]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
8478eaa1 | 81 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, long *); |
81934ddb | 82 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
83 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
84 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
85 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
86 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
87 | struct nfs4_state *state, struct nfs4_label *ilabel, |
88 | struct nfs4_label *olabel); | |
f062eb6c | 89 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
90 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
91 | struct rpc_cred *); | |
92 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
93 | struct rpc_cred *); | |
f062eb6c | 94 | #endif |
aa9c2669 DQ |
95 | |
96 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
97 | static inline struct nfs4_label * | |
98 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
99 | struct iattr *sattr, struct nfs4_label *label) | |
100 | { | |
101 | int err; | |
102 | ||
103 | if (label == NULL) | |
104 | return NULL; | |
105 | ||
106 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
107 | return NULL; | |
108 | ||
aa9c2669 DQ |
109 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
110 | &dentry->d_name, (void **)&label->label, &label->len); | |
111 | if (err == 0) | |
112 | return label; | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | static inline void | |
117 | nfs4_label_release_security(struct nfs4_label *label) | |
118 | { | |
119 | if (label) | |
120 | security_release_secctx(label->label, label->len); | |
121 | } | |
122 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
123 | { | |
124 | if (label) | |
125 | return server->attr_bitmask; | |
126 | ||
127 | return server->attr_bitmask_nl; | |
128 | } | |
129 | #else | |
130 | static inline struct nfs4_label * | |
131 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
132 | struct iattr *sattr, struct nfs4_label *l) | |
133 | { return NULL; } | |
134 | static inline void | |
135 | nfs4_label_release_security(struct nfs4_label *label) | |
136 | { return; } | |
137 | static inline u32 * | |
138 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
139 | { return server->attr_bitmask; } | |
140 | #endif | |
141 | ||
1da177e4 | 142 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 143 | static int nfs4_map_errors(int err) |
1da177e4 | 144 | { |
52567b03 TM |
145 | if (err >= -1000) |
146 | return err; | |
147 | switch (err) { | |
148 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
149 | case -NFS4ERR_LAYOUTTRYLATER: |
150 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 151 | return -EREMOTEIO; |
7ebb9315 | 152 | case -NFS4ERR_WRONGSEC: |
8897538e | 153 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 154 | return -EPERM; |
3ddeb7c5 TM |
155 | case -NFS4ERR_BADOWNER: |
156 | case -NFS4ERR_BADNAME: | |
157 | return -EINVAL; | |
fb13bfa7 TM |
158 | case -NFS4ERR_SHARE_DENIED: |
159 | return -EACCES; | |
f25efd85 SD |
160 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
161 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
162 | case -NFS4ERR_FILE_OPEN: |
163 | return -EBUSY; | |
52567b03 | 164 | default: |
1da177e4 | 165 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 166 | __func__, -err); |
52567b03 | 167 | break; |
1da177e4 | 168 | } |
52567b03 | 169 | return -EIO; |
1da177e4 LT |
170 | } |
171 | ||
172 | /* | |
173 | * This is our standard bitmap for GETATTR requests. | |
174 | */ | |
1549210f | 175 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
176 | FATTR4_WORD0_TYPE |
177 | | FATTR4_WORD0_CHANGE | |
178 | | FATTR4_WORD0_SIZE | |
179 | | FATTR4_WORD0_FSID | |
180 | | FATTR4_WORD0_FILEID, | |
181 | FATTR4_WORD1_MODE | |
182 | | FATTR4_WORD1_NUMLINKS | |
183 | | FATTR4_WORD1_OWNER | |
184 | | FATTR4_WORD1_OWNER_GROUP | |
185 | | FATTR4_WORD1_RAWDEV | |
186 | | FATTR4_WORD1_SPACE_USED | |
187 | | FATTR4_WORD1_TIME_ACCESS | |
188 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
189 | | FATTR4_WORD1_TIME_MODIFY |
190 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
191 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
192 | FATTR4_WORD2_SECURITY_LABEL | |
193 | #endif | |
1da177e4 LT |
194 | }; |
195 | ||
1549210f TM |
196 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
197 | FATTR4_WORD0_TYPE | |
198 | | FATTR4_WORD0_CHANGE | |
199 | | FATTR4_WORD0_SIZE | |
200 | | FATTR4_WORD0_FSID | |
201 | | FATTR4_WORD0_FILEID, | |
202 | FATTR4_WORD1_MODE | |
203 | | FATTR4_WORD1_NUMLINKS | |
204 | | FATTR4_WORD1_OWNER | |
205 | | FATTR4_WORD1_OWNER_GROUP | |
206 | | FATTR4_WORD1_RAWDEV | |
207 | | FATTR4_WORD1_SPACE_USED | |
208 | | FATTR4_WORD1_TIME_ACCESS | |
209 | | FATTR4_WORD1_TIME_METADATA | |
210 | | FATTR4_WORD1_TIME_MODIFY, | |
211 | FATTR4_WORD2_MDSTHRESHOLD | |
212 | }; | |
213 | ||
e23008ec AA |
214 | static const u32 nfs4_open_noattr_bitmap[3] = { |
215 | FATTR4_WORD0_TYPE | |
216 | | FATTR4_WORD0_CHANGE | |
217 | | FATTR4_WORD0_FILEID, | |
218 | }; | |
219 | ||
a09df2ca | 220 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
221 | FATTR4_WORD0_FILES_AVAIL |
222 | | FATTR4_WORD0_FILES_FREE | |
223 | | FATTR4_WORD0_FILES_TOTAL, | |
224 | FATTR4_WORD1_SPACE_AVAIL | |
225 | | FATTR4_WORD1_SPACE_FREE | |
226 | | FATTR4_WORD1_SPACE_TOTAL | |
227 | }; | |
228 | ||
a09df2ca | 229 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
230 | FATTR4_WORD0_MAXLINK |
231 | | FATTR4_WORD0_MAXNAME, | |
232 | 0 | |
233 | }; | |
234 | ||
dae100c2 | 235 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
236 | | FATTR4_WORD0_MAXREAD |
237 | | FATTR4_WORD0_MAXWRITE | |
238 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 239 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
240 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
241 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
242 | }; |
243 | ||
a09df2ca | 244 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
245 | FATTR4_WORD0_TYPE |
246 | | FATTR4_WORD0_CHANGE | |
247 | | FATTR4_WORD0_SIZE | |
248 | | FATTR4_WORD0_FSID | |
249 | | FATTR4_WORD0_FILEID | |
250 | | FATTR4_WORD0_FS_LOCATIONS, | |
251 | FATTR4_WORD1_MODE | |
252 | | FATTR4_WORD1_NUMLINKS | |
253 | | FATTR4_WORD1_OWNER | |
254 | | FATTR4_WORD1_OWNER_GROUP | |
255 | | FATTR4_WORD1_RAWDEV | |
256 | | FATTR4_WORD1_SPACE_USED | |
257 | | FATTR4_WORD1_TIME_ACCESS | |
258 | | FATTR4_WORD1_TIME_METADATA | |
259 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 260 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
261 | }; |
262 | ||
bc4785cd | 263 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
264 | struct nfs4_readdir_arg *readdir) |
265 | { | |
0dbb4c67 | 266 | __be32 *start, *p; |
1da177e4 | 267 | |
1da177e4 | 268 | if (cookie > 2) { |
b7ef1956 | 269 | readdir->cookie = cookie; |
1da177e4 LT |
270 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
271 | return; | |
272 | } | |
273 | ||
274 | readdir->cookie = 0; | |
275 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
276 | if (cookie == 2) | |
277 | return; | |
278 | ||
279 | /* | |
280 | * NFSv4 servers do not return entries for '.' and '..' | |
281 | * Therefore, we fake these entries here. We let '.' | |
282 | * have cookie 0 and '..' have cookie 1. Note that | |
283 | * when talking to the server, we always send cookie 0 | |
284 | * instead of 1 or 2. | |
285 | */ | |
2b86ce2d | 286 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
287 | |
288 | if (cookie == 0) { | |
289 | *p++ = xdr_one; /* next */ | |
290 | *p++ = xdr_zero; /* cookie, first word */ | |
291 | *p++ = xdr_one; /* cookie, second word */ | |
292 | *p++ = xdr_one; /* entry len */ | |
293 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
294 | p++; | |
295 | *p++ = xdr_one; /* bitmap length */ | |
296 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
297 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 298 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
1da177e4 LT |
299 | } |
300 | ||
301 | *p++ = xdr_one; /* next */ | |
302 | *p++ = xdr_zero; /* cookie, first word */ | |
303 | *p++ = xdr_two; /* cookie, second word */ | |
304 | *p++ = xdr_two; /* entry len */ | |
305 | memcpy(p, "..\0\0", 4); /* entry */ | |
306 | p++; | |
307 | *p++ = xdr_one; /* bitmap length */ | |
308 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
309 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 310 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
311 | |
312 | readdir->pgbase = (char *)p - (char *)start; | |
313 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 314 | kunmap_atomic(start); |
1da177e4 LT |
315 | } |
316 | ||
8478eaa1 N |
317 | static long nfs4_update_delay(long *timeout) |
318 | { | |
319 | long ret; | |
320 | if (!timeout) | |
321 | return NFS4_POLL_RETRY_MAX; | |
322 | if (*timeout <= 0) | |
323 | *timeout = NFS4_POLL_RETRY_MIN; | |
324 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
325 | *timeout = NFS4_POLL_RETRY_MAX; | |
326 | ret = *timeout; | |
327 | *timeout <<= 1; | |
328 | return ret; | |
329 | } | |
330 | ||
65de872e TM |
331 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
332 | { | |
333 | int res = 0; | |
334 | ||
335 | might_sleep(); | |
336 | ||
8478eaa1 N |
337 | freezable_schedule_timeout_killable_unsafe( |
338 | nfs4_update_delay(timeout)); | |
65de872e TM |
339 | if (fatal_signal_pending(current)) |
340 | res = -ERESTARTSYS; | |
65de872e TM |
341 | return res; |
342 | } | |
343 | ||
344 | /* This is the error handling routine for processes that are allowed | |
345 | * to sleep. | |
346 | */ | |
f4ac1674 | 347 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
348 | { |
349 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 350 | struct nfs4_state *state = exception->state; |
3114ea7a | 351 | struct inode *inode = exception->inode; |
65de872e TM |
352 | int ret = errorcode; |
353 | ||
354 | exception->retry = 0; | |
355 | switch(errorcode) { | |
356 | case 0: | |
357 | return 0; | |
3114ea7a | 358 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
359 | case -NFS4ERR_DELEG_REVOKED: |
360 | case -NFS4ERR_ADMIN_REVOKED: | |
361 | case -NFS4ERR_BAD_STATEID: | |
011e2a7f | 362 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 363 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
364 | exception->retry = 1; |
365 | return 0; | |
366 | } | |
367 | if (state == NULL) | |
368 | break; | |
5d422301 TM |
369 | ret = nfs4_schedule_stateid_recovery(server, state); |
370 | if (ret < 0) | |
371 | break; | |
3114ea7a | 372 | goto wait_on_recovery; |
0ced63d1 | 373 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
374 | if (state != NULL) { |
375 | ret = nfs4_schedule_stateid_recovery(server, state); | |
376 | if (ret < 0) | |
377 | break; | |
378 | } | |
65de872e | 379 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 380 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
381 | nfs4_schedule_lease_recovery(clp); |
382 | goto wait_on_recovery; | |
519ae255 CL |
383 | case -NFS4ERR_MOVED: |
384 | ret = nfs4_schedule_migration_recovery(server); | |
385 | if (ret < 0) | |
386 | break; | |
387 | goto wait_on_recovery; | |
8ef2f8d4 CL |
388 | case -NFS4ERR_LEASE_MOVED: |
389 | nfs4_schedule_lease_moved_recovery(clp); | |
390 | goto wait_on_recovery; | |
03391693 | 391 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
392 | case -NFS4ERR_BADSESSION: |
393 | case -NFS4ERR_BADSLOT: | |
394 | case -NFS4ERR_BAD_HIGH_SLOT: | |
395 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
396 | case -NFS4ERR_DEADSESSION: | |
397 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
398 | case -NFS4ERR_SEQ_MISORDERED: | |
399 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
400 | errorcode); | |
9f594791 | 401 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 402 | goto wait_on_recovery; |
03391693 | 403 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 404 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
405 | if (exception->timeout > HZ) { |
406 | /* We have retried a decent amount, time to | |
407 | * fail | |
408 | */ | |
409 | ret = -EBUSY; | |
410 | break; | |
411 | } | |
65de872e TM |
412 | case -NFS4ERR_GRACE: |
413 | case -NFS4ERR_DELAY: | |
414 | ret = nfs4_delay(server->client, &exception->timeout); | |
415 | if (ret != 0) | |
416 | break; | |
a8a4ae3a | 417 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
418 | case -NFS4ERR_OLD_STATEID: |
419 | exception->retry = 1; | |
b064eca2 TM |
420 | break; |
421 | case -NFS4ERR_BADOWNER: | |
422 | /* The following works around a Linux server bug! */ | |
423 | case -NFS4ERR_BADNAME: | |
424 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
425 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
426 | exception->retry = 1; | |
427 | printk(KERN_WARNING "NFS: v4 server %s " | |
428 | "does not accept raw " | |
429 | "uid/gids. " | |
430 | "Reenabling the idmapper.\n", | |
431 | server->nfs_client->cl_hostname); | |
432 | } | |
65de872e TM |
433 | } |
434 | /* We failed to handle the error */ | |
435 | return nfs4_map_errors(ret); | |
0400a6b0 | 436 | wait_on_recovery: |
a2c0b9e2 | 437 | ret = nfs4_wait_clnt_recover(clp); |
519ae255 CL |
438 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
439 | return -EIO; | |
a2c0b9e2 TM |
440 | if (ret == 0) |
441 | exception->retry = 1; | |
442 | return ret; | |
65de872e TM |
443 | } |
444 | ||
a5250def WAA |
445 | /* |
446 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
447 | * or 'false' otherwise. | |
448 | */ | |
449 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
450 | { | |
451 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
452 | ||
453 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
454 | flavor == RPC_AUTH_GSS_KRB5P) | |
455 | return true; | |
456 | ||
457 | return false; | |
458 | } | |
65de872e | 459 | |
452e9352 | 460 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 461 | { |
1da177e4 LT |
462 | spin_lock(&clp->cl_lock); |
463 | if (time_before(clp->cl_last_renewal,timestamp)) | |
464 | clp->cl_last_renewal = timestamp; | |
465 | spin_unlock(&clp->cl_lock); | |
466 | } | |
467 | ||
452e9352 TM |
468 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
469 | { | |
be824167 TM |
470 | struct nfs_client *clp = server->nfs_client; |
471 | ||
472 | if (!nfs4_has_session(clp)) | |
473 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
474 | } |
475 | ||
2a3eb2b9 CL |
476 | struct nfs4_call_sync_data { |
477 | const struct nfs_server *seq_server; | |
478 | struct nfs4_sequence_args *seq_args; | |
479 | struct nfs4_sequence_res *seq_res; | |
480 | }; | |
481 | ||
be3a5d23 TM |
482 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
483 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
484 | { |
485 | args->sa_slot = NULL; | |
486 | args->sa_cache_this = cache_reply; | |
487 | args->sa_privileged = 0; | |
488 | ||
489 | res->sr_slot = NULL; | |
490 | } | |
491 | ||
492 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
493 | { | |
494 | args->sa_privileged = 1; | |
495 | } | |
496 | ||
cb04ad2a PT |
497 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
498 | struct nfs4_sequence_args *args, | |
499 | struct nfs4_sequence_res *res, | |
500 | struct rpc_task *task) | |
3bd2384a | 501 | { |
3bd2384a CL |
502 | struct nfs4_slot *slot; |
503 | ||
504 | /* slot already allocated? */ | |
505 | if (res->sr_slot != NULL) | |
506 | goto out_start; | |
507 | ||
508 | spin_lock(&tbl->slot_tbl_lock); | |
509 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
510 | goto out_sleep; | |
511 | ||
512 | slot = nfs4_alloc_slot(tbl); | |
513 | if (IS_ERR(slot)) { | |
514 | if (slot == ERR_PTR(-ENOMEM)) | |
515 | task->tk_timeout = HZ >> 2; | |
516 | goto out_sleep; | |
517 | } | |
518 | spin_unlock(&tbl->slot_tbl_lock); | |
519 | ||
520 | args->sa_slot = slot; | |
521 | res->sr_slot = slot; | |
522 | ||
523 | out_start: | |
524 | rpc_call_start(task); | |
525 | return 0; | |
526 | ||
527 | out_sleep: | |
528 | if (args->sa_privileged) | |
529 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
530 | NULL, RPC_PRIORITY_PRIVILEGED); | |
531 | else | |
532 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
533 | spin_unlock(&tbl->slot_tbl_lock); | |
534 | return -EAGAIN; | |
535 | } | |
cb04ad2a | 536 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
537 | |
538 | static int nfs40_sequence_done(struct rpc_task *task, | |
539 | struct nfs4_sequence_res *res) | |
540 | { | |
541 | struct nfs4_slot *slot = res->sr_slot; | |
542 | struct nfs4_slot_table *tbl; | |
543 | ||
cab92c19 | 544 | if (slot == NULL) |
3bd2384a CL |
545 | goto out; |
546 | ||
547 | tbl = slot->table; | |
548 | spin_lock(&tbl->slot_tbl_lock); | |
549 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
550 | nfs4_free_slot(tbl, slot); | |
551 | spin_unlock(&tbl->slot_tbl_lock); | |
552 | ||
553 | res->sr_slot = NULL; | |
554 | out: | |
555 | return 1; | |
556 | } | |
557 | ||
cccef3b9 AA |
558 | #if defined(CONFIG_NFS_V4_1) |
559 | ||
d185a334 | 560 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 561 | { |
e3725ec0 | 562 | struct nfs4_session *session; |
13615871 | 563 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 564 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 565 | bool send_new_highest_used_slotid = false; |
13615871 | 566 | |
a13ce7c6 | 567 | tbl = slot->table; |
e3725ec0 | 568 | session = tbl->session; |
ea028ac9 | 569 | |
35dc1d74 | 570 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
571 | /* Be nice to the server: try to ensure that the last transmitted |
572 | * value for highest_user_slotid <= target_highest_slotid | |
573 | */ | |
574 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
575 | send_new_highest_used_slotid = true; | |
576 | ||
a13ce7c6 | 577 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
578 | send_new_highest_used_slotid = false; |
579 | goto out_unlock; | |
580 | } | |
a13ce7c6 | 581 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
582 | |
583 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
584 | send_new_highest_used_slotid = false; | |
b75ad4cd | 585 | out_unlock: |
35dc1d74 | 586 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 587 | res->sr_slot = NULL; |
c10e4498 | 588 | if (send_new_highest_used_slotid) |
3f10a6af | 589 | nfs41_notify_server(session->clp); |
13615871 AA |
590 | } |
591 | ||
f9c96fcc | 592 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 593 | { |
e3725ec0 | 594 | struct nfs4_session *session; |
a13ce7c6 | 595 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 596 | struct nfs_client *clp; |
ac20d163 | 597 | bool interrupted = false; |
85563073 | 598 | int ret = 1; |
b0df806c | 599 | |
a13ce7c6 TM |
600 | if (slot == NULL) |
601 | goto out_noaction; | |
468f8613 BS |
602 | /* don't increment the sequence number if the task wasn't sent */ |
603 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
604 | goto out; |
605 | ||
e3725ec0 | 606 | session = slot->table->session; |
933602e3 | 607 | |
ac20d163 TM |
608 | if (slot->interrupted) { |
609 | slot->interrupted = 0; | |
610 | interrupted = true; | |
611 | } | |
612 | ||
2f92ae34 | 613 | trace_nfs4_sequence_done(session, res); |
691daf3b | 614 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
615 | switch (res->sr_status) { |
616 | case 0: | |
b0df806c | 617 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 618 | ++slot->seq_nr; |
e3725ec0 | 619 | clp = session->clp; |
8e63b6a8 | 620 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 621 | /* Check sequence flags */ |
b15c7cdd | 622 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 623 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 624 | break; |
ac20d163 TM |
625 | case 1: |
626 | /* | |
627 | * sr_status remains 1 if an RPC level error occurred. | |
628 | * The server may or may not have processed the sequence | |
629 | * operation.. | |
630 | * Mark the slot as having hosted an interrupted RPC call. | |
631 | */ | |
632 | slot->interrupted = 1; | |
633 | goto out; | |
14516c3a TM |
634 | case -NFS4ERR_DELAY: |
635 | /* The server detected a resend of the RPC call and | |
636 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
637 | * of RFC5661. | |
638 | */ | |
df2fabff | 639 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 640 | __func__, |
df2fabff | 641 | slot->slot_nr, |
933602e3 | 642 | slot->seq_nr); |
14516c3a | 643 | goto out_retry; |
85563073 TM |
644 | case -NFS4ERR_BADSLOT: |
645 | /* | |
646 | * The slot id we used was probably retired. Try again | |
647 | * using a different slot id. | |
648 | */ | |
e8794440 TM |
649 | goto retry_nowait; |
650 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
651 | /* |
652 | * Was the last operation on this sequence interrupted? | |
653 | * If so, retry after bumping the sequence number. | |
654 | */ | |
655 | if (interrupted) { | |
656 | ++slot->seq_nr; | |
657 | goto retry_nowait; | |
658 | } | |
e8794440 TM |
659 | /* |
660 | * Could this slot have been previously retired? | |
661 | * If so, then the server may be expecting seq_nr = 1! | |
662 | */ | |
8e63b6a8 TM |
663 | if (slot->seq_nr != 1) { |
664 | slot->seq_nr = 1; | |
665 | goto retry_nowait; | |
666 | } | |
667 | break; | |
e8794440 TM |
668 | case -NFS4ERR_SEQ_FALSE_RETRY: |
669 | ++slot->seq_nr; | |
670 | goto retry_nowait; | |
14516c3a TM |
671 | default: |
672 | /* Just update the slot sequence no. */ | |
933602e3 | 673 | ++slot->seq_nr; |
b0df806c AA |
674 | } |
675 | out: | |
676 | /* The session may be reset by one of the error handlers. */ | |
677 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 678 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 679 | out_noaction: |
85563073 | 680 | return ret; |
e8794440 TM |
681 | retry_nowait: |
682 | if (rpc_restart_call_prepare(task)) { | |
683 | task->tk_status = 0; | |
684 | ret = 0; | |
685 | } | |
686 | goto out; | |
14516c3a | 687 | out_retry: |
d05dd4e9 | 688 | if (!rpc_restart_call(task)) |
14516c3a TM |
689 | goto out; |
690 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
691 | return 0; | |
b0df806c | 692 | } |
f9c96fcc | 693 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 694 | |
2c4b131d | 695 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 696 | { |
e3725ec0 | 697 | if (res->sr_slot == NULL) |
14516c3a | 698 | return 1; |
3bd2384a CL |
699 | if (!res->sr_slot->table->session) |
700 | return nfs40_sequence_done(task, res); | |
14516c3a | 701 | return nfs41_sequence_done(task, res); |
df896455 | 702 | } |
2c4b131d | 703 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 704 | |
dc70d7b3 | 705 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
706 | struct nfs4_sequence_args *args, |
707 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
708 | struct rpc_task *task) |
709 | { | |
fbcd4abc AA |
710 | struct nfs4_slot *slot; |
711 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
712 | |
713 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 714 | /* slot already allocated? */ |
dfb4f309 | 715 | if (res->sr_slot != NULL) |
d9afbd1b | 716 | goto out_success; |
ce5039c1 | 717 | |
fbcd4abc AA |
718 | tbl = &session->fc_slot_table; |
719 | ||
69d206b5 TM |
720 | task->tk_timeout = 0; |
721 | ||
fbcd4abc | 722 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 723 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 724 | !args->sa_privileged) { |
0b1c8fc4 | 725 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 726 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 727 | goto out_sleep; |
689cf5c1 AB |
728 | } |
729 | ||
2dc03b7f | 730 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
731 | if (IS_ERR(slot)) { |
732 | /* If out of memory, try again in 1/4 second */ | |
733 | if (slot == ERR_PTR(-ENOMEM)) | |
734 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 735 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 736 | goto out_sleep; |
fbcd4abc AA |
737 | } |
738 | spin_unlock(&tbl->slot_tbl_lock); | |
739 | ||
2b2fa717 | 740 | args->sa_slot = slot; |
fbcd4abc | 741 | |
e8d92382 | 742 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 743 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 744 | |
dfb4f309 | 745 | res->sr_slot = slot; |
8e63b6a8 | 746 | res->sr_timestamp = jiffies; |
2a6e26cd | 747 | res->sr_status_flags = 0; |
fbcd4abc AA |
748 | /* |
749 | * sr_status is only set in decode_sequence, and so will remain | |
750 | * set to 1 if an rpc level failure occurs. | |
751 | */ | |
752 | res->sr_status = 1; | |
2f92ae34 | 753 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
754 | out_success: |
755 | rpc_call_start(task); | |
ce5039c1 | 756 | return 0; |
7b939a3f | 757 | out_sleep: |
8fe72bac TM |
758 | /* Privileged tasks are queued with top priority */ |
759 | if (args->sa_privileged) | |
1e1093c7 TM |
760 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
761 | NULL, RPC_PRIORITY_PRIVILEGED); | |
762 | else | |
763 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
764 | spin_unlock(&tbl->slot_tbl_lock); |
765 | return -EAGAIN; | |
ce5039c1 | 766 | } |
dc70d7b3 | 767 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 768 | |
5a580e0a CL |
769 | static int nfs4_setup_sequence(const struct nfs_server *server, |
770 | struct nfs4_sequence_args *args, | |
771 | struct nfs4_sequence_res *res, | |
772 | struct rpc_task *task) | |
ce5039c1 | 773 | { |
035168ab | 774 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
775 | int ret = 0; |
776 | ||
3bd2384a | 777 | if (!session) |
cb04ad2a PT |
778 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
779 | args, res, task); | |
035168ab | 780 | |
e8d92382 | 781 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 782 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 783 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 784 | |
9d12b216 | 785 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 786 | |
ce5039c1 AA |
787 | dprintk("<-- %s status=%d\n", __func__, ret); |
788 | return ret; | |
789 | } | |
790 | ||
ce5039c1 AA |
791 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
792 | { | |
2a3eb2b9 | 793 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 794 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 795 | |
035168ab TM |
796 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
797 | ||
d9afbd1b | 798 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
799 | } |
800 | ||
69ab40c4 AA |
801 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
802 | { | |
2a3eb2b9 | 803 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 804 | |
14516c3a | 805 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
806 | } |
807 | ||
17280175 | 808 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 809 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 810 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
811 | }; |
812 | ||
3bd2384a CL |
813 | #else /* !CONFIG_NFS_V4_1 */ |
814 | ||
9915ea7e CL |
815 | static int nfs4_setup_sequence(const struct nfs_server *server, |
816 | struct nfs4_sequence_args *args, | |
817 | struct nfs4_sequence_res *res, | |
818 | struct rpc_task *task) | |
819 | { | |
cb04ad2a PT |
820 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
821 | args, res, task); | |
9915ea7e CL |
822 | } |
823 | ||
2c4b131d PT |
824 | int nfs4_sequence_done(struct rpc_task *task, |
825 | struct nfs4_sequence_res *res) | |
9915ea7e | 826 | { |
3bd2384a | 827 | return nfs40_sequence_done(task, res); |
9915ea7e | 828 | } |
2c4b131d | 829 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
830 | |
831 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
832 | |
833 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
834 | { | |
835 | struct nfs4_call_sync_data *data = calldata; | |
836 | nfs4_setup_sequence(data->seq_server, | |
837 | data->seq_args, data->seq_res, task); | |
838 | } | |
839 | ||
840 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
841 | { | |
842 | struct nfs4_call_sync_data *data = calldata; | |
843 | nfs4_sequence_done(task, data->seq_res); | |
844 | } | |
845 | ||
846 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
847 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
848 | .rpc_call_done = nfs40_call_sync_done, | |
849 | }; | |
850 | ||
7c513058 BS |
851 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
852 | struct nfs_server *server, | |
ce5039c1 AA |
853 | struct rpc_message *msg, |
854 | struct nfs4_sequence_args *args, | |
8fe72bac | 855 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
856 | { |
857 | int ret; | |
858 | struct rpc_task *task; | |
9915ea7e | 859 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 860 | struct nfs4_call_sync_data data = { |
035168ab | 861 | .seq_server = server, |
ce5039c1 AA |
862 | .seq_args = args, |
863 | .seq_res = res, | |
ce5039c1 AA |
864 | }; |
865 | struct rpc_task_setup task_setup = { | |
7c513058 | 866 | .rpc_client = clnt, |
ce5039c1 | 867 | .rpc_message = msg, |
9915ea7e | 868 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
869 | .callback_data = &data |
870 | }; | |
871 | ||
ce5039c1 AA |
872 | task = rpc_run_task(&task_setup); |
873 | if (IS_ERR(task)) | |
874 | ret = PTR_ERR(task); | |
875 | else { | |
876 | ret = task->tk_status; | |
877 | rpc_put_task(task); | |
878 | } | |
879 | return ret; | |
880 | } | |
881 | ||
7c513058 BS |
882 | int nfs4_call_sync(struct rpc_clnt *clnt, |
883 | struct nfs_server *server, | |
e73b83f2 BS |
884 | struct rpc_message *msg, |
885 | struct nfs4_sequence_args *args, | |
886 | struct nfs4_sequence_res *res, | |
887 | int cache_reply) | |
888 | { | |
a9c92d6b | 889 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 890 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 891 | } |
cccef3b9 | 892 | |
38478b24 | 893 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 894 | { |
38478b24 | 895 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 896 | |
38478b24 | 897 | spin_lock(&dir->i_lock); |
359d7d1c | 898 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 899 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 900 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 901 | dir->i_version = cinfo->after; |
3235b403 | 902 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 903 | nfs_fscache_invalidate(dir); |
38478b24 | 904 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
905 | } |
906 | ||
e56e0b78 | 907 | struct nfs4_opendata { |
c6d00e63 | 908 | struct kref kref; |
e56e0b78 TM |
909 | struct nfs_openargs o_arg; |
910 | struct nfs_openres o_res; | |
cdd4e68b TM |
911 | struct nfs_open_confirmargs c_arg; |
912 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
913 | struct nfs4_string owner_name; |
914 | struct nfs4_string group_name; | |
a49c2691 | 915 | struct nfs4_label *a_label; |
e56e0b78 | 916 | struct nfs_fattr f_attr; |
1775fd3e | 917 | struct nfs4_label *f_label; |
e56e0b78 | 918 | struct dentry *dir; |
82a2c1b7 | 919 | struct dentry *dentry; |
e56e0b78 | 920 | struct nfs4_state_owner *owner; |
aac00a8d | 921 | struct nfs4_state *state; |
e56e0b78 | 922 | struct iattr attrs; |
26e976a8 | 923 | unsigned long timestamp; |
3e309914 | 924 | unsigned int rpc_done : 1; |
5bc2afc2 | 925 | unsigned int file_created : 1; |
bdeca1b7 | 926 | unsigned int is_recover : 1; |
24ac23ab TM |
927 | int rpc_status; |
928 | int cancelled; | |
e56e0b78 TM |
929 | }; |
930 | ||
49f9a0fa TM |
931 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
932 | int err, struct nfs4_exception *exception) | |
933 | { | |
934 | if (err != -EINVAL) | |
935 | return false; | |
936 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
937 | return false; | |
938 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
939 | exception->retry = 1; | |
940 | return true; | |
941 | } | |
942 | ||
6ae37339 TM |
943 | static u32 |
944 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
945 | fmode_t fmode, int openflags) | |
946 | { | |
947 | u32 res = 0; | |
948 | ||
949 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
950 | case FMODE_READ: | |
951 | res = NFS4_SHARE_ACCESS_READ; | |
952 | break; | |
953 | case FMODE_WRITE: | |
954 | res = NFS4_SHARE_ACCESS_WRITE; | |
955 | break; | |
956 | case FMODE_READ|FMODE_WRITE: | |
957 | res = NFS4_SHARE_ACCESS_BOTH; | |
958 | } | |
959 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
960 | goto out; | |
961 | /* Want no delegation if we're using O_DIRECT */ | |
962 | if (openflags & O_DIRECT) | |
963 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
964 | out: | |
965 | return res; | |
966 | } | |
967 | ||
49f9a0fa TM |
968 | static enum open_claim_type4 |
969 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
970 | enum open_claim_type4 claim) | |
971 | { | |
972 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
973 | return claim; | |
974 | switch (claim) { | |
975 | default: | |
976 | return claim; | |
977 | case NFS4_OPEN_CLAIM_FH: | |
978 | return NFS4_OPEN_CLAIM_NULL; | |
979 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
980 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
981 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
982 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
983 | } | |
984 | } | |
2ced46c2 TM |
985 | |
986 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
987 | { | |
988 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 989 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
990 | p->o_res.seqid = p->o_arg.seqid; |
991 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 992 | p->o_res.server = p->o_arg.server; |
5f657530 | 993 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 994 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 995 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
996 | } |
997 | ||
82a2c1b7 | 998 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 999 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1000 | const struct iattr *attrs, |
1775fd3e | 1001 | struct nfs4_label *label, |
4a1c0893 | 1002 | enum open_claim_type4 claim, |
8535b2be | 1003 | gfp_t gfp_mask) |
e56e0b78 | 1004 | { |
82a2c1b7 | 1005 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1006 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1007 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1008 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1009 | struct nfs4_opendata *p; |
1010 | ||
8535b2be | 1011 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1012 | if (p == NULL) |
1013 | goto err; | |
14c43f76 DQ |
1014 | |
1015 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1016 | if (IS_ERR(p->f_label)) | |
1017 | goto err_free_p; | |
1018 | ||
a49c2691 KM |
1019 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1020 | if (IS_ERR(p->a_label)) | |
1021 | goto err_free_f; | |
1022 | ||
63f5f796 TM |
1023 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1024 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1025 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1026 | goto err_free_label; |
82a2c1b7 AV |
1027 | nfs_sb_active(dentry->d_sb); |
1028 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1029 | p->dir = parent; |
1030 | p->owner = sp; | |
1031 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1032 | p->o_arg.open_flags = flags; |
1033 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1034 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1035 | fmode, flags); | |
ae2bb032 WAA |
1036 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1037 | * will return permission denied for all bits until close */ | |
1038 | if (!(flags & O_EXCL)) { | |
1039 | /* ask server to check for all possible rights as results | |
1040 | * are cached */ | |
1041 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1042 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1043 | } |
7539bbab | 1044 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1045 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1046 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1047 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1048 | p->o_arg.server = server; |
aa9c2669 | 1049 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1050 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1051 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1052 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1053 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1054 | case NFS4_OPEN_CLAIM_NULL: |
1055 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1056 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1057 | p->o_arg.fh = NFS_FH(dir); | |
1058 | break; | |
1059 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1060 | case NFS4_OPEN_CLAIM_FH: | |
1061 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1062 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1063 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1064 | } |
536e43d1 | 1065 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1066 | __u32 verf[2]; |
d77d76ff | 1067 | |
e56e0b78 TM |
1068 | p->o_arg.u.attrs = &p->attrs; |
1069 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1070 | |
1071 | verf[0] = jiffies; | |
1072 | verf[1] = current->pid; | |
1073 | memcpy(p->o_arg.u.verifier.data, verf, | |
1074 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1075 | } |
cdd4e68b TM |
1076 | p->c_arg.fh = &p->o_res.fh; |
1077 | p->c_arg.stateid = &p->o_res.stateid; | |
1078 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1079 | nfs4_init_opendata_res(p); |
c6d00e63 | 1080 | kref_init(&p->kref); |
e56e0b78 | 1081 | return p; |
14c43f76 DQ |
1082 | |
1083 | err_free_label: | |
a49c2691 KM |
1084 | nfs4_label_free(p->a_label); |
1085 | err_free_f: | |
14c43f76 DQ |
1086 | nfs4_label_free(p->f_label); |
1087 | err_free_p: | |
e56e0b78 TM |
1088 | kfree(p); |
1089 | err: | |
1090 | dput(parent); | |
1091 | return NULL; | |
1092 | } | |
1093 | ||
c6d00e63 | 1094 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1095 | { |
c6d00e63 TM |
1096 | struct nfs4_opendata *p = container_of(kref, |
1097 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1098 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1099 | |
1100 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1101 | if (p->state != NULL) |
1102 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1103 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1104 | |
a49c2691 | 1105 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1106 | nfs4_label_free(p->f_label); |
1107 | ||
c6d00e63 | 1108 | dput(p->dir); |
82a2c1b7 AV |
1109 | dput(p->dentry); |
1110 | nfs_sb_deactive(sb); | |
6926afd1 | 1111 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1112 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1113 | kfree(p); |
1114 | } | |
1115 | ||
1116 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1117 | { | |
1118 | if (p != NULL) | |
1119 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1120 | } |
1121 | ||
06f814a3 TM |
1122 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1123 | { | |
06f814a3 TM |
1124 | int ret; |
1125 | ||
06f814a3 | 1126 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1127 | return ret; |
1128 | } | |
1129 | ||
dc0b027d | 1130 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1131 | { |
1132 | int ret = 0; | |
dc0b027d | 1133 | |
536e43d1 | 1134 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1135 | goto out; |
1136 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1137 | case FMODE_READ: |
88069f77 TM |
1138 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1139 | && state->n_rdonly != 0; | |
6ee41268 TM |
1140 | break; |
1141 | case FMODE_WRITE: | |
88069f77 TM |
1142 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1143 | && state->n_wronly != 0; | |
6ee41268 TM |
1144 | break; |
1145 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1146 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1147 | && state->n_rdwr != 0; | |
6ee41268 | 1148 | } |
dc0b027d | 1149 | out: |
6ee41268 TM |
1150 | return ret; |
1151 | } | |
1152 | ||
dc0b027d | 1153 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1154 | { |
652f89f6 TM |
1155 | if (delegation == NULL) |
1156 | return 0; | |
dc0b027d | 1157 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1158 | return 0; |
36319608 TM |
1159 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
1160 | return 0; | |
d25be546 TM |
1161 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1162 | return 0; | |
b7391f44 | 1163 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1164 | return 1; |
1165 | } | |
1166 | ||
dc0b027d | 1167 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1168 | { |
dc0b027d | 1169 | switch (fmode) { |
e7616923 TM |
1170 | case FMODE_WRITE: |
1171 | state->n_wronly++; | |
1172 | break; | |
1173 | case FMODE_READ: | |
1174 | state->n_rdonly++; | |
1175 | break; | |
1176 | case FMODE_READ|FMODE_WRITE: | |
1177 | state->n_rdwr++; | |
1178 | } | |
dc0b027d | 1179 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1180 | } |
1181 | ||
4f14c194 TM |
1182 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1183 | { | |
1184 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1185 | bool need_recover = false; | |
1186 | ||
1187 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1188 | need_recover = true; | |
1189 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1190 | need_recover = true; | |
