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> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.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" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
81934ddb | 81 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
82 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
86 | struct nfs4_state *state, struct nfs4_label *ilabel, |
87 | struct nfs4_label *olabel); | |
f062eb6c | 88 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
89 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
90 | struct rpc_cred *); | |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
92 | struct rpc_cred *); | |
f062eb6c | 93 | #endif |
aa9c2669 DQ |
94 | |
95 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
96 | static inline struct nfs4_label * | |
97 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
98 | struct iattr *sattr, struct nfs4_label *label) | |
99 | { | |
100 | int err; | |
101 | ||
102 | if (label == NULL) | |
103 | return NULL; | |
104 | ||
105 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
106 | return NULL; | |
107 | ||
aa9c2669 DQ |
108 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
109 | &dentry->d_name, (void **)&label->label, &label->len); | |
110 | if (err == 0) | |
111 | return label; | |
112 | ||
113 | return NULL; | |
114 | } | |
115 | static inline void | |
116 | nfs4_label_release_security(struct nfs4_label *label) | |
117 | { | |
118 | if (label) | |
119 | security_release_secctx(label->label, label->len); | |
120 | } | |
121 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
122 | { | |
123 | if (label) | |
124 | return server->attr_bitmask; | |
125 | ||
126 | return server->attr_bitmask_nl; | |
127 | } | |
128 | #else | |
129 | static inline struct nfs4_label * | |
130 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
131 | struct iattr *sattr, struct nfs4_label *l) | |
132 | { return NULL; } | |
133 | static inline void | |
134 | nfs4_label_release_security(struct nfs4_label *label) | |
135 | { return; } | |
136 | static inline u32 * | |
137 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
138 | { return server->attr_bitmask; } | |
139 | #endif | |
140 | ||
1da177e4 | 141 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 142 | static int nfs4_map_errors(int err) |
1da177e4 | 143 | { |
52567b03 TM |
144 | if (err >= -1000) |
145 | return err; | |
146 | switch (err) { | |
147 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
148 | case -NFS4ERR_LAYOUTTRYLATER: |
149 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 150 | return -EREMOTEIO; |
7ebb9315 | 151 | case -NFS4ERR_WRONGSEC: |
8897538e | 152 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 153 | return -EPERM; |
3ddeb7c5 TM |
154 | case -NFS4ERR_BADOWNER: |
155 | case -NFS4ERR_BADNAME: | |
156 | return -EINVAL; | |
fb13bfa7 TM |
157 | case -NFS4ERR_SHARE_DENIED: |
158 | return -EACCES; | |
f25efd85 SD |
159 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
160 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
161 | case -NFS4ERR_FILE_OPEN: |
162 | return -EBUSY; | |
52567b03 | 163 | default: |
1da177e4 | 164 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 165 | __func__, -err); |
52567b03 | 166 | break; |
1da177e4 | 167 | } |
52567b03 | 168 | return -EIO; |
1da177e4 LT |
169 | } |
170 | ||
171 | /* | |
172 | * This is our standard bitmap for GETATTR requests. | |
173 | */ | |
1549210f | 174 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
175 | FATTR4_WORD0_TYPE |
176 | | FATTR4_WORD0_CHANGE | |
177 | | FATTR4_WORD0_SIZE | |
178 | | FATTR4_WORD0_FSID | |
179 | | FATTR4_WORD0_FILEID, | |
180 | FATTR4_WORD1_MODE | |
181 | | FATTR4_WORD1_NUMLINKS | |
182 | | FATTR4_WORD1_OWNER | |
183 | | FATTR4_WORD1_OWNER_GROUP | |
184 | | FATTR4_WORD1_RAWDEV | |
185 | | FATTR4_WORD1_SPACE_USED | |
186 | | FATTR4_WORD1_TIME_ACCESS | |
187 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
188 | | FATTR4_WORD1_TIME_MODIFY |
189 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
190 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
191 | FATTR4_WORD2_SECURITY_LABEL | |
192 | #endif | |
1da177e4 LT |
193 | }; |
194 | ||
1549210f TM |
195 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
196 | FATTR4_WORD0_TYPE | |
197 | | FATTR4_WORD0_CHANGE | |
198 | | FATTR4_WORD0_SIZE | |
199 | | FATTR4_WORD0_FSID | |
200 | | FATTR4_WORD0_FILEID, | |
201 | FATTR4_WORD1_MODE | |
202 | | FATTR4_WORD1_NUMLINKS | |
203 | | FATTR4_WORD1_OWNER | |
204 | | FATTR4_WORD1_OWNER_GROUP | |
205 | | FATTR4_WORD1_RAWDEV | |
206 | | FATTR4_WORD1_SPACE_USED | |
207 | | FATTR4_WORD1_TIME_ACCESS | |
208 | | FATTR4_WORD1_TIME_METADATA | |
209 | | FATTR4_WORD1_TIME_MODIFY, | |
210 | FATTR4_WORD2_MDSTHRESHOLD | |
211 | }; | |
212 | ||
e23008ec AA |
213 | static const u32 nfs4_open_noattr_bitmap[3] = { |
214 | FATTR4_WORD0_TYPE | |
215 | | FATTR4_WORD0_CHANGE | |
216 | | FATTR4_WORD0_FILEID, | |
217 | }; | |
218 | ||
a09df2ca | 219 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
220 | FATTR4_WORD0_FILES_AVAIL |
221 | | FATTR4_WORD0_FILES_FREE | |
222 | | FATTR4_WORD0_FILES_TOTAL, | |
223 | FATTR4_WORD1_SPACE_AVAIL | |
224 | | FATTR4_WORD1_SPACE_FREE | |
225 | | FATTR4_WORD1_SPACE_TOTAL | |
226 | }; | |
227 | ||
a09df2ca | 228 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
229 | FATTR4_WORD0_MAXLINK |
230 | | FATTR4_WORD0_MAXNAME, | |
231 | 0 | |
232 | }; | |
233 | ||
dae100c2 | 234 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
235 | | FATTR4_WORD0_MAXREAD |
236 | | FATTR4_WORD0_MAXWRITE | |
237 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 238 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
239 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
240 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
2a92ee92 | 241 | | FATTR4_WORD2_CLONE_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 */ | |
2b0143b5 | 298 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
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 */ | |
2b0143b5 | 310 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
311 | |
312 | readdir->pgbase = (char *)p - (char *)start; | |
313 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 314 | kunmap_atomic(start); |
1da177e4 LT |
315 | } |
316 | ||
8478eaa1 N |
317 | static long nfs4_update_delay(long *timeout) |
318 | { | |
319 | long ret; | |
320 | if (!timeout) | |
321 | return NFS4_POLL_RETRY_MAX; | |
322 | if (*timeout <= 0) | |
323 | *timeout = NFS4_POLL_RETRY_MIN; | |
324 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
325 | *timeout = NFS4_POLL_RETRY_MAX; | |
326 | ret = *timeout; | |
327 | *timeout <<= 1; | |
328 | return ret; | |
329 | } | |
330 | ||
65de872e TM |
331 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
332 | { | |
333 | int res = 0; | |
334 | ||
335 | might_sleep(); | |
336 | ||
8478eaa1 N |
337 | freezable_schedule_timeout_killable_unsafe( |
338 | nfs4_update_delay(timeout)); | |
65de872e TM |
339 | if (fatal_signal_pending(current)) |
340 | res = -ERESTARTSYS; | |
65de872e TM |
341 | return res; |
342 | } | |
343 | ||
344 | /* This is the error handling routine for processes that are allowed | |
345 | * to sleep. | |
346 | */ | |
b3c2aa07 TM |
347 | static int nfs4_do_handle_exception(struct nfs_server *server, |
348 | int errorcode, struct nfs4_exception *exception) | |
65de872e TM |
349 | { |
350 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 351 | struct nfs4_state *state = exception->state; |
3114ea7a | 352 | struct inode *inode = exception->inode; |
65de872e TM |
353 | int ret = errorcode; |
354 | ||
b3c2aa07 TM |
355 | exception->delay = 0; |
356 | exception->recovering = 0; | |
65de872e TM |
357 | exception->retry = 0; |
358 | switch(errorcode) { | |
359 | case 0: | |
360 | return 0; | |
3114ea7a | 361 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
362 | case -NFS4ERR_DELEG_REVOKED: |
363 | case -NFS4ERR_ADMIN_REVOKED: | |
364 | case -NFS4ERR_BAD_STATEID: | |
4816fdad TM |
365 | if (inode && nfs_async_inode_return_delegation(inode, |
366 | NULL) == 0) | |
367 | goto wait_on_recovery; | |
3114ea7a TM |
368 | if (state == NULL) |
369 | break; | |
5d422301 TM |
370 | ret = nfs4_schedule_stateid_recovery(server, state); |
371 | if (ret < 0) | |
372 | break; | |
3114ea7a | 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 | 413 | case -NFS4ERR_DELAY: |
2598ed34 TM |
414 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
415 | case -NFS4ERR_GRACE: | |
b3c2aa07 TM |
416 | exception->delay = 1; |
417 | return 0; | |
418 | ||
a8a4ae3a | 419 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
420 | case -NFS4ERR_OLD_STATEID: |
421 | exception->retry = 1; | |
b064eca2 TM |
422 | break; |
423 | case -NFS4ERR_BADOWNER: | |
424 | /* The following works around a Linux server bug! */ | |
425 | case -NFS4ERR_BADNAME: | |
426 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
427 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
428 | exception->retry = 1; | |
429 | printk(KERN_WARNING "NFS: v4 server %s " | |
430 | "does not accept raw " | |
431 | "uid/gids. " | |
432 | "Reenabling the idmapper.\n", | |
433 | server->nfs_client->cl_hostname); | |
434 | } | |
65de872e TM |
435 | } |
436 | /* We failed to handle the error */ | |
437 | return nfs4_map_errors(ret); | |
0400a6b0 | 438 | wait_on_recovery: |
b3c2aa07 TM |
439 | exception->recovering = 1; |
440 | return 0; | |
441 | } | |
442 | ||
443 | /* This is the error handling routine for processes that are allowed | |
444 | * to sleep. | |
445 | */ | |
446 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
447 | { | |
448 | struct nfs_client *clp = server->nfs_client; | |
449 | int ret; | |
450 | ||
451 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
452 | if (exception->delay) { | |
453 | ret = nfs4_delay(server->client, &exception->timeout); | |
454 | goto out_retry; | |
455 | } | |
456 | if (exception->recovering) { | |
457 | ret = nfs4_wait_clnt_recover(clp); | |
458 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
459 | return -EIO; | |
460 | goto out_retry; | |
461 | } | |
462 | return ret; | |
463 | out_retry: | |
a2c0b9e2 TM |
464 | if (ret == 0) |
465 | exception->retry = 1; | |
466 | return ret; | |
65de872e TM |
467 | } |
468 | ||
037fc980 TM |
469 | static int |
470 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
471 | int errorcode, struct nfs4_exception *exception) | |
472 | { | |
473 | struct nfs_client *clp = server->nfs_client; | |
474 | int ret; | |
475 | ||
476 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
477 | if (exception->delay) { | |
478 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
479 | goto out_retry; | |
480 | } | |
481 | if (exception->recovering) { | |
482 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
483 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
484 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
485 | goto out_retry; | |
486 | } | |
519ae255 | 487 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
488 | ret = -EIO; |
489 | return ret; | |
490 | out_retry: | |
a2c0b9e2 TM |
491 | if (ret == 0) |
492 | exception->retry = 1; | |
493 | return ret; | |
65de872e TM |
494 | } |
495 | ||
037fc980 TM |
496 | static int |
497 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, | |
498 | struct nfs4_state *state, long *timeout) | |
499 | { | |
500 | struct nfs4_exception exception = { | |
501 | .state = state, | |
502 | }; | |
503 | ||
504 | if (task->tk_status >= 0) | |
505 | return 0; | |
506 | if (timeout) | |
507 | exception.timeout = *timeout; | |
508 | task->tk_status = nfs4_async_handle_exception(task, server, | |
509 | task->tk_status, | |
510 | &exception); | |
511 | if (exception.delay && timeout) | |
512 | *timeout = exception.timeout; | |
513 | if (exception.retry) | |
514 | return -EAGAIN; | |
515 | return 0; | |
516 | } | |
517 | ||
a5250def WAA |
518 | /* |
519 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
520 | * or 'false' otherwise. | |
521 | */ | |
522 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
523 | { | |
524 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
525 | ||
526 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
527 | flavor == RPC_AUTH_GSS_KRB5P) | |
528 | return true; | |
529 | ||
530 | return false; | |
531 | } | |
65de872e | 532 | |
452e9352 | 533 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 534 | { |
1da177e4 LT |
535 | spin_lock(&clp->cl_lock); |
536 | if (time_before(clp->cl_last_renewal,timestamp)) | |
537 | clp->cl_last_renewal = timestamp; | |
538 | spin_unlock(&clp->cl_lock); | |
539 | } | |
540 | ||
452e9352 TM |
541 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
542 | { | |
be824167 TM |
543 | struct nfs_client *clp = server->nfs_client; |
544 | ||
545 | if (!nfs4_has_session(clp)) | |
546 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
547 | } |
548 | ||
2a3eb2b9 CL |
549 | struct nfs4_call_sync_data { |
550 | const struct nfs_server *seq_server; | |
551 | struct nfs4_sequence_args *seq_args; | |
552 | struct nfs4_sequence_res *seq_res; | |
553 | }; | |
554 | ||
be3a5d23 TM |
555 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
556 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
557 | { |
558 | args->sa_slot = NULL; | |
559 | args->sa_cache_this = cache_reply; | |
560 | args->sa_privileged = 0; | |
561 | ||
562 | res->sr_slot = NULL; | |
563 | } | |
564 | ||
565 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
566 | { | |
567 | args->sa_privileged = 1; | |
568 | } | |
569 | ||
cb04ad2a PT |
570 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
571 | struct nfs4_sequence_args *args, | |
572 | struct nfs4_sequence_res *res, | |
573 | struct rpc_task *task) | |
3bd2384a | 574 | { |
3bd2384a CL |
575 | struct nfs4_slot *slot; |
576 | ||
577 | /* slot already allocated? */ | |
578 | if (res->sr_slot != NULL) | |
579 | goto out_start; | |
580 | ||
581 | spin_lock(&tbl->slot_tbl_lock); | |
582 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
583 | goto out_sleep; | |
584 | ||
585 | slot = nfs4_alloc_slot(tbl); | |
586 | if (IS_ERR(slot)) { | |
587 | if (slot == ERR_PTR(-ENOMEM)) | |
588 | task->tk_timeout = HZ >> 2; | |
589 | goto out_sleep; | |
590 | } | |
591 | spin_unlock(&tbl->slot_tbl_lock); | |
592 | ||
593 | args->sa_slot = slot; | |
594 | res->sr_slot = slot; | |
595 | ||
596 | out_start: | |
597 | rpc_call_start(task); | |
598 | return 0; | |
599 | ||
600 | out_sleep: | |
601 | if (args->sa_privileged) | |
602 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
603 | NULL, RPC_PRIORITY_PRIVILEGED); | |
604 | else | |
605 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
606 | spin_unlock(&tbl->slot_tbl_lock); | |
607 | return -EAGAIN; | |
608 | } | |
cb04ad2a | 609 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
610 | |
611 | static int nfs40_sequence_done(struct rpc_task *task, | |
612 | struct nfs4_sequence_res *res) | |
613 | { | |
614 | struct nfs4_slot *slot = res->sr_slot; | |
615 | struct nfs4_slot_table *tbl; | |
616 | ||
cab92c19 | 617 | if (slot == NULL) |
3bd2384a CL |
618 | goto out; |
619 | ||
620 | tbl = slot->table; | |
621 | spin_lock(&tbl->slot_tbl_lock); | |
622 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
623 | nfs4_free_slot(tbl, slot); | |
624 | spin_unlock(&tbl->slot_tbl_lock); | |
625 | ||
626 | res->sr_slot = NULL; | |
627 | out: | |
628 | return 1; | |
629 | } | |
630 | ||
cccef3b9 AA |
631 | #if defined(CONFIG_NFS_V4_1) |
632 | ||
d185a334 | 633 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 634 | { |
e3725ec0 | 635 | struct nfs4_session *session; |
13615871 | 636 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 637 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 638 | bool send_new_highest_used_slotid = false; |
13615871 | 639 | |
a13ce7c6 | 640 | tbl = slot->table; |
e3725ec0 | 641 | session = tbl->session; |
ea028ac9 | 642 | |
35dc1d74 | 643 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
644 | /* Be nice to the server: try to ensure that the last transmitted |
645 | * value for highest_user_slotid <= target_highest_slotid | |
646 | */ | |
647 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
648 | send_new_highest_used_slotid = true; | |
649 | ||
a13ce7c6 | 650 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
651 | send_new_highest_used_slotid = false; |
652 | goto out_unlock; | |
653 | } | |
a13ce7c6 | 654 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
655 | |
656 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
657 | send_new_highest_used_slotid = false; | |
b75ad4cd | 658 | out_unlock: |
35dc1d74 | 659 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 660 | res->sr_slot = NULL; |
c10e4498 | 661 | if (send_new_highest_used_slotid) |
3f10a6af | 662 | nfs41_notify_server(session->clp); |
13615871 AA |
663 | } |
664 | ||
f9c96fcc | 665 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 666 | { |
e3725ec0 | 667 | struct nfs4_session *session; |
a13ce7c6 | 668 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 669 | struct nfs_client *clp; |
ac20d163 | 670 | bool interrupted = false; |
85563073 | 671 | int ret = 1; |
b0df806c | 672 | |
a13ce7c6 TM |
673 | if (slot == NULL) |
674 | goto out_noaction; | |
468f8613 BS |
675 | /* don't increment the sequence number if the task wasn't sent */ |
676 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
677 | goto out; |
678 | ||
e3725ec0 | 679 | session = slot->table->session; |
933602e3 | 680 | |
ac20d163 TM |
681 | if (slot->interrupted) { |
682 | slot->interrupted = 0; | |
683 | interrupted = true; | |
684 | } | |
685 | ||
2f92ae34 | 686 | trace_nfs4_sequence_done(session, res); |
691daf3b | 687 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
688 | switch (res->sr_status) { |
689 | case 0: | |
b0df806c | 690 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 691 | ++slot->seq_nr; |
e3725ec0 | 692 | clp = session->clp; |
8e63b6a8 | 693 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 694 | /* Check sequence flags */ |
b15c7cdd | 695 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 696 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 697 | break; |
ac20d163 TM |
698 | case 1: |
699 | /* | |
700 | * sr_status remains 1 if an RPC level error occurred. | |
701 | * The server may or may not have processed the sequence | |
702 | * operation.. | |
703 | * Mark the slot as having hosted an interrupted RPC call. | |
704 | */ | |
705 | slot->interrupted = 1; | |
706 | goto out; | |
14516c3a TM |
707 | case -NFS4ERR_DELAY: |
708 | /* The server detected a resend of the RPC call and | |
709 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
710 | * of RFC5661. | |
711 | */ | |
df2fabff | 712 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 713 | __func__, |
df2fabff | 714 | slot->slot_nr, |
933602e3 | 715 | slot->seq_nr); |
14516c3a | 716 | goto out_retry; |
85563073 TM |
717 | case -NFS4ERR_BADSLOT: |
718 | /* | |
719 | * The slot id we used was probably retired. Try again | |
720 | * using a different slot id. | |
721 | */ | |
e8794440 TM |
722 | goto retry_nowait; |
723 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
724 | /* |
725 | * Was the last operation on this sequence interrupted? | |
726 | * If so, retry after bumping the sequence number. | |
727 | */ | |
728 | if (interrupted) { | |
729 | ++slot->seq_nr; | |
730 | goto retry_nowait; | |
731 | } | |
e8794440 TM |
732 | /* |
733 | * Could this slot have been previously retired? | |
734 | * If so, then the server may be expecting seq_nr = 1! | |
735 | */ | |
8e63b6a8 TM |
736 | if (slot->seq_nr != 1) { |
737 | slot->seq_nr = 1; | |
738 | goto retry_nowait; | |
739 | } | |
740 | break; | |
e8794440 TM |
741 | case -NFS4ERR_SEQ_FALSE_RETRY: |
742 | ++slot->seq_nr; | |
743 | goto retry_nowait; | |
14516c3a TM |
744 | default: |
745 | /* Just update the slot sequence no. */ | |
933602e3 | 746 | ++slot->seq_nr; |
b0df806c AA |
747 | } |
748 | out: | |
749 | /* The session may be reset by one of the error handlers. */ | |
750 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 751 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 752 | out_noaction: |
85563073 | 753 | return ret; |
e8794440 TM |
754 | retry_nowait: |
755 | if (rpc_restart_call_prepare(task)) { | |
756 | task->tk_status = 0; | |
757 | ret = 0; | |
758 | } | |
759 | goto out; | |
14516c3a | 760 | out_retry: |
d05dd4e9 | 761 | if (!rpc_restart_call(task)) |
14516c3a TM |
762 | goto out; |
763 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
764 | return 0; | |
b0df806c | 765 | } |
f9c96fcc | 766 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 767 | |
2c4b131d | 768 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 769 | { |
e3725ec0 | 770 | if (res->sr_slot == NULL) |
14516c3a | 771 | return 1; |
3bd2384a CL |
772 | if (!res->sr_slot->table->session) |
773 | return nfs40_sequence_done(task, res); | |
14516c3a | 774 | return nfs41_sequence_done(task, res); |
df896455 | 775 | } |
2c4b131d | 776 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 777 | |
dc70d7b3 | 778 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
779 | struct nfs4_sequence_args *args, |
780 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
781 | struct rpc_task *task) |
782 | { | |
fbcd4abc AA |
783 | struct nfs4_slot *slot; |
784 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
785 | |
786 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 787 | /* slot already allocated? */ |
dfb4f309 | 788 | if (res->sr_slot != NULL) |
d9afbd1b | 789 | goto out_success; |
ce5039c1 | 790 | |
fbcd4abc AA |
791 | tbl = &session->fc_slot_table; |
792 | ||
69d206b5 TM |
793 | task->tk_timeout = 0; |
794 | ||
fbcd4abc | 795 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 796 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 797 | !args->sa_privileged) { |
0b1c8fc4 | 798 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 799 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 800 | goto out_sleep; |
689cf5c1 AB |
801 | } |
802 | ||
2dc03b7f | 803 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
804 | if (IS_ERR(slot)) { |
805 | /* If out of memory, try again in 1/4 second */ | |
806 | if (slot == ERR_PTR(-ENOMEM)) | |
807 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 808 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 809 | goto out_sleep; |
fbcd4abc AA |
810 | } |
811 | spin_unlock(&tbl->slot_tbl_lock); | |
812 | ||
2b2fa717 | 813 | args->sa_slot = slot; |
fbcd4abc | 814 | |
e8d92382 | 815 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 816 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 817 | |
dfb4f309 | 818 | res->sr_slot = slot; |
8e63b6a8 | 819 | res->sr_timestamp = jiffies; |
2a6e26cd | 820 | res->sr_status_flags = 0; |
fbcd4abc AA |
821 | /* |
822 | * sr_status is only set in decode_sequence, and so will remain | |
823 | * set to 1 if an rpc level failure occurs. | |
824 | */ | |
825 | res->sr_status = 1; | |
2f92ae34 | 826 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
827 | out_success: |
828 | rpc_call_start(task); | |
ce5039c1 | 829 | return 0; |
7b939a3f | 830 | out_sleep: |
8fe72bac TM |
831 | /* Privileged tasks are queued with top priority */ |
832 | if (args->sa_privileged) | |
1e1093c7 TM |
833 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
834 | NULL, RPC_PRIORITY_PRIVILEGED); | |
835 | else | |
836 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
837 | spin_unlock(&tbl->slot_tbl_lock); |
838 | return -EAGAIN; | |
ce5039c1 | 839 | } |
dc70d7b3 | 840 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 841 | |
5a580e0a CL |
842 | static int nfs4_setup_sequence(const struct nfs_server *server, |
843 | struct nfs4_sequence_args *args, | |
844 | struct nfs4_sequence_res *res, | |
845 | struct rpc_task *task) | |
ce5039c1 | 846 | { |
035168ab | 847 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
848 | int ret = 0; |
849 | ||
3bd2384a | 850 | if (!session) |
cb04ad2a PT |
851 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
852 | args, res, task); | |
035168ab | 853 | |
e8d92382 | 854 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 855 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 856 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 857 | |
9d12b216 | 858 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 859 | |
ce5039c1 AA |
860 | dprintk("<-- %s status=%d\n", __func__, ret); |
861 | return ret; | |
862 | } | |
863 | ||
ce5039c1 AA |
864 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
865 | { | |
2a3eb2b9 | 866 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 867 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 868 | |
035168ab TM |
869 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
870 | ||
d9afbd1b | 871 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
872 | } |
873 | ||
69ab40c4 AA |
874 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
875 | { | |
2a3eb2b9 | 876 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 877 | |
14516c3a | 878 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
879 | } |
880 | ||
17280175 | 881 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 882 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 883 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
884 | }; |
885 | ||
3bd2384a CL |
886 | #else /* !CONFIG_NFS_V4_1 */ |
887 | ||
9915ea7e CL |
888 | static int nfs4_setup_sequence(const struct nfs_server *server, |
889 | struct nfs4_sequence_args *args, | |
890 | struct nfs4_sequence_res *res, | |
891 | struct rpc_task *task) | |
892 | { | |
cb04ad2a PT |
893 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
894 | args, res, task); | |
9915ea7e CL |
895 | } |
896 | ||
2c4b131d PT |
897 | int nfs4_sequence_done(struct rpc_task *task, |
898 | struct nfs4_sequence_res *res) | |
9915ea7e | 899 | { |
3bd2384a | 900 | return nfs40_sequence_done(task, res); |
9915ea7e | 901 | } |
2c4b131d | 902 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
903 | |
904 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
905 | |
906 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
907 | { | |
908 | struct nfs4_call_sync_data *data = calldata; | |
909 | nfs4_setup_sequence(data->seq_server, | |
910 | data->seq_args, data->seq_res, task); | |
911 | } | |
912 | ||
913 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
914 | { | |
915 | struct nfs4_call_sync_data *data = calldata; | |
916 | nfs4_sequence_done(task, data->seq_res); | |
917 | } | |
918 | ||
919 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
920 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
921 | .rpc_call_done = nfs40_call_sync_done, | |
922 | }; | |
923 | ||
7c513058 BS |
924 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
925 | struct nfs_server *server, | |
ce5039c1 AA |
926 | struct rpc_message *msg, |
927 | struct nfs4_sequence_args *args, | |
8fe72bac | 928 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
929 | { |
930 | int ret; | |
931 | struct rpc_task *task; | |
9915ea7e | 932 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 933 | struct nfs4_call_sync_data data = { |
035168ab | 934 | .seq_server = server, |
ce5039c1 AA |
935 | .seq_args = args, |
936 | .seq_res = res, | |
ce5039c1 AA |
937 | }; |
938 | struct rpc_task_setup task_setup = { | |
7c513058 | 939 | .rpc_client = clnt, |
ce5039c1 | 940 | .rpc_message = msg, |
9915ea7e | 941 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
942 | .callback_data = &data |
943 | }; | |
944 | ||
ce5039c1 AA |
945 | task = rpc_run_task(&task_setup); |
946 | if (IS_ERR(task)) | |
947 | ret = PTR_ERR(task); | |
948 | else { | |
949 | ret = task->tk_status; | |
950 | rpc_put_task(task); | |
951 | } | |
952 | return ret; | |
953 | } | |
954 | ||
7c513058 BS |
955 | int nfs4_call_sync(struct rpc_clnt *clnt, |
956 | struct nfs_server *server, | |
e73b83f2 BS |
957 | struct rpc_message *msg, |
958 | struct nfs4_sequence_args *args, | |
959 | struct nfs4_sequence_res *res, | |
960 | int cache_reply) | |
961 | { | |
a9c92d6b | 962 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 963 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 964 | } |
cccef3b9 | 965 | |
38478b24 | 966 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 967 | { |
38478b24 | 968 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 969 | |
38478b24 | 970 | spin_lock(&dir->i_lock); |
359d7d1c | 971 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 972 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 973 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 974 | dir->i_version = cinfo->after; |
3235b403 | 975 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 976 | nfs_fscache_invalidate(dir); |
38478b24 | 977 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
978 | } |
979 | ||
e56e0b78 | 980 | struct nfs4_opendata { |
c6d00e63 | 981 | struct kref kref; |
e56e0b78 TM |
982 | struct nfs_openargs o_arg; |
983 | struct nfs_openres o_res; | |
cdd4e68b TM |
984 | struct nfs_open_confirmargs c_arg; |
985 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
986 | struct nfs4_string owner_name; |
987 | struct nfs4_string group_name; | |
a49c2691 | 988 | struct nfs4_label *a_label; |
e56e0b78 | 989 | struct nfs_fattr f_attr; |
1775fd3e | 990 | struct nfs4_label *f_label; |
e56e0b78 | 991 | struct dentry *dir; |
82a2c1b7 | 992 | struct dentry *dentry; |
e56e0b78 | 993 | struct nfs4_state_owner *owner; |
aac00a8d | 994 | struct nfs4_state *state; |
e56e0b78 | 995 | struct iattr attrs; |
26e976a8 | 996 | unsigned long timestamp; |
3e309914 | 997 | unsigned int rpc_done : 1; |
5bc2afc2 | 998 | unsigned int file_created : 1; |
bdeca1b7 | 999 | unsigned int is_recover : 1; |
24ac23ab TM |
1000 | int rpc_status; |
1001 | int cancelled; | |
e56e0b78 TM |
1002 | }; |
1003 | ||
49f9a0fa TM |
1004 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1005 | int err, struct nfs4_exception *exception) | |
1006 | { | |
1007 | if (err != -EINVAL) | |
1008 | return false; | |
1009 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1010 | return false; | |
1011 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1012 | exception->retry = 1; | |
1013 | return true; | |
1014 | } | |
1015 | ||
6ae37339 TM |
1016 | static u32 |
1017 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1018 | fmode_t fmode, int openflags) | |
1019 | { | |
1020 | u32 res = 0; | |
1021 | ||
1022 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1023 | case FMODE_READ: | |
1024 | res = NFS4_SHARE_ACCESS_READ; | |
1025 | break; | |
1026 | case FMODE_WRITE: | |
1027 | res = NFS4_SHARE_ACCESS_WRITE; | |
1028 | break; | |
1029 | case FMODE_READ|FMODE_WRITE: | |
1030 | res = NFS4_SHARE_ACCESS_BOTH; | |
1031 | } | |
1032 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1033 | goto out; | |
1034 | /* Want no delegation if we're using O_DIRECT */ | |
1035 | if (openflags & O_DIRECT) | |
1036 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1037 | out: | |
1038 | return res; | |
1039 | } | |
1040 | ||
49f9a0fa TM |
1041 | static enum open_claim_type4 |
1042 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1043 | enum open_claim_type4 claim) | |
1044 | { | |
1045 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1046 | return claim; | |
1047 | switch (claim) { | |
1048 | default: | |
1049 | return claim; | |
1050 | case NFS4_OPEN_CLAIM_FH: | |
1051 | return NFS4_OPEN_CLAIM_NULL; | |
1052 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1053 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1054 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1055 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1056 | } | |
1057 | } | |
2ced46c2 TM |
1058 | |
1059 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1060 | { | |
1061 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1062 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1063 | p->o_res.seqid = p->o_arg.seqid; |
1064 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1065 | p->o_res.server = p->o_arg.server; |
5f657530 | 1066 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1067 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1068 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1069 | } |
1070 | ||
82a2c1b7 | 1071 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1072 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1073 | const struct iattr *attrs, |
1775fd3e | 1074 | struct nfs4_label *label, |
4a1c0893 | 1075 | enum open_claim_type4 claim, |
8535b2be | 1076 | gfp_t gfp_mask) |
e56e0b78 | 1077 | { |
82a2c1b7 | 1078 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1079 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1080 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1081 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1082 | struct nfs4_opendata *p; |
1083 | ||
8535b2be | 1084 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1085 | if (p == NULL) |
1086 | goto err; | |
14c43f76 DQ |
1087 | |
1088 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1089 | if (IS_ERR(p->f_label)) | |
1090 | goto err_free_p; | |
1091 | ||
a49c2691 KM |
1092 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1093 | if (IS_ERR(p->a_label)) | |
1094 | goto err_free_f; | |
1095 | ||
63f5f796 TM |
1096 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1097 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1098 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1099 | goto err_free_label; |
82a2c1b7 AV |
1100 | nfs_sb_active(dentry->d_sb); |
1101 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1102 | p->dir = parent; |
1103 | p->owner = sp; | |
1104 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1105 | p->o_arg.open_flags = flags; |
1106 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1107 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1108 | fmode, flags); | |
ae2bb032 WAA |
1109 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1110 | * will return permission denied for all bits until close */ | |
1111 | if (!(flags & O_EXCL)) { | |
1112 | /* ask server to check for all possible rights as results | |
1113 | * are cached */ | |
1114 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1115 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1116 | } |
7539bbab | 1117 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1118 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1119 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1120 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1121 | p->o_arg.server = server; |
aa9c2669 | 1122 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1123 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1124 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1125 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1126 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1127 | case NFS4_OPEN_CLAIM_NULL: |
1128 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1129 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1130 | p->o_arg.fh = NFS_FH(dir); | |
1131 | break; | |
1132 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1133 | case NFS4_OPEN_CLAIM_FH: | |
1134 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1135 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1136 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1137 | } |
536e43d1 | 1138 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1139 | __u32 verf[2]; |
d77d76ff | 1140 | |
e56e0b78 TM |
1141 | p->o_arg.u.attrs = &p->attrs; |
1142 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1143 | |
1144 | verf[0] = jiffies; | |
1145 | verf[1] = current->pid; | |
1146 | memcpy(p->o_arg.u.verifier.data, verf, | |
1147 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1148 | } |
cdd4e68b TM |
1149 | p->c_arg.fh = &p->o_res.fh; |
1150 | p->c_arg.stateid = &p->o_res.stateid; | |
1151 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1152 | nfs4_init_opendata_res(p); |
c6d00e63 | 1153 | kref_init(&p->kref); |
e56e0b78 | 1154 | return p; |
14c43f76 DQ |
1155 | |
1156 | err_free_label: | |
a49c2691 KM |
1157 | nfs4_label_free(p->a_label); |
1158 | err_free_f: | |
14c43f76 DQ |
1159 | nfs4_label_free(p->f_label); |
1160 | err_free_p: | |
e56e0b78 TM |
1161 | kfree(p); |
1162 | err: | |
1163 | dput(parent); | |
1164 | return NULL; | |
1165 | } | |
1166 | ||
c6d00e63 | 1167 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1168 | { |
c6d00e63 TM |
1169 | struct nfs4_opendata *p = container_of(kref, |
1170 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1171 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1172 | |
1173 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1174 | if (p->state != NULL) |
1175 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1176 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1177 | |
a49c2691 | 1178 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1179 | nfs4_label_free(p->f_label); |
1180 | ||
c6d00e63 | 1181 | dput(p->dir); |
82a2c1b7 AV |
1182 | dput(p->dentry); |
1183 | nfs_sb_deactive(sb); | |
6926afd1 | 1184 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1185 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1186 | kfree(p); |
1187 | } | |
1188 | ||
1189 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1190 | { | |
1191 | if (p != NULL) | |
1192 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1193 | } |
1194 | ||
06f814a3 TM |
1195 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1196 | { | |
06f814a3 TM |
1197 | int ret; |
1198 | ||
06f814a3 | 1199 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1200 | return ret; |
1201 | } | |
1202 | ||
24311f88 TM |
1203 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1204 | fmode_t fmode) | |
1205 | { | |
1206 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1207 | case FMODE_READ|FMODE_WRITE: | |
1208 | return state->n_rdwr != 0; | |
1209 | case FMODE_WRITE: | |
1210 | return state->n_wronly != 0; | |
1211 | case FMODE_READ: | |
1212 | return state->n_rdonly != 0; | |
1213 | } | |
1214 | WARN_ON_ONCE(1); | |
1215 | return false; | |
1216 | } | |
1217 | ||
dc0b027d | 1218 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1219 | { |
1220 | int ret = 0; | |
dc0b027d | 1221 | |
536e43d1 | 1222 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1223 | goto out; |
1224 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1225 | case FMODE_READ: |
88069f77 TM |
1226 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1227 | && state->n_rdonly != 0; | |
6ee41268 TM |
1228 | break; |
1229 | case FMODE_WRITE: | |
88069f77 TM |
1230 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1231 | && state->n_wronly != 0; | |
6ee41268 TM |
1232 | break; |
1233 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1234 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1235 | && state->n_rdwr != 0; | |
6ee41268 | 1236 | } |
dc0b027d | 1237 | out: |
6ee41268 TM |
1238 | return ret; |
1239 | } | |
1240 | ||
2a606188 TM |
1241 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1242 | enum open_claim_type4 claim) | |
aac00a8d | 1243 | { |
652f89f6 TM |
1244 | if (delegation == NULL) |
1245 | return 0; | |
dc0b027d | 1246 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1247 | return 0; |
d25be546 TM |
1248 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1249 | return 0; | |
2a606188 TM |
1250 | switch (claim) { |
1251 | case NFS4_OPEN_CLAIM_NULL: | |
1252 | case NFS4_OPEN_CLAIM_FH: | |
1253 | break; | |
1254 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1255 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1256 | break; | |
1257 | default: | |
1258 | return 0; | |
1259 | } | |
b7391f44 | 1260 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1261 | return 1; |
1262 | } | |
1263 | ||
dc0b027d | 1264 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1265 | { |
dc0b027d | 1266 | switch (fmode) { |
e7616923 TM |
1267 | case FMODE_WRITE: |
1268 | state->n_wronly++; | |
1269 | break; | |
1270 | case FMODE_READ: | |
1271 | state->n_rdonly++; | |
1272 | break; | |
1273 | case FMODE_READ|FMODE_WRITE: | |
1274 | state->n_rdwr++; | |
1275 | } | |
dc0b027d | 1276 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1277 | } |
1278 | ||
4f14c194 TM |
1279 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1280 | { | |
1281 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1282 | bool need_recover = false; | |
1283 | ||
1284 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1285 | need_recover = true; | |
1286 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1287 | need_recover = true; | |
1288 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1289 | need_recover = true; | |
1290 | if (need_recover) | |
1291 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1292 | } | |
1293 | ||
e999e80e TM |
1294 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1295 | nfs4_stateid *stateid) | |
1296 | { | |
1297 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1298 | return true; | |
4f14c194 TM |
1299 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1300 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1301 | return true; |
