |
5882 | } | |
5883 | ||
17280175 | 5884 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
5885 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
5886 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
5887 | .rpc_release = nfs4_release_lockowner_release, |
5888 | }; | |
5889 | ||
c8b2d0bf | 5890 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5891 | { |
cf470c3e | 5892 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5893 | struct rpc_message msg = { |
5894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5895 | }; | |
5896 | ||
5897 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e | 5898 | return -EINVAL; |
fbd4bfd1 | 5899 | |
cf470c3e TM |
5900 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5901 | if (!data) | |
5902 | return -ENOMEM; | |
5903 | data->lsp = lsp; | |
5ae67c4f | 5904 | data->server = server; |
cf470c3e TM |
5905 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5906 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5907 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 5908 | |
cf470c3e | 5909 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
5910 | msg.rpc_resp = &data->res; |
5911 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e TM |
5912 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
5913 | return 0; | |
d3c7b7cc TM |
5914 | } |
5915 | ||
aa1870af BF |
5916 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5917 | ||
64c2ce8b AK |
5918 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5919 | const void *buf, size_t buflen, | |
5920 | int flags, int type) | |
6b3b5496 | 5921 | { |
64c2ce8b AK |
5922 | if (strcmp(key, "") != 0) |
5923 | return -EINVAL; | |
4b580ee3 | 5924 | |
64c2ce8b | 5925 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5926 | } |
5927 | ||
64c2ce8b AK |
5928 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5929 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5930 | { |
64c2ce8b AK |
5931 | if (strcmp(key, "") != 0) |
5932 | return -EINVAL; | |
aa1870af | 5933 | |
64c2ce8b | 5934 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5935 | } |
5936 | ||
64c2ce8b AK |
5937 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5938 | size_t list_len, const char *name, | |
5939 | size_t name_len, int type) | |
6b3b5496 | 5940 | { |
64c2ce8b | 5941 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5942 | |
096455a2 BF |
5943 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5944 | return 0; | |
64c2ce8b AK |
5945 | |
5946 | if (list && len <= list_len) | |
5947 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5948 | return len; |
6b3b5496 BF |
5949 | } |
5950 | ||
c9bccef6 DQ |
5951 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5952 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5953 | { | |
5954 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5955 | } | |
5956 | ||
5957 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5958 | const void *buf, size_t buflen, | |
5959 | int flags, int type) | |
5960 | { | |
5961 | if (security_ismaclabel(key)) | |
5962 | return nfs4_set_security_label(dentry, buf, buflen); | |
5963 | ||
5964 | return -EOPNOTSUPP; | |
5965 | } | |
5966 | ||
5967 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5968 | void *buf, size_t buflen, int type) | |
5969 | { | |
5970 | if (security_ismaclabel(key)) | |
5971 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5972 | return -EOPNOTSUPP; | |
5973 | } | |
5974 | ||
5975 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5976 | size_t list_len, const char *name, | |
5977 | size_t name_len, int type) | |
5978 | { | |
5979 | size_t len = 0; | |
5980 | ||
5981 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5982 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5983 | if (list && len <= list_len) | |
5984 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5985 | } | |
5986 | return len; | |
5987 | } | |
5988 | ||
5989 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5990 | .prefix = XATTR_SECURITY_PREFIX, | |
5991 | .list = nfs4_xattr_list_nfs4_label, | |
5992 | .get = nfs4_xattr_get_nfs4_label, | |
5993 | .set = nfs4_xattr_set_nfs4_label, | |
5994 | }; | |
5995 | #endif | |
5996 | ||
5997 | ||
533eb461 AA |
5998 | /* |
5999 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6000 | */ | |
69aaaae1 TM |
6001 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6002 | { | |
533eb461 AA |
6003 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6004 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6005 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6006 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6007 | return; |
6008 | ||
6009 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6010 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6011 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6012 | fattr->nlink = 2; | |
6013 | } | |
6014 | ||
f05d147f BS |
6015 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6016 | const struct qstr *name, | |
6017 | struct nfs4_fs_locations *fs_locations, | |
6018 | struct page *page) | |
683b57b4 TM |
6019 | { |
6020 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6021 | u32 bitmask[3] = { |
361e624f | 6022 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6023 | }; |
6024 | struct nfs4_fs_locations_arg args = { | |
6025 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6026 | .name = name, |
683b57b4 TM |
6027 | .page = page, |
6028 | .bitmask = bitmask, | |
6029 | }; | |
22958463 BH |
6030 | struct nfs4_fs_locations_res res = { |
6031 | .fs_locations = fs_locations, | |
6032 | }; | |
683b57b4 TM |
6033 | struct rpc_message msg = { |
6034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6035 | .rpc_argp = &args, | |
22958463 | 6036 | .rpc_resp = &res, |
683b57b4 TM |
6037 | }; |
6038 | int status; | |
6039 | ||
3110ff80 | 6040 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6041 | |
6042 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6043 | * is not supported */ | |
6044 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6045 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6046 | else | |
6047 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6048 | ||
c228fd3a | 6049 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6050 | fs_locations->server = server; |
830b8e33 | 6051 | fs_locations->nlocations = 0; |
f05d147f | 6052 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6053 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6054 | return status; |
6055 | } | |
6056 | ||
f05d147f BS |
6057 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6058 | const struct qstr *name, | |
6059 | struct nfs4_fs_locations *fs_locations, | |
6060 | struct page *page) | |
db0a9593 BS |
6061 | { |
6062 | struct nfs4_exception exception = { }; | |
6063 | int err; | |
6064 | do { | |
078ea3df TM |
6065 | err = _nfs4_proc_fs_locations(client, dir, name, |
6066 | fs_locations, page); | |
6067 | trace_nfs4_get_fs_locations(dir, name, err); | |
6068 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6069 | &exception); |
6070 | } while (exception.retry); | |
6071 | return err; | |
6072 | } | |
6073 | ||
b03d735b CL |
6074 | /* |
6075 | * This operation also signals the server that this client is | |
6076 | * performing migration recovery. The server can stop returning | |
6077 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6078 | * appended to this compound to identify the client ID which is | |
6079 | * performing recovery. | |
6080 | */ | |
6081 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6082 | struct nfs4_fs_locations *locations, | |
6083 | struct page *page, struct rpc_cred *cred) | |
6084 | { | |
6085 | struct nfs_server *server = NFS_SERVER(inode); | |
6086 | struct rpc_clnt *clnt = server->client; | |
6087 | u32 bitmask[2] = { | |
6088 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6089 | }; | |
6090 | struct nfs4_fs_locations_arg args = { | |
6091 | .clientid = server->nfs_client->cl_clientid, | |
6092 | .fh = NFS_FH(inode), | |
6093 | .page = page, | |
6094 | .bitmask = bitmask, | |
6095 | .migration = 1, /* skip LOOKUP */ | |
6096 | .renew = 1, /* append RENEW */ | |
6097 | }; | |
6098 | struct nfs4_fs_locations_res res = { | |
6099 | .fs_locations = locations, | |
6100 | .migration = 1, | |
6101 | .renew = 1, | |
6102 | }; | |
6103 | struct rpc_message msg = { | |
6104 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6105 | .rpc_argp = &args, | |
6106 | .rpc_resp = &res, | |
6107 | .rpc_cred = cred, | |
6108 | }; | |
6109 | unsigned long now = jiffies; | |
6110 | int status; | |
6111 | ||
6112 | nfs_fattr_init(&locations->fattr); | |
6113 | locations->server = server; | |
6114 | locations->nlocations = 0; | |
6115 | ||
6116 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6117 | nfs4_set_sequence_privileged(&args.seq_args); | |
6118 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6119 | &args.seq_args, &res.seq_res); | |
6120 | if (status) | |
6121 | return status; | |
6122 | ||
6123 | renew_lease(server, now); | |
6124 | return 0; | |
6125 | } | |
6126 | ||
6127 | #ifdef CONFIG_NFS_V4_1 | |
6128 | ||
6129 | /* | |
6130 | * This operation also signals the server that this client is | |
6131 | * performing migration recovery. The server can stop asserting | |
6132 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6133 | * performing this operation is identified in the SEQUENCE | |
6134 | * operation in this compound. | |
6135 | * | |
6136 | * When the client supports GETATTR(fs_locations_info), it can | |
6137 | * be plumbed in here. | |
6138 | */ | |
6139 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6140 | struct nfs4_fs_locations *locations, | |
6141 | struct page *page, struct rpc_cred *cred) | |
6142 | { | |
6143 | struct nfs_server *server = NFS_SERVER(inode); | |
6144 | struct rpc_clnt *clnt = server->client; | |
6145 | u32 bitmask[2] = { | |
6146 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6147 | }; | |
6148 | struct nfs4_fs_locations_arg args = { | |
6149 | .fh = NFS_FH(inode), | |
6150 | .page = page, | |
6151 | .bitmask = bitmask, | |
6152 | .migration = 1, /* skip LOOKUP */ | |
6153 | }; | |
6154 | struct nfs4_fs_locations_res res = { | |
6155 | .fs_locations = locations, | |
6156 | .migration = 1, | |
6157 | }; | |
6158 | struct rpc_message msg = { | |
6159 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6160 | .rpc_argp = &args, | |
6161 | .rpc_resp = &res, | |
6162 | .rpc_cred = cred, | |
6163 | }; | |
6164 | int status; | |
6165 | ||
6166 | nfs_fattr_init(&locations->fattr); | |
6167 | locations->server = server; | |
6168 | locations->nlocations = 0; | |
6169 | ||
6170 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6171 | nfs4_set_sequence_privileged(&args.seq_args); | |
6172 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6173 | &args.seq_args, &res.seq_res); | |
6174 | if (status == NFS4_OK && | |
6175 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6176 | status = -NFS4ERR_LEASE_MOVED; | |
6177 | return status; | |
6178 | } | |
6179 | ||
6180 | #endif /* CONFIG_NFS_V4_1 */ | |
6181 | ||
6182 | /** | |
6183 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6184 | * @inode: inode on FSID that is migrating | |
6185 | * @locations: result of query | |
6186 | * @page: buffer | |
6187 | * @cred: credential to use for this operation | |
6188 | * | |
6189 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6190 | * operation failed, or a negative errno if a local error occurred. | |
6191 | * | |
6192 | * On success, "locations" is filled in, but if the server has | |
6193 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6194 | * asserted. | |
6195 | * | |
6196 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6197 | * from this client that require migration recovery. | |
6198 | */ | |
6199 | int nfs4_proc_get_locations(struct inode *inode, | |
6200 | struct nfs4_fs_locations *locations, | |
6201 | struct page *page, struct rpc_cred *cred) | |
6202 | { | |
6203 | struct nfs_server *server = NFS_SERVER(inode); | |
6204 | struct nfs_client *clp = server->nfs_client; | |
6205 | const struct nfs4_mig_recovery_ops *ops = | |
