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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
8478eaa1 | 81 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, long *); |
81934ddb | 82 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
83 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
84 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
85 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
86 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
87 | struct nfs4_state *state, struct nfs4_label *ilabel, |
88 | struct nfs4_label *olabel); | |
f062eb6c | 89 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
90 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
91 | struct rpc_cred *); | |
92 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
93 | struct rpc_cred *); | |
f062eb6c | 94 | #endif |
aa9c2669 DQ |
95 | |
96 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
97 | static inline struct nfs4_label * | |
98 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
99 | struct iattr *sattr, struct nfs4_label *label) | |
100 | { | |
101 | int err; | |
102 | ||
103 | if (label == NULL) | |
104 | return NULL; | |
105 | ||
106 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
107 | return NULL; | |
108 | ||
aa9c2669 DQ |
109 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
110 | &dentry->d_name, (void **)&label->label, &label->len); | |
111 | if (err == 0) | |
112 | return label; | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | static inline void | |
117 | nfs4_label_release_security(struct nfs4_label *label) | |
118 | { | |
119 | if (label) | |
120 | security_release_secctx(label->label, label->len); | |
121 | } | |
122 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
123 | { | |
124 | if (label) | |
125 | return server->attr_bitmask; | |
126 | ||
127 | return server->attr_bitmask_nl; | |
128 | } | |
129 | #else | |
130 | static inline struct nfs4_label * | |
131 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
132 | struct iattr *sattr, struct nfs4_label *l) | |
133 | { return NULL; } | |
134 | static inline void | |
135 | nfs4_label_release_security(struct nfs4_label *label) | |
136 | { return; } | |
137 | static inline u32 * | |
138 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
139 | { return server->attr_bitmask; } | |
140 | #endif | |
141 | ||
1da177e4 | 142 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 143 | static int nfs4_map_errors(int err) |
1da177e4 | 144 | { |
52567b03 TM |
145 | if (err >= -1000) |
146 | return err; | |
147 | switch (err) { | |
148 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
149 | case -NFS4ERR_LAYOUTTRYLATER: |
150 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 151 | return -EREMOTEIO; |
7ebb9315 | 152 | case -NFS4ERR_WRONGSEC: |
8897538e | 153 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 154 | return -EPERM; |
3ddeb7c5 TM |
155 | case -NFS4ERR_BADOWNER: |
156 | case -NFS4ERR_BADNAME: | |
157 | return -EINVAL; | |
fb13bfa7 TM |
158 | case -NFS4ERR_SHARE_DENIED: |
159 | return -EACCES; | |
f25efd85 SD |
160 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
161 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
162 | case -NFS4ERR_FILE_OPEN: |
163 | return -EBUSY; | |
52567b03 | 164 | default: |
1da177e4 | 165 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 166 | __func__, -err); |
52567b03 | 167 | break; |
1da177e4 | 168 | } |
52567b03 | 169 | return -EIO; |
1da177e4 LT |
170 | } |
171 | ||
172 | /* | |
173 | * This is our standard bitmap for GETATTR requests. | |
174 | */ | |
1549210f | 175 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
176 | FATTR4_WORD0_TYPE |
177 | | FATTR4_WORD0_CHANGE | |
178 | | FATTR4_WORD0_SIZE | |
179 | | FATTR4_WORD0_FSID | |
180 | | FATTR4_WORD0_FILEID, | |
181 | FATTR4_WORD1_MODE | |
182 | | FATTR4_WORD1_NUMLINKS | |
183 | | FATTR4_WORD1_OWNER | |
184 | | FATTR4_WORD1_OWNER_GROUP | |
185 | | FATTR4_WORD1_RAWDEV | |
186 | | FATTR4_WORD1_SPACE_USED | |
187 | | FATTR4_WORD1_TIME_ACCESS | |
188 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
189 | | FATTR4_WORD1_TIME_MODIFY |
190 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
191 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
192 | FATTR4_WORD2_SECURITY_LABEL | |
193 | #endif | |
1da177e4 LT |
194 | }; |
195 | ||
1549210f TM |
196 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
197 | FATTR4_WORD0_TYPE | |
198 | | FATTR4_WORD0_CHANGE | |
199 | | FATTR4_WORD0_SIZE | |
200 | | FATTR4_WORD0_FSID | |
201 | | FATTR4_WORD0_FILEID, | |
202 | FATTR4_WORD1_MODE | |
203 | | FATTR4_WORD1_NUMLINKS | |
204 | | FATTR4_WORD1_OWNER | |
205 | | FATTR4_WORD1_OWNER_GROUP | |
206 | | FATTR4_WORD1_RAWDEV | |
207 | | FATTR4_WORD1_SPACE_USED | |
208 | | FATTR4_WORD1_TIME_ACCESS | |
209 | | FATTR4_WORD1_TIME_METADATA | |
210 | | FATTR4_WORD1_TIME_MODIFY, | |
211 | FATTR4_WORD2_MDSTHRESHOLD | |
212 | }; | |
213 | ||
e23008ec AA |
214 | static const u32 nfs4_open_noattr_bitmap[3] = { |
215 | FATTR4_WORD0_TYPE | |
216 | | FATTR4_WORD0_CHANGE | |
217 | | FATTR4_WORD0_FILEID, | |
218 | }; | |
219 | ||
a09df2ca | 220 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
221 | FATTR4_WORD0_FILES_AVAIL |
222 | | FATTR4_WORD0_FILES_FREE | |
223 | | FATTR4_WORD0_FILES_TOTAL, | |
224 | FATTR4_WORD1_SPACE_AVAIL | |
225 | | FATTR4_WORD1_SPACE_FREE | |
226 | | FATTR4_WORD1_SPACE_TOTAL | |
227 | }; | |
228 | ||
a09df2ca | 229 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
230 | FATTR4_WORD0_MAXLINK |
231 | | FATTR4_WORD0_MAXNAME, | |
232 | 0 | |
233 | }; | |
234 | ||
dae100c2 | 235 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
236 | | FATTR4_WORD0_MAXREAD |
237 | | FATTR4_WORD0_MAXWRITE | |
238 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 239 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
240 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
241 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
242 | }; |
243 | ||
a09df2ca | 244 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
245 | FATTR4_WORD0_TYPE |
246 | | FATTR4_WORD0_CHANGE | |
247 | | FATTR4_WORD0_SIZE | |
248 | | FATTR4_WORD0_FSID | |
249 | | FATTR4_WORD0_FILEID | |
250 | | FATTR4_WORD0_FS_LOCATIONS, | |
251 | FATTR4_WORD1_MODE | |
252 | | FATTR4_WORD1_NUMLINKS | |
253 | | FATTR4_WORD1_OWNER | |
254 | | FATTR4_WORD1_OWNER_GROUP | |
255 | | FATTR4_WORD1_RAWDEV | |
256 | | FATTR4_WORD1_SPACE_USED | |
257 | | FATTR4_WORD1_TIME_ACCESS | |
258 | | FATTR4_WORD1_TIME_METADATA | |
259 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 260 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
261 | }; |
262 | ||
bc4785cd | 263 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
264 | struct nfs4_readdir_arg *readdir) |
265 | { | |
0dbb4c67 | 266 | __be32 *start, *p; |
1da177e4 | 267 | |
1da177e4 | 268 | if (cookie > 2) { |
b7ef1956 | 269 | readdir->cookie = cookie; |
1da177e4 LT |
270 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
271 | return; | |
272 | } | |
273 | ||
274 | readdir->cookie = 0; | |
275 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
276 | if (cookie == 2) | |
277 | return; | |
278 | ||
279 | /* | |
280 | * NFSv4 servers do not return entries for '.' and '..' | |
281 | * Therefore, we fake these entries here. We let '.' | |
282 | * have cookie 0 and '..' have cookie 1. Note that | |
283 | * when talking to the server, we always send cookie 0 | |
284 | * instead of 1 or 2. | |
285 | */ | |
2b86ce2d | 286 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
287 | |
288 | if (cookie == 0) { | |
289 | *p++ = xdr_one; /* next */ | |
290 | *p++ = xdr_zero; /* cookie, first word */ | |
291 | *p++ = xdr_one; /* cookie, second word */ | |
292 | *p++ = xdr_one; /* entry len */ | |
293 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
294 | p++; | |
295 | *p++ = xdr_one; /* bitmap length */ | |
296 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
297 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 298 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
1da177e4 LT |
299 | } |
300 | ||
301 | *p++ = xdr_one; /* next */ | |
302 | *p++ = xdr_zero; /* cookie, first word */ | |
303 | *p++ = xdr_two; /* cookie, second word */ | |
304 | *p++ = xdr_two; /* entry len */ | |
305 | memcpy(p, "..\0\0", 4); /* entry */ | |
306 | p++; | |
307 | *p++ = xdr_one; /* bitmap length */ | |
308 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
309 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 310 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
311 | |
312 | readdir->pgbase = (char *)p - (char *)start; | |
313 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 314 | kunmap_atomic(start); |
1da177e4 LT |
315 | } |
316 | ||
8478eaa1 N |
317 | static long nfs4_update_delay(long *timeout) |
318 | { | |
319 | long ret; | |
320 | if (!timeout) | |
321 | return NFS4_POLL_RETRY_MAX; | |
322 | if (*timeout <= 0) | |
323 | *timeout = NFS4_POLL_RETRY_MIN; | |
324 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
325 | *timeout = NFS4_POLL_RETRY_MAX; | |
326 | ret = *timeout; | |
327 | *timeout <<= 1; | |
328 | return ret; | |
329 | } | |
330 | ||
65de872e TM |
331 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
332 | { | |
333 | int res = 0; | |
334 | ||
335 | might_sleep(); | |
336 | ||
8478eaa1 N |
337 | freezable_schedule_timeout_killable_unsafe( |
338 | nfs4_update_delay(timeout)); | |
65de872e TM |
339 | if (fatal_signal_pending(current)) |
340 | res = -ERESTARTSYS; | |
65de872e TM |
341 | return res; |
342 | } | |
343 | ||
344 | /* This is the error handling routine for processes that are allowed | |
345 | * to sleep. | |
346 | */ | |
f4ac1674 | 347 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
348 | { |
349 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 350 | struct nfs4_state *state = exception->state; |
3114ea7a | 351 | struct inode *inode = exception->inode; |
65de872e TM |
352 | int ret = errorcode; |
353 | ||
354 | exception->retry = 0; | |
355 | switch(errorcode) { | |
356 | case 0: | |
357 | return 0; | |
3114ea7a | 358 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
359 | case -NFS4ERR_DELEG_REVOKED: |
360 | case -NFS4ERR_ADMIN_REVOKED: | |
361 | case -NFS4ERR_BAD_STATEID: | |
011e2a7f | 362 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 363 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
364 | exception->retry = 1; |
365 | return 0; | |
366 | } | |
367 | if (state == NULL) | |
368 | break; | |
5d422301 TM |
369 | ret = nfs4_schedule_stateid_recovery(server, state); |
370 | if (ret < 0) | |
371 | break; | |
3114ea7a | 372 | goto wait_on_recovery; |
0ced63d1 | 373 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
374 | if (state != NULL) { |
375 | ret = nfs4_schedule_stateid_recovery(server, state); | |
376 | if (ret < 0) | |
377 | break; | |
378 | } | |
65de872e | 379 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 380 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
381 | nfs4_schedule_lease_recovery(clp); |
382 | goto wait_on_recovery; | |
519ae255 CL |
383 | case -NFS4ERR_MOVED: |
384 | ret = nfs4_schedule_migration_recovery(server); | |
385 | if (ret < 0) | |
386 | break; | |
387 | goto wait_on_recovery; | |
8ef2f8d4 CL |
388 | case -NFS4ERR_LEASE_MOVED: |
389 | nfs4_schedule_lease_moved_recovery(clp); | |
390 | goto wait_on_recovery; | |
03391693 | 391 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
392 | case -NFS4ERR_BADSESSION: |
393 | case -NFS4ERR_BADSLOT: | |
394 | case -NFS4ERR_BAD_HIGH_SLOT: | |
395 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
396 | case -NFS4ERR_DEADSESSION: | |
397 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
398 | case -NFS4ERR_SEQ_MISORDERED: | |
399 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
400 | errorcode); | |
9f594791 | 401 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 402 | goto wait_on_recovery; |
03391693 | 403 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 404 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
405 | if (exception->timeout > HZ) { |
406 | /* We have retried a decent amount, time to | |
407 | * fail | |
408 | */ | |
409 | ret = -EBUSY; | |
410 | break; | |
411 | } | |
65de872e TM |
412 | case -NFS4ERR_GRACE: |
413 | case -NFS4ERR_DELAY: | |
414 | ret = nfs4_delay(server->client, &exception->timeout); | |
415 | if (ret != 0) | |
416 | break; | |
a8a4ae3a | 417 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
418 | case -NFS4ERR_OLD_STATEID: |
419 | exception->retry = 1; | |
b064eca2 TM |
420 | break; |
421 | case -NFS4ERR_BADOWNER: | |
422 | /* The following works around a Linux server bug! */ | |
423 | case -NFS4ERR_BADNAME: | |
424 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
425 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
426 | exception->retry = 1; | |
427 | printk(KERN_WARNING "NFS: v4 server %s " | |
428 | "does not accept raw " | |
429 | "uid/gids. " | |
430 | "Reenabling the idmapper.\n", | |
431 | server->nfs_client->cl_hostname); | |
432 | } | |
65de872e TM |
433 | } |
434 | /* We failed to handle the error */ | |
435 | return nfs4_map_errors(ret); | |
0400a6b0 | 436 | wait_on_recovery: |
a2c0b9e2 | 437 | ret = nfs4_wait_clnt_recover(clp); |
519ae255 CL |
438 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
439 | return -EIO; | |
a2c0b9e2 TM |
440 | if (ret == 0) |
441 | exception->retry = 1; | |
442 | return ret; | |
65de872e TM |
443 | } |
444 | ||
a5250def WAA |
445 | /* |
446 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
447 | * or 'false' otherwise. | |
448 | */ | |
449 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
450 | { | |
451 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
452 | ||
453 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
454 | flavor == RPC_AUTH_GSS_KRB5P) | |
455 | return true; | |
456 | ||
457 | return false; | |
458 | } | |
65de872e | 459 | |
452e9352 | 460 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 461 | { |
1da177e4 LT |
462 | spin_lock(&clp->cl_lock); |
463 | if (time_before(clp->cl_last_renewal,timestamp)) | |
464 | clp->cl_last_renewal = timestamp; | |
465 | spin_unlock(&clp->cl_lock); | |
466 | } | |
467 | ||
452e9352 TM |
468 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
469 | { | |
be824167 TM |
470 | struct nfs_client *clp = server->nfs_client; |
471 | ||
472 | if (!nfs4_has_session(clp)) | |
473 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
474 | } |
475 | ||
2a3eb2b9 CL |
476 | struct nfs4_call_sync_data { |
477 | const struct nfs_server *seq_server; | |
478 | struct nfs4_sequence_args *seq_args; | |
479 | struct nfs4_sequence_res *seq_res; | |
480 | }; | |
481 | ||
be3a5d23 TM |
482 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
483 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
484 | { |
485 | args->sa_slot = NULL; | |
486 | args->sa_cache_this = cache_reply; | |
487 | args->sa_privileged = 0; | |
488 | ||
489 | res->sr_slot = NULL; | |
490 | } | |
491 | ||
492 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
493 | { | |
494 | args->sa_privileged = 1; | |
495 | } | |
496 | ||
cb04ad2a PT |
497 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
498 | struct nfs4_sequence_args *args, | |
499 | struct nfs4_sequence_res *res, | |
500 | struct rpc_task *task) | |
3bd2384a | 501 | { |
3bd2384a CL |
502 | struct nfs4_slot *slot; |
503 | ||
504 | /* slot already allocated? */ | |
505 | if (res->sr_slot != NULL) | |
506 | goto out_start; | |
507 | ||
508 | spin_lock(&tbl->slot_tbl_lock); | |
509 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
510 | goto out_sleep; | |
511 | ||
512 | slot = nfs4_alloc_slot(tbl); | |
513 | if (IS_ERR(slot)) { | |
514 | if (slot == ERR_PTR(-ENOMEM)) | |
515 | task->tk_timeout = HZ >> 2; | |
516 | goto out_sleep; | |
517 | } | |
518 | spin_unlock(&tbl->slot_tbl_lock); | |
519 | ||
520 | args->sa_slot = slot; | |
521 | res->sr_slot = slot; | |
522 | ||
523 | out_start: | |
524 | rpc_call_start(task); | |
525 | return 0; | |
526 | ||
527 | out_sleep: | |
528 | if (args->sa_privileged) | |
529 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
530 | NULL, RPC_PRIORITY_PRIVILEGED); | |
531 | else | |
532 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
533 | spin_unlock(&tbl->slot_tbl_lock); | |
534 | return -EAGAIN; | |
535 | } | |
cb04ad2a | 536 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
537 | |
538 | static int nfs40_sequence_done(struct rpc_task *task, | |
539 | struct nfs4_sequence_res *res) | |
540 | { | |
541 | struct nfs4_slot *slot = res->sr_slot; | |
542 | struct nfs4_slot_table *tbl; | |
543 | ||
cab92c19 | 544 | if (slot == NULL) |
3bd2384a CL |
545 | goto out; |
546 | ||
547 | tbl = slot->table; | |
548 | spin_lock(&tbl->slot_tbl_lock); | |
549 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
550 | nfs4_free_slot(tbl, slot); | |
551 | spin_unlock(&tbl->slot_tbl_lock); | |
552 | ||
553 | res->sr_slot = NULL; | |
554 | out: | |
555 | return 1; | |
556 | } | |
557 | ||
cccef3b9 AA |
558 | #if defined(CONFIG_NFS_V4_1) |
559 | ||
d185a334 | 560 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 561 | { |
e3725ec0 | 562 | struct nfs4_session *session; |
13615871 | 563 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 564 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 565 | bool send_new_highest_used_slotid = false; |
13615871 | 566 | |
a13ce7c6 | 567 | tbl = slot->table; |
e3725ec0 | 568 | session = tbl->session; |
ea028ac9 | 569 | |
35dc1d74 | 570 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
571 | /* Be nice to the server: try to ensure that the last transmitted |
572 | * value for highest_user_slotid <= target_highest_slotid | |
573 | */ | |
574 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
575 | send_new_highest_used_slotid = true; | |
576 | ||
a13ce7c6 | 577 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
578 | send_new_highest_used_slotid = false; |
579 | goto out_unlock; | |
580 | } | |
a13ce7c6 | 581 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
582 | |
583 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
584 | send_new_highest_used_slotid = false; | |
b75ad4cd | 585 | out_unlock: |
35dc1d74 | 586 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 587 | res->sr_slot = NULL; |
c10e4498 | 588 | if (send_new_highest_used_slotid) |
3f10a6af | 589 | nfs41_notify_server(session->clp); |
13615871 AA |
590 | } |
591 | ||
f9c96fcc | 592 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 593 | { |
e3725ec0 | 594 | struct nfs4_session *session; |
a13ce7c6 | 595 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 596 | struct nfs_client *clp; |
ac20d163 | 597 | bool interrupted = false; |
85563073 | 598 | int ret = 1; |
b0df806c | 599 | |
a13ce7c6 TM |
600 | if (slot == NULL) |
601 | goto out_noaction; | |
468f8613 BS |
602 | /* don't increment the sequence number if the task wasn't sent */ |
603 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
604 | goto out; |
605 | ||
e3725ec0 | 606 | session = slot->table->session; |
933602e3 | 607 | |
ac20d163 TM |
608 | if (slot->interrupted) { |
609 | slot->interrupted = 0; | |
610 | interrupted = true; | |
611 | } | |
612 | ||
2f92ae34 | 613 | trace_nfs4_sequence_done(session, res); |
691daf3b | 614 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
615 | switch (res->sr_status) { |
616 | case 0: | |
b0df806c | 617 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 618 | ++slot->seq_nr; |
e3725ec0 | 619 | clp = session->clp; |
8e63b6a8 | 620 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 621 | /* Check sequence flags */ |
b15c7cdd | 622 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 623 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 624 | break; |
ac20d163 TM |
625 | case 1: |
626 | /* | |
627 | * sr_status remains 1 if an RPC level error occurred. | |
628 | * The server may or may not have processed the sequence | |
629 | * operation.. | |
630 | * Mark the slot as having hosted an interrupted RPC call. | |
631 | */ | |
632 | slot->interrupted = 1; | |
633 | goto out; | |
14516c3a TM |
634 | case -NFS4ERR_DELAY: |
635 | /* The server detected a resend of the RPC call and | |
636 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
637 | * of RFC5661. | |
638 | */ | |
df2fabff | 639 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 640 | __func__, |
df2fabff | 641 | slot->slot_nr, |
933602e3 | 642 | slot->seq_nr); |
14516c3a | 643 | goto out_retry; |
85563073 TM |
644 | case -NFS4ERR_BADSLOT: |
645 | /* | |
646 | * The slot id we used was probably retired. Try again | |
647 | * using a different slot id. | |
648 | */ | |
e8794440 TM |
649 | goto retry_nowait; |
650 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
651 | /* |
652 | * Was the last operation on this sequence interrupted? | |
653 | * If so, retry after bumping the sequence number. | |
654 | */ | |
655 | if (interrupted) { | |
656 | ++slot->seq_nr; | |
657 | goto retry_nowait; | |
658 | } | |
e8794440 TM |
659 | /* |
660 | * Could this slot have been previously retired? | |
661 | * If so, then the server may be expecting seq_nr = 1! | |
662 | */ | |
8e63b6a8 TM |
663 | if (slot->seq_nr != 1) { |
664 | slot->seq_nr = 1; | |
665 | goto retry_nowait; | |
666 | } | |
667 | break; | |
e8794440 TM |
668 | case -NFS4ERR_SEQ_FALSE_RETRY: |
669 | ++slot->seq_nr; | |
670 | goto retry_nowait; | |
14516c3a TM |
671 | default: |
672 | /* Just update the slot sequence no. */ | |
933602e3 | 673 | ++slot->seq_nr; |
b0df806c AA |
674 | } |
675 | out: | |
676 | /* The session may be reset by one of the error handlers. */ | |
677 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 678 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 679 | out_noaction: |
85563073 | 680 | return ret; |
e8794440 TM |
681 | retry_nowait: |
682 | if (rpc_restart_call_prepare(task)) { | |
683 | task->tk_status = 0; | |
684 | ret = 0; | |
685 | } | |
686 | goto out; | |
14516c3a | 687 | out_retry: |
d05dd4e9 | 688 | if (!rpc_restart_call(task)) |
14516c3a TM |
689 | goto out; |
690 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
691 | return 0; | |
b0df806c | 692 | } |
f9c96fcc | 693 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 694 | |
2c4b131d | 695 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 696 | { |
e3725ec0 | 697 | if (res->sr_slot == NULL) |
14516c3a | 698 | return 1; |
3bd2384a CL |
699 | if (!res->sr_slot->table->session) |
700 | return nfs40_sequence_done(task, res); | |
14516c3a | 701 | return nfs41_sequence_done(task, res); |
df896455 | 702 | } |
2c4b131d | 703 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 704 | |
dc70d7b3 | 705 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
706 | struct nfs4_sequence_args *args, |
707 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
708 | struct rpc_task *task) |
709 | { | |
fbcd4abc AA |
710 | struct nfs4_slot *slot; |
711 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
712 | |
713 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 714 | /* slot already allocated? */ |
dfb4f309 | 715 | if (res->sr_slot != NULL) |
d9afbd1b | 716 | goto out_success; |
ce5039c1 | 717 | |
fbcd4abc AA |
718 | tbl = &session->fc_slot_table; |
719 | ||
69d206b5 TM |
720 | task->tk_timeout = 0; |
721 | ||
fbcd4abc | 722 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 723 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 724 | !args->sa_privileged) { |
0b1c8fc4 | 725 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 726 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 727 | goto out_sleep; |
689cf5c1 AB |
728 | } |
729 | ||
2dc03b7f | 730 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
731 | if (IS_ERR(slot)) { |
732 | /* If out of memory, try again in 1/4 second */ | |
733 | if (slot == ERR_PTR(-ENOMEM)) | |
734 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 735 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 736 | goto out_sleep; |
fbcd4abc AA |
737 | } |
738 | spin_unlock(&tbl->slot_tbl_lock); | |
739 | ||
2b2fa717 | 740 | args->sa_slot = slot; |
fbcd4abc | 741 | |
e8d92382 | 742 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 743 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 744 | |
dfb4f309 | 745 | res->sr_slot = slot; |
8e63b6a8 | 746 | res->sr_timestamp = jiffies; |
2a6e26cd | 747 | res->sr_status_flags = 0; |
fbcd4abc AA |
748 | /* |
749 | * sr_status is only set in decode_sequence, and so will remain | |
750 | * set to 1 if an rpc level failure occurs. | |
751 | */ | |
752 | res->sr_status = 1; | |
2f92ae34 | 753 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
754 | out_success: |
755 | rpc_call_start(task); | |
ce5039c1 | 756 | return 0; |
7b939a3f | 757 | out_sleep: |
8fe72bac TM |
758 | /* Privileged tasks are queued with top priority */ |
759 | if (args->sa_privileged) | |
1e1093c7 TM |
760 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
761 | NULL, RPC_PRIORITY_PRIVILEGED); | |
762 | else | |
763 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
764 | spin_unlock(&tbl->slot_tbl_lock); |
765 | return -EAGAIN; | |
ce5039c1 | 766 | } |
dc70d7b3 | 767 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 768 | |
5a580e0a CL |
769 | static int nfs4_setup_sequence(const struct nfs_server *server, |
770 | struct nfs4_sequence_args *args, | |
771 | struct nfs4_sequence_res *res, | |
772 | struct rpc_task *task) | |
ce5039c1 | 773 | { |
035168ab | 774 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
775 | int ret = 0; |
776 | ||
3bd2384a | 777 | if (!session) |
cb04ad2a PT |
778 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
779 | args, res, task); | |
035168ab | 780 | |
e8d92382 | 781 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 782 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 783 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 784 | |
9d12b216 | 785 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 786 | |
ce5039c1 AA |
787 | dprintk("<-- %s status=%d\n", __func__, ret); |
788 | return ret; | |
789 | } | |
790 | ||
ce5039c1 AA |
791 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
792 | { | |
2a3eb2b9 | 793 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 794 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 795 | |
035168ab TM |
796 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
797 | ||
d9afbd1b | 798 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
799 | } |
800 | ||
69ab40c4 AA |
801 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
802 | { | |
2a3eb2b9 | 803 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 804 | |
14516c3a | 805 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
806 | } |
807 | ||
17280175 | 808 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 809 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 810 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
811 | }; |
812 | ||
3bd2384a CL |
813 | #else /* !CONFIG_NFS_V4_1 */ |
814 | ||
9915ea7e CL |
815 | static int nfs4_setup_sequence(const struct nfs_server *server, |
816 | struct nfs4_sequence_args *args, | |
817 | struct nfs4_sequence_res *res, | |
818 | struct rpc_task *task) | |
819 | { | |
cb04ad2a PT |
820 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
821 | args, res, task); | |
9915ea7e CL |
822 | } |
823 | ||
2c4b131d PT |
824 | int nfs4_sequence_done(struct rpc_task *task, |
825 | struct nfs4_sequence_res *res) | |
9915ea7e | 826 | { |
3bd2384a | 827 | return nfs40_sequence_done(task, res); |
9915ea7e | 828 | } |
2c4b131d | 829 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
830 | |
831 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
832 | |
833 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
834 | { | |
835 | struct nfs4_call_sync_data *data = calldata; | |
836 | nfs4_setup_sequence(data->seq_server, | |
837 | data->seq_args, data->seq_res, task); | |
838 | } | |
839 | ||
840 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
841 | { | |
842 | struct nfs4_call_sync_data *data = calldata; | |
843 | nfs4_sequence_done(task, data->seq_res); | |
844 | } | |
845 | ||
846 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
847 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
848 | .rpc_call_done = nfs40_call_sync_done, | |
849 | }; | |
850 | ||
7c513058 BS |
851 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
852 | struct nfs_server *server, | |
ce5039c1 AA |
853 | struct rpc_message *msg, |
854 | struct nfs4_sequence_args *args, | |
8fe72bac | 855 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
856 | { |
857 | int ret; | |
858 | struct rpc_task *task; | |
9915ea7e | 859 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 860 | struct nfs4_call_sync_data data = { |
035168ab | 861 | .seq_server = server, |
ce5039c1 AA |
862 | .seq_args = args, |
863 | .seq_res = res, | |
ce5039c1 AA |
864 | }; |
865 | struct rpc_task_setup task_setup = { | |
7c513058 | 866 | .rpc_client = clnt, |
ce5039c1 | 867 | .rpc_message = msg, |
9915ea7e | 868 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
869 | .callback_data = &data |
870 | }; | |
871 | ||
ce5039c1 AA |
872 | task = rpc_run_task(&task_setup); |
873 | if (IS_ERR(task)) | |
874 | ret = PTR_ERR(task); | |
875 | else { | |
876 | ret = task->tk_status; | |
877 | rpc_put_task(task); | |
878 | } | |
879 | return ret; | |
880 | } | |
881 | ||
7c513058 BS |
882 | int nfs4_call_sync(struct rpc_clnt *clnt, |
883 | struct nfs_server *server, | |
e73b83f2 BS |
884 | struct rpc_message *msg, |
885 | struct nfs4_sequence_args *args, | |
886 | struct nfs4_sequence_res *res, | |
887 | int cache_reply) | |
888 | { | |
a9c92d6b | 889 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 890 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 891 | } |
cccef3b9 | 892 | |
38478b24 | 893 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 894 | { |
38478b24 | 895 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 896 | |
38478b24 | 897 | spin_lock(&dir->i_lock); |
359d7d1c | 898 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 899 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 900 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 901 | dir->i_version = cinfo->after; |
3235b403 | 902 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 903 | nfs_fscache_invalidate(dir); |
38478b24 | 904 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
905 | } |
906 | ||
e56e0b78 | 907 | struct nfs4_opendata { |
c6d00e63 | 908 | struct kref kref; |
e56e0b78 TM |
909 | struct nfs_openargs o_arg; |
910 | struct nfs_openres o_res; | |
cdd4e68b TM |
911 | struct nfs_open_confirmargs c_arg; |
912 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
913 | struct nfs4_string owner_name; |
914 | struct nfs4_string group_name; | |
a49c2691 | 915 | struct nfs4_label *a_label; |
e56e0b78 | 916 | struct nfs_fattr f_attr; |
1775fd3e | 917 | struct nfs4_label *f_label; |
e56e0b78 | 918 | struct dentry *dir; |
82a2c1b7 | 919 | struct dentry *dentry; |
e56e0b78 | 920 | struct nfs4_state_owner *owner; |
aac00a8d | 921 | struct nfs4_state *state; |
e56e0b78 | 922 | struct iattr attrs; |
26e976a8 | 923 | unsigned long timestamp; |
3e309914 | 924 | unsigned int rpc_done : 1; |
5bc2afc2 | 925 | unsigned int file_created : 1; |
bdeca1b7 | 926 | unsigned int is_recover : 1; |
24ac23ab TM |
927 | int rpc_status; |
928 | int cancelled; | |
e56e0b78 TM |
929 | }; |
930 | ||
49f9a0fa TM |
931 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
932 | int err, struct nfs4_exception *exception) | |
933 | { | |
934 | if (err != -EINVAL) | |
935 | return false; | |
936 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
937 | return false; | |
938 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
939 | exception->retry = 1; | |
940 | return true; | |
941 | } | |
942 | ||
6ae37339 TM |
943 | static u32 |
944 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
945 | fmode_t fmode, int openflags) | |
946 | { | |
947 | u32 res = 0; | |
948 | ||
949 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
950 | case FMODE_READ: | |
951 | res = NFS4_SHARE_ACCESS_READ; | |
952 | break; | |
953 | case FMODE_WRITE: | |
954 | res = NFS4_SHARE_ACCESS_WRITE; | |
955 | break; | |
956 | case FMODE_READ|FMODE_WRITE: | |
957 | res = NFS4_SHARE_ACCESS_BOTH; | |
958 | } | |
959 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
960 | goto out; | |
961 | /* Want no delegation if we're using O_DIRECT */ | |
962 | if (openflags & O_DIRECT) | |
963 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
964 | out: | |
965 | return res; | |
966 | } | |
967 | ||
49f9a0fa TM |
968 | static enum open_claim_type4 |
969 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
970 | enum open_claim_type4 claim) | |
971 | { | |
972 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
973 | return claim; | |
974 | switch (claim) { | |
975 | default: | |
976 | return claim; | |
977 | case NFS4_OPEN_CLAIM_FH: | |
978 | return NFS4_OPEN_CLAIM_NULL; | |
979 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
980 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
981 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
982 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
983 | } | |
984 | } | |
2ced46c2 TM |
985 | |
986 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
987 | { | |
988 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 989 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
990 | p->o_res.seqid = p->o_arg.seqid; |
991 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 992 | p->o_res.server = p->o_arg.server; |
5f657530 | 993 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 994 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 995 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
996 | } |
997 | ||
82a2c1b7 | 998 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 999 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1000 | const struct iattr *attrs, |
1775fd3e | 1001 | struct nfs4_label *label, |
4a1c0893 | 1002 | enum open_claim_type4 claim, |
8535b2be | 1003 | gfp_t gfp_mask) |
e56e0b78 | 1004 | { |
82a2c1b7 | 1005 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1006 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1007 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1008 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1009 | struct nfs4_opendata *p; |
1010 | ||
8535b2be | 1011 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1012 | if (p == NULL) |
1013 | goto err; | |
14c43f76 DQ |
1014 | |
1015 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1016 | if (IS_ERR(p->f_label)) | |
1017 | goto err_free_p; | |
1018 | ||
a49c2691 KM |
1019 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1020 | if (IS_ERR(p->a_label)) | |
1021 | goto err_free_f; | |
1022 | ||
63f5f796 TM |
1023 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1024 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1025 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1026 | goto err_free_label; |
82a2c1b7 AV |
1027 | nfs_sb_active(dentry->d_sb); |
1028 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1029 | p->dir = parent; |
1030 | p->owner = sp; | |
1031 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1032 | p->o_arg.open_flags = flags; |
1033 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1034 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1035 | fmode, flags); | |
ae2bb032 WAA |
1036 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1037 | * will return permission denied for all bits until close */ | |
1038 | if (!(flags & O_EXCL)) { | |
1039 | /* ask server to check for all possible rights as results | |
1040 | * are cached */ | |
1041 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1042 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1043 | } |
7539bbab | 1044 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1045 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1046 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1047 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1048 | p->o_arg.server = server; |
aa9c2669 | 1049 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1050 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1051 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1052 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1053 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1054 | case NFS4_OPEN_CLAIM_NULL: |
1055 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1056 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1057 | p->o_arg.fh = NFS_FH(dir); | |
1058 | break; | |
1059 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1060 | case NFS4_OPEN_CLAIM_FH: | |
1061 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1062 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1063 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1064 | } |
536e43d1 | 1065 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1066 | __u32 verf[2]; |
d77d76ff | 1067 | |
e56e0b78 TM |
1068 | p->o_arg.u.attrs = &p->attrs; |
1069 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1070 | |
1071 | verf[0] = jiffies; | |
1072 | verf[1] = current->pid; | |
1073 | memcpy(p->o_arg.u.verifier.data, verf, | |
1074 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1075 | } |
cdd4e68b TM |
1076 | p->c_arg.fh = &p->o_res.fh; |
1077 | p->c_arg.stateid = &p->o_res.stateid; | |
1078 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1079 | nfs4_init_opendata_res(p); |
c6d00e63 | 1080 | kref_init(&p->kref); |
e56e0b78 | 1081 | return p; |
14c43f76 DQ |
1082 | |
1083 | err_free_label: | |
a49c2691 KM |
1084 | nfs4_label_free(p->a_label); |
1085 | err_free_f: | |
14c43f76 DQ |
1086 | nfs4_label_free(p->f_label); |
1087 | err_free_p: | |
e56e0b78 TM |
1088 | kfree(p); |
1089 | err: | |
1090 | dput(parent); | |
1091 | return NULL; | |
1092 | } | |
1093 | ||
c6d00e63 | 1094 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1095 | { |
c6d00e63 TM |
1096 | struct nfs4_opendata *p = container_of(kref, |
1097 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1098 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1099 | |
1100 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1101 | if (p->state != NULL) |
1102 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1103 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1104 | |
a49c2691 | 1105 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1106 | nfs4_label_free(p->f_label); |
1107 | ||
c6d00e63 | 1108 | dput(p->dir); |
82a2c1b7 AV |
1109 | dput(p->dentry); |
1110 | nfs_sb_deactive(sb); | |
6926afd1 | 1111 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1112 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1113 | kfree(p); |
1114 | } | |
1115 | ||
1116 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1117 | { | |
1118 | if (p != NULL) | |
1119 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1120 | } |
1121 | ||
06f814a3 TM |
1122 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1123 | { | |
06f814a3 TM |
1124 | int ret; |
1125 | ||
06f814a3 | 1126 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1127 | return ret; |
1128 | } | |
1129 | ||
dc0b027d | 1130 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1131 | { |
1132 | int ret = 0; | |
dc0b027d | 1133 | |
536e43d1 | 1134 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1135 | goto out; |
1136 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1137 | case FMODE_READ: |
88069f77 TM |
1138 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1139 | && state->n_rdonly != 0; | |
6ee41268 TM |
1140 | break; |
1141 | case FMODE_WRITE: | |
88069f77 TM |
1142 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1143 | && state->n_wronly != 0; | |
6ee41268 TM |
1144 | break; |
1145 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1146 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1147 | && state->n_rdwr != 0; | |
6ee41268 | 1148 | } |
dc0b027d | 1149 | out: |
6ee41268 TM |
1150 | return ret; |
1151 | } | |
1152 | ||
2a606188 TM |
1153 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1154 | enum open_claim_type4 claim) | |
aac00a8d | 1155 | { |
652f89f6 TM |
1156 | if (delegation == NULL) |
1157 | return 0; | |
dc0b027d | 1158 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1159 | return 0; |
d25be546 TM |
1160 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1161 | return 0; | |
2a606188 TM |
1162 | switch (claim) { |
1163 | case NFS4_OPEN_CLAIM_NULL: | |
1164 | case NFS4_OPEN_CLAIM_FH: | |
1165 | break; | |
1166 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1167 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1168 | break; | |
1169 | default: | |
1170 | return 0; | |
1171 | } | |
b7391f44 | 1172 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1173 | return 1; |
1174 | } | |
1175 | ||
dc0b027d | 1176 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1177 | { |
dc0b027d | 1178 | switch (fmode) { |
e7616923 TM |
1179 | case FMODE_WRITE: |
1180 | state->n_wronly++; | |
1181 | break; | |
1182 | case FMODE_READ: | |
1183 | state->n_rdonly++; | |
1184 | break; | |
1185 | case FMODE_READ|FMODE_WRITE: | |
1186 | state->n_rdwr++; | |
1187 | } | |
dc0b027d | 1188 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1189 | } |
1190 | ||
4f14c194 TM |
1191 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1192 | { | |
1193 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1194 | bool need_recover = false; | |
1195 | ||
1196 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1197 | need_recover = true; | |
