]>
Commit | Line | Data |
---|---|---|
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 *); |
8478eaa1 | 81 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, long *); |
81934ddb | 82 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
83 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
84 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
85 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
86 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
87 | struct nfs4_state *state, struct nfs4_label *ilabel, |
88 | struct nfs4_label *olabel); | |
f062eb6c | 89 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
90 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
91 | struct rpc_cred *); | |
92 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
93 | struct rpc_cred *); | |
f062eb6c | 94 | #endif |
aa9c2669 DQ |
95 | |
96 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
97 | static inline struct nfs4_label * | |
98 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
99 | struct iattr *sattr, struct nfs4_label *label) | |
100 | { | |
101 | int err; | |
102 | ||
103 | if (label == NULL) | |
104 | return NULL; | |
105 | ||
106 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
107 | return NULL; | |
108 | ||
aa9c2669 DQ |
109 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
110 | &dentry->d_name, (void **)&label->label, &label->len); | |
111 | if (err == 0) | |
112 | return label; | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | static inline void | |
117 | nfs4_label_release_security(struct nfs4_label *label) | |
118 | { | |
119 | if (label) | |
120 | security_release_secctx(label->label, label->len); | |
121 | } | |
122 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
123 | { | |
124 | if (label) | |
125 | return server->attr_bitmask; | |
126 | ||
127 | return server->attr_bitmask_nl; | |
128 | } | |
129 | #else | |
130 | static inline struct nfs4_label * | |
131 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
132 | struct iattr *sattr, struct nfs4_label *l) | |
133 | { return NULL; } | |
134 | static inline void | |
135 | nfs4_label_release_security(struct nfs4_label *label) | |
136 | { return; } | |
137 | static inline u32 * | |
138 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
139 | { return server->attr_bitmask; } | |
140 | #endif | |
141 | ||
1da177e4 | 142 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 143 | static int nfs4_map_errors(int err) |
1da177e4 | 144 | { |
52567b03 TM |
145 | if (err >= -1000) |
146 | return err; | |
147 | switch (err) { | |
148 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
149 | case -NFS4ERR_LAYOUTTRYLATER: |
150 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 151 | return -EREMOTEIO; |
7ebb9315 | 152 | case -NFS4ERR_WRONGSEC: |
8897538e | 153 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 154 | return -EPERM; |
3ddeb7c5 TM |
155 | case -NFS4ERR_BADOWNER: |
156 | case -NFS4ERR_BADNAME: | |
157 | return -EINVAL; | |
fb13bfa7 TM |
158 | case -NFS4ERR_SHARE_DENIED: |
159 | return -EACCES; | |
f25efd85 SD |
160 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
161 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
162 | case -NFS4ERR_FILE_OPEN: |
163 | return -EBUSY; | |
52567b03 | 164 | default: |
1da177e4 | 165 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 166 | __func__, -err); |
52567b03 | 167 | break; |
1da177e4 | 168 | } |
52567b03 | 169 | return -EIO; |
1da177e4 LT |
170 | } |
171 | ||
172 | /* | |
173 | * This is our standard bitmap for GETATTR requests. | |
174 | */ | |
1549210f | 175 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
176 | FATTR4_WORD0_TYPE |
177 | | FATTR4_WORD0_CHANGE | |
178 | | FATTR4_WORD0_SIZE | |
179 | | FATTR4_WORD0_FSID | |
180 | | FATTR4_WORD0_FILEID, | |
181 | FATTR4_WORD1_MODE | |
182 | | FATTR4_WORD1_NUMLINKS | |
183 | | FATTR4_WORD1_OWNER | |
184 | | FATTR4_WORD1_OWNER_GROUP | |
185 | | FATTR4_WORD1_RAWDEV | |
186 | | FATTR4_WORD1_SPACE_USED | |
187 | | FATTR4_WORD1_TIME_ACCESS | |
188 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
189 | | FATTR4_WORD1_TIME_MODIFY |
190 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
191 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
192 | FATTR4_WORD2_SECURITY_LABEL | |
193 | #endif | |
1da177e4 LT |
194 | }; |
195 | ||
1549210f TM |
196 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
197 | FATTR4_WORD0_TYPE | |
198 | | FATTR4_WORD0_CHANGE | |
199 | | FATTR4_WORD0_SIZE | |
200 | | FATTR4_WORD0_FSID | |
201 | | FATTR4_WORD0_FILEID, | |
202 | FATTR4_WORD1_MODE | |
203 | | FATTR4_WORD1_NUMLINKS | |
204 | | FATTR4_WORD1_OWNER | |
205 | | FATTR4_WORD1_OWNER_GROUP | |
206 | | FATTR4_WORD1_RAWDEV | |
207 | | FATTR4_WORD1_SPACE_USED | |
208 | | FATTR4_WORD1_TIME_ACCESS | |
209 | | FATTR4_WORD1_TIME_METADATA | |
210 | | FATTR4_WORD1_TIME_MODIFY, | |
211 | FATTR4_WORD2_MDSTHRESHOLD | |
212 | }; | |
213 | ||
e23008ec AA |
214 | static const u32 nfs4_open_noattr_bitmap[3] = { |
215 | FATTR4_WORD0_TYPE | |
216 | | FATTR4_WORD0_CHANGE | |
217 | | FATTR4_WORD0_FILEID, | |
218 | }; | |
219 | ||
a09df2ca | 220 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
221 | FATTR4_WORD0_FILES_AVAIL |
222 | | FATTR4_WORD0_FILES_FREE | |
223 | | FATTR4_WORD0_FILES_TOTAL, | |
224 | FATTR4_WORD1_SPACE_AVAIL | |
225 | | FATTR4_WORD1_SPACE_FREE | |
226 | | FATTR4_WORD1_SPACE_TOTAL | |
227 | }; | |
228 | ||
a09df2ca | 229 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
230 | FATTR4_WORD0_MAXLINK |
231 | | FATTR4_WORD0_MAXNAME, | |
232 | 0 | |
233 | }; | |
234 | ||
dae100c2 | 235 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
236 | | FATTR4_WORD0_MAXREAD |
237 | | FATTR4_WORD0_MAXWRITE | |
238 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 239 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
240 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
241 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
242 | }; |
243 | ||
a09df2ca | 244 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
245 | FATTR4_WORD0_TYPE |
246 | | FATTR4_WORD0_CHANGE | |
247 | | FATTR4_WORD0_SIZE | |
248 | | FATTR4_WORD0_FSID | |
249 | | FATTR4_WORD0_FILEID | |
250 | | FATTR4_WORD0_FS_LOCATIONS, | |
251 | FATTR4_WORD1_MODE | |
252 | | FATTR4_WORD1_NUMLINKS | |
253 | | FATTR4_WORD1_OWNER | |
254 | | FATTR4_WORD1_OWNER_GROUP | |
255 | | FATTR4_WORD1_RAWDEV | |
256 | | FATTR4_WORD1_SPACE_USED | |
257 | | FATTR4_WORD1_TIME_ACCESS | |
258 | | FATTR4_WORD1_TIME_METADATA | |
259 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 260 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
261 | }; |
262 | ||
bc4785cd | 263 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
264 | struct nfs4_readdir_arg *readdir) |
265 | { | |
0dbb4c67 | 266 | __be32 *start, *p; |
1da177e4 | 267 | |
1da177e4 | 268 | if (cookie > 2) { |
b7ef1956 | 269 | readdir->cookie = cookie; |
1da177e4 LT |
270 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
271 | return; | |
272 | } | |
273 | ||
274 | readdir->cookie = 0; | |
275 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
276 | if (cookie == 2) | |
277 | return; | |
278 | ||
279 | /* | |
280 | * NFSv4 servers do not return entries for '.' and '..' | |
281 | * Therefore, we fake these entries here. We let '.' | |
282 | * have cookie 0 and '..' have cookie 1. Note that | |
283 | * when talking to the server, we always send cookie 0 | |
284 | * instead of 1 or 2. | |
285 | */ | |
2b86ce2d | 286 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
287 | |
288 | if (cookie == 0) { | |
289 | *p++ = xdr_one; /* next */ | |
290 | *p++ = xdr_zero; /* cookie, first word */ | |
291 | *p++ = xdr_one; /* cookie, second word */ | |
292 | *p++ = xdr_one; /* entry len */ | |
293 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
294 | p++; | |
295 | *p++ = xdr_one; /* bitmap length */ | |
296 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
297 | *p++ = htonl(8); /* attribute buffer length */ | |
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: | |
011e2a7f | 365 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 366 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
367 | exception->retry = 1; |
368 | return 0; | |
369 | } | |
370 | if (state == NULL) | |
371 | break; | |
5d422301 TM |
372 | ret = nfs4_schedule_stateid_recovery(server, state); |
373 | if (ret < 0) | |
374 | break; | |
3114ea7a | 375 | goto wait_on_recovery; |
0ced63d1 | 376 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
377 | if (state != NULL) { |
378 | ret = nfs4_schedule_stateid_recovery(server, state); | |
379 | if (ret < 0) | |
380 | break; | |
381 | } | |
65de872e | 382 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 383 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
384 | nfs4_schedule_lease_recovery(clp); |
385 | goto wait_on_recovery; | |
519ae255 CL |
386 | case -NFS4ERR_MOVED: |
387 | ret = nfs4_schedule_migration_recovery(server); | |
388 | if (ret < 0) | |
389 | break; | |
390 | goto wait_on_recovery; | |
8ef2f8d4 CL |
391 | case -NFS4ERR_LEASE_MOVED: |
392 | nfs4_schedule_lease_moved_recovery(clp); | |
393 | goto wait_on_recovery; | |
03391693 | 394 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
395 | case -NFS4ERR_BADSESSION: |
396 | case -NFS4ERR_BADSLOT: | |
397 | case -NFS4ERR_BAD_HIGH_SLOT: | |
398 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
399 | case -NFS4ERR_DEADSESSION: | |
400 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
401 | case -NFS4ERR_SEQ_MISORDERED: | |
402 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
403 | errorcode); | |
9f594791 | 404 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 405 | goto wait_on_recovery; |
03391693 | 406 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 407 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
408 | if (exception->timeout > HZ) { |
409 | /* We have retried a decent amount, time to | |
410 | * fail | |
411 | */ | |
412 | ret = -EBUSY; | |
413 | break; | |
414 | } | |
65de872e TM |
415 | case -NFS4ERR_GRACE: |
416 | case -NFS4ERR_DELAY: | |
b3c2aa07 TM |
417 | exception->delay = 1; |
418 | return 0; | |
419 | ||
a8a4ae3a | 420 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
421 | case -NFS4ERR_OLD_STATEID: |
422 | exception->retry = 1; | |
b064eca2 TM |
423 | break; |
424 | case -NFS4ERR_BADOWNER: | |
425 | /* The following works around a Linux server bug! */ | |
426 | case -NFS4ERR_BADNAME: | |
427 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
428 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
429 | exception->retry = 1; | |
430 | printk(KERN_WARNING "NFS: v4 server %s " | |
431 | "does not accept raw " | |
432 | "uid/gids. " | |
433 | "Reenabling the idmapper.\n", | |
434 | server->nfs_client->cl_hostname); | |
435 | } | |
65de872e TM |
436 | } |
437 | /* We failed to handle the error */ | |
438 | return nfs4_map_errors(ret); | |
0400a6b0 | 439 | wait_on_recovery: |
b3c2aa07 TM |
440 | exception->recovering = 1; |
441 | return 0; | |
442 | } | |
443 | ||
444 | /* This is the error handling routine for processes that are allowed | |
445 | * to sleep. | |
446 | */ | |
447 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
448 | { | |
449 | struct nfs_client *clp = server->nfs_client; | |
450 | int ret; | |
451 | ||
452 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
453 | if (exception->delay) { | |
454 | ret = nfs4_delay(server->client, &exception->timeout); | |
455 | goto out_retry; | |
456 | } | |
457 | if (exception->recovering) { | |
458 | ret = nfs4_wait_clnt_recover(clp); | |
459 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
460 | return -EIO; | |
461 | goto out_retry; | |
462 | } | |
463 | return ret; | |
464 | out_retry: | |
a2c0b9e2 TM |
465 | if (ret == 0) |
466 | exception->retry = 1; | |
467 | return ret; | |
65de872e TM |
468 | } |
469 | ||
a5250def WAA |
470 | /* |
471 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
472 | * or 'false' otherwise. | |
473 | */ | |
474 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
475 | { | |
476 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
477 | ||
478 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
479 | flavor == RPC_AUTH_GSS_KRB5P) | |
480 | return true; | |
481 | ||
482 | return false; | |
483 | } | |
65de872e | 484 | |
452e9352 | 485 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 486 | { |
1da177e4 LT |
487 | spin_lock(&clp->cl_lock); |
488 | if (time_before(clp->cl_last_renewal,timestamp)) | |
489 | clp->cl_last_renewal = timestamp; | |
490 | spin_unlock(&clp->cl_lock); | |
491 | } | |
492 | ||
452e9352 TM |
493 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
494 | { | |
be824167 TM |
495 | struct nfs_client *clp = server->nfs_client; |
496 | ||
497 | if (!nfs4_has_session(clp)) | |
498 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
499 | } |
500 | ||
2a3eb2b9 CL |
501 | struct nfs4_call_sync_data { |
502 | const struct nfs_server *seq_server; | |
503 | struct nfs4_sequence_args *seq_args; | |
504 | struct nfs4_sequence_res *seq_res; | |
505 | }; | |
506 | ||
be3a5d23 TM |
507 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
508 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
509 | { |
510 | args->sa_slot = NULL; | |
511 | args->sa_cache_this = cache_reply; | |
512 | args->sa_privileged = 0; | |
513 | ||
514 | res->sr_slot = NULL; | |
515 | } | |
516 | ||
517 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
518 | { | |
519 | args->sa_privileged = 1; | |
520 | } | |
521 | ||
cb04ad2a PT |
522 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
523 | struct nfs4_sequence_args *args, | |
524 | struct nfs4_sequence_res *res, | |
525 | struct rpc_task *task) | |
3bd2384a | 526 | { |
3bd2384a CL |
527 | struct nfs4_slot *slot; |
528 | ||
529 | /* slot already allocated? */ | |
530 | if (res->sr_slot != NULL) | |
531 | goto out_start; | |
532 | ||
533 | spin_lock(&tbl->slot_tbl_lock); | |
534 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
535 | goto out_sleep; | |
536 | ||
537 | slot = nfs4_alloc_slot(tbl); | |
538 | if (IS_ERR(slot)) { | |
539 | if (slot == ERR_PTR(-ENOMEM)) | |
540 | task->tk_timeout = HZ >> 2; | |
541 | goto out_sleep; | |
542 | } | |
543 | spin_unlock(&tbl->slot_tbl_lock); | |
544 | ||
545 | args->sa_slot = slot; | |
546 | res->sr_slot = slot; | |
547 | ||
548 | out_start: | |
549 | rpc_call_start(task); | |
550 | return 0; | |
551 | ||
552 | out_sleep: | |
553 | if (args->sa_privileged) | |
554 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
555 | NULL, RPC_PRIORITY_PRIVILEGED); | |
556 | else | |
557 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
558 | spin_unlock(&tbl->slot_tbl_lock); | |
559 | return -EAGAIN; | |
560 | } | |
cb04ad2a | 561 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
562 | |
563 | static int nfs40_sequence_done(struct rpc_task *task, | |
564 | struct nfs4_sequence_res *res) | |
565 | { | |
566 | struct nfs4_slot *slot = res->sr_slot; | |
567 | struct nfs4_slot_table *tbl; | |
568 | ||
cab92c19 | 569 | if (slot == NULL) |
3bd2384a CL |
570 | goto out; |
571 | ||
572 | tbl = slot->table; | |
573 | spin_lock(&tbl->slot_tbl_lock); | |
574 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
575 | nfs4_free_slot(tbl, slot); | |
576 | spin_unlock(&tbl->slot_tbl_lock); | |
577 | ||
578 | res->sr_slot = NULL; | |
579 | out: | |
580 | return 1; | |
581 | } | |
582 | ||
cccef3b9 AA |
583 | #if defined(CONFIG_NFS_V4_1) |
584 | ||
d185a334 | 585 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 586 | { |
e3725ec0 | 587 | struct nfs4_session *session; |
13615871 | 588 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 589 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 590 | bool send_new_highest_used_slotid = false; |
13615871 | 591 | |
a13ce7c6 | 592 | tbl = slot->table; |
e3725ec0 | 593 | session = tbl->session; |
ea028ac9 | 594 | |
35dc1d74 | 595 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
596 | /* Be nice to the server: try to ensure that the last transmitted |
597 | * value for highest_user_slotid <= target_highest_slotid | |
598 | */ | |
599 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
600 | send_new_highest_used_slotid = true; | |
601 | ||
a13ce7c6 | 602 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
603 | send_new_highest_used_slotid = false; |
604 | goto out_unlock; | |
605 | } | |
a13ce7c6 | 606 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
607 | |
608 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
609 | send_new_highest_used_slotid = false; | |
b75ad4cd | 610 | out_unlock: |
35dc1d74 | 611 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 612 | res->sr_slot = NULL; |
c10e4498 | 613 | if (send_new_highest_used_slotid) |
3f10a6af | 614 | nfs41_notify_server(session->clp); |
13615871 AA |
615 | } |
616 | ||
f9c96fcc | 617 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 618 | { |
e3725ec0 | 619 | struct nfs4_session *session; |
a13ce7c6 | 620 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 621 | struct nfs_client *clp; |
ac20d163 | 622 | bool interrupted = false; |
85563073 | 623 | int ret = 1; |
b0df806c | 624 | |
a13ce7c6 TM |
625 | if (slot == NULL) |
626 | goto out_noaction; | |
468f8613 BS |
627 | /* don't increment the sequence number if the task wasn't sent */ |
628 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
629 | goto out; |
630 | ||
e3725ec0 | 631 | session = slot->table->session; |
933602e3 | 632 | |
ac20d163 TM |
633 | if (slot->interrupted) { |
634 | slot->interrupted = 0; | |
635 | interrupted = true; | |
636 | } | |
637 | ||
2f92ae34 | 638 | trace_nfs4_sequence_done(session, res); |
691daf3b | 639 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
640 | switch (res->sr_status) { |
641 | case 0: | |
b0df806c | 642 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 643 | ++slot->seq_nr; |
e3725ec0 | 644 | clp = session->clp; |
8e63b6a8 | 645 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 646 | /* Check sequence flags */ |
b15c7cdd | 647 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 648 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 649 | break; |
ac20d163 TM |
650 | case 1: |
651 | /* | |
652 | * sr_status remains 1 if an RPC level error occurred. | |
653 | * The server may or may not have processed the sequence | |
654 | * operation.. | |
655 | * Mark the slot as having hosted an interrupted RPC call. | |
656 | */ | |
657 | slot->interrupted = 1; | |
658 | goto out; | |
14516c3a TM |
659 | case -NFS4ERR_DELAY: |
660 | /* The server detected a resend of the RPC call and | |
661 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
662 | * of RFC5661. | |
663 | */ | |
df2fabff | 664 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 665 | __func__, |
df2fabff | 666 | slot->slot_nr, |
933602e3 | 667 | slot->seq_nr); |
14516c3a | 668 | goto out_retry; |
85563073 TM |
669 | case -NFS4ERR_BADSLOT: |
670 | /* | |
671 | * The slot id we used was probably retired. Try again | |
672 | * using a different slot id. | |
673 | */ | |
e8794440 TM |
674 | goto retry_nowait; |
675 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
676 | /* |
677 | * Was the last operation on this sequence interrupted? | |
678 | * If so, retry after bumping the sequence number. | |
679 | */ | |
680 | if (interrupted) { | |
681 | ++slot->seq_nr; | |
682 | goto retry_nowait; | |
683 | } | |
e8794440 TM |
684 | /* |
685 | * Could this slot have been previously retired? | |
686 | * If so, then the server may be expecting seq_nr = 1! | |
687 | */ | |
8e63b6a8 TM |
688 | if (slot->seq_nr != 1) { |
689 | slot->seq_nr = 1; | |
690 | goto retry_nowait; | |
691 | } | |
692 | break; | |
e8794440 TM |
693 | case -NFS4ERR_SEQ_FALSE_RETRY: |
694 | ++slot->seq_nr; | |
695 | goto retry_nowait; | |
14516c3a TM |
696 | default: |
697 | /* Just update the slot sequence no. */ | |
933602e3 | 698 | ++slot->seq_nr; |
b0df806c AA |
699 | } |
700 | out: | |
701 | /* The session may be reset by one of the error handlers. */ | |
702 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 703 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 704 | out_noaction: |
85563073 | 705 | return ret; |
e8794440 TM |
706 | retry_nowait: |
707 | if (rpc_restart_call_prepare(task)) { | |
708 | task->tk_status = 0; | |
709 | ret = 0; | |
710 | } | |
711 | goto out; | |
14516c3a | 712 | out_retry: |
d05dd4e9 | 713 | if (!rpc_restart_call(task)) |
14516c3a TM |
714 | goto out; |
715 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
716 | return 0; | |
b0df806c | 717 | } |
f9c96fcc | 718 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 719 | |
2c4b131d | 720 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 721 | { |
e3725ec0 | 722 | if (res->sr_slot == NULL) |
14516c3a | 723 | return 1; |
3bd2384a CL |
724 | if (!res->sr_slot->table->session) |
725 | return nfs40_sequence_done(task, res); | |
14516c3a | 726 | return nfs41_sequence_done(task, res); |
df896455 | 727 | } |
2c4b131d | 728 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 729 | |
dc70d7b3 | 730 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
731 | struct nfs4_sequence_args *args, |
732 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
733 | struct rpc_task *task) |
734 | { | |
fbcd4abc AA |
735 | struct nfs4_slot *slot; |
736 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
737 | |
738 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 739 | /* slot already allocated? */ |
dfb4f309 | 740 | if (res->sr_slot != NULL) |
d9afbd1b | 741 | goto out_success; |
ce5039c1 | 742 | |
fbcd4abc AA |
743 | tbl = &session->fc_slot_table; |
744 | ||
69d206b5 TM |
745 | task->tk_timeout = 0; |
746 | ||
fbcd4abc | 747 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 748 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 749 | !args->sa_privileged) { |
0b1c8fc4 | 750 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 751 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 752 | goto out_sleep; |
689cf5c1 AB |
753 | } |
754 | ||
2dc03b7f | 755 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
756 | if (IS_ERR(slot)) { |
757 | /* If out of memory, try again in 1/4 second */ | |
758 | if (slot == ERR_PTR(-ENOMEM)) | |
759 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 760 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 761 | goto out_sleep; |
fbcd4abc AA |
762 | } |
763 | spin_unlock(&tbl->slot_tbl_lock); | |
764 | ||
2b2fa717 | 765 | args->sa_slot = slot; |
fbcd4abc | 766 | |
e8d92382 | 767 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 768 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 769 | |
dfb4f309 | 770 | res->sr_slot = slot; |
8e63b6a8 | 771 | res->sr_timestamp = jiffies; |
2a6e26cd | 772 | res->sr_status_flags = 0; |
fbcd4abc AA |
773 | /* |
774 | * sr_status is only set in decode_sequence, and so will remain | |
775 | * set to 1 if an rpc level failure occurs. | |
776 | */ | |
777 | res->sr_status = 1; | |
2f92ae34 | 778 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
779 | out_success: |
780 | rpc_call_start(task); | |
ce5039c1 | 781 | return 0; |
7b939a3f | 782 | out_sleep: |
8fe72bac TM |
783 | /* Privileged tasks are queued with top priority */ |
784 | if (args->sa_privileged) | |
1e1093c7 TM |
785 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
786 | NULL, RPC_PRIORITY_PRIVILEGED); | |
787 | else | |
788 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
789 | spin_unlock(&tbl->slot_tbl_lock); |
790 | return -EAGAIN; | |
ce5039c1 | 791 | } |
dc70d7b3 | 792 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 793 | |
5a580e0a CL |
794 | static int nfs4_setup_sequence(const struct nfs_server *server, |
795 | struct nfs4_sequence_args *args, | |
796 | struct nfs4_sequence_res *res, | |
797 | struct rpc_task *task) | |
ce5039c1 | 798 | { |
035168ab | 799 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
800 | int ret = 0; |
801 | ||
3bd2384a | 802 | if (!session) |
cb04ad2a PT |
803 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
804 | args, res, task); | |
035168ab | 805 | |
e8d92382 | 806 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 807 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 808 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 809 | |
9d12b216 | 810 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 811 | |
ce5039c1 AA |
812 | dprintk("<-- %s status=%d\n", __func__, ret); |
813 | return ret; | |
814 | } | |
815 | ||
ce5039c1 AA |
816 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
817 | { | |
2a3eb2b9 | 818 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 819 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 820 | |
035168ab TM |
821 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
822 | ||
d9afbd1b | 823 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
824 | } |
825 | ||
69ab40c4 AA |
826 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
827 | { | |
2a3eb2b9 | 828 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 829 | |
14516c3a | 830 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
831 | } |
832 | ||
17280175 | 833 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 834 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 835 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
836 | }; |
837 | ||
3bd2384a CL |
838 | #else /* !CONFIG_NFS_V4_1 */ |
839 | ||
9915ea7e CL |
840 | static int nfs4_setup_sequence(const struct nfs_server *server, |
841 | struct nfs4_sequence_args *args, | |
842 | struct nfs4_sequence_res *res, | |
843 | struct rpc_task *task) | |
844 | { | |
cb04ad2a PT |
845 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
846 | args, res, task); | |
9915ea7e CL |
847 | } |
848 | ||
2c4b131d PT |
849 | int nfs4_sequence_done(struct rpc_task *task, |
850 | struct nfs4_sequence_res *res) | |
9915ea7e | 851 | { |
3bd2384a | 852 | return nfs40_sequence_done(task, res); |
9915ea7e | 853 | } |
2c4b131d | 854 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
855 | |
856 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
857 | |
858 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
859 | { | |
860 | struct nfs4_call_sync_data *data = calldata; | |
861 | nfs4_setup_sequence(data->seq_server, | |
862 | data->seq_args, data->seq_res, task); | |
863 | } | |
864 | ||
865 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
866 | { | |
867 | struct nfs4_call_sync_data *data = calldata; | |
868 | nfs4_sequence_done(task, data->seq_res); | |
869 | } | |
870 | ||
871 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
872 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
873 | .rpc_call_done = nfs40_call_sync_done, | |
874 | }; | |
875 | ||
7c513058 BS |
876 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
877 | struct nfs_server *server, | |
ce5039c1 AA |
878 | struct rpc_message *msg, |
879 | struct nfs4_sequence_args *args, | |
8fe72bac | 880 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
881 | { |
882 | int ret; | |
883 | struct rpc_task *task; | |
9915ea7e | 884 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 885 | struct nfs4_call_sync_data data = { |
035168ab | 886 | .seq_server = server, |
ce5039c1 AA |
887 | .seq_args = args, |
888 | .seq_res = res, | |
ce5039c1 AA |
889 | }; |
890 | struct rpc_task_setup task_setup = { | |
7c513058 | 891 | .rpc_client = clnt, |
ce5039c1 | 892 | .rpc_message = msg, |
9915ea7e | 893 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
894 | .callback_data = &data |
895 | }; | |
896 | ||
ce5039c1 AA |
897 | task = rpc_run_task(&task_setup); |
898 | if (IS_ERR(task)) | |
899 | ret = PTR_ERR(task); | |
900 | else { | |
901 | ret = task->tk_status; | |
902 | rpc_put_task(task); | |
903 | } | |
904 | return ret; | |
905 | } | |
906 | ||
7c513058 BS |
907 | int nfs4_call_sync(struct rpc_clnt *clnt, |
908 | struct nfs_server *server, | |
e73b83f2 BS |
909 | struct rpc_message *msg, |
910 | struct nfs4_sequence_args *args, | |
911 | struct nfs4_sequence_res *res, | |
912 | int cache_reply) | |
913 | { | |
a9c92d6b | 914 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 915 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 916 | } |
cccef3b9 | 917 | |
38478b24 | 918 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 919 | { |
38478b24 | 920 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 921 | |
38478b24 | 922 | spin_lock(&dir->i_lock); |
359d7d1c | 923 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 924 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 925 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 926 | dir->i_version = cinfo->after; |
3235b403 | 927 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 928 | nfs_fscache_invalidate(dir); |
38478b24 | 929 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
930 | } |
931 | ||
e56e0b78 | 932 | struct nfs4_opendata { |
c6d00e63 | 933 | struct kref kref; |
e56e0b78 TM |
934 | struct nfs_openargs o_arg; |
935 | struct nfs_openres o_res; | |
cdd4e68b TM |
936 | struct nfs_open_confirmargs c_arg; |
937 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
938 | struct nfs4_string owner_name; |
939 | struct nfs4_string group_name; | |
a49c2691 | 940 | struct nfs4_label *a_label; |
e56e0b78 | 941 | struct nfs_fattr f_attr; |
1775fd3e | 942 | struct nfs4_label *f_label; |
e56e0b78 | 943 | struct dentry *dir; |
82a2c1b7 | 944 | struct dentry *dentry; |
e56e0b78 | 945 | struct nfs4_state_owner *owner; |
aac00a8d | 946 | struct nfs4_state *state; |
e56e0b78 | 947 | struct iattr attrs; |
26e976a8 | 948 | unsigned long timestamp; |
3e309914 | 949 | unsigned int rpc_done : 1; |
5bc2afc2 | 950 | unsigned int file_created : 1; |
bdeca1b7 | 951 | unsigned int is_recover : 1; |
24ac23ab TM |
952 | int rpc_status; |
953 | int cancelled; | |
e56e0b78 TM |
954 | }; |
955 | ||
49f9a0fa TM |
956 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
957 | int err, struct nfs4_exception *exception) | |
958 | { | |
959 | if (err != -EINVAL) | |
960 | return false; | |
961 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
962 | return false; | |
963 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
964 | exception->retry = 1; | |
965 | return true; | |
966 | } | |
967 | ||
6ae37339 TM |
968 | static u32 |
969 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
970 | fmode_t fmode, int openflags) | |
971 | { | |
972 | u32 res = 0; | |
973 | ||
974 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
975 | case FMODE_READ: | |
976 | res = NFS4_SHARE_ACCESS_READ; | |
977 | break; | |
978 | case FMODE_WRITE: | |
979 | res = NFS4_SHARE_ACCESS_WRITE; | |
980 | break; | |
981 | case FMODE_READ|FMODE_WRITE: | |
982 | res = NFS4_SHARE_ACCESS_BOTH; | |
983 | } | |
984 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
985 | goto out; | |
986 | /* Want no delegation if we're using O_DIRECT */ | |
987 | if (openflags & O_DIRECT) | |
988 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
989 | out: | |
990 | return res; | |
991 | } | |
992 | ||
49f9a0fa TM |
993 | static enum open_claim_type4 |
994 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
995 | enum open_claim_type4 claim) | |
996 | { | |
997 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
998 | return claim; | |
999 | switch (claim) { | |
1000 | default: | |
1001 | return claim; | |
1002 | case NFS4_OPEN_CLAIM_FH: | |
1003 | return NFS4_OPEN_CLAIM_NULL; | |
1004 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1005 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1006 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1007 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1008 | } | |
1009 | } | |
2ced46c2 TM |
1010 | |
1011 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1012 | { | |
1013 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1014 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1015 | p->o_res.seqid = p->o_arg.seqid; |
1016 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1017 | p->o_res.server = p->o_arg.server; |
5f657530 | 1018 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1019 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1020 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1021 | } |
1022 | ||
82a2c1b7 | 1023 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1024 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1025 | const struct iattr *attrs, |
1775fd3e | 1026 | struct nfs4_label *label, |
4a1c0893 | 1027 | enum open_claim_type4 claim, |
8535b2be | 1028 | gfp_t gfp_mask) |
e56e0b78 | 1029 | { |
82a2c1b7 | 1030 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1031 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1032 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1033 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1034 | struct nfs4_opendata *p; |
1035 | ||
8535b2be | 1036 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1037 | if (p == NULL) |
1038 | goto err; | |
14c43f76 DQ |
1039 | |
1040 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1041 | if (IS_ERR(p->f_label)) | |
1042 | goto err_free_p; | |
1043 | ||
a49c2691 KM |
1044 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1045 | if (IS_ERR(p->a_label)) | |
1046 | goto err_free_f; | |
1047 | ||
63f5f796 TM |
1048 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1049 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1050 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1051 | goto err_free_label; |
82a2c1b7 AV |
1052 | nfs_sb_active(dentry->d_sb); |
1053 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1054 | p->dir = parent; |
1055 | p->owner = sp; | |
1056 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1057 | p->o_arg.open_flags = flags; |
1058 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1059 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1060 | fmode, flags); | |
ae2bb032 WAA |
1061 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1062 | * will return permission denied for all bits until close */ | |
1063 | if (!(flags & O_EXCL)) { | |
1064 | /* ask server to check for all possible rights as results | |
1065 | * are cached */ | |
1066 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1067 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1068 | } |
7539bbab | 1069 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1070 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1071 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1072 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1073 | p->o_arg.server = server; |
aa9c2669 | 1074 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1075 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1076 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1077 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1078 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1079 | case NFS4_OPEN_CLAIM_NULL: |
1080 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1081 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1082 | p->o_arg.fh = NFS_FH(dir); | |
1083 | break; | |
1084 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1085 | case NFS4_OPEN_CLAIM_FH: | |
1086 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1087 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1088 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1089 | } |
536e43d1 | 1090 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1091 | __u32 verf[2]; |
d77d76ff | 1092 | |
e56e0b78 TM |
1093 | p->o_arg.u.attrs = &p->attrs; |
1094 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1095 | |
1096 | verf[0] = jiffies; | |
1097 | verf[1] = current->pid; | |
1098 | memcpy(p->o_arg.u.verifier.data, verf, | |
1099 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1100 | } |
cdd4e68b TM |
1101 | p->c_arg.fh = &p->o_res.fh; |
1102 | p->c_arg.stateid = &p->o_res.stateid; | |
1103 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1104 | nfs4_init_opendata_res(p); |
c6d00e63 | 1105 | kref_init(&p->kref); |
e56e0b78 | 1106 | return p; |
14c43f76 DQ |
1107 | |
1108 | err_free_label: | |
a49c2691 KM |
1109 | nfs4_label_free(p->a_label); |
1110 | err_free_f: | |
14c43f76 DQ |
1111 | nfs4_label_free(p->f_label); |
1112 | err_free_p: | |
e56e0b78 TM |
1113 | kfree(p); |
1114 | err: | |
1115 | dput(parent); | |
1116 | return NULL; | |
1117 | } | |
1118 | ||
c6d00e63 | 1119 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1120 | { |
c6d00e63 TM |
1121 | struct nfs4_opendata *p = container_of(kref, |
1122 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1123 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1124 | |
1125 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1126 | if (p->state != NULL) |
1127 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1128 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1129 | |
a49c2691 | 1130 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1131 | nfs4_label_free(p->f_label); |
1132 | ||
c6d00e63 | 1133 | dput(p->dir); |
82a2c1b7 AV |
1134 | dput(p->dentry); |
1135 | nfs_sb_deactive(sb); | |
6926afd1 | 1136 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1137 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1138 | kfree(p); |
1139 | } | |
1140 | ||
1141 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1142 | { | |
1143 | if (p != NULL) | |
1144 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1145 | } |
1146 | ||
06f814a3 TM |
1147 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1148 | { | |
06f814a3 TM |
1149 | int ret; |
1150 | ||
06f814a3 | 1151 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1152 | return ret; |
1153 | } | |
1154 | ||
24311f88 TM |
1155 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1156 | fmode_t fmode) | |
1157 | { | |
1158 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1159 | case FMODE_READ|FMODE_WRITE: | |
1160 | return state->n_rdwr != 0; | |
1161 | case FMODE_WRITE: | |
1162 | return state->n_wronly != 0; | |
1163 | case FMODE_READ: | |
1164 | return state->n_rdonly != 0; | |
1165 | } | |
1166 | WARN_ON_ONCE(1); | |
1167 | return false; | |
1168 | } | |
1169 | ||
dc0b027d | 1170 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1171 | { |
1172 | int ret = 0; | |
dc0b027d | 1173 | |
536e43d1 | 1174 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1175 | goto out; |
1176 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1177 | case FMODE_READ: |
88069f77 TM |
1178 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1179 | && state->n_rdonly != 0; | |
6ee41268 TM |
1180 | break; |
1181 | case FMODE_WRITE: | |
88069f77 TM |
1182 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1183 | && state->n_wronly != 0; | |
6ee41268 TM |
1184 | break; |
1185 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1186 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1187 | && state->n_rdwr != 0; | |
6ee41268 | 1188 | } |
dc0b027d | 1189 | out: |
6ee41268 TM |
1190 | return ret; |
1191 | } | |
1192 | ||
2a606188 TM |
1193 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1194 | enum open_claim_type4 claim) | |
aac00a8d | 1195 | { |
652f89f6 TM |
1196 | if (delegation == NULL) |
1197 | return 0; | |
dc0b027d | 1198 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1199 | return 0; |
d25be546 TM |
1200 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1201 | return 0; | |
2a606188 TM |
1202 | switch (claim) { |
1203 | case NFS4_OPEN_CLAIM_NULL: | |
1204 | case NFS4_OPEN_CLAIM_FH: | |
1205 | break; | |
1206 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1207 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1208 | break; | |
1209 | default: | |
1210 | return 0; | |
1211 | } | |
b7391f44 | 1212 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1213 | return 1; |
1214 | } | |
1215 | ||
dc0b027d | 1216 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1217 | { |
dc0b027d | 1218 | switch (fmode) { |
e7616923 TM |
1219 | case FMODE_WRITE: |
1220 | state->n_wronly++; | |
1221 | break; | |
1222 | case FMODE_READ: | |
1223 | state->n_rdonly++; | |
1224 | break; | |
1225 | case FMODE_READ|FMODE_WRITE: | |
1226 | state->n_rdwr++; | |
1227 | } | |
dc0b027d | 1228 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1229 | } |
1230 | ||
4f14c194 TM |
1231 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1232 | { | |
1233 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1234 | bool need_recover = false; | |
1235 | ||
1236 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1237 | need_recover = true; | |
1238 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1239 | need_recover = true; | |
1240 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1241 | need_recover = true; | |
1242 | if (need_recover) | |
1243 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1244 | } | |
1245 | ||
e999e80e TM |
1246 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1247 | nfs4_stateid *stateid) | |
1248 | { | |
1249 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1250 | return true; | |
4f14c194 TM |
1251 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1252 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1253 | return true; |
4f14c194 | 1254 | } |
e999e80e TM |
1255 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1256 | return true; | |
1257 | return false; | |
1258 | } | |
1259 | ||
f95549cf TM |
1260 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1261 | { | |
3c38cbe2 TM |
1262 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1263 | return; | |
f95549cf TM |
1264 | if (state->n_wronly) |
1265 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1266 | if (state->n_rdonly) | |
