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