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 | ||
f3792d63 TM |
1955 | /* |
1956 | * Additional permission checks in order to distinguish between an | |
1957 | * open for read, and an open for execute. This works around the | |
1958 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
1959 | * the same. | |
1960 | * Note that in the non-execute case, we want to turn off permission | |
1961 | * checking if we just created a new file (POSIX open() semantics). | |
1962 | */ | |
6168f62c WAA |
1963 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1964 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1965 | struct nfs4_state *state, fmode_t fmode, |
1966 | int openflags) | |
6168f62c WAA |
1967 | { |
1968 | struct nfs_access_entry cache; | |
1969 | u32 mask; | |
1970 | ||
1971 | /* access call failed or for some reason the server doesn't | |
1972 | * support any access modes -- defer access call until later */ | |
1973 | if (opendata->o_res.access_supported == 0) | |
1974 | return 0; | |
1975 | ||
1976 | mask = 0; | |
f3792d63 TM |
1977 | /* |
1978 | * Use openflags to check for exec, because fmode won't | |
1979 | * always have FMODE_EXEC set when file open for exec. | |
1980 | */ | |
f8d9a897 WAA |
1981 | if (openflags & __FMODE_EXEC) { |
1982 | /* ONLY check for exec rights */ | |
1983 | mask = MAY_EXEC; | |
f3792d63 | 1984 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 1985 | mask = MAY_READ; |
6168f62c WAA |
1986 | |
1987 | cache.cred = cred; | |
1988 | cache.jiffies = jiffies; | |
1989 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1990 | nfs_access_add_cache(state->inode, &cache); | |
1991 | ||
bbd3a8ee | 1992 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1993 | return 0; |
1994 | ||
1995 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1996 | nfs4_close_state(state, fmode); | |
998f40b5 | 1997 | return -EACCES; |
6168f62c WAA |
1998 | } |
1999 | ||
b257957e AB |
2000 | /* |
2001 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2002 | */ | |
2003 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2004 | { | |
2005 | struct inode *dir = data->dir->d_inode; | |
2006 | struct nfs_server *server = NFS_SERVER(dir); | |
2007 | struct nfs_openargs *o_arg = &data->o_arg; | |
2008 | struct nfs_openres *o_res = &data->o_res; | |
2009 | int status; | |
2010 | ||
2011 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2012 | if (!data->rpc_done) |
2013 | return status; | |
2014 | if (status != 0) { | |
2015 | if (status == -NFS4ERR_BADNAME && | |
2016 | !(o_arg->open_flags & O_CREAT)) | |
2017 | return -ENOENT; | |
24ac23ab | 2018 | return status; |
08ef7bd3 | 2019 | } |
24ac23ab | 2020 | |
6926afd1 TM |
2021 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2022 | ||
5bc2afc2 | 2023 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2024 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2025 | if (o_arg->open_flags & O_EXCL) |
2026 | data->file_created = 1; | |
2027 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2028 | data->file_created = 1; | |
2029 | } | |
0df5dd4a TM |
2030 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2031 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2032 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2033 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2034 | if (status != 0) |
24ac23ab | 2035 | return status; |
1da177e4 LT |
2036 | } |
2037 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2038 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2039 | return 0; |
1da177e4 LT |
2040 | } |
2041 | ||
d83217c1 AA |
2042 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2043 | { | |
2044 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2045 | } | |
2046 | ||
1da177e4 LT |
2047 | /* |
2048 | * OPEN_EXPIRED: | |
2049 | * reclaim state on the server after a network partition. | |
2050 | * Assumes caller holds the appropriate lock | |
2051 | */ | |
539cd03a | 2052 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2053 | { |
e56e0b78 | 2054 | struct nfs4_opendata *opendata; |
864472e9 | 2055 | int ret; |
1da177e4 | 2056 | |
4a1c0893 | 2057 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2058 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2059 | if (IS_ERR(opendata)) |
2060 | return PTR_ERR(opendata); | |
864472e9 | 2061 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2062 | if (ret == -ESTALE) |
3d4ff43d | 2063 | d_drop(ctx->dentry); |
c6d00e63 | 2064 | nfs4_opendata_put(opendata); |
864472e9 | 2065 | return ret; |
1da177e4 LT |
2066 | } |
2067 | ||
a9ed2e25 | 2068 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2069 | { |
539cd03a | 2070 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2071 | struct nfs4_exception exception = { }; |
2072 | int err; | |
2073 | ||
2074 | do { | |
539cd03a | 2075 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2076 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2077 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2078 | continue; | |
a9ed2e25 TM |
2079 | switch (err) { |
2080 | default: | |
2081 | goto out; | |
2082 | case -NFS4ERR_GRACE: | |
2083 | case -NFS4ERR_DELAY: | |
2084 | nfs4_handle_exception(server, err, &exception); | |
2085 | err = 0; | |
2086 | } | |
202b50dc | 2087 | } while (exception.retry); |
a9ed2e25 | 2088 | out: |
202b50dc TM |
2089 | return err; |
2090 | } | |
2091 | ||
1da177e4 LT |
2092 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2093 | { | |
1da177e4 | 2094 | struct nfs_open_context *ctx; |
864472e9 | 2095 | int ret; |
1da177e4 | 2096 | |
864472e9 TM |
2097 | ctx = nfs4_state_find_open_context(state); |
2098 | if (IS_ERR(ctx)) | |
91876b13 | 2099 | return -EAGAIN; |
539cd03a | 2100 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2101 | put_nfs_open_context(ctx); |
2102 | return ret; | |
1da177e4 LT |
2103 | } |
2104 | ||
f062eb6c | 2105 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 2106 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2107 | { |
f062eb6c | 2108 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd | 2109 | nfs4_stateid *stateid = &state->stateid; |
ab7cb0df TM |
2110 | struct nfs_delegation *delegation; |
2111 | struct rpc_cred *cred = NULL; | |
2112 | int status = -NFS4ERR_BAD_STATEID; | |
3e60ffdd CL |
2113 | |
2114 | /* If a state reset has been done, test_stateid is unneeded */ | |
2115 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
2116 | return; | |
2117 | ||
ab7cb0df TM |
2118 | /* Get the delegation credential for use by test/free_stateid */ |
2119 | rcu_read_lock(); | |
2120 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
2121 | if (delegation != NULL && | |
2122 | nfs4_stateid_match(&delegation->stateid, stateid)) { | |
2123 | cred = get_rpccred(delegation->cred); | |
2124 | rcu_read_unlock(); | |
2125 | status = nfs41_test_stateid(server, stateid, cred); | |
08cb47fa | 2126 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
ab7cb0df TM |
2127 | } else |
2128 | rcu_read_unlock(); | |
2129 | ||
3e60ffdd CL |
2130 | if (status != NFS_OK) { |
2131 | /* Free the stateid unless the server explicitly | |
2132 | * informs us the stateid is unrecognized. */ | |
2133 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2134 | nfs41_free_stateid(server, stateid, cred); |
6938867e | 2135 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2136 | |
6938867e BS |
2137 | write_seqlock(&state->seqlock); |
2138 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2139 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2140 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2141 | } | |
ab7cb0df TM |
2142 | |
2143 | if (cred != NULL) | |
2144 | put_rpccred(cred); | |
3e60ffdd CL |
2145 | } |
2146 | ||
2147 | /** | |
2148 | * nfs41_check_open_stateid - possibly free an open stateid | |
2149 | * | |
2150 | * @state: NFSv4 state for an inode | |
2151 | * | |
2152 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2153 | * Otherwise a negative NFS4ERR value is returned. | |
2154 | */ | |
2155 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2156 | { | |
2157 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2158 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2159 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2160 | int status; |
2161 | ||
2162 | /* If a state reset has been done, test_stateid is unneeded */ | |
2163 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2164 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2165 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2166 | return -NFS4ERR_BAD_STATEID; | |
2167 | ||
ab7cb0df | 2168 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2169 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2170 | if (status != NFS_OK) { |
2171 | /* Free the stateid unless the server explicitly | |
2172 | * informs us the stateid is unrecognized. */ | |
2173 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2174 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2175 | |
2176 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2177 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2178 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2179 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2180 | } |
2181 | return status; | |
2182 | } | |
2183 | ||
2184 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2185 | { | |
eb64cf96 | 2186 | int status; |
b01dd1d8 | 2187 | |
3e60ffdd CL |
2188 | nfs41_clear_delegation_stateid(state); |
2189 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2190 | if (status != NFS_OK) |
2191 | status = nfs4_open_expired(sp, state); | |
2192 | return status; | |
f062eb6c BS |
2193 | } |
2194 | #endif | |
2195 | ||
aa53ed54 JL |
2196 | /* |
2197 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2198 | * fields corresponding to attributes that were used to store the verifier. | |
2199 | * Make sure we clobber those fields in the later setattr call | |
2200 | */ | |
2201 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2202 | { | |
2203 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2204 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2205 | sattr->ia_valid |= ATTR_ATIME; | |
2206 | ||
2207 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2208 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2209 | sattr->ia_valid |= ATTR_MTIME; | |
2210 | } | |
2211 | ||
c21443c2 TM |
2212 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2213 | fmode_t fmode, | |
2214 | int flags, | |
3efb9722 | 2215 | struct nfs_open_context *ctx) |
c21443c2 TM |
2216 | { |
2217 | struct nfs4_state_owner *sp = opendata->owner; | |
2218 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2219 | struct dentry *dentry; |
c21443c2 TM |
2220 | struct nfs4_state *state; |
2221 | unsigned int seq; | |
2222 | int ret; | |
2223 | ||
2224 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2225 | ||
2226 | ret = _nfs4_proc_open(opendata); | |
2227 | if (ret != 0) | |
2228 | goto out; | |
2229 | ||
2230 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2231 | ret = PTR_ERR(state); | |
2232 | if (IS_ERR(state)) | |
2233 | goto out; | |
2234 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2235 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2236 | ||
275bb307 TM |
2237 | dentry = opendata->dentry; |
2238 | if (dentry->d_inode == NULL) { | |
2239 | /* FIXME: Is this d_drop() ever needed? */ | |
2240 | d_drop(dentry); | |
2241 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2242 | if (dentry == NULL) { | |
2243 | dentry = opendata->dentry; | |
2244 | } else if (dentry != ctx->dentry) { | |
2245 | dput(ctx->dentry); | |
2246 | ctx->dentry = dget(dentry); | |
2247 | } | |
2248 | nfs_set_verifier(dentry, | |
2249 | nfs_save_change_attribute(opendata->dir->d_inode)); | |
2250 | } | |
2251 | ||
c21443c2 TM |
2252 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2253 | if (ret != 0) | |
2254 | goto out; | |
2255 | ||
3efb9722 | 2256 | ctx->state = state; |
c45ffdd2 TM |
2257 | if (dentry->d_inode == state->inode) { |
2258 | nfs_inode_attach_open_context(ctx); | |
2259 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2260 | nfs4_schedule_stateid_recovery(server, state); | |
2261 | } | |
c21443c2 TM |
2262 | out: |
2263 | return ret; | |
2264 | } | |
2265 | ||
1da177e4 | 2266 | /* |
24ac23ab | 2267 | * Returns a referenced nfs4_state |
1da177e4 | 2268 | */ |
82be417a | 2269 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2270 | struct nfs_open_context *ctx, |
82be417a AA |
2271 | int flags, |
2272 | struct iattr *sattr, | |
5bc2afc2 TM |
2273 | struct nfs4_label *label, |
2274 | int *opened) | |
1da177e4 LT |
2275 | { |
2276 | struct nfs4_state_owner *sp; | |
2277 | struct nfs4_state *state = NULL; | |
2278 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2279 | struct nfs4_opendata *opendata; |
4197a055 TM |
2280 | struct dentry *dentry = ctx->dentry; |
2281 | struct rpc_cred *cred = ctx->cred; | |
2282 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2283 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2284 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2285 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2286 | int status; |
1da177e4 LT |
2287 | |
2288 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2289 | status = -ENOMEM; |
d1e284d5 TM |
2290 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2291 | if (sp == NULL) { | |
1da177e4 LT |
2292 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2293 | goto out_err; | |
2294 | } | |
58d9714a TM |
2295 | status = nfs4_recover_expired_lease(server); |
2296 | if (status != 0) | |
b4454fe1 | 2297 | goto err_put_state_owner; |
82a2c1b7 AV |
2298 | if (dentry->d_inode != NULL) |
2299 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2300 | status = -ENOMEM; |
49f9a0fa TM |
2301 | if (dentry->d_inode) |
2302 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2303 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2304 | label, claim, GFP_KERNEL); |
e56e0b78 | 2305 | if (opendata == NULL) |
95d35cb4 | 2306 | goto err_put_state_owner; |
1da177e4 | 2307 | |
14c43f76 DQ |
2308 | if (label) { |
2309 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2310 | if (IS_ERR(olabel)) { | |
2311 | status = PTR_ERR(olabel); | |
2312 | goto err_opendata_put; | |
2313 | } | |
2314 | } | |
2315 | ||
e911b815 TM |
2316 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2317 | if (!opendata->f_attr.mdsthreshold) { | |
2318 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2319 | if (!opendata->f_attr.mdsthreshold) | |
2320 | goto err_free_label; | |
2321 | } | |
1549210f | 2322 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2323 | } |
82a2c1b7 AV |
2324 | if (dentry->d_inode != NULL) |
2325 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2326 | |
3efb9722 | 2327 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2328 | if (status != 0) |
14c43f76 | 2329 | goto err_free_label; |
3efb9722 | 2330 | state = ctx->state; |
6168f62c | 2331 | |
549b19cc TM |
2332 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2333 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2334 | nfs4_exclusive_attrset(opendata, sattr); |
2335 | ||
2336 | nfs_fattr_init(opendata->o_res.f_attr); | |
2337 | status = nfs4_do_setattr(state->inode, cred, | |
2338 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2339 | state, label, olabel); |
2340 | if (status == 0) { | |
0ab64e0e | 2341 | nfs_setattr_update_inode(state->inode, sattr); |
1775fd3e | 2342 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); |
aa9c2669 | 2343 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2344 | } |
0ab64e0e | 2345 | } |
5bc2afc2 TM |
2346 | if (opendata->file_created) |
2347 | *opened |= FILE_CREATED; | |
82be417a | 2348 | |
e911b815 | 2349 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2350 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2351 | opendata->f_attr.mdsthreshold = NULL; |
2352 | } | |
82be417a | 2353 | |
14c43f76 DQ |
2354 | nfs4_label_free(olabel); |
2355 | ||
c6d00e63 | 2356 | nfs4_opendata_put(opendata); |
1da177e4 | 2357 | nfs4_put_state_owner(sp); |
1da177e4 | 2358 | return 0; |
14c43f76 DQ |
2359 | err_free_label: |
2360 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2361 | err_opendata_put: |
2362 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2363 | err_put_state_owner: |
2364 | nfs4_put_state_owner(sp); | |
1da177e4 | 2365 | out_err: |
1da177e4 LT |
2366 | return status; |
2367 | } | |
2368 | ||
2369 | ||
82be417a | 2370 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2371 | struct nfs_open_context *ctx, |
82be417a AA |
2372 | int flags, |
2373 | struct iattr *sattr, | |
5bc2afc2 TM |
2374 | struct nfs4_label *label, |
2375 | int *opened) | |
1da177e4 | 2376 | { |
49f9a0fa | 2377 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2378 | struct nfs4_exception exception = { }; |
2379 | struct nfs4_state *res; | |
2380 | int status; | |
2381 | ||
2382 | do { | |
5bc2afc2 | 2383 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2384 | res = ctx->state; |
42113a75 | 2385 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2386 | if (status == 0) |
2387 | break; | |
2388 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2389 | * book-keeping w.r.t. state-changing operations | |
2390 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2391 | * It is actually a sign of a bug on the client or on the server. | |
2392 | * | |
2393 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2394 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2395 | * have unhashed the old state_owner for us, and that we can |
2396 | * therefore safely retry using a new one. We should still warn | |
2397 | * the user though... | |
2398 | */ | |
2399 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2400 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2401 | " returned a bad sequence-id error!\n", |
2402 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2403 | exception.retry = 1; |
2404 | continue; | |
2405 | } | |
550f5747 TM |
2406 | /* |
2407 | * BAD_STATEID on OPEN means that the server cancelled our | |
2408 | * state before it received the OPEN_CONFIRM. | |
2409 | * Recover by retrying the request as per the discussion | |
2410 | * on Page 181 of RFC3530. | |
2411 | */ | |
2412 | if (status == -NFS4ERR_BAD_STATEID) { | |
2413 | exception.retry = 1; | |
2414 | continue; | |
2415 | } | |
aac00a8d TM |
2416 | if (status == -EAGAIN) { |
2417 | /* We must have found a delegation */ | |
2418 | exception.retry = 1; | |
2419 | continue; | |
2420 | } | |
49f9a0fa TM |
2421 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2422 | continue; | |
2423 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2424 | status, &exception)); |
2425 | } while (exception.retry); | |
2426 | return res; | |
2427 | } | |
2428 | ||
659bfcd6 TM |
2429 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2430 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2431 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2432 | struct nfs4_label *olabel) | |
1da177e4 | 2433 | { |
3e4f6290 | 2434 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2435 | struct nfs_setattrargs arg = { |
3e4f6290 | 2436 | .fh = NFS_FH(inode), |
1da177e4 LT |
2437 | .iap = sattr, |
2438 | .server = server, | |
2439 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2440 | .label = ilabel, |
1da177e4 LT |
2441 | }; |
2442 | struct nfs_setattrres res = { | |
2443 | .fattr = fattr, | |
1775fd3e | 2444 | .label = olabel, |
1da177e4 LT |
2445 | .server = server, |
2446 | }; | |
2447 | struct rpc_message msg = { | |
659bfcd6 TM |
2448 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2449 | .rpc_argp = &arg, | |
2450 | .rpc_resp = &res, | |
2451 | .rpc_cred = cred, | |
1da177e4 | 2452 | }; |
26e976a8 | 2453 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2454 | fmode_t fmode; |
2455 | bool truncate; | |
65e4308d | 2456 | int status; |
1da177e4 | 2457 | |
aa9c2669 DQ |
2458 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2459 | if (ilabel) | |
2460 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2461 | ||
0e574af1 | 2462 | nfs_fattr_init(fattr); |
1da177e4 | 2463 | |
ee3ae84e TM |
2464 | /* Servers should only apply open mode checks for file size changes */ |
2465 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2466 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2467 | ||
2468 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2469 | /* Use that stateid */ | |
0418dae1 | 2470 | } else if (truncate && state != NULL) { |
2a369153 TM |
2471 | struct nfs_lockowner lockowner = { |
2472 | .l_owner = current->files, | |
2473 | .l_pid = current->tgid, | |
2474 | }; | |
0418dae1 TM |
2475 | if (!nfs4_valid_open_stateid(state)) |
2476 | return -EBADF; | |
2477 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2478 | &lockowner) == -EIO) | |
2479 | return -EBADF; | |
08e9eac4 | 2480 | } else |
f597c537 | 2481 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2482 | |
7c513058 | 2483 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2484 | if (status == 0 && state != NULL) |
2485 | renew_lease(server, timestamp); | |
65e4308d | 2486 | return status; |
1da177e4 LT |
2487 | } |
2488 | ||
659bfcd6 TM |
2489 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2490 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2491 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2492 | struct nfs4_label *olabel) | |
1da177e4 | 2493 | { |
3e4f6290 | 2494 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2495 | struct nfs4_exception exception = { |
2496 | .state = state, | |
3114ea7a | 2497 | .inode = inode, |
a1d0b5ee | 2498 | }; |
1da177e4 LT |
2499 | int err; |
2500 | do { | |
1775fd3e | 2501 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2502 | trace_nfs4_setattr(inode, err); |
451146be TM |
2503 | switch (err) { |
2504 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2505 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2506 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2507 | "applying open mode checks to " | |
2508 | "a SETATTR that is not " | |
2509 | "changing file size.\n", | |
2510 | server->nfs_client->cl_hostname); | |
2511 | } | |
451146be TM |
2512 | if (state && !(state->state & FMODE_WRITE)) { |
2513 | err = -EBADF; | |
2514 | if (sattr->ia_valid & ATTR_OPEN) | |
2515 | err = -EACCES; | |
2516 | goto out; | |
2517 | } | |
2518 | } | |
2519 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2520 | } while (exception.retry); |
451146be | 2521 | out: |
1da177e4 LT |
2522 | return err; |
2523 | } | |
2524 | ||
2525 | struct nfs4_closedata { | |
2526 | struct inode *inode; | |
2527 | struct nfs4_state *state; | |
2528 | struct nfs_closeargs arg; | |
2529 | struct nfs_closeres res; | |
516a6af6 | 2530 | struct nfs_fattr fattr; |
26e976a8 | 2531 | unsigned long timestamp; |
f7e8917a FI |
2532 | bool roc; |
2533 | u32 roc_barrier; | |
1da177e4 LT |
2534 | }; |
2535 | ||
963d8fe5 | 2536 | static void nfs4_free_closedata(void *data) |
9512135d | 2537 | { |
963d8fe5 TM |
2538 | struct nfs4_closedata *calldata = data; |
2539 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2540 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2541 | |
f7e8917a FI |
2542 | if (calldata->roc) |
2543 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2544 | nfs4_put_open_state(calldata->state); |
2545 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2546 | nfs4_put_state_owner(sp); |
322b2b90 | 2547 | nfs_sb_deactive(sb); |
9512135d TM |
2548 | kfree(calldata); |
2549 | } | |
2550 | ||
963d8fe5 | 2551 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2552 | { |
963d8fe5 | 2553 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2554 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2555 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2556 | ||
a3ca5651 | 2557 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2558 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2559 | return; | |
42113a75 | 2560 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2561 | /* hmm. we are done with the inode, and in the process of freeing |
2562 | * the state_owner. we keep this around to process errors | |
2563 | */ | |
1da177e4 LT |
2564 | switch (task->tk_status) { |
2565 | case 0: | |
f7e8917a FI |
2566 | if (calldata->roc) |
2567 | pnfs_roc_set_barrier(state->inode, | |
2568 | calldata->roc_barrier); | |
226056c5 | 2569 | nfs_clear_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2570 | renew_lease(server, calldata->timestamp); |
226056c5 | 2571 | goto out_release; |
69794ad7 | 2572 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2573 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2574 | case -NFS4ERR_OLD_STATEID: |
2575 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2576 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2577 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2578 | break; |
1da177e4 | 2579 | default: |
69794ad7 | 2580 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { |
72211dbe | 2581 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2582 | goto out_release; |
2583 | } | |
1da177e4 | 2584 | } |
226056c5 | 2585 | nfs_clear_open_stateid(state, NULL, calldata->arg.fmode); |
69794ad7 | 2586 | out_release: |
72211dbe | 2587 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2588 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2589 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2590 | } |
2591 | ||
4ce70ada | 2592 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2593 | { |
4ce70ada | 2594 | struct nfs4_closedata *calldata = data; |
9512135d | 2595 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2596 | struct inode *inode = calldata->inode; |
88069f77 | 2597 | int call_close = 0; |
9512135d | 2598 | |
a3ca5651 | 2599 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2600 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2601 | goto out_wait; |
003707c7 | 2602 | |
88069f77 TM |
2603 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2604 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2605 | spin_lock(&state->owner->so_lock); |
003707c7 | 2606 | /* Calculate the change in open mode */ |
e7616923 | 2607 | if (state->n_rdwr == 0) { |
003707c7 | 2608 | if (state->n_rdonly == 0) { |
88069f77 TM |
2609 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2610 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2611 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2612 | } |
2613 | if (state->n_wronly == 0) { | |
88069f77 TM |
2614 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2615 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2616 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2617 | } |
e7616923 | 2618 | } |
5d422301 TM |
2619 | if (!nfs4_valid_open_stateid(state)) |
2620 | call_close = 0; | |
4cecb76f | 2621 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2622 | |
2623 | if (!call_close) { | |
963d8fe5 | 2624 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2625 | goto out_no_action; |
9512135d | 2626 | } |
88069f77 | 2627 | |
f7e8917a | 2628 | if (calldata->arg.fmode == 0) { |
88069f77 | 2629 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2630 | if (calldata->roc && |
b9536ad5 AA |
2631 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2632 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2633 | goto out_wait; |
b9536ad5 | 2634 | } |
f7e8917a | 2635 | } |
88069f77 | 2636 | |
516a6af6 | 2637 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2638 | calldata->timestamp = jiffies; |
7fdab069 | 2639 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2640 | &calldata->arg.seq_args, |
2641 | &calldata->res.seq_res, | |
2240a9e2 TM |
2642 | task) != 0) |
2643 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2644 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2645 | return; |
2646 | out_no_action: | |
2647 | task->tk_action = NULL; | |
2648 | out_wait: | |
2649 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2650 | } |
2651 | ||
963d8fe5 | 2652 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2653 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2654 | .rpc_call_done = nfs4_close_done, |
2655 | .rpc_release = nfs4_free_closedata, | |
2656 | }; | |
2657 | ||
1da177e4 LT |
2658 | /* |
2659 | * It is possible for data to be read/written from a mem-mapped file | |
2660 | * after the sys_close call (which hits the vfs layer as a flush). | |
2661 | * This means that we can't safely call nfsv4 close on a file until | |
2662 | * the inode is cleared. This in turn means that we are not good | |
2663 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2664 | * share state even when we are done with one of the three share | |
2665 | * stateid's in the inode. | |
2666 | * | |
2667 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2668 | */ | |
1f7977c1 | 2669 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2670 | { |
4a35bd41 | 2671 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2672 | struct nfs4_closedata *calldata; |
b39e625b TM |
2673 | struct nfs4_state_owner *sp = state->owner; |
2674 | struct rpc_task *task; | |
5138fde0 TM |
2675 | struct rpc_message msg = { |
2676 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2677 | .rpc_cred = state->owner->so_cred, | |
2678 | }; | |
c970aa85 TM |
2679 | struct rpc_task_setup task_setup_data = { |
2680 | .rpc_client = server->client, | |
5138fde0 | 2681 | .rpc_message = &msg, |
c970aa85 | 2682 | .callback_ops = &nfs4_close_ops, |
101070ca | 2683 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2684 | .flags = RPC_TASK_ASYNC, |
2685 | }; | |
9512135d | 2686 | int status = -ENOMEM; |
1da177e4 | 2687 | |
fa940720 WAA |
2688 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2689 | &task_setup_data.rpc_client, &msg); | |
2690 | ||
8535b2be | 2691 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2692 | if (calldata == NULL) |
9512135d | 2693 | goto out; |
a9c92d6b | 2694 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2695 | calldata->inode = state->inode; |
1da177e4 | 2696 | calldata->state = state; |
4a35bd41 | 2697 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2698 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2699 | /* Serialization for the sequence id */ |
8535b2be | 2700 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2701 | if (calldata->arg.seqid == NULL) |
2702 | goto out_free_calldata; | |
dc0b027d | 2703 | calldata->arg.fmode = 0; |
a65318bf | 2704 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2705 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2706 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2707 | calldata->res.server = server; |
1f7977c1 | 2708 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2709 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2710 | |
1174dd1f TM |
2711 | msg.rpc_argp = &calldata->arg; |
