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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
81934ddb | 81 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
82 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
86 | struct nfs4_state *state, struct nfs4_label *ilabel, |
87 | struct nfs4_label *olabel); | |
f062eb6c | 88 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
89 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
90 | struct rpc_cred *); | |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
92 | struct rpc_cred *); | |
f062eb6c | 93 | #endif |
aa9c2669 DQ |
94 | |
95 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
96 | static inline struct nfs4_label * | |
97 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
98 | struct iattr *sattr, struct nfs4_label *label) | |
99 | { | |
100 | int err; | |
101 | ||
102 | if (label == NULL) | |
103 | return NULL; | |
104 | ||
105 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
106 | return NULL; | |
107 | ||
aa9c2669 DQ |
108 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
109 | &dentry->d_name, (void **)&label->label, &label->len); | |
110 | if (err == 0) | |
111 | return label; | |
112 | ||
113 | return NULL; | |
114 | } | |
115 | static inline void | |
116 | nfs4_label_release_security(struct nfs4_label *label) | |
117 | { | |
118 | if (label) | |
119 | security_release_secctx(label->label, label->len); | |
120 | } | |
121 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
122 | { | |
123 | if (label) | |
124 | return server->attr_bitmask; | |
125 | ||
126 | return server->attr_bitmask_nl; | |
127 | } | |
128 | #else | |
129 | static inline struct nfs4_label * | |
130 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
131 | struct iattr *sattr, struct nfs4_label *l) | |
132 | { return NULL; } | |
133 | static inline void | |
134 | nfs4_label_release_security(struct nfs4_label *label) | |
135 | { return; } | |
136 | static inline u32 * | |
137 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
138 | { return server->attr_bitmask; } | |
139 | #endif | |
140 | ||
1da177e4 | 141 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 142 | static int nfs4_map_errors(int err) |
1da177e4 | 143 | { |
52567b03 TM |
144 | if (err >= -1000) |
145 | return err; | |
146 | switch (err) { | |
147 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
148 | case -NFS4ERR_LAYOUTTRYLATER: |
149 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 150 | return -EREMOTEIO; |
7ebb9315 | 151 | case -NFS4ERR_WRONGSEC: |
8897538e | 152 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 153 | return -EPERM; |
3ddeb7c5 TM |
154 | case -NFS4ERR_BADOWNER: |
155 | case -NFS4ERR_BADNAME: | |
156 | return -EINVAL; | |
fb13bfa7 TM |
157 | case -NFS4ERR_SHARE_DENIED: |
158 | return -EACCES; | |
f25efd85 SD |
159 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
160 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
161 | case -NFS4ERR_FILE_OPEN: |
162 | return -EBUSY; | |
52567b03 | 163 | default: |
1da177e4 | 164 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 165 | __func__, -err); |
52567b03 | 166 | break; |
1da177e4 | 167 | } |
52567b03 | 168 | return -EIO; |
1da177e4 LT |
169 | } |
170 | ||
171 | /* | |
172 | * This is our standard bitmap for GETATTR requests. | |
173 | */ | |
1549210f | 174 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
175 | FATTR4_WORD0_TYPE |
176 | | FATTR4_WORD0_CHANGE | |
177 | | FATTR4_WORD0_SIZE | |
178 | | FATTR4_WORD0_FSID | |
179 | | FATTR4_WORD0_FILEID, | |
180 | FATTR4_WORD1_MODE | |
181 | | FATTR4_WORD1_NUMLINKS | |
182 | | FATTR4_WORD1_OWNER | |
183 | | FATTR4_WORD1_OWNER_GROUP | |
184 | | FATTR4_WORD1_RAWDEV | |
185 | | FATTR4_WORD1_SPACE_USED | |
186 | | FATTR4_WORD1_TIME_ACCESS | |
187 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
188 | | FATTR4_WORD1_TIME_MODIFY |
189 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
190 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
191 | FATTR4_WORD2_SECURITY_LABEL | |
192 | #endif | |
1da177e4 LT |
193 | }; |
194 | ||
1549210f TM |
195 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
196 | FATTR4_WORD0_TYPE | |
197 | | FATTR4_WORD0_CHANGE | |
198 | | FATTR4_WORD0_SIZE | |
199 | | FATTR4_WORD0_FSID | |
200 | | FATTR4_WORD0_FILEID, | |
201 | FATTR4_WORD1_MODE | |
202 | | FATTR4_WORD1_NUMLINKS | |
203 | | FATTR4_WORD1_OWNER | |
204 | | FATTR4_WORD1_OWNER_GROUP | |
205 | | FATTR4_WORD1_RAWDEV | |
206 | | FATTR4_WORD1_SPACE_USED | |
207 | | FATTR4_WORD1_TIME_ACCESS | |
208 | | FATTR4_WORD1_TIME_METADATA | |
209 | | FATTR4_WORD1_TIME_MODIFY, | |
210 | FATTR4_WORD2_MDSTHRESHOLD | |
95864c91 TM |
211 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
212 | | FATTR4_WORD2_SECURITY_LABEL | |
213 | #endif | |
1549210f TM |
214 | }; |
215 | ||
e23008ec AA |
216 | static const u32 nfs4_open_noattr_bitmap[3] = { |
217 | FATTR4_WORD0_TYPE | |
218 | | FATTR4_WORD0_CHANGE | |
219 | | FATTR4_WORD0_FILEID, | |
220 | }; | |
221 | ||
a09df2ca | 222 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
223 | FATTR4_WORD0_FILES_AVAIL |
224 | | FATTR4_WORD0_FILES_FREE | |
225 | | FATTR4_WORD0_FILES_TOTAL, | |
226 | FATTR4_WORD1_SPACE_AVAIL | |
227 | | FATTR4_WORD1_SPACE_FREE | |
228 | | FATTR4_WORD1_SPACE_TOTAL | |
229 | }; | |
230 | ||
a09df2ca | 231 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
232 | FATTR4_WORD0_MAXLINK |
233 | | FATTR4_WORD0_MAXNAME, | |
234 | 0 | |
235 | }; | |
236 | ||
dae100c2 | 237 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
238 | | FATTR4_WORD0_MAXREAD |
239 | | FATTR4_WORD0_MAXWRITE | |
240 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 241 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
242 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
243 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
2a92ee92 | 244 | | FATTR4_WORD2_CLONE_BLKSIZE |
1da177e4 LT |
245 | }; |
246 | ||
a09df2ca | 247 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
248 | FATTR4_WORD0_TYPE |
249 | | FATTR4_WORD0_CHANGE | |
250 | | FATTR4_WORD0_SIZE | |
251 | | FATTR4_WORD0_FSID | |
252 | | FATTR4_WORD0_FILEID | |
253 | | FATTR4_WORD0_FS_LOCATIONS, | |
254 | FATTR4_WORD1_MODE | |
255 | | FATTR4_WORD1_NUMLINKS | |
256 | | FATTR4_WORD1_OWNER | |
257 | | FATTR4_WORD1_OWNER_GROUP | |
258 | | FATTR4_WORD1_RAWDEV | |
259 | | FATTR4_WORD1_SPACE_USED | |
260 | | FATTR4_WORD1_TIME_ACCESS | |
261 | | FATTR4_WORD1_TIME_METADATA | |
262 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 263 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
264 | }; |
265 | ||
bc4785cd | 266 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
267 | struct nfs4_readdir_arg *readdir) |
268 | { | |
0dbb4c67 | 269 | __be32 *start, *p; |
1da177e4 | 270 | |
1da177e4 | 271 | if (cookie > 2) { |
b7ef1956 | 272 | readdir->cookie = cookie; |
1da177e4 LT |
273 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
274 | return; | |
275 | } | |
276 | ||
277 | readdir->cookie = 0; | |
278 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
279 | if (cookie == 2) | |
280 | return; | |
281 | ||
282 | /* | |
283 | * NFSv4 servers do not return entries for '.' and '..' | |
284 | * Therefore, we fake these entries here. We let '.' | |
285 | * have cookie 0 and '..' have cookie 1. Note that | |
286 | * when talking to the server, we always send cookie 0 | |
287 | * instead of 1 or 2. | |
288 | */ | |
2b86ce2d | 289 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
290 | |
291 | if (cookie == 0) { | |
292 | *p++ = xdr_one; /* next */ | |
293 | *p++ = xdr_zero; /* cookie, first word */ | |
294 | *p++ = xdr_one; /* cookie, second word */ | |
295 | *p++ = xdr_one; /* entry len */ | |
296 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
297 | p++; | |
298 | *p++ = xdr_one; /* bitmap length */ | |
299 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
300 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 301 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
1da177e4 LT |
302 | } |
303 | ||
304 | *p++ = xdr_one; /* next */ | |
305 | *p++ = xdr_zero; /* cookie, first word */ | |
306 | *p++ = xdr_two; /* cookie, second word */ | |
307 | *p++ = xdr_two; /* entry len */ | |
308 | memcpy(p, "..\0\0", 4); /* entry */ | |
309 | p++; | |
310 | *p++ = xdr_one; /* bitmap length */ | |
311 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
312 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 313 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
314 | |
315 | readdir->pgbase = (char *)p - (char *)start; | |
316 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 317 | kunmap_atomic(start); |
1da177e4 LT |
318 | } |
319 | ||
8478eaa1 N |
320 | static long nfs4_update_delay(long *timeout) |
321 | { | |
322 | long ret; | |
323 | if (!timeout) | |
324 | return NFS4_POLL_RETRY_MAX; | |
325 | if (*timeout <= 0) | |
326 | *timeout = NFS4_POLL_RETRY_MIN; | |
327 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
328 | *timeout = NFS4_POLL_RETRY_MAX; | |
329 | ret = *timeout; | |
330 | *timeout <<= 1; | |
331 | return ret; | |
332 | } | |
333 | ||
65de872e TM |
334 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
335 | { | |
336 | int res = 0; | |
337 | ||
338 | might_sleep(); | |
339 | ||
8478eaa1 N |
340 | freezable_schedule_timeout_killable_unsafe( |
341 | nfs4_update_delay(timeout)); | |
65de872e TM |
342 | if (fatal_signal_pending(current)) |
343 | res = -ERESTARTSYS; | |
65de872e TM |
344 | return res; |
345 | } | |
346 | ||
347 | /* This is the error handling routine for processes that are allowed | |
348 | * to sleep. | |
349 | */ | |
b3c2aa07 TM |
350 | static int nfs4_do_handle_exception(struct nfs_server *server, |
351 | int errorcode, struct nfs4_exception *exception) | |
65de872e TM |
352 | { |
353 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 354 | struct nfs4_state *state = exception->state; |
3114ea7a | 355 | struct inode *inode = exception->inode; |
65de872e TM |
356 | int ret = errorcode; |
357 | ||
b3c2aa07 TM |
358 | exception->delay = 0; |
359 | exception->recovering = 0; | |
65de872e TM |
360 | exception->retry = 0; |
361 | switch(errorcode) { | |
362 | case 0: | |
363 | return 0; | |
3114ea7a | 364 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
365 | case -NFS4ERR_DELEG_REVOKED: |
366 | case -NFS4ERR_ADMIN_REVOKED: | |
367 | case -NFS4ERR_BAD_STATEID: | |
4816fdad TM |
368 | if (inode && nfs_async_inode_return_delegation(inode, |
369 | NULL) == 0) | |
370 | goto wait_on_recovery; | |
3114ea7a TM |
371 | if (state == NULL) |
372 | break; | |
5d422301 TM |
373 | ret = nfs4_schedule_stateid_recovery(server, state); |
374 | if (ret < 0) | |
375 | break; | |
3114ea7a | 376 | goto wait_on_recovery; |
0ced63d1 | 377 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
378 | if (state != NULL) { |
379 | ret = nfs4_schedule_stateid_recovery(server, state); | |
380 | if (ret < 0) | |
381 | break; | |
382 | } | |
65de872e | 383 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 384 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
385 | nfs4_schedule_lease_recovery(clp); |
386 | goto wait_on_recovery; | |
519ae255 CL |
387 | case -NFS4ERR_MOVED: |
388 | ret = nfs4_schedule_migration_recovery(server); | |
389 | if (ret < 0) | |
390 | break; | |
391 | goto wait_on_recovery; | |
8ef2f8d4 CL |
392 | case -NFS4ERR_LEASE_MOVED: |
393 | nfs4_schedule_lease_moved_recovery(clp); | |
394 | goto wait_on_recovery; | |
03391693 | 395 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
396 | case -NFS4ERR_BADSESSION: |
397 | case -NFS4ERR_BADSLOT: | |
398 | case -NFS4ERR_BAD_HIGH_SLOT: | |
399 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
400 | case -NFS4ERR_DEADSESSION: | |
401 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
402 | case -NFS4ERR_SEQ_MISORDERED: | |
403 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
404 | errorcode); | |
9f594791 | 405 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 406 | goto wait_on_recovery; |
03391693 | 407 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 408 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
409 | if (exception->timeout > HZ) { |
410 | /* We have retried a decent amount, time to | |
411 | * fail | |
412 | */ | |
413 | ret = -EBUSY; | |
414 | break; | |
415 | } | |
65de872e | 416 | case -NFS4ERR_DELAY: |
2598ed34 TM |
417 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
418 | case -NFS4ERR_GRACE: | |
b3c2aa07 TM |
419 | exception->delay = 1; |
420 | return 0; | |
421 | ||
a8a4ae3a | 422 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
423 | case -NFS4ERR_OLD_STATEID: |
424 | exception->retry = 1; | |
b064eca2 TM |
425 | break; |
426 | case -NFS4ERR_BADOWNER: | |
427 | /* The following works around a Linux server bug! */ | |
428 | case -NFS4ERR_BADNAME: | |
429 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
430 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
431 | exception->retry = 1; | |
432 | printk(KERN_WARNING "NFS: v4 server %s " | |
433 | "does not accept raw " | |
434 | "uid/gids. " | |
435 | "Reenabling the idmapper.\n", | |
436 | server->nfs_client->cl_hostname); | |
437 | } | |
65de872e TM |
438 | } |
439 | /* We failed to handle the error */ | |
440 | return nfs4_map_errors(ret); | |
0400a6b0 | 441 | wait_on_recovery: |
b3c2aa07 TM |
442 | exception->recovering = 1; |
443 | return 0; | |
444 | } | |
445 | ||
446 | /* This is the error handling routine for processes that are allowed | |
447 | * to sleep. | |
448 | */ | |
449 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
450 | { | |
451 | struct nfs_client *clp = server->nfs_client; | |
452 | int ret; | |
453 | ||
454 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
455 | if (exception->delay) { | |
456 | ret = nfs4_delay(server->client, &exception->timeout); | |
457 | goto out_retry; | |
458 | } | |
459 | if (exception->recovering) { | |
460 | ret = nfs4_wait_clnt_recover(clp); | |
461 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
462 | return -EIO; | |
463 | goto out_retry; | |
464 | } | |
465 | return ret; | |
466 | out_retry: | |
a2c0b9e2 TM |
467 | if (ret == 0) |
468 | exception->retry = 1; | |
469 | return ret; | |
65de872e TM |
470 | } |
471 | ||
037fc980 TM |
472 | static int |
473 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
474 | int errorcode, struct nfs4_exception *exception) | |
475 | { | |
476 | struct nfs_client *clp = server->nfs_client; | |
477 | int ret; | |
478 | ||
479 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
480 | if (exception->delay) { | |
481 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
482 | goto out_retry; | |
483 | } | |
484 | if (exception->recovering) { | |
485 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
486 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
487 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
488 | goto out_retry; | |
489 | } | |
519ae255 | 490 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
491 | ret = -EIO; |
492 | return ret; | |
493 | out_retry: | |
a2c0b9e2 TM |
494 | if (ret == 0) |
495 | exception->retry = 1; | |
496 | return ret; | |
65de872e TM |
497 | } |
498 | ||
037fc980 TM |
499 | static int |
500 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, | |
501 | struct nfs4_state *state, long *timeout) | |
502 | { | |
503 | struct nfs4_exception exception = { | |
504 | .state = state, | |
505 | }; | |
506 | ||
507 | if (task->tk_status >= 0) | |
508 | return 0; | |
509 | if (timeout) | |
510 | exception.timeout = *timeout; | |
511 | task->tk_status = nfs4_async_handle_exception(task, server, | |
512 | task->tk_status, | |
513 | &exception); | |
514 | if (exception.delay && timeout) | |
515 | *timeout = exception.timeout; | |
516 | if (exception.retry) | |
517 | return -EAGAIN; | |
518 | return 0; | |
519 | } | |
520 | ||
a5250def WAA |
521 | /* |
522 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
523 | * or 'false' otherwise. | |
524 | */ | |
525 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
526 | { | |
527 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
528 | ||
529 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
530 | flavor == RPC_AUTH_GSS_KRB5P) | |
531 | return true; | |
532 | ||
533 | return false; | |
534 | } | |
65de872e | 535 | |
452e9352 | 536 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 537 | { |
1da177e4 LT |
538 | spin_lock(&clp->cl_lock); |
539 | if (time_before(clp->cl_last_renewal,timestamp)) | |
540 | clp->cl_last_renewal = timestamp; | |
541 | spin_unlock(&clp->cl_lock); | |
542 | } | |
543 | ||
452e9352 TM |
544 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
545 | { | |
be824167 TM |
546 | struct nfs_client *clp = server->nfs_client; |
547 | ||
548 | if (!nfs4_has_session(clp)) | |
549 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
550 | } |
551 | ||
2a3eb2b9 CL |
552 | struct nfs4_call_sync_data { |
553 | const struct nfs_server *seq_server; | |
554 | struct nfs4_sequence_args *seq_args; | |
555 | struct nfs4_sequence_res *seq_res; | |
556 | }; | |
557 | ||
be3a5d23 TM |
558 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
559 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
560 | { |
561 | args->sa_slot = NULL; | |
562 | args->sa_cache_this = cache_reply; | |
563 | args->sa_privileged = 0; | |
564 | ||
565 | res->sr_slot = NULL; | |
566 | } | |
567 | ||
568 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
569 | { | |
570 | args->sa_privileged = 1; | |
571 | } | |
572 | ||
cb04ad2a PT |
573 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
574 | struct nfs4_sequence_args *args, | |
575 | struct nfs4_sequence_res *res, | |
576 | struct rpc_task *task) | |
3bd2384a | 577 | { |
3bd2384a CL |
578 | struct nfs4_slot *slot; |
579 | ||
580 | /* slot already allocated? */ | |
581 | if (res->sr_slot != NULL) | |
582 | goto out_start; | |
583 | ||
584 | spin_lock(&tbl->slot_tbl_lock); | |
585 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
586 | goto out_sleep; | |
587 | ||
588 | slot = nfs4_alloc_slot(tbl); | |
589 | if (IS_ERR(slot)) { | |
590 | if (slot == ERR_PTR(-ENOMEM)) | |
591 | task->tk_timeout = HZ >> 2; | |
592 | goto out_sleep; | |
593 | } | |
594 | spin_unlock(&tbl->slot_tbl_lock); | |
595 | ||
596 | args->sa_slot = slot; | |
597 | res->sr_slot = slot; | |
598 | ||
599 | out_start: | |
600 | rpc_call_start(task); | |
601 | return 0; | |
602 | ||
603 | out_sleep: | |
604 | if (args->sa_privileged) | |
605 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
606 | NULL, RPC_PRIORITY_PRIVILEGED); | |
607 | else | |
608 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
609 | spin_unlock(&tbl->slot_tbl_lock); | |
610 | return -EAGAIN; | |
611 | } | |
cb04ad2a | 612 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
613 | |
614 | static int nfs40_sequence_done(struct rpc_task *task, | |
615 | struct nfs4_sequence_res *res) | |
616 | { | |
617 | struct nfs4_slot *slot = res->sr_slot; | |
618 | struct nfs4_slot_table *tbl; | |
619 | ||
cab92c19 | 620 | if (slot == NULL) |
3bd2384a CL |
621 | goto out; |
622 | ||
623 | tbl = slot->table; | |
624 | spin_lock(&tbl->slot_tbl_lock); | |
625 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
626 | nfs4_free_slot(tbl, slot); | |
627 | spin_unlock(&tbl->slot_tbl_lock); | |
628 | ||
629 | res->sr_slot = NULL; | |
630 | out: | |
631 | return 1; | |
632 | } | |
633 | ||
cccef3b9 AA |
634 | #if defined(CONFIG_NFS_V4_1) |
635 | ||
d185a334 | 636 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 637 | { |
e3725ec0 | 638 | struct nfs4_session *session; |
13615871 | 639 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 640 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 641 | bool send_new_highest_used_slotid = false; |
13615871 | 642 | |
a13ce7c6 | 643 | tbl = slot->table; |
e3725ec0 | 644 | session = tbl->session; |
ea028ac9 | 645 | |
35dc1d74 | 646 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
647 | /* Be nice to the server: try to ensure that the last transmitted |
648 | * value for highest_user_slotid <= target_highest_slotid | |
649 | */ | |
650 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
651 | send_new_highest_used_slotid = true; | |
652 | ||
a13ce7c6 | 653 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
654 | send_new_highest_used_slotid = false; |
655 | goto out_unlock; | |
656 | } | |
a13ce7c6 | 657 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
658 | |
659 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
660 | send_new_highest_used_slotid = false; | |
b75ad4cd | 661 | out_unlock: |
35dc1d74 | 662 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 663 | res->sr_slot = NULL; |
c10e4498 | 664 | if (send_new_highest_used_slotid) |
3f10a6af | 665 | nfs41_notify_server(session->clp); |
13615871 AA |
666 | } |
667 | ||
f9c96fcc | 668 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 669 | { |
e3725ec0 | 670 | struct nfs4_session *session; |
a13ce7c6 | 671 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 672 | struct nfs_client *clp; |
ac20d163 | 673 | bool interrupted = false; |
85563073 | 674 | int ret = 1; |
b0df806c | 675 | |
a13ce7c6 TM |
676 | if (slot == NULL) |
677 | goto out_noaction; | |
468f8613 BS |
678 | /* don't increment the sequence number if the task wasn't sent */ |
679 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
680 | goto out; |
681 | ||
e3725ec0 | 682 | session = slot->table->session; |
933602e3 | 683 | |
ac20d163 TM |
684 | if (slot->interrupted) { |
685 | slot->interrupted = 0; | |
686 | interrupted = true; | |
687 | } | |
688 | ||
2f92ae34 | 689 | trace_nfs4_sequence_done(session, res); |
691daf3b | 690 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
691 | switch (res->sr_status) { |
692 | case 0: | |
b0df806c | 693 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 694 | ++slot->seq_nr; |
e3725ec0 | 695 | clp = session->clp; |
8e63b6a8 | 696 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 697 | /* Check sequence flags */ |
b15c7cdd | 698 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 699 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 700 | break; |
ac20d163 TM |
701 | case 1: |
702 | /* | |
703 | * sr_status remains 1 if an RPC level error occurred. | |
704 | * The server may or may not have processed the sequence | |
705 | * operation.. | |
706 | * Mark the slot as having hosted an interrupted RPC call. | |
707 | */ | |
708 | slot->interrupted = 1; | |
709 | goto out; | |
14516c3a TM |
710 | case -NFS4ERR_DELAY: |
711 | /* The server detected a resend of the RPC call and | |
712 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
713 | * of RFC5661. | |
714 | */ | |
df2fabff | 715 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 716 | __func__, |
df2fabff | 717 | slot->slot_nr, |
933602e3 | 718 | slot->seq_nr); |
14516c3a | 719 | goto out_retry; |
85563073 TM |
720 | case -NFS4ERR_BADSLOT: |
721 | /* | |
722 | * The slot id we used was probably retired. Try again | |
723 | * using a different slot id. | |
724 | */ | |
e8794440 TM |
725 | goto retry_nowait; |
726 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
727 | /* |
728 | * Was the last operation on this sequence interrupted? | |
729 | * If so, retry after bumping the sequence number. | |
730 | */ | |
731 | if (interrupted) { | |
732 | ++slot->seq_nr; | |
733 | goto retry_nowait; | |
734 | } | |
e8794440 TM |
735 | /* |
736 | * Could this slot have been previously retired? | |
737 | * If so, then the server may be expecting seq_nr = 1! | |
738 | */ | |
8e63b6a8 TM |
739 | if (slot->seq_nr != 1) { |
740 | slot->seq_nr = 1; | |
741 | goto retry_nowait; | |
742 | } | |
743 | break; | |
e8794440 TM |
744 | case -NFS4ERR_SEQ_FALSE_RETRY: |
745 | ++slot->seq_nr; | |
746 | goto retry_nowait; | |
14516c3a TM |
747 | default: |
748 | /* Just update the slot sequence no. */ | |
933602e3 | 749 | ++slot->seq_nr; |
b0df806c AA |
750 | } |
751 | out: | |
752 | /* The session may be reset by one of the error handlers. */ | |
753 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 754 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 755 | out_noaction: |
85563073 | 756 | return ret; |
e8794440 TM |
757 | retry_nowait: |
758 | if (rpc_restart_call_prepare(task)) { | |
759 | task->tk_status = 0; | |
760 | ret = 0; | |
761 | } | |
762 | goto out; | |
14516c3a | 763 | out_retry: |
d05dd4e9 | 764 | if (!rpc_restart_call(task)) |
14516c3a TM |
765 | goto out; |
766 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
767 | return 0; | |
b0df806c | 768 | } |
f9c96fcc | 769 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 770 | |
2c4b131d | 771 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 772 | { |
e3725ec0 | 773 | if (res->sr_slot == NULL) |
14516c3a | 774 | return 1; |
3bd2384a CL |
775 | if (!res->sr_slot->table->session) |
776 | return nfs40_sequence_done(task, res); | |
14516c3a | 777 | return nfs41_sequence_done(task, res); |
df896455 | 778 | } |
2c4b131d | 779 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 780 | |
dc70d7b3 | 781 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
782 | struct nfs4_sequence_args *args, |
783 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
784 | struct rpc_task *task) |
785 | { | |
fbcd4abc AA |
786 | struct nfs4_slot *slot; |
787 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
788 | |
789 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 790 | /* slot already allocated? */ |
dfb4f309 | 791 | if (res->sr_slot != NULL) |
d9afbd1b | 792 | goto out_success; |
ce5039c1 | 793 | |
fbcd4abc AA |
794 | tbl = &session->fc_slot_table; |
795 | ||
69d206b5 TM |
796 | task->tk_timeout = 0; |
797 | ||
fbcd4abc | 798 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 799 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 800 | !args->sa_privileged) { |
0b1c8fc4 | 801 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 802 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 803 | goto out_sleep; |
689cf5c1 AB |
804 | } |
805 | ||
2dc03b7f | 806 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
807 | if (IS_ERR(slot)) { |
808 | /* If out of memory, try again in 1/4 second */ | |
809 | if (slot == ERR_PTR(-ENOMEM)) | |
810 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 811 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 812 | goto out_sleep; |
fbcd4abc AA |
813 | } |
814 | spin_unlock(&tbl->slot_tbl_lock); | |
815 | ||
2b2fa717 | 816 | args->sa_slot = slot; |
fbcd4abc | 817 | |
e8d92382 | 818 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 819 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 820 | |
dfb4f309 | 821 | res->sr_slot = slot; |
8e63b6a8 | 822 | res->sr_timestamp = jiffies; |
2a6e26cd | 823 | res->sr_status_flags = 0; |
fbcd4abc AA |
824 | /* |
825 | * sr_status is only set in decode_sequence, and so will remain | |
826 | * set to 1 if an rpc level failure occurs. | |
827 | */ | |
828 | res->sr_status = 1; | |
2f92ae34 | 829 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
830 | out_success: |
831 | rpc_call_start(task); | |
ce5039c1 | 832 | return 0; |
7b939a3f | 833 | out_sleep: |
8fe72bac TM |
834 | /* Privileged tasks are queued with top priority */ |
835 | if (args->sa_privileged) | |
1e1093c7 TM |
836 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
837 | NULL, RPC_PRIORITY_PRIVILEGED); | |
838 | else | |
839 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
840 | spin_unlock(&tbl->slot_tbl_lock); |
841 | return -EAGAIN; | |
ce5039c1 | 842 | } |
dc70d7b3 | 843 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 844 | |
5a580e0a CL |
845 | static int nfs4_setup_sequence(const struct nfs_server *server, |
846 | struct nfs4_sequence_args *args, | |
847 | struct nfs4_sequence_res *res, | |
848 | struct rpc_task *task) | |
ce5039c1 | 849 | { |
035168ab | 850 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
851 | int ret = 0; |
852 | ||
3bd2384a | 853 | if (!session) |
cb04ad2a PT |
854 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
855 | args, res, task); | |
035168ab | 856 | |
e8d92382 | 857 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 858 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 859 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 860 | |
9d12b216 | 861 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 862 | |
ce5039c1 AA |
863 | dprintk("<-- %s status=%d\n", __func__, ret); |
864 | return ret; | |
865 | } | |
866 | ||
ce5039c1 AA |
867 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
868 | { | |
2a3eb2b9 | 869 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 870 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 871 | |
035168ab TM |
872 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
873 | ||
d9afbd1b | 874 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
875 | } |
876 | ||
69ab40c4 AA |
877 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
878 | { | |
2a3eb2b9 | 879 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 880 | |
14516c3a | 881 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
882 | } |
883 | ||
17280175 | 884 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 885 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 886 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
887 | }; |
888 | ||
3bd2384a CL |
889 | #else /* !CONFIG_NFS_V4_1 */ |
890 | ||
9915ea7e CL |
891 | static int nfs4_setup_sequence(const struct nfs_server *server, |
892 | struct nfs4_sequence_args *args, | |
893 | struct nfs4_sequence_res *res, | |
894 | struct rpc_task *task) | |
895 | { | |
cb04ad2a PT |
896 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
897 | args, res, task); | |
9915ea7e CL |
898 | } |
899 | ||
2c4b131d PT |
900 | int nfs4_sequence_done(struct rpc_task *task, |
901 | struct nfs4_sequence_res *res) | |
9915ea7e | 902 | { |
3bd2384a | 903 | return nfs40_sequence_done(task, res); |
9915ea7e | 904 | } |
2c4b131d | 905 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
906 | |
907 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
908 | |
909 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
910 | { | |
911 | struct nfs4_call_sync_data *data = calldata; | |
912 | nfs4_setup_sequence(data->seq_server, | |
913 | data->seq_args, data->seq_res, task); | |
914 | } | |
915 | ||
916 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
917 | { | |
918 | struct nfs4_call_sync_data *data = calldata; | |
919 | nfs4_sequence_done(task, data->seq_res); | |
920 | } | |
921 | ||
922 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
923 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
924 | .rpc_call_done = nfs40_call_sync_done, | |
925 | }; | |
926 | ||
7c513058 BS |
927 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
928 | struct nfs_server *server, | |
ce5039c1 AA |
929 | struct rpc_message *msg, |
930 | struct nfs4_sequence_args *args, | |
8fe72bac | 931 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
932 | { |
933 | int ret; | |
934 | struct rpc_task *task; | |
9915ea7e | 935 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 936 | struct nfs4_call_sync_data data = { |
035168ab | 937 | .seq_server = server, |
ce5039c1 AA |
938 | .seq_args = args, |
939 | .seq_res = res, | |
ce5039c1 AA |
940 | }; |
941 | struct rpc_task_setup task_setup = { | |
7c513058 | 942 | .rpc_client = clnt, |
ce5039c1 | 943 | .rpc_message = msg, |
9915ea7e | 944 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
945 | .callback_data = &data |
946 | }; | |
947 | ||
ce5039c1 AA |
948 | task = rpc_run_task(&task_setup); |
949 | if (IS_ERR(task)) | |
950 | ret = PTR_ERR(task); | |
951 | else { | |
952 | ret = task->tk_status; | |
953 | rpc_put_task(task); | |
954 | } | |
955 | return ret; | |
956 | } | |
957 | ||
7c513058 BS |
958 | int nfs4_call_sync(struct rpc_clnt *clnt, |
959 | struct nfs_server *server, | |
e73b83f2 BS |
960 | struct rpc_message *msg, |
961 | struct nfs4_sequence_args *args, | |
962 | struct nfs4_sequence_res *res, | |
963 | int cache_reply) | |
964 | { | |
a9c92d6b | 965 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 966 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 967 | } |
cccef3b9 | 968 | |
38478b24 | 969 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 970 | { |
38478b24 | 971 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 972 | |
38478b24 | 973 | spin_lock(&dir->i_lock); |
359d7d1c | 974 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 975 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 976 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 977 | dir->i_version = cinfo->after; |
3235b403 | 978 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 979 | nfs_fscache_invalidate(dir); |
38478b24 | 980 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
981 | } |
982 | ||
e56e0b78 | 983 | struct nfs4_opendata { |
c6d00e63 | 984 | struct kref kref; |
e56e0b78 TM |
985 | struct nfs_openargs o_arg; |
986 | struct nfs_openres o_res; | |
cdd4e68b TM |
987 | struct nfs_open_confirmargs c_arg; |
988 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
989 | struct nfs4_string owner_name; |
990 | struct nfs4_string group_name; | |
a49c2691 | 991 | struct nfs4_label *a_label; |
e56e0b78 | 992 | struct nfs_fattr f_attr; |
1775fd3e | 993 | struct nfs4_label *f_label; |
e56e0b78 | 994 | struct dentry *dir; |
82a2c1b7 | 995 | struct dentry *dentry; |
e56e0b78 | 996 | struct nfs4_state_owner *owner; |
aac00a8d | 997 | struct nfs4_state *state; |
e56e0b78 | 998 | struct iattr attrs; |
26e976a8 | 999 | unsigned long timestamp; |
3e309914 | 1000 | unsigned int rpc_done : 1; |
5bc2afc2 | 1001 | unsigned int file_created : 1; |
bdeca1b7 | 1002 | unsigned int is_recover : 1; |
24ac23ab TM |
1003 | int rpc_status; |
1004 | int cancelled; | |
e56e0b78 TM |
1005 | }; |
1006 | ||
49f9a0fa TM |
1007 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1008 | int err, struct nfs4_exception *exception) | |
1009 | { | |
1010 | if (err != -EINVAL) | |
1011 | return false; | |
1012 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1013 | return false; | |
1014 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1015 | exception->retry = 1; | |
1016 | return true; | |
1017 | } | |
1018 | ||
6ae37339 TM |
1019 | static u32 |
1020 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1021 | fmode_t fmode, int openflags) | |
1022 | { | |
1023 | u32 res = 0; | |
1024 | ||
1025 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1026 | case FMODE_READ: | |
1027 | res = NFS4_SHARE_ACCESS_READ; | |
1028 | break; | |
1029 | case FMODE_WRITE: | |
1030 | res = NFS4_SHARE_ACCESS_WRITE; | |
1031 | break; | |
1032 | case FMODE_READ|FMODE_WRITE: | |
1033 | res = NFS4_SHARE_ACCESS_BOTH; | |
1034 | } | |
1035 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1036 | goto out; | |
1037 | /* Want no delegation if we're using O_DIRECT */ | |
1038 | if (openflags & O_DIRECT) | |
1039 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1040 | out: | |
1041 | return res; | |
1042 | } | |
1043 | ||
49f9a0fa TM |
1044 | static enum open_claim_type4 |
1045 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1046 | enum open_claim_type4 claim) | |
1047 | { | |
1048 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1049 | return claim; | |
1050 | switch (claim) { | |
1051 | default: | |
1052 | return claim; | |
1053 | case NFS4_OPEN_CLAIM_FH: | |
1054 | return NFS4_OPEN_CLAIM_NULL; | |
1055 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1056 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1057 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1058 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1059 | } | |
1060 | } | |
2ced46c2 TM |
1061 | |
1062 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1063 | { | |
1064 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1065 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1066 | p->o_res.seqid = p->o_arg.seqid; |
1067 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1068 | p->o_res.server = p->o_arg.server; |
5f657530 | 1069 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1070 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1071 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1072 | } |
1073 | ||
82a2c1b7 | 1074 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1075 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1076 | const struct iattr *attrs, |
1775fd3e | 1077 | struct nfs4_label *label, |
4a1c0893 | 1078 | enum open_claim_type4 claim, |
8535b2be | 1079 | gfp_t gfp_mask) |
e56e0b78 | 1080 | { |
82a2c1b7 | 1081 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1082 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1083 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1084 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1085 | struct nfs4_opendata *p; |
1086 | ||
8535b2be | 1087 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1088 | if (p == NULL) |
1089 | goto err; | |
14c43f76 DQ |
1090 | |
1091 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1092 | if (IS_ERR(p->f_label)) | |
1093 | goto err_free_p; | |
1094 | ||
a49c2691 KM |
1095 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1096 | if (IS_ERR(p->a_label)) | |
1097 | goto err_free_f; | |
1098 | ||
63f5f796 TM |
1099 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1100 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1101 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1102 | goto err_free_label; |
82a2c1b7 AV |
1103 | nfs_sb_active(dentry->d_sb); |
1104 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1105 | p->dir = parent; |
1106 | p->owner = sp; | |
1107 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1108 | p->o_arg.open_flags = flags; |
1109 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1110 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1111 | fmode, flags); | |
ae2bb032 WAA |
1112 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1113 | * will return permission denied for all bits until close */ | |
1114 | if (!(flags & O_EXCL)) { | |
1115 | /* ask server to check for all possible rights as results | |
1116 | * are cached */ | |
1117 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1118 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1119 | } |
7539bbab | 1120 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1121 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1122 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1123 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1124 | p->o_arg.server = server; |
aa9c2669 | 1125 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1126 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1127 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1128 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1129 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1130 | case NFS4_OPEN_CLAIM_NULL: |
1131 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1132 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1133 | p->o_arg.fh = NFS_FH(dir); | |
1134 | break; | |
1135 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1136 | case NFS4_OPEN_CLAIM_FH: | |
1137 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1138 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1139 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1140 | } |
536e43d1 | 1141 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1142 | __u32 verf[2]; |
d77d76ff | 1143 | |
e56e0b78 TM |
1144 | p->o_arg.u.attrs = &p->attrs; |
1145 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1146 | |
1147 | verf[0] = jiffies; | |
1148 | verf[1] = current->pid; | |
1149 | memcpy(p->o_arg.u.verifier.data, verf, | |
1150 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1151 | } |
cdd4e68b TM |
1152 | p->c_arg.fh = &p->o_res.fh; |
1153 | p->c_arg.stateid = &p->o_res.stateid; | |
1154 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1155 | nfs4_init_opendata_res(p); |
c6d00e63 | 1156 | kref_init(&p->kref); |
e56e0b78 | 1157 | return p; |
14c43f76 DQ |
1158 | |
1159 | err_free_label: | |
a49c2691 KM |
1160 | nfs4_label_free(p->a_label); |
1161 | err_free_f: | |
14c43f76 DQ |
1162 | nfs4_label_free(p->f_label); |
1163 | err_free_p: | |
e56e0b78 TM |
1164 | kfree(p); |
1165 | err: | |
1166 | dput(parent); | |
1167 | return NULL; | |
1168 | } | |
1169 | ||
c6d00e63 | 1170 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1171 | { |
c6d00e63 TM |
1172 | struct nfs4_opendata *p = container_of(kref, |
1173 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1174 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1175 | |
1176 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1177 | if (p->state != NULL) |
1178 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1179 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1180 | |
a49c2691 | 1181 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1182 | nfs4_label_free(p->f_label); |
1183 | ||
c6d00e63 | 1184 | dput(p->dir); |
82a2c1b7 AV |
1185 | dput(p->dentry); |
1186 | nfs_sb_deactive(sb); | |
6926afd1 | 1187 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1188 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1189 | kfree(p); |
1190 | } | |
1191 | ||
1192 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1193 | { | |
1194 | if (p != NULL) | |
1195 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1196 | } |
1197 | ||
06f814a3 TM |
1198 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1199 | { | |
06f814a3 TM |
1200 | int ret; |
1201 | ||
06f814a3 | 1202 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1203 | return ret; |
1204 | } | |
1205 | ||
24311f88 TM |
1206 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1207 | fmode_t fmode) | |
1208 | { | |
1209 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1210 | case FMODE_READ|FMODE_WRITE: | |
1211 | return state->n_rdwr != 0; | |
1212 | case FMODE_WRITE: | |
1213 | return state->n_wronly != 0; | |
1214 | case FMODE_READ: | |
1215 | return state->n_rdonly != 0; | |
1216 | } | |
1217 | WARN_ON_ONCE(1); | |
1218 | return false; | |
1219 | } | |
1220 | ||