1198 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1199 | need_recover = true; | |
1200 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1201 | need_recover = true; | |
1202 | if (need_recover) | |
1203 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1204 | } | |
1205 | ||
e999e80e TM |
1206 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1207 | nfs4_stateid *stateid) | |
1208 | { | |
1209 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1210 | return true; | |
4f14c194 TM |
1211 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1212 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1213 | return true; |
4f14c194 | 1214 | } |
e999e80e TM |
1215 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1216 | return true; | |
1217 | return false; | |
1218 | } | |
1219 | ||
f95549cf TM |
1220 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1221 | { | |
3c38cbe2 TM |
1222 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1223 | return; | |
f95549cf TM |
1224 | if (state->n_wronly) |
1225 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1226 | if (state->n_rdonly) | |
1227 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1228 | if (state->n_rdwr) | |
1229 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1230 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1231 | } |
1232 | ||
226056c5 | 1233 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1234 | nfs4_stateid *arg_stateid, |
226056c5 | 1235 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1236 | { |
226056c5 TM |
1237 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1238 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1239 | case FMODE_WRITE: | |
1240 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1241 | break; | |
1242 | case FMODE_READ: | |
1243 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1244 | break; | |
1245 | case 0: | |
1246 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1247 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1248 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1249 | } | |
1250 | if (stateid == NULL) | |
1251 | return; | |
f95549cf | 1252 | /* Handle races with OPEN */ |
4a1e2feb TM |
1253 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1254 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1255 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1256 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1257 | return; |
f95549cf | 1258 | } |
003707c7 | 1259 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1260 | nfs4_stateid_copy(&state->stateid, stateid); |
1261 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1262 | } |
1263 | ||
4a1e2feb TM |
1264 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1265 | nfs4_stateid *arg_stateid, | |
1266 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1267 | { |
1268 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1269 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1270 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1271 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1272 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1273 | } |
1274 | ||
dc0b027d | 1275 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1276 | { |
dc0b027d | 1277 | switch (fmode) { |
003707c7 TM |
1278 | case FMODE_READ: |
1279 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1280 | break; | |
1281 | case FMODE_WRITE: | |
1282 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1283 | break; | |
1284 | case FMODE_READ|FMODE_WRITE: | |
1285 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1286 | } | |
e999e80e TM |
1287 | if (!nfs_need_update_open_stateid(state, stateid)) |
1288 | return; | |
1289 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1290 | nfs4_stateid_copy(&state->stateid, stateid); | |
1291 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1292 | } |
1293 | ||
dc0b027d | 1294 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1295 | { |
8bda4e4c TM |
1296 | /* |
1297 | * Protect the call to nfs4_state_set_mode_locked and | |
1298 | * serialise the stateid update | |
1299 | */ | |
1300 | write_seqlock(&state->seqlock); | |
003707c7 | 1301 | if (deleg_stateid != NULL) { |
f597c537 | 1302 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1303 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1304 | } | |
1305 | if (open_stateid != NULL) | |
dc0b027d | 1306 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1307 | write_sequnlock(&state->seqlock); |
1308 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1309 | update_open_stateflags(state, fmode); |
ec073428 | 1310 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1311 | } |
1312 | ||
dc0b027d | 1313 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1314 | { |
1315 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1316 | struct nfs_delegation *deleg_cur; | |
1317 | int ret = 0; | |
1318 | ||
dc0b027d | 1319 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1320 | |
1321 | rcu_read_lock(); | |
1322 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1323 | if (deleg_cur == NULL) | |
1324 | goto no_delegation; | |
1325 | ||
1326 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1327 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1328 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1329 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1330 | goto no_delegation_unlock; |
1331 | ||
1332 | if (delegation == NULL) | |
1333 | delegation = &deleg_cur->stateid; | |
f597c537 | 1334 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1335 | goto no_delegation_unlock; |
1336 | ||
b7391f44 | 1337 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1338 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1339 | ret = 1; |
1340 | no_delegation_unlock: | |
1341 | spin_unlock(&deleg_cur->lock); | |
1342 | no_delegation: | |
1343 | rcu_read_unlock(); | |
1344 | ||
1345 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1346 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1347 | ret = 1; |
1348 | } | |
4f14c194 TM |
1349 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1350 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1351 | |
1352 | return ret; | |
1353 | } | |
1354 | ||
39071e6f TM |
1355 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1356 | const nfs4_stateid *stateid) | |
1357 | { | |
1358 | struct nfs4_state *state = lsp->ls_state; | |
1359 | bool ret = false; | |
1360 | ||
1361 | spin_lock(&state->state_lock); | |
1362 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1363 | goto out_noupdate; | |
1364 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1365 | goto out_noupdate; | |
1366 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1367 | ret = true; | |
1368 | out_noupdate: | |
1369 | spin_unlock(&state->state_lock); | |
1370 | return ret; | |
1371 | } | |
34310430 | 1372 | |
dc0b027d | 1373 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1374 | { |
1375 | struct nfs_delegation *delegation; | |
1376 | ||
1377 | rcu_read_lock(); | |
1378 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1379 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1380 | rcu_read_unlock(); |
1381 | return; | |
1382 | } | |
1383 | rcu_read_unlock(); | |
57ec14c5 | 1384 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1385 | } |
1386 | ||
6ee41268 | 1387 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1388 | { |
1389 | struct nfs4_state *state = opendata->state; | |
1390 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1391 | struct nfs_delegation *delegation; | |
f448badd | 1392 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1393 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1394 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1395 | nfs4_stateid stateid; |
1396 | int ret = -EAGAIN; | |
1397 | ||
aac00a8d | 1398 | for (;;) { |
61beef75 | 1399 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1400 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1401 | update_open_stateflags(state, fmode); |
6ee41268 | 1402 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1403 | goto out_return_state; |
6ee41268 | 1404 | } |
61beef75 | 1405 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1406 | rcu_read_lock(); |
1407 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1408 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1409 | rcu_read_unlock(); |
aac00a8d | 1410 | break; |
34310430 | 1411 | } |
aac00a8d | 1412 | /* Save the delegation */ |
f597c537 | 1413 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1414 | rcu_read_unlock(); |
fa332941 | 1415 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1416 | if (!opendata->is_recover) { |
1417 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1418 | if (ret != 0) | |
1419 | goto out; | |
1420 | } | |
aac00a8d | 1421 | ret = -EAGAIN; |
34310430 TM |
1422 | |
1423 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1424 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1425 | goto out_return_state; |
aac00a8d | 1426 | } |
aac00a8d TM |
1427 | out: |
1428 | return ERR_PTR(ret); | |
1429 | out_return_state: | |
1430 | atomic_inc(&state->count); | |
1431 | return state; | |
1432 | } | |
1433 | ||
e23008ec AA |
1434 | static void |
1435 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1436 | { | |
1437 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1438 | struct nfs_delegation *delegation; | |
1439 | int delegation_flags = 0; | |
1440 | ||
1441 | rcu_read_lock(); | |
1442 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1443 | if (delegation) | |
1444 | delegation_flags = delegation->flags; | |
1445 | rcu_read_unlock(); | |
1446 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1447 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1448 | "returning a delegation for " | |
1449 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1450 | clp->cl_hostname); | |
1451 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1452 | nfs_inode_set_delegation(state->inode, | |
1453 | data->owner->so_cred, | |
1454 | &data->o_res); | |
1455 | else | |
1456 | nfs_inode_reclaim_delegation(state->inode, | |
1457 | data->owner->so_cred, | |
1458 | &data->o_res); | |
1459 | } | |
1460 | ||
1461 | /* | |
1462 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1463 | * and update the nfs4_state. | |
1464 | */ | |
1465 | static struct nfs4_state * | |
1466 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1467 | { | |
1468 | struct inode *inode = data->state->inode; | |
1469 | struct nfs4_state *state = data->state; | |
1470 | int ret; | |
1471 | ||
d2bfda2e WAA |
1472 | if (!data->rpc_done) { |
1473 | if (data->rpc_status) { | |
1474 | ret = data->rpc_status; | |
1475 | goto err; | |
1476 | } | |
1477 | /* cached opens have already been processed */ | |
1478 | goto update; | |
e23008ec AA |
1479 | } |
1480 | ||
e23008ec AA |
1481 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1482 | if (ret) | |
1483 | goto err; | |
1484 | ||
1485 | if (data->o_res.delegation_type != 0) | |
1486 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1487 | update: |
e23008ec AA |
1488 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1489 | data->o_arg.fmode); | |
d49f042a | 1490 | atomic_inc(&state->count); |
e23008ec AA |
1491 | |
1492 | return state; | |
1493 | err: | |
1494 | return ERR_PTR(ret); | |
1495 | ||
1496 | } | |
1497 | ||
1498 | static struct nfs4_state * | |
1499 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1500 | { |
1501 | struct inode *inode; | |
1502 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1503 | int ret; |
24ac23ab | 1504 | |
aac00a8d | 1505 | if (!data->rpc_done) { |
6ee41268 | 1506 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1507 | goto out; |
1508 | } | |
1509 | ||
1b370bc2 | 1510 | ret = -EAGAIN; |
24ac23ab | 1511 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1512 | goto err; |
1775fd3e | 1513 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1514 | ret = PTR_ERR(inode); |
03f28e3a | 1515 | if (IS_ERR(inode)) |
1b370bc2 TM |
1516 | goto err; |
1517 | ret = -ENOMEM; | |
24ac23ab TM |
1518 | state = nfs4_get_open_state(inode, data->owner); |
1519 | if (state == NULL) | |
1b370bc2 | 1520 | goto err_put_inode; |
e23008ec AA |
1521 | if (data->o_res.delegation_type != 0) |
1522 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1523 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1524 | data->o_arg.fmode); |
24ac23ab | 1525 | iput(inode); |
aac00a8d | 1526 | out: |
7aa262b5 | 1527 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1528 | return state; |
1b370bc2 TM |
1529 | err_put_inode: |
1530 | iput(inode); | |
1531 | err: | |
1532 | return ERR_PTR(ret); | |
24ac23ab TM |
1533 | } |
1534 | ||
e23008ec AA |
1535 | static struct nfs4_state * |
1536 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1537 | { | |
1538 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1539 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1540 | return _nfs4_opendata_to_nfs4_state(data); | |
1541 | } | |
1542 | ||
864472e9 TM |
1543 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1544 | { | |
1545 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1546 | struct nfs_open_context *ctx; | |
1547 | ||
1548 | spin_lock(&state->inode->i_lock); | |
1549 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1550 | if (ctx->state != state) | |
1551 | continue; | |
1552 | get_nfs_open_context(ctx); | |
1553 | spin_unlock(&state->inode->i_lock); | |
1554 | return ctx; | |
1555 | } | |
1556 | spin_unlock(&state->inode->i_lock); | |
1557 | return ERR_PTR(-ENOENT); | |
1558 | } | |
1559 | ||
4a1c0893 TM |
1560 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1561 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1562 | { |
1563 | struct nfs4_opendata *opendata; | |
1564 | ||
4a1c0893 | 1565 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1566 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1567 | if (opendata == NULL) |
1568 | return ERR_PTR(-ENOMEM); | |
1569 | opendata->state = state; | |
1570 | atomic_inc(&state->count); | |
1571 | return opendata; | |
1572 | } | |
1573 | ||
dc0b027d | 1574 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1575 | { |
2ced46c2 | 1576 | struct nfs4_state *newstate; |
864472e9 TM |
1577 | int ret; |
1578 | ||
39f897fd N |
1579 | if ((opendata->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR || |
1580 | opendata->o_arg.claim == NFS4_OPEN_CLAIM_DELEG_CUR_FH) && | |
1581 | (opendata->o_arg.u.delegation_type & fmode) != fmode) | |
1582 | /* This mode can't have been delegated, so we must have | |
1583 | * a valid open_stateid to cover it - not need to reclaim. | |
1584 | */ | |
1585 | return 0; | |
dc0b027d TM |
1586 | opendata->o_arg.open_flags = 0; |
1587 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1588 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1589 | NFS_SB(opendata->dentry->d_sb), | |
1590 | fmode, 0); | |
2ced46c2 TM |
1591 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1592 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1593 | nfs4_init_opendata_res(opendata); | |
b257957e | 1594 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1595 | if (ret != 0) |
1596 | return ret; | |
2ced46c2 | 1597 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1598 | if (IS_ERR(newstate)) |
1599 | return PTR_ERR(newstate); | |
643168c2 | 1600 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1601 | *res = newstate; |
864472e9 TM |
1602 | return 0; |
1603 | } | |
1604 | ||
1605 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1606 | { | |
864472e9 | 1607 | struct nfs4_state *newstate; |
864472e9 TM |
1608 | int ret; |
1609 | ||
4f14c194 TM |
1610 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1611 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1612 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1613 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1614 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1615 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1616 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1617 | smp_rmb(); |
1618 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1619 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1620 | if (ret != 0) |
1621 | return ret; | |
2ced46c2 TM |
1622 | if (newstate != state) |
1623 | return -ESTALE; | |
864472e9 TM |
1624 | } |
1625 | if (state->n_wronly != 0) { | |
2ced46c2 | 1626 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1627 | if (ret != 0) |
1628 | return ret; | |
2ced46c2 TM |
1629 | if (newstate != state) |
1630 | return -ESTALE; | |
864472e9 TM |
1631 | } |
1632 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1633 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1634 | if (ret != 0) |
1635 | return ret; | |
2ced46c2 TM |
1636 | if (newstate != state) |
1637 | return -ESTALE; | |
864472e9 | 1638 | } |
1ac7e2fd TM |
1639 | /* |
1640 | * We may have performed cached opens for all three recoveries. | |
1641 | * Check if we need to update the current stateid. | |
1642 | */ | |
1643 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1644 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1645 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1646 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1647 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1648 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1649 | } |
864472e9 TM |
1650 | return 0; |
1651 | } | |
1652 | ||
1da177e4 LT |
1653 | /* |
1654 | * OPEN_RECLAIM: | |
1655 | * reclaim state on the server after a reboot. | |
1da177e4 | 1656 | */ |
539cd03a | 1657 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1658 | { |
1ac7e2fd | 1659 | struct nfs_delegation *delegation; |
864472e9 | 1660 | struct nfs4_opendata *opendata; |
dc0b027d | 1661 | fmode_t delegation_type = 0; |
1da177e4 LT |
1662 | int status; |
1663 | ||
4a1c0893 TM |
1664 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1665 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1666 | if (IS_ERR(opendata)) |
1667 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1668 | rcu_read_lock(); |
1669 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1670 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1671 | delegation_type = delegation->type; |
1ac7e2fd | 1672 | rcu_read_unlock(); |
864472e9 TM |
1673 | opendata->o_arg.u.delegation_type = delegation_type; |
1674 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1675 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1676 | return status; |
1677 | } | |
1678 | ||
539cd03a | 1679 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1680 | { |
1681 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1682 | struct nfs4_exception exception = { }; | |
1683 | int err; | |
1684 | do { | |
539cd03a | 1685 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1686 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1687 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1688 | continue; | |
168667c4 | 1689 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1690 | break; |
1691 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1692 | } while (exception.retry); |
1693 | return err; | |
1694 | } | |
1695 | ||
864472e9 TM |
1696 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1697 | { | |
1698 | struct nfs_open_context *ctx; | |
1699 | int ret; | |
1700 | ||
1701 | ctx = nfs4_state_find_open_context(state); | |
1702 | if (IS_ERR(ctx)) | |
91876b13 | 1703 | return -EAGAIN; |
539cd03a | 1704 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1705 | put_nfs_open_context(ctx); |
1706 | return ret; | |
1707 | } | |
1708 | ||
db4f2e63 | 1709 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1710 | { |
be76b5b6 TM |
1711 | switch (err) { |
1712 | default: | |
1713 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1714 | "%d.\n", __func__, err); | |
1715 | case 0: | |
1716 | case -ENOENT: | |
8eee52af | 1717 | case -EAGAIN: |
be76b5b6 TM |
1718 | case -ESTALE: |
1719 | break; | |
1720 | case -NFS4ERR_BADSESSION: | |
1721 | case -NFS4ERR_BADSLOT: | |
1722 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1723 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1724 | case -NFS4ERR_DEADSESSION: | |
1725 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1726 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1727 | return -EAGAIN; | |
1728 | case -NFS4ERR_STALE_CLIENTID: | |
1729 | case -NFS4ERR_STALE_STATEID: | |
1730 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1731 | case -NFS4ERR_EXPIRED: | |
1732 | /* Don't recall a delegation if it was lost */ | |
1733 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1734 | return -EAGAIN; | |
352297b9 CL |
1735 | case -NFS4ERR_MOVED: |
1736 | nfs4_schedule_migration_recovery(server); | |
1737 | return -EAGAIN; | |
8ef2f8d4 CL |
1738 | case -NFS4ERR_LEASE_MOVED: |
1739 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1740 | return -EAGAIN; | |
be76b5b6 TM |
1741 | case -NFS4ERR_DELEG_REVOKED: |
1742 | case -NFS4ERR_ADMIN_REVOKED: | |
1743 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1744 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1745 | nfs_inode_find_state_and_recover(state->inode, |
1746 | stateid); | |
1747 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1748 | return -EAGAIN; |
be76b5b6 TM |
1749 | case -NFS4ERR_DELAY: |
1750 | case -NFS4ERR_GRACE: | |
1751 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1752 | ssleep(1); | |
1753 | return -EAGAIN; | |
db4f2e63 TM |
1754 | case -ENOMEM: |
1755 | case -NFS4ERR_DENIED: | |
1756 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1757 | return 0; | |
be76b5b6 | 1758 | } |
1da177e4 LT |
1759 | return err; |
1760 | } | |
1761 | ||
db4f2e63 TM |
1762 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1763 | { | |
1764 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1765 | struct nfs4_opendata *opendata; | |
1766 | int err; | |
1767 | ||
1768 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1769 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1770 | if (IS_ERR(opendata)) | |
1771 | return PTR_ERR(opendata); | |
1772 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1773 | err = nfs4_open_recover(opendata, state); | |
1774 | nfs4_opendata_put(opendata); | |
1775 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1776 | } | |
1777 | ||
be05c860 CL |
1778 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1779 | { | |
1780 | struct nfs4_opendata *data = calldata; | |
1781 | ||
cb04ad2a PT |
1782 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1783 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1784 | } |
1785 | ||
cdd4e68b TM |
1786 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1787 | { | |
1788 | struct nfs4_opendata *data = calldata; | |
1789 | ||
17ead6c8 | 1790 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1791 | |
cdd4e68b | 1792 | data->rpc_status = task->tk_status; |
26e976a8 | 1793 | if (data->rpc_status == 0) { |
f597c537 | 1794 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1795 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1796 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1797 | data->rpc_done = 1; |
26e976a8 | 1798 | } |
cdd4e68b TM |
1799 | } |
1800 | ||
1801 | static void nfs4_open_confirm_release(void *calldata) | |
1802 | { | |
1803 | struct nfs4_opendata *data = calldata; | |
1804 | struct nfs4_state *state = NULL; | |
1805 | ||
1806 | /* If this request hasn't been cancelled, do nothing */ | |
1807 | if (data->cancelled == 0) | |
1808 | goto out_free; | |
1809 | /* In case of error, no cleanup! */ | |
3e309914 | 1810 | if (!data->rpc_done) |
cdd4e68b | 1811 | goto out_free; |
cdd4e68b | 1812 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1813 | if (!IS_ERR(state)) |
643168c2 | 1814 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1815 | out_free: |
c6d00e63 | 1816 | nfs4_opendata_put(data); |
cdd4e68b TM |
1817 | } |
1818 | ||
1819 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1820 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1821 | .rpc_call_done = nfs4_open_confirm_done, |
1822 | .rpc_release = nfs4_open_confirm_release, | |
1823 | }; | |
1824 | ||
1825 | /* | |
1826 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1827 | */ | |
1828 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1829 | { | |
2b0143b5 | 1830 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1831 | struct rpc_task *task; |
5138fde0 TM |
1832 | struct rpc_message msg = { |
1833 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1834 | .rpc_argp = &data->c_arg, | |
1835 | .rpc_resp = &data->c_res, | |
1836 | .rpc_cred = data->owner->so_cred, | |
1837 | }; | |
c970aa85 TM |
1838 | struct rpc_task_setup task_setup_data = { |
1839 | .rpc_client = server->client, | |
5138fde0 | 1840 | .rpc_message = &msg, |
c970aa85 TM |
1841 | .callback_ops = &nfs4_open_confirm_ops, |
1842 | .callback_data = data, | |
101070ca | 1843 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1844 | .flags = RPC_TASK_ASYNC, |
1845 | }; | |
1da177e4 LT |
1846 | int status; |
1847 | ||
17ead6c8 | 1848 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1849 | kref_get(&data->kref); |
3e309914 TM |
1850 | data->rpc_done = 0; |
1851 | data->rpc_status = 0; | |
5138fde0 | 1852 | data->timestamp = jiffies; |
c970aa85 | 1853 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1854 | if (IS_ERR(task)) |
cdd4e68b | 1855 | return PTR_ERR(task); |
cdd4e68b TM |
1856 | status = nfs4_wait_for_completion_rpc_task(task); |
1857 | if (status != 0) { | |
1858 | data->cancelled = 1; | |
1859 | smp_wmb(); | |
1860 | } else | |
1861 | status = data->rpc_status; | |
e6b3c4db | 1862 | rpc_put_task(task); |
1da177e4 LT |
1863 | return status; |
1864 | } | |
1865 | ||
24ac23ab | 1866 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1867 | { |
24ac23ab TM |
1868 | struct nfs4_opendata *data = calldata; |
1869 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1870 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 1871 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 1872 | |
24ac23ab | 1873 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1874 | goto out_wait; |
aac00a8d TM |
1875 | /* |
1876 | * Check if we still need to send an OPEN call, or if we can use | |
1877 | * a delegation instead. | |
1878 | */ | |
1879 | if (data->state != NULL) { | |
1880 | struct nfs_delegation *delegation; | |
1881 | ||
dc0b027d | 1882 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1883 | goto out_no_action; |
aac00a8d TM |
1884 | rcu_read_lock(); |
1885 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 1886 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 1887 | goto unlock_no_action; |
aac00a8d TM |
1888 | rcu_read_unlock(); |
1889 | } | |
95b72eb0 | 1890 | /* Update client id. */ |
549b19cc | 1891 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
1892 | switch (claim) { |
1893 | default: | |
1894 | break; | |
8188df17 TM |
1895 | case NFS4_OPEN_CLAIM_PREVIOUS: |
1896 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1897 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1898 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1899 | case NFS4_OPEN_CLAIM_FH: |
1900 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1901 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1902 | } | |
26e976a8 | 1903 | data->timestamp = jiffies; |
035168ab | 1904 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1905 | &data->o_arg.seq_args, |
2240a9e2 TM |
1906 | &data->o_res.seq_res, |
1907 | task) != 0) | |
1908 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1909 | |
1910 | /* Set the create mode (note dependency on the session type) */ | |
1911 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1912 | if (data->o_arg.open_flags & O_EXCL) { | |
1913 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1914 | if (nfs4_has_persistent_session(clp)) | |
1915 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1916 | else if (clp->cl_mvops->minor_version > 0) | |
1917 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1918 | } | |
6ee41268 | 1919 | return; |
652f89f6 TM |
1920 | unlock_no_action: |
1921 | rcu_read_unlock(); | |
6ee41268 TM |
1922 | out_no_action: |
1923 | task->tk_action = NULL; | |
c8da19b9 | 1924 | out_wait: |
b75ad4cd | 1925 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1926 | } |
1927 | ||
24ac23ab TM |
1928 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1929 | { | |
1930 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1931 | |
24ac23ab | 1932 | data->rpc_status = task->tk_status; |
d898528c | 1933 | |
14516c3a TM |
1934 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1935 | return; | |
d898528c | 1936 | |
24ac23ab | 1937 | if (task->tk_status == 0) { |
807d66d8 TM |
1938 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1939 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1940 | case S_IFREG: |
1941 | break; | |
1942 | case S_IFLNK: | |
24ac23ab | 1943 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1944 | break; |
1945 | case S_IFDIR: | |
24ac23ab | 1946 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1947 | break; |
1948 | default: | |
24ac23ab | 1949 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1950 | } |
6f926b5b | 1951 | } |
26e976a8 | 1952 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1953 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1954 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1955 | } |
3e309914 | 1956 | data->rpc_done = 1; |
24ac23ab | 1957 | } |
6f926b5b | 1958 | |
24ac23ab TM |
1959 | static void nfs4_open_release(void *calldata) |
1960 | { | |
1961 | struct nfs4_opendata *data = calldata; | |
1962 | struct nfs4_state *state = NULL; | |
1963 | ||
1964 | /* If this request hasn't been cancelled, do nothing */ | |
1965 | if (data->cancelled == 0) | |
1966 | goto out_free; | |
1967 | /* In case of error, no cleanup! */ | |
3e309914 | 1968 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1969 | goto out_free; |
1970 | /* In case we need an open_confirm, no cleanup! */ | |
1971 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1972 | goto out_free; | |
24ac23ab | 1973 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1974 | if (!IS_ERR(state)) |
643168c2 | 1975 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1976 | out_free: |
c6d00e63 | 1977 | nfs4_opendata_put(data); |
24ac23ab TM |
1978 | } |
1979 | ||
1980 | static const struct rpc_call_ops nfs4_open_ops = { | |
1981 | .rpc_call_prepare = nfs4_open_prepare, | |
1982 | .rpc_call_done = nfs4_open_done, | |
1983 | .rpc_release = nfs4_open_release, | |
1984 | }; | |
1985 | ||
b257957e | 1986 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 1987 | { |
2b0143b5 | 1988 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
1989 | struct nfs_server *server = NFS_SERVER(dir); |
1990 | struct nfs_openargs *o_arg = &data->o_arg; | |
1991 | struct nfs_openres *o_res = &data->o_res; | |
1992 | struct rpc_task *task; | |
5138fde0 TM |
1993 | struct rpc_message msg = { |
1994 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1995 | .rpc_argp = o_arg, | |
1996 | .rpc_resp = o_res, | |
1997 | .rpc_cred = data->owner->so_cred, | |
1998 | }; | |
c970aa85 TM |
1999 | struct rpc_task_setup task_setup_data = { |
2000 | .rpc_client = server->client, | |
5138fde0 | 2001 | .rpc_message = &msg, |
c970aa85 TM |
2002 | .callback_ops = &nfs4_open_ops, |
2003 | .callback_data = data, | |
101070ca | 2004 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2005 | .flags = RPC_TASK_ASYNC, |
2006 | }; | |
24ac23ab TM |
2007 | int status; |
2008 | ||
a9c92d6b | 2009 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2010 | kref_get(&data->kref); |
3e309914 TM |
2011 | data->rpc_done = 0; |
2012 | data->rpc_status = 0; | |
2ced46c2 | 2013 | data->cancelled = 0; |
bdeca1b7 TM |
2014 | data->is_recover = 0; |
2015 | if (isrecover) { | |
8fe72bac | 2016 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2017 | data->is_recover = 1; |
2018 | } | |
c970aa85 | 2019 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2020 | if (IS_ERR(task)) |
2021 | return PTR_ERR(task); | |
2022 | status = nfs4_wait_for_completion_rpc_task(task); | |
2023 | if (status != 0) { | |
2024 | data->cancelled = 1; | |
2025 | smp_wmb(); | |
2026 | } else | |
2027 | status = data->rpc_status; | |
2028 | rpc_put_task(task); | |
2029 | ||
2030 | return status; | |
2031 | } | |
2032 | ||
2033 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2034 | { | |
2b0143b5 | 2035 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2036 | struct nfs_openres *o_res = &data->o_res; |
2037 | int status; | |
2038 | ||
2039 | status = nfs4_run_open_task(data, 1); | |
2040 | if (status != 0 || !data->rpc_done) | |
2041 | return status; | |
2042 | ||
6926afd1 TM |
2043 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2044 | ||
b257957e AB |
2045 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2046 | status = _nfs4_proc_open_confirm(data); | |
2047 | if (status != 0) | |
2048 | return status; | |
2049 | } | |
2050 | ||
2051 | return status; | |
2052 | } | |
2053 | ||
f3792d63 TM |
2054 | /* |
2055 | * Additional permission checks in order to distinguish between an | |
2056 | * open for read, and an open for execute. This works around the | |
2057 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2058 | * the same. | |
2059 | * Note that in the non-execute case, we want to turn off permission | |
2060 | * checking if we just created a new file (POSIX open() semantics). | |
2061 | */ | |
6168f62c WAA |
2062 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2063 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2064 | struct nfs4_state *state, fmode_t fmode, |
2065 | int openflags) | |
6168f62c WAA |
2066 | { |
2067 | struct nfs_access_entry cache; | |
2068 | u32 mask; | |
2069 | ||
2070 | /* access call failed or for some reason the server doesn't | |
2071 | * support any access modes -- defer access call until later */ | |
2072 | if (opendata->o_res.access_supported == 0) | |
2073 | return 0; | |
2074 | ||
2075 | mask = 0; | |
f3792d63 TM |
2076 | /* |
2077 | * Use openflags to check for exec, because fmode won't | |
2078 | * always have FMODE_EXEC set when file open for exec. | |
2079 | */ | |
f8d9a897 WAA |
2080 | if (openflags & __FMODE_EXEC) { |
2081 | /* ONLY check for exec rights */ | |
2082 | mask = MAY_EXEC; | |
f3792d63 | 2083 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2084 | mask = MAY_READ; |
6168f62c WAA |
2085 | |
2086 | cache.cred = cred; | |
2087 | cache.jiffies = jiffies; | |
2088 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2089 | nfs_access_add_cache(state->inode, &cache); | |
2090 | ||
bbd3a8ee | 2091 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2092 | return 0; |
2093 | ||
2094 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2095 | nfs4_close_state(state, fmode); | |
998f40b5 | 2096 | return -EACCES; |
6168f62c WAA |
2097 | } |
2098 | ||
b257957e AB |
2099 | /* |
2100 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2101 | */ | |
2102 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2103 | { | |
2b0143b5 | 2104 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2105 | struct nfs_server *server = NFS_SERVER(dir); |
2106 | struct nfs_openargs *o_arg = &data->o_arg; | |
2107 | struct nfs_openres *o_res = &data->o_res; | |
2108 | int status; | |
2109 | ||
2110 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2111 | if (!data->rpc_done) |
2112 | return status; | |
2113 | if (status != 0) { | |
2114 | if (status == -NFS4ERR_BADNAME && | |
2115 | !(o_arg->open_flags & O_CREAT)) | |
2116 | return -ENOENT; | |
24ac23ab | 2117 | return status; |
08ef7bd3 | 2118 | } |
24ac23ab | 2119 | |
6926afd1 TM |
2120 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2121 | ||
5bc2afc2 | 2122 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2123 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2124 | if (o_arg->open_flags & O_EXCL) |
2125 | data->file_created = 1; | |
2126 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2127 | data->file_created = 1; | |
2128 | } | |
0df5dd4a TM |
2129 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2130 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2131 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2132 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2133 | if (status != 0) |
24ac23ab | 2134 | return status; |
1da177e4 LT |
2135 | } |
2136 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2137 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2138 | return 0; |
1da177e4 LT |
2139 | } |
2140 | ||
d83217c1 AA |
2141 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2142 | { | |
2143 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2144 | } | |
2145 | ||
1da177e4 LT |
2146 | /* |
2147 | * OPEN_EXPIRED: | |
2148 | * reclaim state on the server after a network partition. | |
2149 | * Assumes caller holds the appropriate lock | |
2150 | */ | |
539cd03a | 2151 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2152 | { |
e56e0b78 | 2153 | struct nfs4_opendata *opendata; |
864472e9 | 2154 | int ret; |
1da177e4 | 2155 | |
4a1c0893 | 2156 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2157 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2158 | if (IS_ERR(opendata)) |
2159 | return PTR_ERR(opendata); | |
864472e9 | 2160 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2161 | if (ret == -ESTALE) |
3d4ff43d | 2162 | d_drop(ctx->dentry); |
c6d00e63 | 2163 | nfs4_opendata_put(opendata); |
864472e9 | 2164 | return ret; |
1da177e4 LT |
2165 | } |
2166 | ||
a9ed2e25 | 2167 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2168 | { |
539cd03a | 2169 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2170 | struct nfs4_exception exception = { }; |
2171 | int err; | |
2172 | ||
2173 | do { | |
539cd03a | 2174 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2175 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2176 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2177 | continue; | |
a9ed2e25 TM |
2178 | switch (err) { |
2179 | default: | |
2180 | goto out; | |
2181 | case -NFS4ERR_GRACE: | |
2182 | case -NFS4ERR_DELAY: | |
2183 | nfs4_handle_exception(server, err, &exception); | |
2184 | err = 0; | |
2185 | } | |
202b50dc | 2186 | } while (exception.retry); |
a9ed2e25 | 2187 | out: |
202b50dc TM |
2188 | return err; |
2189 | } | |
2190 | ||
1da177e4 LT |
2191 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2192 | { | |
1da177e4 | 2193 | struct nfs_open_context *ctx; |
864472e9 | 2194 | int ret; |
1da177e4 | 2195 | |
864472e9 TM |
2196 | ctx = nfs4_state_find_open_context(state); |
2197 | if (IS_ERR(ctx)) | |
91876b13 | 2198 | return -EAGAIN; |
539cd03a | 2199 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2200 | put_nfs_open_context(ctx); |
2201 | return ret; | |
1da177e4 LT |
2202 | } |
2203 | ||
4dfd4f7a TM |
2204 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2205 | { | |
2206 | nfs_remove_bad_delegation(state->inode); | |
2207 | write_seqlock(&state->seqlock); | |
2208 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2209 | write_sequnlock(&state->seqlock); | |
2210 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2211 | } | |
2212 | ||
2213 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2214 | { | |
2215 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2216 | nfs_finish_clear_delegation_stateid(state); | |
2217 | } | |
2218 | ||
2219 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2220 | { | |
2221 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2222 | nfs40_clear_delegation_stateid(state); | |
2223 | return nfs4_open_expired(sp, state); | |
2224 | } | |
2225 | ||
f062eb6c | 2226 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2227 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2228 | { |
f062eb6c | 2229 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2230 | nfs4_stateid stateid; |
ab7cb0df | 2231 | struct nfs_delegation *delegation; |
0c116cad TM |
2232 | struct rpc_cred *cred; |
2233 | int status; | |
3e60ffdd | 2234 | |
ab7cb0df TM |
2235 | /* Get the delegation credential for use by test/free_stateid */ |
2236 | rcu_read_lock(); | |
2237 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2238 | if (delegation == NULL) { |
ab7cb0df | 2239 | rcu_read_unlock(); |
0c116cad TM |
2240 | return; |
2241 | } | |
2242 | ||
2243 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2244 | cred = get_rpccred(delegation->cred); | |
2245 | rcu_read_unlock(); | |
2246 | status = nfs41_test_stateid(server, &stateid, cred); | |
2247 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2248 | |
3e60ffdd CL |
2249 | if (status != NFS_OK) { |
2250 | /* Free the stateid unless the server explicitly | |
2251 | * informs us the stateid is unrecognized. */ | |
2252 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2253 | nfs41_free_stateid(server, &stateid, cred); |
2254 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2255 | } |
ab7cb0df | 2256 | |
0c116cad | 2257 | put_rpccred(cred); |
3e60ffdd CL |
2258 | } |
2259 | ||
2260 | /** | |
2261 | * nfs41_check_open_stateid - possibly free an open stateid | |
2262 | * | |
2263 | * @state: NFSv4 state for an inode | |
2264 | * | |
2265 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2266 | * Otherwise a negative NFS4ERR value is returned. | |
2267 | */ | |
2268 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2269 | { | |