1191 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1192 | need_recover = true; | |
1193 | if (need_recover) | |
1194 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1195 | } | |
1196 | ||
e999e80e TM |
1197 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1198 | nfs4_stateid *stateid) | |
1199 | { | |
1200 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1201 | return true; | |
4f14c194 TM |
1202 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1203 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1204 | return true; |
4f14c194 | 1205 | } |
e999e80e TM |
1206 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1207 | return true; | |
1208 | return false; | |
1209 | } | |
1210 | ||
f95549cf TM |
1211 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1212 | { | |
3c38cbe2 TM |
1213 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1214 | return; | |
f95549cf TM |
1215 | if (state->n_wronly) |
1216 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1217 | if (state->n_rdonly) | |
1218 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1219 | if (state->n_rdwr) | |
1220 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1221 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1222 | } |
1223 | ||
226056c5 TM |
1224 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
1225 | nfs4_stateid *stateid, fmode_t fmode) | |
003707c7 | 1226 | { |
226056c5 TM |
1227 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1228 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1229 | case FMODE_WRITE: | |
1230 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1231 | break; | |
1232 | case FMODE_READ: | |
1233 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1234 | break; | |
1235 | case 0: | |
1236 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1237 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1238 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1239 | } | |
1240 | if (stateid == NULL) | |
1241 | return; | |
f95549cf TM |
1242 | /* Handle races with OPEN */ |
1243 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid) || | |
1244 | !nfs4_stateid_is_newer(stateid, &state->open_stateid)) { | |
1245 | nfs_resync_open_stateid_locked(state); | |
226056c5 | 1246 | return; |
f95549cf | 1247 | } |
003707c7 | 1248 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1249 | nfs4_stateid_copy(&state->stateid, stateid); |
1250 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1251 | } |
1252 | ||
1253 | static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) | |
1254 | { | |
1255 | write_seqlock(&state->seqlock); | |
1256 | nfs_clear_open_stateid_locked(state, stateid, fmode); | |
1257 | write_sequnlock(&state->seqlock); | |
4f14c194 TM |
1258 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1259 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1260 | } |
1261 | ||
dc0b027d | 1262 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1263 | { |
dc0b027d | 1264 | switch (fmode) { |
003707c7 TM |
1265 | case FMODE_READ: |
1266 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1267 | break; | |
1268 | case FMODE_WRITE: | |
1269 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1270 | break; | |
1271 | case FMODE_READ|FMODE_WRITE: | |
1272 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1273 | } | |
e999e80e TM |
1274 | if (!nfs_need_update_open_stateid(state, stateid)) |
1275 | return; | |
1276 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1277 | nfs4_stateid_copy(&state->stateid, stateid); | |
1278 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1279 | } |
1280 | ||
dc0b027d | 1281 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1282 | { |
8bda4e4c TM |
1283 | /* |
1284 | * Protect the call to nfs4_state_set_mode_locked and | |
1285 | * serialise the stateid update | |
1286 | */ | |
1287 | write_seqlock(&state->seqlock); | |
003707c7 | 1288 | if (deleg_stateid != NULL) { |
f597c537 | 1289 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1290 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1291 | } | |
1292 | if (open_stateid != NULL) | |
dc0b027d | 1293 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1294 | write_sequnlock(&state->seqlock); |
1295 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1296 | update_open_stateflags(state, fmode); |
ec073428 | 1297 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1298 | } |
1299 | ||
dc0b027d | 1300 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1301 | { |
1302 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1303 | struct nfs_delegation *deleg_cur; | |
1304 | int ret = 0; | |
1305 | ||
dc0b027d | 1306 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1307 | |
1308 | rcu_read_lock(); | |
1309 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1310 | if (deleg_cur == NULL) | |
1311 | goto no_delegation; | |
1312 | ||
1313 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1314 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1315 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1316 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1317 | goto no_delegation_unlock; |
1318 | ||
1319 | if (delegation == NULL) | |
1320 | delegation = &deleg_cur->stateid; | |
f597c537 | 1321 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1322 | goto no_delegation_unlock; |
1323 | ||
b7391f44 | 1324 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1325 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1326 | ret = 1; |
1327 | no_delegation_unlock: | |
1328 | spin_unlock(&deleg_cur->lock); | |
1329 | no_delegation: | |
1330 | rcu_read_unlock(); | |
1331 | ||
1332 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1333 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1334 | ret = 1; |
1335 | } | |
4f14c194 TM |
1336 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1337 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1338 | |
1339 | return ret; | |
1340 | } | |
1341 | ||
39071e6f TM |
1342 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1343 | const nfs4_stateid *stateid) | |
1344 | { | |
1345 | struct nfs4_state *state = lsp->ls_state; | |
1346 | bool ret = false; | |
1347 | ||
1348 | spin_lock(&state->state_lock); | |
1349 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1350 | goto out_noupdate; | |
1351 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1352 | goto out_noupdate; | |
1353 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1354 | ret = true; | |
1355 | out_noupdate: | |
1356 | spin_unlock(&state->state_lock); | |
1357 | return ret; | |
1358 | } | |
34310430 | 1359 | |
dc0b027d | 1360 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1361 | { |
1362 | struct nfs_delegation *delegation; | |
1363 | ||
1364 | rcu_read_lock(); | |
1365 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1366 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1367 | rcu_read_unlock(); |
1368 | return; | |
1369 | } | |
1370 | rcu_read_unlock(); | |
57ec14c5 | 1371 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1372 | } |
1373 | ||
6ee41268 | 1374 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1375 | { |
1376 | struct nfs4_state *state = opendata->state; | |
1377 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1378 | struct nfs_delegation *delegation; | |
f448badd | 1379 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1380 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1381 | nfs4_stateid stateid; |
1382 | int ret = -EAGAIN; | |
1383 | ||
aac00a8d | 1384 | for (;;) { |
61beef75 | 1385 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1386 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1387 | update_open_stateflags(state, fmode); |
6ee41268 | 1388 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1389 | goto out_return_state; |
6ee41268 | 1390 | } |
61beef75 | 1391 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1392 | rcu_read_lock(); |
1393 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1394 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1395 | rcu_read_unlock(); |
aac00a8d | 1396 | break; |
34310430 | 1397 | } |
aac00a8d | 1398 | /* Save the delegation */ |
f597c537 | 1399 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1400 | rcu_read_unlock(); |
fa332941 | 1401 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1402 | if (!opendata->is_recover) { |
1403 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1404 | if (ret != 0) | |
1405 | goto out; | |
1406 | } | |
aac00a8d | 1407 | ret = -EAGAIN; |
34310430 TM |
1408 | |
1409 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1410 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1411 | goto out_return_state; |
aac00a8d | 1412 | } |
aac00a8d TM |
1413 | out: |
1414 | return ERR_PTR(ret); | |
1415 | out_return_state: | |
1416 | atomic_inc(&state->count); | |
1417 | return state; | |
1418 | } | |
1419 | ||
e23008ec AA |
1420 | static void |
1421 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1422 | { | |
1423 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1424 | struct nfs_delegation *delegation; | |
1425 | int delegation_flags = 0; | |
1426 | ||
1427 | rcu_read_lock(); | |
1428 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1429 | if (delegation) | |
1430 | delegation_flags = delegation->flags; | |
1431 | rcu_read_unlock(); | |
1432 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1433 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1434 | "returning a delegation for " | |
1435 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1436 | clp->cl_hostname); | |
1437 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1438 | nfs_inode_set_delegation(state->inode, | |
1439 | data->owner->so_cred, | |
1440 | &data->o_res); | |
1441 | else | |
1442 | nfs_inode_reclaim_delegation(state->inode, | |
1443 | data->owner->so_cred, | |
1444 | &data->o_res); | |
1445 | } | |
1446 | ||
1447 | /* | |
1448 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1449 | * and update the nfs4_state. | |
1450 | */ | |
1451 | static struct nfs4_state * | |
1452 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1453 | { | |
1454 | struct inode *inode = data->state->inode; | |
1455 | struct nfs4_state *state = data->state; | |
1456 | int ret; | |
1457 | ||
d2bfda2e WAA |
1458 | if (!data->rpc_done) { |
1459 | if (data->rpc_status) { | |
1460 | ret = data->rpc_status; | |
1461 | goto err; | |
1462 | } | |
1463 | /* cached opens have already been processed */ | |
1464 | goto update; | |
e23008ec AA |
1465 | } |
1466 | ||
e23008ec AA |
1467 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1468 | if (ret) | |
1469 | goto err; | |
1470 | ||
1471 | if (data->o_res.delegation_type != 0) | |
1472 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1473 | update: |
e23008ec AA |
1474 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1475 | data->o_arg.fmode); | |
d49f042a | 1476 | atomic_inc(&state->count); |
e23008ec AA |
1477 | |
1478 | return state; | |
1479 | err: | |
1480 | return ERR_PTR(ret); | |
1481 | ||
1482 | } | |
1483 | ||
1484 | static struct nfs4_state * | |
1485 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1486 | { |
1487 | struct inode *inode; | |
1488 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1489 | int ret; |
24ac23ab | 1490 | |
aac00a8d | 1491 | if (!data->rpc_done) { |
6ee41268 | 1492 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1493 | goto out; |
1494 | } | |
1495 | ||
1b370bc2 | 1496 | ret = -EAGAIN; |
24ac23ab | 1497 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1498 | goto err; |
1775fd3e | 1499 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1500 | ret = PTR_ERR(inode); |
03f28e3a | 1501 | if (IS_ERR(inode)) |
1b370bc2 TM |
1502 | goto err; |
1503 | ret = -ENOMEM; | |
24ac23ab TM |
1504 | state = nfs4_get_open_state(inode, data->owner); |
1505 | if (state == NULL) | |
1b370bc2 | 1506 | goto err_put_inode; |
e23008ec AA |
1507 | if (data->o_res.delegation_type != 0) |
1508 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1509 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1510 | data->o_arg.fmode); |
24ac23ab | 1511 | iput(inode); |
aac00a8d | 1512 | out: |
7aa262b5 | 1513 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1514 | return state; |
1b370bc2 TM |
1515 | err_put_inode: |
1516 | iput(inode); | |
1517 | err: | |
1518 | return ERR_PTR(ret); | |
24ac23ab TM |
1519 | } |
1520 | ||
e23008ec AA |
1521 | static struct nfs4_state * |
1522 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1523 | { | |
1524 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1525 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1526 | return _nfs4_opendata_to_nfs4_state(data); | |
1527 | } | |
1528 | ||
864472e9 TM |
1529 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1530 | { | |
1531 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1532 | struct nfs_open_context *ctx; | |
1533 | ||
1534 | spin_lock(&state->inode->i_lock); | |
1535 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1536 | if (ctx->state != state) | |
1537 | continue; | |
1538 | get_nfs_open_context(ctx); | |
1539 | spin_unlock(&state->inode->i_lock); | |
1540 | return ctx; | |
1541 | } | |
1542 | spin_unlock(&state->inode->i_lock); | |
1543 | return ERR_PTR(-ENOENT); | |
1544 | } | |
1545 | ||
4a1c0893 TM |
1546 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1547 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1548 | { |
1549 | struct nfs4_opendata *opendata; | |
1550 | ||
4a1c0893 | 1551 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1552 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1553 | if (opendata == NULL) |
1554 | return ERR_PTR(-ENOMEM); | |
1555 | opendata->state = state; | |
1556 | atomic_inc(&state->count); | |
1557 | return opendata; | |
1558 | } | |
1559 | ||
dc0b027d | 1560 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1561 | { |
2ced46c2 | 1562 | struct nfs4_state *newstate; |
864472e9 TM |
1563 | int ret; |
1564 | ||
39f897fd N |
1565 | if ((opendata->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR || |
1566 | opendata->o_arg.claim == NFS4_OPEN_CLAIM_DELEG_CUR_FH) && | |
1567 | (opendata->o_arg.u.delegation_type & fmode) != fmode) | |
1568 | /* This mode can't have been delegated, so we must have | |
1569 | * a valid open_stateid to cover it - not need to reclaim. | |
1570 | */ | |
1571 | return 0; | |
dc0b027d TM |
1572 | opendata->o_arg.open_flags = 0; |
1573 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1574 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1575 | NFS_SB(opendata->dentry->d_sb), | |
1576 | fmode, 0); | |
2ced46c2 TM |
1577 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1578 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1579 | nfs4_init_opendata_res(opendata); | |
b257957e | 1580 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1581 | if (ret != 0) |
1582 | return ret; | |
2ced46c2 | 1583 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1584 | if (IS_ERR(newstate)) |
1585 | return PTR_ERR(newstate); | |
643168c2 | 1586 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1587 | *res = newstate; |
864472e9 TM |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1592 | { | |
864472e9 | 1593 | struct nfs4_state *newstate; |
864472e9 TM |
1594 | int ret; |
1595 | ||
4f14c194 TM |
1596 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1597 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1598 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1599 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1600 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1601 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1602 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1603 | smp_rmb(); |
1604 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1605 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1606 | if (ret != 0) |
1607 | return ret; | |
2ced46c2 TM |
1608 | if (newstate != state) |
1609 | return -ESTALE; | |
864472e9 TM |
1610 | } |
1611 | if (state->n_wronly != 0) { | |
2ced46c2 | 1612 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1613 | if (ret != 0) |
1614 | return ret; | |
2ced46c2 TM |
1615 | if (newstate != state) |
1616 | return -ESTALE; | |
864472e9 TM |
1617 | } |
1618 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1619 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1620 | if (ret != 0) |
1621 | return ret; | |
2ced46c2 TM |
1622 | if (newstate != state) |
1623 | return -ESTALE; | |
864472e9 | 1624 | } |
1ac7e2fd TM |
1625 | /* |
1626 | * We may have performed cached opens for all three recoveries. | |
1627 | * Check if we need to update the current stateid. | |
1628 | */ | |
1629 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1630 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1631 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1632 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1633 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1634 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1635 | } |
864472e9 TM |
1636 | return 0; |
1637 | } | |
1638 | ||
1da177e4 LT |
1639 | /* |
1640 | * OPEN_RECLAIM: | |
1641 | * reclaim state on the server after a reboot. | |
1da177e4 | 1642 | */ |
539cd03a | 1643 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1644 | { |
1ac7e2fd | 1645 | struct nfs_delegation *delegation; |
864472e9 | 1646 | struct nfs4_opendata *opendata; |
dc0b027d | 1647 | fmode_t delegation_type = 0; |
1da177e4 LT |
1648 | int status; |
1649 | ||
4a1c0893 TM |
1650 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1651 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1652 | if (IS_ERR(opendata)) |
1653 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1654 | rcu_read_lock(); |
1655 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1656 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1657 | delegation_type = delegation->type; |
1ac7e2fd | 1658 | rcu_read_unlock(); |
864472e9 TM |
1659 | opendata->o_arg.u.delegation_type = delegation_type; |
1660 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1661 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1662 | return status; |
1663 | } | |
1664 | ||
539cd03a | 1665 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1666 | { |
1667 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1668 | struct nfs4_exception exception = { }; | |
1669 | int err; | |
1670 | do { | |
539cd03a | 1671 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1672 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1673 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1674 | continue; | |
168667c4 | 1675 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1676 | break; |
1677 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1678 | } while (exception.retry); |
1679 | return err; | |
1680 | } | |
1681 | ||
864472e9 TM |
1682 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1683 | { | |
1684 | struct nfs_open_context *ctx; | |
1685 | int ret; | |
1686 | ||
1687 | ctx = nfs4_state_find_open_context(state); | |
1688 | if (IS_ERR(ctx)) | |
91876b13 | 1689 | return -EAGAIN; |
539cd03a | 1690 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1691 | put_nfs_open_context(ctx); |
1692 | return ret; | |
1693 | } | |
1694 | ||
db4f2e63 | 1695 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1696 | { |
be76b5b6 TM |
1697 | switch (err) { |
1698 | default: | |
1699 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1700 | "%d.\n", __func__, err); | |
1701 | case 0: | |
1702 | case -ENOENT: | |
8eee52af | 1703 | case -EAGAIN: |
be76b5b6 TM |
1704 | case -ESTALE: |
1705 | break; | |
1706 | case -NFS4ERR_BADSESSION: | |
1707 | case -NFS4ERR_BADSLOT: | |
1708 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1709 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1710 | case -NFS4ERR_DEADSESSION: | |
1711 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1712 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1713 | return -EAGAIN; | |
1714 | case -NFS4ERR_STALE_CLIENTID: | |
1715 | case -NFS4ERR_STALE_STATEID: | |
1716 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1717 | case -NFS4ERR_EXPIRED: | |
1718 | /* Don't recall a delegation if it was lost */ | |
1719 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1720 | return -EAGAIN; | |
352297b9 CL |
1721 | case -NFS4ERR_MOVED: |
1722 | nfs4_schedule_migration_recovery(server); | |
1723 | return -EAGAIN; | |
8ef2f8d4 CL |
1724 | case -NFS4ERR_LEASE_MOVED: |
1725 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1726 | return -EAGAIN; | |
be76b5b6 TM |
1727 | case -NFS4ERR_DELEG_REVOKED: |
1728 | case -NFS4ERR_ADMIN_REVOKED: | |
1729 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1730 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1731 | nfs_inode_find_state_and_recover(state->inode, |
1732 | stateid); | |
1733 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1734 | return -EAGAIN; |
be76b5b6 TM |
1735 | case -NFS4ERR_DELAY: |
1736 | case -NFS4ERR_GRACE: | |
1737 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1738 | ssleep(1); | |
1739 | return -EAGAIN; | |
db4f2e63 TM |
1740 | case -ENOMEM: |
1741 | case -NFS4ERR_DENIED: | |
1742 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1743 | return 0; | |
be76b5b6 | 1744 | } |
1da177e4 LT |
1745 | return err; |
1746 | } | |
1747 | ||
db4f2e63 TM |
1748 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1749 | { | |
1750 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1751 | struct nfs4_opendata *opendata; | |
1752 | int err; | |
1753 | ||
1754 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1755 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1756 | if (IS_ERR(opendata)) | |
1757 | return PTR_ERR(opendata); | |
1758 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1759 | err = nfs4_open_recover(opendata, state); | |
1760 | nfs4_opendata_put(opendata); | |
1761 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1762 | } | |
1763 | ||
be05c860 CL |
1764 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1765 | { | |
1766 | struct nfs4_opendata *data = calldata; | |
1767 | ||
cb04ad2a PT |
1768 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1769 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1770 | } |
1771 | ||
cdd4e68b TM |
1772 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1773 | { | |
1774 | struct nfs4_opendata *data = calldata; | |
1775 | ||
17ead6c8 | 1776 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1777 | |
cdd4e68b | 1778 | data->rpc_status = task->tk_status; |
26e976a8 | 1779 | if (data->rpc_status == 0) { |
f597c537 | 1780 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1781 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1782 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1783 | data->rpc_done = 1; |
26e976a8 | 1784 | } |
cdd4e68b TM |
1785 | } |
1786 | ||
1787 | static void nfs4_open_confirm_release(void *calldata) | |
1788 | { | |
1789 | struct nfs4_opendata *data = calldata; | |
1790 | struct nfs4_state *state = NULL; | |
1791 | ||
1792 | /* If this request hasn't been cancelled, do nothing */ | |
1793 | if (data->cancelled == 0) | |
1794 | goto out_free; | |
1795 | /* In case of error, no cleanup! */ | |
3e309914 | 1796 | if (!data->rpc_done) |
cdd4e68b | 1797 | goto out_free; |
cdd4e68b | 1798 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1799 | if (!IS_ERR(state)) |
643168c2 | 1800 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1801 | out_free: |
c6d00e63 | 1802 | nfs4_opendata_put(data); |
cdd4e68b TM |
1803 | } |
1804 | ||
1805 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1806 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1807 | .rpc_call_done = nfs4_open_confirm_done, |
1808 | .rpc_release = nfs4_open_confirm_release, | |
1809 | }; | |
1810 | ||
1811 | /* | |
1812 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1813 | */ | |
1814 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1815 | { | |
2b0143b5 | 1816 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1817 | struct rpc_task *task; |
5138fde0 TM |
1818 | struct rpc_message msg = { |
1819 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1820 | .rpc_argp = &data->c_arg, | |
1821 | .rpc_resp = &data->c_res, | |
1822 | .rpc_cred = data->owner->so_cred, | |
1823 | }; | |
c970aa85 TM |
1824 | struct rpc_task_setup task_setup_data = { |
1825 | .rpc_client = server->client, | |
5138fde0 | 1826 | .rpc_message = &msg, |
c970aa85 TM |
1827 | .callback_ops = &nfs4_open_confirm_ops, |
1828 | .callback_data = data, | |
101070ca | 1829 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1830 | .flags = RPC_TASK_ASYNC, |
1831 | }; | |
1da177e4 LT |
1832 | int status; |
1833 | ||
17ead6c8 | 1834 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1835 | kref_get(&data->kref); |
3e309914 TM |
1836 | data->rpc_done = 0; |
1837 | data->rpc_status = 0; | |
5138fde0 | 1838 | data->timestamp = jiffies; |
c970aa85 | 1839 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1840 | if (IS_ERR(task)) |
cdd4e68b | 1841 | return PTR_ERR(task); |
cdd4e68b TM |
1842 | status = nfs4_wait_for_completion_rpc_task(task); |
1843 | if (status != 0) { | |
1844 | data->cancelled = 1; | |
1845 | smp_wmb(); | |
1846 | } else | |
1847 | status = data->rpc_status; | |
e6b3c4db | 1848 | rpc_put_task(task); |
1da177e4 LT |
1849 | return status; |
1850 | } | |
1851 | ||
24ac23ab | 1852 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1853 | { |
24ac23ab TM |
1854 | struct nfs4_opendata *data = calldata; |
1855 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1856 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1857 | |
24ac23ab | 1858 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1859 | goto out_wait; |
aac00a8d TM |
1860 | /* |
1861 | * Check if we still need to send an OPEN call, or if we can use | |
1862 | * a delegation instead. | |
1863 | */ | |
1864 | if (data->state != NULL) { | |
1865 | struct nfs_delegation *delegation; | |
1866 | ||
dc0b027d | 1867 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1868 | goto out_no_action; |
aac00a8d TM |
1869 | rcu_read_lock(); |
1870 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1871 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1872 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1873 | can_open_delegated(delegation, data->o_arg.fmode)) |
1874 | goto unlock_no_action; | |
aac00a8d TM |
1875 | rcu_read_unlock(); |
1876 | } | |
95b72eb0 | 1877 | /* Update client id. */ |
549b19cc | 1878 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1879 | switch (data->o_arg.claim) { |
1880 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1881 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1882 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1883 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1884 | case NFS4_OPEN_CLAIM_FH: |
1885 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1886 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1887 | } | |
26e976a8 | 1888 | data->timestamp = jiffies; |
035168ab | 1889 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1890 | &data->o_arg.seq_args, |
2240a9e2 TM |
1891 | &data->o_res.seq_res, |
1892 | task) != 0) | |
1893 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1894 | |
1895 | /* Set the create mode (note dependency on the session type) */ | |
1896 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1897 | if (data->o_arg.open_flags & O_EXCL) { | |
1898 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1899 | if (nfs4_has_persistent_session(clp)) | |
1900 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1901 | else if (clp->cl_mvops->minor_version > 0) | |
1902 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1903 | } | |
6ee41268 | 1904 | return; |
652f89f6 TM |
1905 | unlock_no_action: |
1906 | rcu_read_unlock(); | |
6ee41268 TM |
1907 | out_no_action: |
1908 | task->tk_action = NULL; | |
c8da19b9 | 1909 | out_wait: |
b75ad4cd | 1910 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1911 | } |
1912 | ||
24ac23ab TM |
1913 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1914 | { | |
1915 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1916 | |
24ac23ab | 1917 | data->rpc_status = task->tk_status; |
d898528c | 1918 | |
14516c3a TM |
1919 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1920 | return; | |
d898528c | 1921 | |
24ac23ab | 1922 | if (task->tk_status == 0) { |
807d66d8 TM |
1923 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1924 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1925 | case S_IFREG: |
1926 | break; | |
1927 | case S_IFLNK: | |
24ac23ab | 1928 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1929 | break; |
1930 | case S_IFDIR: | |
24ac23ab | 1931 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1932 | break; |
1933 | default: | |
24ac23ab | 1934 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1935 | } |
6f926b5b | 1936 | } |
26e976a8 | 1937 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1938 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1939 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1940 | } |
3e309914 | 1941 | data->rpc_done = 1; |
24ac23ab | 1942 | } |
6f926b5b | 1943 | |
24ac23ab TM |
1944 | static void nfs4_open_release(void *calldata) |
1945 | { | |
1946 | struct nfs4_opendata *data = calldata; | |
1947 | struct nfs4_state *state = NULL; | |
1948 | ||
1949 | /* If this request hasn't been cancelled, do nothing */ | |
1950 | if (data->cancelled == 0) | |
1951 | goto out_free; | |
1952 | /* In case of error, no cleanup! */ | |
3e309914 | 1953 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1954 | goto out_free; |
1955 | /* In case we need an open_confirm, no cleanup! */ | |
1956 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1957 | goto out_free; | |
24ac23ab | 1958 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1959 | if (!IS_ERR(state)) |
643168c2 | 1960 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1961 | out_free: |
c6d00e63 | 1962 | nfs4_opendata_put(data); |
24ac23ab TM |
1963 | } |
1964 | ||
1965 | static const struct rpc_call_ops nfs4_open_ops = { | |
1966 | .rpc_call_prepare = nfs4_open_prepare, | |
1967 | .rpc_call_done = nfs4_open_done, | |
1968 | .rpc_release = nfs4_open_release, | |
1969 | }; | |
1970 | ||
b257957e | 1971 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 1972 | { |
2b0143b5 | 1973 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
1974 | struct nfs_server *server = NFS_SERVER(dir); |
1975 | struct nfs_openargs *o_arg = &data->o_arg; | |
1976 | struct nfs_openres *o_res = &data->o_res; | |
1977 | struct rpc_task *task; | |
5138fde0 TM |
1978 | struct rpc_message msg = { |
1979 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1980 | .rpc_argp = o_arg, | |
1981 | .rpc_resp = o_res, | |
1982 | .rpc_cred = data->owner->so_cred, | |
1983 | }; | |
c970aa85 TM |
1984 | struct rpc_task_setup task_setup_data = { |
1985 | .rpc_client = server->client, | |
5138fde0 | 1986 | .rpc_message = &msg, |
c970aa85 TM |
1987 | .callback_ops = &nfs4_open_ops, |
1988 | .callback_data = data, | |
101070ca | 1989 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1990 | .flags = RPC_TASK_ASYNC, |
1991 | }; | |
24ac23ab TM |
1992 | int status; |
1993 | ||
a9c92d6b | 1994 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1995 | kref_get(&data->kref); |
3e309914 TM |
1996 | data->rpc_done = 0; |
1997 | data->rpc_status = 0; | |
2ced46c2 | 1998 | data->cancelled = 0; |
bdeca1b7 TM |
1999 | data->is_recover = 0; |
2000 | if (isrecover) { | |
8fe72bac | 2001 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2002 | data->is_recover = 1; |
2003 | } | |
c970aa85 | 2004 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2005 | if (IS_ERR(task)) |
2006 | return PTR_ERR(task); | |
2007 | status = nfs4_wait_for_completion_rpc_task(task); | |
2008 | if (status != 0) { | |
2009 | data->cancelled = 1; | |
2010 | smp_wmb(); | |
2011 | } else | |
2012 | status = data->rpc_status; | |
2013 | rpc_put_task(task); | |
2014 | ||
2015 | return status; | |
2016 | } | |
2017 | ||
2018 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2019 | { | |
2b0143b5 | 2020 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2021 | struct nfs_openres *o_res = &data->o_res; |
2022 | int status; | |
2023 | ||
2024 | status = nfs4_run_open_task(data, 1); | |
2025 | if (status != 0 || !data->rpc_done) | |
2026 | return status; | |
2027 | ||
6926afd1 TM |
2028 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2029 | ||
b257957e AB |
2030 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2031 | status = _nfs4_proc_open_confirm(data); | |
2032 | if (status != 0) | |
2033 | return status; | |
2034 | } | |
2035 | ||
2036 | return status; | |
2037 | } | |
2038 | ||
f3792d63 TM |
2039 | /* |
2040 | * Additional permission checks in order to distinguish between an | |
2041 | * open for read, and an open for execute. This works around the | |
2042 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2043 | * the same. | |
2044 | * Note that in the non-execute case, we want to turn off permission | |
2045 | * checking if we just created a new file (POSIX open() semantics). | |
2046 | */ | |
6168f62c WAA |
2047 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2048 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2049 | struct nfs4_state *state, fmode_t fmode, |
2050 | int openflags) | |
6168f62c WAA |
2051 | { |
2052 | struct nfs_access_entry cache; | |
2053 | u32 mask; | |
2054 | ||
2055 | /* access call failed or for some reason the server doesn't | |
2056 | * support any access modes -- defer access call until later */ | |
2057 | if (opendata->o_res.access_supported == 0) | |
2058 | return 0; | |
2059 | ||
2060 | mask = 0; | |
f3792d63 TM |
2061 | /* |
2062 | * Use openflags to check for exec, because fmode won't | |
2063 | * always have FMODE_EXEC set when file open for exec. | |
2064 | */ | |
f8d9a897 WAA |
2065 | if (openflags & __FMODE_EXEC) { |
2066 | /* ONLY check for exec rights */ | |
2067 | mask = MAY_EXEC; | |
f3792d63 | 2068 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2069 | mask = MAY_READ; |
6168f62c WAA |
2070 | |
2071 | cache.cred = cred; | |
2072 | cache.jiffies = jiffies; | |
2073 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2074 | nfs_access_add_cache(state->inode, &cache); | |
2075 | ||
bbd3a8ee | 2076 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2077 | return 0; |
2078 | ||
2079 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2080 | nfs4_close_state(state, fmode); | |
998f40b5 | 2081 | return -EACCES; |
6168f62c WAA |
2082 | } |
2083 | ||
b257957e AB |
2084 | /* |
2085 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2086 | */ | |
2087 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2088 | { | |
2b0143b5 | 2089 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2090 | struct nfs_server *server = NFS_SERVER(dir); |
2091 | struct nfs_openargs *o_arg = &data->o_arg; | |
2092 | struct nfs_openres *o_res = &data->o_res; | |
2093 | int status; | |
2094 | ||
2095 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2096 | if (!data->rpc_done) |
2097 | return status; | |
2098 | if (status != 0) { | |
2099 | if (status == -NFS4ERR_BADNAME && | |
2100 | !(o_arg->open_flags & O_CREAT)) | |
2101 | return -ENOENT; | |
24ac23ab | 2102 | return status; |
08ef7bd3 | 2103 | } |
24ac23ab | 2104 | |
6926afd1 TM |
2105 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2106 | ||
5bc2afc2 | 2107 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2108 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2109 | if (o_arg->open_flags & O_EXCL) |
2110 | data->file_created = 1; | |
2111 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2112 | data->file_created = 1; | |
2113 | } | |
0df5dd4a TM |
2114 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2115 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2116 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2117 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2118 | if (status != 0) |
24ac23ab | 2119 | return status; |
1da177e4 LT |
2120 | } |
2121 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2122 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2123 | return 0; |
1da177e4 LT |
2124 | } |
2125 | ||
d83217c1 AA |
2126 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2127 | { | |
2128 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2129 | } | |
2130 | ||
1da177e4 LT |
2131 | /* |
2132 | * OPEN_EXPIRED: | |
2133 | * reclaim state on the server after a network partition. | |
2134 | * Assumes caller holds the appropriate lock | |
2135 | */ | |
539cd03a | 2136 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2137 | { |
e56e0b78 | 2138 | struct nfs4_opendata *opendata; |
864472e9 | 2139 | int ret; |
1da177e4 | 2140 | |
4a1c0893 | 2141 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2142 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2143 | if (IS_ERR(opendata)) |
2144 | return PTR_ERR(opendata); | |
864472e9 | 2145 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2146 | if (ret == -ESTALE) |
3d4ff43d | 2147 | d_drop(ctx->dentry); |
c6d00e63 | 2148 | nfs4_opendata_put(opendata); |
864472e9 | 2149 | return ret; |
1da177e4 LT |
2150 | } |
2151 | ||
a9ed2e25 | 2152 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2153 | { |
539cd03a | 2154 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2155 | struct nfs4_exception exception = { }; |
2156 | int err; | |
2157 | ||
2158 | do { | |
539cd03a | 2159 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2160 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2161 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2162 | continue; | |
a9ed2e25 TM |
2163 | switch (err) { |
2164 | default: | |
2165 | goto out; | |
2166 | case -NFS4ERR_GRACE: | |
2167 | case -NFS4ERR_DELAY: | |
2168 | nfs4_handle_exception(server, err, &exception); | |
2169 | err = 0; | |
2170 | } | |
202b50dc | 2171 | } while (exception.retry); |
a9ed2e25 | 2172 | out: |
202b50dc TM |
2173 | return err; |
2174 | } | |
2175 | ||
1da177e4 LT |
2176 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2177 | { | |
1da177e4 | 2178 | struct nfs_open_context *ctx; |
864472e9 | 2179 | int ret; |
1da177e4 | 2180 | |
864472e9 TM |
2181 | ctx = nfs4_state_find_open_context(state); |
2182 | if (IS_ERR(ctx)) | |
91876b13 | 2183 | return -EAGAIN; |
539cd03a | 2184 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2185 | put_nfs_open_context(ctx); |
2186 | return ret; | |
1da177e4 LT |
2187 | } |
2188 | ||
4dfd4f7a TM |
2189 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2190 | { | |
2191 | nfs_remove_bad_delegation(state->inode); | |
2192 | write_seqlock(&state->seqlock); | |
2193 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2194 | write_sequnlock(&state->seqlock); | |
2195 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2196 | } | |
2197 | ||
2198 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2199 | { | |
2200 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2201 | nfs_finish_clear_delegation_stateid(state); | |
2202 | } | |
2203 | ||
2204 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2205 | { | |
2206 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2207 | nfs40_clear_delegation_stateid(state); | |
2208 | return nfs4_open_expired(sp, state); | |
2209 | } | |
2210 | ||
f062eb6c | 2211 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2212 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2213 | { |
f062eb6c | 2214 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2215 | nfs4_stateid stateid; |
ab7cb0df | 2216 | struct nfs_delegation *delegation; |
0c116cad TM |
2217 | struct rpc_cred *cred; |
2218 | int status; | |
3e60ffdd | 2219 | |
ab7cb0df TM |
2220 | /* Get the delegation credential for use by test/free_stateid */ |
2221 | rcu_read_lock(); | |
2222 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2223 | if (delegation == NULL) { |
ab7cb0df | 2224 | rcu_read_unlock(); |
0c116cad TM |
2225 | return; |
2226 | } | |
2227 | ||
2228 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2229 | cred = get_rpccred(delegation->cred); | |
2230 | rcu_read_unlock(); | |
2231 | status = nfs41_test_stateid(server, &stateid, cred); | |
2232 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2233 | |
3e60ffdd CL |
2234 | if (status != NFS_OK) { |
2235 | /* Free the stateid unless the server explicitly | |
2236 | * informs us the stateid is unrecognized. */ | |
2237 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2238 | nfs41_free_stateid(server, &stateid, cred); |
2239 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2240 | } |
ab7cb0df | 2241 | |
0c116cad | 2242 | put_rpccred(cred); |
3e60ffdd CL |
2243 | } |
2244 | ||
2245 | /** | |
2246 | * nfs41_check_open_stateid - possibly free an open stateid | |
2247 | * | |
2248 | * @state: NFSv4 state for an inode | |
2249 | * | |
2250 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2251 | * Otherwise a negative NFS4ERR value is returned. | |
2252 | */ | |
2253 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2254 | { | |
2255 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2256 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2257 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2258 | int status; |