dc0b027d | 1221 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1222 | { |
1223 | int ret = 0; | |
dc0b027d | 1224 | |
536e43d1 | 1225 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1226 | goto out; |
1227 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1228 | case FMODE_READ: |
88069f77 TM |
1229 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1230 | && state->n_rdonly != 0; | |
6ee41268 TM |
1231 | break; |
1232 | case FMODE_WRITE: | |
88069f77 TM |
1233 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1234 | && state->n_wronly != 0; | |
6ee41268 TM |
1235 | break; |
1236 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1237 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1238 | && state->n_rdwr != 0; | |
6ee41268 | 1239 | } |
dc0b027d | 1240 | out: |
6ee41268 TM |
1241 | return ret; |
1242 | } | |
1243 | ||
2a606188 TM |
1244 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1245 | enum open_claim_type4 claim) | |
aac00a8d | 1246 | { |
652f89f6 TM |
1247 | if (delegation == NULL) |
1248 | return 0; | |
dc0b027d | 1249 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1250 | return 0; |
d25be546 TM |
1251 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1252 | return 0; | |
2a606188 TM |
1253 | switch (claim) { |
1254 | case NFS4_OPEN_CLAIM_NULL: | |
1255 | case NFS4_OPEN_CLAIM_FH: | |
1256 | break; | |
1257 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1258 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1259 | break; | |
1260 | default: | |
1261 | return 0; | |
1262 | } | |
b7391f44 | 1263 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1264 | return 1; |
1265 | } | |
1266 | ||
dc0b027d | 1267 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1268 | { |
dc0b027d | 1269 | switch (fmode) { |
e7616923 TM |
1270 | case FMODE_WRITE: |
1271 | state->n_wronly++; | |
1272 | break; | |
1273 | case FMODE_READ: | |
1274 | state->n_rdonly++; | |
1275 | break; | |
1276 | case FMODE_READ|FMODE_WRITE: | |
1277 | state->n_rdwr++; | |
1278 | } | |
dc0b027d | 1279 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1280 | } |
1281 | ||
4f14c194 TM |
1282 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1283 | { | |
1284 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1285 | bool need_recover = false; | |
1286 | ||
1287 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1288 | need_recover = true; | |
1289 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1290 | need_recover = true; | |
1291 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1292 | need_recover = true; | |
1293 | if (need_recover) | |
1294 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1295 | } | |
1296 | ||
e999e80e TM |
1297 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1298 | nfs4_stateid *stateid) | |
1299 | { | |
1300 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1301 | return true; | |
4f14c194 TM |
1302 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1303 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1304 | return true; |
4f14c194 | 1305 | } |
e999e80e TM |
1306 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1307 | return true; | |
1308 | return false; | |
1309 | } | |
1310 | ||
f95549cf TM |
1311 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1312 | { | |
3c38cbe2 TM |
1313 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1314 | return; | |
f95549cf TM |
1315 | if (state->n_wronly) |
1316 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1317 | if (state->n_rdonly) | |
1318 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1319 | if (state->n_rdwr) | |
1320 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1321 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1322 | } |
1323 | ||
226056c5 | 1324 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1325 | nfs4_stateid *arg_stateid, |
226056c5 | 1326 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1327 | { |
226056c5 TM |
1328 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1329 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1330 | case FMODE_WRITE: | |
1331 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1332 | break; | |
1333 | case FMODE_READ: | |
1334 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1335 | break; | |
1336 | case 0: | |
1337 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1338 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1339 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1340 | } | |
1341 | if (stateid == NULL) | |
1342 | return; | |
f95549cf | 1343 | /* Handle races with OPEN */ |
4a1e2feb TM |
1344 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1345 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1346 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1347 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1348 | return; |
f95549cf | 1349 | } |
003707c7 | 1350 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1351 | nfs4_stateid_copy(&state->stateid, stateid); |
1352 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1353 | } |
1354 | ||
4a1e2feb TM |
1355 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1356 | nfs4_stateid *arg_stateid, | |
1357 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1358 | { |
1359 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1360 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1361 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1362 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1363 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1364 | } |
1365 | ||
dc0b027d | 1366 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1367 | { |
dc0b027d | 1368 | switch (fmode) { |
003707c7 TM |
1369 | case FMODE_READ: |
1370 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1371 | break; | |
1372 | case FMODE_WRITE: | |
1373 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1374 | break; | |
1375 | case FMODE_READ|FMODE_WRITE: | |
1376 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1377 | } | |
e999e80e TM |
1378 | if (!nfs_need_update_open_stateid(state, stateid)) |
1379 | return; | |
1380 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1381 | nfs4_stateid_copy(&state->stateid, stateid); | |
1382 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1383 | } |
1384 | ||
dc0b027d | 1385 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1386 | { |
8bda4e4c TM |
1387 | /* |
1388 | * Protect the call to nfs4_state_set_mode_locked and | |
1389 | * serialise the stateid update | |
1390 | */ | |
361cad3c | 1391 | spin_lock(&state->owner->so_lock); |
8bda4e4c | 1392 | write_seqlock(&state->seqlock); |
003707c7 | 1393 | if (deleg_stateid != NULL) { |
f597c537 | 1394 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1395 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1396 | } | |
1397 | if (open_stateid != NULL) | |
dc0b027d | 1398 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c | 1399 | write_sequnlock(&state->seqlock); |
dc0b027d | 1400 | update_open_stateflags(state, fmode); |
ec073428 | 1401 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1402 | } |
1403 | ||
dc0b027d | 1404 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1405 | { |
1406 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1407 | struct nfs_delegation *deleg_cur; | |
1408 | int ret = 0; | |
1409 | ||
dc0b027d | 1410 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1411 | |
1412 | rcu_read_lock(); | |
1413 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1414 | if (deleg_cur == NULL) | |
1415 | goto no_delegation; | |
1416 | ||
1417 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1418 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1419 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1420 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1421 | goto no_delegation_unlock; |
1422 | ||
1423 | if (delegation == NULL) | |
1424 | delegation = &deleg_cur->stateid; | |
f597c537 | 1425 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1426 | goto no_delegation_unlock; |
1427 | ||
b7391f44 | 1428 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1429 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1430 | ret = 1; |
1431 | no_delegation_unlock: | |
1432 | spin_unlock(&deleg_cur->lock); | |
1433 | no_delegation: | |
1434 | rcu_read_unlock(); | |
1435 | ||
1436 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1437 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1438 | ret = 1; |
1439 | } | |
4f14c194 TM |
1440 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1441 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1442 | |
1443 | return ret; | |
1444 | } | |
1445 | ||
39071e6f TM |
1446 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1447 | const nfs4_stateid *stateid) | |
1448 | { | |
1449 | struct nfs4_state *state = lsp->ls_state; | |
1450 | bool ret = false; | |
1451 | ||
1452 | spin_lock(&state->state_lock); | |
1453 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1454 | goto out_noupdate; | |
1455 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1456 | goto out_noupdate; | |
1457 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1458 | ret = true; | |
1459 | out_noupdate: | |
1460 | spin_unlock(&state->state_lock); | |
1461 | return ret; | |
1462 | } | |
34310430 | 1463 | |
dc0b027d | 1464 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1465 | { |
1466 | struct nfs_delegation *delegation; | |
1467 | ||
1468 | rcu_read_lock(); | |
1469 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1470 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1471 | rcu_read_unlock(); |
1472 | return; | |
1473 | } | |
1474 | rcu_read_unlock(); | |
57ec14c5 | 1475 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1476 | } |
1477 | ||
6ee41268 | 1478 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1479 | { |
1480 | struct nfs4_state *state = opendata->state; | |
1481 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1482 | struct nfs_delegation *delegation; | |
f448badd | 1483 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1484 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1485 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1486 | nfs4_stateid stateid; |
1487 | int ret = -EAGAIN; | |
1488 | ||
aac00a8d | 1489 | for (;;) { |
61beef75 | 1490 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1491 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1492 | update_open_stateflags(state, fmode); |
6ee41268 | 1493 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1494 | goto out_return_state; |
6ee41268 | 1495 | } |
61beef75 | 1496 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1497 | rcu_read_lock(); |
1498 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1499 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1500 | rcu_read_unlock(); |
aac00a8d | 1501 | break; |
34310430 | 1502 | } |
aac00a8d | 1503 | /* Save the delegation */ |
f597c537 | 1504 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1505 | rcu_read_unlock(); |
fa332941 | 1506 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1507 | if (!opendata->is_recover) { |
1508 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1509 | if (ret != 0) | |
1510 | goto out; | |
1511 | } | |
aac00a8d | 1512 | ret = -EAGAIN; |
34310430 TM |
1513 | |
1514 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1515 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1516 | goto out_return_state; |
aac00a8d | 1517 | } |
aac00a8d TM |
1518 | out: |
1519 | return ERR_PTR(ret); | |
1520 | out_return_state: | |
1521 | atomic_inc(&state->count); | |
1522 | return state; | |
1523 | } | |
1524 | ||
e23008ec AA |
1525 | static void |
1526 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1527 | { | |
1528 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1529 | struct nfs_delegation *delegation; | |
1530 | int delegation_flags = 0; | |
1531 | ||
1532 | rcu_read_lock(); | |
1533 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1534 | if (delegation) | |
1535 | delegation_flags = delegation->flags; | |
1536 | rcu_read_unlock(); | |
72d79ff8 TM |
1537 | switch (data->o_arg.claim) { |
1538 | default: | |
1539 | break; | |
1540 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1541 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1542 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1543 | "returning a delegation for " | |
1544 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1545 | clp->cl_hostname); | |
72d79ff8 TM |
1546 | return; |
1547 | } | |
1548 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec AA |
1549 | nfs_inode_set_delegation(state->inode, |
1550 | data->owner->so_cred, | |
1551 | &data->o_res); | |
1552 | else | |
1553 | nfs_inode_reclaim_delegation(state->inode, | |
1554 | data->owner->so_cred, | |
1555 | &data->o_res); | |
1556 | } | |
1557 | ||
1558 | /* | |
1559 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1560 | * and update the nfs4_state. | |
1561 | */ | |
1562 | static struct nfs4_state * | |
1563 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1564 | { | |
1565 | struct inode *inode = data->state->inode; | |
1566 | struct nfs4_state *state = data->state; | |
1567 | int ret; | |
1568 | ||
d2bfda2e WAA |
1569 | if (!data->rpc_done) { |
1570 | if (data->rpc_status) { | |
1571 | ret = data->rpc_status; | |
1572 | goto err; | |
1573 | } | |
1574 | /* cached opens have already been processed */ | |
1575 | goto update; | |
e23008ec AA |
1576 | } |
1577 | ||
e23008ec AA |
1578 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1579 | if (ret) | |
1580 | goto err; | |
1581 | ||
1582 | if (data->o_res.delegation_type != 0) | |
1583 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1584 | update: |
e23008ec AA |
1585 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1586 | data->o_arg.fmode); | |
d49f042a | 1587 | atomic_inc(&state->count); |
e23008ec AA |
1588 | |
1589 | return state; | |
1590 | err: | |
1591 | return ERR_PTR(ret); | |
1592 | ||
1593 | } | |
1594 | ||
1595 | static struct nfs4_state * | |
1596 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1597 | { |
1598 | struct inode *inode; | |
1599 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1600 | int ret; |
24ac23ab | 1601 | |
aac00a8d | 1602 | if (!data->rpc_done) { |
6ee41268 | 1603 | state = nfs4_try_open_cached(data); |
9759b0fb | 1604 | trace_nfs4_cached_open(data->state); |
aac00a8d TM |
1605 | goto out; |
1606 | } | |
1607 | ||
1b370bc2 | 1608 | ret = -EAGAIN; |
24ac23ab | 1609 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1610 | goto err; |
1775fd3e | 1611 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1612 | ret = PTR_ERR(inode); |
03f28e3a | 1613 | if (IS_ERR(inode)) |
1b370bc2 TM |
1614 | goto err; |
1615 | ret = -ENOMEM; | |
24ac23ab TM |
1616 | state = nfs4_get_open_state(inode, data->owner); |
1617 | if (state == NULL) | |
1b370bc2 | 1618 | goto err_put_inode; |
e23008ec AA |
1619 | if (data->o_res.delegation_type != 0) |
1620 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1621 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1622 | data->o_arg.fmode); |
24ac23ab | 1623 | iput(inode); |
aac00a8d | 1624 | out: |
7aa262b5 | 1625 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1626 | return state; |
1b370bc2 TM |
1627 | err_put_inode: |
1628 | iput(inode); | |
1629 | err: | |
1630 | return ERR_PTR(ret); | |
24ac23ab TM |
1631 | } |
1632 | ||
e23008ec AA |
1633 | static struct nfs4_state * |
1634 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1635 | { | |
1636 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1637 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1638 | return _nfs4_opendata_to_nfs4_state(data); | |
1639 | } | |
1640 | ||
864472e9 TM |
1641 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1642 | { | |
1643 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1644 | struct nfs_open_context *ctx; | |
1645 | ||
1646 | spin_lock(&state->inode->i_lock); | |
1647 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1648 | if (ctx->state != state) | |
1649 | continue; | |
1650 | get_nfs_open_context(ctx); | |
1651 | spin_unlock(&state->inode->i_lock); | |
1652 | return ctx; | |
1653 | } | |
1654 | spin_unlock(&state->inode->i_lock); | |
1655 | return ERR_PTR(-ENOENT); | |
1656 | } | |
1657 | ||
4a1c0893 TM |
1658 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1659 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1660 | { |
1661 | struct nfs4_opendata *opendata; | |
1662 | ||
4a1c0893 | 1663 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1664 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1665 | if (opendata == NULL) |
1666 | return ERR_PTR(-ENOMEM); | |
1667 | opendata->state = state; | |
1668 | atomic_inc(&state->count); | |
1669 | return opendata; | |
1670 | } | |
1671 | ||
24311f88 TM |
1672 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
1673 | fmode_t fmode) | |
864472e9 | 1674 | { |
2ced46c2 | 1675 | struct nfs4_state *newstate; |
864472e9 TM |
1676 | int ret; |
1677 | ||
24311f88 | 1678 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 1679 | return 0; |
dc0b027d TM |
1680 | opendata->o_arg.open_flags = 0; |
1681 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1682 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1683 | NFS_SB(opendata->dentry->d_sb), | |
1684 | fmode, 0); | |
2ced46c2 TM |
1685 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1686 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1687 | nfs4_init_opendata_res(opendata); | |
b257957e | 1688 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1689 | if (ret != 0) |
1690 | return ret; | |
2ced46c2 | 1691 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1692 | if (IS_ERR(newstate)) |
1693 | return PTR_ERR(newstate); | |
24311f88 TM |
1694 | if (newstate != opendata->state) |
1695 | ret = -ESTALE; | |
643168c2 | 1696 | nfs4_close_state(newstate, fmode); |
24311f88 | 1697 | return ret; |
864472e9 TM |
1698 | } |
1699 | ||
1700 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1701 | { | |
864472e9 TM |
1702 | int ret; |
1703 | ||
4f14c194 TM |
1704 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1705 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1706 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1707 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1708 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1709 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1710 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 | 1711 | smp_rmb(); |
24311f88 TM |
1712 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
1713 | if (ret != 0) | |
1714 | return ret; | |
1715 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1716 | if (ret != 0) | |
1717 | return ret; | |
1718 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1719 | if (ret != 0) | |
1720 | return ret; | |
1ac7e2fd TM |
1721 | /* |
1722 | * We may have performed cached opens for all three recoveries. | |
1723 | * Check if we need to update the current stateid. | |
1724 | */ | |
1725 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1726 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1727 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1728 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1729 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1730 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1731 | } |
864472e9 TM |
1732 | return 0; |
1733 | } | |
1734 | ||
1da177e4 LT |
1735 | /* |
1736 | * OPEN_RECLAIM: | |
1737 | * reclaim state on the server after a reboot. | |
1da177e4 | 1738 | */ |
539cd03a | 1739 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1740 | { |
1ac7e2fd | 1741 | struct nfs_delegation *delegation; |
864472e9 | 1742 | struct nfs4_opendata *opendata; |
dc0b027d | 1743 | fmode_t delegation_type = 0; |
1da177e4 LT |
1744 | int status; |
1745 | ||
4a1c0893 TM |
1746 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1747 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1748 | if (IS_ERR(opendata)) |
1749 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1750 | rcu_read_lock(); |
1751 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1752 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1753 | delegation_type = delegation->type; |
1ac7e2fd | 1754 | rcu_read_unlock(); |
864472e9 TM |
1755 | opendata->o_arg.u.delegation_type = delegation_type; |
1756 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1757 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1758 | return status; |
1759 | } | |
1760 | ||
539cd03a | 1761 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1762 | { |
1763 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1764 | struct nfs4_exception exception = { }; | |
1765 | int err; | |
1766 | do { | |
539cd03a | 1767 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1768 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1769 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1770 | continue; | |
168667c4 | 1771 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1772 | break; |
1773 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1774 | } while (exception.retry); |
1775 | return err; | |
1776 | } | |
1777 | ||
864472e9 TM |
1778 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1779 | { | |
1780 | struct nfs_open_context *ctx; | |
1781 | int ret; | |
1782 | ||
1783 | ctx = nfs4_state_find_open_context(state); | |
1784 | if (IS_ERR(ctx)) | |
91876b13 | 1785 | return -EAGAIN; |
539cd03a | 1786 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1787 | put_nfs_open_context(ctx); |
1788 | return ret; | |
1789 | } | |
1790 | ||
db4f2e63 | 1791 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1792 | { |
be76b5b6 TM |
1793 | switch (err) { |
1794 | default: | |
1795 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1796 | "%d.\n", __func__, err); | |
1797 | case 0: | |
1798 | case -ENOENT: | |
8eee52af | 1799 | case -EAGAIN: |
be76b5b6 TM |
1800 | case -ESTALE: |
1801 | break; | |
1802 | case -NFS4ERR_BADSESSION: | |
1803 | case -NFS4ERR_BADSLOT: | |
1804 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1805 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1806 | case -NFS4ERR_DEADSESSION: | |
1807 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1808 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1809 | return -EAGAIN; | |
1810 | case -NFS4ERR_STALE_CLIENTID: | |
1811 | case -NFS4ERR_STALE_STATEID: | |
1812 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1813 | case -NFS4ERR_EXPIRED: | |
1814 | /* Don't recall a delegation if it was lost */ | |
1815 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1816 | return -EAGAIN; | |
352297b9 CL |
1817 | case -NFS4ERR_MOVED: |
1818 | nfs4_schedule_migration_recovery(server); | |
1819 | return -EAGAIN; | |
8ef2f8d4 CL |
1820 | case -NFS4ERR_LEASE_MOVED: |
1821 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1822 | return -EAGAIN; | |
be76b5b6 TM |
1823 | case -NFS4ERR_DELEG_REVOKED: |
1824 | case -NFS4ERR_ADMIN_REVOKED: | |
1825 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1826 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1827 | nfs_inode_find_state_and_recover(state->inode, |
1828 | stateid); | |
1829 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1830 | return -EAGAIN; |
be76b5b6 TM |
1831 | case -NFS4ERR_DELAY: |
1832 | case -NFS4ERR_GRACE: | |
1833 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1834 | ssleep(1); | |
1835 | return -EAGAIN; | |
db4f2e63 TM |
1836 | case -ENOMEM: |
1837 | case -NFS4ERR_DENIED: | |
1838 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1839 | return 0; | |
be76b5b6 | 1840 | } |
1da177e4 LT |
1841 | return err; |
1842 | } | |
1843 | ||
24311f88 TM |
1844 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
1845 | struct nfs4_state *state, const nfs4_stateid *stateid, | |
1846 | fmode_t type) | |
db4f2e63 TM |
1847 | { |
1848 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1849 | struct nfs4_opendata *opendata; | |
24311f88 | 1850 | int err = 0; |
db4f2e63 TM |
1851 | |
1852 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1853 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1854 | if (IS_ERR(opendata)) | |
1855 | return PTR_ERR(opendata); | |
1856 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5e99b532 JL |
1857 | write_seqlock(&state->seqlock); |
1858 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1859 | write_sequnlock(&state->seqlock); | |
24311f88 TM |
1860 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1861 | switch (type & (FMODE_READ|FMODE_WRITE)) { | |
1862 | case FMODE_READ|FMODE_WRITE: | |
1863 | case FMODE_WRITE: | |
1864 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); | |
1865 | if (err) | |
1866 | break; | |
1867 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1868 | if (err) | |
1869 | break; | |
1870 | case FMODE_READ: | |
1871 | err = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1872 | } | |
db4f2e63 TM |
1873 | nfs4_opendata_put(opendata); |
1874 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1875 | } | |
1876 | ||
be05c860 CL |
1877 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1878 | { | |
1879 | struct nfs4_opendata *data = calldata; | |
1880 | ||
cb04ad2a PT |
1881 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1882 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1883 | } |
1884 | ||
cdd4e68b TM |
1885 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1886 | { | |
1887 | struct nfs4_opendata *data = calldata; | |
1888 | ||
17ead6c8 | 1889 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1890 | |
cdd4e68b | 1891 | data->rpc_status = task->tk_status; |
26e976a8 | 1892 | if (data->rpc_status == 0) { |
f597c537 | 1893 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1894 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1895 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1896 | data->rpc_done = 1; |
26e976a8 | 1897 | } |
cdd4e68b TM |
1898 | } |
1899 | ||
1900 | static void nfs4_open_confirm_release(void *calldata) | |
1901 | { | |
1902 | struct nfs4_opendata *data = calldata; | |
1903 | struct nfs4_state *state = NULL; | |
1904 | ||
1905 | /* If this request hasn't been cancelled, do nothing */ | |
1906 | if (data->cancelled == 0) | |
1907 | goto out_free; | |
1908 | /* In case of error, no cleanup! */ | |
3e309914 | 1909 | if (!data->rpc_done) |
cdd4e68b | 1910 | goto out_free; |
cdd4e68b | 1911 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1912 | if (!IS_ERR(state)) |
643168c2 | 1913 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1914 | out_free: |
c6d00e63 | 1915 | nfs4_opendata_put(data); |
cdd4e68b TM |
1916 | } |
1917 | ||
1918 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1919 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1920 | .rpc_call_done = nfs4_open_confirm_done, |
1921 | .rpc_release = nfs4_open_confirm_release, | |
1922 | }; | |
1923 | ||
1924 | /* | |
1925 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1926 | */ | |
1927 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1928 | { | |
2b0143b5 | 1929 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1930 | struct rpc_task *task; |
5138fde0 TM |
1931 | struct rpc_message msg = { |
1932 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1933 | .rpc_argp = &data->c_arg, | |
1934 | .rpc_resp = &data->c_res, | |
1935 | .rpc_cred = data->owner->so_cred, | |
1936 | }; | |
c970aa85 TM |
1937 | struct rpc_task_setup task_setup_data = { |
1938 | .rpc_client = server->client, | |
5138fde0 | 1939 | .rpc_message = &msg, |
c970aa85 TM |
1940 | .callback_ops = &nfs4_open_confirm_ops, |
1941 | .callback_data = data, | |
101070ca | 1942 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1943 | .flags = RPC_TASK_ASYNC, |
1944 | }; | |
1da177e4 LT |
1945 | int status; |
1946 | ||
17ead6c8 | 1947 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1948 | kref_get(&data->kref); |
3e309914 TM |
1949 | data->rpc_done = 0; |
1950 | data->rpc_status = 0; | |
5138fde0 | 1951 | data->timestamp = jiffies; |
e92c1e0d BC |
1952 | if (data->is_recover) |
1953 | nfs4_set_sequence_privileged(&data->c_arg.seq_args); | |
c970aa85 | 1954 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1955 | if (IS_ERR(task)) |
cdd4e68b | 1956 | return PTR_ERR(task); |
cdd4e68b TM |
1957 | status = nfs4_wait_for_completion_rpc_task(task); |
1958 | if (status != 0) { | |
1959 | data->cancelled = 1; | |
1960 | smp_wmb(); | |
1961 | } else | |
1962 | status = data->rpc_status; | |
e6b3c4db | 1963 | rpc_put_task(task); |
1da177e4 LT |
1964 | return status; |
1965 | } | |
1966 | ||
24ac23ab | 1967 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1968 | { |
24ac23ab TM |
1969 | struct nfs4_opendata *data = calldata; |
1970 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1971 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 1972 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 1973 | |
24ac23ab | 1974 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1975 | goto out_wait; |
aac00a8d TM |
1976 | /* |
1977 | * Check if we still need to send an OPEN call, or if we can use | |
1978 | * a delegation instead. | |
1979 | */ | |
1980 | if (data->state != NULL) { | |
1981 | struct nfs_delegation *delegation; | |
1982 | ||
dc0b027d | 1983 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1984 | goto out_no_action; |
aac00a8d TM |
1985 | rcu_read_lock(); |
1986 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 1987 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 1988 | goto unlock_no_action; |
aac00a8d TM |
1989 | rcu_read_unlock(); |
1990 | } | |
95b72eb0 | 1991 | /* Update client id. */ |
549b19cc | 1992 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
1993 | switch (claim) { |
1994 | default: | |
1995 | break; | |
8188df17 TM |
1996 | case NFS4_OPEN_CLAIM_PREVIOUS: |
1997 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1998 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1999 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
2000 | case NFS4_OPEN_CLAIM_FH: |
2001 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
2002 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
2003 | } | |
26e976a8 | 2004 | data->timestamp = jiffies; |
035168ab | 2005 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 2006 | &data->o_arg.seq_args, |
2240a9e2 TM |
2007 | &data->o_res.seq_res, |
2008 | task) != 0) | |
2009 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2010 | |
2011 | /* Set the create mode (note dependency on the session type) */ | |
2012 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2013 | if (data->o_arg.open_flags & O_EXCL) { | |
2014 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2015 | if (nfs4_has_persistent_session(clp)) | |
2016 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2017 | else if (clp->cl_mvops->minor_version > 0) | |
2018 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2019 | } | |
6ee41268 | 2020 | return; |
652f89f6 | 2021 | unlock_no_action: |
9759b0fb | 2022 | trace_nfs4_cached_open(data->state); |
652f89f6 | 2023 | rcu_read_unlock(); |
6ee41268 TM |
2024 | out_no_action: |
2025 | task->tk_action = NULL; | |
c8da19b9 | 2026 | out_wait: |
b75ad4cd | 2027 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2028 | } |
2029 | ||
24ac23ab TM |
2030 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2031 | { | |
2032 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2033 | |
24ac23ab | 2034 | data->rpc_status = task->tk_status; |
d898528c | 2035 | |
14516c3a TM |
2036 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
2037 | return; | |
d898528c | 2038 | |
24ac23ab | 2039 | if (task->tk_status == 0) { |
807d66d8 TM |
2040 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2041 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2042 | case S_IFREG: |
2043 | break; | |
2044 | case S_IFLNK: | |
24ac23ab | 2045 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2046 | break; |
2047 | case S_IFDIR: | |
24ac23ab | 2048 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2049 | break; |
2050 | default: | |
24ac23ab | 2051 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2052 | } |
6f926b5b | 2053 | } |
26e976a8 | 2054 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2055 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2056 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2057 | } |
3e309914 | 2058 | data->rpc_done = 1; |
24ac23ab | 2059 | } |
6f926b5b | 2060 | |
24ac23ab TM |
2061 | static void nfs4_open_release(void *calldata) |
2062 | { | |
2063 | struct nfs4_opendata *data = calldata; | |
2064 | struct nfs4_state *state = NULL; | |
2065 | ||
2066 | /* If this request hasn't been cancelled, do nothing */ | |
2067 | if (data->cancelled == 0) | |
2068 | goto out_free; | |
2069 | /* In case of error, no cleanup! */ | |
3e309914 | 2070 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2071 | goto out_free; |
2072 | /* In case we need an open_confirm, no cleanup! */ | |
2073 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2074 | goto out_free; | |
24ac23ab | 2075 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2076 | if (!IS_ERR(state)) |
643168c2 | 2077 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2078 | out_free: |
c6d00e63 | 2079 | nfs4_opendata_put(data); |
24ac23ab TM |
2080 | } |
2081 | ||
2082 | static const struct rpc_call_ops nfs4_open_ops = { | |
2083 | .rpc_call_prepare = nfs4_open_prepare, | |
2084 | .rpc_call_done = nfs4_open_done, | |
2085 | .rpc_release = nfs4_open_release, | |
2086 | }; | |
2087 | ||
b257957e | 2088 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 2089 | { |
2b0143b5 | 2090 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2091 | struct nfs_server *server = NFS_SERVER(dir); |
2092 | struct nfs_openargs *o_arg = &data->o_arg; | |
2093 | struct nfs_openres *o_res = &data->o_res; | |
2094 | struct rpc_task *task; | |
5138fde0 TM |
2095 | struct rpc_message msg = { |
2096 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2097 | .rpc_argp = o_arg, | |
2098 | .rpc_resp = o_res, | |
2099 | .rpc_cred = data->owner->so_cred, | |
2100 | }; | |
c970aa85 TM |
2101 | struct rpc_task_setup task_setup_data = { |
2102 | .rpc_client = server->client, | |
5138fde0 | 2103 | .rpc_message = &msg, |
c970aa85 TM |
2104 | .callback_ops = &nfs4_open_ops, |
2105 | .callback_data = data, | |
101070ca | 2106 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2107 | .flags = RPC_TASK_ASYNC, |
2108 | }; | |
24ac23ab TM |
2109 | int status; |
2110 | ||
a9c92d6b | 2111 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2112 | kref_get(&data->kref); |
3e309914 TM |
2113 | data->rpc_done = 0; |
2114 | data->rpc_status = 0; | |
2ced46c2 | 2115 | data->cancelled = 0; |
bdeca1b7 TM |
2116 | data->is_recover = 0; |
2117 | if (isrecover) { | |
8fe72bac | 2118 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2119 | data->is_recover = 1; |
2120 | } | |
c970aa85 | 2121 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2122 | if (IS_ERR(task)) |
2123 | return PTR_ERR(task); | |
2124 | status = nfs4_wait_for_completion_rpc_task(task); | |
2125 | if (status != 0) { | |
2126 | data->cancelled = 1; | |
2127 | smp_wmb(); | |
2128 | } else | |
2129 | status = data->rpc_status; | |
2130 | rpc_put_task(task); | |
2131 | ||
2132 | return status; | |
2133 | } | |
2134 | ||
2135 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2136 | { | |
2b0143b5 | 2137 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2138 | struct nfs_openres *o_res = &data->o_res; |
2139 | int status; | |
2140 | ||
2141 | status = nfs4_run_open_task(data, 1); | |
2142 | if (status != 0 || !data->rpc_done) | |
2143 | return status; | |
2144 | ||
6926afd1 TM |
2145 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2146 | ||
b257957e AB |
2147 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2148 | status = _nfs4_proc_open_confirm(data); | |
2149 | if (status != 0) | |
2150 | return status; | |
2151 | } | |
2152 | ||
2153 | return status; | |
2154 | } | |
2155 | ||
f3792d63 TM |
2156 | /* |
2157 | * Additional permission checks in order to distinguish between an | |
2158 | * open for read, and an open for execute. This works around the | |
2159 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2160 | * the same. | |
2161 | * Note that in the non-execute case, we want to turn off permission | |
2162 | * checking if we just created a new file (POSIX open() semantics). | |
2163 | */ | |
6168f62c WAA |
2164 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2165 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2166 | struct nfs4_state *state, fmode_t fmode, |
2167 | int openflags) | |
6168f62c WAA |
2168 | { |
2169 | struct nfs_access_entry cache; | |
2170 | u32 mask; | |
2171 | ||
2172 | /* access call failed or for some reason the server doesn't | |
2173 | * support any access modes -- defer access call until later */ | |
2174 | if (opendata->o_res.access_supported == 0) | |
2175 | return 0; | |
2176 | ||
2177 | mask = 0; | |
f3792d63 TM |
2178 | /* |
2179 | * Use openflags to check for exec, because fmode won't | |
2180 | * always have FMODE_EXEC set when file open for exec. | |
2181 | */ | |
f8d9a897 WAA |
2182 | if (openflags & __FMODE_EXEC) { |
2183 | /* ONLY check for exec rights */ | |
2184 | mask = MAY_EXEC; | |
f3792d63 | 2185 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2186 | mask = MAY_READ; |
6168f62c WAA |
2187 | |
2188 | cache.cred = cred; | |
2189 | cache.jiffies = jiffies; | |
2190 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2191 | nfs_access_add_cache(state->inode, &cache); | |
2192 | ||
bbd3a8ee | 2193 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2194 | return 0; |
2195 | ||
2196 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2197 | nfs4_close_state(state, fmode); | |
998f40b5 | 2198 | return -EACCES; |
6168f62c WAA |
2199 | } |
2200 | ||
b257957e AB |
2201 | /* |
2202 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2203 | */ | |
2204 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2205 | { | |
2b0143b5 | 2206 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2207 | struct nfs_server *server = NFS_SERVER(dir); |
2208 | struct nfs_openargs *o_arg = &data->o_arg; | |
2209 | struct nfs_openres *o_res = &data->o_res; | |
2210 | int status; | |
2211 | ||
2212 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2213 | if (!data->rpc_done) |
2214 | return status; | |
2215 | if (status != 0) { | |
2216 | if (status == -NFS4ERR_BADNAME && | |
2217 | !(o_arg->open_flags & O_CREAT)) | |
2218 | return -ENOENT; | |
24ac23ab | 2219 | return status; |
08ef7bd3 | 2220 | } |
24ac23ab | 2221 | |
6926afd1 TM |
2222 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2223 | ||
5bc2afc2 | 2224 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2225 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2226 | if (o_arg->open_flags & O_EXCL) |
2227 | data->file_created = 1; | |
2228 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2229 | data->file_created = 1; | |
2230 | } | |
0df5dd4a TM |
2231 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2232 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2233 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2234 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2235 | if (status != 0) |
24ac23ab | 2236 | return status; |
1da177e4 LT |
2237 | } |
2238 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2239 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2240 | return 0; |
1da177e4 LT |
2241 | } |
2242 | ||
d83217c1 AA |
2243 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2244 | { | |
2245 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2246 | } | |
2247 | ||
1da177e4 LT |
2248 | /* |
2249 | * OPEN_EXPIRED: | |
2250 | * reclaim state on the server after a network partition. | |
2251 | * Assumes caller holds the appropriate lock | |
2252 | */ | |
539cd03a | 2253 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2254 | { |
e56e0b78 | 2255 | struct nfs4_opendata *opendata; |
864472e9 | 2256 | int ret; |
1da177e4 | 2257 | |
4a1c0893 | 2258 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2259 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2260 | if (IS_ERR(opendata)) |
2261 | return PTR_ERR(opendata); | |
864472e9 | 2262 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2263 | if (ret == -ESTALE) |
3d4ff43d | 2264 | d_drop(ctx->dentry); |
c6d00e63 | 2265 | nfs4_opendata_put(opendata); |
864472e9 | 2266 | return ret; |
1da177e4 LT |
2267 | } |
2268 | ||
a9ed2e25 | 2269 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2270 | { |
539cd03a | 2271 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2272 | struct nfs4_exception exception = { }; |
2273 | int err; | |
2274 | ||
2275 | do { | |
539cd03a | 2276 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2277 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2278 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2279 | continue; | |
a9ed2e25 TM |
2280 | switch (err) { |
2281 | default: | |
2282 | goto out; | |
2283 | case -NFS4ERR_GRACE: | |
2284 | case -NFS4ERR_DELAY: | |
2285 | nfs4_handle_exception(server, err, &exception); | |
2286 | err = 0; | |
2287 | } | |
202b50dc | 2288 | } while (exception.retry); |
a9ed2e25 | 2289 | out: |
202b50dc TM |
2290 | return err; |
2291 | } | |
2292 | ||
1da177e4 LT |
2293 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2294 | { | |
1da177e4 | 2295 | struct nfs_open_context *ctx; |
864472e9 | 2296 | int ret; |
1da177e4 | 2297 | |
864472e9 TM |
2298 | ctx = nfs4_state_find_open_context(state); |
2299 | if (IS_ERR(ctx)) | |
91876b13 | 2300 | return -EAGAIN; |
539cd03a | 2301 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2302 | put_nfs_open_context(ctx); |
2303 | return ret; | |
1da177e4 LT |
2304 | } |
2305 | ||
4dfd4f7a TM |
2306 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2307 | { | |
2308 | nfs_remove_bad_delegation(state->inode); | |
2309 | write_seqlock(&state->seqlock); | |
2310 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2311 | write_sequnlock(&state->seqlock); | |