2270 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2271 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2272 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2273 | int status; |
2274 | ||
2275 | /* If a state reset has been done, test_stateid is unneeded */ | |
2276 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2277 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2278 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2279 | return -NFS4ERR_BAD_STATEID; | |
2280 | ||
ab7cb0df | 2281 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2282 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2283 | if (status != NFS_OK) { |
2284 | /* Free the stateid unless the server explicitly | |
2285 | * informs us the stateid is unrecognized. */ | |
2286 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2287 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2288 | |
2289 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2290 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2291 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2292 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2293 | } |
2294 | return status; | |
2295 | } | |
2296 | ||
2297 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2298 | { | |
eb64cf96 | 2299 | int status; |
b01dd1d8 | 2300 | |
0c116cad | 2301 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2302 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2303 | if (status != NFS_OK) |
2304 | status = nfs4_open_expired(sp, state); | |
2305 | return status; | |
f062eb6c BS |
2306 | } |
2307 | #endif | |
2308 | ||
aa53ed54 JL |
2309 | /* |
2310 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2311 | * fields corresponding to attributes that were used to store the verifier. | |
2312 | * Make sure we clobber those fields in the later setattr call | |
2313 | */ | |
5334c5bd KM |
2314 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2315 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2316 | { |
5334c5bd KM |
2317 | const u32 *attrset = opendata->o_res.attrset; |
2318 | ||
2319 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2320 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2321 | sattr->ia_valid |= ATTR_ATIME; | |
2322 | ||
5334c5bd | 2323 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2324 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2325 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2326 | |
2327 | /* Except MODE, it seems harmless of setting twice. */ | |
2328 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2329 | sattr->ia_valid &= ~ATTR_MODE; | |
2330 | ||
2331 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2332 | *label = NULL; | |
aa53ed54 JL |
2333 | } |
2334 | ||
c21443c2 TM |
2335 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2336 | fmode_t fmode, | |
2337 | int flags, | |
3efb9722 | 2338 | struct nfs_open_context *ctx) |
c21443c2 TM |
2339 | { |
2340 | struct nfs4_state_owner *sp = opendata->owner; | |
2341 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2342 | struct dentry *dentry; |
c21443c2 TM |
2343 | struct nfs4_state *state; |
2344 | unsigned int seq; | |
2345 | int ret; | |
2346 | ||
2347 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2348 | ||
2349 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2350 | if (ret != 0) |
c21443c2 TM |
2351 | goto out; |
2352 | ||
2353 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2354 | ret = PTR_ERR(state); | |
2355 | if (IS_ERR(state)) | |
2356 | goto out; | |
2357 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2358 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2359 | ||
275bb307 | 2360 | dentry = opendata->dentry; |
2b0143b5 | 2361 | if (d_really_is_negative(dentry)) { |
275bb307 TM |
2362 | /* FIXME: Is this d_drop() ever needed? */ |
2363 | d_drop(dentry); | |
2364 | dentry = d_add_unique(dentry, igrab(state->inode)); | |
2365 | if (dentry == NULL) { | |
2366 | dentry = opendata->dentry; | |
2367 | } else if (dentry != ctx->dentry) { | |
2368 | dput(ctx->dentry); | |
2369 | ctx->dentry = dget(dentry); | |
2370 | } | |
2371 | nfs_set_verifier(dentry, | |
2b0143b5 | 2372 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2373 | } |
2374 | ||
c21443c2 TM |
2375 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2376 | if (ret != 0) | |
2377 | goto out; | |
2378 | ||
3efb9722 | 2379 | ctx->state = state; |
2b0143b5 | 2380 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2381 | nfs_inode_attach_open_context(ctx); |
2382 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2383 | nfs4_schedule_stateid_recovery(server, state); | |
2384 | } | |
c21443c2 TM |
2385 | out: |
2386 | return ret; | |
2387 | } | |
2388 | ||
1da177e4 | 2389 | /* |
24ac23ab | 2390 | * Returns a referenced nfs4_state |
1da177e4 | 2391 | */ |
82be417a | 2392 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2393 | struct nfs_open_context *ctx, |
82be417a AA |
2394 | int flags, |
2395 | struct iattr *sattr, | |
5bc2afc2 TM |
2396 | struct nfs4_label *label, |
2397 | int *opened) | |
1da177e4 LT |
2398 | { |
2399 | struct nfs4_state_owner *sp; | |
2400 | struct nfs4_state *state = NULL; | |
2401 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2402 | struct nfs4_opendata *opendata; |
4197a055 TM |
2403 | struct dentry *dentry = ctx->dentry; |
2404 | struct rpc_cred *cred = ctx->cred; | |
2405 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2406 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2407 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2408 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2409 | int status; |
1da177e4 LT |
2410 | |
2411 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2412 | status = -ENOMEM; |
d1e284d5 TM |
2413 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2414 | if (sp == NULL) { | |
1da177e4 LT |
2415 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2416 | goto out_err; | |
2417 | } | |
58d9714a TM |
2418 | status = nfs4_recover_expired_lease(server); |
2419 | if (status != 0) | |
b4454fe1 | 2420 | goto err_put_state_owner; |
2b0143b5 DH |
2421 | if (d_really_is_positive(dentry)) |
2422 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2423 | status = -ENOMEM; |
2b0143b5 | 2424 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2425 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2426 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2427 | label, claim, GFP_KERNEL); |
e56e0b78 | 2428 | if (opendata == NULL) |
95d35cb4 | 2429 | goto err_put_state_owner; |
1da177e4 | 2430 | |
14c43f76 DQ |
2431 | if (label) { |
2432 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2433 | if (IS_ERR(olabel)) { | |
2434 | status = PTR_ERR(olabel); | |
2435 | goto err_opendata_put; | |
2436 | } | |
2437 | } | |
2438 | ||
e911b815 TM |
2439 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2440 | if (!opendata->f_attr.mdsthreshold) { | |
2441 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2442 | if (!opendata->f_attr.mdsthreshold) | |
2443 | goto err_free_label; | |
2444 | } | |
1549210f | 2445 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2446 | } |
2b0143b5 DH |
2447 | if (d_really_is_positive(dentry)) |
2448 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2449 | |
3efb9722 | 2450 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2451 | if (status != 0) |
14c43f76 | 2452 | goto err_free_label; |
3efb9722 | 2453 | state = ctx->state; |
6168f62c | 2454 | |
efcbc04e | 2455 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2456 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2457 | nfs4_exclusive_attrset(opendata, sattr, &label); |
0ab64e0e TM |
2458 | |
2459 | nfs_fattr_init(opendata->o_res.f_attr); | |
2460 | status = nfs4_do_setattr(state->inode, cred, | |
2461 | opendata->o_res.f_attr, sattr, | |
1775fd3e DQ |
2462 | state, label, olabel); |
2463 | if (status == 0) { | |
f044636d TM |
2464 | nfs_setattr_update_inode(state->inode, sattr, |
2465 | opendata->o_res.f_attr); | |
aa9c2669 | 2466 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); |
1775fd3e | 2467 | } |
0ab64e0e | 2468 | } |
c5c3fb5f | 2469 | if (opened && opendata->file_created) |
5bc2afc2 | 2470 | *opened |= FILE_CREATED; |
82be417a | 2471 | |
e911b815 | 2472 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2473 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2474 | opendata->f_attr.mdsthreshold = NULL; |
2475 | } | |
82be417a | 2476 | |
14c43f76 DQ |
2477 | nfs4_label_free(olabel); |
2478 | ||
c6d00e63 | 2479 | nfs4_opendata_put(opendata); |
1da177e4 | 2480 | nfs4_put_state_owner(sp); |
1da177e4 | 2481 | return 0; |
14c43f76 DQ |
2482 | err_free_label: |
2483 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2484 | err_opendata_put: |
2485 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2486 | err_put_state_owner: |
2487 | nfs4_put_state_owner(sp); | |
1da177e4 | 2488 | out_err: |
1da177e4 LT |
2489 | return status; |
2490 | } | |
2491 | ||
2492 | ||
82be417a | 2493 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2494 | struct nfs_open_context *ctx, |
82be417a AA |
2495 | int flags, |
2496 | struct iattr *sattr, | |
5bc2afc2 TM |
2497 | struct nfs4_label *label, |
2498 | int *opened) | |
1da177e4 | 2499 | { |
49f9a0fa | 2500 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2501 | struct nfs4_exception exception = { }; |
2502 | struct nfs4_state *res; | |
2503 | int status; | |
2504 | ||
2505 | do { | |
5bc2afc2 | 2506 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2507 | res = ctx->state; |
42113a75 | 2508 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2509 | if (status == 0) |
2510 | break; | |
2511 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2512 | * book-keeping w.r.t. state-changing operations | |
2513 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2514 | * It is actually a sign of a bug on the client or on the server. | |
2515 | * | |
2516 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2517 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2518 | * have unhashed the old state_owner for us, and that we can |
2519 | * therefore safely retry using a new one. We should still warn | |
2520 | * the user though... | |
2521 | */ | |
2522 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2523 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2524 | " returned a bad sequence-id error!\n", |
2525 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2526 | exception.retry = 1; |
2527 | continue; | |
2528 | } | |
550f5747 TM |
2529 | /* |
2530 | * BAD_STATEID on OPEN means that the server cancelled our | |
2531 | * state before it received the OPEN_CONFIRM. | |
2532 | * Recover by retrying the request as per the discussion | |
2533 | * on Page 181 of RFC3530. | |
2534 | */ | |
2535 | if (status == -NFS4ERR_BAD_STATEID) { | |
2536 | exception.retry = 1; | |
2537 | continue; | |
2538 | } | |
aac00a8d TM |
2539 | if (status == -EAGAIN) { |
2540 | /* We must have found a delegation */ | |
2541 | exception.retry = 1; | |
2542 | continue; | |
2543 | } | |
49f9a0fa TM |
2544 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2545 | continue; | |
2546 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2547 | status, &exception)); |
2548 | } while (exception.retry); | |
2549 | return res; | |
2550 | } | |
2551 | ||
659bfcd6 TM |
2552 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2553 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2554 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2555 | struct nfs4_label *olabel) | |
1da177e4 | 2556 | { |
3e4f6290 | 2557 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2558 | struct nfs_setattrargs arg = { |
3e4f6290 | 2559 | .fh = NFS_FH(inode), |
1da177e4 LT |
2560 | .iap = sattr, |
2561 | .server = server, | |
2562 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2563 | .label = ilabel, |
1da177e4 LT |
2564 | }; |
2565 | struct nfs_setattrres res = { | |
2566 | .fattr = fattr, | |
1775fd3e | 2567 | .label = olabel, |
1da177e4 LT |
2568 | .server = server, |
2569 | }; | |
2570 | struct rpc_message msg = { | |
659bfcd6 TM |
2571 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2572 | .rpc_argp = &arg, | |
2573 | .rpc_resp = &res, | |
2574 | .rpc_cred = cred, | |
1da177e4 | 2575 | }; |
26e976a8 | 2576 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2577 | fmode_t fmode; |
2578 | bool truncate; | |
65e4308d | 2579 | int status; |
1da177e4 | 2580 | |
aa9c2669 DQ |
2581 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2582 | if (ilabel) | |
2583 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2584 | ||
0e574af1 | 2585 | nfs_fattr_init(fattr); |
1da177e4 | 2586 | |
ee3ae84e TM |
2587 | /* Servers should only apply open mode checks for file size changes */ |
2588 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2589 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2590 | ||
2591 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2592 | /* Use that stateid */ | |
0418dae1 | 2593 | } else if (truncate && state != NULL) { |
2a369153 TM |
2594 | struct nfs_lockowner lockowner = { |
2595 | .l_owner = current->files, | |
2596 | .l_pid = current->tgid, | |
2597 | }; | |
0418dae1 TM |
2598 | if (!nfs4_valid_open_stateid(state)) |
2599 | return -EBADF; | |
2600 | if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2601 | &lockowner) == -EIO) | |
2602 | return -EBADF; | |
08e9eac4 | 2603 | } else |
f597c537 | 2604 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2605 | |
7c513058 | 2606 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2607 | if (status == 0 && state != NULL) |
2608 | renew_lease(server, timestamp); | |
65e4308d | 2609 | return status; |
1da177e4 LT |
2610 | } |
2611 | ||
659bfcd6 TM |
2612 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2613 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2614 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2615 | struct nfs4_label *olabel) | |
1da177e4 | 2616 | { |
3e4f6290 | 2617 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2618 | struct nfs4_exception exception = { |
2619 | .state = state, | |
3114ea7a | 2620 | .inode = inode, |
a1d0b5ee | 2621 | }; |
1da177e4 LT |
2622 | int err; |
2623 | do { | |
1775fd3e | 2624 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
c1578b76 | 2625 | trace_nfs4_setattr(inode, err); |
451146be TM |
2626 | switch (err) { |
2627 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2628 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2629 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2630 | "applying open mode checks to " | |
2631 | "a SETATTR that is not " | |
2632 | "changing file size.\n", | |
2633 | server->nfs_client->cl_hostname); | |
2634 | } | |
451146be TM |
2635 | if (state && !(state->state & FMODE_WRITE)) { |
2636 | err = -EBADF; | |
2637 | if (sattr->ia_valid & ATTR_OPEN) | |
2638 | err = -EACCES; | |
2639 | goto out; | |
2640 | } | |
2641 | } | |
2642 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2643 | } while (exception.retry); |
451146be | 2644 | out: |
1da177e4 LT |
2645 | return err; |
2646 | } | |
2647 | ||
2648 | struct nfs4_closedata { | |
2649 | struct inode *inode; | |
2650 | struct nfs4_state *state; | |
2651 | struct nfs_closeargs arg; | |
2652 | struct nfs_closeres res; | |
516a6af6 | 2653 | struct nfs_fattr fattr; |
26e976a8 | 2654 | unsigned long timestamp; |
f7e8917a FI |
2655 | bool roc; |
2656 | u32 roc_barrier; | |
1da177e4 LT |
2657 | }; |
2658 | ||
963d8fe5 | 2659 | static void nfs4_free_closedata(void *data) |
9512135d | 2660 | { |
963d8fe5 TM |
2661 | struct nfs4_closedata *calldata = data; |
2662 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2663 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2664 | |
f7e8917a FI |
2665 | if (calldata->roc) |
2666 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2667 | nfs4_put_open_state(calldata->state); |
2668 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2669 | nfs4_put_state_owner(sp); |
322b2b90 | 2670 | nfs_sb_deactive(sb); |
9512135d TM |
2671 | kfree(calldata); |
2672 | } | |
2673 | ||
963d8fe5 | 2674 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2675 | { |
963d8fe5 | 2676 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2677 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2678 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2679 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2680 | |
a3ca5651 | 2681 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2682 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2683 | return; | |
42113a75 | 2684 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2685 | /* hmm. we are done with the inode, and in the process of freeing |
2686 | * the state_owner. we keep this around to process errors | |
2687 | */ | |
1da177e4 LT |
2688 | switch (task->tk_status) { |
2689 | case 0: | |
412f6c4c | 2690 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2691 | if (calldata->roc) |
f7e8917a FI |
2692 | pnfs_roc_set_barrier(state->inode, |
2693 | calldata->roc_barrier); | |
26e976a8 | 2694 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2695 | break; |
69794ad7 | 2696 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2697 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2698 | case -NFS4ERR_OLD_STATEID: |
2699 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2700 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2701 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2702 | &state->open_stateid)) { |
566fcec6 TM |
2703 | rpc_restart_call_prepare(task); |
2704 | goto out_release; | |
2705 | } | |
dc0b027d | 2706 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2707 | break; |
1da177e4 | 2708 | default: |
8478eaa1 | 2709 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2710 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2711 | goto out_release; |
2712 | } | |
1da177e4 | 2713 | } |
4a1e2feb TM |
2714 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
2715 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 2716 | out_release: |
72211dbe | 2717 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2718 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2719 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2720 | } |
2721 | ||
4ce70ada | 2722 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2723 | { |
4ce70ada | 2724 | struct nfs4_closedata *calldata = data; |
9512135d | 2725 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2726 | struct inode *inode = calldata->inode; |
aee7af35 | 2727 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2728 | int call_close = 0; |
9512135d | 2729 | |
a3ca5651 | 2730 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2731 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2732 | goto out_wait; |
003707c7 | 2733 | |
88069f77 | 2734 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2735 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2736 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2737 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2738 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2739 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2740 | /* Calculate the change in open mode */ |
cd9288ff | 2741 | calldata->arg.fmode = 0; |
e7616923 | 2742 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2743 | if (state->n_rdonly == 0) |
2744 | call_close |= is_rdonly; | |
2745 | else if (is_rdonly) | |
2746 | calldata->arg.fmode |= FMODE_READ; | |
2747 | if (state->n_wronly == 0) | |
2748 | call_close |= is_wronly; | |
2749 | else if (is_wronly) | |
2750 | calldata->arg.fmode |= FMODE_WRITE; | |
2751 | } else if (is_rdwr) | |
2752 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2753 | ||
2754 | if (calldata->arg.fmode == 0) | |
2755 | call_close |= is_rdwr; | |
2756 | ||
5d422301 TM |
2757 | if (!nfs4_valid_open_stateid(state)) |
2758 | call_close = 0; | |
4cecb76f | 2759 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2760 | |
2761 | if (!call_close) { | |
963d8fe5 | 2762 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2763 | goto out_no_action; |
9512135d | 2764 | } |
88069f77 | 2765 | |
3c13cb5b | 2766 | if (calldata->arg.fmode == 0) |
88069f77 | 2767 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2768 | if (calldata->roc) |
2769 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2770 | ||
6ae37339 TM |
2771 | calldata->arg.share_access = |
2772 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2773 | calldata->arg.fmode, 0); | |
88069f77 | 2774 | |
516a6af6 | 2775 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2776 | calldata->timestamp = jiffies; |
7fdab069 | 2777 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2778 | &calldata->arg.seq_args, |
2779 | &calldata->res.seq_res, | |
2240a9e2 TM |
2780 | task) != 0) |
2781 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2782 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2783 | return; |
2784 | out_no_action: | |
2785 | task->tk_action = NULL; | |
2786 | out_wait: | |
2787 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2788 | } |
2789 | ||
963d8fe5 | 2790 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2791 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2792 | .rpc_call_done = nfs4_close_done, |
2793 | .rpc_release = nfs4_free_closedata, | |
2794 | }; | |
2795 | ||
fe08c546 PT |
2796 | static bool nfs4_roc(struct inode *inode) |
2797 | { | |
40dd4b7a | 2798 | if (!nfs_have_layout(inode)) |
fe08c546 | 2799 | return false; |
fe08c546 PT |
2800 | return pnfs_roc(inode); |
2801 | } | |
2802 | ||
1da177e4 LT |
2803 | /* |
2804 | * It is possible for data to be read/written from a mem-mapped file | |
2805 | * after the sys_close call (which hits the vfs layer as a flush). | |
2806 | * This means that we can't safely call nfsv4 close on a file until | |
2807 | * the inode is cleared. This in turn means that we are not good | |
2808 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2809 | * share state even when we are done with one of the three share | |
2810 | * stateid's in the inode. | |
2811 | * | |
2812 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2813 | */ | |
1f7977c1 | 2814 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2815 | { |
4a35bd41 | 2816 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2817 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2818 | struct nfs4_closedata *calldata; |
b39e625b TM |
2819 | struct nfs4_state_owner *sp = state->owner; |
2820 | struct rpc_task *task; | |
5138fde0 TM |
2821 | struct rpc_message msg = { |
2822 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2823 | .rpc_cred = state->owner->so_cred, | |
2824 | }; | |
c970aa85 TM |
2825 | struct rpc_task_setup task_setup_data = { |
2826 | .rpc_client = server->client, | |
5138fde0 | 2827 | .rpc_message = &msg, |
c970aa85 | 2828 | .callback_ops = &nfs4_close_ops, |
101070ca | 2829 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2830 | .flags = RPC_TASK_ASYNC, |
2831 | }; | |
9512135d | 2832 | int status = -ENOMEM; |
1da177e4 | 2833 | |
fa940720 WAA |
2834 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2835 | &task_setup_data.rpc_client, &msg); | |
2836 | ||
8535b2be | 2837 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2838 | if (calldata == NULL) |
9512135d | 2839 | goto out; |
a9c92d6b | 2840 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2841 | calldata->inode = state->inode; |
1da177e4 | 2842 | calldata->state = state; |
4a35bd41 | 2843 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2844 | /* Serialization for the sequence id */ |
63f5f796 TM |
2845 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2846 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2847 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2848 | goto out_free_calldata; |
dc0b027d | 2849 | calldata->arg.fmode = 0; |
a65318bf | 2850 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2851 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2852 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2853 | calldata->res.server = server; |
fe08c546 | 2854 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2855 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2856 | |
1174dd1f TM |
2857 | msg.rpc_argp = &calldata->arg; |
2858 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2859 | task_setup_data.callback_data = calldata; |
2860 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2861 | if (IS_ERR(task)) |
2862 | return PTR_ERR(task); | |
a49c3c77 TM |
2863 | status = 0; |
2864 | if (wait) | |
2865 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2866 | rpc_put_task(task); |
a49c3c77 | 2867 | return status; |
9512135d TM |
2868 | out_free_calldata: |
2869 | kfree(calldata); | |
2870 | out: | |
b39e625b TM |
2871 | nfs4_put_open_state(state); |
2872 | nfs4_put_state_owner(sp); | |
9512135d | 2873 | return status; |
1da177e4 LT |
2874 | } |
2875 | ||
2b484297 | 2876 | static struct inode * |
5bc2afc2 TM |
2877 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
2878 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 2879 | { |
1da177e4 | 2880 | struct nfs4_state *state; |
aa9c2669 DQ |
2881 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
2882 | ||
2883 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 2884 | |
565277f6 | 2885 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 2886 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
2887 | |
2888 | nfs4_label_release_security(label); | |
2889 | ||
f46e0bd3 TM |
2890 | if (IS_ERR(state)) |
2891 | return ERR_CAST(state); | |
275bb307 | 2892 | return state->inode; |
1da177e4 LT |
2893 | } |
2894 | ||
1185a552 | 2895 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2896 | { |
2897 | if (ctx->state == NULL) | |
2898 | return; | |
2899 | if (is_sync) | |
643168c2 | 2900 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2901 | else |
643168c2 | 2902 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2903 | } |
1da177e4 | 2904 | |
b944dba3 TM |
2905 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
2906 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 2907 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 2908 | |
1da177e4 LT |
2909 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
2910 | { | |
8c61282f | 2911 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
2912 | struct nfs4_server_caps_arg args = { |
2913 | .fhandle = fhandle, | |
8c61282f | 2914 | .bitmask = bitmask, |
43652ad5 | 2915 | }; |
1da177e4 LT |
2916 | struct nfs4_server_caps_res res = {}; |
2917 | struct rpc_message msg = { | |
2918 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2919 | .rpc_argp = &args, |
1da177e4 LT |
2920 | .rpc_resp = &res, |
2921 | }; | |
2922 | int status; | |
2923 | ||
8c61282f KM |
2924 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
2925 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
2926 | FATTR4_WORD0_LINK_SUPPORT | | |
2927 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
2928 | FATTR4_WORD0_ACLSUPPORT; | |
2929 | if (minorversion) | |
2930 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
2931 | ||
7c513058 | 2932 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2933 | if (status == 0) { |
b944dba3 | 2934 | /* Sanity check the server answers */ |
8c61282f | 2935 | switch (minorversion) { |
b944dba3 TM |
2936 | case 0: |
2937 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
2938 | res.attr_bitmask[2] = 0; | |
2939 | break; | |
2940 | case 1: | |
2941 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
2942 | break; | |
2943 | case 2: | |
2944 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
2945 | } | |
1da177e4 | 2946 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
2947 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2948 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2949 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2950 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
2951 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
2952 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
2953 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
2954 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
2955 | server->caps |= NFS_CAP_ACLS; |
2956 | if (res.has_links != 0) | |
2957 | server->caps |= NFS_CAP_HARDLINKS; | |
2958 | if (res.has_symlinks != 0) | |
2959 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2960 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2961 | server->caps |= NFS_CAP_FILEID; | |
2962 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2963 | server->caps |= NFS_CAP_MODE; | |
2964 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2965 | server->caps |= NFS_CAP_NLINK; | |
2966 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2967 | server->caps |= NFS_CAP_OWNER; | |
2968 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2969 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2970 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2971 | server->caps |= NFS_CAP_ATIME; | |
2972 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2973 | server->caps |= NFS_CAP_CTIME; | |
2974 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2975 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
2976 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
2977 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2978 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
2979 | #endif | |
2980 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
2981 | sizeof(server->attr_bitmask)); | |
b944dba3 | 2982 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 2983 | |
a65318bf TM |
2984 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2985 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2986 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 2987 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
2988 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
2989 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 2990 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2991 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2992 | } |
cccef3b9 | 2993 | |
1da177e4 LT |
2994 | return status; |
2995 | } | |
2996 | ||
55a97593 | 2997 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2998 | { |
2999 | struct nfs4_exception exception = { }; | |
3000 | int err; | |
3001 | do { | |
3002 | err = nfs4_handle_exception(server, | |
3003 | _nfs4_server_capabilities(server, fhandle), | |
3004 | &exception); | |
3005 | } while (exception.retry); | |
3006 | return err; | |
3007 | } | |
3008 | ||
3009 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3010 | struct nfs_fsinfo *info) | |
3011 | { | |
aa9c2669 | 3012 | u32 bitmask[3]; |
1da177e4 | 3013 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3014 | .bitmask = bitmask, |
1da177e4 LT |
3015 | }; |
3016 | struct nfs4_lookup_res res = { | |
3017 | .server = server, | |
0e574af1 | 3018 | .fattr = info->fattr, |
1da177e4 LT |
3019 | .fh = fhandle, |
3020 | }; | |
3021 | struct rpc_message msg = { | |
3022 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3023 | .rpc_argp = &args, | |
3024 | .rpc_resp = &res, | |
3025 | }; | |
008f55d0 | 3026 | |
aa9c2669 DQ |
3027 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3028 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3029 | /* | |
3030 | * Process the label in the upcoming getfattr | |
3031 | */ | |
3032 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3033 | ||
0e574af1 | 3034 | nfs_fattr_init(info->fattr); |
7c513058 | 3035 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3036 | } |
3037 | ||
3038 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3039 | struct nfs_fsinfo *info) | |
3040 | { | |
3041 | struct nfs4_exception exception = { }; | |
3042 | int err; | |
3043 | do { | |
fb8a5ba8 | 3044 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3045 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3046 | switch (err) { |
3047 | case 0: | |
3048 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3049 | goto out; |
fb8a5ba8 BS |
3050 | default: |
3051 | err = nfs4_handle_exception(server, err, &exception); | |
3052 | } | |
1da177e4 | 3053 | } while (exception.retry); |
05e9cfb4 | 3054 | out: |
1da177e4 LT |
3055 | return err; |
3056 | } | |
3057 | ||
8f70e95f BS |
3058 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3059 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3060 | { | |
c2190661 TM |
3061 | struct rpc_auth_create_args auth_args = { |
3062 | .pseudoflavor = flavor, | |
3063 | }; | |
8f70e95f BS |
3064 | struct rpc_auth *auth; |
3065 | int ret; | |
3066 | ||
c2190661 | 3067 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3068 | if (IS_ERR(auth)) { |
75bc8821 | 3069 | ret = -EACCES; |
8f70e95f BS |
3070 | goto out; |
3071 | } | |
3072 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3073 | out: |
3074 | return ret; | |
3075 | } | |
3076 | ||
9a744ba3 CL |
3077 | /* |
3078 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3079 | * | |
3080 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3081 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3082 | * | |
3083 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3084 | * negative errno value. | |
3085 | */ | |
801a16dc | 3086 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3087 | struct nfs_fsinfo *info) |
1da177e4 | 3088 | { |
9a744ba3 CL |
3089 | /* Per 3530bis 15.33.5 */ |
3090 | static const rpc_authflavor_t flav_array[] = { | |
3091 | RPC_AUTH_GSS_KRB5P, | |
3092 | RPC_AUTH_GSS_KRB5I, | |
3093 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3094 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3095 | RPC_AUTH_NULL, |
3096 | }; | |
3097 | int status = -EPERM; | |
3098 | size_t i; | |
6a1a1e34 | 3099 | |
4d4b69dd WAA |
3100 | if (server->auth_info.flavor_len > 0) { |
3101 | /* try each flavor specified by user */ | |
3102 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3103 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3104 | server->auth_info.flavors[i]); | |
3105 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3106 | continue; | |
3107 | break; | |
3108 | } | |
3109 | } else { | |
3110 | /* no flavors specified by user, try default list */ | |
3111 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3112 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3113 | flav_array[i]); | |
3114 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3115 | continue; | |
3116 | break; | |
3117 | } | |
8f70e95f | 3118 | } |
9a744ba3 | 3119 | |
fb8a5ba8 BS |
3120 | /* |
3121 | * -EACCESS could mean that the user doesn't have correct permissions | |
3122 | * to access the mount. It could also mean that we tried to mount | |
3123 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3124 | * existing mount programs don't handle -EACCES very well so it should | |
3125 | * be mapped to -EPERM instead. | |
3126 | */ | |
3127 | if (status == -EACCES) | |
3128 | status = -EPERM; | |
801a16dc BS |
3129 | return status; |
3130 | } | |
3131 | ||
2ed4b95b CL |
3132 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3133 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3134 | { | |
3135 | int mv = server->nfs_client->cl_minorversion; | |
3136 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3137 | } | |
3138 | ||
3139 | /** | |
3140 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3141 | * @server: initialized nfs_server handle | |
3142 | * @fhandle: we fill in the pseudo-fs root file handle | |
3143 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3144 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3145 | * |
3146 | * Returns zero on success, or a negative errno. | |
801a16dc | 3147 | */ |
3028eb2b | 3148 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3149 | struct nfs_fsinfo *info, |
3150 | bool auth_probe) | |
801a16dc | 3151 | { |
c7757074 | 3152 | int status = 0; |
2ed4b95b | 3153 | |
c7757074 | 3154 | if (!auth_probe) |
5e6b1990 | 3155 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3156 | |
3157 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
2ed4b95b CL |
3158 | status = nfs4_do_find_root_sec(server, fhandle, info); |
3159 | ||
1da177e4 LT |
3160 | if (status == 0) |
3161 | status = nfs4_server_capabilities(server, fhandle); | |
3162 | if (status == 0) | |
3163 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3164 | |
c12e87f4 | 3165 | return nfs4_map_errors(status); |
1da177e4 LT |
3166 | } |
3167 | ||
bae36241 BS |
3168 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3169 | struct nfs_fsinfo *info) | |
3170 | { | |
3171 | int error; | |
3172 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3173 | struct nfs4_label *label = NULL; |
bae36241 BS |
3174 | |
3175 | error = nfs4_server_capabilities(server, mntfh); | |
3176 | if (error < 0) { | |
3177 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3178 | return error; | |
3179 | } | |
3180 | ||
14c43f76 DQ |
3181 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3182 | if (IS_ERR(label)) | |
3183 | return PTR_ERR(label); | |
3184 | ||
1775fd3e | 3185 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3186 | if (error < 0) { |
3187 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3188 | goto err_free_label; |
bae36241 BS |
3189 | } |
3190 | ||
3191 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3192 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3193 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3194 | ||
14c43f76 DQ |
3195 | err_free_label: |
3196 | nfs4_label_free(label); | |
3197 | ||
bae36241 BS |
3198 | return error; |
3199 | } | |
3200 | ||
6b97fd3d MN |
3201 | /* |
3202 | * Get locations and (maybe) other attributes of a referral. | |
3203 | * Note that we'll actually follow the referral later when | |
3204 | * we detect fsid mismatch in inode revalidation | |
3205 | */ | |
f05d147f BS |
3206 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3207 | const struct qstr *name, struct nfs_fattr *fattr, | |
3208 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3209 | { |
3210 | int status = -ENOMEM; | |
3211 | struct page *page = NULL; | |
3212 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3213 | |
3214 | page = alloc_page(GFP_KERNEL); | |
3215 | if (page == NULL) | |
3216 | goto out; | |
3217 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3218 | if (locations == NULL) | |
3219 | goto out; | |
3220 | ||
f05d147f | 3221 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3222 | if (status != 0) |
3223 | goto out; | |
519ae255 CL |
3224 | |
3225 | /* | |
3226 | * If the fsid didn't change, this is a migration event, not a | |
3227 | * referral. Cause us to drop into the exception handler, which | |
3228 | * will kick off migration recovery. | |
3229 | */ | |
6b97fd3d | 3230 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3231 | dprintk("%s: server did not return a different fsid for" |
3232 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3233 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3234 | goto out; |
3235 | } | |
533eb461 AA |
3236 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3237 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3238 | |
533eb461 | 3239 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3240 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3241 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3242 | out: | |
3243 | if (page) | |
3244 | __free_page(page); | |
5d7ca35a | 3245 | kfree(locations); |
6b97fd3d MN |
3246 | return status; |
3247 | } | |
3248 | ||
1775fd3e DQ |
3249 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3250 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3251 | { |
3252 | struct nfs4_getattr_arg args = { | |
3253 | .fh = fhandle, | |
3254 | .bitmask = server->attr_bitmask, | |
3255 | }; | |
3256 | struct nfs4_getattr_res res = { | |
3257 | .fattr = fattr, | |
1775fd3e | 3258 | .label = label, |
1da177e4 LT |
3259 | .server = server, |
3260 | }; | |
3261 | struct rpc_message msg = { | |
3262 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3263 | .rpc_argp = &args, | |
3264 | .rpc_resp = &res, | |
3265 | }; | |
aa9c2669 DQ |
3266 | |
3267 | args.bitmask = nfs4_bitmask(server, label); | |
3268 | ||
0e574af1 | 3269 | nfs_fattr_init(fattr); |
7c513058 | 3270 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3271 | } |
3272 | ||
1775fd3e DQ |
3273 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3274 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3275 | { |
3276 | struct nfs4_exception exception = { }; | |
3277 | int err; | |
3278 | do { | |
b5f875a9 TM |
3279 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3280 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3281 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3282 | &exception); |
3283 | } while (exception.retry); | |
3284 | return err; | |
3285 | } | |
3286 | ||
3287 | /* | |
3288 | * The file is not closed if it is opened due to the a request to change | |
3289 | * the size of the file. The open call will not be needed once the | |
3290 | * VFS layer lookup-intents are implemented. | |
3291 | * | |
3292 | * Close is called when the inode is destroyed. | |
3293 | * If we haven't opened the file for O_WRONLY, we | |
3294 | * need to in the size_change case to obtain a stateid. | |
3295 | * | |
3296 | * Got race? | |
3297 | * Because OPEN is always done by name in nfsv4, it is | |
3298 | * possible that we opened a different file by the same | |
3299 | * name. We can recognize this race condition, but we | |