6206 | clp->cl_mvops->mig_recovery_ops; | |
6207 | struct nfs4_exception exception = { }; | |
6208 | int status; | |
6209 | ||
6210 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6211 | (unsigned long long)server->fsid.major, | |
6212 | (unsigned long long)server->fsid.minor, | |
6213 | clp->cl_hostname); | |
6214 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6215 | ||
6216 | do { | |
6217 | status = ops->get_locations(inode, locations, page, cred); | |
6218 | if (status != -NFS4ERR_DELAY) | |
6219 | break; | |
6220 | nfs4_handle_exception(server, status, &exception); | |
6221 | } while (exception.retry); | |
6222 | return status; | |
6223 | } | |
6224 | ||
44c99933 CL |
6225 | /* |
6226 | * This operation also signals the server that this client is | |
6227 | * performing "lease moved" recovery. The server can stop | |
6228 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6229 | * is appended to this compound to identify the client ID which is | |
6230 | * performing recovery. | |
6231 | */ | |
6232 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6233 | { | |
6234 | struct nfs_server *server = NFS_SERVER(inode); | |
6235 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6236 | struct rpc_clnt *clnt = server->client; | |
6237 | struct nfs4_fsid_present_arg args = { | |
6238 | .fh = NFS_FH(inode), | |
6239 | .clientid = clp->cl_clientid, | |
6240 | .renew = 1, /* append RENEW */ | |
6241 | }; | |
6242 | struct nfs4_fsid_present_res res = { | |
6243 | .renew = 1, | |
6244 | }; | |
6245 | struct rpc_message msg = { | |
6246 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6247 | .rpc_argp = &args, | |
6248 | .rpc_resp = &res, | |
6249 | .rpc_cred = cred, | |
6250 | }; | |
6251 | unsigned long now = jiffies; | |
6252 | int status; | |
6253 | ||
6254 | res.fh = nfs_alloc_fhandle(); | |
6255 | if (res.fh == NULL) | |
6256 | return -ENOMEM; | |
6257 | ||
6258 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6259 | nfs4_set_sequence_privileged(&args.seq_args); | |
6260 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6261 | &args.seq_args, &res.seq_res); | |
6262 | nfs_free_fhandle(res.fh); | |
6263 | if (status) | |
6264 | return status; | |
6265 | ||
6266 | do_renew_lease(clp, now); | |
6267 | return 0; | |
6268 | } | |
6269 | ||
6270 | #ifdef CONFIG_NFS_V4_1 | |
6271 | ||
6272 | /* | |
6273 | * This operation also signals the server that this client is | |
6274 | * performing "lease moved" recovery. The server can stop asserting | |
6275 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6276 | * this operation is identified in the SEQUENCE operation in this | |
6277 | * compound. | |
6278 | */ | |
6279 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6280 | { | |
6281 | struct nfs_server *server = NFS_SERVER(inode); | |
6282 | struct rpc_clnt *clnt = server->client; | |
6283 | struct nfs4_fsid_present_arg args = { | |
6284 | .fh = NFS_FH(inode), | |
6285 | }; | |
6286 | struct nfs4_fsid_present_res res = { | |
6287 | }; | |
6288 | struct rpc_message msg = { | |
6289 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6290 | .rpc_argp = &args, | |
6291 | .rpc_resp = &res, | |
6292 | .rpc_cred = cred, | |
6293 | }; | |
6294 | int status; | |
6295 | ||
6296 | res.fh = nfs_alloc_fhandle(); | |
6297 | if (res.fh == NULL) | |
6298 | return -ENOMEM; | |
6299 | ||
6300 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6301 | nfs4_set_sequence_privileged(&args.seq_args); | |
6302 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6303 | &args.seq_args, &res.seq_res); | |
6304 | nfs_free_fhandle(res.fh); | |
6305 | if (status == NFS4_OK && | |
6306 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6307 | status = -NFS4ERR_LEASE_MOVED; | |
6308 | return status; | |
6309 | } | |
6310 | ||
6311 | #endif /* CONFIG_NFS_V4_1 */ | |
6312 | ||
6313 | /** | |
6314 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6315 | * @inode: inode on FSID to check | |
6316 | * @cred: credential to use for this operation | |
6317 | * | |
6318 | * Server indicates whether the FSID is present, moved, or not | |
6319 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6320 | * condition for this client ID. | |
6321 | * | |
6322 | * Returns NFS4_OK if the FSID is present on this server, | |
6323 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6324 | * NFS4ERR code if some error occurred on the server, or a | |
6325 | * negative errno if a local failure occurred. | |
6326 | */ | |
6327 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6328 | { | |
6329 | struct nfs_server *server = NFS_SERVER(inode); | |
6330 | struct nfs_client *clp = server->nfs_client; | |
6331 | const struct nfs4_mig_recovery_ops *ops = | |
6332 | clp->cl_mvops->mig_recovery_ops; | |
6333 | struct nfs4_exception exception = { }; | |
6334 | int status; | |
6335 | ||
6336 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6337 | (unsigned long long)server->fsid.major, | |
6338 | (unsigned long long)server->fsid.minor, | |
6339 | clp->cl_hostname); | |
6340 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6341 | ||
6342 | do { | |
6343 | status = ops->fsid_present(inode, cred); | |
6344 | if (status != -NFS4ERR_DELAY) | |
6345 | break; | |
6346 | nfs4_handle_exception(server, status, &exception); | |
6347 | } while (exception.retry); | |
6348 | return status; | |
6349 | } | |
6350 | ||
5ec16a85 | 6351 | /** |
a5250def WAA |
6352 | * If 'use_integrity' is true and the state managment nfs_client |
6353 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6354 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6355 | * Considerations sections. Otherwise, just use the user cred with the | |
6356 | * filesystem's rpc_client. | |
5ec16a85 | 6357 | */ |
a5250def | 6358 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6359 | { |
6360 | int status; | |
6361 | struct nfs4_secinfo_arg args = { | |
6362 | .dir_fh = NFS_FH(dir), | |
6363 | .name = name, | |
6364 | }; | |
6365 | struct nfs4_secinfo_res res = { | |
6366 | .flavors = flavors, | |
6367 | }; | |
6368 | struct rpc_message msg = { | |
6369 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6370 | .rpc_argp = &args, | |
6371 | .rpc_resp = &res, | |
6372 | }; | |
a5250def | 6373 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6374 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6375 | |
6376 | if (use_integrity) { | |
6377 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6378 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6379 | msg.rpc_cred = cred; | |
a5250def | 6380 | } |
5a5ea0d4 BS |
6381 | |
6382 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6383 | |
6384 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6385 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6386 | ||
a5250def WAA |
6387 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6388 | &res.seq_res, 0); | |
5a5ea0d4 | 6389 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6390 | |
7cb852df WAA |
6391 | if (cred) |
6392 | put_rpccred(cred); | |
a5250def | 6393 | |
5a5ea0d4 BS |
6394 | return status; |
6395 | } | |
6396 | ||
72de53ec BS |
6397 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6398 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6399 | { |
6400 | struct nfs4_exception exception = { }; | |
6401 | int err; | |
6402 | do { | |
a5250def WAA |
6403 | err = -NFS4ERR_WRONGSEC; |
6404 | ||
6405 | /* try to use integrity protection with machine cred */ | |
6406 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6407 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6408 | ||
6409 | /* | |
6410 | * if unable to use integrity protection, or SECINFO with | |
6411 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6412 | * disallowed by spec, but exists in deployed servers) use | |
6413 | * the current filesystem's rpc_client and the user cred. | |
6414 | */ | |
6415 | if (err == -NFS4ERR_WRONGSEC) | |
6416 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6417 | ||
078ea3df TM |
6418 | trace_nfs4_secinfo(dir, name, err); |
6419 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6420 | &exception); |
6421 | } while (exception.retry); | |
6422 | return err; | |
6423 | } | |
6424 | ||
557134a3 | 6425 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6426 | /* |
6427 | * Check the exchange flags returned by the server for invalid flags, having | |
6428 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6429 | * DS flags set. | |
6430 | */ | |
6431 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6432 | { | |
6433 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6434 | goto out_inval; | |
6435 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6436 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6437 | goto out_inval; | |
6438 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6439 | goto out_inval; | |
6440 | return NFS_OK; | |
6441 | out_inval: | |
6442 | return -NFS4ERR_INVAL; | |
6443 | } | |
6444 | ||
78fe0f41 | 6445 | static bool |
79d4e1f0 CL |
6446 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6447 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6448 | { |
6449 | if (a->server_scope_sz == b->server_scope_sz && | |
6450 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6451 | return true; | |
6452 | ||
6453 | return false; | |
6454 | } | |
6455 | ||
7c44f1ae WAA |
6456 | /* |
6457 | * nfs4_proc_bind_conn_to_session() | |
6458 | * | |
6459 | * The 4.1 client currently uses the same TCP connection for the | |
6460 | * fore and backchannel. | |
6461 | */ | |
2cf047c9 | 6462 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6463 | { |
6464 | int status; | |
6465 | struct nfs41_bind_conn_to_session_res res; | |
6466 | struct rpc_message msg = { | |
6467 | .rpc_proc = | |
6468 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6469 | .rpc_argp = clp, | |
6470 | .rpc_resp = &res, | |
2cf047c9 | 6471 | .rpc_cred = cred, |
7c44f1ae WAA |
6472 | }; |
6473 | ||
6474 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6475 | |
6476 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6477 | if (unlikely(res.session == NULL)) { | |
6478 | status = -ENOMEM; | |
6479 | goto out; | |
6480 | } | |
6481 | ||
6482 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6483 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6484 | if (status == 0) { |
6485 | if (memcmp(res.session->sess_id.data, | |
6486 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6487 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6488 | status = -EIO; | |
6489 | goto out_session; | |
6490 | } | |
6491 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6492 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6493 | __func__); | |
6494 | status = -EIO; | |
6495 | goto out_session; | |
6496 | } | |
6497 | if (res.use_conn_in_rdma_mode) { | |
6498 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6499 | __func__); | |
6500 | status = -EIO; | |
6501 | goto out_session; | |
6502 | } | |
6503 | } | |
6504 | out_session: | |
6505 | kfree(res.session); | |
6506 | out: | |
6507 | dprintk("<-- %s status= %d\n", __func__, status); | |
6508 | return status; | |
6509 | } | |
6510 | ||
99fe60d0 | 6511 | /* |
fa940720 WAA |
6512 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6513 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6514 | */ |
6515 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6516 | .how = SP4_MACH_CRED, | |
6517 | .enforce.u.words = { | |
6518 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6519 | 1 << (OP_EXCHANGE_ID - 32) | | |
6520 | 1 << (OP_CREATE_SESSION - 32) | | |
6521 | 1 << (OP_DESTROY_SESSION - 32) | | |
6522 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6523 | }, |
6524 | .allow.u.words = { | |
6525 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6526 | 1 << (OP_LOCKU) | |
6527 | 1 << (OP_COMMIT), | |
8b5bee2e | 6528 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6529 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6530 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6531 | 1 << (OP_FREE_STATEID - 32) | |
6532 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6533 | } |
6534 | }; | |