2312 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2313 | } | |
2314 | ||
2315 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2316 | { | |
2317 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2318 | nfs_finish_clear_delegation_stateid(state); | |
2319 | } | |
2320 | ||
2321 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2322 | { | |
2323 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2324 | nfs40_clear_delegation_stateid(state); | |
2325 | return nfs4_open_expired(sp, state); | |
2326 | } | |
2327 | ||
f062eb6c | 2328 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2329 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2330 | { |
f062eb6c | 2331 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2332 | nfs4_stateid stateid; |
ab7cb0df | 2333 | struct nfs_delegation *delegation; |
0c116cad TM |
2334 | struct rpc_cred *cred; |
2335 | int status; | |
3e60ffdd | 2336 | |
ab7cb0df TM |
2337 | /* Get the delegation credential for use by test/free_stateid */ |
2338 | rcu_read_lock(); | |
2339 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2340 | if (delegation == NULL) { |
ab7cb0df | 2341 | rcu_read_unlock(); |
0c116cad TM |
2342 | return; |
2343 | } | |
2344 | ||
2345 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2346 | cred = get_rpccred(delegation->cred); | |
2347 | rcu_read_unlock(); | |
2348 | status = nfs41_test_stateid(server, &stateid, cred); | |
2349 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2350 | |
3e60ffdd CL |
2351 | if (status != NFS_OK) { |
2352 | /* Free the stateid unless the server explicitly | |
2353 | * informs us the stateid is unrecognized. */ | |
2354 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2355 | nfs41_free_stateid(server, &stateid, cred); |
2356 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2357 | } |
ab7cb0df | 2358 | |
0c116cad | 2359 | put_rpccred(cred); |
3e60ffdd CL |
2360 | } |
2361 | ||
2362 | /** | |
2363 | * nfs41_check_open_stateid - possibly free an open stateid | |
2364 | * | |
2365 | * @state: NFSv4 state for an inode | |
2366 | * | |
2367 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2368 | * Otherwise a negative NFS4ERR value is returned. | |
2369 | */ | |
2370 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2371 | { | |
2372 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2373 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2374 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2375 | int status; |
2376 | ||
2377 | /* If a state reset has been done, test_stateid is unneeded */ | |
2378 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2379 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2380 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2381 | return -NFS4ERR_BAD_STATEID; | |
2382 | ||
ab7cb0df | 2383 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2384 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2385 | if (status != NFS_OK) { |
2386 | /* Free the stateid unless the server explicitly | |
2387 | * informs us the stateid is unrecognized. */ | |
2388 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2389 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2390 | |
2391 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2392 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2393 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2394 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2395 | } |
2396 | return status; | |
2397 | } | |
2398 | ||
2399 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2400 | { | |
eb64cf96 | 2401 | int status; |
b01dd1d8 | 2402 | |
0c116cad | 2403 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2404 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2405 | if (status != NFS_OK) |
2406 | status = nfs4_open_expired(sp, state); | |
2407 | return status; | |
f062eb6c BS |
2408 | } |
2409 | #endif | |
2410 | ||
aa53ed54 JL |
2411 | /* |
2412 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2413 | * fields corresponding to attributes that were used to store the verifier. | |
2414 | * Make sure we clobber those fields in the later setattr call | |
2415 | */ | |
5334c5bd KM |
2416 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2417 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2418 | { |
5334c5bd KM |
2419 | const u32 *attrset = opendata->o_res.attrset; |
2420 | ||
2421 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2422 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2423 | sattr->ia_valid |= ATTR_ATIME; | |
2424 | ||
5334c5bd | 2425 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2426 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2427 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2428 | |
2429 | /* Except MODE, it seems harmless of setting twice. */ | |
2430 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2431 | sattr->ia_valid &= ~ATTR_MODE; | |
2432 | ||
2433 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2434 | *label = NULL; | |
aa53ed54 JL |
2435 | } |
2436 | ||
c21443c2 TM |
2437 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2438 | fmode_t fmode, | |
2439 | int flags, | |
3efb9722 | 2440 | struct nfs_open_context *ctx) |
c21443c2 TM |
2441 | { |
2442 | struct nfs4_state_owner *sp = opendata->owner; | |
2443 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2444 | struct dentry *dentry; |
c21443c2 TM |
2445 | struct nfs4_state *state; |
2446 | unsigned int seq; | |
2447 | int ret; | |
2448 | ||
2449 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2450 | ||
2451 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2452 | if (ret != 0) |
c21443c2 TM |
2453 | goto out; |
2454 | ||
2455 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2456 | ret = PTR_ERR(state); | |
2457 | if (IS_ERR(state)) | |
2458 | goto out; | |
2459 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2460 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2461 | ||
275bb307 | 2462 | dentry = opendata->dentry; |
2b0143b5 | 2463 | if (d_really_is_negative(dentry)) { |
668d0cd5 | 2464 | struct dentry *alias; |
275bb307 | 2465 | d_drop(dentry); |
668d0cd5 AV |
2466 | alias = d_exact_alias(dentry, state->inode); |
2467 | if (!alias) | |
2468 | alias = d_splice_alias(igrab(state->inode), dentry); | |
2469 | /* d_splice_alias() can't fail here - it's a non-directory */ | |
2470 | if (alias) { | |
275bb307 | 2471 | dput(ctx->dentry); |
668d0cd5 | 2472 | ctx->dentry = dentry = alias; |
275bb307 TM |
2473 | } |
2474 | nfs_set_verifier(dentry, | |
2b0143b5 | 2475 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2476 | } |
2477 | ||
c21443c2 TM |
2478 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2479 | if (ret != 0) | |
2480 | goto out; | |
2481 | ||
3efb9722 | 2482 | ctx->state = state; |
2b0143b5 | 2483 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2484 | nfs_inode_attach_open_context(ctx); |
2485 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2486 | nfs4_schedule_stateid_recovery(server, state); | |
2487 | } | |
c21443c2 TM |
2488 | out: |
2489 | return ret; | |
2490 | } | |
2491 | ||
1da177e4 | 2492 | /* |
24ac23ab | 2493 | * Returns a referenced nfs4_state |
1da177e4 | 2494 | */ |
82be417a | 2495 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2496 | struct nfs_open_context *ctx, |
82be417a AA |
2497 | int flags, |
2498 | struct iattr *sattr, | |
5bc2afc2 TM |
2499 | struct nfs4_label *label, |
2500 | int *opened) | |
1da177e4 LT |
2501 | { |
2502 | struct nfs4_state_owner *sp; | |
2503 | struct nfs4_state *state = NULL; | |
2504 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2505 | struct nfs4_opendata *opendata; |
4197a055 TM |
2506 | struct dentry *dentry = ctx->dentry; |
2507 | struct rpc_cred *cred = ctx->cred; | |
2508 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2509 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2510 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2511 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2512 | int status; |
1da177e4 LT |
2513 | |
2514 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2515 | status = -ENOMEM; |
d1e284d5 TM |
2516 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2517 | if (sp == NULL) { | |
1da177e4 LT |
2518 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2519 | goto out_err; | |
2520 | } | |
58d9714a TM |
2521 | status = nfs4_recover_expired_lease(server); |
2522 | if (status != 0) | |
b4454fe1 | 2523 | goto err_put_state_owner; |
2b0143b5 DH |
2524 | if (d_really_is_positive(dentry)) |
2525 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2526 | status = -ENOMEM; |
2b0143b5 | 2527 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2528 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2529 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2530 | label, claim, GFP_KERNEL); |
e56e0b78 | 2531 | if (opendata == NULL) |
95d35cb4 | 2532 | goto err_put_state_owner; |
1da177e4 | 2533 | |
14c43f76 DQ |
2534 | if (label) { |
2535 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2536 | if (IS_ERR(olabel)) { | |
2537 | status = PTR_ERR(olabel); | |
2538 | goto err_opendata_put; | |
2539 | } | |
2540 | } | |
2541 | ||
e911b815 TM |
2542 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2543 | if (!opendata->f_attr.mdsthreshold) { | |
2544 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2545 | if (!opendata->f_attr.mdsthreshold) | |
2546 | goto err_free_label; | |
2547 | } | |
1549210f | 2548 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2549 | } |
2b0143b5 DH |
2550 | if (d_really_is_positive(dentry)) |
2551 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2552 | |
3efb9722 | 2553 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2554 | if (status != 0) |
14c43f76 | 2555 | goto err_free_label; |
3efb9722 | 2556 | state = ctx->state; |
6168f62c | 2557 | |
efcbc04e | 2558 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2559 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2560 | nfs4_exclusive_attrset(opendata, sattr, &label); |
0ab64e0e TM |
2561 | |
2562 | nfs_fattr_init(opendata->o_res.f_attr); | |
2563 | status = nfs4_do_setattr(state->inode, cred, | |
2564 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2565 | state, label, olabel); |
2566 | if (status == 0) { | |
f044636d TM |
2567 | nfs_setattr_update_inode(state->inode, sattr, |
2568 | opendata->o_res.f_attr); | |
aa9c2669 | 2569 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2570 | } |
0ab64e0e | 2571 | } |
c5c3fb5f | 2572 | if (opened && opendata->file_created) |
5bc2afc2 | 2573 | *opened |= FILE_CREATED; |
82be417a | 2574 | |
e911b815 | 2575 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2576 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2577 | opendata->f_attr.mdsthreshold = NULL; |
2578 | } | |
82be417a | 2579 | |
14c43f76 DQ |
2580 | nfs4_label_free(olabel); |
2581 | ||
c6d00e63 | 2582 | nfs4_opendata_put(opendata); |
1da177e4 | 2583 | nfs4_put_state_owner(sp); |
1da177e4 | 2584 | return 0; |
14c43f76 DQ |
2585 | err_free_label: |
2586 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2587 | err_opendata_put: |
2588 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2589 | err_put_state_owner: |
2590 | nfs4_put_state_owner(sp); | |
1da177e4 | 2591 | out_err: |
1da177e4 LT |
2592 | return status; |
2593 | } | |
2594 | ||
2595 | ||
82be417a | 2596 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2597 | struct nfs_open_context *ctx, |
82be417a AA |
2598 | int flags, |
2599 | struct iattr *sattr, | |
5bc2afc2 TM |
2600 | struct nfs4_label *label, |
2601 | int *opened) | |
1da177e4 | 2602 | { |
49f9a0fa | 2603 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2604 | struct nfs4_exception exception = { }; |
2605 | struct nfs4_state *res; | |
2606 | int status; | |
2607 | ||
2608 | do { | |
5bc2afc2 | 2609 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2610 | res = ctx->state; |
42113a75 | 2611 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2612 | if (status == 0) |
2613 | break; | |
2614 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2615 | * book-keeping w.r.t. state-changing operations | |
2616 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2617 | * It is actually a sign of a bug on the client or on the server. | |
2618 | * | |
2619 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2620 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2621 | * have unhashed the old state_owner for us, and that we can |
2622 | * therefore safely retry using a new one. We should still warn | |
2623 | * the user though... | |
2624 | */ | |
2625 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2626 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2627 | " returned a bad sequence-id error!\n", |
2628 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2629 | exception.retry = 1; |
2630 | continue; | |
2631 | } | |
550f5747 TM |
2632 | /* |
2633 | * BAD_STATEID on OPEN means that the server cancelled our | |
2634 | * state before it received the OPEN_CONFIRM. | |
2635 | * Recover by retrying the request as per the discussion | |
2636 | * on Page 181 of RFC3530. | |
2637 | */ | |
2638 | if (status == -NFS4ERR_BAD_STATEID) { | |
2639 | exception.retry = 1; | |
2640 | continue; | |
2641 | } | |
aac00a8d TM |
2642 | if (status == -EAGAIN) { |
2643 | /* We must have found a delegation */ | |
2644 | exception.retry = 1; | |
2645 | continue; | |
2646 | } | |
49f9a0fa TM |
2647 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2648 | continue; | |
2649 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2650 | status, &exception)); |
2651 | } while (exception.retry); | |
2652 | return res; | |
2653 | } | |
2654 | ||
659bfcd6 TM |
2655 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2656 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2657 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2658 | struct nfs4_label *olabel) | |
1da177e4 | 2659 | { |
3e4f6290 | 2660 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2661 | struct nfs_setattrargs arg = { |
3e4f6290 | 2662 | .fh = NFS_FH(inode), |
1da177e4 LT |
2663 | .iap = sattr, |
2664 | .server = server, | |
2665 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2666 | .label = ilabel, |
1da177e4 LT |
2667 | }; |
2668 | struct nfs_setattrres res = { | |
2669 | .fattr = fattr, | |
1775fd3e | 2670 | .label = olabel, |
1da177e4 LT |
2671 | .server = server, |
2672 | }; | |
2673 | struct rpc_message msg = { | |
659bfcd6 TM |
2674 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2675 | .rpc_argp = &arg, | |
2676 | .rpc_resp = &res, | |
2677 | .rpc_cred = cred, | |
1da177e4 | 2678 | }; |
26e976a8 | 2679 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2680 | fmode_t fmode; |
2681 | bool truncate; | |
65e4308d | 2682 | int status; |
1da177e4 | 2683 | |
aa9c2669 DQ |
2684 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2685 | if (ilabel) | |
2686 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2687 | ||
0e574af1 | 2688 | nfs_fattr_init(fattr); |
1da177e4 | 2689 | |
ee3ae84e TM |
2690 | /* Servers should only apply open mode checks for file size changes */ |
2691 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2692 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2693 | ||
2694 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2695 | /* Use that stateid */ | |
0418dae1 | 2696 | } else if (truncate && state != NULL) { |
2a369153 TM |
2697 | struct nfs_lockowner lockowner = { |
2698 | .l_owner = current->files, | |
2699 | .l_pid = current->tgid, | |
2700 | }; | |
0418dae1 TM |
2701 | if (!nfs4_valid_open_stateid(state)) |
2702 | return -EBADF; | |
2703 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2704 | &lockowner) == -EIO) | |
2705 | return -EBADF; | |
08e9eac4 | 2706 | } else |
f597c537 | 2707 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2708 | |
7c513058 | 2709 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2710 | if (status == 0 && state != NULL) |
2711 | renew_lease(server, timestamp); | |
48c9579a | 2712 | trace_nfs4_setattr(inode, &arg.stateid, status); |
65e4308d | 2713 | return status; |
1da177e4 LT |
2714 | } |
2715 | ||
659bfcd6 TM |
2716 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2717 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2718 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2719 | struct nfs4_label *olabel) | |
1da177e4 | 2720 | { |
3e4f6290 | 2721 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2722 | struct nfs4_exception exception = { |
2723 | .state = state, | |
3114ea7a | 2724 | .inode = inode, |
a1d0b5ee | 2725 | }; |
1da177e4 LT |
2726 | int err; |
2727 | do { | |
1775fd3e | 2728 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
451146be TM |
2729 | switch (err) { |
2730 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2731 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2732 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2733 | "applying open mode checks to " | |
2734 | "a SETATTR that is not " | |
2735 | "changing file size.\n", | |
2736 | server->nfs_client->cl_hostname); | |
2737 | } | |
451146be TM |
2738 | if (state && !(state->state & FMODE_WRITE)) { |
2739 | err = -EBADF; | |
2740 | if (sattr->ia_valid & ATTR_OPEN) | |
2741 | err = -EACCES; | |
2742 | goto out; | |
2743 | } | |
2744 | } | |
2745 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2746 | } while (exception.retry); |
451146be | 2747 | out: |
1da177e4 LT |
2748 | return err; |
2749 | } | |
2750 | ||
500d701f PT |
2751 | static bool |
2752 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
2753 | { | |
2754 | if (inode == NULL || !nfs_have_layout(inode)) | |
2755 | return false; | |
2756 | ||
2757 | return pnfs_wait_on_layoutreturn(inode, task); | |
2758 | } | |
2759 | ||
1da177e4 LT |
2760 | struct nfs4_closedata { |
2761 | struct inode *inode; | |
2762 | struct nfs4_state *state; | |
2763 | struct nfs_closeargs arg; | |
2764 | struct nfs_closeres res; | |
516a6af6 | 2765 | struct nfs_fattr fattr; |
26e976a8 | 2766 | unsigned long timestamp; |
f7e8917a FI |
2767 | bool roc; |
2768 | u32 roc_barrier; | |
1da177e4 LT |
2769 | }; |
2770 | ||
963d8fe5 | 2771 | static void nfs4_free_closedata(void *data) |
9512135d | 2772 | { |
963d8fe5 TM |
2773 | struct nfs4_closedata *calldata = data; |
2774 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2775 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2776 | |
f7e8917a FI |
2777 | if (calldata->roc) |
2778 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2779 | nfs4_put_open_state(calldata->state); |
2780 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2781 | nfs4_put_state_owner(sp); |
322b2b90 | 2782 | nfs_sb_deactive(sb); |
9512135d TM |
2783 | kfree(calldata); |
2784 | } | |
2785 | ||
963d8fe5 | 2786 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2787 | { |
963d8fe5 | 2788 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2789 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2790 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2791 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2792 | |
a3ca5651 | 2793 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2794 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2795 | return; | |
42113a75 | 2796 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2797 | /* hmm. we are done with the inode, and in the process of freeing |
2798 | * the state_owner. we keep this around to process errors | |
2799 | */ | |
1da177e4 LT |
2800 | switch (task->tk_status) { |
2801 | case 0: | |
412f6c4c | 2802 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2803 | if (calldata->roc) |
f7e8917a FI |
2804 | pnfs_roc_set_barrier(state->inode, |
2805 | calldata->roc_barrier); | |
26e976a8 | 2806 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2807 | break; |
69794ad7 | 2808 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2809 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2810 | case -NFS4ERR_OLD_STATEID: |
2811 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2812 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2813 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2814 | &state->open_stateid)) { |
566fcec6 TM |
2815 | rpc_restart_call_prepare(task); |
2816 | goto out_release; | |
2817 | } | |
dc0b027d | 2818 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2819 | break; |
1da177e4 | 2820 | default: |
8478eaa1 | 2821 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2822 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2823 | goto out_release; |
2824 | } | |
1da177e4 | 2825 | } |
4a1e2feb TM |
2826 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
2827 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 2828 | out_release: |
72211dbe | 2829 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2830 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2831 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2832 | } |
2833 | ||
4ce70ada | 2834 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2835 | { |
4ce70ada | 2836 | struct nfs4_closedata *calldata = data; |
9512135d | 2837 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2838 | struct inode *inode = calldata->inode; |
aee7af35 | 2839 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2840 | int call_close = 0; |
9512135d | 2841 | |
a3ca5651 | 2842 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2843 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2844 | goto out_wait; |
003707c7 | 2845 | |
88069f77 | 2846 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2847 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2848 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2849 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2850 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2851 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2852 | /* Calculate the change in open mode */ |
cd9288ff | 2853 | calldata->arg.fmode = 0; |
e7616923 | 2854 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2855 | if (state->n_rdonly == 0) |
2856 | call_close |= is_rdonly; | |
2857 | else if (is_rdonly) | |
2858 | calldata->arg.fmode |= FMODE_READ; | |
2859 | if (state->n_wronly == 0) | |
2860 | call_close |= is_wronly; | |
2861 | else if (is_wronly) | |
2862 | calldata->arg.fmode |= FMODE_WRITE; | |
2863 | } else if (is_rdwr) | |
2864 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2865 | ||
2866 | if (calldata->arg.fmode == 0) | |
2867 | call_close |= is_rdwr; | |
2868 | ||
5d422301 TM |
2869 | if (!nfs4_valid_open_stateid(state)) |
2870 | call_close = 0; | |
4cecb76f | 2871 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2872 | |
2873 | if (!call_close) { | |
963d8fe5 | 2874 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2875 | goto out_no_action; |
9512135d | 2876 | } |
88069f77 | 2877 | |
500d701f PT |
2878 | if (nfs4_wait_on_layoutreturn(inode, task)) { |
2879 | nfs_release_seqid(calldata->arg.seqid); | |
2880 | goto out_wait; | |
2881 | } | |
2882 | ||
3c13cb5b | 2883 | if (calldata->arg.fmode == 0) |
88069f77 | 2884 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2885 | if (calldata->roc) |
2886 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2887 | ||
6ae37339 TM |
2888 | calldata->arg.share_access = |
2889 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2890 | calldata->arg.fmode, 0); | |
88069f77 | 2891 | |
516a6af6 | 2892 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2893 | calldata->timestamp = jiffies; |
7fdab069 | 2894 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2895 | &calldata->arg.seq_args, |
2896 | &calldata->res.seq_res, | |
2240a9e2 TM |
2897 | task) != 0) |
2898 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2899 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2900 | return; |
2901 | out_no_action: | |
2902 | task->tk_action = NULL; | |
2903 | out_wait: | |
2904 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2905 | } |
2906 | ||
963d8fe5 | 2907 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2908 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2909 | .rpc_call_done = nfs4_close_done, |
2910 | .rpc_release = nfs4_free_closedata, | |
2911 | }; | |
2912 | ||
fe08c546 PT |
2913 | static bool nfs4_roc(struct inode *inode) |
2914 | { | |
40dd4b7a | 2915 | if (!nfs_have_layout(inode)) |
fe08c546 | 2916 | return false; |
fe08c546 PT |
2917 | return pnfs_roc(inode); |
2918 | } | |
2919 | ||
1da177e4 LT |
2920 | /* |
2921 | * It is possible for data to be read/written from a mem-mapped file | |
2922 | * after the sys_close call (which hits the vfs layer as a flush). | |
2923 | * This means that we can't safely call nfsv4 close on a file until | |
2924 | * the inode is cleared. This in turn means that we are not good | |
2925 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2926 | * share state even when we are done with one of the three share | |
2927 | * stateid's in the inode. | |
2928 | * | |
2929 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2930 | */ | |
1f7977c1 | 2931 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2932 | { |
4a35bd41 | 2933 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2934 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2935 | struct nfs4_closedata *calldata; |
b39e625b TM |
2936 | struct nfs4_state_owner *sp = state->owner; |
2937 | struct rpc_task *task; | |
5138fde0 TM |
2938 | struct rpc_message msg = { |
2939 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2940 | .rpc_cred = state->owner->so_cred, | |
2941 | }; | |
c970aa85 TM |
2942 | struct rpc_task_setup task_setup_data = { |
2943 | .rpc_client = server->client, | |
5138fde0 | 2944 | .rpc_message = &msg, |
c970aa85 | 2945 | .callback_ops = &nfs4_close_ops, |
101070ca | 2946 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2947 | .flags = RPC_TASK_ASYNC, |
2948 | }; | |
9512135d | 2949 | int status = -ENOMEM; |
1da177e4 | 2950 | |
fa940720 WAA |
2951 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2952 | &task_setup_data.rpc_client, &msg); | |
2953 | ||
8535b2be | 2954 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2955 | if (calldata == NULL) |
9512135d | 2956 | goto out; |
a9c92d6b | 2957 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2958 | calldata->inode = state->inode; |
1da177e4 | 2959 | calldata->state = state; |
4a35bd41 | 2960 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2961 | /* Serialization for the sequence id */ |
63f5f796 TM |
2962 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2963 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2964 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2965 | goto out_free_calldata; |
dc0b027d | 2966 | calldata->arg.fmode = 0; |
a65318bf | 2967 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2968 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2969 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2970 | calldata->res.server = server; |
fe08c546 | 2971 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2972 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2973 | |
1174dd1f TM |
2974 | msg.rpc_argp = &calldata->arg; |
2975 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2976 | task_setup_data.callback_data = calldata; |
2977 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2978 | if (IS_ERR(task)) |
2979 | return PTR_ERR(task); | |
a49c3c77 TM |
2980 | status = 0; |
2981 | if (wait) | |
2982 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2983 | rpc_put_task(task); |
a49c3c77 | 2984 | return status; |
9512135d TM |
2985 | out_free_calldata: |
2986 | kfree(calldata); | |
2987 | out: | |
b39e625b TM |
2988 | nfs4_put_open_state(state); |
2989 | nfs4_put_state_owner(sp); | |
9512135d | 2990 | return status; |
1da177e4 LT |
2991 | } |
2992 | ||
2b484297 | 2993 | static struct inode * |
5bc2afc2 TM |
2994 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2995 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2996 | { |
1da177e4 | 2997 | struct nfs4_state *state; |
aa9c2669 DQ |
2998 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2999 | ||
3000 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 3001 | |
565277f6 | 3002 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 3003 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
3004 | |
3005 | nfs4_label_release_security(label); | |
3006 | ||
f46e0bd3 TM |
3007 | if (IS_ERR(state)) |
3008 | return ERR_CAST(state); | |
275bb307 | 3009 | return state->inode; |
1da177e4 LT |
3010 | } |
3011 | ||
1185a552 | 3012 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3013 | { |
3014 | if (ctx->state == NULL) | |
3015 | return; | |
3016 | if (is_sync) | |
643168c2 | 3017 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 3018 | else |
643168c2 | 3019 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 3020 | } |
1da177e4 | 3021 | |
b944dba3 TM |
3022 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3023 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 3024 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 3025 | |
1da177e4 LT |
3026 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3027 | { | |
8c61282f | 3028 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3029 | struct nfs4_server_caps_arg args = { |
3030 | .fhandle = fhandle, | |
8c61282f | 3031 | .bitmask = bitmask, |
43652ad5 | 3032 | }; |
1da177e4 LT |
3033 | struct nfs4_server_caps_res res = {}; |
3034 | struct rpc_message msg = { | |
3035 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3036 | .rpc_argp = &args, |
1da177e4 LT |
3037 | .rpc_resp = &res, |
3038 | }; | |
3039 | int status; | |
3040 | ||
8c61282f KM |
3041 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3042 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3043 | FATTR4_WORD0_LINK_SUPPORT | | |
3044 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3045 | FATTR4_WORD0_ACLSUPPORT; | |
3046 | if (minorversion) | |
3047 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3048 | ||
7c513058 | 3049 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3050 | if (status == 0) { |
b944dba3 | 3051 | /* Sanity check the server answers */ |
8c61282f | 3052 | switch (minorversion) { |
b944dba3 TM |
3053 | case 0: |
3054 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3055 | res.attr_bitmask[2] = 0; | |
3056 | break; | |
3057 | case 1: | |
3058 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3059 | break; | |
3060 | case 2: | |
3061 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3062 | } | |
1da177e4 | 3063 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
3064 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
3065 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
3066 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
3067 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
3068 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
3069 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
3070 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3071 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3072 | server->caps |= NFS_CAP_ACLS; |
3073 | if (res.has_links != 0) | |
3074 | server->caps |= NFS_CAP_HARDLINKS; | |
3075 | if (res.has_symlinks != 0) | |
3076 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
3077 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
3078 | server->caps |= NFS_CAP_FILEID; | |
3079 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
3080 | server->caps |= NFS_CAP_MODE; | |
3081 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
3082 | server->caps |= NFS_CAP_NLINK; | |
3083 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
3084 | server->caps |= NFS_CAP_OWNER; | |
3085 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
3086 | server->caps |= NFS_CAP_OWNER_GROUP; | |
3087 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
3088 | server->caps |= NFS_CAP_ATIME; | |
3089 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
3090 | server->caps |= NFS_CAP_CTIME; | |
3091 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
3092 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
3093 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3094 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3095 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3096 | #endif | |
3097 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
3098 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3099 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3100 | |
a65318bf TM |
3101 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3102 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3103 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3104 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
3105 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3106 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 3107 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3108 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3109 | } |
cccef3b9 | 3110 | |
1da177e4 LT |
3111 | return status; |
3112 | } | |
3113 | ||
55a97593 | 3114 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
3115 | { |
3116 | struct nfs4_exception exception = { }; | |
3117 | int err; | |
3118 | do { | |
3119 | err = nfs4_handle_exception(server, | |
3120 | _nfs4_server_capabilities(server, fhandle), | |
3121 | &exception); | |
3122 | } while (exception.retry); | |
3123 | return err; | |
3124 | } | |
3125 | ||
3126 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3127 | struct nfs_fsinfo *info) | |
3128 | { | |
aa9c2669 | 3129 | u32 bitmask[3]; |
1da177e4 | 3130 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3131 | .bitmask = bitmask, |
1da177e4 LT |
3132 | }; |
3133 | struct nfs4_lookup_res res = { | |
3134 | .server = server, | |
0e574af1 | 3135 | .fattr = info->fattr, |
1da177e4 LT |
3136 | .fh = fhandle, |
3137 | }; | |
3138 | struct rpc_message msg = { | |
3139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3140 | .rpc_argp = &args, | |
3141 | .rpc_resp = &res, | |
3142 | }; | |
008f55d0 | 3143 | |
aa9c2669 DQ |
3144 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3145 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3146 | /* | |
3147 | * Process the label in the upcoming getfattr | |
3148 | */ | |
3149 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3150 | ||
0e574af1 | 3151 | nfs_fattr_init(info->fattr); |
7c513058 | 3152 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3153 | } |
3154 | ||
3155 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3156 | struct nfs_fsinfo *info) | |
3157 | { | |
3158 | struct nfs4_exception exception = { }; | |
3159 | int err; | |
3160 | do { | |
fb8a5ba8 | 3161 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3162 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3163 | switch (err) { |
3164 | case 0: | |
3165 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3166 | goto out; |
fb8a5ba8 BS |
3167 | default: |
3168 | err = nfs4_handle_exception(server, err, &exception); | |
3169 | } | |
1da177e4 | 3170 | } while (exception.retry); |
05e9cfb4 | 3171 | out: |
1da177e4 LT |
3172 | return err; |
3173 | } | |
3174 | ||
8f70e95f BS |
3175 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3176 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3177 | { | |
c2190661 TM |
3178 | struct rpc_auth_create_args auth_args = { |
3179 | .pseudoflavor = flavor, | |
3180 | }; | |
8f70e95f BS |
3181 | struct rpc_auth *auth; |
3182 | int ret; | |
3183 | ||
c2190661 | 3184 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3185 | if (IS_ERR(auth)) { |
75bc8821 | 3186 | ret = -EACCES; |
8f70e95f BS |
3187 | goto out; |
3188 | } | |
3189 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3190 | out: |
3191 | return ret; | |
3192 | } | |
3193 | ||
9a744ba3 CL |
3194 | /* |
3195 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3196 | * | |
3197 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3198 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3199 | * | |
3200 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3201 | * negative errno value. | |
3202 | */ | |
801a16dc | 3203 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3204 | struct nfs_fsinfo *info) |
1da177e4 | 3205 | { |
9a744ba3 CL |
3206 | /* Per 3530bis 15.33.5 */ |
3207 | static const rpc_authflavor_t flav_array[] = { | |
3208 | RPC_AUTH_GSS_KRB5P, | |
3209 | RPC_AUTH_GSS_KRB5I, | |
3210 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3211 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3212 | RPC_AUTH_NULL, |
3213 | }; | |
3214 | int status = -EPERM; | |
3215 | size_t i; | |
6a1a1e34 | 3216 | |
4d4b69dd WAA |
3217 | if (server->auth_info.flavor_len > 0) { |
3218 | /* try each flavor specified by user */ | |
3219 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3220 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3221 | server->auth_info.flavors[i]); | |
3222 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3223 | continue; | |
3224 | break; | |
3225 | } | |
3226 | } else { | |
3227 | /* no flavors specified by user, try default list */ | |
3228 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3229 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3230 | flav_array[i]); | |
3231 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3232 | continue; | |
3233 | break; | |
3234 | } | |
8f70e95f | 3235 | } |
9a744ba3 | 3236 | |
fb8a5ba8 BS |
3237 | /* |
3238 | * -EACCESS could mean that the user doesn't have correct permissions | |
3239 | * to access the mount. It could also mean that we tried to mount | |
3240 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3241 | * existing mount programs don't handle -EACCES very well so it should | |
3242 | * be mapped to -EPERM instead. | |
3243 | */ | |
3244 | if (status == -EACCES) | |
3245 | status = -EPERM; | |
801a16dc BS |
3246 | return status; |
3247 | } | |
3248 | ||
2ed4b95b CL |
3249 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3250 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3251 | { | |
3252 | int mv = server->nfs_client->cl_minorversion; | |
3253 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3254 | } | |
3255 | ||
3256 | /** | |
3257 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3258 | * @server: initialized nfs_server handle | |
3259 | * @fhandle: we fill in the pseudo-fs root file handle | |
3260 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3261 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3262 | * |
3263 | * Returns zero on success, or a negative errno. | |
801a16dc | 3264 | */ |
3028eb2b | 3265 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3266 | struct nfs_fsinfo *info, |
3267 | bool auth_probe) | |
801a16dc | 3268 | { |
c7757074 | 3269 | int status = 0; |
2ed4b95b | 3270 | |
c7757074 | 3271 | if (!auth_probe) |
5e6b1990 | 3272 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3273 | |
3274 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
2ed4b95b CL |
3275 | status = nfs4_do_find_root_sec(server, fhandle, info); |
3276 | ||
1da177e4 LT |
3277 | if (status == 0) |
3278 | status = nfs4_server_capabilities(server, fhandle); | |
3279 | if (status == 0) | |
3280 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3281 | |
c12e87f4 | 3282 | return nfs4_map_errors(status); |
1da177e4 LT |
3283 | } |
3284 | ||
bae36241 BS |
3285 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3286 | struct nfs_fsinfo *info) | |
3287 | { | |
3288 | int error; | |
3289 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3290 | struct nfs4_label *label = NULL; |
bae36241 BS |
3291 | |
3292 | error = nfs4_server_capabilities(server, mntfh); | |
3293 | if (error < 0) { | |
3294 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3295 | return error; | |
3296 | } | |
3297 | ||
14c43f76 DQ |
3298 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3299 | if (IS_ERR(label)) | |
3300 | return PTR_ERR(label); | |
3301 | ||
1775fd3e | 3302 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3303 | if (error < 0) { |
3304 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3305 | goto err_free_label; |
bae36241 BS |
3306 | } |
3307 | ||
3308 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3309 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3310 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3311 | ||
14c43f76 DQ |
3312 | err_free_label: |
3313 | nfs4_label_free(label); | |
3314 | ||
bae36241 BS |
3315 | return error; |
3316 | } | |
3317 | ||
6b97fd3d MN |
3318 | /* |
3319 | * Get locations and (maybe) other attributes of a referral. | |
3320 | * Note that we'll actually follow the referral later when | |
3321 | * we detect fsid mismatch in inode revalidation | |
3322 | */ | |
f05d147f BS |
3323 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3324 | const struct qstr *name, struct nfs_fattr *fattr, | |
3325 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3326 | { |
3327 | int status = -ENOMEM; | |
3328 | struct page *page = NULL; | |
3329 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3330 | |
3331 | page = alloc_page(GFP_KERNEL); | |
3332 | if (page == NULL) | |
3333 | goto out; | |
3334 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3335 | if (locations == NULL) | |
3336 | goto out; | |
3337 | ||
f05d147f | 3338 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3339 | if (status != 0) |
3340 | goto out; | |
519ae255 CL |
3341 | |
3342 | /* | |
3343 | * If the fsid didn't change, this is a migration event, not a | |
3344 | * referral. Cause us to drop into the exception handler, which | |
3345 | * will kick off migration recovery. | |
3346 | */ | |
6b97fd3d | 3347 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3348 | dprintk("%s: server did not return a different fsid for" |
3349 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3350 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3351 | goto out; |
3352 | } | |
533eb461 AA |
3353 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3354 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3355 | |