4f14c194 | 1302 | } |
e999e80e TM |
1303 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1304 | return true; | |
1305 | return false; | |
1306 | } | |
1307 | ||
f95549cf TM |
1308 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1309 | { | |
3c38cbe2 TM |
1310 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1311 | return; | |
f95549cf TM |
1312 | if (state->n_wronly) |
1313 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1314 | if (state->n_rdonly) | |
1315 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1316 | if (state->n_rdwr) | |
1317 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1318 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1319 | } |
1320 | ||
226056c5 | 1321 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1322 | nfs4_stateid *arg_stateid, |
226056c5 | 1323 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1324 | { |
226056c5 TM |
1325 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1326 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1327 | case FMODE_WRITE: | |
1328 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1329 | break; | |
1330 | case FMODE_READ: | |
1331 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1332 | break; | |
1333 | case 0: | |
1334 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1335 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1336 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1337 | } | |
1338 | if (stateid == NULL) | |
1339 | return; | |
f95549cf | 1340 | /* Handle races with OPEN */ |
4a1e2feb TM |
1341 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1342 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1343 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1344 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1345 | return; |
f95549cf | 1346 | } |
003707c7 | 1347 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1348 | nfs4_stateid_copy(&state->stateid, stateid); |
1349 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1350 | } |
1351 | ||
4a1e2feb TM |
1352 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1353 | nfs4_stateid *arg_stateid, | |
1354 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1355 | { |
1356 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1357 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1358 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1359 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1360 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1361 | } |
1362 | ||
dc0b027d | 1363 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1364 | { |
dc0b027d | 1365 | switch (fmode) { |
003707c7 TM |
1366 | case FMODE_READ: |
1367 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1368 | break; | |
1369 | case FMODE_WRITE: | |
1370 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1371 | break; | |
1372 | case FMODE_READ|FMODE_WRITE: | |
1373 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1374 | } | |
e999e80e TM |
1375 | if (!nfs_need_update_open_stateid(state, stateid)) |
1376 | return; | |
1377 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1378 | nfs4_stateid_copy(&state->stateid, stateid); | |
1379 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1380 | } |
1381 | ||
dc0b027d | 1382 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1383 | { |
8bda4e4c TM |
1384 | /* |
1385 | * Protect the call to nfs4_state_set_mode_locked and | |
1386 | * serialise the stateid update | |
1387 | */ | |
1388 | write_seqlock(&state->seqlock); | |
003707c7 | 1389 | if (deleg_stateid != NULL) { |
f597c537 | 1390 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1391 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1392 | } | |
1393 | if (open_stateid != NULL) | |
dc0b027d | 1394 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1395 | write_sequnlock(&state->seqlock); |
1396 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1397 | update_open_stateflags(state, fmode); |
ec073428 | 1398 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1399 | } |
1400 | ||
dc0b027d | 1401 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1402 | { |
1403 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1404 | struct nfs_delegation *deleg_cur; | |
1405 | int ret = 0; | |
1406 | ||
dc0b027d | 1407 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1408 | |
1409 | rcu_read_lock(); | |
1410 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1411 | if (deleg_cur == NULL) | |
1412 | goto no_delegation; | |
1413 | ||
1414 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1415 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1416 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1417 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1418 | goto no_delegation_unlock; |
1419 | ||
1420 | if (delegation == NULL) | |
1421 | delegation = &deleg_cur->stateid; | |
f597c537 | 1422 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1423 | goto no_delegation_unlock; |
1424 | ||
b7391f44 | 1425 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1426 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1427 | ret = 1; |
1428 | no_delegation_unlock: | |
1429 | spin_unlock(&deleg_cur->lock); | |
1430 | no_delegation: | |
1431 | rcu_read_unlock(); | |
1432 | ||
1433 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1434 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1435 | ret = 1; |
1436 | } | |
4f14c194 TM |
1437 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1438 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1439 | |
1440 | return ret; | |
1441 | } | |
1442 | ||
39071e6f TM |
1443 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1444 | const nfs4_stateid *stateid) | |
1445 | { | |
1446 | struct nfs4_state *state = lsp->ls_state; | |
1447 | bool ret = false; | |
1448 | ||
1449 | spin_lock(&state->state_lock); | |
1450 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1451 | goto out_noupdate; | |
1452 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1453 | goto out_noupdate; | |
1454 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1455 | ret = true; | |
1456 | out_noupdate: | |
1457 | spin_unlock(&state->state_lock); | |
1458 | return ret; | |
1459 | } | |
34310430 | 1460 | |
dc0b027d | 1461 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1462 | { |
1463 | struct nfs_delegation *delegation; | |
1464 | ||
1465 | rcu_read_lock(); | |
1466 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1467 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1468 | rcu_read_unlock(); |
1469 | return; | |
1470 | } | |
1471 | rcu_read_unlock(); | |
57ec14c5 | 1472 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1473 | } |
1474 | ||
6ee41268 | 1475 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1476 | { |
1477 | struct nfs4_state *state = opendata->state; | |
1478 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1479 | struct nfs_delegation *delegation; | |
f448badd | 1480 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1481 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1482 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1483 | nfs4_stateid stateid; |
1484 | int ret = -EAGAIN; | |
1485 | ||
aac00a8d | 1486 | for (;;) { |
61beef75 | 1487 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1488 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1489 | update_open_stateflags(state, fmode); |
6ee41268 | 1490 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1491 | goto out_return_state; |
6ee41268 | 1492 | } |
61beef75 | 1493 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1494 | rcu_read_lock(); |
1495 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1496 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1497 | rcu_read_unlock(); |
aac00a8d | 1498 | break; |
34310430 | 1499 | } |
aac00a8d | 1500 | /* Save the delegation */ |
f597c537 | 1501 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1502 | rcu_read_unlock(); |
fa332941 | 1503 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1504 | if (!opendata->is_recover) { |
1505 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1506 | if (ret != 0) | |
1507 | goto out; | |
1508 | } | |
aac00a8d | 1509 | ret = -EAGAIN; |
34310430 TM |
1510 | |
1511 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1512 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1513 | goto out_return_state; |
aac00a8d | 1514 | } |
aac00a8d TM |
1515 | out: |
1516 | return ERR_PTR(ret); | |
1517 | out_return_state: | |
1518 | atomic_inc(&state->count); | |
1519 | return state; | |
1520 | } | |
1521 | ||
e23008ec AA |
1522 | static void |
1523 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1524 | { | |
1525 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1526 | struct nfs_delegation *delegation; | |
1527 | int delegation_flags = 0; | |
1528 | ||
1529 | rcu_read_lock(); | |
1530 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1531 | if (delegation) | |
1532 | delegation_flags = delegation->flags; | |
1533 | rcu_read_unlock(); | |
72d79ff8 TM |
1534 | switch (data->o_arg.claim) { |
1535 | default: | |
1536 | break; | |
1537 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1538 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1539 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1540 | "returning a delegation for " | |
1541 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1542 | clp->cl_hostname); | |
72d79ff8 TM |
1543 | return; |
1544 | } | |
1545 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec AA |
1546 | nfs_inode_set_delegation(state->inode, |
1547 | data->owner->so_cred, | |
1548 | &data->o_res); | |
1549 | else | |
1550 | nfs_inode_reclaim_delegation(state->inode, | |
1551 | data->owner->so_cred, | |
1552 | &data->o_res); | |
1553 | } | |
1554 | ||
1555 | /* | |
1556 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1557 | * and update the nfs4_state. | |
1558 | */ | |
1559 | static struct nfs4_state * | |
1560 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1561 | { | |
1562 | struct inode *inode = data->state->inode; | |
1563 | struct nfs4_state *state = data->state; | |
1564 | int ret; | |
1565 | ||
d2bfda2e WAA |
1566 | if (!data->rpc_done) { |
1567 | if (data->rpc_status) { | |
1568 | ret = data->rpc_status; | |
1569 | goto err; | |
1570 | } | |
1571 | /* cached opens have already been processed */ | |
1572 | goto update; | |
e23008ec AA |
1573 | } |
1574 | ||
e23008ec AA |
1575 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1576 | if (ret) | |
1577 | goto err; | |
1578 | ||
1579 | if (data->o_res.delegation_type != 0) | |
1580 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1581 | update: |
e23008ec AA |
1582 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1583 | data->o_arg.fmode); | |
d49f042a | 1584 | atomic_inc(&state->count); |
e23008ec AA |
1585 | |
1586 | return state; | |
1587 | err: | |
1588 | return ERR_PTR(ret); | |
1589 | ||
1590 | } | |
1591 | ||
1592 | static struct nfs4_state * | |
1593 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1594 | { |
1595 | struct inode *inode; | |
1596 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1597 | int ret; |
24ac23ab | 1598 | |
aac00a8d | 1599 | if (!data->rpc_done) { |
6ee41268 | 1600 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1601 | goto out; |
1602 | } | |
1603 | ||
1b370bc2 | 1604 | ret = -EAGAIN; |
24ac23ab | 1605 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1606 | goto err; |
1775fd3e | 1607 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1608 | ret = PTR_ERR(inode); |
03f28e3a | 1609 | if (IS_ERR(inode)) |
1b370bc2 TM |
1610 | goto err; |
1611 | ret = -ENOMEM; | |
24ac23ab TM |
1612 | state = nfs4_get_open_state(inode, data->owner); |
1613 | if (state == NULL) | |
1b370bc2 | 1614 | goto err_put_inode; |
e23008ec AA |
1615 | if (data->o_res.delegation_type != 0) |
1616 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1617 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1618 | data->o_arg.fmode); |
24ac23ab | 1619 | iput(inode); |
aac00a8d | 1620 | out: |
7aa262b5 | 1621 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1622 | return state; |
1b370bc2 TM |
1623 | err_put_inode: |
1624 | iput(inode); | |
1625 | err: | |
1626 | return ERR_PTR(ret); | |
24ac23ab TM |
1627 | } |
1628 | ||
e23008ec AA |
1629 | static struct nfs4_state * |
1630 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1631 | { | |
1632 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1633 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1634 | return _nfs4_opendata_to_nfs4_state(data); | |
1635 | } | |
1636 | ||
864472e9 TM |
1637 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1638 | { | |
1639 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1640 | struct nfs_open_context *ctx; | |
1641 | ||
1642 | spin_lock(&state->inode->i_lock); | |
1643 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1644 | if (ctx->state != state) | |
1645 | continue; | |
1646 | get_nfs_open_context(ctx); | |
1647 | spin_unlock(&state->inode->i_lock); | |
1648 | return ctx; | |
1649 | } | |
1650 | spin_unlock(&state->inode->i_lock); | |
1651 | return ERR_PTR(-ENOENT); | |
1652 | } | |
1653 | ||
4a1c0893 TM |
1654 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1655 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1656 | { |
1657 | struct nfs4_opendata *opendata; | |
1658 | ||
4a1c0893 | 1659 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1660 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1661 | if (opendata == NULL) |
1662 | return ERR_PTR(-ENOMEM); | |
1663 | opendata->state = state; | |
1664 | atomic_inc(&state->count); | |
1665 | return opendata; | |
1666 | } | |
1667 | ||
24311f88 TM |
1668 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
1669 | fmode_t fmode) | |
864472e9 | 1670 | { |
2ced46c2 | 1671 | struct nfs4_state *newstate; |
864472e9 TM |
1672 | int ret; |
1673 | ||
24311f88 | 1674 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 1675 | return 0; |
dc0b027d TM |
1676 | opendata->o_arg.open_flags = 0; |
1677 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1678 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1679 | NFS_SB(opendata->dentry->d_sb), | |
1680 | fmode, 0); | |
2ced46c2 TM |
1681 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1682 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1683 | nfs4_init_opendata_res(opendata); | |
b257957e | 1684 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1685 | if (ret != 0) |
1686 | return ret; | |
2ced46c2 | 1687 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1688 | if (IS_ERR(newstate)) |
1689 | return PTR_ERR(newstate); | |
24311f88 TM |
1690 | if (newstate != opendata->state) |
1691 | ret = -ESTALE; | |
643168c2 | 1692 | nfs4_close_state(newstate, fmode); |
24311f88 | 1693 | return ret; |
864472e9 TM |
1694 | } |
1695 | ||
1696 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1697 | { | |
864472e9 TM |
1698 | int ret; |
1699 | ||
4f14c194 TM |
1700 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1701 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1702 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1703 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1704 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1705 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1706 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 | 1707 | smp_rmb(); |
24311f88 TM |
1708 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
1709 | if (ret != 0) | |
1710 | return ret; | |
1711 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1712 | if (ret != 0) | |
1713 | return ret; | |
1714 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1715 | if (ret != 0) | |
1716 | return ret; | |
1ac7e2fd TM |
1717 | /* |
1718 | * We may have performed cached opens for all three recoveries. | |
1719 | * Check if we need to update the current stateid. | |
1720 | */ | |
1721 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1722 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1723 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1724 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1725 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1726 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1727 | } |
864472e9 TM |
1728 | return 0; |
1729 | } | |
1730 | ||
1da177e4 LT |
1731 | /* |
1732 | * OPEN_RECLAIM: | |
1733 | * reclaim state on the server after a reboot. | |
1da177e4 | 1734 | */ |
539cd03a | 1735 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1736 | { |
1ac7e2fd | 1737 | struct nfs_delegation *delegation; |
864472e9 | 1738 | struct nfs4_opendata *opendata; |
dc0b027d | 1739 | fmode_t delegation_type = 0; |
1da177e4 LT |
1740 | int status; |
1741 | ||
4a1c0893 TM |
1742 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1743 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1744 | if (IS_ERR(opendata)) |
1745 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1746 | rcu_read_lock(); |
1747 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1748 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1749 | delegation_type = delegation->type; |
1ac7e2fd | 1750 | rcu_read_unlock(); |
864472e9 TM |
1751 | opendata->o_arg.u.delegation_type = delegation_type; |
1752 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1753 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1754 | return status; |
1755 | } | |
1756 | ||
539cd03a | 1757 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1758 | { |
1759 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1760 | struct nfs4_exception exception = { }; | |
1761 | int err; | |
1762 | do { | |
539cd03a | 1763 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1764 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1765 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1766 | continue; | |
168667c4 | 1767 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1768 | break; |
1769 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1770 | } while (exception.retry); |
1771 | return err; | |
1772 | } | |
1773 | ||
864472e9 TM |
1774 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1775 | { | |
1776 | struct nfs_open_context *ctx; | |
1777 | int ret; | |
1778 | ||
1779 | ctx = nfs4_state_find_open_context(state); | |
1780 | if (IS_ERR(ctx)) | |
91876b13 | 1781 | return -EAGAIN; |
539cd03a | 1782 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1783 | put_nfs_open_context(ctx); |
1784 | return ret; | |
1785 | } | |
1786 | ||
db4f2e63 | 1787 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1788 | { |
be76b5b6 TM |
1789 | switch (err) { |
1790 | default: | |
1791 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1792 | "%d.\n", __func__, err); | |
1793 | case 0: | |
1794 | case -ENOENT: | |
8eee52af | 1795 | case -EAGAIN: |
be76b5b6 TM |
1796 | case -ESTALE: |
1797 | break; | |
1798 | case -NFS4ERR_BADSESSION: | |
1799 | case -NFS4ERR_BADSLOT: | |
1800 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1801 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1802 | case -NFS4ERR_DEADSESSION: | |
1803 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1804 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1805 | return -EAGAIN; | |
1806 | case -NFS4ERR_STALE_CLIENTID: | |
1807 | case -NFS4ERR_STALE_STATEID: | |
1808 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1809 | case -NFS4ERR_EXPIRED: | |
1810 | /* Don't recall a delegation if it was lost */ | |
1811 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1812 | return -EAGAIN; | |
352297b9 CL |
1813 | case -NFS4ERR_MOVED: |
1814 | nfs4_schedule_migration_recovery(server); | |
1815 | return -EAGAIN; | |
8ef2f8d4 CL |
1816 | case -NFS4ERR_LEASE_MOVED: |
1817 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1818 | return -EAGAIN; | |
be76b5b6 TM |
1819 | case -NFS4ERR_DELEG_REVOKED: |
1820 | case -NFS4ERR_ADMIN_REVOKED: | |
1821 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1822 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1823 | nfs_inode_find_state_and_recover(state->inode, |
1824 | stateid); | |
1825 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1826 | return -EAGAIN; |
be76b5b6 TM |
1827 | case -NFS4ERR_DELAY: |
1828 | case -NFS4ERR_GRACE: | |
1829 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1830 | ssleep(1); | |
1831 | return -EAGAIN; | |
db4f2e63 TM |
1832 | case -ENOMEM: |
1833 | case -NFS4ERR_DENIED: | |
1834 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1835 | return 0; | |
be76b5b6 | 1836 | } |
1da177e4 LT |
1837 | return err; |
1838 | } | |
1839 | ||
24311f88 TM |
1840 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
1841 | struct nfs4_state *state, const nfs4_stateid *stateid, | |
1842 | fmode_t type) | |
db4f2e63 TM |
1843 | { |
1844 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1845 | struct nfs4_opendata *opendata; | |
24311f88 | 1846 | int err = 0; |
db4f2e63 TM |
1847 | |
1848 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1849 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1850 | if (IS_ERR(opendata)) | |
1851 | return PTR_ERR(opendata); | |
1852 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5e99b532 JL |
1853 | write_seqlock(&state->seqlock); |
1854 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1855 | write_sequnlock(&state->seqlock); | |
24311f88 TM |
1856 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1857 | switch (type & (FMODE_READ|FMODE_WRITE)) { | |
1858 | case FMODE_READ|FMODE_WRITE: | |
1859 | case FMODE_WRITE: | |
1860 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); | |
1861 | if (err) | |
1862 | break; | |
1863 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1864 | if (err) | |
1865 | break; | |
1866 | case FMODE_READ: | |
1867 | err = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1868 | } | |
db4f2e63 TM |
1869 | nfs4_opendata_put(opendata); |
1870 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1871 | } | |
1872 | ||
be05c860 CL |
1873 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1874 | { | |
1875 | struct nfs4_opendata *data = calldata; | |
1876 | ||
cb04ad2a PT |
1877 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1878 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1879 | } |
1880 | ||
cdd4e68b TM |
1881 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1882 | { | |
1883 | struct nfs4_opendata *data = calldata; | |
1884 | ||
17ead6c8 | 1885 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1886 | |
cdd4e68b | 1887 | data->rpc_status = task->tk_status; |
26e976a8 | 1888 | if (data->rpc_status == 0) { |
f597c537 | 1889 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1890 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1891 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1892 | data->rpc_done = 1; |
26e976a8 | 1893 | } |
cdd4e68b TM |
1894 | } |
1895 | ||
1896 | static void nfs4_open_confirm_release(void *calldata) | |
1897 | { | |
1898 | struct nfs4_opendata *data = calldata; | |
1899 | struct nfs4_state *state = NULL; | |
1900 | ||
1901 | /* If this request hasn't been cancelled, do nothing */ | |
1902 | if (data->cancelled == 0) | |
1903 | goto out_free; | |
1904 | /* In case of error, no cleanup! */ | |
3e309914 | 1905 | if (!data->rpc_done) |
cdd4e68b | 1906 | goto out_free; |
cdd4e68b | 1907 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1908 | if (!IS_ERR(state)) |
643168c2 | 1909 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1910 | out_free: |
c6d00e63 | 1911 | nfs4_opendata_put(data); |
cdd4e68b TM |
1912 | } |
1913 | ||
1914 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1915 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1916 | .rpc_call_done = nfs4_open_confirm_done, |
1917 | .rpc_release = nfs4_open_confirm_release, | |
1918 | }; | |
1919 | ||
1920 | /* | |
1921 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1922 | */ | |
1923 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1924 | { | |
2b0143b5 | 1925 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1926 | struct rpc_task *task; |
5138fde0 TM |
1927 | struct rpc_message msg = { |
1928 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1929 | .rpc_argp = &data->c_arg, | |
1930 | .rpc_resp = &data->c_res, | |
1931 | .rpc_cred = data->owner->so_cred, | |
1932 | }; | |
c970aa85 TM |
1933 | struct rpc_task_setup task_setup_data = { |
1934 | .rpc_client = server->client, | |
5138fde0 | 1935 | .rpc_message = &msg, |
c970aa85 TM |
1936 | .callback_ops = &nfs4_open_confirm_ops, |
1937 | .callback_data = data, | |
101070ca | 1938 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1939 | .flags = RPC_TASK_ASYNC, |
1940 | }; | |
1da177e4 LT |
1941 | int status; |
1942 | ||
17ead6c8 | 1943 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1944 | kref_get(&data->kref); |
3e309914 TM |
1945 | data->rpc_done = 0; |
1946 | data->rpc_status = 0; | |
5138fde0 | 1947 | data->timestamp = jiffies; |
e92c1e0d BC |
1948 | if (data->is_recover) |
1949 | nfs4_set_sequence_privileged(&data->c_arg.seq_args); | |
c970aa85 | 1950 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1951 | if (IS_ERR(task)) |
cdd4e68b | 1952 | return PTR_ERR(task); |
cdd4e68b TM |
1953 | status = nfs4_wait_for_completion_rpc_task(task); |
1954 | if (status != 0) { | |
1955 | data->cancelled = 1; | |
1956 | smp_wmb(); | |
1957 | } else | |
1958 | status = data->rpc_status; | |
e6b3c4db | 1959 | rpc_put_task(task); |
1da177e4 LT |
1960 | return status; |
1961 | } | |
1962 | ||
24ac23ab | 1963 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1964 | { |
24ac23ab TM |
1965 | struct nfs4_opendata *data = calldata; |
1966 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1967 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 1968 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 1969 | |
24ac23ab | 1970 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1971 | goto out_wait; |
aac00a8d TM |
1972 | /* |
1973 | * Check if we still need to send an OPEN call, or if we can use | |
1974 | * a delegation instead. | |
1975 | */ | |
1976 | if (data->state != NULL) { | |
1977 | struct nfs_delegation *delegation; | |
1978 | ||
dc0b027d | 1979 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1980 | goto out_no_action; |
aac00a8d TM |
1981 | rcu_read_lock(); |
1982 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 1983 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 1984 | goto unlock_no_action; |
aac00a8d TM |
1985 | rcu_read_unlock(); |
1986 | } | |
95b72eb0 | 1987 | /* Update client id. */ |
549b19cc | 1988 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
1989 | switch (claim) { |
1990 | default: | |
1991 | break; | |
8188df17 TM |
1992 | case NFS4_OPEN_CLAIM_PREVIOUS: |
1993 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1994 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1995 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1996 | case NFS4_OPEN_CLAIM_FH: |
1997 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1998 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1999 | } | |
26e976a8 | 2000 | data->timestamp = jiffies; |
035168ab | 2001 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 2002 | &data->o_arg.seq_args, |
2240a9e2 TM |
2003 | &data->o_res.seq_res, |
2004 | task) != 0) | |
2005 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2006 | |
2007 | /* Set the create mode (note dependency on the session type) */ | |
2008 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2009 | if (data->o_arg.open_flags & O_EXCL) { | |
2010 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2011 | if (nfs4_has_persistent_session(clp)) | |
2012 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2013 | else if (clp->cl_mvops->minor_version > 0) | |
2014 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2015 | } | |
6ee41268 | 2016 | return; |
652f89f6 TM |
2017 | unlock_no_action: |
2018 | rcu_read_unlock(); | |
6ee41268 TM |
2019 | out_no_action: |
2020 | task->tk_action = NULL; | |
c8da19b9 | 2021 | out_wait: |
b75ad4cd | 2022 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2023 | } |
2024 | ||
24ac23ab TM |
2025 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2026 | { | |
2027 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2028 | |
24ac23ab | 2029 | data->rpc_status = task->tk_status; |
d898528c | 2030 | |
14516c3a TM |
2031 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
2032 | return; | |
d898528c | 2033 | |
24ac23ab | 2034 | if (task->tk_status == 0) { |
807d66d8 TM |
2035 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2036 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2037 | case S_IFREG: |
2038 | break; | |
2039 | case S_IFLNK: | |
24ac23ab | 2040 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2041 | break; |
2042 | case S_IFDIR: | |
24ac23ab | 2043 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2044 | break; |
2045 | default: | |
24ac23ab | 2046 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2047 | } |
6f926b5b | 2048 | } |
26e976a8 | 2049 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2050 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2051 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2052 | } |
3e309914 | 2053 | data->rpc_done = 1; |
24ac23ab | 2054 | } |
6f926b5b | 2055 | |
24ac23ab TM |
2056 | static void nfs4_open_release(void *calldata) |
2057 | { | |
2058 | struct nfs4_opendata *data = calldata; | |
2059 | struct nfs4_state *state = NULL; | |
2060 | ||
2061 | /* If this request hasn't been cancelled, do nothing */ | |
2062 | if (data->cancelled == 0) | |
2063 | goto out_free; | |
2064 | /* In case of error, no cleanup! */ | |
3e309914 | 2065 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2066 | goto out_free; |
2067 | /* In case we need an open_confirm, no cleanup! */ | |
2068 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2069 | goto out_free; | |
24ac23ab | 2070 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2071 | if (!IS_ERR(state)) |
643168c2 | 2072 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2073 | out_free: |
c6d00e63 | 2074 | nfs4_opendata_put(data); |
24ac23ab TM |
2075 | } |
2076 | ||
2077 | static const struct rpc_call_ops nfs4_open_ops = { | |
2078 | .rpc_call_prepare = nfs4_open_prepare, | |
2079 | .rpc_call_done = nfs4_open_done, | |
2080 | .rpc_release = nfs4_open_release, | |
2081 | }; | |
2082 | ||
b257957e | 2083 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 2084 | { |
2b0143b5 | 2085 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2086 | struct nfs_server *server = NFS_SERVER(dir); |
2087 | struct nfs_openargs *o_arg = &data->o_arg; | |
2088 | struct nfs_openres *o_res = &data->o_res; | |
2089 | struct rpc_task *task; | |
5138fde0 TM |
2090 | struct rpc_message msg = { |
2091 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2092 | .rpc_argp = o_arg, | |
2093 | .rpc_resp = o_res, | |
2094 | .rpc_cred = data->owner->so_cred, | |
2095 | }; | |
c970aa85 TM |
2096 | struct rpc_task_setup task_setup_data = { |
2097 | .rpc_client = server->client, | |
5138fde0 | 2098 | .rpc_message = &msg, |
c970aa85 TM |
2099 | .callback_ops = &nfs4_open_ops, |
2100 | .callback_data = data, | |
101070ca | 2101 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2102 | .flags = RPC_TASK_ASYNC, |
2103 | }; | |
24ac23ab TM |
2104 | int status; |
2105 | ||
a9c92d6b | 2106 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2107 | kref_get(&data->kref); |
3e309914 TM |
2108 | data->rpc_done = 0; |
2109 | data->rpc_status = 0; | |
2ced46c2 | 2110 | data->cancelled = 0; |
bdeca1b7 TM |
2111 | data->is_recover = 0; |
2112 | if (isrecover) { | |
8fe72bac | 2113 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2114 | data->is_recover = 1; |
2115 | } | |
c970aa85 | 2116 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2117 | if (IS_ERR(task)) |
2118 | return PTR_ERR(task); | |
2119 | status = nfs4_wait_for_completion_rpc_task(task); | |
2120 | if (status != 0) { | |
2121 | data->cancelled = 1; | |
2122 | smp_wmb(); | |
2123 | } else | |
2124 | status = data->rpc_status; | |
2125 | rpc_put_task(task); | |
2126 | ||
2127 | return status; | |
2128 | } | |
2129 | ||
2130 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2131 | { | |
2b0143b5 | 2132 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2133 | struct nfs_openres *o_res = &data->o_res; |
2134 | int status; | |
2135 | ||
2136 | status = nfs4_run_open_task(data, 1); | |
2137 | if (status != 0 || !data->rpc_done) | |
2138 | return status; | |
2139 | ||
6926afd1 TM |
2140 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2141 | ||
b257957e AB |
2142 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2143 | status = _nfs4_proc_open_confirm(data); | |
2144 | if (status != 0) | |
2145 | return status; | |
2146 | } | |
2147 | ||
2148 | return status; | |
2149 | } | |
2150 | ||
f3792d63 TM |
2151 | /* |
2152 | * Additional permission checks in order to distinguish between an | |
2153 | * open for read, and an open for execute. This works around the | |
2154 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2155 | * the same. | |
2156 | * Note that in the non-execute case, we want to turn off permission | |
2157 | * checking if we just created a new file (POSIX open() semantics). | |
2158 | */ | |
6168f62c WAA |
2159 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2160 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2161 | struct nfs4_state *state, fmode_t fmode, |
2162 | int openflags) | |
6168f62c WAA |
2163 | { |
2164 | struct nfs_access_entry cache; | |
2165 | u32 mask; | |
2166 | ||
2167 | /* access call failed or for some reason the server doesn't | |
2168 | * support any access modes -- defer access call until later */ | |
2169 | if (opendata->o_res.access_supported == 0) | |
2170 | return 0; | |
2171 | ||
2172 | mask = 0; | |
f3792d63 TM |
2173 | /* |
2174 | * Use openflags to check for exec, because fmode won't | |
2175 | * always have FMODE_EXEC set when file open for exec. | |
2176 | */ | |
f8d9a897 WAA |
2177 | if (openflags & __FMODE_EXEC) { |
2178 | /* ONLY check for exec rights */ | |
2179 | mask = MAY_EXEC; | |
f3792d63 | 2180 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2181 | mask = MAY_READ; |
6168f62c WAA |
2182 | |
2183 | cache.cred = cred; | |
2184 | cache.jiffies = jiffies; | |
2185 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2186 | nfs_access_add_cache(state->inode, &cache); | |
2187 | ||
bbd3a8ee | 2188 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2189 | return 0; |
2190 | ||
2191 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2192 | nfs4_close_state(state, fmode); | |
998f40b5 | 2193 | return -EACCES; |
6168f62c WAA |
2194 | } |
2195 | ||
b257957e AB |
2196 | /* |
2197 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2198 | */ | |
2199 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2200 | { | |
2b0143b5 | 2201 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2202 | struct nfs_server *server = NFS_SERVER(dir); |
2203 | struct nfs_openargs *o_arg = &data->o_arg; | |
2204 | struct nfs_openres *o_res = &data->o_res; | |
2205 | int status; | |
2206 | ||
2207 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2208 | if (!data->rpc_done) |
2209 | return status; | |
2210 | if (status != 0) { | |
2211 | if (status == -NFS4ERR_BADNAME && | |
2212 | !(o_arg->open_flags & O_CREAT)) | |
2213 | return -ENOENT; | |
24ac23ab | 2214 | return status; |
08ef7bd3 | 2215 | } |
24ac23ab | 2216 | |
6926afd1 TM |
2217 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2218 | ||
5bc2afc2 | 2219 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2220 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2221 | if (o_arg->open_flags & O_EXCL) |
2222 | data->file_created = 1; | |
2223 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2224 | data->file_created = 1; | |
2225 | } | |
0df5dd4a TM |
2226 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2227 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2228 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2229 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2230 | if (status != 0) |
24ac23ab | 2231 | return status; |
1da177e4 LT |
2232 | } |
2233 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2234 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2235 | return 0; |
1da177e4 LT |
2236 | } |
2237 | ||
d83217c1 AA |
2238 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2239 | { | |
2240 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2241 | } | |
2242 | ||
1da177e4 LT |
2243 | /* |
2244 | * OPEN_EXPIRED: | |
2245 | * reclaim state on the server after a network partition. | |
2246 | * Assumes caller holds the appropriate lock | |
2247 | */ | |
539cd03a | 2248 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2249 | { |
e56e0b78 | 2250 | struct nfs4_opendata *opendata; |
864472e9 | 2251 | int ret; |
1da177e4 | 2252 | |
4a1c0893 | 2253 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2254 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2255 | if (IS_ERR(opendata)) |
2256 | return PTR_ERR(opendata); | |
864472e9 | 2257 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2258 | if (ret == -ESTALE) |
3d4ff43d | 2259 | d_drop(ctx->dentry); |
c6d00e63 | 2260 | nfs4_opendata_put(opendata); |
864472e9 | 2261 | return ret; |
1da177e4 LT |
2262 | } |
2263 | ||
a9ed2e25 | 2264 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2265 | { |
539cd03a | 2266 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2267 | struct nfs4_exception exception = { }; |
2268 | int err; | |
2269 | ||
2270 | do { | |
539cd03a | 2271 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2272 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2273 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2274 | continue; | |
a9ed2e25 TM |
2275 | switch (err) { |
2276 | default: | |
2277 | goto out; | |
2278 | case -NFS4ERR_GRACE: | |
2279 | case -NFS4ERR_DELAY: | |
2280 | nfs4_handle_exception(server, err, &exception); | |
2281 | err = 0; | |
2282 | } | |
202b50dc | 2283 | } while (exception.retry); |
a9ed2e25 | 2284 | out: |
202b50dc TM |
2285 | return err; |
2286 | } | |
2287 | ||
1da177e4 LT |
2288 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2289 | { | |
1da177e4 | 2290 | struct nfs_open_context *ctx; |
864472e9 | 2291 | int ret; |
1da177e4 | 2292 | |
864472e9 TM |
2293 | ctx = nfs4_state_find_open_context(state); |
2294 | if (IS_ERR(ctx)) | |
91876b13 | 2295 | return -EAGAIN; |
539cd03a | 2296 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2297 | put_nfs_open_context(ctx); |
2298 | return ret; | |
1da177e4 LT |
2299 | } |
2300 | ||
4dfd4f7a TM |
2301 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2302 | { | |
2303 | nfs_remove_bad_delegation(state->inode); | |
2304 | write_seqlock(&state->seqlock); | |
2305 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2306 | write_sequnlock(&state->seqlock); | |
2307 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2308 | } | |
2309 | ||
2310 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2311 | { | |
2312 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2313 | nfs_finish_clear_delegation_stateid(state); | |
2314 | } | |
2315 | ||
2316 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2317 | { | |
2318 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2319 | nfs40_clear_delegation_stateid(state); | |
2320 | return nfs4_open_expired(sp, state); | |
2321 | } | |
2322 | ||
f062eb6c | 2323 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2324 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2325 | { |
f062eb6c | 2326 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2327 | nfs4_stateid stateid; |
ab7cb0df | 2328 | struct nfs_delegation *delegation; |
0c116cad TM |
2329 | struct rpc_cred *cred; |
2330 | int status; | |
3e60ffdd | 2331 | |
ab7cb0df TM |
2332 | /* Get the delegation credential for use by test/free_stateid */ |
2333 | rcu_read_lock(); | |
2334 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2335 | if (delegation == NULL) { |
ab7cb0df | 2336 | rcu_read_unlock(); |
0c116cad TM |
2337 | return; |
2338 | } | |
2339 | ||
2340 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2341 | cred = get_rpccred(delegation->cred); | |
2342 | rcu_read_unlock(); | |
2343 | status = nfs41_test_stateid(server, &stateid, cred); | |
2344 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2345 | |
3e60ffdd CL |
2346 | if (status != NFS_OK) { |
2347 | /* Free the stateid unless the server explicitly | |
2348 | * informs us the stateid is unrecognized. */ | |
2349 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2350 | nfs41_free_stateid(server, &stateid, cred); |
2351 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2352 | } |
ab7cb0df | 2353 | |
0c116cad | 2354 | put_rpccred(cred); |
3e60ffdd CL |
2355 | } |
2356 | ||
2357 | /** | |
2358 | * nfs41_check_open_stateid - possibly free an open stateid | |
2359 | * | |
2360 | * @state: NFSv4 state for an inode | |
2361 | * | |
2362 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2363 | * Otherwise a negative NFS4ERR value is returned. | |
2364 | */ | |