2712 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2713 | task_setup_data.callback_data = calldata; |
2714 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2715 | if (IS_ERR(task)) |
2716 | return PTR_ERR(task); | |
a49c3c77 TM |
2717 | status = 0; |
2718 | if (wait) | |
2719 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2720 | rpc_put_task(task); |
a49c3c77 | 2721 | return status; |
9512135d TM |
2722 | out_free_calldata: |
2723 | kfree(calldata); | |
2724 | out: | |
b39e625b TM |
2725 | nfs4_put_open_state(state); |
2726 | nfs4_put_state_owner(sp); | |
9512135d | 2727 | return status; |
1da177e4 LT |
2728 | } |
2729 | ||
2b484297 | 2730 | static struct inode * |
5bc2afc2 TM |
2731 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2732 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2733 | { |
1da177e4 | 2734 | struct nfs4_state *state; |
aa9c2669 DQ |
2735 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2736 | ||
2737 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2738 | |
565277f6 | 2739 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2740 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2741 | |
2742 | nfs4_label_release_security(label); | |
2743 | ||
f46e0bd3 TM |
2744 | if (IS_ERR(state)) |
2745 | return ERR_CAST(state); | |
275bb307 | 2746 | return state->inode; |
1da177e4 LT |
2747 | } |
2748 | ||
1185a552 | 2749 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2750 | { |
2751 | if (ctx->state == NULL) | |
2752 | return; | |
2753 | if (is_sync) | |
643168c2 | 2754 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2755 | else |
643168c2 | 2756 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2757 | } |
1da177e4 | 2758 | |
b944dba3 TM |
2759 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2760 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 2761 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 2762 | |
1da177e4 LT |
2763 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2764 | { | |
43652ad5 BH |
2765 | struct nfs4_server_caps_arg args = { |
2766 | .fhandle = fhandle, | |
2767 | }; | |
1da177e4 LT |
2768 | struct nfs4_server_caps_res res = {}; |
2769 | struct rpc_message msg = { | |
2770 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2771 | .rpc_argp = &args, |
1da177e4 LT |
2772 | .rpc_resp = &res, |
2773 | }; | |
2774 | int status; | |
2775 | ||
7c513058 | 2776 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2777 | if (status == 0) { |
b944dba3 TM |
2778 | /* Sanity check the server answers */ |
2779 | switch (server->nfs_client->cl_minorversion) { | |
2780 | case 0: | |
2781 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
2782 | res.attr_bitmask[2] = 0; | |
2783 | break; | |
2784 | case 1: | |
2785 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
2786 | break; | |
2787 | case 2: | |
2788 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
2789 | } | |
1da177e4 | 2790 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
2791 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2792 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2793 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2794 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
2795 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
2796 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
2797 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
2798 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
2799 | server->caps |= NFS_CAP_ACLS; |
2800 | if (res.has_links != 0) | |
2801 | server->caps |= NFS_CAP_HARDLINKS; | |
2802 | if (res.has_symlinks != 0) | |
2803 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2804 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2805 | server->caps |= NFS_CAP_FILEID; | |
2806 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2807 | server->caps |= NFS_CAP_MODE; | |
2808 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2809 | server->caps |= NFS_CAP_NLINK; | |
2810 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2811 | server->caps |= NFS_CAP_OWNER; | |
2812 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2813 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2814 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2815 | server->caps |= NFS_CAP_ATIME; | |
2816 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2817 | server->caps |= NFS_CAP_CTIME; | |
2818 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2819 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2820 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2821 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2822 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2823 | #endif | |
2824 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2825 | sizeof(server->attr_bitmask)); | |
b944dba3 | 2826 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 2827 | |
a65318bf TM |
2828 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2829 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2830 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 2831 | server->cache_consistency_bitmask[2] = 0; |
1da177e4 | 2832 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2833 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2834 | } |
cccef3b9 | 2835 | |
1da177e4 LT |
2836 | return status; |
2837 | } | |
2838 | ||
55a97593 | 2839 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2840 | { |
2841 | struct nfs4_exception exception = { }; | |
2842 | int err; | |
2843 | do { | |
2844 | err = nfs4_handle_exception(server, | |
2845 | _nfs4_server_capabilities(server, fhandle), | |
2846 | &exception); | |
2847 | } while (exception.retry); | |
2848 | return err; | |
2849 | } | |
2850 | ||
2851 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2852 | struct nfs_fsinfo *info) | |
2853 | { | |
aa9c2669 | 2854 | u32 bitmask[3]; |
1da177e4 | 2855 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2856 | .bitmask = bitmask, |
1da177e4 LT |
2857 | }; |
2858 | struct nfs4_lookup_res res = { | |
2859 | .server = server, | |
0e574af1 | 2860 | .fattr = info->fattr, |
1da177e4 LT |
2861 | .fh = fhandle, |
2862 | }; | |
2863 | struct rpc_message msg = { | |
2864 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2865 | .rpc_argp = &args, | |
2866 | .rpc_resp = &res, | |
2867 | }; | |
008f55d0 | 2868 | |
aa9c2669 DQ |
2869 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2870 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2871 | /* | |
2872 | * Process the label in the upcoming getfattr | |
2873 | */ | |
2874 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2875 | ||
0e574af1 | 2876 | nfs_fattr_init(info->fattr); |
7c513058 | 2877 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2878 | } |
2879 | ||
2880 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2881 | struct nfs_fsinfo *info) | |
2882 | { | |
2883 | struct nfs4_exception exception = { }; | |
2884 | int err; | |
2885 | do { | |
fb8a5ba8 | 2886 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 2887 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
2888 | switch (err) { |
2889 | case 0: | |
2890 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2891 | goto out; |
fb8a5ba8 BS |
2892 | default: |
2893 | err = nfs4_handle_exception(server, err, &exception); | |
2894 | } | |
1da177e4 | 2895 | } while (exception.retry); |
05e9cfb4 | 2896 | out: |
1da177e4 LT |
2897 | return err; |
2898 | } | |
2899 | ||
8f70e95f BS |
2900 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2901 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2902 | { | |
c2190661 TM |
2903 | struct rpc_auth_create_args auth_args = { |
2904 | .pseudoflavor = flavor, | |
2905 | }; | |
8f70e95f BS |
2906 | struct rpc_auth *auth; |
2907 | int ret; | |
2908 | ||
c2190661 | 2909 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 2910 | if (IS_ERR(auth)) { |
75bc8821 | 2911 | ret = -EACCES; |
8f70e95f BS |
2912 | goto out; |
2913 | } | |
2914 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2915 | out: |
2916 | return ret; | |
2917 | } | |
2918 | ||
9a744ba3 CL |
2919 | /* |
2920 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2921 | * | |
2922 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2923 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2924 | * | |
2925 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2926 | * negative errno value. | |
2927 | */ | |
801a16dc | 2928 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2929 | struct nfs_fsinfo *info) |
1da177e4 | 2930 | { |
9a744ba3 CL |
2931 | /* Per 3530bis 15.33.5 */ |
2932 | static const rpc_authflavor_t flav_array[] = { | |
2933 | RPC_AUTH_GSS_KRB5P, | |
2934 | RPC_AUTH_GSS_KRB5I, | |
2935 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2936 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2937 | RPC_AUTH_NULL, |
2938 | }; | |
2939 | int status = -EPERM; | |
2940 | size_t i; | |
6a1a1e34 | 2941 | |
4d4b69dd WAA |
2942 | if (server->auth_info.flavor_len > 0) { |
2943 | /* try each flavor specified by user */ | |
2944 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
2945 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
2946 | server->auth_info.flavors[i]); | |
2947 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
2948 | continue; | |
2949 | break; | |
2950 | } | |
2951 | } else { | |
2952 | /* no flavors specified by user, try default list */ | |
2953 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
2954 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
2955 | flav_array[i]); | |
2956 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
2957 | continue; | |
2958 | break; | |
2959 | } | |
8f70e95f | 2960 | } |
9a744ba3 | 2961 | |
fb8a5ba8 BS |
2962 | /* |
2963 | * -EACCESS could mean that the user doesn't have correct permissions | |
2964 | * to access the mount. It could also mean that we tried to mount | |
2965 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2966 | * existing mount programs don't handle -EACCES very well so it should | |
2967 | * be mapped to -EPERM instead. | |
2968 | */ | |
2969 | if (status == -EACCES) | |
2970 | status = -EPERM; | |
801a16dc BS |
2971 | return status; |
2972 | } | |
2973 | ||
2ed4b95b CL |
2974 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2975 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2976 | { | |
2977 | int mv = server->nfs_client->cl_minorversion; | |
2978 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2979 | } | |
2980 | ||
2981 | /** | |
2982 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2983 | * @server: initialized nfs_server handle | |
2984 | * @fhandle: we fill in the pseudo-fs root file handle | |
2985 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 2986 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
2987 | * |
2988 | * Returns zero on success, or a negative errno. | |
801a16dc | 2989 | */ |
3028eb2b | 2990 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
2991 | struct nfs_fsinfo *info, |
2992 | bool auth_probe) | |
801a16dc | 2993 | { |
2ed4b95b CL |
2994 | int status; |
2995 | ||
5e6b1990 TM |
2996 | switch (auth_probe) { |
2997 | case false: | |
2998 | status = nfs4_lookup_root(server, fhandle, info); | |
2999 | if (status != -NFS4ERR_WRONGSEC) | |
3000 | break; | |
5e6b1990 | 3001 | default: |
2ed4b95b | 3002 | status = nfs4_do_find_root_sec(server, fhandle, info); |
5e6b1990 | 3003 | } |
2ed4b95b | 3004 | |
1da177e4 LT |
3005 | if (status == 0) |
3006 | status = nfs4_server_capabilities(server, fhandle); | |
3007 | if (status == 0) | |
3008 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3009 | |
c12e87f4 | 3010 | return nfs4_map_errors(status); |
1da177e4 LT |
3011 | } |
3012 | ||
bae36241 BS |
3013 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3014 | struct nfs_fsinfo *info) | |
3015 | { | |
3016 | int error; | |
3017 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3018 | struct nfs4_label *label = NULL; |
bae36241 BS |
3019 | |
3020 | error = nfs4_server_capabilities(server, mntfh); | |
3021 | if (error < 0) { | |
3022 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3023 | return error; | |
3024 | } | |
3025 | ||
14c43f76 DQ |
3026 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3027 | if (IS_ERR(label)) | |
3028 | return PTR_ERR(label); | |
3029 | ||
1775fd3e | 3030 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3031 | if (error < 0) { |
3032 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3033 | goto err_free_label; |
bae36241 BS |
3034 | } |
3035 | ||
3036 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3037 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3038 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3039 | ||
14c43f76 DQ |
3040 | err_free_label: |
3041 | nfs4_label_free(label); | |
3042 | ||
bae36241 BS |
3043 | return error; |
3044 | } | |
3045 | ||
6b97fd3d MN |
3046 | /* |
3047 | * Get locations and (maybe) other attributes of a referral. | |
3048 | * Note that we'll actually follow the referral later when | |
3049 | * we detect fsid mismatch in inode revalidation | |
3050 | */ | |
f05d147f BS |
3051 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3052 | const struct qstr *name, struct nfs_fattr *fattr, | |
3053 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3054 | { |
3055 | int status = -ENOMEM; | |
3056 | struct page *page = NULL; | |
3057 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3058 | |
3059 | page = alloc_page(GFP_KERNEL); | |
3060 | if (page == NULL) | |
3061 | goto out; | |
3062 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3063 | if (locations == NULL) | |
3064 | goto out; | |
3065 | ||
f05d147f | 3066 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3067 | if (status != 0) |
3068 | goto out; | |
519ae255 CL |
3069 | |
3070 | /* | |
3071 | * If the fsid didn't change, this is a migration event, not a | |
3072 | * referral. Cause us to drop into the exception handler, which | |
3073 | * will kick off migration recovery. | |
3074 | */ | |
6b97fd3d | 3075 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3076 | dprintk("%s: server did not return a different fsid for" |
3077 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3078 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3079 | goto out; |
3080 | } | |
533eb461 AA |
3081 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3082 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3083 | |
533eb461 | 3084 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3085 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3086 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3087 | out: | |
3088 | if (page) | |
3089 | __free_page(page); | |
5d7ca35a | 3090 | kfree(locations); |
6b97fd3d MN |
3091 | return status; |
3092 | } | |
3093 | ||
1775fd3e DQ |
3094 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3095 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3096 | { |
3097 | struct nfs4_getattr_arg args = { | |
3098 | .fh = fhandle, | |
3099 | .bitmask = server->attr_bitmask, | |
3100 | }; | |
3101 | struct nfs4_getattr_res res = { | |
3102 | .fattr = fattr, | |
1775fd3e | 3103 | .label = label, |
1da177e4 LT |
3104 | .server = server, |
3105 | }; | |
3106 | struct rpc_message msg = { | |
3107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3108 | .rpc_argp = &args, | |
3109 | .rpc_resp = &res, | |
3110 | }; | |
aa9c2669 DQ |
3111 | |
3112 | args.bitmask = nfs4_bitmask(server, label); | |
3113 | ||
0e574af1 | 3114 | nfs_fattr_init(fattr); |
7c513058 | 3115 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3116 | } |
3117 | ||
1775fd3e DQ |
3118 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3119 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3120 | { |
3121 | struct nfs4_exception exception = { }; | |
3122 | int err; | |
3123 | do { | |
b5f875a9 TM |
3124 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3125 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3126 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3127 | &exception); |
3128 | } while (exception.retry); | |
3129 | return err; | |
3130 | } | |
3131 | ||
3132 | /* | |
3133 | * The file is not closed if it is opened due to the a request to change | |
3134 | * the size of the file. The open call will not be needed once the | |
3135 | * VFS layer lookup-intents are implemented. | |
3136 | * | |
3137 | * Close is called when the inode is destroyed. | |
3138 | * If we haven't opened the file for O_WRONLY, we | |
3139 | * need to in the size_change case to obtain a stateid. | |
3140 | * | |
3141 | * Got race? | |
3142 | * Because OPEN is always done by name in nfsv4, it is | |
3143 | * possible that we opened a different file by the same | |
3144 | * name. We can recognize this race condition, but we | |
3145 | * can't do anything about it besides returning an error. | |
3146 | * | |
3147 | * This will be fixed with VFS changes (lookup-intent). | |
3148 | */ | |
3149 | static int | |
3150 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3151 | struct iattr *sattr) | |
3152 | { | |
08e9eac4 | 3153 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 3154 | struct rpc_cred *cred = NULL; |
d530838b | 3155 | struct nfs4_state *state = NULL; |
14c43f76 | 3156 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3157 | int status; |
3158 | ||
8a1636c4 | 3159 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 3160 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3161 | |
0e574af1 | 3162 | nfs_fattr_init(fattr); |
1da177e4 | 3163 | |
2669940d AA |
3164 | /* Deal with open(O_TRUNC) */ |
3165 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3166 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3167 | |
3168 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3169 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3170 | return 0; |
3171 | ||
d530838b | 3172 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3173 | if (sattr->ia_valid & ATTR_FILE) { |
3174 | struct nfs_open_context *ctx; | |
3175 | ||
3176 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3177 | if (ctx) { |
3178 | cred = ctx->cred; | |
3179 | state = ctx->state; | |
3180 | } | |
659bfcd6 | 3181 | } |
08e9eac4 | 3182 | |
14c43f76 DQ |
3183 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3184 | if (IS_ERR(label)) | |
3185 | return PTR_ERR(label); | |
3186 | ||
3187 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3188 | if (status == 0) { |
65e4308d | 3189 | nfs_setattr_update_inode(inode, sattr); |
aa9c2669 DQ |
3190 | nfs_setsecurity(inode, fattr, label); |
3191 | } | |
14c43f76 | 3192 | nfs4_label_free(label); |
1da177e4 LT |
3193 | return status; |
3194 | } | |
3195 | ||
0c2e53f1 TM |
3196 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3197 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3198 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3199 | { |
0c2e53f1 | 3200 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3201 | int status; |
3202 | struct nfs4_lookup_arg args = { | |
3203 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3204 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3205 | .name = name, |
3206 | }; | |
3207 | struct nfs4_lookup_res res = { | |
3208 | .server = server, | |
3209 | .fattr = fattr, | |
aa9c2669 | 3210 | .label = label, |
2b3de441 DH |
3211 | .fh = fhandle, |
3212 | }; | |
3213 | struct rpc_message msg = { | |
3214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3215 | .rpc_argp = &args, | |
3216 | .rpc_resp = &res, | |
3217 | }; | |
3218 | ||
aa9c2669 DQ |
3219 | args.bitmask = nfs4_bitmask(server, label); |
3220 | ||
2b3de441 DH |
3221 | nfs_fattr_init(fattr); |
3222 | ||
1da177e4 | 3223 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3224 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3225 | dprintk("NFS reply lookup: %d\n", status); |
3226 | return status; | |
3227 | } | |
3228 | ||
72de53ec | 3229 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3230 | { |
7ebb9315 | 3231 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3232 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3233 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3234 | fattr->nlink = 2; | |
3235 | } | |
3236 | ||
72de53ec BS |
3237 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3238 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3239 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3240 | { |
3241 | struct nfs4_exception exception = { }; | |
72de53ec | 3242 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3243 | int err; |
3244 | do { | |
1775fd3e | 3245 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3246 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3247 | switch (err) { |
08ef7bd3 | 3248 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3249 | err = -ENOENT; |
3250 | goto out; | |
0c2e53f1 | 3251 | case -NFS4ERR_MOVED: |
f05d147f | 3252 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 3253 | goto out; |
0c2e53f1 | 3254 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3255 | err = -EPERM; |
3256 | if (client != *clnt) | |
3257 | goto out; | |
66b06860 | 3258 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3259 | if (IS_ERR(client)) |
3260 | return PTR_ERR(client); | |
3261 | ||
3262 | exception.retry = 1; | |
3263 | break; | |
3264 | default: | |
3265 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3266 | } |
1da177e4 | 3267 | } while (exception.retry); |
72de53ec BS |
3268 | |
3269 | out: | |
3270 | if (err == 0) | |
3271 | *clnt = client; | |
3272 | else if (client != *clnt) | |
3273 | rpc_shutdown_client(client); | |
3274 | ||
1da177e4 LT |
3275 | return err; |
3276 | } | |
3277 | ||
80a16b21 | 3278 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3279 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3280 | struct nfs4_label *label) | |
72de53ec BS |
3281 | { |
3282 | int status; | |
3283 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3284 | ||
1775fd3e | 3285 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3286 | if (client != NFS_CLIENT(dir)) { |
3287 | rpc_shutdown_client(client); | |
3288 | nfs_fixup_secinfo_attributes(fattr); | |
3289 | } | |
3290 | return status; | |
3291 | } | |
3292 | ||
f05d147f BS |
3293 | struct rpc_clnt * |
3294 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3295 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3296 | { | |
b72888cb | 3297 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3298 | int status; |
f05d147f | 3299 | |
1775fd3e | 3300 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3301 | if (status < 0) |
f05d147f | 3302 | return ERR_PTR(status); |
b72888cb | 3303 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3304 | } |
3305 | ||
1da177e4 LT |
3306 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3307 | { | |
76b32999 | 3308 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3309 | struct nfs4_accessargs args = { |
3310 | .fh = NFS_FH(inode), | |
a4980e78 | 3311 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3312 | }; |
3313 | struct nfs4_accessres res = { | |
3314 | .server = server, | |
1da177e4 | 3315 | }; |
1da177e4 LT |
3316 | struct rpc_message msg = { |
3317 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3318 | .rpc_argp = &args, | |
3319 | .rpc_resp = &res, | |
3320 | .rpc_cred = entry->cred, | |
3321 | }; | |
3322 | int mode = entry->mask; | |
aa9c2669 | 3323 | int status = 0; |
1da177e4 LT |
3324 | |
3325 | /* | |
3326 | * Determine which access bits we want to ask for... | |
3327 | */ | |
3328 | if (mode & MAY_READ) | |
3329 | args.access |= NFS4_ACCESS_READ; | |
3330 | if (S_ISDIR(inode->i_mode)) { | |
3331 | if (mode & MAY_WRITE) | |
3332 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3333 | if (mode & MAY_EXEC) | |
3334 | args.access |= NFS4_ACCESS_LOOKUP; | |
3335 | } else { | |
3336 | if (mode & MAY_WRITE) | |
3337 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3338 | if (mode & MAY_EXEC) | |
3339 | args.access |= NFS4_ACCESS_EXECUTE; | |
3340 | } | |
c407d41a TM |
3341 | |
3342 | res.fattr = nfs_alloc_fattr(); | |
3343 | if (res.fattr == NULL) | |
3344 | return -ENOMEM; | |
3345 | ||
7c513058 | 3346 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3347 | if (!status) { |
6168f62c | 3348 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3349 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3350 | } |
c407d41a | 3351 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3352 | return status; |
3353 | } | |
3354 | ||
3355 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3356 | { | |
3357 | struct nfs4_exception exception = { }; | |
3358 | int err; | |
3359 | do { | |
c1578b76 TM |
3360 | err = _nfs4_proc_access(inode, entry); |
3361 | trace_nfs4_access(inode, err); | |
3362 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3363 | &exception); |
3364 | } while (exception.retry); | |
3365 | return err; | |
3366 | } | |
3367 | ||
3368 | /* | |
3369 | * TODO: For the time being, we don't try to get any attributes | |
3370 | * along with any of the zero-copy operations READ, READDIR, | |
3371 | * READLINK, WRITE. | |
3372 | * | |
3373 | * In the case of the first three, we want to put the GETATTR | |
3374 | * after the read-type operation -- this is because it is hard | |
3375 | * to predict the length of a GETATTR response in v4, and thus | |
3376 | * align the READ data correctly. This means that the GETATTR | |
3377 | * may end up partially falling into the page cache, and we should | |
3378 | * shift it into the 'tail' of the xdr_buf before processing. | |
3379 | * To do this efficiently, we need to know the total length | |
3380 | * of data received, which doesn't seem to be available outside | |
3381 | * of the RPC layer. | |
3382 | * | |
3383 | * In the case of WRITE, we also want to put the GETATTR after | |
3384 | * the operation -- in this case because we want to make sure | |
140150db | 3385 | * we get the post-operation mtime and size. |
1da177e4 LT |
3386 | * |
3387 | * Both of these changes to the XDR layer would in fact be quite | |
3388 | * minor, but I decided to leave them for a subsequent patch. | |
3389 | */ | |
3390 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3391 | unsigned int pgbase, unsigned int pglen) | |
3392 | { | |
3393 | struct nfs4_readlink args = { | |
3394 | .fh = NFS_FH(inode), | |
3395 | .pgbase = pgbase, | |
3396 | .pglen = pglen, | |
3397 | .pages = &page, | |
3398 | }; | |
f50c7000 | 3399 | struct nfs4_readlink_res res; |
1da177e4 LT |
3400 | struct rpc_message msg = { |
3401 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3402 | .rpc_argp = &args, | |
f50c7000 | 3403 | .rpc_resp = &res, |
1da177e4 LT |
3404 | }; |
3405 | ||
7c513058 | 3406 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3407 | } |
3408 | ||
3409 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3410 | unsigned int pgbase, unsigned int pglen) | |
3411 | { | |
3412 | struct nfs4_exception exception = { }; | |
3413 | int err; | |
3414 | do { | |
c1578b76 TM |
3415 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3416 | trace_nfs4_readlink(inode, err); | |
3417 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3418 | &exception); |
3419 | } while (exception.retry); | |
3420 | return err; | |
3421 | } | |
3422 | ||
1da177e4 | 3423 | /* |
8867fe58 | 3424 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3425 | */ |
1da177e4 LT |
3426 | static int |
3427 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3428 | int flags) |
1da177e4 | 3429 | { |
aa9c2669 | 3430 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3431 | struct nfs_open_context *ctx; |
1da177e4 | 3432 | struct nfs4_state *state; |
5bc2afc2 | 3433 | int opened = 0; |
1da177e4 LT |
3434 | int status = 0; |
3435 | ||
8867fe58 MS |
3436 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3437 | if (IS_ERR(ctx)) | |
3438 | return PTR_ERR(ctx); | |
3439 | ||
aa9c2669 DQ |
3440 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3441 | ||
a8a5da99 | 3442 | sattr->ia_mode &= ~current_umask(); |
5bc2afc2 | 3443 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); |
1da177e4 LT |
3444 | if (IS_ERR(state)) { |
3445 | status = PTR_ERR(state); | |
c0204fd2 | 3446 | goto out; |
1da177e4 | 3447 | } |
1da177e4 | 3448 | out: |
aa9c2669 | 3449 | nfs4_label_release_security(ilabel); |
8867fe58 | 3450 | put_nfs_open_context(ctx); |
1da177e4 LT |
3451 | return status; |
3452 | } | |
3453 | ||
3454 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3455 | { | |
16e42959 | 3456 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3457 | struct nfs_removeargs args = { |
1da177e4 | 3458 | .fh = NFS_FH(dir), |
26fe5750 | 3459 | .name = *name, |
16e42959 | 3460 | }; |
4fdc17b2 | 3461 | struct nfs_removeres res = { |
16e42959 | 3462 | .server = server, |
1da177e4 | 3463 | }; |
1da177e4 | 3464 | struct rpc_message msg = { |
4fdc17b2 TM |
3465 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3466 | .rpc_argp = &args, | |
3467 | .rpc_resp = &res, | |
1da177e4 | 3468 | }; |
778d2817 | 3469 | int status; |
1da177e4 | 3470 | |
7c513058 | 3471 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3472 | if (status == 0) |
16e42959 | 3473 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3474 | return status; |
3475 | } | |
3476 | ||
3477 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3478 | { | |
3479 | struct nfs4_exception exception = { }; | |
3480 | int err; | |
3481 | do { | |
078ea3df TM |
3482 | err = _nfs4_proc_remove(dir, name); |
3483 | trace_nfs4_remove(dir, name, err); | |
3484 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3485 | &exception); |
3486 | } while (exception.retry); | |
3487 | return err; | |
3488 | } | |
3489 | ||
e4eff1a6 | 3490 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3491 | { |
e4eff1a6 TM |
3492 | struct nfs_server *server = NFS_SERVER(dir); |
3493 | struct nfs_removeargs *args = msg->rpc_argp; | |
3494 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3495 | |
e4eff1a6 | 3496 | res->server = server; |
1da177e4 | 3497 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3498 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3499 | |
3500 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3501 | } |
3502 | ||
34e137cc BS |
3503 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3504 | { | |
d9afbd1b TM |
3505 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3506 | &data->args.seq_args, | |
3507 | &data->res.seq_res, | |
3508 | task); | |
1da177e4 LT |
3509 | } |
3510 | ||
e4eff1a6 | 3511 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3512 | { |
078ea3df TM |
3513 | struct nfs_unlinkdata *data = task->tk_calldata; |
3514 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3515 | |
14516c3a TM |
3516 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3517 | return 0; | |
9e33bed5 | 3518 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3519 | return 0; |