1267 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1268 | if (state->n_rdwr) | |
1269 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1270 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1271 | } |
1272 | ||
226056c5 | 1273 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1274 | nfs4_stateid *arg_stateid, |
226056c5 | 1275 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1276 | { |
226056c5 TM |
1277 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1278 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1279 | case FMODE_WRITE: | |
1280 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1281 | break; | |
1282 | case FMODE_READ: | |
1283 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1284 | break; | |
1285 | case 0: | |
1286 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1287 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1288 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1289 | } | |
1290 | if (stateid == NULL) | |
1291 | return; | |
f95549cf | 1292 | /* Handle races with OPEN */ |
4a1e2feb TM |
1293 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1294 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1295 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1296 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1297 | return; |
f95549cf | 1298 | } |
003707c7 | 1299 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1300 | nfs4_stateid_copy(&state->stateid, stateid); |
1301 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1302 | } |
1303 | ||
4a1e2feb TM |
1304 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1305 | nfs4_stateid *arg_stateid, | |
1306 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1307 | { |
1308 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1309 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1310 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1311 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1312 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1313 | } |
1314 | ||
dc0b027d | 1315 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1316 | { |
dc0b027d | 1317 | switch (fmode) { |
003707c7 TM |
1318 | case FMODE_READ: |
1319 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1320 | break; | |
1321 | case FMODE_WRITE: | |
1322 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1323 | break; | |
1324 | case FMODE_READ|FMODE_WRITE: | |
1325 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1326 | } | |
e999e80e TM |
1327 | if (!nfs_need_update_open_stateid(state, stateid)) |
1328 | return; | |
1329 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1330 | nfs4_stateid_copy(&state->stateid, stateid); | |
1331 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1332 | } |
1333 | ||
dc0b027d | 1334 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1335 | { |
8bda4e4c TM |
1336 | /* |
1337 | * Protect the call to nfs4_state_set_mode_locked and | |
1338 | * serialise the stateid update | |
1339 | */ | |
1340 | write_seqlock(&state->seqlock); | |
003707c7 | 1341 | if (deleg_stateid != NULL) { |
f597c537 | 1342 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1343 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1344 | } | |
1345 | if (open_stateid != NULL) | |
dc0b027d | 1346 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1347 | write_sequnlock(&state->seqlock); |
1348 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1349 | update_open_stateflags(state, fmode); |
ec073428 | 1350 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1351 | } |
1352 | ||
dc0b027d | 1353 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1354 | { |
1355 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1356 | struct nfs_delegation *deleg_cur; | |
1357 | int ret = 0; | |
1358 | ||
dc0b027d | 1359 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1360 | |
1361 | rcu_read_lock(); | |
1362 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1363 | if (deleg_cur == NULL) | |
1364 | goto no_delegation; | |
1365 | ||
1366 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1367 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1368 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1369 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1370 | goto no_delegation_unlock; |
1371 | ||
1372 | if (delegation == NULL) | |
1373 | delegation = &deleg_cur->stateid; | |
f597c537 | 1374 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1375 | goto no_delegation_unlock; |
1376 | ||
b7391f44 | 1377 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1378 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1379 | ret = 1; |
1380 | no_delegation_unlock: | |
1381 | spin_unlock(&deleg_cur->lock); | |
1382 | no_delegation: | |
1383 | rcu_read_unlock(); | |
1384 | ||
1385 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1386 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1387 | ret = 1; |
1388 | } | |
4f14c194 TM |
1389 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1390 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1391 | |
1392 | return ret; | |
1393 | } | |
1394 | ||
39071e6f TM |
1395 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1396 | const nfs4_stateid *stateid) | |
1397 | { | |
1398 | struct nfs4_state *state = lsp->ls_state; | |
1399 | bool ret = false; | |
1400 | ||
1401 | spin_lock(&state->state_lock); | |
1402 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1403 | goto out_noupdate; | |
1404 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1405 | goto out_noupdate; | |
1406 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1407 | ret = true; | |
1408 | out_noupdate: | |
1409 | spin_unlock(&state->state_lock); | |
1410 | return ret; | |
1411 | } | |
34310430 | 1412 | |
dc0b027d | 1413 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1414 | { |
1415 | struct nfs_delegation *delegation; | |
1416 | ||
1417 | rcu_read_lock(); | |
1418 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1419 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1420 | rcu_read_unlock(); |
1421 | return; | |
1422 | } | |
1423 | rcu_read_unlock(); | |
57ec14c5 | 1424 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1425 | } |
1426 | ||
6ee41268 | 1427 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1428 | { |
1429 | struct nfs4_state *state = opendata->state; | |
1430 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1431 | struct nfs_delegation *delegation; | |
f448badd | 1432 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1433 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1434 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1435 | nfs4_stateid stateid; |
1436 | int ret = -EAGAIN; | |
1437 | ||
aac00a8d | 1438 | for (;;) { |
61beef75 | 1439 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1440 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1441 | update_open_stateflags(state, fmode); |
6ee41268 | 1442 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1443 | goto out_return_state; |
6ee41268 | 1444 | } |
61beef75 | 1445 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1446 | rcu_read_lock(); |
1447 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1448 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1449 | rcu_read_unlock(); |
aac00a8d | 1450 | break; |
34310430 | 1451 | } |
aac00a8d | 1452 | /* Save the delegation */ |
f597c537 | 1453 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1454 | rcu_read_unlock(); |
fa332941 | 1455 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1456 | if (!opendata->is_recover) { |
1457 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1458 | if (ret != 0) | |
1459 | goto out; | |
1460 | } | |
aac00a8d | 1461 | ret = -EAGAIN; |
34310430 TM |
1462 | |
1463 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1464 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1465 | goto out_return_state; |
aac00a8d | 1466 | } |
aac00a8d TM |
1467 | out: |
1468 | return ERR_PTR(ret); | |
1469 | out_return_state: | |
1470 | atomic_inc(&state->count); | |
1471 | return state; | |
1472 | } | |
1473 | ||
e23008ec AA |
1474 | static void |
1475 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1476 | { | |
1477 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1478 | struct nfs_delegation *delegation; | |
1479 | int delegation_flags = 0; | |
1480 | ||
1481 | rcu_read_lock(); | |
1482 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1483 | if (delegation) | |
1484 | delegation_flags = delegation->flags; | |
1485 | rcu_read_unlock(); | |
72d79ff8 TM |
1486 | switch (data->o_arg.claim) { |
1487 | default: | |
1488 | break; | |
1489 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1490 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1491 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1492 | "returning a delegation for " | |
1493 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1494 | clp->cl_hostname); | |
72d79ff8 TM |
1495 | return; |
1496 | } | |
1497 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec AA |
1498 | nfs_inode_set_delegation(state->inode, |
1499 | data->owner->so_cred, | |
1500 | &data->o_res); | |
1501 | else | |
1502 | nfs_inode_reclaim_delegation(state->inode, | |
1503 | data->owner->so_cred, | |
1504 | &data->o_res); | |
1505 | } | |
1506 | ||
1507 | /* | |
1508 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1509 | * and update the nfs4_state. | |
1510 | */ | |
1511 | static struct nfs4_state * | |
1512 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1513 | { | |
1514 | struct inode *inode = data->state->inode; | |
1515 | struct nfs4_state *state = data->state; | |
1516 | int ret; | |
1517 | ||
d2bfda2e WAA |
1518 | if (!data->rpc_done) { |
1519 | if (data->rpc_status) { | |
1520 | ret = data->rpc_status; | |
1521 | goto err; | |
1522 | } | |
1523 | /* cached opens have already been processed */ | |
1524 | goto update; | |
e23008ec AA |
1525 | } |
1526 | ||
e23008ec AA |
1527 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1528 | if (ret) | |
1529 | goto err; | |
1530 | ||
1531 | if (data->o_res.delegation_type != 0) | |
1532 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1533 | update: |
e23008ec AA |
1534 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1535 | data->o_arg.fmode); | |
d49f042a | 1536 | atomic_inc(&state->count); |
e23008ec AA |
1537 | |
1538 | return state; | |
1539 | err: | |
1540 | return ERR_PTR(ret); | |
1541 | ||
1542 | } | |
1543 | ||
1544 | static struct nfs4_state * | |
1545 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1546 | { |
1547 | struct inode *inode; | |
1548 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1549 | int ret; |
24ac23ab | 1550 | |
aac00a8d | 1551 | if (!data->rpc_done) { |
6ee41268 | 1552 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1553 | goto out; |
1554 | } | |
1555 | ||
1b370bc2 | 1556 | ret = -EAGAIN; |
24ac23ab | 1557 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1558 | goto err; |
1775fd3e | 1559 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1560 | ret = PTR_ERR(inode); |
03f28e3a | 1561 | if (IS_ERR(inode)) |
1b370bc2 TM |
1562 | goto err; |
1563 | ret = -ENOMEM; | |
24ac23ab TM |
1564 | state = nfs4_get_open_state(inode, data->owner); |
1565 | if (state == NULL) | |
1b370bc2 | 1566 | goto err_put_inode; |
e23008ec AA |
1567 | if (data->o_res.delegation_type != 0) |
1568 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1569 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1570 | data->o_arg.fmode); |
24ac23ab | 1571 | iput(inode); |
aac00a8d | 1572 | out: |
7aa262b5 | 1573 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1574 | return state; |
1b370bc2 TM |
1575 | err_put_inode: |
1576 | iput(inode); | |
1577 | err: | |
1578 | return ERR_PTR(ret); | |
24ac23ab TM |
1579 | } |
1580 | ||
e23008ec AA |
1581 | static struct nfs4_state * |
1582 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1583 | { | |
1584 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1585 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1586 | return _nfs4_opendata_to_nfs4_state(data); | |
1587 | } | |
1588 | ||
864472e9 TM |
1589 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1590 | { | |
1591 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1592 | struct nfs_open_context *ctx; | |
1593 | ||
1594 | spin_lock(&state->inode->i_lock); | |
1595 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1596 | if (ctx->state != state) | |
1597 | continue; | |
1598 | get_nfs_open_context(ctx); | |
1599 | spin_unlock(&state->inode->i_lock); | |
1600 | return ctx; | |
1601 | } | |
1602 | spin_unlock(&state->inode->i_lock); | |
1603 | return ERR_PTR(-ENOENT); | |
1604 | } | |
1605 | ||
4a1c0893 TM |
1606 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1607 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1608 | { |
1609 | struct nfs4_opendata *opendata; | |
1610 | ||
4a1c0893 | 1611 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1612 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1613 | if (opendata == NULL) |
1614 | return ERR_PTR(-ENOMEM); | |
1615 | opendata->state = state; | |
1616 | atomic_inc(&state->count); | |
1617 | return opendata; | |
1618 | } | |
1619 | ||
24311f88 TM |
1620 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
1621 | fmode_t fmode) | |
864472e9 | 1622 | { |
2ced46c2 | 1623 | struct nfs4_state *newstate; |
864472e9 TM |
1624 | int ret; |
1625 | ||
24311f88 | 1626 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 1627 | return 0; |
dc0b027d TM |
1628 | opendata->o_arg.open_flags = 0; |
1629 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1630 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1631 | NFS_SB(opendata->dentry->d_sb), | |
1632 | fmode, 0); | |
2ced46c2 TM |
1633 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1634 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1635 | nfs4_init_opendata_res(opendata); | |
b257957e | 1636 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1637 | if (ret != 0) |
1638 | return ret; | |
2ced46c2 | 1639 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1640 | if (IS_ERR(newstate)) |
1641 | return PTR_ERR(newstate); | |
24311f88 TM |
1642 | if (newstate != opendata->state) |
1643 | ret = -ESTALE; | |
643168c2 | 1644 | nfs4_close_state(newstate, fmode); |
24311f88 | 1645 | return ret; |
864472e9 TM |
1646 | } |
1647 | ||
1648 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1649 | { | |
864472e9 TM |
1650 | int ret; |
1651 | ||
4f14c194 TM |
1652 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1653 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1654 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1655 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1656 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1657 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1658 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 | 1659 | smp_rmb(); |
24311f88 TM |
1660 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
1661 | if (ret != 0) | |
1662 | return ret; | |
1663 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1664 | if (ret != 0) | |
1665 | return ret; | |
1666 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1667 | if (ret != 0) | |
1668 | return ret; | |
1ac7e2fd TM |
1669 | /* |
1670 | * We may have performed cached opens for all three recoveries. | |
1671 | * Check if we need to update the current stateid. | |
1672 | */ | |
1673 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1674 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1675 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1676 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1677 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1678 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1679 | } |
864472e9 TM |
1680 | return 0; |
1681 | } | |
1682 | ||
1da177e4 LT |
1683 | /* |
1684 | * OPEN_RECLAIM: | |
1685 | * reclaim state on the server after a reboot. | |
1da177e4 | 1686 | */ |
539cd03a | 1687 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1688 | { |
1ac7e2fd | 1689 | struct nfs_delegation *delegation; |
864472e9 | 1690 | struct nfs4_opendata *opendata; |
dc0b027d | 1691 | fmode_t delegation_type = 0; |
1da177e4 LT |
1692 | int status; |
1693 | ||
4a1c0893 TM |
1694 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1695 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1696 | if (IS_ERR(opendata)) |
1697 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1698 | rcu_read_lock(); |
1699 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1700 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1701 | delegation_type = delegation->type; |
1ac7e2fd | 1702 | rcu_read_unlock(); |
864472e9 TM |
1703 | opendata->o_arg.u.delegation_type = delegation_type; |
1704 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1705 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1706 | return status; |
1707 | } | |
1708 | ||
539cd03a | 1709 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1710 | { |
1711 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1712 | struct nfs4_exception exception = { }; | |
1713 | int err; | |
1714 | do { | |
539cd03a | 1715 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1716 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1717 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1718 | continue; | |
168667c4 | 1719 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1720 | break; |
1721 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1722 | } while (exception.retry); |
1723 | return err; | |
1724 | } | |
1725 | ||
864472e9 TM |
1726 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1727 | { | |
1728 | struct nfs_open_context *ctx; | |
1729 | int ret; | |
1730 | ||
1731 | ctx = nfs4_state_find_open_context(state); | |
1732 | if (IS_ERR(ctx)) | |
91876b13 | 1733 | return -EAGAIN; |
539cd03a | 1734 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1735 | put_nfs_open_context(ctx); |
1736 | return ret; | |
1737 | } | |
1738 | ||
db4f2e63 | 1739 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1740 | { |
be76b5b6 TM |
1741 | switch (err) { |
1742 | default: | |
1743 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1744 | "%d.\n", __func__, err); | |
1745 | case 0: | |
1746 | case -ENOENT: | |
8eee52af | 1747 | case -EAGAIN: |
be76b5b6 TM |
1748 | case -ESTALE: |
1749 | break; | |
1750 | case -NFS4ERR_BADSESSION: | |
1751 | case -NFS4ERR_BADSLOT: | |
1752 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1753 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1754 | case -NFS4ERR_DEADSESSION: | |
1755 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1756 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1757 | return -EAGAIN; | |
1758 | case -NFS4ERR_STALE_CLIENTID: | |
1759 | case -NFS4ERR_STALE_STATEID: | |
1760 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1761 | case -NFS4ERR_EXPIRED: | |
1762 | /* Don't recall a delegation if it was lost */ | |
1763 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1764 | return -EAGAIN; | |
352297b9 CL |
1765 | case -NFS4ERR_MOVED: |
1766 | nfs4_schedule_migration_recovery(server); | |
1767 | return -EAGAIN; | |
8ef2f8d4 CL |
1768 | case -NFS4ERR_LEASE_MOVED: |
1769 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1770 | return -EAGAIN; | |
be76b5b6 TM |
1771 | case -NFS4ERR_DELEG_REVOKED: |
1772 | case -NFS4ERR_ADMIN_REVOKED: | |
1773 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1774 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1775 | nfs_inode_find_state_and_recover(state->inode, |
1776 | stateid); | |
1777 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1778 | return -EAGAIN; |
be76b5b6 TM |
1779 | case -NFS4ERR_DELAY: |
1780 | case -NFS4ERR_GRACE: | |
1781 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1782 | ssleep(1); | |
1783 | return -EAGAIN; | |
db4f2e63 TM |
1784 | case -ENOMEM: |
1785 | case -NFS4ERR_DENIED: | |
1786 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1787 | return 0; | |
be76b5b6 | 1788 | } |
1da177e4 LT |
1789 | return err; |
1790 | } | |
1791 | ||
24311f88 TM |
1792 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
1793 | struct nfs4_state *state, const nfs4_stateid *stateid, | |
1794 | fmode_t type) | |
db4f2e63 TM |
1795 | { |
1796 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1797 | struct nfs4_opendata *opendata; | |
24311f88 | 1798 | int err = 0; |
db4f2e63 TM |
1799 | |
1800 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1801 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1802 | if (IS_ERR(opendata)) | |
1803 | return PTR_ERR(opendata); | |
1804 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5e99b532 JL |
1805 | write_seqlock(&state->seqlock); |
1806 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1807 | write_sequnlock(&state->seqlock); | |
24311f88 TM |
1808 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1809 | switch (type & (FMODE_READ|FMODE_WRITE)) { | |
1810 | case FMODE_READ|FMODE_WRITE: | |
1811 | case FMODE_WRITE: | |
1812 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); | |
1813 | if (err) | |
1814 | break; | |
1815 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1816 | if (err) | |
1817 | break; | |
1818 | case FMODE_READ: | |
1819 | err = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1820 | } | |
db4f2e63 TM |
1821 | nfs4_opendata_put(opendata); |
1822 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1823 | } | |
1824 | ||
be05c860 CL |
1825 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1826 | { | |
1827 | struct nfs4_opendata *data = calldata; | |
1828 | ||
cb04ad2a PT |
1829 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1830 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1831 | } |
1832 | ||
cdd4e68b TM |
1833 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1834 | { | |
1835 | struct nfs4_opendata *data = calldata; | |
1836 | ||
17ead6c8 | 1837 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1838 | |
cdd4e68b | 1839 | data->rpc_status = task->tk_status; |
26e976a8 | 1840 | if (data->rpc_status == 0) { |
f597c537 | 1841 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1842 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1843 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1844 | data->rpc_done = 1; |
26e976a8 | 1845 | } |
cdd4e68b TM |
1846 | } |
1847 | ||
1848 | static void nfs4_open_confirm_release(void *calldata) | |
1849 | { | |
1850 | struct nfs4_opendata *data = calldata; | |
1851 | struct nfs4_state *state = NULL; | |
1852 | ||
1853 | /* If this request hasn't been cancelled, do nothing */ | |
1854 | if (data->cancelled == 0) | |
1855 | goto out_free; | |
1856 | /* In case of error, no cleanup! */ | |
3e309914 | 1857 | if (!data->rpc_done) |
cdd4e68b | 1858 | goto out_free; |
cdd4e68b | 1859 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1860 | if (!IS_ERR(state)) |
643168c2 | 1861 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1862 | out_free: |
c6d00e63 | 1863 | nfs4_opendata_put(data); |
cdd4e68b TM |
1864 | } |
1865 | ||
1866 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1867 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1868 | .rpc_call_done = nfs4_open_confirm_done, |
1869 | .rpc_release = nfs4_open_confirm_release, | |
1870 | }; | |
1871 | ||
1872 | /* | |
1873 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1874 | */ | |
1875 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1876 | { | |
2b0143b5 | 1877 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1878 | struct rpc_task *task; |
5138fde0 TM |
1879 | struct rpc_message msg = { |
1880 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1881 | .rpc_argp = &data->c_arg, | |
1882 | .rpc_resp = &data->c_res, | |
1883 | .rpc_cred = data->owner->so_cred, | |
1884 | }; | |
c970aa85 TM |
1885 | struct rpc_task_setup task_setup_data = { |
1886 | .rpc_client = server->client, | |
5138fde0 | 1887 | .rpc_message = &msg, |
c970aa85 TM |
1888 | .callback_ops = &nfs4_open_confirm_ops, |
1889 | .callback_data = data, | |
101070ca | 1890 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1891 | .flags = RPC_TASK_ASYNC, |
1892 | }; | |
1da177e4 LT |
1893 | int status; |
1894 | ||
17ead6c8 | 1895 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1896 | kref_get(&data->kref); |
3e309914 TM |
1897 | data->rpc_done = 0; |
1898 | data->rpc_status = 0; | |
5138fde0 | 1899 | data->timestamp = jiffies; |
e92c1e0d BC |
1900 | if (data->is_recover) |
1901 | nfs4_set_sequence_privileged(&data->c_arg.seq_args); | |
c970aa85 | 1902 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1903 | if (IS_ERR(task)) |
cdd4e68b | 1904 | return PTR_ERR(task); |
cdd4e68b TM |
1905 | status = nfs4_wait_for_completion_rpc_task(task); |
1906 | if (status != 0) { | |
1907 | data->cancelled = 1; | |
1908 | smp_wmb(); | |
1909 | } else | |
1910 | status = data->rpc_status; | |
e6b3c4db | 1911 | rpc_put_task(task); |
1da177e4 LT |
1912 | return status; |
1913 | } | |
1914 | ||
24ac23ab | 1915 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1916 | { |
24ac23ab TM |
1917 | struct nfs4_opendata *data = calldata; |
1918 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1919 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 1920 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 1921 | |
24ac23ab | 1922 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1923 | goto out_wait; |
aac00a8d TM |
1924 | /* |
1925 | * Check if we still need to send an OPEN call, or if we can use | |
1926 | * a delegation instead. | |
1927 | */ | |
1928 | if (data->state != NULL) { | |
1929 | struct nfs_delegation *delegation; | |
1930 | ||
dc0b027d | 1931 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1932 | goto out_no_action; |
aac00a8d TM |
1933 | rcu_read_lock(); |
1934 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 1935 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 1936 | goto unlock_no_action; |
aac00a8d TM |
1937 | rcu_read_unlock(); |
1938 | } | |
95b72eb0 | 1939 | /* Update client id. */ |
549b19cc | 1940 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
1941 | switch (claim) { |
1942 | default: | |
1943 | break; | |
8188df17 TM |
1944 | case NFS4_OPEN_CLAIM_PREVIOUS: |
1945 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1946 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1947 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1948 | case NFS4_OPEN_CLAIM_FH: |
1949 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1950 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1951 | } | |
26e976a8 | 1952 | data->timestamp = jiffies; |
035168ab | 1953 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1954 | &data->o_arg.seq_args, |
2240a9e2 TM |
1955 | &data->o_res.seq_res, |
1956 | task) != 0) | |
1957 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1958 | |
1959 | /* Set the create mode (note dependency on the session type) */ | |
1960 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1961 | if (data->o_arg.open_flags & O_EXCL) { | |
1962 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1963 | if (nfs4_has_persistent_session(clp)) | |
1964 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1965 | else if (clp->cl_mvops->minor_version > 0) | |
1966 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1967 | } | |
6ee41268 | 1968 | return; |
652f89f6 TM |
1969 | unlock_no_action: |
1970 | rcu_read_unlock(); | |
6ee41268 TM |
1971 | out_no_action: |
1972 | task->tk_action = NULL; | |
c8da19b9 | 1973 | out_wait: |
b75ad4cd | 1974 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1975 | } |
1976 | ||
24ac23ab TM |
1977 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1978 | { | |
1979 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1980 | |
24ac23ab | 1981 | data->rpc_status = task->tk_status; |
d898528c | 1982 | |
14516c3a TM |
1983 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1984 | return; | |
d898528c | 1985 | |
24ac23ab | 1986 | if (task->tk_status == 0) { |
807d66d8 TM |
1987 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1988 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1989 | case S_IFREG: |
1990 | break; | |
1991 | case S_IFLNK: | |
24ac23ab | 1992 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1993 | break; |
1994 | case S_IFDIR: | |
24ac23ab | 1995 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1996 | break; |
1997 | default: | |
24ac23ab | 1998 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1999 | } |
6f926b5b | 2000 | } |
26e976a8 | 2001 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2002 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2003 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2004 | } |
3e309914 | 2005 | data->rpc_done = 1; |
24ac23ab | 2006 | } |
6f926b5b | 2007 | |
24ac23ab TM |
2008 | static void nfs4_open_release(void *calldata) |
2009 | { | |
2010 | struct nfs4_opendata *data = calldata; | |
2011 | struct nfs4_state *state = NULL; | |
2012 | ||
2013 | /* If this request hasn't been cancelled, do nothing */ | |
2014 | if (data->cancelled == 0) | |
2015 | goto out_free; | |
2016 | /* In case of error, no cleanup! */ | |
3e309914 | 2017 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2018 | goto out_free; |
2019 | /* In case we need an open_confirm, no cleanup! */ | |
2020 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2021 | goto out_free; | |
24ac23ab | 2022 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2023 | if (!IS_ERR(state)) |
643168c2 | 2024 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2025 | out_free: |
c6d00e63 | 2026 | nfs4_opendata_put(data); |
24ac23ab TM |
2027 | } |
2028 | ||
2029 | static const struct rpc_call_ops nfs4_open_ops = { | |
2030 | .rpc_call_prepare = nfs4_open_prepare, | |
2031 | .rpc_call_done = nfs4_open_done, | |
2032 | .rpc_release = nfs4_open_release, | |
2033 | }; | |
2034 | ||
b257957e | 2035 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 2036 | { |
2b0143b5 | 2037 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2038 | struct nfs_server *server = NFS_SERVER(dir); |
2039 | struct nfs_openargs *o_arg = &data->o_arg; | |
2040 | struct nfs_openres *o_res = &data->o_res; | |
2041 | struct rpc_task *task; | |
5138fde0 TM |
2042 | struct rpc_message msg = { |
2043 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2044 | .rpc_argp = o_arg, | |
2045 | .rpc_resp = o_res, | |
2046 | .rpc_cred = data->owner->so_cred, | |
2047 | }; | |
c970aa85 TM |
2048 | struct rpc_task_setup task_setup_data = { |
2049 | .rpc_client = server->client, | |
5138fde0 | 2050 | .rpc_message = &msg, |
c970aa85 TM |
2051 | .callback_ops = &nfs4_open_ops, |
2052 | .callback_data = data, | |
101070ca | 2053 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2054 | .flags = RPC_TASK_ASYNC, |
2055 | }; | |
24ac23ab TM |
2056 | int status; |
2057 | ||
a9c92d6b | 2058 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2059 | kref_get(&data->kref); |
3e309914 TM |
2060 | data->rpc_done = 0; |
2061 | data->rpc_status = 0; | |
2ced46c2 | 2062 | data->cancelled = 0; |
bdeca1b7 TM |
2063 | data->is_recover = 0; |
2064 | if (isrecover) { | |
8fe72bac | 2065 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2066 | data->is_recover = 1; |
2067 | } | |
c970aa85 | 2068 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2069 | if (IS_ERR(task)) |
2070 | return PTR_ERR(task); | |
2071 | status = nfs4_wait_for_completion_rpc_task(task); | |
2072 | if (status != 0) { | |
2073 | data->cancelled = 1; | |
2074 | smp_wmb(); | |
2075 | } else | |
2076 | status = data->rpc_status; | |
2077 | rpc_put_task(task); | |
2078 | ||
2079 | return status; | |
2080 | } | |
2081 | ||
2082 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2083 | { | |
2b0143b5 | 2084 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2085 | struct nfs_openres *o_res = &data->o_res; |
2086 | int status; | |
2087 | ||
2088 | status = nfs4_run_open_task(data, 1); | |
2089 | if (status != 0 || !data->rpc_done) | |
2090 | return status; | |
2091 | ||
6926afd1 TM |
2092 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2093 | ||
b257957e AB |
2094 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2095 | status = _nfs4_proc_open_confirm(data); | |
2096 | if (status != 0) | |
2097 | return status; | |
2098 | } | |
2099 | ||
2100 | return status; | |
2101 | } | |
2102 | ||
f3792d63 TM |
2103 | /* |
2104 | * Additional permission checks in order to distinguish between an | |
2105 | * open for read, and an open for execute. This works around the | |
2106 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2107 | * the same. | |
2108 | * Note that in the non-execute case, we want to turn off permission | |
2109 | * checking if we just created a new file (POSIX open() semantics). | |
2110 | */ | |
6168f62c WAA |
2111 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2112 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2113 | struct nfs4_state *state, fmode_t fmode, |
2114 | int openflags) | |
6168f62c WAA |
2115 | { |
2116 | struct nfs_access_entry cache; | |
2117 | u32 mask; | |
2118 | ||
2119 | /* access call failed or for some reason the server doesn't | |
2120 | * support any access modes -- defer access call until later */ | |
2121 | if (opendata->o_res.access_supported == 0) | |
2122 | return 0; | |
2123 | ||
2124 | mask = 0; | |
f3792d63 TM |
2125 | /* |
2126 | * Use openflags to check for exec, because fmode won't | |
2127 | * always have FMODE_EXEC set when file open for exec. | |
2128 | */ | |
f8d9a897 WAA |
2129 | if (openflags & __FMODE_EXEC) { |
2130 | /* ONLY check for exec rights */ | |
2131 | mask = MAY_EXEC; | |
f3792d63 | 2132 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2133 | mask = MAY_READ; |
6168f62c WAA |
2134 | |
2135 | cache.cred = cred; | |
2136 | cache.jiffies = jiffies; | |
2137 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2138 | nfs_access_add_cache(state->inode, &cache); | |
2139 | ||
bbd3a8ee | 2140 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2141 | return 0; |
2142 | ||
2143 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2144 | nfs4_close_state(state, fmode); | |
998f40b5 | 2145 | return -EACCES; |
6168f62c WAA |
2146 | } |
2147 | ||
b257957e AB |
2148 | /* |
2149 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2150 | */ | |
2151 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2152 | { | |
2b0143b5 | 2153 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2154 | struct nfs_server *server = NFS_SERVER(dir); |
2155 | struct nfs_openargs *o_arg = &data->o_arg; | |
2156 | struct nfs_openres *o_res = &data->o_res; | |
2157 | int status; | |
2158 | ||
2159 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2160 | if (!data->rpc_done) |
2161 | return status; | |
2162 | if (status != 0) { | |
2163 | if (status == -NFS4ERR_BADNAME && | |
2164 | !(o_arg->open_flags & O_CREAT)) | |
2165 | return -ENOENT; | |
24ac23ab | 2166 | return status; |
08ef7bd3 | 2167 | } |
24ac23ab | 2168 | |
6926afd1 TM |
2169 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2170 | ||
5bc2afc2 | 2171 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2172 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2173 | if (o_arg->open_flags & O_EXCL) |
2174 | data->file_created = 1; | |
2175 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2176 | data->file_created = 1; | |
2177 | } | |
0df5dd4a TM |
2178 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2179 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2180 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2181 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2182 | if (status != 0) |
24ac23ab | 2183 | return status; |
1da177e4 LT |
2184 | } |
2185 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2186 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2187 | return 0; |
1da177e4 LT |
2188 | } |
2189 | ||
d83217c1 AA |
2190 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2191 | { | |
2192 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2193 | } | |
2194 | ||
1da177e4 LT |
2195 | /* |
2196 | * OPEN_EXPIRED: | |
2197 | * reclaim state on the server after a network partition. | |
2198 | * Assumes caller holds the appropriate lock | |
2199 | */ | |
539cd03a | 2200 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2201 | { |
e56e0b78 | 2202 | struct nfs4_opendata *opendata; |
864472e9 | 2203 | int ret; |
1da177e4 | 2204 | |
4a1c0893 | 2205 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2206 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2207 | if (IS_ERR(opendata)) |
2208 | return PTR_ERR(opendata); | |
864472e9 | 2209 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2210 | if (ret == -ESTALE) |
3d4ff43d | 2211 | d_drop(ctx->dentry); |
c6d00e63 | 2212 | nfs4_opendata_put(opendata); |
864472e9 | 2213 | return ret; |
1da177e4 LT |
2214 | } |
2215 | ||
a9ed2e25 | 2216 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2217 | { |
539cd03a | 2218 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2219 | struct nfs4_exception exception = { }; |
2220 | int err; | |
2221 | ||
2222 | do { | |
539cd03a | 2223 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2224 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2225 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2226 | continue; | |
a9ed2e25 TM |
2227 | switch (err) { |
2228 | default: | |
2229 | goto out; | |
2230 | case -NFS4ERR_GRACE: | |
2231 | case -NFS4ERR_DELAY: | |
2232 | nfs4_handle_exception(server, err, &exception); | |
2233 | err = 0; | |
2234 | } | |
202b50dc | 2235 | } while (exception.retry); |
a9ed2e25 | 2236 | out: |
202b50dc TM |
2237 | return err; |
2238 | } | |
2239 | ||
1da177e4 LT |
2240 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2241 | { | |
1da177e4 | 2242 | struct nfs_open_context *ctx; |
864472e9 | 2243 | int ret; |
1da177e4 | 2244 | |
864472e9 TM |
2245 | ctx = nfs4_state_find_open_context(state); |
2246 | if (IS_ERR(ctx)) | |
91876b13 | 2247 | return -EAGAIN; |
539cd03a | 2248 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2249 | put_nfs_open_context(ctx); |
2250 | return ret; | |
1da177e4 LT |
2251 | } |
2252 | ||
4dfd4f7a TM |
2253 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2254 | { | |
2255 | nfs_remove_bad_delegation(state->inode); | |
2256 | write_seqlock(&state->seqlock); | |
2257 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2258 | write_sequnlock(&state->seqlock); | |
2259 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2260 | } | |
2261 | ||
2262 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2263 | { | |
2264 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2265 | nfs_finish_clear_delegation_stateid(state); | |
2266 | } | |
2267 | ||
2268 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2269 | { | |
2270 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2271 | nfs40_clear_delegation_stateid(state); | |
2272 | return nfs4_open_expired(sp, state); | |
2273 | } | |
2274 | ||
f062eb6c | 2275 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2276 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2277 | { |
f062eb6c | 2278 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2279 | nfs4_stateid stateid; |
ab7cb0df | 2280 | struct nfs_delegation *delegation; |
0c116cad TM |
2281 | struct rpc_cred *cred; |
2282 | int status; | |
3e60ffdd | 2283 | |
ab7cb0df TM |
2284 | /* Get the delegation credential for use by test/free_stateid */ |
2285 | rcu_read_lock(); | |
2286 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2287 | if (delegation == NULL) { |
ab7cb0df | 2288 | rcu_read_unlock(); |
0c116cad TM |
2289 | return; |
2290 | } | |
2291 | ||
2292 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2293 | cred = get_rpccred(delegation->cred); | |
2294 | rcu_read_unlock(); | |
2295 | status = nfs41_test_stateid(server, &stateid, cred); | |
2296 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2297 | |
3e60ffdd CL |
2298 | if (status != NFS_OK) { |
2299 | /* Free the stateid unless the server explicitly | |
2300 | * informs us the stateid is unrecognized. */ | |
2301 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2302 | nfs41_free_stateid(server, &stateid, cred); |
2303 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2304 | } |
ab7cb0df | 2305 | |
0c116cad | 2306 | put_rpccred(cred); |
3e60ffdd CL |
2307 | } |
2308 | ||
2309 | /** | |
2310 | * nfs41_check_open_stateid - possibly free an open stateid | |
2311 | * | |
2312 | * @state: NFSv4 state for an inode | |
2313 | * | |
2314 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2315 | * Otherwise a negative NFS4ERR value is returned. | |
2316 | */ | |
2317 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2318 | { | |
2319 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2320 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2321 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2322 | int status; |
2323 | ||
2324 | /* If a state reset has been done, test_stateid is unneeded */ | |
2325 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2326 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2327 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2328 | return -NFS4ERR_BAD_STATEID; | |
2329 | ||
ab7cb0df | 2330 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2331 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2332 | if (status != NFS_OK) { |
2333 | /* Free the stateid unless the server explicitly | |
2334 | * informs us the stateid is unrecognized. */ | |