2365 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2366 | { | |
2367 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2368 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2369 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2370 | int status; |
2371 | ||
2372 | /* If a state reset has been done, test_stateid is unneeded */ | |
2373 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2374 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2375 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2376 | return -NFS4ERR_BAD_STATEID; | |
2377 | ||
ab7cb0df | 2378 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2379 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2380 | if (status != NFS_OK) { |
2381 | /* Free the stateid unless the server explicitly | |
2382 | * informs us the stateid is unrecognized. */ | |
2383 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2384 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2385 | |
2386 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2387 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2388 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2389 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2390 | } |
2391 | return status; | |
2392 | } | |
2393 | ||
2394 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2395 | { | |
eb64cf96 | 2396 | int status; |
b01dd1d8 | 2397 | |
0c116cad | 2398 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2399 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2400 | if (status != NFS_OK) |
2401 | status = nfs4_open_expired(sp, state); | |
2402 | return status; | |
f062eb6c BS |
2403 | } |
2404 | #endif | |
2405 | ||
aa53ed54 JL |
2406 | /* |
2407 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2408 | * fields corresponding to attributes that were used to store the verifier. | |
2409 | * Make sure we clobber those fields in the later setattr call | |
2410 | */ | |
5334c5bd KM |
2411 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2412 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2413 | { |
5334c5bd KM |
2414 | const u32 *attrset = opendata->o_res.attrset; |
2415 | ||
2416 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2417 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2418 | sattr->ia_valid |= ATTR_ATIME; | |
2419 | ||
5334c5bd | 2420 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2421 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2422 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2423 | |
2424 | /* Except MODE, it seems harmless of setting twice. */ | |
2425 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2426 | sattr->ia_valid &= ~ATTR_MODE; | |
2427 | ||
2428 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2429 | *label = NULL; | |
aa53ed54 JL |
2430 | } |
2431 | ||
c21443c2 TM |
2432 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2433 | fmode_t fmode, | |
2434 | int flags, | |
3efb9722 | 2435 | struct nfs_open_context *ctx) |
c21443c2 TM |
2436 | { |
2437 | struct nfs4_state_owner *sp = opendata->owner; | |
2438 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2439 | struct dentry *dentry; |
c21443c2 TM |
2440 | struct nfs4_state *state; |
2441 | unsigned int seq; | |
2442 | int ret; | |
2443 | ||
2444 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2445 | ||
2446 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2447 | if (ret != 0) |
c21443c2 TM |
2448 | goto out; |
2449 | ||
2450 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2451 | ret = PTR_ERR(state); | |
2452 | if (IS_ERR(state)) | |
2453 | goto out; | |
2454 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2455 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2456 | ||
275bb307 | 2457 | dentry = opendata->dentry; |
2b0143b5 | 2458 | if (d_really_is_negative(dentry)) { |
275bb307 TM |
2459 | /* FIXME: Is this d_drop() ever needed? */ |
2460 | d_drop(dentry); | |
2461 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2462 | if (dentry == NULL) { | |
2463 | dentry = opendata->dentry; | |
2464 | } else if (dentry != ctx->dentry) { | |
2465 | dput(ctx->dentry); | |
2466 | ctx->dentry = dget(dentry); | |
2467 | } | |
2468 | nfs_set_verifier(dentry, | |
2b0143b5 | 2469 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2470 | } |
2471 | ||
c21443c2 TM |
2472 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2473 | if (ret != 0) | |
2474 | goto out; | |
2475 | ||
3efb9722 | 2476 | ctx->state = state; |
2b0143b5 | 2477 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2478 | nfs_inode_attach_open_context(ctx); |
2479 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2480 | nfs4_schedule_stateid_recovery(server, state); | |
2481 | } | |
c21443c2 TM |
2482 | out: |
2483 | return ret; | |
2484 | } | |
2485 | ||
1da177e4 | 2486 | /* |
24ac23ab | 2487 | * Returns a referenced nfs4_state |
1da177e4 | 2488 | */ |
82be417a | 2489 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2490 | struct nfs_open_context *ctx, |
82be417a AA |
2491 | int flags, |
2492 | struct iattr *sattr, | |
5bc2afc2 TM |
2493 | struct nfs4_label *label, |
2494 | int *opened) | |
1da177e4 LT |
2495 | { |
2496 | struct nfs4_state_owner *sp; | |
2497 | struct nfs4_state *state = NULL; | |
2498 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2499 | struct nfs4_opendata *opendata; |
4197a055 TM |
2500 | struct dentry *dentry = ctx->dentry; |
2501 | struct rpc_cred *cred = ctx->cred; | |
2502 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2503 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2504 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2505 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2506 | int status; |
1da177e4 LT |
2507 | |
2508 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2509 | status = -ENOMEM; |
d1e284d5 TM |
2510 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2511 | if (sp == NULL) { | |
1da177e4 LT |
2512 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2513 | goto out_err; | |
2514 | } | |
58d9714a TM |
2515 | status = nfs4_recover_expired_lease(server); |
2516 | if (status != 0) | |
b4454fe1 | 2517 | goto err_put_state_owner; |
2b0143b5 DH |
2518 | if (d_really_is_positive(dentry)) |
2519 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2520 | status = -ENOMEM; |
2b0143b5 | 2521 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2522 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2523 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2524 | label, claim, GFP_KERNEL); |
e56e0b78 | 2525 | if (opendata == NULL) |
95d35cb4 | 2526 | goto err_put_state_owner; |
1da177e4 | 2527 | |
14c43f76 DQ |
2528 | if (label) { |
2529 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2530 | if (IS_ERR(olabel)) { | |
2531 | status = PTR_ERR(olabel); | |
2532 | goto err_opendata_put; | |
2533 | } | |
2534 | } | |
2535 | ||
e911b815 TM |
2536 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2537 | if (!opendata->f_attr.mdsthreshold) { | |
2538 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2539 | if (!opendata->f_attr.mdsthreshold) | |
2540 | goto err_free_label; | |
2541 | } | |
1549210f | 2542 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2543 | } |
2b0143b5 DH |
2544 | if (d_really_is_positive(dentry)) |
2545 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2546 | |
3efb9722 | 2547 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2548 | if (status != 0) |
14c43f76 | 2549 | goto err_free_label; |
3efb9722 | 2550 | state = ctx->state; |
6168f62c | 2551 | |
efcbc04e | 2552 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2553 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2554 | nfs4_exclusive_attrset(opendata, sattr, &label); |
0ab64e0e TM |
2555 | |
2556 | nfs_fattr_init(opendata->o_res.f_attr); | |
2557 | status = nfs4_do_setattr(state->inode, cred, | |
2558 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2559 | state, label, olabel); |
2560 | if (status == 0) { | |
f044636d TM |
2561 | nfs_setattr_update_inode(state->inode, sattr, |
2562 | opendata->o_res.f_attr); | |
aa9c2669 | 2563 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2564 | } |
0ab64e0e | 2565 | } |
c5c3fb5f | 2566 | if (opened && opendata->file_created) |
5bc2afc2 | 2567 | *opened |= FILE_CREATED; |
82be417a | 2568 | |
e911b815 | 2569 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2570 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2571 | opendata->f_attr.mdsthreshold = NULL; |
2572 | } | |
82be417a | 2573 | |
14c43f76 DQ |
2574 | nfs4_label_free(olabel); |
2575 | ||
c6d00e63 | 2576 | nfs4_opendata_put(opendata); |
1da177e4 | 2577 | nfs4_put_state_owner(sp); |
1da177e4 | 2578 | return 0; |
14c43f76 DQ |
2579 | err_free_label: |
2580 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2581 | err_opendata_put: |
2582 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2583 | err_put_state_owner: |
2584 | nfs4_put_state_owner(sp); | |
1da177e4 | 2585 | out_err: |
1da177e4 LT |
2586 | return status; |
2587 | } | |
2588 | ||
2589 | ||
82be417a | 2590 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2591 | struct nfs_open_context *ctx, |
82be417a AA |
2592 | int flags, |
2593 | struct iattr *sattr, | |
5bc2afc2 TM |
2594 | struct nfs4_label *label, |
2595 | int *opened) | |
1da177e4 | 2596 | { |
49f9a0fa | 2597 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2598 | struct nfs4_exception exception = { }; |
2599 | struct nfs4_state *res; | |
2600 | int status; | |
2601 | ||
2602 | do { | |
5bc2afc2 | 2603 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2604 | res = ctx->state; |
42113a75 | 2605 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2606 | if (status == 0) |
2607 | break; | |
2608 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2609 | * book-keeping w.r.t. state-changing operations | |
2610 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2611 | * It is actually a sign of a bug on the client or on the server. | |
2612 | * | |
2613 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2614 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2615 | * have unhashed the old state_owner for us, and that we can |
2616 | * therefore safely retry using a new one. We should still warn | |
2617 | * the user though... | |
2618 | */ | |
2619 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2620 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2621 | " returned a bad sequence-id error!\n", |
2622 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2623 | exception.retry = 1; |
2624 | continue; | |
2625 | } | |
550f5747 TM |
2626 | /* |
2627 | * BAD_STATEID on OPEN means that the server cancelled our | |
2628 | * state before it received the OPEN_CONFIRM. | |
2629 | * Recover by retrying the request as per the discussion | |
2630 | * on Page 181 of RFC3530. | |
2631 | */ | |
2632 | if (status == -NFS4ERR_BAD_STATEID) { | |
2633 | exception.retry = 1; | |
2634 | continue; | |
2635 | } | |
aac00a8d TM |
2636 | if (status == -EAGAIN) { |
2637 | /* We must have found a delegation */ | |
2638 | exception.retry = 1; | |
2639 | continue; | |
2640 | } | |
49f9a0fa TM |
2641 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2642 | continue; | |
2643 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2644 | status, &exception)); |
2645 | } while (exception.retry); | |
2646 | return res; | |
2647 | } | |
2648 | ||
659bfcd6 TM |
2649 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2650 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2651 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2652 | struct nfs4_label *olabel) | |
1da177e4 | 2653 | { |
3e4f6290 | 2654 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2655 | struct nfs_setattrargs arg = { |
3e4f6290 | 2656 | .fh = NFS_FH(inode), |
1da177e4 LT |
2657 | .iap = sattr, |
2658 | .server = server, | |
2659 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2660 | .label = ilabel, |
1da177e4 LT |
2661 | }; |
2662 | struct nfs_setattrres res = { | |
2663 | .fattr = fattr, | |
1775fd3e | 2664 | .label = olabel, |
1da177e4 LT |
2665 | .server = server, |
2666 | }; | |
2667 | struct rpc_message msg = { | |
659bfcd6 TM |
2668 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2669 | .rpc_argp = &arg, | |
2670 | .rpc_resp = &res, | |
2671 | .rpc_cred = cred, | |
1da177e4 | 2672 | }; |
26e976a8 | 2673 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2674 | fmode_t fmode; |
2675 | bool truncate; | |
65e4308d | 2676 | int status; |
1da177e4 | 2677 | |
aa9c2669 DQ |
2678 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2679 | if (ilabel) | |
2680 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2681 | ||
0e574af1 | 2682 | nfs_fattr_init(fattr); |
1da177e4 | 2683 | |
ee3ae84e TM |
2684 | /* Servers should only apply open mode checks for file size changes */ |
2685 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2686 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2687 | ||
2688 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2689 | /* Use that stateid */ | |
0418dae1 | 2690 | } else if (truncate && state != NULL) { |
2a369153 TM |
2691 | struct nfs_lockowner lockowner = { |
2692 | .l_owner = current->files, | |
2693 | .l_pid = current->tgid, | |
2694 | }; | |
0418dae1 TM |
2695 | if (!nfs4_valid_open_stateid(state)) |
2696 | return -EBADF; | |
2697 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2698 | &lockowner) == -EIO) | |
2699 | return -EBADF; | |
08e9eac4 | 2700 | } else |
f597c537 | 2701 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2702 | |
7c513058 | 2703 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2704 | if (status == 0 && state != NULL) |
2705 | renew_lease(server, timestamp); | |
65e4308d | 2706 | return status; |
1da177e4 LT |
2707 | } |
2708 | ||
659bfcd6 TM |
2709 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2710 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2711 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2712 | struct nfs4_label *olabel) | |
1da177e4 | 2713 | { |
3e4f6290 | 2714 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2715 | struct nfs4_exception exception = { |
2716 | .state = state, | |
3114ea7a | 2717 | .inode = inode, |
a1d0b5ee | 2718 | }; |
1da177e4 LT |
2719 | int err; |
2720 | do { | |
1775fd3e | 2721 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2722 | trace_nfs4_setattr(inode, err); |
451146be TM |
2723 | switch (err) { |
2724 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2725 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2726 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2727 | "applying open mode checks to " | |
2728 | "a SETATTR that is not " | |
2729 | "changing file size.\n", | |
2730 | server->nfs_client->cl_hostname); | |
2731 | } | |
451146be TM |
2732 | if (state && !(state->state & FMODE_WRITE)) { |
2733 | err = -EBADF; | |
2734 | if (sattr->ia_valid & ATTR_OPEN) | |
2735 | err = -EACCES; | |
2736 | goto out; | |
2737 | } | |
2738 | } | |
2739 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2740 | } while (exception.retry); |
451146be | 2741 | out: |
1da177e4 LT |
2742 | return err; |
2743 | } | |
2744 | ||
500d701f PT |
2745 | static bool |
2746 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
2747 | { | |
2748 | if (inode == NULL || !nfs_have_layout(inode)) | |
2749 | return false; | |
2750 | ||
2751 | return pnfs_wait_on_layoutreturn(inode, task); | |
2752 | } | |
2753 | ||
1da177e4 LT |
2754 | struct nfs4_closedata { |
2755 | struct inode *inode; | |
2756 | struct nfs4_state *state; | |
2757 | struct nfs_closeargs arg; | |
2758 | struct nfs_closeres res; | |
516a6af6 | 2759 | struct nfs_fattr fattr; |
26e976a8 | 2760 | unsigned long timestamp; |
f7e8917a FI |
2761 | bool roc; |
2762 | u32 roc_barrier; | |
1da177e4 LT |
2763 | }; |
2764 | ||
963d8fe5 | 2765 | static void nfs4_free_closedata(void *data) |
9512135d | 2766 | { |
963d8fe5 TM |
2767 | struct nfs4_closedata *calldata = data; |
2768 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2769 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2770 | |
f7e8917a FI |
2771 | if (calldata->roc) |
2772 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2773 | nfs4_put_open_state(calldata->state); |
2774 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2775 | nfs4_put_state_owner(sp); |
322b2b90 | 2776 | nfs_sb_deactive(sb); |
9512135d TM |
2777 | kfree(calldata); |
2778 | } | |
2779 | ||
963d8fe5 | 2780 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2781 | { |
963d8fe5 | 2782 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2783 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2784 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2785 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2786 | |
a3ca5651 | 2787 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2788 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2789 | return; | |
42113a75 | 2790 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2791 | /* hmm. we are done with the inode, and in the process of freeing |
2792 | * the state_owner. we keep this around to process errors | |
2793 | */ | |
1da177e4 LT |
2794 | switch (task->tk_status) { |
2795 | case 0: | |
412f6c4c | 2796 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2797 | if (calldata->roc) |
f7e8917a FI |
2798 | pnfs_roc_set_barrier(state->inode, |
2799 | calldata->roc_barrier); | |
26e976a8 | 2800 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2801 | break; |
69794ad7 | 2802 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2803 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2804 | case -NFS4ERR_OLD_STATEID: |
2805 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2806 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2807 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2808 | &state->open_stateid)) { |
566fcec6 TM |
2809 | rpc_restart_call_prepare(task); |
2810 | goto out_release; | |
2811 | } | |
dc0b027d | 2812 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2813 | break; |
1da177e4 | 2814 | default: |
8478eaa1 | 2815 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2816 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2817 | goto out_release; |
2818 | } | |
1da177e4 | 2819 | } |
4a1e2feb TM |
2820 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
2821 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 2822 | out_release: |
72211dbe | 2823 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2824 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2825 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2826 | } |
2827 | ||
4ce70ada | 2828 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2829 | { |
4ce70ada | 2830 | struct nfs4_closedata *calldata = data; |
9512135d | 2831 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2832 | struct inode *inode = calldata->inode; |
aee7af35 | 2833 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2834 | int call_close = 0; |
9512135d | 2835 | |
a3ca5651 | 2836 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2837 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2838 | goto out_wait; |
003707c7 | 2839 | |
88069f77 | 2840 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2841 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2842 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2843 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2844 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2845 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2846 | /* Calculate the change in open mode */ |
cd9288ff | 2847 | calldata->arg.fmode = 0; |
e7616923 | 2848 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2849 | if (state->n_rdonly == 0) |
2850 | call_close |= is_rdonly; | |
2851 | else if (is_rdonly) | |
2852 | calldata->arg.fmode |= FMODE_READ; | |
2853 | if (state->n_wronly == 0) | |
2854 | call_close |= is_wronly; | |
2855 | else if (is_wronly) | |
2856 | calldata->arg.fmode |= FMODE_WRITE; | |
2857 | } else if (is_rdwr) | |
2858 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2859 | ||
2860 | if (calldata->arg.fmode == 0) | |
2861 | call_close |= is_rdwr; | |
2862 | ||
5d422301 TM |
2863 | if (!nfs4_valid_open_stateid(state)) |
2864 | call_close = 0; | |
4cecb76f | 2865 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2866 | |
2867 | if (!call_close) { | |
963d8fe5 | 2868 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2869 | goto out_no_action; |
9512135d | 2870 | } |
88069f77 | 2871 | |
500d701f PT |
2872 | if (nfs4_wait_on_layoutreturn(inode, task)) { |
2873 | nfs_release_seqid(calldata->arg.seqid); | |
2874 | goto out_wait; | |
2875 | } | |
2876 | ||
3c13cb5b | 2877 | if (calldata->arg.fmode == 0) |
88069f77 | 2878 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2879 | if (calldata->roc) |
2880 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2881 | ||
6ae37339 TM |
2882 | calldata->arg.share_access = |
2883 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2884 | calldata->arg.fmode, 0); | |
88069f77 | 2885 | |
516a6af6 | 2886 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2887 | calldata->timestamp = jiffies; |
7fdab069 | 2888 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2889 | &calldata->arg.seq_args, |
2890 | &calldata->res.seq_res, | |
2240a9e2 TM |
2891 | task) != 0) |
2892 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2893 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2894 | return; |
2895 | out_no_action: | |
2896 | task->tk_action = NULL; | |
2897 | out_wait: | |
2898 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2899 | } |
2900 | ||
963d8fe5 | 2901 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2902 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2903 | .rpc_call_done = nfs4_close_done, |
2904 | .rpc_release = nfs4_free_closedata, | |
2905 | }; | |
2906 | ||
fe08c546 PT |
2907 | static bool nfs4_roc(struct inode *inode) |
2908 | { | |
40dd4b7a | 2909 | if (!nfs_have_layout(inode)) |
fe08c546 | 2910 | return false; |
fe08c546 PT |
2911 | return pnfs_roc(inode); |
2912 | } | |
2913 | ||
1da177e4 LT |
2914 | /* |
2915 | * It is possible for data to be read/written from a mem-mapped file | |
2916 | * after the sys_close call (which hits the vfs layer as a flush). | |
2917 | * This means that we can't safely call nfsv4 close on a file until | |
2918 | * the inode is cleared. This in turn means that we are not good | |
2919 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2920 | * share state even when we are done with one of the three share | |
2921 | * stateid's in the inode. | |
2922 | * | |
2923 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2924 | */ | |
1f7977c1 | 2925 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2926 | { |
4a35bd41 | 2927 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2928 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2929 | struct nfs4_closedata *calldata; |
b39e625b TM |
2930 | struct nfs4_state_owner *sp = state->owner; |
2931 | struct rpc_task *task; | |
5138fde0 TM |
2932 | struct rpc_message msg = { |
2933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2934 | .rpc_cred = state->owner->so_cred, | |
2935 | }; | |
c970aa85 TM |
2936 | struct rpc_task_setup task_setup_data = { |
2937 | .rpc_client = server->client, | |
5138fde0 | 2938 | .rpc_message = &msg, |
c970aa85 | 2939 | .callback_ops = &nfs4_close_ops, |
101070ca | 2940 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2941 | .flags = RPC_TASK_ASYNC, |
2942 | }; | |
9512135d | 2943 | int status = -ENOMEM; |
1da177e4 | 2944 | |
fa940720 WAA |
2945 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2946 | &task_setup_data.rpc_client, &msg); | |
2947 | ||
8535b2be | 2948 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2949 | if (calldata == NULL) |
9512135d | 2950 | goto out; |
a9c92d6b | 2951 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2952 | calldata->inode = state->inode; |
1da177e4 | 2953 | calldata->state = state; |
4a35bd41 | 2954 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2955 | /* Serialization for the sequence id */ |
63f5f796 TM |
2956 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2957 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2958 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2959 | goto out_free_calldata; |
dc0b027d | 2960 | calldata->arg.fmode = 0; |
a65318bf | 2961 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2962 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2963 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2964 | calldata->res.server = server; |
fe08c546 | 2965 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2966 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2967 | |
1174dd1f TM |
2968 | msg.rpc_argp = &calldata->arg; |
2969 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2970 | task_setup_data.callback_data = calldata; |
2971 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2972 | if (IS_ERR(task)) |
2973 | return PTR_ERR(task); | |
a49c3c77 TM |
2974 | status = 0; |
2975 | if (wait) | |
2976 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2977 | rpc_put_task(task); |
a49c3c77 | 2978 | return status; |
9512135d TM |
2979 | out_free_calldata: |
2980 | kfree(calldata); | |
2981 | out: | |
b39e625b TM |
2982 | nfs4_put_open_state(state); |
2983 | nfs4_put_state_owner(sp); | |
9512135d | 2984 | return status; |
1da177e4 LT |
2985 | } |
2986 | ||
2b484297 | 2987 | static struct inode * |
5bc2afc2 TM |
2988 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2989 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2990 | { |
1da177e4 | 2991 | struct nfs4_state *state; |
aa9c2669 DQ |
2992 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2993 | ||
2994 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2995 | |
565277f6 | 2996 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2997 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2998 | |
2999 | nfs4_label_release_security(label); | |
3000 | ||
f46e0bd3 TM |
3001 | if (IS_ERR(state)) |
3002 | return ERR_CAST(state); | |
275bb307 | 3003 | return state->inode; |
1da177e4 LT |
3004 | } |
3005 | ||
1185a552 | 3006 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3007 | { |
3008 | if (ctx->state == NULL) | |
3009 | return; | |
3010 | if (is_sync) | |
643168c2 | 3011 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 3012 | else |
643168c2 | 3013 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 3014 | } |
1da177e4 | 3015 | |
b944dba3 TM |
3016 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3017 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 3018 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 3019 | |
1da177e4 LT |
3020 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3021 | { | |
8c61282f | 3022 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3023 | struct nfs4_server_caps_arg args = { |
3024 | .fhandle = fhandle, | |
8c61282f | 3025 | .bitmask = bitmask, |
43652ad5 | 3026 | }; |
1da177e4 LT |
3027 | struct nfs4_server_caps_res res = {}; |
3028 | struct rpc_message msg = { | |
3029 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3030 | .rpc_argp = &args, |
1da177e4 LT |
3031 | .rpc_resp = &res, |
3032 | }; | |
3033 | int status; | |
3034 | ||
8c61282f KM |
3035 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3036 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3037 | FATTR4_WORD0_LINK_SUPPORT | | |
3038 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3039 | FATTR4_WORD0_ACLSUPPORT; | |
3040 | if (minorversion) | |
3041 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3042 | ||
7c513058 | 3043 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3044 | if (status == 0) { |
b944dba3 | 3045 | /* Sanity check the server answers */ |
8c61282f | 3046 | switch (minorversion) { |
b944dba3 TM |
3047 | case 0: |
3048 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3049 | res.attr_bitmask[2] = 0; | |
3050 | break; | |
3051 | case 1: | |
3052 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3053 | break; | |
3054 | case 2: | |
3055 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3056 | } | |
1da177e4 | 3057 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
3058 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
3059 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
3060 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
3061 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
3062 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
3063 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
3064 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3065 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3066 | server->caps |= NFS_CAP_ACLS; |
3067 | if (res.has_links != 0) | |
3068 | server->caps |= NFS_CAP_HARDLINKS; | |
3069 | if (res.has_symlinks != 0) | |
3070 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
3071 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
3072 | server->caps |= NFS_CAP_FILEID; | |
3073 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
3074 | server->caps |= NFS_CAP_MODE; | |
3075 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
3076 | server->caps |= NFS_CAP_NLINK; | |
3077 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
3078 | server->caps |= NFS_CAP_OWNER; | |
3079 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
3080 | server->caps |= NFS_CAP_OWNER_GROUP; | |
3081 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
3082 | server->caps |= NFS_CAP_ATIME; | |
3083 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
3084 | server->caps |= NFS_CAP_CTIME; | |
3085 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
3086 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
3087 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3088 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3089 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3090 | #endif | |
3091 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
3092 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3093 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3094 | |
a65318bf TM |
3095 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3096 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3097 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3098 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
3099 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3100 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 3101 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3102 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3103 | } |
cccef3b9 | 3104 | |
1da177e4 LT |
3105 | return status; |
3106 | } | |
3107 | ||
55a97593 | 3108 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
3109 | { |
3110 | struct nfs4_exception exception = { }; | |
3111 | int err; | |
3112 | do { | |
3113 | err = nfs4_handle_exception(server, | |
3114 | _nfs4_server_capabilities(server, fhandle), | |
3115 | &exception); | |
3116 | } while (exception.retry); | |
3117 | return err; | |
3118 | } | |
3119 | ||
3120 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3121 | struct nfs_fsinfo *info) | |
3122 | { | |
aa9c2669 | 3123 | u32 bitmask[3]; |
1da177e4 | 3124 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3125 | .bitmask = bitmask, |
1da177e4 LT |
3126 | }; |
3127 | struct nfs4_lookup_res res = { | |
3128 | .server = server, | |
0e574af1 | 3129 | .fattr = info->fattr, |
1da177e4 LT |
3130 | .fh = fhandle, |
3131 | }; | |
3132 | struct rpc_message msg = { | |
3133 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3134 | .rpc_argp = &args, | |
3135 | .rpc_resp = &res, | |
3136 | }; | |
008f55d0 | 3137 | |
aa9c2669 DQ |
3138 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3139 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3140 | /* | |
3141 | * Process the label in the upcoming getfattr | |
3142 | */ | |
3143 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3144 | ||
0e574af1 | 3145 | nfs_fattr_init(info->fattr); |
7c513058 | 3146 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3147 | } |
3148 | ||
3149 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3150 | struct nfs_fsinfo *info) | |
3151 | { | |
3152 | struct nfs4_exception exception = { }; | |
3153 | int err; | |
3154 | do { | |
fb8a5ba8 | 3155 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3156 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3157 | switch (err) { |
3158 | case 0: | |
3159 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3160 | goto out; |
fb8a5ba8 BS |
3161 | default: |
3162 | err = nfs4_handle_exception(server, err, &exception); | |
3163 | } | |
1da177e4 | 3164 | } while (exception.retry); |
05e9cfb4 | 3165 | out: |
1da177e4 LT |
3166 | return err; |
3167 | } | |
3168 | ||
8f70e95f BS |
3169 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3170 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3171 | { | |
c2190661 TM |
3172 | struct rpc_auth_create_args auth_args = { |
3173 | .pseudoflavor = flavor, | |
3174 | }; | |
8f70e95f BS |
3175 | struct rpc_auth *auth; |
3176 | int ret; | |
3177 | ||
c2190661 | 3178 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3179 | if (IS_ERR(auth)) { |
75bc8821 | 3180 | ret = -EACCES; |
8f70e95f BS |
3181 | goto out; |
3182 | } | |
3183 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3184 | out: |
3185 | return ret; | |
3186 | } | |
3187 | ||
9a744ba3 CL |
3188 | /* |
3189 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3190 | * | |
3191 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3192 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3193 | * | |
3194 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3195 | * negative errno value. | |
3196 | */ | |
801a16dc | 3197 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3198 | struct nfs_fsinfo *info) |
1da177e4 | 3199 | { |
9a744ba3 CL |
3200 | /* Per 3530bis 15.33.5 */ |
3201 | static const rpc_authflavor_t flav_array[] = { | |
3202 | RPC_AUTH_GSS_KRB5P, | |
3203 | RPC_AUTH_GSS_KRB5I, | |
3204 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3205 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3206 | RPC_AUTH_NULL, |
3207 | }; | |
3208 | int status = -EPERM; | |
3209 | size_t i; | |
6a1a1e34 | 3210 | |
4d4b69dd WAA |
3211 | if (server->auth_info.flavor_len > 0) { |
3212 | /* try each flavor specified by user */ | |
3213 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3214 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3215 | server->auth_info.flavors[i]); | |
3216 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3217 | continue; | |
3218 | break; | |
3219 | } | |
3220 | } else { | |
3221 | /* no flavors specified by user, try default list */ | |
3222 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3223 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3224 | flav_array[i]); | |
3225 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3226 | continue; | |
3227 | break; | |
3228 | } | |
8f70e95f | 3229 | } |
9a744ba3 | 3230 | |
fb8a5ba8 BS |
3231 | /* |
3232 | * -EACCESS could mean that the user doesn't have correct permissions | |
3233 | * to access the mount. It could also mean that we tried to mount | |
3234 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3235 | * existing mount programs don't handle -EACCES very well so it should | |
3236 | * be mapped to -EPERM instead. | |
3237 | */ | |
3238 | if (status == -EACCES) | |
3239 | status = -EPERM; | |
801a16dc BS |
3240 | return status; |
3241 | } | |
3242 | ||
2ed4b95b CL |
3243 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3244 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3245 | { | |
3246 | int mv = server->nfs_client->cl_minorversion; | |
3247 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3248 | } | |
3249 | ||
3250 | /** | |
3251 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3252 | * @server: initialized nfs_server handle | |
3253 | * @fhandle: we fill in the pseudo-fs root file handle | |
3254 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3255 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3256 | * |
3257 | * Returns zero on success, or a negative errno. | |
801a16dc | 3258 | */ |
3028eb2b | 3259 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3260 | struct nfs_fsinfo *info, |
3261 | bool auth_probe) | |
801a16dc | 3262 | { |
c7757074 | 3263 | int status = 0; |
2ed4b95b | 3264 | |
c7757074 | 3265 | if (!auth_probe) |
5e6b1990 | 3266 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3267 | |
3268 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
2ed4b95b CL |
3269 | status = nfs4_do_find_root_sec(server, fhandle, info); |
3270 | ||
1da177e4 LT |
3271 | if (status == 0) |
3272 | status = nfs4_server_capabilities(server, fhandle); | |
3273 | if (status == 0) | |
3274 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3275 | |
c12e87f4 | 3276 | return nfs4_map_errors(status); |
1da177e4 LT |
3277 | } |
3278 | ||
bae36241 BS |
3279 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3280 | struct nfs_fsinfo *info) | |
3281 | { | |
3282 | int error; | |
3283 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3284 | struct nfs4_label *label = NULL; |
bae36241 BS |
3285 | |
3286 | error = nfs4_server_capabilities(server, mntfh); | |
3287 | if (error < 0) { | |
3288 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3289 | return error; | |
3290 | } | |
3291 | ||
14c43f76 DQ |
3292 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3293 | if (IS_ERR(label)) | |
3294 | return PTR_ERR(label); | |
3295 | ||
1775fd3e | 3296 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3297 | if (error < 0) { |
3298 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3299 | goto err_free_label; |
bae36241 BS |
3300 | } |
3301 | ||
3302 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3303 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3304 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3305 | ||
14c43f76 DQ |
3306 | err_free_label: |
3307 | nfs4_label_free(label); | |
3308 | ||
bae36241 BS |
3309 | return error; |
3310 | } | |
3311 | ||
6b97fd3d MN |
3312 | /* |
3313 | * Get locations and (maybe) other attributes of a referral. | |
3314 | * Note that we'll actually follow the referral later when | |
3315 | * we detect fsid mismatch in inode revalidation | |
3316 | */ | |
f05d147f BS |
3317 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3318 | const struct qstr *name, struct nfs_fattr *fattr, | |
3319 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3320 | { |
3321 | int status = -ENOMEM; | |
3322 | struct page *page = NULL; | |
3323 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3324 | |
3325 | page = alloc_page(GFP_KERNEL); | |
3326 | if (page == NULL) | |
3327 | goto out; | |
3328 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3329 | if (locations == NULL) | |
3330 | goto out; | |
3331 | ||
f05d147f | 3332 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3333 | if (status != 0) |
3334 | goto out; | |
519ae255 CL |
3335 | |
3336 | /* | |
3337 | * If the fsid didn't change, this is a migration event, not a | |
3338 | * referral. Cause us to drop into the exception handler, which | |
3339 | * will kick off migration recovery. | |
3340 | */ | |
6b97fd3d | 3341 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3342 | dprintk("%s: server did not return a different fsid for" |
3343 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3344 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3345 | goto out; |
3346 | } | |
533eb461 AA |
3347 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3348 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3349 | |
533eb461 | 3350 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3351 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3352 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3353 | out: | |
3354 | if (page) | |
3355 | __free_page(page); | |
5d7ca35a | 3356 | kfree(locations); |
6b97fd3d MN |
3357 | return status; |
3358 | } | |
3359 | ||
1775fd3e DQ |
3360 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3361 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3362 | { |
3363 | struct nfs4_getattr_arg args = { | |
3364 | .fh = fhandle, | |
3365 | .bitmask = server->attr_bitmask, | |
3366 | }; | |
3367 | struct nfs4_getattr_res res = { | |
3368 | .fattr = fattr, | |
1775fd3e | 3369 | .label = label, |
1da177e4 LT |
3370 | .server = server, |
3371 | }; | |
3372 | struct rpc_message msg = { | |
3373 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3374 | .rpc_argp = &args, | |
3375 | .rpc_resp = &res, | |
3376 | }; | |
aa9c2669 DQ |
3377 | |
3378 | args.bitmask = nfs4_bitmask(server, label); | |
3379 | ||
0e574af1 | 3380 | nfs_fattr_init(fattr); |
7c513058 | 3381 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3382 | } |
3383 | ||
1775fd3e DQ |
3384 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3385 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3386 | { |
3387 | struct nfs4_exception exception = { }; | |
3388 | int err; | |
3389 | do { | |
b5f875a9 TM |
3390 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3391 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3392 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3393 | &exception); |