2259 | ||
2260 | /* If a state reset has been done, test_stateid is unneeded */ | |
2261 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2262 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2263 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2264 | return -NFS4ERR_BAD_STATEID; | |
2265 | ||
ab7cb0df | 2266 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2267 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2268 | if (status != NFS_OK) { |
2269 | /* Free the stateid unless the server explicitly | |
2270 | * informs us the stateid is unrecognized. */ | |
2271 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2272 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2273 | |
2274 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2275 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2276 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2277 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2278 | } |
2279 | return status; | |
2280 | } | |
2281 | ||
2282 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2283 | { | |
eb64cf96 | 2284 | int status; |
b01dd1d8 | 2285 | |
0c116cad | 2286 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2287 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2288 | if (status != NFS_OK) |
2289 | status = nfs4_open_expired(sp, state); | |
2290 | return status; | |
f062eb6c BS |
2291 | } |
2292 | #endif | |
2293 | ||
aa53ed54 JL |
2294 | /* |
2295 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2296 | * fields corresponding to attributes that were used to store the verifier. | |
2297 | * Make sure we clobber those fields in the later setattr call | |
2298 | */ | |
2299 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2300 | { | |
2301 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2302 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2303 | sattr->ia_valid |= ATTR_ATIME; | |
2304 | ||
2305 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2306 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2307 | sattr->ia_valid |= ATTR_MTIME; | |
2308 | } | |
2309 | ||
c21443c2 TM |
2310 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2311 | fmode_t fmode, | |
2312 | int flags, | |
3efb9722 | 2313 | struct nfs_open_context *ctx) |
c21443c2 TM |
2314 | { |
2315 | struct nfs4_state_owner *sp = opendata->owner; | |
2316 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2317 | struct dentry *dentry; |
c21443c2 TM |
2318 | struct nfs4_state *state; |
2319 | unsigned int seq; | |
2320 | int ret; | |
2321 | ||
2322 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2323 | ||
2324 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2325 | if (ret != 0) |
c21443c2 TM |
2326 | goto out; |
2327 | ||
2328 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2329 | ret = PTR_ERR(state); | |
2330 | if (IS_ERR(state)) | |
2331 | goto out; | |
2332 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2333 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2334 | ||
275bb307 | 2335 | dentry = opendata->dentry; |
2b0143b5 | 2336 | if (d_really_is_negative(dentry)) { |
275bb307 TM |
2337 | /* FIXME: Is this d_drop() ever needed? */ |
2338 | d_drop(dentry); | |
2339 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2340 | if (dentry == NULL) { | |
2341 | dentry = opendata->dentry; | |
2342 | } else if (dentry != ctx->dentry) { | |
2343 | dput(ctx->dentry); | |
2344 | ctx->dentry = dget(dentry); | |
2345 | } | |
2346 | nfs_set_verifier(dentry, | |
2b0143b5 | 2347 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2348 | } |
2349 | ||
c21443c2 TM |
2350 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2351 | if (ret != 0) | |
2352 | goto out; | |
2353 | ||
3efb9722 | 2354 | ctx->state = state; |
2b0143b5 | 2355 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2356 | nfs_inode_attach_open_context(ctx); |
2357 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2358 | nfs4_schedule_stateid_recovery(server, state); | |
2359 | } | |
c21443c2 TM |
2360 | out: |
2361 | return ret; | |
2362 | } | |
2363 | ||
1da177e4 | 2364 | /* |
24ac23ab | 2365 | * Returns a referenced nfs4_state |
1da177e4 | 2366 | */ |
82be417a | 2367 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2368 | struct nfs_open_context *ctx, |
82be417a AA |
2369 | int flags, |
2370 | struct iattr *sattr, | |
5bc2afc2 TM |
2371 | struct nfs4_label *label, |
2372 | int *opened) | |
1da177e4 LT |
2373 | { |
2374 | struct nfs4_state_owner *sp; | |
2375 | struct nfs4_state *state = NULL; | |
2376 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2377 | struct nfs4_opendata *opendata; |
4197a055 TM |
2378 | struct dentry *dentry = ctx->dentry; |
2379 | struct rpc_cred *cred = ctx->cred; | |
2380 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2381 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2382 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2383 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2384 | int status; |
1da177e4 LT |
2385 | |
2386 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2387 | status = -ENOMEM; |
d1e284d5 TM |
2388 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2389 | if (sp == NULL) { | |
1da177e4 LT |
2390 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2391 | goto out_err; | |
2392 | } | |
58d9714a TM |
2393 | status = nfs4_recover_expired_lease(server); |
2394 | if (status != 0) | |
b4454fe1 | 2395 | goto err_put_state_owner; |
2b0143b5 DH |
2396 | if (d_really_is_positive(dentry)) |
2397 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2398 | status = -ENOMEM; |
2b0143b5 | 2399 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2400 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2401 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2402 | label, claim, GFP_KERNEL); |
e56e0b78 | 2403 | if (opendata == NULL) |
95d35cb4 | 2404 | goto err_put_state_owner; |
1da177e4 | 2405 | |
14c43f76 DQ |
2406 | if (label) { |
2407 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2408 | if (IS_ERR(olabel)) { | |
2409 | status = PTR_ERR(olabel); | |
2410 | goto err_opendata_put; | |
2411 | } | |
2412 | } | |
2413 | ||
e911b815 TM |
2414 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2415 | if (!opendata->f_attr.mdsthreshold) { | |
2416 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2417 | if (!opendata->f_attr.mdsthreshold) | |
2418 | goto err_free_label; | |
2419 | } | |
1549210f | 2420 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2421 | } |
2b0143b5 DH |
2422 | if (d_really_is_positive(dentry)) |
2423 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2424 | |
3efb9722 | 2425 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2426 | if (status != 0) |
14c43f76 | 2427 | goto err_free_label; |
3efb9722 | 2428 | state = ctx->state; |
6168f62c | 2429 | |
efcbc04e | 2430 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2431 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
0ab64e0e TM |
2432 | nfs4_exclusive_attrset(opendata, sattr); |
2433 | ||
2434 | nfs_fattr_init(opendata->o_res.f_attr); | |
2435 | status = nfs4_do_setattr(state->inode, cred, | |
2436 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2437 | state, label, olabel); |
2438 | if (status == 0) { | |
f044636d TM |
2439 | nfs_setattr_update_inode(state->inode, sattr, |
2440 | opendata->o_res.f_attr); | |
aa9c2669 | 2441 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2442 | } |
0ab64e0e | 2443 | } |
5bc2afc2 TM |
2444 | if (opendata->file_created) |
2445 | *opened |= FILE_CREATED; | |
82be417a | 2446 | |
e911b815 | 2447 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2448 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2449 | opendata->f_attr.mdsthreshold = NULL; |
2450 | } | |
82be417a | 2451 | |
14c43f76 DQ |
2452 | nfs4_label_free(olabel); |
2453 | ||
c6d00e63 | 2454 | nfs4_opendata_put(opendata); |
1da177e4 | 2455 | nfs4_put_state_owner(sp); |
1da177e4 | 2456 | return 0; |
14c43f76 DQ |
2457 | err_free_label: |
2458 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2459 | err_opendata_put: |
2460 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2461 | err_put_state_owner: |
2462 | nfs4_put_state_owner(sp); | |
1da177e4 | 2463 | out_err: |
1da177e4 LT |
2464 | return status; |
2465 | } | |
2466 | ||
2467 | ||
82be417a | 2468 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2469 | struct nfs_open_context *ctx, |
82be417a AA |
2470 | int flags, |
2471 | struct iattr *sattr, | |
5bc2afc2 TM |
2472 | struct nfs4_label *label, |
2473 | int *opened) | |
1da177e4 | 2474 | { |
49f9a0fa | 2475 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2476 | struct nfs4_exception exception = { }; |
2477 | struct nfs4_state *res; | |
2478 | int status; | |
2479 | ||
2480 | do { | |
5bc2afc2 | 2481 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2482 | res = ctx->state; |
42113a75 | 2483 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2484 | if (status == 0) |
2485 | break; | |
2486 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2487 | * book-keeping w.r.t. state-changing operations | |
2488 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2489 | * It is actually a sign of a bug on the client or on the server. | |
2490 | * | |
2491 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2492 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2493 | * have unhashed the old state_owner for us, and that we can |
2494 | * therefore safely retry using a new one. We should still warn | |
2495 | * the user though... | |
2496 | */ | |
2497 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2498 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2499 | " returned a bad sequence-id error!\n", |
2500 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2501 | exception.retry = 1; |
2502 | continue; | |
2503 | } | |
550f5747 TM |
2504 | /* |
2505 | * BAD_STATEID on OPEN means that the server cancelled our | |
2506 | * state before it received the OPEN_CONFIRM. | |
2507 | * Recover by retrying the request as per the discussion | |
2508 | * on Page 181 of RFC3530. | |
2509 | */ | |
2510 | if (status == -NFS4ERR_BAD_STATEID) { | |
2511 | exception.retry = 1; | |
2512 | continue; | |
2513 | } | |
aac00a8d TM |
2514 | if (status == -EAGAIN) { |
2515 | /* We must have found a delegation */ | |
2516 | exception.retry = 1; | |
2517 | continue; | |
2518 | } | |
49f9a0fa TM |
2519 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2520 | continue; | |
2521 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2522 | status, &exception)); |
2523 | } while (exception.retry); | |
2524 | return res; | |
2525 | } | |
2526 | ||
659bfcd6 TM |
2527 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2528 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2529 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2530 | struct nfs4_label *olabel) | |
1da177e4 | 2531 | { |
3e4f6290 | 2532 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2533 | struct nfs_setattrargs arg = { |
3e4f6290 | 2534 | .fh = NFS_FH(inode), |
1da177e4 LT |
2535 | .iap = sattr, |
2536 | .server = server, | |
2537 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2538 | .label = ilabel, |
1da177e4 LT |
2539 | }; |
2540 | struct nfs_setattrres res = { | |
2541 | .fattr = fattr, | |
1775fd3e | 2542 | .label = olabel, |
1da177e4 LT |
2543 | .server = server, |
2544 | }; | |
2545 | struct rpc_message msg = { | |
659bfcd6 TM |
2546 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2547 | .rpc_argp = &arg, | |
2548 | .rpc_resp = &res, | |
2549 | .rpc_cred = cred, | |
1da177e4 | 2550 | }; |
26e976a8 | 2551 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2552 | fmode_t fmode; |
2553 | bool truncate; | |
65e4308d | 2554 | int status; |
1da177e4 | 2555 | |
aa9c2669 DQ |
2556 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2557 | if (ilabel) | |
2558 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2559 | ||
0e574af1 | 2560 | nfs_fattr_init(fattr); |
1da177e4 | 2561 | |
ee3ae84e TM |
2562 | /* Servers should only apply open mode checks for file size changes */ |
2563 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2564 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2565 | ||
2566 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2567 | /* Use that stateid */ | |
0418dae1 | 2568 | } else if (truncate && state != NULL) { |
2a369153 TM |
2569 | struct nfs_lockowner lockowner = { |
2570 | .l_owner = current->files, | |
2571 | .l_pid = current->tgid, | |
2572 | }; | |
0418dae1 TM |
2573 | if (!nfs4_valid_open_stateid(state)) |
2574 | return -EBADF; | |
2575 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2576 | &lockowner) == -EIO) | |
2577 | return -EBADF; | |
08e9eac4 | 2578 | } else |
f597c537 | 2579 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2580 | |
7c513058 | 2581 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2582 | if (status == 0 && state != NULL) |
2583 | renew_lease(server, timestamp); | |
65e4308d | 2584 | return status; |
1da177e4 LT |
2585 | } |
2586 | ||
659bfcd6 TM |
2587 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2588 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2589 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2590 | struct nfs4_label *olabel) | |
1da177e4 | 2591 | { |
3e4f6290 | 2592 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2593 | struct nfs4_exception exception = { |
2594 | .state = state, | |
3114ea7a | 2595 | .inode = inode, |
a1d0b5ee | 2596 | }; |
1da177e4 LT |
2597 | int err; |
2598 | do { | |
1775fd3e | 2599 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2600 | trace_nfs4_setattr(inode, err); |
451146be TM |
2601 | switch (err) { |
2602 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2603 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2604 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2605 | "applying open mode checks to " | |
2606 | "a SETATTR that is not " | |
2607 | "changing file size.\n", | |
2608 | server->nfs_client->cl_hostname); | |
2609 | } | |
451146be TM |
2610 | if (state && !(state->state & FMODE_WRITE)) { |
2611 | err = -EBADF; | |
2612 | if (sattr->ia_valid & ATTR_OPEN) | |
2613 | err = -EACCES; | |
2614 | goto out; | |
2615 | } | |
2616 | } | |
2617 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2618 | } while (exception.retry); |
451146be | 2619 | out: |
1da177e4 LT |
2620 | return err; |
2621 | } | |
2622 | ||
2623 | struct nfs4_closedata { | |
2624 | struct inode *inode; | |
2625 | struct nfs4_state *state; | |
2626 | struct nfs_closeargs arg; | |
2627 | struct nfs_closeres res; | |
516a6af6 | 2628 | struct nfs_fattr fattr; |
26e976a8 | 2629 | unsigned long timestamp; |
f7e8917a FI |
2630 | bool roc; |
2631 | u32 roc_barrier; | |
1da177e4 LT |
2632 | }; |
2633 | ||
963d8fe5 | 2634 | static void nfs4_free_closedata(void *data) |
9512135d | 2635 | { |
963d8fe5 TM |
2636 | struct nfs4_closedata *calldata = data; |
2637 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2638 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2639 | |
f7e8917a FI |
2640 | if (calldata->roc) |
2641 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2642 | nfs4_put_open_state(calldata->state); |
2643 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2644 | nfs4_put_state_owner(sp); |
322b2b90 | 2645 | nfs_sb_deactive(sb); |
9512135d TM |
2646 | kfree(calldata); |
2647 | } | |
2648 | ||
963d8fe5 | 2649 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2650 | { |
963d8fe5 | 2651 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2652 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2653 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2654 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2655 | |
a3ca5651 | 2656 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2657 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2658 | return; | |
42113a75 | 2659 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2660 | /* hmm. we are done with the inode, and in the process of freeing |
2661 | * the state_owner. we keep this around to process errors | |
2662 | */ | |
1da177e4 LT |
2663 | switch (task->tk_status) { |
2664 | case 0: | |
412f6c4c | 2665 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2666 | if (calldata->roc) |
f7e8917a FI |
2667 | pnfs_roc_set_barrier(state->inode, |
2668 | calldata->roc_barrier); | |
26e976a8 | 2669 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2670 | break; |
69794ad7 | 2671 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2672 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2673 | case -NFS4ERR_OLD_STATEID: |
2674 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2675 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2676 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2677 | &state->open_stateid)) { |
566fcec6 TM |
2678 | rpc_restart_call_prepare(task); |
2679 | goto out_release; | |
2680 | } | |
dc0b027d | 2681 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2682 | break; |
1da177e4 | 2683 | default: |
8478eaa1 | 2684 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2685 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2686 | goto out_release; |
2687 | } | |
1da177e4 | 2688 | } |
412f6c4c | 2689 | nfs_clear_open_stateid(state, res_stateid, calldata->arg.fmode); |
69794ad7 | 2690 | out_release: |
72211dbe | 2691 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2692 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2693 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2694 | } |
2695 | ||
4ce70ada | 2696 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2697 | { |
4ce70ada | 2698 | struct nfs4_closedata *calldata = data; |
9512135d | 2699 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2700 | struct inode *inode = calldata->inode; |
aee7af35 | 2701 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2702 | int call_close = 0; |
9512135d | 2703 | |
a3ca5651 | 2704 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2705 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2706 | goto out_wait; |
003707c7 | 2707 | |
88069f77 | 2708 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2709 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2710 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2711 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2712 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2713 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2714 | /* Calculate the change in open mode */ |
cd9288ff | 2715 | calldata->arg.fmode = 0; |
e7616923 | 2716 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2717 | if (state->n_rdonly == 0) |
2718 | call_close |= is_rdonly; | |
2719 | else if (is_rdonly) | |
2720 | calldata->arg.fmode |= FMODE_READ; | |
2721 | if (state->n_wronly == 0) | |
2722 | call_close |= is_wronly; | |
2723 | else if (is_wronly) | |
2724 | calldata->arg.fmode |= FMODE_WRITE; | |
2725 | } else if (is_rdwr) | |
2726 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2727 | ||
2728 | if (calldata->arg.fmode == 0) | |
2729 | call_close |= is_rdwr; | |
2730 | ||
5d422301 TM |
2731 | if (!nfs4_valid_open_stateid(state)) |
2732 | call_close = 0; | |
4cecb76f | 2733 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2734 | |
2735 | if (!call_close) { | |
963d8fe5 | 2736 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2737 | goto out_no_action; |
9512135d | 2738 | } |
88069f77 | 2739 | |
3c13cb5b | 2740 | if (calldata->arg.fmode == 0) |
88069f77 | 2741 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2742 | if (calldata->roc) |
2743 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2744 | ||
6ae37339 TM |
2745 | calldata->arg.share_access = |
2746 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2747 | calldata->arg.fmode, 0); | |
88069f77 | 2748 | |
516a6af6 | 2749 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2750 | calldata->timestamp = jiffies; |
7fdab069 | 2751 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2752 | &calldata->arg.seq_args, |
2753 | &calldata->res.seq_res, | |
2240a9e2 TM |
2754 | task) != 0) |
2755 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2756 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2757 | return; |
2758 | out_no_action: | |
2759 | task->tk_action = NULL; | |
2760 | out_wait: | |
2761 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2762 | } |
2763 | ||
963d8fe5 | 2764 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2765 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2766 | .rpc_call_done = nfs4_close_done, |
2767 | .rpc_release = nfs4_free_closedata, | |
2768 | }; | |
2769 | ||
fe08c546 PT |
2770 | static bool nfs4_roc(struct inode *inode) |
2771 | { | |
40dd4b7a | 2772 | if (!nfs_have_layout(inode)) |
fe08c546 | 2773 | return false; |
fe08c546 PT |
2774 | return pnfs_roc(inode); |
2775 | } | |
2776 | ||
1da177e4 LT |
2777 | /* |
2778 | * It is possible for data to be read/written from a mem-mapped file | |
2779 | * after the sys_close call (which hits the vfs layer as a flush). | |
2780 | * This means that we can't safely call nfsv4 close on a file until | |
2781 | * the inode is cleared. This in turn means that we are not good | |
2782 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2783 | * share state even when we are done with one of the three share | |
2784 | * stateid's in the inode. | |
2785 | * | |
2786 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2787 | */ | |
1f7977c1 | 2788 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2789 | { |
4a35bd41 | 2790 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2791 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2792 | struct nfs4_closedata *calldata; |
b39e625b TM |
2793 | struct nfs4_state_owner *sp = state->owner; |
2794 | struct rpc_task *task; | |
5138fde0 TM |
2795 | struct rpc_message msg = { |
2796 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2797 | .rpc_cred = state->owner->so_cred, | |
2798 | }; | |
c970aa85 TM |
2799 | struct rpc_task_setup task_setup_data = { |
2800 | .rpc_client = server->client, | |
5138fde0 | 2801 | .rpc_message = &msg, |
c970aa85 | 2802 | .callback_ops = &nfs4_close_ops, |
101070ca | 2803 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2804 | .flags = RPC_TASK_ASYNC, |
2805 | }; | |
9512135d | 2806 | int status = -ENOMEM; |
1da177e4 | 2807 | |
fa940720 WAA |
2808 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2809 | &task_setup_data.rpc_client, &msg); | |
2810 | ||
8535b2be | 2811 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2812 | if (calldata == NULL) |
9512135d | 2813 | goto out; |
a9c92d6b | 2814 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2815 | calldata->inode = state->inode; |
1da177e4 | 2816 | calldata->state = state; |
4a35bd41 | 2817 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2818 | /* Serialization for the sequence id */ |
63f5f796 TM |
2819 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2820 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2821 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2822 | goto out_free_calldata; |
dc0b027d | 2823 | calldata->arg.fmode = 0; |
a65318bf | 2824 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2825 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2826 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2827 | calldata->res.server = server; |
fe08c546 | 2828 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2829 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2830 | |
1174dd1f TM |
2831 | msg.rpc_argp = &calldata->arg; |
2832 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2833 | task_setup_data.callback_data = calldata; |
2834 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2835 | if (IS_ERR(task)) |
2836 | return PTR_ERR(task); | |
a49c3c77 TM |
2837 | status = 0; |
2838 | if (wait) | |
2839 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2840 | rpc_put_task(task); |
a49c3c77 | 2841 | return status; |
9512135d TM |
2842 | out_free_calldata: |
2843 | kfree(calldata); | |
2844 | out: | |
b39e625b TM |
2845 | nfs4_put_open_state(state); |
2846 | nfs4_put_state_owner(sp); | |
9512135d | 2847 | return status; |
1da177e4 LT |
2848 | } |
2849 | ||
2b484297 | 2850 | static struct inode * |
5bc2afc2 TM |
2851 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2852 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2853 | { |
1da177e4 | 2854 | struct nfs4_state *state; |
aa9c2669 DQ |
2855 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2856 | ||
2857 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2858 | |
565277f6 | 2859 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2860 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2861 | |
2862 | nfs4_label_release_security(label); | |
2863 | ||
f46e0bd3 TM |
2864 | if (IS_ERR(state)) |
2865 | return ERR_CAST(state); | |
275bb307 | 2866 | return state->inode; |
1da177e4 LT |
2867 | } |
2868 | ||
1185a552 | 2869 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2870 | { |
2871 | if (ctx->state == NULL) | |
2872 | return; | |
2873 | if (is_sync) | |
643168c2 | 2874 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2875 | else |
643168c2 | 2876 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2877 | } |
1da177e4 | 2878 | |
b944dba3 TM |
2879 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2880 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 2881 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 2882 | |
1da177e4 LT |
2883 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2884 | { | |
43652ad5 BH |
2885 | struct nfs4_server_caps_arg args = { |
2886 | .fhandle = fhandle, | |
2887 | }; | |
1da177e4 LT |
2888 | struct nfs4_server_caps_res res = {}; |
2889 | struct rpc_message msg = { | |
2890 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2891 | .rpc_argp = &args, |
1da177e4 LT |
2892 | .rpc_resp = &res, |
2893 | }; | |
2894 | int status; | |
2895 | ||
7c513058 | 2896 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2897 | if (status == 0) { |
b944dba3 TM |
2898 | /* Sanity check the server answers */ |
2899 | switch (server->nfs_client->cl_minorversion) { | |
2900 | case 0: | |
2901 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
2902 | res.attr_bitmask[2] = 0; | |
2903 | break; | |
2904 | case 1: | |
2905 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
2906 | break; | |
2907 | case 2: | |
2908 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
2909 | } | |
1da177e4 | 2910 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
2911 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2912 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2913 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2914 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
2915 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
2916 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
2917 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
2918 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
2919 | server->caps |= NFS_CAP_ACLS; |
2920 | if (res.has_links != 0) | |
2921 | server->caps |= NFS_CAP_HARDLINKS; | |
2922 | if (res.has_symlinks != 0) | |
2923 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2924 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2925 | server->caps |= NFS_CAP_FILEID; | |
2926 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2927 | server->caps |= NFS_CAP_MODE; | |
2928 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2929 | server->caps |= NFS_CAP_NLINK; | |
2930 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2931 | server->caps |= NFS_CAP_OWNER; | |
2932 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2933 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2934 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2935 | server->caps |= NFS_CAP_ATIME; | |
2936 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2937 | server->caps |= NFS_CAP_CTIME; | |
2938 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2939 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2940 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2941 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2942 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2943 | #endif | |
2944 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2945 | sizeof(server->attr_bitmask)); | |
b944dba3 | 2946 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 2947 | |
a65318bf TM |
2948 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2949 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2950 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 2951 | server->cache_consistency_bitmask[2] = 0; |
1da177e4 | 2952 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2953 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2954 | } |
cccef3b9 | 2955 | |
1da177e4 LT |
2956 | return status; |
2957 | } | |
2958 | ||
55a97593 | 2959 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2960 | { |
2961 | struct nfs4_exception exception = { }; | |
2962 | int err; | |
2963 | do { | |
2964 | err = nfs4_handle_exception(server, | |
2965 | _nfs4_server_capabilities(server, fhandle), | |
2966 | &exception); | |
2967 | } while (exception.retry); | |
2968 | return err; | |
2969 | } | |
2970 | ||
2971 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2972 | struct nfs_fsinfo *info) | |
2973 | { | |
aa9c2669 | 2974 | u32 bitmask[3]; |
1da177e4 | 2975 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 2976 | .bitmask = bitmask, |
1da177e4 LT |
2977 | }; |
2978 | struct nfs4_lookup_res res = { | |
2979 | .server = server, | |
0e574af1 | 2980 | .fattr = info->fattr, |
1da177e4 LT |
2981 | .fh = fhandle, |
2982 | }; | |
2983 | struct rpc_message msg = { | |
2984 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2985 | .rpc_argp = &args, | |
2986 | .rpc_resp = &res, | |
2987 | }; | |
008f55d0 | 2988 | |
aa9c2669 DQ |
2989 | bitmask[0] = nfs4_fattr_bitmap[0]; |
2990 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
2991 | /* | |
2992 | * Process the label in the upcoming getfattr | |
2993 | */ | |
2994 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
2995 | ||
0e574af1 | 2996 | nfs_fattr_init(info->fattr); |
7c513058 | 2997 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2998 | } |
2999 | ||
3000 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3001 | struct nfs_fsinfo *info) | |
3002 | { | |
3003 | struct nfs4_exception exception = { }; | |
3004 | int err; | |
3005 | do { | |
fb8a5ba8 | 3006 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3007 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3008 | switch (err) { |
3009 | case 0: | |
3010 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3011 | goto out; |
fb8a5ba8 BS |
3012 | default: |
3013 | err = nfs4_handle_exception(server, err, &exception); | |
3014 | } | |
1da177e4 | 3015 | } while (exception.retry); |
05e9cfb4 | 3016 | out: |
1da177e4 LT |
3017 | return err; |
3018 | } | |
3019 | ||
8f70e95f BS |
3020 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3021 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3022 | { | |
c2190661 TM |
3023 | struct rpc_auth_create_args auth_args = { |
3024 | .pseudoflavor = flavor, | |
3025 | }; | |
8f70e95f BS |
3026 | struct rpc_auth *auth; |
3027 | int ret; | |
3028 | ||
c2190661 | 3029 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3030 | if (IS_ERR(auth)) { |
75bc8821 | 3031 | ret = -EACCES; |
8f70e95f BS |
3032 | goto out; |
3033 | } | |
3034 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3035 | out: |
3036 | return ret; | |
3037 | } | |
3038 | ||
9a744ba3 CL |
3039 | /* |
3040 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3041 | * | |
3042 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3043 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3044 | * | |
3045 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3046 | * negative errno value. | |
3047 | */ | |
801a16dc | 3048 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3049 | struct nfs_fsinfo *info) |
1da177e4 | 3050 | { |
9a744ba3 CL |
3051 | /* Per 3530bis 15.33.5 */ |
3052 | static const rpc_authflavor_t flav_array[] = { | |
3053 | RPC_AUTH_GSS_KRB5P, | |
3054 | RPC_AUTH_GSS_KRB5I, | |
3055 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3056 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3057 | RPC_AUTH_NULL, |
3058 | }; | |
3059 | int status = -EPERM; | |
3060 | size_t i; | |
6a1a1e34 | 3061 | |
4d4b69dd WAA |
3062 | if (server->auth_info.flavor_len > 0) { |
3063 | /* try each flavor specified by user */ | |
3064 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3065 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3066 | server->auth_info.flavors[i]); | |
3067 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3068 | continue; | |
3069 | break; | |
3070 | } | |
3071 | } else { | |
3072 | /* no flavors specified by user, try default list */ | |
3073 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3074 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3075 | flav_array[i]); | |
3076 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3077 | continue; | |
3078 | break; | |
3079 | } | |
8f70e95f | 3080 | } |
9a744ba3 | 3081 | |
fb8a5ba8 BS |
3082 | /* |
3083 | * -EACCESS could mean that the user doesn't have correct permissions | |
3084 | * to access the mount. It could also mean that we tried to mount | |
3085 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3086 | * existing mount programs don't handle -EACCES very well so it should | |
3087 | * be mapped to -EPERM instead. | |
3088 | */ | |
3089 | if (status == -EACCES) | |
3090 | status = -EPERM; | |
801a16dc BS |
3091 | return status; |
3092 | } | |
3093 | ||
2ed4b95b CL |
3094 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3095 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3096 | { | |
3097 | int mv = server->nfs_client->cl_minorversion; | |
3098 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3099 | } | |
3100 | ||
3101 | /** | |
3102 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3103 | * @server: initialized nfs_server handle | |
3104 | * @fhandle: we fill in the pseudo-fs root file handle | |
3105 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3106 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3107 | * |
3108 | * Returns zero on success, or a negative errno. | |
801a16dc | 3109 | */ |
3028eb2b | 3110 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3111 | struct nfs_fsinfo *info, |
3112 | bool auth_probe) | |
801a16dc | 3113 | { |
c7757074 | 3114 | int status = 0; |
2ed4b95b | 3115 | |
c7757074 | 3116 | if (!auth_probe) |
5e6b1990 | 3117 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3118 | |
3119 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
2ed4b95b CL |
3120 | status = nfs4_do_find_root_sec(server, fhandle, info); |
3121 | ||
1da177e4 LT |
3122 | if (status == 0) |
3123 | status = nfs4_server_capabilities(server, fhandle); | |
3124 | if (status == 0) | |
3125 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3126 | |
c12e87f4 | 3127 | return nfs4_map_errors(status); |
1da177e4 LT |
3128 | } |
3129 | ||
bae36241 BS |
3130 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3131 | struct nfs_fsinfo *info) | |
3132 | { | |
3133 | int error; | |
3134 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3135 | struct nfs4_label *label = NULL; |
bae36241 BS |
3136 | |
3137 | error = nfs4_server_capabilities(server, mntfh); | |
3138 | if (error < 0) { | |
3139 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3140 | return error; | |
3141 | } | |
3142 | ||
14c43f76 DQ |
3143 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3144 | if (IS_ERR(label)) | |
3145 | return PTR_ERR(label); | |
3146 | ||
1775fd3e | 3147 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3148 | if (error < 0) { |
3149 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3150 | goto err_free_label; |
bae36241 BS |
3151 | } |
3152 | ||
3153 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3154 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3155 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3156 | ||
14c43f76 DQ |
3157 | err_free_label: |
3158 | nfs4_label_free(label); | |
3159 | ||
bae36241 BS |
3160 | return error; |
3161 | } | |
3162 | ||
6b97fd3d MN |
3163 | /* |
3164 | * Get locations and (maybe) other attributes of a referral. | |
3165 | * Note that we'll actually follow the referral later when | |
3166 | * we detect fsid mismatch in inode revalidation | |
3167 | */ | |
f05d147f BS |
3168 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3169 | const struct qstr *name, struct nfs_fattr *fattr, | |
3170 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3171 | { |
3172 | int status = -ENOMEM; | |
3173 | struct page *page = NULL; | |
3174 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3175 | |
3176 | page = alloc_page(GFP_KERNEL); | |
3177 | if (page == NULL) | |
3178 | goto out; | |
3179 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3180 | if (locations == NULL) | |
3181 | goto out; | |
3182 | ||
f05d147f | 3183 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3184 | if (status != 0) |
3185 | goto out; | |
519ae255 CL |
3186 | |
3187 | /* | |
3188 | * If the fsid didn't change, this is a migration event, not a | |
3189 | * referral. Cause us to drop into the exception handler, which | |
3190 | * will kick off migration recovery. | |
3191 | */ | |
6b97fd3d | 3192 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3193 | dprintk("%s: server did not return a different fsid for" |
3194 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3195 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3196 | goto out; |
3197 | } | |
533eb461 AA |
3198 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3199 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3200 | |
533eb461 | 3201 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3202 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3203 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3204 | out: | |
3205 | if (page) | |
3206 | __free_page(page); | |
5d7ca35a | 3207 | kfree(locations); |
6b97fd3d MN |
3208 | return status; |
3209 | } | |
3210 | ||
1775fd3e DQ |
3211 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3212 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3213 | { |
3214 | struct nfs4_getattr_arg args = { | |
3215 | .fh = fhandle, | |
3216 | .bitmask = server->attr_bitmask, | |
3217 | }; | |
3218 | struct nfs4_getattr_res res = { | |
3219 | .fattr = fattr, | |
1775fd3e | 3220 | .label = label, |
1da177e4 LT |
3221 | .server = server, |
3222 | }; | |
3223 | struct rpc_message msg = { | |
3224 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3225 | .rpc_argp = &args, | |
3226 | .rpc_resp = &res, | |
3227 | }; | |
aa9c2669 DQ |
3228 | |
3229 | args.bitmask = nfs4_bitmask(server, label); | |
3230 | ||
0e574af1 | 3231 | nfs_fattr_init(fattr); |
7c513058 | 3232 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3233 | } |
3234 | ||
1775fd3e DQ |
3235 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3236 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3237 | { |
3238 | struct nfs4_exception exception = { }; | |
3239 | int err; | |
3240 | do { | |
b5f875a9 TM |
3241 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3242 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3243 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3244 | &exception); |
3245 | } while (exception.retry); | |
3246 | return err; | |
3247 | } | |
3248 | ||
3249 | /* | |
3250 | * The file is not closed if it is opened due to the a request to change | |
3251 | * the size of the file. The open call will not be needed once the | |
3252 | * VFS layer lookup-intents are implemented. | |
3253 | * | |
3254 | * Close is called when the inode is destroyed. | |
3255 | * If we haven't opened the file for O_WRONLY, we | |
3256 | * need to in the size_change case to obtain a stateid. | |
3257 | * | |
3258 | * Got race? | |
3259 | * Because OPEN is always done by name in nfsv4, it is | |
3260 | * possible that we opened a different file by the same | |
3261 | * name. We can recognize this race condition, but we | |
3262 | * can't do anything about it besides returning an error. | |
3263 | * | |
3264 | * This will be fixed with VFS changes (lookup-intent). | |
3265 | */ | |
3266 | static int | |
3267 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3268 | struct iattr *sattr) | |
3269 | { | |
2b0143b5 | 3270 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3271 | struct rpc_cred *cred = NULL; |
d530838b | 3272 | struct nfs4_state *state = NULL; |
14c43f76 | 3273 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3274 | int status; |
3275 | ||
88ac815c PT |
3276 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3277 | sattr->ia_valid & ATTR_SIZE && | |
3278 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3279 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3280 | |
0e574af1 | 3281 | nfs_fattr_init(fattr); |
1da177e4 | 3282 | |
2669940d AA |
3283 | /* Deal with open(O_TRUNC) */ |
3284 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3285 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3286 | |