6535 | ||
6536 | /* | |
6537 | * Select the state protection mode for client `clp' given the server results | |
6538 | * from exchange_id in `sp'. | |
99fe60d0 | 6539 | * |
2031cd1a WAA |
6540 | * Returns 0 on success, negative errno otherwise. |
6541 | */ | |
6542 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6543 | struct nfs41_state_protection *sp) | |
6544 | { | |
6545 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6546 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6547 | 1 << (OP_EXCHANGE_ID - 32) | | |
6548 | 1 << (OP_CREATE_SESSION - 32) | | |
6549 | 1 << (OP_DESTROY_SESSION - 32) | | |
6550 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6551 | }; | |
6552 | unsigned int i; | |
6553 | ||
6554 | if (sp->how == SP4_MACH_CRED) { | |
6555 | /* Print state protect result */ | |
6556 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6557 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6558 | if (test_bit(i, sp->enforce.u.longs)) | |
6559 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6560 | if (test_bit(i, sp->allow.u.longs)) | |
6561 | dfprintk(MOUNT, " allow op %d\n", i); | |
6562 | } | |
6563 | ||
6564 | /* make sure nothing is on enforce list that isn't supported */ | |
6565 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6566 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6567 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6568 | return -EINVAL; | |
6569 | } | |
6570 | } | |
6571 | ||
6572 | /* | |
6573 | * Minimal mode - state operations are allowed to use machine | |
6574 | * credential. Note this already happens by default, so the | |
6575 | * client doesn't have to do anything more than the negotiation. | |
6576 | * | |
6577 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6578 | * we're already using the machine cred for exchange_id | |
6579 | * and will never use a different cred. | |
6580 | */ | |
6581 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6582 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6583 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6584 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6585 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6586 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6587 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6588 | } else { | |
6589 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6590 | return -EINVAL; | |
6591 | } | |
fa940720 WAA |
6592 | |
6593 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6594 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6595 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6596 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6597 | } | |
8b5bee2e WAA |
6598 | |
6599 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6600 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6601 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6602 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6603 | } | |
3787d506 WAA |
6604 | |
6605 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6606 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6607 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6608 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6609 | } | |
8c21c62c WAA |
6610 | |
6611 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6612 | dfprintk(MOUNT, " write mode enabled\n"); | |
6613 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6614 | } | |
6615 | ||
6616 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6617 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6618 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6619 | } | |
2031cd1a WAA |
6620 | } |
6621 | ||
6622 | return 0; | |
6623 | } | |
6624 | ||
6625 | /* | |
6626 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6627 | * |
2031cd1a | 6628 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6629 | */ |
2031cd1a WAA |
6630 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6631 | u32 sp4_how) | |
99fe60d0 BH |
6632 | { |
6633 | nfs4_verifier verifier; | |
6634 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6635 | .verifier = &verifier, |
99fe60d0 | 6636 | .client = clp, |
cd3fadec | 6637 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6638 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6639 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6640 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6641 | #else | |
6642 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6643 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6644 | #endif | |
99fe60d0 BH |
6645 | }; |
6646 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6647 | 0 |
99fe60d0 BH |
6648 | }; |
6649 | int status; | |
6650 | struct rpc_message msg = { | |
6651 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6652 | .rpc_argp = &args, | |
6653 | .rpc_resp = &res, | |
6654 | .rpc_cred = cred, | |
6655 | }; | |
99fe60d0 | 6656 | |
f092075d | 6657 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6658 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6659 | sizeof(args.id)); | |
6bbb4ae8 CL |
6660 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6661 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6662 | args.id_len, args.id); | |
99fe60d0 | 6663 | |
acdeb69d | 6664 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6665 | GFP_NOFS); |
acdeb69d | 6666 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6667 | status = -ENOMEM; |
6668 | goto out; | |
6669 | } | |
78fe0f41 | 6670 | |
79d4e1f0 | 6671 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6672 | GFP_NOFS); |
177313f1 | 6673 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6674 | status = -ENOMEM; |
acdeb69d | 6675 | goto out_server_owner; |
abe9a6d5 | 6676 | } |
78fe0f41 | 6677 | |
bbafffd2 | 6678 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6679 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6680 | status = -ENOMEM; |
6681 | goto out_server_scope; | |
6682 | } | |
6683 | ||
2031cd1a WAA |
6684 | switch (sp4_how) { |
6685 | case SP4_NONE: | |
6686 | args.state_protect.how = SP4_NONE; | |
6687 | break; | |
6688 | ||
6689 | case SP4_MACH_CRED: | |
6690 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6691 | break; | |
6692 | ||
6693 | default: | |
6694 | /* unsupported! */ | |
6695 | WARN_ON_ONCE(1); | |
6696 | status = -EINVAL; | |
6697 | goto out_server_scope; | |
6698 | } | |
6699 | ||
1bd714f2 | 6700 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6701 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6702 | if (status == 0) |
32b01310 | 6703 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6704 | |
2031cd1a WAA |
6705 | if (status == 0) |
6706 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6707 | ||
acdeb69d | 6708 | if (status == 0) { |
32b01310 TM |
6709 | clp->cl_clientid = res.clientid; |
6710 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6711 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6712 | clp->cl_seqid = res.seqid; | |
6713 | ||
acdeb69d CL |
6714 | kfree(clp->cl_serverowner); |
6715 | clp->cl_serverowner = res.server_owner; | |
6716 | res.server_owner = NULL; | |
78fe0f41 | 6717 | |
7d2ed9ac | 6718 | /* use the most recent implementation id */ |
59155546 CL |
6719 | kfree(clp->cl_implid); |
6720 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6721 | |
177313f1 | 6722 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6723 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6724 | res.server_scope)) { |
6725 | dprintk("%s: server_scope mismatch detected\n", | |
6726 | __func__); | |
6727 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6728 | kfree(clp->cl_serverscope); |
6729 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6730 | } |
6731 | ||
177313f1 | 6732 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6733 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6734 | goto out; |
6735 | } | |
32b01310 TM |
6736 | } else |
6737 | kfree(res.impl_id); | |
7d2ed9ac | 6738 | |
acdeb69d CL |
6739 | out_server_owner: |
6740 | kfree(res.server_owner); | |
7d2ed9ac | 6741 | out_server_scope: |
abe9a6d5 WAA |
6742 | kfree(res.server_scope); |
6743 | out: | |
177313f1 | 6744 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6745 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6746 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6747 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6748 | clp->cl_implid->date.seconds, |
6749 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6750 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6751 | return status; |
6752 | } | |
6753 | ||
2031cd1a WAA |
6754 | /* |
6755 | * nfs4_proc_exchange_id() | |
6756 | * | |
6757 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6758 | * | |
6759 | * Since the clientid has expired, all compounds using sessions | |
6760 | * associated with the stale clientid will be returning | |
6761 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6762 | * be in some phase of session reset. | |
6763 | * | |
6764 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
6765 | */ | |
6766 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
6767 | { | |
6768 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
6769 | int status; | |
6770 | ||
6771 | /* try SP4_MACH_CRED if krb5i/p */ | |
6772 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
6773 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
6774 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
6775 | if (!status) | |
6776 | return 0; | |
6777 | } | |
6778 | ||
6779 | /* try SP4_NONE */ | |
6780 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
6781 | } | |
6782 | ||
66245539 TM |
6783 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6784 | struct rpc_cred *cred) | |
6785 | { | |
6786 | struct rpc_message msg = { | |
6787 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6788 | .rpc_argp = clp, | |
6789 | .rpc_cred = cred, | |
6790 | }; | |
6791 | int status; | |
6792 | ||
6793 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6794 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6795 | if (status) |
02c67525 | 6796 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6797 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6798 | return status; | |
6799 | } | |
6800 | ||
6801 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6802 | struct rpc_cred *cred) | |
6803 | { | |
6804 | unsigned int loop; | |
6805 | int ret; | |
6806 | ||
6807 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6808 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6809 | switch (ret) { | |
6810 | case -NFS4ERR_DELAY: | |
6811 | case -NFS4ERR_CLIENTID_BUSY: | |
6812 | ssleep(1); | |
6813 | break; | |
6814 | default: | |
6815 | return ret; | |
6816 | } | |
6817 | } | |
6818 | return 0; | |
6819 | } | |
6820 | ||
6821 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6822 | { | |
6823 | struct rpc_cred *cred; | |
6824 | int ret = 0; | |
6825 | ||
6826 | if (clp->cl_mvops->minor_version < 1) | |
6827 | goto out; | |
6828 | if (clp->cl_exchange_flags == 0) | |
6829 | goto out; | |
05f4c350 CL |
6830 | if (clp->cl_preserve_clid) |
6831 | goto out; | |
73d8bde5 | 6832 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6833 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6834 | if (cred) | |
6835 | put_rpccred(cred); | |
6836 | switch (ret) { | |
6837 | case 0: | |
6838 | case -NFS4ERR_STALE_CLIENTID: | |
6839 | clp->cl_exchange_flags = 0; | |
6840 | } | |
6841 | out: | |
6842 | return ret; | |
6843 | } | |
6844 | ||
2050f0cc AA |
6845 | struct nfs4_get_lease_time_data { |
6846 | struct nfs4_get_lease_time_args *args; | |
6847 | struct nfs4_get_lease_time_res *res; | |
6848 | struct nfs_client *clp; | |
6849 | }; | |
6850 | ||
6851 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6852 | void *calldata) | |
6853 | { | |
2050f0cc AA |
6854 | struct nfs4_get_lease_time_data *data = |
6855 | (struct nfs4_get_lease_time_data *)calldata; | |
6856 | ||
6857 | dprintk("--> %s\n", __func__); | |
6858 | /* just setup sequence, do not trigger session recovery | |
6859 | since we're invoked within one */ | |
d9afbd1b TM |