3394 | } while (exception.retry); | |
3395 | return err; | |
3396 | } | |
3397 | ||
3398 | /* | |
3399 | * The file is not closed if it is opened due to the a request to change | |
3400 | * the size of the file. The open call will not be needed once the | |
3401 | * VFS layer lookup-intents are implemented. | |
3402 | * | |
3403 | * Close is called when the inode is destroyed. | |
3404 | * If we haven't opened the file for O_WRONLY, we | |
3405 | * need to in the size_change case to obtain a stateid. | |
3406 | * | |
3407 | * Got race? | |
3408 | * Because OPEN is always done by name in nfsv4, it is | |
3409 | * possible that we opened a different file by the same | |
3410 | * name. We can recognize this race condition, but we | |
3411 | * can't do anything about it besides returning an error. | |
3412 | * | |
3413 | * This will be fixed with VFS changes (lookup-intent). | |
3414 | */ | |
3415 | static int | |
3416 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3417 | struct iattr *sattr) | |
3418 | { | |
2b0143b5 | 3419 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3420 | struct rpc_cred *cred = NULL; |
d530838b | 3421 | struct nfs4_state *state = NULL; |
14c43f76 | 3422 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3423 | int status; |
3424 | ||
88ac815c PT |
3425 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3426 | sattr->ia_valid & ATTR_SIZE && | |
3427 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3428 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3429 | |
0e574af1 | 3430 | nfs_fattr_init(fattr); |
1da177e4 | 3431 | |
2669940d AA |
3432 | /* Deal with open(O_TRUNC) */ |
3433 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3434 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3435 | |
3436 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3437 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3438 | return 0; |
3439 | ||
d530838b | 3440 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3441 | if (sattr->ia_valid & ATTR_FILE) { |
3442 | struct nfs_open_context *ctx; | |
3443 | ||
3444 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3445 | if (ctx) { |
3446 | cred = ctx->cred; | |
3447 | state = ctx->state; | |
3448 | } | |
659bfcd6 | 3449 | } |
08e9eac4 | 3450 | |
14c43f76 DQ |
3451 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3452 | if (IS_ERR(label)) | |
3453 | return PTR_ERR(label); | |
3454 | ||
3455 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3456 | if (status == 0) { |
f044636d | 3457 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3458 | nfs_setsecurity(inode, fattr, label); |
3459 | } | |
14c43f76 | 3460 | nfs4_label_free(label); |
1da177e4 LT |
3461 | return status; |
3462 | } | |
3463 | ||
0c2e53f1 TM |
3464 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3465 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3466 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3467 | { |
0c2e53f1 | 3468 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3469 | int status; |
3470 | struct nfs4_lookup_arg args = { | |
3471 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3472 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3473 | .name = name, |
3474 | }; | |
3475 | struct nfs4_lookup_res res = { | |
3476 | .server = server, | |
3477 | .fattr = fattr, | |
aa9c2669 | 3478 | .label = label, |
2b3de441 DH |
3479 | .fh = fhandle, |
3480 | }; | |
3481 | struct rpc_message msg = { | |
3482 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3483 | .rpc_argp = &args, | |
3484 | .rpc_resp = &res, | |
3485 | }; | |
3486 | ||
aa9c2669 DQ |
3487 | args.bitmask = nfs4_bitmask(server, label); |
3488 | ||
2b3de441 DH |
3489 | nfs_fattr_init(fattr); |
3490 | ||
1da177e4 | 3491 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3492 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3493 | dprintk("NFS reply lookup: %d\n", status); |
3494 | return status; | |
3495 | } | |
3496 | ||
72de53ec | 3497 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3498 | { |
7ebb9315 | 3499 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3500 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3501 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3502 | fattr->nlink = 2; | |
3503 | } | |
3504 | ||
72de53ec BS |
3505 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3506 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3507 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3508 | { |
3509 | struct nfs4_exception exception = { }; | |
72de53ec | 3510 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3511 | int err; |
3512 | do { | |
1775fd3e | 3513 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3514 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3515 | switch (err) { |
08ef7bd3 | 3516 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3517 | err = -ENOENT; |
3518 | goto out; | |
0c2e53f1 | 3519 | case -NFS4ERR_MOVED: |
f05d147f | 3520 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3521 | if (err == -NFS4ERR_MOVED) |
3522 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3523 | goto out; |
0c2e53f1 | 3524 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3525 | err = -EPERM; |
3526 | if (client != *clnt) | |
3527 | goto out; | |
66b06860 | 3528 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3529 | if (IS_ERR(client)) |
3530 | return PTR_ERR(client); | |
3531 | ||
3532 | exception.retry = 1; | |
3533 | break; | |
3534 | default: | |
3535 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3536 | } |
1da177e4 | 3537 | } while (exception.retry); |
72de53ec BS |
3538 | |
3539 | out: | |
3540 | if (err == 0) | |
3541 | *clnt = client; | |
3542 | else if (client != *clnt) | |
3543 | rpc_shutdown_client(client); | |
3544 | ||
1da177e4 LT |
3545 | return err; |
3546 | } | |
3547 | ||
80a16b21 | 3548 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3549 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3550 | struct nfs4_label *label) | |
72de53ec BS |
3551 | { |
3552 | int status; | |
3553 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3554 | ||
1775fd3e | 3555 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3556 | if (client != NFS_CLIENT(dir)) { |
3557 | rpc_shutdown_client(client); | |
3558 | nfs_fixup_secinfo_attributes(fattr); | |
3559 | } | |
3560 | return status; | |
3561 | } | |
3562 | ||
f05d147f BS |
3563 | struct rpc_clnt * |
3564 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3565 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3566 | { | |
b72888cb | 3567 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3568 | int status; |
f05d147f | 3569 | |
1775fd3e | 3570 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3571 | if (status < 0) |
f05d147f | 3572 | return ERR_PTR(status); |
b72888cb | 3573 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3574 | } |
3575 | ||
1da177e4 LT |
3576 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3577 | { | |
76b32999 | 3578 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3579 | struct nfs4_accessargs args = { |
3580 | .fh = NFS_FH(inode), | |
a4980e78 | 3581 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3582 | }; |
3583 | struct nfs4_accessres res = { | |
3584 | .server = server, | |
1da177e4 | 3585 | }; |
1da177e4 LT |
3586 | struct rpc_message msg = { |
3587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3588 | .rpc_argp = &args, | |
3589 | .rpc_resp = &res, | |
3590 | .rpc_cred = entry->cred, | |
3591 | }; | |
3592 | int mode = entry->mask; | |
aa9c2669 | 3593 | int status = 0; |
1da177e4 LT |
3594 | |
3595 | /* | |
3596 | * Determine which access bits we want to ask for... | |
3597 | */ | |
3598 | if (mode & MAY_READ) | |
3599 | args.access |= NFS4_ACCESS_READ; | |
3600 | if (S_ISDIR(inode->i_mode)) { | |
3601 | if (mode & MAY_WRITE) | |
3602 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3603 | if (mode & MAY_EXEC) | |
3604 | args.access |= NFS4_ACCESS_LOOKUP; | |
3605 | } else { | |
3606 | if (mode & MAY_WRITE) | |
3607 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3608 | if (mode & MAY_EXEC) | |
3609 | args.access |= NFS4_ACCESS_EXECUTE; | |
3610 | } | |
c407d41a TM |
3611 | |
3612 | res.fattr = nfs_alloc_fattr(); | |
3613 | if (res.fattr == NULL) | |
3614 | return -ENOMEM; | |
3615 | ||
7c513058 | 3616 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3617 | if (!status) { |
6168f62c | 3618 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3619 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3620 | } |
c407d41a | 3621 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3622 | return status; |
3623 | } | |
3624 | ||
3625 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3626 | { | |
3627 | struct nfs4_exception exception = { }; | |
3628 | int err; | |
3629 | do { | |
c1578b76 TM |
3630 | err = _nfs4_proc_access(inode, entry); |
3631 | trace_nfs4_access(inode, err); | |
3632 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3633 | &exception); |
3634 | } while (exception.retry); | |
3635 | return err; | |
3636 | } | |
3637 | ||
3638 | /* | |
3639 | * TODO: For the time being, we don't try to get any attributes | |
3640 | * along with any of the zero-copy operations READ, READDIR, | |
3641 | * READLINK, WRITE. | |
3642 | * | |
3643 | * In the case of the first three, we want to put the GETATTR | |
3644 | * after the read-type operation -- this is because it is hard | |
3645 | * to predict the length of a GETATTR response in v4, and thus | |
3646 | * align the READ data correctly. This means that the GETATTR | |
3647 | * may end up partially falling into the page cache, and we should | |
3648 | * shift it into the 'tail' of the xdr_buf before processing. | |
3649 | * To do this efficiently, we need to know the total length | |
3650 | * of data received, which doesn't seem to be available outside | |
3651 | * of the RPC layer. | |
3652 | * | |
3653 | * In the case of WRITE, we also want to put the GETATTR after | |
3654 | * the operation -- in this case because we want to make sure | |
140150db | 3655 | * we get the post-operation mtime and size. |
1da177e4 LT |
3656 | * |
3657 | * Both of these changes to the XDR layer would in fact be quite | |
3658 | * minor, but I decided to leave them for a subsequent patch. | |
3659 | */ | |
3660 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3661 | unsigned int pgbase, unsigned int pglen) | |
3662 | { | |
3663 | struct nfs4_readlink args = { | |
3664 | .fh = NFS_FH(inode), | |
3665 | .pgbase = pgbase, | |
3666 | .pglen = pglen, | |
3667 | .pages = &page, | |
3668 | }; | |
f50c7000 | 3669 | struct nfs4_readlink_res res; |
1da177e4 LT |
3670 | struct rpc_message msg = { |
3671 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3672 | .rpc_argp = &args, | |
f50c7000 | 3673 | .rpc_resp = &res, |
1da177e4 LT |
3674 | }; |
3675 | ||
7c513058 | 3676 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3677 | } |
3678 | ||
3679 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3680 | unsigned int pgbase, unsigned int pglen) | |
3681 | { | |
3682 | struct nfs4_exception exception = { }; | |
3683 | int err; | |
3684 | do { | |
c1578b76 TM |
3685 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3686 | trace_nfs4_readlink(inode, err); | |
3687 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3688 | &exception); |
3689 | } while (exception.retry); | |
3690 | return err; | |
3691 | } | |
3692 | ||
1da177e4 | 3693 | /* |
8867fe58 | 3694 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3695 | */ |
1da177e4 LT |
3696 | static int |
3697 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3698 | int flags) |
1da177e4 | 3699 | { |
aa9c2669 | 3700 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3701 | struct nfs_open_context *ctx; |
1da177e4 | 3702 | struct nfs4_state *state; |
1da177e4 LT |
3703 | int status = 0; |
3704 | ||
8867fe58 MS |
3705 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3706 | if (IS_ERR(ctx)) | |
3707 | return PTR_ERR(ctx); | |
3708 | ||
aa9c2669 DQ |
3709 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3710 | ||
a8a5da99 | 3711 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3712 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3713 | if (IS_ERR(state)) { |
3714 | status = PTR_ERR(state); | |
c0204fd2 | 3715 | goto out; |
1da177e4 | 3716 | } |
1da177e4 | 3717 | out: |
aa9c2669 | 3718 | nfs4_label_release_security(ilabel); |
8867fe58 | 3719 | put_nfs_open_context(ctx); |
1da177e4 LT |
3720 | return status; |
3721 | } | |
3722 | ||
3723 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3724 | { | |
16e42959 | 3725 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3726 | struct nfs_removeargs args = { |
1da177e4 | 3727 | .fh = NFS_FH(dir), |
26fe5750 | 3728 | .name = *name, |
16e42959 | 3729 | }; |
4fdc17b2 | 3730 | struct nfs_removeres res = { |
16e42959 | 3731 | .server = server, |
1da177e4 | 3732 | }; |
1da177e4 | 3733 | struct rpc_message msg = { |
4fdc17b2 TM |
3734 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3735 | .rpc_argp = &args, | |
3736 | .rpc_resp = &res, | |
1da177e4 | 3737 | }; |
778d2817 | 3738 | int status; |
1da177e4 | 3739 | |
7c513058 | 3740 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3741 | if (status == 0) |
16e42959 | 3742 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3743 | return status; |
3744 | } | |
3745 | ||
3746 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3747 | { | |
3748 | struct nfs4_exception exception = { }; | |
3749 | int err; | |
3750 | do { | |
078ea3df TM |
3751 | err = _nfs4_proc_remove(dir, name); |
3752 | trace_nfs4_remove(dir, name, err); | |
3753 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3754 | &exception); |
3755 | } while (exception.retry); | |
3756 | return err; | |
3757 | } | |
3758 | ||
e4eff1a6 | 3759 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3760 | { |
e4eff1a6 TM |
3761 | struct nfs_server *server = NFS_SERVER(dir); |
3762 | struct nfs_removeargs *args = msg->rpc_argp; | |
3763 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3764 | |
e4eff1a6 | 3765 | res->server = server; |
1da177e4 | 3766 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3767 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3768 | |
3769 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3770 | } |
3771 | ||
34e137cc BS |
3772 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3773 | { | |
d9afbd1b TM |
3774 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3775 | &data->args.seq_args, | |
3776 | &data->res.seq_res, | |
3777 | task); | |
1da177e4 LT |
3778 | } |
3779 | ||
e4eff1a6 | 3780 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3781 | { |
078ea3df TM |
3782 | struct nfs_unlinkdata *data = task->tk_calldata; |
3783 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3784 | |
14516c3a TM |
3785 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3786 | return 0; | |
8478eaa1 N |
3787 | if (nfs4_async_handle_error(task, res->server, NULL, |
3788 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3789 | return 0; |
3790 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3791 | return 1; |
1da177e4 LT |
3792 | } |
3793 | ||
d3d4152a JL |
3794 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3795 | { | |
3796 | struct nfs_server *server = NFS_SERVER(dir); | |
3797 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3798 | struct nfs_renameres *res = msg->rpc_resp; | |
3799 | ||
3800 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3801 | res->server = server; |
a9c92d6b | 3802 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3803 | } |
3804 | ||
c6bfa1a1 BS |
3805 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3806 | { | |
d9afbd1b TM |
3807 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3808 | &data->args.seq_args, | |
3809 | &data->res.seq_res, | |
3810 | task); | |
d3d4152a JL |
3811 | } |
3812 | ||
3813 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3814 | struct inode *new_dir) | |
3815 | { | |
fbc6f7c2 TM |
3816 | struct nfs_renamedata *data = task->tk_calldata; |
3817 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3818 | |
3819 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3820 | return 0; | |
8478eaa1 | 3821 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3822 | return 0; |
3823 | ||
3824 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3825 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3826 | return 1; |
3827 | } | |
3828 | ||
1da177e4 LT |
3829 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3830 | { | |
91ba2eee | 3831 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3832 | struct nfs4_link_arg arg = { |
3833 | .fh = NFS_FH(inode), | |
3834 | .dir_fh = NFS_FH(dir), | |
3835 | .name = name, | |
91ba2eee TM |
3836 | .bitmask = server->attr_bitmask, |
3837 | }; | |
91ba2eee TM |
3838 | struct nfs4_link_res res = { |
3839 | .server = server, | |
1775fd3e | 3840 | .label = NULL, |
1da177e4 | 3841 | }; |
1da177e4 LT |
3842 | struct rpc_message msg = { |
3843 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3844 | .rpc_argp = &arg, | |
91ba2eee | 3845 | .rpc_resp = &res, |
1da177e4 | 3846 | }; |
136f2627 TM |
3847 | int status = -ENOMEM; |
3848 | ||
3849 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3850 | if (res.fattr == NULL) |
136f2627 | 3851 | goto out; |
1da177e4 | 3852 | |
14c43f76 DQ |
3853 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3854 | if (IS_ERR(res.label)) { | |
3855 | status = PTR_ERR(res.label); | |
3856 | goto out; | |
3857 | } | |
aa9c2669 | 3858 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3859 | |
7c513058 | 3860 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3861 | if (!status) { |
3862 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3863 | status = nfs_post_op_update_inode(inode, res.fattr); |
3864 | if (!status) | |
3865 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3866 | } |
14c43f76 DQ |
3867 | |
3868 | ||
3869 | nfs4_label_free(res.label); | |
3870 | ||
136f2627 | 3871 | out: |
136f2627 | 3872 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3873 | return status; |
3874 | } | |
3875 | ||
3876 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3877 | { | |
3878 | struct nfs4_exception exception = { }; | |
3879 | int err; | |
3880 | do { | |
3881 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3882 | _nfs4_proc_link(inode, dir, name), | |
3883 | &exception); | |
3884 | } while (exception.retry); | |
3885 | return err; | |
3886 | } | |
3887 | ||
57dc9a57 TM |
3888 | struct nfs4_createdata { |
3889 | struct rpc_message msg; | |
3890 | struct nfs4_create_arg arg; | |
3891 | struct nfs4_create_res res; | |
3892 | struct nfs_fh fh; | |
3893 | struct nfs_fattr fattr; | |
1775fd3e | 3894 | struct nfs4_label *label; |
57dc9a57 TM |
3895 | }; |
3896 | ||
3897 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3898 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3899 | { | |
3900 | struct nfs4_createdata *data; | |
3901 | ||
3902 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3903 | if (data != NULL) { | |
3904 | struct nfs_server *server = NFS_SERVER(dir); | |
3905 | ||
14c43f76 DQ |
3906 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3907 | if (IS_ERR(data->label)) | |
3908 | goto out_free; | |
3909 | ||
57dc9a57 TM |
3910 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3911 | data->msg.rpc_argp = &data->arg; | |
3912 | data->msg.rpc_resp = &data->res; | |
3913 | data->arg.dir_fh = NFS_FH(dir); | |
3914 | data->arg.server = server; | |
3915 | data->arg.name = name; | |
3916 | data->arg.attrs = sattr; | |
3917 | data->arg.ftype = ftype; | |
aa9c2669 | 3918 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3919 | data->res.server = server; |
3920 | data->res.fh = &data->fh; | |
3921 | data->res.fattr = &data->fattr; | |
1775fd3e | 3922 | data->res.label = data->label; |
57dc9a57 | 3923 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3924 | } |
3925 | return data; | |
14c43f76 DQ |
3926 | out_free: |
3927 | kfree(data); | |
3928 | return NULL; | |
57dc9a57 TM |
3929 | } |
3930 | ||
3931 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3932 | { | |
7c513058 | 3933 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3934 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3935 | if (status == 0) { |
3936 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3937 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3938 | } |
3939 | return status; | |
3940 | } | |
3941 | ||
3942 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3943 | { | |
14c43f76 | 3944 | nfs4_label_free(data->label); |
57dc9a57 TM |
3945 | kfree(data); |
3946 | } | |
3947 | ||
4f390c15 | 3948 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3949 | struct page *page, unsigned int len, struct iattr *sattr, |
3950 | struct nfs4_label *label) | |
1da177e4 | 3951 | { |
57dc9a57 TM |
3952 | struct nfs4_createdata *data; |
3953 | int status = -ENAMETOOLONG; | |
1da177e4 | 3954 | |
94a6d753 | 3955 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3956 | goto out; |
4f390c15 | 3957 | |
57dc9a57 TM |
3958 | status = -ENOMEM; |
3959 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3960 | if (data == NULL) | |
3961 | goto out; | |
3962 | ||
3963 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3964 | data->arg.u.symlink.pages = &page; | |
3965 | data->arg.u.symlink.len = len; | |
1775fd3e | 3966 | data->arg.label = label; |
1da177e4 | 3967 | |
57dc9a57 TM |
3968 | status = nfs4_do_create(dir, dentry, data); |
3969 | ||
3970 | nfs4_free_createdata(data); | |
3971 | out: | |
1da177e4 LT |
3972 | return status; |
3973 | } | |
3974 | ||
4f390c15 | 3975 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3976 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3977 | { |
3978 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3979 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3980 | int err; |
aa9c2669 DQ |
3981 | |
3982 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3983 | ||
1da177e4 | 3984 | do { |
078ea3df TM |
3985 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3986 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3987 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3988 | &exception); |
3989 | } while (exception.retry); | |
aa9c2669 DQ |
3990 | |
3991 | nfs4_label_release_security(label); | |
1da177e4 LT |
3992 | return err; |
3993 | } | |
3994 | ||
3995 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3996 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3997 | { |
57dc9a57 TM |
3998 | struct nfs4_createdata *data; |
3999 | int status = -ENOMEM; | |
1da177e4 | 4000 | |
57dc9a57 TM |
4001 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
4002 | if (data == NULL) | |
4003 | goto out; | |
4004 | ||
1775fd3e | 4005 | data->arg.label = label; |
57dc9a57 TM |
4006 | status = nfs4_do_create(dir, dentry, data); |
4007 | ||
4008 | nfs4_free_createdata(data); | |
4009 | out: | |
1da177e4 LT |
4010 | return status; |
4011 | } | |
4012 | ||
4013 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
4014 | struct iattr *sattr) | |
4015 | { | |
4016 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4017 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4018 | int err; |
a8a5da99 | 4019 | |
aa9c2669 DQ |
4020 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4021 | ||
a8a5da99 | 4022 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4023 | do { |
078ea3df TM |
4024 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
4025 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
4026 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4027 | &exception); |
4028 | } while (exception.retry); | |
aa9c2669 DQ |
4029 | nfs4_label_release_security(label); |
4030 | ||
1da177e4 LT |
4031 | return err; |
4032 | } | |
4033 | ||
4034 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4035 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 4036 | { |
2b0143b5 | 4037 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
4038 | struct nfs4_readdir_arg args = { |
4039 | .fh = NFS_FH(dir), | |
56e4ebf8 | 4040 | .pages = pages, |
1da177e4 LT |
4041 | .pgbase = 0, |
4042 | .count = count, | |
2b0143b5 | 4043 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 4044 | .plus = plus, |
1da177e4 LT |
4045 | }; |
4046 | struct nfs4_readdir_res res; | |
4047 | struct rpc_message msg = { | |
4048 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
4049 | .rpc_argp = &args, | |
4050 | .rpc_resp = &res, | |
4051 | .rpc_cred = cred, | |
4052 | }; | |
4053 | int status; | |
4054 | ||
6de1472f AV |
4055 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
4056 | dentry, | |
eadf4598 | 4057 | (unsigned long long)cookie); |
c3f52af3 | 4058 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 4059 | res.pgbase = args.pgbase; |
7c513058 | 4060 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 4061 | if (status >= 0) { |
c3f52af3 | 4062 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
4063 | status += args.pgbase; |
4064 | } | |
c4812998 TM |
4065 | |
4066 | nfs_invalidate_atime(dir); | |
4067 | ||
3110ff80 | 4068 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
4069 | return status; |
4070 | } | |
4071 | ||
4072 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4073 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
4074 | { |
4075 | struct nfs4_exception exception = { }; | |
4076 | int err; | |
4077 | do { | |
c1578b76 TM |
4078 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
4079 | pages, count, plus); | |
2b0143b5 DH |
4080 | trace_nfs4_readdir(d_inode(dentry), err); |
4081 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
4082 | &exception); |
4083 | } while (exception.retry); | |
4084 | return err; | |
4085 | } | |
4086 | ||
4087 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 4088 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 4089 | { |
57dc9a57 TM |
4090 | struct nfs4_createdata *data; |
4091 | int mode = sattr->ia_mode; | |
4092 | int status = -ENOMEM; | |
1da177e4 | 4093 | |
57dc9a57 TM |
4094 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
4095 | if (data == NULL) | |
4096 | goto out; | |
4097 | ||
1da177e4 | 4098 | if (S_ISFIFO(mode)) |
57dc9a57 | 4099 | data->arg.ftype = NF4FIFO; |
1da177e4 | 4100 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
4101 | data->arg.ftype = NF4BLK; |
4102 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4103 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
4104 | } |
4105 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
4106 | data->arg.ftype = NF4CHR; |
4107 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4108 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
4109 | } else if (!S_ISSOCK(mode)) { |
4110 | status = -EINVAL; | |
4111 | goto out_free; | |
1da177e4 | 4112 | } |
1775fd3e | 4113 | |
aa9c2669 | 4114 | data->arg.label = label; |
57dc9a57 | 4115 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4116 | out_free: |
57dc9a57 TM |
4117 | nfs4_free_createdata(data); |
4118 | out: | |
1da177e4 LT |
4119 | return status; |
4120 | } | |
4121 | ||
4122 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4123 | struct iattr *sattr, dev_t rdev) | |
4124 | { | |
4125 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4126 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4127 | int err; |
a8a5da99 | 4128 | |
aa9c2669 DQ |
4129 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4130 | ||
a8a5da99 | 4131 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4132 | do { |
078ea3df TM |
4133 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4134 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4135 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4136 | &exception); |
4137 | } while (exception.retry); | |
aa9c2669 DQ |
4138 | |
4139 | nfs4_label_release_security(label); | |
4140 | ||
1da177e4 LT |
4141 | return err; |
4142 | } | |
4143 | ||
4144 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4145 | struct nfs_fsstat *fsstat) | |
4146 | { | |
4147 | struct nfs4_statfs_arg args = { | |
4148 | .fh = fhandle, | |
4149 | .bitmask = server->attr_bitmask, | |
4150 | }; | |
24ad148a BH |
4151 | struct nfs4_statfs_res res = { |
4152 | .fsstat = fsstat, | |
4153 | }; | |
1da177e4 LT |
4154 | struct rpc_message msg = { |
4155 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4156 | .rpc_argp = &args, | |
24ad148a | 4157 | .rpc_resp = &res, |
1da177e4 LT |
4158 | }; |
4159 | ||
0e574af1 | 4160 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4161 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4162 | } |
4163 | ||
4164 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4165 | { | |
4166 | struct nfs4_exception exception = { }; | |
4167 | int err; | |
4168 | do { | |
4169 | err = nfs4_handle_exception(server, | |
4170 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4171 | &exception); | |
4172 | } while (exception.retry); | |
4173 | return err; | |
4174 | } | |
4175 | ||
4176 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4177 | struct nfs_fsinfo *fsinfo) | |
4178 | { | |
4179 | struct nfs4_fsinfo_arg args = { | |
4180 | .fh = fhandle, | |
4181 | .bitmask = server->attr_bitmask, | |
4182 | }; | |
3dda5e43 BH |
4183 | struct nfs4_fsinfo_res res = { |
4184 | .fsinfo = fsinfo, | |
4185 | }; | |
1da177e4 LT |
4186 | struct rpc_message msg = { |
4187 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4188 | .rpc_argp = &args, | |
3dda5e43 | 4189 | .rpc_resp = &res, |
1da177e4 LT |
4190 | }; |
4191 | ||
7c513058 | 4192 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4193 | } |
4194 | ||
4195 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4196 | { | |
4197 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4198 | unsigned long now = jiffies; |
1da177e4 LT |
4199 | int err; |
4200 | ||
4201 | do { | |
83ca7f5a | 4202 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4203 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4204 | if (err == 0) { |
4205 | struct nfs_client *clp = server->nfs_client; | |
4206 | ||
4207 | spin_lock(&clp->cl_lock); | |
4208 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4209 | clp->cl_last_renewal = now; | |
4210 | spin_unlock(&clp->cl_lock); | |
4211 | break; | |
4212 | } | |
4213 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4214 | } while (exception.retry); |
4215 | return err; | |
4216 | } | |
4217 | ||
4218 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4219 | { | |
e38eb650 BS |
4220 | int error; |
4221 | ||
0e574af1 | 4222 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4223 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4224 | if (error == 0) { |
4225 | /* block layout checks this! */ | |
4226 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4227 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4228 | } |
e38eb650 BS |
4229 | |
4230 | return error; | |
1da177e4 LT |
4231 | } |
4232 | ||
4233 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4234 | struct nfs_pathconf *pathconf) | |
4235 | { | |
4236 | struct nfs4_pathconf_arg args = { | |
4237 | .fh = fhandle, | |
4238 | .bitmask = server->attr_bitmask, | |
4239 | }; | |
d45b2989 BH |
4240 | struct nfs4_pathconf_res res = { |
4241 | .pathconf = pathconf, | |
4242 | }; | |
1da177e4 LT |
4243 | struct rpc_message msg = { |
4244 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4245 | .rpc_argp = &args, | |
d45b2989 | 4246 | .rpc_resp = &res, |
1da177e4 LT |
4247 | }; |
4248 | ||
4249 | /* None of the pathconf attributes are mandatory to implement */ | |
4250 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4251 | memset(pathconf, 0, sizeof(*pathconf)); | |
4252 | return 0; | |
4253 | } | |
4254 | ||
0e574af1 | 4255 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4256 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4257 | } |
4258 | ||
4259 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4260 | struct nfs_pathconf *pathconf) | |
4261 | { | |
4262 | struct nfs4_exception exception = { }; | |
4263 | int err; | |
4264 | ||
4265 | do { | |
4266 | err = nfs4_handle_exception(server, | |
4267 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4268 | &exception); | |
4269 | } while (exception.retry); | |
4270 | return err; | |
4271 | } | |
4272 | ||
5521abfd | 4273 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4274 | const struct nfs_open_context *ctx, |
4275 | const struct nfs_lock_context *l_ctx, | |
4276 | fmode_t fmode) | |
4277 | { | |
4278 | const struct nfs_lockowner *lockowner = NULL; | |
4279 | ||
4280 | if (l_ctx != NULL) | |
4281 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4282 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4283 | } |
4284 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4285 | ||
5521abfd TM |
4286 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4287 | const struct nfs_open_context *ctx, | |
4288 | const struct nfs_lock_context *l_ctx, | |
4289 | fmode_t fmode) | |
4290 | { | |
4291 | nfs4_stateid current_stateid; | |
4292 | ||
e1253be0 TM |
4293 | /* If the current stateid represents a lost lock, then exit */ |
4294 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4295 | return true; | |
5521abfd TM |
4296 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4297 | } | |
4298 | ||
4299 | static bool nfs4_error_stateid_expired(int err) | |
4300 | { | |
4301 | switch (err) { | |
4302 | case -NFS4ERR_DELEG_REVOKED: | |
4303 | case -NFS4ERR_ADMIN_REVOKED: | |
4304 | case -NFS4ERR_BAD_STATEID: | |
4305 | case -NFS4ERR_STALE_STATEID: | |
4306 | case -NFS4ERR_OLD_STATEID: | |
4307 | case -NFS4ERR_OPENMODE: | |
4308 | case -NFS4ERR_EXPIRED: | |
4309 | return true; | |
4310 | } | |
4311 | return false; | |
4312 | } | |
4313 | ||
d45f60c6 | 4314 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4315 | { |
d45f60c6 | 4316 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4317 | } |
4318 | ||
d45f60c6 | 4319 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4320 | { |
d45f60c6 | 4321 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4322 | |
d45f60c6 WAA |
4323 | trace_nfs4_read(hdr, task->tk_status); |
4324 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4325 | hdr->args.context->state, |
4326 | NULL) == -EAGAIN) { | |
d00c5d43 | 4327 | rpc_restart_call_prepare(task); |
ec06c096 | 4328 | return -EAGAIN; |
1da177e4 | 4329 | } |
8850df99 | 4330 | |
d45f60c6 | 4331 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4332 | if (task->tk_status > 0) |
d45f60c6 | 4333 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4334 | return 0; |
1da177e4 LT |
4335 | } |
4336 | ||
5521abfd | 4337 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4338 | struct nfs_pgio_args *args) |
5521abfd TM |
4339 | { |
4340 | ||
4341 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4342 | nfs4_stateid_is_current(&args->stateid, | |
4343 | args->context, | |
4344 | args->lock_context, | |
4345 | FMODE_READ)) | |
4346 | return false; | |
4347 | rpc_restart_call_prepare(task); | |
4348 | return true; | |
4349 | } | |
4350 | ||
d45f60c6 | 4351 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4352 | { |
4353 | ||
4354 | dprintk("--> %s\n", __func__); | |
4355 | ||
d45f60c6 | 4356 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4357 | return -EAGAIN; |
d45f60c6 | 4358 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4359 | return -EAGAIN; |
d45f60c6 WAA |
4360 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4361 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4362 | } |
4363 | ||
d45f60c6 WAA |
4364 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4365 | struct rpc_message *msg) | |
1da177e4 | 4366 | { |
d45f60c6 WAA |
4367 | hdr->timestamp = jiffies; |
4368 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4369 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4370 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4371 | } |
4372 | ||
d45f60c6 WAA |
4373 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4374 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4375 | { |
d45f60c6 WAA |
4376 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4377 | &hdr->args.seq_args, | |
4378 | &hdr->res.seq_res, | |
9b206149 | 4379 | task)) |
ef1820f9 | 4380 | return 0; |
d45f60c6 WAA |
4381 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4382 | hdr->args.lock_context, | |
4383 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4384 | return -EIO; |
d45f60c6 | 4385 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4386 | return -EIO; |
4387 | return 0; | |
1da177e4 LT |
4388 | } |
4389 | ||
d45f60c6 WAA |
4390 | static int nfs4_write_done_cb(struct rpc_task *task, |
4391 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4392 | { |
d45f60c6 | 4393 | struct inode *inode = hdr->inode; |
8478eaa1 | 4394 | |
d45f60c6 WAA |
4395 | trace_nfs4_write(hdr, task->tk_status); |
4396 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4397 | hdr->args.context->state, |
4398 | NULL) == -EAGAIN) { | |
d00c5d43 | 4399 | rpc_restart_call_prepare(task); |
788e7a89 | 4400 | return -EAGAIN; |
1da177e4 | 4401 | } |
4f9838c7 | 4402 | if (task->tk_status >= 0) { |
d45f60c6 | 4403 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4404 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4405 | } |
788e7a89 | 4406 | return 0; |
1da177e4 LT |
4407 | } |
4408 | ||
5521abfd | 4409 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4410 | struct nfs_pgio_args *args) |
5521abfd TM |
4411 | { |
4412 | ||
4413 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4414 | nfs4_stateid_is_current(&args->stateid, | |
4415 | args->context, | |
4416 | args->lock_context, | |
4417 | FMODE_WRITE)) | |
4418 | return false; | |
4419 | rpc_restart_call_prepare(task); | |
4420 | return true; | |
4421 | } | |
4422 | ||
d45f60c6 | 4423 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4424 | { |
d45f60c6 | 4425 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4426 | return -EAGAIN; |
d45f60c6 | 4427 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4428 | return -EAGAIN; |
d45f60c6 WAA |
4429 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4430 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4431 | } |
4432 | ||
5a37f851 | 4433 | static |
d45f60c6 | 4434 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4435 | { |
5a37f851 | 4436 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4437 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4438 | return false; |
4439 | /* Otherwise, request attributes if and only if we don't hold | |
4440 | * a delegation | |
4441 | */ | |
011e2a7f | 4442 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4443 | } |
a69aef14 | 4444 | |
d45f60c6 WAA |
4445 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4446 | struct rpc_message *msg) | |
1da177e4 | 4447 | { |
d45f60c6 | 4448 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4449 | |
d45f60c6 WAA |
4450 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4451 | hdr->args.bitmask = NULL; | |
4452 | hdr->res.fattr = NULL; | |
7ffd1064 | 4453 | } else |
d45f60c6 | 4454 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4455 | |
d45f60c6 WAA |
4456 | if (!hdr->pgio_done_cb) |
4457 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4458 | hdr->res.server = server; | |
4459 | hdr->timestamp = jiffies; | |
1da177e4 | 4460 | |
bdc7f021 | 4461 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4462 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4463 | } |
4464 | ||
0b7c0153 | 4465 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4466 | { |
d9afbd1b TM |
4467 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4468 | &data->args.seq_args, | |
4469 | &data->res.seq_res, | |
4470 | task); | |
1da177e4 LT |
4471 | } |
4472 | ||
0b7c0153 | 4473 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4474 | { |
1da177e4 | 4475 | struct inode *inode = data->inode; |
14516c3a | 4476 | |
cc668ab3 | 4477 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4478 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4479 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4480 | rpc_restart_call_prepare(task); |
788e7a89 | 4481 | return -EAGAIN; |
1da177e4 | 4482 | } |
788e7a89 | 4483 | return 0; |
1da177e4 LT |
4484 | } |
4485 | ||
0b7c0153 | 4486 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4487 | { |
4488 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4489 | return -EAGAIN; | |
0b7c0153 | 4490 | return data->commit_done_cb(task, data); |
5f452431 FI |
4491 | } |
4492 | ||
0b7c0153 | 4493 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4494 | { |
788e7a89 | 4495 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4496 | |
0b7c0153 FI |
4497 | if (data->commit_done_cb == NULL) |
4498 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4499 | data->res.server = server; |
bdc7f021 | 4500 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4501 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4502 | } |
4503 | ||
9bc4e3ca CL |
4504 | struct nfs4_renewdata { |
4505 | struct nfs_client *client; | |
4506 | unsigned long timestamp; | |