3287 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3288 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3289 | return 0; |
3290 | ||
d530838b | 3291 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3292 | if (sattr->ia_valid & ATTR_FILE) { |
3293 | struct nfs_open_context *ctx; | |
3294 | ||
3295 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3296 | if (ctx) { |
3297 | cred = ctx->cred; | |
3298 | state = ctx->state; | |
3299 | } | |
659bfcd6 | 3300 | } |
08e9eac4 | 3301 | |
14c43f76 DQ |
3302 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3303 | if (IS_ERR(label)) | |
3304 | return PTR_ERR(label); | |
3305 | ||
3306 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3307 | if (status == 0) { |
f044636d | 3308 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3309 | nfs_setsecurity(inode, fattr, label); |
3310 | } | |
14c43f76 | 3311 | nfs4_label_free(label); |
1da177e4 LT |
3312 | return status; |
3313 | } | |
3314 | ||
0c2e53f1 TM |
3315 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3316 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3317 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3318 | { |
0c2e53f1 | 3319 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3320 | int status; |
3321 | struct nfs4_lookup_arg args = { | |
3322 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3323 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3324 | .name = name, |
3325 | }; | |
3326 | struct nfs4_lookup_res res = { | |
3327 | .server = server, | |
3328 | .fattr = fattr, | |
aa9c2669 | 3329 | .label = label, |
2b3de441 DH |
3330 | .fh = fhandle, |
3331 | }; | |
3332 | struct rpc_message msg = { | |
3333 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3334 | .rpc_argp = &args, | |
3335 | .rpc_resp = &res, | |
3336 | }; | |
3337 | ||
aa9c2669 DQ |
3338 | args.bitmask = nfs4_bitmask(server, label); |
3339 | ||
2b3de441 DH |
3340 | nfs_fattr_init(fattr); |
3341 | ||
1da177e4 | 3342 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3343 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3344 | dprintk("NFS reply lookup: %d\n", status); |
3345 | return status; | |
3346 | } | |
3347 | ||
72de53ec | 3348 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3349 | { |
7ebb9315 | 3350 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3351 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3352 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3353 | fattr->nlink = 2; | |
3354 | } | |
3355 | ||
72de53ec BS |
3356 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3357 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3358 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3359 | { |
3360 | struct nfs4_exception exception = { }; | |
72de53ec | 3361 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3362 | int err; |
3363 | do { | |
1775fd3e | 3364 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3365 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3366 | switch (err) { |
08ef7bd3 | 3367 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3368 | err = -ENOENT; |
3369 | goto out; | |
0c2e53f1 | 3370 | case -NFS4ERR_MOVED: |
f05d147f | 3371 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3372 | if (err == -NFS4ERR_MOVED) |
3373 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3374 | goto out; |
0c2e53f1 | 3375 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3376 | err = -EPERM; |
3377 | if (client != *clnt) | |
3378 | goto out; | |
66b06860 | 3379 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3380 | if (IS_ERR(client)) |
3381 | return PTR_ERR(client); | |
3382 | ||
3383 | exception.retry = 1; | |
3384 | break; | |
3385 | default: | |
3386 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3387 | } |
1da177e4 | 3388 | } while (exception.retry); |
72de53ec BS |
3389 | |
3390 | out: | |
3391 | if (err == 0) | |
3392 | *clnt = client; | |
3393 | else if (client != *clnt) | |
3394 | rpc_shutdown_client(client); | |
3395 | ||
1da177e4 LT |
3396 | return err; |
3397 | } | |
3398 | ||
80a16b21 | 3399 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3400 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3401 | struct nfs4_label *label) | |
72de53ec BS |
3402 | { |
3403 | int status; | |
3404 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3405 | ||
1775fd3e | 3406 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3407 | if (client != NFS_CLIENT(dir)) { |
3408 | rpc_shutdown_client(client); | |
3409 | nfs_fixup_secinfo_attributes(fattr); | |
3410 | } | |
3411 | return status; | |
3412 | } | |
3413 | ||
f05d147f BS |
3414 | struct rpc_clnt * |
3415 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3416 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3417 | { | |
b72888cb | 3418 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3419 | int status; |
f05d147f | 3420 | |
1775fd3e | 3421 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3422 | if (status < 0) |
f05d147f | 3423 | return ERR_PTR(status); |
b72888cb | 3424 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3425 | } |
3426 | ||
1da177e4 LT |
3427 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3428 | { | |
76b32999 | 3429 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3430 | struct nfs4_accessargs args = { |
3431 | .fh = NFS_FH(inode), | |
a4980e78 | 3432 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3433 | }; |
3434 | struct nfs4_accessres res = { | |
3435 | .server = server, | |
1da177e4 | 3436 | }; |
1da177e4 LT |
3437 | struct rpc_message msg = { |
3438 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3439 | .rpc_argp = &args, | |
3440 | .rpc_resp = &res, | |
3441 | .rpc_cred = entry->cred, | |
3442 | }; | |
3443 | int mode = entry->mask; | |
aa9c2669 | 3444 | int status = 0; |
1da177e4 LT |
3445 | |
3446 | /* | |
3447 | * Determine which access bits we want to ask for... | |
3448 | */ | |
3449 | if (mode & MAY_READ) | |
3450 | args.access |= NFS4_ACCESS_READ; | |
3451 | if (S_ISDIR(inode->i_mode)) { | |
3452 | if (mode & MAY_WRITE) | |
3453 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3454 | if (mode & MAY_EXEC) | |
3455 | args.access |= NFS4_ACCESS_LOOKUP; | |
3456 | } else { | |
3457 | if (mode & MAY_WRITE) | |
3458 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3459 | if (mode & MAY_EXEC) | |
3460 | args.access |= NFS4_ACCESS_EXECUTE; | |
3461 | } | |
c407d41a TM |
3462 | |
3463 | res.fattr = nfs_alloc_fattr(); | |
3464 | if (res.fattr == NULL) | |
3465 | return -ENOMEM; | |
3466 | ||
7c513058 | 3467 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3468 | if (!status) { |
6168f62c | 3469 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3470 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3471 | } |
c407d41a | 3472 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3473 | return status; |
3474 | } | |
3475 | ||
3476 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3477 | { | |
3478 | struct nfs4_exception exception = { }; | |
3479 | int err; | |
3480 | do { | |
c1578b76 TM |
3481 | err = _nfs4_proc_access(inode, entry); |
3482 | trace_nfs4_access(inode, err); | |
3483 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3484 | &exception); |
3485 | } while (exception.retry); | |
3486 | return err; | |
3487 | } | |
3488 | ||
3489 | /* | |
3490 | * TODO: For the time being, we don't try to get any attributes | |
3491 | * along with any of the zero-copy operations READ, READDIR, | |
3492 | * READLINK, WRITE. | |
3493 | * | |
3494 | * In the case of the first three, we want to put the GETATTR | |
3495 | * after the read-type operation -- this is because it is hard | |
3496 | * to predict the length of a GETATTR response in v4, and thus | |
3497 | * align the READ data correctly. This means that the GETATTR | |
3498 | * may end up partially falling into the page cache, and we should | |
3499 | * shift it into the 'tail' of the xdr_buf before processing. | |
3500 | * To do this efficiently, we need to know the total length | |
3501 | * of data received, which doesn't seem to be available outside | |
3502 | * of the RPC layer. | |
3503 | * | |
3504 | * In the case of WRITE, we also want to put the GETATTR after | |
3505 | * the operation -- in this case because we want to make sure | |
140150db | 3506 | * we get the post-operation mtime and size. |
1da177e4 LT |
3507 | * |
3508 | * Both of these changes to the XDR layer would in fact be quite | |
3509 | * minor, but I decided to leave them for a subsequent patch. | |
3510 | */ | |
3511 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3512 | unsigned int pgbase, unsigned int pglen) | |
3513 | { | |
3514 | struct nfs4_readlink args = { | |
3515 | .fh = NFS_FH(inode), | |
3516 | .pgbase = pgbase, | |
3517 | .pglen = pglen, | |
3518 | .pages = &page, | |
3519 | }; | |
f50c7000 | 3520 | struct nfs4_readlink_res res; |
1da177e4 LT |
3521 | struct rpc_message msg = { |
3522 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3523 | .rpc_argp = &args, | |
f50c7000 | 3524 | .rpc_resp = &res, |
1da177e4 LT |
3525 | }; |
3526 | ||
7c513058 | 3527 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3528 | } |
3529 | ||
3530 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3531 | unsigned int pgbase, unsigned int pglen) | |
3532 | { | |
3533 | struct nfs4_exception exception = { }; | |
3534 | int err; | |
3535 | do { | |
c1578b76 TM |
3536 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3537 | trace_nfs4_readlink(inode, err); | |
3538 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3539 | &exception); |
3540 | } while (exception.retry); | |
3541 | return err; | |
3542 | } | |
3543 | ||
1da177e4 | 3544 | /* |
8867fe58 | 3545 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3546 | */ |
1da177e4 LT |
3547 | static int |
3548 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3549 | int flags) |
1da177e4 | 3550 | { |
aa9c2669 | 3551 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3552 | struct nfs_open_context *ctx; |
1da177e4 | 3553 | struct nfs4_state *state; |
5bc2afc2 | 3554 | int opened = 0; |
1da177e4 LT |
3555 | int status = 0; |
3556 | ||
8867fe58 MS |
3557 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3558 | if (IS_ERR(ctx)) | |
3559 | return PTR_ERR(ctx); | |
3560 | ||
aa9c2669 DQ |
3561 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3562 | ||
a8a5da99 | 3563 | sattr->ia_mode &= ~current_umask(); |
5bc2afc2 | 3564 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); |
1da177e4 LT |
3565 | if (IS_ERR(state)) { |
3566 | status = PTR_ERR(state); | |
c0204fd2 | 3567 | goto out; |
1da177e4 | 3568 | } |
1da177e4 | 3569 | out: |
aa9c2669 | 3570 | nfs4_label_release_security(ilabel); |
8867fe58 | 3571 | put_nfs_open_context(ctx); |
1da177e4 LT |
3572 | return status; |
3573 | } | |
3574 | ||
3575 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3576 | { | |
16e42959 | 3577 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3578 | struct nfs_removeargs args = { |
1da177e4 | 3579 | .fh = NFS_FH(dir), |
26fe5750 | 3580 | .name = *name, |
16e42959 | 3581 | }; |
4fdc17b2 | 3582 | struct nfs_removeres res = { |
16e42959 | 3583 | .server = server, |
1da177e4 | 3584 | }; |
1da177e4 | 3585 | struct rpc_message msg = { |
4fdc17b2 TM |
3586 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3587 | .rpc_argp = &args, | |
3588 | .rpc_resp = &res, | |
1da177e4 | 3589 | }; |
778d2817 | 3590 | int status; |
1da177e4 | 3591 | |
7c513058 | 3592 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3593 | if (status == 0) |
16e42959 | 3594 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3595 | return status; |
3596 | } | |
3597 | ||
3598 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3599 | { | |
3600 | struct nfs4_exception exception = { }; | |
3601 | int err; | |
3602 | do { | |
078ea3df TM |
3603 | err = _nfs4_proc_remove(dir, name); |
3604 | trace_nfs4_remove(dir, name, err); | |
3605 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3606 | &exception); |
3607 | } while (exception.retry); | |
3608 | return err; | |
3609 | } | |
3610 | ||
e4eff1a6 | 3611 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3612 | { |
e4eff1a6 TM |
3613 | struct nfs_server *server = NFS_SERVER(dir); |
3614 | struct nfs_removeargs *args = msg->rpc_argp; | |
3615 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3616 | |
e4eff1a6 | 3617 | res->server = server; |
1da177e4 | 3618 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3619 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3620 | |
3621 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3622 | } |
3623 | ||
34e137cc BS |
3624 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3625 | { | |
d9afbd1b TM |
3626 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3627 | &data->args.seq_args, | |
3628 | &data->res.seq_res, | |
3629 | task); | |
1da177e4 LT |
3630 | } |
3631 | ||
e4eff1a6 | 3632 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3633 | { |
078ea3df TM |
3634 | struct nfs_unlinkdata *data = task->tk_calldata; |
3635 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3636 | |
14516c3a TM |
3637 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3638 | return 0; | |
8478eaa1 N |
3639 | if (nfs4_async_handle_error(task, res->server, NULL, |
3640 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3641 | return 0; |
3642 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3643 | return 1; |
1da177e4 LT |
3644 | } |
3645 | ||
d3d4152a JL |
3646 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3647 | { | |
3648 | struct nfs_server *server = NFS_SERVER(dir); | |
3649 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3650 | struct nfs_renameres *res = msg->rpc_resp; | |
3651 | ||
3652 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3653 | res->server = server; |
a9c92d6b | 3654 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3655 | } |
3656 | ||
c6bfa1a1 BS |
3657 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3658 | { | |
d9afbd1b TM |
3659 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3660 | &data->args.seq_args, | |
3661 | &data->res.seq_res, | |
3662 | task); | |
d3d4152a JL |
3663 | } |
3664 | ||
3665 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3666 | struct inode *new_dir) | |
3667 | { | |
fbc6f7c2 TM |
3668 | struct nfs_renamedata *data = task->tk_calldata; |
3669 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3670 | |
3671 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3672 | return 0; | |
8478eaa1 | 3673 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3674 | return 0; |
3675 | ||
3676 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3677 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3678 | return 1; |
3679 | } | |
3680 | ||
1da177e4 LT |
3681 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3682 | { | |
91ba2eee | 3683 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3684 | struct nfs4_link_arg arg = { |
3685 | .fh = NFS_FH(inode), | |
3686 | .dir_fh = NFS_FH(dir), | |
3687 | .name = name, | |
91ba2eee TM |
3688 | .bitmask = server->attr_bitmask, |
3689 | }; | |
91ba2eee TM |
3690 | struct nfs4_link_res res = { |
3691 | .server = server, | |
1775fd3e | 3692 | .label = NULL, |
1da177e4 | 3693 | }; |
1da177e4 LT |
3694 | struct rpc_message msg = { |
3695 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3696 | .rpc_argp = &arg, | |
91ba2eee | 3697 | .rpc_resp = &res, |
1da177e4 | 3698 | }; |
136f2627 TM |
3699 | int status = -ENOMEM; |
3700 | ||
3701 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3702 | if (res.fattr == NULL) |
136f2627 | 3703 | goto out; |
1da177e4 | 3704 | |
14c43f76 DQ |
3705 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3706 | if (IS_ERR(res.label)) { | |
3707 | status = PTR_ERR(res.label); | |
3708 | goto out; | |
3709 | } | |
aa9c2669 | 3710 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3711 | |
7c513058 | 3712 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3713 | if (!status) { |
3714 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3715 | status = nfs_post_op_update_inode(inode, res.fattr); |
3716 | if (!status) | |
3717 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3718 | } |
14c43f76 DQ |
3719 | |
3720 | ||
3721 | nfs4_label_free(res.label); | |
3722 | ||
136f2627 | 3723 | out: |
136f2627 | 3724 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3725 | return status; |
3726 | } | |
3727 | ||
3728 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3729 | { | |
3730 | struct nfs4_exception exception = { }; | |
3731 | int err; | |
3732 | do { | |
3733 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3734 | _nfs4_proc_link(inode, dir, name), | |
3735 | &exception); | |
3736 | } while (exception.retry); | |
3737 | return err; | |
3738 | } | |
3739 | ||
57dc9a57 TM |
3740 | struct nfs4_createdata { |
3741 | struct rpc_message msg; | |
3742 | struct nfs4_create_arg arg; | |
3743 | struct nfs4_create_res res; | |
3744 | struct nfs_fh fh; | |
3745 | struct nfs_fattr fattr; | |
1775fd3e | 3746 | struct nfs4_label *label; |
57dc9a57 TM |
3747 | }; |
3748 | ||
3749 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3750 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3751 | { | |
3752 | struct nfs4_createdata *data; | |
3753 | ||
3754 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3755 | if (data != NULL) { | |
3756 | struct nfs_server *server = NFS_SERVER(dir); | |
3757 | ||
14c43f76 DQ |
3758 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3759 | if (IS_ERR(data->label)) | |
3760 | goto out_free; | |
3761 | ||
57dc9a57 TM |
3762 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3763 | data->msg.rpc_argp = &data->arg; | |
3764 | data->msg.rpc_resp = &data->res; | |
3765 | data->arg.dir_fh = NFS_FH(dir); | |
3766 | data->arg.server = server; | |
3767 | data->arg.name = name; | |
3768 | data->arg.attrs = sattr; | |
3769 | data->arg.ftype = ftype; | |
aa9c2669 | 3770 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3771 | data->res.server = server; |
3772 | data->res.fh = &data->fh; | |
3773 | data->res.fattr = &data->fattr; | |
1775fd3e | 3774 | data->res.label = data->label; |
57dc9a57 | 3775 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3776 | } |
3777 | return data; | |
14c43f76 DQ |
3778 | out_free: |
3779 | kfree(data); | |
3780 | return NULL; | |
57dc9a57 TM |
3781 | } |
3782 | ||
3783 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3784 | { | |
7c513058 | 3785 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3786 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3787 | if (status == 0) { |
3788 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3789 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3790 | } |
3791 | return status; | |
3792 | } | |
3793 | ||
3794 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3795 | { | |
14c43f76 | 3796 | nfs4_label_free(data->label); |
57dc9a57 TM |
3797 | kfree(data); |
3798 | } | |
3799 | ||
4f390c15 | 3800 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3801 | struct page *page, unsigned int len, struct iattr *sattr, |
3802 | struct nfs4_label *label) | |
1da177e4 | 3803 | { |
57dc9a57 TM |
3804 | struct nfs4_createdata *data; |
3805 | int status = -ENAMETOOLONG; | |
1da177e4 | 3806 | |
94a6d753 | 3807 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3808 | goto out; |
4f390c15 | 3809 | |
57dc9a57 TM |
3810 | status = -ENOMEM; |
3811 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3812 | if (data == NULL) | |
3813 | goto out; | |
3814 | ||
3815 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3816 | data->arg.u.symlink.pages = &page; | |
3817 | data->arg.u.symlink.len = len; | |
1775fd3e | 3818 | data->arg.label = label; |
1da177e4 | 3819 | |
57dc9a57 TM |
3820 | status = nfs4_do_create(dir, dentry, data); |
3821 | ||
3822 | nfs4_free_createdata(data); | |
3823 | out: | |
1da177e4 LT |
3824 | return status; |
3825 | } | |
3826 | ||
4f390c15 | 3827 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3828 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3829 | { |
3830 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3831 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3832 | int err; |
aa9c2669 DQ |
3833 | |
3834 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3835 | ||
1da177e4 | 3836 | do { |
078ea3df TM |
3837 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3838 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3839 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3840 | &exception); |
3841 | } while (exception.retry); | |
aa9c2669 DQ |
3842 | |
3843 | nfs4_label_release_security(label); | |
1da177e4 LT |
3844 | return err; |
3845 | } | |
3846 | ||
3847 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3848 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3849 | { |
57dc9a57 TM |
3850 | struct nfs4_createdata *data; |
3851 | int status = -ENOMEM; | |
1da177e4 | 3852 | |
57dc9a57 TM |
3853 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3854 | if (data == NULL) | |
3855 | goto out; | |
3856 | ||
1775fd3e | 3857 | data->arg.label = label; |
57dc9a57 TM |
3858 | status = nfs4_do_create(dir, dentry, data); |
3859 | ||
3860 | nfs4_free_createdata(data); | |
3861 | out: | |
1da177e4 LT |
3862 | return status; |
3863 | } | |
3864 | ||
3865 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3866 | struct iattr *sattr) | |
3867 | { | |
3868 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3869 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3870 | int err; |
a8a5da99 | 3871 | |
aa9c2669 DQ |
3872 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3873 | ||
a8a5da99 | 3874 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3875 | do { |
078ea3df TM |
3876 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3877 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3878 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3879 | &exception); |
3880 | } while (exception.retry); | |
aa9c2669 DQ |
3881 | nfs4_label_release_security(label); |
3882 | ||
1da177e4 LT |
3883 | return err; |
3884 | } | |
3885 | ||
3886 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3887 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 3888 | { |
2b0143b5 | 3889 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
3890 | struct nfs4_readdir_arg args = { |
3891 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3892 | .pages = pages, |
1da177e4 LT |
3893 | .pgbase = 0, |
3894 | .count = count, | |
2b0143b5 | 3895 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 3896 | .plus = plus, |
1da177e4 LT |
3897 | }; |
3898 | struct nfs4_readdir_res res; | |
3899 | struct rpc_message msg = { | |
3900 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3901 | .rpc_argp = &args, | |
3902 | .rpc_resp = &res, | |
3903 | .rpc_cred = cred, | |
3904 | }; | |
3905 | int status; | |
3906 | ||
6de1472f AV |
3907 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
3908 | dentry, | |
eadf4598 | 3909 | (unsigned long long)cookie); |
c3f52af3 | 3910 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3911 | res.pgbase = args.pgbase; |
7c513058 | 3912 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3913 | if (status >= 0) { |
c3f52af3 | 3914 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3915 | status += args.pgbase; |
3916 | } | |
c4812998 TM |
3917 | |
3918 | nfs_invalidate_atime(dir); | |
3919 | ||
3110ff80 | 3920 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3921 | return status; |
3922 | } | |
3923 | ||
3924 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3925 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3926 | { |
3927 | struct nfs4_exception exception = { }; | |
3928 | int err; | |
3929 | do { | |
c1578b76 TM |
3930 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3931 | pages, count, plus); | |
2b0143b5 DH |
3932 | trace_nfs4_readdir(d_inode(dentry), err); |
3933 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
3934 | &exception); |
3935 | } while (exception.retry); | |
3936 | return err; | |
3937 | } | |
3938 | ||
3939 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3940 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3941 | { |
57dc9a57 TM |
3942 | struct nfs4_createdata *data; |
3943 | int mode = sattr->ia_mode; | |
3944 | int status = -ENOMEM; | |
1da177e4 | 3945 | |
57dc9a57 TM |
3946 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3947 | if (data == NULL) | |
3948 | goto out; | |
3949 | ||
1da177e4 | 3950 | if (S_ISFIFO(mode)) |
57dc9a57 | 3951 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3952 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3953 | data->arg.ftype = NF4BLK; |
3954 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3955 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3956 | } |
3957 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3958 | data->arg.ftype = NF4CHR; |
3959 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3960 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3961 | } else if (!S_ISSOCK(mode)) { |
3962 | status = -EINVAL; | |
3963 | goto out_free; | |
1da177e4 | 3964 | } |
1775fd3e | 3965 | |
aa9c2669 | 3966 | data->arg.label = label; |
57dc9a57 | 3967 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3968 | out_free: |
57dc9a57 TM |
3969 | nfs4_free_createdata(data); |
3970 | out: | |
1da177e4 LT |
3971 | return status; |
3972 | } | |
3973 | ||
3974 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3975 | struct iattr *sattr, dev_t rdev) | |
3976 | { | |
3977 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3978 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3979 | int err; |
a8a5da99 | 3980 | |
aa9c2669 DQ |
3981 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3982 | ||
a8a5da99 | 3983 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3984 | do { |
078ea3df TM |
3985 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
3986 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
3987 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3988 | &exception); |
3989 | } while (exception.retry); | |
aa9c2669 DQ |
3990 | |
3991 | nfs4_label_release_security(label); | |
3992 | ||
1da177e4 LT |
3993 | return err; |
3994 | } | |
3995 | ||
3996 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3997 | struct nfs_fsstat *fsstat) | |
3998 | { | |
3999 | struct nfs4_statfs_arg args = { | |
4000 | .fh = fhandle, | |
4001 | .bitmask = server->attr_bitmask, | |
4002 | }; | |
24ad148a BH |
4003 | struct nfs4_statfs_res res = { |
4004 | .fsstat = fsstat, | |
4005 | }; | |
1da177e4 LT |
4006 | struct rpc_message msg = { |
4007 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4008 | .rpc_argp = &args, | |
24ad148a | 4009 | .rpc_resp = &res, |
1da177e4 LT |
4010 | }; |
4011 | ||
0e574af1 | 4012 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4013 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4014 | } |
4015 | ||
4016 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4017 | { | |
4018 | struct nfs4_exception exception = { }; | |
4019 | int err; | |
4020 | do { | |
4021 | err = nfs4_handle_exception(server, | |
4022 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4023 | &exception); | |
4024 | } while (exception.retry); | |
4025 | return err; | |
4026 | } | |
4027 | ||
4028 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4029 | struct nfs_fsinfo *fsinfo) | |
4030 | { | |
4031 | struct nfs4_fsinfo_arg args = { | |
4032 | .fh = fhandle, | |
4033 | .bitmask = server->attr_bitmask, | |
4034 | }; | |
3dda5e43 BH |
4035 | struct nfs4_fsinfo_res res = { |
4036 | .fsinfo = fsinfo, | |
4037 | }; | |
1da177e4 LT |
4038 | struct rpc_message msg = { |
4039 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4040 | .rpc_argp = &args, | |
3dda5e43 | 4041 | .rpc_resp = &res, |
1da177e4 LT |
4042 | }; |
4043 | ||
7c513058 | 4044 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4045 | } |
4046 | ||
4047 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4048 | { | |
4049 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4050 | unsigned long now = jiffies; |
1da177e4 LT |
4051 | int err; |
4052 | ||
4053 | do { | |
83ca7f5a | 4054 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4055 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4056 | if (err == 0) { |
4057 | struct nfs_client *clp = server->nfs_client; | |
4058 | ||
4059 | spin_lock(&clp->cl_lock); | |
4060 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4061 | clp->cl_last_renewal = now; | |
4062 | spin_unlock(&clp->cl_lock); | |
4063 | break; | |
4064 | } | |
4065 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4066 | } while (exception.retry); |
4067 | return err; | |
4068 | } | |
4069 | ||
4070 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4071 | { | |
e38eb650 BS |
4072 | int error; |
4073 | ||
0e574af1 | 4074 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4075 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4076 | if (error == 0) { |
4077 | /* block layout checks this! */ | |
4078 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4079 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4080 | } |
e38eb650 BS |
4081 | |
4082 | return error; | |
1da177e4 LT |
4083 | } |
4084 | ||
4085 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4086 | struct nfs_pathconf *pathconf) | |
4087 | { | |
4088 | struct nfs4_pathconf_arg args = { | |
4089 | .fh = fhandle, | |
4090 | .bitmask = server->attr_bitmask, | |
4091 | }; | |
d45b2989 BH |
4092 | struct nfs4_pathconf_res res = { |
4093 | .pathconf = pathconf, | |
4094 | }; | |
1da177e4 LT |
4095 | struct rpc_message msg = { |
4096 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4097 | .rpc_argp = &args, | |
d45b2989 | 4098 | .rpc_resp = &res, |
1da177e4 LT |
4099 | }; |
4100 | ||
4101 | /* None of the pathconf attributes are mandatory to implement */ | |
4102 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4103 | memset(pathconf, 0, sizeof(*pathconf)); | |
4104 | return 0; | |
4105 | } | |
4106 | ||
0e574af1 | 4107 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4108 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4109 | } |
4110 | ||
4111 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4112 | struct nfs_pathconf *pathconf) | |
4113 | { | |
4114 | struct nfs4_exception exception = { }; | |
4115 | int err; | |
4116 | ||
4117 | do { | |
4118 | err = nfs4_handle_exception(server, | |
4119 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4120 | &exception); | |
4121 | } while (exception.retry); | |
4122 | return err; | |
4123 | } | |
4124 | ||
5521abfd | 4125 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4126 | const struct nfs_open_context *ctx, |
4127 | const struct nfs_lock_context *l_ctx, | |
4128 | fmode_t fmode) | |
4129 | { | |
4130 | const struct nfs_lockowner *lockowner = NULL; | |
4131 | ||
4132 | if (l_ctx != NULL) | |
4133 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4134 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4135 | } |
4136 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4137 | ||
5521abfd TM |
4138 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4139 | const struct nfs_open_context *ctx, | |
4140 | const struct nfs_lock_context *l_ctx, | |
4141 | fmode_t fmode) | |
4142 | { | |
4143 | nfs4_stateid current_stateid; | |
4144 | ||
e1253be0 TM |
4145 | /* If the current stateid represents a lost lock, then exit */ |
4146 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4147 | return true; | |
5521abfd TM |
4148 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4149 | } | |
4150 | ||
4151 | static bool nfs4_error_stateid_expired(int err) | |
4152 | { | |
4153 | switch (err) { | |
4154 | case -NFS4ERR_DELEG_REVOKED: | |
4155 | case -NFS4ERR_ADMIN_REVOKED: | |
4156 | case -NFS4ERR_BAD_STATEID: | |
4157 | case -NFS4ERR_STALE_STATEID: | |
4158 | case -NFS4ERR_OLD_STATEID: | |
4159 | case -NFS4ERR_OPENMODE: | |
4160 | case -NFS4ERR_EXPIRED: | |
4161 | return true; | |
4162 | } | |
4163 | return false; | |
4164 | } | |
4165 | ||
d45f60c6 | 4166 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4167 | { |
d45f60c6 | 4168 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4169 | } |
4170 | ||
d45f60c6 | 4171 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4172 | { |
d45f60c6 | 4173 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4174 | |
d45f60c6 WAA |
4175 | trace_nfs4_read(hdr, task->tk_status); |
4176 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4177 | hdr->args.context->state, |
4178 | NULL) == -EAGAIN) { | |
d00c5d43 | 4179 | rpc_restart_call_prepare(task); |
ec06c096 | 4180 | return -EAGAIN; |
1da177e4 | 4181 | } |
8850df99 | 4182 | |
d45f60c6 | 4183 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4184 | if (task->tk_status > 0) |
d45f60c6 | 4185 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4186 | return 0; |
1da177e4 LT |
4187 | } |
4188 | ||
5521abfd | 4189 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4190 | struct nfs_pgio_args *args) |
5521abfd TM |
4191 | { |
4192 | ||
4193 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4194 | nfs4_stateid_is_current(&args->stateid, | |
4195 | args->context, | |
4196 | args->lock_context, | |
4197 | FMODE_READ)) | |
4198 | return false; | |
4199 | rpc_restart_call_prepare(task); | |
4200 | return true; | |
4201 | } | |
4202 | ||
d45f60c6 | 4203 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4204 | { |
4205 | ||
4206 | dprintk("--> %s\n", __func__); | |
4207 | ||
d45f60c6 | 4208 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4209 | return -EAGAIN; |
d45f60c6 | 4210 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4211 | return -EAGAIN; |
d45f60c6 WAA |
4212 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4213 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4214 | } |
4215 | ||
d45f60c6 WAA |
4216 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4217 | struct rpc_message *msg) | |
1da177e4 | 4218 | { |
d45f60c6 WAA |
4219 | hdr->timestamp = jiffies; |
4220 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4221 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4222 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4223 | } |
4224 | ||
d45f60c6 WAA |
4225 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4226 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4227 | { |
d45f60c6 WAA |
4228 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4229 | &hdr->args.seq_args, | |
4230 | &hdr->res.seq_res, | |
9b206149 | 4231 | task)) |
ef1820f9 | 4232 | return 0; |
d45f60c6 WAA |
4233 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4234 | hdr->args.lock_context, | |
4235 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4236 | return -EIO; |
d45f60c6 | 4237 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4238 | return -EIO; |
4239 | return 0; | |
1da177e4 LT |
4240 | } |
4241 | ||
d45f60c6 WAA |
4242 | static int nfs4_write_done_cb(struct rpc_task *task, |
4243 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4244 | { |
d45f60c6 | 4245 | struct inode *inode = hdr->inode; |
8478eaa1 | 4246 | |
d45f60c6 WAA |
4247 | trace_nfs4_write(hdr, task->tk_status); |
4248 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4249 | hdr->args.context->state, |
4250 | NULL) == -EAGAIN) { | |
d00c5d43 | 4251 | rpc_restart_call_prepare(task); |
788e7a89 | 4252 | return -EAGAIN; |
1da177e4 | 4253 | } |
4f9838c7 | 4254 | if (task->tk_status >= 0) { |
d45f60c6 | 4255 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4256 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4257 | } |
788e7a89 | 4258 | return 0; |
1da177e4 LT |
4259 | } |
4260 | ||
5521abfd | 4261 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4262 | struct nfs_pgio_args *args) |
5521abfd TM |
4263 | { |
4264 | ||
4265 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4266 | nfs4_stateid_is_current(&args->stateid, | |
4267 | args->context, | |
4268 | args->lock_context, | |
4269 | FMODE_WRITE)) | |
4270 | return false; | |
4271 | rpc_restart_call_prepare(task); | |
4272 | return true; | |
4273 | } | |
4274 | ||
d45f60c6 | 4275 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4276 | { |
d45f60c6 | 4277 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4278 | return -EAGAIN; |
d45f60c6 | 4279 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4280 | return -EAGAIN; |
d45f60c6 WAA |
4281 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4282 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4283 | } |
4284 | ||
5a37f851 | 4285 | static |
d45f60c6 | 4286 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4287 | { |
5a37f851 | 4288 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4289 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4290 | return false; |
4291 | /* Otherwise, request attributes if and only if we don't hold | |
4292 | * a delegation | |
4293 | */ | |
011e2a7f | 4294 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4295 | } |
a69aef14 | 4296 | |
d45f60c6 WAA |
4297 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4298 | struct rpc_message *msg) | |
1da177e4 | 4299 | { |
d45f60c6 | 4300 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4301 | |
d45f60c6 WAA |
4302 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4303 | hdr->args.bitmask = NULL; | |
4304 | hdr->res.fattr = NULL; | |
7ffd1064 | 4305 | } else |
d45f60c6 | 4306 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4307 | |
d45f60c6 WAA |
4308 | if (!hdr->pgio_done_cb) |
4309 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4310 | hdr->res.server = server; | |
4311 | hdr->timestamp = jiffies; | |
1da177e4 | 4312 | |
bdc7f021 | 4313 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4314 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4315 | } |
4316 | ||
0b7c0153 | 4317 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4318 | { |
d9afbd1b TM |
4319 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4320 | &data->args.seq_args, | |
4321 | &data->res.seq_res, | |
4322 | task); | |
1da177e4 LT |
4323 | } |
4324 | ||
0b7c0153 | 4325 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4326 | { |
1da177e4 | 4327 | struct inode *inode = data->inode; |
14516c3a | 4328 | |
cc668ab3 | 4329 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4330 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4331 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4332 | rpc_restart_call_prepare(task); |
788e7a89 | 4333 | return -EAGAIN; |
1da177e4 | 4334 | } |
788e7a89 | 4335 | return 0; |
1da177e4 LT |
4336 | } |
4337 | ||
0b7c0153 | 4338 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4339 | { |
4340 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4341 | return -EAGAIN; | |
0b7c0153 | 4342 | return data->commit_done_cb(task, data); |
5f452431 FI |
4343 | } |
4344 | ||
0b7c0153 | 4345 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4346 | { |
788e7a89 | 4347 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4348 | |
0b7c0153 FI |
4349 | if (data->commit_done_cb == NULL) |
4350 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4351 | data->res.server = server; |
bdc7f021 | 4352 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4353 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4354 | } |
4355 | ||
9bc4e3ca CL |
4356 | struct nfs4_renewdata { |
4357 | struct nfs_client *client; | |
4358 | unsigned long timestamp; | |
4359 | }; | |
4360 | ||
1da177e4 LT |
4361 | /* |
4362 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4363 | * standalone procedure for queueing an asynchronous RENEW. | |
4364 | */ | |
9bc4e3ca | 4365 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4366 | { |
9bc4e3ca CL |
4367 | struct nfs4_renewdata *data = calldata; |
4368 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4369 | |
0851de06 AB |
4370 | if (atomic_read(&clp->cl_count) > 1) |
4371 | nfs4_schedule_state_renewal(clp); | |
4372 | nfs_put_client(clp); | |
9bc4e3ca | 4373 | kfree(data); |
dc96aef9 AB |
4374 | } |
4375 | ||
9bc4e3ca | 4376 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4377 | { |
9bc4e3ca CL |
4378 | struct nfs4_renewdata *data = calldata; |
4379 | struct nfs_client *clp = data->client; | |
4380 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4381 | |
c6d01c6f | 4382 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4383 | switch (task->tk_status) { |
4384 | case 0: | |
4385 | break; | |
4386 | case -NFS4ERR_LEASE_MOVED: | |
4387 | nfs4_schedule_lease_moved_recovery(clp); | |
4388 | break; | |
4389 | default: | |
95baa25c | 4390 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4391 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4392 | return; | |
4393 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4394 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4395 | return; |
4396 | } | |
4397 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4398 | } |
452e9352 | 4399 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4400 | } |
4401 | ||
963d8fe5 TM |
4402 | static const struct rpc_call_ops nfs4_renew_ops = { |
4403 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4404 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4405 | }; |
4406 | ||
2f60ea6b | 4407 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4408 | { |
4409 | struct rpc_message msg = { | |