3520 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3521 | return 1; |
1da177e4 LT |
3522 | } |
3523 | ||
d3d4152a JL |
3524 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3525 | { | |
3526 | struct nfs_server *server = NFS_SERVER(dir); | |
3527 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3528 | struct nfs_renameres *res = msg->rpc_resp; | |
3529 | ||
3530 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3531 | res->server = server; |
a9c92d6b | 3532 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3533 | } |
3534 | ||
c6bfa1a1 BS |
3535 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3536 | { | |
d9afbd1b TM |
3537 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3538 | &data->args.seq_args, | |
3539 | &data->res.seq_res, | |
3540 | task); | |
d3d4152a JL |
3541 | } |
3542 | ||
3543 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3544 | struct inode *new_dir) | |
3545 | { | |
fbc6f7c2 TM |
3546 | struct nfs_renamedata *data = task->tk_calldata; |
3547 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3548 | |
3549 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3550 | return 0; | |
3551 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3552 | return 0; | |
3553 | ||
3554 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3555 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3556 | return 1; |
3557 | } | |
3558 | ||
1da177e4 LT |
3559 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3560 | { | |
91ba2eee | 3561 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3562 | struct nfs4_link_arg arg = { |
3563 | .fh = NFS_FH(inode), | |
3564 | .dir_fh = NFS_FH(dir), | |
3565 | .name = name, | |
91ba2eee TM |
3566 | .bitmask = server->attr_bitmask, |
3567 | }; | |
91ba2eee TM |
3568 | struct nfs4_link_res res = { |
3569 | .server = server, | |
1775fd3e | 3570 | .label = NULL, |
1da177e4 | 3571 | }; |
1da177e4 LT |
3572 | struct rpc_message msg = { |
3573 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3574 | .rpc_argp = &arg, | |
91ba2eee | 3575 | .rpc_resp = &res, |
1da177e4 | 3576 | }; |
136f2627 TM |
3577 | int status = -ENOMEM; |
3578 | ||
3579 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3580 | if (res.fattr == NULL) |
136f2627 | 3581 | goto out; |
1da177e4 | 3582 | |
14c43f76 DQ |
3583 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3584 | if (IS_ERR(res.label)) { | |
3585 | status = PTR_ERR(res.label); | |
3586 | goto out; | |
3587 | } | |
aa9c2669 | 3588 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3589 | |
7c513058 | 3590 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3591 | if (!status) { |
3592 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3593 | status = nfs_post_op_update_inode(inode, res.fattr); |
3594 | if (!status) | |
3595 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3596 | } |
14c43f76 DQ |
3597 | |
3598 | ||
3599 | nfs4_label_free(res.label); | |
3600 | ||
136f2627 | 3601 | out: |
136f2627 | 3602 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3603 | return status; |
3604 | } | |
3605 | ||
3606 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3607 | { | |
3608 | struct nfs4_exception exception = { }; | |
3609 | int err; | |
3610 | do { | |
3611 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3612 | _nfs4_proc_link(inode, dir, name), | |
3613 | &exception); | |
3614 | } while (exception.retry); | |
3615 | return err; | |
3616 | } | |
3617 | ||
57dc9a57 TM |
3618 | struct nfs4_createdata { |
3619 | struct rpc_message msg; | |
3620 | struct nfs4_create_arg arg; | |
3621 | struct nfs4_create_res res; | |
3622 | struct nfs_fh fh; | |
3623 | struct nfs_fattr fattr; | |
1775fd3e | 3624 | struct nfs4_label *label; |
57dc9a57 TM |
3625 | }; |
3626 | ||
3627 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3628 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3629 | { | |
3630 | struct nfs4_createdata *data; | |
3631 | ||
3632 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3633 | if (data != NULL) { | |
3634 | struct nfs_server *server = NFS_SERVER(dir); | |
3635 | ||
14c43f76 DQ |
3636 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3637 | if (IS_ERR(data->label)) | |
3638 | goto out_free; | |
3639 | ||
57dc9a57 TM |
3640 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3641 | data->msg.rpc_argp = &data->arg; | |
3642 | data->msg.rpc_resp = &data->res; | |
3643 | data->arg.dir_fh = NFS_FH(dir); | |
3644 | data->arg.server = server; | |
3645 | data->arg.name = name; | |
3646 | data->arg.attrs = sattr; | |
3647 | data->arg.ftype = ftype; | |
aa9c2669 | 3648 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3649 | data->res.server = server; |
3650 | data->res.fh = &data->fh; | |
3651 | data->res.fattr = &data->fattr; | |
1775fd3e | 3652 | data->res.label = data->label; |
57dc9a57 | 3653 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3654 | } |
3655 | return data; | |
14c43f76 DQ |
3656 | out_free: |
3657 | kfree(data); | |
3658 | return NULL; | |
57dc9a57 TM |
3659 | } |
3660 | ||
3661 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3662 | { | |
7c513058 | 3663 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3664 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3665 | if (status == 0) { |
3666 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3667 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3668 | } |
3669 | return status; | |
3670 | } | |
3671 | ||
3672 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3673 | { | |
14c43f76 | 3674 | nfs4_label_free(data->label); |
57dc9a57 TM |
3675 | kfree(data); |
3676 | } | |
3677 | ||
4f390c15 | 3678 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3679 | struct page *page, unsigned int len, struct iattr *sattr, |
3680 | struct nfs4_label *label) | |
1da177e4 | 3681 | { |
57dc9a57 TM |
3682 | struct nfs4_createdata *data; |
3683 | int status = -ENAMETOOLONG; | |
1da177e4 | 3684 | |
94a6d753 | 3685 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3686 | goto out; |
4f390c15 | 3687 | |
57dc9a57 TM |
3688 | status = -ENOMEM; |
3689 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3690 | if (data == NULL) | |
3691 | goto out; | |
3692 | ||
3693 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3694 | data->arg.u.symlink.pages = &page; | |
3695 | data->arg.u.symlink.len = len; | |
1775fd3e | 3696 | data->arg.label = label; |
1da177e4 | 3697 | |
57dc9a57 TM |
3698 | status = nfs4_do_create(dir, dentry, data); |
3699 | ||
3700 | nfs4_free_createdata(data); | |
3701 | out: | |
1da177e4 LT |
3702 | return status; |
3703 | } | |
3704 | ||
4f390c15 | 3705 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3706 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3707 | { |
3708 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3709 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3710 | int err; |
aa9c2669 DQ |
3711 | |
3712 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3713 | ||
1da177e4 | 3714 | do { |
078ea3df TM |
3715 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3716 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3717 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3718 | &exception); |
3719 | } while (exception.retry); | |
aa9c2669 DQ |
3720 | |
3721 | nfs4_label_release_security(label); | |
1da177e4 LT |
3722 | return err; |
3723 | } | |
3724 | ||
3725 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3726 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3727 | { |
57dc9a57 TM |
3728 | struct nfs4_createdata *data; |
3729 | int status = -ENOMEM; | |
1da177e4 | 3730 | |
57dc9a57 TM |
3731 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3732 | if (data == NULL) | |
3733 | goto out; | |
3734 | ||
1775fd3e | 3735 | data->arg.label = label; |
57dc9a57 TM |
3736 | status = nfs4_do_create(dir, dentry, data); |
3737 | ||
3738 | nfs4_free_createdata(data); | |
3739 | out: | |
1da177e4 LT |
3740 | return status; |
3741 | } | |
3742 | ||
3743 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3744 | struct iattr *sattr) | |
3745 | { | |
3746 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3747 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3748 | int err; |
a8a5da99 | 3749 | |
aa9c2669 DQ |
3750 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3751 | ||
a8a5da99 | 3752 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3753 | do { |
078ea3df TM |
3754 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3755 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3756 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3757 | &exception); |
3758 | } while (exception.retry); | |
aa9c2669 DQ |
3759 | nfs4_label_release_security(label); |
3760 | ||
1da177e4 LT |
3761 | return err; |
3762 | } | |
3763 | ||
3764 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3765 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3766 | { |
3767 | struct inode *dir = dentry->d_inode; | |
3768 | struct nfs4_readdir_arg args = { | |
3769 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3770 | .pages = pages, |
1da177e4 LT |
3771 | .pgbase = 0, |
3772 | .count = count, | |
96d25e53 | 3773 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3774 | .plus = plus, |
1da177e4 LT |
3775 | }; |
3776 | struct nfs4_readdir_res res; | |
3777 | struct rpc_message msg = { | |
3778 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3779 | .rpc_argp = &args, | |
3780 | .rpc_resp = &res, | |
3781 | .rpc_cred = cred, | |
3782 | }; | |
3783 | int status; | |
3784 | ||
6de1472f AV |
3785 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
3786 | dentry, | |
eadf4598 | 3787 | (unsigned long long)cookie); |
c3f52af3 | 3788 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3789 | res.pgbase = args.pgbase; |
7c513058 | 3790 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3791 | if (status >= 0) { |
c3f52af3 | 3792 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3793 | status += args.pgbase; |
3794 | } | |
c4812998 TM |
3795 | |
3796 | nfs_invalidate_atime(dir); | |
3797 | ||
3110ff80 | 3798 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3799 | return status; |
3800 | } | |
3801 | ||
3802 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3803 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3804 | { |
3805 | struct nfs4_exception exception = { }; | |
3806 | int err; | |
3807 | do { | |
c1578b76 TM |
3808 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3809 | pages, count, plus); | |
3810 | trace_nfs4_readdir(dentry->d_inode, err); | |
3811 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err, | |
1da177e4 LT |
3812 | &exception); |
3813 | } while (exception.retry); | |
3814 | return err; | |
3815 | } | |
3816 | ||
3817 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3818 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3819 | { |
57dc9a57 TM |
3820 | struct nfs4_createdata *data; |
3821 | int mode = sattr->ia_mode; | |
3822 | int status = -ENOMEM; | |
1da177e4 | 3823 | |
57dc9a57 TM |
3824 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3825 | if (data == NULL) | |
3826 | goto out; | |
3827 | ||
1da177e4 | 3828 | if (S_ISFIFO(mode)) |
57dc9a57 | 3829 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3830 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3831 | data->arg.ftype = NF4BLK; |
3832 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3833 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3834 | } |
3835 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3836 | data->arg.ftype = NF4CHR; |
3837 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3838 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3839 | } else if (!S_ISSOCK(mode)) { |
3840 | status = -EINVAL; | |
3841 | goto out_free; | |
1da177e4 | 3842 | } |
1775fd3e | 3843 | |
aa9c2669 | 3844 | data->arg.label = label; |
57dc9a57 | 3845 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3846 | out_free: |
57dc9a57 TM |
3847 | nfs4_free_createdata(data); |
3848 | out: | |
1da177e4 LT |
3849 | return status; |
3850 | } | |
3851 | ||
3852 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3853 | struct iattr *sattr, dev_t rdev) | |
3854 | { | |
3855 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3856 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3857 | int err; |
a8a5da99 | 3858 | |
aa9c2669 DQ |
3859 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3860 | ||
a8a5da99 | 3861 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3862 | do { |
078ea3df TM |
3863 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3864 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3865 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3866 | &exception); |
3867 | } while (exception.retry); | |
aa9c2669 DQ |
3868 | |
3869 | nfs4_label_release_security(label); | |
3870 | ||
1da177e4 LT |
3871 | return err; |
3872 | } | |
3873 | ||
3874 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3875 | struct nfs_fsstat *fsstat) | |
3876 | { | |
3877 | struct nfs4_statfs_arg args = { | |
3878 | .fh = fhandle, | |
3879 | .bitmask = server->attr_bitmask, | |
3880 | }; | |
24ad148a BH |
3881 | struct nfs4_statfs_res res = { |
3882 | .fsstat = fsstat, | |
3883 | }; | |
1da177e4 LT |
3884 | struct rpc_message msg = { |
3885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3886 | .rpc_argp = &args, | |
24ad148a | 3887 | .rpc_resp = &res, |
1da177e4 LT |
3888 | }; |
3889 | ||
0e574af1 | 3890 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3891 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3892 | } |
3893 | ||
3894 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3895 | { | |
3896 | struct nfs4_exception exception = { }; | |
3897 | int err; | |
3898 | do { | |
3899 | err = nfs4_handle_exception(server, | |
3900 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3901 | &exception); | |
3902 | } while (exception.retry); | |
3903 | return err; | |
3904 | } | |
3905 | ||
3906 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3907 | struct nfs_fsinfo *fsinfo) | |
3908 | { | |
3909 | struct nfs4_fsinfo_arg args = { | |
3910 | .fh = fhandle, | |
3911 | .bitmask = server->attr_bitmask, | |
3912 | }; | |
3dda5e43 BH |
3913 | struct nfs4_fsinfo_res res = { |
3914 | .fsinfo = fsinfo, | |
3915 | }; | |
1da177e4 LT |
3916 | struct rpc_message msg = { |
3917 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3918 | .rpc_argp = &args, | |
3dda5e43 | 3919 | .rpc_resp = &res, |
1da177e4 LT |
3920 | }; |
3921 | ||
7c513058 | 3922 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3923 | } |
3924 | ||
3925 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3926 | { | |
3927 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3928 | unsigned long now = jiffies; |
1da177e4 LT |
3929 | int err; |
3930 | ||
3931 | do { | |
83ca7f5a | 3932 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 3933 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
3934 | if (err == 0) { |
3935 | struct nfs_client *clp = server->nfs_client; | |
3936 | ||
3937 | spin_lock(&clp->cl_lock); | |
3938 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3939 | clp->cl_last_renewal = now; | |
3940 | spin_unlock(&clp->cl_lock); | |
3941 | break; | |
3942 | } | |
3943 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3944 | } while (exception.retry); |
3945 | return err; | |
3946 | } | |
3947 | ||
3948 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3949 | { | |
e38eb650 BS |
3950 | int error; |
3951 | ||
0e574af1 | 3952 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3953 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3954 | if (error == 0) { |
3955 | /* block layout checks this! */ | |
3956 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3957 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3958 | } |
e38eb650 BS |
3959 | |
3960 | return error; | |
1da177e4 LT |
3961 | } |
3962 | ||
3963 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3964 | struct nfs_pathconf *pathconf) | |
3965 | { | |
3966 | struct nfs4_pathconf_arg args = { | |
3967 | .fh = fhandle, | |
3968 | .bitmask = server->attr_bitmask, | |
3969 | }; | |
d45b2989 BH |
3970 | struct nfs4_pathconf_res res = { |
3971 | .pathconf = pathconf, | |
3972 | }; | |
1da177e4 LT |
3973 | struct rpc_message msg = { |
3974 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3975 | .rpc_argp = &args, | |
d45b2989 | 3976 | .rpc_resp = &res, |
1da177e4 LT |
3977 | }; |
3978 | ||
3979 | /* None of the pathconf attributes are mandatory to implement */ | |
3980 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3981 | memset(pathconf, 0, sizeof(*pathconf)); | |
3982 | return 0; | |
3983 | } | |
3984 | ||
0e574af1 | 3985 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3986 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3987 | } |
3988 | ||
3989 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3990 | struct nfs_pathconf *pathconf) | |
3991 | { | |
3992 | struct nfs4_exception exception = { }; | |
3993 | int err; | |
3994 | ||
3995 | do { | |
3996 | err = nfs4_handle_exception(server, | |
3997 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3998 | &exception); | |
3999 | } while (exception.retry); | |
4000 | return err; | |
4001 | } | |
4002 | ||
5521abfd | 4003 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4004 | const struct nfs_open_context *ctx, |
4005 | const struct nfs_lock_context *l_ctx, | |
4006 | fmode_t fmode) | |
4007 | { | |
4008 | const struct nfs_lockowner *lockowner = NULL; | |
4009 | ||
4010 | if (l_ctx != NULL) | |
4011 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4012 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4013 | } |
4014 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4015 | ||
5521abfd TM |
4016 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4017 | const struct nfs_open_context *ctx, | |
4018 | const struct nfs_lock_context *l_ctx, | |
4019 | fmode_t fmode) | |
4020 | { | |
4021 | nfs4_stateid current_stateid; | |
4022 | ||
e1253be0 TM |
4023 | /* If the current stateid represents a lost lock, then exit */ |
4024 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4025 | return true; | |
5521abfd TM |
4026 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4027 | } | |
4028 | ||
4029 | static bool nfs4_error_stateid_expired(int err) | |
4030 | { | |
4031 | switch (err) { | |
4032 | case -NFS4ERR_DELEG_REVOKED: | |
4033 | case -NFS4ERR_ADMIN_REVOKED: | |
4034 | case -NFS4ERR_BAD_STATEID: | |
4035 | case -NFS4ERR_STALE_STATEID: | |
4036 | case -NFS4ERR_OLD_STATEID: | |
4037 | case -NFS4ERR_OPENMODE: | |
4038 | case -NFS4ERR_EXPIRED: | |
4039 | return true; | |
4040 | } | |
4041 | return false; | |
4042 | } | |
4043 | ||
d45f60c6 | 4044 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4045 | { |
d45f60c6 | 4046 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4047 | } |
4048 | ||
d45f60c6 | 4049 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4050 | { |
d45f60c6 | 4051 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4052 | |
d45f60c6 WAA |
4053 | trace_nfs4_read(hdr, task->tk_status); |
4054 | if (nfs4_async_handle_error(task, server, | |
4055 | hdr->args.context->state) == -EAGAIN) { | |
d00c5d43 | 4056 | rpc_restart_call_prepare(task); |
ec06c096 | 4057 | return -EAGAIN; |
1da177e4 | 4058 | } |
8850df99 | 4059 | |
d45f60c6 | 4060 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4061 | if (task->tk_status > 0) |
d45f60c6 | 4062 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4063 | return 0; |
1da177e4 LT |
4064 | } |
4065 | ||
5521abfd | 4066 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4067 | struct nfs_pgio_args *args) |
5521abfd TM |
4068 | { |
4069 | ||
4070 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4071 | nfs4_stateid_is_current(&args->stateid, | |
4072 | args->context, | |
4073 | args->lock_context, | |
4074 | FMODE_READ)) | |
4075 | return false; | |
4076 | rpc_restart_call_prepare(task); | |
4077 | return true; | |
4078 | } | |
4079 | ||
d45f60c6 | 4080 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4081 | { |
4082 | ||
4083 | dprintk("--> %s\n", __func__); | |
4084 | ||
d45f60c6 | 4085 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4086 | return -EAGAIN; |
d45f60c6 | 4087 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4088 | return -EAGAIN; |
d45f60c6 WAA |
4089 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4090 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4091 | } |
4092 | ||
d45f60c6 WAA |
4093 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4094 | struct rpc_message *msg) | |
1da177e4 | 4095 | { |
d45f60c6 WAA |
4096 | hdr->timestamp = jiffies; |
4097 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4098 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4099 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4100 | } |
4101 | ||
d45f60c6 WAA |
4102 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4103 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4104 | { |
d45f60c6 WAA |
4105 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4106 | &hdr->args.seq_args, | |
4107 | &hdr->res.seq_res, | |
9b206149 | 4108 | task)) |
ef1820f9 | 4109 | return 0; |
d45f60c6 WAA |
4110 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4111 | hdr->args.lock_context, | |
4112 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4113 | return -EIO; |
d45f60c6 | 4114 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4115 | return -EIO; |
4116 | return 0; | |
1da177e4 LT |
4117 | } |
4118 | ||
d45f60c6 WAA |
4119 | static int nfs4_write_done_cb(struct rpc_task *task, |
4120 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4121 | { |
d45f60c6 | 4122 | struct inode *inode = hdr->inode; |
1da177e4 | 4123 | |
d45f60c6 WAA |
4124 | trace_nfs4_write(hdr, task->tk_status); |
4125 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
4126 | hdr->args.context->state) == -EAGAIN) { | |
d00c5d43 | 4127 | rpc_restart_call_prepare(task); |
788e7a89 | 4128 | return -EAGAIN; |
1da177e4 | 4129 | } |
4f9838c7 | 4130 | if (task->tk_status >= 0) { |
d45f60c6 WAA |
4131 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
4132 | nfs_post_op_update_inode_force_wcc(inode, &hdr->fattr); | |
4f9838c7 | 4133 | } |
788e7a89 | 4134 | return 0; |
1da177e4 LT |
4135 | } |
4136 | ||
5521abfd | 4137 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4138 | struct nfs_pgio_args *args) |
5521abfd TM |
4139 | { |
4140 | ||
4141 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4142 | nfs4_stateid_is_current(&args->stateid, | |
4143 | args->context, | |
4144 | args->lock_context, | |
4145 | FMODE_WRITE)) | |
4146 | return false; | |
4147 | rpc_restart_call_prepare(task); | |
4148 | return true; | |
4149 | } | |
4150 | ||
d45f60c6 | 4151 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4152 | { |
d45f60c6 | 4153 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4154 | return -EAGAIN; |
d45f60c6 | 4155 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4156 | return -EAGAIN; |
d45f60c6 WAA |
4157 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4158 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4159 | } |
4160 | ||
5a37f851 | 4161 | static |
d45f60c6 | 4162 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4163 | { |
5a37f851 | 4164 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4165 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4166 | return false; |
4167 | /* Otherwise, request attributes if and only if we don't hold | |
4168 | * a delegation | |
4169 | */ | |
011e2a7f | 4170 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4171 | } |
a69aef14 | 4172 | |
d45f60c6 WAA |
4173 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4174 | struct rpc_message *msg) | |
1da177e4 | 4175 | { |
d45f60c6 | 4176 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4177 | |
d45f60c6 WAA |
4178 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4179 | hdr->args.bitmask = NULL; | |
4180 | hdr->res.fattr = NULL; | |
7ffd1064 | 4181 | } else |
d45f60c6 | 4182 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4183 | |
d45f60c6 WAA |
4184 | if (!hdr->pgio_done_cb) |
4185 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4186 | hdr->res.server = server; | |
4187 | hdr->timestamp = jiffies; | |
1da177e4 | 4188 | |
bdc7f021 | 4189 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4190 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4191 | } |
4192 | ||
0b7c0153 | 4193 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4194 | { |
d9afbd1b TM |
4195 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4196 | &data->args.seq_args, | |
4197 | &data->res.seq_res, | |
4198 | task); | |
1da177e4 LT |
4199 | } |
4200 | ||
0b7c0153 | 4201 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4202 | { |
1da177e4 | 4203 | struct inode *inode = data->inode; |
14516c3a | 4204 | |
cc668ab3 | 4205 | trace_nfs4_commit(data, task->tk_status); |
9e33bed5 | 4206 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 4207 | rpc_restart_call_prepare(task); |
788e7a89 | 4208 | return -EAGAIN; |
1da177e4 | 4209 | } |
788e7a89 | 4210 | return 0; |
1da177e4 LT |
4211 | } |
4212 | ||
0b7c0153 | 4213 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4214 | { |
4215 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4216 | return -EAGAIN; | |
0b7c0153 | 4217 | return data->commit_done_cb(task, data); |
5f452431 FI |
4218 | } |
4219 | ||
0b7c0153 | 4220 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4221 | { |
788e7a89 | 4222 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4223 | |
0b7c0153 FI |
4224 | if (data->commit_done_cb == NULL) |
4225 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4226 | data->res.server = server; |
bdc7f021 | 4227 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4228 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4229 | } |
4230 | ||
9bc4e3ca CL |
4231 | struct nfs4_renewdata { |
4232 | struct nfs_client *client; | |
4233 | unsigned long timestamp; | |
4234 | }; | |
4235 | ||
1da177e4 LT |
4236 | /* |
4237 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4238 | * standalone procedure for queueing an asynchronous RENEW. | |
4239 | */ | |
9bc4e3ca | 4240 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4241 | { |
9bc4e3ca CL |
4242 | struct nfs4_renewdata *data = calldata; |
4243 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4244 | |
0851de06 AB |
4245 | if (atomic_read(&clp->cl_count) > 1) |
4246 | nfs4_schedule_state_renewal(clp); | |
4247 | nfs_put_client(clp); | |
9bc4e3ca | 4248 | kfree(data); |
dc96aef9 AB |
4249 | } |
4250 | ||
9bc4e3ca | 4251 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4252 | { |
9bc4e3ca CL |
4253 | struct nfs4_renewdata *data = calldata; |
4254 | struct nfs_client *clp = data->client; | |
4255 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4256 | |
c6d01c6f | 4257 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4258 | switch (task->tk_status) { |
4259 | case 0: | |
4260 | break; | |
4261 | case -NFS4ERR_LEASE_MOVED: | |
4262 | nfs4_schedule_lease_moved_recovery(clp); | |
4263 | break; | |
4264 | default: | |
95baa25c | 4265 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4266 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4267 | return; | |
4268 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4269 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4270 | return; |
4271 | } | |
4272 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4273 | } |
452e9352 | 4274 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4275 | } |
4276 | ||
963d8fe5 TM |
4277 | static const struct rpc_call_ops nfs4_renew_ops = { |
4278 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4279 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4280 | }; |
4281 | ||
2f60ea6b | 4282 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4283 | { |
4284 | struct rpc_message msg = { | |
4285 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4286 | .rpc_argp = clp, | |
b4454fe1 | 4287 | .rpc_cred = cred, |
1da177e4 | 4288 | }; |
9bc4e3ca | 4289 | struct nfs4_renewdata *data; |
1da177e4 | 4290 | |
2f60ea6b TM |
4291 | if (renew_flags == 0) |
4292 | return 0; | |
0851de06 AB |
4293 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4294 | return -EIO; | |
b569ad34 | 4295 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4296 | if (data == NULL) |
4297 | return -ENOMEM; | |
4298 | data->client = clp; | |
4299 | data->timestamp = jiffies; | |
bc7a05ca | 4300 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4301 | &nfs4_renew_ops, data); |
1da177e4 LT |
4302 | } |
4303 | ||
8534d4ec | 4304 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4305 | { |
4306 | struct rpc_message msg = { | |
4307 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4308 | .rpc_argp = clp, | |
b4454fe1 | 4309 | .rpc_cred = cred, |
1da177e4 LT |
4310 | }; |
4311 | unsigned long now = jiffies; | |
4312 | int status; | |
4313 | ||
bc7a05ca | 4314 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4315 | if (status < 0) |
4316 | return status; | |
452e9352 | 4317 | do_renew_lease(clp, now); |
1da177e4 LT |
4318 | return 0; |
4319 | } | |
4320 | ||
aa1870af BF |
4321 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4322 | { | |
7dd7d959 | 4323 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4324 | } |
4325 | ||
21f498c2 TM |
4326 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4327 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4328 | * the stack. |
4329 | */ | |
21f498c2 | 4330 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4331 | |
e9e3d724 NH |
4332 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4333 | struct page **pages, unsigned int *pgbase) | |
4334 | { | |
4335 | struct page *newpage, **spages; | |
4336 | int rc = 0; | |
4337 | size_t len; | |
4338 | spages = pages; | |
4339 | ||
4340 | do { | |
21f498c2 | 4341 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4342 | newpage = alloc_page(GFP_KERNEL); |
4343 | ||
4344 | if (newpage == NULL) | |
4345 | goto unwind; | |
4346 | memcpy(page_address(newpage), buf, len); | |
4347 | buf += len; | |
4348 | buflen -= len; | |
4349 | *pages++ = newpage; | |
4350 | rc++; | |
4351 | } while (buflen != 0); | |
4352 | ||
4353 | return rc; | |
4354 | ||
4355 | unwind: | |
4356 | for(; rc > 0; rc--) | |
4357 | __free_page(spages[rc-1]); | |
4358 | return -ENOMEM; | |
4359 | } | |
4360 | ||
e50a1c2e BF |
4361 | struct nfs4_cached_acl { |
4362 | int cached; | |
4363 | size_t len; | |
3e9d4154 | 4364 | char data[0]; |
e50a1c2e BF |
4365 | }; |
4366 | ||
4367 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4368 | { | |
4369 | struct nfs_inode *nfsi = NFS_I(inode); | |
4370 | ||
4371 | spin_lock(&inode->i_lock); | |
4372 | kfree(nfsi->nfs4_acl); | |
4373 | nfsi->nfs4_acl = acl; | |
4374 | spin_unlock(&inode->i_lock); | |
4375 | } | |
4376 | ||
4377 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4378 | { | |