6860 | nfs41_setup_sequence(data->clp->cl_session, |
6861 | &data->args->la_seq_args, | |
6862 | &data->res->lr_seq_res, | |
6863 | task); | |
2050f0cc AA |
6864 | dprintk("<-- %s\n", __func__); |
6865 | } | |
6866 | ||
6867 | /* | |
6868 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6869 | * from sequence operation or clientid errors. | |
6870 | */ | |
6871 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6872 | { | |
6873 | struct nfs4_get_lease_time_data *data = | |
6874 | (struct nfs4_get_lease_time_data *)calldata; | |
6875 | ||
6876 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6877 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6878 | return; | |
2050f0cc AA |
6879 | switch (task->tk_status) { |
6880 | case -NFS4ERR_DELAY: | |
6881 | case -NFS4ERR_GRACE: | |
6882 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6883 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6884 | task->tk_status = 0; | |
a8a4ae3a AA |
6885 | /* fall through */ |
6886 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6887 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6888 | return; |
6889 | } | |
2050f0cc AA |
6890 | dprintk("<-- %s\n", __func__); |
6891 | } | |
6892 | ||
17280175 | 6893 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6894 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6895 | .rpc_call_done = nfs4_get_lease_time_done, | |
6896 | }; | |
6897 | ||
6898 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6899 | { | |
6900 | struct rpc_task *task; | |
6901 | struct nfs4_get_lease_time_args args; | |
6902 | struct nfs4_get_lease_time_res res = { | |
6903 | .lr_fsinfo = fsinfo, | |
6904 | }; | |
6905 | struct nfs4_get_lease_time_data data = { | |
6906 | .args = &args, | |
6907 | .res = &res, | |
6908 | .clp = clp, | |
6909 | }; | |
6910 | struct rpc_message msg = { | |
6911 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6912 | .rpc_argp = &args, | |
6913 | .rpc_resp = &res, | |
6914 | }; | |
6915 | struct rpc_task_setup task_setup = { | |
6916 | .rpc_client = clp->cl_rpcclient, | |
6917 | .rpc_message = &msg, | |
6918 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6919 | .callback_data = &data, |
6920 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6921 | }; |
6922 | int status; | |
6923 | ||
a9c92d6b | 6924 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6925 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6926 | dprintk("--> %s\n", __func__); |
6927 | task = rpc_run_task(&task_setup); | |
6928 | ||
6929 | if (IS_ERR(task)) | |
6930 | status = PTR_ERR(task); | |
6931 | else { | |
6932 | status = task->tk_status; | |
6933 | rpc_put_task(task); | |
6934 | } | |
6935 | dprintk("<-- %s return %d\n", __func__, status); | |
6936 | ||
6937 | return status; | |
6938 | } | |
6939 | ||
fc931582 AA |
6940 | /* |
6941 | * Initialize the values to be used by the client in CREATE_SESSION | |
6942 | * If nfs4_init_session set the fore channel request and response sizes, | |
6943 | * use them. | |
6944 | * | |
6945 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6946 | * always set csa_cachethis to FALSE because the current implementation | |
6947 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6948 | */ | |
6949 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6950 | { | |
18aad3d5 AA |
6951 | unsigned int max_rqst_sz, max_resp_sz; |
6952 | ||
6953 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6954 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6955 | |
fc931582 | 6956 | /* Fore channel attributes */ |
18aad3d5 AA |
6957 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6958 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6959 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6960 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6961 | |
6962 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6963 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6964 | __func__, |
6965 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6966 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6967 | |
6968 | /* Back channel attributes */ | |
fc931582 AA |
6969 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6970 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6971 | args->bc_attrs.max_resp_sz_cached = 0; | |
6972 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6973 | args->bc_attrs.max_reqs = 1; | |
6974 | ||
6975 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6976 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6977 | __func__, | |
6978 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6979 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6980 | args->bc_attrs.max_reqs); | |
6981 | } | |
6982 | ||
43c2e885 | 6983 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6984 | { |
43c2e885 BF |
6985 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6986 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6987 | ||
43c2e885 BF |
6988 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6989 | return -EINVAL; | |
6990 | /* | |
6991 | * Our requested max_ops is the minimum we need; we're not | |
6992 | * prepared to break up compounds into smaller pieces than that. | |
6993 | * So, no point even trying to continue if the server won't | |
6994 | * cooperate: | |
6995 | */ | |
6996 | if (rcvd->max_ops < sent->max_ops) | |
6997 | return -EINVAL; | |
6998 | if (rcvd->max_reqs == 0) | |
6999 | return -EINVAL; | |
b4b9a0c1 VG |
7000 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7001 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7002 | return 0; |
8d35301d AA |
7003 | } |
7004 | ||
43c2e885 BF |
7005 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
7006 | { | |
7007 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
7008 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 7009 | |
43c2e885 BF |
7010 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7011 | return -EINVAL; | |
7012 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7013 | return -EINVAL; | |
7014 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7015 | return -EINVAL; | |
7016 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7017 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7018 | return -EINVAL; |
b4b9a0c1 | 7019 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
7020 | return -EINVAL; |
7021 | return 0; | |
7022 | } | |
8d35301d | 7023 | |
8d35301d AA |
7024 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
7025 | struct nfs4_session *session) | |
7026 | { | |
43c2e885 | 7027 | int ret; |
8d35301d | 7028 | |
43c2e885 BF |
7029 | ret = nfs4_verify_fore_channel_attrs(args, session); |
7030 | if (ret) | |
7031 | return ret; | |
7032 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
7033 | } |
7034 | ||
848f5bda TM |
7035 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7036 | struct rpc_cred *cred) | |
fc931582 AA |
7037 | { |
7038 | struct nfs4_session *session = clp->cl_session; | |
7039 | struct nfs41_create_session_args args = { | |
7040 | .client = clp, | |
7041 | .cb_program = NFS4_CALLBACK, | |
7042 | }; | |
7043 | struct nfs41_create_session_res res = { | |
7044 | .client = clp, | |
7045 | }; | |
7046 | struct rpc_message msg = { | |
7047 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7048 | .rpc_argp = &args, | |
7049 | .rpc_resp = &res, | |
848f5bda | 7050 | .rpc_cred = cred, |
fc931582 AA |
7051 | }; |
7052 | int status; | |
7053 | ||
7054 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7055 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7056 | |
1bd714f2 | 7057 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7058 | trace_nfs4_create_session(clp, status); |
fc931582 | 7059 | |
43095d39 | 7060 | if (!status) { |
8d35301d AA |
7061 | /* Verify the session's negotiated channel_attrs values */ |
7062 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
7063 | /* Increment the clientid slot sequence id */ |
7064 | clp->cl_seqid++; | |
7065 | } | |
7066 | ||
7067 | return status; | |
7068 | } | |
7069 | ||
7070 | /* | |
7071 | * Issues a CREATE_SESSION operation to the server. | |
7072 | * It is the responsibility of the caller to verify the session is | |
7073 | * expired before calling this routine. | |
7074 | */ | |
848f5bda | 7075 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7076 | { |
7077 | int status; | |
7078 | unsigned *ptr; | |
fc931582 AA |
7079 | struct nfs4_session *session = clp->cl_session; |
7080 | ||
7081 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7082 | ||
848f5bda | 7083 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7084 | if (status) |
7085 | goto out; | |
7086 | ||
aacd5537 AA |
7087 | /* Init or reset the session slot tables */ |
7088 | status = nfs4_setup_session_slot_tables(session); | |
7089 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7090 | if (status) |
7091 | goto out; | |
7092 | ||
7093 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7094 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7095 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7096 | out: |
7097 | dprintk("<-- %s\n", __func__); | |
7098 | return status; | |
7099 | } | |
7100 | ||
0f3e66c6 AA |
7101 | /* |
7102 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7103 | * The caller must serialize access to this routine. | |
7104 | */ | |
848f5bda TM |
7105 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7106 | struct rpc_cred *cred) | |
0f3e66c6 | 7107 | { |
848f5bda TM |
7108 | struct rpc_message msg = { |
7109 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7110 | .rpc_argp = session, | |
7111 | .rpc_cred = cred, | |
7112 | }; | |
0f3e66c6 | 7113 | int status = 0; |
0f3e66c6 AA |
7114 | |
7115 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7116 | ||
7117 | /* session is still being setup */ | |
7118 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
7119 | return status; | |
7120 | ||
1bd714f2 | 7121 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7122 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7123 | |
7124 | if (status) | |
08106ac7 | 7125 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7126 | "Session has been destroyed regardless...\n", status); |
7127 | ||
7128 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7129 | return status; | |
7130 | } | |
7131 | ||
fc01cea9 AA |
7132 | /* |
7133 | * Renew the cl_session lease. | |
7134 | */ | |
d5f8d3fe TM |
7135 | struct nfs4_sequence_data { |
7136 | struct nfs_client *clp; | |
7137 | struct nfs4_sequence_args args; | |
7138 | struct nfs4_sequence_res res; | |
7139 | }; | |
7140 | ||
dc96aef9 AB |
7141 | static void nfs41_sequence_release(void *data) |
7142 | { | |
d5f8d3fe TM |
7143 | struct nfs4_sequence_data *calldata = data; |
7144 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7145 | |
7135840f AB |
7146 | if (atomic_read(&clp->cl_count) > 1) |
7147 | nfs4_schedule_state_renewal(clp); | |
7148 | nfs_put_client(clp); | |
d5f8d3fe | 7149 | kfree(calldata); |
dc96aef9 AB |
7150 | } |
7151 | ||
aa5190d0 TM |
7152 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7153 | { | |
7154 | switch(task->tk_status) { | |
7155 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7156 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7157 | return -EAGAIN; | |
7158 | default: | |
0400a6b0 | 7159 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7160 | } |
7161 | return 0; | |
7162 | } | |
7163 | ||
dc96aef9 | 7164 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7165 | { |
d5f8d3fe TM |
7166 | struct nfs4_sequence_data *calldata = data; |
7167 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7168 | |
14516c3a TM |
7169 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7170 | return; | |
fc01cea9 | 7171 | |
c6d01c6f | 7172 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7173 | if (task->tk_status < 0) { |
7174 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7175 | if (atomic_read(&clp->cl_count) == 1) |
7176 | goto out; | |
fc01cea9 | 7177 | |
aa5190d0 TM |
7178 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7179 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7180 | return; |
7181 | } | |
7182 | } | |