4410 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4411 | .rpc_argp = clp, | |
b4454fe1 | 4412 | .rpc_cred = cred, |
1da177e4 | 4413 | }; |
9bc4e3ca | 4414 | struct nfs4_renewdata *data; |
1da177e4 | 4415 | |
2f60ea6b TM |
4416 | if (renew_flags == 0) |
4417 | return 0; | |
0851de06 AB |
4418 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4419 | return -EIO; | |
b569ad34 | 4420 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4421 | if (data == NULL) |
4422 | return -ENOMEM; | |
4423 | data->client = clp; | |
4424 | data->timestamp = jiffies; | |
bc7a05ca | 4425 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4426 | &nfs4_renew_ops, data); |
1da177e4 LT |
4427 | } |
4428 | ||
8534d4ec | 4429 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4430 | { |
4431 | struct rpc_message msg = { | |
4432 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4433 | .rpc_argp = clp, | |
b4454fe1 | 4434 | .rpc_cred = cred, |
1da177e4 LT |
4435 | }; |
4436 | unsigned long now = jiffies; | |
4437 | int status; | |
4438 | ||
bc7a05ca | 4439 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4440 | if (status < 0) |
4441 | return status; | |
452e9352 | 4442 | do_renew_lease(clp, now); |
1da177e4 LT |
4443 | return 0; |
4444 | } | |
4445 | ||
aa1870af BF |
4446 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4447 | { | |
7dd7d959 | 4448 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4449 | } |
4450 | ||
21f498c2 TM |
4451 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4452 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4453 | * the stack. |
4454 | */ | |
21f498c2 | 4455 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4456 | |
e9e3d724 NH |
4457 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4458 | struct page **pages, unsigned int *pgbase) | |
4459 | { | |
4460 | struct page *newpage, **spages; | |
4461 | int rc = 0; | |
4462 | size_t len; | |
4463 | spages = pages; | |
4464 | ||
4465 | do { | |
21f498c2 | 4466 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4467 | newpage = alloc_page(GFP_KERNEL); |
4468 | ||
4469 | if (newpage == NULL) | |
4470 | goto unwind; | |
4471 | memcpy(page_address(newpage), buf, len); | |
4472 | buf += len; | |
4473 | buflen -= len; | |
4474 | *pages++ = newpage; | |
4475 | rc++; | |
4476 | } while (buflen != 0); | |
4477 | ||
4478 | return rc; | |
4479 | ||
4480 | unwind: | |
4481 | for(; rc > 0; rc--) | |
4482 | __free_page(spages[rc-1]); | |
4483 | return -ENOMEM; | |
4484 | } | |
4485 | ||
e50a1c2e BF |
4486 | struct nfs4_cached_acl { |
4487 | int cached; | |
4488 | size_t len; | |
3e9d4154 | 4489 | char data[0]; |
e50a1c2e BF |
4490 | }; |
4491 | ||
4492 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4493 | { | |
4494 | struct nfs_inode *nfsi = NFS_I(inode); | |
4495 | ||
4496 | spin_lock(&inode->i_lock); | |
4497 | kfree(nfsi->nfs4_acl); | |
4498 | nfsi->nfs4_acl = acl; | |
4499 | spin_unlock(&inode->i_lock); | |
4500 | } | |
4501 | ||
4502 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4503 | { | |
4504 | nfs4_set_cached_acl(inode, NULL); | |
4505 | } | |
4506 | ||
4507 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4508 | { | |
4509 | struct nfs_inode *nfsi = NFS_I(inode); | |
4510 | struct nfs4_cached_acl *acl; | |
4511 | int ret = -ENOENT; | |
4512 | ||
4513 | spin_lock(&inode->i_lock); | |
4514 | acl = nfsi->nfs4_acl; | |
4515 | if (acl == NULL) | |
4516 | goto out; | |
4517 | if (buf == NULL) /* user is just asking for length */ | |
4518 | goto out_len; | |
4519 | if (acl->cached == 0) | |
4520 | goto out; | |
4521 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4522 | if (acl->len > buflen) | |
4523 | goto out; | |
4524 | memcpy(buf, acl->data, acl->len); | |
4525 | out_len: | |
4526 | ret = acl->len; | |
4527 | out: | |
4528 | spin_unlock(&inode->i_lock); | |
4529 | return ret; | |
4530 | } | |
4531 | ||
5794d21e | 4532 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4533 | { |
4534 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4535 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4536 | |
1f1ea6c2 | 4537 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4538 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4539 | if (acl == NULL) |
4540 | goto out; | |
4541 | acl->cached = 1; | |
5794d21e | 4542 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4543 | } else { |
4544 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4545 | if (acl == NULL) | |
4546 | goto out; | |
4547 | acl->cached = 0; | |
4548 | } | |
4549 | acl->len = acl_len; | |
4550 | out: | |
4551 | nfs4_set_cached_acl(inode, acl); | |
4552 | } | |
4553 | ||
bf118a34 AA |
4554 | /* |
4555 | * The getxattr API returns the required buffer length when called with a | |
4556 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4557 | * the required buf. On a NULL buf, we send a page of data to the server | |
4558 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4559 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4560 | * the cache. If not so, we throw away the page, and cache the required | |
4561 | * length. The next getxattr call will then produce another round trip to | |
4562 | * the server, this time with the input buf of the required size. | |
4563 | */ | |
16b4289c | 4564 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4565 | { |
bf118a34 | 4566 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4567 | struct nfs_getaclargs args = { |
4568 | .fh = NFS_FH(inode), | |
4569 | .acl_pages = pages, | |
4570 | .acl_len = buflen, | |
4571 | }; | |
663c79b3 BH |
4572 | struct nfs_getaclres res = { |
4573 | .acl_len = buflen, | |
4574 | }; | |
aa1870af BF |
4575 | struct rpc_message msg = { |
4576 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4577 | .rpc_argp = &args, | |
663c79b3 | 4578 | .rpc_resp = &res, |
aa1870af | 4579 | }; |
21f498c2 TM |
4580 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4581 | int ret = -ENOMEM, i; | |
aa1870af | 4582 | |
bf118a34 AA |
4583 | /* As long as we're doing a round trip to the server anyway, |
4584 | * let's be prepared for a page of acl data. */ | |
4585 | if (npages == 0) | |
4586 | npages = 1; | |
21f498c2 TM |
4587 | if (npages > ARRAY_SIZE(pages)) |
4588 | return -ERANGE; | |
5a006899 | 4589 | |
bf118a34 AA |
4590 | for (i = 0; i < npages; i++) { |
4591 | pages[i] = alloc_page(GFP_KERNEL); | |
4592 | if (!pages[i]) | |
4593 | goto out_free; | |
e50a1c2e | 4594 | } |
5a006899 SP |
4595 | |
4596 | /* for decoding across pages */ | |
4597 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4598 | if (!res.acl_scratch) | |
4599 | goto out_free; | |
4600 | ||
bf118a34 AA |
4601 | args.acl_len = npages * PAGE_SIZE; |
4602 | args.acl_pgbase = 0; | |
5a006899 | 4603 | |
de040bec | 4604 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4605 | __func__, buf, buflen, npages, args.acl_len); |
4606 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4607 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4608 | if (ret) |
4609 | goto out_free; | |
bf118a34 | 4610 | |
1f1ea6c2 TM |
4611 | /* Handle the case where the passed-in buffer is too short */ |
4612 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4613 | /* Did the user only issue a request for the acl length? */ | |
4614 | if (buf == NULL) | |
4615 | goto out_ok; | |
e50a1c2e | 4616 | ret = -ERANGE; |
1f1ea6c2 | 4617 | goto out_free; |
e50a1c2e | 4618 | } |
1f1ea6c2 | 4619 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4620 | if (buf) { |
4621 | if (res.acl_len > buflen) { | |
4622 | ret = -ERANGE; | |
4623 | goto out_free; | |
4624 | } | |
1f1ea6c2 | 4625 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4626 | } |
1f1ea6c2 TM |
4627 | out_ok: |
4628 | ret = res.acl_len; | |
e50a1c2e | 4629 | out_free: |
bf118a34 AA |
4630 | for (i = 0; i < npages; i++) |
4631 | if (pages[i]) | |
4632 | __free_page(pages[i]); | |
331818f1 TM |
4633 | if (res.acl_scratch) |
4634 | __free_page(res.acl_scratch); | |
aa1870af BF |
4635 | return ret; |
4636 | } | |
4637 | ||
16b4289c TM |
4638 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4639 | { | |
4640 | struct nfs4_exception exception = { }; | |
4641 | ssize_t ret; | |
4642 | do { | |
4643 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4644 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4645 | if (ret >= 0) |
4646 | break; | |
4647 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4648 | } while (exception.retry); | |
4649 | return ret; | |
4650 | } | |
4651 | ||
e50a1c2e BF |
4652 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4653 | { | |
4654 | struct nfs_server *server = NFS_SERVER(inode); | |
4655 | int ret; | |
4656 | ||
4657 | if (!nfs4_server_supports_acls(server)) | |
4658 | return -EOPNOTSUPP; | |
4659 | ret = nfs_revalidate_inode(server, inode); | |
4660 | if (ret < 0) | |
4661 | return ret; | |
08a22b39 AK |
4662 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4663 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4664 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4665 | if (ret != -ENOENT) | |
bf118a34 AA |
4666 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4667 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4668 | return ret; |
4669 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4670 | } | |
4671 | ||
16b4289c | 4672 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4673 | { |
4674 | struct nfs_server *server = NFS_SERVER(inode); | |
4675 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4676 | struct nfs_setaclargs arg = { | |
4677 | .fh = NFS_FH(inode), | |
4678 | .acl_pages = pages, | |
4679 | .acl_len = buflen, | |
4680 | }; | |
73c403a9 | 4681 | struct nfs_setaclres res; |
4b580ee3 BF |
4682 | struct rpc_message msg = { |
4683 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4684 | .rpc_argp = &arg, | |
73c403a9 | 4685 | .rpc_resp = &res, |
4b580ee3 | 4686 | }; |
21f498c2 | 4687 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4688 | int ret, i; |
4b580ee3 BF |
4689 | |
4690 | if (!nfs4_server_supports_acls(server)) | |
4691 | return -EOPNOTSUPP; | |
21f498c2 TM |
4692 | if (npages > ARRAY_SIZE(pages)) |
4693 | return -ERANGE; | |
e9e3d724 NH |
4694 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4695 | if (i < 0) | |
4696 | return i; | |
57ec14c5 | 4697 | nfs4_inode_return_delegation(inode); |
7c513058 | 4698 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4699 | |
4700 | /* | |
4701 | * Free each page after tx, so the only ref left is | |
4702 | * held by the network stack | |
4703 | */ | |
4704 | for (; i > 0; i--) | |
4705 | put_page(pages[i-1]); | |
4706 | ||
08a22b39 AK |
4707 | /* |
4708 | * Acl update can result in inode attribute update. | |
4709 | * so mark the attribute cache invalid. | |
4710 | */ | |
4711 | spin_lock(&inode->i_lock); | |
4712 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4713 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4714 | nfs_access_zap_cache(inode); |
4715 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4716 | return ret; |
4717 | } | |
4718 | ||
16b4289c TM |
4719 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4720 | { | |
4721 | struct nfs4_exception exception = { }; | |
4722 | int err; | |
4723 | do { | |
c1578b76 TM |
4724 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4725 | trace_nfs4_set_acl(inode, err); | |
4726 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4727 | &exception); |
4728 | } while (exception.retry); | |
4729 | return err; | |
4730 | } | |
4731 | ||
aa9c2669 DQ |
4732 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4733 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4734 | size_t buflen) | |
4735 | { | |
4736 | struct nfs_server *server = NFS_SERVER(inode); | |
4737 | struct nfs_fattr fattr; | |
4738 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4739 | ||
4740 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4741 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4742 | .fh = NFS_FH(inode), |
4743 | .bitmask = bitmask, | |
4744 | }; | |
4745 | struct nfs4_getattr_res res = { | |
4746 | .fattr = &fattr, | |
4747 | .label = &label, | |
4748 | .server = server, | |
4749 | }; | |
4750 | struct rpc_message msg = { | |
4751 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4752 | .rpc_argp = &arg, |
aa9c2669 DQ |
4753 | .rpc_resp = &res, |
4754 | }; | |
4755 | int ret; | |
4756 | ||
4757 | nfs_fattr_init(&fattr); | |
4758 | ||
fcb63a9b | 4759 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4760 | if (ret) |
4761 | return ret; | |
4762 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4763 | return -ENOENT; | |
4764 | if (buflen < label.len) | |
4765 | return -ERANGE; | |
4766 | return 0; | |
4767 | } | |
4768 | ||
4769 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4770 | size_t buflen) | |
4771 | { | |
4772 | struct nfs4_exception exception = { }; | |
4773 | int err; | |
4774 | ||
4775 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4776 | return -EOPNOTSUPP; | |
4777 | ||
4778 | do { | |
c1578b76 TM |
4779 | err = _nfs4_get_security_label(inode, buf, buflen); |
4780 | trace_nfs4_get_security_label(inode, err); | |
4781 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4782 | &exception); |
4783 | } while (exception.retry); | |
4784 | return err; | |
4785 | } | |
4786 | ||
4787 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4788 | struct nfs4_label *ilabel, | |
4789 | struct nfs_fattr *fattr, | |
4790 | struct nfs4_label *olabel) | |
4791 | { | |
4792 | ||
4793 | struct iattr sattr = {0}; | |
4794 | struct nfs_server *server = NFS_SERVER(inode); | |
4795 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4796 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4797 | .fh = NFS_FH(inode), |
4798 | .iap = &sattr, | |
4799 | .server = server, | |
4800 | .bitmask = bitmask, | |
4801 | .label = ilabel, | |
4802 | }; | |
4803 | struct nfs_setattrres res = { | |
4804 | .fattr = fattr, | |
4805 | .label = olabel, | |
4806 | .server = server, | |
4807 | }; | |
4808 | struct rpc_message msg = { | |
4809 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4810 | .rpc_argp = &arg, |
aa9c2669 DQ |
4811 | .rpc_resp = &res, |
4812 | }; | |
4813 | int status; | |
4814 | ||
12207f69 | 4815 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4816 | |
12207f69 | 4817 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4818 | if (status) |
4819 | dprintk("%s failed: %d\n", __func__, status); | |
4820 | ||
4821 | return status; | |
4822 | } | |
4823 | ||
4824 | static int nfs4_do_set_security_label(struct inode *inode, | |
4825 | struct nfs4_label *ilabel, | |
4826 | struct nfs_fattr *fattr, | |
4827 | struct nfs4_label *olabel) | |
4828 | { | |
4829 | struct nfs4_exception exception = { }; | |
4830 | int err; | |
4831 | ||
4832 | do { | |
c1578b76 TM |
4833 | err = _nfs4_do_set_security_label(inode, ilabel, |
4834 | fattr, olabel); | |
4835 | trace_nfs4_set_security_label(inode, err); | |
4836 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4837 | &exception); |
4838 | } while (exception.retry); | |
4839 | return err; | |
4840 | } | |
4841 | ||
4842 | static int | |
4843 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4844 | { | |
4845 | struct nfs4_label ilabel, *olabel = NULL; | |
4846 | struct nfs_fattr fattr; | |
4847 | struct rpc_cred *cred; | |
2b0143b5 | 4848 | struct inode *inode = d_inode(dentry); |
aa9c2669 DQ |
4849 | int status; |
4850 | ||
4851 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4852 | return -EOPNOTSUPP; | |
4853 | ||
4854 | nfs_fattr_init(&fattr); | |
4855 | ||
4856 | ilabel.pi = 0; | |
4857 | ilabel.lfs = 0; | |
4858 | ilabel.label = (char *)buf; | |
4859 | ilabel.len = buflen; | |
4860 | ||
4861 | cred = rpc_lookup_cred(); | |
4862 | if (IS_ERR(cred)) | |
4863 | return PTR_ERR(cred); | |
4864 | ||
4865 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4866 | if (IS_ERR(olabel)) { | |
4867 | status = -PTR_ERR(olabel); | |
4868 | goto out; | |
4869 | } | |
4870 | ||
4871 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4872 | if (status == 0) | |
4873 | nfs_setsecurity(inode, &fattr, olabel); | |
4874 | ||
4875 | nfs4_label_free(olabel); | |
4876 | out: | |
4877 | put_rpccred(cred); | |
4878 | return status; | |
4879 | } | |
4880 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4881 | ||
4882 | ||
1da177e4 | 4883 | static int |
8478eaa1 N |
4884 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, |
4885 | struct nfs4_state *state, long *timeout) | |
1da177e4 | 4886 | { |
aa5190d0 TM |
4887 | struct nfs_client *clp = server->nfs_client; |
4888 | ||
4889 | if (task->tk_status >= 0) | |
1da177e4 LT |
4890 | return 0; |
4891 | switch(task->tk_status) { | |
a1d0b5ee | 4892 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4893 | case -NFS4ERR_ADMIN_REVOKED: |
4894 | case -NFS4ERR_BAD_STATEID: | |
4895 | case -NFS4ERR_OPENMODE: | |
4896 | if (state == NULL) | |
4897 | break; | |
5d422301 | 4898 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4899 | goto recovery_failed; |
0400a6b0 | 4900 | goto wait_on_recovery; |
0ced63d1 | 4901 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4902 | if (state != NULL) { |
4903 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 4904 | goto recovery_failed; |
5d422301 | 4905 | } |
1da177e4 | 4906 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4907 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4908 | nfs4_schedule_lease_recovery(clp); |
4909 | goto wait_on_recovery; | |
519ae255 CL |
4910 | case -NFS4ERR_MOVED: |
4911 | if (nfs4_schedule_migration_recovery(server) < 0) | |
4912 | goto recovery_failed; | |
4913 | goto wait_on_recovery; | |
8ef2f8d4 CL |
4914 | case -NFS4ERR_LEASE_MOVED: |
4915 | nfs4_schedule_lease_moved_recovery(clp); | |
4916 | goto wait_on_recovery; | |
4745e315 AA |
4917 | #if defined(CONFIG_NFS_V4_1) |
4918 | case -NFS4ERR_BADSESSION: | |
4919 | case -NFS4ERR_BADSLOT: | |
4920 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4921 | case -NFS4ERR_DEADSESSION: | |
4922 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4923 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4924 | case -NFS4ERR_SEQ_MISORDERED: | |
4925 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4926 | task->tk_status); | |
9f594791 | 4927 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 4928 | goto wait_on_recovery; |
4745e315 | 4929 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4930 | case -NFS4ERR_DELAY: |
aa5190d0 | 4931 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
8478eaa1 N |
4932 | rpc_delay(task, nfs4_update_delay(timeout)); |
4933 | goto restart_call; | |
006ea73e | 4934 | case -NFS4ERR_GRACE: |
1da177e4 | 4935 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 4936 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 4937 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 4938 | goto restart_call; |
1da177e4 LT |
4939 | } |
4940 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4941 | return 0; | |
9f51a78e | 4942 | recovery_failed: |
5d422301 TM |
4943 | task->tk_status = -EIO; |
4944 | return 0; | |
0400a6b0 | 4945 | wait_on_recovery: |
a2c0b9e2 | 4946 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4947 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4948 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
4949 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
4950 | goto recovery_failed; | |
f1478c13 | 4951 | restart_call: |
a2c0b9e2 TM |
4952 | task->tk_status = 0; |
4953 | return -EAGAIN; | |
1da177e4 LT |
4954 | } |
4955 | ||
f092075d CL |
4956 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4957 | nfs4_verifier *bootverf) | |
cd93710e CL |
4958 | { |
4959 | __be32 verf[2]; | |
4960 | ||
2c820d9a CL |
4961 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4962 | /* An impossible timestamp guarantees this value | |
4963 | * will never match a generated boot time. */ | |
4964 | verf[0] = 0; | |
17f26b12 | 4965 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 4966 | } else { |
f092075d | 4967 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
4968 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
4969 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 4970 | } |
cd93710e CL |
4971 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4972 | } | |
4973 | ||
a3192688 JL |
4974 | static int |
4975 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 4976 | { |
a3192688 JL |
4977 | int result; |
4978 | size_t len; | |
4979 | char *str; | |
4980 | bool retried = false; | |
e984a55a | 4981 | |
ceb3a16c | 4982 | if (clp->cl_owner_id != NULL) |
a3192688 JL |
4983 | return 0; |
4984 | retry: | |
4985 | rcu_read_lock(); | |
4986 | len = 10 + strlen(clp->cl_ipaddr) + 1 + | |
4987 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + | |
4988 | 1 + | |
4989 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
4990 | 1; | |
4991 | rcu_read_unlock(); | |
4992 | ||
4993 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
4994 | return -EINVAL; | |
4995 | ||
4996 | /* | |
4997 | * Since this string is allocated at mount time, and held until the | |
4998 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
4999 | * about a memory-reclaim deadlock. | |
5000 | */ | |
5001 | str = kmalloc(len, GFP_KERNEL); | |
5002 | if (!str) | |
5003 | return -ENOMEM; | |
ceb3a16c | 5004 | |
e984a55a | 5005 | rcu_read_lock(); |
a3192688 JL |
5006 | result = scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
5007 | clp->cl_ipaddr, | |
5008 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5009 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5010 | rcu_read_unlock(); |
a3192688 JL |
5011 | |
5012 | /* Did something change? */ | |
5013 | if (result >= len) { | |
5014 | kfree(str); | |
5015 | if (retried) | |
5016 | return -EINVAL; | |
5017 | retried = true; | |
5018 | goto retry; | |
5019 | } | |
5020 | clp->cl_owner_id = str; | |
5021 | return 0; | |
e984a55a CL |
5022 | } |
5023 | ||
873e3851 JL |
5024 | static int |
5025 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5026 | { | |
5027 | int result; | |
5028 | size_t len; | |
5029 | char *str; | |
5030 | ||
5031 | len = 10 + 10 + 1 + 10 + 1 + | |
5032 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5033 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5034 | ||
5035 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5036 | return -EINVAL; | |
5037 | ||
5038 | /* | |
5039 | * Since this string is allocated at mount time, and held until the | |
5040 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5041 | * about a memory-reclaim deadlock. | |
5042 | */ | |
5043 | str = kmalloc(len, GFP_KERNEL); | |
5044 | if (!str) | |
5045 | return -ENOMEM; | |
5046 | ||
5047 | result = scnprintf(str, len, "Linux NFSv%u.%u %s/%s", | |
5048 | clp->rpc_ops->version, clp->cl_minorversion, | |
5049 | nfs4_client_id_uniquifier, | |
5050 | clp->cl_rpcclient->cl_nodename); | |
5051 | if (result >= len) { | |
5052 | kfree(str); | |
5053 | return -EINVAL; | |
5054 | } | |
5055 | clp->cl_owner_id = str; | |
5056 | return 0; | |
5057 | } | |
5058 | ||
5059 | static int | |
5060 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5061 | { |
873e3851 JL |
5062 | int result; |
5063 | size_t len; | |
5064 | char *str; | |
ceb3a16c TM |
5065 | |
5066 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5067 | return 0; |
6f2ea7f2 CL |
5068 | |
5069 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5070 | return nfs4_init_uniquifier_client_string(clp); |
5071 | ||
5072 | len = 10 + 10 + 1 + 10 + 1 + | |
5073 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5074 | ||
5075 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5076 | return -EINVAL; | |
5077 | ||
5078 | /* | |
5079 | * Since this string is allocated at mount time, and held until the | |
5080 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5081 | * about a memory-reclaim deadlock. | |
5082 | */ | |
5083 | str = kmalloc(len, GFP_KERNEL); | |
5084 | if (!str) | |
5085 | return -ENOMEM; | |
5086 | ||
5087 | result = scnprintf(str, len, "Linux NFSv%u.%u %s", | |
5088 | clp->rpc_ops->version, clp->cl_minorversion, | |
5089 | clp->cl_rpcclient->cl_nodename); | |
5090 | if (result >= len) { | |
5091 | kfree(str); | |
5092 | return -EINVAL; | |
5093 | } | |
5094 | clp->cl_owner_id = str; | |
5095 | return 0; | |
e984a55a CL |
5096 | } |
5097 | ||
706cb8db CL |
5098 | /* |
5099 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5100 | * services. Advertise one based on the address family of the | |
5101 | * clientaddr. | |
5102 | */ | |
5103 | static unsigned int | |
5104 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5105 | { | |
5106 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5107 | return scnprintf(buf, len, "tcp6"); | |
5108 | else | |
5109 | return scnprintf(buf, len, "tcp"); | |
5110 | } | |
5111 | ||
f11b2a1c JL |
5112 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5113 | { | |
5114 | struct nfs4_setclientid *sc = calldata; | |
5115 | ||
5116 | if (task->tk_status == 0) | |
5117 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5118 | } | |
5119 | ||
5120 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5121 | .rpc_call_done = nfs4_setclientid_done, | |
5122 | }; | |
5123 | ||
6bbb4ae8 CL |
5124 | /** |
5125 | * nfs4_proc_setclientid - Negotiate client ID | |
5126 | * @clp: state data structure | |
5127 | * @program: RPC program for NFSv4 callback service | |
5128 | * @port: IP port number for NFS4 callback service | |
5129 | * @cred: RPC credential to use for this call | |
5130 | * @res: where to place the result | |
5131 | * | |
5132 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5133 | */ | |
bb8b27e5 TM |
5134 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5135 | unsigned short port, struct rpc_cred *cred, | |
5136 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5137 | { |
5138 | nfs4_verifier sc_verifier; | |
5139 | struct nfs4_setclientid setclientid = { | |
5140 | .sc_verifier = &sc_verifier, | |
5141 | .sc_prog = program, | |
3a6bb738 | 5142 | .sc_clnt = clp, |
1da177e4 LT |
5143 | }; |
5144 | struct rpc_message msg = { | |
5145 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5146 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5147 | .rpc_resp = res, |
286d7d6a | 5148 | .rpc_cred = cred, |
1da177e4 | 5149 | }; |
f11b2a1c JL |
5150 | struct rpc_task *task; |
5151 | struct rpc_task_setup task_setup_data = { | |
5152 | .rpc_client = clp->cl_rpcclient, | |
5153 | .rpc_message = &msg, | |
5154 | .callback_ops = &nfs4_setclientid_ops, | |
5155 | .callback_data = &setclientid, | |
5156 | .flags = RPC_TASK_TIMEOUT, | |
5157 | }; | |
6bbb4ae8 | 5158 | int status; |
1da177e4 | 5159 | |
de734831 | 5160 | /* nfs_client_id4 */ |
f092075d | 5161 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5162 | |
5163 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5164 | status = nfs4_init_uniform_client_string(clp); | |
5165 | else | |
a3192688 | 5166 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5167 | |
5168 | if (status) | |
5169 | goto out; | |
3a6bb738 | 5170 | |
de734831 | 5171 | /* cb_client4 */ |
706cb8db CL |
5172 | setclientid.sc_netid_len = |
5173 | nfs4_init_callback_netid(clp, | |
5174 | setclientid.sc_netid, | |
5175 | sizeof(setclientid.sc_netid)); | |
de734831 | 5176 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5177 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5178 | clp->cl_ipaddr, port >> 8, port & 255); |
5179 | ||
3a6bb738 | 5180 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5181 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5182 | clp->cl_owner_id); |
f11b2a1c JL |
5183 | task = rpc_run_task(&task_setup_data); |
5184 | if (IS_ERR(task)) { | |
5185 | status = PTR_ERR(task); | |
5186 | goto out; | |
5187 | } | |
5188 | status = task->tk_status; | |
5189 | if (setclientid.sc_cred) { | |
5190 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5191 | put_rpccred(setclientid.sc_cred); | |
5192 | } | |
5193 | rpc_put_task(task); | |
5194 | out: | |
c6d01c6f | 5195 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5196 | dprintk("NFS reply setclientid: %d\n", status); |
5197 | return status; | |
1da177e4 LT |
5198 | } |
5199 | ||
6bbb4ae8 CL |
5200 | /** |
5201 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5202 | * @clp: state data structure | |
5203 | * @res: result of a previous SETCLIENTID | |
5204 | * @cred: RPC credential to use for this call | |
5205 | * | |
5206 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5207 | */ | |
fd954ae1 | 5208 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5209 | struct nfs4_setclientid_res *arg, |
5210 | struct rpc_cred *cred) | |
1da177e4 | 5211 | { |
1da177e4 LT |
5212 | struct rpc_message msg = { |
5213 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5214 | .rpc_argp = arg, |
286d7d6a | 5215 | .rpc_cred = cred, |
1da177e4 | 5216 | }; |
1da177e4 LT |
5217 | int status; |
5218 | ||
6bbb4ae8 CL |
5219 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5220 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5221 | clp->cl_clientid); | |
1bd714f2 | 5222 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5223 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5224 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5225 | return status; |
5226 | } | |
5227 | ||
fe650407 TM |
5228 | struct nfs4_delegreturndata { |
5229 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5230 | struct nfs4_delegreturnres res; |
fe650407 TM |
5231 | struct nfs_fh fh; |
5232 | nfs4_stateid stateid; | |
26e976a8 | 5233 | unsigned long timestamp; |
fa178f29 | 5234 | struct nfs_fattr fattr; |
fe650407 | 5235 | int rpc_status; |
039b756a PT |
5236 | struct inode *inode; |
5237 | bool roc; | |
5238 | u32 roc_barrier; | |
fe650407 TM |
5239 | }; |
5240 | ||
fe650407 TM |
5241 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5242 | { | |
5243 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5244 | |
14516c3a TM |
5245 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5246 | return; | |
938e1010 | 5247 | |
ca8acf8d | 5248 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5249 | switch (task->tk_status) { |
79708861 | 5250 | case 0: |
fa178f29 | 5251 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5252 | case -NFS4ERR_ADMIN_REVOKED: |
5253 | case -NFS4ERR_DELEG_REVOKED: | |
5254 | case -NFS4ERR_BAD_STATEID: | |
5255 | case -NFS4ERR_OLD_STATEID: | |
5256 | case -NFS4ERR_STALE_STATEID: | |
5257 | case -NFS4ERR_EXPIRED: | |
5258 | task->tk_status = 0; | |
039b756a PT |
5259 | if (data->roc) |
5260 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5261 | break; |
79708861 | 5262 | default: |
8478eaa1 N |
5263 | if (nfs4_async_handle_error(task, data->res.server, |
5264 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5265 | rpc_restart_call_prepare(task); |
79708861 RL |
5266 | return; |
5267 | } | |
5268 | } | |
5269 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5270 | } |
5271 | ||
5272 | static void nfs4_delegreturn_release(void *calldata) | |
5273 | { | |
039b756a | 5274 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5275 | struct inode *inode = data->inode; |
039b756a | 5276 | |
ea7c38fe TM |
5277 | if (inode) { |
5278 | if (data->roc) | |
5279 | pnfs_roc_release(inode); | |
5280 | nfs_iput_and_deactive(inode); | |
5281 | } | |
fe650407 TM |
5282 | kfree(calldata); |
5283 | } | |
5284 | ||
938e1010 AA |
5285 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5286 | { | |
5287 | struct nfs4_delegreturndata *d_data; | |
5288 | ||
5289 | d_data = (struct nfs4_delegreturndata *)data; | |
5290 | ||
4ff376fe TM |
5291 | if (d_data->roc) |
5292 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5293 | |
d9afbd1b TM |
5294 | nfs4_setup_sequence(d_data->res.server, |
5295 | &d_data->args.seq_args, | |
5296 | &d_data->res.seq_res, | |
5297 | task); | |
938e1010 | 5298 | } |
938e1010 | 5299 | |
c8d149f3 | 5300 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5301 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5302 | .rpc_call_done = nfs4_delegreturn_done, |
5303 | .rpc_release = nfs4_delegreturn_release, | |
5304 | }; | |
5305 | ||
e6f81075 | 5306 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5307 | { |
5308 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5309 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5310 | struct rpc_task *task; |
5138fde0 TM |
5311 | struct rpc_message msg = { |
5312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5313 | .rpc_cred = cred, | |
5314 | }; | |
c970aa85 TM |
5315 | struct rpc_task_setup task_setup_data = { |
5316 | .rpc_client = server->client, | |
5138fde0 | 5317 | .rpc_message = &msg, |
c970aa85 TM |
5318 | .callback_ops = &nfs4_delegreturn_ops, |
5319 | .flags = RPC_TASK_ASYNC, | |
5320 | }; | |
e6f81075 | 5321 | int status = 0; |
fe650407 | 5322 | |
8535b2be | 5323 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5324 | if (data == NULL) |
5325 | return -ENOMEM; | |
a9c92d6b | 5326 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5327 | data->args.fhandle = &data->fh; |
5328 | data->args.stateid = &data->stateid; | |
9e907fec | 5329 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5330 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5331 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5332 | data->res.fattr = &data->fattr; |
5333 | data->res.server = server; | |
5138fde0 | 5334 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5335 | data->timestamp = jiffies; |
fe650407 | 5336 | data->rpc_status = 0; |
ea7c38fe TM |
5337 | data->inode = nfs_igrab_and_active(inode); |
5338 | if (data->inode) | |
5339 | data->roc = nfs4_roc(inode); | |
fe650407 | 5340 | |
c970aa85 | 5341 | task_setup_data.callback_data = data; |
1174dd1f TM |
5342 | msg.rpc_argp = &data->args; |
5343 | msg.rpc_resp = &data->res; | |
c970aa85 | 5344 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5345 | if (IS_ERR(task)) |
fe650407 | 5346 | return PTR_ERR(task); |
e6f81075 TM |
5347 | if (!issync) |
5348 | goto out; | |
fe650407 | 5349 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5350 | if (status != 0) |
5351 | goto out; | |
5352 | status = data->rpc_status; | |
e144cbcc TM |
5353 | if (status == 0) |
5354 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5355 | else | |
5356 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5357 | out: |
e6b3c4db | 5358 | rpc_put_task(task); |
fe650407 | 5359 | return status; |
1da177e4 LT |
5360 | } |
5361 | ||
e6f81075 | 5362 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5363 | { |
5364 | struct nfs_server *server = NFS_SERVER(inode); | |
5365 | struct nfs4_exception exception = { }; | |
5366 | int err; | |
5367 | do { | |
e6f81075 | 5368 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5369 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5370 | switch (err) { |
5371 | case -NFS4ERR_STALE_STATEID: | |
5372 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5373 | case 0: |
5374 | return 0; | |
5375 | } | |
5376 | err = nfs4_handle_exception(server, err, &exception); | |
5377 | } while (exception.retry); | |
5378 | return err; | |
5379 | } | |
5380 | ||
5381 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5382 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5383 | ||
5384 | /* | |
5385 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5386 | */ | |
5387 | static unsigned long | |
5388 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5389 | { | |
416ad3c9 | 5390 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5391 | timeout <<= 1; |
5392 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5393 | return NFS4_LOCK_MAXTIMEOUT; | |
5394 | return timeout; | |
5395 | } | |
5396 | ||
1da177e4 LT |
5397 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5398 | { | |
5399 | struct inode *inode = state->inode; | |
5400 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5401 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5402 | struct nfs_lockt_args arg = { |
1da177e4 | 5403 | .fh = NFS_FH(inode), |
911d1aaf | 5404 | .fl = request, |
1da177e4 | 5405 | }; |
911d1aaf TM |
5406 | struct nfs_lockt_res res = { |
5407 | .denied = request, | |
1da177e4 LT |
5408 | }; |
5409 | struct rpc_message msg = { | |
5410 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5411 | .rpc_argp = &arg, | |
5412 | .rpc_resp = &res, | |
5413 | .rpc_cred = state->owner->so_cred, | |
5414 | }; | |
1da177e4 LT |
5415 | struct nfs4_lock_state *lsp; |
5416 | int status; | |
5417 | ||
911d1aaf | 5418 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5419 | status = nfs4_set_lock_state(state, request); |
5420 | if (status != 0) | |
5421 | goto out; | |
5422 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5423 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5424 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5425 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5426 | switch (status) { |
5427 | case 0: | |
5428 | request->fl_type = F_UNLCK; | |
5429 | break; | |
5430 | case -NFS4ERR_DENIED: | |
5431 | status = 0; | |
1da177e4 | 5432 | } |
70cc6487 | 5433 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5434 | request->fl_ops = NULL; |
8d0a8a9d | 5435 | out: |
1da177e4 LT |
5436 | return status; |
5437 | } | |
5438 | ||
5439 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5440 | { | |
5441 | struct nfs4_exception exception = { }; | |
5442 | int err; | |
5443 | ||
5444 | do { | |
d1b748a5 TM |
5445 | err = _nfs4_proc_getlk(state, cmd, request); |
5446 | trace_nfs4_get_lock(request, state, cmd, err); | |
5447 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5448 | &exception); |
5449 | } while (exception.retry); | |
5450 | return err; | |
5451 | } | |
5452 | ||
83bfff23 | 5453 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 LT |
5454 | { |
5455 | int res = 0; | |
5456 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5457 | case FL_POSIX: | |
83bfff23 | 5458 | res = posix_lock_inode_wait(inode, fl); |
1da177e4 LT |
5459 | break; |
5460 | case FL_FLOCK: | |
83bfff23 | 5461 | res = flock_lock_inode_wait(inode, fl); |
1da177e4 LT |
5462 | break; |
5463 | default: | |
5464 | BUG(); | |
5465 | } | |
1da177e4 LT |
5466 | return res; |
5467 | } | |
5468 | ||
faf5f49c | 5469 | struct nfs4_unlockdata { |
911d1aaf TM |
5470 | struct nfs_locku_args arg; |
5471 | struct nfs_locku_res res; | |
faf5f49c TM |
5472 | struct nfs4_lock_state *lsp; |
5473 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5474 | struct file_lock fl; |
5475 | const struct nfs_server *server; | |
26e976a8 | 5476 | unsigned long timestamp; |
faf5f49c TM |
5477 | }; |
5478 | ||
911d1aaf TM |
5479 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5480 | struct nfs_open_context *ctx, | |
5481 | struct nfs4_lock_state *lsp, | |
5482 | struct nfs_seqid *seqid) | |
5483 | { | |
5484 | struct nfs4_unlockdata *p; | |
5485 | struct inode *inode = lsp->ls_state->inode; | |
5486 | ||
8535b2be | 5487 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5488 | if (p == NULL) |
5489 | return NULL; | |
5490 | p->arg.fh = NFS_FH(inode); | |
5491 | p->arg.fl = &p->fl; | |
5492 | p->arg.seqid = seqid; | |
c1d51931 | 5493 | p->res.seqid = seqid; |
911d1aaf TM |
5494 | p->lsp = lsp; |
5495 | atomic_inc(&lsp->ls_count); | |
5496 | /* Ensure we don't close file until we're done freeing locks! */ | |
5497 | p->ctx = get_nfs_open_context(ctx); | |
5498 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5499 | p->server = NFS_SERVER(inode); | |
5500 | return p; | |
5501 | } | |
5502 | ||
06f814a3 | 5503 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5504 | { |
963d8fe5 | 5505 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5506 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5507 | nfs4_put_lock_state(calldata->lsp); |
5508 | put_nfs_open_context(calldata->ctx); | |
5509 | kfree(calldata); | |
faf5f49c TM |
5510 | } |
5511 | ||
963d8fe5 | 5512 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5513 | { |
963d8fe5 | 5514 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5515 | |
14516c3a TM |
5516 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5517 | return; | |
faf5f49c TM |
5518 | switch (task->tk_status) { |
5519 | case 0: | |
26e976a8 | 5520 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5521 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5522 | if (nfs4_update_lock_stateid(calldata->lsp, |
5523 | &calldata->res.stateid)) | |
5524 | break; | |
9e33bed5 TM |
5525 | case -NFS4ERR_BAD_STATEID: |
5526 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5527 | case -NFS4ERR_STALE_STATEID: |
5528 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5529 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5530 | &calldata->lsp->ls_stateid)) | |
5531 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5532 | break; |
5533 | default: | |
8478eaa1 N |
5534 | if (nfs4_async_handle_error(task, calldata->server, |
5535 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5536 | rpc_restart_call_prepare(task); |
faf5f49c | 5537 | } |
2b1bc308 | 5538 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5539 | } |
5540 | ||
4ce70ada | 5541 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5542 | { |
4ce70ada | 5543 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5544 | |