4379 | nfs4_set_cached_acl(inode, NULL); | |
4380 | } | |
4381 | ||
4382 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4383 | { | |
4384 | struct nfs_inode *nfsi = NFS_I(inode); | |
4385 | struct nfs4_cached_acl *acl; | |
4386 | int ret = -ENOENT; | |
4387 | ||
4388 | spin_lock(&inode->i_lock); | |
4389 | acl = nfsi->nfs4_acl; | |
4390 | if (acl == NULL) | |
4391 | goto out; | |
4392 | if (buf == NULL) /* user is just asking for length */ | |
4393 | goto out_len; | |
4394 | if (acl->cached == 0) | |
4395 | goto out; | |
4396 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4397 | if (acl->len > buflen) | |
4398 | goto out; | |
4399 | memcpy(buf, acl->data, acl->len); | |
4400 | out_len: | |
4401 | ret = acl->len; | |
4402 | out: | |
4403 | spin_unlock(&inode->i_lock); | |
4404 | return ret; | |
4405 | } | |
4406 | ||
5794d21e | 4407 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4408 | { |
4409 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4410 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4411 | |
1f1ea6c2 | 4412 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4413 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4414 | if (acl == NULL) |
4415 | goto out; | |
4416 | acl->cached = 1; | |
5794d21e | 4417 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4418 | } else { |
4419 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4420 | if (acl == NULL) | |
4421 | goto out; | |
4422 | acl->cached = 0; | |
4423 | } | |
4424 | acl->len = acl_len; | |
4425 | out: | |
4426 | nfs4_set_cached_acl(inode, acl); | |
4427 | } | |
4428 | ||
bf118a34 AA |
4429 | /* |
4430 | * The getxattr API returns the required buffer length when called with a | |
4431 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4432 | * the required buf. On a NULL buf, we send a page of data to the server | |
4433 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4434 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4435 | * the cache. If not so, we throw away the page, and cache the required | |
4436 | * length. The next getxattr call will then produce another round trip to | |
4437 | * the server, this time with the input buf of the required size. | |
4438 | */ | |
16b4289c | 4439 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4440 | { |
bf118a34 | 4441 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4442 | struct nfs_getaclargs args = { |
4443 | .fh = NFS_FH(inode), | |
4444 | .acl_pages = pages, | |
4445 | .acl_len = buflen, | |
4446 | }; | |
663c79b3 BH |
4447 | struct nfs_getaclres res = { |
4448 | .acl_len = buflen, | |
4449 | }; | |
aa1870af BF |
4450 | struct rpc_message msg = { |
4451 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4452 | .rpc_argp = &args, | |
663c79b3 | 4453 | .rpc_resp = &res, |
aa1870af | 4454 | }; |
21f498c2 TM |
4455 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4456 | int ret = -ENOMEM, i; | |
aa1870af | 4457 | |
bf118a34 AA |
4458 | /* As long as we're doing a round trip to the server anyway, |
4459 | * let's be prepared for a page of acl data. */ | |
4460 | if (npages == 0) | |
4461 | npages = 1; | |
21f498c2 TM |
4462 | if (npages > ARRAY_SIZE(pages)) |
4463 | return -ERANGE; | |
5a006899 | 4464 | |
bf118a34 AA |
4465 | for (i = 0; i < npages; i++) { |
4466 | pages[i] = alloc_page(GFP_KERNEL); | |
4467 | if (!pages[i]) | |
4468 | goto out_free; | |
e50a1c2e | 4469 | } |
5a006899 SP |
4470 | |
4471 | /* for decoding across pages */ | |
4472 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4473 | if (!res.acl_scratch) | |
4474 | goto out_free; | |
4475 | ||
bf118a34 AA |
4476 | args.acl_len = npages * PAGE_SIZE; |
4477 | args.acl_pgbase = 0; | |
5a006899 | 4478 | |
de040bec | 4479 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4480 | __func__, buf, buflen, npages, args.acl_len); |
4481 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4482 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4483 | if (ret) |
4484 | goto out_free; | |
bf118a34 | 4485 | |
1f1ea6c2 TM |
4486 | /* Handle the case where the passed-in buffer is too short */ |
4487 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4488 | /* Did the user only issue a request for the acl length? */ | |
4489 | if (buf == NULL) | |
4490 | goto out_ok; | |
e50a1c2e | 4491 | ret = -ERANGE; |
1f1ea6c2 | 4492 | goto out_free; |
e50a1c2e | 4493 | } |
1f1ea6c2 | 4494 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4495 | if (buf) { |
4496 | if (res.acl_len > buflen) { | |
4497 | ret = -ERANGE; | |
4498 | goto out_free; | |
4499 | } | |
1f1ea6c2 | 4500 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4501 | } |
1f1ea6c2 TM |
4502 | out_ok: |
4503 | ret = res.acl_len; | |
e50a1c2e | 4504 | out_free: |
bf118a34 AA |
4505 | for (i = 0; i < npages; i++) |
4506 | if (pages[i]) | |
4507 | __free_page(pages[i]); | |
331818f1 TM |
4508 | if (res.acl_scratch) |
4509 | __free_page(res.acl_scratch); | |
aa1870af BF |
4510 | return ret; |
4511 | } | |
4512 | ||
16b4289c TM |
4513 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4514 | { | |
4515 | struct nfs4_exception exception = { }; | |
4516 | ssize_t ret; | |
4517 | do { | |
4518 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4519 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4520 | if (ret >= 0) |
4521 | break; | |
4522 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4523 | } while (exception.retry); | |
4524 | return ret; | |
4525 | } | |
4526 | ||
e50a1c2e BF |
4527 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4528 | { | |
4529 | struct nfs_server *server = NFS_SERVER(inode); | |
4530 | int ret; | |
4531 | ||
4532 | if (!nfs4_server_supports_acls(server)) | |
4533 | return -EOPNOTSUPP; | |
4534 | ret = nfs_revalidate_inode(server, inode); | |
4535 | if (ret < 0) | |
4536 | return ret; | |
08a22b39 AK |
4537 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4538 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4539 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4540 | if (ret != -ENOENT) | |
bf118a34 AA |
4541 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4542 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4543 | return ret; |
4544 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4545 | } | |
4546 | ||
16b4289c | 4547 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4548 | { |
4549 | struct nfs_server *server = NFS_SERVER(inode); | |
4550 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4551 | struct nfs_setaclargs arg = { | |
4552 | .fh = NFS_FH(inode), | |
4553 | .acl_pages = pages, | |
4554 | .acl_len = buflen, | |
4555 | }; | |
73c403a9 | 4556 | struct nfs_setaclres res; |
4b580ee3 BF |
4557 | struct rpc_message msg = { |
4558 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4559 | .rpc_argp = &arg, | |
73c403a9 | 4560 | .rpc_resp = &res, |
4b580ee3 | 4561 | }; |
21f498c2 | 4562 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4563 | int ret, i; |
4b580ee3 BF |
4564 | |
4565 | if (!nfs4_server_supports_acls(server)) | |
4566 | return -EOPNOTSUPP; | |
21f498c2 TM |
4567 | if (npages > ARRAY_SIZE(pages)) |
4568 | return -ERANGE; | |
e9e3d724 NH |
4569 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4570 | if (i < 0) | |
4571 | return i; | |
57ec14c5 | 4572 | nfs4_inode_return_delegation(inode); |
7c513058 | 4573 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4574 | |
4575 | /* | |
4576 | * Free each page after tx, so the only ref left is | |
4577 | * held by the network stack | |
4578 | */ | |
4579 | for (; i > 0; i--) | |
4580 | put_page(pages[i-1]); | |
4581 | ||
08a22b39 AK |
4582 | /* |
4583 | * Acl update can result in inode attribute update. | |
4584 | * so mark the attribute cache invalid. | |
4585 | */ | |
4586 | spin_lock(&inode->i_lock); | |
4587 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4588 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4589 | nfs_access_zap_cache(inode); |
4590 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4591 | return ret; |
4592 | } | |
4593 | ||
16b4289c TM |
4594 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4595 | { | |
4596 | struct nfs4_exception exception = { }; | |
4597 | int err; | |
4598 | do { | |
c1578b76 TM |
4599 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4600 | trace_nfs4_set_acl(inode, err); | |
4601 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4602 | &exception); |
4603 | } while (exception.retry); | |
4604 | return err; | |
4605 | } | |
4606 | ||
aa9c2669 DQ |
4607 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4608 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4609 | size_t buflen) | |
4610 | { | |
4611 | struct nfs_server *server = NFS_SERVER(inode); | |
4612 | struct nfs_fattr fattr; | |
4613 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4614 | ||
4615 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4616 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4617 | .fh = NFS_FH(inode), |
4618 | .bitmask = bitmask, | |
4619 | }; | |
4620 | struct nfs4_getattr_res res = { | |
4621 | .fattr = &fattr, | |
4622 | .label = &label, | |
4623 | .server = server, | |
4624 | }; | |
4625 | struct rpc_message msg = { | |
4626 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4627 | .rpc_argp = &arg, |
aa9c2669 DQ |
4628 | .rpc_resp = &res, |
4629 | }; | |
4630 | int ret; | |
4631 | ||
4632 | nfs_fattr_init(&fattr); | |
4633 | ||
fcb63a9b | 4634 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4635 | if (ret) |
4636 | return ret; | |
4637 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4638 | return -ENOENT; | |
4639 | if (buflen < label.len) | |
4640 | return -ERANGE; | |
4641 | return 0; | |
4642 | } | |
4643 | ||
4644 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4645 | size_t buflen) | |
4646 | { | |
4647 | struct nfs4_exception exception = { }; | |
4648 | int err; | |
4649 | ||
4650 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4651 | return -EOPNOTSUPP; | |
4652 | ||
4653 | do { | |
c1578b76 TM |
4654 | err = _nfs4_get_security_label(inode, buf, buflen); |
4655 | trace_nfs4_get_security_label(inode, err); | |
4656 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4657 | &exception); |
4658 | } while (exception.retry); | |
4659 | return err; | |
4660 | } | |
4661 | ||
4662 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4663 | struct nfs4_label *ilabel, | |
4664 | struct nfs_fattr *fattr, | |
4665 | struct nfs4_label *olabel) | |
4666 | { | |
4667 | ||
4668 | struct iattr sattr = {0}; | |
4669 | struct nfs_server *server = NFS_SERVER(inode); | |
4670 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4671 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4672 | .fh = NFS_FH(inode), |
4673 | .iap = &sattr, | |
4674 | .server = server, | |
4675 | .bitmask = bitmask, | |
4676 | .label = ilabel, | |
4677 | }; | |
4678 | struct nfs_setattrres res = { | |
4679 | .fattr = fattr, | |
4680 | .label = olabel, | |
4681 | .server = server, | |
4682 | }; | |
4683 | struct rpc_message msg = { | |
4684 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4685 | .rpc_argp = &arg, |
aa9c2669 DQ |
4686 | .rpc_resp = &res, |
4687 | }; | |
4688 | int status; | |
4689 | ||
12207f69 | 4690 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4691 | |
12207f69 | 4692 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4693 | if (status) |
4694 | dprintk("%s failed: %d\n", __func__, status); | |
4695 | ||
4696 | return status; | |
4697 | } | |
4698 | ||
4699 | static int nfs4_do_set_security_label(struct inode *inode, | |
4700 | struct nfs4_label *ilabel, | |
4701 | struct nfs_fattr *fattr, | |
4702 | struct nfs4_label *olabel) | |
4703 | { | |
4704 | struct nfs4_exception exception = { }; | |
4705 | int err; | |
4706 | ||
4707 | do { | |
c1578b76 TM |
4708 | err = _nfs4_do_set_security_label(inode, ilabel, |
4709 | fattr, olabel); | |
4710 | trace_nfs4_set_security_label(inode, err); | |
4711 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4712 | &exception); |
4713 | } while (exception.retry); | |
4714 | return err; | |
4715 | } | |
4716 | ||
4717 | static int | |
4718 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4719 | { | |
4720 | struct nfs4_label ilabel, *olabel = NULL; | |
4721 | struct nfs_fattr fattr; | |
4722 | struct rpc_cred *cred; | |
4723 | struct inode *inode = dentry->d_inode; | |
4724 | int status; | |
4725 | ||
4726 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4727 | return -EOPNOTSUPP; | |
4728 | ||
4729 | nfs_fattr_init(&fattr); | |
4730 | ||
4731 | ilabel.pi = 0; | |
4732 | ilabel.lfs = 0; | |
4733 | ilabel.label = (char *)buf; | |
4734 | ilabel.len = buflen; | |
4735 | ||
4736 | cred = rpc_lookup_cred(); | |
4737 | if (IS_ERR(cred)) | |
4738 | return PTR_ERR(cred); | |
4739 | ||
4740 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4741 | if (IS_ERR(olabel)) { | |
4742 | status = -PTR_ERR(olabel); | |
4743 | goto out; | |
4744 | } | |
4745 | ||
4746 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4747 | if (status == 0) | |
4748 | nfs_setsecurity(inode, &fattr, olabel); | |
4749 | ||
4750 | nfs4_label_free(olabel); | |
4751 | out: | |
4752 | put_rpccred(cred); | |
4753 | return status; | |
4754 | } | |
4755 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4756 | ||
4757 | ||
1da177e4 | 4758 | static int |
aa5190d0 | 4759 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4760 | { |
aa5190d0 TM |
4761 | struct nfs_client *clp = server->nfs_client; |
4762 | ||
4763 | if (task->tk_status >= 0) | |
1da177e4 LT |
4764 | return 0; |
4765 | switch(task->tk_status) { | |
a1d0b5ee | 4766 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4767 | case -NFS4ERR_ADMIN_REVOKED: |
4768 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4769 | if (state == NULL) |
4770 | break; | |
4771 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4772 | case -NFS4ERR_OPENMODE: |
4773 | if (state == NULL) | |
4774 | break; | |
5d422301 | 4775 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4776 | goto recovery_failed; |
0400a6b0 | 4777 | goto wait_on_recovery; |
0ced63d1 | 4778 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4779 | if (state != NULL) { |
4780 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 4781 | goto recovery_failed; |
5d422301 | 4782 | } |
1da177e4 | 4783 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4784 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4785 | nfs4_schedule_lease_recovery(clp); |
4786 | goto wait_on_recovery; | |
519ae255 CL |
4787 | case -NFS4ERR_MOVED: |
4788 | if (nfs4_schedule_migration_recovery(server) < 0) | |
4789 | goto recovery_failed; | |
4790 | goto wait_on_recovery; | |
8ef2f8d4 CL |
4791 | case -NFS4ERR_LEASE_MOVED: |
4792 | nfs4_schedule_lease_moved_recovery(clp); | |
4793 | goto wait_on_recovery; | |
4745e315 AA |
4794 | #if defined(CONFIG_NFS_V4_1) |
4795 | case -NFS4ERR_BADSESSION: | |
4796 | case -NFS4ERR_BADSLOT: | |
4797 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4798 | case -NFS4ERR_DEADSESSION: | |
4799 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4800 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4801 | case -NFS4ERR_SEQ_MISORDERED: | |
4802 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4803 | task->tk_status); | |
9f594791 | 4804 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 4805 | goto wait_on_recovery; |
4745e315 | 4806 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4807 | case -NFS4ERR_DELAY: |
aa5190d0 | 4808 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4809 | case -NFS4ERR_GRACE: |
1da177e4 | 4810 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 4811 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 4812 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 4813 | goto restart_call; |
1da177e4 LT |
4814 | } |
4815 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4816 | return 0; | |
9f51a78e | 4817 | recovery_failed: |
5d422301 TM |
4818 | task->tk_status = -EIO; |
4819 | return 0; | |
0400a6b0 | 4820 | wait_on_recovery: |
a2c0b9e2 | 4821 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4822 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4823 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
4824 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
4825 | goto recovery_failed; | |
f1478c13 | 4826 | restart_call: |
a2c0b9e2 TM |
4827 | task->tk_status = 0; |
4828 | return -EAGAIN; | |
1da177e4 LT |
4829 | } |
4830 | ||
f092075d CL |
4831 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4832 | nfs4_verifier *bootverf) | |
cd93710e CL |
4833 | { |
4834 | __be32 verf[2]; | |
4835 | ||
2c820d9a CL |
4836 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4837 | /* An impossible timestamp guarantees this value | |
4838 | * will never match a generated boot time. */ | |
4839 | verf[0] = 0; | |
17f26b12 | 4840 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4841 | } else { |
f092075d | 4842 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4843 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4844 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4845 | } |
cd93710e CL |
4846 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4847 | } | |
4848 | ||
e984a55a CL |
4849 | static unsigned int |
4850 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4851 | char *buf, size_t len) | |
4852 | { | |
4853 | unsigned int result; | |
4854 | ||
4855 | rcu_read_lock(); | |
4856 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4857 | clp->cl_ipaddr, | |
4858 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4859 | RPC_DISPLAY_ADDR), | |
4860 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4861 | RPC_DISPLAY_PROTO)); | |
4862 | rcu_read_unlock(); | |
4863 | return result; | |
4864 | } | |
4865 | ||
4866 | static unsigned int | |
4867 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4868 | char *buf, size_t len) | |
4869 | { | |
55b59293 | 4870 | const char *nodename = clp->cl_rpcclient->cl_nodename; |
6f2ea7f2 CL |
4871 | |
4872 | if (nfs4_client_id_uniquifier[0] != '\0') | |
55b59293 TM |
4873 | return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", |
4874 | clp->rpc_ops->version, | |
4875 | clp->cl_minorversion, | |
4876 | nfs4_client_id_uniquifier, | |
4877 | nodename); | |
e984a55a CL |
4878 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4879 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4880 | nodename); |
e984a55a CL |
4881 | } |
4882 | ||
706cb8db CL |
4883 | /* |
4884 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
4885 | * services. Advertise one based on the address family of the | |
4886 | * clientaddr. | |
4887 | */ | |
4888 | static unsigned int | |
4889 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
4890 | { | |
4891 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
4892 | return scnprintf(buf, len, "tcp6"); | |
4893 | else | |
4894 | return scnprintf(buf, len, "tcp"); | |
4895 | } | |
4896 | ||
6bbb4ae8 CL |
4897 | /** |
4898 | * nfs4_proc_setclientid - Negotiate client ID | |
4899 | * @clp: state data structure | |
4900 | * @program: RPC program for NFSv4 callback service | |
4901 | * @port: IP port number for NFS4 callback service | |
4902 | * @cred: RPC credential to use for this call | |
4903 | * @res: where to place the result | |
4904 | * | |
4905 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4906 | */ | |
bb8b27e5 TM |
4907 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4908 | unsigned short port, struct rpc_cred *cred, | |
4909 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4910 | { |
4911 | nfs4_verifier sc_verifier; | |
4912 | struct nfs4_setclientid setclientid = { | |
4913 | .sc_verifier = &sc_verifier, | |
4914 | .sc_prog = program, | |
f4eecd5d | 4915 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4916 | }; |
4917 | struct rpc_message msg = { | |
4918 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4919 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4920 | .rpc_resp = res, |
286d7d6a | 4921 | .rpc_cred = cred, |
1da177e4 | 4922 | }; |
6bbb4ae8 | 4923 | int status; |
1da177e4 | 4924 | |
de734831 | 4925 | /* nfs_client_id4 */ |
f092075d | 4926 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4927 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4928 | setclientid.sc_name_len = | |
4929 | nfs4_init_uniform_client_string(clp, | |
4930 | setclientid.sc_name, | |
4931 | sizeof(setclientid.sc_name)); | |
4932 | else | |
4933 | setclientid.sc_name_len = | |
4934 | nfs4_init_nonuniform_client_string(clp, | |
4935 | setclientid.sc_name, | |
4936 | sizeof(setclientid.sc_name)); | |
de734831 | 4937 | /* cb_client4 */ |
706cb8db CL |
4938 | setclientid.sc_netid_len = |
4939 | nfs4_init_callback_netid(clp, | |
4940 | setclientid.sc_netid, | |
4941 | sizeof(setclientid.sc_netid)); | |
de734831 | 4942 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 4943 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4944 | clp->cl_ipaddr, port >> 8, port & 255); |
4945 | ||
6bbb4ae8 CL |
4946 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4947 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4948 | setclientid.sc_name_len, setclientid.sc_name); | |
4949 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 4950 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
4951 | dprintk("NFS reply setclientid: %d\n", status); |
4952 | return status; | |
1da177e4 LT |
4953 | } |
4954 | ||
6bbb4ae8 CL |
4955 | /** |
4956 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4957 | * @clp: state data structure | |
4958 | * @res: result of a previous SETCLIENTID | |
4959 | * @cred: RPC credential to use for this call | |
4960 | * | |
4961 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4962 | */ | |
fd954ae1 | 4963 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4964 | struct nfs4_setclientid_res *arg, |
4965 | struct rpc_cred *cred) | |
1da177e4 | 4966 | { |
1da177e4 LT |
4967 | struct rpc_message msg = { |
4968 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4969 | .rpc_argp = arg, |
286d7d6a | 4970 | .rpc_cred = cred, |
1da177e4 | 4971 | }; |
1da177e4 LT |
4972 | int status; |
4973 | ||
6bbb4ae8 CL |
4974 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4975 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4976 | clp->cl_clientid); | |
1bd714f2 | 4977 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 4978 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 4979 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4980 | return status; |
4981 | } | |
4982 | ||
fe650407 TM |
4983 | struct nfs4_delegreturndata { |
4984 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4985 | struct nfs4_delegreturnres res; |
fe650407 TM |
4986 | struct nfs_fh fh; |
4987 | nfs4_stateid stateid; | |
26e976a8 | 4988 | unsigned long timestamp; |
fa178f29 | 4989 | struct nfs_fattr fattr; |
fe650407 TM |
4990 | int rpc_status; |
4991 | }; | |
4992 | ||
fe650407 TM |
4993 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4994 | { | |
4995 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4996 | |
14516c3a TM |
4997 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4998 | return; | |
938e1010 | 4999 | |
ca8acf8d | 5000 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5001 | switch (task->tk_status) { |
79708861 | 5002 | case 0: |
fa178f29 | 5003 | renew_lease(data->res.server, data->timestamp); |
79708861 | 5004 | break; |
c97cf606 TM |
5005 | case -NFS4ERR_ADMIN_REVOKED: |
5006 | case -NFS4ERR_DELEG_REVOKED: | |
5007 | case -NFS4ERR_BAD_STATEID: | |
5008 | case -NFS4ERR_OLD_STATEID: | |
5009 | case -NFS4ERR_STALE_STATEID: | |
5010 | case -NFS4ERR_EXPIRED: | |
5011 | task->tk_status = 0; | |
5012 | break; | |
79708861 RL |
5013 | default: |
5014 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
5015 | -EAGAIN) { | |
d00c5d43 | 5016 | rpc_restart_call_prepare(task); |
79708861 RL |
5017 | return; |
5018 | } | |
5019 | } | |
5020 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5021 | } |
5022 | ||
5023 | static void nfs4_delegreturn_release(void *calldata) | |
5024 | { | |
fe650407 TM |
5025 | kfree(calldata); |
5026 | } | |
5027 | ||
938e1010 AA |
5028 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5029 | { | |
5030 | struct nfs4_delegreturndata *d_data; | |
5031 | ||
5032 | d_data = (struct nfs4_delegreturndata *)data; | |
5033 | ||
d9afbd1b TM |
5034 | nfs4_setup_sequence(d_data->res.server, |
5035 | &d_data->args.seq_args, | |
5036 | &d_data->res.seq_res, | |
5037 | task); | |
938e1010 | 5038 | } |
938e1010 | 5039 | |
c8d149f3 | 5040 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5041 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5042 | .rpc_call_done = nfs4_delegreturn_done, |
5043 | .rpc_release = nfs4_delegreturn_release, | |
5044 | }; | |
5045 | ||
e6f81075 | 5046 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5047 | { |
5048 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5049 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5050 | struct rpc_task *task; |
5138fde0 TM |
5051 | struct rpc_message msg = { |
5052 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5053 | .rpc_cred = cred, | |
5054 | }; | |
c970aa85 TM |
5055 | struct rpc_task_setup task_setup_data = { |
5056 | .rpc_client = server->client, | |
5138fde0 | 5057 | .rpc_message = &msg, |
c970aa85 TM |
5058 | .callback_ops = &nfs4_delegreturn_ops, |
5059 | .flags = RPC_TASK_ASYNC, | |
5060 | }; | |
e6f81075 | 5061 | int status = 0; |
fe650407 | 5062 | |
8535b2be | 5063 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5064 | if (data == NULL) |
5065 | return -ENOMEM; | |
a9c92d6b | 5066 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5067 | data->args.fhandle = &data->fh; |
5068 | data->args.stateid = &data->stateid; | |
9e907fec | 5069 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5070 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5071 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5072 | data->res.fattr = &data->fattr; |
5073 | data->res.server = server; | |
5138fde0 | 5074 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5075 | data->timestamp = jiffies; |
fe650407 TM |
5076 | data->rpc_status = 0; |
5077 | ||
c970aa85 | 5078 | task_setup_data.callback_data = data; |
1174dd1f TM |
5079 | msg.rpc_argp = &data->args; |
5080 | msg.rpc_resp = &data->res; | |
c970aa85 | 5081 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5082 | if (IS_ERR(task)) |
fe650407 | 5083 | return PTR_ERR(task); |
e6f81075 TM |
5084 | if (!issync) |
5085 | goto out; | |
fe650407 | 5086 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5087 | if (status != 0) |
5088 | goto out; | |
5089 | status = data->rpc_status; | |
e144cbcc TM |
5090 | if (status == 0) |
5091 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5092 | else | |
5093 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5094 | out: |
e6b3c4db | 5095 | rpc_put_task(task); |
fe650407 | 5096 | return status; |
1da177e4 LT |
5097 | } |
5098 | ||
e6f81075 | 5099 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5100 | { |
5101 | struct nfs_server *server = NFS_SERVER(inode); | |
5102 | struct nfs4_exception exception = { }; | |
5103 | int err; | |
5104 | do { | |
e6f81075 | 5105 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5106 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5107 | switch (err) { |
5108 | case -NFS4ERR_STALE_STATEID: | |
5109 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5110 | case 0: |
5111 | return 0; | |
5112 | } | |
5113 | err = nfs4_handle_exception(server, err, &exception); | |
5114 | } while (exception.retry); | |
5115 | return err; | |
5116 | } | |
5117 | ||
5118 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5119 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5120 | ||
5121 | /* | |
5122 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5123 | */ | |
5124 | static unsigned long | |
5125 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5126 | { | |
416ad3c9 | 5127 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5128 | timeout <<= 1; |
5129 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5130 | return NFS4_LOCK_MAXTIMEOUT; | |
5131 | return timeout; | |
5132 | } | |
5133 | ||
1da177e4 LT |
5134 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5135 | { | |
5136 | struct inode *inode = state->inode; | |
5137 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5138 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5139 | struct nfs_lockt_args arg = { |
1da177e4 | 5140 | .fh = NFS_FH(inode), |
911d1aaf | 5141 | .fl = request, |
1da177e4 | 5142 | }; |
911d1aaf TM |
5143 | struct nfs_lockt_res res = { |
5144 | .denied = request, | |
1da177e4 LT |
5145 | }; |
5146 | struct rpc_message msg = { | |
5147 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5148 | .rpc_argp = &arg, | |
5149 | .rpc_resp = &res, | |
5150 | .rpc_cred = state->owner->so_cred, | |
5151 | }; | |
1da177e4 LT |
5152 | struct nfs4_lock_state *lsp; |
5153 | int status; | |
5154 | ||
911d1aaf | 5155 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5156 | status = nfs4_set_lock_state(state, request); |
5157 | if (status != 0) | |
5158 | goto out; | |
5159 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5160 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5161 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5162 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5163 | switch (status) { |
5164 | case 0: | |
5165 | request->fl_type = F_UNLCK; | |
5166 | break; | |
5167 | case -NFS4ERR_DENIED: | |
5168 | status = 0; | |
1da177e4 | 5169 | } |
70cc6487 | 5170 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5171 | request->fl_ops = NULL; |
8d0a8a9d | 5172 | out: |
1da177e4 LT |
5173 | return status; |
5174 | } | |
5175 | ||
5176 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5177 | { | |
5178 | struct nfs4_exception exception = { }; | |
5179 | int err; | |
5180 | ||
5181 | do { | |
d1b748a5 TM |
5182 | err = _nfs4_proc_getlk(state, cmd, request); |
5183 | trace_nfs4_get_lock(request, state, cmd, err); | |
5184 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5185 | &exception); |
5186 | } while (exception.retry); | |
5187 | return err; | |
5188 | } | |
5189 | ||
5190 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
5191 | { | |
5192 | int res = 0; | |
5193 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5194 | case FL_POSIX: | |
5195 | res = posix_lock_file_wait(file, fl); | |
5196 | break; | |
5197 | case FL_FLOCK: | |
5198 | res = flock_lock_file_wait(file, fl); | |
5199 | break; | |
5200 | default: | |
5201 | BUG(); | |
5202 | } | |
1da177e4 LT |
5203 | return res; |
5204 | } | |
5205 | ||
faf5f49c | 5206 | struct nfs4_unlockdata { |
911d1aaf TM |
5207 | struct nfs_locku_args arg; |
5208 | struct nfs_locku_res res; | |
faf5f49c TM |
5209 | struct nfs4_lock_state *lsp; |