3300 | * can't do anything about it besides returning an error. | |
3301 | * | |
3302 | * This will be fixed with VFS changes (lookup-intent). | |
3303 | */ | |
3304 | static int | |
3305 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3306 | struct iattr *sattr) | |
3307 | { | |
2b0143b5 | 3308 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3309 | struct rpc_cred *cred = NULL; |
d530838b | 3310 | struct nfs4_state *state = NULL; |
14c43f76 | 3311 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3312 | int status; |
3313 | ||
88ac815c PT |
3314 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3315 | sattr->ia_valid & ATTR_SIZE && | |
3316 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3317 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3318 | |
0e574af1 | 3319 | nfs_fattr_init(fattr); |
1da177e4 | 3320 | |
2669940d AA |
3321 | /* Deal with open(O_TRUNC) */ |
3322 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3323 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3324 | |
3325 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3326 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3327 | return 0; |
3328 | ||
d530838b | 3329 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3330 | if (sattr->ia_valid & ATTR_FILE) { |
3331 | struct nfs_open_context *ctx; | |
3332 | ||
3333 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3334 | if (ctx) { |
3335 | cred = ctx->cred; | |
3336 | state = ctx->state; | |
3337 | } | |
659bfcd6 | 3338 | } |
08e9eac4 | 3339 | |
14c43f76 DQ |
3340 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3341 | if (IS_ERR(label)) | |
3342 | return PTR_ERR(label); | |
3343 | ||
3344 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3345 | if (status == 0) { |
f044636d | 3346 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3347 | nfs_setsecurity(inode, fattr, label); |
3348 | } | |
14c43f76 | 3349 | nfs4_label_free(label); |
1da177e4 LT |
3350 | return status; |
3351 | } | |
3352 | ||
0c2e53f1 TM |
3353 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3354 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3355 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3356 | { |
0c2e53f1 | 3357 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3358 | int status; |
3359 | struct nfs4_lookup_arg args = { | |
3360 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3361 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3362 | .name = name, |
3363 | }; | |
3364 | struct nfs4_lookup_res res = { | |
3365 | .server = server, | |
3366 | .fattr = fattr, | |
aa9c2669 | 3367 | .label = label, |
2b3de441 DH |
3368 | .fh = fhandle, |
3369 | }; | |
3370 | struct rpc_message msg = { | |
3371 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3372 | .rpc_argp = &args, | |
3373 | .rpc_resp = &res, | |
3374 | }; | |
3375 | ||
aa9c2669 DQ |
3376 | args.bitmask = nfs4_bitmask(server, label); |
3377 | ||
2b3de441 DH |
3378 | nfs_fattr_init(fattr); |
3379 | ||
1da177e4 | 3380 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3381 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3382 | dprintk("NFS reply lookup: %d\n", status); |
3383 | return status; | |
3384 | } | |
3385 | ||
72de53ec | 3386 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3387 | { |
7ebb9315 | 3388 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3389 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3390 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3391 | fattr->nlink = 2; | |
3392 | } | |
3393 | ||
72de53ec BS |
3394 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3395 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3396 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3397 | { |
3398 | struct nfs4_exception exception = { }; | |
72de53ec | 3399 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3400 | int err; |
3401 | do { | |
1775fd3e | 3402 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3403 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3404 | switch (err) { |
08ef7bd3 | 3405 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3406 | err = -ENOENT; |
3407 | goto out; | |
0c2e53f1 | 3408 | case -NFS4ERR_MOVED: |
f05d147f | 3409 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3410 | if (err == -NFS4ERR_MOVED) |
3411 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3412 | goto out; |
0c2e53f1 | 3413 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3414 | err = -EPERM; |
3415 | if (client != *clnt) | |
3416 | goto out; | |
66b06860 | 3417 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3418 | if (IS_ERR(client)) |
3419 | return PTR_ERR(client); | |
3420 | ||
3421 | exception.retry = 1; | |
3422 | break; | |
3423 | default: | |
3424 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3425 | } |
1da177e4 | 3426 | } while (exception.retry); |
72de53ec BS |
3427 | |
3428 | out: | |
3429 | if (err == 0) | |
3430 | *clnt = client; | |
3431 | else if (client != *clnt) | |
3432 | rpc_shutdown_client(client); | |
3433 | ||
1da177e4 LT |
3434 | return err; |
3435 | } | |
3436 | ||
80a16b21 | 3437 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3438 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3439 | struct nfs4_label *label) | |
72de53ec BS |
3440 | { |
3441 | int status; | |
3442 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3443 | ||
1775fd3e | 3444 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3445 | if (client != NFS_CLIENT(dir)) { |
3446 | rpc_shutdown_client(client); | |
3447 | nfs_fixup_secinfo_attributes(fattr); | |
3448 | } | |
3449 | return status; | |
3450 | } | |
3451 | ||
f05d147f BS |
3452 | struct rpc_clnt * |
3453 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3454 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3455 | { | |
b72888cb | 3456 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3457 | int status; |
f05d147f | 3458 | |
1775fd3e | 3459 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3460 | if (status < 0) |
f05d147f | 3461 | return ERR_PTR(status); |
b72888cb | 3462 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3463 | } |
3464 | ||
1da177e4 LT |
3465 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3466 | { | |
76b32999 | 3467 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3468 | struct nfs4_accessargs args = { |
3469 | .fh = NFS_FH(inode), | |
a4980e78 | 3470 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3471 | }; |
3472 | struct nfs4_accessres res = { | |
3473 | .server = server, | |
1da177e4 | 3474 | }; |
1da177e4 LT |
3475 | struct rpc_message msg = { |
3476 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3477 | .rpc_argp = &args, | |
3478 | .rpc_resp = &res, | |
3479 | .rpc_cred = entry->cred, | |
3480 | }; | |
3481 | int mode = entry->mask; | |
aa9c2669 | 3482 | int status = 0; |
1da177e4 LT |
3483 | |
3484 | /* | |
3485 | * Determine which access bits we want to ask for... | |
3486 | */ | |
3487 | if (mode & MAY_READ) | |
3488 | args.access |= NFS4_ACCESS_READ; | |
3489 | if (S_ISDIR(inode->i_mode)) { | |
3490 | if (mode & MAY_WRITE) | |
3491 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3492 | if (mode & MAY_EXEC) | |
3493 | args.access |= NFS4_ACCESS_LOOKUP; | |
3494 | } else { | |
3495 | if (mode & MAY_WRITE) | |
3496 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3497 | if (mode & MAY_EXEC) | |
3498 | args.access |= NFS4_ACCESS_EXECUTE; | |
3499 | } | |
c407d41a TM |
3500 | |
3501 | res.fattr = nfs_alloc_fattr(); | |
3502 | if (res.fattr == NULL) | |
3503 | return -ENOMEM; | |
3504 | ||
7c513058 | 3505 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3506 | if (!status) { |
6168f62c | 3507 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3508 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3509 | } |
c407d41a | 3510 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3511 | return status; |
3512 | } | |
3513 | ||
3514 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3515 | { | |
3516 | struct nfs4_exception exception = { }; | |
3517 | int err; | |
3518 | do { | |
c1578b76 TM |
3519 | err = _nfs4_proc_access(inode, entry); |
3520 | trace_nfs4_access(inode, err); | |
3521 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3522 | &exception); |
3523 | } while (exception.retry); | |
3524 | return err; | |
3525 | } | |
3526 | ||
3527 | /* | |
3528 | * TODO: For the time being, we don't try to get any attributes | |
3529 | * along with any of the zero-copy operations READ, READDIR, | |
3530 | * READLINK, WRITE. | |
3531 | * | |
3532 | * In the case of the first three, we want to put the GETATTR | |
3533 | * after the read-type operation -- this is because it is hard | |
3534 | * to predict the length of a GETATTR response in v4, and thus | |
3535 | * align the READ data correctly. This means that the GETATTR | |
3536 | * may end up partially falling into the page cache, and we should | |
3537 | * shift it into the 'tail' of the xdr_buf before processing. | |
3538 | * To do this efficiently, we need to know the total length | |
3539 | * of data received, which doesn't seem to be available outside | |
3540 | * of the RPC layer. | |
3541 | * | |
3542 | * In the case of WRITE, we also want to put the GETATTR after | |
3543 | * the operation -- in this case because we want to make sure | |
140150db | 3544 | * we get the post-operation mtime and size. |
1da177e4 LT |
3545 | * |
3546 | * Both of these changes to the XDR layer would in fact be quite | |
3547 | * minor, but I decided to leave them for a subsequent patch. | |
3548 | */ | |
3549 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3550 | unsigned int pgbase, unsigned int pglen) | |
3551 | { | |
3552 | struct nfs4_readlink args = { | |
3553 | .fh = NFS_FH(inode), | |
3554 | .pgbase = pgbase, | |
3555 | .pglen = pglen, | |
3556 | .pages = &page, | |
3557 | }; | |
f50c7000 | 3558 | struct nfs4_readlink_res res; |
1da177e4 LT |
3559 | struct rpc_message msg = { |
3560 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3561 | .rpc_argp = &args, | |
f50c7000 | 3562 | .rpc_resp = &res, |
1da177e4 LT |
3563 | }; |
3564 | ||
7c513058 | 3565 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3566 | } |
3567 | ||
3568 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3569 | unsigned int pgbase, unsigned int pglen) | |
3570 | { | |
3571 | struct nfs4_exception exception = { }; | |
3572 | int err; | |
3573 | do { | |
c1578b76 TM |
3574 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3575 | trace_nfs4_readlink(inode, err); | |
3576 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3577 | &exception); |
3578 | } while (exception.retry); | |
3579 | return err; | |
3580 | } | |
3581 | ||
1da177e4 | 3582 | /* |
8867fe58 | 3583 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3584 | */ |
1da177e4 LT |
3585 | static int |
3586 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3587 | int flags) |
1da177e4 | 3588 | { |
aa9c2669 | 3589 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3590 | struct nfs_open_context *ctx; |
1da177e4 | 3591 | struct nfs4_state *state; |
1da177e4 LT |
3592 | int status = 0; |
3593 | ||
8867fe58 MS |
3594 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3595 | if (IS_ERR(ctx)) | |
3596 | return PTR_ERR(ctx); | |
3597 | ||
aa9c2669 DQ |
3598 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3599 | ||
a8a5da99 | 3600 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3601 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3602 | if (IS_ERR(state)) { |
3603 | status = PTR_ERR(state); | |
c0204fd2 | 3604 | goto out; |
1da177e4 | 3605 | } |
1da177e4 | 3606 | out: |
aa9c2669 | 3607 | nfs4_label_release_security(ilabel); |
8867fe58 | 3608 | put_nfs_open_context(ctx); |
1da177e4 LT |
3609 | return status; |
3610 | } | |
3611 | ||
3612 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3613 | { | |
16e42959 | 3614 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3615 | struct nfs_removeargs args = { |
1da177e4 | 3616 | .fh = NFS_FH(dir), |
26fe5750 | 3617 | .name = *name, |
16e42959 | 3618 | }; |
4fdc17b2 | 3619 | struct nfs_removeres res = { |
16e42959 | 3620 | .server = server, |
1da177e4 | 3621 | }; |
1da177e4 | 3622 | struct rpc_message msg = { |
4fdc17b2 TM |
3623 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3624 | .rpc_argp = &args, | |
3625 | .rpc_resp = &res, | |
1da177e4 | 3626 | }; |
778d2817 | 3627 | int status; |
1da177e4 | 3628 | |
7c513058 | 3629 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3630 | if (status == 0) |
16e42959 | 3631 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3632 | return status; |
3633 | } | |
3634 | ||
3635 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3636 | { | |
3637 | struct nfs4_exception exception = { }; | |
3638 | int err; | |
3639 | do { | |
078ea3df TM |
3640 | err = _nfs4_proc_remove(dir, name); |
3641 | trace_nfs4_remove(dir, name, err); | |
3642 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3643 | &exception); |
3644 | } while (exception.retry); | |
3645 | return err; | |
3646 | } | |
3647 | ||
e4eff1a6 | 3648 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3649 | { |
e4eff1a6 TM |
3650 | struct nfs_server *server = NFS_SERVER(dir); |
3651 | struct nfs_removeargs *args = msg->rpc_argp; | |
3652 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3653 | |
e4eff1a6 | 3654 | res->server = server; |
1da177e4 | 3655 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3656 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3657 | |
3658 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3659 | } |
3660 | ||
34e137cc BS |
3661 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3662 | { | |
d9afbd1b TM |
3663 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3664 | &data->args.seq_args, | |
3665 | &data->res.seq_res, | |
3666 | task); | |
1da177e4 LT |
3667 | } |
3668 | ||
e4eff1a6 | 3669 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3670 | { |
078ea3df TM |
3671 | struct nfs_unlinkdata *data = task->tk_calldata; |
3672 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3673 | |
14516c3a TM |
3674 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3675 | return 0; | |
8478eaa1 N |
3676 | if (nfs4_async_handle_error(task, res->server, NULL, |
3677 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3678 | return 0; |
3679 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3680 | return 1; |
1da177e4 LT |
3681 | } |
3682 | ||
d3d4152a JL |
3683 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3684 | { | |
3685 | struct nfs_server *server = NFS_SERVER(dir); | |
3686 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3687 | struct nfs_renameres *res = msg->rpc_resp; | |
3688 | ||
3689 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3690 | res->server = server; |
a9c92d6b | 3691 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3692 | } |
3693 | ||
c6bfa1a1 BS |
3694 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3695 | { | |
d9afbd1b TM |
3696 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3697 | &data->args.seq_args, | |
3698 | &data->res.seq_res, | |
3699 | task); | |
d3d4152a JL |
3700 | } |
3701 | ||
3702 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3703 | struct inode *new_dir) | |
3704 | { | |
fbc6f7c2 TM |
3705 | struct nfs_renamedata *data = task->tk_calldata; |
3706 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3707 | |
3708 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3709 | return 0; | |
8478eaa1 | 3710 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3711 | return 0; |
3712 | ||
3713 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3714 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3715 | return 1; |
3716 | } | |
3717 | ||
1da177e4 LT |
3718 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3719 | { | |
91ba2eee | 3720 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3721 | struct nfs4_link_arg arg = { |
3722 | .fh = NFS_FH(inode), | |
3723 | .dir_fh = NFS_FH(dir), | |
3724 | .name = name, | |
91ba2eee TM |
3725 | .bitmask = server->attr_bitmask, |
3726 | }; | |
91ba2eee TM |
3727 | struct nfs4_link_res res = { |
3728 | .server = server, | |
1775fd3e | 3729 | .label = NULL, |
1da177e4 | 3730 | }; |
1da177e4 LT |
3731 | struct rpc_message msg = { |
3732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3733 | .rpc_argp = &arg, | |
91ba2eee | 3734 | .rpc_resp = &res, |
1da177e4 | 3735 | }; |
136f2627 TM |
3736 | int status = -ENOMEM; |
3737 | ||
3738 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3739 | if (res.fattr == NULL) |
136f2627 | 3740 | goto out; |
1da177e4 | 3741 | |
14c43f76 DQ |
3742 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3743 | if (IS_ERR(res.label)) { | |
3744 | status = PTR_ERR(res.label); | |
3745 | goto out; | |
3746 | } | |
aa9c2669 | 3747 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3748 | |
7c513058 | 3749 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3750 | if (!status) { |
3751 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3752 | status = nfs_post_op_update_inode(inode, res.fattr); |
3753 | if (!status) | |
3754 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3755 | } |
14c43f76 DQ |
3756 | |
3757 | ||
3758 | nfs4_label_free(res.label); | |
3759 | ||
136f2627 | 3760 | out: |
136f2627 | 3761 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3762 | return status; |
3763 | } | |
3764 | ||
3765 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3766 | { | |
3767 | struct nfs4_exception exception = { }; | |
3768 | int err; | |
3769 | do { | |
3770 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3771 | _nfs4_proc_link(inode, dir, name), | |
3772 | &exception); | |
3773 | } while (exception.retry); | |
3774 | return err; | |
3775 | } | |
3776 | ||
57dc9a57 TM |
3777 | struct nfs4_createdata { |
3778 | struct rpc_message msg; | |
3779 | struct nfs4_create_arg arg; | |
3780 | struct nfs4_create_res res; | |
3781 | struct nfs_fh fh; | |
3782 | struct nfs_fattr fattr; | |
1775fd3e | 3783 | struct nfs4_label *label; |
57dc9a57 TM |
3784 | }; |
3785 | ||
3786 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3787 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3788 | { | |
3789 | struct nfs4_createdata *data; | |
3790 | ||
3791 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3792 | if (data != NULL) { | |
3793 | struct nfs_server *server = NFS_SERVER(dir); | |
3794 | ||
14c43f76 DQ |
3795 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3796 | if (IS_ERR(data->label)) | |
3797 | goto out_free; | |
3798 | ||
57dc9a57 TM |
3799 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3800 | data->msg.rpc_argp = &data->arg; | |
3801 | data->msg.rpc_resp = &data->res; | |
3802 | data->arg.dir_fh = NFS_FH(dir); | |
3803 | data->arg.server = server; | |
3804 | data->arg.name = name; | |
3805 | data->arg.attrs = sattr; | |
3806 | data->arg.ftype = ftype; | |
aa9c2669 | 3807 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3808 | data->res.server = server; |
3809 | data->res.fh = &data->fh; | |
3810 | data->res.fattr = &data->fattr; | |
1775fd3e | 3811 | data->res.label = data->label; |
57dc9a57 | 3812 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3813 | } |
3814 | return data; | |
14c43f76 DQ |
3815 | out_free: |
3816 | kfree(data); | |
3817 | return NULL; | |
57dc9a57 TM |
3818 | } |
3819 | ||
3820 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3821 | { | |
7c513058 | 3822 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3823 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3824 | if (status == 0) { |
3825 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3826 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3827 | } |
3828 | return status; | |
3829 | } | |
3830 | ||
3831 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3832 | { | |
14c43f76 | 3833 | nfs4_label_free(data->label); |
57dc9a57 TM |
3834 | kfree(data); |
3835 | } | |
3836 | ||
4f390c15 | 3837 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3838 | struct page *page, unsigned int len, struct iattr *sattr, |
3839 | struct nfs4_label *label) | |
1da177e4 | 3840 | { |
57dc9a57 TM |
3841 | struct nfs4_createdata *data; |
3842 | int status = -ENAMETOOLONG; | |
1da177e4 | 3843 | |
94a6d753 | 3844 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3845 | goto out; |
4f390c15 | 3846 | |
57dc9a57 TM |
3847 | status = -ENOMEM; |
3848 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3849 | if (data == NULL) | |
3850 | goto out; | |
3851 | ||
3852 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3853 | data->arg.u.symlink.pages = &page; | |
3854 | data->arg.u.symlink.len = len; | |
1775fd3e | 3855 | data->arg.label = label; |
1da177e4 | 3856 | |
57dc9a57 TM |
3857 | status = nfs4_do_create(dir, dentry, data); |
3858 | ||
3859 | nfs4_free_createdata(data); | |
3860 | out: | |
1da177e4 LT |
3861 | return status; |
3862 | } | |
3863 | ||
4f390c15 | 3864 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3865 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3866 | { |
3867 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3868 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3869 | int err; |
aa9c2669 DQ |
3870 | |
3871 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
3872 | ||
1da177e4 | 3873 | do { |
078ea3df TM |
3874 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
3875 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
3876 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3877 | &exception); |
3878 | } while (exception.retry); | |
aa9c2669 DQ |
3879 | |
3880 | nfs4_label_release_security(label); | |
1da177e4 LT |
3881 | return err; |
3882 | } | |
3883 | ||
3884 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 3885 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 3886 | { |
57dc9a57 TM |
3887 | struct nfs4_createdata *data; |
3888 | int status = -ENOMEM; | |
1da177e4 | 3889 | |
57dc9a57 TM |
3890 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3891 | if (data == NULL) | |
3892 | goto out; | |
3893 | ||
1775fd3e | 3894 | data->arg.label = label; |
57dc9a57 TM |
3895 | status = nfs4_do_create(dir, dentry, data); |
3896 | ||
3897 | nfs4_free_createdata(data); | |
3898 | out: | |
1da177e4 LT |
3899 | return status; |
3900 | } | |
3901 | ||
3902 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3903 | struct iattr *sattr) | |
3904 | { | |
3905 | struct nfs4_exception exception = { }; | |
aa9c2669 | 3906 | struct nfs4_label l, *label = NULL; |
1da177e4 | 3907 | int err; |
a8a5da99 | 3908 | |
aa9c2669 DQ |
3909 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
3910 | ||
a8a5da99 | 3911 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 3912 | do { |
078ea3df TM |
3913 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
3914 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
3915 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3916 | &exception); |
3917 | } while (exception.retry); | |
aa9c2669 DQ |
3918 | nfs4_label_release_security(label); |
3919 | ||
1da177e4 LT |
3920 | return err; |
3921 | } | |
3922 | ||
3923 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3924 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 3925 | { |
2b0143b5 | 3926 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
3927 | struct nfs4_readdir_arg args = { |
3928 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3929 | .pages = pages, |
1da177e4 LT |
3930 | .pgbase = 0, |
3931 | .count = count, | |
2b0143b5 | 3932 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 3933 | .plus = plus, |
1da177e4 LT |
3934 | }; |
3935 | struct nfs4_readdir_res res; | |
3936 | struct rpc_message msg = { | |
3937 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3938 | .rpc_argp = &args, | |
3939 | .rpc_resp = &res, | |
3940 | .rpc_cred = cred, | |
3941 | }; | |
3942 | int status; | |
3943 | ||
6de1472f AV |
3944 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
3945 | dentry, | |
eadf4598 | 3946 | (unsigned long long)cookie); |
c3f52af3 | 3947 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3948 | res.pgbase = args.pgbase; |
7c513058 | 3949 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3950 | if (status >= 0) { |
c3f52af3 | 3951 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3952 | status += args.pgbase; |
3953 | } | |
c4812998 TM |
3954 | |
3955 | nfs_invalidate_atime(dir); | |
3956 | ||
3110ff80 | 3957 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3958 | return status; |
3959 | } | |
3960 | ||
3961 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3962 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3963 | { |
3964 | struct nfs4_exception exception = { }; | |
3965 | int err; | |
3966 | do { | |
c1578b76 TM |
3967 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
3968 | pages, count, plus); | |
2b0143b5 DH |
3969 | trace_nfs4_readdir(d_inode(dentry), err); |
3970 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
3971 | &exception); |
3972 | } while (exception.retry); | |
3973 | return err; | |
3974 | } | |
3975 | ||
3976 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 3977 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 3978 | { |
57dc9a57 TM |
3979 | struct nfs4_createdata *data; |
3980 | int mode = sattr->ia_mode; | |
3981 | int status = -ENOMEM; | |
1da177e4 | 3982 | |
57dc9a57 TM |
3983 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3984 | if (data == NULL) | |
3985 | goto out; | |
3986 | ||
1da177e4 | 3987 | if (S_ISFIFO(mode)) |
57dc9a57 | 3988 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3989 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3990 | data->arg.ftype = NF4BLK; |
3991 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3992 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3993 | } |
3994 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3995 | data->arg.ftype = NF4CHR; |
3996 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3997 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3998 | } else if (!S_ISSOCK(mode)) { |
3999 | status = -EINVAL; | |
4000 | goto out_free; | |
1da177e4 | 4001 | } |
1775fd3e | 4002 | |
aa9c2669 | 4003 | data->arg.label = label; |
57dc9a57 | 4004 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4005 | out_free: |
57dc9a57 TM |
4006 | nfs4_free_createdata(data); |
4007 | out: | |
1da177e4 LT |
4008 | return status; |
4009 | } | |
4010 | ||
4011 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4012 | struct iattr *sattr, dev_t rdev) | |
4013 | { | |
4014 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4015 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4016 | int err; |
a8a5da99 | 4017 | |
aa9c2669 DQ |
4018 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4019 | ||
a8a5da99 | 4020 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4021 | do { |
078ea3df TM |
4022 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4023 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4024 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4025 | &exception); |
4026 | } while (exception.retry); | |
aa9c2669 DQ |
4027 | |
4028 | nfs4_label_release_security(label); | |
4029 | ||
1da177e4 LT |
4030 | return err; |
4031 | } | |
4032 | ||
4033 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4034 | struct nfs_fsstat *fsstat) | |
4035 | { | |
4036 | struct nfs4_statfs_arg args = { | |
4037 | .fh = fhandle, | |
4038 | .bitmask = server->attr_bitmask, | |
4039 | }; | |
24ad148a BH |
4040 | struct nfs4_statfs_res res = { |
4041 | .fsstat = fsstat, | |
4042 | }; | |
1da177e4 LT |
4043 | struct rpc_message msg = { |
4044 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4045 | .rpc_argp = &args, | |
24ad148a | 4046 | .rpc_resp = &res, |
1da177e4 LT |
4047 | }; |
4048 | ||
0e574af1 | 4049 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4050 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4051 | } |
4052 | ||
4053 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4054 | { | |
4055 | struct nfs4_exception exception = { }; | |
4056 | int err; | |
4057 | do { | |
4058 | err = nfs4_handle_exception(server, | |
4059 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4060 | &exception); | |
4061 | } while (exception.retry); | |
4062 | return err; | |
4063 | } | |
4064 | ||
4065 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4066 | struct nfs_fsinfo *fsinfo) | |
4067 | { | |
4068 | struct nfs4_fsinfo_arg args = { | |
4069 | .fh = fhandle, | |
4070 | .bitmask = server->attr_bitmask, | |
4071 | }; | |
3dda5e43 BH |
4072 | struct nfs4_fsinfo_res res = { |
4073 | .fsinfo = fsinfo, | |
4074 | }; | |
1da177e4 LT |
4075 | struct rpc_message msg = { |
4076 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4077 | .rpc_argp = &args, | |
3dda5e43 | 4078 | .rpc_resp = &res, |
1da177e4 LT |
4079 | }; |
4080 | ||
7c513058 | 4081 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4082 | } |
4083 | ||
4084 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4085 | { | |
4086 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4087 | unsigned long now = jiffies; |
1da177e4 LT |
4088 | int err; |
4089 | ||
4090 | do { | |
83ca7f5a | 4091 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4092 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4093 | if (err == 0) { |
4094 | struct nfs_client *clp = server->nfs_client; | |
4095 | ||
4096 | spin_lock(&clp->cl_lock); | |
4097 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4098 | clp->cl_last_renewal = now; | |
4099 | spin_unlock(&clp->cl_lock); | |
4100 | break; | |
4101 | } | |
4102 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4103 | } while (exception.retry); |
4104 | return err; | |
4105 | } | |
4106 | ||
4107 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4108 | { | |
e38eb650 BS |
4109 | int error; |
4110 | ||
0e574af1 | 4111 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4112 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4113 | if (error == 0) { |
4114 | /* block layout checks this! */ | |
4115 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4116 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4117 | } |
e38eb650 BS |
4118 | |
4119 | return error; | |
1da177e4 LT |
4120 | } |
4121 | ||
4122 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4123 | struct nfs_pathconf *pathconf) | |
4124 | { | |
4125 | struct nfs4_pathconf_arg args = { | |
4126 | .fh = fhandle, | |
4127 | .bitmask = server->attr_bitmask, | |
4128 | }; | |
d45b2989 BH |
4129 | struct nfs4_pathconf_res res = { |
4130 | .pathconf = pathconf, | |
4131 | }; | |
1da177e4 LT |
4132 | struct rpc_message msg = { |
4133 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4134 | .rpc_argp = &args, | |
d45b2989 | 4135 | .rpc_resp = &res, |
1da177e4 LT |
4136 | }; |
4137 | ||
4138 | /* None of the pathconf attributes are mandatory to implement */ | |
4139 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4140 | memset(pathconf, 0, sizeof(*pathconf)); | |
4141 | return 0; | |
4142 | } | |
4143 | ||
0e574af1 | 4144 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4145 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4146 | } |
4147 | ||
4148 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4149 | struct nfs_pathconf *pathconf) | |
4150 | { | |
4151 | struct nfs4_exception exception = { }; | |
4152 | int err; | |
4153 | ||
4154 | do { | |
4155 | err = nfs4_handle_exception(server, | |
4156 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4157 | &exception); | |
4158 | } while (exception.retry); | |
4159 | return err; | |
4160 | } | |
4161 | ||
5521abfd | 4162 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4163 | const struct nfs_open_context *ctx, |
4164 | const struct nfs_lock_context *l_ctx, | |
4165 | fmode_t fmode) | |
4166 | { | |
4167 | const struct nfs_lockowner *lockowner = NULL; | |
4168 | ||
4169 | if (l_ctx != NULL) | |
4170 | lockowner = &l_ctx->lockowner; | |
5521abfd | 4171 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
4172 | } |
4173 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4174 | ||
5521abfd TM |
4175 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4176 | const struct nfs_open_context *ctx, | |
4177 | const struct nfs_lock_context *l_ctx, | |
4178 | fmode_t fmode) | |
4179 | { | |
4180 | nfs4_stateid current_stateid; | |
4181 | ||
e1253be0 TM |
4182 | /* If the current stateid represents a lost lock, then exit */ |
4183 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4184 | return true; | |
5521abfd TM |
4185 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4186 | } | |
4187 | ||
4188 | static bool nfs4_error_stateid_expired(int err) | |
4189 | { | |
4190 | switch (err) { | |
4191 | case -NFS4ERR_DELEG_REVOKED: | |
4192 | case -NFS4ERR_ADMIN_REVOKED: | |
4193 | case -NFS4ERR_BAD_STATEID: | |
4194 | case -NFS4ERR_STALE_STATEID: | |
4195 | case -NFS4ERR_OLD_STATEID: | |
4196 | case -NFS4ERR_OPENMODE: | |
4197 | case -NFS4ERR_EXPIRED: | |
4198 | return true; | |
4199 | } | |
4200 | return false; | |
4201 | } | |
4202 | ||
d45f60c6 | 4203 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4204 | { |
d45f60c6 | 4205 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4206 | } |
4207 | ||
d45f60c6 | 4208 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4209 | { |
d45f60c6 | 4210 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4211 | |
d45f60c6 WAA |
4212 | trace_nfs4_read(hdr, task->tk_status); |
4213 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4214 | hdr->args.context->state, |
4215 | NULL) == -EAGAIN) { | |
d00c5d43 | 4216 | rpc_restart_call_prepare(task); |
ec06c096 | 4217 | return -EAGAIN; |
1da177e4 | 4218 | } |
8850df99 | 4219 | |
d45f60c6 | 4220 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4221 | if (task->tk_status > 0) |
d45f60c6 | 4222 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4223 | return 0; |
1da177e4 LT |
4224 | } |
4225 | ||
5521abfd | 4226 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4227 | struct nfs_pgio_args *args) |
5521abfd TM |
4228 | { |
4229 | ||
4230 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4231 | nfs4_stateid_is_current(&args->stateid, | |
4232 | args->context, | |
4233 | args->lock_context, | |
4234 | FMODE_READ)) | |
4235 | return false; | |
4236 | rpc_restart_call_prepare(task); | |
4237 | return true; | |
4238 | } | |
4239 | ||
d45f60c6 | 4240 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4241 | { |
4242 | ||
4243 | dprintk("--> %s\n", __func__); | |
4244 | ||
d45f60c6 | 4245 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4246 | return -EAGAIN; |
d45f60c6 | 4247 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4248 | return -EAGAIN; |
d45f60c6 WAA |
4249 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4250 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4251 | } |
4252 | ||
d45f60c6 WAA |
4253 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4254 | struct rpc_message *msg) | |
1da177e4 | 4255 | { |
d45f60c6 WAA |
4256 | hdr->timestamp = jiffies; |
4257 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4258 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4259 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4260 | } |
4261 | ||
d45f60c6 WAA |
4262 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4263 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4264 | { |
d45f60c6 WAA |
4265 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4266 | &hdr->args.seq_args, | |
4267 | &hdr->res.seq_res, | |
9b206149 | 4268 | task)) |
ef1820f9 | 4269 | return 0; |
d45f60c6 WAA |
4270 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4271 | hdr->args.lock_context, | |
4272 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4273 | return -EIO; |
d45f60c6 | 4274 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4275 | return -EIO; |
4276 | return 0; | |
1da177e4 LT |
4277 | } |
4278 | ||
d45f60c6 WAA |
4279 | static int nfs4_write_done_cb(struct rpc_task *task, |
4280 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4281 | { |
d45f60c6 | 4282 | struct inode *inode = hdr->inode; |
8478eaa1 | 4283 | |
d45f60c6 WAA |
4284 | trace_nfs4_write(hdr, task->tk_status); |
4285 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4286 | hdr->args.context->state, |
4287 | NULL) == -EAGAIN) { | |
d00c5d43 | 4288 | rpc_restart_call_prepare(task); |
788e7a89 | 4289 | return -EAGAIN; |
1da177e4 | 4290 | } |
4f9838c7 | 4291 | if (task->tk_status >= 0) { |
d45f60c6 | 4292 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4293 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4294 | } |
788e7a89 | 4295 | return 0; |
1da177e4 LT |
4296 | } |
4297 | ||
5521abfd | 4298 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4299 | struct nfs_pgio_args *args) |
5521abfd TM |
4300 | { |
4301 | ||
4302 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4303 | nfs4_stateid_is_current(&args->stateid, | |
4304 | args->context, | |
4305 | args->lock_context, | |
4306 | FMODE_WRITE)) | |
4307 | return false; | |
4308 | rpc_restart_call_prepare(task); | |
4309 | return true; | |
4310 | } | |
4311 | ||
d45f60c6 | 4312 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4313 | { |
d45f60c6 | 4314 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4315 | return -EAGAIN; |
d45f60c6 | 4316 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4317 | return -EAGAIN; |
d45f60c6 WAA |
4318 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4319 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4320 | } |
4321 | ||
5a37f851 | 4322 | static |
d45f60c6 | 4323 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4324 | { |
5a37f851 | 4325 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4326 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4327 | return false; |
4328 | /* Otherwise, request attributes if and only if we don't hold | |
4329 | * a delegation | |
4330 | */ | |
011e2a7f | 4331 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4332 | } |
a69aef14 | 4333 | |
d45f60c6 WAA |
4334 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4335 | struct rpc_message *msg) | |
1da177e4 | 4336 | { |
d45f60c6 | 4337 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4338 | |
d45f60c6 WAA |
4339 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4340 | hdr->args.bitmask = NULL; | |
4341 | hdr->res.fattr = NULL; | |
7ffd1064 | 4342 | } else |
d45f60c6 | 4343 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4344 | |
d45f60c6 WAA |
4345 | if (!hdr->pgio_done_cb) |
4346 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4347 | hdr->res.server = server; | |
4348 | hdr->timestamp = jiffies; | |
1da177e4 | 4349 | |
bdc7f021 | 4350 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4351 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4352 | } |
4353 | ||
0b7c0153 | 4354 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4355 | { |
d9afbd1b TM |
4356 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4357 | &data->args.seq_args, | |
4358 | &data->res.seq_res, | |
4359 | task); | |
1da177e4 LT |
4360 | } |
4361 | ||
0b7c0153 | 4362 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4363 | { |
1da177e4 | 4364 | struct inode *inode = data->inode; |
14516c3a | 4365 | |
cc668ab3 | 4366 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4367 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4368 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4369 | rpc_restart_call_prepare(task); |
788e7a89 | 4370 | return -EAGAIN; |
1da177e4 | 4371 | } |
788e7a89 | 4372 | return 0; |
1da177e4 LT |
4373 | } |
4374 | ||
0b7c0153 | 4375 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4376 | { |
4377 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4378 | return -EAGAIN; | |
0b7c0153 | 4379 | return data->commit_done_cb(task, data); |
5f452431 FI |
4380 | } |
4381 | ||
0b7c0153 | 4382 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4383 | { |
788e7a89 | 4384 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4385 | |
0b7c0153 FI |
4386 | if (data->commit_done_cb == NULL) |
4387 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4388 | data->res.server = server; |
bdc7f021 | 4389 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4390 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4391 | } |
4392 | ||
9bc4e3ca CL |
4393 | struct nfs4_renewdata { |
4394 | struct nfs_client *client; | |
4395 | unsigned long timestamp; | |
4396 | }; | |
4397 | ||
1da177e4 LT |
4398 | /* |
4399 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4400 | * standalone procedure for queueing an asynchronous RENEW. | |
4401 | */ | |
9bc4e3ca | 4402 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4403 | { |
9bc4e3ca CL |
4404 | struct nfs4_renewdata *data = calldata; |
4405 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4406 | |
0851de06 AB |
4407 | if (atomic_read(&clp->cl_count) > 1) |
4408 | nfs4_schedule_state_renewal(clp); | |
4409 | nfs_put_client(clp); | |
9bc4e3ca | 4410 | kfree(data); |
dc96aef9 AB |
4411 | } |
4412 | ||
9bc4e3ca | 4413 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4414 | { |
9bc4e3ca CL |
4415 | struct nfs4_renewdata *data = calldata; |
4416 | struct nfs_client *clp = data->client; | |
4417 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4418 | |
c6d01c6f | 4419 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4420 | switch (task->tk_status) { |
4421 | case 0: | |
4422 | break; | |
4423 | case -NFS4ERR_LEASE_MOVED: | |
4424 | nfs4_schedule_lease_moved_recovery(clp); | |
4425 | break; | |
4426 | default: | |
95baa25c | 4427 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4428 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4429 | return; | |