fc01cea9 | 7183 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7184 | out: |
fc01cea9 AA |
7185 | dprintk("<-- %s\n", __func__); |
7186 | } | |
7187 | ||
7188 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7189 | { | |
d5f8d3fe TM |
7190 | struct nfs4_sequence_data *calldata = data; |
7191 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7192 | struct nfs4_sequence_args *args; |
7193 | struct nfs4_sequence_res *res; | |
7194 | ||
fc01cea9 AA |
7195 | args = task->tk_msg.rpc_argp; |
7196 | res = task->tk_msg.rpc_resp; | |
7197 | ||
d9afbd1b | 7198 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7199 | } |
7200 | ||
7201 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7202 | .rpc_call_done = nfs41_sequence_call_done, | |
7203 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7204 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7205 | }; |
7206 | ||
8fe72bac TM |
7207 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7208 | struct rpc_cred *cred, | |
7209 | bool is_privileged) | |
fc01cea9 | 7210 | { |
d5f8d3fe | 7211 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7212 | struct rpc_message msg = { |
7213 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7214 | .rpc_cred = cred, | |
7215 | }; | |
71ac6da9 TM |
7216 | struct rpc_task_setup task_setup_data = { |
7217 | .rpc_client = clp->cl_rpcclient, | |
7218 | .rpc_message = &msg, | |
8fe72bac | 7219 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7220 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7221 | }; |
fc01cea9 | 7222 | |
7135840f | 7223 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7224 | return ERR_PTR(-EIO); |
dfb4f309 | 7225 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7226 | if (calldata == NULL) { |
7135840f | 7227 | nfs_put_client(clp); |
71ac6da9 | 7228 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7229 | } |
a9c92d6b | 7230 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7231 | if (is_privileged) |
7232 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7233 | msg.rpc_argp = &calldata->args; |
7234 | msg.rpc_resp = &calldata->res; | |
7235 | calldata->clp = clp; | |
71ac6da9 | 7236 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7237 | |
71ac6da9 TM |
7238 | return rpc_run_task(&task_setup_data); |
7239 | } | |
7240 | ||
2f60ea6b | 7241 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7242 | { |
7243 | struct rpc_task *task; | |
7244 | int ret = 0; | |
7245 | ||
2f60ea6b TM |
7246 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
7247 | return 0; | |
8fe72bac | 7248 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7249 | if (IS_ERR(task)) |
7250 | ret = PTR_ERR(task); | |
7251 | else | |
bf294b41 | 7252 | rpc_put_task_async(task); |
71ac6da9 TM |
7253 | dprintk("<-- %s status=%d\n", __func__, ret); |
7254 | return ret; | |
7255 | } | |
7256 | ||
7257 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7258 | { | |
7259 | struct rpc_task *task; | |
7260 | int ret; | |
7261 | ||
8fe72bac | 7262 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7263 | if (IS_ERR(task)) { |
7264 | ret = PTR_ERR(task); | |
7265 | goto out; | |
7266 | } | |
7267 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
7268 | if (!ret) { |
7269 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
7270 | ||
7271 | if (task->tk_status == 0) | |
7272 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 7273 | ret = task->tk_status; |
b4410c2f | 7274 | } |
71ac6da9 TM |
7275 | rpc_put_task(task); |
7276 | out: | |
7277 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7278 | return ret; | |
fc01cea9 AA |
7279 | } |
7280 | ||
fce5c838 RL |
7281 | struct nfs4_reclaim_complete_data { |
7282 | struct nfs_client *clp; | |
7283 | struct nfs41_reclaim_complete_args arg; | |
7284 | struct nfs41_reclaim_complete_res res; | |
7285 | }; | |
7286 | ||
7287 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7288 | { | |
7289 | struct nfs4_reclaim_complete_data *calldata = data; | |
7290 | ||
d9afbd1b TM |
7291 | nfs41_setup_sequence(calldata->clp->cl_session, |
7292 | &calldata->arg.seq_args, | |
7293 | &calldata->res.seq_res, | |
7294 | task); | |
fce5c838 RL |
7295 | } |
7296 | ||
aa5190d0 TM |
7297 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7298 | { | |
7299 | switch(task->tk_status) { | |
7300 | case 0: | |
7301 | case -NFS4ERR_COMPLETE_ALREADY: | |
7302 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7303 | break; | |
7304 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7305 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7306 | /* fall through */ |
7307 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7308 | return -EAGAIN; |
7309 | default: | |
0400a6b0 | 7310 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7311 | } |
7312 | return 0; | |
7313 | } | |
7314 | ||
fce5c838 RL |
7315 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7316 | { | |
7317 | struct nfs4_reclaim_complete_data *calldata = data; | |
7318 | struct nfs_client *clp = calldata->clp; | |
7319 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7320 | ||
7321 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7322 | if (!nfs41_sequence_done(task, res)) |
7323 | return; | |
fce5c838 | 7324 | |
c6d01c6f | 7325 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7326 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7327 | rpc_restart_call_prepare(task); | |
7328 | return; | |
7329 | } | |
fce5c838 RL |
7330 | dprintk("<-- %s\n", __func__); |
7331 | } | |
7332 | ||
7333 | static void nfs4_free_reclaim_complete_data(void *data) | |
7334 | { | |
7335 | struct nfs4_reclaim_complete_data *calldata = data; | |
7336 | ||
7337 | kfree(calldata); | |
7338 | } | |
7339 | ||
7340 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7341 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7342 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7343 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7344 | }; | |
7345 | ||
7346 | /* | |
7347 | * Issue a global reclaim complete. | |
7348 | */ | |
965e9c23 TM |
7349 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7350 | struct rpc_cred *cred) | |
fce5c838 RL |
7351 | { |
7352 | struct nfs4_reclaim_complete_data *calldata; | |
7353 | struct rpc_task *task; | |
7354 | struct rpc_message msg = { | |
7355 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7356 | .rpc_cred = cred, |
fce5c838 RL |
7357 | }; |
7358 | struct rpc_task_setup task_setup_data = { | |
7359 | .rpc_client = clp->cl_rpcclient, | |
7360 | .rpc_message = &msg, | |
7361 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7362 | .flags = RPC_TASK_ASYNC, | |
7363 | }; | |
7364 | int status = -ENOMEM; | |
7365 | ||
7366 | dprintk("--> %s\n", __func__); | |
8535b2be | 7367 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7368 | if (calldata == NULL) |
7369 | goto out; | |
7370 | calldata->clp = clp; | |
7371 | calldata->arg.one_fs = 0; | |
fce5c838 | 7372 | |
a9c92d6b | 7373 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7374 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7375 | msg.rpc_argp = &calldata->arg; |
7376 | msg.rpc_resp = &calldata->res; | |
7377 | task_setup_data.callback_data = calldata; | |
7378 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7379 | if (IS_ERR(task)) { |
fce5c838 | 7380 | status = PTR_ERR(task); |
acf82b85 DC |
7381 | goto out; |
7382 | } | |
c34c32ea AA |
7383 | status = nfs4_wait_for_completion_rpc_task(task); |
7384 | if (status == 0) | |
7385 | status = task->tk_status; | |
fce5c838 | 7386 | rpc_put_task(task); |
acf82b85 | 7387 | return 0; |
fce5c838 RL |
7388 | out: |
7389 | dprintk("<-- %s status=%d\n", __func__, status); | |
7390 | return status; | |
7391 | } | |
b1f69b75 AA |
7392 | |
7393 | static void | |
7394 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7395 | { | |
7396 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7397 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7398 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7399 | |
7400 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7401 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7402 | * right now covering the LAYOUTGET we are about to send. | |
7403 | * However, that is not so catastrophic, and there seems | |
7404 | * to be no way to prevent it completely. | |
7405 | */ | |
6ba7db34 | 7406 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7407 | &lgp->res.seq_res, task)) |
b1f69b75 | 7408 | return; |
cf7d63f1 FI |
7409 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7410 | NFS_I(lgp->args.inode)->layout, | |
7411 | lgp->args.ctx->state)) { | |
7412 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7413 | } |
b1f69b75 AA |
7414 | } |
7415 | ||
7416 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7417 | { | |
7418 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7419 | struct inode *inode = lgp->args.inode; |
7420 | struct nfs_server *server = NFS_SERVER(inode); | |
7421 | struct pnfs_layout_hdr *lo; | |
7422 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7423 | unsigned long timeo, now, giveup; |
b1f69b75 | 7424 | |
ed7e5423 | 7425 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7426 | |
6ba7db34 | 7427 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7428 | goto out; |
b1f69b75 AA |
7429 | |
7430 | switch (task->tk_status) { | |
7431 | case 0: | |
ee314c2a | 7432 | goto out; |
ed7e5423 BH |
7433 | /* |
7434 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
7435 | * (or clients) writing to the same RAID stripe | |
7436 | */ | |
b1f69b75 | 7437 | case -NFS4ERR_LAYOUTTRYLATER: |
ed7e5423 BH |
7438 | /* |
7439 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7440 | * existing layout before getting a new one). | |
7441 | */ | |
b1f69b75 | 7442 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7443 | timeo = rpc_get_timeout(task->tk_client); |
7444 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7445 | now = jiffies; |
7446 | if (time_after(giveup, now)) { | |
7447 | unsigned long delay; | |
7448 | ||
7449 | /* Delay for: | |
7450 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7451 | * - One last time a jiffie before we give up | |
7452 | * - exponential backoff (time_now minus start_attempt) | |
7453 | */ | |
7454 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7455 | min((giveup - now - 1), | |
7456 | now - lgp->args.timestamp)); | |
7457 | ||
7458 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7459 | __func__, delay); | |
7460 | rpc_delay(task, delay); | |
7461 | task->tk_status = 0; | |
7462 | rpc_restart_call_prepare(task); | |
7463 | goto out; /* Do not call nfs4_async_handle_error() */ | |
7464 | } | |
ee314c2a TM |
7465 | break; |
7466 | case -NFS4ERR_EXPIRED: | |
7467 | case -NFS4ERR_BAD_STATEID: | |
7468 | spin_lock(&inode->i_lock); | |
7469 | lo = NFS_I(inode)->layout; | |
7470 | if (!lo || list_empty(&lo->plh_segs)) { | |
7471 | spin_unlock(&inode->i_lock); | |
7472 | /* If the open stateid was bad, then recover it. */ | |
7473 | state = lgp->args.ctx->state; | |
7474 | } else { | |
7475 | LIST_HEAD(head); | |
7476 | ||
7477 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
7478 | spin_unlock(&inode->i_lock); | |
7479 | /* Mark the bad layout state as invalid, then | |
7480 | * retry using the open stateid. */ | |
7481 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
7482 | } |
7483 | } | |
ee314c2a TM |
7484 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
7485 | rpc_restart_call_prepare(task); | |
7486 | out: | |
b1f69b75 AA |
7487 | dprintk("<-- %s\n", __func__); |
7488 | } | |
7489 | ||
8554116e IK |
7490 | static size_t max_response_pages(struct nfs_server *server) |
7491 | { | |
7492 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7493 | return nfs_page_array_len(0, max_resp_sz); | |
7494 | } | |
7495 | ||
7496 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7497 | { | |
7498 | int i; | |
7499 | ||
7500 | if (!pages) | |
7501 | return; | |
7502 | ||
7503 | for (i = 0; i < size; i++) { | |
7504 | if (!pages[i]) | |
7505 | break; | |
7506 | __free_page(pages[i]); | |
7507 | } | |
7508 | kfree(pages); | |
7509 | } | |
7510 | ||