2335 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2336 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2337 | |
2338 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2339 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2340 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2341 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2342 | } |
2343 | return status; | |
2344 | } | |
2345 | ||
2346 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2347 | { | |
eb64cf96 | 2348 | int status; |
b01dd1d8 | 2349 | |
0c116cad | 2350 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2351 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2352 | if (status != NFS_OK) |
2353 | status = nfs4_open_expired(sp, state); | |
2354 | return status; | |
f062eb6c BS |
2355 | } |
2356 | #endif | |
2357 | ||
aa53ed54 JL |
2358 | /* |
2359 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2360 | * fields corresponding to attributes that were used to store the verifier. | |
2361 | * Make sure we clobber those fields in the later setattr call | |
2362 | */ | |
5334c5bd KM |
2363 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2364 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2365 | { |
5334c5bd KM |
2366 | const u32 *attrset = opendata->o_res.attrset; |
2367 | ||
2368 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2369 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2370 | sattr->ia_valid |= ATTR_ATIME; | |
2371 | ||
5334c5bd | 2372 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2373 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2374 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2375 | |
2376 | /* Except MODE, it seems harmless of setting twice. */ | |
2377 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2378 | sattr->ia_valid &= ~ATTR_MODE; | |
2379 | ||
2380 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2381 | *label = NULL; | |
aa53ed54 JL |
2382 | } |
2383 | ||
c21443c2 TM |
2384 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2385 | fmode_t fmode, | |
2386 | int flags, | |
3efb9722 | 2387 | struct nfs_open_context *ctx) |
c21443c2 TM |
2388 | { |
2389 | struct nfs4_state_owner *sp = opendata->owner; | |
2390 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2391 | struct dentry *dentry; |
c21443c2 TM |
2392 | struct nfs4_state *state; |
2393 | unsigned int seq; | |
2394 | int ret; | |
2395 | ||
2396 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2397 | ||
2398 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2399 | if (ret != 0) |
c21443c2 TM |
2400 | goto out; |
2401 | ||
2402 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2403 | ret = PTR_ERR(state); | |
2404 | if (IS_ERR(state)) | |
2405 | goto out; | |
2406 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2407 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2408 | ||
275bb307 | 2409 | dentry = opendata->dentry; |
2b0143b5 | 2410 | if (d_really_is_negative(dentry)) { |
275bb307 TM |
2411 | /* FIXME: Is this d_drop() ever needed? */ |
2412 | d_drop(dentry); | |
2413 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2414 | if (dentry == NULL) { | |
2415 | dentry = opendata->dentry; | |
2416 | } else if (dentry != ctx->dentry) { | |
2417 | dput(ctx->dentry); | |
2418 | ctx->dentry = dget(dentry); | |
2419 | } | |
2420 | nfs_set_verifier(dentry, | |
2b0143b5 | 2421 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2422 | } |
2423 | ||
c21443c2 TM |
2424 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2425 | if (ret != 0) | |
2426 | goto out; | |
2427 | ||
3efb9722 | 2428 | ctx->state = state; |
2b0143b5 | 2429 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2430 | nfs_inode_attach_open_context(ctx); |
2431 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2432 | nfs4_schedule_stateid_recovery(server, state); | |
2433 | } | |
c21443c2 TM |
2434 | out: |
2435 | return ret; | |
2436 | } | |
2437 | ||
1da177e4 | 2438 | /* |
24ac23ab | 2439 | * Returns a referenced nfs4_state |
1da177e4 | 2440 | */ |
82be417a | 2441 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2442 | struct nfs_open_context *ctx, |
82be417a AA |
2443 | int flags, |
2444 | struct iattr *sattr, | |
5bc2afc2 TM |
2445 | struct nfs4_label *label, |
2446 | int *opened) | |
1da177e4 LT |
2447 | { |
2448 | struct nfs4_state_owner *sp; | |
2449 | struct nfs4_state *state = NULL; | |
2450 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2451 | struct nfs4_opendata *opendata; |
4197a055 TM |
2452 | struct dentry *dentry = ctx->dentry; |
2453 | struct rpc_cred *cred = ctx->cred; | |
2454 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2455 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2456 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2457 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2458 | int status; |
1da177e4 LT |
2459 | |
2460 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2461 | status = -ENOMEM; |
d1e284d5 TM |
2462 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2463 | if (sp == NULL) { | |
1da177e4 LT |
2464 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2465 | goto out_err; | |
2466 | } | |
58d9714a TM |
2467 | status = nfs4_recover_expired_lease(server); |
2468 | if (status != 0) | |
b4454fe1 | 2469 | goto err_put_state_owner; |
2b0143b5 DH |
2470 | if (d_really_is_positive(dentry)) |
2471 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2472 | status = -ENOMEM; |
2b0143b5 | 2473 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2474 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2475 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2476 | label, claim, GFP_KERNEL); |
e56e0b78 | 2477 | if (opendata == NULL) |
95d35cb4 | 2478 | goto err_put_state_owner; |
1da177e4 | 2479 | |
14c43f76 DQ |
2480 | if (label) { |
2481 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2482 | if (IS_ERR(olabel)) { | |
2483 | status = PTR_ERR(olabel); | |
2484 | goto err_opendata_put; | |
2485 | } | |
2486 | } | |
2487 | ||
e911b815 TM |
2488 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2489 | if (!opendata->f_attr.mdsthreshold) { | |
2490 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2491 | if (!opendata->f_attr.mdsthreshold) | |
2492 | goto err_free_label; | |
2493 | } | |
1549210f | 2494 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2495 | } |
2b0143b5 DH |
2496 | if (d_really_is_positive(dentry)) |
2497 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2498 | |
3efb9722 | 2499 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2500 | if (status != 0) |
14c43f76 | 2501 | goto err_free_label; |
3efb9722 | 2502 | state = ctx->state; |
6168f62c | 2503 | |
efcbc04e | 2504 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2505 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2506 | nfs4_exclusive_attrset(opendata, sattr, &label); |
0ab64e0e TM |
2507 | |
2508 | nfs_fattr_init(opendata->o_res.f_attr); | |
2509 | status = nfs4_do_setattr(state->inode, cred, | |
2510 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2511 | state, label, olabel); |
2512 | if (status == 0) { | |
f044636d TM |
2513 | nfs_setattr_update_inode(state->inode, sattr, |
2514 | opendata->o_res.f_attr); | |
aa9c2669 | 2515 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2516 | } |
0ab64e0e | 2517 | } |
c5c3fb5f | 2518 | if (opened && opendata->file_created) |
5bc2afc2 | 2519 | *opened |= FILE_CREATED; |
82be417a | 2520 | |
e911b815 | 2521 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2522 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2523 | opendata->f_attr.mdsthreshold = NULL; |
2524 | } | |
82be417a | 2525 | |
14c43f76 DQ |
2526 | nfs4_label_free(olabel); |
2527 | ||
c6d00e63 | 2528 | nfs4_opendata_put(opendata); |
1da177e4 | 2529 | nfs4_put_state_owner(sp); |
1da177e4 | 2530 | return 0; |
14c43f76 DQ |
2531 | err_free_label: |
2532 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2533 | err_opendata_put: |
2534 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2535 | err_put_state_owner: |
2536 | nfs4_put_state_owner(sp); | |
1da177e4 | 2537 | out_err: |
1da177e4 LT |
2538 | return status; |
2539 | } | |
2540 | ||
2541 | ||
82be417a | 2542 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2543 | struct nfs_open_context *ctx, |
82be417a AA |
2544 | int flags, |
2545 | struct iattr *sattr, | |
5bc2afc2 TM |
2546 | struct nfs4_label *label, |
2547 | int *opened) | |
1da177e4 | 2548 | { |
49f9a0fa | 2549 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2550 | struct nfs4_exception exception = { }; |
2551 | struct nfs4_state *res; | |
2552 | int status; | |
2553 | ||
2554 | do { | |
5bc2afc2 | 2555 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2556 | res = ctx->state; |
42113a75 | 2557 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2558 | if (status == 0) |
2559 | break; | |
2560 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2561 | * book-keeping w.r.t. state-changing operations | |
2562 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2563 | * It is actually a sign of a bug on the client or on the server. | |
2564 | * | |
2565 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2566 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2567 | * have unhashed the old state_owner for us, and that we can |
2568 | * therefore safely retry using a new one. We should still warn | |
2569 | * the user though... | |
2570 | */ | |
2571 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2572 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2573 | " returned a bad sequence-id error!\n", |
2574 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2575 | exception.retry = 1; |
2576 | continue; | |
2577 | } | |
550f5747 TM |
2578 | /* |
2579 | * BAD_STATEID on OPEN means that the server cancelled our | |
2580 | * state before it received the OPEN_CONFIRM. | |
2581 | * Recover by retrying the request as per the discussion | |
2582 | * on Page 181 of RFC3530. | |
2583 | */ | |
2584 | if (status == -NFS4ERR_BAD_STATEID) { | |
2585 | exception.retry = 1; | |
2586 | continue; | |
2587 | } | |
aac00a8d TM |
2588 | if (status == -EAGAIN) { |
2589 | /* We must have found a delegation */ | |
2590 | exception.retry = 1; | |
2591 | continue; | |
2592 | } | |
49f9a0fa TM |
2593 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2594 | continue; | |
2595 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2596 | status, &exception)); |
2597 | } while (exception.retry); | |
2598 | return res; | |
2599 | } | |
2600 | ||
659bfcd6 TM |
2601 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2602 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2603 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2604 | struct nfs4_label *olabel) | |
1da177e4 | 2605 | { |
3e4f6290 | 2606 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2607 | struct nfs_setattrargs arg = { |
3e4f6290 | 2608 | .fh = NFS_FH(inode), |
1da177e4 LT |
2609 | .iap = sattr, |
2610 | .server = server, | |
2611 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2612 | .label = ilabel, |
1da177e4 LT |
2613 | }; |
2614 | struct nfs_setattrres res = { | |
2615 | .fattr = fattr, | |
1775fd3e | 2616 | .label = olabel, |
1da177e4 LT |
2617 | .server = server, |
2618 | }; | |
2619 | struct rpc_message msg = { | |
659bfcd6 TM |
2620 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2621 | .rpc_argp = &arg, | |
2622 | .rpc_resp = &res, | |
2623 | .rpc_cred = cred, | |
1da177e4 | 2624 | }; |
26e976a8 | 2625 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2626 | fmode_t fmode; |
2627 | bool truncate; | |
65e4308d | 2628 | int status; |
1da177e4 | 2629 | |
aa9c2669 DQ |
2630 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2631 | if (ilabel) | |
2632 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2633 | ||
0e574af1 | 2634 | nfs_fattr_init(fattr); |
1da177e4 | 2635 | |
ee3ae84e TM |
2636 | /* Servers should only apply open mode checks for file size changes */ |
2637 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2638 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2639 | ||
2640 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2641 | /* Use that stateid */ | |
0418dae1 | 2642 | } else if (truncate && state != NULL) { |
2a369153 TM |
2643 | struct nfs_lockowner lockowner = { |
2644 | .l_owner = current->files, | |
2645 | .l_pid = current->tgid, | |
2646 | }; | |
0418dae1 TM |
2647 | if (!nfs4_valid_open_stateid(state)) |
2648 | return -EBADF; | |
2649 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2650 | &lockowner) == -EIO) | |
2651 | return -EBADF; | |
08e9eac4 | 2652 | } else |
f597c537 | 2653 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2654 | |
7c513058 | 2655 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2656 | if (status == 0 && state != NULL) |
2657 | renew_lease(server, timestamp); | |
65e4308d | 2658 | return status; |
1da177e4 LT |
2659 | } |
2660 | ||
659bfcd6 TM |
2661 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2662 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2663 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2664 | struct nfs4_label *olabel) | |
1da177e4 | 2665 | { |
3e4f6290 | 2666 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2667 | struct nfs4_exception exception = { |
2668 | .state = state, | |
3114ea7a | 2669 | .inode = inode, |
a1d0b5ee | 2670 | }; |
1da177e4 LT |
2671 | int err; |
2672 | do { | |
1775fd3e | 2673 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2674 | trace_nfs4_setattr(inode, err); |
451146be TM |
2675 | switch (err) { |
2676 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2677 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2678 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2679 | "applying open mode checks to " | |
2680 | "a SETATTR that is not " | |
2681 | "changing file size.\n", | |
2682 | server->nfs_client->cl_hostname); | |
2683 | } | |
451146be TM |
2684 | if (state && !(state->state & FMODE_WRITE)) { |
2685 | err = -EBADF; | |
2686 | if (sattr->ia_valid & ATTR_OPEN) | |
2687 | err = -EACCES; | |
2688 | goto out; | |
2689 | } | |
2690 | } | |
2691 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2692 | } while (exception.retry); |
451146be | 2693 | out: |
1da177e4 LT |
2694 | return err; |
2695 | } | |
2696 | ||
500d701f PT |
2697 | static bool |
2698 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
2699 | { | |
2700 | if (inode == NULL || !nfs_have_layout(inode)) | |
2701 | return false; | |
2702 | ||
2703 | return pnfs_wait_on_layoutreturn(inode, task); | |
2704 | } | |
2705 | ||
1da177e4 LT |
2706 | struct nfs4_closedata { |
2707 | struct inode *inode; | |
2708 | struct nfs4_state *state; | |
2709 | struct nfs_closeargs arg; | |
2710 | struct nfs_closeres res; | |
516a6af6 | 2711 | struct nfs_fattr fattr; |
26e976a8 | 2712 | unsigned long timestamp; |
f7e8917a FI |
2713 | bool roc; |
2714 | u32 roc_barrier; | |
1da177e4 LT |
2715 | }; |
2716 | ||
963d8fe5 | 2717 | static void nfs4_free_closedata(void *data) |
9512135d | 2718 | { |
963d8fe5 TM |
2719 | struct nfs4_closedata *calldata = data; |
2720 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2721 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2722 | |
f7e8917a FI |
2723 | if (calldata->roc) |
2724 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2725 | nfs4_put_open_state(calldata->state); |
2726 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2727 | nfs4_put_state_owner(sp); |
322b2b90 | 2728 | nfs_sb_deactive(sb); |
9512135d TM |
2729 | kfree(calldata); |
2730 | } | |
2731 | ||
963d8fe5 | 2732 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2733 | { |
963d8fe5 | 2734 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2735 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2736 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2737 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2738 | |
a3ca5651 | 2739 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2740 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2741 | return; | |
42113a75 | 2742 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2743 | /* hmm. we are done with the inode, and in the process of freeing |
2744 | * the state_owner. we keep this around to process errors | |
2745 | */ | |
1da177e4 LT |
2746 | switch (task->tk_status) { |
2747 | case 0: | |
412f6c4c | 2748 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2749 | if (calldata->roc) |
f7e8917a FI |
2750 | pnfs_roc_set_barrier(state->inode, |
2751 | calldata->roc_barrier); | |
26e976a8 | 2752 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2753 | break; |
69794ad7 | 2754 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2755 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2756 | case -NFS4ERR_OLD_STATEID: |
2757 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2758 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2759 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2760 | &state->open_stateid)) { |
566fcec6 TM |
2761 | rpc_restart_call_prepare(task); |
2762 | goto out_release; | |
2763 | } | |
dc0b027d | 2764 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2765 | break; |
1da177e4 | 2766 | default: |
8478eaa1 | 2767 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2768 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2769 | goto out_release; |
2770 | } | |
1da177e4 | 2771 | } |
4a1e2feb TM |
2772 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
2773 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 2774 | out_release: |
72211dbe | 2775 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2776 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2777 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2778 | } |
2779 | ||
4ce70ada | 2780 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2781 | { |
4ce70ada | 2782 | struct nfs4_closedata *calldata = data; |
9512135d | 2783 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2784 | struct inode *inode = calldata->inode; |
aee7af35 | 2785 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2786 | int call_close = 0; |
9512135d | 2787 | |
a3ca5651 | 2788 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2789 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2790 | goto out_wait; |
003707c7 | 2791 | |
88069f77 | 2792 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2793 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2794 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2795 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2796 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2797 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2798 | /* Calculate the change in open mode */ |
cd9288ff | 2799 | calldata->arg.fmode = 0; |
e7616923 | 2800 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2801 | if (state->n_rdonly == 0) |
2802 | call_close |= is_rdonly; | |
2803 | else if (is_rdonly) | |
2804 | calldata->arg.fmode |= FMODE_READ; | |
2805 | if (state->n_wronly == 0) | |
2806 | call_close |= is_wronly; | |
2807 | else if (is_wronly) | |
2808 | calldata->arg.fmode |= FMODE_WRITE; | |
2809 | } else if (is_rdwr) | |
2810 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2811 | ||
2812 | if (calldata->arg.fmode == 0) | |
2813 | call_close |= is_rdwr; | |
2814 | ||
5d422301 TM |
2815 | if (!nfs4_valid_open_stateid(state)) |
2816 | call_close = 0; | |
4cecb76f | 2817 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2818 | |
2819 | if (!call_close) { | |
963d8fe5 | 2820 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2821 | goto out_no_action; |
9512135d | 2822 | } |
88069f77 | 2823 | |
500d701f PT |
2824 | if (nfs4_wait_on_layoutreturn(inode, task)) { |
2825 | nfs_release_seqid(calldata->arg.seqid); | |
2826 | goto out_wait; | |
2827 | } | |
2828 | ||
3c13cb5b | 2829 | if (calldata->arg.fmode == 0) |
88069f77 | 2830 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2831 | if (calldata->roc) |
2832 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2833 | ||
6ae37339 TM |
2834 | calldata->arg.share_access = |
2835 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2836 | calldata->arg.fmode, 0); | |
88069f77 | 2837 | |
516a6af6 | 2838 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2839 | calldata->timestamp = jiffies; |
7fdab069 | 2840 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2841 | &calldata->arg.seq_args, |
2842 | &calldata->res.seq_res, | |
2240a9e2 TM |
2843 | task) != 0) |
2844 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2845 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2846 | return; |
2847 | out_no_action: | |
2848 | task->tk_action = NULL; | |
2849 | out_wait: | |
2850 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2851 | } |
2852 | ||
963d8fe5 | 2853 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2854 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2855 | .rpc_call_done = nfs4_close_done, |
2856 | .rpc_release = nfs4_free_closedata, | |
2857 | }; | |
2858 | ||
fe08c546 PT |
2859 | static bool nfs4_roc(struct inode *inode) |
2860 | { | |
40dd4b7a | 2861 | if (!nfs_have_layout(inode)) |
fe08c546 | 2862 | return false; |
fe08c546 PT |
2863 | return pnfs_roc(inode); |
2864 | } | |
2865 | ||
1da177e4 LT |
2866 | /* |
2867 | * It is possible for data to be read/written from a mem-mapped file | |
2868 | * after the sys_close call (which hits the vfs layer as a flush). | |
2869 | * This means that we can't safely call nfsv4 close on a file until | |
2870 | * the inode is cleared. This in turn means that we are not good | |
2871 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2872 | * share state even when we are done with one of the three share | |
2873 | * stateid's in the inode. | |
2874 | * | |
2875 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2876 | */ | |
1f7977c1 | 2877 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2878 | { |
4a35bd41 | 2879 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2880 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2881 | struct nfs4_closedata *calldata; |
b39e625b TM |
2882 | struct nfs4_state_owner *sp = state->owner; |
2883 | struct rpc_task *task; | |
5138fde0 TM |
2884 | struct rpc_message msg = { |
2885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2886 | .rpc_cred = state->owner->so_cred, | |
2887 | }; | |
c970aa85 TM |
2888 | struct rpc_task_setup task_setup_data = { |
2889 | .rpc_client = server->client, | |
5138fde0 | 2890 | .rpc_message = &msg, |
c970aa85 | 2891 | .callback_ops = &nfs4_close_ops, |
101070ca | 2892 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2893 | .flags = RPC_TASK_ASYNC, |
2894 | }; | |
9512135d | 2895 | int status = -ENOMEM; |
1da177e4 | 2896 | |
fa940720 WAA |
2897 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2898 | &task_setup_data.rpc_client, &msg); | |
2899 | ||
8535b2be | 2900 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2901 | if (calldata == NULL) |
9512135d | 2902 | goto out; |
a9c92d6b | 2903 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2904 | calldata->inode = state->inode; |
1da177e4 | 2905 | calldata->state = state; |
4a35bd41 | 2906 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2907 | /* Serialization for the sequence id */ |
63f5f796 TM |
2908 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2909 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2910 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2911 | goto out_free_calldata; |
dc0b027d | 2912 | calldata->arg.fmode = 0; |
a65318bf | 2913 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2914 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2915 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2916 | calldata->res.server = server; |
fe08c546 | 2917 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2918 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2919 | |
1174dd1f TM |
2920 | msg.rpc_argp = &calldata->arg; |
2921 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2922 | task_setup_data.callback_data = calldata; |
2923 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2924 | if (IS_ERR(task)) |
2925 | return PTR_ERR(task); | |
a49c3c77 TM |
2926 | status = 0; |
2927 | if (wait) | |
2928 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2929 | rpc_put_task(task); |
a49c3c77 | 2930 | return status; |
9512135d TM |
2931 | out_free_calldata: |
2932 | kfree(calldata); | |
2933 | out: | |
b39e625b TM |
2934 | nfs4_put_open_state(state); |
2935 | nfs4_put_state_owner(sp); | |
9512135d | 2936 | return status; |
1da177e4 LT |
2937 | } |
2938 | ||
2b484297 | 2939 | static struct inode * |
5bc2afc2 TM |
2940 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2941 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2942 | { |
1da177e4 | 2943 | struct nfs4_state *state; |
aa9c2669 DQ |
2944 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2945 | ||
2946 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2947 | |
565277f6 | 2948 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2949 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2950 | |
2951 | nfs4_label_release_security(label); | |
2952 | ||
f46e0bd3 TM |
2953 | if (IS_ERR(state)) |
2954 | return ERR_CAST(state); | |
275bb307 | 2955 | return state->inode; |
1da177e4 LT |
2956 | } |
2957 | ||
1185a552 | 2958 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2959 | { |
2960 | if (ctx->state == NULL) | |
2961 | return; | |
2962 | if (is_sync) | |
643168c2 | 2963 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2964 | else |
643168c2 | 2965 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2966 | } |
1da177e4 | 2967 | |
b944dba3 TM |
2968 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2969 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 2970 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 2971 | |
1da177e4 LT |
2972 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2973 | { | |
8c61282f | 2974 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
2975 | struct nfs4_server_caps_arg args = { |
2976 | .fhandle = fhandle, | |
8c61282f | 2977 | .bitmask = bitmask, |
43652ad5 | 2978 | }; |
1da177e4 LT |
2979 | struct nfs4_server_caps_res res = {}; |
2980 | struct rpc_message msg = { | |
2981 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2982 | .rpc_argp = &args, |
1da177e4 LT |
2983 | .rpc_resp = &res, |
2984 | }; | |
2985 | int status; | |
2986 | ||
8c61282f KM |
2987 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
2988 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
2989 | FATTR4_WORD0_LINK_SUPPORT | | |
2990 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
2991 | FATTR4_WORD0_ACLSUPPORT; | |
2992 | if (minorversion) | |
2993 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
2994 | ||
7c513058 | 2995 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2996 | if (status == 0) { |
b944dba3 | 2997 | /* Sanity check the server answers */ |
8c61282f | 2998 | switch (minorversion) { |
b944dba3 TM |
2999 | case 0: |
3000 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3001 | res.attr_bitmask[2] = 0; | |
3002 | break; | |
3003 | case 1: | |
3004 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3005 | break; | |
3006 | case 2: | |
3007 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3008 | } | |
1da177e4 | 3009 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
3010 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
3011 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
3012 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
3013 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
3014 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
3015 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
3016 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3017 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3018 | server->caps |= NFS_CAP_ACLS; |
3019 | if (res.has_links != 0) | |
3020 | server->caps |= NFS_CAP_HARDLINKS; | |
3021 | if (res.has_symlinks != 0) | |
3022 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
3023 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
3024 | server->caps |= NFS_CAP_FILEID; | |
3025 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
3026 | server->caps |= NFS_CAP_MODE; | |
3027 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
3028 | server->caps |= NFS_CAP_NLINK; | |
3029 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
3030 | server->caps |= NFS_CAP_OWNER; | |
3031 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
3032 | server->caps |= NFS_CAP_OWNER_GROUP; | |
3033 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
3034 | server->caps |= NFS_CAP_ATIME; | |
3035 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
3036 | server->caps |= NFS_CAP_CTIME; | |
3037 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
3038 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
3039 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3040 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3041 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3042 | #endif | |
3043 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
3044 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3045 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3046 | |
a65318bf TM |
3047 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3048 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3049 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3050 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
3051 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3052 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 3053 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3054 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3055 | } |
cccef3b9 | 3056 | |
1da177e4 LT |
3057 | return status; |
3058 | } | |
3059 | ||
55a97593 | 3060 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
3061 | { |
3062 | struct nfs4_exception exception = { }; | |
3063 | int err; | |
3064 | do { | |
3065 | err = nfs4_handle_exception(server, | |
3066 | _nfs4_server_capabilities(server, fhandle), | |
3067 | &exception); | |
3068 | } while (exception.retry); | |
3069 | return err; | |
3070 | } | |
3071 | ||
3072 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3073 | struct nfs_fsinfo *info) | |
3074 | { | |
aa9c2669 | 3075 | u32 bitmask[3]; |
1da177e4 | 3076 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3077 | .bitmask = bitmask, |
1da177e4 LT |
3078 | }; |
3079 | struct nfs4_lookup_res res = { | |
3080 | .server = server, | |
0e574af1 | 3081 | .fattr = info->fattr, |
1da177e4 LT |
3082 | .fh = fhandle, |
3083 | }; | |
3084 | struct rpc_message msg = { | |
3085 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3086 | .rpc_argp = &args, | |
3087 | .rpc_resp = &res, | |
3088 | }; | |
008f55d0 | 3089 | |
aa9c2669 DQ |
3090 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3091 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3092 | /* | |
3093 | * Process the label in the upcoming getfattr | |
3094 | */ | |
3095 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3096 | ||
0e574af1 | 3097 | nfs_fattr_init(info->fattr); |
7c513058 | 3098 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3099 | } |
3100 | ||
3101 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3102 | struct nfs_fsinfo *info) | |
3103 | { | |
3104 | struct nfs4_exception exception = { }; | |
3105 | int err; | |
3106 | do { | |
fb8a5ba8 | 3107 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3108 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3109 | switch (err) { |
3110 | case 0: | |
3111 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3112 | goto out; |
fb8a5ba8 BS |
3113 | default: |
3114 | err = nfs4_handle_exception(server, err, &exception); | |
3115 | } | |
1da177e4 | 3116 | } while (exception.retry); |
05e9cfb4 | 3117 | out: |
1da177e4 LT |
3118 | return err; |
3119 | } | |
3120 | ||
8f70e95f BS |
3121 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3122 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3123 | { | |
c2190661 TM |
3124 | struct rpc_auth_create_args auth_args = { |
3125 | .pseudoflavor = flavor, | |
3126 | }; | |
8f70e95f BS |
3127 | struct rpc_auth *auth; |
3128 | int ret; | |
3129 | ||
c2190661 | 3130 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3131 | if (IS_ERR(auth)) { |
75bc8821 | 3132 | ret = -EACCES; |
8f70e95f BS |
3133 | goto out; |
3134 | } | |
3135 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3136 | out: |
3137 | return ret; | |
3138 | } | |
3139 | ||
9a744ba3 CL |
3140 | /* |
3141 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3142 | * | |
3143 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3144 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3145 | * | |
3146 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3147 | * negative errno value. | |
3148 | */ | |
801a16dc | 3149 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3150 | struct nfs_fsinfo *info) |
1da177e4 | 3151 | { |
9a744ba3 CL |
3152 | /* Per 3530bis 15.33.5 */ |
3153 | static const rpc_authflavor_t flav_array[] = { | |
3154 | RPC_AUTH_GSS_KRB5P, | |
3155 | RPC_AUTH_GSS_KRB5I, | |
3156 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3157 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3158 | RPC_AUTH_NULL, |
3159 | }; | |
3160 | int status = -EPERM; | |
3161 | size_t i; | |
6a1a1e34 | 3162 | |
4d4b69dd WAA |
3163 | if (server->auth_info.flavor_len > 0) { |
3164 | /* try each flavor specified by user */ | |
3165 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3166 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3167 | server->auth_info.flavors[i]); | |
3168 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3169 | continue; | |
3170 | break; | |
3171 | } | |
3172 | } else { | |
3173 | /* no flavors specified by user, try default list */ | |
3174 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3175 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3176 | flav_array[i]); | |
3177 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3178 | continue; | |
3179 | break; | |
3180 | } | |
8f70e95f | 3181 | } |
9a744ba3 | 3182 | |
fb8a5ba8 BS |
3183 | /* |
3184 | * -EACCESS could mean that the user doesn't have correct permissions | |
3185 | * to access the mount. It could also mean that we tried to mount | |
3186 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3187 | * existing mount programs don't handle -EACCES very well so it should | |
3188 | * be mapped to -EPERM instead. | |
3189 | */ | |
3190 | if (status == -EACCES) | |
3191 | status = -EPERM; | |
801a16dc BS |
3192 | return status; |
3193 | } | |
3194 | ||
2ed4b95b CL |
3195 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3196 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3197 | { | |
3198 | int mv = server->nfs_client->cl_minorversion; | |
3199 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3200 | } | |
3201 | ||
3202 | /** | |
3203 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3204 | * @server: initialized nfs_server handle | |
3205 | * @fhandle: we fill in the pseudo-fs root file handle | |
3206 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3207 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3208 | * |
3209 | * Returns zero on success, or a negative errno. | |
801a16dc | 3210 | */ |
3028eb2b | 3211 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3212 | struct nfs_fsinfo *info, |
3213 | bool auth_probe) | |
801a16dc | 3214 | { |
c7757074 | 3215 | int status = 0; |
2ed4b95b | 3216 | |
c7757074 | 3217 | if (!auth_probe) |
5e6b1990 | 3218 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3219 | |
3220 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
2ed4b95b CL |
3221 | status = nfs4_do_find_root_sec(server, fhandle, info); |
3222 | ||
1da177e4 LT |
3223 | if (status == 0) |
3224 | status = nfs4_server_capabilities(server, fhandle); | |
3225 | if (status == 0) | |
3226 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3227 | |
c12e87f4 | 3228 | return nfs4_map_errors(status); |
1da177e4 LT |
3229 | } |
3230 | ||
bae36241 BS |
3231 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3232 | struct nfs_fsinfo *info) | |
3233 | { | |
3234 | int error; | |
3235 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3236 | struct nfs4_label *label = NULL; |
bae36241 BS |
3237 | |
3238 | error = nfs4_server_capabilities(server, mntfh); | |
3239 | if (error < 0) { | |
3240 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3241 | return error; | |
3242 | } | |
3243 | ||
14c43f76 DQ |
3244 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3245 | if (IS_ERR(label)) | |
3246 | return PTR_ERR(label); | |
3247 | ||
1775fd3e | 3248 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3249 | if (error < 0) { |
3250 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3251 | goto err_free_label; |
bae36241 BS |
3252 | } |
3253 | ||
3254 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3255 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3256 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3257 | ||
14c43f76 DQ |
3258 | err_free_label: |
3259 | nfs4_label_free(label); | |
3260 | ||
bae36241 BS |
3261 | return error; |
3262 | } | |
3263 | ||
6b97fd3d MN |
3264 | /* |
3265 | * Get locations and (maybe) other attributes of a referral. | |
3266 | * Note that we'll actually follow the referral later when | |
3267 | * we detect fsid mismatch in inode revalidation | |
3268 | */ | |
f05d147f BS |
3269 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3270 | const struct qstr *name, struct nfs_fattr *fattr, | |
3271 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3272 | { |
3273 | int status = -ENOMEM; | |
3274 | struct page *page = NULL; | |
3275 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3276 | |
3277 | page = alloc_page(GFP_KERNEL); | |
3278 | if (page == NULL) | |
3279 | goto out; | |
3280 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3281 | if (locations == NULL) | |
3282 | goto out; | |
3283 | ||
f05d147f | 3284 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3285 | if (status != 0) |
3286 | goto out; | |
519ae255 CL |
3287 | |
3288 | /* | |
3289 | * If the fsid didn't change, this is a migration event, not a | |
3290 | * referral. Cause us to drop into the exception handler, which | |
3291 | * will kick off migration recovery. | |
3292 | */ | |
6b97fd3d | 3293 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3294 | dprintk("%s: server did not return a different fsid for" |
3295 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3296 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3297 | goto out; |
3298 | } | |
533eb461 AA |
3299 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3300 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3301 | |
533eb461 | 3302 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3303 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3304 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3305 | out: | |
3306 | if (page) | |
3307 | __free_page(page); | |
5d7ca35a | 3308 | kfree(locations); |
6b97fd3d MN |
3309 | return status; |
3310 | } | |
3311 | ||
1775fd3e DQ |
3312 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3313 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3314 | { |
3315 | struct nfs4_getattr_arg args = { | |
3316 | .fh = fhandle, | |
3317 | .bitmask = server->attr_bitmask, | |
3318 | }; | |
3319 | struct nfs4_getattr_res res = { | |
3320 | .fattr = fattr, | |
1775fd3e | 3321 | .label = label, |
1da177e4 LT |
3322 | .server = server, |
3323 | }; | |
3324 | struct rpc_message msg = { | |
3325 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3326 | .rpc_argp = &args, | |
3327 | .rpc_resp = &res, | |
3328 | }; | |
aa9c2669 DQ |
3329 | |
3330 | args.bitmask = nfs4_bitmask(server, label); | |
3331 | ||
0e574af1 | 3332 | nfs_fattr_init(fattr); |
7c513058 | 3333 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3334 | } |
3335 | ||
1775fd3e DQ |
3336 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3337 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3338 | { |
3339 | struct nfs4_exception exception = { }; | |
3340 | int err; | |
3341 | do { | |
b5f875a9 TM |
3342 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3343 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3344 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3345 | &exception); |
3346 | } while (exception.retry); | |
3347 | return err; | |
3348 | } | |
3349 | ||
3350 | /* | |
3351 | * The file is not closed if it is opened due to the a request to change | |
3352 | * the size of the file. The open call will not be needed once the | |
3353 | * VFS layer lookup-intents are implemented. | |
3354 | * | |
3355 | * Close is called when the inode is destroyed. | |
3356 | * If we haven't opened the file for O_WRONLY, we | |
3357 | * need to in the size_change case to obtain a stateid. | |
3358 | * | |
3359 | * Got race? | |
3360 | * Because OPEN is always done by name in nfsv4, it is | |
3361 | * possible that we opened a different file by the same | |
3362 | * name. We can recognize this race condition, but we | |
3363 | * can't do anything about it besides returning an error. | |
3364 | * | |
3365 | * This will be fixed with VFS changes (lookup-intent). | |
3366 | */ | |
3367 | static int | |
3368 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3369 | struct iattr *sattr) | |
3370 | { | |
2b0143b5 | 3371 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3372 | struct rpc_cred *cred = NULL; |