4430 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4431 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4432 | return; |
4433 | } | |
4434 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4435 | } |
452e9352 | 4436 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4437 | } |
4438 | ||
963d8fe5 TM |
4439 | static const struct rpc_call_ops nfs4_renew_ops = { |
4440 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4441 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4442 | }; |
4443 | ||
2f60ea6b | 4444 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4445 | { |
4446 | struct rpc_message msg = { | |
4447 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4448 | .rpc_argp = clp, | |
b4454fe1 | 4449 | .rpc_cred = cred, |
1da177e4 | 4450 | }; |
9bc4e3ca | 4451 | struct nfs4_renewdata *data; |
1da177e4 | 4452 | |
2f60ea6b TM |
4453 | if (renew_flags == 0) |
4454 | return 0; | |
0851de06 AB |
4455 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4456 | return -EIO; | |
b569ad34 | 4457 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4458 | if (data == NULL) |
4459 | return -ENOMEM; | |
4460 | data->client = clp; | |
4461 | data->timestamp = jiffies; | |
bc7a05ca | 4462 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4463 | &nfs4_renew_ops, data); |
1da177e4 LT |
4464 | } |
4465 | ||
8534d4ec | 4466 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4467 | { |
4468 | struct rpc_message msg = { | |
4469 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4470 | .rpc_argp = clp, | |
b4454fe1 | 4471 | .rpc_cred = cred, |
1da177e4 LT |
4472 | }; |
4473 | unsigned long now = jiffies; | |
4474 | int status; | |
4475 | ||
bc7a05ca | 4476 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4477 | if (status < 0) |
4478 | return status; | |
452e9352 | 4479 | do_renew_lease(clp, now); |
1da177e4 LT |
4480 | return 0; |
4481 | } | |
4482 | ||
aa1870af BF |
4483 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4484 | { | |
7dd7d959 | 4485 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4486 | } |
4487 | ||
21f498c2 TM |
4488 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4489 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4490 | * the stack. |
4491 | */ | |
21f498c2 | 4492 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4493 | |
e9e3d724 NH |
4494 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
4495 | struct page **pages, unsigned int *pgbase) | |
4496 | { | |
4497 | struct page *newpage, **spages; | |
4498 | int rc = 0; | |
4499 | size_t len; | |
4500 | spages = pages; | |
4501 | ||
4502 | do { | |
21f498c2 | 4503 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4504 | newpage = alloc_page(GFP_KERNEL); |
4505 | ||
4506 | if (newpage == NULL) | |
4507 | goto unwind; | |
4508 | memcpy(page_address(newpage), buf, len); | |
4509 | buf += len; | |
4510 | buflen -= len; | |
4511 | *pages++ = newpage; | |
4512 | rc++; | |
4513 | } while (buflen != 0); | |
4514 | ||
4515 | return rc; | |
4516 | ||
4517 | unwind: | |
4518 | for(; rc > 0; rc--) | |
4519 | __free_page(spages[rc-1]); | |
4520 | return -ENOMEM; | |
4521 | } | |
4522 | ||
e50a1c2e BF |
4523 | struct nfs4_cached_acl { |
4524 | int cached; | |
4525 | size_t len; | |
3e9d4154 | 4526 | char data[0]; |
e50a1c2e BF |
4527 | }; |
4528 | ||
4529 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4530 | { | |
4531 | struct nfs_inode *nfsi = NFS_I(inode); | |
4532 | ||
4533 | spin_lock(&inode->i_lock); | |
4534 | kfree(nfsi->nfs4_acl); | |
4535 | nfsi->nfs4_acl = acl; | |
4536 | spin_unlock(&inode->i_lock); | |
4537 | } | |
4538 | ||
4539 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4540 | { | |
4541 | nfs4_set_cached_acl(inode, NULL); | |
4542 | } | |
4543 | ||
4544 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4545 | { | |
4546 | struct nfs_inode *nfsi = NFS_I(inode); | |
4547 | struct nfs4_cached_acl *acl; | |
4548 | int ret = -ENOENT; | |
4549 | ||
4550 | spin_lock(&inode->i_lock); | |
4551 | acl = nfsi->nfs4_acl; | |
4552 | if (acl == NULL) | |
4553 | goto out; | |
4554 | if (buf == NULL) /* user is just asking for length */ | |
4555 | goto out_len; | |
4556 | if (acl->cached == 0) | |
4557 | goto out; | |
4558 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4559 | if (acl->len > buflen) | |
4560 | goto out; | |
4561 | memcpy(buf, acl->data, acl->len); | |
4562 | out_len: | |
4563 | ret = acl->len; | |
4564 | out: | |
4565 | spin_unlock(&inode->i_lock); | |
4566 | return ret; | |
4567 | } | |
4568 | ||
5794d21e | 4569 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4570 | { |
4571 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4572 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4573 | |
1f1ea6c2 | 4574 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4575 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4576 | if (acl == NULL) |
4577 | goto out; | |
4578 | acl->cached = 1; | |
5794d21e | 4579 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4580 | } else { |
4581 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4582 | if (acl == NULL) | |
4583 | goto out; | |
4584 | acl->cached = 0; | |
4585 | } | |
4586 | acl->len = acl_len; | |
4587 | out: | |
4588 | nfs4_set_cached_acl(inode, acl); | |
4589 | } | |
4590 | ||
bf118a34 AA |
4591 | /* |
4592 | * The getxattr API returns the required buffer length when called with a | |
4593 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4594 | * the required buf. On a NULL buf, we send a page of data to the server | |
4595 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4596 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4597 | * the cache. If not so, we throw away the page, and cache the required | |
4598 | * length. The next getxattr call will then produce another round trip to | |
4599 | * the server, this time with the input buf of the required size. | |
4600 | */ | |
16b4289c | 4601 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4602 | { |
bf118a34 | 4603 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4604 | struct nfs_getaclargs args = { |
4605 | .fh = NFS_FH(inode), | |
4606 | .acl_pages = pages, | |
4607 | .acl_len = buflen, | |
4608 | }; | |
663c79b3 BH |
4609 | struct nfs_getaclres res = { |
4610 | .acl_len = buflen, | |
4611 | }; | |
aa1870af BF |
4612 | struct rpc_message msg = { |
4613 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4614 | .rpc_argp = &args, | |
663c79b3 | 4615 | .rpc_resp = &res, |
aa1870af | 4616 | }; |
21f498c2 TM |
4617 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4618 | int ret = -ENOMEM, i; | |
aa1870af | 4619 | |
bf118a34 AA |
4620 | /* As long as we're doing a round trip to the server anyway, |
4621 | * let's be prepared for a page of acl data. */ | |
4622 | if (npages == 0) | |
4623 | npages = 1; | |
21f498c2 TM |
4624 | if (npages > ARRAY_SIZE(pages)) |
4625 | return -ERANGE; | |
5a006899 | 4626 | |
bf118a34 AA |
4627 | for (i = 0; i < npages; i++) { |
4628 | pages[i] = alloc_page(GFP_KERNEL); | |
4629 | if (!pages[i]) | |
4630 | goto out_free; | |
e50a1c2e | 4631 | } |
5a006899 SP |
4632 | |
4633 | /* for decoding across pages */ | |
4634 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4635 | if (!res.acl_scratch) | |
4636 | goto out_free; | |
4637 | ||
bf118a34 AA |
4638 | args.acl_len = npages * PAGE_SIZE; |
4639 | args.acl_pgbase = 0; | |
5a006899 | 4640 | |
de040bec | 4641 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4642 | __func__, buf, buflen, npages, args.acl_len); |
4643 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4644 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4645 | if (ret) |
4646 | goto out_free; | |
bf118a34 | 4647 | |
1f1ea6c2 TM |
4648 | /* Handle the case where the passed-in buffer is too short */ |
4649 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4650 | /* Did the user only issue a request for the acl length? */ | |
4651 | if (buf == NULL) | |
4652 | goto out_ok; | |
e50a1c2e | 4653 | ret = -ERANGE; |
1f1ea6c2 | 4654 | goto out_free; |
e50a1c2e | 4655 | } |
1f1ea6c2 | 4656 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4657 | if (buf) { |
4658 | if (res.acl_len > buflen) { | |
4659 | ret = -ERANGE; | |
4660 | goto out_free; | |
4661 | } | |
1f1ea6c2 | 4662 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4663 | } |
1f1ea6c2 TM |
4664 | out_ok: |
4665 | ret = res.acl_len; | |
e50a1c2e | 4666 | out_free: |
bf118a34 AA |
4667 | for (i = 0; i < npages; i++) |
4668 | if (pages[i]) | |
4669 | __free_page(pages[i]); | |
331818f1 TM |
4670 | if (res.acl_scratch) |
4671 | __free_page(res.acl_scratch); | |
aa1870af BF |
4672 | return ret; |
4673 | } | |
4674 | ||
16b4289c TM |
4675 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4676 | { | |
4677 | struct nfs4_exception exception = { }; | |
4678 | ssize_t ret; | |
4679 | do { | |
4680 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4681 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4682 | if (ret >= 0) |
4683 | break; | |
4684 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4685 | } while (exception.retry); | |
4686 | return ret; | |
4687 | } | |
4688 | ||
e50a1c2e BF |
4689 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4690 | { | |
4691 | struct nfs_server *server = NFS_SERVER(inode); | |
4692 | int ret; | |
4693 | ||
4694 | if (!nfs4_server_supports_acls(server)) | |
4695 | return -EOPNOTSUPP; | |
4696 | ret = nfs_revalidate_inode(server, inode); | |
4697 | if (ret < 0) | |
4698 | return ret; | |
08a22b39 AK |
4699 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4700 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4701 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4702 | if (ret != -ENOENT) | |
bf118a34 AA |
4703 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4704 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4705 | return ret; |
4706 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4707 | } | |
4708 | ||
16b4289c | 4709 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4710 | { |
4711 | struct nfs_server *server = NFS_SERVER(inode); | |
4712 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4713 | struct nfs_setaclargs arg = { | |
4714 | .fh = NFS_FH(inode), | |
4715 | .acl_pages = pages, | |
4716 | .acl_len = buflen, | |
4717 | }; | |
73c403a9 | 4718 | struct nfs_setaclres res; |
4b580ee3 BF |
4719 | struct rpc_message msg = { |
4720 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4721 | .rpc_argp = &arg, | |
73c403a9 | 4722 | .rpc_resp = &res, |
4b580ee3 | 4723 | }; |
21f498c2 | 4724 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4725 | int ret, i; |
4b580ee3 BF |
4726 | |
4727 | if (!nfs4_server_supports_acls(server)) | |
4728 | return -EOPNOTSUPP; | |
21f498c2 TM |
4729 | if (npages > ARRAY_SIZE(pages)) |
4730 | return -ERANGE; | |
e9e3d724 NH |
4731 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4732 | if (i < 0) | |
4733 | return i; | |
57ec14c5 | 4734 | nfs4_inode_return_delegation(inode); |
7c513058 | 4735 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4736 | |
4737 | /* | |
4738 | * Free each page after tx, so the only ref left is | |
4739 | * held by the network stack | |
4740 | */ | |
4741 | for (; i > 0; i--) | |
4742 | put_page(pages[i-1]); | |
4743 | ||
08a22b39 AK |
4744 | /* |
4745 | * Acl update can result in inode attribute update. | |
4746 | * so mark the attribute cache invalid. | |
4747 | */ | |
4748 | spin_lock(&inode->i_lock); | |
4749 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4750 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4751 | nfs_access_zap_cache(inode); |
4752 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4753 | return ret; |
4754 | } | |
4755 | ||
16b4289c TM |
4756 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4757 | { | |
4758 | struct nfs4_exception exception = { }; | |
4759 | int err; | |
4760 | do { | |
c1578b76 TM |
4761 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4762 | trace_nfs4_set_acl(inode, err); | |
4763 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4764 | &exception); |
4765 | } while (exception.retry); | |
4766 | return err; | |
4767 | } | |
4768 | ||
aa9c2669 DQ |
4769 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4770 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4771 | size_t buflen) | |
4772 | { | |
4773 | struct nfs_server *server = NFS_SERVER(inode); | |
4774 | struct nfs_fattr fattr; | |
4775 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4776 | ||
4777 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4778 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4779 | .fh = NFS_FH(inode), |
4780 | .bitmask = bitmask, | |
4781 | }; | |
4782 | struct nfs4_getattr_res res = { | |
4783 | .fattr = &fattr, | |
4784 | .label = &label, | |
4785 | .server = server, | |
4786 | }; | |
4787 | struct rpc_message msg = { | |
4788 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4789 | .rpc_argp = &arg, |
aa9c2669 DQ |
4790 | .rpc_resp = &res, |
4791 | }; | |
4792 | int ret; | |
4793 | ||
4794 | nfs_fattr_init(&fattr); | |
4795 | ||
fcb63a9b | 4796 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4797 | if (ret) |
4798 | return ret; | |
4799 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4800 | return -ENOENT; | |
4801 | if (buflen < label.len) | |
4802 | return -ERANGE; | |
4803 | return 0; | |
4804 | } | |
4805 | ||
4806 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4807 | size_t buflen) | |
4808 | { | |
4809 | struct nfs4_exception exception = { }; | |
4810 | int err; | |
4811 | ||
4812 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4813 | return -EOPNOTSUPP; | |
4814 | ||
4815 | do { | |
c1578b76 TM |
4816 | err = _nfs4_get_security_label(inode, buf, buflen); |
4817 | trace_nfs4_get_security_label(inode, err); | |
4818 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4819 | &exception); |
4820 | } while (exception.retry); | |
4821 | return err; | |
4822 | } | |
4823 | ||
4824 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4825 | struct nfs4_label *ilabel, | |
4826 | struct nfs_fattr *fattr, | |
4827 | struct nfs4_label *olabel) | |
4828 | { | |
4829 | ||
4830 | struct iattr sattr = {0}; | |
4831 | struct nfs_server *server = NFS_SERVER(inode); | |
4832 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4833 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4834 | .fh = NFS_FH(inode), |
4835 | .iap = &sattr, | |
4836 | .server = server, | |
4837 | .bitmask = bitmask, | |
4838 | .label = ilabel, | |
4839 | }; | |
4840 | struct nfs_setattrres res = { | |
4841 | .fattr = fattr, | |
4842 | .label = olabel, | |
4843 | .server = server, | |
4844 | }; | |
4845 | struct rpc_message msg = { | |
4846 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4847 | .rpc_argp = &arg, |
aa9c2669 DQ |
4848 | .rpc_resp = &res, |
4849 | }; | |
4850 | int status; | |
4851 | ||
12207f69 | 4852 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4853 | |
12207f69 | 4854 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4855 | if (status) |
4856 | dprintk("%s failed: %d\n", __func__, status); | |
4857 | ||
4858 | return status; | |
4859 | } | |
4860 | ||
4861 | static int nfs4_do_set_security_label(struct inode *inode, | |
4862 | struct nfs4_label *ilabel, | |
4863 | struct nfs_fattr *fattr, | |
4864 | struct nfs4_label *olabel) | |
4865 | { | |
4866 | struct nfs4_exception exception = { }; | |
4867 | int err; | |
4868 | ||
4869 | do { | |
c1578b76 TM |
4870 | err = _nfs4_do_set_security_label(inode, ilabel, |
4871 | fattr, olabel); | |
4872 | trace_nfs4_set_security_label(inode, err); | |
4873 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4874 | &exception); |
4875 | } while (exception.retry); | |
4876 | return err; | |
4877 | } | |
4878 | ||
4879 | static int | |
4880 | nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen) | |
4881 | { | |
4882 | struct nfs4_label ilabel, *olabel = NULL; | |
4883 | struct nfs_fattr fattr; | |
4884 | struct rpc_cred *cred; | |
2b0143b5 | 4885 | struct inode *inode = d_inode(dentry); |
aa9c2669 DQ |
4886 | int status; |
4887 | ||
4888 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4889 | return -EOPNOTSUPP; | |
4890 | ||
4891 | nfs_fattr_init(&fattr); | |
4892 | ||
4893 | ilabel.pi = 0; | |
4894 | ilabel.lfs = 0; | |
4895 | ilabel.label = (char *)buf; | |
4896 | ilabel.len = buflen; | |
4897 | ||
4898 | cred = rpc_lookup_cred(); | |
4899 | if (IS_ERR(cred)) | |
4900 | return PTR_ERR(cred); | |
4901 | ||
4902 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
4903 | if (IS_ERR(olabel)) { | |
4904 | status = -PTR_ERR(olabel); | |
4905 | goto out; | |
4906 | } | |
4907 | ||
4908 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
4909 | if (status == 0) | |
4910 | nfs_setsecurity(inode, &fattr, olabel); | |
4911 | ||
4912 | nfs4_label_free(olabel); | |
4913 | out: | |
4914 | put_rpccred(cred); | |
4915 | return status; | |
4916 | } | |
4917 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
4918 | ||
4919 | ||
1da177e4 | 4920 | static int |
8478eaa1 N |
4921 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, |
4922 | struct nfs4_state *state, long *timeout) | |
1da177e4 | 4923 | { |
aa5190d0 TM |
4924 | struct nfs_client *clp = server->nfs_client; |
4925 | ||
4926 | if (task->tk_status >= 0) | |
1da177e4 LT |
4927 | return 0; |
4928 | switch(task->tk_status) { | |
a1d0b5ee | 4929 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4930 | case -NFS4ERR_ADMIN_REVOKED: |
4931 | case -NFS4ERR_BAD_STATEID: | |
4932 | case -NFS4ERR_OPENMODE: | |
4933 | if (state == NULL) | |
4934 | break; | |
5d422301 | 4935 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
9f51a78e | 4936 | goto recovery_failed; |
0400a6b0 | 4937 | goto wait_on_recovery; |
0ced63d1 | 4938 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4939 | if (state != NULL) { |
4940 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
9f51a78e | 4941 | goto recovery_failed; |
5d422301 | 4942 | } |
1da177e4 | 4943 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4944 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4945 | nfs4_schedule_lease_recovery(clp); |
4946 | goto wait_on_recovery; | |
519ae255 CL |
4947 | case -NFS4ERR_MOVED: |
4948 | if (nfs4_schedule_migration_recovery(server) < 0) | |
4949 | goto recovery_failed; | |
4950 | goto wait_on_recovery; | |
8ef2f8d4 CL |
4951 | case -NFS4ERR_LEASE_MOVED: |
4952 | nfs4_schedule_lease_moved_recovery(clp); | |
4953 | goto wait_on_recovery; | |
4745e315 AA |
4954 | #if defined(CONFIG_NFS_V4_1) |
4955 | case -NFS4ERR_BADSESSION: | |
4956 | case -NFS4ERR_BADSLOT: | |
4957 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4958 | case -NFS4ERR_DEADSESSION: | |
4959 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4960 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4961 | case -NFS4ERR_SEQ_MISORDERED: | |
4962 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4963 | task->tk_status); | |
9f594791 | 4964 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4a82fd7c | 4965 | goto wait_on_recovery; |
4745e315 | 4966 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4967 | case -NFS4ERR_DELAY: |
aa5190d0 | 4968 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
8478eaa1 N |
4969 | rpc_delay(task, nfs4_update_delay(timeout)); |
4970 | goto restart_call; | |
006ea73e | 4971 | case -NFS4ERR_GRACE: |
1da177e4 | 4972 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a | 4973 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 | 4974 | case -NFS4ERR_OLD_STATEID: |
f1478c13 | 4975 | goto restart_call; |
1da177e4 LT |
4976 | } |
4977 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4978 | return 0; | |
9f51a78e | 4979 | recovery_failed: |
5d422301 TM |
4980 | task->tk_status = -EIO; |
4981 | return 0; | |
0400a6b0 | 4982 | wait_on_recovery: |
a2c0b9e2 | 4983 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4984 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4985 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
519ae255 CL |
4986 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
4987 | goto recovery_failed; | |
f1478c13 | 4988 | restart_call: |
a2c0b9e2 TM |
4989 | task->tk_status = 0; |
4990 | return -EAGAIN; | |
1da177e4 LT |
4991 | } |
4992 | ||
f092075d CL |
4993 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4994 | nfs4_verifier *bootverf) | |
cd93710e CL |
4995 | { |
4996 | __be32 verf[2]; | |
4997 | ||
2c820d9a CL |
4998 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4999 | /* An impossible timestamp guarantees this value | |
5000 | * will never match a generated boot time. */ | |
5001 | verf[0] = 0; | |
17f26b12 | 5002 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5003 | } else { |
f092075d | 5004 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5005 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5006 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5007 | } |
cd93710e CL |
5008 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5009 | } | |
5010 | ||
a3192688 JL |
5011 | static int |
5012 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5013 | { |
a3192688 JL |
5014 | int result; |
5015 | size_t len; | |
5016 | char *str; | |
5017 | bool retried = false; | |
e984a55a | 5018 | |
ceb3a16c | 5019 | if (clp->cl_owner_id != NULL) |
a3192688 JL |
5020 | return 0; |
5021 | retry: | |
5022 | rcu_read_lock(); | |
5023 | len = 10 + strlen(clp->cl_ipaddr) + 1 + | |
5024 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + | |
5025 | 1 + | |
5026 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5027 | 1; | |
5028 | rcu_read_unlock(); | |
5029 | ||
5030 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5031 | return -EINVAL; | |
5032 | ||
5033 | /* | |
5034 | * Since this string is allocated at mount time, and held until the | |
5035 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5036 | * about a memory-reclaim deadlock. | |
5037 | */ | |
5038 | str = kmalloc(len, GFP_KERNEL); | |
5039 | if (!str) | |
5040 | return -ENOMEM; | |
ceb3a16c | 5041 | |
e984a55a | 5042 | rcu_read_lock(); |
a3192688 JL |
5043 | result = scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
5044 | clp->cl_ipaddr, | |
5045 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5046 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5047 | rcu_read_unlock(); |
a3192688 JL |
5048 | |
5049 | /* Did something change? */ | |
5050 | if (result >= len) { | |
5051 | kfree(str); | |
5052 | if (retried) | |
5053 | return -EINVAL; | |
5054 | retried = true; | |
5055 | goto retry; | |
5056 | } | |
5057 | clp->cl_owner_id = str; | |
5058 | return 0; | |
e984a55a CL |
5059 | } |
5060 | ||
873e3851 JL |
5061 | static int |
5062 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5063 | { | |
5064 | int result; | |
5065 | size_t len; | |
5066 | char *str; | |
5067 | ||
5068 | len = 10 + 10 + 1 + 10 + 1 + | |
5069 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5070 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5071 | ||
5072 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5073 | return -EINVAL; | |
5074 | ||
5075 | /* | |
5076 | * Since this string is allocated at mount time, and held until the | |
5077 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5078 | * about a memory-reclaim deadlock. | |
5079 | */ | |
5080 | str = kmalloc(len, GFP_KERNEL); | |
5081 | if (!str) | |
5082 | return -ENOMEM; | |
5083 | ||
5084 | result = scnprintf(str, len, "Linux NFSv%u.%u %s/%s", | |
5085 | clp->rpc_ops->version, clp->cl_minorversion, | |
5086 | nfs4_client_id_uniquifier, | |
5087 | clp->cl_rpcclient->cl_nodename); | |
5088 | if (result >= len) { | |
5089 | kfree(str); | |
5090 | return -EINVAL; | |
5091 | } | |
5092 | clp->cl_owner_id = str; | |
5093 | return 0; | |
5094 | } | |
5095 | ||
5096 | static int | |
5097 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5098 | { |
873e3851 JL |
5099 | int result; |
5100 | size_t len; | |
5101 | char *str; | |
ceb3a16c TM |
5102 | |
5103 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5104 | return 0; |
6f2ea7f2 CL |
5105 | |
5106 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5107 | return nfs4_init_uniquifier_client_string(clp); |
5108 | ||
5109 | len = 10 + 10 + 1 + 10 + 1 + | |
5110 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5111 | ||
5112 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5113 | return -EINVAL; | |
5114 | ||
5115 | /* | |
5116 | * Since this string is allocated at mount time, and held until the | |
5117 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5118 | * about a memory-reclaim deadlock. | |
5119 | */ | |
5120 | str = kmalloc(len, GFP_KERNEL); | |
5121 | if (!str) | |
5122 | return -ENOMEM; | |
5123 | ||
5124 | result = scnprintf(str, len, "Linux NFSv%u.%u %s", | |
5125 | clp->rpc_ops->version, clp->cl_minorversion, | |
5126 | clp->cl_rpcclient->cl_nodename); | |
5127 | if (result >= len) { | |
5128 | kfree(str); | |
5129 | return -EINVAL; | |
5130 | } | |
5131 | clp->cl_owner_id = str; | |
5132 | return 0; | |
e984a55a CL |
5133 | } |
5134 | ||
706cb8db CL |
5135 | /* |
5136 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5137 | * services. Advertise one based on the address family of the | |
5138 | * clientaddr. | |
5139 | */ | |
5140 | static unsigned int | |
5141 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5142 | { | |
5143 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5144 | return scnprintf(buf, len, "tcp6"); | |
5145 | else | |
5146 | return scnprintf(buf, len, "tcp"); | |
5147 | } | |
5148 | ||
f11b2a1c JL |
5149 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5150 | { | |
5151 | struct nfs4_setclientid *sc = calldata; | |
5152 | ||
5153 | if (task->tk_status == 0) | |
5154 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5155 | } | |
5156 | ||
5157 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5158 | .rpc_call_done = nfs4_setclientid_done, | |
5159 | }; | |
5160 | ||
6bbb4ae8 CL |
5161 | /** |
5162 | * nfs4_proc_setclientid - Negotiate client ID | |
5163 | * @clp: state data structure | |
5164 | * @program: RPC program for NFSv4 callback service | |
5165 | * @port: IP port number for NFS4 callback service | |
5166 | * @cred: RPC credential to use for this call | |
5167 | * @res: where to place the result | |
5168 | * | |
5169 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5170 | */ | |
bb8b27e5 TM |
5171 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5172 | unsigned short port, struct rpc_cred *cred, | |
5173 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5174 | { |
5175 | nfs4_verifier sc_verifier; | |
5176 | struct nfs4_setclientid setclientid = { | |
5177 | .sc_verifier = &sc_verifier, | |
5178 | .sc_prog = program, | |
3a6bb738 | 5179 | .sc_clnt = clp, |
1da177e4 LT |
5180 | }; |
5181 | struct rpc_message msg = { | |
5182 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5183 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5184 | .rpc_resp = res, |
286d7d6a | 5185 | .rpc_cred = cred, |
1da177e4 | 5186 | }; |
f11b2a1c JL |
5187 | struct rpc_task *task; |
5188 | struct rpc_task_setup task_setup_data = { | |
5189 | .rpc_client = clp->cl_rpcclient, | |
5190 | .rpc_message = &msg, | |
5191 | .callback_ops = &nfs4_setclientid_ops, | |
5192 | .callback_data = &setclientid, | |
5193 | .flags = RPC_TASK_TIMEOUT, | |
5194 | }; | |
6bbb4ae8 | 5195 | int status; |
1da177e4 | 5196 | |
de734831 | 5197 | /* nfs_client_id4 */ |
f092075d | 5198 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5199 | |
5200 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5201 | status = nfs4_init_uniform_client_string(clp); | |
5202 | else | |
a3192688 | 5203 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5204 | |
5205 | if (status) | |
5206 | goto out; | |
3a6bb738 | 5207 | |
de734831 | 5208 | /* cb_client4 */ |
706cb8db CL |
5209 | setclientid.sc_netid_len = |
5210 | nfs4_init_callback_netid(clp, | |
5211 | setclientid.sc_netid, | |
5212 | sizeof(setclientid.sc_netid)); | |
de734831 | 5213 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5214 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5215 | clp->cl_ipaddr, port >> 8, port & 255); |
5216 | ||
3a6bb738 | 5217 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5218 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5219 | clp->cl_owner_id); |
f11b2a1c JL |
5220 | task = rpc_run_task(&task_setup_data); |
5221 | if (IS_ERR(task)) { | |
5222 | status = PTR_ERR(task); | |
5223 | goto out; | |
5224 | } | |
5225 | status = task->tk_status; | |
5226 | if (setclientid.sc_cred) { | |
5227 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5228 | put_rpccred(setclientid.sc_cred); | |
5229 | } | |
5230 | rpc_put_task(task); | |
5231 | out: | |
c6d01c6f | 5232 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5233 | dprintk("NFS reply setclientid: %d\n", status); |
5234 | return status; | |
1da177e4 LT |
5235 | } |
5236 | ||
6bbb4ae8 CL |
5237 | /** |
5238 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5239 | * @clp: state data structure | |
5240 | * @res: result of a previous SETCLIENTID | |
5241 | * @cred: RPC credential to use for this call | |
5242 | * | |
5243 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5244 | */ | |
fd954ae1 | 5245 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5246 | struct nfs4_setclientid_res *arg, |
5247 | struct rpc_cred *cred) | |
1da177e4 | 5248 | { |
1da177e4 LT |
5249 | struct rpc_message msg = { |
5250 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5251 | .rpc_argp = arg, |
286d7d6a | 5252 | .rpc_cred = cred, |
1da177e4 | 5253 | }; |
1da177e4 LT |
5254 | int status; |
5255 | ||
6bbb4ae8 CL |
5256 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5257 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5258 | clp->cl_clientid); | |
1bd714f2 | 5259 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5260 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5261 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5262 | return status; |
5263 | } | |
5264 | ||
fe650407 TM |
5265 | struct nfs4_delegreturndata { |
5266 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5267 | struct nfs4_delegreturnres res; |
fe650407 TM |
5268 | struct nfs_fh fh; |
5269 | nfs4_stateid stateid; | |
26e976a8 | 5270 | unsigned long timestamp; |
fa178f29 | 5271 | struct nfs_fattr fattr; |
fe650407 | 5272 | int rpc_status; |
039b756a PT |
5273 | struct inode *inode; |
5274 | bool roc; | |
5275 | u32 roc_barrier; | |
fe650407 TM |
5276 | }; |
5277 | ||
fe650407 TM |
5278 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5279 | { | |
5280 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5281 | |
14516c3a TM |
5282 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5283 | return; | |
938e1010 | 5284 | |
ca8acf8d | 5285 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5286 | switch (task->tk_status) { |
79708861 | 5287 | case 0: |
fa178f29 | 5288 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5289 | case -NFS4ERR_ADMIN_REVOKED: |
5290 | case -NFS4ERR_DELEG_REVOKED: | |
5291 | case -NFS4ERR_BAD_STATEID: | |
5292 | case -NFS4ERR_OLD_STATEID: | |
5293 | case -NFS4ERR_STALE_STATEID: | |
5294 | case -NFS4ERR_EXPIRED: | |
5295 | task->tk_status = 0; | |
039b756a PT |
5296 | if (data->roc) |
5297 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5298 | break; |
79708861 | 5299 | default: |
8478eaa1 N |
5300 | if (nfs4_async_handle_error(task, data->res.server, |
5301 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5302 | rpc_restart_call_prepare(task); |
79708861 RL |
5303 | return; |
5304 | } | |
5305 | } | |
5306 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5307 | } |
5308 | ||
5309 | static void nfs4_delegreturn_release(void *calldata) | |
5310 | { | |
039b756a | 5311 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5312 | struct inode *inode = data->inode; |
039b756a | 5313 | |
ea7c38fe TM |
5314 | if (inode) { |
5315 | if (data->roc) | |
5316 | pnfs_roc_release(inode); | |
5317 | nfs_iput_and_deactive(inode); | |
5318 | } | |
fe650407 TM |
5319 | kfree(calldata); |
5320 | } | |
5321 | ||
938e1010 AA |
5322 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5323 | { | |
5324 | struct nfs4_delegreturndata *d_data; | |
5325 | ||
5326 | d_data = (struct nfs4_delegreturndata *)data; | |
5327 | ||
4ff376fe TM |
5328 | if (d_data->roc) |
5329 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5330 | |
d9afbd1b TM |
5331 | nfs4_setup_sequence(d_data->res.server, |
5332 | &d_data->args.seq_args, | |
5333 | &d_data->res.seq_res, | |
5334 | task); | |
938e1010 | 5335 | } |
938e1010 | 5336 | |
c8d149f3 | 5337 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5338 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5339 | .rpc_call_done = nfs4_delegreturn_done, |
5340 | .rpc_release = nfs4_delegreturn_release, | |
5341 | }; | |
5342 | ||
e6f81075 | 5343 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5344 | { |
5345 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5346 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5347 | struct rpc_task *task; |
5138fde0 TM |
5348 | struct rpc_message msg = { |
5349 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5350 | .rpc_cred = cred, | |
5351 | }; | |
c970aa85 TM |
5352 | struct rpc_task_setup task_setup_data = { |
5353 | .rpc_client = server->client, | |
5138fde0 | 5354 | .rpc_message = &msg, |
c970aa85 TM |
5355 | .callback_ops = &nfs4_delegreturn_ops, |
5356 | .flags = RPC_TASK_ASYNC, | |
5357 | }; | |
e6f81075 | 5358 | int status = 0; |
fe650407 | 5359 | |
8535b2be | 5360 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5361 | if (data == NULL) |
5362 | return -ENOMEM; | |
a9c92d6b | 5363 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
5364 | data->args.fhandle = &data->fh; |
5365 | data->args.stateid = &data->stateid; | |
9e907fec | 5366 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5367 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5368 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5369 | data->res.fattr = &data->fattr; |
5370 | data->res.server = server; | |
5138fde0 | 5371 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5372 | data->timestamp = jiffies; |
fe650407 | 5373 | data->rpc_status = 0; |
ea7c38fe TM |
5374 | data->inode = nfs_igrab_and_active(inode); |
5375 | if (data->inode) | |
5376 | data->roc = nfs4_roc(inode); | |
fe650407 | 5377 | |
c970aa85 | 5378 | task_setup_data.callback_data = data; |
1174dd1f TM |
5379 | msg.rpc_argp = &data->args; |
5380 | msg.rpc_resp = &data->res; | |
c970aa85 | 5381 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5382 | if (IS_ERR(task)) |
fe650407 | 5383 | return PTR_ERR(task); |
e6f81075 TM |
5384 | if (!issync) |
5385 | goto out; | |
fe650407 | 5386 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5387 | if (status != 0) |
5388 | goto out; | |
5389 | status = data->rpc_status; | |
e144cbcc TM |
5390 | if (status == 0) |
5391 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5392 | else | |
5393 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5394 | out: |
e6b3c4db | 5395 | rpc_put_task(task); |
fe650407 | 5396 | return status; |
1da177e4 LT |
5397 | } |
5398 | ||
e6f81075 | 5399 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5400 | { |
5401 | struct nfs_server *server = NFS_SERVER(inode); | |
5402 | struct nfs4_exception exception = { }; | |
5403 | int err; | |
5404 | do { | |
e6f81075 | 5405 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
ca8acf8d | 5406 | trace_nfs4_delegreturn(inode, err); |
1da177e4 LT |
5407 | switch (err) { |
5408 | case -NFS4ERR_STALE_STATEID: | |
5409 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5410 | case 0: |
5411 | return 0; | |
5412 | } | |
5413 | err = nfs4_handle_exception(server, err, &exception); | |
5414 | } while (exception.retry); | |
5415 | return err; | |
5416 | } | |
5417 | ||
5418 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5419 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5420 | ||
5421 | /* | |
5422 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5423 | */ | |
5424 | static unsigned long | |
5425 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5426 | { | |
416ad3c9 | 5427 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5428 | timeout <<= 1; |
5429 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5430 | return NFS4_LOCK_MAXTIMEOUT; | |
5431 | return timeout; | |
5432 | } | |
5433 | ||
1da177e4 LT |
5434 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5435 | { | |
5436 | struct inode *inode = state->inode; | |
5437 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5438 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5439 | struct nfs_lockt_args arg = { |
1da177e4 | 5440 | .fh = NFS_FH(inode), |
911d1aaf | 5441 | .fl = request, |
1da177e4 | 5442 | }; |
911d1aaf TM |
5443 | struct nfs_lockt_res res = { |
5444 | .denied = request, | |
1da177e4 LT |
5445 | }; |
5446 | struct rpc_message msg = { | |
5447 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5448 | .rpc_argp = &arg, | |
5449 | .rpc_resp = &res, | |
5450 | .rpc_cred = state->owner->so_cred, | |
5451 | }; | |
1da177e4 LT |
5452 | struct nfs4_lock_state *lsp; |
5453 | int status; | |
5454 | ||
911d1aaf | 5455 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5456 | status = nfs4_set_lock_state(state, request); |
5457 | if (status != 0) | |
5458 | goto out; | |
5459 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5460 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5461 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5462 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5463 | switch (status) { |
5464 | case 0: | |
5465 | request->fl_type = F_UNLCK; | |
5466 | break; | |
5467 | case -NFS4ERR_DENIED: | |
5468 | status = 0; | |
1da177e4 | 5469 | } |
70cc6487 | 5470 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5471 | request->fl_ops = NULL; |
8d0a8a9d | 5472 | out: |
1da177e4 LT |
5473 | return status; |
5474 | } | |
5475 | ||
5476 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5477 | { | |
5478 | struct nfs4_exception exception = { }; | |
5479 | int err; | |
5480 | ||
5481 | do { | |
d1b748a5 TM |
5482 | err = _nfs4_proc_getlk(state, cmd, request); |
5483 | trace_nfs4_get_lock(request, state, cmd, err); | |
5484 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5485 | &exception); |
5486 | } while (exception.retry); | |
5487 | return err; | |
5488 | } | |
5489 | ||
83bfff23 | 5490 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 LT |
5491 | { |
5492 | int res = 0; | |
5493 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
5494 | case FL_POSIX: | |
83bfff23 | 5495 | res = posix_lock_inode_wait(inode, fl); |
1da177e4 LT |
5496 | break; |
5497 | case FL_FLOCK: | |
83bfff23 | 5498 | res = flock_lock_inode_wait(inode, fl); |
1da177e4 LT |
5499 | break; |
5500 | default: | |
5501 | BUG(); | |
5502 | } | |
1da177e4 LT |
5503 | return res; |
5504 | } | |
5505 | ||
faf5f49c | 5506 | struct nfs4_unlockdata { |
911d1aaf TM |
5507 | struct nfs_locku_args arg; |
5508 | struct nfs_locku_res res; | |
faf5f49c TM |
5509 | struct nfs4_lock_state *lsp; |
5510 | struct nfs_open_context *ctx; | |
911d1aaf TM |
5511 | struct file_lock fl; |
5512 | const struct nfs_server *server; | |
26e976a8 | 5513 | unsigned long timestamp; |
faf5f49c TM |
5514 | }; |
5515 | ||
911d1aaf TM |
5516 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5517 | struct nfs_open_context *ctx, | |
5518 | struct nfs4_lock_state *lsp, | |
5519 | struct nfs_seqid *seqid) | |
5520 | { | |
5521 | struct nfs4_unlockdata *p; | |
5522 | struct inode *inode = lsp->ls_state->inode; | |
5523 | ||
8535b2be | 5524 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5525 | if (p == NULL) |
5526 | return NULL; | |
5527 | p->arg.fh = NFS_FH(inode); | |
5528 | p->arg.fl = &p->fl; | |
5529 | p->arg.seqid = seqid; | |
c1d51931 | 5530 | p->res.seqid = seqid; |
911d1aaf TM |
5531 | p->lsp = lsp; |
5532 | atomic_inc(&lsp->ls_count); | |
5533 | /* Ensure we don't close file until we're done freeing locks! */ | |
5534 | p->ctx = get_nfs_open_context(ctx); | |
5535 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5536 | p->server = NFS_SERVER(inode); | |
5537 | return p; | |
5538 | } | |
5539 | ||
06f814a3 | 5540 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5541 | { |
963d8fe5 | 5542 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5543 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5544 | nfs4_put_lock_state(calldata->lsp); |
5545 | put_nfs_open_context(calldata->ctx); | |
5546 | kfree(calldata); | |
faf5f49c TM |
5547 | } |
5548 | ||
963d8fe5 | 5549 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5550 | { |
963d8fe5 | 5551 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5552 | |
14516c3a TM |
5553 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5554 | return; | |
faf5f49c TM |
5555 | switch (task->tk_status) { |
5556 | case 0: | |
26e976a8 | 5557 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5558 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5559 | if (nfs4_update_lock_stateid(calldata->lsp, |
5560 | &calldata->res.stateid)) | |
5561 | break; | |
9e33bed5 TM |
5562 | case -NFS4ERR_BAD_STATEID: |
5563 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5564 | case -NFS4ERR_STALE_STATEID: |
5565 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5566 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5567 | &calldata->lsp->ls_stateid)) | |