911d1aaf | 5545 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5546 | goto out_wait; |
425c1d4e | 5547 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5548 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5549 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5550 | goto out_no_action; |
faf5f49c | 5551 | } |
26e976a8 | 5552 | calldata->timestamp = jiffies; |
035168ab | 5553 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5554 | &calldata->arg.seq_args, |
2240a9e2 TM |
5555 | &calldata->res.seq_res, |
5556 | task) != 0) | |
5557 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5558 | return; |
5559 | out_no_action: | |
5560 | task->tk_action = NULL; | |
5561 | out_wait: | |
5562 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5563 | } |
5564 | ||
963d8fe5 | 5565 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5566 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5567 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5568 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5569 | }; |
5570 | ||
a5d16a4d TM |
5571 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5572 | struct nfs_open_context *ctx, | |
5573 | struct nfs4_lock_state *lsp, | |
5574 | struct nfs_seqid *seqid) | |
5575 | { | |
5576 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5577 | struct rpc_message msg = { |
5578 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5579 | .rpc_cred = ctx->cred, | |
5580 | }; | |
c970aa85 TM |
5581 | struct rpc_task_setup task_setup_data = { |
5582 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5583 | .rpc_message = &msg, |
c970aa85 | 5584 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5585 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5586 | .flags = RPC_TASK_ASYNC, |
5587 | }; | |
a5d16a4d | 5588 | |
fa940720 WAA |
5589 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5590 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5591 | ||
137d6aca FF |
5592 | /* Ensure this is an unlock - when canceling a lock, the |
5593 | * canceled lock is passed in, and it won't be an unlock. | |
5594 | */ | |
5595 | fl->fl_type = F_UNLCK; | |
5596 | ||
a5d16a4d TM |
5597 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5598 | if (data == NULL) { | |
5599 | nfs_free_seqid(seqid); | |
5600 | return ERR_PTR(-ENOMEM); | |
5601 | } | |
5602 | ||
a9c92d6b | 5603 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5604 | msg.rpc_argp = &data->arg; |
5605 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5606 | task_setup_data.callback_data = data; |
5607 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5608 | } |
5609 | ||
faf5f49c TM |
5610 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5611 | { | |
65b62a29 TM |
5612 | struct inode *inode = state->inode; |
5613 | struct nfs4_state_owner *sp = state->owner; | |
5614 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5615 | struct nfs_seqid *seqid; |
1da177e4 | 5616 | struct nfs4_lock_state *lsp; |
06f814a3 | 5617 | struct rpc_task *task; |
b4019c0e | 5618 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5619 | int status = 0; |
536ff0f8 | 5620 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5621 | |
8d0a8a9d | 5622 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5623 | /* Unlock _before_ we do the RPC call */ |
5624 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5625 | /* Exclude nfs_delegation_claim_locks() */ |
5626 | mutex_lock(&sp->so_delegreturn_mutex); | |
5627 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5628 | down_read(&nfsi->rwsem); |
83bfff23 | 5629 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5630 | up_read(&nfsi->rwsem); |
65b62a29 | 5631 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5632 | goto out; |
19e03c57 TM |
5633 | } |
5634 | up_read(&nfsi->rwsem); | |
65b62a29 | 5635 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5636 | if (status != 0) |
9b073574 TM |
5637 | goto out; |
5638 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5639 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5640 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5641 | goto out; | |
b4019c0e TM |
5642 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5643 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5644 | status = -ENOMEM; |
badc76dd | 5645 | if (IS_ERR(seqid)) |
9b073574 | 5646 | goto out; |
cd3758e3 | 5647 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5648 | status = PTR_ERR(task); |
5649 | if (IS_ERR(task)) | |
9b073574 | 5650 | goto out; |
a5d16a4d | 5651 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5652 | rpc_put_task(task); |
9b073574 | 5653 | out: |
536ff0f8 | 5654 | request->fl_flags = fl_flags; |
d1b748a5 | 5655 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5656 | return status; |
5657 | } | |
5658 | ||
a5d16a4d TM |
5659 | struct nfs4_lockdata { |
5660 | struct nfs_lock_args arg; | |
5661 | struct nfs_lock_res res; | |
5662 | struct nfs4_lock_state *lsp; | |
5663 | struct nfs_open_context *ctx; | |
5664 | struct file_lock fl; | |
26e976a8 | 5665 | unsigned long timestamp; |
a5d16a4d TM |
5666 | int rpc_status; |
5667 | int cancelled; | |
66179efe | 5668 | struct nfs_server *server; |
a5d16a4d TM |
5669 | }; |
5670 | ||
5671 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5672 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5673 | gfp_t gfp_mask) | |
1da177e4 | 5674 | { |
a5d16a4d TM |
5675 | struct nfs4_lockdata *p; |
5676 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5677 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5678 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5679 | |
8535b2be | 5680 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5681 | if (p == NULL) |
5682 | return NULL; | |
5683 | ||
5684 | p->arg.fh = NFS_FH(inode); | |
5685 | p->arg.fl = &p->fl; | |
8535b2be | 5686 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5687 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5688 | goto out_free; |
b4019c0e TM |
5689 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5690 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5691 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5692 | goto out_free_seqid; |
7539bbab | 5693 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5694 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5695 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5696 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5697 | p->lsp = lsp; |
66179efe | 5698 | p->server = server; |
a5d16a4d TM |
5699 | atomic_inc(&lsp->ls_count); |
5700 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5701 | get_file(fl->fl_file); |
a5d16a4d TM |
5702 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5703 | return p; | |
2f74c0a0 TM |
5704 | out_free_seqid: |
5705 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5706 | out_free: |
5707 | kfree(p); | |
5708 | return NULL; | |
5709 | } | |
5710 | ||
5711 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5712 | { | |
5713 | struct nfs4_lockdata *data = calldata; | |
5714 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5715 | |
3110ff80 | 5716 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5717 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5718 | goto out_wait; |
a5d16a4d | 5719 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5720 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5721 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5722 | goto out_release_lock_seqid; |
8fe72bac | 5723 | } |
425c1d4e TM |
5724 | nfs4_stateid_copy(&data->arg.open_stateid, |
5725 | &state->open_stateid); | |
a5d16a4d | 5726 | data->arg.new_lock_owner = 1; |
c1d51931 | 5727 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5728 | } else { |
2f74c0a0 | 5729 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5730 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5731 | &data->lsp->ls_stateid); | |
5732 | } | |
5d422301 TM |
5733 | if (!nfs4_valid_open_stateid(state)) { |
5734 | data->rpc_status = -EBADF; | |
5735 | task->tk_action = NULL; | |
5736 | goto out_release_open_seqid; | |
5737 | } | |
26e976a8 | 5738 | data->timestamp = jiffies; |
035168ab TM |
5739 | if (nfs4_setup_sequence(data->server, |
5740 | &data->arg.seq_args, | |
2240a9e2 | 5741 | &data->res.seq_res, |
d9afbd1b | 5742 | task) == 0) |
66179efe | 5743 | return; |
5d422301 | 5744 | out_release_open_seqid: |
2240a9e2 TM |
5745 | nfs_release_seqid(data->arg.open_seqid); |
5746 | out_release_lock_seqid: | |
5747 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5748 | out_wait: |
5749 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5750 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5751 | } |
5752 | ||
a5d16a4d TM |
5753 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5754 | { | |
5755 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5756 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5757 | |
3110ff80 | 5758 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5759 | |
14516c3a TM |
5760 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5761 | return; | |
66179efe | 5762 | |
a5d16a4d | 5763 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5764 | switch (task->tk_status) { |
5765 | case 0: | |
2b0143b5 | 5766 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5767 | data->timestamp); |
c69899a1 TM |
5768 | if (data->arg.new_lock) { |
5769 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5770 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5771 | rpc_restart_call_prepare(task); |
5772 | break; | |
5773 | } | |
5774 | } | |
39071e6f TM |
5775 | if (data->arg.new_lock_owner != 0) { |
5776 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5777 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5778 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5779 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5780 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5781 | break; |
5782 | case -NFS4ERR_BAD_STATEID: | |
5783 | case -NFS4ERR_OLD_STATEID: | |
5784 | case -NFS4ERR_STALE_STATEID: | |
5785 | case -NFS4ERR_EXPIRED: | |
5786 | if (data->arg.new_lock_owner != 0) { | |
5787 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5788 | &lsp->ls_state->open_stateid)) | |
5789 | rpc_restart_call_prepare(task); | |
5790 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5791 | &lsp->ls_stateid)) | |
5792 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5793 | } |
3110ff80 | 5794 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5795 | } |
5796 | ||
5797 | static void nfs4_lock_release(void *calldata) | |
5798 | { | |
5799 | struct nfs4_lockdata *data = calldata; | |
5800 | ||
3110ff80 | 5801 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5802 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5803 | if (data->cancelled != 0) { |
5804 | struct rpc_task *task; | |
5805 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5806 | data->arg.lock_seqid); | |
5807 | if (!IS_ERR(task)) | |
bf294b41 | 5808 | rpc_put_task_async(task); |
3110ff80 | 5809 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5810 | } else |
5811 | nfs_free_seqid(data->arg.lock_seqid); | |
5812 | nfs4_put_lock_state(data->lsp); | |
5813 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5814 | fput(data->fl.fl_file); |
a5d16a4d | 5815 | kfree(data); |
3110ff80 | 5816 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5817 | } |
5818 | ||
5819 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5820 | .rpc_call_prepare = nfs4_lock_prepare, | |
5821 | .rpc_call_done = nfs4_lock_done, | |
5822 | .rpc_release = nfs4_lock_release, | |
5823 | }; | |
5824 | ||
2bee72a6 TM |
5825 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5826 | { | |
2bee72a6 TM |
5827 | switch (error) { |
5828 | case -NFS4ERR_ADMIN_REVOKED: | |
5829 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5830 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5831 | if (new_lock_owner != 0 || |
795a88c9 | 5832 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5833 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5834 | break; |
5835 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5836 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5837 | case -NFS4ERR_EXPIRED: |
5838 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5839 | }; |
5840 | } | |
5841 | ||
afe6c27c | 5842 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5843 | { |
5844 | struct nfs4_lockdata *data; | |
5845 | struct rpc_task *task; | |
5138fde0 TM |
5846 | struct rpc_message msg = { |
5847 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5848 | .rpc_cred = state->owner->so_cred, | |
5849 | }; | |
c970aa85 TM |
5850 | struct rpc_task_setup task_setup_data = { |
5851 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5852 | .rpc_message = &msg, |
c970aa85 | 5853 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5854 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5855 | .flags = RPC_TASK_ASYNC, |
5856 | }; | |
a5d16a4d TM |
5857 | int ret; |
5858 | ||
3110ff80 | 5859 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5860 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5861 | fl->fl_u.nfs4_fl.owner, |
5862 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5863 | if (data == NULL) |
5864 | return -ENOMEM; | |
5865 | if (IS_SETLKW(cmd)) | |
5866 | data->arg.block = 1; | |
a9c92d6b | 5867 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5868 | msg.rpc_argp = &data->arg; |
5869 | msg.rpc_resp = &data->res; | |
c970aa85 | 5870 | task_setup_data.callback_data = data; |
8fe72bac TM |
5871 | if (recovery_type > NFS_LOCK_NEW) { |
5872 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5873 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5874 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5875 | } else |
5876 | data->arg.new_lock = 1; | |
c970aa85 | 5877 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5878 | if (IS_ERR(task)) |
a5d16a4d | 5879 | return PTR_ERR(task); |
a5d16a4d TM |
5880 | ret = nfs4_wait_for_completion_rpc_task(task); |
5881 | if (ret == 0) { | |
5882 | ret = data->rpc_status; | |
2bee72a6 TM |
5883 | if (ret) |
5884 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5885 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5886 | } else |
5887 | data->cancelled = 1; | |
e6b3c4db | 5888 | rpc_put_task(task); |
3110ff80 | 5889 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5890 | return ret; |
1da177e4 LT |
5891 | } |
5892 | ||
5893 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5894 | { | |
202b50dc | 5895 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5896 | struct nfs4_exception exception = { |
5897 | .inode = state->inode, | |
5898 | }; | |
202b50dc TM |
5899 | int err; |
5900 | ||
5901 | do { | |
42a2d13e TM |
5902 | /* Cache the lock if possible... */ |
5903 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5904 | return 0; | |
afe6c27c | 5905 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5906 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5907 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5908 | break; |
5909 | nfs4_handle_exception(server, err, &exception); | |
5910 | } while (exception.retry); | |
5911 | return err; | |
1da177e4 LT |
5912 | } |
5913 | ||
5914 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5915 | { | |
202b50dc | 5916 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5917 | struct nfs4_exception exception = { |
5918 | .inode = state->inode, | |
5919 | }; | |
202b50dc TM |
5920 | int err; |
5921 | ||
6bfc93ef TM |
5922 | err = nfs4_set_lock_state(state, request); |
5923 | if (err != 0) | |
5924 | return err; | |
f6de7a39 | 5925 | if (!recover_lost_locks) { |
ef1820f9 N |
5926 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5927 | return 0; | |
5928 | } | |
202b50dc | 5929 | do { |
42a2d13e TM |
5930 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5931 | return 0; | |
afe6c27c | 5932 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5933 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5934 | switch (err) { |
5935 | default: | |
5936 | goto out; | |
5937 | case -NFS4ERR_GRACE: | |
5938 | case -NFS4ERR_DELAY: | |
5939 | nfs4_handle_exception(server, err, &exception); | |
5940 | err = 0; | |
5941 | } | |
202b50dc | 5942 | } while (exception.retry); |
a9ed2e25 | 5943 | out: |
202b50dc | 5944 | return err; |
1da177e4 LT |
5945 | } |
5946 | ||
f062eb6c | 5947 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5948 | /** |
5949 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5950 | * | |
5951 | * @state: NFSv4 state for an inode | |
5952 | * | |
5953 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5954 | * Otherwise a negative NFS4ERR value is returned. | |
5955 | */ | |
b01dd1d8 | 5956 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5957 | { |
eb64cf96 | 5958 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5959 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5960 | struct nfs_server *server = NFS_SERVER(state->inode); |
5961 | ||
b01dd1d8 | 5962 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5963 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
5964 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
5965 | ||
5966 | status = nfs41_test_stateid(server, | |
5967 | &lsp->ls_stateid, | |
5968 | cred); | |
08cb47fa | 5969 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 5970 | if (status != NFS_OK) { |
3e60ffdd CL |
5971 | /* Free the stateid unless the server |
5972 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5973 | if (status != -NFS4ERR_BAD_STATEID) |
5974 | nfs41_free_stateid(server, | |
ab7cb0df TM |
5975 | &lsp->ls_stateid, |
5976 | cred); | |
795a88c9 | 5977 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5978 | ret = status; |
5979 | } | |
5980 | } | |
5981 | }; | |
5982 | ||
5983 | return ret; | |
5984 | } | |
5985 | ||
5986 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5987 | { | |
5988 | int status = NFS_OK; | |
5989 | ||
5990 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5991 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5992 | if (status != NFS_OK) |
5993 | status = nfs4_lock_expired(state, request); | |
5994 | return status; | |
f062eb6c BS |
5995 | } |
5996 | #endif | |
5997 | ||
1da177e4 LT |
5998 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5999 | { | |
19e03c57 | 6000 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 6001 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6002 | int status = -ENOLCK; |
1da177e4 | 6003 | |
8e469ebd TM |
6004 | if ((fl_flags & FL_POSIX) && |
6005 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6006 | goto out; | |
6bfc93ef | 6007 | /* Is this a delegated open? */ |
6bfc93ef TM |
6008 | status = nfs4_set_lock_state(state, request); |
6009 | if (status != 0) | |
6010 | goto out; | |
01c3b861 | 6011 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6012 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6013 | if (status < 0) |
6014 | goto out; | |
19e03c57 | 6015 | down_read(&nfsi->rwsem); |
01c3b861 | 6016 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6017 | /* Yes: cache locks! */ |
01c3b861 | 6018 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6019 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6020 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6021 | up_read(&nfsi->rwsem); |
9a99af49 | 6022 | goto out; |
9a99af49 | 6023 | } |
19e03c57 | 6024 | up_read(&nfsi->rwsem); |
c69899a1 | 6025 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6026 | out: |
6027 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6028 | return status; |
6029 | } | |
6030 | ||
6031 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6032 | { | |
a1d0b5ee TM |
6033 | struct nfs4_exception exception = { |
6034 | .state = state, | |
05ffe24f | 6035 | .inode = state->inode, |
a1d0b5ee | 6036 | }; |
1da177e4 LT |
6037 | int err; |
6038 | ||
6039 | do { | |
965b5d67 | 6040 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 6041 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
6042 | if (err == -NFS4ERR_DENIED) |
6043 | err = -EAGAIN; | |
1da177e4 | 6044 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6045 | err, &exception); |
1da177e4 LT |
6046 | } while (exception.retry); |
6047 | return err; | |
6048 | } | |
6049 | ||
6050 | static int | |
6051 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6052 | { | |
6053 | struct nfs_open_context *ctx; | |
6054 | struct nfs4_state *state; | |
6055 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6056 | int status; | |
6057 | ||
6058 | /* verify open state */ | |
cd3758e3 | 6059 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6060 | state = ctx->state; |
6061 | ||
6062 | if (request->fl_start < 0 || request->fl_end < 0) | |
6063 | return -EINVAL; | |
6064 | ||
d953126a TM |
6065 | if (IS_GETLK(cmd)) { |
6066 | if (state != NULL) | |
6067 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6068 | return 0; | |
6069 | } | |
1da177e4 LT |
6070 | |
6071 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6072 | return -EINVAL; | |
6073 | ||
d953126a TM |
6074 | if (request->fl_type == F_UNLCK) { |
6075 | if (state != NULL) | |
6076 | return nfs4_proc_unlck(state, cmd, request); | |
6077 | return 0; | |
6078 | } | |
1da177e4 | 6079 | |
d953126a TM |
6080 | if (state == NULL) |
6081 | return -ENOLCK; | |
55725513 TM |
6082 | /* |
6083 | * Don't rely on the VFS having checked the file open mode, | |
6084 | * since it won't do this for flock() locks. | |
6085 | */ | |
f44106e2 | 6086 | switch (request->fl_type) { |
55725513 TM |
6087 | case F_RDLCK: |
6088 | if (!(filp->f_mode & FMODE_READ)) | |
6089 | return -EBADF; | |
6090 | break; | |
6091 | case F_WRLCK: | |
6092 | if (!(filp->f_mode & FMODE_WRITE)) | |
6093 | return -EBADF; | |
6094 | } | |
6095 | ||
1da177e4 LT |
6096 | do { |
6097 | status = nfs4_proc_setlk(state, cmd, request); | |
6098 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6099 | break; | |
6100 | timeout = nfs4_set_lock_task_retry(timeout); | |
6101 | status = -ERESTARTSYS; | |
6102 | if (signalled()) | |
6103 | break; | |
6104 | } while(status < 0); | |
1da177e4 LT |
6105 | return status; |
6106 | } | |
6107 | ||
db4f2e63 | 6108 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6109 | { |
6110 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6111 | int err; |
6112 | ||
6113 | err = nfs4_set_lock_state(state, fl); | |
6114 | if (err != 0) | |
db4f2e63 | 6115 | return err; |
4a706fa0 | 6116 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6117 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6118 | } |
6b3b5496 | 6119 | |
cf470c3e TM |
6120 | struct nfs_release_lockowner_data { |
6121 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6122 | struct nfs_server *server; |
cf470c3e | 6123 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6124 | struct nfs_release_lockowner_res res; |
60ea6812 | 6125 | unsigned long timestamp; |
cf470c3e TM |
6126 | }; |
6127 | ||
fbd4bfd1 CL |
6128 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6129 | { | |
6130 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6131 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6132 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6133 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6134 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6135 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6136 | } |
6137 | ||
6138 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6139 | { | |
6140 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6141 | struct nfs_server *server = data->server; |
6142 | ||
b7e63a10 | 6143 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6144 | |
6145 | switch (task->tk_status) { | |
6146 | case 0: | |
6147 | renew_lease(server, data->timestamp); | |
6148 | break; | |
6149 | case -NFS4ERR_STALE_CLIENTID: | |
6150 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6151 | nfs4_schedule_lease_recovery(server->nfs_client); |
6152 | break; | |
60ea6812 CL |
6153 | case -NFS4ERR_LEASE_MOVED: |
6154 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6155 | if (nfs4_async_handle_error(task, server, |
6156 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6157 | rpc_restart_call_prepare(task); |
6158 | } | |
fbd4bfd1 CL |
6159 | } |
6160 | ||
d3c7b7cc TM |
6161 | static void nfs4_release_lockowner_release(void *calldata) |
6162 | { | |
cf470c3e | 6163 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6164 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6165 | kfree(calldata); |
6166 | } | |
6167 | ||
17280175 | 6168 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6169 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6170 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6171 | .rpc_release = nfs4_release_lockowner_release, |
6172 | }; | |
6173 | ||
f1cdae87 JL |
6174 | static void |
6175 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6176 | { |
cf470c3e | 6177 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6178 | struct rpc_message msg = { |
6179 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6180 | }; | |
6181 | ||
6182 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6183 | return; |
fbd4bfd1 | 6184 | |
cf470c3e TM |
6185 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6186 | if (!data) | |
f1cdae87 | 6187 | return; |
cf470c3e | 6188 | data->lsp = lsp; |
5ae67c4f | 6189 | data->server = server; |
cf470c3e TM |
6190 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6191 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6192 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6193 | |
cf470c3e | 6194 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6195 | msg.rpc_resp = &data->res; |
6196 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6197 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6198 | } |
6199 | ||
aa1870af BF |
6200 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6201 | ||
64c2ce8b AK |
6202 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
6203 | const void *buf, size_t buflen, | |
6204 | int flags, int type) | |
6b3b5496 | 6205 | { |
64c2ce8b AK |
6206 | if (strcmp(key, "") != 0) |
6207 | return -EINVAL; | |
4b580ee3 | 6208 | |
2b0143b5 | 6209 | return nfs4_proc_set_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6210 | } |
6211 | ||
64c2ce8b AK |
6212 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
6213 | void *buf, size_t buflen, int type) | |
6b3b5496 | 6214 | { |
64c2ce8b AK |
6215 | if (strcmp(key, "") != 0) |
6216 | return -EINVAL; | |
aa1870af | 6217 | |
2b0143b5 | 6218 | return nfs4_proc_get_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6219 | } |
6220 | ||
64c2ce8b AK |
6221 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
6222 | size_t list_len, const char *name, | |
6223 | size_t name_len, int type) | |
6b3b5496 | 6224 | { |
64c2ce8b | 6225 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 6226 | |
2b0143b5 | 6227 | if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)))) |
096455a2 | 6228 | return 0; |
64c2ce8b AK |
6229 | |
6230 | if (list && len <= list_len) | |
6231 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 6232 | return len; |
6b3b5496 BF |
6233 | } |
6234 | ||
c9bccef6 DQ |
6235 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6236 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
6237 | { | |
6238 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
6239 | } | |
6240 | ||
6241 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
6242 | const void *buf, size_t buflen, | |
6243 | int flags, int type) | |
6244 | { | |
6245 | if (security_ismaclabel(key)) | |
6246 | return nfs4_set_security_label(dentry, buf, buflen); | |
6247 | ||
6248 | return -EOPNOTSUPP; | |
6249 | } | |
6250 | ||
6251 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
6252 | void *buf, size_t buflen, int type) | |
6253 | { | |
6254 | if (security_ismaclabel(key)) | |
2b0143b5 | 6255 | return nfs4_get_security_label(d_inode(dentry), buf, buflen); |
c9bccef6 DQ |
6256 | return -EOPNOTSUPP; |
6257 | } | |
6258 | ||
6259 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
6260 | size_t list_len, const char *name, | |
6261 | size_t name_len, int type) | |
6262 | { | |
6263 | size_t len = 0; | |
6264 | ||
2b0143b5 DH |
6265 | if (nfs_server_capable(d_inode(dentry), NFS_CAP_SECURITY_LABEL)) { |
6266 | len = security_inode_listsecurity(d_inode(dentry), NULL, 0); | |
c9bccef6 | 6267 | if (list && len <= list_len) |
2b0143b5 | 6268 | security_inode_listsecurity(d_inode(dentry), list, len); |
c9bccef6 DQ |
6269 | } |
6270 | return len; | |
6271 | } | |
6272 | ||
6273 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6274 | .prefix = XATTR_SECURITY_PREFIX, | |
6275 | .list = nfs4_xattr_list_nfs4_label, | |
6276 | .get = nfs4_xattr_get_nfs4_label, | |
6277 | .set = nfs4_xattr_set_nfs4_label, | |
6278 | }; | |
6279 | #endif | |
6280 | ||
6281 | ||
533eb461 AA |
6282 | /* |
6283 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6284 | */ | |
69aaaae1 TM |
6285 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6286 | { | |
533eb461 AA |
6287 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6288 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6289 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6290 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6291 | return; |
6292 | ||
6293 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6294 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6295 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6296 | fattr->nlink = 2; | |
6297 | } | |
6298 | ||
f05d147f BS |
6299 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6300 | const struct qstr *name, | |
6301 | struct nfs4_fs_locations *fs_locations, | |
6302 | struct page *page) | |
683b57b4 TM |
6303 | { |
6304 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6305 | u32 bitmask[3] = { |
361e624f | 6306 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6307 | }; |
6308 | struct nfs4_fs_locations_arg args = { | |
6309 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6310 | .name = name, |
683b57b4 TM |
6311 | .page = page, |
6312 | .bitmask = bitmask, | |
6313 | }; | |
22958463 BH |
6314 | struct nfs4_fs_locations_res res = { |
6315 | .fs_locations = fs_locations, | |
6316 | }; | |
683b57b4 TM |
6317 | struct rpc_message msg = { |
6318 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6319 | .rpc_argp = &args, | |
22958463 | 6320 | .rpc_resp = &res, |
683b57b4 TM |
6321 | }; |
6322 | int status; | |
6323 | ||
3110ff80 | 6324 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6325 | |
6326 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6327 | * is not supported */ | |
6328 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6329 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6330 | else | |
6331 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6332 | ||
c228fd3a | 6333 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6334 | fs_locations->server = server; |
830b8e33 | 6335 | fs_locations->nlocations = 0; |
f05d147f | 6336 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6337 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6338 | return status; |
6339 | } | |
6340 | ||
f05d147f BS |
6341 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6342 | const struct qstr *name, | |
6343 | struct nfs4_fs_locations *fs_locations, | |
6344 | struct page *page) | |
db0a9593 BS |
6345 | { |
6346 | struct nfs4_exception exception = { }; | |
6347 | int err; | |
6348 | do { | |
078ea3df TM |
6349 | err = _nfs4_proc_fs_locations(client, dir, name, |
6350 | fs_locations, page); | |
6351 | trace_nfs4_get_fs_locations(dir, name, err); | |
6352 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6353 | &exception); |
6354 | } while (exception.retry); | |
6355 | return err; | |
6356 | } | |
6357 | ||
b03d735b CL |
6358 | /* |
6359 | * This operation also signals the server that this client is | |
6360 | * performing migration recovery. The server can stop returning | |
6361 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6362 | * appended to this compound to identify the client ID which is | |
6363 | * performing recovery. | |
6364 | */ | |
6365 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6366 | struct nfs4_fs_locations *locations, | |
6367 | struct page *page, struct rpc_cred *cred) | |
6368 | { | |
6369 | struct nfs_server *server = NFS_SERVER(inode); | |
6370 | struct rpc_clnt *clnt = server->client; | |
6371 | u32 bitmask[2] = { | |
6372 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6373 | }; | |
6374 | struct nfs4_fs_locations_arg args = { | |
6375 | .clientid = server->nfs_client->cl_clientid, | |
6376 | .fh = NFS_FH(inode), | |
6377 | .page = page, | |
6378 | .bitmask = bitmask, | |
6379 | .migration = 1, /* skip LOOKUP */ | |
6380 | .renew = 1, /* append RENEW */ | |
6381 | }; | |
6382 | struct nfs4_fs_locations_res res = { | |
6383 | .fs_locations = locations, | |
6384 | .migration = 1, | |
6385 | .renew = 1, | |
6386 | }; | |
6387 | struct rpc_message msg = { | |
6388 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6389 | .rpc_argp = &args, | |
6390 | .rpc_resp = &res, | |
6391 | .rpc_cred = cred, | |
6392 | }; | |
6393 | unsigned long now = jiffies; | |
6394 | int status; | |
6395 | ||
6396 | nfs_fattr_init(&locations->fattr); | |
6397 | locations->server = server; | |
6398 | locations->nlocations = 0; | |
6399 | ||
6400 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6401 | nfs4_set_sequence_privileged(&args.seq_args); | |
6402 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6403 | &args.seq_args, &res.seq_res); | |
6404 | if (status) | |
6405 | return status; | |
6406 | ||
6407 | renew_lease(server, now); | |
6408 | return 0; | |
6409 | } | |
6410 | ||
6411 | #ifdef CONFIG_NFS_V4_1 | |
6412 | ||
6413 | /* | |
6414 | * This operation also signals the server that this client is | |
6415 | * performing migration recovery. The server can stop asserting | |
6416 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6417 | * performing this operation is identified in the SEQUENCE | |
6418 | * operation in this compound. | |
6419 | * | |
6420 | * When the client supports GETATTR(fs_locations_info), it can | |
6421 | * be plumbed in here. | |
6422 | */ | |
6423 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6424 | struct nfs4_fs_locations *locations, | |
6425 | struct page *page, struct rpc_cred *cred) | |
6426 | { | |
6427 | struct nfs_server *server = NFS_SERVER(inode); | |
6428 | struct rpc_clnt *clnt = server->client; | |
6429 | u32 bitmask[2] = { | |
6430 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6431 | }; | |
6432 | struct nfs4_fs_locations_arg args = { | |
6433 | .fh = NFS_FH(inode), | |
6434 | .page = page, | |
6435 | .bitmask = bitmask, | |
6436 | .migration = 1, /* skip LOOKUP */ | |
6437 | }; | |
6438 | struct nfs4_fs_locations_res res = { | |
6439 | .fs_locations = locations, | |
6440 | .migration = 1, | |
6441 | }; | |
6442 | struct rpc_message msg = { | |
6443 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6444 | .rpc_argp = &args, | |
6445 | .rpc_resp = &res, | |
6446 | .rpc_cred = cred, | |
6447 | }; | |
6448 | int status; | |
6449 | ||
6450 | nfs_fattr_init(&locations->fattr); | |
6451 | locations->server = server; | |
6452 | locations->nlocations = 0; | |
6453 | ||
6454 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6455 | nfs4_set_sequence_privileged(&args.seq_args); | |
6456 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6457 | &args.seq_args, &res.seq_res); | |
6458 | if (status == NFS4_OK && | |
6459 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6460 | status = -NFS4ERR_LEASE_MOVED; | |
6461 | return status; | |
6462 | } | |
6463 | ||
6464 | #endif /* CONFIG_NFS_V4_1 */ | |
6465 | ||
6466 | /** | |
6467 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6468 | * @inode: inode on FSID that is migrating | |
6469 | * @locations: result of query | |
6470 | * @page: buffer | |
6471 | * @cred: credential to use for this operation | |
6472 | * | |
6473 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6474 | * operation failed, or a negative errno if a local error occurred. | |
6475 | * | |
6476 | * On success, "locations" is filled in, but if the server has | |
6477 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6478 | * asserted. | |
6479 | * | |
6480 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6481 | * from this client that require migration recovery. | |
6482 | */ | |
6483 | int nfs4_proc_get_locations(struct inode *inode, | |
6484 | struct nfs4_fs_locations *locations, | |
6485 | struct page *page, struct rpc_cred *cred) | |
6486 | { | |
6487 | struct nfs_server *server = NFS_SERVER(inode); | |
6488 | struct nfs_client *clp = server->nfs_client; | |
6489 | const struct nfs4_mig_recovery_ops *ops = | |
6490 | clp->cl_mvops->mig_recovery_ops; | |
6491 | struct nfs4_exception exception = { }; | |
6492 | int status; | |
6493 | ||
6494 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6495 | (unsigned long long)server->fsid.major, | |
6496 | (unsigned long long)server->fsid.minor, | |
6497 | clp->cl_hostname); | |
6498 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6499 | ||
6500 | do { | |
6501 | status = ops->get_locations(inode, locations, page, cred); | |
6502 | if (status != -NFS4ERR_DELAY) | |
6503 | break; | |
6504 | nfs4_handle_exception(server, status, &exception); | |
6505 | } while (exception.retry); | |
6506 | return status; | |
6507 | } | |
6508 | ||
44c99933 CL |
6509 | /* |
6510 | * This operation also signals the server that this client is | |
6511 | * performing "lease moved" recovery. The server can stop | |
6512 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6513 | * is appended to this compound to identify the client ID which is | |
6514 | * performing recovery. | |
6515 | */ | |
6516 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6517 | { | |
6518 | struct nfs_server *server = NFS_SERVER(inode); | |
6519 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6520 | struct rpc_clnt *clnt = server->client; | |
6521 | struct nfs4_fsid_present_arg args = { | |
6522 | .fh = NFS_FH(inode), | |
6523 | .clientid = clp->cl_clientid, | |
6524 | .renew = 1, /* append RENEW */ | |
6525 | }; | |
6526 | struct nfs4_fsid_present_res res = { | |
6527 | .renew = 1, | |
6528 | }; | |
6529 | struct rpc_message msg = { | |
6530 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6531 | .rpc_argp = &args, | |
6532 | .rpc_resp = &res, | |
6533 | .rpc_cred = cred, | |
6534 | }; | |
6535 | unsigned long now = jiffies; | |
6536 | int status; | |
6537 | ||
6538 | res.fh = nfs_alloc_fhandle(); | |
6539 | if (res.fh == NULL) | |
6540 | return -ENOMEM; | |
6541 | ||
6542 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6543 | nfs4_set_sequence_privileged(&args.seq_args); | |
6544 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6545 | &args.seq_args, &res.seq_res); | |
6546 | nfs_free_fhandle(res.fh); | |
6547 | if (status) | |
6548 | return status; | |
6549 | ||
6550 | do_renew_lease(clp, now); | |
6551 | return 0; | |
6552 | } | |
6553 | ||
6554 | #ifdef CONFIG_NFS_V4_1 | |
6555 | ||
6556 | /* | |
6557 | * This operation also signals the server that this client is | |
6558 | * performing "lease moved" recovery. The server can stop asserting | |
6559 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6560 | * this operation is identified in the SEQUENCE operation in this | |
6561 | * compound. | |
6562 | */ | |
6563 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6564 | { | |
6565 | struct nfs_server *server = NFS_SERVER(inode); | |
6566 | struct rpc_clnt *clnt = server->client; | |
6567 | struct nfs4_fsid_present_arg args = { | |
6568 | .fh = NFS_FH(inode), | |
6569 | }; | |
6570 | struct nfs4_fsid_present_res res = { | |
6571 | }; | |
6572 | struct rpc_message msg = { | |
6573 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6574 | .rpc_argp = &args, | |
6575 | .rpc_resp = &res, | |
6576 | .rpc_cred = cred, | |
6577 | }; | |
6578 | int status; | |
6579 | ||
6580 | res.fh = nfs_alloc_fhandle(); | |
6581 | if (res.fh == NULL) | |
6582 | return -ENOMEM; | |
6583 | ||
6584 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6585 | nfs4_set_sequence_privileged(&args.seq_args); | |
6586 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6587 | &args.seq_args, &res.seq_res); | |
6588 | nfs_free_fhandle(res.fh); | |
6589 | if (status == NFS4_OK && | |
6590 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6591 | status = -NFS4ERR_LEASE_MOVED; | |
6592 | return status; | |
6593 | } | |
6594 | ||
6595 | #endif /* CONFIG_NFS_V4_1 */ | |
6596 | ||
6597 | /** | |
6598 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6599 | * @inode: inode on FSID to check | |
6600 | * @cred: credential to use for this operation | |
6601 | * | |
6602 | * Server indicates whether the FSID is present, moved, or not | |
6603 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6604 | * condition for this client ID. | |
6605 | * | |
6606 | * Returns NFS4_OK if the FSID is present on this server, | |
6607 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6608 | * NFS4ERR code if some error occurred on the server, or a | |