d530838b | 3373 | struct nfs4_state *state = NULL; |
14c43f76 | 3374 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3375 | int status; |
3376 | ||
88ac815c PT |
3377 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3378 | sattr->ia_valid & ATTR_SIZE && | |
3379 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3380 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3381 | |
0e574af1 | 3382 | nfs_fattr_init(fattr); |
1da177e4 | 3383 | |
2669940d AA |
3384 | /* Deal with open(O_TRUNC) */ |
3385 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3386 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3387 | |
3388 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3389 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3390 | return 0; |
3391 | ||
d530838b | 3392 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3393 | if (sattr->ia_valid & ATTR_FILE) { |
3394 | struct nfs_open_context *ctx; | |
3395 | ||
3396 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3397 | if (ctx) { |
3398 | cred = ctx->cred; | |
3399 | state = ctx->state; | |
3400 | } | |
659bfcd6 | 3401 | } |
08e9eac4 | 3402 | |
14c43f76 DQ |
3403 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3404 | if (IS_ERR(label)) | |
3405 | return PTR_ERR(label); | |
3406 | ||
3407 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3408 | if (status == 0) { |
f044636d | 3409 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3410 | nfs_setsecurity(inode, fattr, label); |
3411 | } | |
14c43f76 | 3412 | nfs4_label_free(label); |
1da177e4 LT |
3413 | return status; |
3414 | } | |
3415 | ||
0c2e53f1 TM |
3416 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3417 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3418 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3419 | { |
0c2e53f1 | 3420 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3421 | int status; |
3422 | struct nfs4_lookup_arg args = { | |
3423 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3424 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3425 | .name = name, |
3426 | }; | |
3427 | struct nfs4_lookup_res res = { | |
3428 | .server = server, | |
3429 | .fattr = fattr, | |
aa9c2669 | 3430 | .label = label, |
2b3de441 DH |
3431 | .fh = fhandle, |
3432 | }; | |
3433 | struct rpc_message msg = { | |
3434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3435 | .rpc_argp = &args, | |
3436 | .rpc_resp = &res, | |
3437 | }; | |
3438 | ||
aa9c2669 DQ |
3439 | args.bitmask = nfs4_bitmask(server, label); |
3440 | ||
2b3de441 DH |
3441 | nfs_fattr_init(fattr); |
3442 | ||
1da177e4 | 3443 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3444 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3445 | dprintk("NFS reply lookup: %d\n", status); |
3446 | return status; | |
3447 | } | |
3448 | ||
72de53ec | 3449 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3450 | { |
7ebb9315 | 3451 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3452 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3453 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3454 | fattr->nlink = 2; | |
3455 | } | |
3456 | ||
72de53ec BS |
3457 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3458 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3459 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3460 | { |
3461 | struct nfs4_exception exception = { }; | |
72de53ec | 3462 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3463 | int err; |
3464 | do { | |
1775fd3e | 3465 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3466 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3467 | switch (err) { |
08ef7bd3 | 3468 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3469 | err = -ENOENT; |
3470 | goto out; | |
0c2e53f1 | 3471 | case -NFS4ERR_MOVED: |
f05d147f | 3472 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3473 | if (err == -NFS4ERR_MOVED) |
3474 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3475 | goto out; |
0c2e53f1 | 3476 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3477 | err = -EPERM; |
3478 | if (client != *clnt) | |
3479 | goto out; | |
66b06860 | 3480 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3481 | if (IS_ERR(client)) |
3482 | return PTR_ERR(client); | |
3483 | ||
3484 | exception.retry = 1; | |
3485 | break; | |
3486 | default: | |
3487 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3488 | } |
1da177e4 | 3489 | } while (exception.retry); |
72de53ec BS |
3490 | |
3491 | out: | |
3492 | if (err == 0) | |
3493 | *clnt = client; | |
3494 | else if (client != *clnt) | |
3495 | rpc_shutdown_client(client); | |
3496 | ||
1da177e4 LT |
3497 | return err; |
3498 | } | |
3499 | ||
80a16b21 | 3500 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3501 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3502 | struct nfs4_label *label) | |
72de53ec BS |
3503 | { |
3504 | int status; | |
3505 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3506 | ||
1775fd3e | 3507 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3508 | if (client != NFS_CLIENT(dir)) { |
3509 | rpc_shutdown_client(client); | |
3510 | nfs_fixup_secinfo_attributes(fattr); | |
3511 | } | |
3512 | return status; | |
3513 | } | |
3514 | ||
f05d147f BS |
3515 | struct rpc_clnt * |
3516 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3517 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3518 | { | |
b72888cb | 3519 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3520 | int status; |
f05d147f | 3521 | |
1775fd3e | 3522 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3523 | if (status < 0) |
f05d147f | 3524 | return ERR_PTR(status); |
b72888cb | 3525 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3526 | } |
3527 | ||
1da177e4 LT |
3528 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3529 | { | |
76b32999 | 3530 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3531 | struct nfs4_accessargs args = { |
3532 | .fh = NFS_FH(inode), | |
a4980e78 | 3533 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3534 | }; |
3535 | struct nfs4_accessres res = { | |
3536 | .server = server, | |
1da177e4 | 3537 | }; |
1da177e4 LT |
3538 | struct rpc_message msg = { |
3539 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3540 | .rpc_argp = &args, | |
3541 | .rpc_resp = &res, | |
3542 | .rpc_cred = entry->cred, | |
3543 | }; | |
3544 | int mode = entry->mask; | |
aa9c2669 | 3545 | int status = 0; |
1da177e4 LT |
3546 | |
3547 | /* | |
3548 | * Determine which access bits we want to ask for... | |
3549 | */ | |
3550 | if (mode & MAY_READ) | |
3551 | args.access |= NFS4_ACCESS_READ; | |
3552 | if (S_ISDIR(inode->i_mode)) { | |
3553 | if (mode & MAY_WRITE) | |
3554 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3555 | if (mode & MAY_EXEC) | |
3556 | args.access |= NFS4_ACCESS_LOOKUP; | |
3557 | } else { | |
3558 | if (mode & MAY_WRITE) | |
3559 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3560 | if (mode & MAY_EXEC) | |
3561 | args.access |= NFS4_ACCESS_EXECUTE; | |
3562 | } | |
c407d41a TM |
3563 | |
3564 | res.fattr = nfs_alloc_fattr(); | |
3565 | if (res.fattr == NULL) | |
3566 | return -ENOMEM; | |
3567 | ||
7c513058 | 3568 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3569 | if (!status) { |
6168f62c | 3570 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3571 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3572 | } |
c407d41a | 3573 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3574 | return status; |
3575 | } | |
3576 | ||
3577 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3578 | { | |
3579 | struct nfs4_exception exception = { }; | |
3580 | int err; | |
3581 | do { | |
c1578b76 TM |
3582 | err = _nfs4_proc_access(inode, entry); |
3583 | trace_nfs4_access(inode, err); | |
3584 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3585 | &exception); |
3586 | } while (exception.retry); | |
3587 | return err; | |
3588 | } | |
3589 | ||
3590 | /* | |
3591 | * TODO: For the time being, we don't try to get any attributes | |
3592 | * along with any of the zero-copy operations READ, READDIR, | |
3593 | * READLINK, WRITE. | |
3594 | * | |
3595 | * In the case of the first three, we want to put the GETATTR | |
3596 | * after the read-type operation -- this is because it is hard | |
3597 | * to predict the length of a GETATTR response in v4, and thus | |
3598 | * align the READ data correctly. This means that the GETATTR | |
3599 | * may end up partially falling into the page cache, and we should | |
3600 | * shift it into the 'tail' of the xdr_buf before processing. | |
3601 | * To do this efficiently, we need to know the total length | |
3602 | * of data received, which doesn't seem to be available outside | |
3603 | * of the RPC layer. | |
3604 | * | |
3605 | * In the case of WRITE, we also want to put the GETATTR after | |
3606 | * the operation -- in this case because we want to make sure | |
140150db | 3607 | * we get the post-operation mtime and size. |
1da177e4 LT |
3608 | * |
3609 | * Both of these changes to the XDR layer would in fact be quite | |
3610 | * minor, but I decided to leave them for a subsequent patch. | |
3611 | */ | |
3612 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3613 | unsigned int pgbase, unsigned int pglen) | |
3614 | { | |
3615 | struct nfs4_readlink args = { | |
3616 | .fh = NFS_FH(inode), | |
3617 | .pgbase = pgbase, | |
3618 | .pglen = pglen, | |
3619 | .pages = &page, | |
3620 | }; | |
f50c7000 | 3621 | struct nfs4_readlink_res res; |
1da177e4 LT |
3622 | struct rpc_message msg = { |
3623 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3624 | .rpc_argp = &args, | |
f50c7000 | 3625 | .rpc_resp = &res, |
1da177e4 LT |
3626 | }; |
3627 | ||
7c513058 | 3628 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3629 | } |
3630 | ||
3631 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3632 | unsigned int pgbase, unsigned int pglen) | |
3633 | { | |
3634 | struct nfs4_exception exception = { }; | |
3635 | int err; | |
3636 | do { | |
c1578b76 TM |
3637 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3638 | trace_nfs4_readlink(inode, err); | |
3639 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3640 | &exception); |
3641 | } while (exception.retry); | |
3642 | return err; | |
3643 | } | |
3644 | ||
1da177e4 | 3645 | /* |
8867fe58 | 3646 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3647 | */ |
1da177e4 LT |
3648 | static int |
3649 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3650 | int flags) |
1da177e4 | 3651 | { |
aa9c2669 | 3652 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3653 | struct nfs_open_context *ctx; |
1da177e4 | 3654 | struct nfs4_state *state; |
1da177e4 LT |
3655 | int status = 0; |
3656 | ||
8867fe58 MS |
3657 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3658 | if (IS_ERR(ctx)) | |
3659 | return PTR_ERR(ctx); | |
3660 | ||
aa9c2669 DQ |
3661 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3662 | ||
a8a5da99 | 3663 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3664 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3665 | if (IS_ERR(state)) { |
3666 | status = PTR_ERR(state); | |
c0204fd2 | 3667 | goto out; |
1da177e4 | 3668 | } |
1da177e4 | 3669 | out: |
aa9c2669 | 3670 | nfs4_label_release_security(ilabel); |
8867fe58 | 3671 | put_nfs_open_context(ctx); |
1da177e4 LT |
3672 | return status; |
3673 | } | |
3674 | ||
3675 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3676 | { | |
16e42959 | 3677 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3678 | struct nfs_removeargs args = { |
1da177e4 | 3679 | .fh = NFS_FH(dir), |
26fe5750 | 3680 | .name = *name, |
16e42959 | 3681 | }; |
4fdc17b2 | 3682 | struct nfs_removeres res = { |
16e42959 | 3683 | .server = server, |
1da177e4 | 3684 | }; |
1da177e4 | 3685 | struct rpc_message msg = { |
4fdc17b2 TM |
3686 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3687 | .rpc_argp = &args, | |
3688 | .rpc_resp = &res, | |
1da177e4 | 3689 | }; |
778d2817 | 3690 | int status; |
1da177e4 | 3691 | |
7c513058 | 3692 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3693 | if (status == 0) |
16e42959 | 3694 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3695 | return status; |
3696 | } | |
3697 | ||
3698 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3699 | { | |
3700 | struct nfs4_exception exception = { }; | |
3701 | int err; | |
3702 | do { | |
078ea3df TM |
3703 | err = _nfs4_proc_remove(dir, name); |
3704 | trace_nfs4_remove(dir, name, err); | |
3705 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3706 | &exception); |
3707 | } while (exception.retry); | |
3708 | return err; | |
3709 | } | |
3710 | ||
e4eff1a6 | 3711 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3712 | { |
e4eff1a6 TM |
3713 | struct nfs_server *server = NFS_SERVER(dir); |
3714 | struct nfs_removeargs *args = msg->rpc_argp; | |
3715 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3716 | |
e4eff1a6 | 3717 | res->server = server; |
1da177e4 | 3718 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3719 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3720 | |
3721 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3722 | } |
3723 | ||
34e137cc BS |
3724 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3725 | { | |
d9afbd1b TM |
3726 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3727 | &data->args.seq_args, | |
3728 | &data->res.seq_res, | |
3729 | task); | |
1da177e4 LT |
3730 | } |
3731 | ||
e4eff1a6 | 3732 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3733 | { |
078ea3df TM |
3734 | struct nfs_unlinkdata *data = task->tk_calldata; |
3735 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3736 | |
14516c3a TM |
3737 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3738 | return 0; | |
8478eaa1 N |
3739 | if (nfs4_async_handle_error(task, res->server, NULL, |
3740 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3741 | return 0; |
3742 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3743 | return 1; |
1da177e4 LT |
3744 | } |
3745 | ||
d3d4152a JL |
3746 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3747 | { | |
3748 | struct nfs_server *server = NFS_SERVER(dir); | |
3749 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3750 | struct nfs_renameres *res = msg->rpc_resp; | |
3751 | ||
3752 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3753 | res->server = server; |
a9c92d6b | 3754 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3755 | } |
3756 | ||
c6bfa1a1 BS |
3757 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3758 | { | |
d9afbd1b TM |
3759 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3760 | &data->args.seq_args, | |
3761 | &data->res.seq_res, | |
3762 | task); | |
d3d4152a JL |
3763 | } |
3764 | ||
3765 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3766 | struct inode *new_dir) | |
3767 | { | |
fbc6f7c2 TM |
3768 | struct nfs_renamedata *data = task->tk_calldata; |
3769 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3770 | |
3771 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3772 | return 0; | |
8478eaa1 | 3773 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3774 | return 0; |
3775 | ||
3776 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3777 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3778 | return 1; |
3779 | } | |
3780 | ||
1da177e4 LT |
3781 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3782 | { | |
91ba2eee | 3783 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3784 | struct nfs4_link_arg arg = { |
3785 | .fh = NFS_FH(inode), | |
3786 | .dir_fh = NFS_FH(dir), | |
3787 | .name = name, | |
91ba2eee TM |
3788 | .bitmask = server->attr_bitmask, |
3789 | }; | |
91ba2eee TM |
3790 | struct nfs4_link_res res = { |
3791 | .server = server, | |
1775fd3e | 3792 | .label = NULL, |
1da177e4 | 3793 | }; |
1da177e4 LT |
3794 | struct rpc_message msg = { |
3795 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3796 | .rpc_argp = &arg, | |
91ba2eee | 3797 | .rpc_resp = &res, |
1da177e4 | 3798 | }; |
136f2627 TM |
3799 | int status = -ENOMEM; |
3800 | ||
3801 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3802 | if (res.fattr == NULL) |
136f2627 | 3803 | goto out; |
1da177e4 | 3804 | |
14c43f76 DQ |
3805 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3806 | if (IS_ERR(res.label)) { | |
3807 | status = PTR_ERR(res.label); | |
3808 | goto out; | |
3809 | } | |
aa9c2669 | 3810 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3811 | |
7c513058 | 3812 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3813 | if (!status) { |
3814 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3815 | status = nfs_post_op_update_inode(inode, res.fattr); |
3816 | if (!status) | |
3817 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3818 | } |
14c43f76 DQ |
3819 | |
3820 | ||
3821 | nfs4_label_free(res.label); | |
3822 | ||
136f2627 | 3823 | out: |
136f2627 | 3824 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3825 | return status; |
3826 | } | |
3827 | ||
3828 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3829 | { | |
3830 | struct nfs4_exception exception = { }; | |
3831 | int err; | |
3832 | do { | |
3833 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3834 | _nfs4_proc_link(inode, dir, name), | |
3835 | &exception); | |
3836 | } while (exception.retry); | |
3837 | return err; | |
3838 | } | |
3839 | ||
57dc9a57 TM |
3840 | struct nfs4_createdata { |
3841 | struct rpc_message msg; | |
3842 | struct nfs4_create_arg arg; | |
3843 | struct nfs4_create_res res; | |
3844 | struct nfs_fh fh; | |
3845 | struct nfs_fattr fattr; | |
1775fd3e | 3846 | struct nfs4_label *label; |
57dc9a57 TM |
3847 | }; |
3848 | ||
3849 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3850 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3851 | { | |
3852 | struct nfs4_createdata *data; | |
3853 | ||
3854 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3855 | if (data != NULL) { | |
3856 | struct nfs_server *server = NFS_SERVER(dir); | |
3857 | ||
14c43f76 DQ |
3858 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3859 | if (IS_ERR(data->label)) | |
3860 | goto out_free; | |
3861 | ||
57dc9a57 TM |
3862 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3863 | data->msg.rpc_argp = &data->arg; | |
3864 | data->msg.rpc_resp = &data->res; | |
3865 | data->arg.dir_fh = NFS_FH(dir); | |
3866 | data->arg.server = server; | |
3867 | data->arg.name = name; | |
3868 | data->arg.attrs = sattr; | |
3869 | data->arg.ftype = ftype; | |
aa9c2669 | 3870 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3871 | data->res.server = server; |
3872 | data->res.fh = &data->fh; | |
3873 | data->res.fattr = &data->fattr; | |
1775fd3e | 3874 | data->res.label = data->label; |
57dc9a57 | 3875 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3876 | } |
3877 | return data; | |
14c43f76 DQ |
3878 | out_free: |
3879 | kfree(data); | |
3880 | return NULL; | |
57dc9a57 TM |
3881 | } |
3882 | ||
3883 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3884 | { | |
7c513058 | 3885 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3886 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3887 | if (status == 0) { |
3888 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3889 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3890 | } |
3891 | return status; | |
3892 | } | |
3893 | ||
3894 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3895 | { | |
14c43f76 | 3896 | nfs4_label_free(data->label); |
57dc9a57 TM |
3897 | kfree(data); |
3898 | } | |
3899 | ||
4f390c15 | 3900 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3901 | struct page *page, unsigned int len, struct iattr *sattr, |
3902 | struct nfs4_label *label) | |
1da177e4 | 3903 | { |
57dc9a57 TM |
3904 | struct nfs4_createdata *data; |
3905 | int status = -ENAMETOOLONG; | |
1da177e4 | 3906 | |
94a6d753 | 3907 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3908 | goto out; |
4f390c15 | 3909 | |
57dc9a57 TM |
3910 | status = -ENOMEM; |
3911 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3912 | if (data == NULL) | |
3913 | goto out; | |
3914 | ||
3915 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3916 | data->arg.u.symlink.pages = &page; | |
3917 | data->arg.u.symlink.len = len; | |
1775fd3e | 3918 | data->arg.label = label; |
1da177e4 | 3919 | |
57dc9a57 TM |
3920 | status = nfs4_do_create(dir, dentry, data); |
3921 | ||
3922 | nfs4_free_createdata(data); | |
3923 | out: | |
1da177e4 LT |
3924 | return status; |
3925 | } | |
3926 | ||
4f390c15 | 3927 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3928 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3929 | { |
3930 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3931 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3932 | int err; |
aa9c2669 DQ |
3933 | |
3934 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3935 | ||
1da177e4 | 3936 | do { |
078ea3df TM |
3937 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3938 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3939 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3940 | &exception); |
3941 | } while (exception.retry); | |
aa9c2669 DQ |
3942 | |
3943 | nfs4_label_release_security(label); | |
1da177e4 LT |
3944 | return err; |
3945 | } | |
3946 | ||
3947 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3948 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3949 | { |
57dc9a57 TM |
3950 | struct nfs4_createdata *data; |
3951 | int status = -ENOMEM; | |
1da177e4 | 3952 | |
57dc9a57 TM |
3953 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3954 | if (data == NULL) | |
3955 | goto out; | |
3956 | ||
1775fd3e | 3957 | data->arg.label = label; |
57dc9a57 TM |
3958 | status = nfs4_do_create(dir, dentry, data); |
3959 | ||
3960 | nfs4_free_createdata(data); | |
3961 | out: | |
1da177e4 LT |
3962 | return status; |
3963 | } | |
3964 | ||
3965 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3966 | struct iattr *sattr) | |
3967 | { | |
3968 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3969 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3970 | int err; |
a8a5da99 | 3971 | |
aa9c2669 DQ |
3972 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3973 | ||
a8a5da99 | 3974 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3975 | do { |
078ea3df TM |
3976 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3977 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3978 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3979 | &exception); |
3980 | } while (exception.retry); | |
aa9c2669 DQ |
3981 | nfs4_label_release_security(label); |
3982 | ||
1da177e4 LT |
3983 | return err; |
3984 | } | |
3985 | ||
3986 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3987 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 3988 | { |
2b0143b5 | 3989 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
3990 | struct nfs4_readdir_arg args = { |
3991 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3992 | .pages = pages, |
1da177e4 LT |
3993 | .pgbase = 0, |
3994 | .count = count, | |
2b0143b5 | 3995 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 3996 | .plus = plus, |
1da177e4 LT |
3997 | }; |
3998 | struct nfs4_readdir_res res; | |
3999 | struct rpc_message msg = { | |
4000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
4001 | .rpc_argp = &args, | |
4002 | .rpc_resp = &res, | |
4003 | .rpc_cred = cred, | |
4004 | }; | |
4005 | int status; | |
4006 | ||
6de1472f AV |
4007 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
4008 | dentry, | |
eadf4598 | 4009 | (unsigned long long)cookie); |
c3f52af3 | 4010 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 4011 | res.pgbase = args.pgbase; |
7c513058 | 4012 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 4013 | if (status >= 0) { |
c3f52af3 | 4014 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
4015 | status += args.pgbase; |
4016 | } | |
c4812998 TM |
4017 | |
4018 | nfs_invalidate_atime(dir); | |
4019 | ||
3110ff80 | 4020 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
4021 | return status; |
4022 | } | |
4023 | ||
4024 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4025 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
4026 | { |
4027 | struct nfs4_exception exception = { }; | |
4028 | int err; | |
4029 | do { | |
c1578b76 TM |
4030 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
4031 | pages, count, plus); | |
2b0143b5 DH |
4032 | trace_nfs4_readdir(d_inode(dentry), err); |
4033 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
4034 | &exception); |
4035 | } while (exception.retry); | |
4036 | return err; | |
4037 | } | |
4038 | ||
4039 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 4040 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 4041 | { |
57dc9a57 TM |
4042 | struct nfs4_createdata *data; |
4043 | int mode = sattr->ia_mode; | |
4044 | int status = -ENOMEM; | |
1da177e4 | 4045 | |
57dc9a57 TM |
4046 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
4047 | if (data == NULL) | |
4048 | goto out; | |
4049 | ||
1da177e4 | 4050 | if (S_ISFIFO(mode)) |
57dc9a57 | 4051 | data->arg.ftype = NF4FIFO; |
1da177e4 | 4052 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
4053 | data->arg.ftype = NF4BLK; |
4054 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4055 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
4056 | } |
4057 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
4058 | data->arg.ftype = NF4CHR; |
4059 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4060 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
4061 | } else if (!S_ISSOCK(mode)) { |
4062 | status = -EINVAL; | |
4063 | goto out_free; | |
1da177e4 | 4064 | } |
1775fd3e | 4065 | |
aa9c2669 | 4066 | data->arg.label = label; |
57dc9a57 | 4067 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4068 | out_free: |
57dc9a57 TM |
4069 | nfs4_free_createdata(data); |
4070 | out: | |
1da177e4 LT |
4071 | return status; |
4072 | } | |
4073 | ||
4074 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4075 | struct iattr *sattr, dev_t rdev) | |
4076 | { | |
4077 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4078 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4079 | int err; |
a8a5da99 | 4080 | |
aa9c2669 DQ |
4081 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4082 | ||
a8a5da99 | 4083 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4084 | do { |
078ea3df TM |
4085 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4086 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4087 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4088 | &exception); |
4089 | } while (exception.retry); | |
aa9c2669 DQ |
4090 | |
4091 | nfs4_label_release_security(label); | |
4092 | ||
1da177e4 LT |
4093 | return err; |
4094 | } | |
4095 | ||
4096 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4097 | struct nfs_fsstat *fsstat) | |
4098 | { | |
4099 | struct nfs4_statfs_arg args = { | |
4100 | .fh = fhandle, | |
4101 | .bitmask = server->attr_bitmask, | |
4102 | }; | |
24ad148a BH |
4103 | struct nfs4_statfs_res res = { |
4104 | .fsstat = fsstat, | |
4105 | }; | |
1da177e4 LT |
4106 | struct rpc_message msg = { |
4107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4108 | .rpc_argp = &args, | |
24ad148a | 4109 | .rpc_resp = &res, |
1da177e4 LT |
4110 | }; |
4111 | ||
0e574af1 | 4112 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4113 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4114 | } |
4115 | ||
4116 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4117 | { | |
4118 | struct nfs4_exception exception = { }; | |
4119 | int err; | |
4120 | do { | |
4121 | err = nfs4_handle_exception(server, | |
4122 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4123 | &exception); | |
4124 | } while (exception.retry); | |
4125 | return err; | |
4126 | } | |
4127 | ||
4128 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4129 | struct nfs_fsinfo *fsinfo) | |
4130 | { | |
4131 | struct nfs4_fsinfo_arg args = { | |
4132 | .fh = fhandle, | |
4133 | .bitmask = server->attr_bitmask, | |
4134 | }; | |
3dda5e43 BH |
4135 | struct nfs4_fsinfo_res res = { |
4136 | .fsinfo = fsinfo, | |
4137 | }; | |
1da177e4 LT |
4138 | struct rpc_message msg = { |
4139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4140 | .rpc_argp = &args, | |
3dda5e43 | 4141 | .rpc_resp = &res, |
1da177e4 LT |
4142 | }; |
4143 | ||
7c513058 | 4144 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4145 | } |
4146 | ||
4147 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4148 | { | |
4149 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4150 | unsigned long now = jiffies; |
1da177e4 LT |
4151 | int err; |
4152 | ||
4153 | do { | |
83ca7f5a | 4154 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4155 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4156 | if (err == 0) { |
4157 | struct nfs_client *clp = server->nfs_client; | |
4158 | ||
4159 | spin_lock(&clp->cl_lock); | |
4160 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4161 | clp->cl_last_renewal = now; | |
4162 | spin_unlock(&clp->cl_lock); | |
4163 | break; | |
4164 | } | |
4165 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4166 | } while (exception.retry); |
4167 | return err; | |
4168 | } | |
4169 | ||
4170 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4171 | { | |
e38eb650 BS |
4172 | int error; |
4173 | ||
0e574af1 | 4174 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4175 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4176 | if (error == 0) { |
4177 | /* block layout checks this! */ | |
4178 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4179 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4180 | } |
e38eb650 BS |
4181 | |
4182 | return error; | |
1da177e4 LT |
4183 | } |
4184 | ||
4185 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4186 | struct nfs_pathconf *pathconf) | |
4187 | { | |
4188 | struct nfs4_pathconf_arg args = { | |
4189 | .fh = fhandle, | |
4190 | .bitmask = server->attr_bitmask, | |
4191 | }; | |
d45b2989 BH |
4192 | struct nfs4_pathconf_res res = { |
4193 | .pathconf = pathconf, | |
4194 | }; | |
1da177e4 LT |
4195 | struct rpc_message msg = { |
4196 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4197 | .rpc_argp = &args, | |
d45b2989 | 4198 | .rpc_resp = &res, |
1da177e4 LT |
4199 | }; |
4200 | ||
4201 | /* None of the pathconf attributes are mandatory to implement */ | |
4202 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4203 | memset(pathconf, 0, sizeof(*pathconf)); | |
4204 | return 0; | |
4205 | } | |
4206 | ||
0e574af1 | 4207 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4208 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4209 | } |
4210 | ||
4211 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4212 | struct nfs_pathconf *pathconf) | |
4213 | { | |
4214 | struct nfs4_exception exception = { }; | |
4215 | int err; | |
4216 | ||
4217 | do { | |
4218 | err = nfs4_handle_exception(server, | |
4219 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4220 | &exception); | |
4221 | } while (exception.retry); | |
4222 | return err; | |
4223 | } | |
4224 | ||
5521abfd | 4225 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4226 | const struct nfs_open_context *ctx, |
4227 | const struct nfs_lock_context *l_ctx, | |
4228 | fmode_t fmode) | |
4229 | { | |
4230 | const struct nfs_lockowner *lockowner = NULL; | |
4231 | ||
4232 | if (l_ctx != NULL) | |
4233 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4234 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4235 | } |
4236 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4237 | ||
5521abfd TM |
4238 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4239 | const struct nfs_open_context *ctx, | |
4240 | const struct nfs_lock_context *l_ctx, | |
4241 | fmode_t fmode) | |
4242 | { | |
4243 | nfs4_stateid current_stateid; | |
4244 | ||
e1253be0 TM |
4245 | /* If the current stateid represents a lost lock, then exit */ |
4246 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4247 | return true; | |
5521abfd TM |
4248 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4249 | } | |
4250 | ||
4251 | static bool nfs4_error_stateid_expired(int err) | |
4252 | { | |
4253 | switch (err) { | |
4254 | case -NFS4ERR_DELEG_REVOKED: | |
4255 | case -NFS4ERR_ADMIN_REVOKED: | |
4256 | case -NFS4ERR_BAD_STATEID: | |
4257 | case -NFS4ERR_STALE_STATEID: | |
4258 | case -NFS4ERR_OLD_STATEID: | |
4259 | case -NFS4ERR_OPENMODE: | |
4260 | case -NFS4ERR_EXPIRED: | |
4261 | return true; | |
4262 | } | |
4263 | return false; | |
4264 | } | |
4265 | ||
d45f60c6 | 4266 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4267 | { |
d45f60c6 | 4268 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4269 | } |
4270 | ||
d45f60c6 | 4271 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4272 | { |
d45f60c6 | 4273 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4274 | |
d45f60c6 WAA |
4275 | trace_nfs4_read(hdr, task->tk_status); |
4276 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4277 | hdr->args.context->state, |
4278 | NULL) == -EAGAIN) { | |
d00c5d43 | 4279 | rpc_restart_call_prepare(task); |
ec06c096 | 4280 | return -EAGAIN; |
1da177e4 | 4281 | } |
8850df99 | 4282 | |
d45f60c6 | 4283 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4284 | if (task->tk_status > 0) |
d45f60c6 | 4285 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4286 | return 0; |
1da177e4 LT |
4287 | } |
4288 | ||
5521abfd | 4289 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4290 | struct nfs_pgio_args *args) |
5521abfd TM |
4291 | { |
4292 | ||
4293 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4294 | nfs4_stateid_is_current(&args->stateid, | |
4295 | args->context, | |
4296 | args->lock_context, | |
4297 | FMODE_READ)) | |
4298 | return false; | |
4299 | rpc_restart_call_prepare(task); | |
4300 | return true; | |
4301 | } | |
4302 | ||
d45f60c6 | 4303 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4304 | { |
4305 | ||
4306 | dprintk("--> %s\n", __func__); | |
4307 | ||
d45f60c6 | 4308 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4309 | return -EAGAIN; |
d45f60c6 | 4310 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4311 | return -EAGAIN; |
d45f60c6 WAA |
4312 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4313 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4314 | } |
4315 | ||
d45f60c6 WAA |
4316 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4317 | struct rpc_message *msg) | |
1da177e4 | 4318 | { |
d45f60c6 WAA |
4319 | hdr->timestamp = jiffies; |
4320 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4321 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4322 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4323 | } |
4324 | ||
d45f60c6 WAA |
4325 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4326 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4327 | { |
d45f60c6 WAA |
4328 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4329 | &hdr->args.seq_args, | |
4330 | &hdr->res.seq_res, | |
9b206149 | 4331 | task)) |
ef1820f9 | 4332 | return 0; |
d45f60c6 WAA |
4333 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4334 | hdr->args.lock_context, | |
4335 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4336 | return -EIO; |
d45f60c6 | 4337 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4338 | return -EIO; |
4339 | return 0; | |
1da177e4 LT |
4340 | } |
4341 | ||
d45f60c6 WAA |
4342 | static int nfs4_write_done_cb(struct rpc_task *task, |
4343 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4344 | { |
d45f60c6 | 4345 | struct inode *inode = hdr->inode; |
8478eaa1 | 4346 | |
d45f60c6 WAA |
4347 | trace_nfs4_write(hdr, task->tk_status); |
4348 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4349 | hdr->args.context->state, |
4350 | NULL) == -EAGAIN) { | |
d00c5d43 | 4351 | rpc_restart_call_prepare(task); |
788e7a89 | 4352 | return -EAGAIN; |
1da177e4 | 4353 | } |
4f9838c7 | 4354 | if (task->tk_status >= 0) { |
d45f60c6 | 4355 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4356 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4357 | } |
788e7a89 | 4358 | return 0; |
1da177e4 LT |
4359 | } |
4360 | ||
5521abfd | 4361 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4362 | struct nfs_pgio_args *args) |
5521abfd TM |
4363 | { |
4364 | ||
4365 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4366 | nfs4_stateid_is_current(&args->stateid, | |
4367 | args->context, | |
4368 | args->lock_context, | |
4369 | FMODE_WRITE)) | |
4370 | return false; | |
4371 | rpc_restart_call_prepare(task); | |
4372 | return true; | |
4373 | } | |
4374 | ||
d45f60c6 | 4375 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4376 | { |
d45f60c6 | 4377 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4378 | return -EAGAIN; |
d45f60c6 | 4379 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4380 | return -EAGAIN; |
d45f60c6 WAA |
4381 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4382 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4383 | } |
4384 | ||
5a37f851 | 4385 | static |
d45f60c6 | 4386 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4387 | { |
5a37f851 | 4388 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4389 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4390 | return false; |
4391 | /* Otherwise, request attributes if and only if we don't hold | |
4392 | * a delegation | |
4393 | */ | |
011e2a7f | 4394 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4395 | } |
a69aef14 | 4396 | |
d45f60c6 WAA |
4397 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4398 | struct rpc_message *msg) | |
1da177e4 | 4399 | { |
d45f60c6 | 4400 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4401 | |
d45f60c6 WAA |
4402 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4403 | hdr->args.bitmask = NULL; | |
4404 | hdr->res.fattr = NULL; | |
7ffd1064 | 4405 | } else |
d45f60c6 | 4406 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4407 | |
d45f60c6 WAA |
4408 | if (!hdr->pgio_done_cb) |
4409 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4410 | hdr->res.server = server; | |
4411 | hdr->timestamp = jiffies; | |
1da177e4 | 4412 | |
bdc7f021 | 4413 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4414 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4415 | } |
4416 | ||
0b7c0153 | 4417 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4418 | { |
d9afbd1b TM |
4419 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4420 | &data->args.seq_args, | |
4421 | &data->res.seq_res, | |
4422 | task); | |
1da177e4 LT |
4423 | } |
4424 | ||
0b7c0153 | 4425 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4426 | { |
1da177e4 | 4427 | struct inode *inode = data->inode; |
14516c3a | 4428 | |
cc668ab3 | 4429 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4430 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4431 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4432 | rpc_restart_call_prepare(task); |
788e7a89 | 4433 | return -EAGAIN; |
1da177e4 | 4434 | } |
788e7a89 | 4435 | return 0; |
1da177e4 LT |
4436 | } |
4437 | ||
0b7c0153 | 4438 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4439 | { |
4440 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4441 | return -EAGAIN; | |
0b7c0153 | 4442 | return data->commit_done_cb(task, data); |
5f452431 FI |
4443 | } |
4444 | ||
0b7c0153 | 4445 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4446 | { |
788e7a89 | 4447 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4448 | |
0b7c0153 FI |
4449 | if (data->commit_done_cb == NULL) |
4450 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4451 | data->res.server = server; |
bdc7f021 | 4452 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4453 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4454 | } |
4455 | ||
9bc4e3ca CL |
4456 | struct nfs4_renewdata { |
4457 | struct nfs_client *client; | |
4458 | unsigned long timestamp; | |
4459 | }; | |
4460 | ||
1da177e4 LT |
4461 | /* |
4462 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4463 | * standalone procedure for queueing an asynchronous RENEW. | |
4464 | */ | |
9bc4e3ca | 4465 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4466 | { |
9bc4e3ca CL |
4467 | struct nfs4_renewdata *data = calldata; |
4468 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4469 | |
0851de06 AB |
4470 | if (atomic_read(&clp->cl_count) > 1) |
4471 | nfs4_schedule_state_renewal(clp); | |
4472 | nfs_put_client(clp); | |
9bc4e3ca | 4473 | kfree(data); |
dc96aef9 AB |
4474 | } |
4475 | ||
9bc4e3ca | 4476 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4477 | { |
9bc4e3ca CL |
4478 | struct nfs4_renewdata *data = calldata; |
4479 | struct nfs_client *clp = data->client; | |
4480 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4481 | |
c6d01c6f | 4482 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4483 | switch (task->tk_status) { |
4484 | case 0: | |
4485 | break; | |
4486 | case -NFS4ERR_LEASE_MOVED: | |
4487 | nfs4_schedule_lease_moved_recovery(clp); | |
4488 | break; | |
4489 | default: | |
95baa25c | 4490 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4491 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4492 | return; | |
4493 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4494 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4495 | return; |
4496 | } | |
4497 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4498 | } |
452e9352 | 4499 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4500 | } |
4501 | ||
