Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
a1d1c4f1 TM |
77 | /* file attributes which can be mapped to nfs attributes */ |
78 | #define NFS4_VALID_ATTRS (ATTR_MODE \ | |
79 | | ATTR_UID \ | |
80 | | ATTR_GID \ | |
81 | | ATTR_SIZE \ | |
82 | | ATTR_ATIME \ | |
83 | | ATTR_MTIME \ | |
84 | | ATTR_CTIME \ | |
85 | | ATTR_ATIME_SET \ | |
86 | | ATTR_MTIME_SET) | |
87 | ||
cdd4e68b | 88 | struct nfs4_opendata; |
864472e9 | 89 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 90 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 91 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
81934ddb | 92 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
93 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
94 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
95 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
96 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
97 | struct nfs4_state *state, struct nfs4_label *ilabel, |
98 | struct nfs4_label *olabel); | |
f062eb6c | 99 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
100 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
101 | struct rpc_cred *); | |
102 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, | |
103 | struct rpc_cred *); | |
f062eb6c | 104 | #endif |
aa9c2669 DQ |
105 | |
106 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
107 | static inline struct nfs4_label * | |
108 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
109 | struct iattr *sattr, struct nfs4_label *label) | |
110 | { | |
111 | int err; | |
112 | ||
113 | if (label == NULL) | |
114 | return NULL; | |
115 | ||
116 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
117 | return NULL; | |
118 | ||
aa9c2669 DQ |
119 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
120 | &dentry->d_name, (void **)&label->label, &label->len); | |
121 | if (err == 0) | |
122 | return label; | |
123 | ||
124 | return NULL; | |
125 | } | |
126 | static inline void | |
127 | nfs4_label_release_security(struct nfs4_label *label) | |
128 | { | |
129 | if (label) | |
130 | security_release_secctx(label->label, label->len); | |
131 | } | |
132 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
133 | { | |
134 | if (label) | |
135 | return server->attr_bitmask; | |
136 | ||
137 | return server->attr_bitmask_nl; | |
138 | } | |
139 | #else | |
140 | static inline struct nfs4_label * | |
141 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
142 | struct iattr *sattr, struct nfs4_label *l) | |
143 | { return NULL; } | |
144 | static inline void | |
145 | nfs4_label_release_security(struct nfs4_label *label) | |
146 | { return; } | |
147 | static inline u32 * | |
148 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
149 | { return server->attr_bitmask; } | |
150 | #endif | |
151 | ||
1da177e4 | 152 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 153 | static int nfs4_map_errors(int err) |
1da177e4 | 154 | { |
52567b03 TM |
155 | if (err >= -1000) |
156 | return err; | |
157 | switch (err) { | |
158 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
159 | case -NFS4ERR_LAYOUTTRYLATER: |
160 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 161 | return -EREMOTEIO; |
7ebb9315 | 162 | case -NFS4ERR_WRONGSEC: |
8897538e | 163 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 164 | return -EPERM; |
3ddeb7c5 TM |
165 | case -NFS4ERR_BADOWNER: |
166 | case -NFS4ERR_BADNAME: | |
167 | return -EINVAL; | |
fb13bfa7 TM |
168 | case -NFS4ERR_SHARE_DENIED: |
169 | return -EACCES; | |
f25efd85 SD |
170 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
171 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
172 | case -NFS4ERR_FILE_OPEN: |
173 | return -EBUSY; | |
52567b03 | 174 | default: |
1da177e4 | 175 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 176 | __func__, -err); |
52567b03 | 177 | break; |
1da177e4 | 178 | } |
52567b03 | 179 | return -EIO; |
1da177e4 LT |
180 | } |
181 | ||
182 | /* | |
183 | * This is our standard bitmap for GETATTR requests. | |
184 | */ | |
1549210f | 185 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
186 | FATTR4_WORD0_TYPE |
187 | | FATTR4_WORD0_CHANGE | |
188 | | FATTR4_WORD0_SIZE | |
189 | | FATTR4_WORD0_FSID | |
190 | | FATTR4_WORD0_FILEID, | |
191 | FATTR4_WORD1_MODE | |
192 | | FATTR4_WORD1_NUMLINKS | |
193 | | FATTR4_WORD1_OWNER | |
194 | | FATTR4_WORD1_OWNER_GROUP | |
195 | | FATTR4_WORD1_RAWDEV | |
196 | | FATTR4_WORD1_SPACE_USED | |
197 | | FATTR4_WORD1_TIME_ACCESS | |
198 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
199 | | FATTR4_WORD1_TIME_MODIFY |
200 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
201 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
202 | FATTR4_WORD2_SECURITY_LABEL | |
203 | #endif | |
1da177e4 LT |
204 | }; |
205 | ||
1549210f TM |
206 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
207 | FATTR4_WORD0_TYPE | |
208 | | FATTR4_WORD0_CHANGE | |
209 | | FATTR4_WORD0_SIZE | |
210 | | FATTR4_WORD0_FSID | |
211 | | FATTR4_WORD0_FILEID, | |
212 | FATTR4_WORD1_MODE | |
213 | | FATTR4_WORD1_NUMLINKS | |
214 | | FATTR4_WORD1_OWNER | |
215 | | FATTR4_WORD1_OWNER_GROUP | |
216 | | FATTR4_WORD1_RAWDEV | |
217 | | FATTR4_WORD1_SPACE_USED | |
218 | | FATTR4_WORD1_TIME_ACCESS | |
219 | | FATTR4_WORD1_TIME_METADATA | |
220 | | FATTR4_WORD1_TIME_MODIFY, | |
221 | FATTR4_WORD2_MDSTHRESHOLD | |
95864c91 TM |
222 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
223 | | FATTR4_WORD2_SECURITY_LABEL | |
224 | #endif | |
1549210f TM |
225 | }; |
226 | ||
e23008ec AA |
227 | static const u32 nfs4_open_noattr_bitmap[3] = { |
228 | FATTR4_WORD0_TYPE | |
229 | | FATTR4_WORD0_CHANGE | |
230 | | FATTR4_WORD0_FILEID, | |
231 | }; | |
232 | ||
a09df2ca | 233 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
234 | FATTR4_WORD0_FILES_AVAIL |
235 | | FATTR4_WORD0_FILES_FREE | |
236 | | FATTR4_WORD0_FILES_TOTAL, | |
237 | FATTR4_WORD1_SPACE_AVAIL | |
238 | | FATTR4_WORD1_SPACE_FREE | |
239 | | FATTR4_WORD1_SPACE_TOTAL | |
240 | }; | |
241 | ||
a09df2ca | 242 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
243 | FATTR4_WORD0_MAXLINK |
244 | | FATTR4_WORD0_MAXNAME, | |
245 | 0 | |
246 | }; | |
247 | ||
dae100c2 | 248 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
249 | | FATTR4_WORD0_MAXREAD |
250 | | FATTR4_WORD0_MAXWRITE | |
251 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 252 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
253 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
254 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
2a92ee92 | 255 | | FATTR4_WORD2_CLONE_BLKSIZE |
1da177e4 LT |
256 | }; |
257 | ||
a09df2ca | 258 | const u32 nfs4_fs_locations_bitmap[3] = { |
830b8e33 MN |
259 | FATTR4_WORD0_TYPE |
260 | | FATTR4_WORD0_CHANGE | |
261 | | FATTR4_WORD0_SIZE | |
262 | | FATTR4_WORD0_FSID | |
263 | | FATTR4_WORD0_FILEID | |
264 | | FATTR4_WORD0_FS_LOCATIONS, | |
265 | FATTR4_WORD1_MODE | |
266 | | FATTR4_WORD1_NUMLINKS | |
267 | | FATTR4_WORD1_OWNER | |
268 | | FATTR4_WORD1_OWNER_GROUP | |
269 | | FATTR4_WORD1_RAWDEV | |
270 | | FATTR4_WORD1_SPACE_USED | |
271 | | FATTR4_WORD1_TIME_ACCESS | |
272 | | FATTR4_WORD1_TIME_METADATA | |
273 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 274 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
275 | }; |
276 | ||
bc4785cd | 277 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
278 | struct nfs4_readdir_arg *readdir) |
279 | { | |
0dbb4c67 | 280 | __be32 *start, *p; |
1da177e4 | 281 | |
1da177e4 | 282 | if (cookie > 2) { |
b7ef1956 | 283 | readdir->cookie = cookie; |
1da177e4 LT |
284 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
285 | return; | |
286 | } | |
287 | ||
288 | readdir->cookie = 0; | |
289 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
290 | if (cookie == 2) | |
291 | return; | |
292 | ||
293 | /* | |
294 | * NFSv4 servers do not return entries for '.' and '..' | |
295 | * Therefore, we fake these entries here. We let '.' | |
296 | * have cookie 0 and '..' have cookie 1. Note that | |
297 | * when talking to the server, we always send cookie 0 | |
298 | * instead of 1 or 2. | |
299 | */ | |
2b86ce2d | 300 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
301 | |
302 | if (cookie == 0) { | |
303 | *p++ = xdr_one; /* next */ | |
304 | *p++ = xdr_zero; /* cookie, first word */ | |
305 | *p++ = xdr_one; /* cookie, second word */ | |
306 | *p++ = xdr_one; /* entry len */ | |
307 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
308 | p++; | |
309 | *p++ = xdr_one; /* bitmap length */ | |
310 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
311 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 312 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
1da177e4 LT |
313 | } |
314 | ||
315 | *p++ = xdr_one; /* next */ | |
316 | *p++ = xdr_zero; /* cookie, first word */ | |
317 | *p++ = xdr_two; /* cookie, second word */ | |
318 | *p++ = xdr_two; /* entry len */ | |
319 | memcpy(p, "..\0\0", 4); /* entry */ | |
320 | p++; | |
321 | *p++ = xdr_one; /* bitmap length */ | |
322 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
323 | *p++ = htonl(8); /* attribute buffer length */ | |
2b0143b5 | 324 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
325 | |
326 | readdir->pgbase = (char *)p - (char *)start; | |
327 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 328 | kunmap_atomic(start); |
1da177e4 LT |
329 | } |
330 | ||
8478eaa1 N |
331 | static long nfs4_update_delay(long *timeout) |
332 | { | |
333 | long ret; | |
334 | if (!timeout) | |
335 | return NFS4_POLL_RETRY_MAX; | |
336 | if (*timeout <= 0) | |
337 | *timeout = NFS4_POLL_RETRY_MIN; | |
338 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
339 | *timeout = NFS4_POLL_RETRY_MAX; | |
340 | ret = *timeout; | |
341 | *timeout <<= 1; | |
342 | return ret; | |
343 | } | |
344 | ||
65de872e TM |
345 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
346 | { | |
347 | int res = 0; | |
348 | ||
349 | might_sleep(); | |
350 | ||
8478eaa1 N |
351 | freezable_schedule_timeout_killable_unsafe( |
352 | nfs4_update_delay(timeout)); | |
65de872e TM |
353 | if (fatal_signal_pending(current)) |
354 | res = -ERESTARTSYS; | |
65de872e TM |
355 | return res; |
356 | } | |
357 | ||
358 | /* This is the error handling routine for processes that are allowed | |
359 | * to sleep. | |
360 | */ | |
b3c2aa07 TM |
361 | static int nfs4_do_handle_exception(struct nfs_server *server, |
362 | int errorcode, struct nfs4_exception *exception) | |
65de872e TM |
363 | { |
364 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 365 | struct nfs4_state *state = exception->state; |
8487c479 | 366 | const nfs4_stateid *stateid = exception->stateid; |
3114ea7a | 367 | struct inode *inode = exception->inode; |
65de872e TM |
368 | int ret = errorcode; |
369 | ||
b3c2aa07 TM |
370 | exception->delay = 0; |
371 | exception->recovering = 0; | |
65de872e TM |
372 | exception->retry = 0; |
373 | switch(errorcode) { | |
374 | case 0: | |
375 | return 0; | |
3114ea7a | 376 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
377 | case -NFS4ERR_DELEG_REVOKED: |
378 | case -NFS4ERR_ADMIN_REVOKED: | |
379 | case -NFS4ERR_BAD_STATEID: | |
8487c479 TM |
380 | if (inode) { |
381 | int err; | |
382 | ||
383 | err = nfs_async_inode_return_delegation(inode, | |
384 | stateid); | |
385 | if (err == 0) | |
386 | goto wait_on_recovery; | |
387 | if (stateid != NULL && stateid->type == NFS4_DELEGATION_STATEID_TYPE) { | |
388 | exception->retry = 1; | |
389 | break; | |
390 | } | |
391 | } | |
3114ea7a TM |
392 | if (state == NULL) |
393 | break; | |
5d422301 TM |
394 | ret = nfs4_schedule_stateid_recovery(server, state); |
395 | if (ret < 0) | |
396 | break; | |
3114ea7a | 397 | goto wait_on_recovery; |
0ced63d1 | 398 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
399 | if (state != NULL) { |
400 | ret = nfs4_schedule_stateid_recovery(server, state); | |
401 | if (ret < 0) | |
402 | break; | |
403 | } | |
65de872e | 404 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 405 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
406 | nfs4_schedule_lease_recovery(clp); |
407 | goto wait_on_recovery; | |
519ae255 CL |
408 | case -NFS4ERR_MOVED: |
409 | ret = nfs4_schedule_migration_recovery(server); | |
410 | if (ret < 0) | |
411 | break; | |
412 | goto wait_on_recovery; | |
8ef2f8d4 CL |
413 | case -NFS4ERR_LEASE_MOVED: |
414 | nfs4_schedule_lease_moved_recovery(clp); | |
415 | goto wait_on_recovery; | |
03391693 | 416 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
417 | case -NFS4ERR_BADSESSION: |
418 | case -NFS4ERR_BADSLOT: | |
419 | case -NFS4ERR_BAD_HIGH_SLOT: | |
420 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
421 | case -NFS4ERR_DEADSESSION: | |
422 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
423 | case -NFS4ERR_SEQ_MISORDERED: | |
424 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
425 | errorcode); | |
9f594791 | 426 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 427 | goto wait_on_recovery; |
03391693 | 428 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 429 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
430 | if (exception->timeout > HZ) { |
431 | /* We have retried a decent amount, time to | |
432 | * fail | |
433 | */ | |
434 | ret = -EBUSY; | |
435 | break; | |
436 | } | |
65de872e | 437 | case -NFS4ERR_DELAY: |
2598ed34 TM |
438 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
439 | case -NFS4ERR_GRACE: | |
e85d7ee4 | 440 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b | 441 | case -NFS4ERR_RECALLCONFLICT: |
b3c2aa07 TM |
442 | exception->delay = 1; |
443 | return 0; | |
444 | ||
a8a4ae3a | 445 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
446 | case -NFS4ERR_OLD_STATEID: |
447 | exception->retry = 1; | |
b064eca2 TM |
448 | break; |
449 | case -NFS4ERR_BADOWNER: | |
450 | /* The following works around a Linux server bug! */ | |
451 | case -NFS4ERR_BADNAME: | |
452 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
453 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
454 | exception->retry = 1; | |
455 | printk(KERN_WARNING "NFS: v4 server %s " | |
456 | "does not accept raw " | |
457 | "uid/gids. " | |
458 | "Reenabling the idmapper.\n", | |
459 | server->nfs_client->cl_hostname); | |
460 | } | |
65de872e TM |
461 | } |
462 | /* We failed to handle the error */ | |
463 | return nfs4_map_errors(ret); | |
0400a6b0 | 464 | wait_on_recovery: |
b3c2aa07 TM |
465 | exception->recovering = 1; |
466 | return 0; | |
467 | } | |
468 | ||
469 | /* This is the error handling routine for processes that are allowed | |
470 | * to sleep. | |
471 | */ | |
472 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
473 | { | |
474 | struct nfs_client *clp = server->nfs_client; | |
475 | int ret; | |
476 | ||
477 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
478 | if (exception->delay) { | |
479 | ret = nfs4_delay(server->client, &exception->timeout); | |
480 | goto out_retry; | |
481 | } | |
482 | if (exception->recovering) { | |
483 | ret = nfs4_wait_clnt_recover(clp); | |
484 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
485 | return -EIO; | |
486 | goto out_retry; | |
487 | } | |
488 | return ret; | |
489 | out_retry: | |
a2c0b9e2 TM |
490 | if (ret == 0) |
491 | exception->retry = 1; | |
492 | return ret; | |
65de872e TM |
493 | } |
494 | ||
037fc980 TM |
495 | static int |
496 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
497 | int errorcode, struct nfs4_exception *exception) | |
498 | { | |
499 | struct nfs_client *clp = server->nfs_client; | |
500 | int ret; | |
501 | ||
502 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
503 | if (exception->delay) { | |
504 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
505 | goto out_retry; | |
506 | } | |
507 | if (exception->recovering) { | |
508 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
509 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
510 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
511 | goto out_retry; | |
512 | } | |
519ae255 | 513 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
514 | ret = -EIO; |
515 | return ret; | |
516 | out_retry: | |
a2c0b9e2 TM |
517 | if (ret == 0) |
518 | exception->retry = 1; | |
519 | return ret; | |
65de872e TM |
520 | } |
521 | ||
037fc980 TM |
522 | static int |
523 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, | |
524 | struct nfs4_state *state, long *timeout) | |
525 | { | |
526 | struct nfs4_exception exception = { | |
527 | .state = state, | |
528 | }; | |
529 | ||
530 | if (task->tk_status >= 0) | |
531 | return 0; | |
532 | if (timeout) | |
533 | exception.timeout = *timeout; | |
534 | task->tk_status = nfs4_async_handle_exception(task, server, | |
535 | task->tk_status, | |
536 | &exception); | |
537 | if (exception.delay && timeout) | |
538 | *timeout = exception.timeout; | |
539 | if (exception.retry) | |
540 | return -EAGAIN; | |
541 | return 0; | |
542 | } | |
543 | ||
a5250def WAA |
544 | /* |
545 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
546 | * or 'false' otherwise. | |
547 | */ | |
548 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
549 | { | |
550 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
551 | ||
552 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
553 | flavor == RPC_AUTH_GSS_KRB5P) | |
554 | return true; | |
555 | ||
556 | return false; | |
557 | } | |
65de872e | 558 | |
452e9352 | 559 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 560 | { |
1da177e4 LT |
561 | spin_lock(&clp->cl_lock); |
562 | if (time_before(clp->cl_last_renewal,timestamp)) | |
563 | clp->cl_last_renewal = timestamp; | |
564 | spin_unlock(&clp->cl_lock); | |
565 | } | |
566 | ||
452e9352 TM |
567 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
568 | { | |
be824167 TM |
569 | struct nfs_client *clp = server->nfs_client; |
570 | ||
571 | if (!nfs4_has_session(clp)) | |
572 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
573 | } |
574 | ||
2a3eb2b9 CL |
575 | struct nfs4_call_sync_data { |
576 | const struct nfs_server *seq_server; | |
577 | struct nfs4_sequence_args *seq_args; | |
578 | struct nfs4_sequence_res *seq_res; | |
579 | }; | |
580 | ||
be3a5d23 TM |
581 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
582 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
583 | { |
584 | args->sa_slot = NULL; | |
585 | args->sa_cache_this = cache_reply; | |
586 | args->sa_privileged = 0; | |
587 | ||
588 | res->sr_slot = NULL; | |
589 | } | |
590 | ||
591 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
592 | { | |
593 | args->sa_privileged = 1; | |
594 | } | |
595 | ||
cb04ad2a PT |
596 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
597 | struct nfs4_sequence_args *args, | |
598 | struct nfs4_sequence_res *res, | |
599 | struct rpc_task *task) | |
3bd2384a | 600 | { |
3bd2384a CL |
601 | struct nfs4_slot *slot; |
602 | ||
603 | /* slot already allocated? */ | |
604 | if (res->sr_slot != NULL) | |
605 | goto out_start; | |
606 | ||
607 | spin_lock(&tbl->slot_tbl_lock); | |
608 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
609 | goto out_sleep; | |
610 | ||
611 | slot = nfs4_alloc_slot(tbl); | |
612 | if (IS_ERR(slot)) { | |
613 | if (slot == ERR_PTR(-ENOMEM)) | |
614 | task->tk_timeout = HZ >> 2; | |
615 | goto out_sleep; | |
616 | } | |
617 | spin_unlock(&tbl->slot_tbl_lock); | |
618 | ||
619 | args->sa_slot = slot; | |
620 | res->sr_slot = slot; | |
621 | ||
622 | out_start: | |
623 | rpc_call_start(task); | |
624 | return 0; | |
625 | ||
626 | out_sleep: | |
627 | if (args->sa_privileged) | |
628 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
629 | NULL, RPC_PRIORITY_PRIVILEGED); | |
630 | else | |
631 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
632 | spin_unlock(&tbl->slot_tbl_lock); | |
633 | return -EAGAIN; | |
634 | } | |
cb04ad2a | 635 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
636 | |
637 | static int nfs40_sequence_done(struct rpc_task *task, | |
638 | struct nfs4_sequence_res *res) | |
639 | { | |