4507 | }; | |
4508 | ||
1da177e4 LT |
4509 | /* |
4510 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4511 | * standalone procedure for queueing an asynchronous RENEW. | |
4512 | */ | |
9bc4e3ca | 4513 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4514 | { |
9bc4e3ca CL |
4515 | struct nfs4_renewdata *data = calldata; |
4516 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4517 | |
0851de06 AB |
4518 | if (atomic_read(&clp->cl_count) > 1) |
4519 | nfs4_schedule_state_renewal(clp); | |
4520 | nfs_put_client(clp); | |
9bc4e3ca | 4521 | kfree(data); |
dc96aef9 AB |
4522 | } |
4523 | ||
9bc4e3ca | 4524 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4525 | { |
9bc4e3ca CL |
4526 | struct nfs4_renewdata *data = calldata; |
4527 | struct nfs_client *clp = data->client; | |
4528 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4529 | |
c6d01c6f | 4530 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4531 | switch (task->tk_status) { |
4532 | case 0: | |
4533 | break; | |
4534 | case -NFS4ERR_LEASE_MOVED: | |
4535 | nfs4_schedule_lease_moved_recovery(clp); | |
4536 | break; | |
4537 | default: | |
95baa25c | 4538 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4539 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4540 | return; | |
4541 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4542 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4543 | return; |
4544 | } | |
4545 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4546 | } |
452e9352 | 4547 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4548 | } |
4549 | ||
963d8fe5 TM |
4550 | static const struct rpc_call_ops nfs4_renew_ops = { |
4551 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4552 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4553 | }; |
4554 | ||
2f60ea6b | 4555 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4556 | { |
4557 | struct rpc_message msg = { | |
4558 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4559 | .rpc_argp = clp, | |
b4454fe1 | 4560 | .rpc_cred = cred, |
1da177e4 | 4561 | }; |
9bc4e3ca | 4562 | struct nfs4_renewdata *data; |
1da177e4 | 4563 | |
2f60ea6b TM |
4564 | if (renew_flags == 0) |
4565 | return 0; | |
0851de06 AB |
4566 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4567 | return -EIO; | |
b569ad34 | 4568 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4569 | if (data == NULL) |
4570 | return -ENOMEM; | |
4571 | data->client = clp; | |
4572 | data->timestamp = jiffies; | |
bc7a05ca | 4573 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4574 | &nfs4_renew_ops, data); |
1da177e4 LT |
4575 | } |
4576 | ||
8534d4ec | 4577 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4578 | { |
4579 | struct rpc_message msg = { | |
4580 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4581 | .rpc_argp = clp, | |
b4454fe1 | 4582 | .rpc_cred = cred, |
1da177e4 LT |
4583 | }; |
4584 | unsigned long now = jiffies; | |
4585 | int status; | |
4586 | ||
bc7a05ca | 4587 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4588 | if (status < 0) |
4589 | return status; | |
452e9352 | 4590 | do_renew_lease(clp, now); |
1da177e4 LT |
4591 | return 0; |
4592 | } | |
4593 | ||
aa1870af BF |
4594 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4595 | { | |
7dd7d959 | 4596 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4597 | } |
4598 | ||
21f498c2 TM |
4599 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4600 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4601 | * the stack. |
4602 | */ | |
21f498c2 | 4603 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4604 | |
e9e3d724 | 4605 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 4606 | struct page **pages) |
e9e3d724 NH |
4607 | { |
4608 | struct page *newpage, **spages; | |
4609 | int rc = 0; | |
4610 | size_t len; | |
4611 | spages = pages; | |
4612 | ||
4613 | do { | |
21f498c2 | 4614 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4615 | newpage = alloc_page(GFP_KERNEL); |
4616 | ||
4617 | if (newpage == NULL) | |
4618 | goto unwind; | |
4619 | memcpy(page_address(newpage), buf, len); | |
4620 | buf += len; | |
4621 | buflen -= len; | |
4622 | *pages++ = newpage; | |
4623 | rc++; | |
4624 | } while (buflen != 0); | |
4625 | ||
4626 | return rc; | |
4627 | ||
4628 | unwind: | |
4629 | for(; rc > 0; rc--) | |
4630 | __free_page(spages[rc-1]); | |
4631 | return -ENOMEM; | |
4632 | } | |
4633 | ||
e50a1c2e BF |
4634 | struct nfs4_cached_acl { |
4635 | int cached; | |
4636 | size_t len; | |
3e9d4154 | 4637 | char data[0]; |
e50a1c2e BF |
4638 | }; |
4639 | ||
4640 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4641 | { | |
4642 | struct nfs_inode *nfsi = NFS_I(inode); | |
4643 | ||
4644 | spin_lock(&inode->i_lock); | |
4645 | kfree(nfsi->nfs4_acl); | |
4646 | nfsi->nfs4_acl = acl; | |
4647 | spin_unlock(&inode->i_lock); | |
4648 | } | |
4649 | ||
4650 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4651 | { | |
4652 | nfs4_set_cached_acl(inode, NULL); | |
4653 | } | |
4654 | ||
4655 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4656 | { | |
4657 | struct nfs_inode *nfsi = NFS_I(inode); | |
4658 | struct nfs4_cached_acl *acl; | |
4659 | int ret = -ENOENT; | |
4660 | ||
4661 | spin_lock(&inode->i_lock); | |
4662 | acl = nfsi->nfs4_acl; | |
4663 | if (acl == NULL) | |
4664 | goto out; | |
4665 | if (buf == NULL) /* user is just asking for length */ | |
4666 | goto out_len; | |
4667 | if (acl->cached == 0) | |
4668 | goto out; | |
4669 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4670 | if (acl->len > buflen) | |
4671 | goto out; | |
4672 | memcpy(buf, acl->data, acl->len); | |
4673 | out_len: | |
4674 | ret = acl->len; | |
4675 | out: | |
4676 | spin_unlock(&inode->i_lock); | |
4677 | return ret; | |
4678 | } | |
4679 | ||
5794d21e | 4680 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4681 | { |
4682 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4683 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4684 | |
1f1ea6c2 | 4685 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4686 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4687 | if (acl == NULL) |
4688 | goto out; | |
4689 | acl->cached = 1; | |
5794d21e | 4690 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4691 | } else { |
4692 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4693 | if (acl == NULL) | |
4694 | goto out; | |
4695 | acl->cached = 0; | |
4696 | } | |
4697 | acl->len = acl_len; | |
4698 | out: | |
4699 | nfs4_set_cached_acl(inode, acl); | |
4700 | } | |
4701 | ||
bf118a34 AA |
4702 | /* |
4703 | * The getxattr API returns the required buffer length when called with a | |
4704 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4705 | * the required buf. On a NULL buf, we send a page of data to the server | |
4706 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4707 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4708 | * the cache. If not so, we throw away the page, and cache the required | |
4709 | * length. The next getxattr call will then produce another round trip to | |
4710 | * the server, this time with the input buf of the required size. | |
4711 | */ | |
16b4289c | 4712 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4713 | { |
bf118a34 | 4714 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4715 | struct nfs_getaclargs args = { |
4716 | .fh = NFS_FH(inode), | |
4717 | .acl_pages = pages, | |
4718 | .acl_len = buflen, | |
4719 | }; | |
663c79b3 BH |
4720 | struct nfs_getaclres res = { |
4721 | .acl_len = buflen, | |
4722 | }; | |
aa1870af BF |
4723 | struct rpc_message msg = { |
4724 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4725 | .rpc_argp = &args, | |
663c79b3 | 4726 | .rpc_resp = &res, |
aa1870af | 4727 | }; |
21f498c2 TM |
4728 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4729 | int ret = -ENOMEM, i; | |
aa1870af | 4730 | |
bf118a34 AA |
4731 | /* As long as we're doing a round trip to the server anyway, |
4732 | * let's be prepared for a page of acl data. */ | |
4733 | if (npages == 0) | |
4734 | npages = 1; | |
21f498c2 TM |
4735 | if (npages > ARRAY_SIZE(pages)) |
4736 | return -ERANGE; | |
5a006899 | 4737 | |
bf118a34 AA |
4738 | for (i = 0; i < npages; i++) { |
4739 | pages[i] = alloc_page(GFP_KERNEL); | |
4740 | if (!pages[i]) | |
4741 | goto out_free; | |
e50a1c2e | 4742 | } |
5a006899 SP |
4743 | |
4744 | /* for decoding across pages */ | |
4745 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4746 | if (!res.acl_scratch) | |
4747 | goto out_free; | |
4748 | ||
bf118a34 | 4749 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 4750 | |
de040bec | 4751 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4752 | __func__, buf, buflen, npages, args.acl_len); |
4753 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4754 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4755 | if (ret) |
4756 | goto out_free; | |
bf118a34 | 4757 | |
1f1ea6c2 TM |
4758 | /* Handle the case where the passed-in buffer is too short */ |
4759 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4760 | /* Did the user only issue a request for the acl length? */ | |
4761 | if (buf == NULL) | |
4762 | goto out_ok; | |
e50a1c2e | 4763 | ret = -ERANGE; |
1f1ea6c2 | 4764 | goto out_free; |
e50a1c2e | 4765 | } |
1f1ea6c2 | 4766 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4767 | if (buf) { |
4768 | if (res.acl_len > buflen) { | |
4769 | ret = -ERANGE; | |
4770 | goto out_free; | |
4771 | } | |
1f1ea6c2 | 4772 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4773 | } |
1f1ea6c2 TM |
4774 | out_ok: |
4775 | ret = res.acl_len; | |
e50a1c2e | 4776 | out_free: |
bf118a34 AA |
4777 | for (i = 0; i < npages; i++) |
4778 | if (pages[i]) | |
4779 | __free_page(pages[i]); | |
331818f1 TM |
4780 | if (res.acl_scratch) |
4781 | __free_page(res.acl_scratch); | |
aa1870af BF |
4782 | return ret; |
4783 | } | |
4784 | ||
16b4289c TM |
4785 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4786 | { | |
4787 | struct nfs4_exception exception = { }; | |
4788 | ssize_t ret; | |
4789 | do { | |
4790 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4791 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4792 | if (ret >= 0) |
4793 | break; | |
4794 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4795 | } while (exception.retry); | |
4796 | return ret; | |
4797 | } | |
4798 | ||
e50a1c2e BF |
4799 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4800 | { | |
4801 | struct nfs_server *server = NFS_SERVER(inode); | |
4802 | int ret; | |
4803 | ||
4804 | if (!nfs4_server_supports_acls(server)) | |
4805 | return -EOPNOTSUPP; | |
4806 | ret = nfs_revalidate_inode(server, inode); | |
4807 | if (ret < 0) | |
4808 | return ret; | |
08a22b39 AK |
4809 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4810 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4811 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4812 | if (ret != -ENOENT) | |
bf118a34 AA |
4813 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4814 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4815 | return ret; |
4816 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4817 | } | |
4818 | ||
16b4289c | 4819 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4820 | { |
4821 | struct nfs_server *server = NFS_SERVER(inode); | |
4822 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4823 | struct nfs_setaclargs arg = { | |
4824 | .fh = NFS_FH(inode), | |
4825 | .acl_pages = pages, | |
4826 | .acl_len = buflen, | |
4827 | }; | |
73c403a9 | 4828 | struct nfs_setaclres res; |
4b580ee3 BF |
4829 | struct rpc_message msg = { |
4830 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4831 | .rpc_argp = &arg, | |
73c403a9 | 4832 | .rpc_resp = &res, |
4b580ee3 | 4833 | }; |
21f498c2 | 4834 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4835 | int ret, i; |
4b580ee3 BF |
4836 | |
4837 | if (!nfs4_server_supports_acls(server)) | |
4838 | return -EOPNOTSUPP; | |
21f498c2 TM |
4839 | if (npages > ARRAY_SIZE(pages)) |
4840 | return -ERANGE; | |
8fbcf237 | 4841 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
4842 | if (i < 0) |
4843 | return i; | |
57ec14c5 | 4844 | nfs4_inode_return_delegation(inode); |
7c513058 | 4845 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4846 | |
4847 | /* | |
4848 | * Free each page after tx, so the only ref left is | |
4849 | * held by the network stack | |
4850 | */ | |
4851 | for (; i > 0; i--) | |
4852 | put_page(pages[i-1]); | |
4853 | ||
08a22b39 AK |
4854 | /* |
4855 | * Acl update can result in inode attribute update. | |
4856 | * so mark the attribute cache invalid. | |
4857 | */ | |
4858 | spin_lock(&inode->i_lock); | |
4859 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4860 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4861 | nfs_access_zap_cache(inode); |
4862 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4863 | return ret; |
4864 | } | |
4865 | ||
16b4289c TM |
4866 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4867 | { | |
4868 | struct nfs4_exception exception = { }; | |
4869 | int err; | |
4870 | do { | |
c1578b76 TM |
4871 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4872 | trace_nfs4_set_acl(inode, err); | |
4873 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4874 | &exception); |
4875 | } while (exception.retry); | |
4876 | return err; | |
4877 | } | |
4878 | ||
aa9c2669 DQ |
4879 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4880 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4881 | size_t buflen) | |
4882 | { | |
4883 | struct nfs_server *server = NFS_SERVER(inode); | |
4884 | struct nfs_fattr fattr; | |
4885 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4886 | ||
4887 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4888 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4889 | .fh = NFS_FH(inode), |
4890 | .bitmask = bitmask, | |
4891 | }; | |
4892 | struct nfs4_getattr_res res = { | |
4893 | .fattr = &fattr, | |
4894 | .label = &label, | |
4895 | .server = server, | |
4896 | }; | |
4897 | struct rpc_message msg = { | |
4898 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4899 | .rpc_argp = &arg, |
aa9c2669 DQ |
4900 | .rpc_resp = &res, |
4901 | }; | |
4902 | int ret; | |
4903 | ||
4904 | nfs_fattr_init(&fattr); | |
4905 | ||
fcb63a9b | 4906 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4907 | if (ret) |
4908 | return ret; | |
4909 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4910 | return -ENOENT; | |
4911 | if (buflen < label.len) | |
4912 | return -ERANGE; | |
4913 | return 0; | |
4914 | } | |
4915 | ||
4916 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4917 | size_t buflen) | |
4918 | { | |
4919 | struct nfs4_exception exception = { }; | |
4920 | int err; | |
4921 | ||
4922 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4923 | return -EOPNOTSUPP; | |
4924 | ||
4925 | do { | |
c1578b76 TM |
4926 | err = _nfs4_get_security_label(inode, buf, buflen); |
4927 | trace_nfs4_get_security_label(inode, err); | |
4928 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4929 | &exception); |
4930 | } while (exception.retry); | |
4931 | return err; | |
4932 | } | |
4933 | ||
4934 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4935 | struct nfs4_label *ilabel, | |
4936 | struct nfs_fattr *fattr, | |
4937 | struct nfs4_label *olabel) | |
4938 | { | |
4939 | ||
4940 | struct iattr sattr = {0}; | |
4941 | struct nfs_server *server = NFS_SERVER(inode); | |
4942 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4943 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4944 | .fh = NFS_FH(inode), |
4945 | .iap = &sattr, | |
4946 | .server = server, | |
4947 | .bitmask = bitmask, | |
4948 | .label = ilabel, | |
4949 | }; | |
4950 | struct nfs_setattrres res = { | |
4951 | .fattr = fattr, | |
4952 | .label = olabel, | |
4953 | .server = server, | |
4954 | }; | |
4955 | struct rpc_message msg = { | |
4956 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4957 | .rpc_argp = &arg, |
aa9c2669 DQ |
4958 | .rpc_resp = &res, |
4959 | }; | |
4960 | int status; | |
4961 | ||
12207f69 | 4962 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4963 | |
12207f69 | 4964 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4965 | if (status) |
4966 | dprintk("%s failed: %d\n", __func__, status); | |
4967 | ||
4968 | return status; | |
4969 | } | |
4970 | ||
4971 | static int nfs4_do_set_security_label(struct inode *inode, | |
4972 | struct nfs4_label *ilabel, | |
4973 | struct nfs_fattr *fattr, | |
4974 | struct nfs4_label *olabel) | |
4975 | { | |
4976 | struct nfs4_exception exception = { }; | |
4977 | int err; | |
4978 | ||
4979 | do { | |
c1578b76 TM |
4980 | err = _nfs4_do_set_security_label(inode, ilabel, |
4981 | fattr, olabel); | |
4982 | trace_nfs4_set_security_label(inode, err); | |
4983 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4984 | &exception); |
4985 | } while (exception.retry); | |
4986 | return err; | |
4987 | } | |
4988 | ||
4989 | static int | |
4990 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4991 | { | |
4992 | struct nfs4_label ilabel, *olabel = NULL; | |
4993 | struct nfs_fattr fattr; | |
4994 | struct rpc_cred *cred; | |
2b0143b5 | 4995 | struct inode *inode = d_inode(dentry); |
aa9c2669 DQ |
4996 | int status; |
4997 | ||
4998 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4999 | return -EOPNOTSUPP; | |
5000 | ||
5001 | nfs_fattr_init(&fattr); | |
5002 | ||
5003 | ilabel.pi = 0; | |
5004 | ilabel.lfs = 0; | |
5005 | ilabel.label = (char *)buf; | |
5006 | ilabel.len = buflen; | |
5007 | ||
5008 | cred = rpc_lookup_cred(); | |
5009 | if (IS_ERR(cred)) | |
5010 | return PTR_ERR(cred); | |
5011 | ||
5012 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
5013 | if (IS_ERR(olabel)) { | |
5014 | status = -PTR_ERR(olabel); | |
5015 | goto out; | |
5016 | } | |
5017 | ||
5018 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
5019 | if (status == 0) | |
5020 | nfs_setsecurity(inode, &fattr, olabel); | |
5021 | ||
5022 | nfs4_label_free(olabel); | |
5023 | out: | |
5024 | put_rpccred(cred); | |
5025 | return status; | |
5026 | } | |
5027 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
5028 | ||
5029 | ||
f092075d CL |
5030 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
5031 | nfs4_verifier *bootverf) | |
cd93710e CL |
5032 | { |
5033 | __be32 verf[2]; | |
5034 | ||
2c820d9a CL |
5035 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
5036 | /* An impossible timestamp guarantees this value | |
5037 | * will never match a generated boot time. */ | |
5038 | verf[0] = 0; | |
17f26b12 | 5039 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5040 | } else { |
f092075d | 5041 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5042 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5043 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5044 | } |
cd93710e CL |
5045 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5046 | } | |
5047 | ||
a3192688 JL |
5048 | static int |
5049 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5050 | { |
a3192688 JL |
5051 | int result; |
5052 | size_t len; | |
5053 | char *str; | |
e984a55a | 5054 | |
ceb3a16c | 5055 | if (clp->cl_owner_id != NULL) |
a3192688 | 5056 | return 0; |
4a3e5779 | 5057 | |
a3192688 | 5058 | rcu_read_lock(); |
4a70316c | 5059 | len = 14 + strlen(clp->cl_ipaddr) + 1 + |
a3192688 JL |
5060 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
5061 | 1 + | |
5062 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5063 | 1; | |
5064 | rcu_read_unlock(); | |
5065 | ||
5066 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5067 | return -EINVAL; | |
5068 | ||
5069 | /* | |
5070 | * Since this string is allocated at mount time, and held until the | |
5071 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5072 | * about a memory-reclaim deadlock. | |
5073 | */ | |
5074 | str = kmalloc(len, GFP_KERNEL); | |
5075 | if (!str) | |
5076 | return -ENOMEM; | |
ceb3a16c | 5077 | |
e984a55a | 5078 | rcu_read_lock(); |
a3192688 JL |
5079 | result = scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
5080 | clp->cl_ipaddr, | |
5081 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5082 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5083 | rcu_read_unlock(); |
a3192688 | 5084 | |
a3192688 JL |
5085 | clp->cl_owner_id = str; |
5086 | return 0; | |
e984a55a CL |
5087 | } |
5088 | ||
873e3851 JL |
5089 | static int |
5090 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5091 | { | |
5092 | int result; | |
5093 | size_t len; | |
5094 | char *str; | |
5095 | ||
5096 | len = 10 + 10 + 1 + 10 + 1 + | |
5097 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5098 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5099 | ||
5100 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5101 | return -EINVAL; | |
5102 | ||
5103 | /* | |
5104 | * Since this string is allocated at mount time, and held until the | |
5105 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5106 | * about a memory-reclaim deadlock. | |
5107 | */ | |
5108 | str = kmalloc(len, GFP_KERNEL); | |
5109 | if (!str) | |
5110 | return -ENOMEM; | |
5111 | ||
5112 | result = scnprintf(str, len, "Linux NFSv%u.%u %s/%s", | |
5113 | clp->rpc_ops->version, clp->cl_minorversion, | |
5114 | nfs4_client_id_uniquifier, | |
5115 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5116 | clp->cl_owner_id = str; |
5117 | return 0; | |
5118 | } | |
5119 | ||
5120 | static int | |
5121 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5122 | { |
873e3851 JL |
5123 | int result; |
5124 | size_t len; | |
5125 | char *str; | |
ceb3a16c TM |
5126 | |
5127 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5128 | return 0; |
6f2ea7f2 CL |
5129 | |
5130 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5131 | return nfs4_init_uniquifier_client_string(clp); |
5132 | ||
5133 | len = 10 + 10 + 1 + 10 + 1 + | |
5134 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5135 | ||
5136 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5137 | return -EINVAL; | |
5138 | ||
5139 | /* | |
5140 | * Since this string is allocated at mount time, and held until the | |
5141 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5142 | * about a memory-reclaim deadlock. | |
5143 | */ | |
5144 | str = kmalloc(len, GFP_KERNEL); | |
5145 | if (!str) | |
5146 | return -ENOMEM; | |
5147 | ||
5148 | result = scnprintf(str, len, "Linux NFSv%u.%u %s", | |
5149 | clp->rpc_ops->version, clp->cl_minorversion, | |
5150 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5151 | clp->cl_owner_id = str; |
5152 | return 0; | |
e984a55a CL |
5153 | } |
5154 | ||
706cb8db CL |
5155 | /* |
5156 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5157 | * services. Advertise one based on the address family of the | |
5158 | * clientaddr. | |
5159 | */ | |
5160 | static unsigned int | |
5161 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5162 | { | |
5163 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5164 | return scnprintf(buf, len, "tcp6"); | |
5165 | else | |
5166 | return scnprintf(buf, len, "tcp"); | |
5167 | } | |
5168 | ||
f11b2a1c JL |
5169 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5170 | { | |
5171 | struct nfs4_setclientid *sc = calldata; | |
5172 | ||
5173 | if (task->tk_status == 0) | |
5174 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5175 | } | |
5176 | ||
5177 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5178 | .rpc_call_done = nfs4_setclientid_done, | |
5179 | }; | |
5180 | ||
6bbb4ae8 CL |
5181 | /** |
5182 | * nfs4_proc_setclientid - Negotiate client ID | |
5183 | * @clp: state data structure | |
5184 | * @program: RPC program for NFSv4 callback service | |
5185 | * @port: IP port number for NFS4 callback service | |
5186 | * @cred: RPC credential to use for this call | |
5187 | * @res: where to place the result | |
5188 | * | |
5189 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5190 | */ | |
bb8b27e5 TM |
5191 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5192 | unsigned short port, struct rpc_cred *cred, | |
5193 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5194 | { |
5195 | nfs4_verifier sc_verifier; | |
5196 | struct nfs4_setclientid setclientid = { | |
5197 | .sc_verifier = &sc_verifier, | |
5198 | .sc_prog = program, | |
3a6bb738 | 5199 | .sc_clnt = clp, |
1da177e4 LT |
5200 | }; |
5201 | struct rpc_message msg = { | |
5202 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5203 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5204 | .rpc_resp = res, |
286d7d6a | 5205 | .rpc_cred = cred, |
1da177e4 | 5206 | }; |
f11b2a1c JL |
5207 | struct rpc_task *task; |
5208 | struct rpc_task_setup task_setup_data = { | |
5209 | .rpc_client = clp->cl_rpcclient, | |
5210 | .rpc_message = &msg, | |
5211 | .callback_ops = &nfs4_setclientid_ops, | |
5212 | .callback_data = &setclientid, | |
5213 | .flags = RPC_TASK_TIMEOUT, | |
5214 | }; | |
6bbb4ae8 | 5215 | int status; |
1da177e4 | 5216 | |
de734831 | 5217 | /* nfs_client_id4 */ |
f092075d | 5218 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5219 | |
5220 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5221 | status = nfs4_init_uniform_client_string(clp); | |
5222 | else | |
a3192688 | 5223 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5224 | |
5225 | if (status) | |
5226 | goto out; | |
3a6bb738 | 5227 | |
de734831 | 5228 | /* cb_client4 */ |
706cb8db CL |
5229 | setclientid.sc_netid_len = |
5230 | nfs4_init_callback_netid(clp, | |
5231 | setclientid.sc_netid, | |
5232 | sizeof(setclientid.sc_netid)); | |
de734831 | 5233 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5234 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5235 | clp->cl_ipaddr, port >> 8, port & 255); |
5236 | ||
3a6bb738 | 5237 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5238 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5239 | clp->cl_owner_id); |
f11b2a1c JL |
5240 | task = rpc_run_task(&task_setup_data); |
5241 | if (IS_ERR(task)) { | |
5242 | status = PTR_ERR(task); | |
5243 | goto out; | |
5244 | } | |
5245 | status = task->tk_status; | |
5246 | if (setclientid.sc_cred) { | |
5247 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5248 | put_rpccred(setclientid.sc_cred); | |
5249 | } | |
5250 | rpc_put_task(task); | |
5251 | out: | |
c6d01c6f | 5252 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5253 | dprintk("NFS reply setclientid: %d\n", status); |
5254 | return status; | |
1da177e4 LT |
5255 | } |
5256 | ||
6bbb4ae8 CL |
5257 | /** |
5258 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5259 | * @clp: state data structure | |
5260 | * @res: result of a previous SETCLIENTID | |
5261 | * @cred: RPC credential to use for this call | |
5262 | * | |
5263 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5264 | */ | |
fd954ae1 | 5265 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5266 | struct nfs4_setclientid_res *arg, |
5267 | struct rpc_cred *cred) | |
1da177e4 | 5268 | { |
1da177e4 LT |
5269 | struct rpc_message msg = { |
5270 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5271 | .rpc_argp = arg, |
286d7d6a | 5272 | .rpc_cred = cred, |
1da177e4 | 5273 | }; |
1da177e4 LT |
5274 | int status; |
5275 | ||
6bbb4ae8 CL |
5276 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5277 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5278 | clp->cl_clientid); | |
1bd714f2 | 5279 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5280 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5281 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5282 | return status; |
5283 | } | |
5284 | ||
fe650407 TM |
5285 | struct nfs4_delegreturndata { |
5286 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5287 | struct nfs4_delegreturnres res; |
fe650407 TM |
5288 | struct nfs_fh fh; |
5289 | nfs4_stateid stateid; | |
26e976a8 | 5290 | unsigned long timestamp; |
fa178f29 | 5291 | struct nfs_fattr fattr; |
fe650407 | 5292 | int rpc_status; |
039b756a PT |
5293 | struct inode *inode; |
5294 | bool roc; | |
5295 | u32 roc_barrier; | |
fe650407 TM |
5296 | }; |
5297 | ||
fe650407 TM |
5298 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5299 | { | |
5300 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5301 | |
14516c3a TM |
5302 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5303 | return; | |
938e1010 | 5304 | |
ca8acf8d | 5305 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5306 | switch (task->tk_status) { |
79708861 | 5307 | case 0: |
fa178f29 | 5308 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5309 | case -NFS4ERR_ADMIN_REVOKED: |
5310 | case -NFS4ERR_DELEG_REVOKED: | |
5311 | case -NFS4ERR_BAD_STATEID: | |
5312 | case -NFS4ERR_OLD_STATEID: | |
5313 | case -NFS4ERR_STALE_STATEID: | |
5314 | case -NFS4ERR_EXPIRED: | |
5315 | task->tk_status = 0; | |
039b756a PT |
5316 | if (data->roc) |
5317 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5318 | break; |
79708861 | 5319 | default: |
8478eaa1 N |
5320 | if (nfs4_async_handle_error(task, data->res.server, |
5321 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5322 | rpc_restart_call_prepare(task); |
79708861 RL |
5323 | return; |
5324 | } | |
5325 | } | |
5326 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5327 | } |
5328 | ||
5329 | static void nfs4_delegreturn_release(void *calldata) | |
5330 | { | |
039b756a | 5331 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5332 | struct inode *inode = data->inode; |
039b756a | 5333 | |
ea7c38fe TM |
5334 | if (inode) { |
5335 | if (data->roc) | |
5336 | pnfs_roc_release(inode); | |
5337 | nfs_iput_and_deactive(inode); | |
5338 | } | |
fe650407 TM |
5339 | kfree(calldata); |
5340 | } | |
5341 | ||
938e1010 AA |
5342 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5343 | { | |
5344 | struct nfs4_delegreturndata *d_data; | |
5345 | ||
5346 | d_data = (struct nfs4_delegreturndata *)data; | |
5347 | ||
500d701f PT |
5348 | if (nfs4_wait_on_layoutreturn(d_data->inode, task)) |
5349 | return; | |
5350 | ||
4ff376fe TM |
5351 | if (d_data->roc) |
5352 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5353 | |
d9afbd1b TM |
5354 | nfs4_setup_sequence(d_data->res.server, |
5355 | &d_data->args.seq_args, | |
5356 | &d_data->res.seq_res, | |
5357 | task); | |
938e1010 | 5358 | } |
938e1010 | 5359 | |
c8d149f3 | 5360 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5361 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5362 | .rpc_call_done = nfs4_delegreturn_done, |
5363 | .rpc_release = nfs4_delegreturn_release, | |
5364 | }; | |
5365 | ||
e6f81075 | 5366 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5367 | { |
5368 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5369 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5370 | struct rpc_task *task; |
5138fde0 TM |
5371 | struct rpc_message msg = { |
5372 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5373 | .rpc_cred = cred, | |
5374 | }; | |
c970aa85 TM |
5375 | struct rpc_task_setup task_setup_data = { |
5376 | .rpc_client = server->client, | |
5138fde0 | 5377 | .rpc_message = &msg, |
c970aa85 TM |
5378 | .callback_ops = &nfs4_delegreturn_ops, |
5379 | .flags = RPC_TASK_ASYNC, | |
5380 | }; | |
e6f81075 | 5381 | int status = 0; |
fe650407 | 5382 | |
8535b2be | 5383 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5384 | if (data == NULL) |
5385 | return -ENOMEM; | |
a9c92d6b | 5386 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5387 | data->args.fhandle = &data->fh; |
5388 | data->args.stateid = &data->stateid; | |
9e907fec | 5389 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5390 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5391 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5392 | data->res.fattr = &data->fattr; |
5393 | data->res.server = server; | |
5138fde0 | 5394 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5395 | data->timestamp = jiffies; |
fe650407 | 5396 | data->rpc_status = 0; |
ea7c38fe TM |
5397 | data->inode = nfs_igrab_and_active(inode); |
5398 | if (data->inode) | |
5399 | data->roc = nfs4_roc(inode); | |
fe650407 | 5400 | |
c970aa85 | 5401 | task_setup_data.callback_data = data; |
1174dd1f TM |
5402 | msg.rpc_argp = &data->args; |
5403 | msg.rpc_resp = &data->res; | |
c970aa85 | 5404 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5405 | if (IS_ERR(task)) |
fe650407 | 5406 | return PTR_ERR(task); |
e6f81075 TM |
5407 | if (!issync) |
5408 | goto out; | |
fe650407 | 5409 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5410 | if (status != 0) |
5411 | goto out; | |
5412 | status = data->rpc_status; | |
e144cbcc TM |
5413 | if (status == 0) |
5414 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5415 | else | |
5416 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5417 | out: |
e6b3c4db | 5418 | rpc_put_task(task); |
fe650407 | 5419 | return status; |
1da177e4 LT |
5420 | } |
5421 | ||
e6f81075 | 5422 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5423 | { |
5424 | struct nfs_server *server = NFS_SERVER(inode); | |
5425 | struct nfs4_exception exception = { }; | |
5426 | int err; | |
5427 | do { | |
e6f81075 | 5428 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5429 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5430 | switch (err) { |
5431 | case -NFS4ERR_STALE_STATEID: | |
5432 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5433 | case 0: |
5434 | return 0; | |
5435 | } | |
5436 | err = nfs4_handle_exception(server, err, &exception); | |
5437 | } while (exception.retry); | |
5438 | return err; | |
5439 | } | |
5440 | ||
5441 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5442 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5443 | ||
5444 | /* | |
5445 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5446 | */ | |
5447 | static unsigned long | |
5448 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5449 | { | |
416ad3c9 | 5450 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5451 | timeout <<= 1; |
5452 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5453 | return NFS4_LOCK_MAXTIMEOUT; | |
5454 | return timeout; | |
5455 | } | |
5456 | ||
1da177e4 LT |
5457 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5458 | { | |
5459 | struct inode *inode = state->inode; | |
5460 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5461 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5462 | struct nfs_lockt_args arg = { |
1da177e4 | 5463 | .fh = NFS_FH(inode), |
911d1aaf | 5464 | .fl = request, |
1da177e4 | 5465 | }; |
911d1aaf TM |
5466 | struct nfs_lockt_res res = { |
5467 | .denied = request, | |
1da177e4 LT |
5468 | }; |
5469 | struct rpc_message msg = { | |
5470 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5471 | .rpc_argp = &arg, | |
5472 | .rpc_resp = &res, | |
5473 | .rpc_cred = state->owner->so_cred, | |
5474 | }; | |
1da177e4 LT |
5475 | struct nfs4_lock_state *lsp; |
5476 | int status; | |
5477 | ||
911d1aaf | 5478 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5479 | status = nfs4_set_lock_state(state, request); |
5480 | if (status != 0) | |
5481 | goto out; | |
5482 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5483 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5484 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5485 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5486 | switch (status) { |
5487 | case 0: | |
5488 | request->fl_type = F_UNLCK; | |
5489 | break; | |
5490 | case -NFS4ERR_DENIED: | |
5491 | status = 0; | |
1da177e4 | 5492 | } |
70cc6487 | 5493 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5494 | request->fl_ops = NULL; |
8d0a8a9d | 5495 | out: |
1da177e4 LT |
5496 | return status; |
5497 | } | |
5498 | ||
5499 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5500 | { | |
5501 | struct nfs4_exception exception = { }; | |
5502 | int err; | |
5503 | ||
5504 | do { | |
d1b748a5 TM |
5505 | err = _nfs4_proc_getlk(state, cmd, request); |
5506 | trace_nfs4_get_lock(request, state, cmd, err); | |
5507 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5508 | &exception); |
5509 | } while (exception.retry); | |
5510 | return err; | |
5511 | } | |
5512 | ||
83bfff23 | 5513 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 | 5514 | { |
4f656367 | 5515 | return locks_lock_inode_wait(inode, fl); |
1da177e4 LT |
5516 | } |
5517 | ||
faf5f49c | 5518 | struct nfs4_unlockdata { |
911d1aaf TM |
5519 | struct nfs_locku_args arg; |
5520 | struct nfs_locku_res res; | |
faf5f49c TM |
5521 | struct nfs4_lock_state *lsp; |
5522 | struct nfs_open_context *ctx; | |
911d1aaf | 5523 | struct file_lock fl; |
516285eb | 5524 | struct nfs_server *server; |
26e976a8 | 5525 | unsigned long timestamp; |
faf5f49c TM |
5526 | }; |
5527 | ||
911d1aaf TM |
5528 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5529 | struct nfs_open_context *ctx, | |
5530 | struct nfs4_lock_state *lsp, | |
5531 | struct nfs_seqid *seqid) | |
5532 | { | |
5533 | struct nfs4_unlockdata *p; | |
5534 | struct inode *inode = lsp->ls_state->inode; | |
5535 | ||
8535b2be | 5536 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5537 | if (p == NULL) |
5538 | return NULL; | |
5539 | p->arg.fh = NFS_FH(inode); | |
5540 | p->arg.fl = &p->fl; | |
5541 | p->arg.seqid = seqid; | |
c1d51931 | 5542 | p->res.seqid = seqid; |
911d1aaf TM |
5543 | p->lsp = lsp; |
5544 | atomic_inc(&lsp->ls_count); | |
5545 | /* Ensure we don't close file until we're done freeing locks! */ | |
5546 | p->ctx = get_nfs_open_context(ctx); | |
5547 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5548 | p->server = NFS_SERVER(inode); | |
5549 | return p; | |
5550 | } | |
5551 | ||
06f814a3 | 5552 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5553 | { |
963d8fe5 | 5554 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5555 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5556 | nfs4_put_lock_state(calldata->lsp); |
5557 | put_nfs_open_context(calldata->ctx); | |
5558 | kfree(calldata); | |
faf5f49c TM |
5559 | } |
5560 | ||
963d8fe5 | 5561 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5562 | { |
963d8fe5 | 5563 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5564 | |
14516c3a TM |
5565 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5566 | return; | |
faf5f49c TM |
5567 | switch (task->tk_status) { |
5568 | case 0: | |
26e976a8 | 5569 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5570 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5571 | if (nfs4_update_lock_stateid(calldata->lsp, |
5572 | &calldata->res.stateid)) | |
5573 | break; | |
9e33bed5 TM |
5574 | case -NFS4ERR_BAD_STATEID: |
5575 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5576 | case -NFS4ERR_STALE_STATEID: |
5577 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5578 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5579 | &calldata->lsp->ls_stateid)) | |
5580 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5581 | break; |
5582 | default: | |
8478eaa1 N |
5583 | if (nfs4_async_handle_error(task, calldata->server, |
5584 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5585 | rpc_restart_call_prepare(task); |
faf5f49c | 5586 | } |
2b1bc308 | 5587 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5588 | } |
5589 | ||
4ce70ada | 5590 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5591 | { |
4ce70ada | 5592 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5593 | |
911d1aaf | 5594 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5595 | goto out_wait; |
425c1d4e | 5596 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5597 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5598 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5599 | goto out_no_action; |
faf5f49c | 5600 | } |
26e976a8 | 5601 | calldata->timestamp = jiffies; |
035168ab | 5602 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5603 | &calldata->arg.seq_args, |
2240a9e2 TM |
5604 | &calldata->res.seq_res, |
5605 | task) != 0) | |
5606 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5607 | return; |
5608 | out_no_action: | |
5609 | task->tk_action = NULL; | |
5610 | out_wait: | |
5611 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5612 | } |
5613 | ||
963d8fe5 | 5614 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5615 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5616 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5617 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5618 | }; |
5619 | ||
a5d16a4d TM |
5620 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5621 | struct nfs_open_context *ctx, | |
5622 | struct nfs4_lock_state *lsp, | |
5623 | struct nfs_seqid *seqid) | |
5624 | { | |
5625 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5626 | struct rpc_message msg = { |
5627 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5628 | .rpc_cred = ctx->cred, | |
5629 | }; | |
c970aa85 TM |
5630 | struct rpc_task_setup task_setup_data = { |
5631 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5632 | .rpc_message = &msg, |
c970aa85 | 5633 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5634 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5635 | .flags = RPC_TASK_ASYNC, |
5636 | }; | |