7511 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7512 | { | |
7513 | struct page **pages; | |
7514 | int i; | |
7515 | ||
7516 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7517 | if (!pages) { | |
7518 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7519 | return NULL; | |
7520 | } | |
7521 | ||
7522 | for (i = 0; i < size; i++) { | |
7523 | pages[i] = alloc_page(gfp_flags); | |
7524 | if (!pages[i]) { | |
7525 | dprintk("%s: failed to allocate page\n", __func__); | |
7526 | nfs4_free_pages(pages, size); | |
7527 | return NULL; | |
7528 | } | |
7529 | } | |
7530 | ||
7531 | return pages; | |
7532 | } | |
7533 | ||
b1f69b75 AA |
7534 | static void nfs4_layoutget_release(void *calldata) |
7535 | { | |
7536 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7537 | struct inode *inode = lgp->args.inode; |
7538 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7539 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7540 | |
7541 | dprintk("--> %s\n", __func__); | |
8554116e | 7542 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7543 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7544 | put_nfs_open_context(lgp->args.ctx); |
7545 | kfree(calldata); | |
7546 | dprintk("<-- %s\n", __func__); | |
7547 | } | |
7548 | ||
7549 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7550 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7551 | .rpc_call_done = nfs4_layoutget_done, | |
7552 | .rpc_release = nfs4_layoutget_release, | |
7553 | }; | |
7554 | ||
a0b0a6e3 TM |
7555 | struct pnfs_layout_segment * |
7556 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7557 | { |
a47970ff WAA |
7558 | struct inode *inode = lgp->args.inode; |
7559 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7560 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7561 | struct rpc_task *task; |
7562 | struct rpc_message msg = { | |
7563 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7564 | .rpc_argp = &lgp->args, | |
7565 | .rpc_resp = &lgp->res, | |
6ab59344 | 7566 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7567 | }; |
7568 | struct rpc_task_setup task_setup_data = { | |
7569 | .rpc_client = server->client, | |
7570 | .rpc_message = &msg, | |
7571 | .callback_ops = &nfs4_layoutget_call_ops, | |
7572 | .callback_data = lgp, | |
7573 | .flags = RPC_TASK_ASYNC, | |
7574 | }; | |
a0b0a6e3 | 7575 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7576 | int status = 0; |
7577 | ||
7578 | dprintk("--> %s\n", __func__); | |
7579 | ||
8554116e IK |
7580 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7581 | if (!lgp->args.layout.pages) { | |
7582 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7583 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7584 | } |
7585 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7586 | lgp->args.timestamp = jiffies; |
8554116e | 7587 | |
35124a09 | 7588 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7589 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7590 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
7591 | |
7592 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
7593 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7594 | ||
b1f69b75 AA |
7595 | task = rpc_run_task(&task_setup_data); |
7596 | if (IS_ERR(task)) | |
a0b0a6e3 | 7597 | return ERR_CAST(task); |
b1f69b75 | 7598 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7599 | if (status == 0) |
7600 | status = task->tk_status; | |
1037e6ea TM |
7601 | trace_nfs4_layoutget(lgp->args.ctx, |
7602 | &lgp->args.range, | |
7603 | &lgp->res.range, | |
7604 | status); | |
085b7a45 WAA |
7605 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7606 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7607 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7608 | rpc_put_task(task); |
7609 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7610 | if (status) |
7611 | return ERR_PTR(status); | |
7612 | return lseg; | |
b1f69b75 AA |
7613 | } |
7614 | ||
cbe82603 BH |
7615 | static void |
7616 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7617 | { | |
7618 | struct nfs4_layoutreturn *lrp = calldata; | |
7619 | ||
7620 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7621 | nfs41_setup_sequence(lrp->clp->cl_session, |
7622 | &lrp->args.seq_args, | |
7623 | &lrp->res.seq_res, | |
7624 | task); | |
cbe82603 BH |
7625 | } |
7626 | ||
7627 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7628 | { | |
7629 | struct nfs4_layoutreturn *lrp = calldata; | |
7630 | struct nfs_server *server; | |
7631 | ||
7632 | dprintk("--> %s\n", __func__); | |
7633 | ||
6ba7db34 | 7634 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7635 | return; |
7636 | ||
7637 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
7638 | switch (task->tk_status) { |
7639 | default: | |
7640 | task->tk_status = 0; | |
7641 | case 0: | |
7642 | break; | |
7643 | case -NFS4ERR_DELAY: | |
7644 | if (nfs4_async_handle_error(task, server, NULL) != -EAGAIN) | |
7645 | break; | |
d00c5d43 | 7646 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7647 | return; |
7648 | } | |
cbe82603 BH |
7649 | dprintk("<-- %s\n", __func__); |
7650 | } | |
7651 | ||
7652 | static void nfs4_layoutreturn_release(void *calldata) | |
7653 | { | |
7654 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7655 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7656 | |
7657 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7658 | spin_lock(&lo->plh_inode->i_lock); |
7659 | if (lrp->res.lrs_present) | |
7660 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7661 | lo->plh_block_lgets--; | |
7662 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7663 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7664 | kfree(calldata); |
7665 | dprintk("<-- %s\n", __func__); | |
7666 | } | |
7667 | ||
7668 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7669 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7670 | .rpc_call_done = nfs4_layoutreturn_done, | |
7671 | .rpc_release = nfs4_layoutreturn_release, | |
7672 | }; | |
7673 | ||
7674 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7675 | { | |
7676 | struct rpc_task *task; | |
7677 | struct rpc_message msg = { | |
7678 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7679 | .rpc_argp = &lrp->args, | |
7680 | .rpc_resp = &lrp->res, | |
9556000d | 7681 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7682 | }; |
7683 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7684 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7685 | .rpc_message = &msg, |
7686 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7687 | .callback_data = lrp, | |
7688 | }; | |
7689 | int status; | |
7690 | ||
7691 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7692 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7693 | task = rpc_run_task(&task_setup_data); |
7694 | if (IS_ERR(task)) | |
7695 | return PTR_ERR(task); | |
7696 | status = task->tk_status; | |
1037e6ea | 7697 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7698 | dprintk("<-- %s status=%d\n", __func__, status); |
7699 | rpc_put_task(task); | |
7700 | return status; | |
7701 | } | |
7702 | ||
7f11d8d3 AA |
7703 | /* |
7704 | * Retrieve the list of Data Server devices from the MDS. | |
7705 | */ | |
7706 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
7707 | const struct nfs_fh *fh, | |
7708 | struct pnfs_devicelist *devlist) | |
7709 | { | |
7710 | struct nfs4_getdevicelist_args args = { | |
7711 | .fh = fh, | |
7712 | .layoutclass = server->pnfs_curr_ld->id, | |
7713 | }; | |
7714 | struct nfs4_getdevicelist_res res = { | |
7715 | .devlist = devlist, | |
7716 | }; | |
7717 | struct rpc_message msg = { | |
7718 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
7719 | .rpc_argp = &args, | |
7720 | .rpc_resp = &res, | |
7721 | }; | |
7722 | int status; | |
7723 | ||
7724 | dprintk("--> %s\n", __func__); | |
7725 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
7726 | &res.seq_res, 0); | |
7727 | dprintk("<-- %s status=%d\n", __func__, status); | |
7728 | return status; | |
7729 | } | |
7730 | ||
7731 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
7732 | const struct nfs_fh *fh, | |
7733 | struct pnfs_devicelist *devlist) | |
7734 | { | |
7735 | struct nfs4_exception exception = { }; | |
7736 | int err; | |
7737 | ||
7738 | do { | |
7739 | err = nfs4_handle_exception(server, | |
7740 | _nfs4_getdevicelist(server, fh, devlist), | |
7741 | &exception); | |
7742 | } while (exception.retry); | |
7743 | ||
7744 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
7745 | err, devlist->num_devs); | |
7746 | ||
7747 | return err; | |
7748 | } | |
7749 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
7750 | ||
b1f69b75 | 7751 | static int |
cd5875fe TM |
7752 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7753 | struct pnfs_device *pdev, | |
7754 | struct rpc_cred *cred) | |
b1f69b75 AA |
7755 | { |
7756 | struct nfs4_getdeviceinfo_args args = { | |
7757 | .pdev = pdev, | |
7758 | }; | |
7759 | struct nfs4_getdeviceinfo_res res = { | |
7760 | .pdev = pdev, | |
7761 | }; | |
7762 | struct rpc_message msg = { | |
7763 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7764 | .rpc_argp = &args, | |
7765 | .rpc_resp = &res, | |
cd5875fe | 7766 | .rpc_cred = cred, |
b1f69b75 AA |
7767 | }; |
7768 | int status; | |
7769 | ||
7770 | dprintk("--> %s\n", __func__); | |
7c513058 | 7771 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7772 | dprintk("<-- %s status=%d\n", __func__, status); |
7773 | ||
7774 | return status; | |
7775 | } | |
7776 | ||
cd5875fe TM |
7777 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7778 | struct pnfs_device *pdev, | |
7779 | struct rpc_cred *cred) | |
b1f69b75 AA |
7780 | { |
7781 | struct nfs4_exception exception = { }; | |
7782 | int err; | |
7783 | ||
7784 | do { | |
7785 | err = nfs4_handle_exception(server, | |
cd5875fe | 7786 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7787 | &exception); |
7788 | } while (exception.retry); | |
7789 | return err; | |
7790 | } | |
7791 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7792 | ||
863a3c6c AA |
7793 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7794 | { | |
7795 | struct nfs4_layoutcommit_data *data = calldata; | |
7796 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7797 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7798 | |
d9afbd1b TM |
7799 | nfs41_setup_sequence(session, |
7800 | &data->args.seq_args, | |
7801 | &data->res.seq_res, | |
7802 | task); | |
863a3c6c AA |
7803 | } |
7804 | ||
7805 | static void | |
7806 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7807 | { | |
7808 | struct nfs4_layoutcommit_data *data = calldata; | |
7809 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7810 | ||
6ba7db34 | 7811 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7812 | return; |
7813 | ||
7814 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7815 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7816 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7817 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7818 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7819 | task->tk_status = 0; |
e59d27e0 | 7820 | case 0: |
e59d27e0 TM |
7821 | break; |
7822 | default: | |
7823 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7824 | rpc_restart_call_prepare(task); | |
7825 | return; | |
7826 | } | |
7827 | } | |
863a3c6c AA |
7828 | } |
7829 | ||
7830 | static void nfs4_layoutcommit_release(void *calldata) | |
7831 | { | |
7832 | struct nfs4_layoutcommit_data *data = calldata; | |
7833 | ||
db29c089 | 7834 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
7835 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7836 | data->res.fattr); | |
863a3c6c AA |
7837 | put_rpccred(data->cred); |
7838 | kfree(data); | |
7839 | } | |
7840 | ||
7841 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7842 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7843 | .rpc_call_done = nfs4_layoutcommit_done, | |
7844 | .rpc_release = nfs4_layoutcommit_release, | |
7845 | }; | |
7846 | ||
7847 | int | |
ef311537 | 7848 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7849 | { |