640 | struct nfs4_slot *slot = res->sr_slot; | |
641 | struct nfs4_slot_table *tbl; | |
642 | ||
cab92c19 | 643 | if (slot == NULL) |
3bd2384a CL |
644 | goto out; |
645 | ||
646 | tbl = slot->table; | |
647 | spin_lock(&tbl->slot_tbl_lock); | |
648 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
649 | nfs4_free_slot(tbl, slot); | |
650 | spin_unlock(&tbl->slot_tbl_lock); | |
651 | ||
652 | res->sr_slot = NULL; | |
653 | out: | |
654 | return 1; | |
655 | } | |
656 | ||
cccef3b9 AA |
657 | #if defined(CONFIG_NFS_V4_1) |
658 | ||
d185a334 | 659 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 660 | { |
e3725ec0 | 661 | struct nfs4_session *session; |
13615871 | 662 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 663 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 664 | bool send_new_highest_used_slotid = false; |
13615871 | 665 | |
a13ce7c6 | 666 | tbl = slot->table; |
e3725ec0 | 667 | session = tbl->session; |
ea028ac9 | 668 | |
35dc1d74 | 669 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
670 | /* Be nice to the server: try to ensure that the last transmitted |
671 | * value for highest_user_slotid <= target_highest_slotid | |
672 | */ | |
673 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
674 | send_new_highest_used_slotid = true; | |
675 | ||
a13ce7c6 | 676 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
677 | send_new_highest_used_slotid = false; |
678 | goto out_unlock; | |
679 | } | |
a13ce7c6 | 680 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
681 | |
682 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
683 | send_new_highest_used_slotid = false; | |
b75ad4cd | 684 | out_unlock: |
35dc1d74 | 685 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 686 | res->sr_slot = NULL; |
c10e4498 | 687 | if (send_new_highest_used_slotid) |
3f10a6af | 688 | nfs41_notify_server(session->clp); |
13615871 AA |
689 | } |
690 | ||
f9c96fcc | 691 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 692 | { |
e3725ec0 | 693 | struct nfs4_session *session; |
a13ce7c6 | 694 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 695 | struct nfs_client *clp; |
ac20d163 | 696 | bool interrupted = false; |
85563073 | 697 | int ret = 1; |
b0df806c | 698 | |
a13ce7c6 TM |
699 | if (slot == NULL) |
700 | goto out_noaction; | |
468f8613 BS |
701 | /* don't increment the sequence number if the task wasn't sent */ |
702 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
703 | goto out; |
704 | ||
e3725ec0 | 705 | session = slot->table->session; |
933602e3 | 706 | |
ac20d163 TM |
707 | if (slot->interrupted) { |
708 | slot->interrupted = 0; | |
709 | interrupted = true; | |
710 | } | |
711 | ||
2f92ae34 | 712 | trace_nfs4_sequence_done(session, res); |
691daf3b | 713 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
714 | switch (res->sr_status) { |
715 | case 0: | |
b0df806c | 716 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 717 | ++slot->seq_nr; |
e3725ec0 | 718 | clp = session->clp; |
8e63b6a8 | 719 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 720 | /* Check sequence flags */ |
b15c7cdd | 721 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 722 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 723 | break; |
ac20d163 TM |
724 | case 1: |
725 | /* | |
726 | * sr_status remains 1 if an RPC level error occurred. | |
727 | * The server may or may not have processed the sequence | |
728 | * operation.. | |
729 | * Mark the slot as having hosted an interrupted RPC call. | |
730 | */ | |
731 | slot->interrupted = 1; | |
732 | goto out; | |
14516c3a TM |
733 | case -NFS4ERR_DELAY: |
734 | /* The server detected a resend of the RPC call and | |
735 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
736 | * of RFC5661. | |
737 | */ | |
df2fabff | 738 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 739 | __func__, |
df2fabff | 740 | slot->slot_nr, |
933602e3 | 741 | slot->seq_nr); |
14516c3a | 742 | goto out_retry; |
85563073 TM |
743 | case -NFS4ERR_BADSLOT: |
744 | /* | |
745 | * The slot id we used was probably retired. Try again | |
746 | * using a different slot id. | |
747 | */ | |
e8794440 TM |
748 | goto retry_nowait; |
749 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
750 | /* |
751 | * Was the last operation on this sequence interrupted? | |
752 | * If so, retry after bumping the sequence number. | |
753 | */ | |
754 | if (interrupted) { | |
755 | ++slot->seq_nr; | |
756 | goto retry_nowait; | |
757 | } | |
e8794440 TM |
758 | /* |
759 | * Could this slot have been previously retired? | |
760 | * If so, then the server may be expecting seq_nr = 1! | |
761 | */ | |
8e63b6a8 TM |
762 | if (slot->seq_nr != 1) { |
763 | slot->seq_nr = 1; | |
764 | goto retry_nowait; | |
765 | } | |
766 | break; | |
e8794440 TM |
767 | case -NFS4ERR_SEQ_FALSE_RETRY: |
768 | ++slot->seq_nr; | |
769 | goto retry_nowait; | |
14516c3a TM |
770 | default: |
771 | /* Just update the slot sequence no. */ | |
933602e3 | 772 | ++slot->seq_nr; |
b0df806c AA |
773 | } |
774 | out: | |
775 | /* The session may be reset by one of the error handlers. */ | |
776 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 777 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 778 | out_noaction: |
85563073 | 779 | return ret; |
e8794440 TM |
780 | retry_nowait: |
781 | if (rpc_restart_call_prepare(task)) { | |
782 | task->tk_status = 0; | |
783 | ret = 0; | |
784 | } | |
785 | goto out; | |
14516c3a | 786 | out_retry: |
d05dd4e9 | 787 | if (!rpc_restart_call(task)) |
14516c3a TM |
788 | goto out; |
789 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
790 | return 0; | |
b0df806c | 791 | } |
f9c96fcc | 792 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 793 | |
2c4b131d | 794 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 795 | { |
e3725ec0 | 796 | if (res->sr_slot == NULL) |
14516c3a | 797 | return 1; |
3bd2384a CL |
798 | if (!res->sr_slot->table->session) |
799 | return nfs40_sequence_done(task, res); | |
14516c3a | 800 | return nfs41_sequence_done(task, res); |
df896455 | 801 | } |
2c4b131d | 802 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 803 | |
dc70d7b3 | 804 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
805 | struct nfs4_sequence_args *args, |
806 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
807 | struct rpc_task *task) |
808 | { | |
fbcd4abc AA |
809 | struct nfs4_slot *slot; |
810 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
811 | |
812 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 813 | /* slot already allocated? */ |
dfb4f309 | 814 | if (res->sr_slot != NULL) |
d9afbd1b | 815 | goto out_success; |
ce5039c1 | 816 | |
fbcd4abc AA |
817 | tbl = &session->fc_slot_table; |
818 | ||
69d206b5 TM |
819 | task->tk_timeout = 0; |
820 | ||
fbcd4abc | 821 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 822 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 823 | !args->sa_privileged) { |
0b1c8fc4 | 824 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 825 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 826 | goto out_sleep; |
689cf5c1 AB |
827 | } |
828 | ||
2dc03b7f | 829 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
830 | if (IS_ERR(slot)) { |
831 | /* If out of memory, try again in 1/4 second */ | |
832 | if (slot == ERR_PTR(-ENOMEM)) | |
833 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 834 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 835 | goto out_sleep; |
fbcd4abc AA |
836 | } |
837 | spin_unlock(&tbl->slot_tbl_lock); | |
838 | ||
2b2fa717 | 839 | args->sa_slot = slot; |
fbcd4abc | 840 | |
e8d92382 | 841 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 842 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 843 | |
dfb4f309 | 844 | res->sr_slot = slot; |
8e63b6a8 | 845 | res->sr_timestamp = jiffies; |
2a6e26cd | 846 | res->sr_status_flags = 0; |
fbcd4abc AA |
847 | /* |
848 | * sr_status is only set in decode_sequence, and so will remain | |
849 | * set to 1 if an rpc level failure occurs. | |
850 | */ | |
851 | res->sr_status = 1; | |
2f92ae34 | 852 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
853 | out_success: |
854 | rpc_call_start(task); | |
ce5039c1 | 855 | return 0; |
7b939a3f | 856 | out_sleep: |
8fe72bac TM |
857 | /* Privileged tasks are queued with top priority */ |
858 | if (args->sa_privileged) | |
1e1093c7 TM |
859 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
860 | NULL, RPC_PRIORITY_PRIVILEGED); | |
861 | else | |
862 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
863 | spin_unlock(&tbl->slot_tbl_lock); |
864 | return -EAGAIN; | |
ce5039c1 | 865 | } |
dc70d7b3 | 866 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 867 | |
5a580e0a CL |
868 | static int nfs4_setup_sequence(const struct nfs_server *server, |
869 | struct nfs4_sequence_args *args, | |
870 | struct nfs4_sequence_res *res, | |
871 | struct rpc_task *task) | |
ce5039c1 | 872 | { |
035168ab | 873 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
874 | int ret = 0; |
875 | ||
3bd2384a | 876 | if (!session) |
cb04ad2a PT |
877 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
878 | args, res, task); | |
035168ab | 879 | |
e8d92382 | 880 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 881 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 882 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 883 | |
9d12b216 | 884 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 885 | |
ce5039c1 AA |
886 | dprintk("<-- %s status=%d\n", __func__, ret); |
887 | return ret; | |
888 | } | |
889 | ||
ce5039c1 AA |
890 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
891 | { | |
2a3eb2b9 | 892 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 893 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 894 | |
035168ab TM |
895 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
896 | ||
d9afbd1b | 897 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
898 | } |
899 | ||
69ab40c4 AA |
900 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
901 | { | |
2a3eb2b9 | 902 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 903 | |
14516c3a | 904 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
905 | } |
906 | ||
17280175 | 907 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 908 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 909 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
910 | }; |
911 | ||
3bd2384a CL |
912 | #else /* !CONFIG_NFS_V4_1 */ |
913 | ||
9915ea7e CL |
914 | static int nfs4_setup_sequence(const struct nfs_server *server, |
915 | struct nfs4_sequence_args *args, | |
916 | struct nfs4_sequence_res *res, | |
917 | struct rpc_task *task) | |
918 | { | |
cb04ad2a PT |
919 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
920 | args, res, task); | |
9915ea7e CL |
921 | } |
922 | ||
2c4b131d PT |
923 | int nfs4_sequence_done(struct rpc_task *task, |
924 | struct nfs4_sequence_res *res) | |
9915ea7e | 925 | { |
3bd2384a | 926 | return nfs40_sequence_done(task, res); |
9915ea7e | 927 | } |
2c4b131d | 928 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
929 | |
930 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
931 | |
932 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
933 | { | |
934 | struct nfs4_call_sync_data *data = calldata; | |
935 | nfs4_setup_sequence(data->seq_server, | |
936 | data->seq_args, data->seq_res, task); | |
937 | } | |
938 | ||
939 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
940 | { | |
941 | struct nfs4_call_sync_data *data = calldata; | |
942 | nfs4_sequence_done(task, data->seq_res); | |
943 | } | |
944 | ||
945 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
946 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
947 | .rpc_call_done = nfs40_call_sync_done, | |
948 | }; | |
949 | ||
7c513058 BS |
950 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
951 | struct nfs_server *server, | |
ce5039c1 AA |
952 | struct rpc_message *msg, |
953 | struct nfs4_sequence_args *args, | |
8fe72bac | 954 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
955 | { |
956 | int ret; | |
957 | struct rpc_task *task; | |
9915ea7e | 958 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 959 | struct nfs4_call_sync_data data = { |
035168ab | 960 | .seq_server = server, |
ce5039c1 AA |
961 | .seq_args = args, |
962 | .seq_res = res, | |
ce5039c1 AA |
963 | }; |
964 | struct rpc_task_setup task_setup = { | |
7c513058 | 965 | .rpc_client = clnt, |
ce5039c1 | 966 | .rpc_message = msg, |
9915ea7e | 967 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
968 | .callback_data = &data |
969 | }; | |
970 | ||
ce5039c1 AA |
971 | task = rpc_run_task(&task_setup); |
972 | if (IS_ERR(task)) | |
973 | ret = PTR_ERR(task); | |
974 | else { | |
975 | ret = task->tk_status; | |
976 | rpc_put_task(task); | |
977 | } | |
978 | return ret; | |
979 | } | |
980 | ||
7c513058 BS |
981 | int nfs4_call_sync(struct rpc_clnt *clnt, |
982 | struct nfs_server *server, | |
e73b83f2 BS |
983 | struct rpc_message *msg, |
984 | struct nfs4_sequence_args *args, | |
985 | struct nfs4_sequence_res *res, | |
986 | int cache_reply) | |
987 | { | |
a9c92d6b | 988 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 989 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 990 | } |
cccef3b9 | 991 | |
38478b24 | 992 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 993 | { |
38478b24 | 994 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 995 | |
38478b24 | 996 | spin_lock(&dir->i_lock); |
359d7d1c | 997 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 998 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 999 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 1000 | dir->i_version = cinfo->after; |
3235b403 | 1001 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 1002 | nfs_fscache_invalidate(dir); |
38478b24 | 1003 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
1004 | } |
1005 | ||
e56e0b78 | 1006 | struct nfs4_opendata { |
c6d00e63 | 1007 | struct kref kref; |
e56e0b78 TM |
1008 | struct nfs_openargs o_arg; |
1009 | struct nfs_openres o_res; | |
cdd4e68b TM |
1010 | struct nfs_open_confirmargs c_arg; |
1011 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
1012 | struct nfs4_string owner_name; |
1013 | struct nfs4_string group_name; | |
a49c2691 | 1014 | struct nfs4_label *a_label; |
e56e0b78 | 1015 | struct nfs_fattr f_attr; |
1775fd3e | 1016 | struct nfs4_label *f_label; |
e56e0b78 | 1017 | struct dentry *dir; |
82a2c1b7 | 1018 | struct dentry *dentry; |
e56e0b78 | 1019 | struct nfs4_state_owner *owner; |
aac00a8d | 1020 | struct nfs4_state *state; |
e56e0b78 | 1021 | struct iattr attrs; |
26e976a8 | 1022 | unsigned long timestamp; |
3e309914 | 1023 | unsigned int rpc_done : 1; |
5bc2afc2 | 1024 | unsigned int file_created : 1; |
bdeca1b7 | 1025 | unsigned int is_recover : 1; |
24ac23ab TM |
1026 | int rpc_status; |
1027 | int cancelled; | |
e56e0b78 TM |
1028 | }; |
1029 | ||
49f9a0fa TM |
1030 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1031 | int err, struct nfs4_exception *exception) | |
1032 | { | |
1033 | if (err != -EINVAL) | |
1034 | return false; | |
1035 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1036 | return false; | |
1037 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1038 | exception->retry = 1; | |
1039 | return true; | |
1040 | } | |
1041 | ||
6ae37339 TM |
1042 | static u32 |
1043 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1044 | fmode_t fmode, int openflags) | |
1045 | { | |
1046 | u32 res = 0; | |
1047 | ||
1048 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1049 | case FMODE_READ: | |
1050 | res = NFS4_SHARE_ACCESS_READ; | |
1051 | break; | |
1052 | case FMODE_WRITE: | |
1053 | res = NFS4_SHARE_ACCESS_WRITE; | |
1054 | break; | |
1055 | case FMODE_READ|FMODE_WRITE: | |
1056 | res = NFS4_SHARE_ACCESS_BOTH; | |
1057 | } | |
1058 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1059 | goto out; | |
1060 | /* Want no delegation if we're using O_DIRECT */ | |
1061 | if (openflags & O_DIRECT) | |
1062 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1063 | out: | |
1064 | return res; | |
1065 | } | |
1066 | ||
49f9a0fa TM |
1067 | static enum open_claim_type4 |
1068 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1069 | enum open_claim_type4 claim) | |
1070 | { | |
1071 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1072 | return claim; | |
1073 | switch (claim) { | |
1074 | default: | |
1075 | return claim; | |
1076 | case NFS4_OPEN_CLAIM_FH: | |
1077 | return NFS4_OPEN_CLAIM_NULL; | |
1078 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1079 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1080 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1081 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1082 | } | |
1083 | } | |
2ced46c2 TM |
1084 | |
1085 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1086 | { | |
1087 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1088 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1089 | p->o_res.seqid = p->o_arg.seqid; |
1090 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1091 | p->o_res.server = p->o_arg.server; |
5f657530 | 1092 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1093 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1094 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1095 | } |
1096 | ||
82a2c1b7 | 1097 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1098 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1099 | const struct iattr *attrs, |
1775fd3e | 1100 | struct nfs4_label *label, |
4a1c0893 | 1101 | enum open_claim_type4 claim, |
8535b2be | 1102 | gfp_t gfp_mask) |
e56e0b78 | 1103 | { |
82a2c1b7 | 1104 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1105 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1106 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1107 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1108 | struct nfs4_opendata *p; |
1109 | ||
8535b2be | 1110 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1111 | if (p == NULL) |
1112 | goto err; | |
14c43f76 DQ |
1113 | |
1114 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1115 | if (IS_ERR(p->f_label)) | |
1116 | goto err_free_p; | |
1117 | ||
a49c2691 KM |
1118 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1119 | if (IS_ERR(p->a_label)) | |
1120 | goto err_free_f; | |
1121 | ||
63f5f796 TM |
1122 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1123 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1124 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1125 | goto err_free_label; |
82a2c1b7 AV |
1126 | nfs_sb_active(dentry->d_sb); |
1127 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1128 | p->dir = parent; |
1129 | p->owner = sp; | |
1130 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1131 | p->o_arg.open_flags = flags; |
1132 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1133 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1134 | fmode, flags); | |
ae2bb032 WAA |
1135 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1136 | * will return permission denied for all bits until close */ | |
1137 | if (!(flags & O_EXCL)) { | |
1138 | /* ask server to check for all possible rights as results | |
1139 | * are cached */ | |
1140 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1141 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1142 | } |
7539bbab | 1143 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1144 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1145 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1146 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1147 | p->o_arg.server = server; |
aa9c2669 | 1148 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1149 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1150 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1151 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1152 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1153 | case NFS4_OPEN_CLAIM_NULL: |