5568 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5569 | break; |
5570 | default: | |
8478eaa1 N |
5571 | if (nfs4_async_handle_error(task, calldata->server, |
5572 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5573 | rpc_restart_call_prepare(task); |
faf5f49c | 5574 | } |
2b1bc308 | 5575 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5576 | } |
5577 | ||
4ce70ada | 5578 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5579 | { |
4ce70ada | 5580 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5581 | |
911d1aaf | 5582 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5583 | goto out_wait; |
425c1d4e | 5584 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5585 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5586 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5587 | goto out_no_action; |
faf5f49c | 5588 | } |
26e976a8 | 5589 | calldata->timestamp = jiffies; |
035168ab | 5590 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5591 | &calldata->arg.seq_args, |
2240a9e2 TM |
5592 | &calldata->res.seq_res, |
5593 | task) != 0) | |
5594 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5595 | return; |
5596 | out_no_action: | |
5597 | task->tk_action = NULL; | |
5598 | out_wait: | |
5599 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5600 | } |
5601 | ||
963d8fe5 | 5602 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5603 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5604 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5605 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5606 | }; |
5607 | ||
a5d16a4d TM |
5608 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5609 | struct nfs_open_context *ctx, | |
5610 | struct nfs4_lock_state *lsp, | |
5611 | struct nfs_seqid *seqid) | |
5612 | { | |
5613 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5614 | struct rpc_message msg = { |
5615 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5616 | .rpc_cred = ctx->cred, | |
5617 | }; | |
c970aa85 TM |
5618 | struct rpc_task_setup task_setup_data = { |
5619 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5620 | .rpc_message = &msg, |
c970aa85 | 5621 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5622 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5623 | .flags = RPC_TASK_ASYNC, |
5624 | }; | |
a5d16a4d | 5625 | |
fa940720 WAA |
5626 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5627 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5628 | ||
137d6aca FF |
5629 | /* Ensure this is an unlock - when canceling a lock, the |
5630 | * canceled lock is passed in, and it won't be an unlock. | |
5631 | */ | |
5632 | fl->fl_type = F_UNLCK; | |
5633 | ||
a5d16a4d TM |
5634 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5635 | if (data == NULL) { | |
5636 | nfs_free_seqid(seqid); | |
5637 | return ERR_PTR(-ENOMEM); | |
5638 | } | |
5639 | ||
a9c92d6b | 5640 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5641 | msg.rpc_argp = &data->arg; |
5642 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5643 | task_setup_data.callback_data = data; |
5644 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5645 | } |
5646 | ||
faf5f49c TM |
5647 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5648 | { | |
65b62a29 TM |
5649 | struct inode *inode = state->inode; |
5650 | struct nfs4_state_owner *sp = state->owner; | |
5651 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5652 | struct nfs_seqid *seqid; |
1da177e4 | 5653 | struct nfs4_lock_state *lsp; |
06f814a3 | 5654 | struct rpc_task *task; |
b4019c0e | 5655 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5656 | int status = 0; |
536ff0f8 | 5657 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5658 | |
8d0a8a9d | 5659 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5660 | /* Unlock _before_ we do the RPC call */ |
5661 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5662 | /* Exclude nfs_delegation_claim_locks() */ |
5663 | mutex_lock(&sp->so_delegreturn_mutex); | |
5664 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5665 | down_read(&nfsi->rwsem); |
83bfff23 | 5666 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5667 | up_read(&nfsi->rwsem); |
65b62a29 | 5668 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5669 | goto out; |
19e03c57 TM |
5670 | } |
5671 | up_read(&nfsi->rwsem); | |
65b62a29 | 5672 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5673 | if (status != 0) |
9b073574 TM |
5674 | goto out; |
5675 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5676 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5677 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5678 | goto out; | |
b4019c0e TM |
5679 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5680 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5681 | status = -ENOMEM; |
badc76dd | 5682 | if (IS_ERR(seqid)) |
9b073574 | 5683 | goto out; |
cd3758e3 | 5684 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5685 | status = PTR_ERR(task); |
5686 | if (IS_ERR(task)) | |
9b073574 | 5687 | goto out; |
a5d16a4d | 5688 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5689 | rpc_put_task(task); |
9b073574 | 5690 | out: |
536ff0f8 | 5691 | request->fl_flags = fl_flags; |
d1b748a5 | 5692 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5693 | return status; |
5694 | } | |
5695 | ||
a5d16a4d TM |
5696 | struct nfs4_lockdata { |
5697 | struct nfs_lock_args arg; | |
5698 | struct nfs_lock_res res; | |
5699 | struct nfs4_lock_state *lsp; | |
5700 | struct nfs_open_context *ctx; | |
5701 | struct file_lock fl; | |
26e976a8 | 5702 | unsigned long timestamp; |
a5d16a4d TM |
5703 | int rpc_status; |
5704 | int cancelled; | |
66179efe | 5705 | struct nfs_server *server; |
a5d16a4d TM |
5706 | }; |
5707 | ||
5708 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5709 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5710 | gfp_t gfp_mask) | |
1da177e4 | 5711 | { |
a5d16a4d TM |
5712 | struct nfs4_lockdata *p; |
5713 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5714 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5715 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5716 | |
8535b2be | 5717 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5718 | if (p == NULL) |
5719 | return NULL; | |
5720 | ||
5721 | p->arg.fh = NFS_FH(inode); | |
5722 | p->arg.fl = &p->fl; | |
8535b2be | 5723 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5724 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5725 | goto out_free; |
b4019c0e TM |
5726 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5727 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5728 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5729 | goto out_free_seqid; |
7539bbab | 5730 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5731 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5732 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5733 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5734 | p->lsp = lsp; |
66179efe | 5735 | p->server = server; |
a5d16a4d TM |
5736 | atomic_inc(&lsp->ls_count); |
5737 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5738 | get_file(fl->fl_file); |
a5d16a4d TM |
5739 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5740 | return p; | |
2f74c0a0 TM |
5741 | out_free_seqid: |
5742 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5743 | out_free: |
5744 | kfree(p); | |
5745 | return NULL; | |
5746 | } | |
5747 | ||
5748 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5749 | { | |
5750 | struct nfs4_lockdata *data = calldata; | |
5751 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5752 | |
3110ff80 | 5753 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5754 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5755 | goto out_wait; |
a5d16a4d | 5756 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5757 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5758 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5759 | goto out_release_lock_seqid; |
8fe72bac | 5760 | } |
425c1d4e TM |
5761 | nfs4_stateid_copy(&data->arg.open_stateid, |
5762 | &state->open_stateid); | |
a5d16a4d | 5763 | data->arg.new_lock_owner = 1; |
c1d51931 | 5764 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5765 | } else { |
2f74c0a0 | 5766 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5767 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5768 | &data->lsp->ls_stateid); | |
5769 | } | |
5d422301 TM |
5770 | if (!nfs4_valid_open_stateid(state)) { |
5771 | data->rpc_status = -EBADF; | |
5772 | task->tk_action = NULL; | |
5773 | goto out_release_open_seqid; | |
5774 | } | |
26e976a8 | 5775 | data->timestamp = jiffies; |
035168ab TM |
5776 | if (nfs4_setup_sequence(data->server, |
5777 | &data->arg.seq_args, | |
2240a9e2 | 5778 | &data->res.seq_res, |
d9afbd1b | 5779 | task) == 0) |
66179efe | 5780 | return; |
5d422301 | 5781 | out_release_open_seqid: |
2240a9e2 TM |
5782 | nfs_release_seqid(data->arg.open_seqid); |
5783 | out_release_lock_seqid: | |
5784 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5785 | out_wait: |
5786 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5787 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5788 | } |
5789 | ||
a5d16a4d TM |
5790 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5791 | { | |
5792 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5793 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5794 | |
3110ff80 | 5795 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5796 | |
14516c3a TM |
5797 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5798 | return; | |
66179efe | 5799 | |
a5d16a4d | 5800 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5801 | switch (task->tk_status) { |
5802 | case 0: | |
2b0143b5 | 5803 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5804 | data->timestamp); |
c69899a1 TM |
5805 | if (data->arg.new_lock) { |
5806 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5807 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5808 | rpc_restart_call_prepare(task); |
5809 | break; | |
5810 | } | |
5811 | } | |
39071e6f TM |
5812 | if (data->arg.new_lock_owner != 0) { |
5813 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5814 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5815 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5816 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5817 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5818 | break; |
5819 | case -NFS4ERR_BAD_STATEID: | |
5820 | case -NFS4ERR_OLD_STATEID: | |
5821 | case -NFS4ERR_STALE_STATEID: | |
5822 | case -NFS4ERR_EXPIRED: | |
5823 | if (data->arg.new_lock_owner != 0) { | |
5824 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5825 | &lsp->ls_state->open_stateid)) | |
5826 | rpc_restart_call_prepare(task); | |
5827 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5828 | &lsp->ls_stateid)) | |
5829 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5830 | } |
3110ff80 | 5831 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5832 | } |
5833 | ||
5834 | static void nfs4_lock_release(void *calldata) | |
5835 | { | |
5836 | struct nfs4_lockdata *data = calldata; | |
5837 | ||
3110ff80 | 5838 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5839 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5840 | if (data->cancelled != 0) { |
5841 | struct rpc_task *task; | |
5842 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5843 | data->arg.lock_seqid); | |
5844 | if (!IS_ERR(task)) | |
bf294b41 | 5845 | rpc_put_task_async(task); |
3110ff80 | 5846 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5847 | } else |
5848 | nfs_free_seqid(data->arg.lock_seqid); | |
5849 | nfs4_put_lock_state(data->lsp); | |
5850 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5851 | fput(data->fl.fl_file); |
a5d16a4d | 5852 | kfree(data); |
3110ff80 | 5853 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5854 | } |
5855 | ||
5856 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5857 | .rpc_call_prepare = nfs4_lock_prepare, | |
5858 | .rpc_call_done = nfs4_lock_done, | |
5859 | .rpc_release = nfs4_lock_release, | |
5860 | }; | |
5861 | ||
2bee72a6 TM |
5862 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5863 | { | |
2bee72a6 TM |
5864 | switch (error) { |
5865 | case -NFS4ERR_ADMIN_REVOKED: | |
5866 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5867 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5868 | if (new_lock_owner != 0 || |
795a88c9 | 5869 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5870 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5871 | break; |
5872 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5873 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5874 | case -NFS4ERR_EXPIRED: |
5875 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5876 | }; |
5877 | } | |
5878 | ||
afe6c27c | 5879 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5880 | { |
5881 | struct nfs4_lockdata *data; | |
5882 | struct rpc_task *task; | |
5138fde0 TM |
5883 | struct rpc_message msg = { |
5884 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5885 | .rpc_cred = state->owner->so_cred, | |
5886 | }; | |
c970aa85 TM |
5887 | struct rpc_task_setup task_setup_data = { |
5888 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5889 | .rpc_message = &msg, |
c970aa85 | 5890 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5891 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5892 | .flags = RPC_TASK_ASYNC, |
5893 | }; | |
a5d16a4d TM |
5894 | int ret; |
5895 | ||
3110ff80 | 5896 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5897 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5898 | fl->fl_u.nfs4_fl.owner, |
5899 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5900 | if (data == NULL) |
5901 | return -ENOMEM; | |
5902 | if (IS_SETLKW(cmd)) | |
5903 | data->arg.block = 1; | |
a9c92d6b | 5904 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5905 | msg.rpc_argp = &data->arg; |
5906 | msg.rpc_resp = &data->res; | |
c970aa85 | 5907 | task_setup_data.callback_data = data; |
8fe72bac TM |
5908 | if (recovery_type > NFS_LOCK_NEW) { |
5909 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5910 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5911 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5912 | } else |
5913 | data->arg.new_lock = 1; | |
c970aa85 | 5914 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5915 | if (IS_ERR(task)) |
a5d16a4d | 5916 | return PTR_ERR(task); |
a5d16a4d TM |
5917 | ret = nfs4_wait_for_completion_rpc_task(task); |
5918 | if (ret == 0) { | |
5919 | ret = data->rpc_status; | |
2bee72a6 TM |
5920 | if (ret) |
5921 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5922 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5923 | } else |
5924 | data->cancelled = 1; | |
e6b3c4db | 5925 | rpc_put_task(task); |
3110ff80 | 5926 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 5927 | return ret; |
1da177e4 LT |
5928 | } |
5929 | ||
5930 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5931 | { | |
202b50dc | 5932 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5933 | struct nfs4_exception exception = { |
5934 | .inode = state->inode, | |
5935 | }; | |
202b50dc TM |
5936 | int err; |
5937 | ||
5938 | do { | |
42a2d13e TM |
5939 | /* Cache the lock if possible... */ |
5940 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5941 | return 0; | |
afe6c27c | 5942 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
d1b748a5 | 5943 | trace_nfs4_lock_reclaim(request, state, F_SETLK, err); |
168667c4 | 5944 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5945 | break; |
5946 | nfs4_handle_exception(server, err, &exception); | |
5947 | } while (exception.retry); | |
5948 | return err; | |
1da177e4 LT |
5949 | } |
5950 | ||
5951 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5952 | { | |
202b50dc | 5953 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5954 | struct nfs4_exception exception = { |
5955 | .inode = state->inode, | |
5956 | }; | |
202b50dc TM |
5957 | int err; |
5958 | ||
6bfc93ef TM |
5959 | err = nfs4_set_lock_state(state, request); |
5960 | if (err != 0) | |
5961 | return err; | |
f6de7a39 | 5962 | if (!recover_lost_locks) { |
ef1820f9 N |
5963 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
5964 | return 0; | |
5965 | } | |
202b50dc | 5966 | do { |
42a2d13e TM |
5967 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5968 | return 0; | |
afe6c27c | 5969 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
d1b748a5 | 5970 | trace_nfs4_lock_expired(request, state, F_SETLK, err); |
a9ed2e25 TM |
5971 | switch (err) { |
5972 | default: | |
5973 | goto out; | |
5974 | case -NFS4ERR_GRACE: | |
5975 | case -NFS4ERR_DELAY: | |
5976 | nfs4_handle_exception(server, err, &exception); | |
5977 | err = 0; | |
5978 | } | |
202b50dc | 5979 | } while (exception.retry); |
a9ed2e25 | 5980 | out: |
202b50dc | 5981 | return err; |
1da177e4 LT |
5982 | } |
5983 | ||
f062eb6c | 5984 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5985 | /** |
5986 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5987 | * | |
5988 | * @state: NFSv4 state for an inode | |
5989 | * | |
5990 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5991 | * Otherwise a negative NFS4ERR value is returned. | |
5992 | */ | |
b01dd1d8 | 5993 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5994 | { |
eb64cf96 | 5995 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5996 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5997 | struct nfs_server *server = NFS_SERVER(state->inode); |
5998 | ||
b01dd1d8 | 5999 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 6000 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
6001 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
6002 | ||
6003 | status = nfs41_test_stateid(server, | |
6004 | &lsp->ls_stateid, | |
6005 | cred); | |
08cb47fa | 6006 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 6007 | if (status != NFS_OK) { |
3e60ffdd CL |
6008 | /* Free the stateid unless the server |
6009 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
6010 | if (status != -NFS4ERR_BAD_STATEID) |
6011 | nfs41_free_stateid(server, | |
ab7cb0df TM |
6012 | &lsp->ls_stateid, |
6013 | cred); | |
795a88c9 | 6014 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
6015 | ret = status; |
6016 | } | |
6017 | } | |
6018 | }; | |
6019 | ||
6020 | return ret; | |
6021 | } | |
6022 | ||
6023 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6024 | { | |
6025 | int status = NFS_OK; | |
6026 | ||
6027 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
6028 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
6029 | if (status != NFS_OK) |
6030 | status = nfs4_lock_expired(state, request); | |
6031 | return status; | |
f062eb6c BS |
6032 | } |
6033 | #endif | |
6034 | ||
1da177e4 LT |
6035 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6036 | { | |
19e03c57 | 6037 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 6038 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6039 | int status = -ENOLCK; |
1da177e4 | 6040 | |
8e469ebd TM |
6041 | if ((fl_flags & FL_POSIX) && |
6042 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6043 | goto out; | |
6bfc93ef | 6044 | /* Is this a delegated open? */ |
6bfc93ef TM |
6045 | status = nfs4_set_lock_state(state, request); |
6046 | if (status != 0) | |
6047 | goto out; | |
01c3b861 | 6048 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6049 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6050 | if (status < 0) |
6051 | goto out; | |
19e03c57 | 6052 | down_read(&nfsi->rwsem); |
01c3b861 | 6053 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6054 | /* Yes: cache locks! */ |
01c3b861 | 6055 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6056 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6057 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6058 | up_read(&nfsi->rwsem); |
9a99af49 | 6059 | goto out; |
9a99af49 | 6060 | } |
19e03c57 | 6061 | up_read(&nfsi->rwsem); |
c69899a1 | 6062 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6063 | out: |
6064 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6065 | return status; |
6066 | } | |
6067 | ||
6068 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6069 | { | |
a1d0b5ee TM |
6070 | struct nfs4_exception exception = { |
6071 | .state = state, | |
05ffe24f | 6072 | .inode = state->inode, |
a1d0b5ee | 6073 | }; |
1da177e4 LT |
6074 | int err; |
6075 | ||
6076 | do { | |
965b5d67 | 6077 | err = _nfs4_proc_setlk(state, cmd, request); |
d1b748a5 | 6078 | trace_nfs4_set_lock(request, state, cmd, err); |
965b5d67 TM |
6079 | if (err == -NFS4ERR_DENIED) |
6080 | err = -EAGAIN; | |
1da177e4 | 6081 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6082 | err, &exception); |
1da177e4 LT |
6083 | } while (exception.retry); |
6084 | return err; | |
6085 | } | |
6086 | ||
6087 | static int | |
6088 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6089 | { | |
6090 | struct nfs_open_context *ctx; | |
6091 | struct nfs4_state *state; | |
6092 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6093 | int status; | |
6094 | ||
6095 | /* verify open state */ | |
cd3758e3 | 6096 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6097 | state = ctx->state; |
6098 | ||
6099 | if (request->fl_start < 0 || request->fl_end < 0) | |
6100 | return -EINVAL; | |
6101 | ||
d953126a TM |
6102 | if (IS_GETLK(cmd)) { |
6103 | if (state != NULL) | |
6104 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6105 | return 0; | |
6106 | } | |
1da177e4 LT |
6107 | |
6108 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6109 | return -EINVAL; | |
6110 | ||
d953126a TM |
6111 | if (request->fl_type == F_UNLCK) { |
6112 | if (state != NULL) | |
6113 | return nfs4_proc_unlck(state, cmd, request); | |
6114 | return 0; | |
6115 | } | |
1da177e4 | 6116 | |
d953126a TM |
6117 | if (state == NULL) |
6118 | return -ENOLCK; | |
55725513 TM |
6119 | /* |
6120 | * Don't rely on the VFS having checked the file open mode, | |
6121 | * since it won't do this for flock() locks. | |
6122 | */ | |
f44106e2 | 6123 | switch (request->fl_type) { |
55725513 TM |
6124 | case F_RDLCK: |
6125 | if (!(filp->f_mode & FMODE_READ)) | |
6126 | return -EBADF; | |
6127 | break; | |
6128 | case F_WRLCK: | |
6129 | if (!(filp->f_mode & FMODE_WRITE)) | |
6130 | return -EBADF; | |
6131 | } | |
6132 | ||
1da177e4 LT |
6133 | do { |
6134 | status = nfs4_proc_setlk(state, cmd, request); | |
6135 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6136 | break; | |
6137 | timeout = nfs4_set_lock_task_retry(timeout); | |
6138 | status = -ERESTARTSYS; | |
6139 | if (signalled()) | |
6140 | break; | |
6141 | } while(status < 0); | |
1da177e4 LT |
6142 | return status; |
6143 | } | |
6144 | ||
db4f2e63 | 6145 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6146 | { |
6147 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6148 | int err; |
6149 | ||
6150 | err = nfs4_set_lock_state(state, fl); | |
6151 | if (err != 0) | |
db4f2e63 | 6152 | return err; |
4a706fa0 | 6153 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6154 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6155 | } |
6b3b5496 | 6156 | |
cf470c3e TM |
6157 | struct nfs_release_lockowner_data { |
6158 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6159 | struct nfs_server *server; |
cf470c3e | 6160 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6161 | struct nfs_release_lockowner_res res; |
60ea6812 | 6162 | unsigned long timestamp; |
cf470c3e TM |
6163 | }; |
6164 | ||
fbd4bfd1 CL |
6165 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6166 | { | |
6167 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6168 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6169 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6170 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6171 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6172 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6173 | } |
6174 | ||
6175 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6176 | { | |
6177 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6178 | struct nfs_server *server = data->server; |
6179 | ||
b7e63a10 | 6180 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6181 | |
6182 | switch (task->tk_status) { | |
6183 | case 0: | |
6184 | renew_lease(server, data->timestamp); | |
6185 | break; | |
6186 | case -NFS4ERR_STALE_CLIENTID: | |
6187 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6188 | nfs4_schedule_lease_recovery(server->nfs_client); |
6189 | break; | |
60ea6812 CL |
6190 | case -NFS4ERR_LEASE_MOVED: |
6191 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6192 | if (nfs4_async_handle_error(task, server, |
6193 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6194 | rpc_restart_call_prepare(task); |
6195 | } | |
fbd4bfd1 CL |
6196 | } |
6197 | ||
d3c7b7cc TM |
6198 | static void nfs4_release_lockowner_release(void *calldata) |
6199 | { | |
cf470c3e | 6200 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6201 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6202 | kfree(calldata); |
6203 | } | |
6204 | ||
17280175 | 6205 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6206 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6207 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6208 | .rpc_release = nfs4_release_lockowner_release, |
6209 | }; | |
6210 | ||
f1cdae87 JL |
6211 | static void |
6212 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6213 | { |
cf470c3e | 6214 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6215 | struct rpc_message msg = { |
6216 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6217 | }; | |
6218 | ||
6219 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6220 | return; |
fbd4bfd1 | 6221 | |
cf470c3e TM |
6222 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6223 | if (!data) | |
f1cdae87 | 6224 | return; |
cf470c3e | 6225 | data->lsp = lsp; |
5ae67c4f | 6226 | data->server = server; |
cf470c3e TM |
6227 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6228 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6229 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6230 | |
cf470c3e | 6231 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6232 | msg.rpc_resp = &data->res; |
6233 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6234 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6235 | } |
6236 | ||
aa1870af BF |
6237 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6238 | ||
64c2ce8b AK |
6239 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
6240 | const void *buf, size_t buflen, | |
6241 | int flags, int type) | |
6b3b5496 | 6242 | { |
64c2ce8b AK |
6243 | if (strcmp(key, "") != 0) |
6244 | return -EINVAL; | |
4b580ee3 | 6245 | |
2b0143b5 | 6246 | return nfs4_proc_set_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6247 | } |
6248 | ||
64c2ce8b AK |
6249 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
6250 | void *buf, size_t buflen, int type) | |
6b3b5496 | 6251 | { |
64c2ce8b AK |
6252 | if (strcmp(key, "") != 0) |
6253 | return -EINVAL; | |
aa1870af | 6254 | |
2b0143b5 | 6255 | return nfs4_proc_get_acl(d_inode(dentry), buf, buflen); |
6b3b5496 BF |
6256 | } |
6257 | ||
64c2ce8b AK |
6258 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
6259 | size_t list_len, const char *name, | |
6260 | size_t name_len, int type) | |
6b3b5496 | 6261 | { |
64c2ce8b | 6262 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 6263 | |
2b0143b5 | 6264 | if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)))) |
096455a2 | 6265 | return 0; |
64c2ce8b AK |
6266 | |
6267 | if (list && len <= list_len) | |
6268 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 6269 | return len; |
6b3b5496 BF |
6270 | } |
6271 | ||
c9bccef6 DQ |
6272 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6273 | static inline int nfs4_server_supports_labels(struct nfs_server *server) | |
6274 | { | |
6275 | return server->caps & NFS_CAP_SECURITY_LABEL; | |
6276 | } | |
6277 | ||
6278 | static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key, | |
6279 | const void *buf, size_t buflen, | |
6280 | int flags, int type) | |
6281 | { | |
6282 | if (security_ismaclabel(key)) | |
6283 | return nfs4_set_security_label(dentry, buf, buflen); | |
6284 | ||
6285 | return -EOPNOTSUPP; | |
6286 | } | |
6287 | ||
6288 | static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key, | |
6289 | void *buf, size_t buflen, int type) | |
6290 | { | |
6291 | if (security_ismaclabel(key)) | |
2b0143b5 | 6292 | return nfs4_get_security_label(d_inode(dentry), buf, buflen); |
c9bccef6 DQ |
6293 | return -EOPNOTSUPP; |
6294 | } | |
6295 | ||
6296 | static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list, | |
6297 | size_t list_len, const char *name, | |
6298 | size_t name_len, int type) | |
6299 | { | |
6300 | size_t len = 0; | |
6301 | ||
2b0143b5 DH |
6302 | if (nfs_server_capable(d_inode(dentry), NFS_CAP_SECURITY_LABEL)) { |
6303 | len = security_inode_listsecurity(d_inode(dentry), NULL, 0); | |
c9bccef6 | 6304 | if (list && len <= list_len) |
2b0143b5 | 6305 | security_inode_listsecurity(d_inode(dentry), list, len); |
c9bccef6 DQ |
6306 | } |
6307 | return len; | |
6308 | } | |
6309 | ||
6310 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6311 | .prefix = XATTR_SECURITY_PREFIX, | |
6312 | .list = nfs4_xattr_list_nfs4_label, | |
6313 | .get = nfs4_xattr_get_nfs4_label, | |
6314 | .set = nfs4_xattr_set_nfs4_label, | |
6315 | }; | |
6316 | #endif | |
6317 | ||
6318 | ||
533eb461 AA |
6319 | /* |
6320 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6321 | */ | |
69aaaae1 TM |
6322 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6323 | { | |
533eb461 AA |
6324 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6325 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6326 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6327 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6328 | return; |
6329 | ||
6330 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6331 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6332 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6333 | fattr->nlink = 2; | |
6334 | } | |
6335 | ||
f05d147f BS |
6336 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6337 | const struct qstr *name, | |
6338 | struct nfs4_fs_locations *fs_locations, | |
6339 | struct page *page) | |
683b57b4 TM |
6340 | { |
6341 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6342 | u32 bitmask[3] = { |
361e624f | 6343 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6344 | }; |
6345 | struct nfs4_fs_locations_arg args = { | |
6346 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6347 | .name = name, |
683b57b4 TM |
6348 | .page = page, |
6349 | .bitmask = bitmask, | |
6350 | }; | |
22958463 BH |
6351 | struct nfs4_fs_locations_res res = { |
6352 | .fs_locations = fs_locations, | |
6353 | }; | |
683b57b4 TM |
6354 | struct rpc_message msg = { |
6355 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6356 | .rpc_argp = &args, | |
22958463 | 6357 | .rpc_resp = &res, |
683b57b4 TM |
6358 | }; |
6359 | int status; | |
6360 | ||
3110ff80 | 6361 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6362 | |
6363 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6364 | * is not supported */ | |
6365 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6366 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6367 | else | |
6368 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6369 | ||
c228fd3a | 6370 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6371 | fs_locations->server = server; |
830b8e33 | 6372 | fs_locations->nlocations = 0; |
f05d147f | 6373 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6374 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6375 | return status; |
6376 | } | |
6377 | ||
f05d147f BS |
6378 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6379 | const struct qstr *name, | |
6380 | struct nfs4_fs_locations *fs_locations, | |
6381 | struct page *page) | |
db0a9593 BS |
6382 | { |
6383 | struct nfs4_exception exception = { }; | |
6384 | int err; | |
6385 | do { | |
078ea3df TM |
6386 | err = _nfs4_proc_fs_locations(client, dir, name, |
6387 | fs_locations, page); | |
6388 | trace_nfs4_get_fs_locations(dir, name, err); | |
6389 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6390 | &exception); |
6391 | } while (exception.retry); | |
6392 | return err; | |
6393 | } | |
6394 | ||
b03d735b CL |
6395 | /* |
6396 | * This operation also signals the server that this client is | |
6397 | * performing migration recovery. The server can stop returning | |
6398 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6399 | * appended to this compound to identify the client ID which is | |
6400 | * performing recovery. | |
6401 | */ | |
6402 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6403 | struct nfs4_fs_locations *locations, | |
6404 | struct page *page, struct rpc_cred *cred) | |
6405 | { | |
6406 | struct nfs_server *server = NFS_SERVER(inode); | |
6407 | struct rpc_clnt *clnt = server->client; | |
6408 | u32 bitmask[2] = { | |
6409 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6410 | }; | |
6411 | struct nfs4_fs_locations_arg args = { | |
6412 | .clientid = server->nfs_client->cl_clientid, | |
6413 | .fh = NFS_FH(inode), | |
6414 | .page = page, | |
6415 | .bitmask = bitmask, | |
6416 | .migration = 1, /* skip LOOKUP */ | |
6417 | .renew = 1, /* append RENEW */ | |
6418 | }; | |
6419 | struct nfs4_fs_locations_res res = { | |
6420 | .fs_locations = locations, | |
6421 | .migration = 1, | |
6422 | .renew = 1, | |
6423 | }; | |
6424 | struct rpc_message msg = { | |
6425 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6426 | .rpc_argp = &args, | |
6427 | .rpc_resp = &res, | |
6428 | .rpc_cred = cred, | |
6429 | }; | |
6430 | unsigned long now = jiffies; | |
6431 | int status; | |
6432 | ||
6433 | nfs_fattr_init(&locations->fattr); | |
6434 | locations->server = server; | |
6435 | locations->nlocations = 0; | |
6436 | ||
6437 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6438 | nfs4_set_sequence_privileged(&args.seq_args); | |
6439 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6440 | &args.seq_args, &res.seq_res); | |
6441 | if (status) | |
6442 | return status; | |
6443 | ||
6444 | renew_lease(server, now); | |
6445 | return 0; | |
6446 | } | |
6447 | ||
6448 | #ifdef CONFIG_NFS_V4_1 | |
6449 | ||
6450 | /* | |
6451 | * This operation also signals the server that this client is | |
6452 | * performing migration recovery. The server can stop asserting | |
6453 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6454 | * performing this operation is identified in the SEQUENCE | |
6455 | * operation in this compound. | |
6456 | * | |
6457 | * When the client supports GETATTR(fs_locations_info), it can | |
6458 | * be plumbed in here. | |
6459 | */ | |
6460 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6461 | struct nfs4_fs_locations *locations, | |
6462 | struct page *page, struct rpc_cred *cred) | |
6463 | { | |
6464 | struct nfs_server *server = NFS_SERVER(inode); | |
6465 | struct rpc_clnt *clnt = server->client; | |
6466 | u32 bitmask[2] = { | |
6467 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6468 | }; | |
6469 | struct nfs4_fs_locations_arg args = { | |
6470 | .fh = NFS_FH(inode), | |
6471 | .page = page, | |
6472 | .bitmask = bitmask, | |
6473 | .migration = 1, /* skip LOOKUP */ | |
6474 | }; | |
6475 | struct nfs4_fs_locations_res res = { | |
6476 | .fs_locations = locations, | |
6477 | .migration = 1, | |
6478 | }; | |
6479 | struct rpc_message msg = { | |
6480 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6481 | .rpc_argp = &args, | |
6482 | .rpc_resp = &res, | |
6483 | .rpc_cred = cred, | |
6484 | }; | |
6485 | int status; | |
6486 | ||
6487 | nfs_fattr_init(&locations->fattr); | |
6488 | locations->server = server; | |
6489 | locations->nlocations = 0; | |
6490 | ||
6491 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6492 | nfs4_set_sequence_privileged(&args.seq_args); | |
6493 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6494 | &args.seq_args, &res.seq_res); | |
6495 | if (status == NFS4_OK && | |
6496 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6497 | status = -NFS4ERR_LEASE_MOVED; | |
6498 | return status; | |
6499 | } | |
6500 | ||
6501 | #endif /* CONFIG_NFS_V4_1 */ | |
6502 | ||
6503 | /** | |
6504 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6505 | * @inode: inode on FSID that is migrating | |
6506 | * @locations: result of query | |
6507 | * @page: buffer | |
6508 | * @cred: credential to use for this operation | |
6509 | * | |
6510 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6511 | * operation failed, or a negative errno if a local error occurred. | |
6512 | * | |
6513 | * On success, "locations" is filled in, but if the server has | |
6514 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6515 | * asserted. | |
6516 | * | |
6517 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6518 | * from this client that require migration recovery. | |
6519 | */ | |
6520 | int nfs4_proc_get_locations(struct inode *inode, | |
6521 | struct nfs4_fs_locations *locations, | |
6522 | struct page *page, struct rpc_cred *cred) | |
6523 | { | |
6524 | struct nfs_server *server = NFS_SERVER(inode); | |
6525 | struct nfs_client *clp = server->nfs_client; | |
6526 | const struct nfs4_mig_recovery_ops *ops = | |
6527 | clp->cl_mvops->mig_recovery_ops; | |
6528 | struct nfs4_exception exception = { }; | |
6529 | int status; | |
6530 | ||
6531 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6532 | (unsigned long long)server->fsid.major, | |
6533 | (unsigned long long)server->fsid.minor, | |
6534 | clp->cl_hostname); | |
6535 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6536 | ||
6537 | do { | |
6538 | status = ops->get_locations(inode, locations, page, cred); | |
6539 | if (status != -NFS4ERR_DELAY) | |
6540 | break; | |
6541 | nfs4_handle_exception(server, status, &exception); | |
6542 | } while (exception.retry); | |
6543 | return status; | |
6544 | } | |
6545 | ||
44c99933 CL |
6546 | /* |
6547 | * This operation also signals the server that this client is | |
6548 | * performing "lease moved" recovery. The server can stop | |
6549 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6550 | * is appended to this compound to identify the client ID which is | |
6551 | * performing recovery. | |
6552 | */ | |
6553 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6554 | { | |
6555 | struct nfs_server *server = NFS_SERVER(inode); | |
6556 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6557 | struct rpc_clnt *clnt = server->client; | |
6558 | struct nfs4_fsid_present_arg args = { | |
6559 | .fh = NFS_FH(inode), | |
6560 | .clientid = clp->cl_clientid, | |
6561 | .renew = 1, /* append RENEW */ | |
6562 | }; | |
6563 | struct nfs4_fsid_present_res res = { | |
6564 | .renew = 1, | |
6565 | }; | |
6566 | struct rpc_message msg = { | |
6567 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6568 | .rpc_argp = &args, | |
6569 | .rpc_resp = &res, | |
6570 | .rpc_cred = cred, | |
6571 | }; | |
6572 | unsigned long now = jiffies; | |
6573 | int status; | |
6574 | ||
6575 | res.fh = nfs_alloc_fhandle(); | |
6576 | if (res.fh == NULL) | |
6577 | return -ENOMEM; | |
6578 | ||
6579 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6580 | nfs4_set_sequence_privileged(&args.seq_args); | |
6581 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6582 | &args.seq_args, &res.seq_res); | |
6583 | nfs_free_fhandle(res.fh); | |
6584 | if (status) | |
6585 | return status; | |
6586 | ||
6587 | do_renew_lease(clp, now); | |
6588 | return 0; | |
6589 | } | |
6590 | ||
6591 | #ifdef CONFIG_NFS_V4_1 | |
6592 | ||
6593 | /* | |
6594 | * This operation also signals the server that this client is | |
6595 | * performing "lease moved" recovery. The server can stop asserting | |
6596 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6597 | * this operation is identified in the SEQUENCE operation in this | |
6598 | * compound. | |
6599 | */ | |
6600 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6601 | { | |
6602 | struct nfs_server *server = NFS_SERVER(inode); | |
6603 | struct rpc_clnt *clnt = server->client; | |
6604 | struct nfs4_fsid_present_arg args = { | |
6605 | .fh = NFS_FH(inode), | |
6606 | }; | |
6607 | struct nfs4_fsid_present_res res = { | |
6608 | }; | |
6609 | struct rpc_message msg = { | |
6610 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6611 | .rpc_argp = &args, | |
6612 | .rpc_resp = &res, | |
6613 | .rpc_cred = cred, | |
6614 | }; | |
6615 | int status; | |
6616 | ||
6617 | res.fh = nfs_alloc_fhandle(); | |
6618 | if (res.fh == NULL) | |
6619 | return -ENOMEM; | |
6620 | ||
6621 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6622 | nfs4_set_sequence_privileged(&args.seq_args); | |
6623 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6624 | &args.seq_args, &res.seq_res); | |
6625 | nfs_free_fhandle(res.fh); | |
6626 | if (status == NFS4_OK && | |
6627 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6628 | status = -NFS4ERR_LEASE_MOVED; | |
6629 | return status; | |
6630 | } | |
6631 | ||
6632 | #endif /* CONFIG_NFS_V4_1 */ | |
6633 | ||
6634 | /** | |
6635 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6636 | * @inode: inode on FSID to check | |
6637 | * @cred: credential to use for this operation | |