7850 | struct rpc_message msg = { | |
7851 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7852 | .rpc_argp = &data->args, | |
7853 | .rpc_resp = &data->res, | |
7854 | .rpc_cred = data->cred, | |
7855 | }; | |
7856 | struct rpc_task_setup task_setup_data = { | |
7857 | .task = &data->task, | |
7858 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7859 | .rpc_message = &msg, | |
7860 | .callback_ops = &nfs4_layoutcommit_ops, | |
7861 | .callback_data = data, | |
7862 | .flags = RPC_TASK_ASYNC, | |
7863 | }; | |
7864 | struct rpc_task *task; | |
7865 | int status = 0; | |
7866 | ||
7867 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7868 | "lbw: %llu inode %lu\n", | |
7869 | data->task.tk_pid, sync, | |
7870 | data->args.lastbytewritten, | |
7871 | data->args.inode->i_ino); | |
7872 | ||
a9c92d6b | 7873 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7874 | task = rpc_run_task(&task_setup_data); |
7875 | if (IS_ERR(task)) | |
7876 | return PTR_ERR(task); | |
ef311537 | 7877 | if (sync == false) |
863a3c6c AA |
7878 | goto out; |
7879 | status = nfs4_wait_for_completion_rpc_task(task); | |
7880 | if (status != 0) | |
7881 | goto out; | |
7882 | status = task->tk_status; | |
1037e6ea | 7883 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7884 | out: |
7885 | dprintk("%s: status %d\n", __func__, status); | |
7886 | rpc_put_task(task); | |
7887 | return status; | |
7888 | } | |
fca78d6d | 7889 | |
97431204 AA |
7890 | /** |
7891 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7892 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7893 | */ | |
fca78d6d BS |
7894 | static int |
7895 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
7896 | struct nfs_fsinfo *info, |
7897 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
7898 | { |
7899 | struct nfs41_secinfo_no_name_args args = { | |
7900 | .style = SECINFO_STYLE_CURRENT_FH, | |
7901 | }; | |
7902 | struct nfs4_secinfo_res res = { | |
7903 | .flavors = flavors, | |
7904 | }; | |
7905 | struct rpc_message msg = { | |
7906 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7907 | .rpc_argp = &args, | |
7908 | .rpc_resp = &res, | |
7909 | }; | |
b1b3e136 | 7910 | struct rpc_clnt *clnt = server->client; |
7cb852df | 7911 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
7912 | int status; |
7913 | ||
7914 | if (use_integrity) { | |
7915 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
7916 | cred = nfs4_get_clid_cred(server->nfs_client); |
7917 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
7918 | } |
7919 | ||
7920 | dprintk("--> %s\n", __func__); | |
7921 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
7922 | &res.seq_res, 0); | |
7923 | dprintk("<-- %s status=%d\n", __func__, status); | |
7924 | ||
7cb852df WAA |
7925 | if (cred) |
7926 | put_rpccred(cred); | |
b1b3e136 WAA |
7927 | |
7928 | return status; | |
fca78d6d BS |
7929 | } |
7930 | ||
7931 | static int | |
7932 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7933 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7934 | { | |
7935 | struct nfs4_exception exception = { }; | |
7936 | int err; | |
7937 | do { | |
b1b3e136 WAA |
7938 | /* first try using integrity protection */ |
7939 | err = -NFS4ERR_WRONGSEC; | |
7940 | ||
7941 | /* try to use integrity protection with machine cred */ | |
7942 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
7943 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7944 | flavors, true); | |
7945 | ||
7946 | /* | |
7947 | * if unable to use integrity protection, or SECINFO with | |
7948 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
7949 | * disallowed by spec, but exists in deployed servers) use | |
7950 | * the current filesystem's rpc_client and the user cred. | |
7951 | */ | |
7952 | if (err == -NFS4ERR_WRONGSEC) | |
7953 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7954 | flavors, false); | |
7955 | ||
fca78d6d BS |
7956 | switch (err) { |
7957 | case 0: | |
7958 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 7959 | case -ENOTSUPP: |
05e9cfb4 | 7960 | goto out; |
fca78d6d BS |
7961 | default: |
7962 | err = nfs4_handle_exception(server, err, &exception); | |
7963 | } | |
7964 | } while (exception.retry); | |
05e9cfb4 | 7965 | out: |
fca78d6d BS |
7966 | return err; |
7967 | } | |
7968 | ||
7969 | static int | |
7970 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7971 | struct nfs_fsinfo *info) | |
7972 | { | |
7973 | int err; | |
7974 | struct page *page; | |
367156d9 | 7975 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 7976 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
7977 | struct nfs4_secinfo4 *secinfo; |
7978 | int i; | |
fca78d6d BS |
7979 | |
7980 | page = alloc_page(GFP_KERNEL); | |
7981 | if (!page) { | |
7982 | err = -ENOMEM; | |
7983 | goto out; | |
7984 | } | |
7985 | ||
7986 | flavors = page_address(page); | |
7987 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7988 | ||
7989 | /* | |
7990 | * Fall back on "guess and check" method if | |
7991 | * the server doesn't support SECINFO_NO_NAME | |
7992 | */ | |
78b19bae | 7993 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
7994 | err = nfs4_find_root_sec(server, fhandle, info); |
7995 | goto out_freepage; | |
7996 | } | |
7997 | if (err) | |
7998 | goto out_freepage; | |
7999 | ||
58a8cf12 WAA |
8000 | for (i = 0; i < flavors->num_flavors; i++) { |
8001 | secinfo = &flavors->flavors[i]; | |
8002 | ||
8003 | switch (secinfo->flavor) { | |
8004 | case RPC_AUTH_NULL: | |
8005 | case RPC_AUTH_UNIX: | |
8006 | case RPC_AUTH_GSS: | |
8007 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8008 | &secinfo->flavor_info); | |
8009 | break; | |
8010 | default: | |
8011 | flavor = RPC_AUTH_MAXFLAVOR; | |
8012 | break; | |
8013 | } | |
8014 | ||
4d4b69dd WAA |
8015 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8016 | flavor = RPC_AUTH_MAXFLAVOR; | |
8017 | ||
58a8cf12 WAA |
8018 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8019 | err = nfs4_lookup_root_sec(server, fhandle, | |
8020 | info, flavor); | |
8021 | if (!err) | |
8022 | break; | |
8023 | } | |
8024 | } | |
8025 | ||
8026 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8027 | err = -EPERM; | |
fca78d6d BS |
8028 | |
8029 | out_freepage: | |
8030 | put_page(page); | |
8031 | if (err == -EACCES) | |
8032 | return -EPERM; | |
8033 | out: | |
8034 | return err; | |
8035 | } | |
1cab0652 | 8036 | |
ab7cb0df TM |
8037 | static int _nfs41_test_stateid(struct nfs_server *server, |
8038 | nfs4_stateid *stateid, | |
8039 | struct rpc_cred *cred) | |
7d974794 BS |
8040 | { |
8041 | int status; | |
8042 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8043 | .stateid = stateid, |
7d974794 BS |
8044 | }; |
8045 | struct nfs41_test_stateid_res res; | |
8046 | struct rpc_message msg = { | |
8047 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8048 | .rpc_argp = &args, | |
8049 | .rpc_resp = &res, | |
ab7cb0df | 8050 | .rpc_cred = cred, |
7d974794 | 8051 | }; |
3787d506 WAA |
8052 | struct rpc_clnt *rpc_client = server->client; |
8053 | ||
8054 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8055 | &rpc_client, &msg); | |
1cab0652 | 8056 | |
38527b15 | 8057 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8058 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8059 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8060 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8061 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8062 | if (status != NFS_OK) { |
8063 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8064 | return status; |
38527b15 CL |
8065 | } |
8066 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8067 | return -res.status; |
7d974794 BS |
8068 | } |
8069 | ||
38527b15 CL |
8070 | /** |
8071 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8072 | * | |
8073 | * @server: server / transport on which to perform the operation | |
8074 | * @stateid: state ID to test | |
ab7cb0df | 8075 | * @cred: credential |
38527b15 CL |
8076 | * |
8077 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8078 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8079 | * failed or the state ID is not currently valid. | |
8080 | */ | |
ab7cb0df TM |
8081 | static int nfs41_test_stateid(struct nfs_server *server, |
8082 | nfs4_stateid *stateid, | |
8083 | struct rpc_cred *cred) | |
7d974794 BS |
8084 | { |
8085 | struct nfs4_exception exception = { }; | |
8086 | int err; | |
8087 | do { | |
ab7cb0df | 8088 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8089 | if (err != -NFS4ERR_DELAY) |
8090 | break; | |
8091 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8092 | } while (exception.retry); |
8093 | return err; | |
8094 | } | |
9aeda35f | 8095 | |
7c1d5fae TM |
8096 | struct nfs_free_stateid_data { |
8097 | struct nfs_server *server; | |
8098 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8099 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8100 | }; |
8101 | ||
8102 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8103 | { | |
8104 | struct nfs_free_stateid_data *data = calldata; | |
8105 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8106 | &data->args.seq_args, | |
8107 | &data->res.seq_res, | |
8108 | task); | |
8109 | } | |
8110 | ||
8111 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8112 | { | |
8113 | struct nfs_free_stateid_data *data = calldata; | |
8114 | ||
8115 | nfs41_sequence_done(task, &data->res.seq_res); | |
8116 | ||
8117 | switch (task->tk_status) { | |
8118 | case -NFS4ERR_DELAY: | |
8119 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
8120 | rpc_restart_call_prepare(task); | |
8121 | } | |
8122 | } | |
8123 | ||
8124 | static void nfs41_free_stateid_release(void *calldata) | |
8125 | { | |
8126 | kfree(calldata); | |
8127 | } | |
8128 | ||
17f26b12 | 8129 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8130 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8131 | .rpc_call_done = nfs41_free_stateid_done, | |
8132 | .rpc_release = nfs41_free_stateid_release, | |
8133 | }; | |
8134 | ||
8135 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8136 | nfs4_stateid *stateid, | |
ab7cb0df | 8137 | struct rpc_cred *cred, |
7c1d5fae TM |
8138 | bool privileged) |
8139 | { | |
9aeda35f BS |
8140 | struct rpc_message msg = { |
8141 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8142 | .rpc_cred = cred, |
9aeda35f | 8143 | }; |
7c1d5fae TM |
8144 | struct rpc_task_setup task_setup = { |
8145 | .rpc_client = server->client, | |
8146 | .rpc_message = &msg, | |
8147 | .callback_ops = &nfs41_free_stateid_ops, | |
8148 | .flags = RPC_TASK_ASYNC, | |
8149 | }; | |
8150 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8151 | |
3787d506 WAA |
8152 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8153 | &task_setup.rpc_client, &msg); | |
8154 | ||
38527b15 | 8155 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8156 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8157 | if (!data) | |
8158 | return ERR_PTR(-ENOMEM); | |
8159 | data->server = server; | |
8160 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8161 | ||
8162 | task_setup.callback_data = data; | |
8163 | ||
8164 | msg.rpc_argp = &data->args; | |
8165 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8166 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8167 | if (privileged) |
8168 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8169 | ||
8170 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8171 | } |
8172 | ||
38527b15 CL |
8173 | /** |
8174 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8175 | * | |
8176 | * @server: server / transport on which to perform the operation | |
8177 | * @stateid: state ID to release | |
ab7cb0df | 8178 | * @cred: credential |
38527b15 CL |
8179 | * |
8180 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8181 | * negative NFS4ERR value is returned. | |
8182 | */ | |
ab7cb0df TM |
8183 | static int nfs41_free_stateid(struct nfs_server *server, |
8184 | nfs4_stateid *stateid, | |
8185 | struct rpc_cred *cred) | |
9aeda35f | 8186 | { |
7c1d5fae TM |
8187 | struct rpc_task *task; |
8188 | int ret; | |