1154 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1155 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1156 | p->o_arg.fh = NFS_FH(dir); | |
1157 | break; | |
1158 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1159 | case NFS4_OPEN_CLAIM_FH: | |
1160 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1161 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1162 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1163 | } |
536e43d1 | 1164 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1165 | __u32 verf[2]; |
d77d76ff | 1166 | |
e56e0b78 TM |
1167 | p->o_arg.u.attrs = &p->attrs; |
1168 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1169 | |
1170 | verf[0] = jiffies; | |
1171 | verf[1] = current->pid; | |
1172 | memcpy(p->o_arg.u.verifier.data, verf, | |
1173 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1174 | } |
cdd4e68b TM |
1175 | p->c_arg.fh = &p->o_res.fh; |
1176 | p->c_arg.stateid = &p->o_res.stateid; | |
1177 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1178 | nfs4_init_opendata_res(p); |
c6d00e63 | 1179 | kref_init(&p->kref); |
e56e0b78 | 1180 | return p; |
14c43f76 DQ |
1181 | |
1182 | err_free_label: | |
a49c2691 KM |
1183 | nfs4_label_free(p->a_label); |
1184 | err_free_f: | |
14c43f76 DQ |
1185 | nfs4_label_free(p->f_label); |
1186 | err_free_p: | |
e56e0b78 TM |
1187 | kfree(p); |
1188 | err: | |
1189 | dput(parent); | |
1190 | return NULL; | |
1191 | } | |
1192 | ||
c6d00e63 | 1193 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1194 | { |
c6d00e63 TM |
1195 | struct nfs4_opendata *p = container_of(kref, |
1196 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1197 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1198 | |
1199 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1200 | if (p->state != NULL) |
1201 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1202 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1203 | |
a49c2691 | 1204 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1205 | nfs4_label_free(p->f_label); |
1206 | ||
c6d00e63 | 1207 | dput(p->dir); |
82a2c1b7 AV |
1208 | dput(p->dentry); |
1209 | nfs_sb_deactive(sb); | |
6926afd1 | 1210 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1211 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1212 | kfree(p); |
1213 | } | |
1214 | ||
1215 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1216 | { | |
1217 | if (p != NULL) | |
1218 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1219 | } |
1220 | ||
06f814a3 TM |
1221 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1222 | { | |
06f814a3 TM |
1223 | int ret; |
1224 | ||
06f814a3 | 1225 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1226 | return ret; |
1227 | } | |
1228 | ||
24311f88 TM |
1229 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1230 | fmode_t fmode) | |
1231 | { | |
1232 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1233 | case FMODE_READ|FMODE_WRITE: | |
1234 | return state->n_rdwr != 0; | |
1235 | case FMODE_WRITE: | |
1236 | return state->n_wronly != 0; | |
1237 | case FMODE_READ: | |
1238 | return state->n_rdonly != 0; | |
1239 | } | |
1240 | WARN_ON_ONCE(1); | |
1241 | return false; | |
1242 | } | |
1243 | ||
dc0b027d | 1244 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1245 | { |
1246 | int ret = 0; | |
dc0b027d | 1247 | |
536e43d1 | 1248 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1249 | goto out; |
1250 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1251 | case FMODE_READ: |
88069f77 TM |
1252 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1253 | && state->n_rdonly != 0; | |
6ee41268 TM |
1254 | break; |
1255 | case FMODE_WRITE: | |
88069f77 TM |
1256 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1257 | && state->n_wronly != 0; | |
6ee41268 TM |
1258 | break; |
1259 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1260 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1261 | && state->n_rdwr != 0; | |
6ee41268 | 1262 | } |
dc0b027d | 1263 | out: |
6ee41268 TM |
1264 | return ret; |
1265 | } | |
1266 | ||
2a606188 TM |
1267 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1268 | enum open_claim_type4 claim) | |
aac00a8d | 1269 | { |
652f89f6 TM |
1270 | if (delegation == NULL) |
1271 | return 0; | |
dc0b027d | 1272 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1273 | return 0; |
d25be546 TM |
1274 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1275 | return 0; | |
2a606188 TM |
1276 | switch (claim) { |
1277 | case NFS4_OPEN_CLAIM_NULL: | |
1278 | case NFS4_OPEN_CLAIM_FH: | |
1279 | break; | |
1280 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1281 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1282 | break; | |
1283 | default: | |
1284 | return 0; | |
1285 | } | |
b7391f44 | 1286 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1287 | return 1; |
1288 | } | |
1289 | ||
dc0b027d | 1290 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1291 | { |
dc0b027d | 1292 | switch (fmode) { |
e7616923 TM |
1293 | case FMODE_WRITE: |
1294 | state->n_wronly++; | |
1295 | break; | |
1296 | case FMODE_READ: | |
1297 | state->n_rdonly++; | |
1298 | break; | |
1299 | case FMODE_READ|FMODE_WRITE: | |
1300 | state->n_rdwr++; | |
1301 | } | |
dc0b027d | 1302 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1303 | } |
1304 | ||
4f14c194 TM |
1305 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1306 | { | |
1307 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1308 | bool need_recover = false; | |
1309 | ||
1310 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1311 | need_recover = true; | |
1312 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1313 | need_recover = true; | |
1314 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1315 | need_recover = true; | |
1316 | if (need_recover) | |
1317 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1318 | } | |
1319 | ||
e999e80e TM |
1320 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1321 | nfs4_stateid *stateid) | |
1322 | { | |
1323 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1324 | return true; | |
4f14c194 TM |
1325 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1326 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1327 | return true; |
4f14c194 | 1328 | } |
e999e80e TM |
1329 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1330 | return true; | |
1331 | return false; | |
1332 | } | |
1333 | ||
f95549cf TM |
1334 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1335 | { | |
3c38cbe2 TM |
1336 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1337 | return; | |
f95549cf TM |
1338 | if (state->n_wronly) |
1339 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1340 | if (state->n_rdonly) | |
1341 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1342 | if (state->n_rdwr) | |
1343 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1344 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1345 | } |
1346 | ||
226056c5 | 1347 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1348 | nfs4_stateid *arg_stateid, |
226056c5 | 1349 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1350 | { |
226056c5 TM |
1351 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1352 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1353 | case FMODE_WRITE: | |
1354 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1355 | break; | |
1356 | case FMODE_READ: | |
1357 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1358 | break; | |
1359 | case 0: | |
1360 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1361 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1362 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1363 | } | |
1364 | if (stateid == NULL) | |
1365 | return; | |
f95549cf | 1366 | /* Handle races with OPEN */ |
4a1e2feb TM |
1367 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1368 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1369 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1370 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1371 | return; |
f95549cf | 1372 | } |
003707c7 | 1373 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1374 | nfs4_stateid_copy(&state->stateid, stateid); |
1375 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1376 | } |
1377 | ||
4a1e2feb TM |
1378 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1379 | nfs4_stateid *arg_stateid, | |
1380 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1381 | { |
1382 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1383 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1384 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1385 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1386 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1387 | } |
1388 | ||
dc0b027d | 1389 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1390 | { |
dc0b027d | 1391 | switch (fmode) { |
003707c7 TM |
1392 | case FMODE_READ: |
1393 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1394 | break; | |
1395 | case FMODE_WRITE: | |
1396 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1397 | break; | |
1398 | case FMODE_READ|FMODE_WRITE: | |
1399 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1400 | } | |
e999e80e TM |
1401 | if (!nfs_need_update_open_stateid(state, stateid)) |
1402 | return; | |
1403 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1404 | nfs4_stateid_copy(&state->stateid, stateid); | |
1405 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1406 | } |
1407 | ||
dc0b027d | 1408 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1409 | { |
8bda4e4c TM |
1410 | /* |
1411 | * Protect the call to nfs4_state_set_mode_locked and | |
1412 | * serialise the stateid update | |
1413 | */ | |
361cad3c | 1414 | spin_lock(&state->owner->so_lock); |
8bda4e4c | 1415 | write_seqlock(&state->seqlock); |
003707c7 | 1416 | if (deleg_stateid != NULL) { |
f597c537 | 1417 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1418 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1419 | } | |
1420 | if (open_stateid != NULL) | |
dc0b027d | 1421 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c | 1422 | write_sequnlock(&state->seqlock); |
dc0b027d | 1423 | update_open_stateflags(state, fmode); |
ec073428 | 1424 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1425 | } |
1426 | ||
dc0b027d | 1427 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1428 | { |
1429 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1430 | struct nfs_delegation *deleg_cur; | |
1431 | int ret = 0; | |
1432 | ||
dc0b027d | 1433 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1434 | |
1435 | rcu_read_lock(); | |
1436 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1437 | if (deleg_cur == NULL) | |
1438 | goto no_delegation; | |
1439 | ||
1440 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1441 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1442 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1443 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1444 | goto no_delegation_unlock; |
1445 | ||
1446 | if (delegation == NULL) | |
1447 | delegation = &deleg_cur->stateid; | |
f597c537 | 1448 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1449 | goto no_delegation_unlock; |
1450 | ||
b7391f44 | 1451 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1452 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1453 | ret = 1; |
1454 | no_delegation_unlock: | |
1455 | spin_unlock(&deleg_cur->lock); | |
1456 | no_delegation: | |
1457 | rcu_read_unlock(); | |
1458 | ||
1459 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1460 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1461 | ret = 1; |
1462 | } | |
4f14c194 TM |
1463 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1464 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1465 | |
1466 | return ret; | |
1467 | } | |
1468 | ||
39071e6f TM |
1469 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1470 | const nfs4_stateid *stateid) | |
1471 | { | |
1472 | struct nfs4_state *state = lsp->ls_state; | |
1473 | bool ret = false; | |
1474 | ||
1475 | spin_lock(&state->state_lock); | |
1476 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1477 | goto out_noupdate; | |
1478 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1479 | goto out_noupdate; | |
1480 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1481 | ret = true; | |
1482 | out_noupdate: | |
1483 | spin_unlock(&state->state_lock); | |
1484 | return ret; | |
1485 | } | |
34310430 | 1486 | |
dc0b027d | 1487 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1488 | { |
1489 | struct nfs_delegation *delegation; | |
1490 | ||
1491 | rcu_read_lock(); | |
1492 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1493 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1494 | rcu_read_unlock(); |
1495 | return; | |
1496 | } | |
1497 | rcu_read_unlock(); | |
57ec14c5 | 1498 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1499 | } |
1500 | ||
6ee41268 | 1501 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1502 | { |
1503 | struct nfs4_state *state = opendata->state; | |
1504 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1505 | struct nfs_delegation *delegation; | |
f448badd | 1506 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1507 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1508 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1509 | nfs4_stateid stateid; |
1510 | int ret = -EAGAIN; | |
1511 | ||
aac00a8d | 1512 | for (;;) { |
61beef75 | 1513 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1514 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1515 | update_open_stateflags(state, fmode); |
6ee41268 | 1516 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1517 | goto out_return_state; |
6ee41268 | 1518 | } |
61beef75 | 1519 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1520 | rcu_read_lock(); |
1521 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1522 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1523 | rcu_read_unlock(); |
aac00a8d | 1524 | break; |
34310430 | 1525 | } |
aac00a8d | 1526 | /* Save the delegation */ |
f597c537 | 1527 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1528 | rcu_read_unlock(); |
fa332941 | 1529 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1530 | if (!opendata->is_recover) { |
1531 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1532 | if (ret != 0) | |
1533 | goto out; | |
1534 | } | |
aac00a8d | 1535 | ret = -EAGAIN; |
34310430 TM |
1536 | |
1537 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1538 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1539 | goto out_return_state; |
aac00a8d | 1540 | } |
aac00a8d TM |
1541 | out: |
1542 | return ERR_PTR(ret); | |
1543 | out_return_state: | |
1544 | atomic_inc(&state->count); | |
1545 | return state; | |
1546 | } | |
1547 | ||
e23008ec AA |
1548 | static void |
1549 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1550 | { | |
1551 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1552 | struct nfs_delegation *delegation; | |
1553 | int delegation_flags = 0; | |
1554 | ||
1555 | rcu_read_lock(); | |
1556 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1557 | if (delegation) | |
1558 | delegation_flags = delegation->flags; | |
1559 | rcu_read_unlock(); | |
72d79ff8 TM |
1560 | switch (data->o_arg.claim) { |
1561 | default: | |
1562 | break; | |
1563 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1564 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1565 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1566 | "returning a delegation for " | |
1567 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1568 | clp->cl_hostname); | |
72d79ff8 TM |
1569 | return; |
1570 | } | |
1571 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec AA |
1572 | nfs_inode_set_delegation(state->inode, |
1573 | data->owner->so_cred, | |
1574 | &data->o_res); | |
1575 | else | |
1576 | nfs_inode_reclaim_delegation(state->inode, | |
1577 | data->owner->so_cred, | |
1578 | &data->o_res); | |
1579 | } | |
1580 | ||
1581 | /* | |
1582 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1583 | * and update the nfs4_state. | |
1584 | */ | |
1585 | static struct nfs4_state * | |
1586 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1587 | { | |
1588 | struct inode *inode = data->state->inode; | |
1589 | struct nfs4_state *state = data->state; | |
1590 | int ret; | |
1591 | ||
d2bfda2e WAA |
1592 | if (!data->rpc_done) { |
1593 | if (data->rpc_status) { | |
1594 | ret = data->rpc_status; | |
1595 | goto err; | |
1596 | } | |
1597 | /* cached opens have already been processed */ | |
1598 | goto update; | |
e23008ec AA |
1599 | } |
1600 | ||
e23008ec AA |
1601 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1602 | if (ret) | |
1603 | goto err; | |
1604 | ||
1605 | if (data->o_res.delegation_type != 0) | |
1606 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1607 | update: |
e23008ec AA |
1608 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1609 | data->o_arg.fmode); | |
d49f042a | 1610 | atomic_inc(&state->count); |
e23008ec AA |
1611 | |
1612 | return state; | |
1613 | err: | |
1614 | return ERR_PTR(ret); | |
1615 | ||
1616 | } | |
1617 | ||
1618 | static struct nfs4_state * | |
1619 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1620 | { |
1621 | struct inode *inode; | |
1622 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1623 | int ret; |
24ac23ab | 1624 | |
aac00a8d | 1625 | if (!data->rpc_done) { |
6ee41268 | 1626 | state = nfs4_try_open_cached(data); |
9759b0fb | 1627 | trace_nfs4_cached_open(data->state); |
aac00a8d TM |
1628 | goto out; |
1629 | } | |
1630 | ||
1b370bc2 | 1631 | ret = -EAGAIN; |
24ac23ab | 1632 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1633 | goto err; |
1775fd3e | 1634 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1635 | ret = PTR_ERR(inode); |
03f28e3a | 1636 | if (IS_ERR(inode)) |
1b370bc2 TM |
1637 | goto err; |
1638 | ret = -ENOMEM; | |
24ac23ab TM |
1639 | state = nfs4_get_open_state(inode, data->owner); |
1640 | if (state == NULL) | |
1b370bc2 | 1641 | goto err_put_inode; |
e23008ec AA |
1642 | if (data->o_res.delegation_type != 0) |
1643 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1644 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1645 | data->o_arg.fmode); |
24ac23ab | 1646 | iput(inode); |
aac00a8d | 1647 | out: |
7aa262b5 | 1648 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1649 | return state; |
1b370bc2 TM |
1650 | err_put_inode: |
1651 | iput(inode); | |
1652 | err: | |
1653 | return ERR_PTR(ret); | |
24ac23ab TM |
1654 | } |
1655 | ||
e23008ec AA |
1656 | static struct nfs4_state * |
1657 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1658 | { | |
1659 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1660 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1661 | return _nfs4_opendata_to_nfs4_state(data); | |
1662 | } | |
1663 | ||
864472e9 TM |
1664 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1665 | { | |
1666 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1667 | struct nfs_open_context *ctx; | |
1668 | ||
1669 | spin_lock(&state->inode->i_lock); | |
1670 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1671 | if (ctx->state != state) | |
1672 | continue; | |
1673 | get_nfs_open_context(ctx); | |
1674 | spin_unlock(&state->inode->i_lock); | |
1675 | return ctx; | |
1676 | } | |
1677 | spin_unlock(&state->inode->i_lock); | |
1678 | return ERR_PTR(-ENOENT); | |
1679 | } | |
1680 | ||
4a1c0893 TM |
1681 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1682 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1683 | { |
1684 | struct nfs4_opendata *opendata; | |
1685 | ||
4a1c0893 | 1686 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1687 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1688 | if (opendata == NULL) |
1689 | return ERR_PTR(-ENOMEM); | |
1690 | opendata->state = state; | |
1691 | atomic_inc(&state->count); | |
1692 | return opendata; | |
1693 | } | |