a5d16a4d | 5637 | |
fa940720 WAA |
5638 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5639 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5640 | ||
137d6aca FF |
5641 | /* Ensure this is an unlock - when canceling a lock, the |
5642 | * canceled lock is passed in, and it won't be an unlock. | |
5643 | */ | |
5644 | fl->fl_type = F_UNLCK; | |
5645 | ||
a5d16a4d TM |
5646 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5647 | if (data == NULL) { | |
5648 | nfs_free_seqid(seqid); | |
5649 | return ERR_PTR(-ENOMEM); | |
5650 | } | |
5651 | ||
a9c92d6b | 5652 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5653 | msg.rpc_argp = &data->arg; |
5654 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5655 | task_setup_data.callback_data = data; |
5656 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5657 | } |
5658 | ||
faf5f49c TM |
5659 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5660 | { | |
65b62a29 TM |
5661 | struct inode *inode = state->inode; |
5662 | struct nfs4_state_owner *sp = state->owner; | |
5663 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5664 | struct nfs_seqid *seqid; |
1da177e4 | 5665 | struct nfs4_lock_state *lsp; |
06f814a3 | 5666 | struct rpc_task *task; |
b4019c0e | 5667 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5668 | int status = 0; |
536ff0f8 | 5669 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5670 | |
8d0a8a9d | 5671 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5672 | /* Unlock _before_ we do the RPC call */ |
5673 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5674 | /* Exclude nfs_delegation_claim_locks() */ |
5675 | mutex_lock(&sp->so_delegreturn_mutex); | |
5676 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5677 | down_read(&nfsi->rwsem); |
83bfff23 | 5678 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5679 | up_read(&nfsi->rwsem); |
65b62a29 | 5680 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5681 | goto out; |
19e03c57 TM |
5682 | } |
5683 | up_read(&nfsi->rwsem); | |
65b62a29 | 5684 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5685 | if (status != 0) |
9b073574 TM |
5686 | goto out; |
5687 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5688 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5689 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5690 | goto out; | |
b4019c0e TM |
5691 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5692 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5693 | status = -ENOMEM; |
badc76dd | 5694 | if (IS_ERR(seqid)) |
9b073574 | 5695 | goto out; |
cd3758e3 | 5696 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5697 | status = PTR_ERR(task); |
5698 | if (IS_ERR(task)) | |
9b073574 | 5699 | goto out; |
a5d16a4d | 5700 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5701 | rpc_put_task(task); |
9b073574 | 5702 | out: |
536ff0f8 | 5703 | request->fl_flags = fl_flags; |
d1b748a5 | 5704 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5705 | return status; |
5706 | } | |
5707 | ||
a5d16a4d TM |
5708 | struct nfs4_lockdata { |
5709 | struct nfs_lock_args arg; | |
5710 | struct nfs_lock_res res; | |
5711 | struct nfs4_lock_state *lsp; | |
5712 | struct nfs_open_context *ctx; | |
5713 | struct file_lock fl; | |
26e976a8 | 5714 | unsigned long timestamp; |
a5d16a4d TM |
5715 | int rpc_status; |
5716 | int cancelled; | |
66179efe | 5717 | struct nfs_server *server; |
a5d16a4d TM |
5718 | }; |
5719 | ||
5720 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5721 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5722 | gfp_t gfp_mask) | |
1da177e4 | 5723 | { |
a5d16a4d TM |
5724 | struct nfs4_lockdata *p; |
5725 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5726 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5727 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5728 | |
8535b2be | 5729 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5730 | if (p == NULL) |
5731 | return NULL; | |
5732 | ||
5733 | p->arg.fh = NFS_FH(inode); | |
5734 | p->arg.fl = &p->fl; | |
8535b2be | 5735 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5736 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5737 | goto out_free; |
b4019c0e TM |
5738 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5739 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5740 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5741 | goto out_free_seqid; |
7539bbab | 5742 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5743 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5744 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5745 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5746 | p->lsp = lsp; |
66179efe | 5747 | p->server = server; |
a5d16a4d TM |
5748 | atomic_inc(&lsp->ls_count); |
5749 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5750 | get_file(fl->fl_file); |
a5d16a4d TM |
5751 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5752 | return p; | |
2f74c0a0 TM |
5753 | out_free_seqid: |
5754 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5755 | out_free: |
5756 | kfree(p); | |
5757 | return NULL; | |
5758 | } | |
5759 | ||
5760 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5761 | { | |
5762 | struct nfs4_lockdata *data = calldata; | |
5763 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5764 | |
3110ff80 | 5765 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5766 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5767 | goto out_wait; |
a5d16a4d | 5768 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5769 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5770 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5771 | goto out_release_lock_seqid; |
8fe72bac | 5772 | } |
425c1d4e TM |
5773 | nfs4_stateid_copy(&data->arg.open_stateid, |
5774 | &state->open_stateid); | |
a5d16a4d | 5775 | data->arg.new_lock_owner = 1; |
c1d51931 | 5776 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5777 | } else { |
2f74c0a0 | 5778 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5779 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5780 | &data->lsp->ls_stateid); | |
5781 | } | |
5d422301 TM |
5782 | if (!nfs4_valid_open_stateid(state)) { |
5783 | data->rpc_status = -EBADF; | |
5784 | task->tk_action = NULL; | |
5785 | goto out_release_open_seqid; | |
5786 | } | |
26e976a8 | 5787 | data->timestamp = jiffies; |
035168ab TM |
5788 | if (nfs4_setup_sequence(data->server, |
5789 | &data->arg.seq_args, | |
2240a9e2 | 5790 | &data->res.seq_res, |
d9afbd1b | 5791 | task) == 0) |
66179efe | 5792 | return; |
5d422301 | 5793 | out_release_open_seqid: |
2240a9e2 TM |
5794 | nfs_release_seqid(data->arg.open_seqid); |
5795 | out_release_lock_seqid: | |
5796 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5797 | out_wait: |
5798 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5799 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5800 | } |
5801 | ||
a5d16a4d TM |
5802 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5803 | { | |
5804 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5805 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5806 | |
3110ff80 | 5807 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5808 | |
14516c3a TM |
5809 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5810 | return; | |
66179efe | 5811 | |
a5d16a4d | 5812 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5813 | switch (task->tk_status) { |
5814 | case 0: | |
2b0143b5 | 5815 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5816 | data->timestamp); |
c69899a1 TM |
5817 | if (data->arg.new_lock) { |
5818 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5819 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5820 | rpc_restart_call_prepare(task); |
5821 | break; | |
5822 | } | |
5823 | } | |
39071e6f TM |
5824 | if (data->arg.new_lock_owner != 0) { |
5825 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5826 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5827 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5828 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5829 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5830 | break; |
5831 | case -NFS4ERR_BAD_STATEID: | |
5832 | case -NFS4ERR_OLD_STATEID: | |
5833 | case -NFS4ERR_STALE_STATEID: | |
5834 | case -NFS4ERR_EXPIRED: | |
5835 | if (data->arg.new_lock_owner != 0) { | |
5836 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5837 | &lsp->ls_state->open_stateid)) | |
5838 | rpc_restart_call_prepare(task); | |
5839 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5840 | &lsp->ls_stateid)) | |
5841 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5842 | } |
3110ff80 | 5843 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5844 | } |
5845 | ||
5846 | static void nfs4_lock_release(void *calldata) | |
5847 | { | |
5848 | struct nfs4_lockdata *data = calldata; | |
5849 | ||
3110ff80 | 5850 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5851 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5852 | if (data->cancelled != 0) { |
5853 | struct rpc_task *task; | |
5854 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5855 | data->arg.lock_seqid); | |
5856 | if (!IS_ERR(task)) | |
bf294b41 | 5857 | rpc_put_task_async(task); |
3110ff80 | 5858 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5859 | } else |
5860 | nfs_free_seqid(data->arg.lock_seqid); | |
5861 | nfs4_put_lock_state(data->lsp); | |
5862 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5863 | fput(data->fl.fl_file); |
a5d16a4d | 5864 | kfree(data); |
3110ff80 | 5865 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5866 | } |
5867 | ||
5868 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5869 | .rpc_call_prepare = nfs4_lock_prepare, | |
5870 | .rpc_call_done = nfs4_lock_done, | |
5871 | .rpc_release = nfs4_lock_release, | |
5872 | }; | |
5873 | ||
2bee72a6 TM |
5874 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5875 | { | |
2bee72a6 TM |
5876 | switch (error) { |
5877 | case -NFS4ERR_ADMIN_REVOKED: | |
5878 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5879 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5880 | if (new_lock_owner != 0 || |
795a88c9 | 5881 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5882 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5883 | break; |
5884 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5885 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5886 | case -NFS4ERR_EXPIRED: |
5887 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5888 | }; |
5889 | } | |
5890 | ||
afe6c27c | 5891 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5892 | { |
5893 | struct nfs4_lockdata *data; | |
5894 | struct rpc_task *task; | |
5138fde0 TM |
5895 | struct rpc_message msg = { |
5896 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5897 | .rpc_cred = state->owner->so_cred, | |
5898 | }; | |
c970aa85 TM |
5899 | struct rpc_task_setup task_setup_data = { |
5900 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5901 | .rpc_message = &msg, |
c970aa85 | 5902 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5903 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5904 | .flags = RPC_TASK_ASYNC, |
5905 | }; | |
a5d16a4d TM |
5906 | int ret; |
5907 | ||
3110ff80 | 5908 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5909 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5910 | fl->fl_u.nfs4_fl.owner, |
5911 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5912 | if (data == NULL) |
5913 | return -ENOMEM; | |
5914 | if (IS_SETLKW(cmd)) | |
5915 | data->arg.block = 1; | |
a9c92d6b | 5916 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5917 | msg.rpc_argp = &data->arg; |
5918 | msg.rpc_resp = &data->res; | |
c970aa85 | 5919 | task_setup_data.callback_data = data; |
8fe72bac TM |
5920 | if (recovery_type > NFS_LOCK_NEW) { |
5921 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5922 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5923 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5924 | } else |
5925 | data->arg.new_lock = 1; | |
c970aa85 | 5926 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5927 | if (IS_ERR(task)) |
a5d16a4d | 5928 | return PTR_ERR(task); |
a5d16a4d TM |
5929 | ret = nfs4_wait_for_completion_rpc_task(task); |
5930 | if (ret == 0) { | |
5931 | ret = data->rpc_status; | |
2bee72a6 TM |
5932 | if (ret) |
5933 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5934 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5935 | } else |
5936 | data->cancelled = 1; | |
e6b3c4db | 5937 | rpc_put_task(task); |
3110ff80 | 5938 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5939 | return ret; |
1da177e4 LT |
5940 | } |
5941 | ||
5942 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5943 | { | |
202b50dc | 5944 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5945 | struct nfs4_exception exception = { |
5946 | .inode = state->inode, | |
5947 | }; | |
202b50dc TM |
5948 | int err; |
5949 | ||
5950 | do { | |
42a2d13e TM |
5951 | /* Cache the lock if possible... */ |
5952 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5953 | return 0; | |
afe6c27c | 5954 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5955 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5956 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5957 | break; |
5958 | nfs4_handle_exception(server, err, &exception); | |
5959 | } while (exception.retry); | |
5960 | return err; | |
1da177e4 LT |
5961 | } |
5962 | ||
5963 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5964 | { | |
202b50dc | 5965 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5966 | struct nfs4_exception exception = { |
5967 | .inode = state->inode, | |
5968 | }; | |
202b50dc TM |
5969 | int err; |
5970 | ||
6bfc93ef TM |
5971 | err = nfs4_set_lock_state(state, request); |
5972 | if (err != 0) | |
5973 | return err; | |
f6de7a39 | 5974 | if (!recover_lost_locks) { |
ef1820f9 N |
5975 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5976 | return 0; | |
5977 | } | |
202b50dc | 5978 | do { |
42a2d13e TM |
5979 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5980 | return 0; | |
afe6c27c | 5981 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5982 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5983 | switch (err) { |
5984 | default: | |
5985 | goto out; | |
5986 | case -NFS4ERR_GRACE: | |
5987 | case -NFS4ERR_DELAY: | |
5988 | nfs4_handle_exception(server, err, &exception); | |
5989 | err = 0; | |
5990 | } | |
202b50dc | 5991 | } while (exception.retry); |
a9ed2e25 | 5992 | out: |
202b50dc | 5993 | return err; |
1da177e4 LT |
5994 | } |
5995 | ||
f062eb6c | 5996 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5997 | /** |
5998 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5999 | * | |
6000 | * @state: NFSv4 state for an inode | |
6001 | * | |
6002 | * Returns NFS_OK if recovery for this stateid is now finished. | |
6003 | * Otherwise a negative NFS4ERR value is returned. | |
6004 | */ | |
b01dd1d8 | 6005 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 6006 | { |
eb64cf96 | 6007 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 6008 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
6009 | struct nfs_server *server = NFS_SERVER(state->inode); |
6010 | ||
b01dd1d8 | 6011 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 6012 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
6013 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
6014 | ||
6015 | status = nfs41_test_stateid(server, | |
6016 | &lsp->ls_stateid, | |
6017 | cred); | |
08cb47fa | 6018 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 6019 | if (status != NFS_OK) { |
3e60ffdd CL |
6020 | /* Free the stateid unless the server |
6021 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
6022 | if (status != -NFS4ERR_BAD_STATEID) |
6023 | nfs41_free_stateid(server, | |
ab7cb0df TM |
6024 | &lsp->ls_stateid, |
6025 | cred); | |
795a88c9 | 6026 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
6027 | ret = status; |
6028 | } | |
6029 | } | |
6030 | }; | |
6031 | ||
6032 | return ret; | |
6033 | } | |
6034 | ||
6035 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6036 | { | |
6037 | int status = NFS_OK; | |
6038 | ||
6039 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
6040 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
6041 | if (status != NFS_OK) |
6042 | status = nfs4_lock_expired(state, request); | |
6043 | return status; | |
f062eb6c BS |
6044 | } |
6045 | #endif | |
6046 | ||
1da177e4 LT |
6047 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6048 | { | |
19e03c57 | 6049 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 6050 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6051 | int status = -ENOLCK; |
1da177e4 | 6052 | |
8e469ebd TM |
6053 | if ((fl_flags & FL_POSIX) && |
6054 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6055 | goto out; | |
6bfc93ef | 6056 | /* Is this a delegated open? */ |
6bfc93ef TM |
6057 | status = nfs4_set_lock_state(state, request); |
6058 | if (status != 0) | |
6059 | goto out; | |
01c3b861 | 6060 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6061 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6062 | if (status < 0) |
6063 | goto out; | |
19e03c57 | 6064 | down_read(&nfsi->rwsem); |
01c3b861 | 6065 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6066 | /* Yes: cache locks! */ |
01c3b861 | 6067 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6068 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6069 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6070 | up_read(&nfsi->rwsem); |
9a99af49 | 6071 | goto out; |
9a99af49 | 6072 | } |
19e03c57 | 6073 | up_read(&nfsi->rwsem); |
c69899a1 | 6074 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6075 | out: |
6076 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6077 | return status; |
6078 | } | |
6079 | ||
6080 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6081 | { | |
a1d0b5ee TM |
6082 | struct nfs4_exception exception = { |
6083 | .state = state, | |
05ffe24f | 6084 | .inode = state->inode, |
a1d0b5ee | 6085 | }; |
1da177e4 LT |
6086 | int err; |
6087 | ||
6088 | do { | |
965b5d67 | 6089 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 6090 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
6091 | if (err == -NFS4ERR_DENIED) |
6092 | err = -EAGAIN; | |
1da177e4 | 6093 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6094 | err, &exception); |
1da177e4 LT |
6095 | } while (exception.retry); |
6096 | return err; | |
6097 | } | |
6098 | ||
6099 | static int | |
6100 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6101 | { | |
6102 | struct nfs_open_context *ctx; | |
6103 | struct nfs4_state *state; | |
6104 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6105 | int status; | |
6106 | ||
6107 | /* verify open state */ | |
cd3758e3 | 6108 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6109 | state = ctx->state; |
6110 | ||
6111 | if (request->fl_start < 0 || request->fl_end < 0) | |
6112 | return -EINVAL; | |
6113 | ||
d953126a TM |
6114 | if (IS_GETLK(cmd)) { |
6115 | if (state != NULL) | |
6116 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6117 | return 0; | |
6118 | } | |
1da177e4 LT |
6119 | |
6120 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6121 | return -EINVAL; | |
6122 | ||
d953126a TM |
6123 | if (request->fl_type == F_UNLCK) { |
6124 | if (state != NULL) | |
6125 | return nfs4_proc_unlck(state, cmd, request); | |
6126 | return 0; | |
6127 | } | |
1da177e4 | 6128 | |
d953126a TM |
6129 | if (state == NULL) |
6130 | return -ENOLCK; | |
55725513 TM |
6131 | /* |
6132 | * Don't rely on the VFS having checked the file open mode, | |
6133 | * since it won't do this for flock() locks. | |
6134 | */ | |
f44106e2 | 6135 | switch (request->fl_type) { |
55725513 TM |
6136 | case F_RDLCK: |
6137 | if (!(filp->f_mode & FMODE_READ)) | |
6138 | return -EBADF; | |
6139 | break; | |
6140 | case F_WRLCK: | |
6141 | if (!(filp->f_mode & FMODE_WRITE)) | |
6142 | return -EBADF; | |
6143 | } | |
6144 | ||
1da177e4 LT |
6145 | do { |
6146 | status = nfs4_proc_setlk(state, cmd, request); | |
6147 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6148 | break; | |
6149 | timeout = nfs4_set_lock_task_retry(timeout); | |
6150 | status = -ERESTARTSYS; | |
6151 | if (signalled()) | |
6152 | break; | |
6153 | } while(status < 0); | |
1da177e4 LT |
6154 | return status; |
6155 | } | |
6156 | ||
db4f2e63 | 6157 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6158 | { |
6159 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6160 | int err; |
6161 | ||
6162 | err = nfs4_set_lock_state(state, fl); | |
6163 | if (err != 0) | |
db4f2e63 | 6164 | return err; |
4a706fa0 | 6165 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6166 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6167 | } |
6b3b5496 | 6168 | |
cf470c3e TM |
6169 | struct nfs_release_lockowner_data { |
6170 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6171 | struct nfs_server *server; |
cf470c3e | 6172 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6173 | struct nfs_release_lockowner_res res; |
60ea6812 | 6174 | unsigned long timestamp; |
cf470c3e TM |
6175 | }; |
6176 | ||
fbd4bfd1 CL |
6177 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6178 | { | |
6179 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6180 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6181 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6182 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6183 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6184 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6185 | } |
6186 | ||
6187 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6188 | { | |
6189 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6190 | struct nfs_server *server = data->server; |
6191 | ||
b7e63a10 | 6192 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6193 | |
6194 | switch (task->tk_status) { | |
6195 | case 0: | |
6196 | renew_lease(server, data->timestamp); | |
6197 | break; | |
6198 | case -NFS4ERR_STALE_CLIENTID: | |
6199 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6200 | nfs4_schedule_lease_recovery(server->nfs_client); |
6201 | break; | |
60ea6812 CL |
6202 | case -NFS4ERR_LEASE_MOVED: |
6203 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6204 | if (nfs4_async_handle_error(task, server, |
6205 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6206 | rpc_restart_call_prepare(task); |
6207 | } | |
fbd4bfd1 CL |
6208 | } |
6209 | ||
d3c7b7cc TM |
6210 | static void nfs4_release_lockowner_release(void *calldata) |
6211 | { | |
cf470c3e | 6212 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6213 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6214 | kfree(calldata); |
6215 | } | |
6216 | ||
17280175 | 6217 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6218 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6219 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6220 | .rpc_release = nfs4_release_lockowner_release, |
6221 | }; | |
6222 | ||
f1cdae87 JL |
6223 | static void |
6224 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6225 | { |
cf470c3e | 6226 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6227 | struct rpc_message msg = { |
6228 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6229 | }; | |
6230 | ||
6231 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6232 | return; |
fbd4bfd1 | 6233 | |
cf470c3e TM |
6234 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6235 | if (!data) | |
f1cdae87 | 6236 | return; |
cf470c3e | 6237 | data->lsp = lsp; |
5ae67c4f | 6238 | data->server = server; |
cf470c3e TM |
6239 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6240 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6241 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6242 | |
cf470c3e | 6243 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6244 | msg.rpc_resp = &data->res; |
6245 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6246 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6247 | } |
6248 | ||
aa1870af BF |
6249 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6250 | ||
d9a82a04 AG |
6251 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
6252 | struct dentry *dentry, const char *key, | |
64c2ce8b | 6253 | const void *buf, size_t buflen, |
d9a82a04 | 6254 | int flags) |
6b3b5496 | 6255 | { |
64c2ce8b AK |
6256 | if (strcmp(key, "") != 0) |
6257 | return -EINVAL; | |
4b580ee3 | 6258 | |
2b0143b5 | 6259 | return nfs4_proc_set_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6260 | } |
6261 | ||
d9a82a04 AG |
6262 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
6263 | struct dentry *dentry, const char *key, | |
6264 | void *buf, size_t buflen) | |
6b3b5496 | 6265 | { |
64c2ce8b AK |
6266 | if (strcmp(key, "") != 0) |
6267 | return -EINVAL; | |
aa1870af | 6268 | |
2b0143b5 | 6269 | return nfs4_proc_get_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6270 | } |
6271 | ||
d9a82a04 AG |
6272 | static size_t nfs4_xattr_list_nfs4_acl(const struct xattr_handler *handler, |
6273 | struct dentry *dentry, char *list, | |
64c2ce8b | 6274 | size_t list_len, const char *name, |
d9a82a04 | 6275 | size_t name_len) |
6b3b5496 | 6276 | { |
64c2ce8b | 6277 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 6278 | |
2b0143b5 | 6279 | if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)))) |
096455a2 | 6280 | return 0; |
64c2ce8b AK |
6281 | |
6282 | if (list && len <= list_len) | |
6283 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 6284 | return len; |
6b3b5496 BF |
6285 | } |
6286 | ||
c9bccef6 DQ |
6287 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6288 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
6289 | { | |
6290 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
6291 | } | |
6292 | ||
d9a82a04 AG |
6293 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
6294 | struct dentry *dentry, const char *key, | |
6295 | const void *buf, size_t buflen, | |
6296 | int flags) | |
c9bccef6 DQ |
6297 | { |
6298 | if (security_ismaclabel(key)) | |
6299 | return nfs4_set_security_label(dentry, buf, buflen); | |
6300 | ||
6301 | return -EOPNOTSUPP; | |
6302 | } | |
6303 | ||
d9a82a04 AG |
6304 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
6305 | struct dentry *dentry, const char *key, | |
6306 | void *buf, size_t buflen) | |
c9bccef6 DQ |
6307 | { |
6308 | if (security_ismaclabel(key)) | |
2b0143b5 | 6309 | return nfs4_get_security_label(d_inode(dentry), buf, buflen); |
c9bccef6 DQ |
6310 | return -EOPNOTSUPP; |
6311 | } | |
6312 | ||
d9a82a04 AG |
6313 | static size_t nfs4_xattr_list_nfs4_label(const struct xattr_handler *handler, |
6314 | struct dentry *dentry, char *list, | |
6315 | size_t list_len, const char *name, | |
6316 | size_t name_len) | |
c9bccef6 DQ |
6317 | { |
6318 | size_t len = 0; | |
6319 | ||
2b0143b5 DH |
6320 | if (nfs_server_capable(d_inode(dentry), NFS_CAP_SECURITY_LABEL)) { |
6321 | len = security_inode_listsecurity(d_inode(dentry), NULL, 0); | |
c9bccef6 | 6322 | if (list && len <= list_len) |
2b0143b5 | 6323 | security_inode_listsecurity(d_inode(dentry), list, len); |
c9bccef6 DQ |
6324 | } |
6325 | return len; | |
6326 | } | |
6327 | ||
6328 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6329 | .prefix = XATTR_SECURITY_PREFIX, | |
6330 | .list = nfs4_xattr_list_nfs4_label, | |
6331 | .get = nfs4_xattr_get_nfs4_label, | |
6332 | .set = nfs4_xattr_set_nfs4_label, | |
6333 | }; | |
6334 | #endif | |
6335 | ||
6336 | ||
533eb461 AA |
6337 | /* |
6338 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6339 | */ | |
69aaaae1 TM |
6340 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6341 | { | |
533eb461 AA |
6342 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6343 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6344 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6345 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6346 | return; |
6347 | ||
6348 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6349 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6350 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6351 | fattr->nlink = 2; | |
6352 | } | |
6353 | ||
f05d147f BS |
6354 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6355 | const struct qstr *name, | |
6356 | struct nfs4_fs_locations *fs_locations, | |
6357 | struct page *page) | |
683b57b4 TM |
6358 | { |
6359 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6360 | u32 bitmask[3] = { |
361e624f | 6361 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6362 | }; |
6363 | struct nfs4_fs_locations_arg args = { | |
6364 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6365 | .name = name, |
683b57b4 TM |
6366 | .page = page, |
6367 | .bitmask = bitmask, | |
6368 | }; | |
22958463 BH |
6369 | struct nfs4_fs_locations_res res = { |
6370 | .fs_locations = fs_locations, | |
6371 | }; | |
683b57b4 TM |
6372 | struct rpc_message msg = { |
6373 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6374 | .rpc_argp = &args, | |
22958463 | 6375 | .rpc_resp = &res, |
683b57b4 TM |
6376 | }; |
6377 | int status; | |
6378 | ||
3110ff80 | 6379 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6380 | |
6381 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6382 | * is not supported */ | |
6383 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6384 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6385 | else | |
6386 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6387 | ||
c228fd3a | 6388 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6389 | fs_locations->server = server; |
830b8e33 | 6390 | fs_locations->nlocations = 0; |
f05d147f | 6391 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6392 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6393 | return status; |
6394 | } | |
6395 | ||
f05d147f BS |
6396 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6397 | const struct qstr *name, | |
6398 | struct nfs4_fs_locations *fs_locations, | |
6399 | struct page *page) | |
db0a9593 BS |
6400 | { |
6401 | struct nfs4_exception exception = { }; | |
6402 | int err; | |
6403 | do { | |
078ea3df TM |
6404 | err = _nfs4_proc_fs_locations(client, dir, name, |
6405 | fs_locations, page); | |
6406 | trace_nfs4_get_fs_locations(dir, name, err); | |
6407 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6408 | &exception); |
6409 | } while (exception.retry); | |
6410 | return err; | |
6411 | } | |
6412 | ||
b03d735b CL |
6413 | /* |
6414 | * This operation also signals the server that this client is | |
6415 | * performing migration recovery. The server can stop returning | |
6416 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6417 | * appended to this compound to identify the client ID which is | |
6418 | * performing recovery. | |
6419 | */ | |
6420 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6421 | struct nfs4_fs_locations *locations, | |
6422 | struct page *page, struct rpc_cred *cred) | |
6423 | { | |
6424 | struct nfs_server *server = NFS_SERVER(inode); | |
6425 | struct rpc_clnt *clnt = server->client; | |
6426 | u32 bitmask[2] = { | |
6427 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6428 | }; | |
6429 | struct nfs4_fs_locations_arg args = { | |
6430 | .clientid = server->nfs_client->cl_clientid, | |
6431 | .fh = NFS_FH(inode), | |
6432 | .page = page, | |
6433 | .bitmask = bitmask, | |
6434 | .migration = 1, /* skip LOOKUP */ | |
6435 | .renew = 1, /* append RENEW */ | |
6436 | }; | |
6437 | struct nfs4_fs_locations_res res = { | |
6438 | .fs_locations = locations, | |
6439 | .migration = 1, | |
6440 | .renew = 1, | |
6441 | }; | |
6442 | struct rpc_message msg = { | |
6443 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6444 | .rpc_argp = &args, | |
6445 | .rpc_resp = &res, | |
6446 | .rpc_cred = cred, | |
6447 | }; | |
6448 | unsigned long now = jiffies; | |
6449 | int status; | |
6450 | ||
6451 | nfs_fattr_init(&locations->fattr); | |
6452 | locations->server = server; | |
6453 | locations->nlocations = 0; | |
6454 | ||
6455 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6456 | nfs4_set_sequence_privileged(&args.seq_args); | |
6457 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6458 | &args.seq_args, &res.seq_res); | |
6459 | if (status) | |
6460 | return status; | |
6461 | ||
6462 | renew_lease(server, now); | |
6463 | return 0; | |
6464 | } | |
6465 | ||
6466 | #ifdef CONFIG_NFS_V4_1 | |
6467 | ||
6468 | /* | |
6469 | * This operation also signals the server that this client is | |
6470 | * performing migration recovery. The server can stop asserting | |
6471 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6472 | * performing this operation is identified in the SEQUENCE | |
6473 | * operation in this compound. | |
6474 | * | |
6475 | * When the client supports GETATTR(fs_locations_info), it can | |
6476 | * be plumbed in here. | |
6477 | */ | |
6478 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6479 | struct nfs4_fs_locations *locations, | |
6480 | struct page *page, struct rpc_cred *cred) | |
6481 | { | |
6482 | struct nfs_server *server = NFS_SERVER(inode); | |
6483 | struct rpc_clnt *clnt = server->client; | |
6484 | u32 bitmask[2] = { | |
6485 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6486 | }; | |
6487 | struct nfs4_fs_locations_arg args = { | |
6488 | .fh = NFS_FH(inode), | |
6489 | .page = page, | |
6490 | .bitmask = bitmask, | |
6491 | .migration = 1, /* skip LOOKUP */ | |
6492 | }; | |
6493 | struct nfs4_fs_locations_res res = { | |
6494 | .fs_locations = locations, | |
6495 | .migration = 1, | |
6496 | }; | |
6497 | struct rpc_message msg = { | |
6498 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6499 | .rpc_argp = &args, | |
6500 | .rpc_resp = &res, | |
6501 | .rpc_cred = cred, | |
6502 | }; | |
6503 | int status; | |
6504 | ||
6505 | nfs_fattr_init(&locations->fattr); | |
6506 | locations->server = server; | |
6507 | locations->nlocations = 0; | |
6508 | ||
6509 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6510 | nfs4_set_sequence_privileged(&args.seq_args); | |
6511 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6512 | &args.seq_args, &res.seq_res); | |
6513 | if (status == NFS4_OK && | |
6514 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6515 | status = -NFS4ERR_LEASE_MOVED; | |
6516 | return status; | |
6517 | } | |
6518 | ||
6519 | #endif /* CONFIG_NFS_V4_1 */ | |
6520 | ||
6521 | /** | |
6522 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6523 | * @inode: inode on FSID that is migrating | |
6524 | * @locations: result of query | |
6525 | * @page: buffer | |
6526 | * @cred: credential to use for this operation | |
6527 | * | |
6528 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6529 | * operation failed, or a negative errno if a local error occurred. | |
6530 | * | |
6531 | * On success, "locations" is filled in, but if the server has | |
6532 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6533 | * asserted. | |
6534 | * | |
6535 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6536 | * from this client that require migration recovery. | |
6537 | */ | |
6538 | int nfs4_proc_get_locations(struct inode *inode, | |
6539 | struct nfs4_fs_locations *locations, | |
6540 | struct page *page, struct rpc_cred *cred) | |
6541 | { | |
6542 | struct nfs_server *server = NFS_SERVER(inode); | |
6543 | struct nfs_client *clp = server->nfs_client; | |
6544 | const struct nfs4_mig_recovery_ops *ops = | |
6545 | clp->cl_mvops->mig_recovery_ops; | |
6546 | struct nfs4_exception exception = { }; | |
6547 | int status; | |
6548 | ||
6549 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6550 | (unsigned long long)server->fsid.major, | |
6551 | (unsigned long long)server->fsid.minor, | |
6552 | clp->cl_hostname); | |
6553 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6554 | ||
6555 | do { | |
6556 | status = ops->get_locations(inode, locations, page, cred); | |
6557 | if (status != -NFS4ERR_DELAY) | |
6558 | break; | |
6559 | nfs4_handle_exception(server, status, &exception); | |
6560 | } while (exception.retry); | |
6561 | return status; | |
6562 | } | |
6563 | ||
44c99933 CL |
6564 | /* |
6565 | * This operation also signals the server that this client is | |
6566 | * performing "lease moved" recovery. The server can stop | |
6567 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6568 | * is appended to this compound to identify the client ID which is | |
6569 | * performing recovery. | |
6570 | */ | |
6571 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6572 | { | |
6573 | struct nfs_server *server = NFS_SERVER(inode); | |
6574 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6575 | struct rpc_clnt *clnt = server->client; | |
6576 | struct nfs4_fsid_present_arg args = { | |
6577 | .fh = NFS_FH(inode), | |
6578 | .clientid = clp->cl_clientid, | |
6579 | .renew = 1, /* append RENEW */ | |
6580 | }; | |
6581 | struct nfs4_fsid_present_res res = { | |
6582 | .renew = 1, | |
6583 | }; | |
6584 | struct rpc_message msg = { | |
6585 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6586 | .rpc_argp = &args, | |
6587 | .rpc_resp = &res, | |
6588 | .rpc_cred = cred, | |
6589 | }; | |
6590 | unsigned long now = jiffies; | |
6591 | int status; | |
6592 | ||
6593 | res.fh = nfs_alloc_fhandle(); | |
6594 | if (res.fh == NULL) | |
6595 | return -ENOMEM; | |
6596 | ||
6597 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6598 | nfs4_set_sequence_privileged(&args.seq_args); | |
6599 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6600 | &args.seq_args, &res.seq_res); | |
6601 | nfs_free_fhandle(res.fh); | |
6602 | if (status) | |
6603 | return status; | |
6604 | ||
6605 | do_renew_lease(clp, now); | |
6606 | return 0; | |
6607 | } | |
6608 | ||
6609 | #ifdef CONFIG_NFS_V4_1 | |
6610 | ||
6611 | /* | |
6612 | * This operation also signals the server that this client is | |
6613 | * performing "lease moved" recovery. The server can stop asserting | |
6614 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6615 | * this operation is identified in the SEQUENCE operation in this | |
6616 | * compound. | |
6617 | */ | |
6618 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6619 | { | |
6620 | struct nfs_server *server = NFS_SERVER(inode); | |
6621 | struct rpc_clnt *clnt = server->client; | |
6622 | struct nfs4_fsid_present_arg args = { | |
6623 | .fh = NFS_FH(inode), | |
6624 | }; | |
6625 | struct nfs4_fsid_present_res res = { | |
6626 | }; | |
6627 | struct rpc_message msg = { | |
6628 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6629 | .rpc_argp = &args, | |
6630 | .rpc_resp = &res, | |
6631 | .rpc_cred = cred, | |
6632 | }; | |
6633 | int status; | |
6634 | ||
6635 | res.fh = nfs_alloc_fhandle(); | |
6636 | if (res.fh == NULL) | |
6637 | return -ENOMEM; | |
6638 | ||
6639 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6640 | nfs4_set_sequence_privileged(&args.seq_args); | |
6641 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6642 | &args.seq_args, &res.seq_res); | |
6643 | nfs_free_fhandle(res.fh); | |
6644 | if (status == NFS4_OK && | |
6645 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6646 | status = -NFS4ERR_LEASE_MOVED; | |
6647 | return status; | |
6648 | } | |
6649 | ||
6650 | #endif /* CONFIG_NFS_V4_1 */ | |
6651 | ||
6652 | /** | |
6653 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6654 | * @inode: inode on FSID to check | |
6655 | * @cred: credential to use for this operation | |
6656 | * | |
6657 | * Server indicates whether the FSID is present, moved, or not | |
6658 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6659 | * condition for this client ID. | |
6660 | * | |
6661 | * Returns NFS4_OK if the FSID is present on this server, | |
6662 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6663 | * NFS4ERR code if some error occurred on the server, or a | |
6664 | * negative errno if a local failure occurred. | |
6665 | */ | |
6666 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6667 | { | |
6668 | struct nfs_server *server = NFS_SERVER(inode); | |
6669 | struct nfs_client *clp = server->nfs_client; | |
6670 | const struct nfs4_mig_recovery_ops *ops = | |
6671 | clp->cl_mvops->mig_recovery_ops; | |
6672 | struct nfs4_exception exception = { }; | |
6673 | int status; | |
6674 | ||
6675 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6676 | (unsigned long long)server->fsid.major, | |
6677 | (unsigned long long)server->fsid.minor, | |
6678 | clp->cl_hostname); | |
6679 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6680 | ||
6681 | do { | |
6682 | status = ops->fsid_present(inode, cred); | |
6683 | if (status != -NFS4ERR_DELAY) | |
6684 | break; | |
6685 | nfs4_handle_exception(server, status, &exception); | |
6686 | } while (exception.retry); | |
6687 | return status; | |
6688 | } | |
6689 | ||
5ec16a85 | 6690 | /** |
a5250def WAA |
6691 | * If 'use_integrity' is true and the state managment nfs_client |
6692 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6693 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6694 | * Considerations sections. Otherwise, just use the user cred with the | |