5210 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5211 | struct file_lock fl; |
5212 | const struct nfs_server *server; | |
26e976a8 | 5213 | unsigned long timestamp; |
faf5f49c TM |
5214 | }; |
5215 | ||
911d1aaf TM |
5216 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5217 | struct nfs_open_context *ctx, | |
5218 | struct nfs4_lock_state *lsp, | |
5219 | struct nfs_seqid *seqid) | |
5220 | { | |
5221 | struct nfs4_unlockdata *p; | |
5222 | struct inode *inode = lsp->ls_state->inode; | |
5223 | ||
8535b2be | 5224 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5225 | if (p == NULL) |
5226 | return NULL; | |
5227 | p->arg.fh = NFS_FH(inode); | |
5228 | p->arg.fl = &p->fl; | |
5229 | p->arg.seqid = seqid; | |
c1d51931 | 5230 | p->res.seqid = seqid; |
911d1aaf TM |
5231 | p->arg.stateid = &lsp->ls_stateid; |
5232 | p->lsp = lsp; | |
5233 | atomic_inc(&lsp->ls_count); | |
5234 | /* Ensure we don't close file until we're done freeing locks! */ | |
5235 | p->ctx = get_nfs_open_context(ctx); | |
5236 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5237 | p->server = NFS_SERVER(inode); | |
5238 | return p; | |
5239 | } | |
5240 | ||
06f814a3 | 5241 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5242 | { |
963d8fe5 | 5243 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5244 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5245 | nfs4_put_lock_state(calldata->lsp); |
5246 | put_nfs_open_context(calldata->ctx); | |
5247 | kfree(calldata); | |
faf5f49c TM |
5248 | } |
5249 | ||
963d8fe5 | 5250 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5251 | { |
963d8fe5 | 5252 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5253 | |
14516c3a TM |
5254 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5255 | return; | |
faf5f49c TM |
5256 | switch (task->tk_status) { |
5257 | case 0: | |
f597c537 TM |
5258 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
5259 | &calldata->res.stateid); | |
26e976a8 | 5260 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 5261 | break; |
9e33bed5 TM |
5262 | case -NFS4ERR_BAD_STATEID: |
5263 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5264 | case -NFS4ERR_STALE_STATEID: |
5265 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
5266 | break; |
5267 | default: | |
9e33bed5 | 5268 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 5269 | rpc_restart_call_prepare(task); |
faf5f49c | 5270 | } |
2b1bc308 | 5271 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5272 | } |
5273 | ||
4ce70ada | 5274 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5275 | { |
4ce70ada | 5276 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5277 | |
911d1aaf | 5278 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5279 | goto out_wait; |
795a88c9 | 5280 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5281 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5282 | goto out_no_action; |
faf5f49c | 5283 | } |
26e976a8 | 5284 | calldata->timestamp = jiffies; |
035168ab | 5285 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5286 | &calldata->arg.seq_args, |
2240a9e2 TM |
5287 | &calldata->res.seq_res, |
5288 | task) != 0) | |
5289 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5290 | return; |
5291 | out_no_action: | |
5292 | task->tk_action = NULL; | |
5293 | out_wait: | |
5294 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5295 | } |
5296 | ||
963d8fe5 | 5297 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5298 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5299 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5300 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5301 | }; |
5302 | ||
a5d16a4d TM |
5303 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5304 | struct nfs_open_context *ctx, | |
5305 | struct nfs4_lock_state *lsp, | |
5306 | struct nfs_seqid *seqid) | |
5307 | { | |
5308 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5309 | struct rpc_message msg = { |
5310 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5311 | .rpc_cred = ctx->cred, | |
5312 | }; | |
c970aa85 TM |
5313 | struct rpc_task_setup task_setup_data = { |
5314 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5315 | .rpc_message = &msg, |
c970aa85 | 5316 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5317 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5318 | .flags = RPC_TASK_ASYNC, |
5319 | }; | |
a5d16a4d | 5320 | |
fa940720 WAA |
5321 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5322 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5323 | ||
137d6aca FF |
5324 | /* Ensure this is an unlock - when canceling a lock, the |
5325 | * canceled lock is passed in, and it won't be an unlock. | |
5326 | */ | |
5327 | fl->fl_type = F_UNLCK; | |
5328 | ||
a5d16a4d TM |
5329 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5330 | if (data == NULL) { | |
5331 | nfs_free_seqid(seqid); | |
5332 | return ERR_PTR(-ENOMEM); | |
5333 | } | |
5334 | ||
a9c92d6b | 5335 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5336 | msg.rpc_argp = &data->arg; |
5337 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5338 | task_setup_data.callback_data = data; |
5339 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5340 | } |
5341 | ||
faf5f49c TM |
5342 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5343 | { | |
65b62a29 TM |
5344 | struct inode *inode = state->inode; |
5345 | struct nfs4_state_owner *sp = state->owner; | |
5346 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5347 | struct nfs_seqid *seqid; |
1da177e4 | 5348 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
5349 | struct rpc_task *task; |
5350 | int status = 0; | |
536ff0f8 | 5351 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5352 | |
8d0a8a9d | 5353 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5354 | /* Unlock _before_ we do the RPC call */ |
5355 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5356 | /* Exclude nfs_delegation_claim_locks() */ |
5357 | mutex_lock(&sp->so_delegreturn_mutex); | |
5358 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
5359 | down_read(&nfsi->rwsem); |
5360 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
5361 | up_read(&nfsi->rwsem); | |
65b62a29 | 5362 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5363 | goto out; |
19e03c57 TM |
5364 | } |
5365 | up_read(&nfsi->rwsem); | |
65b62a29 | 5366 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5367 | if (status != 0) |
9b073574 TM |
5368 | goto out; |
5369 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5370 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5371 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5372 | goto out; | |
8535b2be | 5373 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 5374 | status = -ENOMEM; |
911d1aaf | 5375 | if (seqid == NULL) |
9b073574 | 5376 | goto out; |
cd3758e3 | 5377 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5378 | status = PTR_ERR(task); |
5379 | if (IS_ERR(task)) | |
9b073574 | 5380 | goto out; |
a5d16a4d | 5381 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5382 | rpc_put_task(task); |
9b073574 | 5383 | out: |
536ff0f8 | 5384 | request->fl_flags = fl_flags; |
d1b748a5 | 5385 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5386 | return status; |
5387 | } | |
5388 | ||
a5d16a4d TM |
5389 | struct nfs4_lockdata { |
5390 | struct nfs_lock_args arg; | |
5391 | struct nfs_lock_res res; | |
5392 | struct nfs4_lock_state *lsp; | |
5393 | struct nfs_open_context *ctx; | |
5394 | struct file_lock fl; | |
26e976a8 | 5395 | unsigned long timestamp; |
a5d16a4d TM |
5396 | int rpc_status; |
5397 | int cancelled; | |
66179efe | 5398 | struct nfs_server *server; |
a5d16a4d TM |
5399 | }; |
5400 | ||
5401 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5402 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5403 | gfp_t gfp_mask) | |
1da177e4 | 5404 | { |
a5d16a4d TM |
5405 | struct nfs4_lockdata *p; |
5406 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5407 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 5408 | |
8535b2be | 5409 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5410 | if (p == NULL) |
5411 | return NULL; | |
5412 | ||
5413 | p->arg.fh = NFS_FH(inode); | |
5414 | p->arg.fl = &p->fl; | |
8535b2be | 5415 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
5416 | if (p->arg.open_seqid == NULL) |
5417 | goto out_free; | |
8535b2be | 5418 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 5419 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 5420 | goto out_free_seqid; |
a5d16a4d | 5421 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 5422 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5423 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5424 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5425 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5426 | p->lsp = lsp; |
66179efe | 5427 | p->server = server; |
a5d16a4d TM |
5428 | atomic_inc(&lsp->ls_count); |
5429 | p->ctx = get_nfs_open_context(ctx); | |
5430 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5431 | return p; | |
2f74c0a0 TM |
5432 | out_free_seqid: |
5433 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5434 | out_free: |
5435 | kfree(p); | |
5436 | return NULL; | |
5437 | } | |
5438 | ||
5439 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5440 | { | |
5441 | struct nfs4_lockdata *data = calldata; | |
5442 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5443 | |
3110ff80 | 5444 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5445 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5446 | goto out_wait; |
a5d16a4d TM |
5447 | /* Do we need to do an open_to_lock_owner? */ |
5448 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 5449 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5450 | goto out_release_lock_seqid; |
8fe72bac | 5451 | } |
8e472f33 | 5452 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 5453 | data->arg.new_lock_owner = 1; |
c1d51931 | 5454 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
5455 | } else |
5456 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
5457 | if (!nfs4_valid_open_stateid(state)) { |
5458 | data->rpc_status = -EBADF; | |
5459 | task->tk_action = NULL; | |
5460 | goto out_release_open_seqid; | |
5461 | } | |
26e976a8 | 5462 | data->timestamp = jiffies; |
035168ab TM |
5463 | if (nfs4_setup_sequence(data->server, |
5464 | &data->arg.seq_args, | |
2240a9e2 | 5465 | &data->res.seq_res, |
d9afbd1b | 5466 | task) == 0) |
66179efe | 5467 | return; |
5d422301 | 5468 | out_release_open_seqid: |
2240a9e2 TM |
5469 | nfs_release_seqid(data->arg.open_seqid); |
5470 | out_release_lock_seqid: | |
5471 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5472 | out_wait: |
5473 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5474 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5475 | } |
5476 | ||
a5d16a4d TM |
5477 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5478 | { | |
5479 | struct nfs4_lockdata *data = calldata; | |
5480 | ||
3110ff80 | 5481 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5482 | |
14516c3a TM |
5483 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5484 | return; | |
66179efe | 5485 | |
a5d16a4d | 5486 | data->rpc_status = task->tk_status; |
a5d16a4d | 5487 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
5488 | if (data->rpc_status == 0) |
5489 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
5490 | else | |
5491 | goto out; | |
5492 | } | |
5493 | if (data->rpc_status == 0) { | |
f597c537 | 5494 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 5495 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 5496 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 5497 | } |
a5d16a4d | 5498 | out: |
3110ff80 | 5499 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5500 | } |
5501 | ||
5502 | static void nfs4_lock_release(void *calldata) | |
5503 | { | |
5504 | struct nfs4_lockdata *data = calldata; | |
5505 | ||
3110ff80 | 5506 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5507 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5508 | if (data->cancelled != 0) { |
5509 | struct rpc_task *task; | |
5510 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5511 | data->arg.lock_seqid); | |
5512 | if (!IS_ERR(task)) | |
bf294b41 | 5513 | rpc_put_task_async(task); |
3110ff80 | 5514 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5515 | } else |
5516 | nfs_free_seqid(data->arg.lock_seqid); | |
5517 | nfs4_put_lock_state(data->lsp); | |
5518 | put_nfs_open_context(data->ctx); | |
5519 | kfree(data); | |
3110ff80 | 5520 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5521 | } |
5522 | ||
5523 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5524 | .rpc_call_prepare = nfs4_lock_prepare, | |
5525 | .rpc_call_done = nfs4_lock_done, | |
5526 | .rpc_release = nfs4_lock_release, | |
5527 | }; | |
5528 | ||
2bee72a6 TM |
5529 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5530 | { | |
2bee72a6 TM |
5531 | switch (error) { |
5532 | case -NFS4ERR_ADMIN_REVOKED: | |
5533 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5534 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5535 | if (new_lock_owner != 0 || |
795a88c9 | 5536 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5537 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5538 | break; |
5539 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5540 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5541 | case -NFS4ERR_EXPIRED: |
5542 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5543 | }; |
5544 | } | |
5545 | ||
afe6c27c | 5546 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5547 | { |
5548 | struct nfs4_lockdata *data; | |
5549 | struct rpc_task *task; | |
5138fde0 TM |
5550 | struct rpc_message msg = { |
5551 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5552 | .rpc_cred = state->owner->so_cred, | |
5553 | }; | |
c970aa85 TM |
5554 | struct rpc_task_setup task_setup_data = { |
5555 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5556 | .rpc_message = &msg, |
c970aa85 | 5557 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5558 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5559 | .flags = RPC_TASK_ASYNC, |
5560 | }; | |
a5d16a4d TM |
5561 | int ret; |
5562 | ||
3110ff80 | 5563 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5564 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5565 | fl->fl_u.nfs4_fl.owner, |
5566 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5567 | if (data == NULL) |
5568 | return -ENOMEM; | |
5569 | if (IS_SETLKW(cmd)) | |
5570 | data->arg.block = 1; | |
a9c92d6b | 5571 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5572 | msg.rpc_argp = &data->arg; |
5573 | msg.rpc_resp = &data->res; | |
c970aa85 | 5574 | task_setup_data.callback_data = data; |
8fe72bac TM |
5575 | if (recovery_type > NFS_LOCK_NEW) { |
5576 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5577 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5578 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
5579 | } | |
c970aa85 | 5580 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5581 | if (IS_ERR(task)) |
a5d16a4d | 5582 | return PTR_ERR(task); |
a5d16a4d TM |
5583 | ret = nfs4_wait_for_completion_rpc_task(task); |
5584 | if (ret == 0) { | |
5585 | ret = data->rpc_status; | |
2bee72a6 TM |
5586 | if (ret) |
5587 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5588 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5589 | } else |
5590 | data->cancelled = 1; | |
e6b3c4db | 5591 | rpc_put_task(task); |
3110ff80 | 5592 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5593 | return ret; |
1da177e4 LT |
5594 | } |
5595 | ||
5596 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5597 | { | |
202b50dc | 5598 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5599 | struct nfs4_exception exception = { |
5600 | .inode = state->inode, | |
5601 | }; | |
202b50dc TM |
5602 | int err; |
5603 | ||
5604 | do { | |
42a2d13e TM |
5605 | /* Cache the lock if possible... */ |
5606 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5607 | return 0; | |
afe6c27c | 5608 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5609 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5610 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5611 | break; |
5612 | nfs4_handle_exception(server, err, &exception); | |
5613 | } while (exception.retry); | |
5614 | return err; | |
1da177e4 LT |
5615 | } |
5616 | ||
5617 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5618 | { | |
202b50dc | 5619 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5620 | struct nfs4_exception exception = { |
5621 | .inode = state->inode, | |
5622 | }; | |
202b50dc TM |
5623 | int err; |
5624 | ||
6bfc93ef TM |
5625 | err = nfs4_set_lock_state(state, request); |
5626 | if (err != 0) | |
5627 | return err; | |
f6de7a39 | 5628 | if (!recover_lost_locks) { |
ef1820f9 N |
5629 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5630 | return 0; | |
5631 | } | |
202b50dc | 5632 | do { |
42a2d13e TM |
5633 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5634 | return 0; | |
afe6c27c | 5635 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5636 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5637 | switch (err) { |
5638 | default: | |
5639 | goto out; | |
5640 | case -NFS4ERR_GRACE: | |
5641 | case -NFS4ERR_DELAY: | |
5642 | nfs4_handle_exception(server, err, &exception); | |
5643 | err = 0; | |
5644 | } | |
202b50dc | 5645 | } while (exception.retry); |
a9ed2e25 | 5646 | out: |
202b50dc | 5647 | return err; |
1da177e4 LT |
5648 | } |
5649 | ||
f062eb6c | 5650 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5651 | /** |
5652 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5653 | * | |
5654 | * @state: NFSv4 state for an inode | |
5655 | * | |
5656 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5657 | * Otherwise a negative NFS4ERR value is returned. | |
5658 | */ | |
b01dd1d8 | 5659 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5660 | { |
eb64cf96 | 5661 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5662 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5663 | struct nfs_server *server = NFS_SERVER(state->inode); |
5664 | ||
b01dd1d8 | 5665 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5666 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5667 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5668 | ||
5669 | status = nfs41_test_stateid(server, | |
5670 | &lsp->ls_stateid, | |
5671 | cred); | |
08cb47fa | 5672 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5673 | if (status != NFS_OK) { |
3e60ffdd CL |
5674 | /* Free the stateid unless the server |
5675 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5676 | if (status != -NFS4ERR_BAD_STATEID) |
5677 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5678 | &lsp->ls_stateid, |
5679 | cred); | |
795a88c9 | 5680 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5681 | ret = status; |
5682 | } | |
5683 | } | |
5684 | }; | |
5685 | ||
5686 | return ret; | |
5687 | } | |
5688 | ||
5689 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5690 | { | |
5691 | int status = NFS_OK; | |
5692 | ||
5693 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5694 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5695 | if (status != NFS_OK) |
5696 | status = nfs4_lock_expired(state, request); | |
5697 | return status; | |
f062eb6c BS |
5698 | } |
5699 | #endif | |
5700 | ||
1da177e4 LT |
5701 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5702 | { | |
9a99af49 | 5703 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5704 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5705 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5706 | unsigned int seq; |
8e469ebd | 5707 | int status = -ENOLCK; |
1da177e4 | 5708 | |
8e469ebd TM |
5709 | if ((fl_flags & FL_POSIX) && |
5710 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5711 | goto out; | |
6bfc93ef | 5712 | /* Is this a delegated open? */ |
6bfc93ef TM |
5713 | status = nfs4_set_lock_state(state, request); |
5714 | if (status != 0) | |
5715 | goto out; | |
01c3b861 TM |
5716 | request->fl_flags |= FL_ACCESS; |
5717 | status = do_vfs_lock(request->fl_file, request); | |
5718 | if (status < 0) | |
5719 | goto out; | |
19e03c57 | 5720 | down_read(&nfsi->rwsem); |
01c3b861 | 5721 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5722 | /* Yes: cache locks! */ |
01c3b861 | 5723 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5724 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5725 | status = do_vfs_lock(request->fl_file, request); | |
5726 | goto out_unlock; | |
01c3b861 | 5727 | } |
9a99af49 TM |
5728 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5729 | up_read(&nfsi->rwsem); | |
afe6c27c | 5730 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5731 | if (status != 0) |
9a99af49 TM |
5732 | goto out; |
5733 | down_read(&nfsi->rwsem); | |
5734 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5735 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5736 | goto out_unlock; |
9a99af49 | 5737 | } |
6bfc93ef | 5738 | /* Note: we always want to sleep here! */ |
01c3b861 | 5739 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5740 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5741 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5742 | "manager!\n", __func__); | |
01c3b861 | 5743 | out_unlock: |
19e03c57 | 5744 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5745 | out: |
5746 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5747 | return status; |
5748 | } | |
5749 | ||
5750 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5751 | { | |
a1d0b5ee TM |
5752 | struct nfs4_exception exception = { |
5753 | .state = state, | |
05ffe24f | 5754 | .inode = state->inode, |
a1d0b5ee | 5755 | }; |
1da177e4 LT |
5756 | int err; |
5757 | ||
5758 | do { | |
965b5d67 | 5759 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 5760 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
5761 | if (err == -NFS4ERR_DENIED) |
5762 | err = -EAGAIN; | |
1da177e4 | 5763 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5764 | err, &exception); |
1da177e4 LT |
5765 | } while (exception.retry); |
5766 | return err; | |
5767 | } | |
5768 | ||
5769 | static int | |
5770 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5771 | { | |
5772 | struct nfs_open_context *ctx; | |
5773 | struct nfs4_state *state; | |
5774 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5775 | int status; | |
5776 | ||
5777 | /* verify open state */ | |
cd3758e3 | 5778 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5779 | state = ctx->state; |
5780 | ||
5781 | if (request->fl_start < 0 || request->fl_end < 0) | |
5782 | return -EINVAL; | |
5783 | ||
d953126a TM |
5784 | if (IS_GETLK(cmd)) { |
5785 | if (state != NULL) | |
5786 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5787 | return 0; | |
5788 | } | |
1da177e4 LT |
5789 | |
5790 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5791 | return -EINVAL; | |
5792 | ||
d953126a TM |
5793 | if (request->fl_type == F_UNLCK) { |
5794 | if (state != NULL) | |
5795 | return nfs4_proc_unlck(state, cmd, request); | |
5796 | return 0; | |
5797 | } | |
1da177e4 | 5798 | |
d953126a TM |
5799 | if (state == NULL) |
5800 | return -ENOLCK; | |
55725513 TM |
5801 | /* |
5802 | * Don't rely on the VFS having checked the file open mode, | |
5803 | * since it won't do this for flock() locks. | |
5804 | */ | |
f44106e2 | 5805 | switch (request->fl_type) { |
55725513 TM |
5806 | case F_RDLCK: |
5807 | if (!(filp->f_mode & FMODE_READ)) | |
5808 | return -EBADF; | |
5809 | break; | |
5810 | case F_WRLCK: | |
5811 | if (!(filp->f_mode & FMODE_WRITE)) | |
5812 | return -EBADF; | |
5813 | } | |
5814 | ||
1da177e4 LT |
5815 | do { |
5816 | status = nfs4_proc_setlk(state, cmd, request); | |
5817 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5818 | break; | |
5819 | timeout = nfs4_set_lock_task_retry(timeout); | |
5820 | status = -ERESTARTSYS; | |
5821 | if (signalled()) | |
5822 | break; | |
5823 | } while(status < 0); | |
1da177e4 LT |
5824 | return status; |
5825 | } | |
5826 | ||
db4f2e63 | 5827 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5828 | { |
5829 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5830 | int err; |
5831 | ||
5832 | err = nfs4_set_lock_state(state, fl); | |
5833 | if (err != 0) | |
db4f2e63 | 5834 | return err; |
4a706fa0 | 5835 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5836 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5837 | } |
6b3b5496 | 5838 | |
cf470c3e TM |
5839 | struct nfs_release_lockowner_data { |
5840 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5841 | struct nfs_server *server; |
cf470c3e | 5842 | struct nfs_release_lockowner_args args; |
b7e63a10 | 5843 | struct nfs_release_lockowner_res res; |
60ea6812 | 5844 | unsigned long timestamp; |
cf470c3e TM |
5845 | }; |
5846 | ||
fbd4bfd1 CL |
5847 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
5848 | { | |
5849 | struct nfs_release_lockowner_data *data = calldata; | |
5850 | nfs40_setup_sequence(data->server, | |
b7e63a10 | 5851 | &data->args.seq_args, &data->res.seq_res, task); |
60ea6812 | 5852 | data->timestamp = jiffies; |
fbd4bfd1 CL |
5853 | } |
5854 | ||
5855 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
5856 | { | |
5857 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
5858 | struct nfs_server *server = data->server; |
5859 | ||
b7e63a10 | 5860 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
5861 | |
5862 | switch (task->tk_status) { | |
5863 | case 0: | |
5864 | renew_lease(server, data->timestamp); | |
5865 | break; | |
5866 | case -NFS4ERR_STALE_CLIENTID: | |
5867 | case -NFS4ERR_EXPIRED: | |
5868 | case -NFS4ERR_LEASE_MOVED: | |
5869 | case -NFS4ERR_DELAY: | |
5870 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) | |
5871 | rpc_restart_call_prepare(task); | |
5872 | } | |
fbd4bfd1 CL |
5873 | } |
5874 | ||
d3c7b7cc TM |
5875 | static void nfs4_release_lockowner_release(void *calldata) |
5876 | { | |
cf470c3e | 5877 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5878 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5879 | kfree(calldata); |
5880 | } | |
5881 | ||
17280175 | 5882 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
5883 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
5884 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
5885 | .rpc_release = nfs4_release_lockowner_release, |
5886 | }; | |
5887 | ||
c8b2d0bf | 5888 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5889 | { |
cf470c3e | 5890 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5891 | struct rpc_message msg = { |
5892 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5893 | }; | |
5894 | ||
5895 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e | 5896 | return -EINVAL; |
fbd4bfd1 | 5897 | |
cf470c3e TM |
5898 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5899 | if (!data) | |
5900 | return -ENOMEM; | |
5901 | data->lsp = lsp; | |
5ae67c4f | 5902 | data->server = server; |
cf470c3e TM |
5903 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5904 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5905 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 5906 | |
cf470c3e | 5907 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
5908 | msg.rpc_resp = &data->res; |
5909 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e TM |
5910 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
5911 | return 0; | |
d3c7b7cc TM |
5912 | } |
5913 | ||
aa1870af BF |
5914 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5915 | ||
64c2ce8b AK |
5916 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5917 | const void *buf, size_t buflen, | |
5918 | int flags, int type) | |
6b3b5496 | 5919 | { |
64c2ce8b AK |
5920 | if (strcmp(key, "") != 0) |
5921 | return -EINVAL; | |
4b580ee3 | 5922 | |
64c2ce8b | 5923 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5924 | } |
5925 | ||
64c2ce8b AK |
5926 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5927 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5928 | { |
64c2ce8b AK |
5929 | if (strcmp(key, "") != 0) |
5930 | return -EINVAL; | |
aa1870af | 5931 | |
64c2ce8b | 5932 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5933 | } |
5934 | ||
64c2ce8b AK |
5935 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5936 | size_t list_len, const char *name, | |
5937 | size_t name_len, int type) | |
6b3b5496 | 5938 | { |
64c2ce8b | 5939 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5940 | |
096455a2 BF |
5941 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5942 | return 0; | |
64c2ce8b AK |
5943 | |
5944 | if (list && len <= list_len) | |
5945 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5946 | return len; |
6b3b5496 BF |
5947 | } |
5948 | ||
c9bccef6 DQ |
5949 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5950 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
5951 | { | |
5952 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
5953 | } | |
5954 | ||
5955 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
5956 | const void *buf, size_t buflen, | |
5957 | int flags, int type) | |
5958 | { | |
5959 | if (security_ismaclabel(key)) | |
5960 | return nfs4_set_security_label(dentry, buf, buflen); | |
5961 | ||
5962 | return -EOPNOTSUPP; | |
5963 | } | |
5964 | ||
5965 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
5966 | void *buf, size_t buflen, int type) | |
5967 | { | |
5968 | if (security_ismaclabel(key)) | |
5969 | return nfs4_get_security_label(dentry->d_inode, buf, buflen); | |
5970 | return -EOPNOTSUPP; | |
5971 | } | |
5972 | ||
5973 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
5974 | size_t list_len, const char *name, | |
5975 | size_t name_len, int type) | |
5976 | { | |
5977 | size_t len = 0; | |
5978 | ||
5979 | if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) { | |
5980 | len = security_inode_listsecurity(dentry->d_inode, NULL, 0); | |
5981 | if (list && len <= list_len) | |
5982 | security_inode_listsecurity(dentry->d_inode, list, len); | |
5983 | } | |
5984 | return len; | |
5985 | } | |
5986 | ||
5987 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
5988 | .prefix = XATTR_SECURITY_PREFIX, | |
5989 | .list = nfs4_xattr_list_nfs4_label, | |
5990 | .get = nfs4_xattr_get_nfs4_label, | |
5991 | .set = nfs4_xattr_set_nfs4_label, | |
5992 | }; | |
5993 | #endif | |
5994 | ||
5995 | ||
533eb461 AA |
5996 | /* |
5997 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5998 | */ | |
69aaaae1 TM |
5999 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6000 | { | |
533eb461 AA |
6001 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6002 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6003 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6004 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6005 | return; |