1694 | ||
24311f88 TM |
1695 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
1696 | fmode_t fmode) | |
864472e9 | 1697 | { |
2ced46c2 | 1698 | struct nfs4_state *newstate; |
864472e9 TM |
1699 | int ret; |
1700 | ||
24311f88 | 1701 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 1702 | return 0; |
dc0b027d TM |
1703 | opendata->o_arg.open_flags = 0; |
1704 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1705 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1706 | NFS_SB(opendata->dentry->d_sb), | |
1707 | fmode, 0); | |
2ced46c2 TM |
1708 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1709 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1710 | nfs4_init_opendata_res(opendata); | |
b257957e | 1711 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1712 | if (ret != 0) |
1713 | return ret; | |
2ced46c2 | 1714 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1715 | if (IS_ERR(newstate)) |
1716 | return PTR_ERR(newstate); | |
24311f88 TM |
1717 | if (newstate != opendata->state) |
1718 | ret = -ESTALE; | |
643168c2 | 1719 | nfs4_close_state(newstate, fmode); |
24311f88 | 1720 | return ret; |
864472e9 TM |
1721 | } |
1722 | ||
1723 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1724 | { | |
864472e9 TM |
1725 | int ret; |
1726 | ||
4f14c194 TM |
1727 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1728 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1729 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1730 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1731 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1732 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1733 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 | 1734 | smp_rmb(); |
24311f88 TM |
1735 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
1736 | if (ret != 0) | |
1737 | return ret; | |
1738 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1739 | if (ret != 0) | |
1740 | return ret; | |
1741 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1742 | if (ret != 0) | |
1743 | return ret; | |
1ac7e2fd TM |
1744 | /* |
1745 | * We may have performed cached opens for all three recoveries. | |
1746 | * Check if we need to update the current stateid. | |
1747 | */ | |
1748 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1749 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1750 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1751 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1752 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1753 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1754 | } |
864472e9 TM |
1755 | return 0; |
1756 | } | |
1757 | ||
1da177e4 LT |
1758 | /* |
1759 | * OPEN_RECLAIM: | |
1760 | * reclaim state on the server after a reboot. | |
1da177e4 | 1761 | */ |
539cd03a | 1762 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1763 | { |
1ac7e2fd | 1764 | struct nfs_delegation *delegation; |
864472e9 | 1765 | struct nfs4_opendata *opendata; |
dc0b027d | 1766 | fmode_t delegation_type = 0; |
1da177e4 LT |
1767 | int status; |
1768 | ||
4a1c0893 TM |
1769 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1770 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1771 | if (IS_ERR(opendata)) |
1772 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1773 | rcu_read_lock(); |
1774 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1775 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1776 | delegation_type = delegation->type; |
1ac7e2fd | 1777 | rcu_read_unlock(); |
864472e9 TM |
1778 | opendata->o_arg.u.delegation_type = delegation_type; |
1779 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1780 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1781 | return status; |
1782 | } | |
1783 | ||
539cd03a | 1784 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1785 | { |
1786 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1787 | struct nfs4_exception exception = { }; | |
1788 | int err; | |
1789 | do { | |
539cd03a | 1790 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1791 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1792 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1793 | continue; | |
168667c4 | 1794 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1795 | break; |
1796 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1797 | } while (exception.retry); |
1798 | return err; | |
1799 | } | |
1800 | ||
864472e9 TM |
1801 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1802 | { | |
1803 | struct nfs_open_context *ctx; | |
1804 | int ret; | |
1805 | ||
1806 | ctx = nfs4_state_find_open_context(state); | |
1807 | if (IS_ERR(ctx)) | |
91876b13 | 1808 | return -EAGAIN; |
539cd03a | 1809 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1810 | put_nfs_open_context(ctx); |
1811 | return ret; | |
1812 | } | |
1813 | ||
db4f2e63 | 1814 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1815 | { |
be76b5b6 TM |
1816 | switch (err) { |
1817 | default: | |
1818 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1819 | "%d.\n", __func__, err); | |
1820 | case 0: | |
1821 | case -ENOENT: | |
8eee52af | 1822 | case -EAGAIN: |
be76b5b6 TM |
1823 | case -ESTALE: |
1824 | break; | |
1825 | case -NFS4ERR_BADSESSION: | |
1826 | case -NFS4ERR_BADSLOT: | |
1827 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1828 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1829 | case -NFS4ERR_DEADSESSION: | |
1830 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1831 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1832 | return -EAGAIN; | |
1833 | case -NFS4ERR_STALE_CLIENTID: | |
1834 | case -NFS4ERR_STALE_STATEID: | |
1835 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1836 | case -NFS4ERR_EXPIRED: | |
1837 | /* Don't recall a delegation if it was lost */ | |
1838 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1839 | return -EAGAIN; | |
352297b9 CL |
1840 | case -NFS4ERR_MOVED: |
1841 | nfs4_schedule_migration_recovery(server); | |
1842 | return -EAGAIN; | |
8ef2f8d4 CL |
1843 | case -NFS4ERR_LEASE_MOVED: |
1844 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1845 | return -EAGAIN; | |
be76b5b6 TM |
1846 | case -NFS4ERR_DELEG_REVOKED: |
1847 | case -NFS4ERR_ADMIN_REVOKED: | |
1848 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1849 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1850 | nfs_inode_find_state_and_recover(state->inode, |
1851 | stateid); | |
1852 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1853 | return -EAGAIN; |
be76b5b6 TM |
1854 | case -NFS4ERR_DELAY: |
1855 | case -NFS4ERR_GRACE: | |
1856 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1857 | ssleep(1); | |
1858 | return -EAGAIN; | |
db4f2e63 TM |
1859 | case -ENOMEM: |
1860 | case -NFS4ERR_DENIED: | |
1861 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1862 | return 0; | |
be76b5b6 | 1863 | } |
1da177e4 LT |
1864 | return err; |
1865 | } | |
1866 | ||
24311f88 TM |
1867 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
1868 | struct nfs4_state *state, const nfs4_stateid *stateid, | |
1869 | fmode_t type) | |
db4f2e63 TM |
1870 | { |
1871 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1872 | struct nfs4_opendata *opendata; | |
24311f88 | 1873 | int err = 0; |
db4f2e63 TM |
1874 | |
1875 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1876 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1877 | if (IS_ERR(opendata)) | |
1878 | return PTR_ERR(opendata); | |
1879 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5e99b532 JL |
1880 | write_seqlock(&state->seqlock); |
1881 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1882 | write_sequnlock(&state->seqlock); | |
24311f88 TM |
1883 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1884 | switch (type & (FMODE_READ|FMODE_WRITE)) { | |
1885 | case FMODE_READ|FMODE_WRITE: | |
1886 | case FMODE_WRITE: | |
1887 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); | |
1888 | if (err) | |
1889 | break; | |
1890 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1891 | if (err) | |
1892 | break; | |
1893 | case FMODE_READ: | |
1894 | err = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1895 | } | |
db4f2e63 TM |
1896 | nfs4_opendata_put(opendata); |
1897 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1898 | } | |
1899 | ||
be05c860 CL |
1900 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1901 | { | |
1902 | struct nfs4_opendata *data = calldata; | |
1903 | ||
cb04ad2a PT |
1904 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1905 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1906 | } |
1907 | ||
cdd4e68b TM |
1908 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1909 | { | |
1910 | struct nfs4_opendata *data = calldata; | |
1911 | ||
17ead6c8 | 1912 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1913 | |
cdd4e68b | 1914 | data->rpc_status = task->tk_status; |
26e976a8 | 1915 | if (data->rpc_status == 0) { |
f597c537 | 1916 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1917 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1918 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1919 | data->rpc_done = 1; |
26e976a8 | 1920 | } |
cdd4e68b TM |
1921 | } |
1922 | ||
1923 | static void nfs4_open_confirm_release(void *calldata) | |
1924 | { | |
1925 | struct nfs4_opendata *data = calldata; | |
1926 | struct nfs4_state *state = NULL; | |
1927 | ||
1928 | /* If this request hasn't been cancelled, do nothing */ | |
1929 | if (data->cancelled == 0) | |
1930 | goto out_free; | |
1931 | /* In case of error, no cleanup! */ | |
3e309914 | 1932 | if (!data->rpc_done) |
cdd4e68b | 1933 | goto out_free; |
cdd4e68b | 1934 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1935 | if (!IS_ERR(state)) |
643168c2 | 1936 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1937 | out_free: |
c6d00e63 | 1938 | nfs4_opendata_put(data); |
cdd4e68b TM |
1939 | } |
1940 | ||
1941 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1942 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1943 | .rpc_call_done = nfs4_open_confirm_done, |
1944 | .rpc_release = nfs4_open_confirm_release, | |
1945 | }; | |
1946 | ||
1947 | /* | |
1948 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1949 | */ | |
1950 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1951 | { | |
2b0143b5 | 1952 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1953 | struct rpc_task *task; |
5138fde0 TM |
1954 | struct rpc_message msg = { |
1955 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1956 | .rpc_argp = &data->c_arg, | |
1957 | .rpc_resp = &data->c_res, | |
1958 | .rpc_cred = data->owner->so_cred, | |
1959 | }; | |
c970aa85 TM |
1960 | struct rpc_task_setup task_setup_data = { |
1961 | .rpc_client = server->client, | |
5138fde0 | 1962 | .rpc_message = &msg, |
c970aa85 TM |
1963 | .callback_ops = &nfs4_open_confirm_ops, |
1964 | .callback_data = data, | |
101070ca | 1965 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1966 | .flags = RPC_TASK_ASYNC, |
1967 | }; | |
1da177e4 LT |
1968 | int status; |
1969 | ||
17ead6c8 | 1970 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1971 | kref_get(&data->kref); |
3e309914 TM |
1972 | data->rpc_done = 0; |
1973 | data->rpc_status = 0; | |
5138fde0 | 1974 | data->timestamp = jiffies; |
e92c1e0d BC |
1975 | if (data->is_recover) |
1976 | nfs4_set_sequence_privileged(&data->c_arg.seq_args); | |
c970aa85 | 1977 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1978 | if (IS_ERR(task)) |
cdd4e68b | 1979 | return PTR_ERR(task); |
cdd4e68b TM |
1980 | status = nfs4_wait_for_completion_rpc_task(task); |
1981 | if (status != 0) { | |
1982 | data->cancelled = 1; | |
1983 | smp_wmb(); | |
1984 | } else | |
1985 | status = data->rpc_status; | |
e6b3c4db | 1986 | rpc_put_task(task); |
1da177e4 LT |
1987 | return status; |
1988 | } | |
1989 | ||
24ac23ab | 1990 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1991 | { |
24ac23ab TM |
1992 | struct nfs4_opendata *data = calldata; |
1993 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1994 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 1995 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 1996 | |
24ac23ab | 1997 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1998 | goto out_wait; |
aac00a8d TM |
1999 | /* |
2000 | * Check if we still need to send an OPEN call, or if we can use | |
2001 | * a delegation instead. | |
2002 | */ | |
2003 | if (data->state != NULL) { | |
2004 | struct nfs_delegation *delegation; | |
2005 | ||
dc0b027d | 2006 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 2007 | goto out_no_action; |
aac00a8d TM |
2008 | rcu_read_lock(); |
2009 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 2010 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 2011 | goto unlock_no_action; |
aac00a8d TM |
2012 | rcu_read_unlock(); |
2013 | } | |
95b72eb0 | 2014 | /* Update client id. */ |
549b19cc | 2015 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
2016 | switch (claim) { |
2017 | default: | |
2018 | break; | |
8188df17 TM |
2019 | case NFS4_OPEN_CLAIM_PREVIOUS: |
2020 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
2021 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 2022 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
2023 | case NFS4_OPEN_CLAIM_FH: |
2024 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
2025 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
2026 | } | |
26e976a8 | 2027 | data->timestamp = jiffies; |
035168ab | 2028 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 2029 | &data->o_arg.seq_args, |
2240a9e2 TM |
2030 | &data->o_res.seq_res, |
2031 | task) != 0) | |
2032 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2033 | |
2034 | /* Set the create mode (note dependency on the session type) */ | |
2035 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2036 | if (data->o_arg.open_flags & O_EXCL) { | |
2037 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2038 | if (nfs4_has_persistent_session(clp)) | |
2039 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2040 | else if (clp->cl_mvops->minor_version > 0) | |
2041 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2042 | } | |
6ee41268 | 2043 | return; |
652f89f6 | 2044 | unlock_no_action: |
9759b0fb | 2045 | trace_nfs4_cached_open(data->state); |
652f89f6 | 2046 | rcu_read_unlock(); |
6ee41268 TM |
2047 | out_no_action: |
2048 | task->tk_action = NULL; | |
c8da19b9 | 2049 | out_wait: |
b75ad4cd | 2050 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2051 | } |
2052 | ||
24ac23ab TM |
2053 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2054 | { | |
2055 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2056 | |
24ac23ab | 2057 | data->rpc_status = task->tk_status; |
d898528c | 2058 | |
14516c3a TM |
2059 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
2060 | return; | |
d898528c | 2061 | |
24ac23ab | 2062 | if (task->tk_status == 0) { |
807d66d8 TM |
2063 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2064 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2065 | case S_IFREG: |
2066 | break; | |
2067 | case S_IFLNK: | |
24ac23ab | 2068 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2069 | break; |
2070 | case S_IFDIR: | |
24ac23ab | 2071 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2072 | break; |
2073 | default: | |
24ac23ab | 2074 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2075 | } |
6f926b5b | 2076 | } |
26e976a8 | 2077 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2078 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2079 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2080 | } |
3e309914 | 2081 | data->rpc_done = 1; |
24ac23ab | 2082 | } |
6f926b5b | 2083 | |
24ac23ab TM |
2084 | static void nfs4_open_release(void *calldata) |
2085 | { | |
2086 | struct nfs4_opendata *data = calldata; | |
2087 | struct nfs4_state *state = NULL; | |
2088 | ||
2089 | /* If this request hasn't been cancelled, do nothing */ | |
2090 | if (data->cancelled == 0) | |
2091 | goto out_free; | |
2092 | /* In case of error, no cleanup! */ | |
3e309914 | 2093 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2094 | goto out_free; |
2095 | /* In case we need an open_confirm, no cleanup! */ | |
2096 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2097 | goto out_free; | |
24ac23ab | 2098 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2099 | if (!IS_ERR(state)) |
643168c2 | 2100 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2101 | out_free: |
c6d00e63 | 2102 | nfs4_opendata_put(data); |
24ac23ab TM |
2103 | } |
2104 | ||
2105 | static const struct rpc_call_ops nfs4_open_ops = { | |
2106 | .rpc_call_prepare = nfs4_open_prepare, | |
2107 | .rpc_call_done = nfs4_open_done, | |
2108 | .rpc_release = nfs4_open_release, | |
2109 | }; | |
2110 | ||
b257957e | 2111 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 2112 | { |
2b0143b5 | 2113 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2114 | struct nfs_server *server = NFS_SERVER(dir); |
2115 | struct nfs_openargs *o_arg = &data->o_arg; | |
2116 | struct nfs_openres *o_res = &data->o_res; | |
2117 | struct rpc_task *task; | |
5138fde0 TM |
2118 | struct rpc_message msg = { |
2119 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2120 | .rpc_argp = o_arg, | |
2121 | .rpc_resp = o_res, | |
2122 | .rpc_cred = data->owner->so_cred, | |
2123 | }; | |
c970aa85 TM |
2124 | struct rpc_task_setup task_setup_data = { |
2125 | .rpc_client = server->client, | |
5138fde0 | 2126 | .rpc_message = &msg, |
c970aa85 TM |
2127 | .callback_ops = &nfs4_open_ops, |
2128 | .callback_data = data, | |
101070ca | 2129 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2130 | .flags = RPC_TASK_ASYNC, |
2131 | }; | |
24ac23ab TM |
2132 | int status; |
2133 | ||
a9c92d6b | 2134 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2135 | kref_get(&data->kref); |
3e309914 TM |
2136 | data->rpc_done = 0; |
2137 | data->rpc_status = 0; | |
2ced46c2 | 2138 | data->cancelled = 0; |
bdeca1b7 TM |
2139 | data->is_recover = 0; |
2140 | if (isrecover) { | |
8fe72bac | 2141 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2142 | data->is_recover = 1; |
2143 | } | |
c970aa85 | 2144 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2145 | if (IS_ERR(task)) |
2146 | return PTR_ERR(task); | |
2147 | status = nfs4_wait_for_completion_rpc_task(task); | |
2148 | if (status != 0) { | |
2149 | data->cancelled = 1; | |
2150 | smp_wmb(); | |
2151 | } else | |
2152 | status = data->rpc_status; | |
2153 | rpc_put_task(task); | |
2154 | ||
2155 | return status; | |
2156 | } | |
2157 | ||
2158 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2159 | { | |
2b0143b5 | 2160 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2161 | struct nfs_openres *o_res = &data->o_res; |
2162 | int status; | |
2163 | ||
2164 | status = nfs4_run_open_task(data, 1); | |
2165 | if (status != 0 || !data->rpc_done) | |
2166 | return status; | |
2167 | ||
6926afd1 TM |
2168 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2169 | ||
b257957e AB |
2170 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2171 | status = _nfs4_proc_open_confirm(data); | |
2172 | if (status != 0) | |
2173 | return status; | |
2174 | } | |
2175 | ||
2176 | return status; | |
2177 | } | |
2178 | ||
f3792d63 TM |
2179 | /* |
2180 | * Additional permission checks in order to distinguish between an | |
2181 | * open for read, and an open for execute. This works around the | |
2182 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2183 | * the same. | |
2184 | * Note that in the non-execute case, we want to turn off permission | |
2185 | * checking if we just created a new file (POSIX open() semantics). | |
2186 | */ | |
6168f62c WAA |
2187 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2188 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2189 | struct nfs4_state *state, fmode_t fmode, |
2190 | int openflags) | |
6168f62c WAA |
2191 | { |
2192 | struct nfs_access_entry cache; | |
2193 | u32 mask; | |
2194 | ||