6609 | * negative errno if a local failure occurred. | |
6610 | */ | |
6611 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6612 | { | |
6613 | struct nfs_server *server = NFS_SERVER(inode); | |
6614 | struct nfs_client *clp = server->nfs_client; | |
6615 | const struct nfs4_mig_recovery_ops *ops = | |
6616 | clp->cl_mvops->mig_recovery_ops; | |
6617 | struct nfs4_exception exception = { }; | |
6618 | int status; | |
6619 | ||
6620 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6621 | (unsigned long long)server->fsid.major, | |
6622 | (unsigned long long)server->fsid.minor, | |
6623 | clp->cl_hostname); | |
6624 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6625 | ||
6626 | do { | |
6627 | status = ops->fsid_present(inode, cred); | |
6628 | if (status != -NFS4ERR_DELAY) | |
6629 | break; | |
6630 | nfs4_handle_exception(server, status, &exception); | |
6631 | } while (exception.retry); | |
6632 | return status; | |
6633 | } | |
6634 | ||
5ec16a85 | 6635 | /** |
a5250def WAA |
6636 | * If 'use_integrity' is true and the state managment nfs_client |
6637 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6638 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6639 | * Considerations sections. Otherwise, just use the user cred with the | |
6640 | * filesystem's rpc_client. | |
5ec16a85 | 6641 | */ |
a5250def | 6642 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6643 | { |
6644 | int status; | |
6645 | struct nfs4_secinfo_arg args = { | |
6646 | .dir_fh = NFS_FH(dir), | |
6647 | .name = name, | |
6648 | }; | |
6649 | struct nfs4_secinfo_res res = { | |
6650 | .flavors = flavors, | |
6651 | }; | |
6652 | struct rpc_message msg = { | |
6653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6654 | .rpc_argp = &args, | |
6655 | .rpc_resp = &res, | |
6656 | }; | |
a5250def | 6657 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6658 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6659 | |
6660 | if (use_integrity) { | |
6661 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6662 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6663 | msg.rpc_cred = cred; | |
a5250def | 6664 | } |
5a5ea0d4 BS |
6665 | |
6666 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6667 | |
6668 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6669 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6670 | ||
a5250def WAA |
6671 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6672 | &res.seq_res, 0); | |
5a5ea0d4 | 6673 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6674 | |
7cb852df WAA |
6675 | if (cred) |
6676 | put_rpccred(cred); | |
a5250def | 6677 | |
5a5ea0d4 BS |
6678 | return status; |
6679 | } | |
6680 | ||
72de53ec BS |
6681 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6682 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6683 | { |
6684 | struct nfs4_exception exception = { }; | |
6685 | int err; | |
6686 | do { | |
a5250def WAA |
6687 | err = -NFS4ERR_WRONGSEC; |
6688 | ||
6689 | /* try to use integrity protection with machine cred */ | |
6690 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6691 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6692 | ||
6693 | /* | |
6694 | * if unable to use integrity protection, or SECINFO with | |
6695 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6696 | * disallowed by spec, but exists in deployed servers) use | |
6697 | * the current filesystem's rpc_client and the user cred. | |
6698 | */ | |
6699 | if (err == -NFS4ERR_WRONGSEC) | |
6700 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6701 | ||
078ea3df TM |
6702 | trace_nfs4_secinfo(dir, name, err); |
6703 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6704 | &exception); |
6705 | } while (exception.retry); | |
6706 | return err; | |
6707 | } | |
6708 | ||
557134a3 | 6709 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6710 | /* |
6711 | * Check the exchange flags returned by the server for invalid flags, having | |
6712 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6713 | * DS flags set. | |
6714 | */ | |
6715 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6716 | { | |
6717 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6718 | goto out_inval; | |
6719 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6720 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6721 | goto out_inval; | |
6722 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6723 | goto out_inval; | |
6724 | return NFS_OK; | |
6725 | out_inval: | |
6726 | return -NFS4ERR_INVAL; | |
6727 | } | |
6728 | ||
78fe0f41 | 6729 | static bool |
79d4e1f0 CL |
6730 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6731 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6732 | { |
6733 | if (a->server_scope_sz == b->server_scope_sz && | |
6734 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6735 | return true; | |
6736 | ||
6737 | return false; | |
6738 | } | |
6739 | ||
7c44f1ae WAA |
6740 | /* |
6741 | * nfs4_proc_bind_conn_to_session() | |
6742 | * | |
6743 | * The 4.1 client currently uses the same TCP connection for the | |
6744 | * fore and backchannel. | |
6745 | */ | |
2cf047c9 | 6746 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6747 | { |
6748 | int status; | |
71a097c6 TM |
6749 | struct nfs41_bind_conn_to_session_args args = { |
6750 | .client = clp, | |
6751 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6752 | }; | |
7c44f1ae WAA |
6753 | struct nfs41_bind_conn_to_session_res res; |
6754 | struct rpc_message msg = { | |
6755 | .rpc_proc = | |
6756 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6757 | .rpc_argp = &args, |
7c44f1ae | 6758 | .rpc_resp = &res, |
2cf047c9 | 6759 | .rpc_cred = cred, |
7c44f1ae WAA |
6760 | }; |
6761 | ||
6762 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6763 | |
71a097c6 TM |
6764 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6765 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6766 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae WAA |
6767 | |
6768 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6769 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6770 | if (status == 0) { |
71a097c6 | 6771 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6772 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6773 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6774 | status = -EIO; | |
71a097c6 | 6775 | goto out; |
7c44f1ae | 6776 | } |
71a097c6 | 6777 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6778 | dprintk("NFS: %s: Unexpected direction from server\n", |
6779 | __func__); | |
6780 | status = -EIO; | |
71a097c6 | 6781 | goto out; |
7c44f1ae | 6782 | } |
71a097c6 | 6783 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6784 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6785 | __func__); | |
6786 | status = -EIO; | |
71a097c6 | 6787 | goto out; |
7c44f1ae WAA |
6788 | } |
6789 | } | |
7c44f1ae WAA |
6790 | out: |
6791 | dprintk("<-- %s status= %d\n", __func__, status); | |
6792 | return status; | |
6793 | } | |
6794 | ||
99fe60d0 | 6795 | /* |
fa940720 WAA |
6796 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6797 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6798 | */ |
6799 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6800 | .how = SP4_MACH_CRED, | |
6801 | .enforce.u.words = { | |
6802 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6803 | 1 << (OP_EXCHANGE_ID - 32) | | |
6804 | 1 << (OP_CREATE_SESSION - 32) | | |
6805 | 1 << (OP_DESTROY_SESSION - 32) | | |
6806 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6807 | }, |
6808 | .allow.u.words = { | |
6809 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6810 | 1 << (OP_LOCKU) | |
6811 | 1 << (OP_COMMIT), | |
8b5bee2e | 6812 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6813 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6814 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6815 | 1 << (OP_FREE_STATEID - 32) | |
6816 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6817 | } |
6818 | }; | |
6819 | ||
6820 | /* | |
6821 | * Select the state protection mode for client `clp' given the server results | |
6822 | * from exchange_id in `sp'. | |
99fe60d0 | 6823 | * |
2031cd1a WAA |
6824 | * Returns 0 on success, negative errno otherwise. |
6825 | */ | |
6826 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6827 | struct nfs41_state_protection *sp) | |
6828 | { | |
6829 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6830 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6831 | 1 << (OP_EXCHANGE_ID - 32) | | |
6832 | 1 << (OP_CREATE_SESSION - 32) | | |
6833 | 1 << (OP_DESTROY_SESSION - 32) | | |
6834 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6835 | }; | |
6836 | unsigned int i; | |
6837 | ||
6838 | if (sp->how == SP4_MACH_CRED) { | |
6839 | /* Print state protect result */ | |
6840 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6841 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6842 | if (test_bit(i, sp->enforce.u.longs)) | |
6843 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6844 | if (test_bit(i, sp->allow.u.longs)) | |
6845 | dfprintk(MOUNT, " allow op %d\n", i); | |
6846 | } | |
6847 | ||
6848 | /* make sure nothing is on enforce list that isn't supported */ | |
6849 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6850 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6851 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6852 | return -EINVAL; | |
6853 | } | |
6854 | } | |
6855 | ||
6856 | /* | |
6857 | * Minimal mode - state operations are allowed to use machine | |
6858 | * credential. Note this already happens by default, so the | |
6859 | * client doesn't have to do anything more than the negotiation. | |
6860 | * | |
6861 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6862 | * we're already using the machine cred for exchange_id | |
6863 | * and will never use a different cred. | |
6864 | */ | |
6865 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6866 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6867 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6868 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6869 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6870 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6871 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6872 | } else { | |
6873 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6874 | return -EINVAL; | |
6875 | } | |
fa940720 WAA |
6876 | |
6877 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6878 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6879 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6880 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6881 | } | |
8b5bee2e WAA |
6882 | |
6883 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6884 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6885 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6886 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6887 | } | |
3787d506 WAA |
6888 | |
6889 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6890 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6891 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6892 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6893 | } | |
8c21c62c WAA |
6894 | |
6895 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6896 | dfprintk(MOUNT, " write mode enabled\n"); | |
6897 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6898 | } | |
6899 | ||
6900 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6901 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6902 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6903 | } | |
2031cd1a WAA |
6904 | } |
6905 | ||
6906 | return 0; | |
6907 | } | |
6908 | ||
6909 | /* | |
6910 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6911 | * |
2031cd1a | 6912 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6913 | */ |
2031cd1a WAA |
6914 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6915 | u32 sp4_how) | |
99fe60d0 BH |
6916 | { |
6917 | nfs4_verifier verifier; | |
6918 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6919 | .verifier = &verifier, |
99fe60d0 | 6920 | .client = clp, |
cd3fadec | 6921 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6922 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6923 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6924 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6925 | #else | |
6926 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6927 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6928 | #endif | |
99fe60d0 BH |
6929 | }; |
6930 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6931 | 0 |
99fe60d0 BH |
6932 | }; |
6933 | int status; | |
6934 | struct rpc_message msg = { | |
6935 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6936 | .rpc_argp = &args, | |
6937 | .rpc_resp = &res, | |
6938 | .rpc_cred = cred, | |
6939 | }; | |
99fe60d0 | 6940 | |
f092075d | 6941 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
6942 | |
6943 | status = nfs4_init_uniform_client_string(clp); | |
6944 | if (status) | |
3a6bb738 | 6945 | goto out; |
3a6bb738 JL |
6946 | |
6947 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 6948 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 6949 | clp->cl_owner_id); |
99fe60d0 | 6950 | |
acdeb69d | 6951 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6952 | GFP_NOFS); |
acdeb69d | 6953 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6954 | status = -ENOMEM; |
6955 | goto out; | |
6956 | } | |
78fe0f41 | 6957 | |
79d4e1f0 | 6958 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6959 | GFP_NOFS); |
177313f1 | 6960 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6961 | status = -ENOMEM; |
acdeb69d | 6962 | goto out_server_owner; |
abe9a6d5 | 6963 | } |
78fe0f41 | 6964 | |
bbafffd2 | 6965 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 6966 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
6967 | status = -ENOMEM; |
6968 | goto out_server_scope; | |
6969 | } | |
6970 | ||
2031cd1a WAA |
6971 | switch (sp4_how) { |
6972 | case SP4_NONE: | |
6973 | args.state_protect.how = SP4_NONE; | |
6974 | break; | |
6975 | ||
6976 | case SP4_MACH_CRED: | |
6977 | args.state_protect = nfs4_sp4_mach_cred_request; | |
6978 | break; | |
6979 | ||
6980 | default: | |
6981 | /* unsupported! */ | |
6982 | WARN_ON_ONCE(1); | |
6983 | status = -EINVAL; | |
6b55970b | 6984 | goto out_impl_id; |
2031cd1a WAA |
6985 | } |
6986 | ||
1bd714f2 | 6987 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 6988 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 6989 | if (status == 0) |
32b01310 | 6990 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 6991 | |
2031cd1a WAA |
6992 | if (status == 0) |
6993 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
6994 | ||
acdeb69d | 6995 | if (status == 0) { |
32b01310 | 6996 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
6997 | clp->cl_exchange_flags = res.flags; |
6998 | /* Client ID is not confirmed */ | |
6999 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7000 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7001 | &clp->cl_session->session_state); | |
32b01310 | 7002 | clp->cl_seqid = res.seqid; |
e11259f9 | 7003 | } |
32b01310 | 7004 | |
acdeb69d CL |
7005 | kfree(clp->cl_serverowner); |
7006 | clp->cl_serverowner = res.server_owner; | |
7007 | res.server_owner = NULL; | |
78fe0f41 | 7008 | |
7d2ed9ac | 7009 | /* use the most recent implementation id */ |
59155546 CL |
7010 | kfree(clp->cl_implid); |
7011 | clp->cl_implid = res.impl_id; | |
6b55970b | 7012 | res.impl_id = NULL; |
7d2ed9ac | 7013 | |
177313f1 | 7014 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7015 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7016 | res.server_scope)) { |
7017 | dprintk("%s: server_scope mismatch detected\n", | |
7018 | __func__); | |
7019 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7020 | kfree(clp->cl_serverscope); |
7021 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7022 | } |
7023 | ||
177313f1 | 7024 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7025 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7026 | res.server_scope = NULL; |
abe9a6d5 | 7027 | } |
6b55970b | 7028 | } |
7d2ed9ac | 7029 | |
6b55970b KM |
7030 | out_impl_id: |
7031 | kfree(res.impl_id); | |
7d2ed9ac | 7032 | out_server_scope: |
abe9a6d5 | 7033 | kfree(res.server_scope); |
6b55970b KM |
7034 | out_server_owner: |
7035 | kfree(res.server_owner); | |
abe9a6d5 | 7036 | out: |
177313f1 | 7037 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7038 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7039 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7040 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7041 | clp->cl_implid->date.seconds, |
7042 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7043 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7044 | return status; |
7045 | } | |
7046 | ||
2031cd1a WAA |
7047 | /* |
7048 | * nfs4_proc_exchange_id() | |
7049 | * | |
7050 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7051 | * | |
7052 | * Since the clientid has expired, all compounds using sessions | |
7053 | * associated with the stale clientid will be returning | |
7054 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7055 | * be in some phase of session reset. | |
7056 | * | |
7057 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7058 | */ | |
7059 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7060 | { | |
7061 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7062 | int status; | |
7063 | ||
7064 | /* try SP4_MACH_CRED if krb5i/p */ | |
7065 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7066 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7067 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7068 | if (!status) | |
7069 | return 0; | |
7070 | } | |
7071 | ||
7072 | /* try SP4_NONE */ | |
7073 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7074 | } | |
7075 | ||
66245539 TM |
7076 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7077 | struct rpc_cred *cred) | |
7078 | { | |
7079 | struct rpc_message msg = { | |
7080 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7081 | .rpc_argp = clp, | |
7082 | .rpc_cred = cred, | |
7083 | }; | |
7084 | int status; | |
7085 | ||
7086 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7087 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7088 | if (status) |
02c67525 | 7089 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7090 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7091 | return status; | |
7092 | } | |
7093 | ||
7094 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7095 | struct rpc_cred *cred) | |
7096 | { | |
7097 | unsigned int loop; | |
7098 | int ret; | |
7099 | ||
7100 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7101 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7102 | switch (ret) { | |
7103 | case -NFS4ERR_DELAY: | |
7104 | case -NFS4ERR_CLIENTID_BUSY: | |
7105 | ssleep(1); | |
7106 | break; | |
7107 | default: | |
7108 | return ret; | |
7109 | } | |
7110 | } | |
7111 | return 0; | |
7112 | } | |
7113 | ||
7114 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7115 | { | |
7116 | struct rpc_cred *cred; | |
7117 | int ret = 0; | |
7118 | ||
7119 | if (clp->cl_mvops->minor_version < 1) | |
7120 | goto out; | |
7121 | if (clp->cl_exchange_flags == 0) | |
7122 | goto out; | |
05f4c350 CL |
7123 | if (clp->cl_preserve_clid) |
7124 | goto out; | |
73d8bde5 | 7125 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7126 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7127 | if (cred) | |
7128 | put_rpccred(cred); | |
7129 | switch (ret) { | |
7130 | case 0: | |
7131 | case -NFS4ERR_STALE_CLIENTID: | |
7132 | clp->cl_exchange_flags = 0; | |
7133 | } | |
7134 | out: | |
7135 | return ret; | |
7136 | } | |
7137 | ||
2050f0cc AA |
7138 | struct nfs4_get_lease_time_data { |
7139 | struct nfs4_get_lease_time_args *args; | |
7140 | struct nfs4_get_lease_time_res *res; | |
7141 | struct nfs_client *clp; | |
7142 | }; | |
7143 | ||
7144 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7145 | void *calldata) | |
7146 | { | |
2050f0cc AA |
7147 | struct nfs4_get_lease_time_data *data = |
7148 | (struct nfs4_get_lease_time_data *)calldata; | |
7149 | ||
7150 | dprintk("--> %s\n", __func__); | |
7151 | /* just setup sequence, do not trigger session recovery | |
7152 | since we're invoked within one */ | |
d9afbd1b TM |
7153 | nfs41_setup_sequence(data->clp->cl_session, |
7154 | &data->args->la_seq_args, | |
7155 | &data->res->lr_seq_res, | |
7156 | task); | |
2050f0cc AA |
7157 | dprintk("<-- %s\n", __func__); |
7158 | } | |
7159 | ||
7160 | /* | |
7161 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7162 | * from sequence operation or clientid errors. | |
7163 | */ | |
7164 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7165 | { | |
7166 | struct nfs4_get_lease_time_data *data = | |
7167 | (struct nfs4_get_lease_time_data *)calldata; | |
7168 | ||
7169 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7170 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7171 | return; | |
2050f0cc AA |
7172 | switch (task->tk_status) { |
7173 | case -NFS4ERR_DELAY: | |
7174 | case -NFS4ERR_GRACE: | |
7175 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7176 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7177 | task->tk_status = 0; | |
a8a4ae3a AA |
7178 | /* fall through */ |
7179 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7180 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7181 | return; |
7182 | } | |
2050f0cc AA |
7183 | dprintk("<-- %s\n", __func__); |
7184 | } | |
7185 | ||
17280175 | 7186 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7187 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7188 | .rpc_call_done = nfs4_get_lease_time_done, | |
7189 | }; | |
7190 | ||
7191 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7192 | { | |
7193 | struct rpc_task *task; | |
7194 | struct nfs4_get_lease_time_args args; | |
7195 | struct nfs4_get_lease_time_res res = { | |
7196 | .lr_fsinfo = fsinfo, | |
7197 | }; | |
7198 | struct nfs4_get_lease_time_data data = { | |
7199 | .args = &args, | |
7200 | .res = &res, | |
7201 | .clp = clp, | |
7202 | }; | |
7203 | struct rpc_message msg = { | |
7204 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7205 | .rpc_argp = &args, | |
7206 | .rpc_resp = &res, | |
7207 | }; | |
7208 | struct rpc_task_setup task_setup = { | |
7209 | .rpc_client = clp->cl_rpcclient, | |
7210 | .rpc_message = &msg, | |
7211 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7212 | .callback_data = &data, |
7213 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7214 | }; |
7215 | int status; | |
7216 | ||
a9c92d6b | 7217 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7218 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7219 | dprintk("--> %s\n", __func__); |
7220 | task = rpc_run_task(&task_setup); | |
7221 | ||
7222 | if (IS_ERR(task)) | |
7223 | status = PTR_ERR(task); | |
7224 | else { | |
7225 | status = task->tk_status; | |
7226 | rpc_put_task(task); | |
7227 | } | |
7228 | dprintk("<-- %s return %d\n", __func__, status); | |
7229 | ||
7230 | return status; | |
7231 | } | |
7232 | ||
fc931582 AA |
7233 | /* |
7234 | * Initialize the values to be used by the client in CREATE_SESSION | |
7235 | * If nfs4_init_session set the fore channel request and response sizes, | |
7236 | * use them. | |
7237 | * | |
7238 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7239 | * always set csa_cachethis to FALSE because the current implementation | |
7240 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7241 | */ | |
7242 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7243 | { | |
18aad3d5 AA |
7244 | unsigned int max_rqst_sz, max_resp_sz; |
7245 | ||
7246 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7247 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7248 | |
fc931582 | 7249 | /* Fore channel attributes */ |
18aad3d5 AA |
7250 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7251 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7252 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7253 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7254 | |
7255 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7256 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7257 | __func__, |
7258 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7259 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7260 | |
7261 | /* Back channel attributes */ | |
fc931582 AA |
7262 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7263 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7264 | args->bc_attrs.max_resp_sz_cached = 0; | |
7265 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
7266 | args->bc_attrs.max_reqs = 1; | |
7267 | ||
7268 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7269 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7270 | __func__, | |
7271 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7272 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7273 | args->bc_attrs.max_reqs); | |
7274 | } | |
7275 | ||
79969dd1 TM |
7276 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7277 | struct nfs41_create_session_res *res) | |
8d35301d | 7278 | { |
43c2e885 | 7279 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7280 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7281 | |
43c2e885 BF |
7282 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7283 | return -EINVAL; | |
7284 | /* | |
7285 | * Our requested max_ops is the minimum we need; we're not | |
7286 | * prepared to break up compounds into smaller pieces than that. | |
7287 | * So, no point even trying to continue if the server won't | |
7288 | * cooperate: | |
7289 | */ | |
7290 | if (rcvd->max_ops < sent->max_ops) | |
7291 | return -EINVAL; | |
7292 | if (rcvd->max_reqs == 0) | |
7293 | return -EINVAL; | |
b4b9a0c1 VG |
7294 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7295 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7296 | return 0; |
8d35301d AA |
7297 | } |
7298 | ||
79969dd1 TM |
7299 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7300 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7301 | { |
7302 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7303 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7304 | |
b1c0df5f TM |
7305 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7306 | goto out; | |
43c2e885 BF |
7307 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7308 | return -EINVAL; | |
7309 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7310 | return -EINVAL; | |
7311 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7312 | return -EINVAL; | |
7313 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7314 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7315 | return -EINVAL; |
b4b9a0c1 | 7316 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7317 | return -EINVAL; |
b1c0df5f | 7318 | out: |
43c2e885 BF |
7319 | return 0; |
7320 | } | |
8d35301d | 7321 | |
8d35301d | 7322 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7323 | struct nfs41_create_session_res *res) |
8d35301d | 7324 | { |
43c2e885 | 7325 | int ret; |
8d35301d | 7326 | |
79969dd1 | 7327 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7328 | if (ret) |
7329 | return ret; | |
79969dd1 TM |
7330 | return nfs4_verify_back_channel_attrs(args, res); |
7331 | } | |
7332 | ||
7333 | static void nfs4_update_session(struct nfs4_session *session, | |
7334 | struct nfs41_create_session_res *res) | |
7335 | { | |
7336 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7337 | /* Mark client id and session as being confirmed */ |
7338 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7339 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7340 | session->flags = res->flags; |
7341 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7342 | if (res->flags & SESSION4_BACK_CHAN) |
7343 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7344 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7345 | } |
7346 | ||
848f5bda TM |
7347 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7348 | struct rpc_cred *cred) | |
fc931582 AA |
7349 | { |
7350 | struct nfs4_session *session = clp->cl_session; | |
7351 | struct nfs41_create_session_args args = { | |
7352 | .client = clp, | |
79969dd1 TM |
7353 | .clientid = clp->cl_clientid, |
7354 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7355 | .cb_program = NFS4_CALLBACK, |
7356 | }; | |
79969dd1 TM |
7357 | struct nfs41_create_session_res res; |
7358 | ||
fc931582 AA |
7359 | struct rpc_message msg = { |
7360 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7361 | .rpc_argp = &args, | |
7362 | .rpc_resp = &res, | |
848f5bda | 7363 | .rpc_cred = cred, |
fc931582 AA |
7364 | }; |
7365 | int status; | |
7366 | ||
7367 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7368 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7369 | |
1bd714f2 | 7370 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7371 | trace_nfs4_create_session(clp, status); |
fc931582 | 7372 | |
43095d39 | 7373 | if (!status) { |
8d35301d | 7374 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7375 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7376 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7377 | if (clp->cl_seqid == res.seqid) |
7378 | clp->cl_seqid++; | |
7379 | if (status) | |
7380 | goto out; | |
7381 | nfs4_update_session(session, &res); | |
fc931582 | 7382 | } |
79969dd1 | 7383 | out: |
fc931582 AA |
7384 | return status; |
7385 | } | |
7386 | ||
7387 | /* | |
7388 | * Issues a CREATE_SESSION operation to the server. | |
7389 | * It is the responsibility of the caller to verify the session is | |
7390 | * expired before calling this routine. | |
7391 | */ | |
848f5bda | 7392 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7393 | { |
7394 | int status; | |
7395 | unsigned *ptr; | |
fc931582 AA |
7396 | struct nfs4_session *session = clp->cl_session; |
7397 | ||
7398 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7399 | ||
848f5bda | 7400 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7401 | if (status) |
7402 | goto out; | |
7403 | ||
aacd5537 AA |
7404 | /* Init or reset the session slot tables */ |
7405 | status = nfs4_setup_session_slot_tables(session); | |
7406 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7407 | if (status) |
7408 | goto out; | |
7409 | ||
7410 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7411 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7412 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7413 | out: |
7414 | dprintk("<-- %s\n", __func__); | |
7415 | return status; | |
7416 | } | |
7417 | ||
0f3e66c6 AA |
7418 | /* |
7419 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7420 | * The caller must serialize access to this routine. | |
7421 | */ | |
848f5bda TM |
7422 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7423 | struct rpc_cred *cred) | |
0f3e66c6 | 7424 | { |
848f5bda TM |
7425 | struct rpc_message msg = { |
7426 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7427 | .rpc_argp = session, | |
7428 | .rpc_cred = cred, | |
7429 | }; | |
0f3e66c6 | 7430 | int status = 0; |
0f3e66c6 AA |
7431 | |
7432 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7433 | ||
7434 | /* session is still being setup */ | |
e11259f9 TM |
7435 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7436 | return 0; | |
0f3e66c6 | 7437 | |
1bd714f2 | 7438 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7439 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7440 | |
7441 | if (status) | |
08106ac7 | 7442 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7443 | "Session has been destroyed regardless...\n", status); |
7444 | ||
7445 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7446 | return status; | |
7447 | } | |
7448 | ||
fc01cea9 AA |
7449 | /* |
7450 | * Renew the cl_session lease. | |
7451 | */ | |
d5f8d3fe TM |
7452 | struct nfs4_sequence_data { |
7453 | struct nfs_client *clp; | |
7454 | struct nfs4_sequence_args args; | |
7455 | struct nfs4_sequence_res res; | |
7456 | }; | |
7457 | ||
dc96aef9 AB |
7458 | static void nfs41_sequence_release(void *data) |
7459 | { | |
d5f8d3fe TM |
7460 | struct nfs4_sequence_data *calldata = data; |
7461 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7462 | |
7135840f AB |
7463 | if (atomic_read(&clp->cl_count) > 1) |
7464 | nfs4_schedule_state_renewal(clp); | |
7465 | nfs_put_client(clp); | |
d5f8d3fe | 7466 | kfree(calldata); |
dc96aef9 AB |
7467 | } |
7468 | ||
aa5190d0 TM |
7469 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7470 | { | |
7471 | switch(task->tk_status) { | |
7472 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7473 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7474 | return -EAGAIN; | |
7475 | default: | |
0400a6b0 | 7476 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7477 | } |
7478 | return 0; | |
7479 | } | |
7480 | ||
dc96aef9 | 7481 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7482 | { |
d5f8d3fe TM |
7483 | struct nfs4_sequence_data *calldata = data; |
7484 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7485 | |
14516c3a TM |
7486 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7487 | return; | |
fc01cea9 | 7488 | |
c6d01c6f | 7489 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7490 | if (task->tk_status < 0) { |
7491 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7492 | if (atomic_read(&clp->cl_count) == 1) |
7493 | goto out; | |
fc01cea9 | 7494 | |
aa5190d0 TM |
7495 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7496 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7497 | return; |
7498 | } | |
7499 | } | |
fc01cea9 | 7500 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7501 | out: |
fc01cea9 AA |
7502 | dprintk("<-- %s\n", __func__); |
7503 | } | |
7504 | ||
7505 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7506 | { | |
d5f8d3fe TM |
7507 | struct nfs4_sequence_data *calldata = data; |
7508 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7509 | struct nfs4_sequence_args *args; |
7510 | struct nfs4_sequence_res *res; | |
7511 | ||
fc01cea9 AA |
7512 | args = task->tk_msg.rpc_argp; |
7513 | res = task->tk_msg.rpc_resp; | |
7514 | ||
d9afbd1b | 7515 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7516 | } |
7517 | ||
7518 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7519 | .rpc_call_done = nfs41_sequence_call_done, | |
7520 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7521 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7522 | }; |
7523 | ||
8fe72bac TM |
7524 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7525 | struct rpc_cred *cred, | |
7526 | bool is_privileged) | |
fc01cea9 | 7527 | { |
d5f8d3fe | 7528 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7529 | struct rpc_message msg = { |
7530 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7531 | .rpc_cred = cred, | |
7532 | }; | |
71ac6da9 TM |
7533 | struct rpc_task_setup task_setup_data = { |
7534 | .rpc_client = clp->cl_rpcclient, | |
7535 | .rpc_message = &msg, | |
8fe72bac | 7536 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7537 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7538 | }; |
fc01cea9 | 7539 | |
7135840f | 7540 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7541 | return ERR_PTR(-EIO); |
dfb4f309 | 7542 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7543 | if (calldata == NULL) { |
7135840f | 7544 | nfs_put_client(clp); |
71ac6da9 | 7545 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7546 | } |
a9c92d6b | 7547 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7548 | if (is_privileged) |
7549 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7550 | msg.rpc_argp = &calldata->args; |
7551 | msg.rpc_resp = &calldata->res; | |
7552 | calldata->clp = clp; | |
71ac6da9 | 7553 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7554 | |
71ac6da9 TM |
7555 | return rpc_run_task(&task_setup_data); |
7556 | } | |
7557 | ||
2f60ea6b | 7558 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7559 | { |
7560 | struct rpc_task *task; | |
7561 | int ret = 0; | |
7562 | ||
2f60ea6b | 7563 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7564 | return -EAGAIN; |
8fe72bac | 7565 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7566 | if (IS_ERR(task)) |
7567 | ret = PTR_ERR(task); | |
7568 | else | |
bf294b41 | 7569 | rpc_put_task_async(task); |
71ac6da9 TM |
7570 | dprintk("<-- %s status=%d\n", __func__, ret); |
7571 | return ret; | |
7572 | } | |
7573 | ||
7574 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7575 | { | |
7576 | struct rpc_task *task; | |
7577 | int ret; | |
7578 | ||
8fe72bac | 7579 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7580 | if (IS_ERR(task)) { |
7581 | ret = PTR_ERR(task); | |
7582 | goto out; | |
7583 | } | |
7584 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7585 | if (!ret) |
71ac6da9 TM |
7586 | ret = task->tk_status; |
7587 | rpc_put_task(task); | |
7588 | out: | |
7589 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7590 | return ret; | |
fc01cea9 AA |
7591 | } |
7592 | ||
fce5c838 RL |
7593 | struct nfs4_reclaim_complete_data { |
7594 | struct nfs_client *clp; | |
7595 | struct nfs41_reclaim_complete_args arg; | |
7596 | struct nfs41_reclaim_complete_res res; | |
7597 | }; | |
7598 | ||
7599 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7600 | { | |
7601 | struct nfs4_reclaim_complete_data *calldata = data; | |
7602 | ||
d9afbd1b TM |
7603 | nfs41_setup_sequence(calldata->clp->cl_session, |
7604 | &calldata->arg.seq_args, | |
7605 | &calldata->res.seq_res, | |
7606 | task); | |
fce5c838 RL |
7607 | } |
7608 | ||
aa5190d0 TM |
7609 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7610 | { | |
7611 | switch(task->tk_status) { | |
7612 | case 0: | |
7613 | case -NFS4ERR_COMPLETE_ALREADY: | |
7614 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7615 | break; | |
7616 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7617 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7618 | /* fall through */ |
7619 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7620 | return -EAGAIN; |
7621 | default: | |
0400a6b0 | 7622 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7623 | } |
7624 | return 0; | |
7625 | } | |
7626 | ||
fce5c838 RL |
7627 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7628 | { | |
7629 | struct nfs4_reclaim_complete_data *calldata = data; | |
7630 | struct nfs_client *clp = calldata->clp; | |
7631 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7632 | ||
7633 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7634 | if (!nfs41_sequence_done(task, res)) |
7635 | return; | |
fce5c838 | 7636 | |
c6d01c6f | 7637 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7638 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7639 | rpc_restart_call_prepare(task); | |
7640 | return; | |
7641 | } | |
fce5c838 RL |
7642 | dprintk("<-- %s\n", __func__); |
7643 | } | |
7644 | ||
7645 | static void nfs4_free_reclaim_complete_data(void *data) | |
7646 | { | |
7647 | struct nfs4_reclaim_complete_data *calldata = data; | |
7648 | ||
7649 | kfree(calldata); | |
7650 | } | |
7651 | ||
7652 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7653 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7654 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7655 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7656 | }; | |
7657 | ||
7658 | /* | |
7659 | * Issue a global reclaim complete. | |
7660 | */ | |
965e9c23 TM |
7661 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7662 | struct rpc_cred *cred) | |
fce5c838 RL |
7663 | { |
7664 | struct nfs4_reclaim_complete_data *calldata; | |
7665 | struct rpc_task *task; | |
7666 | struct rpc_message msg = { | |
7667 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7668 | .rpc_cred = cred, |
fce5c838 RL |
7669 | }; |
7670 | struct rpc_task_setup task_setup_data = { | |
7671 | .rpc_client = clp->cl_rpcclient, | |
7672 | .rpc_message = &msg, | |
7673 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7674 | .flags = RPC_TASK_ASYNC, | |
7675 | }; | |
7676 | int status = -ENOMEM; | |
7677 | ||
7678 | dprintk("--> %s\n", __func__); | |
8535b2be | 7679 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7680 | if (calldata == NULL) |
7681 | goto out; | |
7682 | calldata->clp = clp; | |
7683 | calldata->arg.one_fs = 0; | |
fce5c838 | 7684 | |
a9c92d6b | 7685 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7686 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7687 | msg.rpc_argp = &calldata->arg; |
7688 | msg.rpc_resp = &calldata->res; | |
7689 | task_setup_data.callback_data = calldata; | |
7690 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7691 | if (IS_ERR(task)) { |
fce5c838 | 7692 | status = PTR_ERR(task); |
acf82b85 DC |
7693 | goto out; |
7694 | } | |
c34c32ea AA |
7695 | status = nfs4_wait_for_completion_rpc_task(task); |
7696 | if (status == 0) | |
7697 | status = task->tk_status; | |
fce5c838 | 7698 | rpc_put_task(task); |
acf82b85 | 7699 | return 0; |
fce5c838 RL |
7700 | out: |
7701 | dprintk("<-- %s status=%d\n", __func__, status); | |
7702 | return status; | |