963d8fe5 TM |
4502 | static const struct rpc_call_ops nfs4_renew_ops = { |
4503 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4504 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4505 | }; |
4506 | ||
2f60ea6b | 4507 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4508 | { |
4509 | struct rpc_message msg = { | |
4510 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4511 | .rpc_argp = clp, | |
b4454fe1 | 4512 | .rpc_cred = cred, |
1da177e4 | 4513 | }; |
9bc4e3ca | 4514 | struct nfs4_renewdata *data; |
1da177e4 | 4515 | |
2f60ea6b TM |
4516 | if (renew_flags == 0) |
4517 | return 0; | |
0851de06 AB |
4518 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4519 | return -EIO; | |
b569ad34 | 4520 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4521 | if (data == NULL) |
4522 | return -ENOMEM; | |
4523 | data->client = clp; | |
4524 | data->timestamp = jiffies; | |
bc7a05ca | 4525 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4526 | &nfs4_renew_ops, data); |
1da177e4 LT |
4527 | } |
4528 | ||
8534d4ec | 4529 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4530 | { |
4531 | struct rpc_message msg = { | |
4532 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4533 | .rpc_argp = clp, | |
b4454fe1 | 4534 | .rpc_cred = cred, |
1da177e4 LT |
4535 | }; |
4536 | unsigned long now = jiffies; | |
4537 | int status; | |
4538 | ||
bc7a05ca | 4539 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4540 | if (status < 0) |
4541 | return status; | |
452e9352 | 4542 | do_renew_lease(clp, now); |
1da177e4 LT |
4543 | return 0; |
4544 | } | |
4545 | ||
aa1870af BF |
4546 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4547 | { | |
7dd7d959 | 4548 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4549 | } |
4550 | ||
21f498c2 TM |
4551 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4552 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4553 | * the stack. |
4554 | */ | |
21f498c2 | 4555 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4556 | |
e9e3d724 NH |
4557 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4558 | struct page **pages, unsigned int *pgbase) | |
4559 | { | |
4560 | struct page *newpage, **spages; | |
4561 | int rc = 0; | |
4562 | size_t len; | |
4563 | spages = pages; | |
4564 | ||
4565 | do { | |
21f498c2 | 4566 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4567 | newpage = alloc_page(GFP_KERNEL); |
4568 | ||
4569 | if (newpage == NULL) | |
4570 | goto unwind; | |
4571 | memcpy(page_address(newpage), buf, len); | |
4572 | buf += len; | |
4573 | buflen -= len; | |
4574 | *pages++ = newpage; | |
4575 | rc++; | |
4576 | } while (buflen != 0); | |
4577 | ||
4578 | return rc; | |
4579 | ||
4580 | unwind: | |
4581 | for(; rc > 0; rc--) | |
4582 | __free_page(spages[rc-1]); | |
4583 | return -ENOMEM; | |
4584 | } | |
4585 | ||
e50a1c2e BF |
4586 | struct nfs4_cached_acl { |
4587 | int cached; | |
4588 | size_t len; | |
3e9d4154 | 4589 | char data[0]; |
e50a1c2e BF |
4590 | }; |
4591 | ||
4592 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4593 | { | |
4594 | struct nfs_inode *nfsi = NFS_I(inode); | |
4595 | ||
4596 | spin_lock(&inode->i_lock); | |
4597 | kfree(nfsi->nfs4_acl); | |
4598 | nfsi->nfs4_acl = acl; | |
4599 | spin_unlock(&inode->i_lock); | |
4600 | } | |
4601 | ||
4602 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4603 | { | |
4604 | nfs4_set_cached_acl(inode, NULL); | |
4605 | } | |
4606 | ||
4607 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4608 | { | |
4609 | struct nfs_inode *nfsi = NFS_I(inode); | |
4610 | struct nfs4_cached_acl *acl; | |
4611 | int ret = -ENOENT; | |
4612 | ||
4613 | spin_lock(&inode->i_lock); | |
4614 | acl = nfsi->nfs4_acl; | |
4615 | if (acl == NULL) | |
4616 | goto out; | |
4617 | if (buf == NULL) /* user is just asking for length */ | |
4618 | goto out_len; | |
4619 | if (acl->cached == 0) | |
4620 | goto out; | |
4621 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4622 | if (acl->len > buflen) | |
4623 | goto out; | |
4624 | memcpy(buf, acl->data, acl->len); | |
4625 | out_len: | |
4626 | ret = acl->len; | |
4627 | out: | |
4628 | spin_unlock(&inode->i_lock); | |
4629 | return ret; | |
4630 | } | |
4631 | ||
5794d21e | 4632 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4633 | { |
4634 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4635 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4636 | |
1f1ea6c2 | 4637 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4638 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4639 | if (acl == NULL) |
4640 | goto out; | |
4641 | acl->cached = 1; | |
5794d21e | 4642 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4643 | } else { |
4644 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4645 | if (acl == NULL) | |
4646 | goto out; | |
4647 | acl->cached = 0; | |
4648 | } | |
4649 | acl->len = acl_len; | |
4650 | out: | |
4651 | nfs4_set_cached_acl(inode, acl); | |
4652 | } | |
4653 | ||
bf118a34 AA |
4654 | /* |
4655 | * The getxattr API returns the required buffer length when called with a | |
4656 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4657 | * the required buf. On a NULL buf, we send a page of data to the server | |
4658 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4659 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4660 | * the cache. If not so, we throw away the page, and cache the required | |
4661 | * length. The next getxattr call will then produce another round trip to | |
4662 | * the server, this time with the input buf of the required size. | |
4663 | */ | |
16b4289c | 4664 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4665 | { |
bf118a34 | 4666 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4667 | struct nfs_getaclargs args = { |
4668 | .fh = NFS_FH(inode), | |
4669 | .acl_pages = pages, | |
4670 | .acl_len = buflen, | |
4671 | }; | |
663c79b3 BH |
4672 | struct nfs_getaclres res = { |
4673 | .acl_len = buflen, | |
4674 | }; | |
aa1870af BF |
4675 | struct rpc_message msg = { |
4676 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4677 | .rpc_argp = &args, | |
663c79b3 | 4678 | .rpc_resp = &res, |
aa1870af | 4679 | }; |
21f498c2 TM |
4680 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4681 | int ret = -ENOMEM, i; | |
aa1870af | 4682 | |
bf118a34 AA |
4683 | /* As long as we're doing a round trip to the server anyway, |
4684 | * let's be prepared for a page of acl data. */ | |
4685 | if (npages == 0) | |
4686 | npages = 1; | |
21f498c2 TM |
4687 | if (npages > ARRAY_SIZE(pages)) |
4688 | return -ERANGE; | |
5a006899 | 4689 | |
bf118a34 AA |
4690 | for (i = 0; i < npages; i++) { |
4691 | pages[i] = alloc_page(GFP_KERNEL); | |
4692 | if (!pages[i]) | |
4693 | goto out_free; | |
e50a1c2e | 4694 | } |
5a006899 SP |
4695 | |
4696 | /* for decoding across pages */ | |
4697 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4698 | if (!res.acl_scratch) | |
4699 | goto out_free; | |
4700 | ||
bf118a34 AA |
4701 | args.acl_len = npages * PAGE_SIZE; |
4702 | args.acl_pgbase = 0; | |
5a006899 | 4703 | |
de040bec | 4704 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4705 | __func__, buf, buflen, npages, args.acl_len); |
4706 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4707 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4708 | if (ret) |
4709 | goto out_free; | |
bf118a34 | 4710 | |
1f1ea6c2 TM |
4711 | /* Handle the case where the passed-in buffer is too short */ |
4712 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4713 | /* Did the user only issue a request for the acl length? */ | |
4714 | if (buf == NULL) | |
4715 | goto out_ok; | |
e50a1c2e | 4716 | ret = -ERANGE; |
1f1ea6c2 | 4717 | goto out_free; |
e50a1c2e | 4718 | } |
1f1ea6c2 | 4719 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4720 | if (buf) { |
4721 | if (res.acl_len > buflen) { | |
4722 | ret = -ERANGE; | |
4723 | goto out_free; | |
4724 | } | |
1f1ea6c2 | 4725 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4726 | } |
1f1ea6c2 TM |
4727 | out_ok: |
4728 | ret = res.acl_len; | |
e50a1c2e | 4729 | out_free: |
bf118a34 AA |
4730 | for (i = 0; i < npages; i++) |
4731 | if (pages[i]) | |
4732 | __free_page(pages[i]); | |
331818f1 TM |
4733 | if (res.acl_scratch) |
4734 | __free_page(res.acl_scratch); | |
aa1870af BF |
4735 | return ret; |
4736 | } | |
4737 | ||
16b4289c TM |
4738 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4739 | { | |
4740 | struct nfs4_exception exception = { }; | |
4741 | ssize_t ret; | |
4742 | do { | |
4743 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4744 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4745 | if (ret >= 0) |
4746 | break; | |
4747 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4748 | } while (exception.retry); | |
4749 | return ret; | |
4750 | } | |
4751 | ||
e50a1c2e BF |
4752 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4753 | { | |
4754 | struct nfs_server *server = NFS_SERVER(inode); | |
4755 | int ret; | |
4756 | ||
4757 | if (!nfs4_server_supports_acls(server)) | |
4758 | return -EOPNOTSUPP; | |
4759 | ret = nfs_revalidate_inode(server, inode); | |
4760 | if (ret < 0) | |
4761 | return ret; | |
08a22b39 AK |
4762 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4763 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4764 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4765 | if (ret != -ENOENT) | |
bf118a34 AA |
4766 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4767 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4768 | return ret; |
4769 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4770 | } | |
4771 | ||
16b4289c | 4772 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4773 | { |
4774 | struct nfs_server *server = NFS_SERVER(inode); | |
4775 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4776 | struct nfs_setaclargs arg = { | |
4777 | .fh = NFS_FH(inode), | |
4778 | .acl_pages = pages, | |
4779 | .acl_len = buflen, | |
4780 | }; | |
73c403a9 | 4781 | struct nfs_setaclres res; |
4b580ee3 BF |
4782 | struct rpc_message msg = { |
4783 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4784 | .rpc_argp = &arg, | |
73c403a9 | 4785 | .rpc_resp = &res, |
4b580ee3 | 4786 | }; |
21f498c2 | 4787 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4788 | int ret, i; |
4b580ee3 BF |
4789 | |
4790 | if (!nfs4_server_supports_acls(server)) | |
4791 | return -EOPNOTSUPP; | |
21f498c2 TM |
4792 | if (npages > ARRAY_SIZE(pages)) |
4793 | return -ERANGE; | |
e9e3d724 NH |
4794 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4795 | if (i < 0) | |
4796 | return i; | |
57ec14c5 | 4797 | nfs4_inode_return_delegation(inode); |
7c513058 | 4798 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4799 | |
4800 | /* | |
4801 | * Free each page after tx, so the only ref left is | |
4802 | * held by the network stack | |
4803 | */ | |
4804 | for (; i > 0; i--) | |
4805 | put_page(pages[i-1]); | |
4806 | ||
08a22b39 AK |
4807 | /* |
4808 | * Acl update can result in inode attribute update. | |
4809 | * so mark the attribute cache invalid. | |
4810 | */ | |
4811 | spin_lock(&inode->i_lock); | |
4812 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4813 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4814 | nfs_access_zap_cache(inode); |
4815 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4816 | return ret; |
4817 | } | |
4818 | ||
16b4289c TM |
4819 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4820 | { | |
4821 | struct nfs4_exception exception = { }; | |
4822 | int err; | |
4823 | do { | |
c1578b76 TM |
4824 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4825 | trace_nfs4_set_acl(inode, err); | |
4826 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4827 | &exception); |
4828 | } while (exception.retry); | |
4829 | return err; | |
4830 | } | |
4831 | ||
aa9c2669 DQ |
4832 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4833 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4834 | size_t buflen) | |
4835 | { | |
4836 | struct nfs_server *server = NFS_SERVER(inode); | |
4837 | struct nfs_fattr fattr; | |
4838 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4839 | ||
4840 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4841 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4842 | .fh = NFS_FH(inode), |
4843 | .bitmask = bitmask, | |
4844 | }; | |
4845 | struct nfs4_getattr_res res = { | |
4846 | .fattr = &fattr, | |
4847 | .label = &label, | |
4848 | .server = server, | |
4849 | }; | |
4850 | struct rpc_message msg = { | |
4851 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4852 | .rpc_argp = &arg, |
aa9c2669 DQ |
4853 | .rpc_resp = &res, |
4854 | }; | |
4855 | int ret; | |
4856 | ||
4857 | nfs_fattr_init(&fattr); | |
4858 | ||
fcb63a9b | 4859 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4860 | if (ret) |
4861 | return ret; | |
4862 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4863 | return -ENOENT; | |
4864 | if (buflen < label.len) | |
4865 | return -ERANGE; | |
4866 | return 0; | |
4867 | } | |
4868 | ||
4869 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4870 | size_t buflen) | |
4871 | { | |
4872 | struct nfs4_exception exception = { }; | |
4873 | int err; | |
4874 | ||
4875 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4876 | return -EOPNOTSUPP; | |
4877 | ||
4878 | do { | |
c1578b76 TM |
4879 | err = _nfs4_get_security_label(inode, buf, buflen); |
4880 | trace_nfs4_get_security_label(inode, err); | |
4881 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4882 | &exception); |
4883 | } while (exception.retry); | |
4884 | return err; | |
4885 | } | |
4886 | ||
4887 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4888 | struct nfs4_label *ilabel, | |
4889 | struct nfs_fattr *fattr, | |
4890 | struct nfs4_label *olabel) | |
4891 | { | |
4892 | ||
4893 | struct iattr sattr = {0}; | |
4894 | struct nfs_server *server = NFS_SERVER(inode); | |
4895 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4896 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4897 | .fh = NFS_FH(inode), |
4898 | .iap = &sattr, | |
4899 | .server = server, | |
4900 | .bitmask = bitmask, | |
4901 | .label = ilabel, | |
4902 | }; | |
4903 | struct nfs_setattrres res = { | |
4904 | .fattr = fattr, | |
4905 | .label = olabel, | |
4906 | .server = server, | |
4907 | }; | |
4908 | struct rpc_message msg = { | |
4909 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4910 | .rpc_argp = &arg, |
aa9c2669 DQ |
4911 | .rpc_resp = &res, |
4912 | }; | |
4913 | int status; | |
4914 | ||
12207f69 | 4915 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4916 | |
12207f69 | 4917 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4918 | if (status) |
4919 | dprintk("%s failed: %d\n", __func__, status); | |
4920 | ||
4921 | return status; | |
4922 | } | |
4923 | ||
4924 | static int nfs4_do_set_security_label(struct inode *inode, | |
4925 | struct nfs4_label *ilabel, | |
4926 | struct nfs_fattr *fattr, | |
4927 | struct nfs4_label *olabel) | |
4928 | { | |
4929 | struct nfs4_exception exception = { }; | |
4930 | int err; | |
4931 | ||
4932 | do { | |
c1578b76 TM |
4933 | err = _nfs4_do_set_security_label(inode, ilabel, |
4934 | fattr, olabel); | |
4935 | trace_nfs4_set_security_label(inode, err); | |
4936 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4937 | &exception); |
4938 | } while (exception.retry); | |
4939 | return err; | |
4940 | } | |
4941 | ||
4942 | static int | |
4943 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4944 | { | |
4945 | struct nfs4_label ilabel, *olabel = NULL; | |
4946 | struct nfs_fattr fattr; | |
4947 | struct rpc_cred *cred; | |
2b0143b5 | 4948 | struct inode *inode = d_inode(dentry); |
aa9c2669 DQ |
4949 | int status; |
4950 | ||
4951 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4952 | return -EOPNOTSUPP; | |
4953 | ||
4954 | nfs_fattr_init(&fattr); | |
4955 | ||
4956 | ilabel.pi = 0; | |
4957 | ilabel.lfs = 0; | |
4958 | ilabel.label = (char *)buf; | |
4959 | ilabel.len = buflen; | |
4960 | ||
4961 | cred = rpc_lookup_cred(); | |
4962 | if (IS_ERR(cred)) | |
4963 | return PTR_ERR(cred); | |
4964 | ||
4965 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4966 | if (IS_ERR(olabel)) { | |
4967 | status = -PTR_ERR(olabel); | |
4968 | goto out; | |
4969 | } | |
4970 | ||
4971 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4972 | if (status == 0) | |
4973 | nfs_setsecurity(inode, &fattr, olabel); | |
4974 | ||
4975 | nfs4_label_free(olabel); | |
4976 | out: | |
4977 | put_rpccred(cred); | |
4978 | return status; | |
4979 | } | |
4980 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4981 | ||
4982 | ||
1da177e4 | 4983 | static int |
8478eaa1 N |
4984 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, |
4985 | struct nfs4_state *state, long *timeout) | |
1da177e4 | 4986 | { |
aa5190d0 TM |
4987 | struct nfs_client *clp = server->nfs_client; |
4988 | ||
4989 | if (task->tk_status >= 0) | |
1da177e4 LT |
4990 | return 0; |
4991 | switch(task->tk_status) { | |
a1d0b5ee | 4992 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4993 | case -NFS4ERR_ADMIN_REVOKED: |
4994 | case -NFS4ERR_BAD_STATEID: | |
4995 | case -NFS4ERR_OPENMODE: | |
4996 | if (state == NULL) | |
4997 | break; | |
5d422301 | 4998 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4999 | goto recovery_failed; |
0400a6b0 | 5000 | goto wait_on_recovery; |
0ced63d1 | 5001 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
5002 | if (state != NULL) { |
5003 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 5004 | goto recovery_failed; |
5d422301 | 5005 | } |
1da177e4 | 5006 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 5007 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
5008 | nfs4_schedule_lease_recovery(clp); |
5009 | goto wait_on_recovery; | |
519ae255 CL |
5010 | case -NFS4ERR_MOVED: |
5011 | if (nfs4_schedule_migration_recovery(server) < 0) | |
5012 | goto recovery_failed; | |
5013 | goto wait_on_recovery; | |
8ef2f8d4 CL |
5014 | case -NFS4ERR_LEASE_MOVED: |
5015 | nfs4_schedule_lease_moved_recovery(clp); | |
5016 | goto wait_on_recovery; | |
4745e315 AA |
5017 | #if defined(CONFIG_NFS_V4_1) |
5018 | case -NFS4ERR_BADSESSION: | |
5019 | case -NFS4ERR_BADSLOT: | |
5020 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5021 | case -NFS4ERR_DEADSESSION: | |
5022 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5023 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
5024 | case -NFS4ERR_SEQ_MISORDERED: | |
5025 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
5026 | task->tk_status); | |
9f594791 | 5027 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 5028 | goto wait_on_recovery; |
4745e315 | 5029 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5030 | case -NFS4ERR_DELAY: |
aa5190d0 | 5031 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
8478eaa1 N |
5032 | rpc_delay(task, nfs4_update_delay(timeout)); |
5033 | goto restart_call; | |
006ea73e | 5034 | case -NFS4ERR_GRACE: |
1da177e4 | 5035 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 5036 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 5037 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 5038 | goto restart_call; |
1da177e4 LT |
5039 | } |
5040 | task->tk_status = nfs4_map_errors(task->tk_status); | |
5041 | return 0; | |
9f51a78e | 5042 | recovery_failed: |
5d422301 TM |
5043 | task->tk_status = -EIO; |
5044 | return 0; | |
0400a6b0 | 5045 | wait_on_recovery: |
a2c0b9e2 | 5046 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
5047 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
5048 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
5049 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
5050 | goto recovery_failed; | |
f1478c13 | 5051 | restart_call: |
a2c0b9e2 TM |
5052 | task->tk_status = 0; |
5053 | return -EAGAIN; | |
1da177e4 LT |
5054 | } |
5055 | ||
f092075d CL |
5056 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
5057 | nfs4_verifier *bootverf) | |
cd93710e CL |
5058 | { |
5059 | __be32 verf[2]; | |
5060 | ||
2c820d9a CL |
5061 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
5062 | /* An impossible timestamp guarantees this value | |
5063 | * will never match a generated boot time. */ | |
5064 | verf[0] = 0; | |
17f26b12 | 5065 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5066 | } else { |
f092075d | 5067 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5068 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5069 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5070 | } |
cd93710e CL |
5071 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5072 | } | |
5073 | ||
a3192688 JL |
5074 | static int |
5075 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5076 | { |
a3192688 JL |
5077 | int result; |
5078 | size_t len; | |
5079 | char *str; | |
e984a55a | 5080 | |
ceb3a16c | 5081 | if (clp->cl_owner_id != NULL) |
a3192688 | 5082 | return 0; |
4a3e5779 | 5083 | |
a3192688 | 5084 | rcu_read_lock(); |
4a70316c | 5085 | len = 14 + strlen(clp->cl_ipaddr) + 1 + |
a3192688 JL |
5086 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
5087 | 1 + | |
5088 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5089 | 1; | |
5090 | rcu_read_unlock(); | |
5091 | ||
5092 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5093 | return -EINVAL; | |
5094 | ||
5095 | /* | |
5096 | * Since this string is allocated at mount time, and held until the | |
5097 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5098 | * about a memory-reclaim deadlock. | |
5099 | */ | |
5100 | str = kmalloc(len, GFP_KERNEL); | |
5101 | if (!str) | |
5102 | return -ENOMEM; | |
ceb3a16c | 5103 | |
e984a55a | 5104 | rcu_read_lock(); |
a3192688 JL |
5105 | result = scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
5106 | clp->cl_ipaddr, | |
5107 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5108 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5109 | rcu_read_unlock(); |
a3192688 | 5110 | |
a3192688 JL |
5111 | clp->cl_owner_id = str; |
5112 | return 0; | |
e984a55a CL |
5113 | } |
5114 | ||
873e3851 JL |
5115 | static int |
5116 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5117 | { | |
5118 | int result; | |
5119 | size_t len; | |
5120 | char *str; | |
5121 | ||
5122 | len = 10 + 10 + 1 + 10 + 1 + | |
5123 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5124 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5125 | ||
5126 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5127 | return -EINVAL; | |
5128 | ||
5129 | /* | |
5130 | * Since this string is allocated at mount time, and held until the | |
5131 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5132 | * about a memory-reclaim deadlock. | |
5133 | */ | |
5134 | str = kmalloc(len, GFP_KERNEL); | |
5135 | if (!str) | |
5136 | return -ENOMEM; | |
5137 | ||
5138 | result = scnprintf(str, len, "Linux NFSv%u.%u %s/%s", | |
5139 | clp->rpc_ops->version, clp->cl_minorversion, | |
5140 | nfs4_client_id_uniquifier, | |
5141 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5142 | clp->cl_owner_id = str; |
5143 | return 0; | |
5144 | } | |
5145 | ||
5146 | static int | |
5147 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5148 | { |
873e3851 JL |
5149 | int result; |
5150 | size_t len; | |
5151 | char *str; | |
ceb3a16c TM |
5152 | |
5153 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5154 | return 0; |
6f2ea7f2 CL |
5155 | |
5156 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5157 | return nfs4_init_uniquifier_client_string(clp); |
5158 | ||
5159 | len = 10 + 10 + 1 + 10 + 1 + | |
5160 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5161 | ||
5162 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5163 | return -EINVAL; | |
5164 | ||
5165 | /* | |
5166 | * Since this string is allocated at mount time, and held until the | |
5167 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5168 | * about a memory-reclaim deadlock. | |
5169 | */ | |
5170 | str = kmalloc(len, GFP_KERNEL); | |
5171 | if (!str) | |
5172 | return -ENOMEM; | |
5173 | ||
5174 | result = scnprintf(str, len, "Linux NFSv%u.%u %s", | |
5175 | clp->rpc_ops->version, clp->cl_minorversion, | |
5176 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5177 | clp->cl_owner_id = str; |
5178 | return 0; | |
e984a55a CL |
5179 | } |
5180 | ||
706cb8db CL |
5181 | /* |
5182 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5183 | * services. Advertise one based on the address family of the | |
5184 | * clientaddr. | |
5185 | */ | |
5186 | static unsigned int | |
5187 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5188 | { | |
5189 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5190 | return scnprintf(buf, len, "tcp6"); | |
5191 | else | |
5192 | return scnprintf(buf, len, "tcp"); | |
5193 | } | |
5194 | ||
f11b2a1c JL |
5195 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5196 | { | |
5197 | struct nfs4_setclientid *sc = calldata; | |
5198 | ||
5199 | if (task->tk_status == 0) | |
5200 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5201 | } | |
5202 | ||
5203 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5204 | .rpc_call_done = nfs4_setclientid_done, | |
5205 | }; | |
5206 | ||
6bbb4ae8 CL |
5207 | /** |
5208 | * nfs4_proc_setclientid - Negotiate client ID | |
5209 | * @clp: state data structure | |
5210 | * @program: RPC program for NFSv4 callback service | |
5211 | * @port: IP port number for NFS4 callback service | |
5212 | * @cred: RPC credential to use for this call | |
5213 | * @res: where to place the result | |
5214 | * | |
5215 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5216 | */ | |
bb8b27e5 TM |
5217 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5218 | unsigned short port, struct rpc_cred *cred, | |
5219 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5220 | { |
5221 | nfs4_verifier sc_verifier; | |
5222 | struct nfs4_setclientid setclientid = { | |
5223 | .sc_verifier = &sc_verifier, | |
5224 | .sc_prog = program, | |
3a6bb738 | 5225 | .sc_clnt = clp, |
1da177e4 LT |
5226 | }; |
5227 | struct rpc_message msg = { | |
5228 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5229 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5230 | .rpc_resp = res, |
286d7d6a | 5231 | .rpc_cred = cred, |
1da177e4 | 5232 | }; |
f11b2a1c JL |
5233 | struct rpc_task *task; |
5234 | struct rpc_task_setup task_setup_data = { | |
5235 | .rpc_client = clp->cl_rpcclient, | |
5236 | .rpc_message = &msg, | |
5237 | .callback_ops = &nfs4_setclientid_ops, | |
5238 | .callback_data = &setclientid, | |
5239 | .flags = RPC_TASK_TIMEOUT, | |
5240 | }; | |
6bbb4ae8 | 5241 | int status; |
1da177e4 | 5242 | |
de734831 | 5243 | /* nfs_client_id4 */ |
f092075d | 5244 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5245 | |
5246 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5247 | status = nfs4_init_uniform_client_string(clp); | |
5248 | else | |
a3192688 | 5249 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5250 | |
5251 | if (status) | |
5252 | goto out; | |
3a6bb738 | 5253 | |
de734831 | 5254 | /* cb_client4 */ |
706cb8db CL |
5255 | setclientid.sc_netid_len = |
5256 | nfs4_init_callback_netid(clp, | |
5257 | setclientid.sc_netid, | |
5258 | sizeof(setclientid.sc_netid)); | |
de734831 | 5259 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5260 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5261 | clp->cl_ipaddr, port >> 8, port & 255); |
5262 | ||
3a6bb738 | 5263 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5264 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5265 | clp->cl_owner_id); |
f11b2a1c JL |
5266 | task = rpc_run_task(&task_setup_data); |
5267 | if (IS_ERR(task)) { | |
5268 | status = PTR_ERR(task); | |
5269 | goto out; | |
5270 | } | |
5271 | status = task->tk_status; | |
5272 | if (setclientid.sc_cred) { | |
5273 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5274 | put_rpccred(setclientid.sc_cred); | |
5275 | } | |
5276 | rpc_put_task(task); | |
5277 | out: | |
c6d01c6f | 5278 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5279 | dprintk("NFS reply setclientid: %d\n", status); |
5280 | return status; | |
1da177e4 LT |
5281 | } |
5282 | ||
6bbb4ae8 CL |
5283 | /** |
5284 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5285 | * @clp: state data structure | |
5286 | * @res: result of a previous SETCLIENTID | |
5287 | * @cred: RPC credential to use for this call | |
5288 | * | |
5289 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5290 | */ | |
fd954ae1 | 5291 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5292 | struct nfs4_setclientid_res *arg, |
5293 | struct rpc_cred *cred) | |
1da177e4 | 5294 | { |
1da177e4 LT |
5295 | struct rpc_message msg = { |
5296 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5297 | .rpc_argp = arg, |
286d7d6a | 5298 | .rpc_cred = cred, |
1da177e4 | 5299 | }; |
1da177e4 LT |
5300 | int status; |
5301 | ||
6bbb4ae8 CL |
5302 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5303 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5304 | clp->cl_clientid); | |
1bd714f2 | 5305 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5306 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5307 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5308 | return status; |
5309 | } | |
5310 | ||
fe650407 TM |
5311 | struct nfs4_delegreturndata { |
5312 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5313 | struct nfs4_delegreturnres res; |
fe650407 TM |
5314 | struct nfs_fh fh; |
5315 | nfs4_stateid stateid; | |
26e976a8 | 5316 | unsigned long timestamp; |
fa178f29 | 5317 | struct nfs_fattr fattr; |
fe650407 | 5318 | int rpc_status; |
039b756a PT |
5319 | struct inode *inode; |
5320 | bool roc; | |
5321 | u32 roc_barrier; | |
fe650407 TM |
5322 | }; |
5323 | ||
fe650407 TM |
5324 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5325 | { | |
5326 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5327 | |
14516c3a TM |
5328 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5329 | return; | |
938e1010 | 5330 | |
ca8acf8d | 5331 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5332 | switch (task->tk_status) { |
79708861 | 5333 | case 0: |
fa178f29 | 5334 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5335 | case -NFS4ERR_ADMIN_REVOKED: |
5336 | case -NFS4ERR_DELEG_REVOKED: | |
5337 | case -NFS4ERR_BAD_STATEID: | |
5338 | case -NFS4ERR_OLD_STATEID: | |
5339 | case -NFS4ERR_STALE_STATEID: | |
5340 | case -NFS4ERR_EXPIRED: | |
5341 | task->tk_status = 0; | |
039b756a PT |
5342 | if (data->roc) |
5343 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5344 | break; |
79708861 | 5345 | default: |
8478eaa1 N |
5346 | if (nfs4_async_handle_error(task, data->res.server, |
5347 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5348 | rpc_restart_call_prepare(task); |
79708861 RL |
5349 | return; |
5350 | } | |
5351 | } | |
5352 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5353 | } |
5354 | ||
5355 | static void nfs4_delegreturn_release(void *calldata) | |
5356 | { | |
039b756a | 5357 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5358 | struct inode *inode = data->inode; |
039b756a | 5359 | |
ea7c38fe TM |
5360 | if (inode) { |
5361 | if (data->roc) | |
5362 | pnfs_roc_release(inode); | |
5363 | nfs_iput_and_deactive(inode); | |
5364 | } | |
fe650407 TM |
5365 | kfree(calldata); |
5366 | } | |
5367 | ||
938e1010 AA |
5368 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5369 | { | |
5370 | struct nfs4_delegreturndata *d_data; | |
5371 | ||
5372 | d_data = (struct nfs4_delegreturndata *)data; | |
5373 | ||
500d701f PT |
5374 | if (nfs4_wait_on_layoutreturn(d_data->inode, task)) |
5375 | return; | |
5376 | ||
4ff376fe TM |
5377 | if (d_data->roc) |
5378 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5379 | |
d9afbd1b TM |
5380 | nfs4_setup_sequence(d_data->res.server, |
5381 | &d_data->args.seq_args, | |
5382 | &d_data->res.seq_res, | |
5383 | task); | |
938e1010 | 5384 | } |
938e1010 | 5385 | |
c8d149f3 | 5386 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5387 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5388 | .rpc_call_done = nfs4_delegreturn_done, |
5389 | .rpc_release = nfs4_delegreturn_release, | |
5390 | }; | |
5391 | ||
e6f81075 | 5392 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5393 | { |
5394 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5395 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5396 | struct rpc_task *task; |
5138fde0 TM |
5397 | struct rpc_message msg = { |
5398 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5399 | .rpc_cred = cred, | |
5400 | }; | |
c970aa85 TM |
5401 | struct rpc_task_setup task_setup_data = { |
5402 | .rpc_client = server->client, | |
5138fde0 | 5403 | .rpc_message = &msg, |
c970aa85 TM |
5404 | .callback_ops = &nfs4_delegreturn_ops, |
5405 | .flags = RPC_TASK_ASYNC, | |
5406 | }; | |
e6f81075 | 5407 | int status = 0; |
fe650407 | 5408 | |
8535b2be | 5409 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5410 | if (data == NULL) |
5411 | return -ENOMEM; | |
a9c92d6b | 5412 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5413 | data->args.fhandle = &data->fh; |
5414 | data->args.stateid = &data->stateid; | |
9e907fec | 5415 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5416 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5417 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5418 | data->res.fattr = &data->fattr; |
5419 | data->res.server = server; | |
5138fde0 | 5420 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5421 | data->timestamp = jiffies; |
fe650407 | 5422 | data->rpc_status = 0; |
ea7c38fe TM |
5423 | data->inode = nfs_igrab_and_active(inode); |
5424 | if (data->inode) | |
5425 | data->roc = nfs4_roc(inode); | |
fe650407 | 5426 | |
c970aa85 | 5427 | task_setup_data.callback_data = data; |
1174dd1f TM |
5428 | msg.rpc_argp = &data->args; |
5429 | msg.rpc_resp = &data->res; | |
c970aa85 | 5430 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5431 | if (IS_ERR(task)) |
fe650407 | 5432 | return PTR_ERR(task); |
e6f81075 TM |
5433 | if (!issync) |
5434 | goto out; | |
fe650407 | 5435 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5436 | if (status != 0) |
5437 | goto out; | |
5438 | status = data->rpc_status; | |
e144cbcc TM |
5439 | if (status == 0) |
5440 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5441 | else | |
5442 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5443 | out: |
e6b3c4db | 5444 | rpc_put_task(task); |
fe650407 | 5445 | return status; |
1da177e4 LT |
5446 | } |
5447 | ||
e6f81075 | 5448 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5449 | { |
5450 | struct nfs_server *server = NFS_SERVER(inode); | |
5451 | struct nfs4_exception exception = { }; | |
5452 | int err; | |
5453 | do { | |
e6f81075 | 5454 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5455 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5456 | switch (err) { |
5457 | case -NFS4ERR_STALE_STATEID: | |
5458 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5459 | case 0: |
5460 | return 0; | |
5461 | } | |
5462 | err = nfs4_handle_exception(server, err, &exception); | |
5463 | } while (exception.retry); | |
5464 | return err; | |
5465 | } | |
5466 | ||
5467 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5468 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5469 | ||
5470 | /* | |
5471 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5472 | */ | |
5473 | static unsigned long | |
5474 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5475 | { | |
416ad3c9 | 5476 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5477 | timeout <<= 1; |
5478 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5479 | return NFS4_LOCK_MAXTIMEOUT; | |
5480 | return timeout; | |
5481 | } | |
5482 | ||
1da177e4 LT |
5483 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5484 | { | |
5485 | struct inode *inode = state->inode; | |
5486 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5487 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5488 | struct nfs_lockt_args arg = { |
1da177e4 | 5489 | .fh = NFS_FH(inode), |
911d1aaf | 5490 | .fl = request, |
1da177e4 | 5491 | }; |
911d1aaf TM |
5492 | struct nfs_lockt_res res = { |
5493 | .denied = request, | |
1da177e4 LT |
5494 | }; |
5495 | struct rpc_message msg = { | |
5496 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5497 | .rpc_argp = &arg, | |
5498 | .rpc_resp = &res, | |
5499 | .rpc_cred = state->owner->so_cred, | |
5500 | }; | |
1da177e4 LT |
5501 | struct nfs4_lock_state *lsp; |
5502 | int status; | |
5503 | ||
911d1aaf | 5504 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5505 | status = nfs4_set_lock_state(state, request); |
5506 | if (status != 0) | |
5507 | goto out; | |
5508 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5509 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5510 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5511 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5512 | switch (status) { |
5513 | case 0: | |
5514 | request->fl_type = F_UNLCK; | |
5515 | break; | |
5516 | case -NFS4ERR_DENIED: | |
5517 | status = 0; | |
1da177e4 | 5518 | } |
70cc6487 | 5519 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5520 | request->fl_ops = NULL; |
8d0a8a9d | 5521 | out: |
1da177e4 LT |
5522 | return status; |
5523 | } | |
5524 | ||
5525 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5526 | { | |
5527 | struct nfs4_exception exception = { }; | |
5528 | int err; | |
5529 | ||
5530 | do { | |
d1b748a5 TM |
5531 | err = _nfs4_proc_getlk(state, cmd, request); |
5532 | trace_nfs4_get_lock(request, state, cmd, err); | |
5533 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5534 | &exception); |
5535 | } while (exception.retry); | |
5536 | return err; | |
5537 | } | |
5538 | ||
83bfff23 | 5539 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 LT |
5540 | { |
5541 | int res = 0; | |
5542 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5543 | case FL_POSIX: | |
83bfff23 | 5544 | res = posix_lock_inode_wait(inode, fl); |
1da177e4 LT |
5545 | break; |
5546 | case FL_FLOCK: | |
83bfff23 | 5547 | res = flock_lock_inode_wait(inode, fl); |
1da177e4 LT |
5548 | break; |
5549 | default: | |
5550 | BUG(); | |
5551 | } | |
1da177e4 LT |
5552 | return res; |
5553 | } | |
5554 | ||
faf5f49c | 5555 | struct nfs4_unlockdata { |
911d1aaf TM |
5556 | struct nfs_locku_args arg; |
5557 | struct nfs_locku_res res; | |
faf5f49c TM |
5558 | struct nfs4_lock_state *lsp; |
5559 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5560 | struct file_lock fl; |
5561 | const struct nfs_server *server; | |
26e976a8 | 5562 | unsigned long timestamp; |
faf5f49c TM |
5563 | }; |
5564 | ||
911d1aaf TM |
5565 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5566 | struct nfs_open_context *ctx, | |
5567 | struct nfs4_lock_state *lsp, | |
5568 | struct nfs_seqid *seqid) | |
5569 | { | |
5570 | struct nfs4_unlockdata *p; | |
5571 | struct inode *inode = lsp->ls_state->inode; | |
5572 | ||
8535b2be | 5573 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5574 | if (p == NULL) |
5575 | return NULL; | |
5576 | p->arg.fh = NFS_FH(inode); | |
5577 | p->arg.fl = &p->fl; | |
5578 | p->arg.seqid = seqid; | |
c1d51931 | 5579 | p->res.seqid = seqid; |
911d1aaf TM |
5580 | p->lsp = lsp; |
5581 | atomic_inc(&lsp->ls_count); | |
5582 | /* Ensure we don't close file until we're done freeing locks! */ | |
5583 | p->ctx = get_nfs_open_context(ctx); | |
5584 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5585 | p->server = NFS_SERVER(inode); | |
5586 | return p; | |
5587 | } | |
5588 | ||
06f814a3 | 5589 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5590 | { |
963d8fe5 | 5591 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5592 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5593 | nfs4_put_lock_state(calldata->lsp); |
5594 | put_nfs_open_context(calldata->ctx); | |
5595 | kfree(calldata); | |
faf5f49c TM |
5596 | } |
5597 | ||
963d8fe5 | 5598 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5599 | { |
963d8fe5 | 5600 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5601 | |
14516c3a TM |
5602 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5603 | return; | |
faf5f49c TM |
5604 | switch (task->tk_status) { |
5605 | case 0: | |
26e976a8 | 5606 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5607 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5608 | if (nfs4_update_lock_stateid(calldata->lsp, |
5609 | &calldata->res.stateid)) | |
5610 | break; | |
9e33bed5 TM |
5611 | case -NFS4ERR_BAD_STATEID: |
5612 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5613 | case -NFS4ERR_STALE_STATEID: |
5614 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5615 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5616 | &calldata->lsp->ls_stateid)) | |
5617 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5618 | break; |
5619 | default: | |
8478eaa1 N |
5620 | if (nfs4_async_handle_error(task, calldata->server, |
5621 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5622 | rpc_restart_call_prepare(task); |
faf5f49c | 5623 | } |
2b1bc308 | 5624 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5625 | } |
5626 | ||
4ce70ada | 5627 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5628 | { |
4ce70ada | 5629 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5630 | |
911d1aaf | 5631 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5632 | goto out_wait; |