2195 | /* access call failed or for some reason the server doesn't | |
2196 | * support any access modes -- defer access call until later */ | |
2197 | if (opendata->o_res.access_supported == 0) | |
2198 | return 0; | |
2199 | ||
2200 | mask = 0; | |
f3792d63 TM |
2201 | /* |
2202 | * Use openflags to check for exec, because fmode won't | |
2203 | * always have FMODE_EXEC set when file open for exec. | |
2204 | */ | |
f8d9a897 WAA |
2205 | if (openflags & __FMODE_EXEC) { |
2206 | /* ONLY check for exec rights */ | |
2207 | mask = MAY_EXEC; | |
f3792d63 | 2208 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2209 | mask = MAY_READ; |
6168f62c WAA |
2210 | |
2211 | cache.cred = cred; | |
2212 | cache.jiffies = jiffies; | |
2213 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2214 | nfs_access_add_cache(state->inode, &cache); | |
2215 | ||
bbd3a8ee | 2216 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2217 | return 0; |
2218 | ||
2219 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2220 | nfs4_close_state(state, fmode); | |
998f40b5 | 2221 | return -EACCES; |
6168f62c WAA |
2222 | } |
2223 | ||
b257957e AB |
2224 | /* |
2225 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2226 | */ | |
2227 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2228 | { | |
2b0143b5 | 2229 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2230 | struct nfs_server *server = NFS_SERVER(dir); |
2231 | struct nfs_openargs *o_arg = &data->o_arg; | |
2232 | struct nfs_openres *o_res = &data->o_res; | |
2233 | int status; | |
2234 | ||
2235 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2236 | if (!data->rpc_done) |
2237 | return status; | |
2238 | if (status != 0) { | |
2239 | if (status == -NFS4ERR_BADNAME && | |
2240 | !(o_arg->open_flags & O_CREAT)) | |
2241 | return -ENOENT; | |
24ac23ab | 2242 | return status; |
08ef7bd3 | 2243 | } |
24ac23ab | 2244 | |
6926afd1 TM |
2245 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2246 | ||
5bc2afc2 | 2247 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2248 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2249 | if (o_arg->open_flags & O_EXCL) |
2250 | data->file_created = 1; | |
2251 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2252 | data->file_created = 1; | |
2253 | } | |
0df5dd4a TM |
2254 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2255 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2256 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2257 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2258 | if (status != 0) |
24ac23ab | 2259 | return status; |
1da177e4 LT |
2260 | } |
2261 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2262 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2263 | return 0; |
1da177e4 LT |
2264 | } |
2265 | ||
d83217c1 AA |
2266 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2267 | { | |
2268 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2269 | } | |
2270 | ||
1da177e4 LT |
2271 | /* |
2272 | * OPEN_EXPIRED: | |
2273 | * reclaim state on the server after a network partition. | |
2274 | * Assumes caller holds the appropriate lock | |
2275 | */ | |
539cd03a | 2276 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2277 | { |
e56e0b78 | 2278 | struct nfs4_opendata *opendata; |
864472e9 | 2279 | int ret; |
1da177e4 | 2280 | |
4a1c0893 | 2281 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2282 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2283 | if (IS_ERR(opendata)) |
2284 | return PTR_ERR(opendata); | |
864472e9 | 2285 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2286 | if (ret == -ESTALE) |
3d4ff43d | 2287 | d_drop(ctx->dentry); |
c6d00e63 | 2288 | nfs4_opendata_put(opendata); |
864472e9 | 2289 | return ret; |
1da177e4 LT |
2290 | } |
2291 | ||
a9ed2e25 | 2292 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2293 | { |
539cd03a | 2294 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2295 | struct nfs4_exception exception = { }; |
2296 | int err; | |
2297 | ||
2298 | do { | |
539cd03a | 2299 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2300 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2301 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2302 | continue; | |
a9ed2e25 TM |
2303 | switch (err) { |
2304 | default: | |
2305 | goto out; | |
2306 | case -NFS4ERR_GRACE: | |
2307 | case -NFS4ERR_DELAY: | |
2308 | nfs4_handle_exception(server, err, &exception); | |
2309 | err = 0; | |
2310 | } | |
202b50dc | 2311 | } while (exception.retry); |
a9ed2e25 | 2312 | out: |
202b50dc TM |
2313 | return err; |
2314 | } | |
2315 | ||
1da177e4 LT |
2316 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2317 | { | |
1da177e4 | 2318 | struct nfs_open_context *ctx; |
864472e9 | 2319 | int ret; |
1da177e4 | 2320 | |
864472e9 TM |
2321 | ctx = nfs4_state_find_open_context(state); |
2322 | if (IS_ERR(ctx)) | |
91876b13 | 2323 | return -EAGAIN; |
539cd03a | 2324 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2325 | put_nfs_open_context(ctx); |
2326 | return ret; | |
1da177e4 LT |
2327 | } |
2328 | ||
4dfd4f7a TM |
2329 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2330 | { | |
2331 | nfs_remove_bad_delegation(state->inode); | |
2332 | write_seqlock(&state->seqlock); | |
2333 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2334 | write_sequnlock(&state->seqlock); | |
2335 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2336 | } | |
2337 | ||
2338 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2339 | { | |
2340 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2341 | nfs_finish_clear_delegation_stateid(state); | |
2342 | } | |
2343 | ||
2344 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2345 | { | |
2346 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2347 | nfs40_clear_delegation_stateid(state); | |
2348 | return nfs4_open_expired(sp, state); | |
2349 | } | |
2350 | ||
f062eb6c | 2351 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2352 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2353 | { |
f062eb6c | 2354 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2355 | nfs4_stateid stateid; |
ab7cb0df | 2356 | struct nfs_delegation *delegation; |
0c116cad TM |
2357 | struct rpc_cred *cred; |
2358 | int status; | |
3e60ffdd | 2359 | |
ab7cb0df TM |
2360 | /* Get the delegation credential for use by test/free_stateid */ |
2361 | rcu_read_lock(); | |
2362 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2363 | if (delegation == NULL) { |
ab7cb0df | 2364 | rcu_read_unlock(); |
0c116cad TM |
2365 | return; |
2366 | } | |
2367 | ||
2368 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2369 | cred = get_rpccred(delegation->cred); | |
2370 | rcu_read_unlock(); | |
2371 | status = nfs41_test_stateid(server, &stateid, cred); | |
2372 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2373 | |
3e60ffdd CL |
2374 | if (status != NFS_OK) { |
2375 | /* Free the stateid unless the server explicitly | |
2376 | * informs us the stateid is unrecognized. */ | |
2377 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2378 | nfs41_free_stateid(server, &stateid, cred); |
2379 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2380 | } |
ab7cb0df | 2381 | |
0c116cad | 2382 | put_rpccred(cred); |
3e60ffdd CL |
2383 | } |
2384 | ||
2385 | /** | |
2386 | * nfs41_check_open_stateid - possibly free an open stateid | |
2387 | * | |
2388 | * @state: NFSv4 state for an inode | |
2389 | * | |
2390 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2391 | * Otherwise a negative NFS4ERR value is returned. | |
2392 | */ | |
2393 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2394 | { | |
2395 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2396 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2397 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2398 | int status; |
2399 | ||
2400 | /* If a state reset has been done, test_stateid is unneeded */ | |
2401 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2402 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2403 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2404 | return -NFS4ERR_BAD_STATEID; | |
2405 | ||
ab7cb0df | 2406 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2407 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2408 | if (status != NFS_OK) { |
2409 | /* Free the stateid unless the server explicitly | |
2410 | * informs us the stateid is unrecognized. */ | |
2411 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2412 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2413 | |
2414 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2415 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2416 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2417 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2418 | } |
2419 | return status; | |
2420 | } | |
2421 | ||
2422 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2423 | { | |
eb64cf96 | 2424 | int status; |
b01dd1d8 | 2425 | |
0c116cad | 2426 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2427 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2428 | if (status != NFS_OK) |
2429 | status = nfs4_open_expired(sp, state); | |
2430 | return status; | |
f062eb6c BS |
2431 | } |
2432 | #endif | |
2433 | ||
aa53ed54 JL |
2434 | /* |
2435 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2436 | * fields corresponding to attributes that were used to store the verifier. | |
2437 | * Make sure we clobber those fields in the later setattr call | |
2438 | */ | |
5334c5bd KM |
2439 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2440 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2441 | { |
5334c5bd KM |
2442 | const u32 *attrset = opendata->o_res.attrset; |
2443 | ||
2444 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2445 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2446 | sattr->ia_valid |= ATTR_ATIME; | |
2447 | ||
5334c5bd | 2448 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2449 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2450 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2451 | |
2452 | /* Except MODE, it seems harmless of setting twice. */ | |
2453 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2454 | sattr->ia_valid &= ~ATTR_MODE; | |
2455 | ||
2456 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2457 | *label = NULL; | |
aa53ed54 JL |
2458 | } |
2459 | ||
c21443c2 TM |
2460 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2461 | fmode_t fmode, | |
2462 | int flags, | |
3efb9722 | 2463 | struct nfs_open_context *ctx) |
c21443c2 TM |
2464 | { |
2465 | struct nfs4_state_owner *sp = opendata->owner; | |
2466 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2467 | struct dentry *dentry; |
c21443c2 TM |
2468 | struct nfs4_state *state; |
2469 | unsigned int seq; | |
2470 | int ret; | |
2471 | ||
2472 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2473 | ||
2474 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2475 | if (ret != 0) |
c21443c2 TM |
2476 | goto out; |
2477 | ||
2478 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2479 | ret = PTR_ERR(state); | |
2480 | if (IS_ERR(state)) | |
2481 | goto out; | |
2482 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2483 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2484 | ||
275bb307 | 2485 | dentry = opendata->dentry; |
2b0143b5 | 2486 | if (d_really_is_negative(dentry)) { |
668d0cd5 | 2487 | struct dentry *alias; |
275bb307 | 2488 | d_drop(dentry); |
668d0cd5 AV |
2489 | alias = d_exact_alias(dentry, state->inode); |
2490 | if (!alias) | |
2491 | alias = d_splice_alias(igrab(state->inode), dentry); | |
2492 | /* d_splice_alias() can't fail here - it's a non-directory */ | |
2493 | if (alias) { | |
275bb307 | 2494 | dput(ctx->dentry); |
668d0cd5 | 2495 | ctx->dentry = dentry = alias; |
275bb307 TM |
2496 | } |
2497 | nfs_set_verifier(dentry, | |
2b0143b5 | 2498 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2499 | } |
2500 | ||
c21443c2 TM |
2501 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2502 | if (ret != 0) | |
2503 | goto out; | |
2504 | ||
3efb9722 | 2505 | ctx->state = state; |
2b0143b5 | 2506 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2507 | nfs_inode_attach_open_context(ctx); |
2508 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2509 | nfs4_schedule_stateid_recovery(server, state); | |
2510 | } | |
c21443c2 TM |
2511 | out: |
2512 | return ret; | |
2513 | } | |
2514 | ||
1da177e4 | 2515 | /* |
24ac23ab | 2516 | * Returns a referenced nfs4_state |
1da177e4 | 2517 | */ |
82be417a | 2518 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2519 | struct nfs_open_context *ctx, |
82be417a AA |
2520 | int flags, |
2521 | struct iattr *sattr, | |
5bc2afc2 TM |
2522 | struct nfs4_label *label, |
2523 | int *opened) | |
1da177e4 LT |
2524 | { |
2525 | struct nfs4_state_owner *sp; | |
2526 | struct nfs4_state *state = NULL; | |
2527 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2528 | struct nfs4_opendata *opendata; |
4197a055 TM |
2529 | struct dentry *dentry = ctx->dentry; |
2530 | struct rpc_cred *cred = ctx->cred; | |
2531 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2532 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2533 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2534 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2535 | int status; |
1da177e4 LT |
2536 | |
2537 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2538 | status = -ENOMEM; |
d1e284d5 TM |
2539 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2540 | if (sp == NULL) { | |
1da177e4 LT |
2541 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2542 | goto out_err; | |
2543 | } | |
58d9714a TM |
2544 | status = nfs4_recover_expired_lease(server); |
2545 | if (status != 0) | |
b4454fe1 | 2546 | goto err_put_state_owner; |
2b0143b5 DH |
2547 | if (d_really_is_positive(dentry)) |
2548 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2549 | status = -ENOMEM; |
2b0143b5 | 2550 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2551 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2552 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2553 | label, claim, GFP_KERNEL); |
e56e0b78 | 2554 | if (opendata == NULL) |
95d35cb4 | 2555 | goto err_put_state_owner; |
1da177e4 | 2556 | |
14c43f76 DQ |
2557 | if (label) { |
2558 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2559 | if (IS_ERR(olabel)) { | |
2560 | status = PTR_ERR(olabel); | |
2561 | goto err_opendata_put; | |
2562 | } | |
2563 | } | |
2564 | ||
e911b815 TM |
2565 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2566 | if (!opendata->f_attr.mdsthreshold) { | |
2567 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2568 | if (!opendata->f_attr.mdsthreshold) | |
2569 | goto err_free_label; | |
2570 | } | |
1549210f | 2571 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2572 | } |
2b0143b5 DH |
2573 | if (d_really_is_positive(dentry)) |
2574 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2575 | |
3efb9722 | 2576 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2577 | if (status != 0) |
14c43f76 | 2578 | goto err_free_label; |
3efb9722 | 2579 | state = ctx->state; |
6168f62c | 2580 | |
efcbc04e | 2581 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2582 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2583 | nfs4_exclusive_attrset(opendata, sattr, &label); |
a1d1c4f1 TM |
2584 | /* |
2585 | * send create attributes which was not set by open | |
2586 | * with an extra setattr. | |
2587 | */ | |
2588 | if (sattr->ia_valid & NFS4_VALID_ATTRS) { | |
2589 | nfs_fattr_init(opendata->o_res.f_attr); | |
2590 | status = nfs4_do_setattr(state->inode, cred, | |
2591 | opendata->o_res.f_attr, sattr, | |
2592 | state, label, olabel); | |
2593 | if (status == 0) { | |
2594 | nfs_setattr_update_inode(state->inode, sattr, | |
2595 | opendata->o_res.f_attr); | |
2596 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); | |
2597 | } | |
1775fd3e | 2598 | } |
0ab64e0e | 2599 | } |
c5c3fb5f | 2600 | if (opened && opendata->file_created) |
5bc2afc2 | 2601 | *opened |= FILE_CREATED; |
82be417a | 2602 | |
e911b815 | 2603 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2604 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2605 | opendata->f_attr.mdsthreshold = NULL; |
2606 | } | |
82be417a | 2607 | |
14c43f76 DQ |
2608 | nfs4_label_free(olabel); |
2609 | ||
c6d00e63 | 2610 | nfs4_opendata_put(opendata); |
1da177e4 | 2611 | nfs4_put_state_owner(sp); |
1da177e4 | 2612 | return 0; |
14c43f76 DQ |
2613 | err_free_label: |
2614 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2615 | err_opendata_put: |
2616 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2617 | err_put_state_owner: |
2618 | nfs4_put_state_owner(sp); | |
1da177e4 | 2619 | out_err: |
1da177e4 LT |
2620 | return status; |
2621 | } | |
2622 | ||
2623 | ||
82be417a | 2624 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2625 | struct nfs_open_context *ctx, |
82be417a AA |
2626 | int flags, |
2627 | struct iattr *sattr, | |
5bc2afc2 TM |
2628 | struct nfs4_label *label, |
2629 | int *opened) | |
1da177e4 | 2630 | { |
49f9a0fa | 2631 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2632 | struct nfs4_exception exception = { }; |
2633 | struct nfs4_state *res; | |
2634 | int status; | |
2635 | ||
2636 | do { | |
5bc2afc2 | 2637 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2638 | res = ctx->state; |
42113a75 | 2639 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2640 | if (status == 0) |
2641 | break; | |
2642 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2643 | * book-keeping w.r.t. state-changing operations | |
2644 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2645 | * It is actually a sign of a bug on the client or on the server. | |
2646 | * | |
2647 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2648 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2649 | * have unhashed the old state_owner for us, and that we can |
2650 | * therefore safely retry using a new one. We should still warn | |
2651 | * the user though... | |
2652 | */ | |
2653 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2654 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2655 | " returned a bad sequence-id error!\n", |
2656 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2657 | exception.retry = 1; |
2658 | continue; | |
2659 | } | |
550f5747 TM |
2660 | /* |
2661 | * BAD_STATEID on OPEN means that the server cancelled our | |
2662 | * state before it received the OPEN_CONFIRM. | |
2663 | * Recover by retrying the request as per the discussion | |
2664 | * on Page 181 of RFC3530. | |
2665 | */ | |
2666 | if (status == -NFS4ERR_BAD_STATEID) { | |
2667 | exception.retry = 1; | |
2668 | continue; | |
2669 | } | |
aac00a8d TM |
2670 | if (status == -EAGAIN) { |
2671 | /* We must have found a delegation */ | |
2672 | exception.retry = 1; | |
2673 | continue; | |
2674 | } | |
49f9a0fa TM |
2675 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2676 | continue; | |
2677 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2678 | status, &exception)); |
2679 | } while (exception.retry); | |
2680 | return res; | |
2681 | } | |
2682 | ||
8487c479 TM |
2683 | static int _nfs4_do_setattr(struct inode *inode, |
2684 | struct nfs_setattrargs *arg, | |
2685 | struct nfs_setattrres *res, | |
2686 | struct rpc_cred *cred, | |
2687 | struct nfs4_state *state) | |
1da177e4 | 2688 | { |
3e4f6290 | 2689 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2690 | struct rpc_message msg = { |
659bfcd6 | 2691 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
8487c479 TM |
2692 | .rpc_argp = arg, |
2693 | .rpc_resp = res, | |
659bfcd6 | 2694 | .rpc_cred = cred, |
1da177e4 | 2695 | }; |
abf4e13c | 2696 | struct rpc_cred *delegation_cred = NULL; |
26e976a8 | 2697 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2698 | fmode_t fmode; |
2699 | bool truncate; | |
65e4308d | 2700 | int status; |
1da177e4 | 2701 | |
8487c479 | 2702 | nfs_fattr_init(res->fattr); |