6006 | ||
6007 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6008 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6009 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6010 | fattr->nlink = 2; | |
6011 | } | |
6012 | ||
f05d147f BS |
6013 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6014 | const struct qstr *name, | |
6015 | struct nfs4_fs_locations *fs_locations, | |
6016 | struct page *page) | |
683b57b4 TM |
6017 | { |
6018 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6019 | u32 bitmask[3] = { |
361e624f | 6020 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6021 | }; |
6022 | struct nfs4_fs_locations_arg args = { | |
6023 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6024 | .name = name, |
683b57b4 TM |
6025 | .page = page, |
6026 | .bitmask = bitmask, | |
6027 | }; | |
22958463 BH |
6028 | struct nfs4_fs_locations_res res = { |
6029 | .fs_locations = fs_locations, | |
6030 | }; | |
683b57b4 TM |
6031 | struct rpc_message msg = { |
6032 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6033 | .rpc_argp = &args, | |
22958463 | 6034 | .rpc_resp = &res, |
683b57b4 TM |
6035 | }; |
6036 | int status; | |
6037 | ||
3110ff80 | 6038 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6039 | |
6040 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6041 | * is not supported */ | |
6042 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6043 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6044 | else | |
6045 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6046 | ||
c228fd3a | 6047 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6048 | fs_locations->server = server; |
830b8e33 | 6049 | fs_locations->nlocations = 0; |
f05d147f | 6050 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6051 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6052 | return status; |
6053 | } | |
6054 | ||
f05d147f BS |
6055 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6056 | const struct qstr *name, | |
6057 | struct nfs4_fs_locations *fs_locations, | |
6058 | struct page *page) | |
db0a9593 BS |
6059 | { |
6060 | struct nfs4_exception exception = { }; | |
6061 | int err; | |
6062 | do { | |
078ea3df TM |
6063 | err = _nfs4_proc_fs_locations(client, dir, name, |
6064 | fs_locations, page); | |
6065 | trace_nfs4_get_fs_locations(dir, name, err); | |
6066 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6067 | &exception); |
6068 | } while (exception.retry); | |
6069 | return err; | |
6070 | } | |
6071 | ||
b03d735b CL |
6072 | /* |
6073 | * This operation also signals the server that this client is | |
6074 | * performing migration recovery. The server can stop returning | |
6075 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6076 | * appended to this compound to identify the client ID which is | |
6077 | * performing recovery. | |
6078 | */ | |
6079 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6080 | struct nfs4_fs_locations *locations, | |
6081 | struct page *page, struct rpc_cred *cred) | |
6082 | { | |
6083 | struct nfs_server *server = NFS_SERVER(inode); | |
6084 | struct rpc_clnt *clnt = server->client; | |
6085 | u32 bitmask[2] = { | |
6086 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6087 | }; | |
6088 | struct nfs4_fs_locations_arg args = { | |
6089 | .clientid = server->nfs_client->cl_clientid, | |
6090 | .fh = NFS_FH(inode), | |
6091 | .page = page, | |
6092 | .bitmask = bitmask, | |
6093 | .migration = 1, /* skip LOOKUP */ | |
6094 | .renew = 1, /* append RENEW */ | |
6095 | }; | |
6096 | struct nfs4_fs_locations_res res = { | |
6097 | .fs_locations = locations, | |
6098 | .migration = 1, | |
6099 | .renew = 1, | |
6100 | }; | |
6101 | struct rpc_message msg = { | |
6102 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6103 | .rpc_argp = &args, | |
6104 | .rpc_resp = &res, | |
6105 | .rpc_cred = cred, | |
6106 | }; | |
6107 | unsigned long now = jiffies; | |
6108 | int status; | |
6109 | ||
6110 | nfs_fattr_init(&locations->fattr); | |
6111 | locations->server = server; | |
6112 | locations->nlocations = 0; | |
6113 | ||
6114 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6115 | nfs4_set_sequence_privileged(&args.seq_args); | |
6116 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6117 | &args.seq_args, &res.seq_res); | |
6118 | if (status) | |
6119 | return status; | |
6120 | ||
6121 | renew_lease(server, now); | |
6122 | return 0; | |
6123 | } | |
6124 | ||
6125 | #ifdef CONFIG_NFS_V4_1 | |
6126 | ||
6127 | /* | |
6128 | * This operation also signals the server that this client is | |
6129 | * performing migration recovery. The server can stop asserting | |
6130 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6131 | * performing this operation is identified in the SEQUENCE | |
6132 | * operation in this compound. | |
6133 | * | |
6134 | * When the client supports GETATTR(fs_locations_info), it can | |
6135 | * be plumbed in here. | |
6136 | */ | |
6137 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6138 | struct nfs4_fs_locations *locations, | |
6139 | struct page *page, struct rpc_cred *cred) | |
6140 | { | |
6141 | struct nfs_server *server = NFS_SERVER(inode); | |
6142 | struct rpc_clnt *clnt = server->client; | |
6143 | u32 bitmask[2] = { | |
6144 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6145 | }; | |
6146 | struct nfs4_fs_locations_arg args = { | |
6147 | .fh = NFS_FH(inode), | |
6148 | .page = page, | |
6149 | .bitmask = bitmask, | |
6150 | .migration = 1, /* skip LOOKUP */ | |
6151 | }; | |
6152 | struct nfs4_fs_locations_res res = { | |
6153 | .fs_locations = locations, | |
6154 | .migration = 1, | |
6155 | }; | |
6156 | struct rpc_message msg = { | |
6157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6158 | .rpc_argp = &args, | |
6159 | .rpc_resp = &res, | |
6160 | .rpc_cred = cred, | |
6161 | }; | |
6162 | int status; | |
6163 | ||
6164 | nfs_fattr_init(&locations->fattr); | |
6165 | locations->server = server; | |
6166 | locations->nlocations = 0; | |
6167 | ||
6168 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6169 | nfs4_set_sequence_privileged(&args.seq_args); | |
6170 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6171 | &args.seq_args, &res.seq_res); | |
6172 | if (status == NFS4_OK && | |
6173 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6174 | status = -NFS4ERR_LEASE_MOVED; | |
6175 | return status; | |
6176 | } | |
6177 | ||
6178 | #endif /* CONFIG_NFS_V4_1 */ | |
6179 | ||
6180 | /** | |
6181 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6182 | * @inode: inode on FSID that is migrating | |
6183 | * @locations: result of query | |
6184 | * @page: buffer | |
6185 | * @cred: credential to use for this operation | |
6186 | * | |
6187 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6188 | * operation failed, or a negative errno if a local error occurred. | |
6189 | * | |
6190 | * On success, "locations" is filled in, but if the server has | |
6191 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6192 | * asserted. | |
6193 | * | |
6194 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6195 | * from this client that require migration recovery. | |
6196 | */ | |
6197 | int nfs4_proc_get_locations(struct inode *inode, | |
6198 | struct nfs4_fs_locations *locations, | |
6199 | struct page *page, struct rpc_cred *cred) | |
6200 | { | |
6201 | struct nfs_server *server = NFS_SERVER(inode); | |
6202 | struct nfs_client *clp = server->nfs_client; | |
6203 | const struct nfs4_mig_recovery_ops *ops = | |
6204 | clp->cl_mvops->mig_recovery_ops; | |
6205 | struct nfs4_exception exception = { }; | |
6206 | int status; | |
6207 | ||
6208 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6209 | (unsigned long long)server->fsid.major, | |
6210 | (unsigned long long)server->fsid.minor, | |
6211 | clp->cl_hostname); | |
6212 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6213 | ||
6214 | do { | |
6215 | status = ops->get_locations(inode, locations, page, cred); | |
6216 | if (status != -NFS4ERR_DELAY) | |
6217 | break; | |
6218 | nfs4_handle_exception(server, status, &exception); | |
6219 | } while (exception.retry); | |
6220 | return status; | |
6221 | } | |
6222 | ||
44c99933 CL |
6223 | /* |
6224 | * This operation also signals the server that this client is | |
6225 | * performing "lease moved" recovery. The server can stop | |
6226 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6227 | * is appended to this compound to identify the client ID which is | |
6228 | * performing recovery. | |
6229 | */ | |
6230 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6231 | { | |
6232 | struct nfs_server *server = NFS_SERVER(inode); | |
6233 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6234 | struct rpc_clnt *clnt = server->client; | |
6235 | struct nfs4_fsid_present_arg args = { | |
6236 | .fh = NFS_FH(inode), | |
6237 | .clientid = clp->cl_clientid, | |
6238 | .renew = 1, /* append RENEW */ | |
6239 | }; | |
6240 | struct nfs4_fsid_present_res res = { | |
6241 | .renew = 1, | |
6242 | }; | |
6243 | struct rpc_message msg = { | |
6244 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6245 | .rpc_argp = &args, | |
6246 | .rpc_resp = &res, | |
6247 | .rpc_cred = cred, | |
6248 | }; | |
6249 | unsigned long now = jiffies; | |
6250 | int status; | |
6251 | ||
6252 | res.fh = nfs_alloc_fhandle(); | |
6253 | if (res.fh == NULL) | |
6254 | return -ENOMEM; | |
6255 | ||
6256 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6257 | nfs4_set_sequence_privileged(&args.seq_args); | |
6258 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6259 | &args.seq_args, &res.seq_res); | |
6260 | nfs_free_fhandle(res.fh); | |
6261 | if (status) | |
6262 | return status; | |
6263 | ||
6264 | do_renew_lease(clp, now); | |
6265 | return 0; | |
6266 | } | |
6267 | ||
6268 | #ifdef CONFIG_NFS_V4_1 | |
6269 | ||
6270 | /* | |
6271 | * This operation also signals the server that this client is | |
6272 | * performing "lease moved" recovery. The server can stop asserting | |
6273 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6274 | * this operation is identified in the SEQUENCE operation in this | |
6275 | * compound. | |
6276 | */ | |
6277 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6278 | { | |
6279 | struct nfs_server *server = NFS_SERVER(inode); | |
6280 | struct rpc_clnt *clnt = server->client; | |
6281 | struct nfs4_fsid_present_arg args = { | |
6282 | .fh = NFS_FH(inode), | |
6283 | }; | |
6284 | struct nfs4_fsid_present_res res = { | |
6285 | }; | |
6286 | struct rpc_message msg = { | |
6287 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6288 | .rpc_argp = &args, | |
6289 | .rpc_resp = &res, | |
6290 | .rpc_cred = cred, | |
6291 | }; | |
6292 | int status; | |
6293 | ||
6294 | res.fh = nfs_alloc_fhandle(); | |
6295 | if (res.fh == NULL) | |
6296 | return -ENOMEM; | |
6297 | ||
6298 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6299 | nfs4_set_sequence_privileged(&args.seq_args); | |
6300 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6301 | &args.seq_args, &res.seq_res); | |
6302 | nfs_free_fhandle(res.fh); | |
6303 | if (status == NFS4_OK && | |
6304 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6305 | status = -NFS4ERR_LEASE_MOVED; | |
6306 | return status; | |
6307 | } | |
6308 | ||
6309 | #endif /* CONFIG_NFS_V4_1 */ | |
6310 | ||
6311 | /** | |
6312 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6313 | * @inode: inode on FSID to check | |
6314 | * @cred: credential to use for this operation | |
6315 | * | |
6316 | * Server indicates whether the FSID is present, moved, or not | |
6317 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6318 | * condition for this client ID. | |
6319 | * | |
6320 | * Returns NFS4_OK if the FSID is present on this server, | |
6321 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6322 | * NFS4ERR code if some error occurred on the server, or a | |
6323 | * negative errno if a local failure occurred. | |
6324 | */ | |
6325 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6326 | { | |
6327 | struct nfs_server *server = NFS_SERVER(inode); | |
6328 | struct nfs_client *clp = server->nfs_client; | |
6329 | const struct nfs4_mig_recovery_ops *ops = | |
6330 | clp->cl_mvops->mig_recovery_ops; | |
6331 | struct nfs4_exception exception = { }; | |
6332 | int status; | |
6333 | ||
6334 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6335 | (unsigned long long)server->fsid.major, | |
6336 | (unsigned long long)server->fsid.minor, | |
6337 | clp->cl_hostname); | |
6338 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6339 | ||
6340 | do { | |
6341 | status = ops->fsid_present(inode, cred); | |
6342 | if (status != -NFS4ERR_DELAY) | |
6343 | break; | |
6344 | nfs4_handle_exception(server, status, &exception); | |
6345 | } while (exception.retry); | |
6346 | return status; | |
6347 | } | |
6348 | ||
5ec16a85 | 6349 | /** |
a5250def WAA |
6350 | * If 'use_integrity' is true and the state managment nfs_client |
6351 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6352 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6353 | * Considerations sections. Otherwise, just use the user cred with the | |
6354 | * filesystem's rpc_client. | |
5ec16a85 | 6355 | */ |
a5250def | 6356 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6357 | { |
6358 | int status; | |
6359 | struct nfs4_secinfo_arg args = { | |
6360 | .dir_fh = NFS_FH(dir), | |
6361 | .name = name, | |
6362 | }; | |
6363 | struct nfs4_secinfo_res res = { | |
6364 | .flavors = flavors, | |
6365 | }; | |
6366 | struct rpc_message msg = { | |
6367 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6368 | .rpc_argp = &args, | |
6369 | .rpc_resp = &res, | |
6370 | }; | |
a5250def | 6371 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6372 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6373 | |
6374 | if (use_integrity) { | |
6375 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6376 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6377 | msg.rpc_cred = cred; | |
a5250def | 6378 | } |
5a5ea0d4 BS |
6379 | |
6380 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6381 | |
6382 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6383 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6384 | ||
a5250def WAA |
6385 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6386 | &res.seq_res, 0); | |
5a5ea0d4 | 6387 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6388 | |
7cb852df WAA |
6389 | if (cred) |
6390 | put_rpccred(cred); | |
a5250def | 6391 | |
5a5ea0d4 BS |
6392 | return status; |
6393 | } | |
6394 | ||
72de53ec BS |
6395 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6396 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6397 | { |
6398 | struct nfs4_exception exception = { }; | |
6399 | int err; | |
6400 | do { | |
a5250def WAA |
6401 | err = -NFS4ERR_WRONGSEC; |
6402 | ||
6403 | /* try to use integrity protection with machine cred */ | |
6404 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6405 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6406 | ||
6407 | /* | |
6408 | * if unable to use integrity protection, or SECINFO with | |
6409 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6410 | * disallowed by spec, but exists in deployed servers) use | |
6411 | * the current filesystem's rpc_client and the user cred. | |
6412 | */ | |
6413 | if (err == -NFS4ERR_WRONGSEC) | |
6414 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6415 | ||
078ea3df TM |
6416 | trace_nfs4_secinfo(dir, name, err); |
6417 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6418 | &exception); |
6419 | } while (exception.retry); | |
6420 | return err; | |
6421 | } | |
6422 | ||
557134a3 | 6423 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6424 | /* |
6425 | * Check the exchange flags returned by the server for invalid flags, having | |
6426 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6427 | * DS flags set. | |
6428 | */ | |
6429 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6430 | { | |
6431 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6432 | goto out_inval; | |
6433 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6434 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6435 | goto out_inval; | |
6436 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6437 | goto out_inval; | |
6438 | return NFS_OK; | |
6439 | out_inval: | |
6440 | return -NFS4ERR_INVAL; | |
6441 | } | |
6442 | ||
78fe0f41 | 6443 | static bool |
79d4e1f0 CL |
6444 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6445 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6446 | { |
6447 | if (a->server_scope_sz == b->server_scope_sz && | |
6448 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6449 | return true; | |
6450 | ||
6451 | return false; | |
6452 | } | |
6453 | ||
7c44f1ae WAA |
6454 | /* |
6455 | * nfs4_proc_bind_conn_to_session() | |
6456 | * | |
6457 | * The 4.1 client currently uses the same TCP connection for the | |
6458 | * fore and backchannel. | |
6459 | */ | |
2cf047c9 | 6460 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6461 | { |
6462 | int status; | |
6463 | struct nfs41_bind_conn_to_session_res res; | |
6464 | struct rpc_message msg = { | |
6465 | .rpc_proc = | |
6466 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
6467 | .rpc_argp = clp, | |
6468 | .rpc_resp = &res, | |
2cf047c9 | 6469 | .rpc_cred = cred, |
7c44f1ae WAA |
6470 | }; |
6471 | ||
6472 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
6473 | |
6474 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
6475 | if (unlikely(res.session == NULL)) { | |
6476 | status = -ENOMEM; | |
6477 | goto out; | |
6478 | } | |
6479 | ||
6480 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6481 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae WAA |
6482 | if (status == 0) { |
6483 | if (memcmp(res.session->sess_id.data, | |
6484 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
6485 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6486 | status = -EIO; | |
6487 | goto out_session; | |
6488 | } | |
6489 | if (res.dir != NFS4_CDFS4_BOTH) { | |
6490 | dprintk("NFS: %s: Unexpected direction from server\n", | |
6491 | __func__); | |
6492 | status = -EIO; | |
6493 | goto out_session; | |
6494 | } | |
6495 | if (res.use_conn_in_rdma_mode) { | |
6496 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
6497 | __func__); | |
6498 | status = -EIO; | |
6499 | goto out_session; | |
6500 | } | |
6501 | } | |
6502 | out_session: | |
6503 | kfree(res.session); | |
6504 | out: | |
6505 | dprintk("<-- %s status= %d\n", __func__, status); | |
6506 | return status; | |
6507 | } | |
6508 | ||
99fe60d0 | 6509 | /* |
fa940720 WAA |
6510 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6511 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6512 | */ |
6513 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6514 | .how = SP4_MACH_CRED, | |
6515 | .enforce.u.words = { | |
6516 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6517 | 1 << (OP_EXCHANGE_ID - 32) | | |
6518 | 1 << (OP_CREATE_SESSION - 32) | | |
6519 | 1 << (OP_DESTROY_SESSION - 32) | | |
6520 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6521 | }, |
6522 | .allow.u.words = { | |
6523 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6524 | 1 << (OP_LOCKU) | |
6525 | 1 << (OP_COMMIT), | |
8b5bee2e | 6526 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6527 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6528 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6529 | 1 << (OP_FREE_STATEID - 32) | |
6530 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6531 | } |
6532 | }; | |
6533 | ||
6534 | /* | |
6535 | * Select the state protection mode for client `clp' given the server results | |
6536 | * from exchange_id in `sp'. | |
99fe60d0 | 6537 | * |
2031cd1a WAA |
6538 | * Returns 0 on success, negative errno otherwise. |
6539 | */ | |
6540 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6541 | struct nfs41_state_protection *sp) | |
6542 | { | |
6543 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6544 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6545 | 1 << (OP_EXCHANGE_ID - 32) | | |
6546 | 1 << (OP_CREATE_SESSION - 32) | | |
6547 | 1 << (OP_DESTROY_SESSION - 32) | | |
6548 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6549 | }; | |
6550 | unsigned int i; | |
6551 | ||
6552 | if (sp->how == SP4_MACH_CRED) { | |
6553 | /* Print state protect result */ | |
6554 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6555 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6556 | if (test_bit(i, sp->enforce.u.longs)) | |
6557 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6558 | if (test_bit(i, sp->allow.u.longs)) | |
6559 | dfprintk(MOUNT, " allow op %d\n", i); | |
6560 | } | |
6561 | ||
6562 | /* make sure nothing is on enforce list that isn't supported */ | |
6563 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6564 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6565 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6566 | return -EINVAL; | |
6567 | } | |
6568 | } | |
6569 | ||
6570 | /* | |
6571 | * Minimal mode - state operations are allowed to use machine | |
6572 | * credential. Note this already happens by default, so the | |
6573 | * client doesn't have to do anything more than the negotiation. | |
6574 | * | |
6575 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6576 | * we're already using the machine cred for exchange_id | |
6577 | * and will never use a different cred. | |
6578 | */ | |
6579 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6580 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6581 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6582 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6583 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6584 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6585 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6586 | } else { | |
6587 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6588 | return -EINVAL; | |
6589 | } | |
fa940720 WAA |
6590 | |
6591 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6592 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6593 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6594 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6595 | } | |
8b5bee2e WAA |
6596 | |
6597 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6598 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6599 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6600 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6601 | } | |
3787d506 WAA |
6602 | |
6603 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6604 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6605 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6606 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6607 | } | |
8c21c62c WAA |
6608 | |
6609 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6610 | dfprintk(MOUNT, " write mode enabled\n"); | |
6611 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6612 | } | |
6613 | ||
6614 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6615 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6616 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6617 | } | |
2031cd1a WAA |
6618 | } |
6619 | ||
6620 | return 0; | |
6621 | } | |
6622 | ||
6623 | /* | |
6624 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6625 | * |
2031cd1a | 6626 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6627 | */ |
2031cd1a WAA |
6628 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6629 | u32 sp4_how) | |
99fe60d0 BH |
6630 | { |
6631 | nfs4_verifier verifier; | |
6632 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6633 | .verifier = &verifier, |
99fe60d0 | 6634 | .client = clp, |
cd3fadec | 6635 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6636 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6637 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6638 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6639 | #else | |
6640 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6641 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6642 | #endif | |
99fe60d0 BH |
6643 | }; |
6644 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6645 | 0 |
99fe60d0 BH |
6646 | }; |
6647 | int status; | |
6648 | struct rpc_message msg = { | |
6649 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6650 | .rpc_argp = &args, | |
6651 | .rpc_resp = &res, | |
6652 | .rpc_cred = cred, | |
6653 | }; | |
99fe60d0 | 6654 | |
f092075d | 6655 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
6656 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
6657 | sizeof(args.id)); | |
6bbb4ae8 CL |
6658 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
6659 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6660 | args.id_len, args.id); | |
99fe60d0 | 6661 | |
acdeb69d | 6662 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6663 | GFP_NOFS); |
acdeb69d | 6664 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6665 | status = -ENOMEM; |
6666 | goto out; | |
6667 | } | |
78fe0f41 | 6668 | |
79d4e1f0 | 6669 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6670 | GFP_NOFS); |
177313f1 | 6671 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6672 | status = -ENOMEM; |
acdeb69d | 6673 | goto out_server_owner; |
abe9a6d5 | 6674 | } |
78fe0f41 | 6675 | |
bbafffd2 | 6676 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6677 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6678 | status = -ENOMEM; |
6679 | goto out_server_scope; | |
6680 | } | |
6681 | ||
2031cd1a WAA |
6682 | switch (sp4_how) { |
6683 | case SP4_NONE: | |
6684 | args.state_protect.how = SP4_NONE; | |
6685 | break; | |
6686 | ||
6687 | case SP4_MACH_CRED: | |
6688 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6689 | break; | |
6690 | ||
6691 | default: | |
6692 | /* unsupported! */ | |
6693 | WARN_ON_ONCE(1); | |
6694 | status = -EINVAL; | |
6695 | goto out_server_scope; | |
6696 | } | |
6697 | ||
1bd714f2 | 6698 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6699 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6700 | if (status == 0) |
32b01310 | 6701 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6702 | |
2031cd1a WAA |
6703 | if (status == 0) |
6704 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6705 | ||
acdeb69d | 6706 | if (status == 0) { |
32b01310 TM |
6707 | clp->cl_clientid = res.clientid; |
6708 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
6709 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
6710 | clp->cl_seqid = res.seqid; | |
6711 | ||
acdeb69d CL |
6712 | kfree(clp->cl_serverowner); |
6713 | clp->cl_serverowner = res.server_owner; | |
6714 | res.server_owner = NULL; | |
78fe0f41 | 6715 | |
7d2ed9ac | 6716 | /* use the most recent implementation id */ |
59155546 CL |
6717 | kfree(clp->cl_implid); |
6718 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 6719 | |
177313f1 | 6720 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 6721 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
6722 | res.server_scope)) { |
6723 | dprintk("%s: server_scope mismatch detected\n", | |
6724 | __func__); | |
6725 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
6726 | kfree(clp->cl_serverscope); |
6727 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
6728 | } |
6729 | ||
177313f1 | 6730 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 6731 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
6732 | goto out; |
6733 | } | |
32b01310 TM |
6734 | } else |
6735 | kfree(res.impl_id); | |
7d2ed9ac | 6736 | |
acdeb69d CL |
6737 | out_server_owner: |
6738 | kfree(res.server_owner); | |
7d2ed9ac | 6739 | out_server_scope: |
abe9a6d5 WAA |
6740 | kfree(res.server_scope); |
6741 | out: | |
177313f1 | 6742 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 6743 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 6744 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 6745 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
6746 | clp->cl_implid->date.seconds, |
6747 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 6748 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
6749 | return status; |
6750 | } | |
6751 | ||
2031cd1a WAA |
6752 | /* |
6753 | * nfs4_proc_exchange_id() | |
6754 | * | |
6755 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6756 | * | |
6757 | * Since the clientid has expired, all compounds using sessions | |
6758 | * associated with the stale clientid will be returning | |
6759 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
6760 | * be in some phase of session reset. | |
6761 | * | |
6762 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
6763 | */ | |
6764 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
6765 | { | |
6766 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
6767 | int status; | |
6768 | ||
6769 | /* try SP4_MACH_CRED if krb5i/p */ | |
6770 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
6771 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
6772 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
6773 | if (!status) | |
6774 | return 0; | |
6775 | } | |
6776 | ||
6777 | /* try SP4_NONE */ | |
6778 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
6779 | } | |
6780 | ||
66245539 TM |
6781 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
6782 | struct rpc_cred *cred) | |
6783 | { | |
6784 | struct rpc_message msg = { | |
6785 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
6786 | .rpc_argp = clp, | |
6787 | .rpc_cred = cred, | |
6788 | }; | |
6789 | int status; | |
6790 | ||
6791 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6792 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 6793 | if (status) |
02c67525 | 6794 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
6795 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
6796 | return status; | |
6797 | } | |
6798 | ||
6799 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
6800 | struct rpc_cred *cred) | |
6801 | { | |
6802 | unsigned int loop; | |
6803 | int ret; | |
6804 | ||
6805 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
6806 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
6807 | switch (ret) { | |
6808 | case -NFS4ERR_DELAY: | |
6809 | case -NFS4ERR_CLIENTID_BUSY: | |
6810 | ssleep(1); | |
6811 | break; | |
6812 | default: | |
6813 | return ret; | |
6814 | } | |
6815 | } | |
6816 | return 0; | |
6817 | } | |
6818 | ||
6819 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
6820 | { | |
6821 | struct rpc_cred *cred; | |
6822 | int ret = 0; | |
6823 | ||
6824 | if (clp->cl_mvops->minor_version < 1) | |
6825 | goto out; | |
6826 | if (clp->cl_exchange_flags == 0) | |
6827 | goto out; | |
05f4c350 CL |
6828 | if (clp->cl_preserve_clid) |