425c1d4e | 5633 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5634 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5635 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5636 | goto out_no_action; |
faf5f49c | 5637 | } |
26e976a8 | 5638 | calldata->timestamp = jiffies; |
035168ab | 5639 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5640 | &calldata->arg.seq_args, |
2240a9e2 TM |
5641 | &calldata->res.seq_res, |
5642 | task) != 0) | |
5643 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5644 | return; |
5645 | out_no_action: | |
5646 | task->tk_action = NULL; | |
5647 | out_wait: | |
5648 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5649 | } |
5650 | ||
963d8fe5 | 5651 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5652 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5653 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5654 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5655 | }; |
5656 | ||
a5d16a4d TM |
5657 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5658 | struct nfs_open_context *ctx, | |
5659 | struct nfs4_lock_state *lsp, | |
5660 | struct nfs_seqid *seqid) | |
5661 | { | |
5662 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5663 | struct rpc_message msg = { |
5664 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5665 | .rpc_cred = ctx->cred, | |
5666 | }; | |
c970aa85 TM |
5667 | struct rpc_task_setup task_setup_data = { |
5668 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5669 | .rpc_message = &msg, |
c970aa85 | 5670 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5671 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5672 | .flags = RPC_TASK_ASYNC, |
5673 | }; | |
a5d16a4d | 5674 | |
fa940720 WAA |
5675 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5676 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5677 | ||
137d6aca FF |
5678 | /* Ensure this is an unlock - when canceling a lock, the |
5679 | * canceled lock is passed in, and it won't be an unlock. | |
5680 | */ | |
5681 | fl->fl_type = F_UNLCK; | |
5682 | ||
a5d16a4d TM |
5683 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5684 | if (data == NULL) { | |
5685 | nfs_free_seqid(seqid); | |
5686 | return ERR_PTR(-ENOMEM); | |
5687 | } | |
5688 | ||
a9c92d6b | 5689 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5690 | msg.rpc_argp = &data->arg; |
5691 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5692 | task_setup_data.callback_data = data; |
5693 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5694 | } |
5695 | ||
faf5f49c TM |
5696 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5697 | { | |
65b62a29 TM |
5698 | struct inode *inode = state->inode; |
5699 | struct nfs4_state_owner *sp = state->owner; | |
5700 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5701 | struct nfs_seqid *seqid; |
1da177e4 | 5702 | struct nfs4_lock_state *lsp; |
06f814a3 | 5703 | struct rpc_task *task; |
b4019c0e | 5704 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5705 | int status = 0; |
536ff0f8 | 5706 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5707 | |
8d0a8a9d | 5708 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5709 | /* Unlock _before_ we do the RPC call */ |
5710 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5711 | /* Exclude nfs_delegation_claim_locks() */ |
5712 | mutex_lock(&sp->so_delegreturn_mutex); | |
5713 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5714 | down_read(&nfsi->rwsem); |
83bfff23 | 5715 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5716 | up_read(&nfsi->rwsem); |
65b62a29 | 5717 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5718 | goto out; |
19e03c57 TM |
5719 | } |
5720 | up_read(&nfsi->rwsem); | |
65b62a29 | 5721 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5722 | if (status != 0) |
9b073574 TM |
5723 | goto out; |
5724 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5725 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5726 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5727 | goto out; | |
b4019c0e TM |
5728 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5729 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5730 | status = -ENOMEM; |
badc76dd | 5731 | if (IS_ERR(seqid)) |
9b073574 | 5732 | goto out; |
cd3758e3 | 5733 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5734 | status = PTR_ERR(task); |
5735 | if (IS_ERR(task)) | |
9b073574 | 5736 | goto out; |
a5d16a4d | 5737 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5738 | rpc_put_task(task); |
9b073574 | 5739 | out: |
536ff0f8 | 5740 | request->fl_flags = fl_flags; |
d1b748a5 | 5741 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5742 | return status; |
5743 | } | |
5744 | ||
a5d16a4d TM |
5745 | struct nfs4_lockdata { |
5746 | struct nfs_lock_args arg; | |
5747 | struct nfs_lock_res res; | |
5748 | struct nfs4_lock_state *lsp; | |
5749 | struct nfs_open_context *ctx; | |
5750 | struct file_lock fl; | |
26e976a8 | 5751 | unsigned long timestamp; |
a5d16a4d TM |
5752 | int rpc_status; |
5753 | int cancelled; | |
66179efe | 5754 | struct nfs_server *server; |
a5d16a4d TM |
5755 | }; |
5756 | ||
5757 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5758 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5759 | gfp_t gfp_mask) | |
1da177e4 | 5760 | { |
a5d16a4d TM |
5761 | struct nfs4_lockdata *p; |
5762 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5763 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5764 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5765 | |
8535b2be | 5766 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5767 | if (p == NULL) |
5768 | return NULL; | |
5769 | ||
5770 | p->arg.fh = NFS_FH(inode); | |
5771 | p->arg.fl = &p->fl; | |
8535b2be | 5772 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5773 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5774 | goto out_free; |
b4019c0e TM |
5775 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5776 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5777 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5778 | goto out_free_seqid; |
7539bbab | 5779 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5780 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5781 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5782 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5783 | p->lsp = lsp; |
66179efe | 5784 | p->server = server; |
a5d16a4d TM |
5785 | atomic_inc(&lsp->ls_count); |
5786 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5787 | get_file(fl->fl_file); |
a5d16a4d TM |
5788 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5789 | return p; | |
2f74c0a0 TM |
5790 | out_free_seqid: |
5791 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5792 | out_free: |
5793 | kfree(p); | |
5794 | return NULL; | |
5795 | } | |
5796 | ||
5797 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5798 | { | |
5799 | struct nfs4_lockdata *data = calldata; | |
5800 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5801 | |
3110ff80 | 5802 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5803 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5804 | goto out_wait; |
a5d16a4d | 5805 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5806 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5807 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5808 | goto out_release_lock_seqid; |
8fe72bac | 5809 | } |
425c1d4e TM |
5810 | nfs4_stateid_copy(&data->arg.open_stateid, |
5811 | &state->open_stateid); | |
a5d16a4d | 5812 | data->arg.new_lock_owner = 1; |
c1d51931 | 5813 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5814 | } else { |
2f74c0a0 | 5815 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5816 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5817 | &data->lsp->ls_stateid); | |
5818 | } | |
5d422301 TM |
5819 | if (!nfs4_valid_open_stateid(state)) { |
5820 | data->rpc_status = -EBADF; | |
5821 | task->tk_action = NULL; | |
5822 | goto out_release_open_seqid; | |
5823 | } | |
26e976a8 | 5824 | data->timestamp = jiffies; |
035168ab TM |
5825 | if (nfs4_setup_sequence(data->server, |
5826 | &data->arg.seq_args, | |
2240a9e2 | 5827 | &data->res.seq_res, |
d9afbd1b | 5828 | task) == 0) |
66179efe | 5829 | return; |
5d422301 | 5830 | out_release_open_seqid: |
2240a9e2 TM |
5831 | nfs_release_seqid(data->arg.open_seqid); |
5832 | out_release_lock_seqid: | |
5833 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5834 | out_wait: |
5835 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5836 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5837 | } |
5838 | ||
a5d16a4d TM |
5839 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5840 | { | |
5841 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5842 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5843 | |
3110ff80 | 5844 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5845 | |
14516c3a TM |
5846 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5847 | return; | |
66179efe | 5848 | |
a5d16a4d | 5849 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5850 | switch (task->tk_status) { |
5851 | case 0: | |
2b0143b5 | 5852 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5853 | data->timestamp); |
c69899a1 TM |
5854 | if (data->arg.new_lock) { |
5855 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5856 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5857 | rpc_restart_call_prepare(task); |
5858 | break; | |
5859 | } | |
5860 | } | |
39071e6f TM |
5861 | if (data->arg.new_lock_owner != 0) { |
5862 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5863 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5864 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5865 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5866 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5867 | break; |
5868 | case -NFS4ERR_BAD_STATEID: | |
5869 | case -NFS4ERR_OLD_STATEID: | |
5870 | case -NFS4ERR_STALE_STATEID: | |
5871 | case -NFS4ERR_EXPIRED: | |
5872 | if (data->arg.new_lock_owner != 0) { | |
5873 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5874 | &lsp->ls_state->open_stateid)) | |
5875 | rpc_restart_call_prepare(task); | |
5876 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5877 | &lsp->ls_stateid)) | |
5878 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5879 | } |
3110ff80 | 5880 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5881 | } |
5882 | ||
5883 | static void nfs4_lock_release(void *calldata) | |
5884 | { | |
5885 | struct nfs4_lockdata *data = calldata; | |
5886 | ||
3110ff80 | 5887 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5888 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5889 | if (data->cancelled != 0) { |
5890 | struct rpc_task *task; | |
5891 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5892 | data->arg.lock_seqid); | |
5893 | if (!IS_ERR(task)) | |
bf294b41 | 5894 | rpc_put_task_async(task); |
3110ff80 | 5895 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5896 | } else |
5897 | nfs_free_seqid(data->arg.lock_seqid); | |
5898 | nfs4_put_lock_state(data->lsp); | |
5899 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5900 | fput(data->fl.fl_file); |
a5d16a4d | 5901 | kfree(data); |
3110ff80 | 5902 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5903 | } |
5904 | ||
5905 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5906 | .rpc_call_prepare = nfs4_lock_prepare, | |
5907 | .rpc_call_done = nfs4_lock_done, | |
5908 | .rpc_release = nfs4_lock_release, | |
5909 | }; | |
5910 | ||
2bee72a6 TM |
5911 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5912 | { | |
2bee72a6 TM |
5913 | switch (error) { |
5914 | case -NFS4ERR_ADMIN_REVOKED: | |
5915 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5916 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5917 | if (new_lock_owner != 0 || |
795a88c9 | 5918 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5919 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5920 | break; |
5921 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5922 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5923 | case -NFS4ERR_EXPIRED: |
5924 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5925 | }; |
5926 | } | |
5927 | ||
afe6c27c | 5928 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5929 | { |
5930 | struct nfs4_lockdata *data; | |
5931 | struct rpc_task *task; | |
5138fde0 TM |
5932 | struct rpc_message msg = { |
5933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5934 | .rpc_cred = state->owner->so_cred, | |
5935 | }; | |
c970aa85 TM |
5936 | struct rpc_task_setup task_setup_data = { |
5937 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5938 | .rpc_message = &msg, |
c970aa85 | 5939 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5940 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5941 | .flags = RPC_TASK_ASYNC, |
5942 | }; | |
a5d16a4d TM |
5943 | int ret; |
5944 | ||
3110ff80 | 5945 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5946 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5947 | fl->fl_u.nfs4_fl.owner, |
5948 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5949 | if (data == NULL) |
5950 | return -ENOMEM; | |
5951 | if (IS_SETLKW(cmd)) | |
5952 | data->arg.block = 1; | |
a9c92d6b | 5953 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5954 | msg.rpc_argp = &data->arg; |
5955 | msg.rpc_resp = &data->res; | |
c970aa85 | 5956 | task_setup_data.callback_data = data; |
8fe72bac TM |
5957 | if (recovery_type > NFS_LOCK_NEW) { |
5958 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5959 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5960 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5961 | } else |
5962 | data->arg.new_lock = 1; | |
c970aa85 | 5963 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5964 | if (IS_ERR(task)) |
a5d16a4d | 5965 | return PTR_ERR(task); |
a5d16a4d TM |
5966 | ret = nfs4_wait_for_completion_rpc_task(task); |
5967 | if (ret == 0) { | |
5968 | ret = data->rpc_status; | |
2bee72a6 TM |
5969 | if (ret) |
5970 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5971 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5972 | } else |
5973 | data->cancelled = 1; | |
e6b3c4db | 5974 | rpc_put_task(task); |
3110ff80 | 5975 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5976 | return ret; |
1da177e4 LT |
5977 | } |
5978 | ||
5979 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5980 | { | |
202b50dc | 5981 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5982 | struct nfs4_exception exception = { |
5983 | .inode = state->inode, | |
5984 | }; | |
202b50dc TM |
5985 | int err; |
5986 | ||
5987 | do { | |
42a2d13e TM |
5988 | /* Cache the lock if possible... */ |
5989 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5990 | return 0; | |
afe6c27c | 5991 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5992 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5993 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5994 | break; |
5995 | nfs4_handle_exception(server, err, &exception); | |
5996 | } while (exception.retry); | |
5997 | return err; | |
1da177e4 LT |
5998 | } |
5999 | ||
6000 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6001 | { | |
202b50dc | 6002 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
6003 | struct nfs4_exception exception = { |
6004 | .inode = state->inode, | |
6005 | }; | |
202b50dc TM |
6006 | int err; |
6007 | ||
6bfc93ef TM |
6008 | err = nfs4_set_lock_state(state, request); |
6009 | if (err != 0) | |
6010 | return err; | |
f6de7a39 | 6011 | if (!recover_lost_locks) { |
ef1820f9 N |
6012 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
6013 | return 0; | |
6014 | } | |
202b50dc | 6015 | do { |
42a2d13e TM |
6016 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
6017 | return 0; | |
afe6c27c | 6018 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 6019 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
6020 | switch (err) { |
6021 | default: | |
6022 | goto out; | |
6023 | case -NFS4ERR_GRACE: | |
6024 | case -NFS4ERR_DELAY: | |
6025 | nfs4_handle_exception(server, err, &exception); | |
6026 | err = 0; | |
6027 | } | |
202b50dc | 6028 | } while (exception.retry); |
a9ed2e25 | 6029 | out: |
202b50dc | 6030 | return err; |
1da177e4 LT |
6031 | } |
6032 | ||
f062eb6c | 6033 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
6034 | /** |
6035 | * nfs41_check_expired_locks - possibly free a lock stateid | |
6036 | * | |
6037 | * @state: NFSv4 state for an inode | |
6038 | * | |
6039 | * Returns NFS_OK if recovery for this stateid is now finished. | |
6040 | * Otherwise a negative NFS4ERR value is returned. | |
6041 | */ | |
b01dd1d8 | 6042 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 6043 | { |
eb64cf96 | 6044 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 6045 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
6046 | struct nfs_server *server = NFS_SERVER(state->inode); |
6047 | ||
b01dd1d8 | 6048 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 6049 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
6050 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
6051 | ||
6052 | status = nfs41_test_stateid(server, | |
6053 | &lsp->ls_stateid, | |
6054 | cred); | |
08cb47fa | 6055 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 6056 | if (status != NFS_OK) { |
3e60ffdd CL |
6057 | /* Free the stateid unless the server |
6058 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
6059 | if (status != -NFS4ERR_BAD_STATEID) |
6060 | nfs41_free_stateid(server, | |
ab7cb0df TM |
6061 | &lsp->ls_stateid, |
6062 | cred); | |
795a88c9 | 6063 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
6064 | ret = status; |
6065 | } | |
6066 | } | |
6067 | }; | |
6068 | ||
6069 | return ret; | |
6070 | } | |
6071 | ||
6072 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6073 | { | |
6074 | int status = NFS_OK; | |
6075 | ||
6076 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
6077 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
6078 | if (status != NFS_OK) |
6079 | status = nfs4_lock_expired(state, request); | |
6080 | return status; | |
f062eb6c BS |
6081 | } |
6082 | #endif | |
6083 | ||
1da177e4 LT |
6084 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6085 | { | |
19e03c57 | 6086 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 6087 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6088 | int status = -ENOLCK; |
1da177e4 | 6089 | |
8e469ebd TM |
6090 | if ((fl_flags & FL_POSIX) && |
6091 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6092 | goto out; | |
6bfc93ef | 6093 | /* Is this a delegated open? */ |
6bfc93ef TM |
6094 | status = nfs4_set_lock_state(state, request); |
6095 | if (status != 0) | |
6096 | goto out; | |
01c3b861 | 6097 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6098 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6099 | if (status < 0) |
6100 | goto out; | |
19e03c57 | 6101 | down_read(&nfsi->rwsem); |
01c3b861 | 6102 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6103 | /* Yes: cache locks! */ |
01c3b861 | 6104 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6105 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6106 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6107 | up_read(&nfsi->rwsem); |
9a99af49 | 6108 | goto out; |
9a99af49 | 6109 | } |
19e03c57 | 6110 | up_read(&nfsi->rwsem); |
c69899a1 | 6111 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6112 | out: |
6113 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6114 | return status; |
6115 | } | |
6116 | ||
6117 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6118 | { | |
a1d0b5ee TM |
6119 | struct nfs4_exception exception = { |
6120 | .state = state, | |
05ffe24f | 6121 | .inode = state->inode, |
a1d0b5ee | 6122 | }; |
1da177e4 LT |
6123 | int err; |
6124 | ||
6125 | do { | |
965b5d67 | 6126 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 6127 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
6128 | if (err == -NFS4ERR_DENIED) |
6129 | err = -EAGAIN; | |
1da177e4 | 6130 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6131 | err, &exception); |
1da177e4 LT |
6132 | } while (exception.retry); |
6133 | return err; | |
6134 | } | |
6135 | ||
6136 | static int | |
6137 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6138 | { | |
6139 | struct nfs_open_context *ctx; | |
6140 | struct nfs4_state *state; | |
6141 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6142 | int status; | |
6143 | ||
6144 | /* verify open state */ | |
cd3758e3 | 6145 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6146 | state = ctx->state; |
6147 | ||
6148 | if (request->fl_start < 0 || request->fl_end < 0) | |
6149 | return -EINVAL; | |
6150 | ||
d953126a TM |
6151 | if (IS_GETLK(cmd)) { |
6152 | if (state != NULL) | |
6153 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6154 | return 0; | |
6155 | } | |
1da177e4 LT |
6156 | |
6157 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6158 | return -EINVAL; | |
6159 | ||
d953126a TM |
6160 | if (request->fl_type == F_UNLCK) { |
6161 | if (state != NULL) | |
6162 | return nfs4_proc_unlck(state, cmd, request); | |
6163 | return 0; | |
6164 | } | |
1da177e4 | 6165 | |
d953126a TM |
6166 | if (state == NULL) |
6167 | return -ENOLCK; | |
55725513 TM |
6168 | /* |
6169 | * Don't rely on the VFS having checked the file open mode, | |
6170 | * since it won't do this for flock() locks. | |
6171 | */ | |
f44106e2 | 6172 | switch (request->fl_type) { |
55725513 TM |
6173 | case F_RDLCK: |
6174 | if (!(filp->f_mode & FMODE_READ)) | |
6175 | return -EBADF; | |
6176 | break; | |
6177 | case F_WRLCK: | |
6178 | if (!(filp->f_mode & FMODE_WRITE)) | |
6179 | return -EBADF; | |
6180 | } | |
6181 | ||
1da177e4 LT |
6182 | do { |
6183 | status = nfs4_proc_setlk(state, cmd, request); | |
6184 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6185 | break; | |
6186 | timeout = nfs4_set_lock_task_retry(timeout); | |
6187 | status = -ERESTARTSYS; | |
6188 | if (signalled()) | |
6189 | break; | |
6190 | } while(status < 0); | |
1da177e4 LT |
6191 | return status; |
6192 | } | |
6193 | ||
db4f2e63 | 6194 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6195 | { |
6196 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6197 | int err; |
6198 | ||
6199 | err = nfs4_set_lock_state(state, fl); | |
6200 | if (err != 0) | |
db4f2e63 | 6201 | return err; |
4a706fa0 | 6202 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6203 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6204 | } |
6b3b5496 | 6205 | |
cf470c3e TM |
6206 | struct nfs_release_lockowner_data { |
6207 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6208 | struct nfs_server *server; |
cf470c3e | 6209 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6210 | struct nfs_release_lockowner_res res; |
60ea6812 | 6211 | unsigned long timestamp; |
cf470c3e TM |
6212 | }; |
6213 | ||
fbd4bfd1 CL |
6214 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6215 | { | |
6216 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6217 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6218 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6219 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6220 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6221 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6222 | } |
6223 | ||
6224 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6225 | { | |
6226 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6227 | struct nfs_server *server = data->server; |
6228 | ||
b7e63a10 | 6229 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6230 | |
6231 | switch (task->tk_status) { | |
6232 | case 0: | |
6233 | renew_lease(server, data->timestamp); | |
6234 | break; | |
6235 | case -NFS4ERR_STALE_CLIENTID: | |
6236 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6237 | nfs4_schedule_lease_recovery(server->nfs_client); |
6238 | break; | |
60ea6812 CL |
6239 | case -NFS4ERR_LEASE_MOVED: |
6240 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6241 | if (nfs4_async_handle_error(task, server, |
6242 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6243 | rpc_restart_call_prepare(task); |
6244 | } | |
fbd4bfd1 CL |
6245 | } |
6246 | ||
d3c7b7cc TM |
6247 | static void nfs4_release_lockowner_release(void *calldata) |
6248 | { | |
cf470c3e | 6249 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6250 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6251 | kfree(calldata); |
6252 | } | |
6253 | ||
17280175 | 6254 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6255 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6256 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6257 | .rpc_release = nfs4_release_lockowner_release, |
6258 | }; | |
6259 | ||
f1cdae87 JL |
6260 | static void |
6261 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6262 | { |
cf470c3e | 6263 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6264 | struct rpc_message msg = { |
6265 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6266 | }; | |
6267 | ||
6268 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6269 | return; |
fbd4bfd1 | 6270 | |
cf470c3e TM |
6271 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6272 | if (!data) | |
f1cdae87 | 6273 | return; |
cf470c3e | 6274 | data->lsp = lsp; |
5ae67c4f | 6275 | data->server = server; |
cf470c3e TM |
6276 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6277 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6278 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6279 | |
cf470c3e | 6280 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6281 | msg.rpc_resp = &data->res; |
6282 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6283 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6284 | } |
6285 | ||
aa1870af BF |
6286 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6287 | ||
64c2ce8b AK |
6288 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
6289 | const void *buf, size_t buflen, | |
6290 | int flags, int type) | |
6b3b5496 | 6291 | { |
64c2ce8b AK |
6292 | if (strcmp(key, "") != 0) |
6293 | return -EINVAL; | |
4b580ee3 | 6294 | |
2b0143b5 | 6295 | return nfs4_proc_set_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6296 | } |
6297 | ||
64c2ce8b AK |
6298 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
6299 | void *buf, size_t buflen, int type) | |
6b3b5496 | 6300 | { |
64c2ce8b AK |
6301 | if (strcmp(key, "") != 0) |
6302 | return -EINVAL; | |
aa1870af | 6303 | |
2b0143b5 | 6304 | return nfs4_proc_get_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6305 | } |
6306 | ||
64c2ce8b AK |
6307 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
6308 | size_t list_len, const char *name, | |
6309 | size_t name_len, int type) | |
6b3b5496 | 6310 | { |
64c2ce8b | 6311 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 6312 | |
2b0143b5 | 6313 | if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)))) |
096455a2 | 6314 | return 0; |
64c2ce8b AK |
6315 | |
6316 | if (list && len <= list_len) | |
6317 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 6318 | return len; |
6b3b5496 BF |
6319 | } |
6320 | ||
c9bccef6 DQ |
6321 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6322 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
6323 | { | |
6324 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
6325 | } | |
6326 | ||
6327 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
6328 | const void *buf, size_t buflen, | |
6329 | int flags, int type) | |
6330 | { | |
6331 | if (security_ismaclabel(key)) | |
6332 | return nfs4_set_security_label(dentry, buf, buflen); | |
6333 | ||
6334 | return -EOPNOTSUPP; | |
6335 | } | |
6336 | ||
6337 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
6338 | void *buf, size_t buflen, int type) | |
6339 | { | |
6340 | if (security_ismaclabel(key)) | |
2b0143b5 | 6341 | return nfs4_get_security_label(d_inode(dentry), buf, buflen); |
c9bccef6 DQ |
6342 | return -EOPNOTSUPP; |
6343 | } | |
6344 | ||
6345 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
6346 | size_t list_len, const char *name, | |
6347 | size_t name_len, int type) | |
6348 | { | |
6349 | size_t len = 0; | |
6350 | ||
2b0143b5 DH |
6351 | if (nfs_server_capable(d_inode(dentry), NFS_CAP_SECURITY_LABEL)) { |
6352 | len = security_inode_listsecurity(d_inode(dentry), NULL, 0); | |
c9bccef6 | 6353 | if (list && len <= list_len) |
2b0143b5 | 6354 | security_inode_listsecurity(d_inode(dentry), list, len); |
c9bccef6 DQ |
6355 | } |
6356 | return len; | |
6357 | } | |
6358 | ||
6359 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6360 | .prefix = XATTR_SECURITY_PREFIX, | |
6361 | .list = nfs4_xattr_list_nfs4_label, | |
6362 | .get = nfs4_xattr_get_nfs4_label, | |
6363 | .set = nfs4_xattr_set_nfs4_label, | |
6364 | }; | |
6365 | #endif | |
6366 | ||
6367 | ||
533eb461 AA |
6368 | /* |
6369 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6370 | */ | |
69aaaae1 TM |
6371 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6372 | { | |
533eb461 AA |
6373 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6374 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6375 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6376 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6377 | return; |
6378 | ||
6379 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6380 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6381 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6382 | fattr->nlink = 2; | |
6383 | } | |
6384 | ||
f05d147f BS |
6385 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6386 | const struct qstr *name, | |
6387 | struct nfs4_fs_locations *fs_locations, | |
6388 | struct page *page) | |
683b57b4 TM |
6389 | { |
6390 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6391 | u32 bitmask[3] = { |
361e624f | 6392 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6393 | }; |
6394 | struct nfs4_fs_locations_arg args = { | |
6395 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6396 | .name = name, |
683b57b4 TM |
6397 | .page = page, |
6398 | .bitmask = bitmask, | |
6399 | }; | |
22958463 BH |
6400 | struct nfs4_fs_locations_res res = { |
6401 | .fs_locations = fs_locations, | |
6402 | }; | |
683b57b4 TM |
6403 | struct rpc_message msg = { |
6404 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6405 | .rpc_argp = &args, | |
22958463 | 6406 | .rpc_resp = &res, |
683b57b4 TM |
6407 | }; |
6408 | int status; | |
6409 | ||
3110ff80 | 6410 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6411 | |
6412 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6413 | * is not supported */ | |
6414 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6415 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6416 | else | |
6417 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6418 | ||
c228fd3a | 6419 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6420 | fs_locations->server = server; |
830b8e33 | 6421 | fs_locations->nlocations = 0; |
f05d147f | 6422 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6423 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6424 | return status; |
6425 | } | |
6426 | ||
f05d147f BS |
6427 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6428 | const struct qstr *name, | |
6429 | struct nfs4_fs_locations *fs_locations, | |
6430 | struct page *page) | |
db0a9593 BS |
6431 | { |
6432 | struct nfs4_exception exception = { }; | |
6433 | int err; | |
6434 | do { | |
078ea3df TM |
6435 | err = _nfs4_proc_fs_locations(client, dir, name, |
6436 | fs_locations, page); | |
6437 | trace_nfs4_get_fs_locations(dir, name, err); | |
6438 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6439 | &exception); |
6440 | } while (exception.retry); | |
6441 | return err; | |
6442 | } | |
6443 | ||
b03d735b CL |
6444 | /* |
6445 | * This operation also signals the server that this client is | |
6446 | * performing migration recovery. The server can stop returning | |
6447 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6448 | * appended to this compound to identify the client ID which is | |
6449 | * performing recovery. | |
6450 | */ | |
6451 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6452 | struct nfs4_fs_locations *locations, | |
6453 | struct page *page, struct rpc_cred *cred) | |
6454 | { | |
6455 | struct nfs_server *server = NFS_SERVER(inode); | |
6456 | struct rpc_clnt *clnt = server->client; | |
6457 | u32 bitmask[2] = { | |
6458 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6459 | }; | |
6460 | struct nfs4_fs_locations_arg args = { | |
6461 | .clientid = server->nfs_client->cl_clientid, | |
6462 | .fh = NFS_FH(inode), | |
6463 | .page = page, | |
6464 | .bitmask = bitmask, | |
6465 | .migration = 1, /* skip LOOKUP */ | |
6466 | .renew = 1, /* append RENEW */ | |
6467 | }; | |
6468 | struct nfs4_fs_locations_res res = { | |
6469 | .fs_locations = locations, | |
6470 | .migration = 1, | |
6471 | .renew = 1, | |
6472 | }; | |
6473 | struct rpc_message msg = { | |
6474 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6475 | .rpc_argp = &args, | |
6476 | .rpc_resp = &res, | |
6477 | .rpc_cred = cred, | |
6478 | }; | |
6479 | unsigned long now = jiffies; | |
6480 | int status; | |
6481 | ||
6482 | nfs_fattr_init(&locations->fattr); | |
6483 | locations->server = server; | |
6484 | locations->nlocations = 0; | |
6485 | ||
6486 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6487 | nfs4_set_sequence_privileged(&args.seq_args); | |
6488 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6489 | &args.seq_args, &res.seq_res); | |
6490 | if (status) | |
6491 | return status; | |
6492 | ||
6493 | renew_lease(server, now); | |
6494 | return 0; | |
6495 | } | |
6496 | ||
6497 | #ifdef CONFIG_NFS_V4_1 | |
6498 | ||
6499 | /* | |
6500 | * This operation also signals the server that this client is | |
6501 | * performing migration recovery. The server can stop asserting | |
6502 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6503 | * performing this operation is identified in the SEQUENCE | |
6504 | * operation in this compound. | |
6505 | * | |
6506 | * When the client supports GETATTR(fs_locations_info), it can | |
6507 | * be plumbed in here. | |
6508 | */ | |
6509 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6510 | struct nfs4_fs_locations *locations, | |
6511 | struct page *page, struct rpc_cred *cred) | |
6512 | { | |
6513 | struct nfs_server *server = NFS_SERVER(inode); | |
6514 | struct rpc_clnt *clnt = server->client; | |
6515 | u32 bitmask[2] = { | |
6516 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6517 | }; | |
6518 | struct nfs4_fs_locations_arg args = { | |
6519 | .fh = NFS_FH(inode), | |
6520 | .page = page, | |
6521 | .bitmask = bitmask, | |
6522 | .migration = 1, /* skip LOOKUP */ | |
6523 | }; | |
6524 | struct nfs4_fs_locations_res res = { | |
6525 | .fs_locations = locations, | |
6526 | .migration = 1, | |
6527 | }; | |
6528 | struct rpc_message msg = { | |
6529 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6530 | .rpc_argp = &args, | |
6531 | .rpc_resp = &res, | |
6532 | .rpc_cred = cred, | |
6533 | }; | |
6534 | int status; | |
6535 | ||
6536 | nfs_fattr_init(&locations->fattr); | |
6537 | locations->server = server; | |
6538 | locations->nlocations = 0; | |
6539 | ||
6540 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6541 | nfs4_set_sequence_privileged(&args.seq_args); | |
6542 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6543 | &args.seq_args, &res.seq_res); | |
6544 | if (status == NFS4_OK && | |
6545 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6546 | status = -NFS4ERR_LEASE_MOVED; | |
6547 | return status; | |
6548 | } | |
6549 | ||
6550 | #endif /* CONFIG_NFS_V4_1 */ | |
6551 | ||
6552 | /** | |
6553 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6554 | * @inode: inode on FSID that is migrating | |
6555 | * @locations: result of query | |
6556 | * @page: buffer | |
6557 | * @cred: credential to use for this operation | |
6558 | * | |
6559 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6560 | * operation failed, or a negative errno if a local error occurred. | |
6561 | * | |
6562 | * On success, "locations" is filled in, but if the server has | |
6563 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6564 | * asserted. | |
6565 | * | |
6566 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6567 | * from this client that require migration recovery. | |
6568 | */ | |
6569 | int nfs4_proc_get_locations(struct inode *inode, | |
6570 | struct nfs4_fs_locations *locations, | |
6571 | struct page *page, struct rpc_cred *cred) | |
6572 | { | |
6573 | struct nfs_server *server = NFS_SERVER(inode); | |
6574 | struct nfs_client *clp = server->nfs_client; | |
6575 | const struct nfs4_mig_recovery_ops *ops = | |
6576 | clp->cl_mvops->mig_recovery_ops; | |
6577 | struct nfs4_exception exception = { }; | |
6578 | int status; | |
6579 | ||
6580 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6581 | (unsigned long long)server->fsid.major, | |
6582 | (unsigned long long)server->fsid.minor, | |
6583 | clp->cl_hostname); | |
6584 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6585 | ||
6586 | do { | |
6587 | status = ops->get_locations(inode, locations, page, cred); | |
6588 | if (status != -NFS4ERR_DELAY) | |
6589 | break; | |
6590 | nfs4_handle_exception(server, status, &exception); | |
6591 | } while (exception.retry); | |
6592 | return status; | |
6593 | } | |
6594 | ||
44c99933 CL |
6595 | /* |
6596 | * This operation also signals the server that this client is | |
6597 | * performing "lease moved" recovery. The server can stop | |
6598 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6599 | * is appended to this compound to identify the client ID which is | |
6600 | * performing recovery. | |
6601 | */ | |
6602 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6603 | { | |
6604 | struct nfs_server *server = NFS_SERVER(inode); | |
6605 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6606 | struct rpc_clnt *clnt = server->client; | |
6607 | struct nfs4_fsid_present_arg args = { | |
6608 | .fh = NFS_FH(inode), | |
6609 | .clientid = clp->cl_clientid, | |
6610 | .renew = 1, /* append RENEW */ | |
6611 | }; | |
6612 | struct nfs4_fsid_present_res res = { | |
6613 | .renew = 1, | |
6614 | }; | |
6615 | struct rpc_message msg = { | |
6616 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6617 | .rpc_argp = &args, | |
6618 | .rpc_resp = &res, | |
6619 | .rpc_cred = cred, | |
6620 | }; | |
6621 | unsigned long now = jiffies; | |
6622 | int status; | |
6623 | ||
6624 | res.fh = nfs_alloc_fhandle(); | |
6625 | if (res.fh == NULL) | |
6626 | return -ENOMEM; | |
6627 | ||
6628 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6629 | nfs4_set_sequence_privileged(&args.seq_args); | |
6630 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6631 | &args.seq_args, &res.seq_res); | |
6632 | nfs_free_fhandle(res.fh); | |
6633 | if (status) | |
6634 | return status; | |
6635 | ||
6636 | do_renew_lease(clp, now); | |
6637 | return 0; | |
6638 | } | |
6639 | ||
6640 | #ifdef CONFIG_NFS_V4_1 | |
6641 | ||
6642 | /* | |
6643 | * This operation also signals the server that this client is | |
6644 | * performing "lease moved" recovery. The server can stop asserting | |
6645 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6646 | * this operation is identified in the SEQUENCE operation in this | |
6647 | * compound. | |
6648 | */ | |
6649 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6650 | { | |
6651 | struct nfs_server *server = NFS_SERVER(inode); | |
6652 | struct rpc_clnt *clnt = server->client; | |
6653 | struct nfs4_fsid_present_arg args = { | |
6654 | .fh = NFS_FH(inode), | |
6655 | }; | |
6656 | struct nfs4_fsid_present_res res = { | |
6657 | }; | |
6658 | struct rpc_message msg = { | |
6659 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6660 | .rpc_argp = &args, | |
6661 | .rpc_resp = &res, | |
6662 | .rpc_cred = cred, | |
6663 | }; | |
6664 | int status; | |
6665 | ||
6666 | res.fh = nfs_alloc_fhandle(); | |
6667 | if (res.fh == NULL) | |
6668 | return -ENOMEM; | |
6669 | ||
6670 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6671 | nfs4_set_sequence_privileged(&args.seq_args); | |
6672 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6673 | &args.seq_args, &res.seq_res); | |
6674 | nfs_free_fhandle(res.fh); | |
6675 | if (status == NFS4_OK && | |
6676 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6677 | status = -NFS4ERR_LEASE_MOVED; | |
6678 | return status; | |
6679 | } | |
6680 | ||
6681 | #endif /* CONFIG_NFS_V4_1 */ | |
6682 | ||
6683 | /** | |
6684 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6685 | * @inode: inode on FSID to check | |
6686 | * @cred: credential to use for this operation | |
6687 | * | |
6688 | * Server indicates whether the FSID is present, moved, or not | |
6689 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6690 | * condition for this client ID. | |
6691 | * | |
6692 | * Returns NFS4_OK if the FSID is present on this server, | |
6693 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6694 | * NFS4ERR code if some error occurred on the server, or a | |
6695 | * negative errno if a local failure occurred. | |
6696 | */ | |
6697 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6698 | { | |
6699 | struct nfs_server *server = NFS_SERVER(inode); | |
6700 | struct nfs_client *clp = server->nfs_client; | |
6701 | const struct nfs4_mig_recovery_ops *ops = | |
6702 | clp->cl_mvops->mig_recovery_ops; | |
6703 | struct nfs4_exception exception = { }; | |