533eb461 | 3356 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3357 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3358 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3359 | out: | |
3360 | if (page) | |
3361 | __free_page(page); | |
5d7ca35a | 3362 | kfree(locations); |
6b97fd3d MN |
3363 | return status; |
3364 | } | |
3365 | ||
1775fd3e DQ |
3366 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3367 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3368 | { |
3369 | struct nfs4_getattr_arg args = { | |
3370 | .fh = fhandle, | |
3371 | .bitmask = server->attr_bitmask, | |
3372 | }; | |
3373 | struct nfs4_getattr_res res = { | |
3374 | .fattr = fattr, | |
1775fd3e | 3375 | .label = label, |
1da177e4 LT |
3376 | .server = server, |
3377 | }; | |
3378 | struct rpc_message msg = { | |
3379 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3380 | .rpc_argp = &args, | |
3381 | .rpc_resp = &res, | |
3382 | }; | |
aa9c2669 DQ |
3383 | |
3384 | args.bitmask = nfs4_bitmask(server, label); | |
3385 | ||
0e574af1 | 3386 | nfs_fattr_init(fattr); |
7c513058 | 3387 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3388 | } |
3389 | ||
1775fd3e DQ |
3390 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3391 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3392 | { |
3393 | struct nfs4_exception exception = { }; | |
3394 | int err; | |
3395 | do { | |
b5f875a9 TM |
3396 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3397 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3398 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3399 | &exception); |
3400 | } while (exception.retry); | |
3401 | return err; | |
3402 | } | |
3403 | ||
3404 | /* | |
3405 | * The file is not closed if it is opened due to the a request to change | |
3406 | * the size of the file. The open call will not be needed once the | |
3407 | * VFS layer lookup-intents are implemented. | |
3408 | * | |
3409 | * Close is called when the inode is destroyed. | |
3410 | * If we haven't opened the file for O_WRONLY, we | |
3411 | * need to in the size_change case to obtain a stateid. | |
3412 | * | |
3413 | * Got race? | |
3414 | * Because OPEN is always done by name in nfsv4, it is | |
3415 | * possible that we opened a different file by the same | |
3416 | * name. We can recognize this race condition, but we | |
3417 | * can't do anything about it besides returning an error. | |
3418 | * | |
3419 | * This will be fixed with VFS changes (lookup-intent). | |
3420 | */ | |
3421 | static int | |
3422 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3423 | struct iattr *sattr) | |
3424 | { | |
2b0143b5 | 3425 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3426 | struct rpc_cred *cred = NULL; |
d530838b | 3427 | struct nfs4_state *state = NULL; |
14c43f76 | 3428 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3429 | int status; |
3430 | ||
88ac815c PT |
3431 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3432 | sattr->ia_valid & ATTR_SIZE && | |
3433 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3434 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3435 | |
0e574af1 | 3436 | nfs_fattr_init(fattr); |
1da177e4 | 3437 | |
2669940d AA |
3438 | /* Deal with open(O_TRUNC) */ |
3439 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3440 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3441 | |
3442 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3443 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3444 | return 0; |
3445 | ||
d530838b | 3446 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3447 | if (sattr->ia_valid & ATTR_FILE) { |
3448 | struct nfs_open_context *ctx; | |
3449 | ||
3450 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3451 | if (ctx) { |
3452 | cred = ctx->cred; | |
3453 | state = ctx->state; | |
3454 | } | |
659bfcd6 | 3455 | } |
08e9eac4 | 3456 | |
14c43f76 DQ |
3457 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3458 | if (IS_ERR(label)) | |
3459 | return PTR_ERR(label); | |
3460 | ||
3461 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3462 | if (status == 0) { |
f044636d | 3463 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3464 | nfs_setsecurity(inode, fattr, label); |
3465 | } | |
14c43f76 | 3466 | nfs4_label_free(label); |
1da177e4 LT |
3467 | return status; |
3468 | } | |
3469 | ||
0c2e53f1 TM |
3470 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3471 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3472 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3473 | { |
0c2e53f1 | 3474 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3475 | int status; |
3476 | struct nfs4_lookup_arg args = { | |
3477 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3478 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3479 | .name = name, |
3480 | }; | |
3481 | struct nfs4_lookup_res res = { | |
3482 | .server = server, | |
3483 | .fattr = fattr, | |
aa9c2669 | 3484 | .label = label, |
2b3de441 DH |
3485 | .fh = fhandle, |
3486 | }; | |
3487 | struct rpc_message msg = { | |
3488 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3489 | .rpc_argp = &args, | |
3490 | .rpc_resp = &res, | |
3491 | }; | |
3492 | ||
aa9c2669 DQ |
3493 | args.bitmask = nfs4_bitmask(server, label); |
3494 | ||
2b3de441 DH |
3495 | nfs_fattr_init(fattr); |
3496 | ||
1da177e4 | 3497 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3498 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3499 | dprintk("NFS reply lookup: %d\n", status); |
3500 | return status; | |
3501 | } | |
3502 | ||
72de53ec | 3503 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3504 | { |
7ebb9315 | 3505 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3506 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3507 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3508 | fattr->nlink = 2; | |
3509 | } | |
3510 | ||
72de53ec BS |
3511 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3512 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3513 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3514 | { |
3515 | struct nfs4_exception exception = { }; | |
72de53ec | 3516 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3517 | int err; |
3518 | do { | |
1775fd3e | 3519 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3520 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3521 | switch (err) { |
08ef7bd3 | 3522 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3523 | err = -ENOENT; |
3524 | goto out; | |
0c2e53f1 | 3525 | case -NFS4ERR_MOVED: |
f05d147f | 3526 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3527 | if (err == -NFS4ERR_MOVED) |
3528 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3529 | goto out; |
0c2e53f1 | 3530 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3531 | err = -EPERM; |
3532 | if (client != *clnt) | |
3533 | goto out; | |
66b06860 | 3534 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3535 | if (IS_ERR(client)) |
3536 | return PTR_ERR(client); | |
3537 | ||
3538 | exception.retry = 1; | |
3539 | break; | |
3540 | default: | |
3541 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3542 | } |
1da177e4 | 3543 | } while (exception.retry); |
72de53ec BS |
3544 | |
3545 | out: | |
3546 | if (err == 0) | |
3547 | *clnt = client; | |
3548 | else if (client != *clnt) | |
3549 | rpc_shutdown_client(client); | |
3550 | ||
1da177e4 LT |
3551 | return err; |
3552 | } | |
3553 | ||
80a16b21 | 3554 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3555 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3556 | struct nfs4_label *label) | |
72de53ec BS |
3557 | { |
3558 | int status; | |
3559 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3560 | ||
1775fd3e | 3561 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3562 | if (client != NFS_CLIENT(dir)) { |
3563 | rpc_shutdown_client(client); | |
3564 | nfs_fixup_secinfo_attributes(fattr); | |
3565 | } | |
3566 | return status; | |
3567 | } | |
3568 | ||
f05d147f BS |
3569 | struct rpc_clnt * |
3570 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3571 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3572 | { | |
b72888cb | 3573 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3574 | int status; |
f05d147f | 3575 | |
1775fd3e | 3576 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3577 | if (status < 0) |
f05d147f | 3578 | return ERR_PTR(status); |
b72888cb | 3579 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3580 | } |
3581 | ||
1da177e4 LT |
3582 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3583 | { | |
76b32999 | 3584 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3585 | struct nfs4_accessargs args = { |
3586 | .fh = NFS_FH(inode), | |
a4980e78 | 3587 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3588 | }; |
3589 | struct nfs4_accessres res = { | |
3590 | .server = server, | |
1da177e4 | 3591 | }; |
1da177e4 LT |
3592 | struct rpc_message msg = { |
3593 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3594 | .rpc_argp = &args, | |
3595 | .rpc_resp = &res, | |
3596 | .rpc_cred = entry->cred, | |
3597 | }; | |
3598 | int mode = entry->mask; | |
aa9c2669 | 3599 | int status = 0; |
1da177e4 LT |
3600 | |
3601 | /* | |
3602 | * Determine which access bits we want to ask for... | |
3603 | */ | |
3604 | if (mode & MAY_READ) | |
3605 | args.access |= NFS4_ACCESS_READ; | |
3606 | if (S_ISDIR(inode->i_mode)) { | |
3607 | if (mode & MAY_WRITE) | |
3608 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3609 | if (mode & MAY_EXEC) | |
3610 | args.access |= NFS4_ACCESS_LOOKUP; | |
3611 | } else { | |
3612 | if (mode & MAY_WRITE) | |
3613 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3614 | if (mode & MAY_EXEC) | |
3615 | args.access |= NFS4_ACCESS_EXECUTE; | |
3616 | } | |
c407d41a TM |
3617 | |
3618 | res.fattr = nfs_alloc_fattr(); | |
3619 | if (res.fattr == NULL) | |
3620 | return -ENOMEM; | |
3621 | ||
7c513058 | 3622 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3623 | if (!status) { |
6168f62c | 3624 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3625 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3626 | } |
c407d41a | 3627 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3628 | return status; |
3629 | } | |
3630 | ||
3631 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3632 | { | |
3633 | struct nfs4_exception exception = { }; | |
3634 | int err; | |
3635 | do { | |
c1578b76 TM |
3636 | err = _nfs4_proc_access(inode, entry); |
3637 | trace_nfs4_access(inode, err); | |
3638 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3639 | &exception); |
3640 | } while (exception.retry); | |
3641 | return err; | |
3642 | } | |
3643 | ||
3644 | /* | |
3645 | * TODO: For the time being, we don't try to get any attributes | |
3646 | * along with any of the zero-copy operations READ, READDIR, | |
3647 | * READLINK, WRITE. | |
3648 | * | |
3649 | * In the case of the first three, we want to put the GETATTR | |
3650 | * after the read-type operation -- this is because it is hard | |
3651 | * to predict the length of a GETATTR response in v4, and thus | |
3652 | * align the READ data correctly. This means that the GETATTR | |
3653 | * may end up partially falling into the page cache, and we should | |
3654 | * shift it into the 'tail' of the xdr_buf before processing. | |
3655 | * To do this efficiently, we need to know the total length | |
3656 | * of data received, which doesn't seem to be available outside | |
3657 | * of the RPC layer. | |
3658 | * | |
3659 | * In the case of WRITE, we also want to put the GETATTR after | |
3660 | * the operation -- in this case because we want to make sure | |
140150db | 3661 | * we get the post-operation mtime and size. |
1da177e4 LT |
3662 | * |
3663 | * Both of these changes to the XDR layer would in fact be quite | |
3664 | * minor, but I decided to leave them for a subsequent patch. | |
3665 | */ | |
3666 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3667 | unsigned int pgbase, unsigned int pglen) | |
3668 | { | |
3669 | struct nfs4_readlink args = { | |
3670 | .fh = NFS_FH(inode), | |
3671 | .pgbase = pgbase, | |
3672 | .pglen = pglen, | |
3673 | .pages = &page, | |
3674 | }; | |
f50c7000 | 3675 | struct nfs4_readlink_res res; |
1da177e4 LT |
3676 | struct rpc_message msg = { |
3677 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3678 | .rpc_argp = &args, | |
f50c7000 | 3679 | .rpc_resp = &res, |
1da177e4 LT |
3680 | }; |
3681 | ||
7c513058 | 3682 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3683 | } |
3684 | ||
3685 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3686 | unsigned int pgbase, unsigned int pglen) | |
3687 | { | |
3688 | struct nfs4_exception exception = { }; | |
3689 | int err; | |
3690 | do { | |
c1578b76 TM |
3691 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3692 | trace_nfs4_readlink(inode, err); | |
3693 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3694 | &exception); |
3695 | } while (exception.retry); | |
3696 | return err; | |
3697 | } | |
3698 | ||
1da177e4 | 3699 | /* |
8867fe58 | 3700 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3701 | */ |
1da177e4 LT |
3702 | static int |
3703 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3704 | int flags) |
1da177e4 | 3705 | { |
aa9c2669 | 3706 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3707 | struct nfs_open_context *ctx; |
1da177e4 | 3708 | struct nfs4_state *state; |
1da177e4 LT |
3709 | int status = 0; |
3710 | ||
8867fe58 MS |
3711 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3712 | if (IS_ERR(ctx)) | |
3713 | return PTR_ERR(ctx); | |
3714 | ||
aa9c2669 DQ |
3715 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3716 | ||
a8a5da99 | 3717 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3718 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3719 | if (IS_ERR(state)) { |
3720 | status = PTR_ERR(state); | |
c0204fd2 | 3721 | goto out; |
1da177e4 | 3722 | } |
1da177e4 | 3723 | out: |
aa9c2669 | 3724 | nfs4_label_release_security(ilabel); |
8867fe58 | 3725 | put_nfs_open_context(ctx); |
1da177e4 LT |
3726 | return status; |
3727 | } | |
3728 | ||
3729 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3730 | { | |
16e42959 | 3731 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3732 | struct nfs_removeargs args = { |
1da177e4 | 3733 | .fh = NFS_FH(dir), |
26fe5750 | 3734 | .name = *name, |
16e42959 | 3735 | }; |
4fdc17b2 | 3736 | struct nfs_removeres res = { |
16e42959 | 3737 | .server = server, |
1da177e4 | 3738 | }; |
1da177e4 | 3739 | struct rpc_message msg = { |
4fdc17b2 TM |
3740 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3741 | .rpc_argp = &args, | |
3742 | .rpc_resp = &res, | |
1da177e4 | 3743 | }; |
778d2817 | 3744 | int status; |
1da177e4 | 3745 | |
7c513058 | 3746 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3747 | if (status == 0) |
16e42959 | 3748 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3749 | return status; |
3750 | } | |
3751 | ||
3752 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3753 | { | |
3754 | struct nfs4_exception exception = { }; | |
3755 | int err; | |
3756 | do { | |
078ea3df TM |
3757 | err = _nfs4_proc_remove(dir, name); |
3758 | trace_nfs4_remove(dir, name, err); | |
3759 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3760 | &exception); |
3761 | } while (exception.retry); | |
3762 | return err; | |
3763 | } | |
3764 | ||
e4eff1a6 | 3765 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3766 | { |
e4eff1a6 TM |
3767 | struct nfs_server *server = NFS_SERVER(dir); |
3768 | struct nfs_removeargs *args = msg->rpc_argp; | |
3769 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3770 | |
e4eff1a6 | 3771 | res->server = server; |
1da177e4 | 3772 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3773 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3774 | |
3775 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3776 | } |
3777 | ||
34e137cc BS |
3778 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3779 | { | |
d9afbd1b TM |
3780 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3781 | &data->args.seq_args, | |
3782 | &data->res.seq_res, | |
3783 | task); | |
1da177e4 LT |
3784 | } |
3785 | ||
e4eff1a6 | 3786 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3787 | { |
078ea3df TM |
3788 | struct nfs_unlinkdata *data = task->tk_calldata; |
3789 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3790 | |
14516c3a TM |
3791 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3792 | return 0; | |
8478eaa1 N |
3793 | if (nfs4_async_handle_error(task, res->server, NULL, |
3794 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3795 | return 0; |
3796 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3797 | return 1; |
1da177e4 LT |
3798 | } |
3799 | ||
d3d4152a JL |
3800 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3801 | { | |
3802 | struct nfs_server *server = NFS_SERVER(dir); | |
3803 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3804 | struct nfs_renameres *res = msg->rpc_resp; | |
3805 | ||
3806 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3807 | res->server = server; |
a9c92d6b | 3808 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3809 | } |
3810 | ||
c6bfa1a1 BS |
3811 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3812 | { | |
d9afbd1b TM |
3813 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3814 | &data->args.seq_args, | |
3815 | &data->res.seq_res, | |
3816 | task); | |
d3d4152a JL |
3817 | } |
3818 | ||
3819 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3820 | struct inode *new_dir) | |
3821 | { | |
fbc6f7c2 TM |
3822 | struct nfs_renamedata *data = task->tk_calldata; |
3823 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3824 | |
3825 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3826 | return 0; | |
8478eaa1 | 3827 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3828 | return 0; |
3829 | ||
3830 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3831 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3832 | return 1; |
3833 | } | |
3834 | ||
1da177e4 LT |
3835 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3836 | { | |
91ba2eee | 3837 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3838 | struct nfs4_link_arg arg = { |
3839 | .fh = NFS_FH(inode), | |
3840 | .dir_fh = NFS_FH(dir), | |
3841 | .name = name, | |
91ba2eee TM |
3842 | .bitmask = server->attr_bitmask, |
3843 | }; | |
91ba2eee TM |
3844 | struct nfs4_link_res res = { |
3845 | .server = server, | |
1775fd3e | 3846 | .label = NULL, |
1da177e4 | 3847 | }; |
1da177e4 LT |
3848 | struct rpc_message msg = { |
3849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3850 | .rpc_argp = &arg, | |
91ba2eee | 3851 | .rpc_resp = &res, |
1da177e4 | 3852 | }; |
136f2627 TM |
3853 | int status = -ENOMEM; |
3854 | ||
3855 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3856 | if (res.fattr == NULL) |
136f2627 | 3857 | goto out; |
1da177e4 | 3858 | |
14c43f76 DQ |
3859 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3860 | if (IS_ERR(res.label)) { | |
3861 | status = PTR_ERR(res.label); | |
3862 | goto out; | |
3863 | } | |
aa9c2669 | 3864 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3865 | |
7c513058 | 3866 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3867 | if (!status) { |
3868 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3869 | status = nfs_post_op_update_inode(inode, res.fattr); |
3870 | if (!status) | |
3871 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3872 | } |
14c43f76 DQ |
3873 | |
3874 | ||
3875 | nfs4_label_free(res.label); | |
3876 | ||
136f2627 | 3877 | out: |
136f2627 | 3878 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3879 | return status; |
3880 | } | |
3881 | ||
3882 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3883 | { | |
3884 | struct nfs4_exception exception = { }; | |
3885 | int err; | |
3886 | do { | |
3887 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3888 | _nfs4_proc_link(inode, dir, name), | |
3889 | &exception); | |
3890 | } while (exception.retry); | |
3891 | return err; | |
3892 | } | |
3893 | ||
57dc9a57 TM |
3894 | struct nfs4_createdata { |
3895 | struct rpc_message msg; | |
3896 | struct nfs4_create_arg arg; | |
3897 | struct nfs4_create_res res; | |
3898 | struct nfs_fh fh; | |
3899 | struct nfs_fattr fattr; | |
1775fd3e | 3900 | struct nfs4_label *label; |
57dc9a57 TM |
3901 | }; |
3902 | ||
3903 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3904 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3905 | { | |
3906 | struct nfs4_createdata *data; | |
3907 | ||
3908 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3909 | if (data != NULL) { | |
3910 | struct nfs_server *server = NFS_SERVER(dir); | |
3911 | ||
14c43f76 DQ |
3912 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3913 | if (IS_ERR(data->label)) | |
3914 | goto out_free; | |
3915 | ||
57dc9a57 TM |
3916 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3917 | data->msg.rpc_argp = &data->arg; | |
3918 | data->msg.rpc_resp = &data->res; | |
3919 | data->arg.dir_fh = NFS_FH(dir); | |
3920 | data->arg.server = server; | |
3921 | data->arg.name = name; | |
3922 | data->arg.attrs = sattr; | |
3923 | data->arg.ftype = ftype; | |
aa9c2669 | 3924 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3925 | data->res.server = server; |
3926 | data->res.fh = &data->fh; | |
3927 | data->res.fattr = &data->fattr; | |
1775fd3e | 3928 | data->res.label = data->label; |
57dc9a57 | 3929 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3930 | } |
3931 | return data; | |
14c43f76 DQ |
3932 | out_free: |
3933 | kfree(data); | |
3934 | return NULL; | |
57dc9a57 TM |
3935 | } |
3936 | ||
3937 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3938 | { | |
7c513058 | 3939 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3940 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3941 | if (status == 0) { |
3942 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3943 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3944 | } |
3945 | return status; | |
3946 | } | |
3947 | ||
3948 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3949 | { | |
14c43f76 | 3950 | nfs4_label_free(data->label); |
57dc9a57 TM |
3951 | kfree(data); |
3952 | } | |
3953 | ||
4f390c15 | 3954 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3955 | struct page *page, unsigned int len, struct iattr *sattr, |
3956 | struct nfs4_label *label) | |
1da177e4 | 3957 | { |
57dc9a57 TM |
3958 | struct nfs4_createdata *data; |
3959 | int status = -ENAMETOOLONG; | |
1da177e4 | 3960 | |
94a6d753 | 3961 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3962 | goto out; |
4f390c15 | 3963 | |
57dc9a57 TM |
3964 | status = -ENOMEM; |
3965 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3966 | if (data == NULL) | |
3967 | goto out; | |
3968 | ||
3969 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3970 | data->arg.u.symlink.pages = &page; | |
3971 | data->arg.u.symlink.len = len; | |
1775fd3e | 3972 | data->arg.label = label; |
1da177e4 | 3973 | |
57dc9a57 TM |
3974 | status = nfs4_do_create(dir, dentry, data); |
3975 | ||
3976 | nfs4_free_createdata(data); | |
3977 | out: | |
1da177e4 LT |
3978 | return status; |
3979 | } | |
3980 | ||
4f390c15 | 3981 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3982 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3983 | { |
3984 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3985 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3986 | int err; |
aa9c2669 DQ |
3987 | |
3988 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3989 | ||
1da177e4 | 3990 | do { |
078ea3df TM |
3991 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3992 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3993 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3994 | &exception); |
3995 | } while (exception.retry); | |
aa9c2669 DQ |
3996 | |
3997 | nfs4_label_release_security(label); | |
1da177e4 LT |
3998 | return err; |
3999 | } | |
4000 | ||
4001 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 4002 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 4003 | { |
57dc9a57 TM |
4004 | struct nfs4_createdata *data; |
4005 | int status = -ENOMEM; | |
1da177e4 | 4006 | |
57dc9a57 TM |
4007 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
4008 | if (data == NULL) | |
4009 | goto out; | |
4010 | ||
1775fd3e | 4011 | data->arg.label = label; |
57dc9a57 TM |
4012 | status = nfs4_do_create(dir, dentry, data); |
4013 | ||
4014 | nfs4_free_createdata(data); | |
4015 | out: | |
1da177e4 LT |
4016 | return status; |
4017 | } | |
4018 | ||
4019 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
4020 | struct iattr *sattr) | |
4021 | { | |
4022 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4023 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4024 | int err; |
a8a5da99 | 4025 | |
aa9c2669 DQ |
4026 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4027 | ||
a8a5da99 | 4028 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4029 | do { |
078ea3df TM |
4030 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
4031 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
4032 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4033 | &exception); |
4034 | } while (exception.retry); | |
aa9c2669 DQ |
4035 | nfs4_label_release_security(label); |
4036 | ||
1da177e4 LT |
4037 | return err; |
4038 | } | |
4039 | ||
4040 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4041 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 4042 | { |
2b0143b5 | 4043 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
4044 | struct nfs4_readdir_arg args = { |
4045 | .fh = NFS_FH(dir), | |
56e4ebf8 | 4046 | .pages = pages, |
1da177e4 LT |
4047 | .pgbase = 0, |
4048 | .count = count, | |
2b0143b5 | 4049 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 4050 | .plus = plus, |
1da177e4 LT |
4051 | }; |
4052 | struct nfs4_readdir_res res; | |
4053 | struct rpc_message msg = { | |
4054 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
4055 | .rpc_argp = &args, | |
4056 | .rpc_resp = &res, | |
4057 | .rpc_cred = cred, | |
4058 | }; | |
4059 | int status; | |
4060 | ||
6de1472f AV |
4061 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
4062 | dentry, | |
eadf4598 | 4063 | (unsigned long long)cookie); |
c3f52af3 | 4064 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 4065 | res.pgbase = args.pgbase; |
7c513058 | 4066 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 4067 | if (status >= 0) { |
c3f52af3 | 4068 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
4069 | status += args.pgbase; |
4070 | } | |
c4812998 TM |
4071 | |
4072 | nfs_invalidate_atime(dir); | |
4073 | ||
3110ff80 | 4074 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
4075 | return status; |
4076 | } | |
4077 | ||
4078 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4079 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
4080 | { |
4081 | struct nfs4_exception exception = { }; | |
4082 | int err; | |
4083 | do { | |
c1578b76 TM |
4084 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
4085 | pages, count, plus); | |
2b0143b5 DH |
4086 | trace_nfs4_readdir(d_inode(dentry), err); |
4087 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
4088 | &exception); |
4089 | } while (exception.retry); | |
4090 | return err; | |
4091 | } | |
4092 | ||
4093 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 4094 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 4095 | { |
57dc9a57 TM |
4096 | struct nfs4_createdata *data; |
4097 | int mode = sattr->ia_mode; | |
4098 | int status = -ENOMEM; | |
1da177e4 | 4099 | |
57dc9a57 TM |
4100 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
4101 | if (data == NULL) | |
4102 | goto out; | |
4103 | ||
1da177e4 | 4104 | if (S_ISFIFO(mode)) |
57dc9a57 | 4105 | data->arg.ftype = NF4FIFO; |
1da177e4 | 4106 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
4107 | data->arg.ftype = NF4BLK; |
4108 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4109 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
4110 | } |
4111 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
4112 | data->arg.ftype = NF4CHR; |
4113 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4114 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
4115 | } else if (!S_ISSOCK(mode)) { |
4116 | status = -EINVAL; | |
4117 | goto out_free; | |
1da177e4 | 4118 | } |
1775fd3e | 4119 | |
aa9c2669 | 4120 | data->arg.label = label; |
57dc9a57 | 4121 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4122 | out_free: |
57dc9a57 TM |
4123 | nfs4_free_createdata(data); |
4124 | out: | |
1da177e4 LT |
4125 | return status; |
4126 | } | |
4127 | ||
4128 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4129 | struct iattr *sattr, dev_t rdev) | |
4130 | { | |
4131 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4132 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4133 | int err; |
a8a5da99 | 4134 | |
aa9c2669 DQ |
4135 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4136 | ||
a8a5da99 | 4137 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4138 | do { |
078ea3df TM |
4139 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4140 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4141 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4142 | &exception); |
4143 | } while (exception.retry); | |
aa9c2669 DQ |
4144 | |
4145 | nfs4_label_release_security(label); | |
4146 | ||
1da177e4 LT |
4147 | return err; |
4148 | } | |
4149 | ||
4150 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4151 | struct nfs_fsstat *fsstat) | |
4152 | { | |
4153 | struct nfs4_statfs_arg args = { | |
4154 | .fh = fhandle, | |
4155 | .bitmask = server->attr_bitmask, | |
4156 | }; | |
24ad148a BH |
4157 | struct nfs4_statfs_res res = { |
4158 | .fsstat = fsstat, | |
4159 | }; | |
1da177e4 LT |
4160 | struct rpc_message msg = { |
4161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4162 | .rpc_argp = &args, | |
24ad148a | 4163 | .rpc_resp = &res, |
1da177e4 LT |
4164 | }; |
4165 | ||
0e574af1 | 4166 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4167 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4168 | } |
4169 | ||
4170 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4171 | { | |
4172 | struct nfs4_exception exception = { }; | |
4173 | int err; | |
4174 | do { | |
4175 | err = nfs4_handle_exception(server, | |
4176 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4177 | &exception); | |
4178 | } while (exception.retry); | |
4179 | return err; | |
4180 | } | |
4181 | ||
4182 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4183 | struct nfs_fsinfo *fsinfo) | |
4184 | { | |
4185 | struct nfs4_fsinfo_arg args = { | |
4186 | .fh = fhandle, | |
4187 | .bitmask = server->attr_bitmask, | |
4188 | }; | |
3dda5e43 BH |
4189 | struct nfs4_fsinfo_res res = { |
4190 | .fsinfo = fsinfo, | |
4191 | }; | |
1da177e4 LT |
4192 | struct rpc_message msg = { |
4193 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4194 | .rpc_argp = &args, | |
3dda5e43 | 4195 | .rpc_resp = &res, |
1da177e4 LT |
4196 | }; |
4197 | ||
7c513058 | 4198 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4199 | } |
4200 | ||
4201 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4202 | { | |
4203 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4204 | unsigned long now = jiffies; |
1da177e4 LT |
4205 | int err; |
4206 | ||
4207 | do { | |
83ca7f5a | 4208 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4209 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4210 | if (err == 0) { |
4211 | struct nfs_client *clp = server->nfs_client; | |
4212 | ||
4213 | spin_lock(&clp->cl_lock); | |
4214 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4215 | clp->cl_last_renewal = now; | |
4216 | spin_unlock(&clp->cl_lock); | |
4217 | break; | |
4218 | } | |
4219 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4220 | } while (exception.retry); |
4221 | return err; | |
4222 | } | |
4223 | ||
4224 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4225 | { | |
e38eb650 BS |
4226 | int error; |
4227 | ||
0e574af1 | 4228 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4229 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4230 | if (error == 0) { |
4231 | /* block layout checks this! */ | |
4232 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4233 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4234 | } |
e38eb650 BS |
4235 | |
4236 | return error; | |
1da177e4 LT |
4237 | } |
4238 | ||
4239 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4240 | struct nfs_pathconf *pathconf) | |
4241 | { | |
4242 | struct nfs4_pathconf_arg args = { | |
4243 | .fh = fhandle, | |
4244 | .bitmask = server->attr_bitmask, | |
4245 | }; | |
d45b2989 BH |
4246 | struct nfs4_pathconf_res res = { |
4247 | .pathconf = pathconf, | |
4248 | }; | |
1da177e4 LT |
4249 | struct rpc_message msg = { |
4250 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4251 | .rpc_argp = &args, | |
d45b2989 | 4252 | .rpc_resp = &res, |
1da177e4 LT |
4253 | }; |
4254 | ||
4255 | /* None of the pathconf attributes are mandatory to implement */ | |
4256 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4257 | memset(pathconf, 0, sizeof(*pathconf)); | |
4258 | return 0; | |
4259 | } | |
4260 | ||
0e574af1 | 4261 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4262 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4263 | } |
4264 | ||
4265 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4266 | struct nfs_pathconf *pathconf) | |
4267 | { | |
4268 | struct nfs4_exception exception = { }; | |
4269 | int err; | |
4270 | ||
4271 | do { | |
4272 | err = nfs4_handle_exception(server, | |
4273 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4274 | &exception); | |
4275 | } while (exception.retry); | |
4276 | return err; | |
4277 | } | |
4278 | ||
5521abfd | 4279 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4280 | const struct nfs_open_context *ctx, |
4281 | const struct nfs_lock_context *l_ctx, | |
4282 | fmode_t fmode) | |
4283 | { | |
4284 | const struct nfs_lockowner *lockowner = NULL; | |
4285 | ||
4286 | if (l_ctx != NULL) | |
4287 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4288 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4289 | } |
4290 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4291 | ||
5521abfd TM |
4292 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4293 | const struct nfs_open_context *ctx, | |
4294 | const struct nfs_lock_context *l_ctx, | |
4295 | fmode_t fmode) | |
4296 | { | |
4297 | nfs4_stateid current_stateid; | |
4298 | ||
e1253be0 TM |
4299 | /* If the current stateid represents a lost lock, then exit */ |
4300 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4301 | return true; | |
5521abfd TM |
4302 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4303 | } | |
4304 | ||
4305 | static bool nfs4_error_stateid_expired(int err) | |
4306 | { | |
4307 | switch (err) { | |
4308 | case -NFS4ERR_DELEG_REVOKED: | |
4309 | case -NFS4ERR_ADMIN_REVOKED: | |
4310 | case -NFS4ERR_BAD_STATEID: | |
4311 | case -NFS4ERR_STALE_STATEID: | |
4312 | case -NFS4ERR_OLD_STATEID: | |
4313 | case -NFS4ERR_OPENMODE: | |
4314 | case -NFS4ERR_EXPIRED: | |
4315 | return true; | |
4316 | } | |
4317 | return false; | |
4318 | } | |
4319 | ||
d45f60c6 | 4320 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4321 | { |
d45f60c6 | 4322 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4323 | } |
4324 | ||
d45f60c6 | 4325 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4326 | { |
d45f60c6 | 4327 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4328 | |
d45f60c6 WAA |
4329 | trace_nfs4_read(hdr, task->tk_status); |
4330 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4331 | hdr->args.context->state, |
4332 | NULL) == -EAGAIN) { | |
d00c5d43 | 4333 | rpc_restart_call_prepare(task); |
ec06c096 | 4334 | return -EAGAIN; |
1da177e4 | 4335 | } |
8850df99 | 4336 | |
d45f60c6 | 4337 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4338 | if (task->tk_status > 0) |
d45f60c6 | 4339 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4340 | return 0; |
1da177e4 LT |
4341 | } |
4342 | ||
5521abfd | 4343 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4344 | struct nfs_pgio_args *args) |
5521abfd TM |
4345 | { |
4346 | ||
4347 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4348 | nfs4_stateid_is_current(&args->stateid, | |
4349 | args->context, | |
4350 | args->lock_context, | |
4351 | FMODE_READ)) | |
4352 | return false; | |
4353 | rpc_restart_call_prepare(task); | |
4354 | return true; | |
4355 | } | |
4356 | ||
d45f60c6 | 4357 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4358 | { |
4359 | ||
4360 | dprintk("--> %s\n", __func__); | |
4361 | ||
d45f60c6 | 4362 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4363 | return -EAGAIN; |
d45f60c6 | 4364 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4365 | return -EAGAIN; |
d45f60c6 WAA |
4366 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4367 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4368 | } |
4369 | ||
d45f60c6 WAA |
4370 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4371 | struct rpc_message *msg) | |
1da177e4 | 4372 | { |
d45f60c6 WAA |
4373 | hdr->timestamp = jiffies; |
4374 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4375 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4376 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4377 | } |
4378 | ||
d45f60c6 WAA |
4379 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4380 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4381 | { |
d45f60c6 WAA |
4382 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4383 | &hdr->args.seq_args, | |
4384 | &hdr->res.seq_res, | |
9b206149 | 4385 | task)) |
ef1820f9 | 4386 | return 0; |
d45f60c6 WAA |
4387 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4388 | hdr->args.lock_context, | |
4389 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4390 | return -EIO; |
d45f60c6 | 4391 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4392 | return -EIO; |
4393 | return 0; | |
1da177e4 LT |
4394 | } |
4395 | ||
d45f60c6 WAA |
4396 | static int nfs4_write_done_cb(struct rpc_task *task, |
4397 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4398 | { |
d45f60c6 | 4399 | struct inode *inode = hdr->inode; |
8478eaa1 | 4400 | |
d45f60c6 WAA |
4401 | trace_nfs4_write(hdr, task->tk_status); |
4402 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4403 | hdr->args.context->state, |
4404 | NULL) == -EAGAIN) { | |
d00c5d43 | 4405 | rpc_restart_call_prepare(task); |
788e7a89 | 4406 | return -EAGAIN; |
1da177e4 | 4407 | } |
4f9838c7 | 4408 | if (task->tk_status >= 0) { |
d45f60c6 | 4409 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4410 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4411 | } |
788e7a89 | 4412 | return 0; |
1da177e4 LT |
4413 | } |
4414 | ||
5521abfd | 4415 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4416 | struct nfs_pgio_args *args) |
5521abfd TM |
4417 | { |
4418 | ||
4419 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4420 | nfs4_stateid_is_current(&args->stateid, | |
4421 | args->context, | |
4422 | args->lock_context, | |
4423 | FMODE_WRITE)) | |
4424 | return false; | |
4425 | rpc_restart_call_prepare(task); | |
4426 | return true; | |
4427 | } | |
4428 | ||
d45f60c6 | 4429 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4430 | { |
d45f60c6 | 4431 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4432 | return -EAGAIN; |
d45f60c6 | 4433 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4434 | return -EAGAIN; |
d45f60c6 WAA |
4435 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4436 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4437 | } |
4438 | ||
5a37f851 | 4439 | static |
d45f60c6 | 4440 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4441 | { |
5a37f851 | 4442 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4443 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4444 | return false; |
4445 | /* Otherwise, request attributes if and only if we don't hold | |
4446 | * a delegation | |
4447 | */ | |
011e2a7f | 4448 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4449 | } |
a69aef14 | 4450 | |
d45f60c6 WAA |
4451 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4452 | struct rpc_message *msg) | |
1da177e4 | 4453 | { |
d45f60c6 | 4454 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4455 | |
d45f60c6 WAA |
4456 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4457 | hdr->args.bitmask = NULL; | |
4458 | hdr->res.fattr = NULL; | |
7ffd1064 | 4459 | } else |
d45f60c6 | 4460 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4461 | |
d45f60c6 WAA |
4462 | if (!hdr->pgio_done_cb) |
4463 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4464 | hdr->res.server = server; | |
4465 | hdr->timestamp = jiffies; | |
1da177e4 | 4466 | |
bdc7f021 | 4467 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4468 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4469 | } |
4470 | ||
0b7c0153 | 4471 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4472 | { |
d9afbd1b TM |
4473 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4474 | &data->args.seq_args, | |
4475 | &data->res.seq_res, | |
4476 | task); | |
1da177e4 LT |
4477 | } |
4478 | ||
0b7c0153 | 4479 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4480 | { |
1da177e4 | 4481 | struct inode *inode = data->inode; |
14516c3a | 4482 | |
cc668ab3 | 4483 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4484 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4485 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4486 | rpc_restart_call_prepare(task); |
788e7a89 | 4487 | return -EAGAIN; |
1da177e4 | 4488 | } |
788e7a89 | 4489 | return 0; |
1da177e4 LT |
4490 | } |
4491 | ||
0b7c0153 | 4492 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4493 | { |
4494 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4495 | return -EAGAIN; | |
0b7c0153 | 4496 | return data->commit_done_cb(task, data); |
5f452431 FI |
4497 | } |
4498 | ||
0b7c0153 | 4499 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4500 | { |