7703 | } | |
b1f69b75 AA |
7704 | |
7705 | static void | |
7706 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7707 | { | |
7708 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7709 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7710 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7711 | |
7712 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7713 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7714 | * right now covering the LAYOUTGET we are about to send. | |
7715 | * However, that is not so catastrophic, and there seems | |
7716 | * to be no way to prevent it completely. | |
7717 | */ | |
6ba7db34 | 7718 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7719 | &lgp->res.seq_res, task)) |
b1f69b75 | 7720 | return; |
cf7d63f1 FI |
7721 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7722 | NFS_I(lgp->args.inode)->layout, | |
ce6ab4f2 | 7723 | &lgp->args.range, |
cf7d63f1 FI |
7724 | lgp->args.ctx->state)) { |
7725 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7726 | } |
b1f69b75 AA |
7727 | } |
7728 | ||
7729 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7730 | { | |
7731 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7732 | struct inode *inode = lgp->args.inode; |
7733 | struct nfs_server *server = NFS_SERVER(inode); | |
7734 | struct pnfs_layout_hdr *lo; | |
7735 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7736 | unsigned long timeo, now, giveup; |
b1f69b75 | 7737 | |
ed7e5423 | 7738 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7739 | |
6ba7db34 | 7740 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7741 | goto out; |
b1f69b75 AA |
7742 | |
7743 | switch (task->tk_status) { | |
7744 | case 0: | |
ee314c2a | 7745 | goto out; |
ed7e5423 BH |
7746 | /* |
7747 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
7748 | * (or clients) writing to the same RAID stripe | |
7749 | */ | |
b1f69b75 | 7750 | case -NFS4ERR_LAYOUTTRYLATER: |
ed7e5423 BH |
7751 | /* |
7752 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7753 | * existing layout before getting a new one). | |
7754 | */ | |
b1f69b75 | 7755 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7756 | timeo = rpc_get_timeout(task->tk_client); |
7757 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7758 | now = jiffies; |
7759 | if (time_after(giveup, now)) { | |
7760 | unsigned long delay; | |
7761 | ||
7762 | /* Delay for: | |
7763 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7764 | * - One last time a jiffie before we give up | |
7765 | * - exponential backoff (time_now minus start_attempt) | |
7766 | */ | |
7767 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7768 | min((giveup - now - 1), | |
7769 | now - lgp->args.timestamp)); | |
7770 | ||
7771 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7772 | __func__, delay); | |
7773 | rpc_delay(task, delay); | |
7774 | task->tk_status = 0; | |
7775 | rpc_restart_call_prepare(task); | |
7776 | goto out; /* Do not call nfs4_async_handle_error() */ | |
7777 | } | |
ee314c2a TM |
7778 | break; |
7779 | case -NFS4ERR_EXPIRED: | |
7780 | case -NFS4ERR_BAD_STATEID: | |
7781 | spin_lock(&inode->i_lock); | |
7782 | lo = NFS_I(inode)->layout; | |
7783 | if (!lo || list_empty(&lo->plh_segs)) { | |
7784 | spin_unlock(&inode->i_lock); | |
7785 | /* If the open stateid was bad, then recover it. */ | |
7786 | state = lgp->args.ctx->state; | |
7787 | } else { | |
7788 | LIST_HEAD(head); | |
7789 | ||
defb8460 CH |
7790 | /* |
7791 | * Mark the bad layout state as invalid, then retry | |
7792 | * with the current stateid. | |
7793 | */ | |
ee314c2a TM |
7794 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7795 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7796 | pnfs_free_lseg_list(&head); |
defb8460 CH |
7797 | |
7798 | task->tk_status = 0; | |
7799 | rpc_restart_call_prepare(task); | |
b1f69b75 AA |
7800 | } |
7801 | } | |
8478eaa1 | 7802 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) |
ee314c2a TM |
7803 | rpc_restart_call_prepare(task); |
7804 | out: | |
b1f69b75 AA |
7805 | dprintk("<-- %s\n", __func__); |
7806 | } | |
7807 | ||
8554116e IK |
7808 | static size_t max_response_pages(struct nfs_server *server) |
7809 | { | |
7810 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7811 | return nfs_page_array_len(0, max_resp_sz); | |
7812 | } | |
7813 | ||
7814 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7815 | { | |
7816 | int i; | |
7817 | ||
7818 | if (!pages) | |
7819 | return; | |
7820 | ||
7821 | for (i = 0; i < size; i++) { | |
7822 | if (!pages[i]) | |
7823 | break; | |
7824 | __free_page(pages[i]); | |
7825 | } | |
7826 | kfree(pages); | |
7827 | } | |
7828 | ||
7829 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7830 | { | |
7831 | struct page **pages; | |
7832 | int i; | |
7833 | ||
7834 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7835 | if (!pages) { | |
7836 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7837 | return NULL; | |
7838 | } | |
7839 | ||
7840 | for (i = 0; i < size; i++) { | |
7841 | pages[i] = alloc_page(gfp_flags); | |
7842 | if (!pages[i]) { | |
7843 | dprintk("%s: failed to allocate page\n", __func__); | |
7844 | nfs4_free_pages(pages, size); | |
7845 | return NULL; | |
7846 | } | |
7847 | } | |
7848 | ||
7849 | return pages; | |
7850 | } | |
7851 | ||
b1f69b75 AA |
7852 | static void nfs4_layoutget_release(void *calldata) |
7853 | { | |
7854 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7855 | struct inode *inode = lgp->args.inode; |
7856 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7857 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7858 | |
7859 | dprintk("--> %s\n", __func__); | |
8554116e | 7860 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7861 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7862 | put_nfs_open_context(lgp->args.ctx); |
7863 | kfree(calldata); | |
7864 | dprintk("<-- %s\n", __func__); | |
7865 | } | |
7866 | ||
7867 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7868 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7869 | .rpc_call_done = nfs4_layoutget_done, | |
7870 | .rpc_release = nfs4_layoutget_release, | |
7871 | }; | |
7872 | ||
a0b0a6e3 TM |
7873 | struct pnfs_layout_segment * |
7874 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7875 | { |
a47970ff WAA |
7876 | struct inode *inode = lgp->args.inode; |
7877 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7878 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7879 | struct rpc_task *task; |
7880 | struct rpc_message msg = { | |
7881 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7882 | .rpc_argp = &lgp->args, | |
7883 | .rpc_resp = &lgp->res, | |
6ab59344 | 7884 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7885 | }; |
7886 | struct rpc_task_setup task_setup_data = { | |
7887 | .rpc_client = server->client, | |
7888 | .rpc_message = &msg, | |
7889 | .callback_ops = &nfs4_layoutget_call_ops, | |
7890 | .callback_data = lgp, | |
7891 | .flags = RPC_TASK_ASYNC, | |
7892 | }; | |
a0b0a6e3 | 7893 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7894 | int status = 0; |
7895 | ||
7896 | dprintk("--> %s\n", __func__); | |
7897 | ||
4bd5a980 PT |
7898 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
7899 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7900 | ||
8554116e IK |
7901 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7902 | if (!lgp->args.layout.pages) { | |
7903 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7904 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7905 | } |
7906 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7907 | lgp->args.timestamp = jiffies; |
8554116e | 7908 | |
35124a09 | 7909 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7910 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7911 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 7912 | |
b1f69b75 AA |
7913 | task = rpc_run_task(&task_setup_data); |
7914 | if (IS_ERR(task)) | |
a0b0a6e3 | 7915 | return ERR_CAST(task); |
b1f69b75 | 7916 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7917 | if (status == 0) |
7918 | status = task->tk_status; | |
1037e6ea TM |
7919 | trace_nfs4_layoutget(lgp->args.ctx, |
7920 | &lgp->args.range, | |
7921 | &lgp->res.range, | |
7922 | status); | |
085b7a45 WAA |
7923 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7924 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7925 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7926 | rpc_put_task(task); |
7927 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7928 | if (status) |
7929 | return ERR_PTR(status); | |
7930 | return lseg; | |
b1f69b75 AA |
7931 | } |
7932 | ||
cbe82603 BH |
7933 | static void |
7934 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7935 | { | |
7936 | struct nfs4_layoutreturn *lrp = calldata; | |
7937 | ||
7938 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7939 | nfs41_setup_sequence(lrp->clp->cl_session, |
7940 | &lrp->args.seq_args, | |
7941 | &lrp->res.seq_res, | |
7942 | task); | |
cbe82603 BH |
7943 | } |
7944 | ||
7945 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7946 | { | |
7947 | struct nfs4_layoutreturn *lrp = calldata; | |
7948 | struct nfs_server *server; | |
7949 | ||
7950 | dprintk("--> %s\n", __func__); | |
7951 | ||
6ba7db34 | 7952 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7953 | return; |
7954 | ||
7955 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
7956 | switch (task->tk_status) { |
7957 | default: | |
7958 | task->tk_status = 0; | |
7959 | case 0: | |
7960 | break; | |
7961 | case -NFS4ERR_DELAY: | |
8478eaa1 | 7962 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 7963 | break; |
d00c5d43 | 7964 | rpc_restart_call_prepare(task); |
cbe82603 BH |
7965 | return; |
7966 | } | |
cbe82603 BH |
7967 | dprintk("<-- %s\n", __func__); |
7968 | } | |
7969 | ||
7970 | static void nfs4_layoutreturn_release(void *calldata) | |
7971 | { | |
7972 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 7973 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 7974 | LIST_HEAD(freeme); |
cbe82603 BH |
7975 | |
7976 | dprintk("--> %s\n", __func__); | |
849b286f TM |
7977 | spin_lock(&lo->plh_inode->i_lock); |
7978 | if (lrp->res.lrs_present) | |
7979 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
c5d73716 | 7980 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range); |
d67ae825 | 7981 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f TM |
7982 | lo->plh_block_lgets--; |
7983 | spin_unlock(&lo->plh_inode->i_lock); | |
c5d73716 | 7984 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 7985 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 7986 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
7987 | kfree(calldata); |
7988 | dprintk("<-- %s\n", __func__); | |
7989 | } | |
7990 | ||
7991 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
7992 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
7993 | .rpc_call_done = nfs4_layoutreturn_done, | |
7994 | .rpc_release = nfs4_layoutreturn_release, | |
7995 | }; | |
7996 | ||
6c16605d | 7997 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
7998 | { |
7999 | struct rpc_task *task; | |
8000 | struct rpc_message msg = { | |
8001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8002 | .rpc_argp = &lrp->args, | |
8003 | .rpc_resp = &lrp->res, | |
9556000d | 8004 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8005 | }; |
8006 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8007 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8008 | .rpc_message = &msg, |
8009 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8010 | .callback_data = lrp, | |
8011 | }; | |
6c16605d | 8012 | int status = 0; |
cbe82603 BH |
8013 | |
8014 | dprintk("--> %s\n", __func__); | |
5a0ec8ac TM |
8015 | if (!sync) { |
8016 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8017 | if (!lrp->inode) { | |
8018 | nfs4_layoutreturn_release(lrp); | |
8019 | return -EAGAIN; | |
8020 | } | |
8021 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8022 | } | |
a9c92d6b | 8023 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8024 | task = rpc_run_task(&task_setup_data); |
8025 | if (IS_ERR(task)) | |
8026 | return PTR_ERR(task); | |
5a0ec8ac TM |
8027 | if (sync) |
8028 | status = task->tk_status; | |
1037e6ea | 8029 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
8030 | dprintk("<-- %s status=%d\n", __func__, status); |
8031 | rpc_put_task(task); | |
8032 | return status; | |
8033 | } | |
8034 | ||
b1f69b75 | 8035 | static int |
cd5875fe TM |
8036 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8037 | struct pnfs_device *pdev, | |
8038 | struct rpc_cred *cred) | |
b1f69b75 AA |
8039 | { |
8040 | struct nfs4_getdeviceinfo_args args = { | |
8041 | .pdev = pdev, | |
4e590803 TM |
8042 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8043 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8044 | }; |
8045 | struct nfs4_getdeviceinfo_res res = { | |
8046 | .pdev = pdev, | |
8047 | }; | |
8048 | struct rpc_message msg = { | |
8049 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8050 | .rpc_argp = &args, | |
8051 | .rpc_resp = &res, | |
cd5875fe | 8052 | .rpc_cred = cred, |
b1f69b75 AA |
8053 | }; |
8054 | int status; | |
8055 | ||
8056 | dprintk("--> %s\n", __func__); | |
7c513058 | 8057 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8058 | if (res.notification & ~args.notify_types) |
8059 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8060 | if (res.notification != args.notify_types) |
8061 | pdev->nocache = 1; | |
4e590803 | 8062 | |
b1f69b75 AA |
8063 | dprintk("<-- %s status=%d\n", __func__, status); |
8064 | ||
8065 | return status; | |
8066 | } | |
8067 | ||
cd5875fe TM |
8068 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8069 | struct pnfs_device *pdev, | |
8070 | struct rpc_cred *cred) | |
b1f69b75 AA |
8071 | { |
8072 | struct nfs4_exception exception = { }; | |
8073 | int err; | |
8074 | ||
8075 | do { | |
8076 | err = nfs4_handle_exception(server, | |
cd5875fe | 8077 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8078 | &exception); |
8079 | } while (exception.retry); | |
8080 | return err; | |
8081 | } | |
8082 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8083 | ||
863a3c6c AA |
8084 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8085 | { | |
8086 | struct nfs4_layoutcommit_data *data = calldata; | |
8087 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8088 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8089 | |
d9afbd1b TM |
8090 | nfs41_setup_sequence(session, |
8091 | &data->args.seq_args, | |
8092 | &data->res.seq_res, | |
8093 | task); | |
863a3c6c AA |
8094 | } |
8095 | ||
8096 | static void | |
8097 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8098 | { | |
8099 | struct nfs4_layoutcommit_data *data = calldata; | |
8100 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8101 | ||
6ba7db34 | 8102 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8103 | return; |
8104 | ||
8105 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8106 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8107 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8108 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8109 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8110 | task->tk_status = 0; |
e59d27e0 | 8111 | case 0: |
e59d27e0 TM |
8112 | break; |
8113 | default: | |
8478eaa1 | 8114 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8115 | rpc_restart_call_prepare(task); |
8116 | return; | |
8117 | } | |
8118 | } | |
863a3c6c AA |
8119 | } |
8120 | ||
8121 | static void nfs4_layoutcommit_release(void *calldata) | |
8122 | { | |
8123 | struct nfs4_layoutcommit_data *data = calldata; | |
8124 | ||
db29c089 | 8125 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8126 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8127 | data->res.fattr); | |
863a3c6c | 8128 | put_rpccred(data->cred); |
472e2594 | 8129 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8130 | kfree(data); |
8131 | } | |
8132 | ||
8133 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8134 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8135 | .rpc_call_done = nfs4_layoutcommit_done, | |
8136 | .rpc_release = nfs4_layoutcommit_release, | |
8137 | }; | |
8138 | ||
8139 | int | |
ef311537 | 8140 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8141 | { |
8142 | struct rpc_message msg = { | |
8143 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8144 | .rpc_argp = &data->args, | |
8145 | .rpc_resp = &data->res, | |
8146 | .rpc_cred = data->cred, | |
8147 | }; | |
8148 | struct rpc_task_setup task_setup_data = { | |
8149 | .task = &data->task, | |
8150 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8151 | .rpc_message = &msg, | |
8152 | .callback_ops = &nfs4_layoutcommit_ops, | |
8153 | .callback_data = data, | |
863a3c6c AA |
8154 | }; |
8155 | struct rpc_task *task; | |
8156 | int status = 0; | |
8157 | ||
b4839ebe KM |
8158 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8159 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8160 | data->args.lastbytewritten, |
8161 | data->args.inode->i_ino); | |
8162 | ||
472e2594 TM |
8163 | if (!sync) { |
8164 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8165 | if (data->inode == NULL) { | |
8166 | nfs4_layoutcommit_release(data); | |
8167 | return -EAGAIN; | |
8168 | } | |
8169 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8170 | } | |
a9c92d6b | 8171 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8172 | task = rpc_run_task(&task_setup_data); |
8173 | if (IS_ERR(task)) | |
8174 | return PTR_ERR(task); | |
472e2594 TM |
8175 | if (sync) |
8176 | status = task->tk_status; | |
1037e6ea | 8177 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
8178 | dprintk("%s: status %d\n", __func__, status); |
8179 | rpc_put_task(task); | |
8180 | return status; | |
8181 | } | |
fca78d6d | 8182 | |
97431204 AA |
8183 | /** |
8184 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8185 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8186 | */ | |
fca78d6d BS |
8187 | static int |
8188 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8189 | struct nfs_fsinfo *info, |
8190 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8191 | { |
8192 | struct nfs41_secinfo_no_name_args args = { | |
8193 | .style = SECINFO_STYLE_CURRENT_FH, | |
8194 | }; | |
8195 | struct nfs4_secinfo_res res = { | |
8196 | .flavors = flavors, | |
8197 | }; | |
8198 | struct rpc_message msg = { | |
8199 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8200 | .rpc_argp = &args, | |
8201 | .rpc_resp = &res, | |
8202 | }; | |
b1b3e136 | 8203 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8204 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8205 | int status; |
8206 | ||
8207 | if (use_integrity) { | |
8208 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8209 | cred = nfs4_get_clid_cred(server->nfs_client); |
8210 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8211 | } |
8212 | ||
8213 | dprintk("--> %s\n", __func__); | |
8214 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8215 | &res.seq_res, 0); | |
8216 | dprintk("<-- %s status=%d\n", __func__, status); | |
8217 | ||
7cb852df WAA |
8218 | if (cred) |
8219 | put_rpccred(cred); | |
b1b3e136 WAA |
8220 | |
8221 | return status; | |
fca78d6d BS |
8222 | } |
8223 | ||
8224 | static int | |
8225 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8226 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8227 | { | |
8228 | struct nfs4_exception exception = { }; | |
8229 | int err; | |
8230 | do { | |
b1b3e136 WAA |
8231 | /* first try using integrity protection */ |
8232 | err = -NFS4ERR_WRONGSEC; | |
8233 | ||
8234 | /* try to use integrity protection with machine cred */ | |
8235 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8236 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8237 | flavors, true); | |
8238 | ||
8239 | /* | |
8240 | * if unable to use integrity protection, or SECINFO with | |
8241 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8242 | * disallowed by spec, but exists in deployed servers) use | |
8243 | * the current filesystem's rpc_client and the user cred. | |
8244 | */ | |
8245 | if (err == -NFS4ERR_WRONGSEC) | |
8246 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8247 | flavors, false); | |
8248 | ||
fca78d6d BS |
8249 | switch (err) { |
8250 | case 0: | |
8251 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8252 | case -ENOTSUPP: |
05e9cfb4 | 8253 | goto out; |
fca78d6d BS |
8254 | default: |
8255 | err = nfs4_handle_exception(server, err, &exception); | |
8256 | } | |
8257 | } while (exception.retry); | |
05e9cfb4 | 8258 | out: |
fca78d6d BS |
8259 | return err; |
8260 | } | |
8261 | ||
8262 | static int | |
8263 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8264 | struct nfs_fsinfo *info) | |
8265 | { | |
8266 | int err; | |
8267 | struct page *page; | |
367156d9 | 8268 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8269 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8270 | struct nfs4_secinfo4 *secinfo; |
8271 | int i; | |
fca78d6d BS |
8272 | |
8273 | page = alloc_page(GFP_KERNEL); | |
8274 | if (!page) { | |
8275 | err = -ENOMEM; | |
8276 | goto out; | |
8277 | } | |
8278 | ||
8279 | flavors = page_address(page); | |
8280 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8281 | ||
8282 | /* | |
8283 | * Fall back on "guess and check" method if | |
8284 | * the server doesn't support SECINFO_NO_NAME | |
8285 | */ | |
78b19bae | 8286 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8287 | err = nfs4_find_root_sec(server, fhandle, info); |
8288 | goto out_freepage; | |
8289 | } | |
8290 | if (err) | |
8291 | goto out_freepage; | |
8292 | ||
58a8cf12 WAA |
8293 | for (i = 0; i < flavors->num_flavors; i++) { |
8294 | secinfo = &flavors->flavors[i]; | |
8295 | ||
8296 | switch (secinfo->flavor) { | |
8297 | case RPC_AUTH_NULL: | |
8298 | case RPC_AUTH_UNIX: | |
8299 | case RPC_AUTH_GSS: | |
8300 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8301 | &secinfo->flavor_info); | |
8302 | break; | |
8303 | default: | |
8304 | flavor = RPC_AUTH_MAXFLAVOR; | |
8305 | break; | |
8306 | } | |
8307 | ||
4d4b69dd WAA |
8308 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8309 | flavor = RPC_AUTH_MAXFLAVOR; | |
8310 | ||
58a8cf12 WAA |
8311 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8312 | err = nfs4_lookup_root_sec(server, fhandle, | |
8313 | info, flavor); | |
8314 | if (!err) | |
8315 | break; | |
8316 | } | |
8317 | } | |
8318 | ||
8319 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8320 | err = -EPERM; | |
fca78d6d BS |
8321 | |
8322 | out_freepage: | |
8323 | put_page(page); | |
8324 | if (err == -EACCES) | |
8325 | return -EPERM; | |
8326 | out: | |
8327 | return err; | |
8328 | } | |
1cab0652 | 8329 | |
ab7cb0df TM |
8330 | static int _nfs41_test_stateid(struct nfs_server *server, |
8331 | nfs4_stateid *stateid, | |
8332 | struct rpc_cred *cred) | |
7d974794 BS |
8333 | { |
8334 | int status; | |
8335 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8336 | .stateid = stateid, |
7d974794 BS |
8337 | }; |
8338 | struct nfs41_test_stateid_res res; | |
8339 | struct rpc_message msg = { | |
8340 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8341 | .rpc_argp = &args, | |
8342 | .rpc_resp = &res, | |
ab7cb0df | 8343 | .rpc_cred = cred, |
7d974794 | 8344 | }; |
3787d506 WAA |
8345 | struct rpc_clnt *rpc_client = server->client; |
8346 | ||
8347 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8348 | &rpc_client, &msg); | |
1cab0652 | 8349 | |
38527b15 | 8350 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8351 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8352 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8353 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8354 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8355 | if (status != NFS_OK) { |
8356 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8357 | return status; |
38527b15 CL |
8358 | } |
8359 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8360 | return -res.status; |
7d974794 BS |
8361 | } |
8362 | ||
38527b15 CL |
8363 | /** |
8364 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8365 | * | |
8366 | * @server: server / transport on which to perform the operation | |
8367 | * @stateid: state ID to test | |
ab7cb0df | 8368 | * @cred: credential |
38527b15 CL |
8369 | * |
8370 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8371 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8372 | * failed or the state ID is not currently valid. | |
8373 | */ | |
ab7cb0df TM |
8374 | static int nfs41_test_stateid(struct nfs_server *server, |
8375 | nfs4_stateid *stateid, | |
8376 | struct rpc_cred *cred) | |
7d974794 BS |
8377 | { |
8378 | struct nfs4_exception exception = { }; | |
8379 | int err; | |
8380 | do { | |
ab7cb0df | 8381 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8382 | if (err != -NFS4ERR_DELAY) |
8383 | break; | |
8384 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8385 | } while (exception.retry); |
8386 | return err; | |
8387 | } | |
9aeda35f | 8388 | |
7c1d5fae TM |
8389 | struct nfs_free_stateid_data { |
8390 | struct nfs_server *server; | |
8391 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8392 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8393 | }; |
8394 | ||
8395 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8396 | { | |
8397 | struct nfs_free_stateid_data *data = calldata; | |
8398 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8399 | &data->args.seq_args, | |
8400 | &data->res.seq_res, | |
8401 | task); | |
8402 | } | |
8403 | ||
8404 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8405 | { | |
8406 | struct nfs_free_stateid_data *data = calldata; | |
8407 | ||
8408 | nfs41_sequence_done(task, &data->res.seq_res); | |
8409 | ||
8410 | switch (task->tk_status) { | |
8411 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8412 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8413 | rpc_restart_call_prepare(task); |
8414 | } | |
8415 | } | |
8416 | ||
8417 | static void nfs41_free_stateid_release(void *calldata) | |
8418 | { | |
8419 | kfree(calldata); | |
8420 | } | |
8421 | ||
17f26b12 | 8422 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8423 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8424 | .rpc_call_done = nfs41_free_stateid_done, | |
8425 | .rpc_release = nfs41_free_stateid_release, | |
8426 | }; | |
8427 | ||
8428 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8429 | nfs4_stateid *stateid, | |
ab7cb0df | 8430 | struct rpc_cred *cred, |
7c1d5fae TM |
8431 | bool privileged) |
8432 | { | |
9aeda35f BS |
8433 | struct rpc_message msg = { |
8434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8435 | .rpc_cred = cred, |
9aeda35f | 8436 | }; |
7c1d5fae TM |
8437 | struct rpc_task_setup task_setup = { |
8438 | .rpc_client = server->client, | |
8439 | .rpc_message = &msg, | |
8440 | .callback_ops = &nfs41_free_stateid_ops, | |
8441 | .flags = RPC_TASK_ASYNC, | |
8442 | }; | |
8443 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8444 | |
3787d506 WAA |
8445 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8446 | &task_setup.rpc_client, &msg); | |
8447 | ||
38527b15 | 8448 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8449 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8450 | if (!data) | |
8451 | return ERR_PTR(-ENOMEM); | |
8452 | data->server = server; | |
8453 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8454 | ||
8455 | task_setup.callback_data = data; | |
8456 | ||
8457 | msg.rpc_argp = &data->args; | |
8458 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8459 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8460 | if (privileged) |
8461 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8462 | ||
8463 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8464 | } |
8465 | ||
38527b15 CL |
8466 | /** |
8467 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8468 | * | |
8469 | * @server: server / transport on which to perform the operation | |
8470 | * @stateid: state ID to release | |
ab7cb0df | 8471 | * @cred: credential |
38527b15 CL |
8472 | * |
8473 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8474 | * negative NFS4ERR value is returned. | |
8475 | */ | |
ab7cb0df TM |
8476 | static int nfs41_free_stateid(struct nfs_server *server, |
8477 | nfs4_stateid *stateid, | |
8478 | struct rpc_cred *cred) | |
9aeda35f | 8479 | { |
7c1d5fae TM |
8480 | struct rpc_task *task; |
8481 | int ret; | |
8482 | ||
ab7cb0df | 8483 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8484 | if (IS_ERR(task)) |
8485 | return PTR_ERR(task); | |
8486 | ret = rpc_wait_for_completion_task(task); | |
8487 | if (!ret) | |
8488 | ret = task->tk_status; | |
8489 | rpc_put_task(task); | |
8490 | return ret; | |
9aeda35f | 8491 | } |
36281caa | 8492 | |
f1cdae87 JL |
8493 | static void |
8494 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8495 | { |
8496 | struct rpc_task *task; | |
ab7cb0df | 8497 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8498 | |
ab7cb0df | 8499 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8500 | nfs4_free_lock_state(server, lsp); |
8501 | if (IS_ERR(task)) | |
f1cdae87 | 8502 | return; |
c8b2d0bf | 8503 | rpc_put_task(task); |
c8b2d0bf TM |
8504 | } |
8505 | ||
36281caa TM |
8506 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8507 | const nfs4_stateid *s2) | |
8508 | { | |
2d2f24ad | 8509 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8510 | return false; |
8511 | ||
2d2f24ad | 8512 | if (s1->seqid == s2->seqid) |
36281caa | 8513 | return true; |
2d2f24ad | 8514 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8515 | return true; |
8516 | ||
8517 | return false; | |
8518 | } | |
8519 | ||
557134a3 AA |
8520 | #endif /* CONFIG_NFS_V4_1 */ |
8521 | ||
36281caa TM |
8522 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8523 | const nfs4_stateid *s2) | |
8524 | { | |
f597c537 | 8525 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8526 | } |
8527 | ||
8528 | ||
17280175 | 8529 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8530 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8531 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8532 | .recover_open = nfs4_open_reclaim, |
8533 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8534 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8535 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8536 | }; |
8537 | ||
591d71cb | 8538 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8539 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8540 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8541 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8542 | .recover_open = nfs4_open_reclaim, | |
8543 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8544 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8545 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8546 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8547 | }; |
8548 | #endif /* CONFIG_NFS_V4_1 */ | |
8549 | ||
17280175 | 8550 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8551 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8552 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8553 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8554 | .recover_lock = nfs4_lock_expired, |
8555 | .establish_clid = nfs4_init_clientid, | |
8556 | }; | |
8557 | ||
8558 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8559 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8560 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8561 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8562 | .recover_open = nfs41_open_expired, |
8563 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8564 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8565 | }; |
591d71cb | 8566 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8567 | |
17280175 | 8568 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8569 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8570 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8571 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8572 | }; |
8573 | ||
8574 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8575 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8576 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8577 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8578 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8579 | }; |
8580 | #endif | |
8581 | ||
ec011fe8 | 8582 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8583 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8584 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8585 | }; |
8586 | ||
8587 | #if defined(CONFIG_NFS_V4_1) | |
8588 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8589 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8590 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8591 | }; |
8592 | #endif /* CONFIG_NFS_V4_1 */ | |
8593 | ||
97dc1359 TM |
8594 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8595 | .minor_version = 0, | |
39c6daae TM |
8596 | .init_caps = NFS_CAP_READDIRPLUS |
8597 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8598 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8599 | .init_client = nfs40_init_client, |
8600 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8601 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8602 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8603 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8604 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8605 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8606 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8607 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8608 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8609 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8610 | }; |
8611 | ||
8612 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8613 | static struct nfs_seqid * |
8614 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8615 | { | |
8616 | return NULL; | |
8617 | } | |
8618 | ||
97dc1359 TM |
8619 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8620 | .minor_version = 1, | |
39c6daae TM |
8621 | .init_caps = NFS_CAP_READDIRPLUS |
8622 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8623 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8624 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8625 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8626 | .init_client = nfs41_init_client, |
8627 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8628 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8629 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8630 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8631 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8632 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8633 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8634 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8635 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8636 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8637 | }; |
8638 | #endif | |
8639 | ||
42c2c424 SD |
8640 | #if defined(CONFIG_NFS_V4_2) |
8641 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8642 | .minor_version = 2, | |
7017310a BS |
8643 | .init_caps = NFS_CAP_READDIRPLUS |
8644 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8645 | | NFS_CAP_POSIX_LOCK |
8646 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8647 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8648 | | NFS_CAP_ALLOCATE |
624bd5b7 | 8649 | | NFS_CAP_DEALLOCATE |
6c5a0d89 TM |
8650 | | NFS_CAP_SEEK |
8651 | | NFS_CAP_LAYOUTSTATS, | |
abf79bb3 CL |
8652 | .init_client = nfs41_init_client, |
8653 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8654 | .match_stateid = nfs41_match_stateid, |
8655 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8656 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8657 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8658 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8659 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8660 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8661 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8662 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8663 | }; |
8664 | #endif | |
8665 | ||
97dc1359 TM |
8666 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8667 | [0] = &nfs_v4_0_minor_ops, | |
8668 | #if defined(CONFIG_NFS_V4_1) | |
8669 | [1] = &nfs_v4_1_minor_ops, | |
8670 | #endif | |
42c2c424 SD |
8671 | #if defined(CONFIG_NFS_V4_2) |
8672 | [2] = &nfs_v4_2_minor_ops, | |
8673 | #endif | |
97dc1359 TM |
8674 | }; |
8675 | ||
17f26b12 | 8676 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8677 | .create = nfs_create, |
8678 | .lookup = nfs_lookup, | |
8679 | .atomic_open = nfs_atomic_open, | |
8680 | .link = nfs_link, | |
8681 | .unlink = nfs_unlink, | |
8682 | .symlink = nfs_symlink, | |
8683 | .mkdir = nfs_mkdir, | |
8684 | .rmdir = nfs_rmdir, | |
8685 | .mknod = nfs_mknod, | |
8686 | .rename = nfs_rename, | |
8687 | .permission = nfs_permission, | |
8688 | .getattr = nfs_getattr, | |
8689 | .setattr = nfs_setattr, | |
8690 | .getxattr = generic_getxattr, | |
8691 | .setxattr = generic_setxattr, | |
8692 | .listxattr = generic_listxattr, | |
8693 | .removexattr = generic_removexattr, | |
8694 | }; | |
8695 | ||
92e1d5be | 8696 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8697 | .permission = nfs_permission, |
8698 | .getattr = nfs_getattr, | |
8699 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8700 | .getxattr = generic_getxattr, |
8701 | .setxattr = generic_setxattr, | |
8702 | .listxattr = generic_listxattr, | |
8703 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8704 | }; |
8705 | ||
509de811 | 8706 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8707 | .version = 4, /* protocol version */ |
8708 | .dentry_ops = &nfs4_dentry_operations, | |
8709 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8710 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8711 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8712 | .getroot = nfs4_proc_get_root, |
281cad46 | 8713 | .submount = nfs4_submount, |
ff9099f2 | 8714 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8715 | .getattr = nfs4_proc_getattr, |
8716 | .setattr = nfs4_proc_setattr, | |
8717 | .lookup = nfs4_proc_lookup, | |
8718 | .access = nfs4_proc_access, | |
8719 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8720 | .create = nfs4_proc_create, |
8721 | .remove = nfs4_proc_remove, | |
8722 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8723 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8724 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8725 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8726 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8727 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8728 | .link = nfs4_proc_link, |
8729 | .symlink = nfs4_proc_symlink, | |
8730 | .mkdir = nfs4_proc_mkdir, | |
8731 | .rmdir = nfs4_proc_remove, | |
8732 | .readdir = nfs4_proc_readdir, | |
8733 | .mknod = nfs4_proc_mknod, | |
8734 | .statfs = nfs4_proc_statfs, | |
8735 | .fsinfo = nfs4_proc_fsinfo, | |
8736 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8737 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8738 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8739 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8740 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8741 | .read_done = nfs4_read_done, |
1da177e4 | 8742 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8743 | .write_done = nfs4_write_done, |
1da177e4 | 8744 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8745 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8746 | .commit_done = nfs4_commit_done, |
1da177e4 | 8747 | .lock = nfs4_proc_lock, |
e50a1c2e | 8748 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8749 | .close_context = nfs4_close_context, |
2b484297 | 8750 | .open_context = nfs4_atomic_open, |
011e2a7f | 8751 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8752 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8753 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8754 | .init_client = nfs4_init_client, |
cdb7eced | 8755 | .free_client = nfs4_free_client, |
1179acc6 BS |
8756 | .create_server = nfs4_create_server, |
8757 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8758 | }; |
8759 | ||
64c2ce8b AK |
8760 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8761 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8762 | .list = nfs4_xattr_list_nfs4_acl, | |
8763 | .get = nfs4_xattr_get_nfs4_acl, | |
8764 | .set = nfs4_xattr_set_nfs4_acl, | |
8765 | }; | |
8766 | ||
8767 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8768 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8769 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8770 | &nfs4_xattr_nfs4_label_handler, | |
8771 | #endif | |
64c2ce8b AK |
8772 | NULL |
8773 | }; | |
8774 | ||
1da177e4 LT |
8775 | /* |
8776 | * Local variables: | |
8777 | * c-basic-offset: 8 | |
8778 | * End: | |
8779 | */ |