6638 | * | |
6639 | * Server indicates whether the FSID is present, moved, or not | |
6640 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6641 | * condition for this client ID. | |
6642 | * | |
6643 | * Returns NFS4_OK if the FSID is present on this server, | |
6644 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6645 | * NFS4ERR code if some error occurred on the server, or a | |
6646 | * negative errno if a local failure occurred. | |
6647 | */ | |
6648 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6649 | { | |
6650 | struct nfs_server *server = NFS_SERVER(inode); | |
6651 | struct nfs_client *clp = server->nfs_client; | |
6652 | const struct nfs4_mig_recovery_ops *ops = | |
6653 | clp->cl_mvops->mig_recovery_ops; | |
6654 | struct nfs4_exception exception = { }; | |
6655 | int status; | |
6656 | ||
6657 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6658 | (unsigned long long)server->fsid.major, | |
6659 | (unsigned long long)server->fsid.minor, | |
6660 | clp->cl_hostname); | |
6661 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6662 | ||
6663 | do { | |
6664 | status = ops->fsid_present(inode, cred); | |
6665 | if (status != -NFS4ERR_DELAY) | |
6666 | break; | |
6667 | nfs4_handle_exception(server, status, &exception); | |
6668 | } while (exception.retry); | |
6669 | return status; | |
6670 | } | |
6671 | ||
5ec16a85 | 6672 | /** |
a5250def WAA |
6673 | * If 'use_integrity' is true and the state managment nfs_client |
6674 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6675 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6676 | * Considerations sections. Otherwise, just use the user cred with the | |
6677 | * filesystem's rpc_client. | |
5ec16a85 | 6678 | */ |
a5250def | 6679 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6680 | { |
6681 | int status; | |
6682 | struct nfs4_secinfo_arg args = { | |
6683 | .dir_fh = NFS_FH(dir), | |
6684 | .name = name, | |
6685 | }; | |
6686 | struct nfs4_secinfo_res res = { | |
6687 | .flavors = flavors, | |
6688 | }; | |
6689 | struct rpc_message msg = { | |
6690 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6691 | .rpc_argp = &args, | |
6692 | .rpc_resp = &res, | |
6693 | }; | |
a5250def | 6694 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6695 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6696 | |
6697 | if (use_integrity) { | |
6698 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6699 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6700 | msg.rpc_cred = cred; | |
a5250def | 6701 | } |
5a5ea0d4 BS |
6702 | |
6703 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6704 | |
6705 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6706 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6707 | ||
a5250def WAA |
6708 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6709 | &res.seq_res, 0); | |
5a5ea0d4 | 6710 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6711 | |
7cb852df WAA |
6712 | if (cred) |
6713 | put_rpccred(cred); | |
a5250def | 6714 | |
5a5ea0d4 BS |
6715 | return status; |
6716 | } | |
6717 | ||
72de53ec BS |
6718 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6719 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6720 | { |
6721 | struct nfs4_exception exception = { }; | |
6722 | int err; | |
6723 | do { | |
a5250def WAA |
6724 | err = -NFS4ERR_WRONGSEC; |
6725 | ||
6726 | /* try to use integrity protection with machine cred */ | |
6727 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6728 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6729 | ||
6730 | /* | |
6731 | * if unable to use integrity protection, or SECINFO with | |
6732 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6733 | * disallowed by spec, but exists in deployed servers) use | |
6734 | * the current filesystem's rpc_client and the user cred. | |
6735 | */ | |
6736 | if (err == -NFS4ERR_WRONGSEC) | |
6737 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6738 | ||
078ea3df TM |
6739 | trace_nfs4_secinfo(dir, name, err); |
6740 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6741 | &exception); |
6742 | } while (exception.retry); | |
6743 | return err; | |
6744 | } | |
6745 | ||
557134a3 | 6746 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6747 | /* |
6748 | * Check the exchange flags returned by the server for invalid flags, having | |
6749 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6750 | * DS flags set. | |
6751 | */ | |
6752 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6753 | { | |
6754 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6755 | goto out_inval; | |
6756 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6757 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6758 | goto out_inval; | |
6759 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6760 | goto out_inval; | |
6761 | return NFS_OK; | |
6762 | out_inval: | |
6763 | return -NFS4ERR_INVAL; | |
6764 | } | |
6765 | ||
78fe0f41 | 6766 | static bool |
79d4e1f0 CL |
6767 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6768 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6769 | { |
6770 | if (a->server_scope_sz == b->server_scope_sz && | |
6771 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6772 | return true; | |
6773 | ||
6774 | return false; | |
6775 | } | |
6776 | ||
7c44f1ae WAA |
6777 | /* |
6778 | * nfs4_proc_bind_conn_to_session() | |
6779 | * | |
6780 | * The 4.1 client currently uses the same TCP connection for the | |
6781 | * fore and backchannel. | |
6782 | */ | |
2cf047c9 | 6783 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
6784 | { |
6785 | int status; | |
71a097c6 TM |
6786 | struct nfs41_bind_conn_to_session_args args = { |
6787 | .client = clp, | |
6788 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6789 | }; | |
7c44f1ae WAA |
6790 | struct nfs41_bind_conn_to_session_res res; |
6791 | struct rpc_message msg = { | |
6792 | .rpc_proc = | |
6793 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6794 | .rpc_argp = &args, |
7c44f1ae | 6795 | .rpc_resp = &res, |
2cf047c9 | 6796 | .rpc_cred = cred, |
7c44f1ae WAA |
6797 | }; |
6798 | ||
6799 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6800 | |
71a097c6 TM |
6801 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6802 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6803 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae WAA |
6804 | |
6805 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 6806 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6807 | if (status == 0) { |
71a097c6 | 6808 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6809 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6810 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6811 | status = -EIO; | |
71a097c6 | 6812 | goto out; |
7c44f1ae | 6813 | } |
71a097c6 | 6814 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6815 | dprintk("NFS: %s: Unexpected direction from server\n", |
6816 | __func__); | |
6817 | status = -EIO; | |
71a097c6 | 6818 | goto out; |
7c44f1ae | 6819 | } |
71a097c6 | 6820 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6821 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6822 | __func__); | |
6823 | status = -EIO; | |
71a097c6 | 6824 | goto out; |
7c44f1ae WAA |
6825 | } |
6826 | } | |
7c44f1ae WAA |
6827 | out: |
6828 | dprintk("<-- %s status= %d\n", __func__, status); | |
6829 | return status; | |
6830 | } | |
6831 | ||
99fe60d0 | 6832 | /* |
fa940720 WAA |
6833 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6834 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6835 | */ |
6836 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6837 | .how = SP4_MACH_CRED, | |
6838 | .enforce.u.words = { | |
6839 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6840 | 1 << (OP_EXCHANGE_ID - 32) | | |
6841 | 1 << (OP_CREATE_SESSION - 32) | | |
6842 | 1 << (OP_DESTROY_SESSION - 32) | | |
6843 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6844 | }, |
6845 | .allow.u.words = { | |
6846 | [0] = 1 << (OP_CLOSE) | | |
a0279625 WAA |
6847 | 1 << (OP_LOCKU) | |
6848 | 1 << (OP_COMMIT), | |
8b5bee2e | 6849 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 WAA |
6850 | 1 << (OP_SECINFO_NO_NAME - 32) | |
6851 | 1 << (OP_TEST_STATEID - 32) | | |
a0279625 WAA |
6852 | 1 << (OP_FREE_STATEID - 32) | |
6853 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6854 | } |
6855 | }; | |
6856 | ||
6857 | /* | |
6858 | * Select the state protection mode for client `clp' given the server results | |
6859 | * from exchange_id in `sp'. | |
99fe60d0 | 6860 | * |
2031cd1a WAA |
6861 | * Returns 0 on success, negative errno otherwise. |
6862 | */ | |
6863 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6864 | struct nfs41_state_protection *sp) | |
6865 | { | |
6866 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6867 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6868 | 1 << (OP_EXCHANGE_ID - 32) | | |
6869 | 1 << (OP_CREATE_SESSION - 32) | | |
6870 | 1 << (OP_DESTROY_SESSION - 32) | | |
6871 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6872 | }; | |
6873 | unsigned int i; | |
6874 | ||
6875 | if (sp->how == SP4_MACH_CRED) { | |
6876 | /* Print state protect result */ | |
6877 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6878 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6879 | if (test_bit(i, sp->enforce.u.longs)) | |
6880 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6881 | if (test_bit(i, sp->allow.u.longs)) | |
6882 | dfprintk(MOUNT, " allow op %d\n", i); | |
6883 | } | |
6884 | ||
6885 | /* make sure nothing is on enforce list that isn't supported */ | |
6886 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6887 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6888 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6889 | return -EINVAL; | |
6890 | } | |
6891 | } | |
6892 | ||
6893 | /* | |
6894 | * Minimal mode - state operations are allowed to use machine | |
6895 | * credential. Note this already happens by default, so the | |
6896 | * client doesn't have to do anything more than the negotiation. | |
6897 | * | |
6898 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6899 | * we're already using the machine cred for exchange_id | |
6900 | * and will never use a different cred. | |
6901 | */ | |
6902 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6903 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6904 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6905 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6906 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6907 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6908 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
6909 | } else { | |
6910 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6911 | return -EINVAL; | |
6912 | } | |
fa940720 WAA |
6913 | |
6914 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
6915 | test_bit(OP_LOCKU, sp->allow.u.longs)) { | |
6916 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
6917 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
6918 | } | |
8b5bee2e WAA |
6919 | |
6920 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && | |
6921 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
6922 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
6923 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
6924 | } | |
3787d506 WAA |
6925 | |
6926 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
6927 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
6928 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
6929 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
6930 | } | |
8c21c62c WAA |
6931 | |
6932 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
6933 | dfprintk(MOUNT, " write mode enabled\n"); | |
6934 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
6935 | } | |
6936 | ||
6937 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
6938 | dfprintk(MOUNT, " commit mode enabled\n"); | |
6939 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
6940 | } | |
2031cd1a WAA |
6941 | } |
6942 | ||
6943 | return 0; | |
6944 | } | |
6945 | ||
6946 | /* | |
6947 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 6948 | * |
2031cd1a | 6949 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 6950 | */ |
2031cd1a WAA |
6951 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
6952 | u32 sp4_how) | |
99fe60d0 BH |
6953 | { |
6954 | nfs4_verifier verifier; | |
6955 | struct nfs41_exchange_id_args args = { | |
cd93710e | 6956 | .verifier = &verifier, |
99fe60d0 | 6957 | .client = clp, |
cd3fadec | 6958 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 6959 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
6960 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
6961 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
6962 | #else | |
6963 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
6964 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
6965 | #endif | |
99fe60d0 BH |
6966 | }; |
6967 | struct nfs41_exchange_id_res res = { | |
32b01310 | 6968 | 0 |
99fe60d0 BH |
6969 | }; |
6970 | int status; | |
6971 | struct rpc_message msg = { | |
6972 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
6973 | .rpc_argp = &args, | |
6974 | .rpc_resp = &res, | |
6975 | .rpc_cred = cred, | |
6976 | }; | |
99fe60d0 | 6977 | |
f092075d | 6978 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
6979 | |
6980 | status = nfs4_init_uniform_client_string(clp); | |
6981 | if (status) | |
3a6bb738 | 6982 | goto out; |
3a6bb738 JL |
6983 | |
6984 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 6985 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 6986 | clp->cl_owner_id); |
99fe60d0 | 6987 | |
acdeb69d | 6988 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 6989 | GFP_NOFS); |
acdeb69d | 6990 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
6991 | status = -ENOMEM; |
6992 | goto out; | |
6993 | } | |
78fe0f41 | 6994 | |
79d4e1f0 | 6995 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 6996 | GFP_NOFS); |
177313f1 | 6997 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 6998 | status = -ENOMEM; |
acdeb69d | 6999 | goto out_server_owner; |
abe9a6d5 | 7000 | } |
78fe0f41 | 7001 | |
bbafffd2 | 7002 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 7003 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
7004 | status = -ENOMEM; |
7005 | goto out_server_scope; | |
7006 | } | |
7007 | ||
2031cd1a WAA |
7008 | switch (sp4_how) { |
7009 | case SP4_NONE: | |
7010 | args.state_protect.how = SP4_NONE; | |
7011 | break; | |
7012 | ||
7013 | case SP4_MACH_CRED: | |
7014 | args.state_protect = nfs4_sp4_mach_cred_request; | |
7015 | break; | |
7016 | ||
7017 | default: | |
7018 | /* unsupported! */ | |
7019 | WARN_ON_ONCE(1); | |
7020 | status = -EINVAL; | |
6b55970b | 7021 | goto out_impl_id; |
2031cd1a WAA |
7022 | } |
7023 | ||
1bd714f2 | 7024 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7025 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 7026 | if (status == 0) |
32b01310 | 7027 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 7028 | |
2031cd1a WAA |
7029 | if (status == 0) |
7030 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
7031 | ||
acdeb69d | 7032 | if (status == 0) { |
32b01310 | 7033 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
7034 | clp->cl_exchange_flags = res.flags; |
7035 | /* Client ID is not confirmed */ | |
7036 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7037 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7038 | &clp->cl_session->session_state); | |
32b01310 | 7039 | clp->cl_seqid = res.seqid; |
e11259f9 | 7040 | } |
32b01310 | 7041 | |
acdeb69d CL |
7042 | kfree(clp->cl_serverowner); |
7043 | clp->cl_serverowner = res.server_owner; | |
7044 | res.server_owner = NULL; | |
78fe0f41 | 7045 | |
7d2ed9ac | 7046 | /* use the most recent implementation id */ |
59155546 CL |
7047 | kfree(clp->cl_implid); |
7048 | clp->cl_implid = res.impl_id; | |
6b55970b | 7049 | res.impl_id = NULL; |
7d2ed9ac | 7050 | |
177313f1 | 7051 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7052 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7053 | res.server_scope)) { |
7054 | dprintk("%s: server_scope mismatch detected\n", | |
7055 | __func__); | |
7056 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7057 | kfree(clp->cl_serverscope); |
7058 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7059 | } |
7060 | ||
177313f1 | 7061 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7062 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7063 | res.server_scope = NULL; |
abe9a6d5 | 7064 | } |
6b55970b | 7065 | } |
7d2ed9ac | 7066 | |
6b55970b KM |
7067 | out_impl_id: |
7068 | kfree(res.impl_id); | |
7d2ed9ac | 7069 | out_server_scope: |
abe9a6d5 | 7070 | kfree(res.server_scope); |
6b55970b KM |
7071 | out_server_owner: |
7072 | kfree(res.server_owner); | |
abe9a6d5 | 7073 | out: |
177313f1 | 7074 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7075 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7076 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7077 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7078 | clp->cl_implid->date.seconds, |
7079 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7080 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7081 | return status; |
7082 | } | |
7083 | ||
2031cd1a WAA |
7084 | /* |
7085 | * nfs4_proc_exchange_id() | |
7086 | * | |
7087 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7088 | * | |
7089 | * Since the clientid has expired, all compounds using sessions | |
7090 | * associated with the stale clientid will be returning | |
7091 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7092 | * be in some phase of session reset. | |
7093 | * | |
7094 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7095 | */ | |
7096 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7097 | { | |
7098 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7099 | int status; | |
7100 | ||
7101 | /* try SP4_MACH_CRED if krb5i/p */ | |
7102 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7103 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7104 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7105 | if (!status) | |
7106 | return 0; | |
7107 | } | |
7108 | ||
7109 | /* try SP4_NONE */ | |
7110 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7111 | } | |
7112 | ||
66245539 TM |
7113 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7114 | struct rpc_cred *cred) | |
7115 | { | |
7116 | struct rpc_message msg = { | |
7117 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7118 | .rpc_argp = clp, | |
7119 | .rpc_cred = cred, | |
7120 | }; | |
7121 | int status; | |
7122 | ||
7123 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7124 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7125 | if (status) |
02c67525 | 7126 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7127 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7128 | return status; | |
7129 | } | |
7130 | ||
7131 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7132 | struct rpc_cred *cred) | |
7133 | { | |
7134 | unsigned int loop; | |
7135 | int ret; | |
7136 | ||
7137 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7138 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7139 | switch (ret) { | |
7140 | case -NFS4ERR_DELAY: | |
7141 | case -NFS4ERR_CLIENTID_BUSY: | |
7142 | ssleep(1); | |
7143 | break; | |
7144 | default: | |
7145 | return ret; | |
7146 | } | |
7147 | } | |
7148 | return 0; | |
7149 | } | |
7150 | ||
7151 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7152 | { | |
7153 | struct rpc_cred *cred; | |
7154 | int ret = 0; | |
7155 | ||
7156 | if (clp->cl_mvops->minor_version < 1) | |
7157 | goto out; | |
7158 | if (clp->cl_exchange_flags == 0) | |
7159 | goto out; | |
05f4c350 CL |
7160 | if (clp->cl_preserve_clid) |
7161 | goto out; | |
73d8bde5 | 7162 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7163 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7164 | if (cred) | |
7165 | put_rpccred(cred); | |
7166 | switch (ret) { | |
7167 | case 0: | |
7168 | case -NFS4ERR_STALE_CLIENTID: | |
7169 | clp->cl_exchange_flags = 0; | |
7170 | } | |
7171 | out: | |
7172 | return ret; | |
7173 | } | |
7174 | ||
2050f0cc AA |
7175 | struct nfs4_get_lease_time_data { |
7176 | struct nfs4_get_lease_time_args *args; | |
7177 | struct nfs4_get_lease_time_res *res; | |
7178 | struct nfs_client *clp; | |
7179 | }; | |
7180 | ||
7181 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7182 | void *calldata) | |
7183 | { | |
2050f0cc AA |
7184 | struct nfs4_get_lease_time_data *data = |
7185 | (struct nfs4_get_lease_time_data *)calldata; | |
7186 | ||
7187 | dprintk("--> %s\n", __func__); | |
7188 | /* just setup sequence, do not trigger session recovery | |
7189 | since we're invoked within one */ | |
d9afbd1b TM |
7190 | nfs41_setup_sequence(data->clp->cl_session, |
7191 | &data->args->la_seq_args, | |
7192 | &data->res->lr_seq_res, | |
7193 | task); | |
2050f0cc AA |
7194 | dprintk("<-- %s\n", __func__); |
7195 | } | |
7196 | ||
7197 | /* | |
7198 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7199 | * from sequence operation or clientid errors. | |
7200 | */ | |
7201 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7202 | { | |
7203 | struct nfs4_get_lease_time_data *data = | |
7204 | (struct nfs4_get_lease_time_data *)calldata; | |
7205 | ||
7206 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7207 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7208 | return; | |
2050f0cc AA |
7209 | switch (task->tk_status) { |
7210 | case -NFS4ERR_DELAY: | |
7211 | case -NFS4ERR_GRACE: | |
7212 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7213 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7214 | task->tk_status = 0; | |
a8a4ae3a AA |
7215 | /* fall through */ |
7216 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7217 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7218 | return; |
7219 | } | |
2050f0cc AA |
7220 | dprintk("<-- %s\n", __func__); |
7221 | } | |
7222 | ||
17280175 | 7223 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7224 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7225 | .rpc_call_done = nfs4_get_lease_time_done, | |
7226 | }; | |
7227 | ||
7228 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7229 | { | |
7230 | struct rpc_task *task; | |
7231 | struct nfs4_get_lease_time_args args; | |
7232 | struct nfs4_get_lease_time_res res = { | |
7233 | .lr_fsinfo = fsinfo, | |
7234 | }; | |
7235 | struct nfs4_get_lease_time_data data = { | |
7236 | .args = &args, | |
7237 | .res = &res, | |
7238 | .clp = clp, | |
7239 | }; | |
7240 | struct rpc_message msg = { | |
7241 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7242 | .rpc_argp = &args, | |
7243 | .rpc_resp = &res, | |
7244 | }; | |
7245 | struct rpc_task_setup task_setup = { | |
7246 | .rpc_client = clp->cl_rpcclient, | |
7247 | .rpc_message = &msg, | |
7248 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7249 | .callback_data = &data, |
7250 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7251 | }; |
7252 | int status; | |
7253 | ||
a9c92d6b | 7254 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7255 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7256 | dprintk("--> %s\n", __func__); |
7257 | task = rpc_run_task(&task_setup); | |
7258 | ||
7259 | if (IS_ERR(task)) | |
7260 | status = PTR_ERR(task); | |
7261 | else { | |
7262 | status = task->tk_status; | |
7263 | rpc_put_task(task); | |
7264 | } | |
7265 | dprintk("<-- %s return %d\n", __func__, status); | |
7266 | ||
7267 | return status; | |
7268 | } | |
7269 | ||
fc931582 AA |
7270 | /* |
7271 | * Initialize the values to be used by the client in CREATE_SESSION | |
7272 | * If nfs4_init_session set the fore channel request and response sizes, | |
7273 | * use them. | |
7274 | * | |
7275 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7276 | * always set csa_cachethis to FALSE because the current implementation | |
7277 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7278 | */ | |
7279 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
7280 | { | |
18aad3d5 AA |
7281 | unsigned int max_rqst_sz, max_resp_sz; |
7282 | ||
7283 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7284 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7285 | |
fc931582 | 7286 | /* Fore channel attributes */ |
18aad3d5 AA |
7287 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7288 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7289 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7290 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7291 | |
7292 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7293 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7294 | __func__, |
7295 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7296 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7297 | |
7298 | /* Back channel attributes */ | |
fc931582 AA |
7299 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
7300 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
7301 | args->bc_attrs.max_resp_sz_cached = 0; | |
7302 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
7303 | args->bc_attrs.max_reqs = 1; | |
7304 | ||
7305 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7306 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7307 | __func__, | |
7308 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7309 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7310 | args->bc_attrs.max_reqs); | |
7311 | } | |
7312 | ||
79969dd1 TM |
7313 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7314 | struct nfs41_create_session_res *res) | |
8d35301d | 7315 | { |
43c2e885 | 7316 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7317 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7318 | |
43c2e885 BF |
7319 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7320 | return -EINVAL; | |
7321 | /* | |
7322 | * Our requested max_ops is the minimum we need; we're not | |
7323 | * prepared to break up compounds into smaller pieces than that. | |
7324 | * So, no point even trying to continue if the server won't | |
7325 | * cooperate: | |
7326 | */ | |
7327 | if (rcvd->max_ops < sent->max_ops) | |
7328 | return -EINVAL; | |
7329 | if (rcvd->max_reqs == 0) | |
7330 | return -EINVAL; | |
b4b9a0c1 VG |
7331 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7332 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7333 | return 0; |
8d35301d AA |
7334 | } |
7335 | ||
79969dd1 TM |
7336 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7337 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7338 | { |
7339 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7340 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7341 | |
b1c0df5f TM |
7342 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7343 | goto out; | |
43c2e885 BF |
7344 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7345 | return -EINVAL; | |
7346 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7347 | return -EINVAL; | |
7348 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7349 | return -EINVAL; | |
7350 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7351 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7352 | return -EINVAL; |
b4b9a0c1 | 7353 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7354 | return -EINVAL; |
b1c0df5f | 7355 | out: |
43c2e885 BF |
7356 | return 0; |
7357 | } | |
8d35301d | 7358 | |
8d35301d | 7359 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7360 | struct nfs41_create_session_res *res) |
8d35301d | 7361 | { |
43c2e885 | 7362 | int ret; |
8d35301d | 7363 | |
79969dd1 | 7364 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7365 | if (ret) |
7366 | return ret; | |
79969dd1 TM |
7367 | return nfs4_verify_back_channel_attrs(args, res); |
7368 | } | |
7369 | ||
7370 | static void nfs4_update_session(struct nfs4_session *session, | |
7371 | struct nfs41_create_session_res *res) | |
7372 | { | |
7373 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7374 | /* Mark client id and session as being confirmed */ |
7375 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7376 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7377 | session->flags = res->flags; |
7378 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7379 | if (res->flags & SESSION4_BACK_CHAN) |
7380 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7381 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7382 | } |
7383 | ||
848f5bda TM |
7384 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7385 | struct rpc_cred *cred) | |
fc931582 AA |
7386 | { |
7387 | struct nfs4_session *session = clp->cl_session; | |
7388 | struct nfs41_create_session_args args = { | |
7389 | .client = clp, | |
79969dd1 TM |
7390 | .clientid = clp->cl_clientid, |
7391 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7392 | .cb_program = NFS4_CALLBACK, |
7393 | }; | |
79969dd1 TM |
7394 | struct nfs41_create_session_res res; |
7395 | ||
fc931582 AA |
7396 | struct rpc_message msg = { |
7397 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7398 | .rpc_argp = &args, | |
7399 | .rpc_resp = &res, | |
848f5bda | 7400 | .rpc_cred = cred, |
fc931582 AA |
7401 | }; |
7402 | int status; | |
7403 | ||
7404 | nfs4_init_channel_attrs(&args); | |
0f91421e | 7405 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7406 | |
1bd714f2 | 7407 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7408 | trace_nfs4_create_session(clp, status); |
fc931582 | 7409 | |
43095d39 | 7410 | if (!status) { |
8d35301d | 7411 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7412 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7413 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7414 | if (clp->cl_seqid == res.seqid) |
7415 | clp->cl_seqid++; | |
7416 | if (status) | |
7417 | goto out; | |
7418 | nfs4_update_session(session, &res); | |
fc931582 | 7419 | } |
79969dd1 | 7420 | out: |
fc931582 AA |
7421 | return status; |
7422 | } | |
7423 | ||
7424 | /* | |
7425 | * Issues a CREATE_SESSION operation to the server. | |
7426 | * It is the responsibility of the caller to verify the session is | |
7427 | * expired before calling this routine. | |
7428 | */ | |
848f5bda | 7429 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7430 | { |
7431 | int status; | |
7432 | unsigned *ptr; | |
fc931582 AA |
7433 | struct nfs4_session *session = clp->cl_session; |
7434 | ||
7435 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7436 | ||
848f5bda | 7437 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7438 | if (status) |
7439 | goto out; | |
7440 | ||
aacd5537 AA |
7441 | /* Init or reset the session slot tables */ |
7442 | status = nfs4_setup_session_slot_tables(session); | |
7443 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7444 | if (status) |
7445 | goto out; | |
7446 | ||
7447 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7448 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7449 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7450 | out: |
7451 | dprintk("<-- %s\n", __func__); | |
7452 | return status; | |
7453 | } | |
7454 | ||
0f3e66c6 AA |
7455 | /* |
7456 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7457 | * The caller must serialize access to this routine. | |
7458 | */ | |
848f5bda TM |
7459 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7460 | struct rpc_cred *cred) | |
0f3e66c6 | 7461 | { |
848f5bda TM |
7462 | struct rpc_message msg = { |
7463 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7464 | .rpc_argp = session, | |
7465 | .rpc_cred = cred, | |
7466 | }; | |
0f3e66c6 | 7467 | int status = 0; |
0f3e66c6 AA |
7468 | |
7469 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7470 | ||
7471 | /* session is still being setup */ | |
e11259f9 TM |
7472 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7473 | return 0; | |
0f3e66c6 | 7474 | |
1bd714f2 | 7475 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7476 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7477 | |
7478 | if (status) | |
08106ac7 | 7479 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7480 | "Session has been destroyed regardless...\n", status); |
7481 | ||
7482 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7483 | return status; | |
7484 | } | |
7485 | ||
fc01cea9 AA |
7486 | /* |
7487 | * Renew the cl_session lease. | |
7488 | */ | |
d5f8d3fe TM |
7489 | struct nfs4_sequence_data { |
7490 | struct nfs_client *clp; | |
7491 | struct nfs4_sequence_args args; | |
7492 | struct nfs4_sequence_res res; | |
7493 | }; | |
7494 | ||
dc96aef9 AB |
7495 | static void nfs41_sequence_release(void *data) |
7496 | { | |
d5f8d3fe TM |
7497 | struct nfs4_sequence_data *calldata = data; |
7498 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7499 | |
7135840f AB |
7500 | if (atomic_read(&clp->cl_count) > 1) |
7501 | nfs4_schedule_state_renewal(clp); | |
7502 | nfs_put_client(clp); | |
d5f8d3fe | 7503 | kfree(calldata); |
dc96aef9 AB |
7504 | } |
7505 | ||
aa5190d0 TM |
7506 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7507 | { | |
7508 | switch(task->tk_status) { | |
7509 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7510 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7511 | return -EAGAIN; | |
7512 | default: | |
0400a6b0 | 7513 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7514 | } |
7515 | return 0; | |
7516 | } | |
7517 | ||
dc96aef9 | 7518 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7519 | { |
d5f8d3fe TM |
7520 | struct nfs4_sequence_data *calldata = data; |
7521 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7522 | |
14516c3a TM |
7523 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7524 | return; | |
fc01cea9 | 7525 | |
c6d01c6f | 7526 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7527 | if (task->tk_status < 0) { |
7528 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7529 | if (atomic_read(&clp->cl_count) == 1) |
7530 | goto out; | |
fc01cea9 | 7531 | |
aa5190d0 TM |
7532 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7533 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7534 | return; |
7535 | } | |
7536 | } | |
fc01cea9 | 7537 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7538 | out: |
fc01cea9 AA |
7539 | dprintk("<-- %s\n", __func__); |
7540 | } | |
7541 | ||
7542 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7543 | { | |
d5f8d3fe TM |
7544 | struct nfs4_sequence_data *calldata = data; |
7545 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7546 | struct nfs4_sequence_args *args; |
7547 | struct nfs4_sequence_res *res; | |
7548 | ||
fc01cea9 AA |
7549 | args = task->tk_msg.rpc_argp; |
7550 | res = task->tk_msg.rpc_resp; | |
7551 | ||
d9afbd1b | 7552 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7553 | } |
7554 | ||
7555 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7556 | .rpc_call_done = nfs41_sequence_call_done, | |
7557 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7558 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7559 | }; |
7560 | ||
8fe72bac TM |
7561 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7562 | struct rpc_cred *cred, | |
7563 | bool is_privileged) | |
fc01cea9 | 7564 | { |
d5f8d3fe | 7565 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7566 | struct rpc_message msg = { |
7567 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7568 | .rpc_cred = cred, | |
7569 | }; | |
71ac6da9 TM |
7570 | struct rpc_task_setup task_setup_data = { |
7571 | .rpc_client = clp->cl_rpcclient, | |
7572 | .rpc_message = &msg, | |
8fe72bac | 7573 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7574 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7575 | }; |
fc01cea9 | 7576 | |
7135840f | 7577 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7578 | return ERR_PTR(-EIO); |
dfb4f309 | 7579 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7580 | if (calldata == NULL) { |
7135840f | 7581 | nfs_put_client(clp); |
71ac6da9 | 7582 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7583 | } |
a9c92d6b | 7584 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7585 | if (is_privileged) |
7586 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7587 | msg.rpc_argp = &calldata->args; |
7588 | msg.rpc_resp = &calldata->res; | |
7589 | calldata->clp = clp; | |
71ac6da9 | 7590 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7591 | |
71ac6da9 TM |
7592 | return rpc_run_task(&task_setup_data); |
7593 | } | |
7594 | ||
2f60ea6b | 7595 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7596 | { |
7597 | struct rpc_task *task; | |
7598 | int ret = 0; | |
7599 | ||
2f60ea6b | 7600 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7601 | return -EAGAIN; |
8fe72bac | 7602 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7603 | if (IS_ERR(task)) |
7604 | ret = PTR_ERR(task); | |
7605 | else | |
bf294b41 | 7606 | rpc_put_task_async(task); |
71ac6da9 TM |
7607 | dprintk("<-- %s status=%d\n", __func__, ret); |
7608 | return ret; | |
7609 | } | |
7610 | ||
7611 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7612 | { | |
7613 | struct rpc_task *task; | |
7614 | int ret; | |
7615 | ||
8fe72bac | 7616 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7617 | if (IS_ERR(task)) { |
7618 | ret = PTR_ERR(task); | |
7619 | goto out; | |
7620 | } | |
7621 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7622 | if (!ret) |
71ac6da9 TM |
7623 | ret = task->tk_status; |
7624 | rpc_put_task(task); | |
7625 | out: | |
7626 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7627 | return ret; | |
fc01cea9 AA |
7628 | } |
7629 | ||
fce5c838 RL |
7630 | struct nfs4_reclaim_complete_data { |
7631 | struct nfs_client *clp; | |
7632 | struct nfs41_reclaim_complete_args arg; | |
7633 | struct nfs41_reclaim_complete_res res; | |
7634 | }; | |
7635 | ||
7636 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7637 | { | |
7638 | struct nfs4_reclaim_complete_data *calldata = data; | |
7639 | ||
d9afbd1b TM |
7640 | nfs41_setup_sequence(calldata->clp->cl_session, |
7641 | &calldata->arg.seq_args, | |
7642 | &calldata->res.seq_res, | |
7643 | task); | |
fce5c838 RL |
7644 | } |
7645 | ||
aa5190d0 TM |
7646 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7647 | { | |
7648 | switch(task->tk_status) { | |
7649 | case 0: | |
7650 | case -NFS4ERR_COMPLETE_ALREADY: | |
7651 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7652 | break; | |
7653 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7654 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7655 | /* fall through */ |
7656 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7657 | return -EAGAIN; |
7658 | default: | |
0400a6b0 | 7659 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7660 | } |
7661 | return 0; | |
7662 | } | |
7663 | ||
fce5c838 RL |
7664 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7665 | { | |
7666 | struct nfs4_reclaim_complete_data *calldata = data; | |
7667 | struct nfs_client *clp = calldata->clp; | |
7668 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7669 | ||
7670 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7671 | if (!nfs41_sequence_done(task, res)) |
7672 | return; | |
fce5c838 | 7673 | |
c6d01c6f | 7674 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7675 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7676 | rpc_restart_call_prepare(task); | |
7677 | return; | |
7678 | } | |
fce5c838 RL |
7679 | dprintk("<-- %s\n", __func__); |
7680 | } | |
7681 | ||
7682 | static void nfs4_free_reclaim_complete_data(void *data) | |
7683 | { | |
7684 | struct nfs4_reclaim_complete_data *calldata = data; | |
7685 | ||
7686 | kfree(calldata); | |
7687 | } | |
7688 | ||
7689 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7690 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7691 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7692 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7693 | }; | |
7694 | ||
7695 | /* | |
7696 | * Issue a global reclaim complete. | |
7697 | */ | |
965e9c23 TM |
7698 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7699 | struct rpc_cred *cred) | |
fce5c838 RL |
7700 | { |
7701 | struct nfs4_reclaim_complete_data *calldata; | |
7702 | struct rpc_task *task; | |
7703 | struct rpc_message msg = { | |
7704 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7705 | .rpc_cred = cred, |
fce5c838 RL |
7706 | }; |
7707 | struct rpc_task_setup task_setup_data = { | |
7708 | .rpc_client = clp->cl_rpcclient, | |
7709 | .rpc_message = &msg, | |
7710 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7711 | .flags = RPC_TASK_ASYNC, | |
7712 | }; | |
7713 | int status = -ENOMEM; | |
7714 | ||
7715 | dprintk("--> %s\n", __func__); | |
8535b2be | 7716 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7717 | if (calldata == NULL) |
7718 | goto out; | |
7719 | calldata->clp = clp; | |
7720 | calldata->arg.one_fs = 0; | |
fce5c838 | 7721 | |
a9c92d6b | 7722 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7723 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7724 | msg.rpc_argp = &calldata->arg; |
7725 | msg.rpc_resp = &calldata->res; | |
7726 | task_setup_data.callback_data = calldata; | |
7727 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7728 | if (IS_ERR(task)) { |
fce5c838 | 7729 | status = PTR_ERR(task); |
acf82b85 DC |
7730 | goto out; |
7731 | } | |
c34c32ea AA |
7732 | status = nfs4_wait_for_completion_rpc_task(task); |
7733 | if (status == 0) | |