788e7a89 | 4501 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4502 | |
0b7c0153 FI |
4503 | if (data->commit_done_cb == NULL) |
4504 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4505 | data->res.server = server; |
bdc7f021 | 4506 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4507 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4508 | } |
4509 | ||
9bc4e3ca CL |
4510 | struct nfs4_renewdata { |
4511 | struct nfs_client *client; | |
4512 | unsigned long timestamp; | |
4513 | }; | |
4514 | ||
1da177e4 LT |
4515 | /* |
4516 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4517 | * standalone procedure for queueing an asynchronous RENEW. | |
4518 | */ | |
9bc4e3ca | 4519 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4520 | { |
9bc4e3ca CL |
4521 | struct nfs4_renewdata *data = calldata; |
4522 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4523 | |
0851de06 AB |
4524 | if (atomic_read(&clp->cl_count) > 1) |
4525 | nfs4_schedule_state_renewal(clp); | |
4526 | nfs_put_client(clp); | |
9bc4e3ca | 4527 | kfree(data); |
dc96aef9 AB |
4528 | } |
4529 | ||
9bc4e3ca | 4530 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4531 | { |
9bc4e3ca CL |
4532 | struct nfs4_renewdata *data = calldata; |
4533 | struct nfs_client *clp = data->client; | |
4534 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4535 | |
c6d01c6f | 4536 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4537 | switch (task->tk_status) { |
4538 | case 0: | |
4539 | break; | |
4540 | case -NFS4ERR_LEASE_MOVED: | |
4541 | nfs4_schedule_lease_moved_recovery(clp); | |
4542 | break; | |
4543 | default: | |
95baa25c | 4544 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4545 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4546 | return; | |
4547 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4548 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4549 | return; |
4550 | } | |
4551 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4552 | } |
452e9352 | 4553 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4554 | } |
4555 | ||
963d8fe5 TM |
4556 | static const struct rpc_call_ops nfs4_renew_ops = { |
4557 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4558 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4559 | }; |
4560 | ||
2f60ea6b | 4561 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4562 | { |
4563 | struct rpc_message msg = { | |
4564 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4565 | .rpc_argp = clp, | |
b4454fe1 | 4566 | .rpc_cred = cred, |
1da177e4 | 4567 | }; |
9bc4e3ca | 4568 | struct nfs4_renewdata *data; |
1da177e4 | 4569 | |
2f60ea6b TM |
4570 | if (renew_flags == 0) |
4571 | return 0; | |
0851de06 AB |
4572 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4573 | return -EIO; | |
b569ad34 | 4574 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4575 | if (data == NULL) |
4576 | return -ENOMEM; | |
4577 | data->client = clp; | |
4578 | data->timestamp = jiffies; | |
bc7a05ca | 4579 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4580 | &nfs4_renew_ops, data); |
1da177e4 LT |
4581 | } |
4582 | ||
8534d4ec | 4583 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4584 | { |
4585 | struct rpc_message msg = { | |
4586 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4587 | .rpc_argp = clp, | |
b4454fe1 | 4588 | .rpc_cred = cred, |
1da177e4 LT |
4589 | }; |
4590 | unsigned long now = jiffies; | |
4591 | int status; | |
4592 | ||
bc7a05ca | 4593 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4594 | if (status < 0) |
4595 | return status; | |
452e9352 | 4596 | do_renew_lease(clp, now); |
1da177e4 LT |
4597 | return 0; |
4598 | } | |
4599 | ||
aa1870af BF |
4600 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4601 | { | |
7dd7d959 | 4602 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4603 | } |
4604 | ||
21f498c2 TM |
4605 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4606 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4607 | * the stack. |
4608 | */ | |
21f498c2 | 4609 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4610 | |
e9e3d724 | 4611 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 4612 | struct page **pages) |
e9e3d724 NH |
4613 | { |
4614 | struct page *newpage, **spages; | |
4615 | int rc = 0; | |
4616 | size_t len; | |
4617 | spages = pages; | |
4618 | ||
4619 | do { | |
21f498c2 | 4620 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4621 | newpage = alloc_page(GFP_KERNEL); |
4622 | ||
4623 | if (newpage == NULL) | |
4624 | goto unwind; | |
4625 | memcpy(page_address(newpage), buf, len); | |
4626 | buf += len; | |
4627 | buflen -= len; | |
4628 | *pages++ = newpage; | |
4629 | rc++; | |
4630 | } while (buflen != 0); | |
4631 | ||
4632 | return rc; | |
4633 | ||
4634 | unwind: | |
4635 | for(; rc > 0; rc--) | |
4636 | __free_page(spages[rc-1]); | |
4637 | return -ENOMEM; | |
4638 | } | |
4639 | ||
e50a1c2e BF |
4640 | struct nfs4_cached_acl { |
4641 | int cached; | |
4642 | size_t len; | |
3e9d4154 | 4643 | char data[0]; |
e50a1c2e BF |
4644 | }; |
4645 | ||
4646 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4647 | { | |
4648 | struct nfs_inode *nfsi = NFS_I(inode); | |
4649 | ||
4650 | spin_lock(&inode->i_lock); | |
4651 | kfree(nfsi->nfs4_acl); | |
4652 | nfsi->nfs4_acl = acl; | |
4653 | spin_unlock(&inode->i_lock); | |
4654 | } | |
4655 | ||
4656 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4657 | { | |
4658 | nfs4_set_cached_acl(inode, NULL); | |
4659 | } | |
4660 | ||
4661 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4662 | { | |
4663 | struct nfs_inode *nfsi = NFS_I(inode); | |
4664 | struct nfs4_cached_acl *acl; | |
4665 | int ret = -ENOENT; | |
4666 | ||
4667 | spin_lock(&inode->i_lock); | |
4668 | acl = nfsi->nfs4_acl; | |
4669 | if (acl == NULL) | |
4670 | goto out; | |
4671 | if (buf == NULL) /* user is just asking for length */ | |
4672 | goto out_len; | |
4673 | if (acl->cached == 0) | |
4674 | goto out; | |
4675 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4676 | if (acl->len > buflen) | |
4677 | goto out; | |
4678 | memcpy(buf, acl->data, acl->len); | |
4679 | out_len: | |
4680 | ret = acl->len; | |
4681 | out: | |
4682 | spin_unlock(&inode->i_lock); | |
4683 | return ret; | |
4684 | } | |
4685 | ||
5794d21e | 4686 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4687 | { |
4688 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4689 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4690 | |
1f1ea6c2 | 4691 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4692 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4693 | if (acl == NULL) |
4694 | goto out; | |
4695 | acl->cached = 1; | |
5794d21e | 4696 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4697 | } else { |
4698 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4699 | if (acl == NULL) | |
4700 | goto out; | |
4701 | acl->cached = 0; | |
4702 | } | |
4703 | acl->len = acl_len; | |
4704 | out: | |
4705 | nfs4_set_cached_acl(inode, acl); | |
4706 | } | |
4707 | ||
bf118a34 AA |
4708 | /* |
4709 | * The getxattr API returns the required buffer length when called with a | |
4710 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4711 | * the required buf. On a NULL buf, we send a page of data to the server | |
4712 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4713 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4714 | * the cache. If not so, we throw away the page, and cache the required | |
4715 | * length. The next getxattr call will then produce another round trip to | |
4716 | * the server, this time with the input buf of the required size. | |
4717 | */ | |
16b4289c | 4718 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4719 | { |
bf118a34 | 4720 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4721 | struct nfs_getaclargs args = { |
4722 | .fh = NFS_FH(inode), | |
4723 | .acl_pages = pages, | |
4724 | .acl_len = buflen, | |
4725 | }; | |
663c79b3 BH |
4726 | struct nfs_getaclres res = { |
4727 | .acl_len = buflen, | |
4728 | }; | |
aa1870af BF |
4729 | struct rpc_message msg = { |
4730 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4731 | .rpc_argp = &args, | |
663c79b3 | 4732 | .rpc_resp = &res, |
aa1870af | 4733 | }; |
21f498c2 TM |
4734 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4735 | int ret = -ENOMEM, i; | |
aa1870af | 4736 | |
bf118a34 AA |
4737 | /* As long as we're doing a round trip to the server anyway, |
4738 | * let's be prepared for a page of acl data. */ | |
4739 | if (npages == 0) | |
4740 | npages = 1; | |
21f498c2 TM |
4741 | if (npages > ARRAY_SIZE(pages)) |
4742 | return -ERANGE; | |
5a006899 | 4743 | |
bf118a34 AA |
4744 | for (i = 0; i < npages; i++) { |
4745 | pages[i] = alloc_page(GFP_KERNEL); | |
4746 | if (!pages[i]) | |
4747 | goto out_free; | |
e50a1c2e | 4748 | } |
5a006899 SP |
4749 | |
4750 | /* for decoding across pages */ | |
4751 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4752 | if (!res.acl_scratch) | |
4753 | goto out_free; | |
4754 | ||
bf118a34 | 4755 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 4756 | |
de040bec | 4757 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4758 | __func__, buf, buflen, npages, args.acl_len); |
4759 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4760 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4761 | if (ret) |
4762 | goto out_free; | |
bf118a34 | 4763 | |
1f1ea6c2 TM |
4764 | /* Handle the case where the passed-in buffer is too short */ |
4765 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4766 | /* Did the user only issue a request for the acl length? */ | |
4767 | if (buf == NULL) | |
4768 | goto out_ok; | |
e50a1c2e | 4769 | ret = -ERANGE; |
1f1ea6c2 | 4770 | goto out_free; |
e50a1c2e | 4771 | } |
1f1ea6c2 | 4772 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4773 | if (buf) { |
4774 | if (res.acl_len > buflen) { | |
4775 | ret = -ERANGE; | |
4776 | goto out_free; | |
4777 | } | |
1f1ea6c2 | 4778 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4779 | } |
1f1ea6c2 TM |
4780 | out_ok: |
4781 | ret = res.acl_len; | |
e50a1c2e | 4782 | out_free: |
bf118a34 AA |
4783 | for (i = 0; i < npages; i++) |
4784 | if (pages[i]) | |
4785 | __free_page(pages[i]); | |
331818f1 TM |
4786 | if (res.acl_scratch) |
4787 | __free_page(res.acl_scratch); | |
aa1870af BF |
4788 | return ret; |
4789 | } | |
4790 | ||
16b4289c TM |
4791 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4792 | { | |
4793 | struct nfs4_exception exception = { }; | |
4794 | ssize_t ret; | |
4795 | do { | |
4796 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4797 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4798 | if (ret >= 0) |
4799 | break; | |
4800 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4801 | } while (exception.retry); | |
4802 | return ret; | |
4803 | } | |
4804 | ||
e50a1c2e BF |
4805 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4806 | { | |
4807 | struct nfs_server *server = NFS_SERVER(inode); | |
4808 | int ret; | |
4809 | ||
4810 | if (!nfs4_server_supports_acls(server)) | |
4811 | return -EOPNOTSUPP; | |
4812 | ret = nfs_revalidate_inode(server, inode); | |
4813 | if (ret < 0) | |
4814 | return ret; | |
08a22b39 AK |
4815 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4816 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4817 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4818 | if (ret != -ENOENT) | |
bf118a34 AA |
4819 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4820 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4821 | return ret; |
4822 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4823 | } | |
4824 | ||
16b4289c | 4825 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4826 | { |
4827 | struct nfs_server *server = NFS_SERVER(inode); | |
4828 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4829 | struct nfs_setaclargs arg = { | |
4830 | .fh = NFS_FH(inode), | |
4831 | .acl_pages = pages, | |
4832 | .acl_len = buflen, | |
4833 | }; | |
73c403a9 | 4834 | struct nfs_setaclres res; |
4b580ee3 BF |
4835 | struct rpc_message msg = { |
4836 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4837 | .rpc_argp = &arg, | |
73c403a9 | 4838 | .rpc_resp = &res, |
4b580ee3 | 4839 | }; |
21f498c2 | 4840 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4841 | int ret, i; |
4b580ee3 BF |
4842 | |
4843 | if (!nfs4_server_supports_acls(server)) | |
4844 | return -EOPNOTSUPP; | |
21f498c2 TM |
4845 | if (npages > ARRAY_SIZE(pages)) |
4846 | return -ERANGE; | |
8fbcf237 | 4847 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
4848 | if (i < 0) |
4849 | return i; | |
57ec14c5 | 4850 | nfs4_inode_return_delegation(inode); |
7c513058 | 4851 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4852 | |
4853 | /* | |
4854 | * Free each page after tx, so the only ref left is | |
4855 | * held by the network stack | |
4856 | */ | |
4857 | for (; i > 0; i--) | |
4858 | put_page(pages[i-1]); | |
4859 | ||
08a22b39 AK |
4860 | /* |
4861 | * Acl update can result in inode attribute update. | |
4862 | * so mark the attribute cache invalid. | |
4863 | */ | |
4864 | spin_lock(&inode->i_lock); | |
4865 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4866 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4867 | nfs_access_zap_cache(inode); |
4868 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4869 | return ret; |
4870 | } | |
4871 | ||
16b4289c TM |
4872 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4873 | { | |
4874 | struct nfs4_exception exception = { }; | |
4875 | int err; | |
4876 | do { | |
c1578b76 TM |
4877 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4878 | trace_nfs4_set_acl(inode, err); | |
4879 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4880 | &exception); |
4881 | } while (exception.retry); | |
4882 | return err; | |
4883 | } | |
4884 | ||
aa9c2669 DQ |
4885 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4886 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4887 | size_t buflen) | |
4888 | { | |
4889 | struct nfs_server *server = NFS_SERVER(inode); | |
4890 | struct nfs_fattr fattr; | |
4891 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4892 | ||
4893 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4894 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4895 | .fh = NFS_FH(inode), |
4896 | .bitmask = bitmask, | |
4897 | }; | |
4898 | struct nfs4_getattr_res res = { | |
4899 | .fattr = &fattr, | |
4900 | .label = &label, | |
4901 | .server = server, | |
4902 | }; | |
4903 | struct rpc_message msg = { | |
4904 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4905 | .rpc_argp = &arg, |
aa9c2669 DQ |
4906 | .rpc_resp = &res, |
4907 | }; | |
4908 | int ret; | |
4909 | ||
4910 | nfs_fattr_init(&fattr); | |
4911 | ||
fcb63a9b | 4912 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4913 | if (ret) |
4914 | return ret; | |
4915 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4916 | return -ENOENT; | |
4917 | if (buflen < label.len) | |
4918 | return -ERANGE; | |
4919 | return 0; | |
4920 | } | |
4921 | ||
4922 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4923 | size_t buflen) | |
4924 | { | |
4925 | struct nfs4_exception exception = { }; | |
4926 | int err; | |
4927 | ||
4928 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4929 | return -EOPNOTSUPP; | |
4930 | ||
4931 | do { | |
c1578b76 TM |
4932 | err = _nfs4_get_security_label(inode, buf, buflen); |
4933 | trace_nfs4_get_security_label(inode, err); | |
4934 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4935 | &exception); |
4936 | } while (exception.retry); | |
4937 | return err; | |
4938 | } | |
4939 | ||
4940 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4941 | struct nfs4_label *ilabel, | |
4942 | struct nfs_fattr *fattr, | |
4943 | struct nfs4_label *olabel) | |
4944 | { | |
4945 | ||
4946 | struct iattr sattr = {0}; | |
4947 | struct nfs_server *server = NFS_SERVER(inode); | |
4948 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4949 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4950 | .fh = NFS_FH(inode), |
4951 | .iap = &sattr, | |
4952 | .server = server, | |
4953 | .bitmask = bitmask, | |
4954 | .label = ilabel, | |
4955 | }; | |
4956 | struct nfs_setattrres res = { | |
4957 | .fattr = fattr, | |
4958 | .label = olabel, | |
4959 | .server = server, | |
4960 | }; | |
4961 | struct rpc_message msg = { | |
4962 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4963 | .rpc_argp = &arg, |
aa9c2669 DQ |
4964 | .rpc_resp = &res, |
4965 | }; | |
4966 | int status; | |
4967 | ||
12207f69 | 4968 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4969 | |
12207f69 | 4970 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4971 | if (status) |
4972 | dprintk("%s failed: %d\n", __func__, status); | |
4973 | ||
4974 | return status; | |
4975 | } | |
4976 | ||
4977 | static int nfs4_do_set_security_label(struct inode *inode, | |
4978 | struct nfs4_label *ilabel, | |
4979 | struct nfs_fattr *fattr, | |
4980 | struct nfs4_label *olabel) | |
4981 | { | |
4982 | struct nfs4_exception exception = { }; | |
4983 | int err; | |
4984 | ||
4985 | do { | |
c1578b76 TM |
4986 | err = _nfs4_do_set_security_label(inode, ilabel, |
4987 | fattr, olabel); | |
4988 | trace_nfs4_set_security_label(inode, err); | |
4989 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4990 | &exception); |
4991 | } while (exception.retry); | |
4992 | return err; | |
4993 | } | |
4994 | ||
4995 | static int | |
4996 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4997 | { | |
4998 | struct nfs4_label ilabel, *olabel = NULL; | |
4999 | struct nfs_fattr fattr; | |
5000 | struct rpc_cred *cred; | |
2b0143b5 | 5001 | struct inode *inode = d_inode(dentry); |
aa9c2669 DQ |
5002 | int status; |
5003 | ||
5004 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
5005 | return -EOPNOTSUPP; | |
5006 | ||
5007 | nfs_fattr_init(&fattr); | |
5008 | ||
5009 | ilabel.pi = 0; | |
5010 | ilabel.lfs = 0; | |
5011 | ilabel.label = (char *)buf; | |
5012 | ilabel.len = buflen; | |
5013 | ||
5014 | cred = rpc_lookup_cred(); | |
5015 | if (IS_ERR(cred)) | |
5016 | return PTR_ERR(cred); | |
5017 | ||
5018 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
5019 | if (IS_ERR(olabel)) { | |
5020 | status = -PTR_ERR(olabel); | |
5021 | goto out; | |
5022 | } | |
5023 | ||
5024 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
5025 | if (status == 0) | |
5026 | nfs_setsecurity(inode, &fattr, olabel); | |
5027 | ||
5028 | nfs4_label_free(olabel); | |
5029 | out: | |
5030 | put_rpccred(cred); | |
5031 | return status; | |
5032 | } | |
5033 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
5034 | ||
5035 | ||
f092075d CL |
5036 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
5037 | nfs4_verifier *bootverf) | |
cd93710e CL |
5038 | { |
5039 | __be32 verf[2]; | |
5040 | ||
2c820d9a CL |
5041 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
5042 | /* An impossible timestamp guarantees this value | |
5043 | * will never match a generated boot time. */ | |
5044 | verf[0] = 0; | |
17f26b12 | 5045 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5046 | } else { |
f092075d | 5047 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5048 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5049 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5050 | } |
cd93710e CL |
5051 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5052 | } | |
5053 | ||
a3192688 JL |
5054 | static int |
5055 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5056 | { |
a3192688 JL |
5057 | size_t len; |
5058 | char *str; | |
e984a55a | 5059 | |
ceb3a16c | 5060 | if (clp->cl_owner_id != NULL) |
a3192688 | 5061 | return 0; |
4a3e5779 | 5062 | |
a3192688 | 5063 | rcu_read_lock(); |
4a70316c | 5064 | len = 14 + strlen(clp->cl_ipaddr) + 1 + |
a3192688 JL |
5065 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
5066 | 1 + | |
5067 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5068 | 1; | |
5069 | rcu_read_unlock(); | |
5070 | ||
5071 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5072 | return -EINVAL; | |
5073 | ||
5074 | /* | |
5075 | * Since this string is allocated at mount time, and held until the | |
5076 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5077 | * about a memory-reclaim deadlock. | |
5078 | */ | |
5079 | str = kmalloc(len, GFP_KERNEL); | |
5080 | if (!str) | |
5081 | return -ENOMEM; | |
ceb3a16c | 5082 | |
e984a55a | 5083 | rcu_read_lock(); |
f2dd436e | 5084 | scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
a3192688 JL |
5085 | clp->cl_ipaddr, |
5086 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5087 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5088 | rcu_read_unlock(); |
a3192688 | 5089 | |
a3192688 JL |
5090 | clp->cl_owner_id = str; |
5091 | return 0; | |
e984a55a CL |
5092 | } |
5093 | ||
873e3851 JL |
5094 | static int |
5095 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5096 | { | |
873e3851 JL |
5097 | size_t len; |
5098 | char *str; | |
5099 | ||
5100 | len = 10 + 10 + 1 + 10 + 1 + | |
5101 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5102 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5103 | ||
5104 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5105 | return -EINVAL; | |
5106 | ||
5107 | /* | |
5108 | * Since this string is allocated at mount time, and held until the | |
5109 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5110 | * about a memory-reclaim deadlock. | |
5111 | */ | |
5112 | str = kmalloc(len, GFP_KERNEL); | |
5113 | if (!str) | |
5114 | return -ENOMEM; | |
5115 | ||
f2dd436e | 5116 | scnprintf(str, len, "Linux NFSv%u.%u %s/%s", |
873e3851 JL |
5117 | clp->rpc_ops->version, clp->cl_minorversion, |
5118 | nfs4_client_id_uniquifier, | |
5119 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5120 | clp->cl_owner_id = str; |
5121 | return 0; | |
5122 | } | |
5123 | ||
5124 | static int | |
5125 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5126 | { |
873e3851 JL |
5127 | size_t len; |
5128 | char *str; | |
ceb3a16c TM |
5129 | |
5130 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5131 | return 0; |
6f2ea7f2 CL |
5132 | |
5133 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5134 | return nfs4_init_uniquifier_client_string(clp); |
5135 | ||
5136 | len = 10 + 10 + 1 + 10 + 1 + | |
5137 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5138 | ||
5139 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5140 | return -EINVAL; | |
5141 | ||
5142 | /* | |
5143 | * Since this string is allocated at mount time, and held until the | |
5144 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5145 | * about a memory-reclaim deadlock. | |
5146 | */ | |
5147 | str = kmalloc(len, GFP_KERNEL); | |
5148 | if (!str) | |
5149 | return -ENOMEM; | |
5150 | ||
f2dd436e | 5151 | scnprintf(str, len, "Linux NFSv%u.%u %s", |
873e3851 JL |
5152 | clp->rpc_ops->version, clp->cl_minorversion, |
5153 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5154 | clp->cl_owner_id = str; |
5155 | return 0; | |
e984a55a CL |
5156 | } |
5157 | ||
706cb8db CL |
5158 | /* |
5159 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5160 | * services. Advertise one based on the address family of the | |
5161 | * clientaddr. | |
5162 | */ | |
5163 | static unsigned int | |
5164 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5165 | { | |
5166 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5167 | return scnprintf(buf, len, "tcp6"); | |
5168 | else | |
5169 | return scnprintf(buf, len, "tcp"); | |
5170 | } | |
5171 | ||
f11b2a1c JL |
5172 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5173 | { | |
5174 | struct nfs4_setclientid *sc = calldata; | |
5175 | ||
5176 | if (task->tk_status == 0) | |
5177 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5178 | } | |
5179 | ||
5180 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5181 | .rpc_call_done = nfs4_setclientid_done, | |
5182 | }; | |
5183 | ||
6bbb4ae8 CL |
5184 | /** |
5185 | * nfs4_proc_setclientid - Negotiate client ID | |
5186 | * @clp: state data structure | |
5187 | * @program: RPC program for NFSv4 callback service | |
5188 | * @port: IP port number for NFS4 callback service | |
5189 | * @cred: RPC credential to use for this call | |
5190 | * @res: where to place the result | |
5191 | * | |
5192 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5193 | */ | |
bb8b27e5 TM |
5194 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5195 | unsigned short port, struct rpc_cred *cred, | |
5196 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5197 | { |
5198 | nfs4_verifier sc_verifier; | |
5199 | struct nfs4_setclientid setclientid = { | |
5200 | .sc_verifier = &sc_verifier, | |
5201 | .sc_prog = program, | |
3a6bb738 | 5202 | .sc_clnt = clp, |
1da177e4 LT |
5203 | }; |
5204 | struct rpc_message msg = { | |
5205 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5206 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5207 | .rpc_resp = res, |
286d7d6a | 5208 | .rpc_cred = cred, |
1da177e4 | 5209 | }; |
f11b2a1c JL |
5210 | struct rpc_task *task; |
5211 | struct rpc_task_setup task_setup_data = { | |
5212 | .rpc_client = clp->cl_rpcclient, | |
5213 | .rpc_message = &msg, | |
5214 | .callback_ops = &nfs4_setclientid_ops, | |
5215 | .callback_data = &setclientid, | |
5216 | .flags = RPC_TASK_TIMEOUT, | |
5217 | }; | |
6bbb4ae8 | 5218 | int status; |
1da177e4 | 5219 | |
de734831 | 5220 | /* nfs_client_id4 */ |
f092075d | 5221 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5222 | |
5223 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5224 | status = nfs4_init_uniform_client_string(clp); | |
5225 | else | |
a3192688 | 5226 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5227 | |
5228 | if (status) | |
5229 | goto out; | |
3a6bb738 | 5230 | |
de734831 | 5231 | /* cb_client4 */ |
706cb8db CL |
5232 | setclientid.sc_netid_len = |
5233 | nfs4_init_callback_netid(clp, | |
5234 | setclientid.sc_netid, | |
5235 | sizeof(setclientid.sc_netid)); | |
de734831 | 5236 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5237 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5238 | clp->cl_ipaddr, port >> 8, port & 255); |
5239 | ||
3a6bb738 | 5240 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5241 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5242 | clp->cl_owner_id); |
f11b2a1c JL |
5243 | task = rpc_run_task(&task_setup_data); |
5244 | if (IS_ERR(task)) { | |
5245 | status = PTR_ERR(task); | |
5246 | goto out; | |
5247 | } | |
5248 | status = task->tk_status; | |
5249 | if (setclientid.sc_cred) { | |
5250 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5251 | put_rpccred(setclientid.sc_cred); | |
5252 | } | |
5253 | rpc_put_task(task); | |
5254 | out: | |
c6d01c6f | 5255 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5256 | dprintk("NFS reply setclientid: %d\n", status); |
5257 | return status; | |
1da177e4 LT |
5258 | } |
5259 | ||
6bbb4ae8 CL |
5260 | /** |
5261 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5262 | * @clp: state data structure | |
5263 | * @res: result of a previous SETCLIENTID | |
5264 | * @cred: RPC credential to use for this call | |
5265 | * | |
5266 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5267 | */ | |
fd954ae1 | 5268 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5269 | struct nfs4_setclientid_res *arg, |
5270 | struct rpc_cred *cred) | |
1da177e4 | 5271 | { |
1da177e4 LT |
5272 | struct rpc_message msg = { |
5273 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5274 | .rpc_argp = arg, |
286d7d6a | 5275 | .rpc_cred = cred, |
1da177e4 | 5276 | }; |
1da177e4 LT |
5277 | int status; |
5278 | ||
6bbb4ae8 CL |
5279 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5280 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5281 | clp->cl_clientid); | |
1bd714f2 | 5282 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5283 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5284 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5285 | return status; |
5286 | } | |
5287 | ||
fe650407 TM |
5288 | struct nfs4_delegreturndata { |
5289 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5290 | struct nfs4_delegreturnres res; |
fe650407 TM |
5291 | struct nfs_fh fh; |
5292 | nfs4_stateid stateid; | |
26e976a8 | 5293 | unsigned long timestamp; |
fa178f29 | 5294 | struct nfs_fattr fattr; |
fe650407 | 5295 | int rpc_status; |
039b756a PT |
5296 | struct inode *inode; |
5297 | bool roc; | |
5298 | u32 roc_barrier; | |
fe650407 TM |
5299 | }; |
5300 | ||
fe650407 TM |
5301 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5302 | { | |
5303 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5304 | |
14516c3a TM |
5305 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5306 | return; | |
938e1010 | 5307 | |
ca8acf8d | 5308 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5309 | switch (task->tk_status) { |
79708861 | 5310 | case 0: |
fa178f29 | 5311 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5312 | case -NFS4ERR_ADMIN_REVOKED: |
5313 | case -NFS4ERR_DELEG_REVOKED: | |
5314 | case -NFS4ERR_BAD_STATEID: | |
5315 | case -NFS4ERR_OLD_STATEID: | |
5316 | case -NFS4ERR_STALE_STATEID: | |
5317 | case -NFS4ERR_EXPIRED: | |
5318 | task->tk_status = 0; | |
039b756a PT |
5319 | if (data->roc) |
5320 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5321 | break; |
79708861 | 5322 | default: |
8478eaa1 N |
5323 | if (nfs4_async_handle_error(task, data->res.server, |
5324 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5325 | rpc_restart_call_prepare(task); |
79708861 RL |
5326 | return; |
5327 | } | |
5328 | } | |
5329 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5330 | } |
5331 | ||
5332 | static void nfs4_delegreturn_release(void *calldata) | |
5333 | { | |
039b756a | 5334 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5335 | struct inode *inode = data->inode; |
039b756a | 5336 | |
ea7c38fe TM |
5337 | if (inode) { |
5338 | if (data->roc) | |
5339 | pnfs_roc_release(inode); | |
5340 | nfs_iput_and_deactive(inode); | |
5341 | } | |
fe650407 TM |
5342 | kfree(calldata); |
5343 | } | |
5344 | ||
938e1010 AA |
5345 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5346 | { | |
5347 | struct nfs4_delegreturndata *d_data; | |
5348 | ||
5349 | d_data = (struct nfs4_delegreturndata *)data; | |
5350 | ||
500d701f PT |
5351 | if (nfs4_wait_on_layoutreturn(d_data->inode, task)) |
5352 | return; | |
5353 | ||
4ff376fe TM |
5354 | if (d_data->roc) |
5355 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5356 | |
d9afbd1b TM |
5357 | nfs4_setup_sequence(d_data->res.server, |
5358 | &d_data->args.seq_args, | |
5359 | &d_data->res.seq_res, | |
5360 | task); | |
938e1010 | 5361 | } |
938e1010 | 5362 | |
c8d149f3 | 5363 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5364 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5365 | .rpc_call_done = nfs4_delegreturn_done, |
5366 | .rpc_release = nfs4_delegreturn_release, | |
5367 | }; | |
5368 | ||
e6f81075 | 5369 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5370 | { |
5371 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5372 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5373 | struct rpc_task *task; |
5138fde0 TM |
5374 | struct rpc_message msg = { |
5375 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5376 | .rpc_cred = cred, | |
5377 | }; | |
c970aa85 TM |
5378 | struct rpc_task_setup task_setup_data = { |
5379 | .rpc_client = server->client, | |
5138fde0 | 5380 | .rpc_message = &msg, |
c970aa85 TM |
5381 | .callback_ops = &nfs4_delegreturn_ops, |
5382 | .flags = RPC_TASK_ASYNC, | |
5383 | }; | |
e6f81075 | 5384 | int status = 0; |
fe650407 | 5385 | |
8535b2be | 5386 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5387 | if (data == NULL) |
5388 | return -ENOMEM; | |
a9c92d6b | 5389 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
99ade3c7 AE |
5390 | |
5391 | nfs4_state_protect(server->nfs_client, | |
5392 | NFS_SP4_MACH_CRED_CLEANUP, | |
5393 | &task_setup_data.rpc_client, &msg); | |
5394 | ||
fe650407 TM |
5395 | data->args.fhandle = &data->fh; |
5396 | data->args.stateid = &data->stateid; | |
9e907fec | 5397 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5398 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5399 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5400 | data->res.fattr = &data->fattr; |
5401 | data->res.server = server; | |
5138fde0 | 5402 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5403 | data->timestamp = jiffies; |
fe650407 | 5404 | data->rpc_status = 0; |
ea7c38fe TM |
5405 | data->inode = nfs_igrab_and_active(inode); |
5406 | if (data->inode) | |
5407 | data->roc = nfs4_roc(inode); | |
fe650407 | 5408 | |
c970aa85 | 5409 | task_setup_data.callback_data = data; |
1174dd1f TM |
5410 | msg.rpc_argp = &data->args; |
5411 | msg.rpc_resp = &data->res; | |
c970aa85 | 5412 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5413 | if (IS_ERR(task)) |
fe650407 | 5414 | return PTR_ERR(task); |
e6f81075 TM |
5415 | if (!issync) |
5416 | goto out; | |
fe650407 | 5417 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5418 | if (status != 0) |
5419 | goto out; | |
5420 | status = data->rpc_status; | |
e144cbcc TM |
5421 | if (status == 0) |
5422 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5423 | else | |
5424 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5425 | out: |
e6b3c4db | 5426 | rpc_put_task(task); |
fe650407 | 5427 | return status; |
1da177e4 LT |
5428 | } |
5429 | ||
e6f81075 | 5430 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5431 | { |
5432 | struct nfs_server *server = NFS_SERVER(inode); | |
5433 | struct nfs4_exception exception = { }; | |
5434 | int err; | |
5435 | do { | |
e6f81075 | 5436 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
48c9579a | 5437 | trace_nfs4_delegreturn(inode, stateid, err); |
1da177e4 LT |
5438 | switch (err) { |
5439 | case -NFS4ERR_STALE_STATEID: | |
5440 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5441 | case 0: |
5442 | return 0; | |
5443 | } | |
5444 | err = nfs4_handle_exception(server, err, &exception); | |
5445 | } while (exception.retry); | |
5446 | return err; | |
5447 | } | |
5448 | ||
5449 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5450 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5451 | ||
5452 | /* | |
5453 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5454 | */ | |
5455 | static unsigned long | |
5456 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5457 | { | |
416ad3c9 | 5458 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5459 | timeout <<= 1; |
5460 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5461 | return NFS4_LOCK_MAXTIMEOUT; | |
5462 | return timeout; | |
5463 | } | |
5464 | ||
1da177e4 LT |
5465 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5466 | { | |
5467 | struct inode *inode = state->inode; | |
5468 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5469 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5470 | struct nfs_lockt_args arg = { |
1da177e4 | 5471 | .fh = NFS_FH(inode), |
911d1aaf | 5472 | .fl = request, |
1da177e4 | 5473 | }; |
911d1aaf TM |
5474 | struct nfs_lockt_res res = { |
5475 | .denied = request, | |
1da177e4 LT |
5476 | }; |
5477 | struct rpc_message msg = { | |
5478 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5479 | .rpc_argp = &arg, | |
5480 | .rpc_resp = &res, | |
5481 | .rpc_cred = state->owner->so_cred, | |
5482 | }; | |
1da177e4 LT |
5483 | struct nfs4_lock_state *lsp; |
5484 | int status; | |
5485 | ||
911d1aaf | 5486 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5487 | status = nfs4_set_lock_state(state, request); |
5488 | if (status != 0) | |
5489 | goto out; | |
5490 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5491 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5492 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5493 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5494 | switch (status) { |
5495 | case 0: | |
5496 | request->fl_type = F_UNLCK; | |
5497 | break; | |
5498 | case -NFS4ERR_DENIED: | |
5499 | status = 0; | |
1da177e4 | 5500 | } |
70cc6487 | 5501 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5502 | request->fl_ops = NULL; |
8d0a8a9d | 5503 | out: |
1da177e4 LT |
5504 | return status; |
5505 | } | |
5506 | ||
5507 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5508 | { | |
5509 | struct nfs4_exception exception = { }; | |
5510 | int err; | |
5511 | ||
5512 | do { | |
d1b748a5 TM |
5513 | err = _nfs4_proc_getlk(state, cmd, request); |
5514 | trace_nfs4_get_lock(request, state, cmd, err); | |
5515 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5516 | &exception); |
5517 | } while (exception.retry); | |
5518 | return err; | |
5519 | } | |
5520 | ||
83bfff23 | 5521 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 | 5522 | { |
4f656367 | 5523 | return locks_lock_inode_wait(inode, fl); |
1da177e4 LT |
5524 | } |
5525 | ||
faf5f49c | 5526 | struct nfs4_unlockdata { |
911d1aaf TM |
5527 | struct nfs_locku_args arg; |
5528 | struct nfs_locku_res res; | |
faf5f49c TM |
5529 | struct nfs4_lock_state *lsp; |
5530 | struct nfs_open_context *ctx; | |
911d1aaf | 5531 | struct file_lock fl; |
516285eb | 5532 | struct nfs_server *server; |
26e976a8 | 5533 | unsigned long timestamp; |
faf5f49c TM |
5534 | }; |
5535 | ||
911d1aaf TM |
5536 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5537 | struct nfs_open_context *ctx, | |
5538 | struct nfs4_lock_state *lsp, | |
5539 | struct nfs_seqid *seqid) | |
5540 | { | |
5541 | struct nfs4_unlockdata *p; | |
5542 | struct inode *inode = lsp->ls_state->inode; | |
5543 | ||
8535b2be | 5544 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5545 | if (p == NULL) |
5546 | return NULL; | |
5547 | p->arg.fh = NFS_FH(inode); | |
5548 | p->arg.fl = &p->fl; | |
5549 | p->arg.seqid = seqid; | |
c1d51931 | 5550 | p->res.seqid = seqid; |
911d1aaf TM |
5551 | p->lsp = lsp; |
5552 | atomic_inc(&lsp->ls_count); | |
5553 | /* Ensure we don't close file until we're done freeing locks! */ | |
5554 | p->ctx = get_nfs_open_context(ctx); | |
5555 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5556 | p->server = NFS_SERVER(inode); | |
5557 | return p; | |
5558 | } | |
5559 | ||
06f814a3 | 5560 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5561 | { |
963d8fe5 | 5562 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5563 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5564 | nfs4_put_lock_state(calldata->lsp); |
5565 | put_nfs_open_context(calldata->ctx); | |
5566 | kfree(calldata); | |
faf5f49c TM |
5567 | } |
5568 | ||
963d8fe5 | 5569 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5570 | { |
963d8fe5 | 5571 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5572 | |
14516c3a TM |
5573 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5574 | return; | |
faf5f49c TM |
5575 | switch (task->tk_status) { |
5576 | case 0: | |
26e976a8 | 5577 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5578 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5579 | if (nfs4_update_lock_stateid(calldata->lsp, |
5580 | &calldata->res.stateid)) | |
5581 | break; | |
9e33bed5 TM |
5582 | case -NFS4ERR_BAD_STATEID: |
5583 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5584 | case -NFS4ERR_STALE_STATEID: |
5585 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5586 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5587 | &calldata->lsp->ls_stateid)) | |
5588 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5589 | break; |
5590 | default: | |
8478eaa1 N |
5591 | if (nfs4_async_handle_error(task, calldata->server, |
5592 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5593 | rpc_restart_call_prepare(task); |
faf5f49c | 5594 | } |
2b1bc308 | 5595 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5596 | } |
5597 | ||
4ce70ada | 5598 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5599 | { |
4ce70ada | 5600 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5601 | |
911d1aaf | 5602 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5603 | goto out_wait; |
425c1d4e | 5604 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5605 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5606 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5607 | goto out_no_action; |
faf5f49c | 5608 | } |
26e976a8 | 5609 | calldata->timestamp = jiffies; |
035168ab | 5610 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5611 | &calldata->arg.seq_args, |
2240a9e2 TM |
5612 | &calldata->res.seq_res, |
5613 | task) != 0) | |
5614 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5615 | return; |
5616 | out_no_action: | |
5617 | task->tk_action = NULL; | |
5618 | out_wait: | |
5619 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5620 | } |
5621 | ||
963d8fe5 | 5622 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5623 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5624 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5625 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5626 | }; |
5627 | ||
a5d16a4d TM |
5628 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5629 | struct nfs_open_context *ctx, | |
5630 | struct nfs4_lock_state *lsp, | |
5631 | struct nfs_seqid *seqid) | |
5632 | { | |
5633 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5634 | struct rpc_message msg = { |
5635 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5636 | .rpc_cred = ctx->cred, | |
5637 | }; | |
c970aa85 TM |
5638 | struct rpc_task_setup task_setup_data = { |
5639 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5640 | .rpc_message = &msg, |
c970aa85 | 5641 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5642 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5643 | .flags = RPC_TASK_ASYNC, |
5644 | }; | |
a5d16a4d | 5645 | |
fa940720 WAA |
5646 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5647 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5648 | ||
137d6aca FF |
5649 | /* Ensure this is an unlock - when canceling a lock, the |
5650 | * canceled lock is passed in, and it won't be an unlock. | |