6829 | goto out; | |
73d8bde5 | 6830 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
6831 | ret = nfs4_proc_destroy_clientid(clp, cred); |
6832 | if (cred) | |
6833 | put_rpccred(cred); | |
6834 | switch (ret) { | |
6835 | case 0: | |
6836 | case -NFS4ERR_STALE_CLIENTID: | |
6837 | clp->cl_exchange_flags = 0; | |
6838 | } | |
6839 | out: | |
6840 | return ret; | |
6841 | } | |
6842 | ||
2050f0cc AA |
6843 | struct nfs4_get_lease_time_data { |
6844 | struct nfs4_get_lease_time_args *args; | |
6845 | struct nfs4_get_lease_time_res *res; | |
6846 | struct nfs_client *clp; | |
6847 | }; | |
6848 | ||
6849 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
6850 | void *calldata) | |
6851 | { | |
2050f0cc AA |
6852 | struct nfs4_get_lease_time_data *data = |
6853 | (struct nfs4_get_lease_time_data *)calldata; | |
6854 | ||
6855 | dprintk("--> %s\n", __func__); | |
6856 | /* just setup sequence, do not trigger session recovery | |
6857 | since we're invoked within one */ | |
d9afbd1b TM |
6858 | nfs41_setup_sequence(data->clp->cl_session, |
6859 | &data->args->la_seq_args, | |
6860 | &data->res->lr_seq_res, | |
6861 | task); | |
2050f0cc AA |
6862 | dprintk("<-- %s\n", __func__); |
6863 | } | |
6864 | ||
6865 | /* | |
6866 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
6867 | * from sequence operation or clientid errors. | |
6868 | */ | |
6869 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
6870 | { | |
6871 | struct nfs4_get_lease_time_data *data = | |
6872 | (struct nfs4_get_lease_time_data *)calldata; | |
6873 | ||
6874 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6875 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
6876 | return; | |
2050f0cc AA |
6877 | switch (task->tk_status) { |
6878 | case -NFS4ERR_DELAY: | |
6879 | case -NFS4ERR_GRACE: | |
6880 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
6881 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
6882 | task->tk_status = 0; | |
a8a4ae3a AA |
6883 | /* fall through */ |
6884 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 6885 | rpc_restart_call_prepare(task); |
2050f0cc AA |
6886 | return; |
6887 | } | |
2050f0cc AA |
6888 | dprintk("<-- %s\n", __func__); |
6889 | } | |
6890 | ||
17280175 | 6891 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
6892 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
6893 | .rpc_call_done = nfs4_get_lease_time_done, | |
6894 | }; | |
6895 | ||
6896 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
6897 | { | |
6898 | struct rpc_task *task; | |
6899 | struct nfs4_get_lease_time_args args; | |
6900 | struct nfs4_get_lease_time_res res = { | |
6901 | .lr_fsinfo = fsinfo, | |
6902 | }; | |
6903 | struct nfs4_get_lease_time_data data = { | |
6904 | .args = &args, | |
6905 | .res = &res, | |
6906 | .clp = clp, | |
6907 | }; | |
6908 | struct rpc_message msg = { | |
6909 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
6910 | .rpc_argp = &args, | |
6911 | .rpc_resp = &res, | |
6912 | }; | |
6913 | struct rpc_task_setup task_setup = { | |
6914 | .rpc_client = clp->cl_rpcclient, | |
6915 | .rpc_message = &msg, | |
6916 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
6917 | .callback_data = &data, |
6918 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
6919 | }; |
6920 | int status; | |
6921 | ||
a9c92d6b | 6922 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 6923 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
6924 | dprintk("--> %s\n", __func__); |
6925 | task = rpc_run_task(&task_setup); | |
6926 | ||
6927 | if (IS_ERR(task)) | |
6928 | status = PTR_ERR(task); | |
6929 | else { | |
6930 | status = task->tk_status; | |
6931 | rpc_put_task(task); | |
6932 | } | |
6933 | dprintk("<-- %s return %d\n", __func__, status); | |
6934 | ||
6935 | return status; | |
6936 | } | |
6937 | ||
fc931582 AA |
6938 | /* |
6939 | * Initialize the values to be used by the client in CREATE_SESSION | |
6940 | * If nfs4_init_session set the fore channel request and response sizes, | |
6941 | * use them. | |
6942 | * | |
6943 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
6944 | * always set csa_cachethis to FALSE because the current implementation | |
6945 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
6946 | */ | |
6947 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
6948 | { | |
18aad3d5 AA |
6949 | unsigned int max_rqst_sz, max_resp_sz; |
6950 | ||
6951 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
6952 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 6953 | |
fc931582 | 6954 | /* Fore channel attributes */ |
18aad3d5 AA |
6955 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
6956 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 6957 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 6958 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
6959 | |
6960 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 6961 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
6962 | __func__, |
6963 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 6964 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
6965 | |
6966 | /* Back channel attributes */ | |
fc931582 AA |
6967 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
6968 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
6969 | args->bc_attrs.max_resp_sz_cached = 0; | |
6970 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
6971 | args->bc_attrs.max_reqs = 1; | |
6972 | ||
6973 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
6974 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
6975 | __func__, | |
6976 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
6977 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
6978 | args->bc_attrs.max_reqs); | |
6979 | } | |
6980 | ||
43c2e885 | 6981 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 6982 | { |
43c2e885 BF |
6983 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
6984 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
6985 | ||
43c2e885 BF |
6986 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
6987 | return -EINVAL; | |
6988 | /* | |
6989 | * Our requested max_ops is the minimum we need; we're not | |
6990 | * prepared to break up compounds into smaller pieces than that. | |
6991 | * So, no point even trying to continue if the server won't | |
6992 | * cooperate: | |
6993 | */ | |
6994 | if (rcvd->max_ops < sent->max_ops) | |
6995 | return -EINVAL; | |
6996 | if (rcvd->max_reqs == 0) | |
6997 | return -EINVAL; | |
b4b9a0c1 VG |
6998 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
6999 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7000 | return 0; |
8d35301d AA |
7001 | } |
7002 | ||
43c2e885 BF |
7003 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
7004 | { | |
7005 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
7006 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 7007 | |
43c2e885 BF |
7008 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7009 | return -EINVAL; | |
7010 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7011 | return -EINVAL; | |
7012 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7013 | return -EINVAL; | |
7014 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7015 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7016 | return -EINVAL; |
b4b9a0c1 | 7017 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
7018 | return -EINVAL; |
7019 | return 0; | |
7020 | } | |
8d35301d | 7021 | |
8d35301d AA |
7022 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
7023 | struct nfs4_session *session) | |
7024 | { | |
43c2e885 | 7025 | int ret; |
8d35301d | 7026 | |
43c2e885 BF |
7027 | ret = nfs4_verify_fore_channel_attrs(args, session); |
7028 | if (ret) | |
7029 | return ret; | |
7030 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
7031 | } |
7032 | ||
848f5bda TM |
7033 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7034 | struct rpc_cred *cred) | |
fc931582 AA |
7035 | { |
7036 | struct nfs4_session *session = clp->cl_session; | |
7037 | struct nfs41_create_session_args args = { | |
7038 | .client = clp, | |
7039 | .cb_program = NFS4_CALLBACK, | |
7040 | }; | |
7041 | struct nfs41_create_session_res res = { | |
7042 | .client = clp, | |
7043 | }; | |
7044 | struct rpc_message msg = { | |
7045 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7046 | .rpc_argp = &args, | |
7047 | .rpc_resp = &res, | |
848f5bda | 7048 | .rpc_cred = cred, |
fc931582 AA |
7049 | }; |
7050 | int status; | |
7051 | ||
7052 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7053 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7054 | |
1bd714f2 | 7055 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7056 | trace_nfs4_create_session(clp, status); |
fc931582 | 7057 | |
43095d39 | 7058 | if (!status) { |
8d35301d AA |
7059 | /* Verify the session's negotiated channel_attrs values */ |
7060 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
7061 | /* Increment the clientid slot sequence id */ |
7062 | clp->cl_seqid++; | |
7063 | } | |
7064 | ||
7065 | return status; | |
7066 | } | |
7067 | ||
7068 | /* | |
7069 | * Issues a CREATE_SESSION operation to the server. | |
7070 | * It is the responsibility of the caller to verify the session is | |
7071 | * expired before calling this routine. | |
7072 | */ | |
848f5bda | 7073 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7074 | { |
7075 | int status; | |
7076 | unsigned *ptr; | |
fc931582 AA |
7077 | struct nfs4_session *session = clp->cl_session; |
7078 | ||
7079 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7080 | ||
848f5bda | 7081 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7082 | if (status) |
7083 | goto out; | |
7084 | ||
aacd5537 AA |
7085 | /* Init or reset the session slot tables */ |
7086 | status = nfs4_setup_session_slot_tables(session); | |
7087 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7088 | if (status) |
7089 | goto out; | |
7090 | ||
7091 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7092 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7093 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7094 | out: |
7095 | dprintk("<-- %s\n", __func__); | |
7096 | return status; | |
7097 | } | |
7098 | ||
0f3e66c6 AA |
7099 | /* |
7100 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7101 | * The caller must serialize access to this routine. | |
7102 | */ | |
848f5bda TM |
7103 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7104 | struct rpc_cred *cred) | |
0f3e66c6 | 7105 | { |
848f5bda TM |
7106 | struct rpc_message msg = { |
7107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7108 | .rpc_argp = session, | |
7109 | .rpc_cred = cred, | |
7110 | }; | |
0f3e66c6 | 7111 | int status = 0; |
0f3e66c6 AA |
7112 | |
7113 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7114 | ||
7115 | /* session is still being setup */ | |
7116 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
7117 | return status; | |
7118 | ||
1bd714f2 | 7119 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7120 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7121 | |
7122 | if (status) | |
08106ac7 | 7123 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7124 | "Session has been destroyed regardless...\n", status); |
7125 | ||
7126 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7127 | return status; | |
7128 | } | |
7129 | ||
fc01cea9 AA |
7130 | /* |
7131 | * Renew the cl_session lease. | |
7132 | */ | |
d5f8d3fe TM |
7133 | struct nfs4_sequence_data { |
7134 | struct nfs_client *clp; | |
7135 | struct nfs4_sequence_args args; | |
7136 | struct nfs4_sequence_res res; | |
7137 | }; | |
7138 | ||
dc96aef9 AB |
7139 | static void nfs41_sequence_release(void *data) |
7140 | { | |
d5f8d3fe TM |
7141 | struct nfs4_sequence_data *calldata = data; |
7142 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7143 | |
7135840f AB |
7144 | if (atomic_read(&clp->cl_count) > 1) |
7145 | nfs4_schedule_state_renewal(clp); | |
7146 | nfs_put_client(clp); | |
d5f8d3fe | 7147 | kfree(calldata); |
dc96aef9 AB |
7148 | } |
7149 | ||
aa5190d0 TM |
7150 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7151 | { | |
7152 | switch(task->tk_status) { | |
7153 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7154 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7155 | return -EAGAIN; | |
7156 | default: | |
0400a6b0 | 7157 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7158 | } |
7159 | return 0; | |
7160 | } | |
7161 | ||
dc96aef9 | 7162 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7163 | { |
d5f8d3fe TM |
7164 | struct nfs4_sequence_data *calldata = data; |
7165 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7166 | |
14516c3a TM |
7167 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7168 | return; | |
fc01cea9 | 7169 | |
c6d01c6f | 7170 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7171 | if (task->tk_status < 0) { |
7172 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7173 | if (atomic_read(&clp->cl_count) == 1) |
7174 | goto out; | |
fc01cea9 | 7175 | |
aa5190d0 TM |
7176 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7177 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7178 | return; |
7179 | } | |
7180 | } | |
fc01cea9 | 7181 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7182 | out: |
fc01cea9 AA |
7183 | dprintk("<-- %s\n", __func__); |
7184 | } | |
7185 | ||
7186 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7187 | { | |
d5f8d3fe TM |
7188 | struct nfs4_sequence_data *calldata = data; |
7189 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7190 | struct nfs4_sequence_args *args; |
7191 | struct nfs4_sequence_res *res; | |
7192 | ||
fc01cea9 AA |
7193 | args = task->tk_msg.rpc_argp; |
7194 | res = task->tk_msg.rpc_resp; | |
7195 | ||
d9afbd1b | 7196 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7197 | } |
7198 | ||
7199 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7200 | .rpc_call_done = nfs41_sequence_call_done, | |
7201 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7202 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7203 | }; |
7204 | ||
8fe72bac TM |
7205 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7206 | struct rpc_cred *cred, | |
7207 | bool is_privileged) | |
fc01cea9 | 7208 | { |
d5f8d3fe | 7209 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7210 | struct rpc_message msg = { |
7211 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7212 | .rpc_cred = cred, | |
7213 | }; | |
71ac6da9 TM |
7214 | struct rpc_task_setup task_setup_data = { |
7215 | .rpc_client = clp->cl_rpcclient, | |
7216 | .rpc_message = &msg, | |
8fe72bac | 7217 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7218 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7219 | }; |
fc01cea9 | 7220 | |
7135840f | 7221 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7222 | return ERR_PTR(-EIO); |
dfb4f309 | 7223 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7224 | if (calldata == NULL) { |
7135840f | 7225 | nfs_put_client(clp); |
71ac6da9 | 7226 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7227 | } |
a9c92d6b | 7228 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7229 | if (is_privileged) |
7230 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7231 | msg.rpc_argp = &calldata->args; |
7232 | msg.rpc_resp = &calldata->res; | |
7233 | calldata->clp = clp; | |
71ac6da9 | 7234 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7235 | |
71ac6da9 TM |
7236 | return rpc_run_task(&task_setup_data); |
7237 | } | |
7238 | ||
2f60ea6b | 7239 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7240 | { |
7241 | struct rpc_task *task; | |
7242 | int ret = 0; | |
7243 | ||
2f60ea6b TM |
7244 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
7245 | return 0; | |
8fe72bac | 7246 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7247 | if (IS_ERR(task)) |
7248 | ret = PTR_ERR(task); | |
7249 | else | |
bf294b41 | 7250 | rpc_put_task_async(task); |
71ac6da9 TM |
7251 | dprintk("<-- %s status=%d\n", __func__, ret); |
7252 | return ret; | |
7253 | } | |
7254 | ||
7255 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7256 | { | |
7257 | struct rpc_task *task; | |
7258 | int ret; | |
7259 | ||
8fe72bac | 7260 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7261 | if (IS_ERR(task)) { |
7262 | ret = PTR_ERR(task); | |
7263 | goto out; | |
7264 | } | |
7265 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
7266 | if (!ret) { |
7267 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
7268 | ||
7269 | if (task->tk_status == 0) | |
7270 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 7271 | ret = task->tk_status; |
b4410c2f | 7272 | } |
71ac6da9 TM |
7273 | rpc_put_task(task); |
7274 | out: | |
7275 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7276 | return ret; | |
fc01cea9 AA |
7277 | } |
7278 | ||
fce5c838 RL |
7279 | struct nfs4_reclaim_complete_data { |
7280 | struct nfs_client *clp; | |
7281 | struct nfs41_reclaim_complete_args arg; | |
7282 | struct nfs41_reclaim_complete_res res; | |
7283 | }; | |
7284 | ||
7285 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7286 | { | |
7287 | struct nfs4_reclaim_complete_data *calldata = data; | |
7288 | ||
d9afbd1b TM |
7289 | nfs41_setup_sequence(calldata->clp->cl_session, |
7290 | &calldata->arg.seq_args, | |
7291 | &calldata->res.seq_res, | |
7292 | task); | |
fce5c838 RL |
7293 | } |
7294 | ||
aa5190d0 TM |
7295 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7296 | { | |
7297 | switch(task->tk_status) { | |
7298 | case 0: | |
7299 | case -NFS4ERR_COMPLETE_ALREADY: | |
7300 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7301 | break; | |
7302 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7303 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7304 | /* fall through */ |
7305 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7306 | return -EAGAIN; |
7307 | default: | |
0400a6b0 | 7308 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7309 | } |
7310 | return 0; | |
7311 | } | |
7312 | ||
fce5c838 RL |
7313 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7314 | { | |
7315 | struct nfs4_reclaim_complete_data *calldata = data; | |
7316 | struct nfs_client *clp = calldata->clp; | |
7317 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7318 | ||
7319 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7320 | if (!nfs41_sequence_done(task, res)) |
7321 | return; | |
fce5c838 | 7322 | |
c6d01c6f | 7323 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7324 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7325 | rpc_restart_call_prepare(task); | |
7326 | return; | |
7327 | } | |
fce5c838 RL |
7328 | dprintk("<-- %s\n", __func__); |
7329 | } | |
7330 | ||
7331 | static void nfs4_free_reclaim_complete_data(void *data) | |
7332 | { | |
7333 | struct nfs4_reclaim_complete_data *calldata = data; | |
7334 | ||
7335 | kfree(calldata); | |
7336 | } | |
7337 | ||
7338 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7339 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7340 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7341 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7342 | }; | |
7343 | ||
7344 | /* | |
7345 | * Issue a global reclaim complete. | |
7346 | */ | |
965e9c23 TM |
7347 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7348 | struct rpc_cred *cred) | |
fce5c838 RL |
7349 | { |
7350 | struct nfs4_reclaim_complete_data *calldata; | |
7351 | struct rpc_task *task; | |
7352 | struct rpc_message msg = { | |
7353 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7354 | .rpc_cred = cred, |
fce5c838 RL |
7355 | }; |
7356 | struct rpc_task_setup task_setup_data = { | |
7357 | .rpc_client = clp->cl_rpcclient, | |
7358 | .rpc_message = &msg, | |
7359 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7360 | .flags = RPC_TASK_ASYNC, | |
7361 | }; | |
7362 | int status = -ENOMEM; | |
7363 | ||
7364 | dprintk("--> %s\n", __func__); | |
8535b2be | 7365 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7366 | if (calldata == NULL) |
7367 | goto out; | |
7368 | calldata->clp = clp; | |
7369 | calldata->arg.one_fs = 0; | |
fce5c838 | 7370 | |
a9c92d6b | 7371 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7372 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7373 | msg.rpc_argp = &calldata->arg; |
7374 | msg.rpc_resp = &calldata->res; | |
7375 | task_setup_data.callback_data = calldata; | |
7376 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7377 | if (IS_ERR(task)) { |
fce5c838 | 7378 | status = PTR_ERR(task); |
acf82b85 DC |
7379 | goto out; |
7380 | } | |
c34c32ea AA |
7381 | status = nfs4_wait_for_completion_rpc_task(task); |
7382 | if (status == 0) | |
7383 | status = task->tk_status; | |
fce5c838 | 7384 | rpc_put_task(task); |
acf82b85 | 7385 | return 0; |
fce5c838 RL |
7386 | out: |
7387 | dprintk("<-- %s status=%d\n", __func__, status); | |
7388 | return status; | |
7389 | } | |
b1f69b75 AA |
7390 | |
7391 | static void | |
7392 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7393 | { | |
7394 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7395 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7396 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7397 | |
7398 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7399 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7400 | * right now covering the LAYOUTGET we are about to send. | |
7401 | * However, that is not so catastrophic, and there seems | |
7402 | * to be no way to prevent it completely. | |
7403 | */ | |
6ba7db34 | 7404 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7405 | &lgp->res.seq_res, task)) |
b1f69b75 | 7406 | return; |
cf7d63f1 FI |
7407 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7408 | NFS_I(lgp->args.inode)->layout, | |
7409 | lgp->args.ctx->state)) { | |
7410 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7411 | } |
b1f69b75 AA |
7412 | } |
7413 | ||
7414 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7415 | { | |
7416 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7417 | struct inode *inode = lgp->args.inode; |
7418 | struct nfs_server *server = NFS_SERVER(inode); | |
7419 | struct pnfs_layout_hdr *lo; | |
7420 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7421 | unsigned long timeo, now, giveup; |
b1f69b75 | 7422 | |
ed7e5423 | 7423 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7424 | |
6ba7db34 | 7425 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7426 | goto out; |
b1f69b75 AA |
7427 | |
7428 | switch (task->tk_status) { | |
7429 | case 0: | |
ee314c2a | 7430 | goto out; |
ed7e5423 BH |
7431 | /* |
7432 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
7433 | * (or clients) writing to the same RAID stripe | |
7434 | */ | |
b1f69b75 | 7435 | case -NFS4ERR_LAYOUTTRYLATER: |
ed7e5423 BH |
7436 | /* |
7437 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7438 | * existing layout before getting a new one). | |
7439 | */ | |
b1f69b75 | 7440 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7441 | timeo = rpc_get_timeout(task->tk_client); |
7442 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7443 | now = jiffies; |
7444 | if (time_after(giveup, now)) { | |
7445 | unsigned long delay; | |
7446 | ||
7447 | /* Delay for: | |
7448 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7449 | * - One last time a jiffie before we give up | |
7450 | * - exponential backoff (time_now minus start_attempt) | |
7451 | */ | |
7452 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7453 | min((giveup - now - 1), | |
7454 | now - lgp->args.timestamp)); | |
7455 | ||
7456 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7457 | __func__, delay); | |
7458 | rpc_delay(task, delay); | |
7459 | task->tk_status = 0; | |
7460 | rpc_restart_call_prepare(task); | |
7461 | goto out; /* Do not call nfs4_async_handle_error() */ | |
7462 | } | |
ee314c2a TM |
7463 | break; |
7464 | case -NFS4ERR_EXPIRED: | |
7465 | case -NFS4ERR_BAD_STATEID: | |
7466 | spin_lock(&inode->i_lock); | |
7467 | lo = NFS_I(inode)->layout; | |
7468 | if (!lo || list_empty(&lo->plh_segs)) { | |
7469 | spin_unlock(&inode->i_lock); | |
7470 | /* If the open stateid was bad, then recover it. */ | |
7471 | state = lgp->args.ctx->state; | |
7472 | } else { | |
7473 | LIST_HEAD(head); | |
7474 | ||
7475 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
7476 | spin_unlock(&inode->i_lock); | |
7477 | /* Mark the bad layout state as invalid, then | |
7478 | * retry using the open stateid. */ | |
7479 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
7480 | } |
7481 | } | |
ee314c2a TM |
7482 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
7483 | rpc_restart_call_prepare(task); | |
7484 | out: | |
b1f69b75 AA |
7485 | dprintk("<-- %s\n", __func__); |
7486 | } | |
7487 | ||
8554116e IK |
7488 | static size_t max_response_pages(struct nfs_server *server) |
7489 | { | |
7490 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7491 | return nfs_page_array_len(0, max_resp_sz); | |
7492 | } | |
7493 | ||
7494 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7495 | { | |
7496 | int i; | |
7497 | ||
7498 | if (!pages) | |
7499 | return; | |
7500 | ||
7501 | for (i = 0; i < size; i++) { | |
7502 | if (!pages[i]) | |
7503 | break; | |
7504 | __free_page(pages[i]); | |
7505 | } | |
7506 | kfree(pages); | |
7507 | } | |
7508 | ||
7509 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7510 | { | |
7511 | struct page **pages; | |
7512 | int i; | |
7513 | ||
7514 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7515 | if (!pages) { | |
7516 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7517 | return NULL; | |
7518 | } | |
7519 | ||
7520 | for (i = 0; i < size; i++) { | |
7521 | pages[i] = alloc_page(gfp_flags); | |
7522 | if (!pages[i]) { | |
7523 | dprintk("%s: failed to allocate page\n", __func__); | |
7524 | nfs4_free_pages(pages, size); | |
7525 | return NULL; | |
7526 | } | |
7527 | } | |
7528 | ||
7529 | return pages; | |
7530 | } | |
7531 | ||
b1f69b75 AA |
7532 | static void nfs4_layoutget_release(void *calldata) |
7533 | { | |
7534 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7535 | struct inode *inode = lgp->args.inode; |
7536 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7537 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7538 | |
7539 | dprintk("--> %s\n", __func__); | |
8554116e | 7540 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7541 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7542 | put_nfs_open_context(lgp->args.ctx); |
7543 | kfree(calldata); | |
7544 | dprintk("<-- %s\n", __func__); | |
7545 | } | |
7546 | ||
7547 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7548 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7549 | .rpc_call_done = nfs4_layoutget_done, | |
7550 | .rpc_release = nfs4_layoutget_release, | |
7551 | }; | |
7552 | ||
a0b0a6e3 TM |
7553 | struct pnfs_layout_segment * |
7554 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7555 | { |
a47970ff WAA |
7556 | struct inode *inode = lgp->args.inode; |
7557 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7558 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7559 | struct rpc_task *task; |
7560 | struct rpc_message msg = { | |
7561 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7562 | .rpc_argp = &lgp->args, | |
7563 | .rpc_resp = &lgp->res, | |
6ab59344 | 7564 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7565 | }; |
7566 | struct rpc_task_setup task_setup_data = { | |
7567 | .rpc_client = server->client, | |
7568 | .rpc_message = &msg, | |
7569 | .callback_ops = &nfs4_layoutget_call_ops, | |
7570 | .callback_data = lgp, | |
7571 | .flags = RPC_TASK_ASYNC, | |
7572 | }; | |
a0b0a6e3 | 7573 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7574 | int status = 0; |
7575 | ||
7576 | dprintk("--> %s\n", __func__); | |
7577 | ||
8554116e IK |
7578 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7579 | if (!lgp->args.layout.pages) { | |
7580 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7581 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7582 | } |
7583 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7584 | lgp->args.timestamp = jiffies; |
8554116e | 7585 | |
35124a09 | 7586 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7587 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7588 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
7589 | |
7590 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
7591 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7592 | ||
b1f69b75 AA |
7593 | task = rpc_run_task(&task_setup_data); |
7594 | if (IS_ERR(task)) | |
a0b0a6e3 | 7595 | return ERR_CAST(task); |
b1f69b75 | 7596 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7597 | if (status == 0) |
7598 | status = task->tk_status; | |
1037e6ea TM |
7599 | trace_nfs4_layoutget(lgp->args.ctx, |
7600 | &lgp->args.range, | |
7601 | &lgp->res.range, | |
7602 | status); | |
085b7a45 WAA |
7603 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7604 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7605 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7606 | rpc_put_task(task); |
7607 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7608 | if (status) |
7609 | return ERR_PTR(status); | |
7610 | return lseg; | |
b1f69b75 AA |
7611 | } |
7612 | ||
cbe82603 BH |
7613 | static void |
7614 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7615 | { | |
7616 | struct nfs4_layoutreturn *lrp = calldata; | |
7617 | ||
7618 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7619 | nfs41_setup_sequence(lrp->clp->cl_session, |
7620 | &lrp->args.seq_args, | |
7621 | &lrp->res.seq_res, | |
7622 | task); | |
cbe82603 BH |
7623 | } |
7624 | ||
7625 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7626 | { | |
7627 | struct nfs4_layoutreturn *lrp = calldata; | |
7628 | struct nfs_server *server; | |
7629 | ||
7630 | dprintk("--> %s\n", __func__); | |
7631 | ||
6ba7db34 | 7632 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7633 | return; |
7634 | ||
7635 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
7636 | switch (task->tk_status) { |
7637 | default: | |
7638 | task->tk_status = 0; | |
7639 | case 0: | |
7640 | break; | |
7641 | case -NFS4ERR_DELAY: | |
7642 | if (nfs4_async_handle_error(task, server, NULL) != -EAGAIN) | |
7643 | break; | |
d00c5d43 | 7644 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7645 | return; |
7646 | } | |
cbe82603 BH |
7647 | dprintk("<-- %s\n", __func__); |
7648 | } | |
7649 | ||
7650 | static void nfs4_layoutreturn_release(void *calldata) | |
7651 | { | |
7652 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7653 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
7654 | |
7655 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7656 | spin_lock(&lo->plh_inode->i_lock); |
7657 | if (lrp->res.lrs_present) | |