6704 | int status; | |
6705 | ||
6706 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6707 | (unsigned long long)server->fsid.major, | |
6708 | (unsigned long long)server->fsid.minor, | |
6709 | clp->cl_hostname); | |
6710 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6711 | ||
6712 | do { | |
6713 | status = ops->fsid_present(inode, cred); | |
6714 | if (status != -NFS4ERR_DELAY) | |
6715 | break; | |
6716 | nfs4_handle_exception(server, status, &exception); | |
6717 | } while (exception.retry); | |
6718 | return status; | |
6719 | } | |
6720 | ||
5ec16a85 | 6721 | /** |
a5250def WAA |
6722 | * If 'use_integrity' is true and the state managment nfs_client |
6723 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6724 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6725 | * Considerations sections. Otherwise, just use the user cred with the | |
6726 | * filesystem's rpc_client. | |
5ec16a85 | 6727 | */ |
a5250def | 6728 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6729 | { |
6730 | int status; | |
6731 | struct nfs4_secinfo_arg args = { | |
6732 | .dir_fh = NFS_FH(dir), | |
6733 | .name = name, | |
6734 | }; | |
6735 | struct nfs4_secinfo_res res = { | |
6736 | .flavors = flavors, | |
6737 | }; | |
6738 | struct rpc_message msg = { | |
6739 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6740 | .rpc_argp = &args, | |
6741 | .rpc_resp = &res, | |
6742 | }; | |
a5250def | 6743 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6744 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6745 | |
6746 | if (use_integrity) { | |
6747 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6748 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6749 | msg.rpc_cred = cred; | |
a5250def | 6750 | } |
5a5ea0d4 BS |
6751 | |
6752 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6753 | |
6754 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6755 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6756 | ||
a5250def WAA |
6757 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6758 | &res.seq_res, 0); | |
5a5ea0d4 | 6759 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6760 | |
7cb852df WAA |
6761 | if (cred) |
6762 | put_rpccred(cred); | |
a5250def | 6763 | |
5a5ea0d4 BS |
6764 | return status; |
6765 | } | |
6766 | ||
72de53ec BS |
6767 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6768 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6769 | { |
6770 | struct nfs4_exception exception = { }; | |
6771 | int err; | |
6772 | do { | |
a5250def WAA |
6773 | err = -NFS4ERR_WRONGSEC; |
6774 | ||
6775 | /* try to use integrity protection with machine cred */ | |
6776 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6777 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6778 | ||
6779 | /* | |
6780 | * if unable to use integrity protection, or SECINFO with | |
6781 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6782 | * disallowed by spec, but exists in deployed servers) use | |
6783 | * the current filesystem's rpc_client and the user cred. | |
6784 | */ | |
6785 | if (err == -NFS4ERR_WRONGSEC) | |
6786 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6787 | ||
078ea3df TM |
6788 | trace_nfs4_secinfo(dir, name, err); |
6789 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6790 | &exception); |
6791 | } while (exception.retry); | |
6792 | return err; | |
6793 | } | |
6794 | ||
557134a3 | 6795 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6796 | /* |
6797 | * Check the exchange flags returned by the server for invalid flags, having | |
6798 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6799 | * DS flags set. | |
6800 | */ | |
6801 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6802 | { | |
6803 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6804 | goto out_inval; | |
6805 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6806 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6807 | goto out_inval; | |
6808 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6809 | goto out_inval; | |
6810 | return NFS_OK; | |
6811 | out_inval: | |
6812 | return -NFS4ERR_INVAL; | |
6813 | } | |
6814 | ||
78fe0f41 | 6815 | static bool |
79d4e1f0 CL |
6816 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6817 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6818 | { |
6819 | if (a->server_scope_sz == b->server_scope_sz && | |
6820 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6821 | return true; | |
6822 | ||
6823 | return false; | |
6824 | } | |
6825 | ||
7c44f1ae WAA |
6826 | /* |
6827 | * nfs4_proc_bind_conn_to_session() | |
6828 | * | |
6829 | * The 4.1 client currently uses the same TCP connection for the | |
6830 | * fore and backchannel. | |
6831 | */ | |
2cf047c9 | 6832 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6833 | { |
6834 | int status; | |
71a097c6 TM |
6835 | struct nfs41_bind_conn_to_session_args args = { |
6836 | .client = clp, | |
6837 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6838 | }; | |
7c44f1ae WAA |
6839 | struct nfs41_bind_conn_to_session_res res; |
6840 | struct rpc_message msg = { | |
6841 | .rpc_proc = | |
6842 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6843 | .rpc_argp = &args, |
7c44f1ae | 6844 | .rpc_resp = &res, |
2cf047c9 | 6845 | .rpc_cred = cred, |
7c44f1ae WAA |
6846 | }; |
6847 | ||
6848 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6849 | |
71a097c6 TM |
6850 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6851 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6852 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae WAA |
6853 | |
6854 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6855 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6856 | if (status == 0) { |
71a097c6 | 6857 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6858 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6859 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6860 | status = -EIO; | |
71a097c6 | 6861 | goto out; |
7c44f1ae | 6862 | } |
71a097c6 | 6863 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6864 | dprintk("NFS: %s: Unexpected direction from server\n", |
6865 | __func__); | |
6866 | status = -EIO; | |
71a097c6 | 6867 | goto out; |
7c44f1ae | 6868 | } |
71a097c6 | 6869 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6870 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6871 | __func__); | |
6872 | status = -EIO; | |
71a097c6 | 6873 | goto out; |
7c44f1ae WAA |
6874 | } |
6875 | } | |
7c44f1ae WAA |
6876 | out: |
6877 | dprintk("<-- %s status= %d\n", __func__, status); | |
6878 | return status; | |
6879 | } | |
6880 | ||
99fe60d0 | 6881 | /* |
fa940720 WAA |
6882 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6883 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6884 | */ |
6885 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6886 | .how = SP4_MACH_CRED, | |
6887 | .enforce.u.words = { | |
6888 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6889 | 1 << (OP_EXCHANGE_ID - 32) | | |
6890 | 1 << (OP_CREATE_SESSION - 32) | | |
6891 | 1 << (OP_DESTROY_SESSION - 32) | | |
6892 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6893 | }, |
6894 | .allow.u.words = { | |
6895 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6896 | 1 << (OP_LOCKU) | |
6897 | 1 << (OP_COMMIT), | |
8b5bee2e | 6898 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6899 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6900 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6901 | 1 << (OP_FREE_STATEID - 32) | |
6902 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6903 | } |
6904 | }; | |
6905 | ||
6906 | /* | |
6907 | * Select the state protection mode for client `clp' given the server results | |
6908 | * from exchange_id in `sp'. | |
99fe60d0 | 6909 | * |
2031cd1a WAA |
6910 | * Returns 0 on success, negative errno otherwise. |
6911 | */ | |
6912 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6913 | struct nfs41_state_protection *sp) | |
6914 | { | |
6915 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6916 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6917 | 1 << (OP_EXCHANGE_ID - 32) | | |
6918 | 1 << (OP_CREATE_SESSION - 32) | | |
6919 | 1 << (OP_DESTROY_SESSION - 32) | | |
6920 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6921 | }; | |
6922 | unsigned int i; | |
6923 | ||
6924 | if (sp->how == SP4_MACH_CRED) { | |
6925 | /* Print state protect result */ | |
6926 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6927 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6928 | if (test_bit(i, sp->enforce.u.longs)) | |
6929 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6930 | if (test_bit(i, sp->allow.u.longs)) | |
6931 | dfprintk(MOUNT, " allow op %d\n", i); | |
6932 | } | |
6933 | ||
6934 | /* make sure nothing is on enforce list that isn't supported */ | |
6935 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6936 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6937 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6938 | return -EINVAL; | |
6939 | } | |
6940 | } | |
6941 | ||
6942 | /* | |
6943 | * Minimal mode - state operations are allowed to use machine | |
6944 | * credential. Note this already happens by default, so the | |
6945 | * client doesn't have to do anything more than the negotiation. | |
6946 | * | |
6947 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6948 | * we're already using the machine cred for exchange_id | |
6949 | * and will never use a different cred. | |
6950 | */ | |
6951 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6952 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6953 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6954 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6955 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6956 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6957 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6958 | } else { | |
6959 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6960 | return -EINVAL; | |
6961 | } | |
fa940720 WAA |
6962 | |
6963 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6964 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6965 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6966 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6967 | } | |
8b5bee2e WAA |
6968 | |
6969 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6970 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6971 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6972 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6973 | } | |
3787d506 WAA |
6974 | |
6975 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6976 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6977 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6978 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6979 | } | |
8c21c62c WAA |
6980 | |
6981 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6982 | dfprintk(MOUNT, " write mode enabled\n"); | |
6983 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6984 | } | |
6985 | ||
6986 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6987 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6988 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6989 | } | |
2031cd1a WAA |
6990 | } |
6991 | ||
6992 | return 0; | |
6993 | } | |
6994 | ||
6995 | /* | |
6996 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6997 | * |
2031cd1a | 6998 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6999 | */ |
2031cd1a WAA |
7000 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
7001 | u32 sp4_how) | |
99fe60d0 BH |
7002 | { |
7003 | nfs4_verifier verifier; | |
7004 | struct nfs41_exchange_id_args args = { | |
cd93710e | 7005 | .verifier = &verifier, |
99fe60d0 | 7006 | .client = clp, |
cd3fadec | 7007 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 7008 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
7009 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
7010 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
7011 | #else | |
7012 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
7013 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
7014 | #endif | |
99fe60d0 BH |
7015 | }; |
7016 | struct nfs41_exchange_id_res res = { | |
32b01310 | 7017 | 0 |
99fe60d0 BH |
7018 | }; |
7019 | int status; | |
7020 | struct rpc_message msg = { | |
7021 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
7022 | .rpc_argp = &args, | |
7023 | .rpc_resp = &res, | |
7024 | .rpc_cred = cred, | |
7025 | }; | |
99fe60d0 | 7026 | |
f092075d | 7027 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
7028 | |
7029 | status = nfs4_init_uniform_client_string(clp); | |
7030 | if (status) | |
3a6bb738 | 7031 | goto out; |
3a6bb738 JL |
7032 | |
7033 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 7034 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 7035 | clp->cl_owner_id); |
99fe60d0 | 7036 | |
acdeb69d | 7037 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 7038 | GFP_NOFS); |
acdeb69d | 7039 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
7040 | status = -ENOMEM; |
7041 | goto out; | |
7042 | } | |
78fe0f41 | 7043 | |
79d4e1f0 | 7044 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 7045 | GFP_NOFS); |
177313f1 | 7046 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 7047 | status = -ENOMEM; |
acdeb69d | 7048 | goto out_server_owner; |
abe9a6d5 | 7049 | } |
78fe0f41 | 7050 | |
bbafffd2 | 7051 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 7052 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
7053 | status = -ENOMEM; |
7054 | goto out_server_scope; | |
7055 | } | |
7056 | ||
2031cd1a WAA |
7057 | switch (sp4_how) { |
7058 | case SP4_NONE: | |
7059 | args.state_protect.how = SP4_NONE; | |
7060 | break; | |
7061 | ||
7062 | case SP4_MACH_CRED: | |
7063 | args.state_protect = nfs4_sp4_mach_cred_request; | |
7064 | break; | |
7065 | ||
7066 | default: | |
7067 | /* unsupported! */ | |
7068 | WARN_ON_ONCE(1); | |
7069 | status = -EINVAL; | |
6b55970b | 7070 | goto out_impl_id; |
2031cd1a WAA |
7071 | } |
7072 | ||
1bd714f2 | 7073 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7074 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 7075 | if (status == 0) |
32b01310 | 7076 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 7077 | |
2031cd1a WAA |
7078 | if (status == 0) |
7079 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
7080 | ||
acdeb69d | 7081 | if (status == 0) { |
32b01310 | 7082 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
7083 | clp->cl_exchange_flags = res.flags; |
7084 | /* Client ID is not confirmed */ | |
7085 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7086 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7087 | &clp->cl_session->session_state); | |
32b01310 | 7088 | clp->cl_seqid = res.seqid; |
e11259f9 | 7089 | } |
32b01310 | 7090 | |
acdeb69d CL |
7091 | kfree(clp->cl_serverowner); |
7092 | clp->cl_serverowner = res.server_owner; | |
7093 | res.server_owner = NULL; | |
78fe0f41 | 7094 | |
7d2ed9ac | 7095 | /* use the most recent implementation id */ |
59155546 CL |
7096 | kfree(clp->cl_implid); |
7097 | clp->cl_implid = res.impl_id; | |
6b55970b | 7098 | res.impl_id = NULL; |
7d2ed9ac | 7099 | |
177313f1 | 7100 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7101 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7102 | res.server_scope)) { |
7103 | dprintk("%s: server_scope mismatch detected\n", | |
7104 | __func__); | |
7105 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7106 | kfree(clp->cl_serverscope); |
7107 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7108 | } |
7109 | ||
177313f1 | 7110 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7111 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7112 | res.server_scope = NULL; |
abe9a6d5 | 7113 | } |
6b55970b | 7114 | } |
7d2ed9ac | 7115 | |
6b55970b KM |
7116 | out_impl_id: |
7117 | kfree(res.impl_id); | |
7d2ed9ac | 7118 | out_server_scope: |
abe9a6d5 | 7119 | kfree(res.server_scope); |
6b55970b KM |
7120 | out_server_owner: |
7121 | kfree(res.server_owner); | |
abe9a6d5 | 7122 | out: |
177313f1 | 7123 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7124 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7125 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7126 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7127 | clp->cl_implid->date.seconds, |
7128 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7129 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7130 | return status; |
7131 | } | |
7132 | ||
2031cd1a WAA |
7133 | /* |
7134 | * nfs4_proc_exchange_id() | |
7135 | * | |
7136 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7137 | * | |
7138 | * Since the clientid has expired, all compounds using sessions | |
7139 | * associated with the stale clientid will be returning | |
7140 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7141 | * be in some phase of session reset. | |
7142 | * | |
7143 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7144 | */ | |
7145 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7146 | { | |
7147 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7148 | int status; | |
7149 | ||
7150 | /* try SP4_MACH_CRED if krb5i/p */ | |
7151 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7152 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7153 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7154 | if (!status) | |
7155 | return 0; | |
7156 | } | |
7157 | ||
7158 | /* try SP4_NONE */ | |
7159 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7160 | } | |
7161 | ||
66245539 TM |
7162 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7163 | struct rpc_cred *cred) | |
7164 | { | |
7165 | struct rpc_message msg = { | |
7166 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7167 | .rpc_argp = clp, | |
7168 | .rpc_cred = cred, | |
7169 | }; | |
7170 | int status; | |
7171 | ||
7172 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7173 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7174 | if (status) |
02c67525 | 7175 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7176 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7177 | return status; | |
7178 | } | |
7179 | ||
7180 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7181 | struct rpc_cred *cred) | |
7182 | { | |
7183 | unsigned int loop; | |
7184 | int ret; | |
7185 | ||
7186 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7187 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7188 | switch (ret) { | |
7189 | case -NFS4ERR_DELAY: | |
7190 | case -NFS4ERR_CLIENTID_BUSY: | |
7191 | ssleep(1); | |
7192 | break; | |
7193 | default: | |
7194 | return ret; | |
7195 | } | |
7196 | } | |
7197 | return 0; | |
7198 | } | |
7199 | ||
7200 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7201 | { | |
7202 | struct rpc_cred *cred; | |
7203 | int ret = 0; | |
7204 | ||
7205 | if (clp->cl_mvops->minor_version < 1) | |
7206 | goto out; | |
7207 | if (clp->cl_exchange_flags == 0) | |
7208 | goto out; | |
05f4c350 CL |
7209 | if (clp->cl_preserve_clid) |
7210 | goto out; | |
73d8bde5 | 7211 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7212 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7213 | if (cred) | |
7214 | put_rpccred(cred); | |
7215 | switch (ret) { | |
7216 | case 0: | |
7217 | case -NFS4ERR_STALE_CLIENTID: | |
7218 | clp->cl_exchange_flags = 0; | |
7219 | } | |
7220 | out: | |
7221 | return ret; | |
7222 | } | |
7223 | ||
2050f0cc AA |
7224 | struct nfs4_get_lease_time_data { |
7225 | struct nfs4_get_lease_time_args *args; | |
7226 | struct nfs4_get_lease_time_res *res; | |
7227 | struct nfs_client *clp; | |
7228 | }; | |
7229 | ||
7230 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7231 | void *calldata) | |
7232 | { | |
2050f0cc AA |
7233 | struct nfs4_get_lease_time_data *data = |
7234 | (struct nfs4_get_lease_time_data *)calldata; | |
7235 | ||
7236 | dprintk("--> %s\n", __func__); | |
7237 | /* just setup sequence, do not trigger session recovery | |
7238 | since we're invoked within one */ | |
d9afbd1b TM |
7239 | nfs41_setup_sequence(data->clp->cl_session, |
7240 | &data->args->la_seq_args, | |
7241 | &data->res->lr_seq_res, | |
7242 | task); | |
2050f0cc AA |
7243 | dprintk("<-- %s\n", __func__); |
7244 | } | |
7245 | ||
7246 | /* | |
7247 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7248 | * from sequence operation or clientid errors. | |
7249 | */ | |
7250 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7251 | { | |
7252 | struct nfs4_get_lease_time_data *data = | |
7253 | (struct nfs4_get_lease_time_data *)calldata; | |
7254 | ||
7255 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7256 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7257 | return; | |
2050f0cc AA |
7258 | switch (task->tk_status) { |
7259 | case -NFS4ERR_DELAY: | |
7260 | case -NFS4ERR_GRACE: | |
7261 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7262 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7263 | task->tk_status = 0; | |
a8a4ae3a AA |
7264 | /* fall through */ |
7265 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7266 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7267 | return; |
7268 | } | |
2050f0cc AA |
7269 | dprintk("<-- %s\n", __func__); |
7270 | } | |
7271 | ||
17280175 | 7272 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7273 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7274 | .rpc_call_done = nfs4_get_lease_time_done, | |
7275 | }; | |
7276 | ||
7277 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7278 | { | |
7279 | struct rpc_task *task; | |
7280 | struct nfs4_get_lease_time_args args; | |
7281 | struct nfs4_get_lease_time_res res = { | |
7282 | .lr_fsinfo = fsinfo, | |
7283 | }; | |
7284 | struct nfs4_get_lease_time_data data = { | |
7285 | .args = &args, | |
7286 | .res = &res, | |
7287 | .clp = clp, | |
7288 | }; | |
7289 | struct rpc_message msg = { | |
7290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7291 | .rpc_argp = &args, | |
7292 | .rpc_resp = &res, | |
7293 | }; | |
7294 | struct rpc_task_setup task_setup = { | |
7295 | .rpc_client = clp->cl_rpcclient, | |
7296 | .rpc_message = &msg, | |
7297 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7298 | .callback_data = &data, |
7299 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7300 | }; |
7301 | int status; | |
7302 | ||
a9c92d6b | 7303 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7304 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7305 | dprintk("--> %s\n", __func__); |
7306 | task = rpc_run_task(&task_setup); | |
7307 | ||
7308 | if (IS_ERR(task)) | |
7309 | status = PTR_ERR(task); | |
7310 | else { | |
7311 | status = task->tk_status; | |
7312 | rpc_put_task(task); | |
7313 | } | |
7314 | dprintk("<-- %s return %d\n", __func__, status); | |
7315 | ||
7316 | return status; | |
7317 | } | |
7318 | ||
fc931582 AA |
7319 | /* |
7320 | * Initialize the values to be used by the client in CREATE_SESSION | |
7321 | * If nfs4_init_session set the fore channel request and response sizes, | |
7322 | * use them. | |
7323 | * | |
7324 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7325 | * always set csa_cachethis to FALSE because the current implementation | |
7326 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7327 | */ | |
7328 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7329 | { | |
18aad3d5 AA |
7330 | unsigned int max_rqst_sz, max_resp_sz; |
7331 | ||
7332 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7333 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7334 | |
fc931582 | 7335 | /* Fore channel attributes */ |
18aad3d5 AA |
7336 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7337 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7338 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7339 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7340 | |
7341 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7342 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7343 | __func__, |
7344 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7345 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7346 | |
7347 | /* Back channel attributes */ | |
fc931582 AA |
7348 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7349 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7350 | args->bc_attrs.max_resp_sz_cached = 0; | |
7351 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
7352 | args->bc_attrs.max_reqs = 1; | |
7353 | ||
7354 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7355 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7356 | __func__, | |
7357 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7358 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7359 | args->bc_attrs.max_reqs); | |
7360 | } | |
7361 | ||
79969dd1 TM |
7362 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7363 | struct nfs41_create_session_res *res) | |
8d35301d | 7364 | { |
43c2e885 | 7365 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7366 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7367 | |
43c2e885 BF |
7368 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7369 | return -EINVAL; | |
7370 | /* | |
7371 | * Our requested max_ops is the minimum we need; we're not | |
7372 | * prepared to break up compounds into smaller pieces than that. | |
7373 | * So, no point even trying to continue if the server won't | |
7374 | * cooperate: | |
7375 | */ | |
7376 | if (rcvd->max_ops < sent->max_ops) | |
7377 | return -EINVAL; | |
7378 | if (rcvd->max_reqs == 0) | |
7379 | return -EINVAL; | |
b4b9a0c1 VG |
7380 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7381 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7382 | return 0; |
8d35301d AA |
7383 | } |
7384 | ||
79969dd1 TM |
7385 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7386 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7387 | { |
7388 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7389 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7390 | |
b1c0df5f TM |
7391 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7392 | goto out; | |
43c2e885 BF |
7393 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7394 | return -EINVAL; | |
7395 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7396 | return -EINVAL; | |
7397 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7398 | return -EINVAL; | |
7399 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7400 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7401 | return -EINVAL; |
b4b9a0c1 | 7402 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7403 | return -EINVAL; |
b1c0df5f | 7404 | out: |
43c2e885 BF |
7405 | return 0; |
7406 | } | |
8d35301d | 7407 | |
8d35301d | 7408 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7409 | struct nfs41_create_session_res *res) |
8d35301d | 7410 | { |
43c2e885 | 7411 | int ret; |
8d35301d | 7412 | |
79969dd1 | 7413 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7414 | if (ret) |
7415 | return ret; | |
79969dd1 TM |
7416 | return nfs4_verify_back_channel_attrs(args, res); |
7417 | } | |
7418 | ||
7419 | static void nfs4_update_session(struct nfs4_session *session, | |
7420 | struct nfs41_create_session_res *res) | |
7421 | { | |
7422 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7423 | /* Mark client id and session as being confirmed */ |
7424 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7425 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7426 | session->flags = res->flags; |
7427 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7428 | if (res->flags & SESSION4_BACK_CHAN) |
7429 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7430 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7431 | } |
7432 | ||
848f5bda TM |
7433 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7434 | struct rpc_cred *cred) | |
fc931582 AA |
7435 | { |
7436 | struct nfs4_session *session = clp->cl_session; | |
7437 | struct nfs41_create_session_args args = { | |
7438 | .client = clp, | |
79969dd1 TM |
7439 | .clientid = clp->cl_clientid, |
7440 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7441 | .cb_program = NFS4_CALLBACK, |
7442 | }; | |
79969dd1 TM |
7443 | struct nfs41_create_session_res res; |
7444 | ||
fc931582 AA |
7445 | struct rpc_message msg = { |
7446 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7447 | .rpc_argp = &args, | |
7448 | .rpc_resp = &res, | |
848f5bda | 7449 | .rpc_cred = cred, |
fc931582 AA |
7450 | }; |
7451 | int status; | |
7452 | ||
7453 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7454 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7455 | |
1bd714f2 | 7456 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7457 | trace_nfs4_create_session(clp, status); |
fc931582 | 7458 | |
43095d39 | 7459 | if (!status) { |
8d35301d | 7460 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7461 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7462 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7463 | if (clp->cl_seqid == res.seqid) |
7464 | clp->cl_seqid++; | |
7465 | if (status) | |
7466 | goto out; | |
7467 | nfs4_update_session(session, &res); | |
fc931582 | 7468 | } |
79969dd1 | 7469 | out: |
fc931582 AA |
7470 | return status; |
7471 | } | |
7472 | ||
7473 | /* | |
7474 | * Issues a CREATE_SESSION operation to the server. | |
7475 | * It is the responsibility of the caller to verify the session is | |
7476 | * expired before calling this routine. | |
7477 | */ | |
848f5bda | 7478 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7479 | { |
7480 | int status; | |
7481 | unsigned *ptr; | |
fc931582 AA |
7482 | struct nfs4_session *session = clp->cl_session; |
7483 | ||
7484 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7485 | ||
848f5bda | 7486 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7487 | if (status) |
7488 | goto out; | |
7489 | ||
aacd5537 AA |
7490 | /* Init or reset the session slot tables */ |
7491 | status = nfs4_setup_session_slot_tables(session); | |
7492 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7493 | if (status) |
7494 | goto out; | |
7495 | ||
7496 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7497 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7498 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7499 | out: |
7500 | dprintk("<-- %s\n", __func__); | |
7501 | return status; | |
7502 | } | |
7503 | ||
0f3e66c6 AA |
7504 | /* |
7505 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7506 | * The caller must serialize access to this routine. | |
7507 | */ | |
848f5bda TM |
7508 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7509 | struct rpc_cred *cred) | |
0f3e66c6 | 7510 | { |
848f5bda TM |
7511 | struct rpc_message msg = { |
7512 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7513 | .rpc_argp = session, | |
7514 | .rpc_cred = cred, | |
7515 | }; | |
0f3e66c6 | 7516 | int status = 0; |
0f3e66c6 AA |
7517 | |
7518 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7519 | ||
7520 | /* session is still being setup */ | |
e11259f9 TM |
7521 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7522 | return 0; | |
0f3e66c6 | 7523 | |
1bd714f2 | 7524 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7525 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7526 | |
7527 | if (status) | |
08106ac7 | 7528 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7529 | "Session has been destroyed regardless...\n", status); |
7530 | ||
7531 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7532 | return status; | |
7533 | } | |
7534 | ||
fc01cea9 AA |
7535 | /* |
7536 | * Renew the cl_session lease. | |
7537 | */ | |
d5f8d3fe TM |
7538 | struct nfs4_sequence_data { |
7539 | struct nfs_client *clp; | |
7540 | struct nfs4_sequence_args args; | |
7541 | struct nfs4_sequence_res res; | |
7542 | }; | |
7543 | ||
dc96aef9 AB |
7544 | static void nfs41_sequence_release(void *data) |
7545 | { | |
d5f8d3fe TM |
7546 | struct nfs4_sequence_data *calldata = data; |
7547 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7548 | |
7135840f AB |
7549 | if (atomic_read(&clp->cl_count) > 1) |
7550 | nfs4_schedule_state_renewal(clp); | |
7551 | nfs_put_client(clp); | |
d5f8d3fe | 7552 | kfree(calldata); |
dc96aef9 AB |
7553 | } |
7554 | ||
aa5190d0 TM |
7555 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7556 | { | |
7557 | switch(task->tk_status) { | |
7558 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7559 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7560 | return -EAGAIN; | |
7561 | default: | |
0400a6b0 | 7562 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7563 | } |
7564 | return 0; | |
7565 | } | |
7566 | ||
dc96aef9 | 7567 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7568 | { |
d5f8d3fe TM |
7569 | struct nfs4_sequence_data *calldata = data; |
7570 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7571 | |
14516c3a TM |
7572 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7573 | return; | |
fc01cea9 | 7574 | |
c6d01c6f | 7575 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7576 | if (task->tk_status < 0) { |
7577 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7578 | if (atomic_read(&clp->cl_count) == 1) |
7579 | goto out; | |
fc01cea9 | 7580 | |
aa5190d0 TM |
7581 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7582 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7583 | return; |
7584 | } | |
7585 | } | |
fc01cea9 | 7586 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7587 | out: |
fc01cea9 AA |
7588 | dprintk("<-- %s\n", __func__); |
7589 | } | |
7590 | ||
7591 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7592 | { | |
d5f8d3fe TM |
7593 | struct nfs4_sequence_data *calldata = data; |
7594 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7595 | struct nfs4_sequence_args *args; |
7596 | struct nfs4_sequence_res *res; | |
7597 | ||
fc01cea9 AA |
7598 | args = task->tk_msg.rpc_argp; |
7599 | res = task->tk_msg.rpc_resp; | |
7600 | ||
d9afbd1b | 7601 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7602 | } |
7603 | ||
7604 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7605 | .rpc_call_done = nfs41_sequence_call_done, | |
7606 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7607 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7608 | }; |
7609 | ||
8fe72bac TM |
7610 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7611 | struct rpc_cred *cred, | |
7612 | bool is_privileged) | |
fc01cea9 | 7613 | { |
d5f8d3fe | 7614 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7615 | struct rpc_message msg = { |
7616 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7617 | .rpc_cred = cred, | |
7618 | }; | |
71ac6da9 TM |
7619 | struct rpc_task_setup task_setup_data = { |
7620 | .rpc_client = clp->cl_rpcclient, | |
7621 | .rpc_message = &msg, | |
8fe72bac | 7622 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7623 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7624 | }; |
fc01cea9 | 7625 | |
7135840f | 7626 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7627 | return ERR_PTR(-EIO); |
dfb4f309 | 7628 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7629 | if (calldata == NULL) { |
7135840f | 7630 | nfs_put_client(clp); |
71ac6da9 | 7631 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7632 | } |
a9c92d6b | 7633 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7634 | if (is_privileged) |
7635 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7636 | msg.rpc_argp = &calldata->args; |
7637 | msg.rpc_resp = &calldata->res; | |
7638 | calldata->clp = clp; | |
71ac6da9 | 7639 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7640 | |
71ac6da9 TM |
7641 | return rpc_run_task(&task_setup_data); |
7642 | } | |
7643 | ||
2f60ea6b | 7644 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7645 | { |
7646 | struct rpc_task *task; | |
7647 | int ret = 0; | |
7648 | ||
2f60ea6b | 7649 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7650 | return -EAGAIN; |
8fe72bac | 7651 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7652 | if (IS_ERR(task)) |
7653 | ret = PTR_ERR(task); | |
7654 | else | |
bf294b41 | 7655 | rpc_put_task_async(task); |
71ac6da9 TM |
7656 | dprintk("<-- %s status=%d\n", __func__, ret); |
7657 | return ret; | |
7658 | } | |
7659 | ||
7660 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7661 | { | |
7662 | struct rpc_task *task; | |
7663 | int ret; | |
7664 | ||
8fe72bac | 7665 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7666 | if (IS_ERR(task)) { |
7667 | ret = PTR_ERR(task); | |
7668 | goto out; | |
7669 | } | |
7670 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7671 | if (!ret) |
71ac6da9 TM |
7672 | ret = task->tk_status; |
7673 | rpc_put_task(task); | |
7674 | out: | |
7675 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7676 | return ret; | |
fc01cea9 AA |
7677 | } |
7678 | ||
fce5c838 RL |
7679 | struct nfs4_reclaim_complete_data { |
7680 | struct nfs_client *clp; | |
7681 | struct nfs41_reclaim_complete_args arg; | |
7682 | struct nfs41_reclaim_complete_res res; | |
7683 | }; | |
7684 | ||
7685 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7686 | { | |
7687 | struct nfs4_reclaim_complete_data *calldata = data; | |
7688 | ||
d9afbd1b TM |
7689 | nfs41_setup_sequence(calldata->clp->cl_session, |
7690 | &calldata->arg.seq_args, | |
7691 | &calldata->res.seq_res, | |
7692 | task); | |
fce5c838 RL |
7693 | } |
7694 | ||
aa5190d0 TM |
7695 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7696 | { | |
7697 | switch(task->tk_status) { | |
7698 | case 0: | |
7699 | case -NFS4ERR_COMPLETE_ALREADY: | |
7700 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7701 | break; | |
7702 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7703 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7704 | /* fall through */ |
7705 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7706 | return -EAGAIN; |
7707 | default: | |
0400a6b0 | 7708 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7709 | } |
7710 | return 0; | |
7711 | } | |
7712 | ||
fce5c838 RL |
7713 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7714 | { | |
7715 | struct nfs4_reclaim_complete_data *calldata = data; | |
7716 | struct nfs_client *clp = calldata->clp; | |
7717 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7718 | ||
7719 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7720 | if (!nfs41_sequence_done(task, res)) |
7721 | return; | |
fce5c838 | 7722 | |
c6d01c6f | 7723 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7724 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7725 | rpc_restart_call_prepare(task); | |
7726 | return; | |
7727 | } | |
fce5c838 RL |
7728 | dprintk("<-- %s\n", __func__); |
7729 | } | |
7730 | ||
7731 | static void nfs4_free_reclaim_complete_data(void *data) | |
7732 | { | |
7733 | struct nfs4_reclaim_complete_data *calldata = data; | |
7734 | ||
7735 | kfree(calldata); | |
7736 | } | |
7737 | ||
7738 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7739 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7740 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7741 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7742 | }; | |
7743 | ||
7744 | /* | |
7745 | * Issue a global reclaim complete. | |
7746 | */ | |
965e9c23 TM |
7747 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7748 | struct rpc_cred *cred) | |
fce5c838 RL |
7749 | { |
7750 | struct nfs4_reclaim_complete_data *calldata; | |
7751 | struct rpc_task *task; | |
7752 | struct rpc_message msg = { | |
7753 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7754 | .rpc_cred = cred, |
fce5c838 RL |
7755 | }; |
7756 | struct rpc_task_setup task_setup_data = { | |
7757 | .rpc_client = clp->cl_rpcclient, | |
7758 | .rpc_message = &msg, | |
7759 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7760 | .flags = RPC_TASK_ASYNC, | |
7761 | }; | |
7762 | int status = -ENOMEM; | |
7763 | ||
7764 | dprintk("--> %s\n", __func__); | |
8535b2be | 7765 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7766 | if (calldata == NULL) |
7767 | goto out; | |
7768 | calldata->clp = clp; | |
7769 | calldata->arg.one_fs = 0; | |
fce5c838 | 7770 | |
a9c92d6b | 7771 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7772 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7773 | msg.rpc_argp = &calldata->arg; |
7774 | msg.rpc_resp = &calldata->res; | |
7775 | task_setup_data.callback_data = calldata; | |
7776 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7777 | if (IS_ERR(task)) { |
fce5c838 | 7778 | status = PTR_ERR(task); |
acf82b85 DC |
7779 | goto out; |
7780 | } | |
c34c32ea AA |
7781 | status = nfs4_wait_for_completion_rpc_task(task); |
7782 | if (status == 0) | |
7783 | status = task->tk_status; | |
fce5c838 | 7784 | rpc_put_task(task); |
acf82b85 | 7785 | return 0; |
fce5c838 RL |
7786 | out: |
7787 | dprintk("<-- %s status=%d\n", __func__, status); | |
7788 | return status; | |
7789 | } | |
b1f69b75 AA |
7790 | |
7791 | static void | |
7792 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7793 | { | |
7794 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7795 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7796 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7797 | |
7798 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7799 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7800 | * right now covering the LAYOUTGET we are about to send. | |
7801 | * However, that is not so catastrophic, and there seems | |
7802 | * to be no way to prevent it completely. | |