5651 | */ | |
5652 | fl->fl_type = F_UNLCK; | |
5653 | ||
a5d16a4d TM |
5654 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5655 | if (data == NULL) { | |
5656 | nfs_free_seqid(seqid); | |
5657 | return ERR_PTR(-ENOMEM); | |
5658 | } | |
5659 | ||
a9c92d6b | 5660 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5661 | msg.rpc_argp = &data->arg; |
5662 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5663 | task_setup_data.callback_data = data; |
5664 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5665 | } |
5666 | ||
faf5f49c TM |
5667 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5668 | { | |
65b62a29 TM |
5669 | struct inode *inode = state->inode; |
5670 | struct nfs4_state_owner *sp = state->owner; | |
5671 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5672 | struct nfs_seqid *seqid; |
1da177e4 | 5673 | struct nfs4_lock_state *lsp; |
06f814a3 | 5674 | struct rpc_task *task; |
b4019c0e | 5675 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5676 | int status = 0; |
536ff0f8 | 5677 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5678 | |
8d0a8a9d | 5679 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5680 | /* Unlock _before_ we do the RPC call */ |
5681 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5682 | /* Exclude nfs_delegation_claim_locks() */ |
5683 | mutex_lock(&sp->so_delegreturn_mutex); | |
5684 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5685 | down_read(&nfsi->rwsem); |
83bfff23 | 5686 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5687 | up_read(&nfsi->rwsem); |
65b62a29 | 5688 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5689 | goto out; |
19e03c57 TM |
5690 | } |
5691 | up_read(&nfsi->rwsem); | |
65b62a29 | 5692 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5693 | if (status != 0) |
9b073574 TM |
5694 | goto out; |
5695 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5696 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5697 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5698 | goto out; | |
b4019c0e TM |
5699 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5700 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5701 | status = -ENOMEM; |
badc76dd | 5702 | if (IS_ERR(seqid)) |
9b073574 | 5703 | goto out; |
cd3758e3 | 5704 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5705 | status = PTR_ERR(task); |
5706 | if (IS_ERR(task)) | |
9b073574 | 5707 | goto out; |
a5d16a4d | 5708 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5709 | rpc_put_task(task); |
9b073574 | 5710 | out: |
536ff0f8 | 5711 | request->fl_flags = fl_flags; |
d1b748a5 | 5712 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5713 | return status; |
5714 | } | |
5715 | ||
a5d16a4d TM |
5716 | struct nfs4_lockdata { |
5717 | struct nfs_lock_args arg; | |
5718 | struct nfs_lock_res res; | |
5719 | struct nfs4_lock_state *lsp; | |
5720 | struct nfs_open_context *ctx; | |
5721 | struct file_lock fl; | |
26e976a8 | 5722 | unsigned long timestamp; |
a5d16a4d TM |
5723 | int rpc_status; |
5724 | int cancelled; | |
66179efe | 5725 | struct nfs_server *server; |
a5d16a4d TM |
5726 | }; |
5727 | ||
5728 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5729 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5730 | gfp_t gfp_mask) | |
1da177e4 | 5731 | { |
a5d16a4d TM |
5732 | struct nfs4_lockdata *p; |
5733 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5734 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5735 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5736 | |
8535b2be | 5737 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5738 | if (p == NULL) |
5739 | return NULL; | |
5740 | ||
5741 | p->arg.fh = NFS_FH(inode); | |
5742 | p->arg.fl = &p->fl; | |
8535b2be | 5743 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5744 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5745 | goto out_free; |
b4019c0e TM |
5746 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5747 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5748 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5749 | goto out_free_seqid; |
7539bbab | 5750 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5751 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5752 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5753 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5754 | p->lsp = lsp; |
66179efe | 5755 | p->server = server; |
a5d16a4d TM |
5756 | atomic_inc(&lsp->ls_count); |
5757 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5758 | get_file(fl->fl_file); |
a5d16a4d TM |
5759 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5760 | return p; | |
2f74c0a0 TM |
5761 | out_free_seqid: |
5762 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5763 | out_free: |
5764 | kfree(p); | |
5765 | return NULL; | |
5766 | } | |
5767 | ||
5768 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5769 | { | |
5770 | struct nfs4_lockdata *data = calldata; | |
5771 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5772 | |
3110ff80 | 5773 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5774 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5775 | goto out_wait; |
a5d16a4d | 5776 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5777 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5778 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5779 | goto out_release_lock_seqid; |
8fe72bac | 5780 | } |
425c1d4e TM |
5781 | nfs4_stateid_copy(&data->arg.open_stateid, |
5782 | &state->open_stateid); | |
a5d16a4d | 5783 | data->arg.new_lock_owner = 1; |
c1d51931 | 5784 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5785 | } else { |
2f74c0a0 | 5786 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5787 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5788 | &data->lsp->ls_stateid); | |
5789 | } | |
5d422301 TM |
5790 | if (!nfs4_valid_open_stateid(state)) { |
5791 | data->rpc_status = -EBADF; | |
5792 | task->tk_action = NULL; | |
5793 | goto out_release_open_seqid; | |
5794 | } | |
26e976a8 | 5795 | data->timestamp = jiffies; |
035168ab TM |
5796 | if (nfs4_setup_sequence(data->server, |
5797 | &data->arg.seq_args, | |
2240a9e2 | 5798 | &data->res.seq_res, |
d9afbd1b | 5799 | task) == 0) |
66179efe | 5800 | return; |
5d422301 | 5801 | out_release_open_seqid: |
2240a9e2 TM |
5802 | nfs_release_seqid(data->arg.open_seqid); |
5803 | out_release_lock_seqid: | |
5804 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5805 | out_wait: |
5806 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5807 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5808 | } |
5809 | ||
a5d16a4d TM |
5810 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5811 | { | |
5812 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5813 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5814 | |
3110ff80 | 5815 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5816 | |
14516c3a TM |
5817 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5818 | return; | |
66179efe | 5819 | |
a5d16a4d | 5820 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5821 | switch (task->tk_status) { |
5822 | case 0: | |
2b0143b5 | 5823 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5824 | data->timestamp); |
c69899a1 TM |
5825 | if (data->arg.new_lock) { |
5826 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5827 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5828 | rpc_restart_call_prepare(task); |
5829 | break; | |
5830 | } | |
5831 | } | |
39071e6f TM |
5832 | if (data->arg.new_lock_owner != 0) { |
5833 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5834 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5835 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5836 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5837 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5838 | break; |
5839 | case -NFS4ERR_BAD_STATEID: | |
5840 | case -NFS4ERR_OLD_STATEID: | |
5841 | case -NFS4ERR_STALE_STATEID: | |
5842 | case -NFS4ERR_EXPIRED: | |
5843 | if (data->arg.new_lock_owner != 0) { | |
5844 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5845 | &lsp->ls_state->open_stateid)) | |
5846 | rpc_restart_call_prepare(task); | |
5847 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5848 | &lsp->ls_stateid)) | |
5849 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5850 | } |
3110ff80 | 5851 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5852 | } |
5853 | ||
5854 | static void nfs4_lock_release(void *calldata) | |
5855 | { | |
5856 | struct nfs4_lockdata *data = calldata; | |
5857 | ||
3110ff80 | 5858 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5859 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5860 | if (data->cancelled != 0) { |
5861 | struct rpc_task *task; | |
5862 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5863 | data->arg.lock_seqid); | |
5864 | if (!IS_ERR(task)) | |
bf294b41 | 5865 | rpc_put_task_async(task); |
3110ff80 | 5866 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5867 | } else |
5868 | nfs_free_seqid(data->arg.lock_seqid); | |
5869 | nfs4_put_lock_state(data->lsp); | |
5870 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5871 | fput(data->fl.fl_file); |
a5d16a4d | 5872 | kfree(data); |
3110ff80 | 5873 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5874 | } |
5875 | ||
5876 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5877 | .rpc_call_prepare = nfs4_lock_prepare, | |
5878 | .rpc_call_done = nfs4_lock_done, | |
5879 | .rpc_release = nfs4_lock_release, | |
5880 | }; | |
5881 | ||
2bee72a6 TM |
5882 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5883 | { | |
2bee72a6 TM |
5884 | switch (error) { |
5885 | case -NFS4ERR_ADMIN_REVOKED: | |
5886 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5887 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5888 | if (new_lock_owner != 0 || |
795a88c9 | 5889 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5890 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5891 | break; |
5892 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5893 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5894 | case -NFS4ERR_EXPIRED: |
5895 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5896 | }; |
5897 | } | |
5898 | ||
afe6c27c | 5899 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5900 | { |
5901 | struct nfs4_lockdata *data; | |
5902 | struct rpc_task *task; | |
5138fde0 TM |
5903 | struct rpc_message msg = { |
5904 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5905 | .rpc_cred = state->owner->so_cred, | |
5906 | }; | |
c970aa85 TM |
5907 | struct rpc_task_setup task_setup_data = { |
5908 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5909 | .rpc_message = &msg, |
c970aa85 | 5910 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5911 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5912 | .flags = RPC_TASK_ASYNC, |
5913 | }; | |
a5d16a4d TM |
5914 | int ret; |
5915 | ||
3110ff80 | 5916 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5917 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5918 | fl->fl_u.nfs4_fl.owner, |
5919 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5920 | if (data == NULL) |
5921 | return -ENOMEM; | |
5922 | if (IS_SETLKW(cmd)) | |
5923 | data->arg.block = 1; | |
a9c92d6b | 5924 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5925 | msg.rpc_argp = &data->arg; |
5926 | msg.rpc_resp = &data->res; | |
c970aa85 | 5927 | task_setup_data.callback_data = data; |
8fe72bac TM |
5928 | if (recovery_type > NFS_LOCK_NEW) { |
5929 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5930 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5931 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5932 | } else |
5933 | data->arg.new_lock = 1; | |
c970aa85 | 5934 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5935 | if (IS_ERR(task)) |
a5d16a4d | 5936 | return PTR_ERR(task); |
a5d16a4d TM |
5937 | ret = nfs4_wait_for_completion_rpc_task(task); |
5938 | if (ret == 0) { | |
5939 | ret = data->rpc_status; | |
2bee72a6 TM |
5940 | if (ret) |
5941 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5942 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5943 | } else |
5944 | data->cancelled = 1; | |
e6b3c4db | 5945 | rpc_put_task(task); |
3110ff80 | 5946 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
48c9579a | 5947 | trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret); |
a5d16a4d | 5948 | return ret; |
1da177e4 LT |
5949 | } |
5950 | ||
5951 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5952 | { | |
202b50dc | 5953 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5954 | struct nfs4_exception exception = { |
5955 | .inode = state->inode, | |
5956 | }; | |
202b50dc TM |
5957 | int err; |
5958 | ||
5959 | do { | |
42a2d13e TM |
5960 | /* Cache the lock if possible... */ |
5961 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5962 | return 0; | |
afe6c27c | 5963 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5964 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5965 | break; |
5966 | nfs4_handle_exception(server, err, &exception); | |
5967 | } while (exception.retry); | |
5968 | return err; | |
1da177e4 LT |
5969 | } |
5970 | ||
5971 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5972 | { | |
202b50dc | 5973 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5974 | struct nfs4_exception exception = { |
5975 | .inode = state->inode, | |
5976 | }; | |
202b50dc TM |
5977 | int err; |
5978 | ||
6bfc93ef TM |
5979 | err = nfs4_set_lock_state(state, request); |
5980 | if (err != 0) | |
5981 | return err; | |
f6de7a39 | 5982 | if (!recover_lost_locks) { |
ef1820f9 N |
5983 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5984 | return 0; | |
5985 | } | |
202b50dc | 5986 | do { |
42a2d13e TM |
5987 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5988 | return 0; | |
afe6c27c | 5989 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
5990 | switch (err) { |
5991 | default: | |
5992 | goto out; | |
5993 | case -NFS4ERR_GRACE: | |
5994 | case -NFS4ERR_DELAY: | |
5995 | nfs4_handle_exception(server, err, &exception); | |
5996 | err = 0; | |
5997 | } | |
202b50dc | 5998 | } while (exception.retry); |
a9ed2e25 | 5999 | out: |
202b50dc | 6000 | return err; |
1da177e4 LT |
6001 | } |
6002 | ||
f062eb6c | 6003 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
6004 | /** |
6005 | * nfs41_check_expired_locks - possibly free a lock stateid | |
6006 | * | |
6007 | * @state: NFSv4 state for an inode | |
6008 | * | |
6009 | * Returns NFS_OK if recovery for this stateid is now finished. | |
6010 | * Otherwise a negative NFS4ERR value is returned. | |
6011 | */ | |
b01dd1d8 | 6012 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 6013 | { |
eb64cf96 | 6014 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 6015 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
6016 | struct nfs_server *server = NFS_SERVER(state->inode); |
6017 | ||
b01dd1d8 | 6018 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 6019 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
6020 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
6021 | ||
6022 | status = nfs41_test_stateid(server, | |
6023 | &lsp->ls_stateid, | |
6024 | cred); | |
08cb47fa | 6025 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 6026 | if (status != NFS_OK) { |
3e60ffdd CL |
6027 | /* Free the stateid unless the server |
6028 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
6029 | if (status != -NFS4ERR_BAD_STATEID) |
6030 | nfs41_free_stateid(server, | |
ab7cb0df TM |
6031 | &lsp->ls_stateid, |
6032 | cred); | |
795a88c9 | 6033 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
6034 | ret = status; |
6035 | } | |
6036 | } | |
6037 | }; | |
6038 | ||
6039 | return ret; | |
6040 | } | |
6041 | ||
6042 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6043 | { | |
6044 | int status = NFS_OK; | |
6045 | ||
6046 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
6047 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
6048 | if (status != NFS_OK) |
6049 | status = nfs4_lock_expired(state, request); | |
6050 | return status; | |
f062eb6c BS |
6051 | } |
6052 | #endif | |
6053 | ||
1da177e4 LT |
6054 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6055 | { | |
19e03c57 | 6056 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 6057 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6058 | int status = -ENOLCK; |
1da177e4 | 6059 | |
8e469ebd TM |
6060 | if ((fl_flags & FL_POSIX) && |
6061 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6062 | goto out; | |
6bfc93ef | 6063 | /* Is this a delegated open? */ |
6bfc93ef TM |
6064 | status = nfs4_set_lock_state(state, request); |
6065 | if (status != 0) | |
6066 | goto out; | |
01c3b861 | 6067 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6068 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6069 | if (status < 0) |
6070 | goto out; | |
19e03c57 | 6071 | down_read(&nfsi->rwsem); |
01c3b861 | 6072 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6073 | /* Yes: cache locks! */ |
01c3b861 | 6074 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6075 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6076 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6077 | up_read(&nfsi->rwsem); |
9a99af49 | 6078 | goto out; |
9a99af49 | 6079 | } |
19e03c57 | 6080 | up_read(&nfsi->rwsem); |
c69899a1 | 6081 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6082 | out: |
6083 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6084 | return status; |
6085 | } | |
6086 | ||
6087 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6088 | { | |
a1d0b5ee TM |
6089 | struct nfs4_exception exception = { |
6090 | .state = state, | |
05ffe24f | 6091 | .inode = state->inode, |
a1d0b5ee | 6092 | }; |
1da177e4 LT |
6093 | int err; |
6094 | ||
6095 | do { | |
965b5d67 TM |
6096 | err = _nfs4_proc_setlk(state, cmd, request); |
6097 | if (err == -NFS4ERR_DENIED) | |
6098 | err = -EAGAIN; | |
1da177e4 | 6099 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6100 | err, &exception); |
1da177e4 LT |
6101 | } while (exception.retry); |
6102 | return err; | |
6103 | } | |
6104 | ||
6105 | static int | |
6106 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6107 | { | |
6108 | struct nfs_open_context *ctx; | |
6109 | struct nfs4_state *state; | |
6110 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6111 | int status; | |
6112 | ||
6113 | /* verify open state */ | |
cd3758e3 | 6114 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6115 | state = ctx->state; |
6116 | ||
6117 | if (request->fl_start < 0 || request->fl_end < 0) | |
6118 | return -EINVAL; | |
6119 | ||
d953126a TM |
6120 | if (IS_GETLK(cmd)) { |
6121 | if (state != NULL) | |
6122 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6123 | return 0; | |
6124 | } | |
1da177e4 LT |
6125 | |
6126 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6127 | return -EINVAL; | |
6128 | ||
d953126a TM |
6129 | if (request->fl_type == F_UNLCK) { |
6130 | if (state != NULL) | |
6131 | return nfs4_proc_unlck(state, cmd, request); | |
6132 | return 0; | |
6133 | } | |
1da177e4 | 6134 | |
d953126a TM |
6135 | if (state == NULL) |
6136 | return -ENOLCK; | |
55725513 TM |
6137 | /* |
6138 | * Don't rely on the VFS having checked the file open mode, | |
6139 | * since it won't do this for flock() locks. | |
6140 | */ | |
f44106e2 | 6141 | switch (request->fl_type) { |
55725513 TM |
6142 | case F_RDLCK: |
6143 | if (!(filp->f_mode & FMODE_READ)) | |
6144 | return -EBADF; | |
6145 | break; | |
6146 | case F_WRLCK: | |
6147 | if (!(filp->f_mode & FMODE_WRITE)) | |
6148 | return -EBADF; | |
6149 | } | |
6150 | ||
1da177e4 LT |
6151 | do { |
6152 | status = nfs4_proc_setlk(state, cmd, request); | |
6153 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6154 | break; | |
6155 | timeout = nfs4_set_lock_task_retry(timeout); | |
6156 | status = -ERESTARTSYS; | |
6157 | if (signalled()) | |
6158 | break; | |
6159 | } while(status < 0); | |
1da177e4 LT |
6160 | return status; |
6161 | } | |
6162 | ||
db4f2e63 | 6163 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6164 | { |
6165 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6166 | int err; |
6167 | ||
6168 | err = nfs4_set_lock_state(state, fl); | |
6169 | if (err != 0) | |
db4f2e63 | 6170 | return err; |
4a706fa0 | 6171 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6172 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6173 | } |
6b3b5496 | 6174 | |
cf470c3e TM |
6175 | struct nfs_release_lockowner_data { |
6176 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6177 | struct nfs_server *server; |
cf470c3e | 6178 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6179 | struct nfs_release_lockowner_res res; |
60ea6812 | 6180 | unsigned long timestamp; |
cf470c3e TM |
6181 | }; |
6182 | ||
fbd4bfd1 CL |
6183 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6184 | { | |
6185 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6186 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6187 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6188 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6189 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6190 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6191 | } |
6192 | ||
6193 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6194 | { | |
6195 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6196 | struct nfs_server *server = data->server; |
6197 | ||
b7e63a10 | 6198 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6199 | |
6200 | switch (task->tk_status) { | |
6201 | case 0: | |
6202 | renew_lease(server, data->timestamp); | |
6203 | break; | |
6204 | case -NFS4ERR_STALE_CLIENTID: | |
6205 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6206 | nfs4_schedule_lease_recovery(server->nfs_client); |
6207 | break; | |
60ea6812 CL |
6208 | case -NFS4ERR_LEASE_MOVED: |
6209 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6210 | if (nfs4_async_handle_error(task, server, |
6211 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6212 | rpc_restart_call_prepare(task); |
6213 | } | |
fbd4bfd1 CL |
6214 | } |
6215 | ||
d3c7b7cc TM |
6216 | static void nfs4_release_lockowner_release(void *calldata) |
6217 | { | |
cf470c3e | 6218 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6219 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6220 | kfree(calldata); |
6221 | } | |
6222 | ||
17280175 | 6223 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6224 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6225 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6226 | .rpc_release = nfs4_release_lockowner_release, |
6227 | }; | |
6228 | ||
f1cdae87 JL |
6229 | static void |
6230 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6231 | { |
cf470c3e | 6232 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6233 | struct rpc_message msg = { |
6234 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6235 | }; | |
6236 | ||
6237 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6238 | return; |
fbd4bfd1 | 6239 | |
cf470c3e TM |
6240 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6241 | if (!data) | |
f1cdae87 | 6242 | return; |
cf470c3e | 6243 | data->lsp = lsp; |
5ae67c4f | 6244 | data->server = server; |
cf470c3e TM |
6245 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6246 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6247 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6248 | |
cf470c3e | 6249 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6250 | msg.rpc_resp = &data->res; |
6251 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6252 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6253 | } |
6254 | ||
aa1870af BF |
6255 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6256 | ||
d9a82a04 AG |
6257 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
6258 | struct dentry *dentry, const char *key, | |
64c2ce8b | 6259 | const void *buf, size_t buflen, |
d9a82a04 | 6260 | int flags) |
6b3b5496 | 6261 | { |
2b0143b5 | 6262 | return nfs4_proc_set_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6263 | } |
6264 | ||
d9a82a04 AG |
6265 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
6266 | struct dentry *dentry, const char *key, | |
6267 | void *buf, size_t buflen) | |
6b3b5496 | 6268 | { |
2b0143b5 | 6269 | return nfs4_proc_get_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6270 | } |
6271 | ||
764a5c6b | 6272 | static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry) |
6b3b5496 | 6273 | { |
764a5c6b | 6274 | return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry))); |
6b3b5496 BF |
6275 | } |
6276 | ||
c9bccef6 | 6277 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
c9bccef6 | 6278 | |
d9a82a04 AG |
6279 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
6280 | struct dentry *dentry, const char *key, | |
6281 | const void *buf, size_t buflen, | |
6282 | int flags) | |
c9bccef6 DQ |
6283 | { |
6284 | if (security_ismaclabel(key)) | |
6285 | return nfs4_set_security_label(dentry, buf, buflen); | |
6286 | ||
6287 | return -EOPNOTSUPP; | |
6288 | } | |
6289 | ||
d9a82a04 AG |
6290 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
6291 | struct dentry *dentry, const char *key, | |
6292 | void *buf, size_t buflen) | |
c9bccef6 DQ |
6293 | { |
6294 | if (security_ismaclabel(key)) | |
2b0143b5 | 6295 | return nfs4_get_security_label(d_inode(dentry), buf, buflen); |
c9bccef6 DQ |
6296 | return -EOPNOTSUPP; |
6297 | } | |
6298 | ||
c4803c49 AG |
6299 | static ssize_t |
6300 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
c9bccef6 | 6301 | { |
c4803c49 | 6302 | int len = 0; |
c9bccef6 | 6303 | |
c4803c49 AG |
6304 | if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) { |
6305 | len = security_inode_listsecurity(inode, list, list_len); | |
6306 | if (list_len && len > list_len) | |
6307 | return -ERANGE; | |
c9bccef6 DQ |
6308 | } |
6309 | return len; | |
6310 | } | |
6311 | ||
6312 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6313 | .prefix = XATTR_SECURITY_PREFIX, | |
c9bccef6 DQ |
6314 | .get = nfs4_xattr_get_nfs4_label, |
6315 | .set = nfs4_xattr_set_nfs4_label, | |
6316 | }; | |
c9bccef6 | 6317 | |
c4803c49 AG |
6318 | #else |
6319 | ||
6320 | static ssize_t | |
6321 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
6322 | { | |
6323 | return 0; | |
6324 | } | |
6325 | ||
6326 | #endif | |
c9bccef6 | 6327 | |
533eb461 AA |
6328 | /* |
6329 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6330 | */ | |
69aaaae1 TM |
6331 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6332 | { | |
533eb461 AA |
6333 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6334 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6335 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6336 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6337 | return; |
6338 | ||
6339 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6340 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6341 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6342 | fattr->nlink = 2; | |
6343 | } | |
6344 | ||
f05d147f BS |
6345 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6346 | const struct qstr *name, | |
6347 | struct nfs4_fs_locations *fs_locations, | |
6348 | struct page *page) | |
683b57b4 TM |
6349 | { |
6350 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6351 | u32 bitmask[3] = { |
361e624f | 6352 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6353 | }; |
6354 | struct nfs4_fs_locations_arg args = { | |
6355 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6356 | .name = name, |
683b57b4 TM |
6357 | .page = page, |
6358 | .bitmask = bitmask, | |
6359 | }; | |
22958463 BH |
6360 | struct nfs4_fs_locations_res res = { |
6361 | .fs_locations = fs_locations, | |
6362 | }; | |
683b57b4 TM |
6363 | struct rpc_message msg = { |
6364 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6365 | .rpc_argp = &args, | |
22958463 | 6366 | .rpc_resp = &res, |
683b57b4 TM |
6367 | }; |
6368 | int status; | |
6369 | ||
3110ff80 | 6370 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6371 | |
6372 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6373 | * is not supported */ | |
6374 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6375 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6376 | else | |
6377 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6378 | ||
c228fd3a | 6379 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6380 | fs_locations->server = server; |
830b8e33 | 6381 | fs_locations->nlocations = 0; |
f05d147f | 6382 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6383 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6384 | return status; |
6385 | } | |
6386 | ||
f05d147f BS |
6387 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6388 | const struct qstr *name, | |
6389 | struct nfs4_fs_locations *fs_locations, | |
6390 | struct page *page) | |
db0a9593 BS |
6391 | { |
6392 | struct nfs4_exception exception = { }; | |
6393 | int err; | |
6394 | do { | |
078ea3df TM |
6395 | err = _nfs4_proc_fs_locations(client, dir, name, |
6396 | fs_locations, page); | |
6397 | trace_nfs4_get_fs_locations(dir, name, err); | |
6398 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6399 | &exception); |
6400 | } while (exception.retry); | |
6401 | return err; | |
6402 | } | |
6403 | ||
b03d735b CL |
6404 | /* |
6405 | * This operation also signals the server that this client is | |
6406 | * performing migration recovery. The server can stop returning | |
6407 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6408 | * appended to this compound to identify the client ID which is | |
6409 | * performing recovery. | |
6410 | */ | |
6411 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6412 | struct nfs4_fs_locations *locations, | |
6413 | struct page *page, struct rpc_cred *cred) | |
6414 | { | |
6415 | struct nfs_server *server = NFS_SERVER(inode); | |
6416 | struct rpc_clnt *clnt = server->client; | |
6417 | u32 bitmask[2] = { | |
6418 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6419 | }; | |
6420 | struct nfs4_fs_locations_arg args = { | |
6421 | .clientid = server->nfs_client->cl_clientid, | |
6422 | .fh = NFS_FH(inode), | |
6423 | .page = page, | |
6424 | .bitmask = bitmask, | |
6425 | .migration = 1, /* skip LOOKUP */ | |
6426 | .renew = 1, /* append RENEW */ | |
6427 | }; | |
6428 | struct nfs4_fs_locations_res res = { | |
6429 | .fs_locations = locations, | |
6430 | .migration = 1, | |
6431 | .renew = 1, | |
6432 | }; | |
6433 | struct rpc_message msg = { | |
6434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6435 | .rpc_argp = &args, | |
6436 | .rpc_resp = &res, | |
6437 | .rpc_cred = cred, | |
6438 | }; | |
6439 | unsigned long now = jiffies; | |
6440 | int status; | |
6441 | ||
6442 | nfs_fattr_init(&locations->fattr); | |
6443 | locations->server = server; | |
6444 | locations->nlocations = 0; | |
6445 | ||
6446 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6447 | nfs4_set_sequence_privileged(&args.seq_args); | |
6448 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6449 | &args.seq_args, &res.seq_res); | |
6450 | if (status) | |
6451 | return status; | |
6452 | ||
6453 | renew_lease(server, now); | |
6454 | return 0; | |
6455 | } | |
6456 | ||
6457 | #ifdef CONFIG_NFS_V4_1 | |
6458 | ||
6459 | /* | |
6460 | * This operation also signals the server that this client is | |
6461 | * performing migration recovery. The server can stop asserting | |
6462 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6463 | * performing this operation is identified in the SEQUENCE | |
6464 | * operation in this compound. | |
6465 | * | |
6466 | * When the client supports GETATTR(fs_locations_info), it can | |
6467 | * be plumbed in here. | |
6468 | */ | |
6469 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6470 | struct nfs4_fs_locations *locations, | |
6471 | struct page *page, struct rpc_cred *cred) | |
6472 | { | |
6473 | struct nfs_server *server = NFS_SERVER(inode); | |
6474 | struct rpc_clnt *clnt = server->client; | |
6475 | u32 bitmask[2] = { | |
6476 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6477 | }; | |
6478 | struct nfs4_fs_locations_arg args = { | |
6479 | .fh = NFS_FH(inode), | |
6480 | .page = page, | |
6481 | .bitmask = bitmask, | |
6482 | .migration = 1, /* skip LOOKUP */ | |
6483 | }; | |
6484 | struct nfs4_fs_locations_res res = { | |
6485 | .fs_locations = locations, | |
6486 | .migration = 1, | |
6487 | }; | |
6488 | struct rpc_message msg = { | |
6489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6490 | .rpc_argp = &args, | |
6491 | .rpc_resp = &res, | |
6492 | .rpc_cred = cred, | |
6493 | }; | |
6494 | int status; | |
6495 | ||
6496 | nfs_fattr_init(&locations->fattr); | |
6497 | locations->server = server; | |
6498 | locations->nlocations = 0; | |
6499 | ||
6500 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6501 | nfs4_set_sequence_privileged(&args.seq_args); | |
6502 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6503 | &args.seq_args, &res.seq_res); | |
6504 | if (status == NFS4_OK && | |
6505 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6506 | status = -NFS4ERR_LEASE_MOVED; | |
6507 | return status; | |
6508 | } | |
6509 | ||
6510 | #endif /* CONFIG_NFS_V4_1 */ | |
6511 | ||
6512 | /** | |
6513 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6514 | * @inode: inode on FSID that is migrating | |
6515 | * @locations: result of query | |
6516 | * @page: buffer | |
6517 | * @cred: credential to use for this operation | |
6518 | * | |
6519 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6520 | * operation failed, or a negative errno if a local error occurred. | |
6521 | * | |
6522 | * On success, "locations" is filled in, but if the server has | |
6523 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6524 | * asserted. | |
6525 | * | |
6526 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6527 | * from this client that require migration recovery. | |
6528 | */ | |
6529 | int nfs4_proc_get_locations(struct inode *inode, | |
6530 | struct nfs4_fs_locations *locations, | |
6531 | struct page *page, struct rpc_cred *cred) | |
6532 | { | |
6533 | struct nfs_server *server = NFS_SERVER(inode); | |
6534 | struct nfs_client *clp = server->nfs_client; | |
6535 | const struct nfs4_mig_recovery_ops *ops = | |
6536 | clp->cl_mvops->mig_recovery_ops; | |
6537 | struct nfs4_exception exception = { }; | |
6538 | int status; | |
6539 | ||
6540 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6541 | (unsigned long long)server->fsid.major, | |
6542 | (unsigned long long)server->fsid.minor, | |
6543 | clp->cl_hostname); | |
6544 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6545 | ||
6546 | do { | |
6547 | status = ops->get_locations(inode, locations, page, cred); | |
6548 | if (status != -NFS4ERR_DELAY) | |
6549 | break; | |
6550 | nfs4_handle_exception(server, status, &exception); | |
6551 | } while (exception.retry); | |
6552 | return status; | |
6553 | } | |
6554 | ||
44c99933 CL |
6555 | /* |
6556 | * This operation also signals the server that this client is | |
6557 | * performing "lease moved" recovery. The server can stop | |
6558 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6559 | * is appended to this compound to identify the client ID which is | |
6560 | * performing recovery. | |
6561 | */ | |
6562 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6563 | { | |
6564 | struct nfs_server *server = NFS_SERVER(inode); | |
6565 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6566 | struct rpc_clnt *clnt = server->client; | |
6567 | struct nfs4_fsid_present_arg args = { | |
6568 | .fh = NFS_FH(inode), | |
6569 | .clientid = clp->cl_clientid, | |
6570 | .renew = 1, /* append RENEW */ | |
6571 | }; | |
6572 | struct nfs4_fsid_present_res res = { | |
6573 | .renew = 1, | |
6574 | }; | |
6575 | struct rpc_message msg = { | |
6576 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6577 | .rpc_argp = &args, | |
6578 | .rpc_resp = &res, | |
6579 | .rpc_cred = cred, | |
6580 | }; | |
6581 | unsigned long now = jiffies; | |
6582 | int status; | |
6583 | ||
6584 | res.fh = nfs_alloc_fhandle(); | |
6585 | if (res.fh == NULL) | |
6586 | return -ENOMEM; | |
6587 | ||
6588 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6589 | nfs4_set_sequence_privileged(&args.seq_args); | |
6590 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6591 | &args.seq_args, &res.seq_res); | |
6592 | nfs_free_fhandle(res.fh); | |
6593 | if (status) | |
6594 | return status; | |
6595 | ||
6596 | do_renew_lease(clp, now); | |
6597 | return 0; | |
6598 | } | |
6599 | ||
6600 | #ifdef CONFIG_NFS_V4_1 | |
6601 | ||
6602 | /* | |
6603 | * This operation also signals the server that this client is | |
6604 | * performing "lease moved" recovery. The server can stop asserting | |
6605 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6606 | * this operation is identified in the SEQUENCE operation in this | |
6607 | * compound. | |
6608 | */ | |
6609 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6610 | { | |
6611 | struct nfs_server *server = NFS_SERVER(inode); | |
6612 | struct rpc_clnt *clnt = server->client; | |
6613 | struct nfs4_fsid_present_arg args = { | |
6614 | .fh = NFS_FH(inode), | |
6615 | }; | |
6616 | struct nfs4_fsid_present_res res = { | |
6617 | }; | |
6618 | struct rpc_message msg = { | |
6619 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6620 | .rpc_argp = &args, | |
6621 | .rpc_resp = &res, | |
6622 | .rpc_cred = cred, | |
6623 | }; | |
6624 | int status; | |
6625 | ||
6626 | res.fh = nfs_alloc_fhandle(); | |
6627 | if (res.fh == NULL) | |
6628 | return -ENOMEM; | |
6629 | ||
6630 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6631 | nfs4_set_sequence_privileged(&args.seq_args); | |
6632 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6633 | &args.seq_args, &res.seq_res); | |
6634 | nfs_free_fhandle(res.fh); | |
6635 | if (status == NFS4_OK && | |
6636 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6637 | status = -NFS4ERR_LEASE_MOVED; | |
6638 | return status; | |
6639 | } | |
6640 | ||
6641 | #endif /* CONFIG_NFS_V4_1 */ | |
6642 | ||
6643 | /** | |
6644 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6645 | * @inode: inode on FSID to check | |
6646 | * @cred: credential to use for this operation | |
6647 | * | |
6648 | * Server indicates whether the FSID is present, moved, or not | |
6649 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6650 | * condition for this client ID. | |
6651 | * | |
6652 | * Returns NFS4_OK if the FSID is present on this server, | |
6653 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6654 | * NFS4ERR code if some error occurred on the server, or a | |
6655 | * negative errno if a local failure occurred. | |
6656 | */ | |
6657 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6658 | { | |
6659 | struct nfs_server *server = NFS_SERVER(inode); | |
6660 | struct nfs_client *clp = server->nfs_client; | |
6661 | const struct nfs4_mig_recovery_ops *ops = | |
6662 | clp->cl_mvops->mig_recovery_ops; | |
6663 | struct nfs4_exception exception = { }; | |
6664 | int status; | |
6665 | ||
6666 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6667 | (unsigned long long)server->fsid.major, | |
6668 | (unsigned long long)server->fsid.minor, | |
6669 | clp->cl_hostname); | |
6670 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6671 | ||
6672 | do { | |
6673 | status = ops->fsid_present(inode, cred); | |
6674 | if (status != -NFS4ERR_DELAY) | |
6675 | break; | |
6676 | nfs4_handle_exception(server, status, &exception); | |
6677 | } while (exception.retry); | |
6678 | return status; | |
6679 | } | |
6680 | ||
5ec16a85 | 6681 | /** |
a5250def WAA |
6682 | * If 'use_integrity' is true and the state managment nfs_client |
6683 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6684 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6685 | * Considerations sections. Otherwise, just use the user cred with the | |
6686 | * filesystem's rpc_client. | |
5ec16a85 | 6687 | */ |
a5250def | 6688 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6689 | { |
6690 | int status; | |
6691 | struct nfs4_secinfo_arg args = { | |
6692 | .dir_fh = NFS_FH(dir), | |
6693 | .name = name, | |
6694 | }; | |
6695 | struct nfs4_secinfo_res res = { | |
6696 | .flavors = flavors, | |
6697 | }; | |
6698 | struct rpc_message msg = { | |
6699 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6700 | .rpc_argp = &args, | |
6701 | .rpc_resp = &res, | |
6702 | }; | |
a5250def | 6703 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6704 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6705 | |
6706 | if (use_integrity) { | |
6707 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6708 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6709 | msg.rpc_cred = cred; | |
a5250def | 6710 | } |
5a5ea0d4 BS |
6711 | |
6712 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6713 | |
6714 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6715 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6716 | ||
a5250def WAA |
6717 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6718 | &res.seq_res, 0); | |
5a5ea0d4 | 6719 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6720 | |
7cb852df WAA |
6721 | if (cred) |
6722 | put_rpccred(cred); | |
a5250def | 6723 | |
5a5ea0d4 BS |
6724 | return status; |
6725 | } | |
6726 | ||
72de53ec BS |
6727 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6728 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6729 | { |
6730 | struct nfs4_exception exception = { }; | |
6731 | int err; | |
6732 | do { | |
a5250def WAA |
6733 | err = -NFS4ERR_WRONGSEC; |
6734 | ||
6735 | /* try to use integrity protection with machine cred */ | |
6736 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6737 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6738 | ||
6739 | /* | |
6740 | * if unable to use integrity protection, or SECINFO with | |