1da177e4 | 2703 | |
ee3ae84e | 2704 | /* Servers should only apply open mode checks for file size changes */ |
8487c479 | 2705 | truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false; |
ee3ae84e TM |
2706 | fmode = truncate ? FMODE_WRITE : FMODE_READ; |
2707 | ||
8487c479 | 2708 | if (nfs4_copy_delegation_stateid(inode, fmode, &arg->stateid, &delegation_cred)) { |
ee3ae84e | 2709 | /* Use that stateid */ |
0418dae1 | 2710 | } else if (truncate && state != NULL) { |
2a369153 TM |
2711 | struct nfs_lockowner lockowner = { |
2712 | .l_owner = current->files, | |
2713 | .l_pid = current->tgid, | |
2714 | }; | |
0418dae1 TM |
2715 | if (!nfs4_valid_open_stateid(state)) |
2716 | return -EBADF; | |
abf4e13c | 2717 | if (nfs4_select_rw_stateid(state, FMODE_WRITE, &lockowner, |
8487c479 | 2718 | &arg->stateid, &delegation_cred) == -EIO) |
0418dae1 | 2719 | return -EBADF; |
08e9eac4 | 2720 | } else |
8487c479 | 2721 | nfs4_stateid_copy(&arg->stateid, &zero_stateid); |
abf4e13c TM |
2722 | if (delegation_cred) |
2723 | msg.rpc_cred = delegation_cred; | |
1da177e4 | 2724 | |
8487c479 | 2725 | status = nfs4_call_sync(server->client, server, &msg, &arg->seq_args, &res->seq_res, 1); |
abf4e13c TM |
2726 | |
2727 | put_rpccred(delegation_cred); | |
26e976a8 TM |
2728 | if (status == 0 && state != NULL) |
2729 | renew_lease(server, timestamp); | |
8487c479 | 2730 | trace_nfs4_setattr(inode, &arg->stateid, status); |
65e4308d | 2731 | return status; |
1da177e4 LT |
2732 | } |
2733 | ||
659bfcd6 TM |
2734 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2735 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2736 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2737 | struct nfs4_label *olabel) | |
1da177e4 | 2738 | { |
3e4f6290 | 2739 | struct nfs_server *server = NFS_SERVER(inode); |
8487c479 TM |
2740 | struct nfs_setattrargs arg = { |
2741 | .fh = NFS_FH(inode), | |
2742 | .iap = sattr, | |
2743 | .server = server, | |
2744 | .bitmask = server->attr_bitmask, | |
2745 | .label = ilabel, | |
2746 | }; | |
2747 | struct nfs_setattrres res = { | |
2748 | .fattr = fattr, | |
2749 | .label = olabel, | |
2750 | .server = server, | |
2751 | }; | |
a1d0b5ee TM |
2752 | struct nfs4_exception exception = { |
2753 | .state = state, | |
3114ea7a | 2754 | .inode = inode, |
8487c479 | 2755 | .stateid = &arg.stateid, |
a1d0b5ee | 2756 | }; |
1da177e4 | 2757 | int err; |
8487c479 TM |
2758 | |
2759 | arg.bitmask = nfs4_bitmask(server, ilabel); | |
2760 | if (ilabel) | |
2761 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2762 | ||
1da177e4 | 2763 | do { |
8487c479 | 2764 | err = _nfs4_do_setattr(inode, &arg, &res, cred, state); |
451146be TM |
2765 | switch (err) { |
2766 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2767 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2768 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2769 | "applying open mode checks to " | |
2770 | "a SETATTR that is not " | |
2771 | "changing file size.\n", | |
2772 | server->nfs_client->cl_hostname); | |
2773 | } | |
451146be TM |
2774 | if (state && !(state->state & FMODE_WRITE)) { |
2775 | err = -EBADF; | |
2776 | if (sattr->ia_valid & ATTR_OPEN) | |
2777 | err = -EACCES; | |
2778 | goto out; | |
2779 | } | |
2780 | } | |
2781 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2782 | } while (exception.retry); |
451146be | 2783 | out: |
1da177e4 LT |
2784 | return err; |
2785 | } | |
2786 | ||
500d701f PT |
2787 | static bool |
2788 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
2789 | { | |
2790 | if (inode == NULL || !nfs_have_layout(inode)) | |
2791 | return false; | |
2792 | ||
2793 | return pnfs_wait_on_layoutreturn(inode, task); | |
2794 | } | |
2795 | ||
1da177e4 LT |
2796 | struct nfs4_closedata { |
2797 | struct inode *inode; | |
2798 | struct nfs4_state *state; | |
2799 | struct nfs_closeargs arg; | |
2800 | struct nfs_closeres res; | |
516a6af6 | 2801 | struct nfs_fattr fattr; |
26e976a8 | 2802 | unsigned long timestamp; |
f7e8917a FI |
2803 | bool roc; |
2804 | u32 roc_barrier; | |
1da177e4 LT |
2805 | }; |
2806 | ||
963d8fe5 | 2807 | static void nfs4_free_closedata(void *data) |
9512135d | 2808 | { |
963d8fe5 TM |
2809 | struct nfs4_closedata *calldata = data; |
2810 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2811 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2812 | |
f7e8917a FI |
2813 | if (calldata->roc) |
2814 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2815 | nfs4_put_open_state(calldata->state); |
2816 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2817 | nfs4_put_state_owner(sp); |
322b2b90 | 2818 | nfs_sb_deactive(sb); |
9512135d TM |
2819 | kfree(calldata); |
2820 | } | |
2821 | ||
963d8fe5 | 2822 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2823 | { |
963d8fe5 | 2824 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2825 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2826 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2827 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2828 | |
a3ca5651 | 2829 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2830 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2831 | return; | |
42113a75 | 2832 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2833 | /* hmm. we are done with the inode, and in the process of freeing |
2834 | * the state_owner. we keep this around to process errors | |
2835 | */ | |
1da177e4 LT |
2836 | switch (task->tk_status) { |
2837 | case 0: | |
412f6c4c | 2838 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2839 | if (calldata->roc) |
f7e8917a FI |
2840 | pnfs_roc_set_barrier(state->inode, |
2841 | calldata->roc_barrier); | |
26e976a8 | 2842 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2843 | break; |
69794ad7 | 2844 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2845 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2846 | case -NFS4ERR_OLD_STATEID: |
2847 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2848 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2849 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2850 | &state->open_stateid)) { |
566fcec6 TM |
2851 | rpc_restart_call_prepare(task); |
2852 | goto out_release; | |
2853 | } | |
dc0b027d | 2854 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2855 | break; |
1da177e4 | 2856 | default: |
8478eaa1 | 2857 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2858 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2859 | goto out_release; |
2860 | } | |
1da177e4 | 2861 | } |
4a1e2feb TM |
2862 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
2863 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 2864 | out_release: |
72211dbe | 2865 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2866 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2867 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2868 | } |
2869 | ||
4ce70ada | 2870 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2871 | { |
4ce70ada | 2872 | struct nfs4_closedata *calldata = data; |
9512135d | 2873 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2874 | struct inode *inode = calldata->inode; |
aee7af35 | 2875 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2876 | int call_close = 0; |
9512135d | 2877 | |
a3ca5651 | 2878 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2879 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2880 | goto out_wait; |
003707c7 | 2881 | |
88069f77 | 2882 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2883 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2884 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2885 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2886 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2887 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2888 | /* Calculate the change in open mode */ |
cd9288ff | 2889 | calldata->arg.fmode = 0; |
e7616923 | 2890 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2891 | if (state->n_rdonly == 0) |
2892 | call_close |= is_rdonly; | |
2893 | else if (is_rdonly) | |
2894 | calldata->arg.fmode |= FMODE_READ; | |
2895 | if (state->n_wronly == 0) | |
2896 | call_close |= is_wronly; | |
2897 | else if (is_wronly) | |
2898 | calldata->arg.fmode |= FMODE_WRITE; | |
e547f262 TM |
2899 | if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE)) |
2900 | call_close |= is_rdwr; | |
cd9288ff TM |
2901 | } else if (is_rdwr) |
2902 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2903 | ||
5d422301 TM |
2904 | if (!nfs4_valid_open_stateid(state)) |
2905 | call_close = 0; | |
4cecb76f | 2906 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2907 | |
2908 | if (!call_close) { | |
963d8fe5 | 2909 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2910 | goto out_no_action; |
9512135d | 2911 | } |
88069f77 | 2912 | |
500d701f PT |
2913 | if (nfs4_wait_on_layoutreturn(inode, task)) { |
2914 | nfs_release_seqid(calldata->arg.seqid); | |
2915 | goto out_wait; | |
2916 | } | |
2917 | ||
3c13cb5b | 2918 | if (calldata->arg.fmode == 0) |
88069f77 | 2919 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2920 | if (calldata->roc) |
2921 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2922 | ||
6ae37339 TM |
2923 | calldata->arg.share_access = |
2924 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2925 | calldata->arg.fmode, 0); | |
88069f77 | 2926 | |
516a6af6 | 2927 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2928 | calldata->timestamp = jiffies; |
7fdab069 | 2929 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2930 | &calldata->arg.seq_args, |
2931 | &calldata->res.seq_res, | |
2240a9e2 TM |
2932 | task) != 0) |
2933 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2934 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2935 | return; |
2936 | out_no_action: | |
2937 | task->tk_action = NULL; | |
2938 | out_wait: | |
2939 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2940 | } |
2941 | ||
963d8fe5 | 2942 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2943 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2944 | .rpc_call_done = nfs4_close_done, |
2945 | .rpc_release = nfs4_free_closedata, | |
2946 | }; | |
2947 | ||
fe08c546 PT |
2948 | static bool nfs4_roc(struct inode *inode) |
2949 | { | |
40dd4b7a | 2950 | if (!nfs_have_layout(inode)) |
fe08c546 | 2951 | return false; |
fe08c546 PT |
2952 | return pnfs_roc(inode); |
2953 | } | |
2954 | ||
1da177e4 LT |
2955 | /* |
2956 | * It is possible for data to be read/written from a mem-mapped file | |
2957 | * after the sys_close call (which hits the vfs layer as a flush). | |
2958 | * This means that we can't safely call nfsv4 close on a file until | |
2959 | * the inode is cleared. This in turn means that we are not good | |
2960 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2961 | * share state even when we are done with one of the three share | |
2962 | * stateid's in the inode. | |
2963 | * | |
2964 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2965 | */ | |
1f7977c1 | 2966 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2967 | { |
4a35bd41 | 2968 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2969 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2970 | struct nfs4_closedata *calldata; |
b39e625b TM |
2971 | struct nfs4_state_owner *sp = state->owner; |
2972 | struct rpc_task *task; | |
5138fde0 TM |
2973 | struct rpc_message msg = { |
2974 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2975 | .rpc_cred = state->owner->so_cred, | |
2976 | }; | |
c970aa85 TM |
2977 | struct rpc_task_setup task_setup_data = { |
2978 | .rpc_client = server->client, | |
5138fde0 | 2979 | .rpc_message = &msg, |
c970aa85 | 2980 | .callback_ops = &nfs4_close_ops, |
101070ca | 2981 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2982 | .flags = RPC_TASK_ASYNC, |
2983 | }; | |
9512135d | 2984 | int status = -ENOMEM; |
1da177e4 | 2985 | |
fa940720 WAA |
2986 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2987 | &task_setup_data.rpc_client, &msg); | |
2988 | ||
8535b2be | 2989 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2990 | if (calldata == NULL) |
9512135d | 2991 | goto out; |
a9c92d6b | 2992 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2993 | calldata->inode = state->inode; |
1da177e4 | 2994 | calldata->state = state; |
4a35bd41 | 2995 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2996 | /* Serialization for the sequence id */ |
63f5f796 TM |
2997 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2998 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2999 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 3000 | goto out_free_calldata; |
dc0b027d | 3001 | calldata->arg.fmode = 0; |
a65318bf | 3002 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 3003 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 3004 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 3005 | calldata->res.server = server; |
fe08c546 | 3006 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 3007 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 3008 | |
1174dd1f TM |
3009 | msg.rpc_argp = &calldata->arg; |
3010 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
3011 | task_setup_data.callback_data = calldata; |
3012 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
3013 | if (IS_ERR(task)) |
3014 | return PTR_ERR(task); | |
a49c3c77 TM |
3015 | status = 0; |
3016 | if (wait) | |
3017 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 3018 | rpc_put_task(task); |
a49c3c77 | 3019 | return status; |
9512135d TM |
3020 | out_free_calldata: |
3021 | kfree(calldata); | |
3022 | out: | |
b39e625b TM |
3023 | nfs4_put_open_state(state); |
3024 | nfs4_put_state_owner(sp); | |
9512135d | 3025 | return status; |
1da177e4 LT |
3026 | } |
3027 | ||
2b484297 | 3028 | static struct inode * |
5bc2afc2 TM |
3029 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
3030 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 3031 | { |
1da177e4 | 3032 | struct nfs4_state *state; |
aa9c2669 DQ |
3033 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
3034 | ||
3035 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 3036 | |
565277f6 | 3037 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 3038 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
3039 | |
3040 | nfs4_label_release_security(label); | |
3041 | ||
f46e0bd3 TM |
3042 | if (IS_ERR(state)) |
3043 | return ERR_CAST(state); | |
275bb307 | 3044 | return state->inode; |
1da177e4 LT |
3045 | } |
3046 | ||
1185a552 | 3047 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3048 | { |
3049 | if (ctx->state == NULL) | |
3050 | return; | |
3051 | if (is_sync) | |
643168c2 | 3052 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 3053 | else |
643168c2 | 3054 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 3055 | } |
1da177e4 | 3056 | |
b944dba3 TM |
3057 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3058 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 3059 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 3060 | |
1da177e4 LT |
3061 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3062 | { | |
8c61282f | 3063 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3064 | struct nfs4_server_caps_arg args = { |
3065 | .fhandle = fhandle, | |
8c61282f | 3066 | .bitmask = bitmask, |
43652ad5 | 3067 | }; |
1da177e4 LT |
3068 | struct nfs4_server_caps_res res = {}; |
3069 | struct rpc_message msg = { | |
3070 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3071 | .rpc_argp = &args, |
1da177e4 LT |
3072 | .rpc_resp = &res, |
3073 | }; | |
3074 | int status; | |
3075 | ||
8c61282f KM |
3076 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3077 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3078 | FATTR4_WORD0_LINK_SUPPORT | | |
3079 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3080 | FATTR4_WORD0_ACLSUPPORT; | |
3081 | if (minorversion) | |
3082 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3083 | ||
7c513058 | 3084 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3085 | if (status == 0) { |
b944dba3 | 3086 | /* Sanity check the server answers */ |
8c61282f | 3087 | switch (minorversion) { |
b944dba3 TM |
3088 | case 0: |
3089 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3090 | res.attr_bitmask[2] = 0; | |
3091 | break; | |
3092 | case 1: | |
3093 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3094 | break; | |
3095 | case 2: | |
3096 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3097 | } | |
1da177e4 | 3098 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
3099 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
3100 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
3101 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
3102 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
3103 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
3104 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
3105 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3106 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3107 | server->caps |= NFS_CAP_ACLS; |
3108 | if (res.has_links != 0) | |
3109 | server->caps |= NFS_CAP_HARDLINKS; | |
3110 | if (res.has_symlinks != 0) | |
3111 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
3112 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
3113 | server->caps |= NFS_CAP_FILEID; | |
3114 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
3115 | server->caps |= NFS_CAP_MODE; | |
3116 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
3117 | server->caps |= NFS_CAP_NLINK; | |
3118 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
3119 | server->caps |= NFS_CAP_OWNER; | |
3120 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
3121 | server->caps |= NFS_CAP_OWNER_GROUP; | |
3122 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
3123 | server->caps |= NFS_CAP_ATIME; | |
3124 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
3125 | server->caps |= NFS_CAP_CTIME; | |
3126 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
3127 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
3128 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3129 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3130 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3131 | #endif | |
3132 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
3133 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3134 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3135 | |
a65318bf TM |
3136 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3137 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3138 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3139 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
3140 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3141 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 3142 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3143 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3144 | } |
cccef3b9 | 3145 | |
1da177e4 LT |
3146 | return status; |
3147 | } | |
3148 | ||
55a97593 | 3149 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
3150 | { |
3151 | struct nfs4_exception exception = { }; | |
3152 | int err; | |
3153 | do { | |
3154 | err = nfs4_handle_exception(server, | |
3155 | _nfs4_server_capabilities(server, fhandle), | |
3156 | &exception); | |
3157 | } while (exception.retry); | |
3158 | return err; | |
3159 | } | |
3160 | ||
3161 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3162 | struct nfs_fsinfo *info) | |
3163 | { | |
aa9c2669 | 3164 | u32 bitmask[3]; |
1da177e4 | 3165 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3166 | .bitmask = bitmask, |
1da177e4 LT |
3167 | }; |
3168 | struct nfs4_lookup_res res = { | |
3169 | .server = server, | |
0e574af1 | 3170 | .fattr = info->fattr, |
1da177e4 LT |
3171 | .fh = fhandle, |
3172 | }; | |
3173 | struct rpc_message msg = { | |
3174 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3175 | .rpc_argp = &args, | |
3176 | .rpc_resp = &res, | |
3177 | }; | |