7658 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
7659 | lo->plh_block_lgets--; | |
7660 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 7661 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
7662 | kfree(calldata); |
7663 | dprintk("<-- %s\n", __func__); | |
7664 | } | |
7665 | ||
7666 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7667 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7668 | .rpc_call_done = nfs4_layoutreturn_done, | |
7669 | .rpc_release = nfs4_layoutreturn_release, | |
7670 | }; | |
7671 | ||
7672 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
7673 | { | |
7674 | struct rpc_task *task; | |
7675 | struct rpc_message msg = { | |
7676 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
7677 | .rpc_argp = &lrp->args, | |
7678 | .rpc_resp = &lrp->res, | |
9556000d | 7679 | .rpc_cred = lrp->cred, |
cbe82603 BH |
7680 | }; |
7681 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 7682 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
7683 | .rpc_message = &msg, |
7684 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
7685 | .callback_data = lrp, | |
7686 | }; | |
7687 | int status; | |
7688 | ||
7689 | dprintk("--> %s\n", __func__); | |
a9c92d6b | 7690 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
7691 | task = rpc_run_task(&task_setup_data); |
7692 | if (IS_ERR(task)) | |
7693 | return PTR_ERR(task); | |
7694 | status = task->tk_status; | |
1037e6ea | 7695 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
7696 | dprintk("<-- %s status=%d\n", __func__, status); |
7697 | rpc_put_task(task); | |
7698 | return status; | |
7699 | } | |
7700 | ||
7f11d8d3 AA |
7701 | /* |
7702 | * Retrieve the list of Data Server devices from the MDS. | |
7703 | */ | |
7704 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
7705 | const struct nfs_fh *fh, | |
7706 | struct pnfs_devicelist *devlist) | |
7707 | { | |
7708 | struct nfs4_getdevicelist_args args = { | |
7709 | .fh = fh, | |
7710 | .layoutclass = server->pnfs_curr_ld->id, | |
7711 | }; | |
7712 | struct nfs4_getdevicelist_res res = { | |
7713 | .devlist = devlist, | |
7714 | }; | |
7715 | struct rpc_message msg = { | |
7716 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
7717 | .rpc_argp = &args, | |
7718 | .rpc_resp = &res, | |
7719 | }; | |
7720 | int status; | |
7721 | ||
7722 | dprintk("--> %s\n", __func__); | |
7723 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
7724 | &res.seq_res, 0); | |
7725 | dprintk("<-- %s status=%d\n", __func__, status); | |
7726 | return status; | |
7727 | } | |
7728 | ||
7729 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
7730 | const struct nfs_fh *fh, | |
7731 | struct pnfs_devicelist *devlist) | |
7732 | { | |
7733 | struct nfs4_exception exception = { }; | |
7734 | int err; | |
7735 | ||
7736 | do { | |
7737 | err = nfs4_handle_exception(server, | |
7738 | _nfs4_getdevicelist(server, fh, devlist), | |
7739 | &exception); | |
7740 | } while (exception.retry); | |
7741 | ||
7742 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
7743 | err, devlist->num_devs); | |
7744 | ||
7745 | return err; | |
7746 | } | |
7747 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
7748 | ||
b1f69b75 | 7749 | static int |
cd5875fe TM |
7750 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7751 | struct pnfs_device *pdev, | |
7752 | struct rpc_cred *cred) | |
b1f69b75 AA |
7753 | { |
7754 | struct nfs4_getdeviceinfo_args args = { | |
7755 | .pdev = pdev, | |
7756 | }; | |
7757 | struct nfs4_getdeviceinfo_res res = { | |
7758 | .pdev = pdev, | |
7759 | }; | |
7760 | struct rpc_message msg = { | |
7761 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
7762 | .rpc_argp = &args, | |
7763 | .rpc_resp = &res, | |
cd5875fe | 7764 | .rpc_cred = cred, |
b1f69b75 AA |
7765 | }; |
7766 | int status; | |
7767 | ||
7768 | dprintk("--> %s\n", __func__); | |
7c513058 | 7769 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
7770 | dprintk("<-- %s status=%d\n", __func__, status); |
7771 | ||
7772 | return status; | |
7773 | } | |
7774 | ||
cd5875fe TM |
7775 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
7776 | struct pnfs_device *pdev, | |
7777 | struct rpc_cred *cred) | |
b1f69b75 AA |
7778 | { |
7779 | struct nfs4_exception exception = { }; | |
7780 | int err; | |
7781 | ||
7782 | do { | |
7783 | err = nfs4_handle_exception(server, | |
cd5875fe | 7784 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
7785 | &exception); |
7786 | } while (exception.retry); | |
7787 | return err; | |
7788 | } | |
7789 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
7790 | ||
863a3c6c AA |
7791 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
7792 | { | |
7793 | struct nfs4_layoutcommit_data *data = calldata; | |
7794 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 7795 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 7796 | |
d9afbd1b TM |
7797 | nfs41_setup_sequence(session, |
7798 | &data->args.seq_args, | |
7799 | &data->res.seq_res, | |
7800 | task); | |
863a3c6c AA |
7801 | } |
7802 | ||
7803 | static void | |
7804 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
7805 | { | |
7806 | struct nfs4_layoutcommit_data *data = calldata; | |
7807 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
7808 | ||
6ba7db34 | 7809 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
7810 | return; |
7811 | ||
7812 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
7813 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
7814 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
7815 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
7816 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 7817 | task->tk_status = 0; |
e59d27e0 | 7818 | case 0: |
e59d27e0 TM |
7819 | break; |
7820 | default: | |
7821 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
7822 | rpc_restart_call_prepare(task); | |
7823 | return; | |
7824 | } | |
7825 | } | |
863a3c6c AA |
7826 | } |
7827 | ||
7828 | static void nfs4_layoutcommit_release(void *calldata) | |
7829 | { | |
7830 | struct nfs4_layoutcommit_data *data = calldata; | |
7831 | ||
db29c089 | 7832 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
7833 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
7834 | data->res.fattr); | |
863a3c6c AA |
7835 | put_rpccred(data->cred); |
7836 | kfree(data); | |
7837 | } | |
7838 | ||
7839 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
7840 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
7841 | .rpc_call_done = nfs4_layoutcommit_done, | |
7842 | .rpc_release = nfs4_layoutcommit_release, | |
7843 | }; | |
7844 | ||
7845 | int | |
ef311537 | 7846 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
7847 | { |
7848 | struct rpc_message msg = { | |
7849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
7850 | .rpc_argp = &data->args, | |
7851 | .rpc_resp = &data->res, | |
7852 | .rpc_cred = data->cred, | |
7853 | }; | |
7854 | struct rpc_task_setup task_setup_data = { | |
7855 | .task = &data->task, | |
7856 | .rpc_client = NFS_CLIENT(data->args.inode), | |
7857 | .rpc_message = &msg, | |
7858 | .callback_ops = &nfs4_layoutcommit_ops, | |
7859 | .callback_data = data, | |
7860 | .flags = RPC_TASK_ASYNC, | |
7861 | }; | |
7862 | struct rpc_task *task; | |
7863 | int status = 0; | |
7864 | ||
7865 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
7866 | "lbw: %llu inode %lu\n", | |
7867 | data->task.tk_pid, sync, | |
7868 | data->args.lastbytewritten, | |
7869 | data->args.inode->i_ino); | |
7870 | ||
a9c92d6b | 7871 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
7872 | task = rpc_run_task(&task_setup_data); |
7873 | if (IS_ERR(task)) | |
7874 | return PTR_ERR(task); | |
ef311537 | 7875 | if (sync == false) |
863a3c6c AA |
7876 | goto out; |
7877 | status = nfs4_wait_for_completion_rpc_task(task); | |
7878 | if (status != 0) | |
7879 | goto out; | |
7880 | status = task->tk_status; | |
1037e6ea | 7881 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
7882 | out: |
7883 | dprintk("%s: status %d\n", __func__, status); | |
7884 | rpc_put_task(task); | |
7885 | return status; | |
7886 | } | |
fca78d6d | 7887 | |
97431204 AA |
7888 | /** |
7889 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
7890 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
7891 | */ | |
fca78d6d BS |
7892 | static int |
7893 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
7894 | struct nfs_fsinfo *info, |
7895 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
7896 | { |
7897 | struct nfs41_secinfo_no_name_args args = { | |
7898 | .style = SECINFO_STYLE_CURRENT_FH, | |
7899 | }; | |
7900 | struct nfs4_secinfo_res res = { | |
7901 | .flavors = flavors, | |
7902 | }; | |
7903 | struct rpc_message msg = { | |
7904 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
7905 | .rpc_argp = &args, | |
7906 | .rpc_resp = &res, | |
7907 | }; | |
b1b3e136 | 7908 | struct rpc_clnt *clnt = server->client; |
7cb852df | 7909 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
7910 | int status; |
7911 | ||
7912 | if (use_integrity) { | |
7913 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
7914 | cred = nfs4_get_clid_cred(server->nfs_client); |
7915 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
7916 | } |
7917 | ||
7918 | dprintk("--> %s\n", __func__); | |
7919 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
7920 | &res.seq_res, 0); | |
7921 | dprintk("<-- %s status=%d\n", __func__, status); | |
7922 | ||
7cb852df WAA |
7923 | if (cred) |
7924 | put_rpccred(cred); | |
b1b3e136 WAA |
7925 | |
7926 | return status; | |
fca78d6d BS |
7927 | } |
7928 | ||
7929 | static int | |
7930 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
7931 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
7932 | { | |
7933 | struct nfs4_exception exception = { }; | |
7934 | int err; | |
7935 | do { | |
b1b3e136 WAA |
7936 | /* first try using integrity protection */ |
7937 | err = -NFS4ERR_WRONGSEC; | |
7938 | ||
7939 | /* try to use integrity protection with machine cred */ | |
7940 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
7941 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7942 | flavors, true); | |
7943 | ||
7944 | /* | |
7945 | * if unable to use integrity protection, or SECINFO with | |
7946 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
7947 | * disallowed by spec, but exists in deployed servers) use | |
7948 | * the current filesystem's rpc_client and the user cred. | |
7949 | */ | |
7950 | if (err == -NFS4ERR_WRONGSEC) | |
7951 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
7952 | flavors, false); | |
7953 | ||
fca78d6d BS |
7954 | switch (err) { |
7955 | case 0: | |
7956 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 7957 | case -ENOTSUPP: |
05e9cfb4 | 7958 | goto out; |
fca78d6d BS |
7959 | default: |
7960 | err = nfs4_handle_exception(server, err, &exception); | |
7961 | } | |
7962 | } while (exception.retry); | |
05e9cfb4 | 7963 | out: |
fca78d6d BS |
7964 | return err; |
7965 | } | |
7966 | ||
7967 | static int | |
7968 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
7969 | struct nfs_fsinfo *info) | |
7970 | { | |
7971 | int err; | |
7972 | struct page *page; | |
367156d9 | 7973 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 7974 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
7975 | struct nfs4_secinfo4 *secinfo; |
7976 | int i; | |
fca78d6d BS |
7977 | |
7978 | page = alloc_page(GFP_KERNEL); | |
7979 | if (!page) { | |
7980 | err = -ENOMEM; | |
7981 | goto out; | |
7982 | } | |
7983 | ||
7984 | flavors = page_address(page); | |
7985 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
7986 | ||
7987 | /* | |
7988 | * Fall back on "guess and check" method if | |
7989 | * the server doesn't support SECINFO_NO_NAME | |
7990 | */ | |
78b19bae | 7991 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
7992 | err = nfs4_find_root_sec(server, fhandle, info); |
7993 | goto out_freepage; | |
7994 | } | |
7995 | if (err) | |
7996 | goto out_freepage; | |
7997 | ||
58a8cf12 WAA |
7998 | for (i = 0; i < flavors->num_flavors; i++) { |
7999 | secinfo = &flavors->flavors[i]; | |
8000 | ||
8001 | switch (secinfo->flavor) { | |
8002 | case RPC_AUTH_NULL: | |
8003 | case RPC_AUTH_UNIX: | |
8004 | case RPC_AUTH_GSS: | |
8005 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8006 | &secinfo->flavor_info); | |
8007 | break; | |
8008 | default: | |
8009 | flavor = RPC_AUTH_MAXFLAVOR; | |
8010 | break; | |
8011 | } | |
8012 | ||
4d4b69dd WAA |
8013 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8014 | flavor = RPC_AUTH_MAXFLAVOR; | |
8015 | ||
58a8cf12 WAA |
8016 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8017 | err = nfs4_lookup_root_sec(server, fhandle, | |
8018 | info, flavor); | |
8019 | if (!err) | |
8020 | break; | |
8021 | } | |
8022 | } | |
8023 | ||
8024 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8025 | err = -EPERM; | |
fca78d6d BS |
8026 | |
8027 | out_freepage: | |
8028 | put_page(page); | |
8029 | if (err == -EACCES) | |
8030 | return -EPERM; | |
8031 | out: | |
8032 | return err; | |
8033 | } | |
1cab0652 | 8034 | |
ab7cb0df TM |
8035 | static int _nfs41_test_stateid(struct nfs_server *server, |
8036 | nfs4_stateid *stateid, | |
8037 | struct rpc_cred *cred) | |
7d974794 BS |
8038 | { |
8039 | int status; | |
8040 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8041 | .stateid = stateid, |
7d974794 BS |
8042 | }; |
8043 | struct nfs41_test_stateid_res res; | |
8044 | struct rpc_message msg = { | |
8045 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8046 | .rpc_argp = &args, | |
8047 | .rpc_resp = &res, | |
ab7cb0df | 8048 | .rpc_cred = cred, |
7d974794 | 8049 | }; |
3787d506 WAA |
8050 | struct rpc_clnt *rpc_client = server->client; |
8051 | ||
8052 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8053 | &rpc_client, &msg); | |
1cab0652 | 8054 | |
38527b15 | 8055 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8056 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8057 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8058 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8059 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8060 | if (status != NFS_OK) { |
8061 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8062 | return status; |
38527b15 CL |
8063 | } |
8064 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8065 | return -res.status; |
7d974794 BS |
8066 | } |
8067 | ||
38527b15 CL |
8068 | /** |
8069 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8070 | * | |
8071 | * @server: server / transport on which to perform the operation | |
8072 | * @stateid: state ID to test | |
ab7cb0df | 8073 | * @cred: credential |
38527b15 CL |
8074 | * |
8075 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8076 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8077 | * failed or the state ID is not currently valid. | |
8078 | */ | |
ab7cb0df TM |
8079 | static int nfs41_test_stateid(struct nfs_server *server, |
8080 | nfs4_stateid *stateid, | |
8081 | struct rpc_cred *cred) | |
7d974794 BS |
8082 | { |
8083 | struct nfs4_exception exception = { }; | |
8084 | int err; | |
8085 | do { | |
ab7cb0df | 8086 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8087 | if (err != -NFS4ERR_DELAY) |
8088 | break; | |
8089 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8090 | } while (exception.retry); |
8091 | return err; | |
8092 | } | |
9aeda35f | 8093 | |
7c1d5fae TM |
8094 | struct nfs_free_stateid_data { |
8095 | struct nfs_server *server; | |
8096 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8097 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8098 | }; |
8099 | ||
8100 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8101 | { | |
8102 | struct nfs_free_stateid_data *data = calldata; | |
8103 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8104 | &data->args.seq_args, | |
8105 | &data->res.seq_res, | |
8106 | task); | |
8107 | } | |
8108 | ||
8109 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8110 | { | |
8111 | struct nfs_free_stateid_data *data = calldata; | |
8112 | ||
8113 | nfs41_sequence_done(task, &data->res.seq_res); | |
8114 | ||
8115 | switch (task->tk_status) { | |
8116 | case -NFS4ERR_DELAY: | |
8117 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
8118 | rpc_restart_call_prepare(task); | |
8119 | } | |
8120 | } | |
8121 | ||
8122 | static void nfs41_free_stateid_release(void *calldata) | |
8123 | { | |
8124 | kfree(calldata); | |
8125 | } | |
8126 | ||
17f26b12 | 8127 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8128 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8129 | .rpc_call_done = nfs41_free_stateid_done, | |
8130 | .rpc_release = nfs41_free_stateid_release, | |
8131 | }; | |
8132 | ||
8133 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8134 | nfs4_stateid *stateid, | |
ab7cb0df | 8135 | struct rpc_cred *cred, |
7c1d5fae TM |
8136 | bool privileged) |
8137 | { | |
9aeda35f BS |
8138 | struct rpc_message msg = { |
8139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8140 | .rpc_cred = cred, |
9aeda35f | 8141 | }; |
7c1d5fae TM |
8142 | struct rpc_task_setup task_setup = { |
8143 | .rpc_client = server->client, | |
8144 | .rpc_message = &msg, | |
8145 | .callback_ops = &nfs41_free_stateid_ops, | |
8146 | .flags = RPC_TASK_ASYNC, | |
8147 | }; | |
8148 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8149 | |
3787d506 WAA |
8150 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8151 | &task_setup.rpc_client, &msg); | |
8152 | ||
38527b15 | 8153 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8154 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8155 | if (!data) | |
8156 | return ERR_PTR(-ENOMEM); | |
8157 | data->server = server; | |
8158 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8159 | ||
8160 | task_setup.callback_data = data; | |
8161 | ||
8162 | msg.rpc_argp = &data->args; | |
8163 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8164 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8165 | if (privileged) |
8166 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8167 | ||
8168 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8169 | } |
8170 | ||
38527b15 CL |
8171 | /** |
8172 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8173 | * | |
8174 | * @server: server / transport on which to perform the operation | |
8175 | * @stateid: state ID to release | |
ab7cb0df | 8176 | * @cred: credential |
38527b15 CL |
8177 | * |
8178 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8179 | * negative NFS4ERR value is returned. | |
8180 | */ | |
ab7cb0df TM |
8181 | static int nfs41_free_stateid(struct nfs_server *server, |
8182 | nfs4_stateid *stateid, | |
8183 | struct rpc_cred *cred) | |
9aeda35f | 8184 | { |
7c1d5fae TM |
8185 | struct rpc_task *task; |
8186 | int ret; | |
8187 | ||
ab7cb0df | 8188 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8189 | if (IS_ERR(task)) |
8190 | return PTR_ERR(task); | |
8191 | ret = rpc_wait_for_completion_task(task); | |
8192 | if (!ret) | |
8193 | ret = task->tk_status; | |
8194 | rpc_put_task(task); | |
8195 | return ret; | |
9aeda35f | 8196 | } |
36281caa | 8197 | |
c8b2d0bf TM |
8198 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
8199 | { | |
8200 | struct rpc_task *task; | |
ab7cb0df | 8201 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8202 | |
ab7cb0df | 8203 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8204 | nfs4_free_lock_state(server, lsp); |
8205 | if (IS_ERR(task)) | |
8206 | return PTR_ERR(task); | |
8207 | rpc_put_task(task); | |
8208 | return 0; | |
8209 | } | |
8210 | ||
36281caa TM |
8211 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8212 | const nfs4_stateid *s2) | |
8213 | { | |
2d2f24ad | 8214 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8215 | return false; |
8216 | ||
2d2f24ad | 8217 | if (s1->seqid == s2->seqid) |
36281caa | 8218 | return true; |
2d2f24ad | 8219 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8220 | return true; |
8221 | ||
8222 | return false; | |
8223 | } | |
8224 | ||
557134a3 AA |
8225 | #endif /* CONFIG_NFS_V4_1 */ |
8226 | ||
36281caa TM |
8227 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8228 | const nfs4_stateid *s2) | |
8229 | { | |
f597c537 | 8230 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8231 | } |
8232 | ||
8233 | ||
17280175 | 8234 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8235 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8236 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8237 | .recover_open = nfs4_open_reclaim, |
8238 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8239 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8240 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8241 | }; |
8242 | ||
591d71cb | 8243 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8244 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8245 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8246 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8247 | .recover_open = nfs4_open_reclaim, | |
8248 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8249 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8250 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8251 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8252 | }; |
8253 | #endif /* CONFIG_NFS_V4_1 */ | |
8254 | ||
17280175 | 8255 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8256 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8257 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
8258 | .recover_open = nfs4_open_expired, | |
8259 | .recover_lock = nfs4_lock_expired, | |
8260 | .establish_clid = nfs4_init_clientid, | |
8261 | }; | |
8262 | ||
8263 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8264 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8265 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8266 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8267 | .recover_open = nfs41_open_expired, |
8268 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8269 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8270 | }; |
591d71cb | 8271 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8272 | |
17280175 | 8273 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8274 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8275 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8276 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8277 | }; |
8278 | ||
8279 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8280 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8281 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8282 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8283 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8284 | }; |
8285 | #endif | |
8286 | ||
ec011fe8 | 8287 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8288 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8289 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8290 | }; |
8291 | ||
8292 | #if defined(CONFIG_NFS_V4_1) | |
8293 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8294 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8295 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8296 | }; |
8297 | #endif /* CONFIG_NFS_V4_1 */ | |
8298 | ||
97dc1359 TM |
8299 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8300 | .minor_version = 0, | |
39c6daae TM |
8301 | .init_caps = NFS_CAP_READDIRPLUS |
8302 | | NFS_CAP_ATOMIC_OPEN | |
8303 | | NFS_CAP_CHANGE_ATTR | |
8304 | | NFS_CAP_POSIX_LOCK, | |
abf79bb3 CL |
8305 | .init_client = nfs40_init_client, |
8306 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8307 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8308 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8309 | .free_lock_state = nfs4_release_lockowner, |
9915ea7e | 8310 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8311 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8312 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8313 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8314 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8315 | }; |
8316 | ||
8317 | #if defined(CONFIG_NFS_V4_1) | |
8318 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
8319 | .minor_version = 1, | |
39c6daae TM |
8320 | .init_caps = NFS_CAP_READDIRPLUS |
8321 | | NFS_CAP_ATOMIC_OPEN | |
8322 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 8323 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
8324 | | NFS_CAP_STATEID_NFSV41 |
8325 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
8326 | .init_client = nfs41_init_client, |
8327 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8328 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8329 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8330 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8331 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8332 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8333 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8334 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8335 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8336 | }; |
8337 | #endif | |
8338 | ||
42c2c424 SD |
8339 | #if defined(CONFIG_NFS_V4_2) |
8340 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8341 | .minor_version = 2, | |
7017310a BS |
8342 | .init_caps = NFS_CAP_READDIRPLUS |
8343 | | NFS_CAP_ATOMIC_OPEN | |
8344 | | NFS_CAP_CHANGE_ATTR | |
8345 | | NFS_CAP_POSIX_LOCK | |
8346 | | NFS_CAP_STATEID_NFSV41 | |
8347 | | NFS_CAP_ATOMIC_OPEN_V1, | |
abf79bb3 CL |
8348 | .init_client = nfs41_init_client, |
8349 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8350 | .match_stateid = nfs41_match_stateid, |
8351 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8352 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8353 | .call_sync_ops = &nfs41_call_sync_ops, |
42c2c424 SD |
8354 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8355 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8356 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
8357 | }; | |
8358 | #endif | |
8359 | ||
97dc1359 TM |
8360 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8361 | [0] = &nfs_v4_0_minor_ops, | |
8362 | #if defined(CONFIG_NFS_V4_1) | |
8363 | [1] = &nfs_v4_1_minor_ops, | |
8364 | #endif | |
42c2c424 SD |
8365 | #if defined(CONFIG_NFS_V4_2) |
8366 | [2] = &nfs_v4_2_minor_ops, | |
8367 | #endif | |
97dc1359 TM |
8368 | }; |
8369 | ||
17f26b12 | 8370 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8371 | .create = nfs_create, |
8372 | .lookup = nfs_lookup, | |
8373 | .atomic_open = nfs_atomic_open, | |
8374 | .link = nfs_link, | |
8375 | .unlink = nfs_unlink, | |
8376 | .symlink = nfs_symlink, | |
8377 | .mkdir = nfs_mkdir, | |
8378 | .rmdir = nfs_rmdir, | |
8379 | .mknod = nfs_mknod, | |
8380 | .rename = nfs_rename, | |
8381 | .permission = nfs_permission, | |
8382 | .getattr = nfs_getattr, | |
8383 | .setattr = nfs_setattr, | |
8384 | .getxattr = generic_getxattr, | |
8385 | .setxattr = generic_setxattr, | |
8386 | .listxattr = generic_listxattr, | |
8387 | .removexattr = generic_removexattr, | |
8388 | }; | |
8389 | ||
92e1d5be | 8390 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8391 | .permission = nfs_permission, |
8392 | .getattr = nfs_getattr, | |
8393 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8394 | .getxattr = generic_getxattr, |
8395 | .setxattr = generic_setxattr, | |
8396 | .listxattr = generic_listxattr, | |
8397 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8398 | }; |
8399 | ||
509de811 | 8400 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8401 | .version = 4, /* protocol version */ |
8402 | .dentry_ops = &nfs4_dentry_operations, | |
8403 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8404 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8405 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8406 | .getroot = nfs4_proc_get_root, |
281cad46 | 8407 | .submount = nfs4_submount, |
ff9099f2 | 8408 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8409 | .getattr = nfs4_proc_getattr, |
8410 | .setattr = nfs4_proc_setattr, | |
8411 | .lookup = nfs4_proc_lookup, | |
8412 | .access = nfs4_proc_access, | |
8413 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8414 | .create = nfs4_proc_create, |
8415 | .remove = nfs4_proc_remove, | |
8416 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8417 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8418 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8419 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8420 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8421 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8422 | .link = nfs4_proc_link, |
8423 | .symlink = nfs4_proc_symlink, | |
8424 | .mkdir = nfs4_proc_mkdir, | |
8425 | .rmdir = nfs4_proc_remove, | |
8426 | .readdir = nfs4_proc_readdir, | |
8427 | .mknod = nfs4_proc_mknod, | |
8428 | .statfs = nfs4_proc_statfs, | |
8429 | .fsinfo = nfs4_proc_fsinfo, | |
8430 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8431 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8432 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8433 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8434 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8435 | .read_done = nfs4_read_done, |
1da177e4 | 8436 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8437 | .write_done = nfs4_write_done, |
1da177e4 | 8438 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8439 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8440 | .commit_done = nfs4_commit_done, |
1da177e4 | 8441 | .lock = nfs4_proc_lock, |
e50a1c2e | 8442 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8443 | .close_context = nfs4_close_context, |
2b484297 | 8444 | .open_context = nfs4_atomic_open, |
011e2a7f | 8445 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8446 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8447 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8448 | .init_client = nfs4_init_client, |
cdb7eced | 8449 | .free_client = nfs4_free_client, |
1179acc6 BS |
8450 | .create_server = nfs4_create_server, |
8451 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8452 | }; |
8453 | ||
64c2ce8b AK |
8454 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8455 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8456 | .list = nfs4_xattr_list_nfs4_acl, | |
8457 | .get = nfs4_xattr_get_nfs4_acl, | |
8458 | .set = nfs4_xattr_set_nfs4_acl, | |
8459 | }; | |
8460 | ||
8461 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8462 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8463 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8464 | &nfs4_xattr_nfs4_label_handler, | |
8465 | #endif | |
64c2ce8b AK |
8466 | NULL |
8467 | }; | |
8468 | ||
1da177e4 LT |
8469 | /* |
8470 | * Local variables: | |
8471 | * c-basic-offset: 8 | |
8472 | * End: | |
8473 | */ |