7734 | status = task->tk_status; | |
fce5c838 | 7735 | rpc_put_task(task); |
acf82b85 | 7736 | return 0; |
fce5c838 RL |
7737 | out: |
7738 | dprintk("<-- %s status=%d\n", __func__, status); | |
7739 | return status; | |
7740 | } | |
b1f69b75 AA |
7741 | |
7742 | static void | |
7743 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7744 | { | |
7745 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7746 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7747 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7748 | |
7749 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
7750 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
7751 | * right now covering the LAYOUTGET we are about to send. | |
7752 | * However, that is not so catastrophic, and there seems | |
7753 | * to be no way to prevent it completely. | |
7754 | */ | |
6ba7db34 | 7755 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 7756 | &lgp->res.seq_res, task)) |
b1f69b75 | 7757 | return; |
cf7d63f1 FI |
7758 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
7759 | NFS_I(lgp->args.inode)->layout, | |
ce6ab4f2 | 7760 | &lgp->args.range, |
cf7d63f1 FI |
7761 | lgp->args.ctx->state)) { |
7762 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 7763 | } |
b1f69b75 AA |
7764 | } |
7765 | ||
7766 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7767 | { | |
7768 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
7769 | struct inode *inode = lgp->args.inode; |
7770 | struct nfs_server *server = NFS_SERVER(inode); | |
7771 | struct pnfs_layout_hdr *lo; | |
7772 | struct nfs4_state *state = NULL; | |
ed7e5423 | 7773 | unsigned long timeo, now, giveup; |
b1f69b75 | 7774 | |
ed7e5423 | 7775 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7776 | |
6ba7db34 | 7777 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 7778 | goto out; |
b1f69b75 AA |
7779 | |
7780 | switch (task->tk_status) { | |
7781 | case 0: | |
ee314c2a | 7782 | goto out; |
ed7e5423 BH |
7783 | /* |
7784 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
7785 | * (or clients) writing to the same RAID stripe | |
7786 | */ | |
b1f69b75 | 7787 | case -NFS4ERR_LAYOUTTRYLATER: |
ed7e5423 BH |
7788 | /* |
7789 | * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall | |
7790 | * existing layout before getting a new one). | |
7791 | */ | |
b1f69b75 | 7792 | case -NFS4ERR_RECALLCONFLICT: |
30005121 WAA |
7793 | timeo = rpc_get_timeout(task->tk_client); |
7794 | giveup = lgp->args.timestamp + timeo; | |
ed7e5423 BH |
7795 | now = jiffies; |
7796 | if (time_after(giveup, now)) { | |
7797 | unsigned long delay; | |
7798 | ||
7799 | /* Delay for: | |
7800 | * - Not less then NFS4_POLL_RETRY_MIN. | |
7801 | * - One last time a jiffie before we give up | |
7802 | * - exponential backoff (time_now minus start_attempt) | |
7803 | */ | |
7804 | delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, | |
7805 | min((giveup - now - 1), | |
7806 | now - lgp->args.timestamp)); | |
7807 | ||
7808 | dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", | |
7809 | __func__, delay); | |
7810 | rpc_delay(task, delay); | |
7811 | task->tk_status = 0; | |
7812 | rpc_restart_call_prepare(task); | |
7813 | goto out; /* Do not call nfs4_async_handle_error() */ | |
7814 | } | |
ee314c2a TM |
7815 | break; |
7816 | case -NFS4ERR_EXPIRED: | |
7817 | case -NFS4ERR_BAD_STATEID: | |
7818 | spin_lock(&inode->i_lock); | |
7819 | lo = NFS_I(inode)->layout; | |
7820 | if (!lo || list_empty(&lo->plh_segs)) { | |
7821 | spin_unlock(&inode->i_lock); | |
7822 | /* If the open stateid was bad, then recover it. */ | |
7823 | state = lgp->args.ctx->state; | |
7824 | } else { | |
7825 | LIST_HEAD(head); | |
7826 | ||
defb8460 CH |
7827 | /* |
7828 | * Mark the bad layout state as invalid, then retry | |
7829 | * with the current stateid. | |
7830 | */ | |
ee314c2a TM |
7831 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); |
7832 | spin_unlock(&inode->i_lock); | |
ee314c2a | 7833 | pnfs_free_lseg_list(&head); |
defb8460 CH |
7834 | |
7835 | task->tk_status = 0; | |
7836 | rpc_restart_call_prepare(task); | |
b1f69b75 AA |
7837 | } |
7838 | } | |
8478eaa1 | 7839 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) |
ee314c2a TM |
7840 | rpc_restart_call_prepare(task); |
7841 | out: | |
b1f69b75 AA |
7842 | dprintk("<-- %s\n", __func__); |
7843 | } | |
7844 | ||
8554116e IK |
7845 | static size_t max_response_pages(struct nfs_server *server) |
7846 | { | |
7847 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7848 | return nfs_page_array_len(0, max_resp_sz); | |
7849 | } | |
7850 | ||
7851 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7852 | { | |
7853 | int i; | |
7854 | ||
7855 | if (!pages) | |
7856 | return; | |
7857 | ||
7858 | for (i = 0; i < size; i++) { | |
7859 | if (!pages[i]) | |
7860 | break; | |
7861 | __free_page(pages[i]); | |
7862 | } | |
7863 | kfree(pages); | |
7864 | } | |
7865 | ||
7866 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7867 | { | |
7868 | struct page **pages; | |
7869 | int i; | |
7870 | ||
7871 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7872 | if (!pages) { | |
7873 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7874 | return NULL; | |
7875 | } | |
7876 | ||
7877 | for (i = 0; i < size; i++) { | |
7878 | pages[i] = alloc_page(gfp_flags); | |
7879 | if (!pages[i]) { | |
7880 | dprintk("%s: failed to allocate page\n", __func__); | |
7881 | nfs4_free_pages(pages, size); | |
7882 | return NULL; | |
7883 | } | |
7884 | } | |
7885 | ||
7886 | return pages; | |
7887 | } | |
7888 | ||
b1f69b75 AA |
7889 | static void nfs4_layoutget_release(void *calldata) |
7890 | { | |
7891 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7892 | struct inode *inode = lgp->args.inode; |
7893 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7894 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7895 | |
7896 | dprintk("--> %s\n", __func__); | |
8554116e | 7897 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 7898 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
7899 | put_nfs_open_context(lgp->args.ctx); |
7900 | kfree(calldata); | |
7901 | dprintk("<-- %s\n", __func__); | |
7902 | } | |
7903 | ||
7904 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
7905 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
7906 | .rpc_call_done = nfs4_layoutget_done, | |
7907 | .rpc_release = nfs4_layoutget_release, | |
7908 | }; | |
7909 | ||
a0b0a6e3 TM |
7910 | struct pnfs_layout_segment * |
7911 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 7912 | { |
a47970ff WAA |
7913 | struct inode *inode = lgp->args.inode; |
7914 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 7915 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
7916 | struct rpc_task *task; |
7917 | struct rpc_message msg = { | |
7918 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
7919 | .rpc_argp = &lgp->args, | |
7920 | .rpc_resp = &lgp->res, | |
6ab59344 | 7921 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
7922 | }; |
7923 | struct rpc_task_setup task_setup_data = { | |
7924 | .rpc_client = server->client, | |
7925 | .rpc_message = &msg, | |
7926 | .callback_ops = &nfs4_layoutget_call_ops, | |
7927 | .callback_data = lgp, | |
7928 | .flags = RPC_TASK_ASYNC, | |
7929 | }; | |
a0b0a6e3 | 7930 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
7931 | int status = 0; |
7932 | ||
7933 | dprintk("--> %s\n", __func__); | |
7934 | ||
4bd5a980 PT |
7935 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
7936 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
7937 | ||
8554116e IK |
7938 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
7939 | if (!lgp->args.layout.pages) { | |
7940 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 7941 | return ERR_PTR(-ENOMEM); |
8554116e IK |
7942 | } |
7943 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 7944 | lgp->args.timestamp = jiffies; |
8554116e | 7945 | |
35124a09 | 7946 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 7947 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 7948 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 7949 | |
b1f69b75 AA |
7950 | task = rpc_run_task(&task_setup_data); |
7951 | if (IS_ERR(task)) | |
a0b0a6e3 | 7952 | return ERR_CAST(task); |
b1f69b75 | 7953 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
7954 | if (status == 0) |
7955 | status = task->tk_status; | |
1037e6ea TM |
7956 | trace_nfs4_layoutget(lgp->args.ctx, |
7957 | &lgp->args.range, | |
7958 | &lgp->res.range, | |
7959 | status); | |
085b7a45 WAA |
7960 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
7961 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 7962 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
7963 | rpc_put_task(task); |
7964 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
7965 | if (status) |
7966 | return ERR_PTR(status); | |
7967 | return lseg; | |
b1f69b75 AA |
7968 | } |
7969 | ||
cbe82603 BH |
7970 | static void |
7971 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
7972 | { | |
7973 | struct nfs4_layoutreturn *lrp = calldata; | |
7974 | ||
7975 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
7976 | nfs41_setup_sequence(lrp->clp->cl_session, |
7977 | &lrp->args.seq_args, | |
7978 | &lrp->res.seq_res, | |
7979 | task); | |
cbe82603 BH |
7980 | } |
7981 | ||
7982 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
7983 | { | |
7984 | struct nfs4_layoutreturn *lrp = calldata; | |
7985 | struct nfs_server *server; | |
7986 | ||
7987 | dprintk("--> %s\n", __func__); | |
7988 | ||
6ba7db34 | 7989 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
7990 | return; |
7991 | ||
7992 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
7993 | switch (task->tk_status) { |
7994 | default: | |
7995 | task->tk_status = 0; | |
7996 | case 0: | |
7997 | break; | |
7998 | case -NFS4ERR_DELAY: | |
8478eaa1 | 7999 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8000 | break; |
d00c5d43 | 8001 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8002 | return; |
8003 | } | |
cbe82603 BH |
8004 | dprintk("<-- %s\n", __func__); |
8005 | } | |
8006 | ||
8007 | static void nfs4_layoutreturn_release(void *calldata) | |
8008 | { | |
8009 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8010 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8011 | LIST_HEAD(freeme); |
cbe82603 BH |
8012 | |
8013 | dprintk("--> %s\n", __func__); | |
849b286f TM |
8014 | spin_lock(&lo->plh_inode->i_lock); |
8015 | if (lrp->res.lrs_present) | |
8016 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
c5d73716 | 8017 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range); |
d67ae825 | 8018 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f TM |
8019 | lo->plh_block_lgets--; |
8020 | spin_unlock(&lo->plh_inode->i_lock); | |
c5d73716 | 8021 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8022 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8023 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8024 | kfree(calldata); |
8025 | dprintk("<-- %s\n", __func__); | |
8026 | } | |
8027 | ||
8028 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8029 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8030 | .rpc_call_done = nfs4_layoutreturn_done, | |
8031 | .rpc_release = nfs4_layoutreturn_release, | |
8032 | }; | |
8033 | ||
6c16605d | 8034 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8035 | { |
8036 | struct rpc_task *task; | |
8037 | struct rpc_message msg = { | |
8038 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8039 | .rpc_argp = &lrp->args, | |
8040 | .rpc_resp = &lrp->res, | |
9556000d | 8041 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8042 | }; |
8043 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8044 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8045 | .rpc_message = &msg, |
8046 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8047 | .callback_data = lrp, | |
8048 | }; | |
6c16605d | 8049 | int status = 0; |
cbe82603 BH |
8050 | |
8051 | dprintk("--> %s\n", __func__); | |
5a0ec8ac TM |
8052 | if (!sync) { |
8053 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8054 | if (!lrp->inode) { | |
8055 | nfs4_layoutreturn_release(lrp); | |
8056 | return -EAGAIN; | |
8057 | } | |
8058 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8059 | } | |
a9c92d6b | 8060 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8061 | task = rpc_run_task(&task_setup_data); |
8062 | if (IS_ERR(task)) | |
8063 | return PTR_ERR(task); | |
5a0ec8ac TM |
8064 | if (sync) |
8065 | status = task->tk_status; | |
1037e6ea | 8066 | trace_nfs4_layoutreturn(lrp->args.inode, status); |
cbe82603 BH |
8067 | dprintk("<-- %s status=%d\n", __func__, status); |
8068 | rpc_put_task(task); | |
8069 | return status; | |
8070 | } | |
8071 | ||
b1f69b75 | 8072 | static int |
cd5875fe TM |
8073 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8074 | struct pnfs_device *pdev, | |
8075 | struct rpc_cred *cred) | |
b1f69b75 AA |
8076 | { |
8077 | struct nfs4_getdeviceinfo_args args = { | |
8078 | .pdev = pdev, | |
4e590803 TM |
8079 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8080 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8081 | }; |
8082 | struct nfs4_getdeviceinfo_res res = { | |
8083 | .pdev = pdev, | |
8084 | }; | |
8085 | struct rpc_message msg = { | |
8086 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8087 | .rpc_argp = &args, | |
8088 | .rpc_resp = &res, | |
cd5875fe | 8089 | .rpc_cred = cred, |
b1f69b75 AA |
8090 | }; |
8091 | int status; | |
8092 | ||
8093 | dprintk("--> %s\n", __func__); | |
7c513058 | 8094 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8095 | if (res.notification & ~args.notify_types) |
8096 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8097 | if (res.notification != args.notify_types) |
8098 | pdev->nocache = 1; | |
4e590803 | 8099 | |
b1f69b75 AA |
8100 | dprintk("<-- %s status=%d\n", __func__, status); |
8101 | ||
8102 | return status; | |
8103 | } | |
8104 | ||
cd5875fe TM |
8105 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8106 | struct pnfs_device *pdev, | |
8107 | struct rpc_cred *cred) | |
b1f69b75 AA |
8108 | { |
8109 | struct nfs4_exception exception = { }; | |
8110 | int err; | |
8111 | ||
8112 | do { | |
8113 | err = nfs4_handle_exception(server, | |
cd5875fe | 8114 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8115 | &exception); |
8116 | } while (exception.retry); | |
8117 | return err; | |
8118 | } | |
8119 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8120 | ||
863a3c6c AA |
8121 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8122 | { | |
8123 | struct nfs4_layoutcommit_data *data = calldata; | |
8124 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8125 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8126 | |
d9afbd1b TM |
8127 | nfs41_setup_sequence(session, |
8128 | &data->args.seq_args, | |
8129 | &data->res.seq_res, | |
8130 | task); | |
863a3c6c AA |
8131 | } |
8132 | ||
8133 | static void | |
8134 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8135 | { | |
8136 | struct nfs4_layoutcommit_data *data = calldata; | |
8137 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8138 | ||
6ba7db34 | 8139 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8140 | return; |
8141 | ||
8142 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8143 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8144 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8145 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8146 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8147 | task->tk_status = 0; |
e59d27e0 | 8148 | case 0: |
e59d27e0 TM |
8149 | break; |
8150 | default: | |
8478eaa1 | 8151 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8152 | rpc_restart_call_prepare(task); |
8153 | return; | |
8154 | } | |
8155 | } | |
863a3c6c AA |
8156 | } |
8157 | ||
8158 | static void nfs4_layoutcommit_release(void *calldata) | |
8159 | { | |
8160 | struct nfs4_layoutcommit_data *data = calldata; | |
8161 | ||
db29c089 | 8162 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8163 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8164 | data->res.fattr); | |
863a3c6c | 8165 | put_rpccred(data->cred); |
472e2594 | 8166 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8167 | kfree(data); |
8168 | } | |
8169 | ||
8170 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8171 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8172 | .rpc_call_done = nfs4_layoutcommit_done, | |
8173 | .rpc_release = nfs4_layoutcommit_release, | |
8174 | }; | |
8175 | ||
8176 | int | |
ef311537 | 8177 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8178 | { |
8179 | struct rpc_message msg = { | |
8180 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8181 | .rpc_argp = &data->args, | |
8182 | .rpc_resp = &data->res, | |
8183 | .rpc_cred = data->cred, | |
8184 | }; | |
8185 | struct rpc_task_setup task_setup_data = { | |
8186 | .task = &data->task, | |
8187 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8188 | .rpc_message = &msg, | |
8189 | .callback_ops = &nfs4_layoutcommit_ops, | |
8190 | .callback_data = data, | |
863a3c6c AA |
8191 | }; |
8192 | struct rpc_task *task; | |
8193 | int status = 0; | |
8194 | ||
b4839ebe KM |
8195 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8196 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8197 | data->args.lastbytewritten, |
8198 | data->args.inode->i_ino); | |
8199 | ||
472e2594 TM |
8200 | if (!sync) { |
8201 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8202 | if (data->inode == NULL) { | |
8203 | nfs4_layoutcommit_release(data); | |
8204 | return -EAGAIN; | |
8205 | } | |
8206 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8207 | } | |
a9c92d6b | 8208 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8209 | task = rpc_run_task(&task_setup_data); |
8210 | if (IS_ERR(task)) | |
8211 | return PTR_ERR(task); | |
472e2594 TM |
8212 | if (sync) |
8213 | status = task->tk_status; | |
1037e6ea | 8214 | trace_nfs4_layoutcommit(data->args.inode, status); |
863a3c6c AA |
8215 | dprintk("%s: status %d\n", __func__, status); |
8216 | rpc_put_task(task); | |
8217 | return status; | |
8218 | } | |
fca78d6d | 8219 | |
97431204 AA |
8220 | /** |
8221 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8222 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8223 | */ | |
fca78d6d BS |
8224 | static int |
8225 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8226 | struct nfs_fsinfo *info, |
8227 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8228 | { |
8229 | struct nfs41_secinfo_no_name_args args = { | |
8230 | .style = SECINFO_STYLE_CURRENT_FH, | |
8231 | }; | |
8232 | struct nfs4_secinfo_res res = { | |
8233 | .flavors = flavors, | |
8234 | }; | |
8235 | struct rpc_message msg = { | |
8236 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8237 | .rpc_argp = &args, | |
8238 | .rpc_resp = &res, | |
8239 | }; | |
b1b3e136 | 8240 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8241 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8242 | int status; |
8243 | ||
8244 | if (use_integrity) { | |
8245 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8246 | cred = nfs4_get_clid_cred(server->nfs_client); |
8247 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8248 | } |
8249 | ||
8250 | dprintk("--> %s\n", __func__); | |
8251 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8252 | &res.seq_res, 0); | |
8253 | dprintk("<-- %s status=%d\n", __func__, status); | |
8254 | ||
7cb852df WAA |
8255 | if (cred) |
8256 | put_rpccred(cred); | |
b1b3e136 WAA |
8257 | |
8258 | return status; | |
fca78d6d BS |
8259 | } |
8260 | ||
8261 | static int | |
8262 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8263 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8264 | { | |
8265 | struct nfs4_exception exception = { }; | |
8266 | int err; | |
8267 | do { | |
b1b3e136 WAA |
8268 | /* first try using integrity protection */ |
8269 | err = -NFS4ERR_WRONGSEC; | |
8270 | ||
8271 | /* try to use integrity protection with machine cred */ | |
8272 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8273 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8274 | flavors, true); | |
8275 | ||
8276 | /* | |
8277 | * if unable to use integrity protection, or SECINFO with | |
8278 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8279 | * disallowed by spec, but exists in deployed servers) use | |
8280 | * the current filesystem's rpc_client and the user cred. | |
8281 | */ | |
8282 | if (err == -NFS4ERR_WRONGSEC) | |
8283 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8284 | flavors, false); | |
8285 | ||
fca78d6d BS |
8286 | switch (err) { |
8287 | case 0: | |
8288 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8289 | case -ENOTSUPP: |
05e9cfb4 | 8290 | goto out; |
fca78d6d BS |
8291 | default: |
8292 | err = nfs4_handle_exception(server, err, &exception); | |
8293 | } | |
8294 | } while (exception.retry); | |
05e9cfb4 | 8295 | out: |
fca78d6d BS |
8296 | return err; |
8297 | } | |
8298 | ||
8299 | static int | |
8300 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8301 | struct nfs_fsinfo *info) | |
8302 | { | |
8303 | int err; | |
8304 | struct page *page; | |
367156d9 | 8305 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8306 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8307 | struct nfs4_secinfo4 *secinfo; |
8308 | int i; | |
fca78d6d BS |
8309 | |
8310 | page = alloc_page(GFP_KERNEL); | |
8311 | if (!page) { | |
8312 | err = -ENOMEM; | |
8313 | goto out; | |
8314 | } | |
8315 | ||
8316 | flavors = page_address(page); | |
8317 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8318 | ||
8319 | /* | |
8320 | * Fall back on "guess and check" method if | |
8321 | * the server doesn't support SECINFO_NO_NAME | |
8322 | */ | |
78b19bae | 8323 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8324 | err = nfs4_find_root_sec(server, fhandle, info); |
8325 | goto out_freepage; | |
8326 | } | |
8327 | if (err) | |
8328 | goto out_freepage; | |
8329 | ||
58a8cf12 WAA |
8330 | for (i = 0; i < flavors->num_flavors; i++) { |
8331 | secinfo = &flavors->flavors[i]; | |
8332 | ||
8333 | switch (secinfo->flavor) { | |
8334 | case RPC_AUTH_NULL: | |
8335 | case RPC_AUTH_UNIX: | |
8336 | case RPC_AUTH_GSS: | |
8337 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8338 | &secinfo->flavor_info); | |
8339 | break; | |
8340 | default: | |
8341 | flavor = RPC_AUTH_MAXFLAVOR; | |
8342 | break; | |
8343 | } | |
8344 | ||
4d4b69dd WAA |
8345 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8346 | flavor = RPC_AUTH_MAXFLAVOR; | |
8347 | ||
58a8cf12 WAA |
8348 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8349 | err = nfs4_lookup_root_sec(server, fhandle, | |
8350 | info, flavor); | |
8351 | if (!err) | |
8352 | break; | |
8353 | } | |
8354 | } | |
8355 | ||
8356 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8357 | err = -EPERM; | |
fca78d6d BS |
8358 | |
8359 | out_freepage: | |
8360 | put_page(page); | |
8361 | if (err == -EACCES) | |
8362 | return -EPERM; | |
8363 | out: | |
8364 | return err; | |
8365 | } | |
1cab0652 | 8366 | |
ab7cb0df TM |
8367 | static int _nfs41_test_stateid(struct nfs_server *server, |
8368 | nfs4_stateid *stateid, | |
8369 | struct rpc_cred *cred) | |
7d974794 BS |
8370 | { |
8371 | int status; | |
8372 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8373 | .stateid = stateid, |
7d974794 BS |
8374 | }; |
8375 | struct nfs41_test_stateid_res res; | |
8376 | struct rpc_message msg = { | |
8377 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8378 | .rpc_argp = &args, | |
8379 | .rpc_resp = &res, | |
ab7cb0df | 8380 | .rpc_cred = cred, |
7d974794 | 8381 | }; |
3787d506 WAA |
8382 | struct rpc_clnt *rpc_client = server->client; |
8383 | ||
8384 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8385 | &rpc_client, &msg); | |
1cab0652 | 8386 | |
38527b15 | 8387 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8388 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8389 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8390 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8391 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8392 | if (status != NFS_OK) { |
8393 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8394 | return status; |
38527b15 CL |
8395 | } |
8396 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8397 | return -res.status; |
7d974794 BS |
8398 | } |
8399 | ||
38527b15 CL |
8400 | /** |
8401 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8402 | * | |
8403 | * @server: server / transport on which to perform the operation | |
8404 | * @stateid: state ID to test | |
ab7cb0df | 8405 | * @cred: credential |
38527b15 CL |
8406 | * |
8407 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8408 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8409 | * failed or the state ID is not currently valid. | |
8410 | */ | |
ab7cb0df TM |
8411 | static int nfs41_test_stateid(struct nfs_server *server, |
8412 | nfs4_stateid *stateid, | |
8413 | struct rpc_cred *cred) | |
7d974794 BS |
8414 | { |
8415 | struct nfs4_exception exception = { }; | |
8416 | int err; | |
8417 | do { | |
ab7cb0df | 8418 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8419 | if (err != -NFS4ERR_DELAY) |
8420 | break; | |
8421 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8422 | } while (exception.retry); |
8423 | return err; | |
8424 | } | |
9aeda35f | 8425 | |
7c1d5fae TM |
8426 | struct nfs_free_stateid_data { |
8427 | struct nfs_server *server; | |
8428 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8429 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8430 | }; |
8431 | ||
8432 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8433 | { | |
8434 | struct nfs_free_stateid_data *data = calldata; | |
8435 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8436 | &data->args.seq_args, | |
8437 | &data->res.seq_res, | |
8438 | task); | |
8439 | } | |
8440 | ||
8441 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8442 | { | |
8443 | struct nfs_free_stateid_data *data = calldata; | |
8444 | ||
8445 | nfs41_sequence_done(task, &data->res.seq_res); | |
8446 | ||
8447 | switch (task->tk_status) { | |
8448 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8449 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8450 | rpc_restart_call_prepare(task); |
8451 | } | |
8452 | } | |
8453 | ||
8454 | static void nfs41_free_stateid_release(void *calldata) | |
8455 | { | |
8456 | kfree(calldata); | |
8457 | } | |
8458 | ||
17f26b12 | 8459 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8460 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8461 | .rpc_call_done = nfs41_free_stateid_done, | |
8462 | .rpc_release = nfs41_free_stateid_release, | |
8463 | }; | |
8464 | ||
8465 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8466 | nfs4_stateid *stateid, | |
ab7cb0df | 8467 | struct rpc_cred *cred, |
7c1d5fae TM |
8468 | bool privileged) |
8469 | { | |
9aeda35f BS |
8470 | struct rpc_message msg = { |
8471 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8472 | .rpc_cred = cred, |
9aeda35f | 8473 | }; |
7c1d5fae TM |
8474 | struct rpc_task_setup task_setup = { |
8475 | .rpc_client = server->client, | |
8476 | .rpc_message = &msg, | |
8477 | .callback_ops = &nfs41_free_stateid_ops, | |
8478 | .flags = RPC_TASK_ASYNC, | |
8479 | }; | |
8480 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8481 | |
3787d506 WAA |
8482 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8483 | &task_setup.rpc_client, &msg); | |
8484 | ||
38527b15 | 8485 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8486 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8487 | if (!data) | |
8488 | return ERR_PTR(-ENOMEM); | |
8489 | data->server = server; | |
8490 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8491 | ||
8492 | task_setup.callback_data = data; | |
8493 | ||
8494 | msg.rpc_argp = &data->args; | |
8495 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8496 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8497 | if (privileged) |
8498 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8499 | ||
8500 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8501 | } |
8502 | ||
38527b15 CL |
8503 | /** |
8504 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8505 | * | |
8506 | * @server: server / transport on which to perform the operation | |
8507 | * @stateid: state ID to release | |
ab7cb0df | 8508 | * @cred: credential |
38527b15 CL |
8509 | * |
8510 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8511 | * negative NFS4ERR value is returned. | |
8512 | */ | |
ab7cb0df TM |
8513 | static int nfs41_free_stateid(struct nfs_server *server, |
8514 | nfs4_stateid *stateid, | |
8515 | struct rpc_cred *cred) | |
9aeda35f | 8516 | { |
7c1d5fae TM |
8517 | struct rpc_task *task; |
8518 | int ret; | |
8519 | ||
ab7cb0df | 8520 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8521 | if (IS_ERR(task)) |
8522 | return PTR_ERR(task); | |
8523 | ret = rpc_wait_for_completion_task(task); | |
8524 | if (!ret) | |
8525 | ret = task->tk_status; | |
8526 | rpc_put_task(task); | |
8527 | return ret; | |
9aeda35f | 8528 | } |
36281caa | 8529 | |
f1cdae87 JL |
8530 | static void |
8531 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8532 | { |
8533 | struct rpc_task *task; | |
ab7cb0df | 8534 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8535 | |
ab7cb0df | 8536 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8537 | nfs4_free_lock_state(server, lsp); |
8538 | if (IS_ERR(task)) | |
f1cdae87 | 8539 | return; |
c8b2d0bf | 8540 | rpc_put_task(task); |
c8b2d0bf TM |
8541 | } |
8542 | ||
36281caa TM |
8543 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8544 | const nfs4_stateid *s2) | |
8545 | { | |
2d2f24ad | 8546 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8547 | return false; |
8548 | ||
2d2f24ad | 8549 | if (s1->seqid == s2->seqid) |
36281caa | 8550 | return true; |
2d2f24ad | 8551 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8552 | return true; |
8553 | ||
8554 | return false; | |
8555 | } | |
8556 | ||
557134a3 AA |
8557 | #endif /* CONFIG_NFS_V4_1 */ |
8558 | ||
36281caa TM |
8559 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8560 | const nfs4_stateid *s2) | |
8561 | { | |
f597c537 | 8562 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8563 | } |
8564 | ||
8565 | ||
17280175 | 8566 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8567 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8568 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8569 | .recover_open = nfs4_open_reclaim, |
8570 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8571 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8572 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8573 | }; |
8574 | ||
591d71cb | 8575 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8576 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8577 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8578 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8579 | .recover_open = nfs4_open_reclaim, | |
8580 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8581 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8582 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8583 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8584 | }; |
8585 | #endif /* CONFIG_NFS_V4_1 */ | |
8586 | ||
17280175 | 8587 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8588 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8589 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8590 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8591 | .recover_lock = nfs4_lock_expired, |
8592 | .establish_clid = nfs4_init_clientid, | |
8593 | }; | |
8594 | ||
8595 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8596 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8597 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8598 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8599 | .recover_open = nfs41_open_expired, |
8600 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8601 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8602 | }; |
591d71cb | 8603 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8604 | |
17280175 | 8605 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8606 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8607 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8608 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8609 | }; |
8610 | ||
8611 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8612 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8613 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8614 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8615 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8616 | }; |
8617 | #endif | |
8618 | ||
ec011fe8 | 8619 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8620 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8621 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8622 | }; |
8623 | ||
8624 | #if defined(CONFIG_NFS_V4_1) | |
8625 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8626 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8627 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8628 | }; |
8629 | #endif /* CONFIG_NFS_V4_1 */ | |
8630 | ||
97dc1359 TM |
8631 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8632 | .minor_version = 0, | |
39c6daae TM |
8633 | .init_caps = NFS_CAP_READDIRPLUS |
8634 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8635 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8636 | .init_client = nfs40_init_client, |
8637 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8638 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8639 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8640 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8641 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8642 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8643 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8644 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8645 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8646 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8647 | }; |
8648 | ||
8649 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8650 | static struct nfs_seqid * |
8651 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8652 | { | |
8653 | return NULL; | |
8654 | } | |
8655 | ||
97dc1359 TM |
8656 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8657 | .minor_version = 1, | |
39c6daae TM |
8658 | .init_caps = NFS_CAP_READDIRPLUS |
8659 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8660 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8661 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8662 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8663 | .init_client = nfs41_init_client, |
8664 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8665 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8666 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8667 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8668 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8669 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8670 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8671 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8672 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8673 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8674 | }; |
8675 | #endif | |
8676 | ||
42c2c424 SD |
8677 | #if defined(CONFIG_NFS_V4_2) |
8678 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8679 | .minor_version = 2, | |
7017310a BS |
8680 | .init_caps = NFS_CAP_READDIRPLUS |
8681 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8682 | | NFS_CAP_POSIX_LOCK |
8683 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8684 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8685 | | NFS_CAP_ALLOCATE |
624bd5b7 | 8686 | | NFS_CAP_DEALLOCATE |
6c5a0d89 TM |
8687 | | NFS_CAP_SEEK |
8688 | | NFS_CAP_LAYOUTSTATS, | |
abf79bb3 CL |
8689 | .init_client = nfs41_init_client, |
8690 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8691 | .match_stateid = nfs41_match_stateid, |
8692 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8693 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8694 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8695 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8696 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8697 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8698 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8699 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8700 | }; |
8701 | #endif | |
8702 | ||
97dc1359 TM |
8703 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8704 | [0] = &nfs_v4_0_minor_ops, | |
8705 | #if defined(CONFIG_NFS_V4_1) | |
8706 | [1] = &nfs_v4_1_minor_ops, | |
8707 | #endif | |
42c2c424 SD |
8708 | #if defined(CONFIG_NFS_V4_2) |
8709 | [2] = &nfs_v4_2_minor_ops, | |
8710 | #endif | |
97dc1359 TM |
8711 | }; |
8712 | ||
17f26b12 | 8713 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8714 | .create = nfs_create, |
8715 | .lookup = nfs_lookup, | |
8716 | .atomic_open = nfs_atomic_open, | |
8717 | .link = nfs_link, | |
8718 | .unlink = nfs_unlink, | |
8719 | .symlink = nfs_symlink, | |
8720 | .mkdir = nfs_mkdir, | |
8721 | .rmdir = nfs_rmdir, | |
8722 | .mknod = nfs_mknod, | |
8723 | .rename = nfs_rename, | |
8724 | .permission = nfs_permission, | |
8725 | .getattr = nfs_getattr, | |
8726 | .setattr = nfs_setattr, | |
8727 | .getxattr = generic_getxattr, | |
8728 | .setxattr = generic_setxattr, | |
8729 | .listxattr = generic_listxattr, | |
8730 | .removexattr = generic_removexattr, | |
8731 | }; | |
8732 | ||
92e1d5be | 8733 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8734 | .permission = nfs_permission, |
8735 | .getattr = nfs_getattr, | |
8736 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8737 | .getxattr = generic_getxattr, |
8738 | .setxattr = generic_setxattr, | |
8739 | .listxattr = generic_listxattr, | |
8740 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
8741 | }; |
8742 | ||
509de811 | 8743 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8744 | .version = 4, /* protocol version */ |
8745 | .dentry_ops = &nfs4_dentry_operations, | |
8746 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8747 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8748 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8749 | .getroot = nfs4_proc_get_root, |
281cad46 | 8750 | .submount = nfs4_submount, |
ff9099f2 | 8751 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8752 | .getattr = nfs4_proc_getattr, |
8753 | .setattr = nfs4_proc_setattr, | |
8754 | .lookup = nfs4_proc_lookup, | |
8755 | .access = nfs4_proc_access, | |
8756 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8757 | .create = nfs4_proc_create, |
8758 | .remove = nfs4_proc_remove, | |
8759 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8760 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8761 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8762 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8763 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8764 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8765 | .link = nfs4_proc_link, |
8766 | .symlink = nfs4_proc_symlink, | |
8767 | .mkdir = nfs4_proc_mkdir, | |
8768 | .rmdir = nfs4_proc_remove, | |
8769 | .readdir = nfs4_proc_readdir, | |
8770 | .mknod = nfs4_proc_mknod, | |
8771 | .statfs = nfs4_proc_statfs, | |
8772 | .fsinfo = nfs4_proc_fsinfo, | |
8773 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8774 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8775 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8776 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8777 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8778 | .read_done = nfs4_read_done, |
1da177e4 | 8779 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8780 | .write_done = nfs4_write_done, |
1da177e4 | 8781 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8782 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8783 | .commit_done = nfs4_commit_done, |
1da177e4 | 8784 | .lock = nfs4_proc_lock, |
e50a1c2e | 8785 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8786 | .close_context = nfs4_close_context, |
2b484297 | 8787 | .open_context = nfs4_atomic_open, |
011e2a7f | 8788 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8789 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8790 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8791 | .init_client = nfs4_init_client, |
cdb7eced | 8792 | .free_client = nfs4_free_client, |
1179acc6 BS |
8793 | .create_server = nfs4_create_server, |
8794 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8795 | }; |
8796 | ||
64c2ce8b AK |
8797 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
8798 | .prefix = XATTR_NAME_NFSV4_ACL, | |
8799 | .list = nfs4_xattr_list_nfs4_acl, | |
8800 | .get = nfs4_xattr_get_nfs4_acl, | |
8801 | .set = nfs4_xattr_set_nfs4_acl, | |
8802 | }; | |
8803 | ||
8804 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8805 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8806 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8807 | &nfs4_xattr_nfs4_label_handler, | |
8808 | #endif | |
64c2ce8b AK |
8809 | NULL |
8810 | }; | |
8811 | ||
1da177e4 LT |
8812 | /* |
8813 | * Local variables: | |
8814 | * c-basic-offset: 8 | |
8815 | * End: | |
8816 | */ |