008f55d0 | 3178 | |
aa9c2669 DQ |
3179 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3180 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3181 | /* | |
3182 | * Process the label in the upcoming getfattr | |
3183 | */ | |
3184 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3185 | ||
0e574af1 | 3186 | nfs_fattr_init(info->fattr); |
7c513058 | 3187 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3188 | } |
3189 | ||
3190 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3191 | struct nfs_fsinfo *info) | |
3192 | { | |
3193 | struct nfs4_exception exception = { }; | |
3194 | int err; | |
3195 | do { | |
fb8a5ba8 | 3196 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3197 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3198 | switch (err) { |
3199 | case 0: | |
3200 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3201 | goto out; |
fb8a5ba8 BS |
3202 | default: |
3203 | err = nfs4_handle_exception(server, err, &exception); | |
3204 | } | |
1da177e4 | 3205 | } while (exception.retry); |
05e9cfb4 | 3206 | out: |
1da177e4 LT |
3207 | return err; |
3208 | } | |
3209 | ||
8f70e95f BS |
3210 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3211 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3212 | { | |
c2190661 TM |
3213 | struct rpc_auth_create_args auth_args = { |
3214 | .pseudoflavor = flavor, | |
3215 | }; | |
8f70e95f BS |
3216 | struct rpc_auth *auth; |
3217 | int ret; | |
3218 | ||
c2190661 | 3219 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3220 | if (IS_ERR(auth)) { |
75bc8821 | 3221 | ret = -EACCES; |
8f70e95f BS |
3222 | goto out; |
3223 | } | |
3224 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3225 | out: |
3226 | return ret; | |
3227 | } | |
3228 | ||
9a744ba3 CL |
3229 | /* |
3230 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3231 | * | |
3232 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3233 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3234 | * | |
3235 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3236 | * negative errno value. | |
3237 | */ | |
801a16dc | 3238 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3239 | struct nfs_fsinfo *info) |
1da177e4 | 3240 | { |
9a744ba3 CL |
3241 | /* Per 3530bis 15.33.5 */ |
3242 | static const rpc_authflavor_t flav_array[] = { | |
3243 | RPC_AUTH_GSS_KRB5P, | |
3244 | RPC_AUTH_GSS_KRB5I, | |
3245 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3246 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3247 | RPC_AUTH_NULL, |
3248 | }; | |
3249 | int status = -EPERM; | |
3250 | size_t i; | |
6a1a1e34 | 3251 | |
4d4b69dd WAA |
3252 | if (server->auth_info.flavor_len > 0) { |
3253 | /* try each flavor specified by user */ | |
3254 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3255 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3256 | server->auth_info.flavors[i]); | |
3257 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3258 | continue; | |
3259 | break; | |
3260 | } | |
3261 | } else { | |
3262 | /* no flavors specified by user, try default list */ | |
3263 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3264 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3265 | flav_array[i]); | |
3266 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3267 | continue; | |
3268 | break; | |
3269 | } | |
8f70e95f | 3270 | } |
9a744ba3 | 3271 | |
fb8a5ba8 BS |
3272 | /* |
3273 | * -EACCESS could mean that the user doesn't have correct permissions | |
3274 | * to access the mount. It could also mean that we tried to mount | |
3275 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3276 | * existing mount programs don't handle -EACCES very well so it should | |
3277 | * be mapped to -EPERM instead. | |
3278 | */ | |
3279 | if (status == -EACCES) | |
3280 | status = -EPERM; | |
801a16dc BS |
3281 | return status; |
3282 | } | |
3283 | ||
2ed4b95b CL |
3284 | /** |
3285 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3286 | * @server: initialized nfs_server handle | |
3287 | * @fhandle: we fill in the pseudo-fs root file handle | |
3288 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3289 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3290 | * |
3291 | * Returns zero on success, or a negative errno. | |
801a16dc | 3292 | */ |
3028eb2b | 3293 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3294 | struct nfs_fsinfo *info, |
3295 | bool auth_probe) | |
801a16dc | 3296 | { |
c7757074 | 3297 | int status = 0; |
2ed4b95b | 3298 | |
c7757074 | 3299 | if (!auth_probe) |
5e6b1990 | 3300 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3301 | |
3302 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
698c937b TM |
3303 | status = server->nfs_client->cl_mvops->find_root_sec(server, |
3304 | fhandle, info); | |
2ed4b95b | 3305 | |
1da177e4 LT |
3306 | if (status == 0) |
3307 | status = nfs4_server_capabilities(server, fhandle); | |
3308 | if (status == 0) | |
3309 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3310 | |
c12e87f4 | 3311 | return nfs4_map_errors(status); |
1da177e4 LT |
3312 | } |
3313 | ||
bae36241 BS |
3314 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3315 | struct nfs_fsinfo *info) | |
3316 | { | |
3317 | int error; | |
3318 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3319 | struct nfs4_label *label = NULL; |
bae36241 BS |
3320 | |
3321 | error = nfs4_server_capabilities(server, mntfh); | |
3322 | if (error < 0) { | |
3323 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3324 | return error; | |
3325 | } | |
3326 | ||
14c43f76 DQ |
3327 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3328 | if (IS_ERR(label)) | |
3329 | return PTR_ERR(label); | |
3330 | ||
1775fd3e | 3331 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3332 | if (error < 0) { |
3333 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3334 | goto err_free_label; |
bae36241 BS |
3335 | } |
3336 | ||
3337 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3338 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3339 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3340 | ||
14c43f76 DQ |
3341 | err_free_label: |
3342 | nfs4_label_free(label); | |
3343 | ||
bae36241 BS |
3344 | return error; |
3345 | } | |
3346 | ||
6b97fd3d MN |
3347 | /* |
3348 | * Get locations and (maybe) other attributes of a referral. | |
3349 | * Note that we'll actually follow the referral later when | |
3350 | * we detect fsid mismatch in inode revalidation | |
3351 | */ | |
f05d147f BS |
3352 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3353 | const struct qstr *name, struct nfs_fattr *fattr, | |
3354 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3355 | { |
3356 | int status = -ENOMEM; | |
3357 | struct page *page = NULL; | |
3358 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3359 | |
3360 | page = alloc_page(GFP_KERNEL); | |
3361 | if (page == NULL) | |
3362 | goto out; | |
3363 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3364 | if (locations == NULL) | |
3365 | goto out; | |
3366 | ||
f05d147f | 3367 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3368 | if (status != 0) |
3369 | goto out; | |
519ae255 CL |
3370 | |
3371 | /* | |
3372 | * If the fsid didn't change, this is a migration event, not a | |
3373 | * referral. Cause us to drop into the exception handler, which | |
3374 | * will kick off migration recovery. | |
3375 | */ | |
6b97fd3d | 3376 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3377 | dprintk("%s: server did not return a different fsid for" |
3378 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3379 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3380 | goto out; |
3381 | } | |
533eb461 AA |
3382 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3383 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3384 | |
533eb461 | 3385 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3386 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3387 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3388 | out: | |
3389 | if (page) | |
3390 | __free_page(page); | |
5d7ca35a | 3391 | kfree(locations); |
6b97fd3d MN |
3392 | return status; |
3393 | } | |
3394 | ||
1775fd3e DQ |
3395 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3396 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3397 | { |
3398 | struct nfs4_getattr_arg args = { | |
3399 | .fh = fhandle, | |
3400 | .bitmask = server->attr_bitmask, | |
3401 | }; | |
3402 | struct nfs4_getattr_res res = { | |
3403 | .fattr = fattr, | |
1775fd3e | 3404 | .label = label, |
1da177e4 LT |
3405 | .server = server, |
3406 | }; | |
3407 | struct rpc_message msg = { | |
3408 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3409 | .rpc_argp = &args, | |
3410 | .rpc_resp = &res, | |
3411 | }; | |
aa9c2669 DQ |
3412 | |
3413 | args.bitmask = nfs4_bitmask(server, label); | |
3414 | ||
0e574af1 | 3415 | nfs_fattr_init(fattr); |
7c513058 | 3416 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3417 | } |
3418 | ||
1775fd3e DQ |
3419 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3420 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3421 | { |
3422 | struct nfs4_exception exception = { }; | |
3423 | int err; | |
3424 | do { | |
b5f875a9 TM |
3425 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3426 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3427 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3428 | &exception); |
3429 | } while (exception.retry); | |
3430 | return err; | |
3431 | } | |
3432 | ||
3433 | /* | |
3434 | * The file is not closed if it is opened due to the a request to change | |
3435 | * the size of the file. The open call will not be needed once the | |
3436 | * VFS layer lookup-intents are implemented. | |
3437 | * | |
3438 | * Close is called when the inode is destroyed. | |
3439 | * If we haven't opened the file for O_WRONLY, we | |
3440 | * need to in the size_change case to obtain a stateid. | |
3441 | * | |
3442 | * Got race? | |
3443 | * Because OPEN is always done by name in nfsv4, it is | |
3444 | * possible that we opened a different file by the same | |
3445 | * name. We can recognize this race condition, but we | |
3446 | * can't do anything about it besides returning an error. | |
3447 | * | |
3448 | * This will be fixed with VFS changes (lookup-intent). | |
3449 | */ | |
3450 | static int | |
3451 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3452 | struct iattr *sattr) | |
3453 | { | |
2b0143b5 | 3454 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3455 | struct rpc_cred *cred = NULL; |
d530838b | 3456 | struct nfs4_state *state = NULL; |
14c43f76 | 3457 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3458 | int status; |
3459 | ||
88ac815c PT |
3460 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3461 | sattr->ia_valid & ATTR_SIZE && | |
3462 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3463 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3464 | |
0e574af1 | 3465 | nfs_fattr_init(fattr); |
1da177e4 | 3466 | |
2669940d AA |
3467 | /* Deal with open(O_TRUNC) */ |
3468 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3469 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3470 | |
3471 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3472 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3473 | return 0; |
3474 | ||
d530838b | 3475 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3476 | if (sattr->ia_valid & ATTR_FILE) { |
3477 | struct nfs_open_context *ctx; | |
3478 | ||
3479 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3480 | if (ctx) { |
3481 | cred = ctx->cred; | |
3482 | state = ctx->state; | |
3483 | } | |
659bfcd6 | 3484 | } |
08e9eac4 | 3485 | |
14c43f76 DQ |
3486 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3487 | if (IS_ERR(label)) | |
3488 | return PTR_ERR(label); | |
3489 | ||
3490 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3491 | if (status == 0) { |
f044636d | 3492 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3493 | nfs_setsecurity(inode, fattr, label); |
3494 | } | |
14c43f76 | 3495 | nfs4_label_free(label); |
1da177e4 LT |
3496 | return status; |
3497 | } | |
3498 | ||
0c2e53f1 TM |
3499 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3500 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3501 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3502 | { |
0c2e53f1 | 3503 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3504 | int status; |
3505 | struct nfs4_lookup_arg args = { | |
3506 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3507 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3508 | .name = name, |
3509 | }; | |
3510 | struct nfs4_lookup_res res = { | |
3511 | .server = server, | |
3512 | .fattr = fattr, | |
aa9c2669 | 3513 | .label = label, |
2b3de441 DH |
3514 | .fh = fhandle, |
3515 | }; | |
3516 | struct rpc_message msg = { | |
3517 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3518 | .rpc_argp = &args, | |
3519 | .rpc_resp = &res, | |
3520 | }; | |
3521 | ||
aa9c2669 DQ |
3522 | args.bitmask = nfs4_bitmask(server, label); |
3523 | ||
2b3de441 DH |
3524 | nfs_fattr_init(fattr); |
3525 | ||
1da177e4 | 3526 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3527 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3528 | dprintk("NFS reply lookup: %d\n", status); |
3529 | return status; | |
3530 | } | |
3531 | ||
72de53ec | 3532 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3533 | { |
7ebb9315 | 3534 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3535 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3536 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3537 | fattr->nlink = 2; | |
3538 | } | |
3539 | ||
72de53ec | 3540 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
beffb8fe | 3541 | const struct qstr *name, struct nfs_fh *fhandle, |
1775fd3e | 3542 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3543 | { |
3544 | struct nfs4_exception exception = { }; | |
72de53ec | 3545 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3546 | int err; |
3547 | do { | |
1775fd3e | 3548 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3549 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3550 | switch (err) { |
08ef7bd3 | 3551 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3552 | err = -ENOENT; |
3553 | goto out; | |
0c2e53f1 | 3554 | case -NFS4ERR_MOVED: |
f05d147f | 3555 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3556 | if (err == -NFS4ERR_MOVED) |
3557 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3558 | goto out; |
0c2e53f1 | 3559 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3560 | err = -EPERM; |
3561 | if (client != *clnt) | |
3562 | goto out; | |
66b06860 | 3563 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3564 | if (IS_ERR(client)) |
3565 | return PTR_ERR(client); | |
3566 | ||
3567 | exception.retry = 1; | |
3568 | break; | |
3569 | default: | |
3570 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3571 | } |
1da177e4 | 3572 | } while (exception.retry); |
72de53ec BS |
3573 | |
3574 | out: | |
3575 | if (err == 0) | |
3576 | *clnt = client; | |
3577 | else if (client != *clnt) | |
3578 | rpc_shutdown_client(client); | |
3579 | ||
1da177e4 LT |
3580 | return err; |
3581 | } | |
3582 | ||
beffb8fe | 3583 | static int nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1775fd3e DQ |
3584 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3585 | struct nfs4_label *label) | |
72de53ec BS |
3586 | { |
3587 | int status; | |
3588 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3589 | ||
1775fd3e | 3590 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3591 | if (client != NFS_CLIENT(dir)) { |
3592 | rpc_shutdown_client(client); | |
3593 | nfs_fixup_secinfo_attributes(fattr); | |
3594 | } | |
3595 | return status; | |
3596 | } | |
3597 | ||
f05d147f | 3598 | struct rpc_clnt * |
beffb8fe | 3599 | nfs4_proc_lookup_mountpoint(struct inode *dir, const struct qstr *name, |
f05d147f BS |
3600 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
3601 | { | |
b72888cb | 3602 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3603 | int status; |
f05d147f | 3604 | |
1775fd3e | 3605 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3606 | if (status < 0) |
f05d147f | 3607 | return ERR_PTR(status); |
b72888cb | 3608 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3609 | } |
3610 | ||
1da177e4 LT |
3611 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3612 | { | |
76b32999 | 3613 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3614 | struct nfs4_accessargs args = { |
3615 | .fh = NFS_FH(inode), | |
a4980e78 | 3616 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3617 | }; |
3618 | struct nfs4_accessres res = { | |
3619 | .server = server, | |
1da177e4 | 3620 | }; |
1da177e4 LT |
3621 | struct rpc_message msg = { |
3622 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3623 | .rpc_argp = &args, | |
3624 | .rpc_resp = &res, | |
3625 | .rpc_cred = entry->cred, | |
3626 | }; | |
3627 | int mode = entry->mask; | |
aa9c2669 | 3628 | int status = 0; |
1da177e4 LT |
3629 | |
3630 | /* | |
3631 | * Determine which access bits we want to ask for... | |
3632 | */ | |
3633 | if (mode & MAY_READ) | |
3634 | args.access |= NFS4_ACCESS_READ; | |
3635 | if (S_ISDIR(inode->i_mode)) { | |
3636 | if (mode & MAY_WRITE) | |
3637 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3638 | if (mode & MAY_EXEC) | |
3639 | args.access |= NFS4_ACCESS_LOOKUP; | |
3640 | } else { | |
3641 | if (mode & MAY_WRITE) | |
3642 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3643 | if (mode & MAY_EXEC) | |
3644 | args.access |= NFS4_ACCESS_EXECUTE; | |
3645 | } | |
c407d41a TM |
3646 | |
3647 | res.fattr = nfs_alloc_fattr(); | |
3648 | if (res.fattr == NULL) | |
3649 | return -ENOMEM; | |
3650 | ||
7c513058 | 3651 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3652 | if (!status) { |
6168f62c | 3653 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3654 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3655 | } |
c407d41a | 3656 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3657 | return status; |
3658 | } | |
3659 | ||
3660 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3661 | { | |
3662 | struct nfs4_exception exception = { }; | |
3663 | int err; | |
3664 | do { | |
c1578b76 TM |
3665 | err = _nfs4_proc_access(inode, entry); |
3666 | trace_nfs4_access(inode, err); | |
3667 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3668 | &exception); |
3669 | } while (exception.retry); | |
3670 | return err; | |
3671 | } | |
3672 | ||
3673 | /* | |
3674 | * TODO: For the time being, we don't try to get any attributes | |
3675 | * along with any of the zero-copy operations READ, READDIR, | |
3676 | * READLINK, WRITE. | |
3677 | * | |
3678 | * In the case of the first three, we want to put the GETATTR | |
3679 | * after the read-type operation -- this is because it is hard | |
3680 | * to predict the length of a GETATTR response in v4, and thus | |
3681 | * align the READ data correctly. This means that the GETATTR | |
3682 | * may end up partially falling into the page cache, and we should | |
3683 | * shift it into the 'tail' of the xdr_buf before processing. | |
3684 | * To do this efficiently, we need to know the total length | |
3685 | * of data received, which doesn't seem to be available outside | |
3686 | * of the RPC layer. | |
3687 | * | |
3688 | * In the case of WRITE, we also want to put the GETATTR after | |
3689 | * the operation -- in this case because we want to make sure | |
140150db | 3690 | * we get the post-operation mtime and size. |
1da177e4 LT |
3691 | * |
3692 | * Both of these changes to the XDR layer would in fact be quite | |
3693 | * minor, but I decided to leave them for a subsequent patch. | |
3694 | */ | |
3695 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3696 | unsigned int pgbase, unsigned int pglen) | |
3697 | { | |
3698 | struct nfs4_readlink args = { | |
3699 | .fh = NFS_FH(inode), | |
3700 | .pgbase = pgbase, | |
3701 | .pglen = pglen, | |