6695 | * filesystem's rpc_client. | |
5ec16a85 | 6696 | */ |
a5250def | 6697 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6698 | { |
6699 | int status; | |
6700 | struct nfs4_secinfo_arg args = { | |
6701 | .dir_fh = NFS_FH(dir), | |
6702 | .name = name, | |
6703 | }; | |
6704 | struct nfs4_secinfo_res res = { | |
6705 | .flavors = flavors, | |
6706 | }; | |
6707 | struct rpc_message msg = { | |
6708 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6709 | .rpc_argp = &args, | |
6710 | .rpc_resp = &res, | |
6711 | }; | |
a5250def | 6712 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6713 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6714 | |
6715 | if (use_integrity) { | |
6716 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6717 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6718 | msg.rpc_cred = cred; | |
a5250def | 6719 | } |
5a5ea0d4 BS |
6720 | |
6721 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6722 | |
6723 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6724 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6725 | ||
a5250def WAA |
6726 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6727 | &res.seq_res, 0); | |
5a5ea0d4 | 6728 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6729 | |
7cb852df WAA |
6730 | if (cred) |
6731 | put_rpccred(cred); | |
a5250def | 6732 | |
5a5ea0d4 BS |
6733 | return status; |
6734 | } | |
6735 | ||
72de53ec BS |
6736 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6737 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6738 | { |
6739 | struct nfs4_exception exception = { }; | |
6740 | int err; | |
6741 | do { | |
a5250def WAA |
6742 | err = -NFS4ERR_WRONGSEC; |
6743 | ||
6744 | /* try to use integrity protection with machine cred */ | |
6745 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6746 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6747 | ||
6748 | /* | |
6749 | * if unable to use integrity protection, or SECINFO with | |
6750 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6751 | * disallowed by spec, but exists in deployed servers) use | |
6752 | * the current filesystem's rpc_client and the user cred. | |
6753 | */ | |
6754 | if (err == -NFS4ERR_WRONGSEC) | |
6755 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6756 | ||
078ea3df TM |
6757 | trace_nfs4_secinfo(dir, name, err); |
6758 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6759 | &exception); |
6760 | } while (exception.retry); | |
6761 | return err; | |
6762 | } | |
6763 | ||
557134a3 | 6764 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6765 | /* |
6766 | * Check the exchange flags returned by the server for invalid flags, having | |
6767 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6768 | * DS flags set. | |
6769 | */ | |
6770 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6771 | { | |
6772 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6773 | goto out_inval; | |
6774 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6775 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6776 | goto out_inval; | |
6777 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6778 | goto out_inval; | |
6779 | return NFS_OK; | |
6780 | out_inval: | |
6781 | return -NFS4ERR_INVAL; | |
6782 | } | |
6783 | ||
78fe0f41 | 6784 | static bool |
79d4e1f0 CL |
6785 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6786 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6787 | { |
6788 | if (a->server_scope_sz == b->server_scope_sz && | |
6789 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6790 | return true; | |
6791 | ||
6792 | return false; | |
6793 | } | |
6794 | ||
7c44f1ae WAA |
6795 | /* |
6796 | * nfs4_proc_bind_conn_to_session() | |
6797 | * | |
6798 | * The 4.1 client currently uses the same TCP connection for the | |
6799 | * fore and backchannel. | |
6800 | */ | |
2cf047c9 | 6801 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6802 | { |
6803 | int status; | |
71a097c6 TM |
6804 | struct nfs41_bind_conn_to_session_args args = { |
6805 | .client = clp, | |
6806 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6807 | }; | |
7c44f1ae WAA |
6808 | struct nfs41_bind_conn_to_session_res res; |
6809 | struct rpc_message msg = { | |
6810 | .rpc_proc = | |
6811 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6812 | .rpc_argp = &args, |
7c44f1ae | 6813 | .rpc_resp = &res, |
2cf047c9 | 6814 | .rpc_cred = cred, |
7c44f1ae WAA |
6815 | }; |
6816 | ||
6817 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6818 | |
71a097c6 TM |
6819 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6820 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6821 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae WAA |
6822 | |
6823 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6824 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6825 | if (status == 0) { |
71a097c6 | 6826 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6827 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6828 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6829 | status = -EIO; | |
71a097c6 | 6830 | goto out; |
7c44f1ae | 6831 | } |
71a097c6 | 6832 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6833 | dprintk("NFS: %s: Unexpected direction from server\n", |
6834 | __func__); | |
6835 | status = -EIO; | |
71a097c6 | 6836 | goto out; |
7c44f1ae | 6837 | } |
71a097c6 | 6838 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6839 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6840 | __func__); | |
6841 | status = -EIO; | |
71a097c6 | 6842 | goto out; |
7c44f1ae WAA |
6843 | } |
6844 | } | |
7c44f1ae WAA |
6845 | out: |
6846 | dprintk("<-- %s status= %d\n", __func__, status); | |
6847 | return status; | |
6848 | } | |
6849 | ||
99fe60d0 | 6850 | /* |
fa940720 WAA |
6851 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6852 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6853 | */ |
6854 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6855 | .how = SP4_MACH_CRED, | |
6856 | .enforce.u.words = { | |
6857 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6858 | 1 << (OP_EXCHANGE_ID - 32) | | |
6859 | 1 << (OP_CREATE_SESSION - 32) | | |
6860 | 1 << (OP_DESTROY_SESSION - 32) | | |
6861 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6862 | }, |
6863 | .allow.u.words = { | |
6864 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6865 | 1 << (OP_LOCKU) | |
6866 | 1 << (OP_COMMIT), | |
8b5bee2e | 6867 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6868 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6869 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6870 | 1 << (OP_FREE_STATEID - 32) | |
6871 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6872 | } |
6873 | }; | |
6874 | ||
6875 | /* | |
6876 | * Select the state protection mode for client `clp' given the server results | |
6877 | * from exchange_id in `sp'. | |
99fe60d0 | 6878 | * |
2031cd1a WAA |
6879 | * Returns 0 on success, negative errno otherwise. |
6880 | */ | |
6881 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6882 | struct nfs41_state_protection *sp) | |
6883 | { | |
6884 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6885 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6886 | 1 << (OP_EXCHANGE_ID - 32) | | |
6887 | 1 << (OP_CREATE_SESSION - 32) | | |
6888 | 1 << (OP_DESTROY_SESSION - 32) | | |
6889 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6890 | }; | |
6891 | unsigned int i; | |
6892 | ||
6893 | if (sp->how == SP4_MACH_CRED) { | |
6894 | /* Print state protect result */ | |
6895 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6896 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6897 | if (test_bit(i, sp->enforce.u.longs)) | |
6898 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6899 | if (test_bit(i, sp->allow.u.longs)) | |
6900 | dfprintk(MOUNT, " allow op %d\n", i); | |
6901 | } | |
6902 | ||
6903 | /* make sure nothing is on enforce list that isn't supported */ | |
6904 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6905 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6906 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6907 | return -EINVAL; | |
6908 | } | |
6909 | } | |
6910 | ||
6911 | /* | |
6912 | * Minimal mode - state operations are allowed to use machine | |
6913 | * credential. Note this already happens by default, so the | |
6914 | * client doesn't have to do anything more than the negotiation. | |
6915 | * | |
6916 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6917 | * we're already using the machine cred for exchange_id | |
6918 | * and will never use a different cred. | |
6919 | */ | |
6920 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6921 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6922 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6923 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6924 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6925 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6926 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6927 | } else { | |
6928 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6929 | return -EINVAL; | |
6930 | } | |
fa940720 WAA |
6931 | |
6932 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6933 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6934 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6935 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6936 | } | |
8b5bee2e WAA |
6937 | |
6938 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6939 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6940 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6941 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6942 | } | |
3787d506 WAA |
6943 | |
6944 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6945 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6946 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6947 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6948 | } | |
8c21c62c WAA |
6949 | |
6950 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6951 | dfprintk(MOUNT, " write mode enabled\n"); | |
6952 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6953 | } | |
6954 | ||
6955 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6956 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6957 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6958 | } | |
2031cd1a WAA |
6959 | } |
6960 | ||
6961 | return 0; | |
6962 | } | |
6963 | ||
6964 | /* | |
6965 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6966 | * |
2031cd1a | 6967 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6968 | */ |
2031cd1a WAA |
6969 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6970 | u32 sp4_how) | |
99fe60d0 BH |
6971 | { |
6972 | nfs4_verifier verifier; | |
6973 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6974 | .verifier = &verifier, |
99fe60d0 | 6975 | .client = clp, |
cd3fadec | 6976 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6977 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6978 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6979 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6980 | #else | |
6981 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6982 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6983 | #endif | |
99fe60d0 BH |
6984 | }; |
6985 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6986 | 0 |
99fe60d0 BH |
6987 | }; |
6988 | int status; | |
6989 | struct rpc_message msg = { | |
6990 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6991 | .rpc_argp = &args, | |
6992 | .rpc_resp = &res, | |
6993 | .rpc_cred = cred, | |
6994 | }; | |
99fe60d0 | 6995 | |
f092075d | 6996 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
6997 | |
6998 | status = nfs4_init_uniform_client_string(clp); | |
6999 | if (status) | |
3a6bb738 | 7000 | goto out; |
3a6bb738 JL |
7001 | |
7002 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 7003 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 7004 | clp->cl_owner_id); |
99fe60d0 | 7005 | |
acdeb69d | 7006 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 7007 | GFP_NOFS); |
acdeb69d | 7008 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
7009 | status = -ENOMEM; |
7010 | goto out; | |
7011 | } | |
78fe0f41 | 7012 | |
79d4e1f0 | 7013 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 7014 | GFP_NOFS); |
177313f1 | 7015 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 7016 | status = -ENOMEM; |
acdeb69d | 7017 | goto out_server_owner; |
abe9a6d5 | 7018 | } |
78fe0f41 | 7019 | |
bbafffd2 | 7020 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 7021 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
7022 | status = -ENOMEM; |
7023 | goto out_server_scope; | |
7024 | } | |
7025 | ||
2031cd1a WAA |
7026 | switch (sp4_how) { |
7027 | case SP4_NONE: | |
7028 | args.state_protect.how = SP4_NONE; | |
7029 | break; | |
7030 | ||
7031 | case SP4_MACH_CRED: | |
7032 | args.state_protect = nfs4_sp4_mach_cred_request; | |
7033 | break; | |
7034 | ||
7035 | default: | |
7036 | /* unsupported! */ | |
7037 | WARN_ON_ONCE(1); | |
7038 | status = -EINVAL; | |
6b55970b | 7039 | goto out_impl_id; |
2031cd1a WAA |
7040 | } |
7041 | ||
1bd714f2 | 7042 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7043 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 7044 | if (status == 0) |
32b01310 | 7045 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 7046 | |
2031cd1a WAA |
7047 | if (status == 0) |
7048 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
7049 | ||
acdeb69d | 7050 | if (status == 0) { |
32b01310 | 7051 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
7052 | clp->cl_exchange_flags = res.flags; |
7053 | /* Client ID is not confirmed */ | |
7054 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7055 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7056 | &clp->cl_session->session_state); | |
32b01310 | 7057 | clp->cl_seqid = res.seqid; |
e11259f9 | 7058 | } |
32b01310 | 7059 | |
acdeb69d CL |
7060 | kfree(clp->cl_serverowner); |
7061 | clp->cl_serverowner = res.server_owner; | |
7062 | res.server_owner = NULL; | |
78fe0f41 | 7063 | |
7d2ed9ac | 7064 | /* use the most recent implementation id */ |
59155546 CL |
7065 | kfree(clp->cl_implid); |
7066 | clp->cl_implid = res.impl_id; | |
6b55970b | 7067 | res.impl_id = NULL; |
7d2ed9ac | 7068 | |
177313f1 | 7069 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7070 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7071 | res.server_scope)) { |
7072 | dprintk("%s: server_scope mismatch detected\n", | |
7073 | __func__); | |
7074 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7075 | kfree(clp->cl_serverscope); |
7076 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7077 | } |
7078 | ||
177313f1 | 7079 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7080 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7081 | res.server_scope = NULL; |
abe9a6d5 | 7082 | } |
6b55970b | 7083 | } |
7d2ed9ac | 7084 | |
6b55970b KM |
7085 | out_impl_id: |
7086 | kfree(res.impl_id); | |
7d2ed9ac | 7087 | out_server_scope: |
abe9a6d5 | 7088 | kfree(res.server_scope); |
6b55970b KM |
7089 | out_server_owner: |
7090 | kfree(res.server_owner); | |
abe9a6d5 | 7091 | out: |
177313f1 | 7092 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7093 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7094 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7095 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7096 | clp->cl_implid->date.seconds, |
7097 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7098 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7099 | return status; |
7100 | } | |
7101 | ||
2031cd1a WAA |
7102 | /* |
7103 | * nfs4_proc_exchange_id() | |
7104 | * | |
7105 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7106 | * | |
7107 | * Since the clientid has expired, all compounds using sessions | |
7108 | * associated with the stale clientid will be returning | |
7109 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7110 | * be in some phase of session reset. | |
7111 | * | |
7112 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7113 | */ | |
7114 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7115 | { | |
7116 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7117 | int status; | |
7118 | ||
7119 | /* try SP4_MACH_CRED if krb5i/p */ | |
7120 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7121 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7122 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7123 | if (!status) | |
7124 | return 0; | |
7125 | } | |
7126 | ||
7127 | /* try SP4_NONE */ | |
7128 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7129 | } | |
7130 | ||
66245539 TM |
7131 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7132 | struct rpc_cred *cred) | |
7133 | { | |
7134 | struct rpc_message msg = { | |
7135 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7136 | .rpc_argp = clp, | |
7137 | .rpc_cred = cred, | |
7138 | }; | |
7139 | int status; | |
7140 | ||
7141 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7142 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7143 | if (status) |
02c67525 | 7144 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7145 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7146 | return status; | |
7147 | } | |
7148 | ||
7149 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7150 | struct rpc_cred *cred) | |
7151 | { | |
7152 | unsigned int loop; | |
7153 | int ret; | |
7154 | ||
7155 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7156 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7157 | switch (ret) { | |
7158 | case -NFS4ERR_DELAY: | |
7159 | case -NFS4ERR_CLIENTID_BUSY: | |
7160 | ssleep(1); | |
7161 | break; | |
7162 | default: | |
7163 | return ret; | |
7164 | } | |
7165 | } | |
7166 | return 0; | |
7167 | } | |
7168 | ||
7169 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7170 | { | |
7171 | struct rpc_cred *cred; | |
7172 | int ret = 0; | |
7173 | ||
7174 | if (clp->cl_mvops->minor_version < 1) | |
7175 | goto out; | |
7176 | if (clp->cl_exchange_flags == 0) | |
7177 | goto out; | |
05f4c350 CL |
7178 | if (clp->cl_preserve_clid) |
7179 | goto out; | |
73d8bde5 | 7180 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7181 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7182 | if (cred) | |
7183 | put_rpccred(cred); | |
7184 | switch (ret) { | |
7185 | case 0: | |
7186 | case -NFS4ERR_STALE_CLIENTID: | |
7187 | clp->cl_exchange_flags = 0; | |
7188 | } | |
7189 | out: | |
7190 | return ret; | |
7191 | } | |
7192 | ||
2050f0cc AA |
7193 | struct nfs4_get_lease_time_data { |
7194 | struct nfs4_get_lease_time_args *args; | |
7195 | struct nfs4_get_lease_time_res *res; | |
7196 | struct nfs_client *clp; | |
7197 | }; | |
7198 | ||
7199 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7200 | void *calldata) | |
7201 | { | |
2050f0cc AA |
7202 | struct nfs4_get_lease_time_data *data = |
7203 | (struct nfs4_get_lease_time_data *)calldata; | |
7204 | ||
7205 | dprintk("--> %s\n", __func__); | |
7206 | /* just setup sequence, do not trigger session recovery | |
7207 | since we're invoked within one */ | |
d9afbd1b TM |
7208 | nfs41_setup_sequence(data->clp->cl_session, |
7209 | &data->args->la_seq_args, | |
7210 | &data->res->lr_seq_res, | |
7211 | task); | |
2050f0cc AA |
7212 | dprintk("<-- %s\n", __func__); |
7213 | } | |
7214 | ||
7215 | /* | |
7216 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7217 | * from sequence operation or clientid errors. | |
7218 | */ | |
7219 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7220 | { | |
7221 | struct nfs4_get_lease_time_data *data = | |
7222 | (struct nfs4_get_lease_time_data *)calldata; | |
7223 | ||
7224 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7225 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7226 | return; | |
2050f0cc AA |
7227 | switch (task->tk_status) { |
7228 | case -NFS4ERR_DELAY: | |
7229 | case -NFS4ERR_GRACE: | |
7230 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7231 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7232 | task->tk_status = 0; | |
a8a4ae3a AA |
7233 | /* fall through */ |
7234 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7235 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7236 | return; |
7237 | } | |
2050f0cc AA |
7238 | dprintk("<-- %s\n", __func__); |
7239 | } | |
7240 | ||
17280175 | 7241 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7242 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7243 | .rpc_call_done = nfs4_get_lease_time_done, | |
7244 | }; | |
7245 | ||
7246 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7247 | { | |
7248 | struct rpc_task *task; | |
7249 | struct nfs4_get_lease_time_args args; | |
7250 | struct nfs4_get_lease_time_res res = { | |
7251 | .lr_fsinfo = fsinfo, | |
7252 | }; | |
7253 | struct nfs4_get_lease_time_data data = { | |
7254 | .args = &args, | |
7255 | .res = &res, | |
7256 | .clp = clp, | |
7257 | }; | |
7258 | struct rpc_message msg = { | |
7259 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7260 | .rpc_argp = &args, | |
7261 | .rpc_resp = &res, | |
7262 | }; | |
7263 | struct rpc_task_setup task_setup = { | |
7264 | .rpc_client = clp->cl_rpcclient, | |
7265 | .rpc_message = &msg, | |
7266 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7267 | .callback_data = &data, |
7268 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7269 | }; |
7270 | int status; | |
7271 | ||
a9c92d6b | 7272 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7273 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7274 | dprintk("--> %s\n", __func__); |
7275 | task = rpc_run_task(&task_setup); | |
7276 | ||
7277 | if (IS_ERR(task)) | |
7278 | status = PTR_ERR(task); | |
7279 | else { | |
7280 | status = task->tk_status; | |
7281 | rpc_put_task(task); | |
7282 | } | |
7283 | dprintk("<-- %s return %d\n", __func__, status); | |
7284 | ||
7285 | return status; | |
7286 | } | |
7287 | ||
fc931582 AA |
7288 | /* |
7289 | * Initialize the values to be used by the client in CREATE_SESSION | |
7290 | * If nfs4_init_session set the fore channel request and response sizes, | |
7291 | * use them. | |
7292 | * | |
7293 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7294 | * always set csa_cachethis to FALSE because the current implementation | |
7295 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7296 | */ | |
7297 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7298 | { | |
18aad3d5 AA |
7299 | unsigned int max_rqst_sz, max_resp_sz; |
7300 | ||
7301 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7302 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7303 | |
fc931582 | 7304 | /* Fore channel attributes */ |
18aad3d5 AA |
7305 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7306 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7307 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7308 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7309 | |
7310 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7311 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7312 | __func__, |
7313 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7314 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7315 | |
7316 | /* Back channel attributes */ | |
fc931582 AA |
7317 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7318 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7319 | args->bc_attrs.max_resp_sz_cached = 0; | |
7320 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
7321 | args->bc_attrs.max_reqs = 1; | |
7322 | ||
7323 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7324 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7325 | __func__, | |
7326 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7327 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7328 | args->bc_attrs.max_reqs); | |
7329 | } | |
7330 | ||
79969dd1 TM |
7331 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7332 | struct nfs41_create_session_res *res) | |
8d35301d | 7333 | { |
43c2e885 | 7334 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7335 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7336 | |
43c2e885 BF |
7337 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7338 | return -EINVAL; | |
7339 | /* | |
7340 | * Our requested max_ops is the minimum we need; we're not | |
7341 | * prepared to break up compounds into smaller pieces than that. | |
7342 | * So, no point even trying to continue if the server won't | |
7343 | * cooperate: | |
7344 | */ | |
7345 | if (rcvd->max_ops < sent->max_ops) | |
7346 | return -EINVAL; | |
7347 | if (rcvd->max_reqs == 0) | |
7348 | return -EINVAL; | |
b4b9a0c1 VG |
7349 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7350 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7351 | return 0; |
8d35301d AA |
7352 | } |
7353 | ||
79969dd1 TM |
7354 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7355 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7356 | { |
7357 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7358 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7359 | |
b1c0df5f TM |
7360 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7361 | goto out; | |
43c2e885 BF |
7362 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7363 | return -EINVAL; | |
7364 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7365 | return -EINVAL; | |
7366 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7367 | return -EINVAL; | |
7368 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7369 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7370 | return -EINVAL; |
b4b9a0c1 | 7371 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7372 | return -EINVAL; |
b1c0df5f | 7373 | out: |
43c2e885 BF |
7374 | return 0; |
7375 | } | |
8d35301d | 7376 | |
8d35301d | 7377 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7378 | struct nfs41_create_session_res *res) |
8d35301d | 7379 | { |
43c2e885 | 7380 | int ret; |
8d35301d | 7381 | |
79969dd1 | 7382 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7383 | if (ret) |
7384 | return ret; | |
79969dd1 TM |
7385 | return nfs4_verify_back_channel_attrs(args, res); |
7386 | } | |
7387 | ||
7388 | static void nfs4_update_session(struct nfs4_session *session, | |
7389 | struct nfs41_create_session_res *res) | |
7390 | { | |
7391 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7392 | /* Mark client id and session as being confirmed */ |
7393 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7394 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7395 | session->flags = res->flags; |
7396 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7397 | if (res->flags & SESSION4_BACK_CHAN) |
7398 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7399 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7400 | } |
7401 | ||
848f5bda TM |
7402 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7403 | struct rpc_cred *cred) | |
fc931582 AA |
7404 | { |
7405 | struct nfs4_session *session = clp->cl_session; | |
7406 | struct nfs41_create_session_args args = { | |
7407 | .client = clp, | |
79969dd1 TM |
7408 | .clientid = clp->cl_clientid, |
7409 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7410 | .cb_program = NFS4_CALLBACK, |
7411 | }; | |
79969dd1 TM |
7412 | struct nfs41_create_session_res res; |
7413 | ||
fc931582 AA |
7414 | struct rpc_message msg = { |
7415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7416 | .rpc_argp = &args, | |
7417 | .rpc_resp = &res, | |
848f5bda | 7418 | .rpc_cred = cred, |
fc931582 AA |
7419 | }; |
7420 | int status; | |
7421 | ||
7422 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7423 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7424 | |
1bd714f2 | 7425 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7426 | trace_nfs4_create_session(clp, status); |
fc931582 | 7427 | |
43095d39 | 7428 | if (!status) { |
8d35301d | 7429 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7430 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7431 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7432 | if (clp->cl_seqid == res.seqid) |
7433 | clp->cl_seqid++; | |
7434 | if (status) | |
7435 | goto out; | |
7436 | nfs4_update_session(session, &res); | |
fc931582 | 7437 | } |
79969dd1 | 7438 | out: |
fc931582 AA |
7439 | return status; |
7440 | } | |
7441 | ||
7442 | /* | |
7443 | * Issues a CREATE_SESSION operation to the server. | |
7444 | * It is the responsibility of the caller to verify the session is | |
7445 | * expired before calling this routine. | |
7446 | */ | |
848f5bda | 7447 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7448 | { |
7449 | int status; | |
7450 | unsigned *ptr; | |
fc931582 AA |
7451 | struct nfs4_session *session = clp->cl_session; |
7452 | ||
7453 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7454 | ||
848f5bda | 7455 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7456 | if (status) |
7457 | goto out; | |
7458 | ||
aacd5537 AA |
7459 | /* Init or reset the session slot tables */ |
7460 | status = nfs4_setup_session_slot_tables(session); | |
7461 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7462 | if (status) |
7463 | goto out; | |
7464 | ||
7465 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7466 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7467 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7468 | out: |
7469 | dprintk("<-- %s\n", __func__); | |
7470 | return status; | |
7471 | } | |
7472 | ||
0f3e66c6 AA |
7473 | /* |
7474 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7475 | * The caller must serialize access to this routine. | |
7476 | */ | |
848f5bda TM |
7477 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7478 | struct rpc_cred *cred) | |
0f3e66c6 | 7479 | { |
848f5bda TM |
7480 | struct rpc_message msg = { |
7481 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7482 | .rpc_argp = session, | |
7483 | .rpc_cred = cred, | |
7484 | }; | |
0f3e66c6 | 7485 | int status = 0; |
0f3e66c6 AA |
7486 | |
7487 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7488 | ||
7489 | /* session is still being setup */ | |
e11259f9 TM |
7490 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7491 | return 0; | |
0f3e66c6 | 7492 | |
1bd714f2 | 7493 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7494 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7495 | |
7496 | if (status) | |
08106ac7 | 7497 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7498 | "Session has been destroyed regardless...\n", status); |
7499 | ||
7500 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7501 | return status; | |
7502 | } | |
7503 | ||
fc01cea9 AA |
7504 | /* |
7505 | * Renew the cl_session lease. | |
7506 | */ | |
d5f8d3fe TM |
7507 | struct nfs4_sequence_data { |
7508 | struct nfs_client *clp; | |
7509 | struct nfs4_sequence_args args; | |
7510 | struct nfs4_sequence_res res; | |
7511 | }; | |
7512 | ||
dc96aef9 AB |
7513 | static void nfs41_sequence_release(void *data) |
7514 | { | |
d5f8d3fe TM |
7515 | struct nfs4_sequence_data *calldata = data; |
7516 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7517 | |
7135840f AB |
7518 | if (atomic_read(&clp->cl_count) > 1) |
7519 | nfs4_schedule_state_renewal(clp); | |
7520 | nfs_put_client(clp); | |
d5f8d3fe | 7521 | kfree(calldata); |
dc96aef9 AB |
7522 | } |
7523 | ||
aa5190d0 TM |
7524 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7525 | { | |
7526 | switch(task->tk_status) { | |
7527 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7528 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7529 | return -EAGAIN; | |
7530 | default: | |
0400a6b0 | 7531 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7532 | } |
7533 | return 0; | |
7534 | } | |
7535 | ||
dc96aef9 | 7536 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7537 | { |
d5f8d3fe TM |
7538 | struct nfs4_sequence_data *calldata = data; |
7539 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7540 | |
14516c3a TM |
7541 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7542 | return; | |
fc01cea9 | 7543 | |
c6d01c6f | 7544 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7545 | if (task->tk_status < 0) { |
7546 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7547 | if (atomic_read(&clp->cl_count) == 1) |
7548 | goto out; | |
fc01cea9 | 7549 | |
aa5190d0 TM |
7550 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7551 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7552 | return; |
7553 | } | |
7554 | } | |
fc01cea9 | 7555 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7556 | out: |
fc01cea9 AA |
7557 | dprintk("<-- %s\n", __func__); |
7558 | } | |
7559 | ||
7560 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7561 | { | |
d5f8d3fe TM |
7562 | struct nfs4_sequence_data *calldata = data; |
7563 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7564 | struct nfs4_sequence_args *args; |
7565 | struct nfs4_sequence_res *res; | |
7566 | ||
fc01cea9 AA |
7567 | args = task->tk_msg.rpc_argp; |
7568 | res = task->tk_msg.rpc_resp; | |
7569 | ||
d9afbd1b | 7570 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7571 | } |
7572 | ||
7573 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7574 | .rpc_call_done = nfs41_sequence_call_done, | |
7575 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7576 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7577 | }; |
7578 | ||
8fe72bac TM |
7579 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7580 | struct rpc_cred *cred, | |
7581 | bool is_privileged) | |
fc01cea9 | 7582 | { |
d5f8d3fe | 7583 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7584 | struct rpc_message msg = { |
7585 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7586 | .rpc_cred = cred, | |
7587 | }; | |
71ac6da9 TM |
7588 | struct rpc_task_setup task_setup_data = { |
7589 | .rpc_client = clp->cl_rpcclient, | |
7590 | .rpc_message = &msg, | |
8fe72bac | 7591 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7592 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7593 | }; |
fc01cea9 | 7594 | |
7135840f | 7595 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7596 | return ERR_PTR(-EIO); |
dfb4f309 | 7597 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7598 | if (calldata == NULL) { |
7135840f | 7599 | nfs_put_client(clp); |
71ac6da9 | 7600 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7601 | } |
a9c92d6b | 7602 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7603 | if (is_privileged) |
7604 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7605 | msg.rpc_argp = &calldata->args; |
7606 | msg.rpc_resp = &calldata->res; | |
7607 | calldata->clp = clp; | |
71ac6da9 | 7608 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7609 | |
71ac6da9 TM |
7610 | return rpc_run_task(&task_setup_data); |
7611 | } | |
7612 | ||
2f60ea6b | 7613 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7614 | { |
7615 | struct rpc_task *task; | |
7616 | int ret = 0; | |
7617 | ||
2f60ea6b | 7618 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7619 | return -EAGAIN; |
8fe72bac | 7620 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7621 | if (IS_ERR(task)) |
7622 | ret = PTR_ERR(task); | |
7623 | else | |
bf294b41 | 7624 | rpc_put_task_async(task); |
71ac6da9 TM |
7625 | dprintk("<-- %s status=%d\n", __func__, ret); |
7626 | return ret; | |
7627 | } | |
7628 | ||
7629 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7630 | { | |
7631 | struct rpc_task *task; | |
7632 | int ret; | |
7633 | ||
8fe72bac | 7634 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7635 | if (IS_ERR(task)) { |
7636 | ret = PTR_ERR(task); | |
7637 | goto out; | |
7638 | } | |
7639 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7640 | if (!ret) |
71ac6da9 TM |
7641 | ret = task->tk_status; |
7642 | rpc_put_task(task); | |
7643 | out: | |
7644 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7645 | return ret; | |
fc01cea9 AA |
7646 | } |
7647 | ||
fce5c838 RL |
7648 | struct nfs4_reclaim_complete_data { |
7649 | struct nfs_client *clp; | |
7650 | struct nfs41_reclaim_complete_args arg; | |
7651 | struct nfs41_reclaim_complete_res res; | |
7652 | }; | |
7653 | ||
7654 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7655 | { | |
7656 | struct nfs4_reclaim_complete_data *calldata = data; | |
7657 | ||
d9afbd1b TM |
7658 | nfs41_setup_sequence(calldata->clp->cl_session, |
7659 | &calldata->arg.seq_args, | |
7660 | &calldata->res.seq_res, | |
7661 | task); | |
fce5c838 RL |
7662 | } |
7663 | ||
aa5190d0 TM |
7664 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7665 | { | |
7666 | switch(task->tk_status) { | |
7667 | case 0: | |
7668 | case -NFS4ERR_COMPLETE_ALREADY: | |
7669 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7670 | break; | |
7671 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7672 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7673 | /* fall through */ |
7674 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7675 | return -EAGAIN; |
7676 | default: | |
0400a6b0 | 7677 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7678 | } |
7679 | return 0; | |
7680 | } | |
7681 | ||
fce5c838 RL |
7682 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7683 | { | |
7684 | struct nfs4_reclaim_complete_data *calldata = data; | |
7685 | struct nfs_client *clp = calldata->clp; | |
7686 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7687 | ||
7688 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7689 | if (!nfs41_sequence_done(task, res)) |
7690 | return; | |
fce5c838 | 7691 | |
c6d01c6f | 7692 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7693 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7694 | rpc_restart_call_prepare(task); | |
7695 | return; | |
7696 | } | |
fce5c838 RL |
7697 | dprintk("<-- %s\n", __func__); |
7698 | } | |
7699 | ||
7700 | static void nfs4_free_reclaim_complete_data(void *data) | |
7701 | { | |
7702 | struct nfs4_reclaim_complete_data *calldata = data; | |
7703 | ||
7704 | kfree(calldata); | |
7705 | } | |
7706 | ||
7707 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7708 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7709 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7710 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7711 | }; | |
7712 | ||
7713 | /* | |
7714 | * Issue a global reclaim complete. | |
7715 | */ | |
965e9c23 TM |
7716 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7717 | struct rpc_cred *cred) | |
fce5c838 RL |
7718 | { |
7719 | struct nfs4_reclaim_complete_data *calldata; | |
7720 | struct rpc_task *task; | |
7721 | struct rpc_message msg = { | |
7722 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7723 | .rpc_cred = cred, |
fce5c838 RL |
7724 | }; |
7725 | struct rpc_task_setup task_setup_data = { | |
7726 | .rpc_client = clp->cl_rpcclient, | |
7727 | .rpc_message = &msg, | |
7728 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7729 | .flags = RPC_TASK_ASYNC, | |
7730 | }; | |
7731 | int status = -ENOMEM; | |
7732 | ||
7733 | dprintk("--> %s\n", __func__); | |
8535b2be | 7734 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7735 | if (calldata == NULL) |
7736 | goto out; | |
7737 | calldata->clp = clp; | |
7738 | calldata->arg.one_fs = 0; | |
fce5c838 | 7739 | |
a9c92d6b | 7740 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7741 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7742 | msg.rpc_argp = &calldata->arg; |
7743 | msg.rpc_resp = &calldata->res; | |
7744 | task_setup_data.callback_data = calldata; | |
7745 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7746 | if (IS_ERR(task)) { |
fce5c838 | 7747 | status = PTR_ERR(task); |
acf82b85 DC |
7748 | goto out; |
7749 | } | |
c34c32ea AA |
7750 | status = nfs4_wait_for_completion_rpc_task(task); |
7751 | if (status == 0) | |
7752 | status = task->tk_status; | |
fce5c838 | 7753 | rpc_put_task(task); |
acf82b85 | 7754 | return 0; |
fce5c838 RL |
7755 | out: |
7756 | dprintk("<-- %s status=%d\n", __func__, status); | |
7757 | return status; | |
7758 | } | |
b1f69b75 AA |
7759 | |
7760 | static void | |
7761 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7762 | { | |
7763 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7764 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7765 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7766 | |
7767 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7768 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7769 | * right now covering the LAYOUTGET we are about to send. | |
7770 | * However, that is not so catastrophic, and there seems | |
7771 | * to be no way to prevent it completely. | |
7772 | */ | |
6ba7db34 | 7773 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7774 | &lgp->res.seq_res, task)) |
b1f69b75 | 7775 | return; |
cf7d63f1 FI |
7776 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7777 | NFS_I(lgp->args.inode)->layout, | |
ce6ab4f2 | 7778 | &lgp->args.range, |
cf7d63f1 FI |
7779 | lgp->args.ctx->state)) { |
7780 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7781 | } |
b1f69b75 AA |
7782 | } |
7783 | ||