8189 | ||
ab7cb0df | 8190 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8191 | if (IS_ERR(task)) |
8192 | return PTR_ERR(task); | |
8193 | ret = rpc_wait_for_completion_task(task); | |
8194 | if (!ret) | |
8195 | ret = task->tk_status; | |
8196 | rpc_put_task(task); | |
8197 | return ret; | |
9aeda35f | 8198 | } |
36281caa | 8199 | |
c8b2d0bf TM |
8200 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
8201 | { | |
8202 | struct rpc_task *task; | |
ab7cb0df | 8203 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8204 | |
ab7cb0df | 8205 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8206 | nfs4_free_lock_state(server, lsp); |
8207 | if (IS_ERR(task)) | |
8208 | return PTR_ERR(task); | |
8209 | rpc_put_task(task); | |
8210 | return 0; | |
8211 | } | |
8212 | ||
36281caa TM |
8213 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8214 | const nfs4_stateid *s2) | |
8215 | { | |
2d2f24ad | 8216 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8217 | return false; |
8218 | ||
2d2f24ad | 8219 | if (s1->seqid == s2->seqid) |
36281caa | 8220 | return true; |
2d2f24ad | 8221 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8222 | return true; |
8223 | ||
8224 | return false; | |
8225 | } | |
8226 | ||
557134a3 AA |
8227 | #endif /* CONFIG_NFS_V4_1 */ |
8228 | ||
36281caa TM |
8229 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8230 | const nfs4_stateid *s2) | |
8231 | { | |
f597c537 | 8232 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8233 | } |
8234 | ||
8235 | ||
17280175 | 8236 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8237 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8238 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8239 | .recover_open = nfs4_open_reclaim, |
8240 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8241 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8242 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8243 | }; |
8244 | ||
591d71cb | 8245 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8246 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8247 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8248 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8249 | .recover_open = nfs4_open_reclaim, | |
8250 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8251 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8252 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8253 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8254 | }; |
8255 | #endif /* CONFIG_NFS_V4_1 */ | |
8256 | ||
17280175 | 8257 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8258 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8259 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
8260 | .recover_open = nfs4_open_expired, | |
8261 | .recover_lock = nfs4_lock_expired, | |
8262 | .establish_clid = nfs4_init_clientid, | |
8263 | }; | |
8264 | ||
8265 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8266 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8267 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8268 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8269 | .recover_open = nfs41_open_expired, |
8270 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8271 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8272 | }; |
591d71cb | 8273 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8274 | |
17280175 | 8275 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8276 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8277 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8278 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8279 | }; |
8280 | ||
8281 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8282 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8283 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8284 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8285 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8286 | }; |
8287 | #endif | |
8288 | ||
ec011fe8 | 8289 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8290 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8291 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8292 | }; |
8293 | ||
8294 | #if defined(CONFIG_NFS_V4_1) | |
8295 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8296 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8297 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8298 | }; |
8299 | #endif /* CONFIG_NFS_V4_1 */ | |
8300 | ||
97dc1359 TM |
8301 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8302 | .minor_version = 0, | |
39c6daae TM |
8303 | .init_caps = NFS_CAP_READDIRPLUS |
8304 | | NFS_CAP_ATOMIC_OPEN | |
8305 | | NFS_CAP_CHANGE_ATTR | |
8306 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
8307 | .init_client = nfs40_init_client, |
8308 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8309 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8310 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8311 | .free_lock_state = nfs4_release_lockowner, |
9915ea7e | 8312 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8313 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8314 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8315 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8316 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8317 | }; |
8318 | ||
8319 | #if defined(CONFIG_NFS_V4_1) | |
8320 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
8321 | .minor_version = 1, | |
39c6daae TM |
8322 | .init_caps = NFS_CAP_READDIRPLUS |
8323 | | NFS_CAP_ATOMIC_OPEN | |
8324 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 8325 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
8326 | | NFS_CAP_STATEID_NFSV41 |
8327 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
8328 | .init_client = nfs41_init_client, |
8329 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8330 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8331 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8332 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8333 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8334 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8335 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8336 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8337 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8338 | }; |
8339 | #endif | |
8340 | ||
42c2c424 SD |
8341 | #if defined(CONFIG_NFS_V4_2) |
8342 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8343 | .minor_version = 2, | |
7017310a BS |
8344 | .init_caps = NFS_CAP_READDIRPLUS |
8345 | | NFS_CAP_ATOMIC_OPEN | |
8346 | | NFS_CAP_CHANGE_ATTR | |
8347 | | NFS_CAP_POSIX_LOCK | |
8348 | | NFS_CAP_STATEID_NFSV41 | |
8349 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
8350 | .init_client = nfs41_init_client, |
8351 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8352 | .match_stateid = nfs41_match_stateid, |
8353 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8354 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8355 | .call_sync_ops = &nfs41_call_sync_ops, |
42c2c424 SD |
8356 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8357 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8358 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
8359 | }; | |
8360 | #endif | |
8361 | ||
97dc1359 TM |
8362 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8363 | [0] = &nfs_v4_0_minor_ops, | |
8364 | #if defined(CONFIG_NFS_V4_1) | |
8365 | [1] = &nfs_v4_1_minor_ops, | |
8366 | #endif | |
42c2c424 SD |
8367 | #if defined(CONFIG_NFS_V4_2) |
8368 | [2] = &nfs_v4_2_minor_ops, | |
8369 | #endif | |
97dc1359 TM |
8370 | }; |
8371 | ||
17f26b12 | 8372 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8373 | .create = nfs_create, |
8374 | .lookup = nfs_lookup, | |
8375 | .atomic_open = nfs_atomic_open, | |
8376 | .link = nfs_link, | |
8377 | .unlink = nfs_unlink, | |
8378 | .symlink = nfs_symlink, | |
8379 | .mkdir = nfs_mkdir, | |
8380 | .rmdir = nfs_rmdir, | |
8381 | .mknod = nfs_mknod, | |
8382 | .rename = nfs_rename, | |
8383 | .permission = nfs_permission, | |
8384 | .getattr = nfs_getattr, | |
8385 | .setattr = nfs_setattr, | |
8386 | .getxattr = generic_getxattr, | |
8387 | .setxattr = generic_setxattr, | |
8388 | .listxattr = generic_listxattr, | |
8389 | .removexattr = generic_removexattr, | |
8390 | }; | |
8391 | ||
92e1d5be | 8392 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8393 | .permission = nfs_permission, |
8394 | .getattr = nfs_getattr, | |
8395 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8396 | .getxattr = generic_getxattr, |
8397 | .setxattr = generic_setxattr, | |
8398 | .listxattr = generic_listxattr, | |
8399 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8400 | }; |
8401 | ||
509de811 | 8402 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8403 | .version = 4, /* protocol version */ |
8404 | .dentry_ops = &nfs4_dentry_operations, | |
8405 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8406 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8407 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8408 | .getroot = nfs4_proc_get_root, |
281cad46 | 8409 | .submount = nfs4_submount, |
ff9099f2 | 8410 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8411 | .getattr = nfs4_proc_getattr, |
8412 | .setattr = nfs4_proc_setattr, | |
8413 | .lookup = nfs4_proc_lookup, | |
8414 | .access = nfs4_proc_access, | |
8415 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8416 | .create = nfs4_proc_create, |
8417 | .remove = nfs4_proc_remove, | |
8418 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8419 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8420 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8421 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8422 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8423 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8424 | .link = nfs4_proc_link, |
8425 | .symlink = nfs4_proc_symlink, | |
8426 | .mkdir = nfs4_proc_mkdir, | |
8427 | .rmdir = nfs4_proc_remove, | |
8428 | .readdir = nfs4_proc_readdir, | |
8429 | .mknod = nfs4_proc_mknod, | |
8430 | .statfs = nfs4_proc_statfs, | |
8431 | .fsinfo = nfs4_proc_fsinfo, | |
8432 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8433 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
8434 | .decode_dirent = nfs4_decode_dirent, |
8435 | .read_setup = nfs4_proc_read_setup, | |
ea7c3303 | 8436 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 8437 | .read_done = nfs4_read_done, |
1da177e4 | 8438 | .write_setup = nfs4_proc_write_setup, |
c6cb80d0 | 8439 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 8440 | .write_done = nfs4_write_done, |
1da177e4 | 8441 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8442 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8443 | .commit_done = nfs4_commit_done, |
1da177e4 | 8444 | .lock = nfs4_proc_lock, |
e50a1c2e | 8445 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8446 | .close_context = nfs4_close_context, |
2b484297 | 8447 | .open_context = nfs4_atomic_open, |
011e2a7f | 8448 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8449 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8450 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8451 | .init_client = nfs4_init_client, |
cdb7eced | 8452 | .free_client = nfs4_free_client, |
1179acc6 BS |
8453 | .create_server = nfs4_create_server, |
8454 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8455 | }; |
8456 | ||
64c2ce8b AK |
8457 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8458 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8459 | .list = nfs4_xattr_list_nfs4_acl, | |
8460 | .get = nfs4_xattr_get_nfs4_acl, | |
8461 | .set = nfs4_xattr_set_nfs4_acl, | |
8462 | }; | |
8463 | ||
8464 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8465 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8466 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8467 | &nfs4_xattr_nfs4_label_handler, | |
8468 | #endif | |
64c2ce8b AK |
8469 | NULL |
8470 | }; | |
8471 | ||
1da177e4 LT |
8472 | /* |
8473 | * Local variables: | |
8474 | * c-basic-offset: 8 | |
8475 | * End: | |
8476 | */ |