7803 | */ | |
6ba7db34 | 7804 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7805 | &lgp->res.seq_res, task)) |
b1f69b75 | 7806 | return; |
cf7d63f1 FI |
7807 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7808 | NFS_I(lgp->args.inode)->layout, | |
ce6ab4f2 | 7809 | &lgp->args.range, |
cf7d63f1 FI |
7810 | lgp->args.ctx->state)) { |
7811 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7812 | } |
b1f69b75 AA |
7813 | } |
7814 | ||
7815 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7816 | { | |
7817 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7818 | struct inode *inode = lgp->args.inode; |
7819 | struct nfs_server *server = NFS_SERVER(inode); | |
7820 | struct pnfs_layout_hdr *lo; | |
7821 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7822 | unsigned long timeo, now, giveup; |
b1f69b75 | 7823 | |
ed7e5423 | 7824 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7825 | |
6ba7db34 | 7826 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7827 | goto out; |
b1f69b75 AA |
7828 | |
7829 | switch (task->tk_status) { | |
7830 | case 0: | |
ee314c2a | 7831 | goto out; |
21b874c8 TM |
7832 | /* |
7833 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
7834 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
7835 | */ | |
7836 | case -NFS4ERR_BADLAYOUT: | |
7837 | goto out_overflow; | |
ed7e5423 BH |
7838 | /* |
7839 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
7840 | * (or clients) writing to the same RAID stripe except when |
7841 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
ed7e5423 | 7842 | */ |
b1f69b75 | 7843 | case -NFS4ERR_LAYOUTTRYLATER: |
21b874c8 TM |
7844 | if (lgp->args.minlength == 0) |
7845 | goto out_overflow; | |
ed7e5423 BH |
7846 | /* |
7847 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7848 | * existing layout before getting a new one). | |
7849 | */ | |
b1f69b75 | 7850 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7851 | timeo = rpc_get_timeout(task->tk_client); |
7852 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7853 | now = jiffies; |
7854 | if (time_after(giveup, now)) { | |
7855 | unsigned long delay; | |
7856 | ||
7857 | /* Delay for: | |
7858 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7859 | * - One last time a jiffie before we give up | |
7860 | * - exponential backoff (time_now minus start_attempt) | |
7861 | */ | |
7862 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7863 | min((giveup - now - 1), | |
7864 | now - lgp->args.timestamp)); | |
7865 | ||
7866 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7867 | __func__, delay); | |
7868 | rpc_delay(task, delay); | |
2259f960 TM |
7869 | /* Do not call nfs4_async_handle_error() */ |
7870 | goto out_restart; | |
ed7e5423 | 7871 | } |
ee314c2a TM |
7872 | break; |
7873 | case -NFS4ERR_EXPIRED: | |
7874 | case -NFS4ERR_BAD_STATEID: | |
7875 | spin_lock(&inode->i_lock); | |
2259f960 TM |
7876 | if (nfs4_stateid_match(&lgp->args.stateid, |
7877 | &lgp->args.ctx->state->stateid)) { | |
ee314c2a TM |
7878 | spin_unlock(&inode->i_lock); |
7879 | /* If the open stateid was bad, then recover it. */ | |
7880 | state = lgp->args.ctx->state; | |
2259f960 TM |
7881 | break; |
7882 | } | |
7883 | lo = NFS_I(inode)->layout; | |
7884 | if (lo && nfs4_stateid_match(&lgp->args.stateid, | |
7885 | &lo->plh_stateid)) { | |
ee314c2a TM |
7886 | LIST_HEAD(head); |
7887 | ||
defb8460 CH |
7888 | /* |
7889 | * Mark the bad layout state as invalid, then retry | |
7890 | * with the current stateid. | |
7891 | */ | |
8714d46d | 7892 | set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); |
ee314c2a TM |
7893 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7894 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7895 | pnfs_free_lseg_list(&head); |
2259f960 TM |
7896 | } else |
7897 | spin_unlock(&inode->i_lock); | |
7898 | goto out_restart; | |
b1f69b75 | 7899 | } |
8478eaa1 | 7900 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) |
2259f960 | 7901 | goto out_restart; |
ee314c2a | 7902 | out: |
b1f69b75 | 7903 | dprintk("<-- %s\n", __func__); |
21b874c8 | 7904 | return; |
2259f960 TM |
7905 | out_restart: |
7906 | task->tk_status = 0; | |
7907 | rpc_restart_call_prepare(task); | |
7908 | return; | |
21b874c8 TM |
7909 | out_overflow: |
7910 | task->tk_status = -EOVERFLOW; | |
7911 | goto out; | |
b1f69b75 AA |
7912 | } |
7913 | ||
8554116e IK |
7914 | static size_t max_response_pages(struct nfs_server *server) |
7915 | { | |
7916 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7917 | return nfs_page_array_len(0, max_resp_sz); | |
7918 | } | |
7919 | ||
7920 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7921 | { | |
7922 | int i; | |
7923 | ||
7924 | if (!pages) | |
7925 | return; | |
7926 | ||
7927 | for (i = 0; i < size; i++) { | |
7928 | if (!pages[i]) | |
7929 | break; | |
7930 | __free_page(pages[i]); | |
7931 | } | |
7932 | kfree(pages); | |
7933 | } | |
7934 | ||
7935 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7936 | { | |
7937 | struct page **pages; | |
7938 | int i; | |
7939 | ||
7940 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7941 | if (!pages) { | |
7942 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7943 | return NULL; | |
7944 | } | |
7945 | ||
7946 | for (i = 0; i < size; i++) { | |
7947 | pages[i] = alloc_page(gfp_flags); | |
7948 | if (!pages[i]) { | |
7949 | dprintk("%s: failed to allocate page\n", __func__); | |
7950 | nfs4_free_pages(pages, size); | |
7951 | return NULL; | |
7952 | } | |
7953 | } | |
7954 | ||
7955 | return pages; | |
7956 | } | |
7957 | ||
b1f69b75 AA |
7958 | static void nfs4_layoutget_release(void *calldata) |
7959 | { | |
7960 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7961 | struct inode *inode = lgp->args.inode; |
7962 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7963 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7964 | |
7965 | dprintk("--> %s\n", __func__); | |
8554116e | 7966 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7967 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7968 | put_nfs_open_context(lgp->args.ctx); |
7969 | kfree(calldata); | |
7970 | dprintk("<-- %s\n", __func__); | |
7971 | } | |
7972 | ||
7973 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7974 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7975 | .rpc_call_done = nfs4_layoutget_done, | |
7976 | .rpc_release = nfs4_layoutget_release, | |
7977 | }; | |
7978 | ||
a0b0a6e3 TM |
7979 | struct pnfs_layout_segment * |
7980 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7981 | { |
a47970ff WAA |
7982 | struct inode *inode = lgp->args.inode; |
7983 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7984 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7985 | struct rpc_task *task; |
7986 | struct rpc_message msg = { | |
7987 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7988 | .rpc_argp = &lgp->args, | |
7989 | .rpc_resp = &lgp->res, | |
6ab59344 | 7990 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7991 | }; |
7992 | struct rpc_task_setup task_setup_data = { | |
7993 | .rpc_client = server->client, | |
7994 | .rpc_message = &msg, | |
7995 | .callback_ops = &nfs4_layoutget_call_ops, | |
7996 | .callback_data = lgp, | |
7997 | .flags = RPC_TASK_ASYNC, | |
7998 | }; | |
a0b0a6e3 | 7999 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
8000 | int status = 0; |
8001 | ||
8002 | dprintk("--> %s\n", __func__); | |
8003 | ||
4bd5a980 PT |
8004 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
8005 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
8006 | ||
8554116e IK |
8007 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
8008 | if (!lgp->args.layout.pages) { | |
8009 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 8010 | return ERR_PTR(-ENOMEM); |
8554116e IK |
8011 | } |
8012 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 8013 | lgp->args.timestamp = jiffies; |
8554116e | 8014 | |
35124a09 | 8015 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 8016 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 8017 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 8018 | |
b1f69b75 AA |
8019 | task = rpc_run_task(&task_setup_data); |
8020 | if (IS_ERR(task)) | |
a0b0a6e3 | 8021 | return ERR_CAST(task); |
b1f69b75 | 8022 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
8023 | if (status == 0) |
8024 | status = task->tk_status; | |
1037e6ea TM |
8025 | trace_nfs4_layoutget(lgp->args.ctx, |
8026 | &lgp->args.range, | |
8027 | &lgp->res.range, | |
8028 | status); | |
085b7a45 WAA |
8029 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
8030 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 8031 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
8032 | rpc_put_task(task); |
8033 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
8034 | if (status) |
8035 | return ERR_PTR(status); | |
8036 | return lseg; | |
b1f69b75 AA |
8037 | } |
8038 | ||
cbe82603 BH |
8039 | static void |
8040 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
8041 | { | |
8042 | struct nfs4_layoutreturn *lrp = calldata; | |
8043 | ||
8044 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
8045 | nfs41_setup_sequence(lrp->clp->cl_session, |
8046 | &lrp->args.seq_args, | |
8047 | &lrp->res.seq_res, | |
8048 | task); | |
cbe82603 BH |
8049 | } |
8050 | ||
8051 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
8052 | { | |
8053 | struct nfs4_layoutreturn *lrp = calldata; | |
8054 | struct nfs_server *server; | |
8055 | ||
8056 | dprintk("--> %s\n", __func__); | |
8057 | ||
6ba7db34 | 8058 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
8059 | return; |
8060 | ||
8061 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
8062 | switch (task->tk_status) { |
8063 | default: | |
8064 | task->tk_status = 0; | |
8065 | case 0: | |
8066 | break; | |
8067 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8068 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8069 | break; |
d00c5d43 | 8070 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8071 | return; |
8072 | } | |
cbe82603 BH |
8073 | dprintk("<-- %s\n", __func__); |
8074 | } | |
8075 | ||
8076 | static void nfs4_layoutreturn_release(void *calldata) | |
8077 | { | |
8078 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8079 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8080 | LIST_HEAD(freeme); |
cbe82603 BH |
8081 | |
8082 | dprintk("--> %s\n", __func__); | |
849b286f TM |
8083 | spin_lock(&lo->plh_inode->i_lock); |
8084 | if (lrp->res.lrs_present) | |
8085 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
c5d73716 | 8086 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range); |
d67ae825 | 8087 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f TM |
8088 | lo->plh_block_lgets--; |
8089 | spin_unlock(&lo->plh_inode->i_lock); | |
c5d73716 | 8090 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8091 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8092 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8093 | kfree(calldata); |
8094 | dprintk("<-- %s\n", __func__); | |
8095 | } | |
8096 | ||
8097 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8098 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8099 | .rpc_call_done = nfs4_layoutreturn_done, | |
8100 | .rpc_release = nfs4_layoutreturn_release, | |
8101 | }; | |
8102 | ||
6c16605d | 8103 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8104 | { |
8105 | struct rpc_task *task; | |
8106 | struct rpc_message msg = { | |
8107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8108 | .rpc_argp = &lrp->args, | |
8109 | .rpc_resp = &lrp->res, | |
9556000d | 8110 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8111 | }; |
8112 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8113 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8114 | .rpc_message = &msg, |
8115 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8116 | .callback_data = lrp, | |
8117 | }; | |
6c16605d | 8118 | int status = 0; |
cbe82603 BH |
8119 | |
8120 | dprintk("--> %s\n", __func__); | |
5a0ec8ac TM |
8121 | if (!sync) { |
8122 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8123 | if (!lrp->inode) { | |
8124 | nfs4_layoutreturn_release(lrp); | |
8125 | return -EAGAIN; | |
8126 | } | |
8127 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8128 | } | |
a9c92d6b | 8129 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8130 | task = rpc_run_task(&task_setup_data); |
8131 | if (IS_ERR(task)) | |
8132 | return PTR_ERR(task); | |
5a0ec8ac TM |
8133 | if (sync) |
8134 | status = task->tk_status; | |
1037e6ea | 8135 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
8136 | dprintk("<-- %s status=%d\n", __func__, status); |
8137 | rpc_put_task(task); | |
8138 | return status; | |
8139 | } | |
8140 | ||
b1f69b75 | 8141 | static int |
cd5875fe TM |
8142 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8143 | struct pnfs_device *pdev, | |
8144 | struct rpc_cred *cred) | |
b1f69b75 AA |
8145 | { |
8146 | struct nfs4_getdeviceinfo_args args = { | |
8147 | .pdev = pdev, | |
4e590803 TM |
8148 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8149 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8150 | }; |
8151 | struct nfs4_getdeviceinfo_res res = { | |
8152 | .pdev = pdev, | |
8153 | }; | |
8154 | struct rpc_message msg = { | |
8155 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8156 | .rpc_argp = &args, | |
8157 | .rpc_resp = &res, | |
cd5875fe | 8158 | .rpc_cred = cred, |
b1f69b75 AA |
8159 | }; |
8160 | int status; | |
8161 | ||
8162 | dprintk("--> %s\n", __func__); | |
7c513058 | 8163 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8164 | if (res.notification & ~args.notify_types) |
8165 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8166 | if (res.notification != args.notify_types) |
8167 | pdev->nocache = 1; | |
4e590803 | 8168 | |
b1f69b75 AA |
8169 | dprintk("<-- %s status=%d\n", __func__, status); |
8170 | ||
8171 | return status; | |
8172 | } | |
8173 | ||
cd5875fe TM |
8174 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8175 | struct pnfs_device *pdev, | |
8176 | struct rpc_cred *cred) | |
b1f69b75 AA |
8177 | { |
8178 | struct nfs4_exception exception = { }; | |
8179 | int err; | |
8180 | ||
8181 | do { | |
8182 | err = nfs4_handle_exception(server, | |
cd5875fe | 8183 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8184 | &exception); |
8185 | } while (exception.retry); | |
8186 | return err; | |
8187 | } | |
8188 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8189 | ||
863a3c6c AA |
8190 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8191 | { | |
8192 | struct nfs4_layoutcommit_data *data = calldata; | |
8193 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8194 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8195 | |
d9afbd1b TM |
8196 | nfs41_setup_sequence(session, |
8197 | &data->args.seq_args, | |
8198 | &data->res.seq_res, | |
8199 | task); | |
863a3c6c AA |
8200 | } |
8201 | ||
8202 | static void | |
8203 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8204 | { | |
8205 | struct nfs4_layoutcommit_data *data = calldata; | |
8206 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8207 | ||
6ba7db34 | 8208 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8209 | return; |
8210 | ||
8211 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8212 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8213 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8214 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8215 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8216 | task->tk_status = 0; |
e59d27e0 | 8217 | case 0: |
e59d27e0 TM |
8218 | break; |
8219 | default: | |
8478eaa1 | 8220 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8221 | rpc_restart_call_prepare(task); |
8222 | return; | |
8223 | } | |
8224 | } | |
863a3c6c AA |
8225 | } |
8226 | ||
8227 | static void nfs4_layoutcommit_release(void *calldata) | |
8228 | { | |
8229 | struct nfs4_layoutcommit_data *data = calldata; | |
8230 | ||
db29c089 | 8231 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8232 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8233 | data->res.fattr); | |
863a3c6c | 8234 | put_rpccred(data->cred); |
472e2594 | 8235 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8236 | kfree(data); |
8237 | } | |
8238 | ||
8239 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8240 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8241 | .rpc_call_done = nfs4_layoutcommit_done, | |
8242 | .rpc_release = nfs4_layoutcommit_release, | |
8243 | }; | |
8244 | ||
8245 | int | |
ef311537 | 8246 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8247 | { |
8248 | struct rpc_message msg = { | |
8249 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8250 | .rpc_argp = &data->args, | |
8251 | .rpc_resp = &data->res, | |
8252 | .rpc_cred = data->cred, | |
8253 | }; | |
8254 | struct rpc_task_setup task_setup_data = { | |
8255 | .task = &data->task, | |
8256 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8257 | .rpc_message = &msg, | |
8258 | .callback_ops = &nfs4_layoutcommit_ops, | |
8259 | .callback_data = data, | |
863a3c6c AA |
8260 | }; |
8261 | struct rpc_task *task; | |
8262 | int status = 0; | |
8263 | ||
b4839ebe KM |
8264 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8265 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8266 | data->args.lastbytewritten, |
8267 | data->args.inode->i_ino); | |
8268 | ||
472e2594 TM |
8269 | if (!sync) { |
8270 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8271 | if (data->inode == NULL) { | |
8272 | nfs4_layoutcommit_release(data); | |
8273 | return -EAGAIN; | |
8274 | } | |
8275 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8276 | } | |
a9c92d6b | 8277 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8278 | task = rpc_run_task(&task_setup_data); |
8279 | if (IS_ERR(task)) | |
8280 | return PTR_ERR(task); | |
472e2594 TM |
8281 | if (sync) |
8282 | status = task->tk_status; | |
1037e6ea | 8283 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
8284 | dprintk("%s: status %d\n", __func__, status); |
8285 | rpc_put_task(task); | |
8286 | return status; | |
8287 | } | |
fca78d6d | 8288 | |
97431204 AA |
8289 | /** |
8290 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8291 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8292 | */ | |
fca78d6d BS |
8293 | static int |
8294 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8295 | struct nfs_fsinfo *info, |
8296 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8297 | { |
8298 | struct nfs41_secinfo_no_name_args args = { | |
8299 | .style = SECINFO_STYLE_CURRENT_FH, | |
8300 | }; | |
8301 | struct nfs4_secinfo_res res = { | |
8302 | .flavors = flavors, | |
8303 | }; | |
8304 | struct rpc_message msg = { | |
8305 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8306 | .rpc_argp = &args, | |
8307 | .rpc_resp = &res, | |
8308 | }; | |
b1b3e136 | 8309 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8310 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8311 | int status; |
8312 | ||
8313 | if (use_integrity) { | |
8314 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8315 | cred = nfs4_get_clid_cred(server->nfs_client); |
8316 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8317 | } |
8318 | ||
8319 | dprintk("--> %s\n", __func__); | |
8320 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8321 | &res.seq_res, 0); | |
8322 | dprintk("<-- %s status=%d\n", __func__, status); | |
8323 | ||
7cb852df WAA |
8324 | if (cred) |
8325 | put_rpccred(cred); | |
b1b3e136 WAA |
8326 | |
8327 | return status; | |
fca78d6d BS |
8328 | } |
8329 | ||
8330 | static int | |
8331 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8332 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8333 | { | |
8334 | struct nfs4_exception exception = { }; | |
8335 | int err; | |
8336 | do { | |
b1b3e136 WAA |
8337 | /* first try using integrity protection */ |
8338 | err = -NFS4ERR_WRONGSEC; | |
8339 | ||
8340 | /* try to use integrity protection with machine cred */ | |
8341 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8342 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8343 | flavors, true); | |
8344 | ||
8345 | /* | |
8346 | * if unable to use integrity protection, or SECINFO with | |
8347 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8348 | * disallowed by spec, but exists in deployed servers) use | |
8349 | * the current filesystem's rpc_client and the user cred. | |
8350 | */ | |
8351 | if (err == -NFS4ERR_WRONGSEC) | |
8352 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8353 | flavors, false); | |
8354 | ||
fca78d6d BS |
8355 | switch (err) { |
8356 | case 0: | |
8357 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8358 | case -ENOTSUPP: |
05e9cfb4 | 8359 | goto out; |
fca78d6d BS |
8360 | default: |
8361 | err = nfs4_handle_exception(server, err, &exception); | |
8362 | } | |
8363 | } while (exception.retry); | |
05e9cfb4 | 8364 | out: |
fca78d6d BS |
8365 | return err; |
8366 | } | |
8367 | ||
8368 | static int | |
8369 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8370 | struct nfs_fsinfo *info) | |
8371 | { | |
8372 | int err; | |
8373 | struct page *page; | |
367156d9 | 8374 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8375 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8376 | struct nfs4_secinfo4 *secinfo; |
8377 | int i; | |
fca78d6d BS |
8378 | |
8379 | page = alloc_page(GFP_KERNEL); | |
8380 | if (!page) { | |
8381 | err = -ENOMEM; | |
8382 | goto out; | |
8383 | } | |
8384 | ||
8385 | flavors = page_address(page); | |
8386 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8387 | ||
8388 | /* | |
8389 | * Fall back on "guess and check" method if | |
8390 | * the server doesn't support SECINFO_NO_NAME | |
8391 | */ | |
78b19bae | 8392 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8393 | err = nfs4_find_root_sec(server, fhandle, info); |
8394 | goto out_freepage; | |
8395 | } | |
8396 | if (err) | |
8397 | goto out_freepage; | |
8398 | ||
58a8cf12 WAA |
8399 | for (i = 0; i < flavors->num_flavors; i++) { |
8400 | secinfo = &flavors->flavors[i]; | |
8401 | ||
8402 | switch (secinfo->flavor) { | |
8403 | case RPC_AUTH_NULL: | |
8404 | case RPC_AUTH_UNIX: | |
8405 | case RPC_AUTH_GSS: | |
8406 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8407 | &secinfo->flavor_info); | |
8408 | break; | |
8409 | default: | |
8410 | flavor = RPC_AUTH_MAXFLAVOR; | |
8411 | break; | |
8412 | } | |
8413 | ||
4d4b69dd WAA |
8414 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8415 | flavor = RPC_AUTH_MAXFLAVOR; | |
8416 | ||
58a8cf12 WAA |
8417 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8418 | err = nfs4_lookup_root_sec(server, fhandle, | |
8419 | info, flavor); | |
8420 | if (!err) | |
8421 | break; | |
8422 | } | |
8423 | } | |
8424 | ||
8425 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8426 | err = -EPERM; | |
fca78d6d BS |
8427 | |
8428 | out_freepage: | |
8429 | put_page(page); | |
8430 | if (err == -EACCES) | |
8431 | return -EPERM; | |
8432 | out: | |
8433 | return err; | |
8434 | } | |
1cab0652 | 8435 | |
ab7cb0df TM |
8436 | static int _nfs41_test_stateid(struct nfs_server *server, |
8437 | nfs4_stateid *stateid, | |
8438 | struct rpc_cred *cred) | |
7d974794 BS |
8439 | { |
8440 | int status; | |
8441 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8442 | .stateid = stateid, |
7d974794 BS |
8443 | }; |
8444 | struct nfs41_test_stateid_res res; | |
8445 | struct rpc_message msg = { | |
8446 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8447 | .rpc_argp = &args, | |
8448 | .rpc_resp = &res, | |
ab7cb0df | 8449 | .rpc_cred = cred, |
7d974794 | 8450 | }; |
3787d506 WAA |
8451 | struct rpc_clnt *rpc_client = server->client; |
8452 | ||
8453 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8454 | &rpc_client, &msg); | |
1cab0652 | 8455 | |
38527b15 | 8456 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8457 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8458 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8459 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8460 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8461 | if (status != NFS_OK) { |
8462 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8463 | return status; |
38527b15 CL |
8464 | } |
8465 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8466 | return -res.status; |
7d974794 BS |
8467 | } |
8468 | ||
38527b15 CL |
8469 | /** |
8470 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8471 | * | |
8472 | * @server: server / transport on which to perform the operation | |
8473 | * @stateid: state ID to test | |
ab7cb0df | 8474 | * @cred: credential |
38527b15 CL |
8475 | * |
8476 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8477 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8478 | * failed or the state ID is not currently valid. | |
8479 | */ | |
ab7cb0df TM |
8480 | static int nfs41_test_stateid(struct nfs_server *server, |
8481 | nfs4_stateid *stateid, | |
8482 | struct rpc_cred *cred) | |
7d974794 BS |
8483 | { |
8484 | struct nfs4_exception exception = { }; | |
8485 | int err; | |
8486 | do { | |
ab7cb0df | 8487 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8488 | if (err != -NFS4ERR_DELAY) |
8489 | break; | |
8490 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8491 | } while (exception.retry); |
8492 | return err; | |
8493 | } | |
9aeda35f | 8494 | |
7c1d5fae TM |
8495 | struct nfs_free_stateid_data { |
8496 | struct nfs_server *server; | |
8497 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8498 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8499 | }; |
8500 | ||
8501 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8502 | { | |
8503 | struct nfs_free_stateid_data *data = calldata; | |
8504 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8505 | &data->args.seq_args, | |
8506 | &data->res.seq_res, | |
8507 | task); | |
8508 | } | |
8509 | ||
8510 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8511 | { | |
8512 | struct nfs_free_stateid_data *data = calldata; | |
8513 | ||
8514 | nfs41_sequence_done(task, &data->res.seq_res); | |
8515 | ||
8516 | switch (task->tk_status) { | |
8517 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8518 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8519 | rpc_restart_call_prepare(task); |
8520 | } | |
8521 | } | |
8522 | ||
8523 | static void nfs41_free_stateid_release(void *calldata) | |
8524 | { | |
8525 | kfree(calldata); | |
8526 | } | |
8527 | ||
17f26b12 | 8528 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8529 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8530 | .rpc_call_done = nfs41_free_stateid_done, | |
8531 | .rpc_release = nfs41_free_stateid_release, | |
8532 | }; | |
8533 | ||
8534 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8535 | nfs4_stateid *stateid, | |
ab7cb0df | 8536 | struct rpc_cred *cred, |
7c1d5fae TM |
8537 | bool privileged) |
8538 | { | |
9aeda35f BS |
8539 | struct rpc_message msg = { |
8540 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8541 | .rpc_cred = cred, |
9aeda35f | 8542 | }; |
7c1d5fae TM |
8543 | struct rpc_task_setup task_setup = { |
8544 | .rpc_client = server->client, | |
8545 | .rpc_message = &msg, | |
8546 | .callback_ops = &nfs41_free_stateid_ops, | |
8547 | .flags = RPC_TASK_ASYNC, | |
8548 | }; | |
8549 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8550 | |
3787d506 WAA |
8551 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8552 | &task_setup.rpc_client, &msg); | |
8553 | ||
38527b15 | 8554 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8555 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8556 | if (!data) | |
8557 | return ERR_PTR(-ENOMEM); | |
8558 | data->server = server; | |
8559 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8560 | ||
8561 | task_setup.callback_data = data; | |
8562 | ||
8563 | msg.rpc_argp = &data->args; | |
8564 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8565 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8566 | if (privileged) |
8567 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8568 | ||
8569 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8570 | } |
8571 | ||
38527b15 CL |
8572 | /** |
8573 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8574 | * | |
8575 | * @server: server / transport on which to perform the operation | |
8576 | * @stateid: state ID to release | |
ab7cb0df | 8577 | * @cred: credential |
38527b15 CL |
8578 | * |
8579 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8580 | * negative NFS4ERR value is returned. | |
8581 | */ | |
ab7cb0df TM |
8582 | static int nfs41_free_stateid(struct nfs_server *server, |
8583 | nfs4_stateid *stateid, | |
8584 | struct rpc_cred *cred) | |
9aeda35f | 8585 | { |
7c1d5fae TM |
8586 | struct rpc_task *task; |
8587 | int ret; | |
8588 | ||
ab7cb0df | 8589 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8590 | if (IS_ERR(task)) |
8591 | return PTR_ERR(task); | |
8592 | ret = rpc_wait_for_completion_task(task); | |
8593 | if (!ret) | |
8594 | ret = task->tk_status; | |
8595 | rpc_put_task(task); | |
8596 | return ret; | |
9aeda35f | 8597 | } |
36281caa | 8598 | |
f1cdae87 JL |
8599 | static void |
8600 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8601 | { |
8602 | struct rpc_task *task; | |
ab7cb0df | 8603 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8604 | |
ab7cb0df | 8605 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8606 | nfs4_free_lock_state(server, lsp); |
8607 | if (IS_ERR(task)) | |
f1cdae87 | 8608 | return; |
c8b2d0bf | 8609 | rpc_put_task(task); |
c8b2d0bf TM |
8610 | } |
8611 | ||
36281caa TM |
8612 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8613 | const nfs4_stateid *s2) | |
8614 | { | |
2d2f24ad | 8615 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8616 | return false; |
8617 | ||
2d2f24ad | 8618 | if (s1->seqid == s2->seqid) |
36281caa | 8619 | return true; |
2d2f24ad | 8620 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8621 | return true; |
8622 | ||
8623 | return false; | |
8624 | } | |
8625 | ||
557134a3 AA |
8626 | #endif /* CONFIG_NFS_V4_1 */ |
8627 | ||
36281caa TM |
8628 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8629 | const nfs4_stateid *s2) | |
8630 | { | |
f597c537 | 8631 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8632 | } |
8633 | ||
8634 | ||
17280175 | 8635 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8636 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8637 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8638 | .recover_open = nfs4_open_reclaim, |
8639 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8640 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8641 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8642 | }; |
8643 | ||
591d71cb | 8644 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8645 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8646 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8647 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8648 | .recover_open = nfs4_open_reclaim, | |
8649 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8650 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8651 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8652 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8653 | }; |
8654 | #endif /* CONFIG_NFS_V4_1 */ | |
8655 | ||
17280175 | 8656 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8657 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8658 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8659 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8660 | .recover_lock = nfs4_lock_expired, |
8661 | .establish_clid = nfs4_init_clientid, | |
8662 | }; | |
8663 | ||
8664 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8665 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8666 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8667 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8668 | .recover_open = nfs41_open_expired, |
8669 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8670 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8671 | }; |
591d71cb | 8672 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8673 | |
17280175 | 8674 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8675 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8676 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8677 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8678 | }; |
8679 | ||
8680 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8681 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8682 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8683 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8684 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8685 | }; |
8686 | #endif | |
8687 | ||
ec011fe8 | 8688 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8689 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8690 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8691 | }; |
8692 | ||
8693 | #if defined(CONFIG_NFS_V4_1) | |
8694 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8695 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8696 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8697 | }; |
8698 | #endif /* CONFIG_NFS_V4_1 */ | |
8699 | ||
97dc1359 TM |
8700 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8701 | .minor_version = 0, | |
39c6daae TM |
8702 | .init_caps = NFS_CAP_READDIRPLUS |
8703 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8704 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8705 | .init_client = nfs40_init_client, |
8706 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8707 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8708 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8709 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8710 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8711 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8712 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8713 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8714 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8715 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8716 | }; |
8717 | ||
8718 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8719 | static struct nfs_seqid * |
8720 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8721 | { | |
8722 | return NULL; | |
8723 | } | |
8724 | ||
97dc1359 TM |
8725 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8726 | .minor_version = 1, | |
39c6daae TM |
8727 | .init_caps = NFS_CAP_READDIRPLUS |
8728 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8729 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8730 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8731 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8732 | .init_client = nfs41_init_client, |
8733 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8734 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8735 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8736 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8737 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8738 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8739 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8740 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8741 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8742 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8743 | }; |
8744 | #endif | |
8745 | ||
42c2c424 SD |
8746 | #if defined(CONFIG_NFS_V4_2) |
8747 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8748 | .minor_version = 2, | |
7017310a BS |
8749 | .init_caps = NFS_CAP_READDIRPLUS |
8750 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8751 | | NFS_CAP_POSIX_LOCK |
8752 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8753 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8754 | | NFS_CAP_ALLOCATE |
624bd5b7 | 8755 | | NFS_CAP_DEALLOCATE |
6c5a0d89 TM |
8756 | | NFS_CAP_SEEK |
8757 | | NFS_CAP_LAYOUTSTATS, | |
abf79bb3 CL |
8758 | .init_client = nfs41_init_client, |
8759 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8760 | .match_stateid = nfs41_match_stateid, |
8761 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8762 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8763 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8764 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8765 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8766 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8767 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8768 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8769 | }; |
8770 | #endif | |
8771 | ||
97dc1359 TM |
8772 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8773 | [0] = &nfs_v4_0_minor_ops, | |
8774 | #if defined(CONFIG_NFS_V4_1) | |
8775 | [1] = &nfs_v4_1_minor_ops, | |
8776 | #endif | |
42c2c424 SD |
8777 | #if defined(CONFIG_NFS_V4_2) |
8778 | [2] = &nfs_v4_2_minor_ops, | |
8779 | #endif | |
97dc1359 TM |
8780 | }; |
8781 | ||
17f26b12 | 8782 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8783 | .create = nfs_create, |
8784 | .lookup = nfs_lookup, | |
8785 | .atomic_open = nfs_atomic_open, | |
8786 | .link = nfs_link, | |
8787 | .unlink = nfs_unlink, | |
8788 | .symlink = nfs_symlink, | |
8789 | .mkdir = nfs_mkdir, | |
8790 | .rmdir = nfs_rmdir, | |
8791 | .mknod = nfs_mknod, | |
8792 | .rename = nfs_rename, | |
8793 | .permission = nfs_permission, | |
8794 | .getattr = nfs_getattr, | |
8795 | .setattr = nfs_setattr, | |
8796 | .getxattr = generic_getxattr, | |
8797 | .setxattr = generic_setxattr, | |
8798 | .listxattr = generic_listxattr, | |
8799 | .removexattr = generic_removexattr, | |
8800 | }; | |
8801 | ||
92e1d5be | 8802 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8803 | .permission = nfs_permission, |
8804 | .getattr = nfs_getattr, | |
8805 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8806 | .getxattr = generic_getxattr, |
8807 | .setxattr = generic_setxattr, | |
8808 | .listxattr = generic_listxattr, | |
8809 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8810 | }; |
8811 | ||
509de811 | 8812 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8813 | .version = 4, /* protocol version */ |
8814 | .dentry_ops = &nfs4_dentry_operations, | |
8815 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8816 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8817 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8818 | .getroot = nfs4_proc_get_root, |
281cad46 | 8819 | .submount = nfs4_submount, |
ff9099f2 | 8820 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8821 | .getattr = nfs4_proc_getattr, |
8822 | .setattr = nfs4_proc_setattr, | |
8823 | .lookup = nfs4_proc_lookup, | |
8824 | .access = nfs4_proc_access, | |
8825 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8826 | .create = nfs4_proc_create, |
8827 | .remove = nfs4_proc_remove, | |
8828 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8829 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8830 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8831 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8832 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8833 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8834 | .link = nfs4_proc_link, |
8835 | .symlink = nfs4_proc_symlink, | |
8836 | .mkdir = nfs4_proc_mkdir, | |
8837 | .rmdir = nfs4_proc_remove, | |
8838 | .readdir = nfs4_proc_readdir, | |
8839 | .mknod = nfs4_proc_mknod, | |
8840 | .statfs = nfs4_proc_statfs, | |
8841 | .fsinfo = nfs4_proc_fsinfo, | |
8842 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8843 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8844 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8845 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8846 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8847 | .read_done = nfs4_read_done, |
1da177e4 | 8848 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8849 | .write_done = nfs4_write_done, |
1da177e4 | 8850 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8851 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8852 | .commit_done = nfs4_commit_done, |
1da177e4 | 8853 | .lock = nfs4_proc_lock, |
e50a1c2e | 8854 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8855 | .close_context = nfs4_close_context, |
2b484297 | 8856 | .open_context = nfs4_atomic_open, |
011e2a7f | 8857 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8858 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8859 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8860 | .init_client = nfs4_init_client, |
cdb7eced | 8861 | .free_client = nfs4_free_client, |
1179acc6 BS |
8862 | .create_server = nfs4_create_server, |
8863 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8864 | }; |
8865 | ||
64c2ce8b AK |
8866 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8867 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8868 | .list = nfs4_xattr_list_nfs4_acl, | |
8869 | .get = nfs4_xattr_get_nfs4_acl, | |
8870 | .set = nfs4_xattr_set_nfs4_acl, | |
8871 | }; | |
8872 | ||
8873 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8874 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8875 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8876 | &nfs4_xattr_nfs4_label_handler, | |
8877 | #endif | |
64c2ce8b AK |
8878 | NULL |
8879 | }; | |
8880 | ||
1da177e4 LT |
8881 | /* |
8882 | * Local variables: | |
8883 | * c-basic-offset: 8 | |
8884 | * End: | |
8885 | */ |