6741 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6742 | * disallowed by spec, but exists in deployed servers) use | |
6743 | * the current filesystem's rpc_client and the user cred. | |
6744 | */ | |
6745 | if (err == -NFS4ERR_WRONGSEC) | |
6746 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6747 | ||
078ea3df TM |
6748 | trace_nfs4_secinfo(dir, name, err); |
6749 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6750 | &exception); |
6751 | } while (exception.retry); | |
6752 | return err; | |
6753 | } | |
6754 | ||
557134a3 | 6755 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6756 | /* |
6757 | * Check the exchange flags returned by the server for invalid flags, having | |
6758 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6759 | * DS flags set. | |
6760 | */ | |
6761 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6762 | { | |
6763 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6764 | goto out_inval; | |
6765 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6766 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6767 | goto out_inval; | |
6768 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6769 | goto out_inval; | |
6770 | return NFS_OK; | |
6771 | out_inval: | |
6772 | return -NFS4ERR_INVAL; | |
6773 | } | |
6774 | ||
78fe0f41 | 6775 | static bool |
79d4e1f0 CL |
6776 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6777 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6778 | { |
6779 | if (a->server_scope_sz == b->server_scope_sz && | |
6780 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6781 | return true; | |
6782 | ||
6783 | return false; | |
6784 | } | |
6785 | ||
02a95dee AA |
6786 | static void |
6787 | nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata) | |
6788 | { | |
6789 | } | |
6790 | ||
6791 | static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = { | |
6792 | .rpc_call_done = &nfs4_bind_one_conn_to_session_done, | |
6793 | }; | |
6794 | ||
7c44f1ae | 6795 | /* |
d9ddbf5d | 6796 | * nfs4_proc_bind_one_conn_to_session() |
7c44f1ae WAA |
6797 | * |
6798 | * The 4.1 client currently uses the same TCP connection for the | |
6799 | * fore and backchannel. | |
6800 | */ | |
d9ddbf5d TM |
6801 | static |
6802 | int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt, | |
6803 | struct rpc_xprt *xprt, | |
6804 | struct nfs_client *clp, | |
6805 | struct rpc_cred *cred) | |
7c44f1ae WAA |
6806 | { |
6807 | int status; | |
71a097c6 TM |
6808 | struct nfs41_bind_conn_to_session_args args = { |
6809 | .client = clp, | |
6810 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6811 | }; | |
7c44f1ae WAA |
6812 | struct nfs41_bind_conn_to_session_res res; |
6813 | struct rpc_message msg = { | |
6814 | .rpc_proc = | |
6815 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6816 | .rpc_argp = &args, |
7c44f1ae | 6817 | .rpc_resp = &res, |
2cf047c9 | 6818 | .rpc_cred = cred, |
7c44f1ae | 6819 | }; |
d9ddbf5d TM |
6820 | struct rpc_task_setup task_setup_data = { |
6821 | .rpc_client = clnt, | |
6822 | .rpc_xprt = xprt, | |
02a95dee | 6823 | .callback_ops = &nfs4_bind_one_conn_to_session_ops, |
d9ddbf5d TM |
6824 | .rpc_message = &msg, |
6825 | .flags = RPC_TASK_TIMEOUT, | |
6826 | }; | |
6827 | struct rpc_task *task; | |
7c44f1ae WAA |
6828 | |
6829 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6830 | |
71a097c6 TM |
6831 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6832 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6833 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae | 6834 | |
d9ddbf5d TM |
6835 | /* Do not set the backchannel flag unless this is clnt->cl_xprt */ |
6836 | if (xprt != rcu_access_pointer(clnt->cl_xprt)) | |
6837 | args.dir = NFS4_CDFC4_FORE; | |
6838 | ||
6839 | task = rpc_run_task(&task_setup_data); | |
6840 | if (!IS_ERR(task)) { | |
6841 | status = task->tk_status; | |
6842 | rpc_put_task(task); | |
6843 | } else | |
6844 | status = PTR_ERR(task); | |
c6d01c6f | 6845 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6846 | if (status == 0) { |
71a097c6 | 6847 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6848 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6849 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6850 | status = -EIO; | |
71a097c6 | 6851 | goto out; |
7c44f1ae | 6852 | } |
71a097c6 | 6853 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6854 | dprintk("NFS: %s: Unexpected direction from server\n", |
6855 | __func__); | |
6856 | status = -EIO; | |
71a097c6 | 6857 | goto out; |
7c44f1ae | 6858 | } |
71a097c6 | 6859 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6860 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6861 | __func__); | |
6862 | status = -EIO; | |
71a097c6 | 6863 | goto out; |
7c44f1ae WAA |
6864 | } |
6865 | } | |
7c44f1ae WAA |
6866 | out: |
6867 | dprintk("<-- %s status= %d\n", __func__, status); | |
6868 | return status; | |
6869 | } | |
6870 | ||
d9ddbf5d TM |
6871 | struct rpc_bind_conn_calldata { |
6872 | struct nfs_client *clp; | |
6873 | struct rpc_cred *cred; | |
6874 | }; | |
6875 | ||
6876 | static int | |
6877 | nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt, | |
6878 | struct rpc_xprt *xprt, | |
6879 | void *calldata) | |
6880 | { | |
6881 | struct rpc_bind_conn_calldata *p = calldata; | |
6882 | ||
6883 | return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred); | |
6884 | } | |
6885 | ||
6886 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) | |
6887 | { | |
6888 | struct rpc_bind_conn_calldata data = { | |
6889 | .clp = clp, | |
6890 | .cred = cred, | |
6891 | }; | |
6892 | return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient, | |
6893 | nfs4_proc_bind_conn_to_session_callback, &data); | |
6894 | } | |
6895 | ||
99fe60d0 | 6896 | /* |
fa940720 WAA |
6897 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6898 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6899 | */ |
6900 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6901 | .how = SP4_MACH_CRED, | |
6902 | .enforce.u.words = { | |
6903 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6904 | 1 << (OP_EXCHANGE_ID - 32) | | |
6905 | 1 << (OP_CREATE_SESSION - 32) | | |
6906 | 1 << (OP_DESTROY_SESSION - 32) | | |
6907 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6908 | }, |
6909 | .allow.u.words = { | |
6910 | [0] = 1 << (OP_CLOSE) | | |
99ade3c7 | 6911 | 1 << (OP_OPEN_DOWNGRADE) | |
a0279625 | 6912 | 1 << (OP_LOCKU) | |
99ade3c7 | 6913 | 1 << (OP_DELEGRETURN) | |
a0279625 | 6914 | 1 << (OP_COMMIT), |
8b5bee2e | 6915 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 | 6916 | 1 << (OP_SECINFO_NO_NAME - 32) | |
99ade3c7 | 6917 | 1 << (OP_LAYOUTRETURN - 32) | |
3787d506 | 6918 | 1 << (OP_TEST_STATEID - 32) | |
a0279625 WAA |
6919 | 1 << (OP_FREE_STATEID - 32) | |
6920 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6921 | } |
6922 | }; | |
6923 | ||
6924 | /* | |
6925 | * Select the state protection mode for client `clp' given the server results | |
6926 | * from exchange_id in `sp'. | |
99fe60d0 | 6927 | * |
2031cd1a WAA |
6928 | * Returns 0 on success, negative errno otherwise. |
6929 | */ | |
6930 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6931 | struct nfs41_state_protection *sp) | |
6932 | { | |
6933 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6934 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6935 | 1 << (OP_EXCHANGE_ID - 32) | | |
6936 | 1 << (OP_CREATE_SESSION - 32) | | |
6937 | 1 << (OP_DESTROY_SESSION - 32) | | |
6938 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6939 | }; | |
6940 | unsigned int i; | |
6941 | ||
6942 | if (sp->how == SP4_MACH_CRED) { | |
6943 | /* Print state protect result */ | |
6944 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6945 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6946 | if (test_bit(i, sp->enforce.u.longs)) | |
6947 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6948 | if (test_bit(i, sp->allow.u.longs)) | |
6949 | dfprintk(MOUNT, " allow op %d\n", i); | |
6950 | } | |
6951 | ||
6952 | /* make sure nothing is on enforce list that isn't supported */ | |
6953 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6954 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6955 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6956 | return -EINVAL; | |
6957 | } | |
6958 | } | |
6959 | ||
6960 | /* | |
6961 | * Minimal mode - state operations are allowed to use machine | |
6962 | * credential. Note this already happens by default, so the | |
6963 | * client doesn't have to do anything more than the negotiation. | |
6964 | * | |
6965 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6966 | * we're already using the machine cred for exchange_id | |
6967 | * and will never use a different cred. | |
6968 | */ | |
6969 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6970 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6971 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6972 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6973 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6974 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6975 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6976 | } else { | |
6977 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6978 | return -EINVAL; | |
6979 | } | |
fa940720 WAA |
6980 | |
6981 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
99ade3c7 AE |
6982 | test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) && |
6983 | test_bit(OP_DELEGRETURN, sp->allow.u.longs) && | |
fa940720 WAA |
6984 | test_bit(OP_LOCKU, sp->allow.u.longs)) { |
6985 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6986 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6987 | } | |
8b5bee2e | 6988 | |
99ade3c7 AE |
6989 | if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) { |
6990 | dfprintk(MOUNT, " pnfs cleanup mode enabled\n"); | |
6991 | set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
6992 | &clp->cl_sp4_flags); | |
6993 | } | |
6994 | ||
8b5bee2e WAA |
6995 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && |
6996 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6997 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6998 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6999 | } | |
3787d506 WAA |
7000 | |
7001 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
7002 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
7003 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
7004 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
7005 | } | |
8c21c62c WAA |
7006 | |
7007 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
7008 | dfprintk(MOUNT, " write mode enabled\n"); | |
7009 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
7010 | } | |
7011 | ||
7012 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
7013 | dfprintk(MOUNT, " commit mode enabled\n"); | |
7014 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
7015 | } | |
2031cd1a WAA |
7016 | } |
7017 | ||
7018 | return 0; | |
7019 | } | |
7020 | ||
7021 | /* | |
7022 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 7023 | * |
2031cd1a | 7024 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 7025 | */ |
2031cd1a WAA |
7026 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
7027 | u32 sp4_how) | |
99fe60d0 BH |
7028 | { |
7029 | nfs4_verifier verifier; | |
7030 | struct nfs41_exchange_id_args args = { | |
cd93710e | 7031 | .verifier = &verifier, |
99fe60d0 | 7032 | .client = clp, |
cd3fadec | 7033 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 7034 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
7035 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
7036 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
7037 | #else | |
7038 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
7039 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
7040 | #endif | |
99fe60d0 BH |
7041 | }; |
7042 | struct nfs41_exchange_id_res res = { | |
32b01310 | 7043 | 0 |
99fe60d0 BH |
7044 | }; |
7045 | int status; | |
7046 | struct rpc_message msg = { | |
7047 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
7048 | .rpc_argp = &args, | |
7049 | .rpc_resp = &res, | |
7050 | .rpc_cred = cred, | |
7051 | }; | |
99fe60d0 | 7052 | |
f092075d | 7053 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
7054 | |
7055 | status = nfs4_init_uniform_client_string(clp); | |
7056 | if (status) | |
3a6bb738 | 7057 | goto out; |
3a6bb738 JL |
7058 | |
7059 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 7060 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 7061 | clp->cl_owner_id); |
99fe60d0 | 7062 | |
acdeb69d | 7063 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 7064 | GFP_NOFS); |
acdeb69d | 7065 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
7066 | status = -ENOMEM; |
7067 | goto out; | |
7068 | } | |
78fe0f41 | 7069 | |
79d4e1f0 | 7070 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 7071 | GFP_NOFS); |
177313f1 | 7072 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 7073 | status = -ENOMEM; |
acdeb69d | 7074 | goto out_server_owner; |
abe9a6d5 | 7075 | } |
78fe0f41 | 7076 | |
bbafffd2 | 7077 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 7078 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
7079 | status = -ENOMEM; |
7080 | goto out_server_scope; | |
7081 | } | |
7082 | ||
2031cd1a WAA |
7083 | switch (sp4_how) { |
7084 | case SP4_NONE: | |
7085 | args.state_protect.how = SP4_NONE; | |
7086 | break; | |
7087 | ||
7088 | case SP4_MACH_CRED: | |
7089 | args.state_protect = nfs4_sp4_mach_cred_request; | |
7090 | break; | |
7091 | ||
7092 | default: | |
7093 | /* unsupported! */ | |
7094 | WARN_ON_ONCE(1); | |
7095 | status = -EINVAL; | |
6b55970b | 7096 | goto out_impl_id; |
2031cd1a WAA |
7097 | } |
7098 | ||
1bd714f2 | 7099 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7100 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 7101 | if (status == 0) |
32b01310 | 7102 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 7103 | |
2031cd1a WAA |
7104 | if (status == 0) |
7105 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
7106 | ||
acdeb69d | 7107 | if (status == 0) { |
32b01310 | 7108 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
7109 | clp->cl_exchange_flags = res.flags; |
7110 | /* Client ID is not confirmed */ | |
7111 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7112 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7113 | &clp->cl_session->session_state); | |
32b01310 | 7114 | clp->cl_seqid = res.seqid; |
e11259f9 | 7115 | } |
32b01310 | 7116 | |
acdeb69d CL |
7117 | kfree(clp->cl_serverowner); |
7118 | clp->cl_serverowner = res.server_owner; | |
7119 | res.server_owner = NULL; | |
78fe0f41 | 7120 | |
7d2ed9ac | 7121 | /* use the most recent implementation id */ |
59155546 CL |
7122 | kfree(clp->cl_implid); |
7123 | clp->cl_implid = res.impl_id; | |
6b55970b | 7124 | res.impl_id = NULL; |
7d2ed9ac | 7125 | |
177313f1 | 7126 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7127 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7128 | res.server_scope)) { |
7129 | dprintk("%s: server_scope mismatch detected\n", | |
7130 | __func__); | |
7131 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7132 | kfree(clp->cl_serverscope); |
7133 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7134 | } |
7135 | ||
177313f1 | 7136 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7137 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7138 | res.server_scope = NULL; |
abe9a6d5 | 7139 | } |
6b55970b | 7140 | } |
7d2ed9ac | 7141 | |
6b55970b KM |
7142 | out_impl_id: |
7143 | kfree(res.impl_id); | |
7d2ed9ac | 7144 | out_server_scope: |
abe9a6d5 | 7145 | kfree(res.server_scope); |
6b55970b KM |
7146 | out_server_owner: |
7147 | kfree(res.server_owner); | |
abe9a6d5 | 7148 | out: |
177313f1 | 7149 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7150 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7151 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7152 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7153 | clp->cl_implid->date.seconds, |
7154 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7155 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7156 | return status; |
7157 | } | |
7158 | ||
2031cd1a WAA |
7159 | /* |
7160 | * nfs4_proc_exchange_id() | |
7161 | * | |
7162 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7163 | * | |
7164 | * Since the clientid has expired, all compounds using sessions | |
7165 | * associated with the stale clientid will be returning | |
7166 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7167 | * be in some phase of session reset. | |
7168 | * | |
7169 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7170 | */ | |
7171 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7172 | { | |
7173 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7174 | int status; | |
7175 | ||
7176 | /* try SP4_MACH_CRED if krb5i/p */ | |
7177 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7178 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7179 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7180 | if (!status) | |
7181 | return 0; | |
7182 | } | |
7183 | ||
7184 | /* try SP4_NONE */ | |
7185 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7186 | } | |
7187 | ||
66245539 TM |
7188 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7189 | struct rpc_cred *cred) | |
7190 | { | |
7191 | struct rpc_message msg = { | |
7192 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7193 | .rpc_argp = clp, | |
7194 | .rpc_cred = cred, | |
7195 | }; | |
7196 | int status; | |
7197 | ||
7198 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7199 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7200 | if (status) |
02c67525 | 7201 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7202 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7203 | return status; | |
7204 | } | |
7205 | ||
7206 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7207 | struct rpc_cred *cred) | |
7208 | { | |
7209 | unsigned int loop; | |
7210 | int ret; | |
7211 | ||
7212 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7213 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7214 | switch (ret) { | |
7215 | case -NFS4ERR_DELAY: | |
7216 | case -NFS4ERR_CLIENTID_BUSY: | |
7217 | ssleep(1); | |
7218 | break; | |
7219 | default: | |
7220 | return ret; | |
7221 | } | |
7222 | } | |
7223 | return 0; | |
7224 | } | |
7225 | ||
7226 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7227 | { | |
7228 | struct rpc_cred *cred; | |
7229 | int ret = 0; | |
7230 | ||
7231 | if (clp->cl_mvops->minor_version < 1) | |
7232 | goto out; | |
7233 | if (clp->cl_exchange_flags == 0) | |
7234 | goto out; | |
05f4c350 CL |
7235 | if (clp->cl_preserve_clid) |
7236 | goto out; | |
73d8bde5 | 7237 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7238 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7239 | if (cred) | |
7240 | put_rpccred(cred); | |
7241 | switch (ret) { | |
7242 | case 0: | |
7243 | case -NFS4ERR_STALE_CLIENTID: | |
7244 | clp->cl_exchange_flags = 0; | |
7245 | } | |
7246 | out: | |
7247 | return ret; | |
7248 | } | |
7249 | ||
2050f0cc AA |
7250 | struct nfs4_get_lease_time_data { |
7251 | struct nfs4_get_lease_time_args *args; | |
7252 | struct nfs4_get_lease_time_res *res; | |
7253 | struct nfs_client *clp; | |
7254 | }; | |
7255 | ||
7256 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7257 | void *calldata) | |
7258 | { | |
2050f0cc AA |
7259 | struct nfs4_get_lease_time_data *data = |
7260 | (struct nfs4_get_lease_time_data *)calldata; | |
7261 | ||
7262 | dprintk("--> %s\n", __func__); | |
7263 | /* just setup sequence, do not trigger session recovery | |
7264 | since we're invoked within one */ | |
d9afbd1b TM |
7265 | nfs41_setup_sequence(data->clp->cl_session, |
7266 | &data->args->la_seq_args, | |
7267 | &data->res->lr_seq_res, | |
7268 | task); | |
2050f0cc AA |
7269 | dprintk("<-- %s\n", __func__); |
7270 | } | |
7271 | ||
7272 | /* | |
7273 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7274 | * from sequence operation or clientid errors. | |
7275 | */ | |
7276 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7277 | { | |
7278 | struct nfs4_get_lease_time_data *data = | |
7279 | (struct nfs4_get_lease_time_data *)calldata; | |
7280 | ||
7281 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7282 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7283 | return; | |
2050f0cc AA |
7284 | switch (task->tk_status) { |
7285 | case -NFS4ERR_DELAY: | |
7286 | case -NFS4ERR_GRACE: | |
7287 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7288 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7289 | task->tk_status = 0; | |
a8a4ae3a AA |
7290 | /* fall through */ |
7291 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7292 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7293 | return; |
7294 | } | |
2050f0cc AA |
7295 | dprintk("<-- %s\n", __func__); |
7296 | } | |
7297 | ||
17280175 | 7298 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7299 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7300 | .rpc_call_done = nfs4_get_lease_time_done, | |
7301 | }; | |
7302 | ||
7303 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7304 | { | |
7305 | struct rpc_task *task; | |
7306 | struct nfs4_get_lease_time_args args; | |
7307 | struct nfs4_get_lease_time_res res = { | |
7308 | .lr_fsinfo = fsinfo, | |
7309 | }; | |
7310 | struct nfs4_get_lease_time_data data = { | |
7311 | .args = &args, | |
7312 | .res = &res, | |
7313 | .clp = clp, | |
7314 | }; | |
7315 | struct rpc_message msg = { | |
7316 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7317 | .rpc_argp = &args, | |
7318 | .rpc_resp = &res, | |
7319 | }; | |
7320 | struct rpc_task_setup task_setup = { | |
7321 | .rpc_client = clp->cl_rpcclient, | |
7322 | .rpc_message = &msg, | |
7323 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7324 | .callback_data = &data, |
7325 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7326 | }; |
7327 | int status; | |
7328 | ||
a9c92d6b | 7329 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7330 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7331 | dprintk("--> %s\n", __func__); |
7332 | task = rpc_run_task(&task_setup); | |
7333 | ||
7334 | if (IS_ERR(task)) | |
7335 | status = PTR_ERR(task); | |
7336 | else { | |
7337 | status = task->tk_status; | |
7338 | rpc_put_task(task); | |
7339 | } | |
7340 | dprintk("<-- %s return %d\n", __func__, status); | |
7341 | ||
7342 | return status; | |
7343 | } | |
7344 | ||
fc931582 AA |
7345 | /* |
7346 | * Initialize the values to be used by the client in CREATE_SESSION | |
7347 | * If nfs4_init_session set the fore channel request and response sizes, | |
7348 | * use them. | |
7349 | * | |
7350 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7351 | * always set csa_cachethis to FALSE because the current implementation | |
7352 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7353 | */ | |
7354 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7355 | { | |
18aad3d5 AA |
7356 | unsigned int max_rqst_sz, max_resp_sz; |
7357 | ||
7358 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7359 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7360 | |
fc931582 | 7361 | /* Fore channel attributes */ |
18aad3d5 AA |
7362 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7363 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7364 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7365 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7366 | |
7367 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7368 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7369 | __func__, |
7370 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7371 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7372 | |
7373 | /* Back channel attributes */ | |
fc931582 AA |
7374 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7375 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7376 | args->bc_attrs.max_resp_sz_cached = 0; | |
7377 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
f4f58ed1 | 7378 | args->bc_attrs.max_reqs = NFS41_BC_MAX_CALLBACKS; |
fc931582 AA |
7379 | |
7380 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7381 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7382 | __func__, | |
7383 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7384 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7385 | args->bc_attrs.max_reqs); | |
7386 | } | |
7387 | ||
79969dd1 TM |
7388 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7389 | struct nfs41_create_session_res *res) | |
8d35301d | 7390 | { |
43c2e885 | 7391 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7392 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7393 | |
43c2e885 BF |
7394 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7395 | return -EINVAL; | |
7396 | /* | |
7397 | * Our requested max_ops is the minimum we need; we're not | |
7398 | * prepared to break up compounds into smaller pieces than that. | |
7399 | * So, no point even trying to continue if the server won't | |
7400 | * cooperate: | |
7401 | */ | |
7402 | if (rcvd->max_ops < sent->max_ops) | |
7403 | return -EINVAL; | |
7404 | if (rcvd->max_reqs == 0) | |
7405 | return -EINVAL; | |
b4b9a0c1 VG |
7406 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7407 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7408 | return 0; |
8d35301d AA |
7409 | } |
7410 | ||
79969dd1 TM |
7411 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7412 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7413 | { |
7414 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7415 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7416 | |
b1c0df5f TM |
7417 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7418 | goto out; | |
43c2e885 BF |
7419 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7420 | return -EINVAL; | |
7421 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7422 | return -EINVAL; | |
7423 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7424 | return -EINVAL; | |
7425 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7426 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7427 | return -EINVAL; |
b4b9a0c1 | 7428 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7429 | return -EINVAL; |
b1c0df5f | 7430 | out: |
43c2e885 BF |
7431 | return 0; |
7432 | } | |
8d35301d | 7433 | |
8d35301d | 7434 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7435 | struct nfs41_create_session_res *res) |
8d35301d | 7436 | { |
43c2e885 | 7437 | int ret; |
8d35301d | 7438 | |
79969dd1 | 7439 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7440 | if (ret) |
7441 | return ret; | |
79969dd1 TM |
7442 | return nfs4_verify_back_channel_attrs(args, res); |
7443 | } | |
7444 | ||
7445 | static void nfs4_update_session(struct nfs4_session *session, | |
7446 | struct nfs41_create_session_res *res) | |
7447 | { | |
7448 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7449 | /* Mark client id and session as being confirmed */ |
7450 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7451 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7452 | session->flags = res->flags; |
7453 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7454 | if (res->flags & SESSION4_BACK_CHAN) |
7455 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7456 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7457 | } |
7458 | ||
848f5bda TM |
7459 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7460 | struct rpc_cred *cred) | |
fc931582 AA |
7461 | { |
7462 | struct nfs4_session *session = clp->cl_session; | |
7463 | struct nfs41_create_session_args args = { | |
7464 | .client = clp, | |
79969dd1 TM |
7465 | .clientid = clp->cl_clientid, |
7466 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7467 | .cb_program = NFS4_CALLBACK, |
7468 | }; | |
79969dd1 TM |
7469 | struct nfs41_create_session_res res; |
7470 | ||
fc931582 AA |
7471 | struct rpc_message msg = { |
7472 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7473 | .rpc_argp = &args, | |
7474 | .rpc_resp = &res, | |
848f5bda | 7475 | .rpc_cred = cred, |
fc931582 AA |
7476 | }; |
7477 | int status; | |
7478 | ||
7479 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7480 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7481 | |
1bd714f2 | 7482 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7483 | trace_nfs4_create_session(clp, status); |
fc931582 | 7484 | |
43095d39 | 7485 | if (!status) { |
8d35301d | 7486 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7487 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7488 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7489 | if (clp->cl_seqid == res.seqid) |
7490 | clp->cl_seqid++; | |
7491 | if (status) | |
7492 | goto out; | |
7493 | nfs4_update_session(session, &res); | |
fc931582 | 7494 | } |
79969dd1 | 7495 | out: |
fc931582 AA |
7496 | return status; |
7497 | } | |
7498 | ||
7499 | /* | |
7500 | * Issues a CREATE_SESSION operation to the server. | |
7501 | * It is the responsibility of the caller to verify the session is | |
7502 | * expired before calling this routine. | |
7503 | */ | |
848f5bda | 7504 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7505 | { |
7506 | int status; | |
7507 | unsigned *ptr; | |
fc931582 AA |
7508 | struct nfs4_session *session = clp->cl_session; |
7509 | ||
7510 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7511 | ||
848f5bda | 7512 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7513 | if (status) |
7514 | goto out; | |
7515 | ||
aacd5537 AA |
7516 | /* Init or reset the session slot tables */ |
7517 | status = nfs4_setup_session_slot_tables(session); | |
7518 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7519 | if (status) |
7520 | goto out; | |
7521 | ||
7522 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7523 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7524 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7525 | out: |
7526 | dprintk("<-- %s\n", __func__); | |
7527 | return status; | |
7528 | } | |
7529 | ||
0f3e66c6 AA |
7530 | /* |
7531 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7532 | * The caller must serialize access to this routine. | |
7533 | */ | |
848f5bda TM |
7534 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7535 | struct rpc_cred *cred) | |
0f3e66c6 | 7536 | { |
848f5bda TM |
7537 | struct rpc_message msg = { |
7538 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7539 | .rpc_argp = session, | |
7540 | .rpc_cred = cred, | |
7541 | }; | |
0f3e66c6 | 7542 | int status = 0; |
0f3e66c6 AA |
7543 | |
7544 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7545 | ||
7546 | /* session is still being setup */ | |
e11259f9 TM |
7547 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7548 | return 0; | |
0f3e66c6 | 7549 | |
1bd714f2 | 7550 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7551 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7552 | |
7553 | if (status) | |
08106ac7 | 7554 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7555 | "Session has been destroyed regardless...\n", status); |
7556 | ||
7557 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7558 | return status; | |
7559 | } | |
7560 | ||
fc01cea9 AA |
7561 | /* |
7562 | * Renew the cl_session lease. | |
7563 | */ | |
d5f8d3fe TM |
7564 | struct nfs4_sequence_data { |
7565 | struct nfs_client *clp; | |
7566 | struct nfs4_sequence_args args; | |
7567 | struct nfs4_sequence_res res; | |
7568 | }; | |
7569 | ||
dc96aef9 AB |
7570 | static void nfs41_sequence_release(void *data) |
7571 | { | |
d5f8d3fe TM |
7572 | struct nfs4_sequence_data *calldata = data; |
7573 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7574 | |
7135840f AB |
7575 | if (atomic_read(&clp->cl_count) > 1) |
7576 | nfs4_schedule_state_renewal(clp); | |
7577 | nfs_put_client(clp); | |
d5f8d3fe | 7578 | kfree(calldata); |
dc96aef9 AB |
7579 | } |
7580 | ||
aa5190d0 TM |
7581 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7582 | { | |
7583 | switch(task->tk_status) { | |
7584 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7585 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7586 | return -EAGAIN; | |
7587 | default: | |
0400a6b0 | 7588 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7589 | } |
7590 | return 0; | |
7591 | } | |
7592 | ||
dc96aef9 | 7593 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7594 | { |
d5f8d3fe TM |
7595 | struct nfs4_sequence_data *calldata = data; |
7596 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7597 | |
14516c3a TM |
7598 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7599 | return; | |
fc01cea9 | 7600 | |
c6d01c6f | 7601 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7602 | if (task->tk_status < 0) { |
7603 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7604 | if (atomic_read(&clp->cl_count) == 1) |
7605 | goto out; | |
fc01cea9 | 7606 | |
aa5190d0 TM |
7607 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7608 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7609 | return; |
7610 | } | |
7611 | } | |
fc01cea9 | 7612 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7613 | out: |
fc01cea9 AA |
7614 | dprintk("<-- %s\n", __func__); |
7615 | } | |
7616 | ||
7617 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7618 | { | |
d5f8d3fe TM |
7619 | struct nfs4_sequence_data *calldata = data; |
7620 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7621 | struct nfs4_sequence_args *args; |
7622 | struct nfs4_sequence_res *res; | |
7623 | ||
fc01cea9 AA |
7624 | args = task->tk_msg.rpc_argp; |
7625 | res = task->tk_msg.rpc_resp; | |
7626 | ||
d9afbd1b | 7627 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7628 | } |
7629 | ||
7630 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7631 | .rpc_call_done = nfs41_sequence_call_done, | |
7632 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7633 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7634 | }; |
7635 | ||
8fe72bac TM |
7636 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7637 | struct rpc_cred *cred, | |
7638 | bool is_privileged) | |
fc01cea9 | 7639 | { |
d5f8d3fe | 7640 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7641 | struct rpc_message msg = { |
7642 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7643 | .rpc_cred = cred, | |
7644 | }; | |
71ac6da9 TM |
7645 | struct rpc_task_setup task_setup_data = { |
7646 | .rpc_client = clp->cl_rpcclient, | |
7647 | .rpc_message = &msg, | |
8fe72bac | 7648 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7649 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7650 | }; |
fc01cea9 | 7651 | |
7135840f | 7652 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7653 | return ERR_PTR(-EIO); |
dfb4f309 | 7654 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7655 | if (calldata == NULL) { |
7135840f | 7656 | nfs_put_client(clp); |
71ac6da9 | 7657 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7658 | } |
a9c92d6b | 7659 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7660 | if (is_privileged) |
7661 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7662 | msg.rpc_argp = &calldata->args; |
7663 | msg.rpc_resp = &calldata->res; | |
7664 | calldata->clp = clp; | |
71ac6da9 | 7665 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7666 | |
71ac6da9 TM |
7667 | return rpc_run_task(&task_setup_data); |
7668 | } | |
7669 | ||
2f60ea6b | 7670 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7671 | { |
7672 | struct rpc_task *task; | |
7673 | int ret = 0; | |
7674 | ||
2f60ea6b | 7675 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7676 | return -EAGAIN; |
8fe72bac | 7677 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7678 | if (IS_ERR(task)) |
7679 | ret = PTR_ERR(task); | |
7680 | else | |
bf294b41 | 7681 | rpc_put_task_async(task); |
71ac6da9 TM |
7682 | dprintk("<-- %s status=%d\n", __func__, ret); |
7683 | return ret; | |
7684 | } | |
7685 | ||
7686 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7687 | { | |
7688 | struct rpc_task *task; | |
7689 | int ret; | |
7690 | ||
8fe72bac | 7691 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7692 | if (IS_ERR(task)) { |
7693 | ret = PTR_ERR(task); | |
7694 | goto out; | |
7695 | } | |
7696 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7697 | if (!ret) |
71ac6da9 TM |
7698 | ret = task->tk_status; |
7699 | rpc_put_task(task); | |
7700 | out: | |
7701 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7702 | return ret; | |
fc01cea9 AA |
7703 | } |
7704 | ||
fce5c838 RL |
7705 | struct nfs4_reclaim_complete_data { |
7706 | struct nfs_client *clp; | |
7707 | struct nfs41_reclaim_complete_args arg; | |
7708 | struct nfs41_reclaim_complete_res res; | |
7709 | }; | |
7710 | ||
7711 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7712 | { | |
7713 | struct nfs4_reclaim_complete_data *calldata = data; | |
7714 | ||
d9afbd1b TM |
7715 | nfs41_setup_sequence(calldata->clp->cl_session, |
7716 | &calldata->arg.seq_args, | |
7717 | &calldata->res.seq_res, | |
7718 | task); | |
fce5c838 RL |
7719 | } |
7720 | ||
aa5190d0 TM |
7721 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7722 | { | |
7723 | switch(task->tk_status) { | |
7724 | case 0: | |
7725 | case -NFS4ERR_COMPLETE_ALREADY: | |
7726 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7727 | break; | |
7728 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7729 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7730 | /* fall through */ |
7731 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7732 | return -EAGAIN; |
7733 | default: | |
0400a6b0 | 7734 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7735 | } |
7736 | return 0; | |
7737 | } | |
7738 | ||
fce5c838 RL |
7739 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7740 | { | |
7741 | struct nfs4_reclaim_complete_data *calldata = data; | |
7742 | struct nfs_client *clp = calldata->clp; | |
7743 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7744 | ||
7745 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7746 | if (!nfs41_sequence_done(task, res)) |
7747 | return; | |
fce5c838 | 7748 | |
c6d01c6f | 7749 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7750 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7751 | rpc_restart_call_prepare(task); | |
7752 | return; | |
7753 | } | |
fce5c838 RL |
7754 | dprintk("<-- %s\n", __func__); |
7755 | } | |
7756 | ||
7757 | static void nfs4_free_reclaim_complete_data(void *data) | |
7758 | { | |
7759 | struct nfs4_reclaim_complete_data *calldata = data; | |
7760 | ||
7761 | kfree(calldata); | |
7762 | } | |
7763 | ||
7764 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7765 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7766 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7767 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7768 | }; | |
7769 | ||
7770 | /* | |
7771 | * Issue a global reclaim complete. | |
7772 | */ | |
965e9c23 TM |
7773 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7774 | struct rpc_cred *cred) | |
fce5c838 RL |
7775 | { |
7776 | struct nfs4_reclaim_complete_data *calldata; | |
7777 | struct rpc_task *task; | |
7778 | struct rpc_message msg = { | |
7779 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7780 | .rpc_cred = cred, |
fce5c838 RL |
7781 | }; |
7782 | struct rpc_task_setup task_setup_data = { | |
7783 | .rpc_client = clp->cl_rpcclient, | |
7784 | .rpc_message = &msg, | |
7785 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7786 | .flags = RPC_TASK_ASYNC, | |
7787 | }; | |
7788 | int status = -ENOMEM; | |
7789 | ||
7790 | dprintk("--> %s\n", __func__); | |
8535b2be | 7791 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7792 | if (calldata == NULL) |
7793 | goto out; | |
7794 | calldata->clp = clp; | |
7795 | calldata->arg.one_fs = 0; | |
fce5c838 | 7796 | |
a9c92d6b | 7797 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7798 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7799 | msg.rpc_argp = &calldata->arg; |
7800 | msg.rpc_resp = &calldata->res; | |
7801 | task_setup_data.callback_data = calldata; | |
7802 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7803 | if (IS_ERR(task)) { |
fce5c838 | 7804 | status = PTR_ERR(task); |
acf82b85 DC |
7805 | goto out; |
7806 | } | |
c34c32ea AA |
7807 | status = nfs4_wait_for_completion_rpc_task(task); |
7808 | if (status == 0) | |
7809 | status = task->tk_status; | |
fce5c838 | 7810 | rpc_put_task(task); |
acf82b85 | 7811 | return 0; |
fce5c838 RL |
7812 | out: |
7813 | dprintk("<-- %s status=%d\n", __func__, status); | |
7814 | return status; | |
7815 | } | |
b1f69b75 AA |
7816 | |
7817 | static void | |
7818 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7819 | { | |
7820 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7821 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7822 | struct nfs4_session *session = nfs4_get_session(server); |
ab7d763e | 7823 | int ret; |
b1f69b75 AA |
7824 | |
7825 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7826 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7827 | * right now covering the LAYOUTGET we are about to send. | |
7828 | * However, that is not so catastrophic, and there seems | |
7829 | * to be no way to prevent it completely. | |
7830 | */ | |
6ba7db34 | 7831 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7832 | &lgp->res.seq_res, task)) |
b1f69b75 | 7833 | return; |
ab7d763e | 7834 | ret = pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
cf7d63f1 | 7835 | NFS_I(lgp->args.inode)->layout, |
ce6ab4f2 | 7836 | &lgp->args.range, |
ab7d763e TM |
7837 | lgp->args.ctx->state); |
7838 | if (ret < 0) | |
7839 | rpc_exit(task, ret); | |
b1f69b75 AA |
7840 | } |
7841 | ||
7842 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7843 | { | |
7844 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7845 | struct inode *inode = lgp->args.inode; |
7846 | struct nfs_server *server = NFS_SERVER(inode); | |
7847 | struct pnfs_layout_hdr *lo; | |
7848 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7849 | unsigned long timeo, now, giveup; |