7784 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7785 | { | |
7786 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7787 | struct inode *inode = lgp->args.inode; |
7788 | struct nfs_server *server = NFS_SERVER(inode); | |
7789 | struct pnfs_layout_hdr *lo; | |
7790 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7791 | unsigned long timeo, now, giveup; |
b1f69b75 | 7792 | |
ed7e5423 | 7793 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7794 | |
6ba7db34 | 7795 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7796 | goto out; |
b1f69b75 AA |
7797 | |
7798 | switch (task->tk_status) { | |
7799 | case 0: | |
ee314c2a | 7800 | goto out; |
21b874c8 TM |
7801 | /* |
7802 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
7803 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
7804 | */ | |
7805 | case -NFS4ERR_BADLAYOUT: | |
7806 | goto out_overflow; | |
ed7e5423 BH |
7807 | /* |
7808 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
7809 | * (or clients) writing to the same RAID stripe except when |
7810 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
ed7e5423 | 7811 | */ |
b1f69b75 | 7812 | case -NFS4ERR_LAYOUTTRYLATER: |
21b874c8 TM |
7813 | if (lgp->args.minlength == 0) |
7814 | goto out_overflow; | |
ed7e5423 BH |
7815 | /* |
7816 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7817 | * existing layout before getting a new one). | |
7818 | */ | |
b1f69b75 | 7819 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7820 | timeo = rpc_get_timeout(task->tk_client); |
7821 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7822 | now = jiffies; |
7823 | if (time_after(giveup, now)) { | |
7824 | unsigned long delay; | |
7825 | ||
7826 | /* Delay for: | |
7827 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7828 | * - One last time a jiffie before we give up | |
7829 | * - exponential backoff (time_now minus start_attempt) | |
7830 | */ | |
7831 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7832 | min((giveup - now - 1), | |
7833 | now - lgp->args.timestamp)); | |
7834 | ||
7835 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7836 | __func__, delay); | |
7837 | rpc_delay(task, delay); | |
2259f960 TM |
7838 | /* Do not call nfs4_async_handle_error() */ |
7839 | goto out_restart; | |
ed7e5423 | 7840 | } |
ee314c2a TM |
7841 | break; |
7842 | case -NFS4ERR_EXPIRED: | |
7843 | case -NFS4ERR_BAD_STATEID: | |
7844 | spin_lock(&inode->i_lock); | |
2259f960 TM |
7845 | if (nfs4_stateid_match(&lgp->args.stateid, |
7846 | &lgp->args.ctx->state->stateid)) { | |
ee314c2a TM |
7847 | spin_unlock(&inode->i_lock); |
7848 | /* If the open stateid was bad, then recover it. */ | |
7849 | state = lgp->args.ctx->state; | |
2259f960 TM |
7850 | break; |
7851 | } | |
7852 | lo = NFS_I(inode)->layout; | |
7853 | if (lo && nfs4_stateid_match(&lgp->args.stateid, | |
7854 | &lo->plh_stateid)) { | |
ee314c2a TM |
7855 | LIST_HEAD(head); |
7856 | ||
defb8460 CH |
7857 | /* |
7858 | * Mark the bad layout state as invalid, then retry | |
7859 | * with the current stateid. | |
7860 | */ | |
8714d46d | 7861 | set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); |
ee314c2a TM |
7862 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7863 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7864 | pnfs_free_lseg_list(&head); |
2259f960 TM |
7865 | } else |
7866 | spin_unlock(&inode->i_lock); | |
7867 | goto out_restart; | |
b1f69b75 | 7868 | } |
91ab4b4d | 7869 | if (nfs4_async_handle_error(task, server, state, &lgp->timeout) == -EAGAIN) |
2259f960 | 7870 | goto out_restart; |
ee314c2a | 7871 | out: |
b1f69b75 | 7872 | dprintk("<-- %s\n", __func__); |
21b874c8 | 7873 | return; |
2259f960 TM |
7874 | out_restart: |
7875 | task->tk_status = 0; | |
7876 | rpc_restart_call_prepare(task); | |
7877 | return; | |
21b874c8 TM |
7878 | out_overflow: |
7879 | task->tk_status = -EOVERFLOW; | |
7880 | goto out; | |
b1f69b75 AA |
7881 | } |
7882 | ||
8554116e IK |
7883 | static size_t max_response_pages(struct nfs_server *server) |
7884 | { | |
7885 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7886 | return nfs_page_array_len(0, max_resp_sz); | |
7887 | } | |
7888 | ||
7889 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7890 | { | |
7891 | int i; | |
7892 | ||
7893 | if (!pages) | |
7894 | return; | |
7895 | ||
7896 | for (i = 0; i < size; i++) { | |
7897 | if (!pages[i]) | |
7898 | break; | |
7899 | __free_page(pages[i]); | |
7900 | } | |
7901 | kfree(pages); | |
7902 | } | |
7903 | ||
7904 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7905 | { | |
7906 | struct page **pages; | |
7907 | int i; | |
7908 | ||
7909 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7910 | if (!pages) { | |
7911 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7912 | return NULL; | |
7913 | } | |
7914 | ||
7915 | for (i = 0; i < size; i++) { | |
7916 | pages[i] = alloc_page(gfp_flags); | |
7917 | if (!pages[i]) { | |
7918 | dprintk("%s: failed to allocate page\n", __func__); | |
7919 | nfs4_free_pages(pages, size); | |
7920 | return NULL; | |
7921 | } | |
7922 | } | |
7923 | ||
7924 | return pages; | |
7925 | } | |
7926 | ||
b1f69b75 AA |
7927 | static void nfs4_layoutget_release(void *calldata) |
7928 | { | |
7929 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7930 | struct inode *inode = lgp->args.inode; |
7931 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7932 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7933 | |
7934 | dprintk("--> %s\n", __func__); | |
8554116e | 7935 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7936 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7937 | put_nfs_open_context(lgp->args.ctx); |
7938 | kfree(calldata); | |
7939 | dprintk("<-- %s\n", __func__); | |
7940 | } | |
7941 | ||
7942 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7943 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7944 | .rpc_call_done = nfs4_layoutget_done, | |
7945 | .rpc_release = nfs4_layoutget_release, | |
7946 | }; | |
7947 | ||
a0b0a6e3 TM |
7948 | struct pnfs_layout_segment * |
7949 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7950 | { |
a47970ff WAA |
7951 | struct inode *inode = lgp->args.inode; |
7952 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7953 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7954 | struct rpc_task *task; |
7955 | struct rpc_message msg = { | |
7956 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7957 | .rpc_argp = &lgp->args, | |
7958 | .rpc_resp = &lgp->res, | |
6ab59344 | 7959 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7960 | }; |
7961 | struct rpc_task_setup task_setup_data = { | |
7962 | .rpc_client = server->client, | |
7963 | .rpc_message = &msg, | |
7964 | .callback_ops = &nfs4_layoutget_call_ops, | |
7965 | .callback_data = lgp, | |
7966 | .flags = RPC_TASK_ASYNC, | |
7967 | }; | |
a0b0a6e3 | 7968 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7969 | int status = 0; |
7970 | ||
7971 | dprintk("--> %s\n", __func__); | |
7972 | ||
4bd5a980 PT |
7973 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
7974 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7975 | ||
8554116e IK |
7976 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7977 | if (!lgp->args.layout.pages) { | |
7978 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7979 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7980 | } |
7981 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7982 | lgp->args.timestamp = jiffies; |
8554116e | 7983 | |
35124a09 | 7984 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7985 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7986 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 7987 | |
b1f69b75 AA |
7988 | task = rpc_run_task(&task_setup_data); |
7989 | if (IS_ERR(task)) | |
a0b0a6e3 | 7990 | return ERR_CAST(task); |
b1f69b75 | 7991 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7992 | if (status == 0) |
7993 | status = task->tk_status; | |
1037e6ea TM |
7994 | trace_nfs4_layoutget(lgp->args.ctx, |
7995 | &lgp->args.range, | |
7996 | &lgp->res.range, | |
7997 | status); | |
085b7a45 WAA |
7998 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7999 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 8000 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
8001 | rpc_put_task(task); |
8002 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
8003 | if (status) |
8004 | return ERR_PTR(status); | |
8005 | return lseg; | |
b1f69b75 AA |
8006 | } |
8007 | ||
cbe82603 BH |
8008 | static void |
8009 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
8010 | { | |
8011 | struct nfs4_layoutreturn *lrp = calldata; | |
8012 | ||
8013 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
8014 | nfs41_setup_sequence(lrp->clp->cl_session, |
8015 | &lrp->args.seq_args, | |
8016 | &lrp->res.seq_res, | |
8017 | task); | |
cbe82603 BH |
8018 | } |
8019 | ||
8020 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
8021 | { | |
8022 | struct nfs4_layoutreturn *lrp = calldata; | |
8023 | struct nfs_server *server; | |
8024 | ||
8025 | dprintk("--> %s\n", __func__); | |
8026 | ||
6ba7db34 | 8027 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
8028 | return; |
8029 | ||
8030 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
8031 | switch (task->tk_status) { |
8032 | default: | |
8033 | task->tk_status = 0; | |
8034 | case 0: | |
8035 | break; | |
8036 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8037 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8038 | break; |
d00c5d43 | 8039 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8040 | return; |
8041 | } | |
cbe82603 BH |
8042 | dprintk("<-- %s\n", __func__); |
8043 | } | |
8044 | ||
8045 | static void nfs4_layoutreturn_release(void *calldata) | |
8046 | { | |
8047 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8048 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8049 | LIST_HEAD(freeme); |
cbe82603 BH |
8050 | |
8051 | dprintk("--> %s\n", __func__); | |
849b286f TM |
8052 | spin_lock(&lo->plh_inode->i_lock); |
8053 | if (lrp->res.lrs_present) | |
8054 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
c5d73716 | 8055 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range); |
d67ae825 | 8056 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f TM |
8057 | lo->plh_block_lgets--; |
8058 | spin_unlock(&lo->plh_inode->i_lock); | |
c5d73716 | 8059 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8060 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8061 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8062 | kfree(calldata); |
8063 | dprintk("<-- %s\n", __func__); | |
8064 | } | |
8065 | ||
8066 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8067 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8068 | .rpc_call_done = nfs4_layoutreturn_done, | |
8069 | .rpc_release = nfs4_layoutreturn_release, | |
8070 | }; | |
8071 | ||
6c16605d | 8072 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8073 | { |
8074 | struct rpc_task *task; | |
8075 | struct rpc_message msg = { | |
8076 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8077 | .rpc_argp = &lrp->args, | |
8078 | .rpc_resp = &lrp->res, | |
9556000d | 8079 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8080 | }; |
8081 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8082 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8083 | .rpc_message = &msg, |
8084 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8085 | .callback_data = lrp, | |
8086 | }; | |
6c16605d | 8087 | int status = 0; |
cbe82603 BH |
8088 | |
8089 | dprintk("--> %s\n", __func__); | |
5a0ec8ac TM |
8090 | if (!sync) { |
8091 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8092 | if (!lrp->inode) { | |
8093 | nfs4_layoutreturn_release(lrp); | |
8094 | return -EAGAIN; | |
8095 | } | |
8096 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8097 | } | |
a9c92d6b | 8098 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8099 | task = rpc_run_task(&task_setup_data); |
8100 | if (IS_ERR(task)) | |
8101 | return PTR_ERR(task); | |
5a0ec8ac TM |
8102 | if (sync) |
8103 | status = task->tk_status; | |
1037e6ea | 8104 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
8105 | dprintk("<-- %s status=%d\n", __func__, status); |
8106 | rpc_put_task(task); | |
8107 | return status; | |
8108 | } | |
8109 | ||
b1f69b75 | 8110 | static int |
cd5875fe TM |
8111 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8112 | struct pnfs_device *pdev, | |
8113 | struct rpc_cred *cred) | |
b1f69b75 AA |
8114 | { |
8115 | struct nfs4_getdeviceinfo_args args = { | |
8116 | .pdev = pdev, | |
4e590803 TM |
8117 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8118 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8119 | }; |
8120 | struct nfs4_getdeviceinfo_res res = { | |
8121 | .pdev = pdev, | |
8122 | }; | |
8123 | struct rpc_message msg = { | |
8124 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8125 | .rpc_argp = &args, | |
8126 | .rpc_resp = &res, | |
cd5875fe | 8127 | .rpc_cred = cred, |
b1f69b75 AA |
8128 | }; |
8129 | int status; | |
8130 | ||
8131 | dprintk("--> %s\n", __func__); | |
7c513058 | 8132 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8133 | if (res.notification & ~args.notify_types) |
8134 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8135 | if (res.notification != args.notify_types) |
8136 | pdev->nocache = 1; | |
4e590803 | 8137 | |
b1f69b75 AA |
8138 | dprintk("<-- %s status=%d\n", __func__, status); |
8139 | ||
8140 | return status; | |
8141 | } | |
8142 | ||
cd5875fe TM |
8143 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8144 | struct pnfs_device *pdev, | |
8145 | struct rpc_cred *cred) | |
b1f69b75 AA |
8146 | { |
8147 | struct nfs4_exception exception = { }; | |
8148 | int err; | |
8149 | ||
8150 | do { | |
8151 | err = nfs4_handle_exception(server, | |
cd5875fe | 8152 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8153 | &exception); |
8154 | } while (exception.retry); | |
8155 | return err; | |
8156 | } | |
8157 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8158 | ||
863a3c6c AA |
8159 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8160 | { | |
8161 | struct nfs4_layoutcommit_data *data = calldata; | |
8162 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8163 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8164 | |
d9afbd1b TM |
8165 | nfs41_setup_sequence(session, |
8166 | &data->args.seq_args, | |
8167 | &data->res.seq_res, | |
8168 | task); | |
863a3c6c AA |
8169 | } |
8170 | ||
8171 | static void | |
8172 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8173 | { | |
8174 | struct nfs4_layoutcommit_data *data = calldata; | |
8175 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8176 | ||
6ba7db34 | 8177 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8178 | return; |
8179 | ||
8180 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8181 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8182 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8183 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8184 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8185 | task->tk_status = 0; |
e59d27e0 | 8186 | case 0: |
e59d27e0 TM |
8187 | break; |
8188 | default: | |
8478eaa1 | 8189 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8190 | rpc_restart_call_prepare(task); |
8191 | return; | |
8192 | } | |
8193 | } | |
863a3c6c AA |
8194 | } |
8195 | ||
8196 | static void nfs4_layoutcommit_release(void *calldata) | |
8197 | { | |
8198 | struct nfs4_layoutcommit_data *data = calldata; | |
8199 | ||
db29c089 | 8200 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8201 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8202 | data->res.fattr); | |
863a3c6c | 8203 | put_rpccred(data->cred); |
472e2594 | 8204 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8205 | kfree(data); |
8206 | } | |
8207 | ||
8208 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8209 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8210 | .rpc_call_done = nfs4_layoutcommit_done, | |
8211 | .rpc_release = nfs4_layoutcommit_release, | |
8212 | }; | |
8213 | ||
8214 | int | |
ef311537 | 8215 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8216 | { |
8217 | struct rpc_message msg = { | |
8218 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8219 | .rpc_argp = &data->args, | |
8220 | .rpc_resp = &data->res, | |
8221 | .rpc_cred = data->cred, | |
8222 | }; | |
8223 | struct rpc_task_setup task_setup_data = { | |
8224 | .task = &data->task, | |
8225 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8226 | .rpc_message = &msg, | |
8227 | .callback_ops = &nfs4_layoutcommit_ops, | |
8228 | .callback_data = data, | |
863a3c6c AA |
8229 | }; |
8230 | struct rpc_task *task; | |
8231 | int status = 0; | |
8232 | ||
b4839ebe KM |
8233 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8234 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8235 | data->args.lastbytewritten, |
8236 | data->args.inode->i_ino); | |
8237 | ||
472e2594 TM |
8238 | if (!sync) { |
8239 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8240 | if (data->inode == NULL) { | |
8241 | nfs4_layoutcommit_release(data); | |
8242 | return -EAGAIN; | |
8243 | } | |
8244 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8245 | } | |
a9c92d6b | 8246 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8247 | task = rpc_run_task(&task_setup_data); |
8248 | if (IS_ERR(task)) | |
8249 | return PTR_ERR(task); | |
472e2594 TM |
8250 | if (sync) |
8251 | status = task->tk_status; | |
1037e6ea | 8252 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
8253 | dprintk("%s: status %d\n", __func__, status); |
8254 | rpc_put_task(task); | |
8255 | return status; | |
8256 | } | |
fca78d6d | 8257 | |
97431204 AA |
8258 | /** |
8259 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8260 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8261 | */ | |
fca78d6d BS |
8262 | static int |
8263 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8264 | struct nfs_fsinfo *info, |
8265 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8266 | { |
8267 | struct nfs41_secinfo_no_name_args args = { | |
8268 | .style = SECINFO_STYLE_CURRENT_FH, | |
8269 | }; | |
8270 | struct nfs4_secinfo_res res = { | |
8271 | .flavors = flavors, | |
8272 | }; | |
8273 | struct rpc_message msg = { | |
8274 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8275 | .rpc_argp = &args, | |
8276 | .rpc_resp = &res, | |
8277 | }; | |
b1b3e136 | 8278 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8279 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8280 | int status; |
8281 | ||
8282 | if (use_integrity) { | |
8283 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8284 | cred = nfs4_get_clid_cred(server->nfs_client); |
8285 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8286 | } |
8287 | ||
8288 | dprintk("--> %s\n", __func__); | |
8289 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8290 | &res.seq_res, 0); | |
8291 | dprintk("<-- %s status=%d\n", __func__, status); | |
8292 | ||
7cb852df WAA |
8293 | if (cred) |
8294 | put_rpccred(cred); | |
b1b3e136 WAA |
8295 | |
8296 | return status; | |
fca78d6d BS |
8297 | } |
8298 | ||
8299 | static int | |
8300 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8301 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8302 | { | |
8303 | struct nfs4_exception exception = { }; | |
8304 | int err; | |
8305 | do { | |
b1b3e136 WAA |
8306 | /* first try using integrity protection */ |
8307 | err = -NFS4ERR_WRONGSEC; | |
8308 | ||
8309 | /* try to use integrity protection with machine cred */ | |
8310 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8311 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8312 | flavors, true); | |
8313 | ||
8314 | /* | |
8315 | * if unable to use integrity protection, or SECINFO with | |
8316 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8317 | * disallowed by spec, but exists in deployed servers) use | |
8318 | * the current filesystem's rpc_client and the user cred. | |
8319 | */ | |
8320 | if (err == -NFS4ERR_WRONGSEC) | |
8321 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8322 | flavors, false); | |
8323 | ||
fca78d6d BS |
8324 | switch (err) { |
8325 | case 0: | |
8326 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8327 | case -ENOTSUPP: |
05e9cfb4 | 8328 | goto out; |
fca78d6d BS |
8329 | default: |
8330 | err = nfs4_handle_exception(server, err, &exception); | |
8331 | } | |
8332 | } while (exception.retry); | |
05e9cfb4 | 8333 | out: |
fca78d6d BS |
8334 | return err; |
8335 | } | |
8336 | ||
8337 | static int | |
8338 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8339 | struct nfs_fsinfo *info) | |
8340 | { | |
8341 | int err; | |
8342 | struct page *page; | |
367156d9 | 8343 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8344 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8345 | struct nfs4_secinfo4 *secinfo; |
8346 | int i; | |
fca78d6d BS |
8347 | |
8348 | page = alloc_page(GFP_KERNEL); | |
8349 | if (!page) { | |
8350 | err = -ENOMEM; | |
8351 | goto out; | |
8352 | } | |
8353 | ||
8354 | flavors = page_address(page); | |
8355 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8356 | ||
8357 | /* | |
8358 | * Fall back on "guess and check" method if | |
8359 | * the server doesn't support SECINFO_NO_NAME | |
8360 | */ | |
78b19bae | 8361 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8362 | err = nfs4_find_root_sec(server, fhandle, info); |
8363 | goto out_freepage; | |
8364 | } | |
8365 | if (err) | |
8366 | goto out_freepage; | |
8367 | ||
58a8cf12 WAA |
8368 | for (i = 0; i < flavors->num_flavors; i++) { |
8369 | secinfo = &flavors->flavors[i]; | |
8370 | ||
8371 | switch (secinfo->flavor) { | |
8372 | case RPC_AUTH_NULL: | |
8373 | case RPC_AUTH_UNIX: | |
8374 | case RPC_AUTH_GSS: | |
8375 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8376 | &secinfo->flavor_info); | |
8377 | break; | |
8378 | default: | |
8379 | flavor = RPC_AUTH_MAXFLAVOR; | |
8380 | break; | |
8381 | } | |
8382 | ||
4d4b69dd WAA |
8383 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8384 | flavor = RPC_AUTH_MAXFLAVOR; | |
8385 | ||
58a8cf12 WAA |
8386 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8387 | err = nfs4_lookup_root_sec(server, fhandle, | |
8388 | info, flavor); | |
8389 | if (!err) | |
8390 | break; | |
8391 | } | |
8392 | } | |
8393 | ||
8394 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8395 | err = -EPERM; | |
fca78d6d BS |
8396 | |
8397 | out_freepage: | |
8398 | put_page(page); | |
8399 | if (err == -EACCES) | |
8400 | return -EPERM; | |
8401 | out: | |
8402 | return err; | |
8403 | } | |
1cab0652 | 8404 | |
ab7cb0df TM |
8405 | static int _nfs41_test_stateid(struct nfs_server *server, |
8406 | nfs4_stateid *stateid, | |
8407 | struct rpc_cred *cred) | |
7d974794 BS |
8408 | { |
8409 | int status; | |
8410 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8411 | .stateid = stateid, |
7d974794 BS |
8412 | }; |
8413 | struct nfs41_test_stateid_res res; | |
8414 | struct rpc_message msg = { | |
8415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8416 | .rpc_argp = &args, | |
8417 | .rpc_resp = &res, | |
ab7cb0df | 8418 | .rpc_cred = cred, |
7d974794 | 8419 | }; |
3787d506 WAA |
8420 | struct rpc_clnt *rpc_client = server->client; |
8421 | ||
8422 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8423 | &rpc_client, &msg); | |
1cab0652 | 8424 | |
38527b15 | 8425 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8426 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8427 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8428 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8429 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8430 | if (status != NFS_OK) { |
8431 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8432 | return status; |
38527b15 CL |
8433 | } |
8434 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8435 | return -res.status; |
7d974794 BS |
8436 | } |
8437 | ||
38527b15 CL |
8438 | /** |
8439 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8440 | * | |
8441 | * @server: server / transport on which to perform the operation | |
8442 | * @stateid: state ID to test | |
ab7cb0df | 8443 | * @cred: credential |
38527b15 CL |
8444 | * |
8445 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8446 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8447 | * failed or the state ID is not currently valid. | |
8448 | */ | |
ab7cb0df TM |
8449 | static int nfs41_test_stateid(struct nfs_server *server, |
8450 | nfs4_stateid *stateid, | |
8451 | struct rpc_cred *cred) | |
7d974794 BS |
8452 | { |
8453 | struct nfs4_exception exception = { }; | |
8454 | int err; | |
8455 | do { | |
ab7cb0df | 8456 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8457 | if (err != -NFS4ERR_DELAY) |
8458 | break; | |
8459 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8460 | } while (exception.retry); |
8461 | return err; | |
8462 | } | |
9aeda35f | 8463 | |
7c1d5fae TM |
8464 | struct nfs_free_stateid_data { |
8465 | struct nfs_server *server; | |
8466 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8467 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8468 | }; |
8469 | ||
8470 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8471 | { | |
8472 | struct nfs_free_stateid_data *data = calldata; | |
8473 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8474 | &data->args.seq_args, | |
8475 | &data->res.seq_res, | |
8476 | task); | |
8477 | } | |
8478 | ||
8479 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8480 | { | |
8481 | struct nfs_free_stateid_data *data = calldata; | |
8482 | ||
8483 | nfs41_sequence_done(task, &data->res.seq_res); | |
8484 | ||
8485 | switch (task->tk_status) { | |
8486 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8487 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8488 | rpc_restart_call_prepare(task); |
8489 | } | |
8490 | } | |
8491 | ||
8492 | static void nfs41_free_stateid_release(void *calldata) | |
8493 | { | |
8494 | kfree(calldata); | |
8495 | } | |
8496 | ||
17f26b12 | 8497 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8498 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8499 | .rpc_call_done = nfs41_free_stateid_done, | |
8500 | .rpc_release = nfs41_free_stateid_release, | |
8501 | }; | |
8502 | ||
8503 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8504 | nfs4_stateid *stateid, | |
ab7cb0df | 8505 | struct rpc_cred *cred, |
7c1d5fae TM |
8506 | bool privileged) |
8507 | { | |
9aeda35f BS |
8508 | struct rpc_message msg = { |
8509 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8510 | .rpc_cred = cred, |
9aeda35f | 8511 | }; |
7c1d5fae TM |
8512 | struct rpc_task_setup task_setup = { |
8513 | .rpc_client = server->client, | |
8514 | .rpc_message = &msg, | |
8515 | .callback_ops = &nfs41_free_stateid_ops, | |
8516 | .flags = RPC_TASK_ASYNC, | |
8517 | }; | |
8518 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8519 | |
3787d506 WAA |
8520 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8521 | &task_setup.rpc_client, &msg); | |
8522 | ||
38527b15 | 8523 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8524 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8525 | if (!data) | |
8526 | return ERR_PTR(-ENOMEM); | |
8527 | data->server = server; | |
8528 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8529 | ||
8530 | task_setup.callback_data = data; | |
8531 | ||
8532 | msg.rpc_argp = &data->args; | |
8533 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8534 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8535 | if (privileged) |
8536 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8537 | ||
8538 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8539 | } |
8540 | ||
38527b15 CL |
8541 | /** |
8542 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8543 | * | |
8544 | * @server: server / transport on which to perform the operation | |
8545 | * @stateid: state ID to release | |
ab7cb0df | 8546 | * @cred: credential |
38527b15 CL |
8547 | * |
8548 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8549 | * negative NFS4ERR value is returned. | |
8550 | */ | |
ab7cb0df TM |
8551 | static int nfs41_free_stateid(struct nfs_server *server, |
8552 | nfs4_stateid *stateid, | |
8553 | struct rpc_cred *cred) | |
9aeda35f | 8554 | { |
7c1d5fae TM |
8555 | struct rpc_task *task; |
8556 | int ret; | |
8557 | ||
ab7cb0df | 8558 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8559 | if (IS_ERR(task)) |
8560 | return PTR_ERR(task); | |
8561 | ret = rpc_wait_for_completion_task(task); | |
8562 | if (!ret) | |
8563 | ret = task->tk_status; | |
8564 | rpc_put_task(task); | |
8565 | return ret; | |
9aeda35f | 8566 | } |
36281caa | 8567 | |
f1cdae87 JL |
8568 | static void |
8569 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8570 | { |
8571 | struct rpc_task *task; | |
ab7cb0df | 8572 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8573 | |
ab7cb0df | 8574 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8575 | nfs4_free_lock_state(server, lsp); |
8576 | if (IS_ERR(task)) | |
f1cdae87 | 8577 | return; |
c8b2d0bf | 8578 | rpc_put_task(task); |
c8b2d0bf TM |
8579 | } |
8580 | ||
36281caa TM |
8581 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8582 | const nfs4_stateid *s2) | |
8583 | { | |
2d2f24ad | 8584 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8585 | return false; |
8586 | ||
2d2f24ad | 8587 | if (s1->seqid == s2->seqid) |
36281caa | 8588 | return true; |
2d2f24ad | 8589 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8590 | return true; |
8591 | ||
8592 | return false; | |
8593 | } | |
8594 | ||
557134a3 AA |
8595 | #endif /* CONFIG_NFS_V4_1 */ |
8596 | ||
36281caa TM |
8597 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8598 | const nfs4_stateid *s2) | |
8599 | { | |
f597c537 | 8600 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8601 | } |
8602 | ||
8603 | ||
17280175 | 8604 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8605 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8606 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8607 | .recover_open = nfs4_open_reclaim, |
8608 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8609 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8610 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8611 | }; |
8612 | ||
591d71cb | 8613 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8614 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8615 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8616 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8617 | .recover_open = nfs4_open_reclaim, | |
8618 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8619 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8620 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8621 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8622 | }; |
8623 | #endif /* CONFIG_NFS_V4_1 */ | |
8624 | ||
17280175 | 8625 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8626 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8627 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8628 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8629 | .recover_lock = nfs4_lock_expired, |
8630 | .establish_clid = nfs4_init_clientid, | |
8631 | }; | |
8632 | ||
8633 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8634 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8635 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8636 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8637 | .recover_open = nfs41_open_expired, |
8638 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8639 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8640 | }; |
591d71cb | 8641 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8642 | |
17280175 | 8643 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8644 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8645 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8646 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8647 | }; |
8648 | ||
8649 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8650 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8651 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8652 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8653 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8654 | }; |
8655 | #endif | |
8656 | ||
ec011fe8 | 8657 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8658 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8659 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8660 | }; |
8661 | ||
8662 | #if defined(CONFIG_NFS_V4_1) | |
8663 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8664 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8665 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8666 | }; |
8667 | #endif /* CONFIG_NFS_V4_1 */ | |
8668 | ||
97dc1359 TM |
8669 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8670 | .minor_version = 0, | |
39c6daae TM |
8671 | .init_caps = NFS_CAP_READDIRPLUS |
8672 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8673 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8674 | .init_client = nfs40_init_client, |
8675 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8676 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8677 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8678 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8679 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8680 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8681 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8682 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8683 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8684 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8685 | }; |
8686 | ||
8687 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8688 | static struct nfs_seqid * |
8689 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8690 | { | |
8691 | return NULL; | |
8692 | } | |
8693 | ||
97dc1359 TM |
8694 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8695 | .minor_version = 1, | |
39c6daae TM |
8696 | .init_caps = NFS_CAP_READDIRPLUS |
8697 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8698 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8699 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8700 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8701 | .init_client = nfs41_init_client, |
8702 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8703 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8704 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8705 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8706 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8707 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8708 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8709 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8710 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8711 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8712 | }; |
8713 | #endif | |
8714 | ||
42c2c424 SD |
8715 | #if defined(CONFIG_NFS_V4_2) |
8716 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8717 | .minor_version = 2, | |
7017310a BS |
8718 | .init_caps = NFS_CAP_READDIRPLUS |
8719 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8720 | | NFS_CAP_POSIX_LOCK |
8721 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8722 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8723 | | NFS_CAP_ALLOCATE |
624bd5b7 | 8724 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 8725 | | NFS_CAP_SEEK |
e5341f3a PT |
8726 | | NFS_CAP_LAYOUTSTATS |
8727 | | NFS_CAP_CLONE, | |
abf79bb3 CL |
8728 | .init_client = nfs41_init_client, |
8729 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8730 | .match_stateid = nfs41_match_stateid, |
8731 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8732 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8733 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8734 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8735 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8736 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8737 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8738 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8739 | }; |
8740 | #endif | |
8741 | ||
97dc1359 TM |
8742 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8743 | [0] = &nfs_v4_0_minor_ops, | |
8744 | #if defined(CONFIG_NFS_V4_1) | |
8745 | [1] = &nfs_v4_1_minor_ops, | |
8746 | #endif | |
42c2c424 SD |
8747 | #if defined(CONFIG_NFS_V4_2) |
8748 | [2] = &nfs_v4_2_minor_ops, | |
8749 | #endif | |
97dc1359 TM |
8750 | }; |
8751 | ||
17f26b12 | 8752 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8753 | .create = nfs_create, |
8754 | .lookup = nfs_lookup, | |
8755 | .atomic_open = nfs_atomic_open, | |
8756 | .link = nfs_link, | |
8757 | .unlink = nfs_unlink, | |
8758 | .symlink = nfs_symlink, | |
8759 | .mkdir = nfs_mkdir, | |
8760 | .rmdir = nfs_rmdir, | |
8761 | .mknod = nfs_mknod, | |
8762 | .rename = nfs_rename, | |
8763 | .permission = nfs_permission, | |
8764 | .getattr = nfs_getattr, | |
8765 | .setattr = nfs_setattr, | |
8766 | .getxattr = generic_getxattr, | |
8767 | .setxattr = generic_setxattr, | |
8768 | .listxattr = generic_listxattr, | |
8769 | .removexattr = generic_removexattr, | |
8770 | }; | |
8771 | ||
92e1d5be | 8772 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8773 | .permission = nfs_permission, |
8774 | .getattr = nfs_getattr, | |
8775 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8776 | .getxattr = generic_getxattr, |
8777 | .setxattr = generic_setxattr, | |
8778 | .listxattr = generic_listxattr, | |
8779 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8780 | }; |
8781 | ||
509de811 | 8782 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8783 | .version = 4, /* protocol version */ |
8784 | .dentry_ops = &nfs4_dentry_operations, | |
8785 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8786 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8787 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8788 | .getroot = nfs4_proc_get_root, |
281cad46 | 8789 | .submount = nfs4_submount, |
ff9099f2 | 8790 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8791 | .getattr = nfs4_proc_getattr, |
8792 | .setattr = nfs4_proc_setattr, | |
8793 | .lookup = nfs4_proc_lookup, | |
8794 | .access = nfs4_proc_access, | |
8795 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8796 | .create = nfs4_proc_create, |
8797 | .remove = nfs4_proc_remove, | |
8798 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8799 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8800 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8801 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8802 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8803 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8804 | .link = nfs4_proc_link, |
8805 | .symlink = nfs4_proc_symlink, | |
8806 | .mkdir = nfs4_proc_mkdir, | |
8807 | .rmdir = nfs4_proc_remove, | |
8808 | .readdir = nfs4_proc_readdir, | |
8809 | .mknod = nfs4_proc_mknod, | |
8810 | .statfs = nfs4_proc_statfs, | |
8811 | .fsinfo = nfs4_proc_fsinfo, | |
8812 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8813 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8814 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8815 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8816 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8817 | .read_done = nfs4_read_done, |
1da177e4 | 8818 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8819 | .write_done = nfs4_write_done, |
1da177e4 | 8820 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8821 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8822 | .commit_done = nfs4_commit_done, |
1da177e4 | 8823 | .lock = nfs4_proc_lock, |
e50a1c2e | 8824 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8825 | .close_context = nfs4_close_context, |
2b484297 | 8826 | .open_context = nfs4_atomic_open, |
011e2a7f | 8827 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8828 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8829 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8830 | .init_client = nfs4_init_client, |
cdb7eced | 8831 | .free_client = nfs4_free_client, |
1179acc6 BS |
8832 | .create_server = nfs4_create_server, |
8833 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8834 | }; |
8835 | ||
64c2ce8b AK |
8836 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8837 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8838 | .list = nfs4_xattr_list_nfs4_acl, | |
8839 | .get = nfs4_xattr_get_nfs4_acl, | |
8840 | .set = nfs4_xattr_set_nfs4_acl, | |
8841 | }; | |
8842 | ||
8843 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8844 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8845 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8846 | &nfs4_xattr_nfs4_label_handler, | |
8847 | #endif | |
64c2ce8b AK |
8848 | NULL |
8849 | }; | |
8850 | ||
1da177e4 LT |
8851 | /* |
8852 | * Local variables: | |
8853 | * c-basic-offset: 8 | |
8854 | * End: | |
8855 | */ |