b1f69b75 | 7850 | |
ed7e5423 | 7851 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7852 | |
6ba7db34 | 7853 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7854 | goto out; |
b1f69b75 AA |
7855 | |
7856 | switch (task->tk_status) { | |
7857 | case 0: | |
ee314c2a | 7858 | goto out; |
7c1e6e58 PT |
7859 | |
7860 | /* | |
7861 | * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs | |
7862 | * on the file. set tk_status to -ENODATA to tell upper layer to | |
7863 | * retry go inband. | |
7864 | */ | |
7865 | case -NFS4ERR_LAYOUTUNAVAILABLE: | |
7866 | task->tk_status = -ENODATA; | |
7867 | goto out; | |
21b874c8 TM |
7868 | /* |
7869 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
7870 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
7871 | */ | |
7872 | case -NFS4ERR_BADLAYOUT: | |
7873 | goto out_overflow; | |
ed7e5423 BH |
7874 | /* |
7875 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
7876 | * (or clients) writing to the same RAID stripe except when |
7877 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
ed7e5423 | 7878 | */ |
b1f69b75 | 7879 | case -NFS4ERR_LAYOUTTRYLATER: |
21b874c8 TM |
7880 | if (lgp->args.minlength == 0) |
7881 | goto out_overflow; | |
ed7e5423 BH |
7882 | /* |
7883 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7884 | * existing layout before getting a new one). | |
7885 | */ | |
b1f69b75 | 7886 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7887 | timeo = rpc_get_timeout(task->tk_client); |
7888 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7889 | now = jiffies; |
7890 | if (time_after(giveup, now)) { | |
7891 | unsigned long delay; | |
7892 | ||
7893 | /* Delay for: | |
7894 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7895 | * - One last time a jiffie before we give up | |
7896 | * - exponential backoff (time_now minus start_attempt) | |
7897 | */ | |
7898 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7899 | min((giveup - now - 1), | |
7900 | now - lgp->args.timestamp)); | |
7901 | ||
7902 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7903 | __func__, delay); | |
7904 | rpc_delay(task, delay); | |
2259f960 TM |
7905 | /* Do not call nfs4_async_handle_error() */ |
7906 | goto out_restart; | |
ed7e5423 | 7907 | } |
ee314c2a TM |
7908 | break; |
7909 | case -NFS4ERR_EXPIRED: | |
7910 | case -NFS4ERR_BAD_STATEID: | |
7911 | spin_lock(&inode->i_lock); | |
2259f960 TM |
7912 | if (nfs4_stateid_match(&lgp->args.stateid, |
7913 | &lgp->args.ctx->state->stateid)) { | |
ee314c2a TM |
7914 | spin_unlock(&inode->i_lock); |
7915 | /* If the open stateid was bad, then recover it. */ | |
7916 | state = lgp->args.ctx->state; | |
2259f960 TM |
7917 | break; |
7918 | } | |
7919 | lo = NFS_I(inode)->layout; | |
7920 | if (lo && nfs4_stateid_match(&lgp->args.stateid, | |
7921 | &lo->plh_stateid)) { | |
ee314c2a TM |
7922 | LIST_HEAD(head); |
7923 | ||
defb8460 CH |
7924 | /* |
7925 | * Mark the bad layout state as invalid, then retry | |
7926 | * with the current stateid. | |
7927 | */ | |
8714d46d | 7928 | set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); |
ee314c2a TM |
7929 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7930 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7931 | pnfs_free_lseg_list(&head); |
2259f960 TM |
7932 | } else |
7933 | spin_unlock(&inode->i_lock); | |
7934 | goto out_restart; | |
b1f69b75 | 7935 | } |
91ab4b4d | 7936 | if (nfs4_async_handle_error(task, server, state, &lgp->timeout) == -EAGAIN) |
2259f960 | 7937 | goto out_restart; |
ee314c2a | 7938 | out: |
b1f69b75 | 7939 | dprintk("<-- %s\n", __func__); |
21b874c8 | 7940 | return; |
2259f960 TM |
7941 | out_restart: |
7942 | task->tk_status = 0; | |
7943 | rpc_restart_call_prepare(task); | |
7944 | return; | |
21b874c8 TM |
7945 | out_overflow: |
7946 | task->tk_status = -EOVERFLOW; | |
7947 | goto out; | |
b1f69b75 AA |
7948 | } |
7949 | ||
8554116e IK |
7950 | static size_t max_response_pages(struct nfs_server *server) |
7951 | { | |
7952 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7953 | return nfs_page_array_len(0, max_resp_sz); | |
7954 | } | |
7955 | ||
7956 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7957 | { | |
7958 | int i; | |
7959 | ||
7960 | if (!pages) | |
7961 | return; | |
7962 | ||
7963 | for (i = 0; i < size; i++) { | |
7964 | if (!pages[i]) | |
7965 | break; | |
7966 | __free_page(pages[i]); | |
7967 | } | |
7968 | kfree(pages); | |
7969 | } | |
7970 | ||
7971 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7972 | { | |
7973 | struct page **pages; | |
7974 | int i; | |
7975 | ||
7976 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7977 | if (!pages) { | |
7978 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7979 | return NULL; | |
7980 | } | |
7981 | ||
7982 | for (i = 0; i < size; i++) { | |
7983 | pages[i] = alloc_page(gfp_flags); | |
7984 | if (!pages[i]) { | |
7985 | dprintk("%s: failed to allocate page\n", __func__); | |
7986 | nfs4_free_pages(pages, size); | |
7987 | return NULL; | |
7988 | } | |
7989 | } | |
7990 | ||
7991 | return pages; | |
7992 | } | |
7993 | ||
b1f69b75 AA |
7994 | static void nfs4_layoutget_release(void *calldata) |
7995 | { | |
7996 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7997 | struct inode *inode = lgp->args.inode; |
7998 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7999 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8000 | |
8001 | dprintk("--> %s\n", __func__); | |
8554116e | 8002 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 8003 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
8004 | put_nfs_open_context(lgp->args.ctx); |
8005 | kfree(calldata); | |
8006 | dprintk("<-- %s\n", __func__); | |
8007 | } | |
8008 | ||
8009 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
8010 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
8011 | .rpc_call_done = nfs4_layoutget_done, | |
8012 | .rpc_release = nfs4_layoutget_release, | |
8013 | }; | |
8014 | ||
a0b0a6e3 TM |
8015 | struct pnfs_layout_segment * |
8016 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 8017 | { |
a47970ff WAA |
8018 | struct inode *inode = lgp->args.inode; |
8019 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8020 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8021 | struct rpc_task *task; |
8022 | struct rpc_message msg = { | |
8023 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
8024 | .rpc_argp = &lgp->args, | |
8025 | .rpc_resp = &lgp->res, | |
6ab59344 | 8026 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
8027 | }; |
8028 | struct rpc_task_setup task_setup_data = { | |
8029 | .rpc_client = server->client, | |
8030 | .rpc_message = &msg, | |
8031 | .callback_ops = &nfs4_layoutget_call_ops, | |
8032 | .callback_data = lgp, | |
8033 | .flags = RPC_TASK_ASYNC, | |
8034 | }; | |
a0b0a6e3 | 8035 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
8036 | int status = 0; |
8037 | ||
8038 | dprintk("--> %s\n", __func__); | |
8039 | ||
4bd5a980 PT |
8040 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
8041 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
8042 | ||
8554116e IK |
8043 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
8044 | if (!lgp->args.layout.pages) { | |
8045 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 8046 | return ERR_PTR(-ENOMEM); |
8554116e IK |
8047 | } |
8048 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 8049 | lgp->args.timestamp = jiffies; |
8554116e | 8050 | |
35124a09 | 8051 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 8052 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 8053 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 8054 | |
b1f69b75 AA |
8055 | task = rpc_run_task(&task_setup_data); |
8056 | if (IS_ERR(task)) | |
a0b0a6e3 | 8057 | return ERR_CAST(task); |
b1f69b75 | 8058 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
8059 | if (status == 0) |
8060 | status = task->tk_status; | |
1037e6ea TM |
8061 | trace_nfs4_layoutget(lgp->args.ctx, |
8062 | &lgp->args.range, | |
8063 | &lgp->res.range, | |
48c9579a | 8064 | &lgp->res.stateid, |
1037e6ea | 8065 | status); |
085b7a45 WAA |
8066 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
8067 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 8068 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
8069 | rpc_put_task(task); |
8070 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
8071 | if (status) |
8072 | return ERR_PTR(status); | |
8073 | return lseg; | |
b1f69b75 AA |
8074 | } |
8075 | ||
cbe82603 BH |
8076 | static void |
8077 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
8078 | { | |
8079 | struct nfs4_layoutreturn *lrp = calldata; | |
8080 | ||
8081 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
8082 | nfs41_setup_sequence(lrp->clp->cl_session, |
8083 | &lrp->args.seq_args, | |
8084 | &lrp->res.seq_res, | |
8085 | task); | |
cbe82603 BH |
8086 | } |
8087 | ||
8088 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
8089 | { | |
8090 | struct nfs4_layoutreturn *lrp = calldata; | |
8091 | struct nfs_server *server; | |
8092 | ||
8093 | dprintk("--> %s\n", __func__); | |
8094 | ||
6ba7db34 | 8095 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
8096 | return; |
8097 | ||
8098 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
8099 | switch (task->tk_status) { |
8100 | default: | |
8101 | task->tk_status = 0; | |
8102 | case 0: | |
8103 | break; | |
8104 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8105 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8106 | break; |
d00c5d43 | 8107 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8108 | return; |
8109 | } | |
cbe82603 BH |
8110 | dprintk("<-- %s\n", __func__); |
8111 | } | |
8112 | ||
8113 | static void nfs4_layoutreturn_release(void *calldata) | |
8114 | { | |
8115 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8116 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8117 | LIST_HEAD(freeme); |
cbe82603 BH |
8118 | |
8119 | dprintk("--> %s\n", __func__); | |
849b286f | 8120 | spin_lock(&lo->plh_inode->i_lock); |
0654cc72 TM |
8121 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range); |
8122 | pnfs_mark_layout_returned_if_empty(lo); | |
849b286f TM |
8123 | if (lrp->res.lrs_present) |
8124 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
d67ae825 | 8125 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f | 8126 | spin_unlock(&lo->plh_inode->i_lock); |
c5d73716 | 8127 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8128 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8129 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8130 | kfree(calldata); |
8131 | dprintk("<-- %s\n", __func__); | |
8132 | } | |
8133 | ||
8134 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8135 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8136 | .rpc_call_done = nfs4_layoutreturn_done, | |
8137 | .rpc_release = nfs4_layoutreturn_release, | |
8138 | }; | |
8139 | ||
6c16605d | 8140 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8141 | { |
8142 | struct rpc_task *task; | |
8143 | struct rpc_message msg = { | |
8144 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8145 | .rpc_argp = &lrp->args, | |
8146 | .rpc_resp = &lrp->res, | |
9556000d | 8147 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8148 | }; |
8149 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8150 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8151 | .rpc_message = &msg, |
8152 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8153 | .callback_data = lrp, | |
8154 | }; | |
6c16605d | 8155 | int status = 0; |
cbe82603 | 8156 | |
99ade3c7 AE |
8157 | nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client, |
8158 | NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
8159 | &task_setup_data.rpc_client, &msg); | |
8160 | ||
cbe82603 | 8161 | dprintk("--> %s\n", __func__); |
5a0ec8ac TM |
8162 | if (!sync) { |
8163 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8164 | if (!lrp->inode) { | |
8165 | nfs4_layoutreturn_release(lrp); | |
8166 | return -EAGAIN; | |
8167 | } | |
8168 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8169 | } | |
a9c92d6b | 8170 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8171 | task = rpc_run_task(&task_setup_data); |
8172 | if (IS_ERR(task)) | |
8173 | return PTR_ERR(task); | |
5a0ec8ac TM |
8174 | if (sync) |
8175 | status = task->tk_status; | |
48c9579a | 8176 | trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status); |
cbe82603 BH |
8177 | dprintk("<-- %s status=%d\n", __func__, status); |
8178 | rpc_put_task(task); | |
8179 | return status; | |
8180 | } | |
8181 | ||
b1f69b75 | 8182 | static int |
cd5875fe TM |
8183 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8184 | struct pnfs_device *pdev, | |
8185 | struct rpc_cred *cred) | |
b1f69b75 AA |
8186 | { |
8187 | struct nfs4_getdeviceinfo_args args = { | |
8188 | .pdev = pdev, | |
4e590803 TM |
8189 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8190 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8191 | }; |
8192 | struct nfs4_getdeviceinfo_res res = { | |
8193 | .pdev = pdev, | |
8194 | }; | |
8195 | struct rpc_message msg = { | |
8196 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8197 | .rpc_argp = &args, | |
8198 | .rpc_resp = &res, | |
cd5875fe | 8199 | .rpc_cred = cred, |
b1f69b75 AA |
8200 | }; |
8201 | int status; | |
8202 | ||
8203 | dprintk("--> %s\n", __func__); | |
7c513058 | 8204 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8205 | if (res.notification & ~args.notify_types) |
8206 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8207 | if (res.notification != args.notify_types) |
8208 | pdev->nocache = 1; | |
4e590803 | 8209 | |
b1f69b75 AA |
8210 | dprintk("<-- %s status=%d\n", __func__, status); |
8211 | ||
8212 | return status; | |
8213 | } | |
8214 | ||
cd5875fe TM |
8215 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8216 | struct pnfs_device *pdev, | |
8217 | struct rpc_cred *cred) | |
b1f69b75 AA |
8218 | { |
8219 | struct nfs4_exception exception = { }; | |
8220 | int err; | |
8221 | ||
8222 | do { | |
8223 | err = nfs4_handle_exception(server, | |
cd5875fe | 8224 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8225 | &exception); |
8226 | } while (exception.retry); | |
8227 | return err; | |
8228 | } | |
8229 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8230 | ||
863a3c6c AA |
8231 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8232 | { | |
8233 | struct nfs4_layoutcommit_data *data = calldata; | |
8234 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8235 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8236 | |
d9afbd1b TM |
8237 | nfs41_setup_sequence(session, |
8238 | &data->args.seq_args, | |
8239 | &data->res.seq_res, | |
8240 | task); | |
863a3c6c AA |
8241 | } |
8242 | ||
8243 | static void | |
8244 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8245 | { | |
8246 | struct nfs4_layoutcommit_data *data = calldata; | |
8247 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8248 | ||
6ba7db34 | 8249 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8250 | return; |
8251 | ||
8252 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8253 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8254 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8255 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8256 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8257 | task->tk_status = 0; |
e59d27e0 | 8258 | case 0: |
e59d27e0 TM |
8259 | break; |
8260 | default: | |
8478eaa1 | 8261 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8262 | rpc_restart_call_prepare(task); |
8263 | return; | |
8264 | } | |
8265 | } | |
863a3c6c AA |
8266 | } |
8267 | ||
8268 | static void nfs4_layoutcommit_release(void *calldata) | |
8269 | { | |
8270 | struct nfs4_layoutcommit_data *data = calldata; | |
8271 | ||
db29c089 | 8272 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8273 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8274 | data->res.fattr); | |
863a3c6c | 8275 | put_rpccred(data->cred); |
472e2594 | 8276 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8277 | kfree(data); |
8278 | } | |
8279 | ||
8280 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8281 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8282 | .rpc_call_done = nfs4_layoutcommit_done, | |
8283 | .rpc_release = nfs4_layoutcommit_release, | |
8284 | }; | |
8285 | ||
8286 | int | |
ef311537 | 8287 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8288 | { |
8289 | struct rpc_message msg = { | |
8290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8291 | .rpc_argp = &data->args, | |
8292 | .rpc_resp = &data->res, | |
8293 | .rpc_cred = data->cred, | |
8294 | }; | |
8295 | struct rpc_task_setup task_setup_data = { | |
8296 | .task = &data->task, | |
8297 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8298 | .rpc_message = &msg, | |
8299 | .callback_ops = &nfs4_layoutcommit_ops, | |
8300 | .callback_data = data, | |
863a3c6c AA |
8301 | }; |
8302 | struct rpc_task *task; | |
8303 | int status = 0; | |
8304 | ||
b4839ebe KM |
8305 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8306 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8307 | data->args.lastbytewritten, |
8308 | data->args.inode->i_ino); | |
8309 | ||
472e2594 TM |
8310 | if (!sync) { |
8311 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8312 | if (data->inode == NULL) { | |
8313 | nfs4_layoutcommit_release(data); | |
8314 | return -EAGAIN; | |
8315 | } | |
8316 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8317 | } | |
a9c92d6b | 8318 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8319 | task = rpc_run_task(&task_setup_data); |
8320 | if (IS_ERR(task)) | |
8321 | return PTR_ERR(task); | |
472e2594 TM |
8322 | if (sync) |
8323 | status = task->tk_status; | |
48c9579a | 8324 | trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status); |
863a3c6c AA |
8325 | dprintk("%s: status %d\n", __func__, status); |
8326 | rpc_put_task(task); | |
8327 | return status; | |
8328 | } | |
fca78d6d | 8329 | |
97431204 AA |
8330 | /** |
8331 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8332 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8333 | */ | |
fca78d6d BS |
8334 | static int |
8335 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8336 | struct nfs_fsinfo *info, |
8337 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8338 | { |
8339 | struct nfs41_secinfo_no_name_args args = { | |
8340 | .style = SECINFO_STYLE_CURRENT_FH, | |
8341 | }; | |
8342 | struct nfs4_secinfo_res res = { | |
8343 | .flavors = flavors, | |
8344 | }; | |
8345 | struct rpc_message msg = { | |
8346 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8347 | .rpc_argp = &args, | |
8348 | .rpc_resp = &res, | |
8349 | }; | |
b1b3e136 | 8350 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8351 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8352 | int status; |
8353 | ||
8354 | if (use_integrity) { | |
8355 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8356 | cred = nfs4_get_clid_cred(server->nfs_client); |
8357 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8358 | } |
8359 | ||
8360 | dprintk("--> %s\n", __func__); | |
8361 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8362 | &res.seq_res, 0); | |
8363 | dprintk("<-- %s status=%d\n", __func__, status); | |
8364 | ||
7cb852df WAA |
8365 | if (cred) |
8366 | put_rpccred(cred); | |
b1b3e136 WAA |
8367 | |
8368 | return status; | |
fca78d6d BS |
8369 | } |
8370 | ||
8371 | static int | |
8372 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8373 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8374 | { | |
8375 | struct nfs4_exception exception = { }; | |
8376 | int err; | |
8377 | do { | |
b1b3e136 WAA |
8378 | /* first try using integrity protection */ |
8379 | err = -NFS4ERR_WRONGSEC; | |
8380 | ||
8381 | /* try to use integrity protection with machine cred */ | |
8382 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8383 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8384 | flavors, true); | |
8385 | ||
8386 | /* | |
8387 | * if unable to use integrity protection, or SECINFO with | |
8388 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8389 | * disallowed by spec, but exists in deployed servers) use | |
8390 | * the current filesystem's rpc_client and the user cred. | |
8391 | */ | |
8392 | if (err == -NFS4ERR_WRONGSEC) | |
8393 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8394 | flavors, false); | |
8395 | ||
fca78d6d BS |
8396 | switch (err) { |
8397 | case 0: | |
8398 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8399 | case -ENOTSUPP: |
05e9cfb4 | 8400 | goto out; |
fca78d6d BS |
8401 | default: |
8402 | err = nfs4_handle_exception(server, err, &exception); | |
8403 | } | |
8404 | } while (exception.retry); | |
05e9cfb4 | 8405 | out: |
fca78d6d BS |
8406 | return err; |
8407 | } | |
8408 | ||
8409 | static int | |
8410 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8411 | struct nfs_fsinfo *info) | |
8412 | { | |
8413 | int err; | |
8414 | struct page *page; | |
367156d9 | 8415 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8416 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8417 | struct nfs4_secinfo4 *secinfo; |
8418 | int i; | |
fca78d6d BS |
8419 | |
8420 | page = alloc_page(GFP_KERNEL); | |
8421 | if (!page) { | |
8422 | err = -ENOMEM; | |
8423 | goto out; | |
8424 | } | |
8425 | ||
8426 | flavors = page_address(page); | |
8427 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8428 | ||
8429 | /* | |
8430 | * Fall back on "guess and check" method if | |
8431 | * the server doesn't support SECINFO_NO_NAME | |
8432 | */ | |
78b19bae | 8433 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8434 | err = nfs4_find_root_sec(server, fhandle, info); |
8435 | goto out_freepage; | |
8436 | } | |
8437 | if (err) | |
8438 | goto out_freepage; | |
8439 | ||
58a8cf12 WAA |
8440 | for (i = 0; i < flavors->num_flavors; i++) { |
8441 | secinfo = &flavors->flavors[i]; | |
8442 | ||
8443 | switch (secinfo->flavor) { | |
8444 | case RPC_AUTH_NULL: | |
8445 | case RPC_AUTH_UNIX: | |
8446 | case RPC_AUTH_GSS: | |
8447 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8448 | &secinfo->flavor_info); | |
8449 | break; | |
8450 | default: | |
8451 | flavor = RPC_AUTH_MAXFLAVOR; | |
8452 | break; | |
8453 | } | |
8454 | ||
4d4b69dd WAA |
8455 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8456 | flavor = RPC_AUTH_MAXFLAVOR; | |
8457 | ||
58a8cf12 WAA |
8458 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8459 | err = nfs4_lookup_root_sec(server, fhandle, | |
8460 | info, flavor); | |
8461 | if (!err) | |
8462 | break; | |
8463 | } | |
8464 | } | |
8465 | ||
8466 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8467 | err = -EPERM; | |
fca78d6d BS |
8468 | |
8469 | out_freepage: | |
8470 | put_page(page); | |
8471 | if (err == -EACCES) | |
8472 | return -EPERM; | |
8473 | out: | |
8474 | return err; | |
8475 | } | |
1cab0652 | 8476 | |
ab7cb0df TM |
8477 | static int _nfs41_test_stateid(struct nfs_server *server, |
8478 | nfs4_stateid *stateid, | |
8479 | struct rpc_cred *cred) | |
7d974794 BS |
8480 | { |
8481 | int status; | |
8482 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8483 | .stateid = stateid, |
7d974794 BS |
8484 | }; |
8485 | struct nfs41_test_stateid_res res; | |
8486 | struct rpc_message msg = { | |
8487 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8488 | .rpc_argp = &args, | |
8489 | .rpc_resp = &res, | |
ab7cb0df | 8490 | .rpc_cred = cred, |
7d974794 | 8491 | }; |
3787d506 WAA |
8492 | struct rpc_clnt *rpc_client = server->client; |
8493 | ||
8494 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8495 | &rpc_client, &msg); | |
1cab0652 | 8496 | |
38527b15 | 8497 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8498 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8499 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8500 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8501 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8502 | if (status != NFS_OK) { |
8503 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8504 | return status; |
38527b15 CL |
8505 | } |
8506 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8507 | return -res.status; |
7d974794 BS |
8508 | } |
8509 | ||
38527b15 CL |
8510 | /** |
8511 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8512 | * | |
8513 | * @server: server / transport on which to perform the operation | |
8514 | * @stateid: state ID to test | |
ab7cb0df | 8515 | * @cred: credential |
38527b15 CL |
8516 | * |
8517 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8518 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8519 | * failed or the state ID is not currently valid. | |
8520 | */ | |
ab7cb0df TM |
8521 | static int nfs41_test_stateid(struct nfs_server *server, |
8522 | nfs4_stateid *stateid, | |
8523 | struct rpc_cred *cred) | |
7d974794 BS |
8524 | { |
8525 | struct nfs4_exception exception = { }; | |
8526 | int err; | |
8527 | do { | |
ab7cb0df | 8528 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8529 | if (err != -NFS4ERR_DELAY) |
8530 | break; | |
8531 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8532 | } while (exception.retry); |
8533 | return err; | |
8534 | } | |
9aeda35f | 8535 | |
7c1d5fae TM |
8536 | struct nfs_free_stateid_data { |
8537 | struct nfs_server *server; | |
8538 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8539 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8540 | }; |
8541 | ||
8542 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8543 | { | |
8544 | struct nfs_free_stateid_data *data = calldata; | |
8545 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8546 | &data->args.seq_args, | |
8547 | &data->res.seq_res, | |
8548 | task); | |
8549 | } | |
8550 | ||
8551 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8552 | { | |
8553 | struct nfs_free_stateid_data *data = calldata; | |
8554 | ||
8555 | nfs41_sequence_done(task, &data->res.seq_res); | |
8556 | ||
8557 | switch (task->tk_status) { | |
8558 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8559 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8560 | rpc_restart_call_prepare(task); |
8561 | } | |
8562 | } | |
8563 | ||
8564 | static void nfs41_free_stateid_release(void *calldata) | |
8565 | { | |
8566 | kfree(calldata); | |
8567 | } | |
8568 | ||
17f26b12 | 8569 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8570 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8571 | .rpc_call_done = nfs41_free_stateid_done, | |
8572 | .rpc_release = nfs41_free_stateid_release, | |
8573 | }; | |
8574 | ||
8575 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8576 | nfs4_stateid *stateid, | |
ab7cb0df | 8577 | struct rpc_cred *cred, |
7c1d5fae TM |
8578 | bool privileged) |
8579 | { | |
9aeda35f BS |
8580 | struct rpc_message msg = { |
8581 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8582 | .rpc_cred = cred, |
9aeda35f | 8583 | }; |
7c1d5fae TM |
8584 | struct rpc_task_setup task_setup = { |
8585 | .rpc_client = server->client, | |
8586 | .rpc_message = &msg, | |
8587 | .callback_ops = &nfs41_free_stateid_ops, | |
8588 | .flags = RPC_TASK_ASYNC, | |
8589 | }; | |
8590 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8591 | |
3787d506 WAA |
8592 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8593 | &task_setup.rpc_client, &msg); | |
8594 | ||
38527b15 | 8595 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8596 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8597 | if (!data) | |
8598 | return ERR_PTR(-ENOMEM); | |
8599 | data->server = server; | |
8600 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8601 | ||
8602 | task_setup.callback_data = data; | |
8603 | ||
8604 | msg.rpc_argp = &data->args; | |
8605 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8606 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8607 | if (privileged) |
8608 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8609 | ||
8610 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8611 | } |
8612 | ||
38527b15 CL |
8613 | /** |
8614 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8615 | * | |
8616 | * @server: server / transport on which to perform the operation | |
8617 | * @stateid: state ID to release | |
ab7cb0df | 8618 | * @cred: credential |
38527b15 CL |
8619 | * |
8620 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8621 | * negative NFS4ERR value is returned. | |
8622 | */ | |
ab7cb0df TM |
8623 | static int nfs41_free_stateid(struct nfs_server *server, |
8624 | nfs4_stateid *stateid, | |
8625 | struct rpc_cred *cred) | |
9aeda35f | 8626 | { |
7c1d5fae TM |
8627 | struct rpc_task *task; |
8628 | int ret; | |
8629 | ||
ab7cb0df | 8630 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8631 | if (IS_ERR(task)) |
8632 | return PTR_ERR(task); | |
8633 | ret = rpc_wait_for_completion_task(task); | |
8634 | if (!ret) | |
8635 | ret = task->tk_status; | |
8636 | rpc_put_task(task); | |
8637 | return ret; | |
9aeda35f | 8638 | } |
36281caa | 8639 | |
f1cdae87 JL |
8640 | static void |
8641 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8642 | { |
8643 | struct rpc_task *task; | |
ab7cb0df | 8644 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8645 | |
ab7cb0df | 8646 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8647 | nfs4_free_lock_state(server, lsp); |
8648 | if (IS_ERR(task)) | |
f1cdae87 | 8649 | return; |
c8b2d0bf | 8650 | rpc_put_task(task); |
c8b2d0bf TM |
8651 | } |
8652 | ||
36281caa TM |
8653 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8654 | const nfs4_stateid *s2) | |
8655 | { | |
2d2f24ad | 8656 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8657 | return false; |
8658 | ||
2d2f24ad | 8659 | if (s1->seqid == s2->seqid) |
36281caa | 8660 | return true; |
2d2f24ad | 8661 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8662 | return true; |
8663 | ||
8664 | return false; | |
8665 | } | |
8666 | ||
557134a3 AA |
8667 | #endif /* CONFIG_NFS_V4_1 */ |
8668 | ||
36281caa TM |
8669 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8670 | const nfs4_stateid *s2) | |
8671 | { | |
f597c537 | 8672 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8673 | } |
8674 | ||
8675 | ||
17280175 | 8676 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8677 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8678 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8679 | .recover_open = nfs4_open_reclaim, |
8680 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8681 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8682 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8683 | }; |
8684 | ||
591d71cb | 8685 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8686 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8687 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8688 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8689 | .recover_open = nfs4_open_reclaim, | |
8690 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8691 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8692 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8693 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8694 | }; |
8695 | #endif /* CONFIG_NFS_V4_1 */ | |
8696 | ||
17280175 | 8697 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8698 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8699 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8700 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8701 | .recover_lock = nfs4_lock_expired, |
8702 | .establish_clid = nfs4_init_clientid, | |
8703 | }; | |
8704 | ||
8705 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8706 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8707 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8708 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8709 | .recover_open = nfs41_open_expired, |
8710 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8711 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8712 | }; |
591d71cb | 8713 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8714 | |
17280175 | 8715 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8716 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8717 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8718 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8719 | }; |
8720 | ||
8721 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8722 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8723 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8724 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8725 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8726 | }; |
8727 | #endif | |
8728 | ||
ec011fe8 | 8729 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8730 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8731 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8732 | }; |
8733 | ||
8734 | #if defined(CONFIG_NFS_V4_1) | |
8735 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8736 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8737 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8738 | }; |
8739 | #endif /* CONFIG_NFS_V4_1 */ | |
8740 | ||
97dc1359 TM |
8741 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8742 | .minor_version = 0, | |
39c6daae TM |
8743 | .init_caps = NFS_CAP_READDIRPLUS |
8744 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8745 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8746 | .init_client = nfs40_init_client, |
8747 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8748 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8749 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8750 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8751 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8752 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8753 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8754 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8755 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8756 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8757 | }; |
8758 | ||
8759 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8760 | static struct nfs_seqid * |
8761 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8762 | { | |
8763 | return NULL; | |
8764 | } | |
8765 | ||
97dc1359 TM |
8766 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8767 | .minor_version = 1, | |
39c6daae TM |
8768 | .init_caps = NFS_CAP_READDIRPLUS |
8769 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8770 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8771 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8772 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8773 | .init_client = nfs41_init_client, |
8774 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8775 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8776 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8777 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8778 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8779 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8780 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8781 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8782 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8783 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8784 | }; |
8785 | #endif | |
8786 | ||
42c2c424 SD |
8787 | #if defined(CONFIG_NFS_V4_2) |
8788 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8789 | .minor_version = 2, | |
7017310a BS |
8790 | .init_caps = NFS_CAP_READDIRPLUS |
8791 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8792 | | NFS_CAP_POSIX_LOCK |
8793 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8794 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8795 | | NFS_CAP_ALLOCATE |
624bd5b7 | 8796 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 8797 | | NFS_CAP_SEEK |
e5341f3a PT |
8798 | | NFS_CAP_LAYOUTSTATS |
8799 | | NFS_CAP_CLONE, | |
abf79bb3 CL |
8800 | .init_client = nfs41_init_client, |
8801 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8802 | .match_stateid = nfs41_match_stateid, |
8803 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8804 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8805 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8806 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8807 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8808 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8809 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8810 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8811 | }; |
8812 | #endif | |
8813 | ||
97dc1359 TM |
8814 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8815 | [0] = &nfs_v4_0_minor_ops, | |
8816 | #if defined(CONFIG_NFS_V4_1) | |
8817 | [1] = &nfs_v4_1_minor_ops, | |
8818 | #endif | |
42c2c424 SD |
8819 | #if defined(CONFIG_NFS_V4_2) |
8820 | [2] = &nfs_v4_2_minor_ops, | |
8821 | #endif | |
97dc1359 TM |
8822 | }; |
8823 | ||
c4803c49 AG |
8824 | ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) |
8825 | { | |
8826 | ssize_t error, error2; | |
8827 | ||
8828 | error = generic_listxattr(dentry, list, size); | |
8829 | if (error < 0) | |
8830 | return error; | |
8831 | if (list) { | |
8832 | list += error; | |
8833 | size -= error; | |
8834 | } | |
8835 | ||
8836 | error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size); | |
8837 | if (error2 < 0) | |
8838 | return error2; | |
8839 | return error + error2; | |
8840 | } | |
8841 | ||
17f26b12 | 8842 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8843 | .create = nfs_create, |
8844 | .lookup = nfs_lookup, | |
8845 | .atomic_open = nfs_atomic_open, | |
8846 | .link = nfs_link, | |
8847 | .unlink = nfs_unlink, | |
8848 | .symlink = nfs_symlink, | |
8849 | .mkdir = nfs_mkdir, | |
8850 | .rmdir = nfs_rmdir, | |
8851 | .mknod = nfs_mknod, | |
8852 | .rename = nfs_rename, | |
8853 | .permission = nfs_permission, | |
8854 | .getattr = nfs_getattr, | |
8855 | .setattr = nfs_setattr, | |
8856 | .getxattr = generic_getxattr, | |
8857 | .setxattr = generic_setxattr, | |
c4803c49 | 8858 | .listxattr = nfs4_listxattr, |
73a79706 BS |
8859 | .removexattr = generic_removexattr, |
8860 | }; | |
8861 | ||
92e1d5be | 8862 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8863 | .permission = nfs_permission, |
8864 | .getattr = nfs_getattr, | |
8865 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8866 | .getxattr = generic_getxattr, |
8867 | .setxattr = generic_setxattr, | |
c4803c49 | 8868 | .listxattr = nfs4_listxattr, |
64c2ce8b | 8869 | .removexattr = generic_removexattr, |
6b3b5496 BF |
8870 | }; |
8871 | ||
509de811 | 8872 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8873 | .version = 4, /* protocol version */ |
8874 | .dentry_ops = &nfs4_dentry_operations, | |
8875 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8876 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8877 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8878 | .getroot = nfs4_proc_get_root, |
281cad46 | 8879 | .submount = nfs4_submount, |
ff9099f2 | 8880 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8881 | .getattr = nfs4_proc_getattr, |
8882 | .setattr = nfs4_proc_setattr, | |
8883 | .lookup = nfs4_proc_lookup, | |
8884 | .access = nfs4_proc_access, | |
8885 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8886 | .create = nfs4_proc_create, |
8887 | .remove = nfs4_proc_remove, | |
8888 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8889 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8890 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8891 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8892 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8893 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8894 | .link = nfs4_proc_link, |
8895 | .symlink = nfs4_proc_symlink, | |
8896 | .mkdir = nfs4_proc_mkdir, | |
8897 | .rmdir = nfs4_proc_remove, | |
8898 | .readdir = nfs4_proc_readdir, | |
8899 | .mknod = nfs4_proc_mknod, | |
8900 | .statfs = nfs4_proc_statfs, | |
8901 | .fsinfo = nfs4_proc_fsinfo, | |
8902 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8903 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8904 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8905 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8906 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8907 | .read_done = nfs4_read_done, |
1da177e4 | 8908 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8909 | .write_done = nfs4_write_done, |
1da177e4 | 8910 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8911 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8912 | .commit_done = nfs4_commit_done, |
1da177e4 | 8913 | .lock = nfs4_proc_lock, |
e50a1c2e | 8914 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8915 | .close_context = nfs4_close_context, |
2b484297 | 8916 | .open_context = nfs4_atomic_open, |
011e2a7f | 8917 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8918 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8919 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8920 | .init_client = nfs4_init_client, |
cdb7eced | 8921 | .free_client = nfs4_free_client, |
1179acc6 BS |
8922 | .create_server = nfs4_create_server, |
8923 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8924 | }; |
8925 | ||
64c2ce8b | 8926 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
98e9cb57 | 8927 | .name = XATTR_NAME_NFSV4_ACL, |
64c2ce8b AK |
8928 | .list = nfs4_xattr_list_nfs4_acl, |
8929 | .get = nfs4_xattr_get_nfs4_acl, | |
8930 | .set = nfs4_xattr_set_nfs4_acl, | |
8931 | }; | |
8932 | ||
8933 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8934 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8935 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8936 | &nfs4_xattr_nfs4_label_handler, | |
8937 | #endif | |
64c2ce8b AK |
8938 | NULL |
8939 | }; | |
8940 | ||
1da177e4 LT |
8941 | /* |
8942 | * Local variables: | |
8943 | * c-basic-offset: 8 | |
8944 | * End: | |
8945 | */ |