3702 | .pages = &page, | |
3703 | }; | |
f50c7000 | 3704 | struct nfs4_readlink_res res; |
1da177e4 LT |
3705 | struct rpc_message msg = { |
3706 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3707 | .rpc_argp = &args, | |
f50c7000 | 3708 | .rpc_resp = &res, |
1da177e4 LT |
3709 | }; |
3710 | ||
7c513058 | 3711 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3712 | } |
3713 | ||
3714 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3715 | unsigned int pgbase, unsigned int pglen) | |
3716 | { | |
3717 | struct nfs4_exception exception = { }; | |
3718 | int err; | |
3719 | do { | |
c1578b76 TM |
3720 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3721 | trace_nfs4_readlink(inode, err); | |
3722 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3723 | &exception); |
3724 | } while (exception.retry); | |
3725 | return err; | |
3726 | } | |
3727 | ||
1da177e4 | 3728 | /* |
8867fe58 | 3729 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3730 | */ |
1da177e4 LT |
3731 | static int |
3732 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3733 | int flags) |
1da177e4 | 3734 | { |
aa9c2669 | 3735 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3736 | struct nfs_open_context *ctx; |
1da177e4 | 3737 | struct nfs4_state *state; |
1da177e4 LT |
3738 | int status = 0; |
3739 | ||
8867fe58 MS |
3740 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3741 | if (IS_ERR(ctx)) | |
3742 | return PTR_ERR(ctx); | |
3743 | ||
aa9c2669 DQ |
3744 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3745 | ||
a8a5da99 | 3746 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3747 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3748 | if (IS_ERR(state)) { |
3749 | status = PTR_ERR(state); | |
c0204fd2 | 3750 | goto out; |
1da177e4 | 3751 | } |
1da177e4 | 3752 | out: |
aa9c2669 | 3753 | nfs4_label_release_security(ilabel); |
8867fe58 | 3754 | put_nfs_open_context(ctx); |
1da177e4 LT |
3755 | return status; |
3756 | } | |
3757 | ||
beffb8fe | 3758 | static int _nfs4_proc_remove(struct inode *dir, const struct qstr *name) |
1da177e4 | 3759 | { |
16e42959 | 3760 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3761 | struct nfs_removeargs args = { |
1da177e4 | 3762 | .fh = NFS_FH(dir), |
26fe5750 | 3763 | .name = *name, |
16e42959 | 3764 | }; |
4fdc17b2 | 3765 | struct nfs_removeres res = { |
16e42959 | 3766 | .server = server, |
1da177e4 | 3767 | }; |
1da177e4 | 3768 | struct rpc_message msg = { |
4fdc17b2 TM |
3769 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3770 | .rpc_argp = &args, | |
3771 | .rpc_resp = &res, | |
1da177e4 | 3772 | }; |
778d2817 | 3773 | int status; |
1da177e4 | 3774 | |
7c513058 | 3775 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3776 | if (status == 0) |
16e42959 | 3777 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3778 | return status; |
3779 | } | |
3780 | ||
beffb8fe | 3781 | static int nfs4_proc_remove(struct inode *dir, const struct qstr *name) |
1da177e4 LT |
3782 | { |
3783 | struct nfs4_exception exception = { }; | |
3784 | int err; | |
3785 | do { | |
078ea3df TM |
3786 | err = _nfs4_proc_remove(dir, name); |
3787 | trace_nfs4_remove(dir, name, err); | |
3788 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3789 | &exception); |
3790 | } while (exception.retry); | |
3791 | return err; | |
3792 | } | |
3793 | ||
e4eff1a6 | 3794 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3795 | { |
e4eff1a6 TM |
3796 | struct nfs_server *server = NFS_SERVER(dir); |
3797 | struct nfs_removeargs *args = msg->rpc_argp; | |
3798 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3799 | |
e4eff1a6 | 3800 | res->server = server; |
1da177e4 | 3801 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3802 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3803 | |
3804 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3805 | } |
3806 | ||
34e137cc BS |
3807 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3808 | { | |
884be175 | 3809 | nfs4_setup_sequence(NFS_SB(data->dentry->d_sb), |
d9afbd1b TM |
3810 | &data->args.seq_args, |
3811 | &data->res.seq_res, | |
3812 | task); | |
1da177e4 LT |
3813 | } |
3814 | ||
e4eff1a6 | 3815 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3816 | { |
078ea3df TM |
3817 | struct nfs_unlinkdata *data = task->tk_calldata; |
3818 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3819 | |
14516c3a TM |
3820 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3821 | return 0; | |
8478eaa1 N |
3822 | if (nfs4_async_handle_error(task, res->server, NULL, |
3823 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3824 | return 0; |
3825 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3826 | return 1; |
1da177e4 LT |
3827 | } |
3828 | ||
d3d4152a JL |
3829 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3830 | { | |
3831 | struct nfs_server *server = NFS_SERVER(dir); | |
3832 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3833 | struct nfs_renameres *res = msg->rpc_resp; | |
3834 | ||
3835 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3836 | res->server = server; |
a9c92d6b | 3837 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3838 | } |
3839 | ||
c6bfa1a1 BS |
3840 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3841 | { | |
d9afbd1b TM |
3842 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3843 | &data->args.seq_args, | |
3844 | &data->res.seq_res, | |
3845 | task); | |
d3d4152a JL |
3846 | } |
3847 | ||
3848 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3849 | struct inode *new_dir) | |
3850 | { | |
fbc6f7c2 TM |
3851 | struct nfs_renamedata *data = task->tk_calldata; |
3852 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3853 | |
3854 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3855 | return 0; | |
8478eaa1 | 3856 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3857 | return 0; |
3858 | ||
3859 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3860 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3861 | return 1; |
3862 | } | |
3863 | ||
beffb8fe | 3864 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 | 3865 | { |
91ba2eee | 3866 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3867 | struct nfs4_link_arg arg = { |
3868 | .fh = NFS_FH(inode), | |
3869 | .dir_fh = NFS_FH(dir), | |
3870 | .name = name, | |
91ba2eee TM |
3871 | .bitmask = server->attr_bitmask, |
3872 | }; | |
91ba2eee TM |
3873 | struct nfs4_link_res res = { |
3874 | .server = server, | |
1775fd3e | 3875 | .label = NULL, |
1da177e4 | 3876 | }; |
1da177e4 LT |
3877 | struct rpc_message msg = { |
3878 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3879 | .rpc_argp = &arg, | |
91ba2eee | 3880 | .rpc_resp = &res, |
1da177e4 | 3881 | }; |
136f2627 TM |
3882 | int status = -ENOMEM; |
3883 | ||
3884 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3885 | if (res.fattr == NULL) |
136f2627 | 3886 | goto out; |
1da177e4 | 3887 | |
14c43f76 DQ |
3888 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3889 | if (IS_ERR(res.label)) { | |
3890 | status = PTR_ERR(res.label); | |
3891 | goto out; | |
3892 | } | |
aa9c2669 | 3893 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3894 | |
7c513058 | 3895 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3896 | if (!status) { |
3897 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3898 | status = nfs_post_op_update_inode(inode, res.fattr); |
3899 | if (!status) | |
3900 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3901 | } |
14c43f76 DQ |
3902 | |
3903 | ||
3904 | nfs4_label_free(res.label); | |
3905 | ||
136f2627 | 3906 | out: |
136f2627 | 3907 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3908 | return status; |
3909 | } | |
3910 | ||
beffb8fe | 3911 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 LT |
3912 | { |
3913 | struct nfs4_exception exception = { }; | |
3914 | int err; | |
3915 | do { | |
3916 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3917 | _nfs4_proc_link(inode, dir, name), | |
3918 | &exception); | |
3919 | } while (exception.retry); | |
3920 | return err; | |
3921 | } | |
3922 | ||
57dc9a57 TM |
3923 | struct nfs4_createdata { |
3924 | struct rpc_message msg; | |
3925 | struct nfs4_create_arg arg; | |
3926 | struct nfs4_create_res res; | |
3927 | struct nfs_fh fh; | |
3928 | struct nfs_fattr fattr; | |
1775fd3e | 3929 | struct nfs4_label *label; |
57dc9a57 TM |
3930 | }; |
3931 | ||
3932 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
beffb8fe | 3933 | const struct qstr *name, struct iattr *sattr, u32 ftype) |
57dc9a57 TM |
3934 | { |
3935 | struct nfs4_createdata *data; | |
3936 | ||
3937 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3938 | if (data != NULL) { | |
3939 | struct nfs_server *server = NFS_SERVER(dir); | |
3940 | ||
14c43f76 DQ |
3941 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3942 | if (IS_ERR(data->label)) | |
3943 | goto out_free; | |
3944 | ||
57dc9a57 TM |
3945 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3946 | data->msg.rpc_argp = &data->arg; | |
3947 | data->msg.rpc_resp = &data->res; | |
3948 | data->arg.dir_fh = NFS_FH(dir); | |
3949 | data->arg.server = server; | |
3950 | data->arg.name = name; | |
3951 | data->arg.attrs = sattr; | |
3952 | data->arg.ftype = ftype; | |
aa9c2669 | 3953 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3954 | data->res.server = server; |
3955 | data->res.fh = &data->fh; | |
3956 | data->res.fattr = &data->fattr; | |
1775fd3e | 3957 | data->res.label = data->label; |
57dc9a57 | 3958 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3959 | } |
3960 | return data; | |
14c43f76 DQ |
3961 | out_free: |
3962 | kfree(data); | |
3963 | return NULL; | |
57dc9a57 TM |
3964 | } |
3965 | ||
3966 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3967 | { | |
7c513058 | 3968 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3969 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3970 | if (status == 0) { |
3971 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3972 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3973 | } |
3974 | return status; | |
3975 | } | |
3976 | ||
3977 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3978 | { | |
14c43f76 | 3979 | nfs4_label_free(data->label); |
57dc9a57 TM |
3980 | kfree(data); |
3981 | } | |
3982 | ||
4f390c15 | 3983 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3984 | struct page *page, unsigned int len, struct iattr *sattr, |
3985 | struct nfs4_label *label) | |
1da177e4 | 3986 | { |
57dc9a57 TM |
3987 | struct nfs4_createdata *data; |
3988 | int status = -ENAMETOOLONG; | |
1da177e4 | 3989 | |
94a6d753 | 3990 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3991 | goto out; |
4f390c15 | 3992 | |
57dc9a57 TM |
3993 | status = -ENOMEM; |
3994 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3995 | if (data == NULL) | |
3996 | goto out; | |
3997 | ||
3998 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3999 | data->arg.u.symlink.pages = &page; | |
4000 | data->arg.u.symlink.len = len; | |
1775fd3e | 4001 | data->arg.label = label; |
1da177e4 | 4002 | |
57dc9a57 TM |
4003 | status = nfs4_do_create(dir, dentry, data); |
4004 | ||
4005 | nfs4_free_createdata(data); | |
4006 | out: | |
1da177e4 LT |
4007 | return status; |
4008 | } | |
4009 | ||
4f390c15 | 4010 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 4011 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
4012 | { |
4013 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4014 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4015 | int err; |
aa9c2669 DQ |
4016 | |
4017 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
4018 | ||
1da177e4 | 4019 | do { |
078ea3df TM |
4020 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
4021 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
4022 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4023 | &exception); |
4024 | } while (exception.retry); | |
aa9c2669 DQ |
4025 | |
4026 | nfs4_label_release_security(label); | |
1da177e4 LT |
4027 | return err; |
4028 | } | |
4029 | ||
4030 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 4031 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 4032 | { |
57dc9a57 TM |
4033 | struct nfs4_createdata *data; |
4034 | int status = -ENOMEM; | |
1da177e4 | 4035 | |
57dc9a57 TM |
4036 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
4037 | if (data == NULL) | |
4038 | goto out; | |
4039 | ||
1775fd3e | 4040 | data->arg.label = label; |
57dc9a57 TM |
4041 | status = nfs4_do_create(dir, dentry, data); |
4042 | ||
4043 | nfs4_free_createdata(data); | |
4044 | out: | |
1da177e4 LT |
4045 | return status; |
4046 | } | |
4047 | ||
4048 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
4049 | struct iattr *sattr) | |
4050 | { | |
4051 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4052 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4053 | int err; |
a8a5da99 | 4054 | |
aa9c2669 DQ |
4055 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4056 | ||
a8a5da99 | 4057 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4058 | do { |
078ea3df TM |
4059 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
4060 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
4061 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4062 | &exception); |
4063 | } while (exception.retry); | |
aa9c2669 DQ |
4064 | nfs4_label_release_security(label); |
4065 | ||
1da177e4 LT |
4066 | return err; |
4067 | } | |
4068 | ||
4069 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4070 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 4071 | { |
2b0143b5 | 4072 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
4073 | struct nfs4_readdir_arg args = { |
4074 | .fh = NFS_FH(dir), | |
56e4ebf8 | 4075 | .pages = pages, |
1da177e4 LT |
4076 | .pgbase = 0, |
4077 | .count = count, | |
2b0143b5 | 4078 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 4079 | .plus = plus, |
1da177e4 LT |
4080 | }; |
4081 | struct nfs4_readdir_res res; | |
4082 | struct rpc_message msg = { | |
4083 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
4084 | .rpc_argp = &args, | |
4085 | .rpc_resp = &res, | |
4086 | .rpc_cred = cred, | |
4087 | }; | |
4088 | int status; | |
4089 | ||
6de1472f AV |
4090 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
4091 | dentry, | |
eadf4598 | 4092 | (unsigned long long)cookie); |
c3f52af3 | 4093 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 4094 | res.pgbase = args.pgbase; |
7c513058 | 4095 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 4096 | if (status >= 0) { |
c3f52af3 | 4097 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
4098 | status += args.pgbase; |
4099 | } | |
c4812998 TM |
4100 | |
4101 | nfs_invalidate_atime(dir); | |
4102 | ||
3110ff80 | 4103 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
4104 | return status; |
4105 | } | |
4106 | ||
4107 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4108 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
4109 | { |
4110 | struct nfs4_exception exception = { }; | |
4111 | int err; | |
4112 | do { | |
c1578b76 TM |
4113 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
4114 | pages, count, plus); | |
2b0143b5 DH |
4115 | trace_nfs4_readdir(d_inode(dentry), err); |
4116 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
4117 | &exception); |
4118 | } while (exception.retry); | |
4119 | return err; | |
4120 | } | |
4121 | ||
4122 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 4123 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 4124 | { |
57dc9a57 TM |
4125 | struct nfs4_createdata *data; |
4126 | int mode = sattr->ia_mode; | |
4127 | int status = -ENOMEM; | |
1da177e4 | 4128 | |
57dc9a57 TM |
4129 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
4130 | if (data == NULL) | |
4131 | goto out; | |
4132 | ||
1da177e4 | 4133 | if (S_ISFIFO(mode)) |
57dc9a57 | 4134 | data->arg.ftype = NF4FIFO; |
1da177e4 | 4135 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
4136 | data->arg.ftype = NF4BLK; |
4137 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4138 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
4139 | } |
4140 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
4141 | data->arg.ftype = NF4CHR; |
4142 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4143 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
4144 | } else if (!S_ISSOCK(mode)) { |
4145 | status = -EINVAL; | |
4146 | goto out_free; | |
1da177e4 | 4147 | } |
1775fd3e | 4148 | |
aa9c2669 | 4149 | data->arg.label = label; |
57dc9a57 | 4150 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4151 | out_free: |
57dc9a57 TM |
4152 | nfs4_free_createdata(data); |
4153 | out: | |
1da177e4 LT |
4154 | return status; |
4155 | } | |
4156 | ||
4157 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4158 | struct iattr *sattr, dev_t rdev) | |
4159 | { | |
4160 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4161 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4162 | int err; |
a8a5da99 | 4163 | |
aa9c2669 DQ |
4164 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4165 | ||
a8a5da99 | 4166 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4167 | do { |
078ea3df TM |
4168 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4169 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4170 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4171 | &exception); |
4172 | } while (exception.retry); | |
aa9c2669 DQ |
4173 | |
4174 | nfs4_label_release_security(label); | |
4175 | ||
1da177e4 LT |
4176 | return err; |
4177 | } | |
4178 | ||
4179 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4180 | struct nfs_fsstat *fsstat) | |
4181 | { | |
4182 | struct nfs4_statfs_arg args = { | |
4183 | .fh = fhandle, | |
4184 | .bitmask = server->attr_bitmask, | |
4185 | }; | |
24ad148a BH |
4186 | struct nfs4_statfs_res res = { |
4187 | .fsstat = fsstat, | |
4188 | }; | |
1da177e4 LT |
4189 | struct rpc_message msg = { |
4190 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4191 | .rpc_argp = &args, | |
24ad148a | 4192 | .rpc_resp = &res, |
1da177e4 LT |
4193 | }; |
4194 | ||
0e574af1 | 4195 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4196 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4197 | } |
4198 | ||
4199 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4200 | { | |
4201 | struct nfs4_exception exception = { }; | |
4202 | int err; | |
4203 | do { | |
4204 | err = nfs4_handle_exception(server, | |
4205 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4206 | &exception); | |
4207 | } while (exception.retry); | |
4208 | return err; | |
4209 | } | |
4210 | ||
4211 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4212 | struct nfs_fsinfo *fsinfo) | |
4213 | { | |
4214 | struct nfs4_fsinfo_arg args = { | |
4215 | .fh = fhandle, | |
4216 | .bitmask = server->attr_bitmask, | |
4217 | }; | |
3dda5e43 BH |
4218 | struct nfs4_fsinfo_res res = { |
4219 | .fsinfo = fsinfo, | |
4220 | }; | |
1da177e4 LT |
4221 | struct rpc_message msg = { |
4222 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4223 | .rpc_argp = &args, | |
3dda5e43 | 4224 | .rpc_resp = &res, |
1da177e4 LT |
4225 | }; |
4226 | ||
7c513058 | 4227 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4228 | } |
4229 | ||
4230 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4231 | { | |
4232 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4233 | unsigned long now = jiffies; |
1da177e4 LT |
4234 | int err; |
4235 | ||
4236 | do { | |
83ca7f5a | 4237 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4238 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4239 | if (err == 0) { |
4240 | struct nfs_client *clp = server->nfs_client; | |
4241 | ||
4242 | spin_lock(&clp->cl_lock); | |
4243 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4244 | clp->cl_last_renewal = now; | |
4245 | spin_unlock(&clp->cl_lock); | |
4246 | break; | |
4247 | } | |
4248 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4249 | } while (exception.retry); |
4250 | return err; | |
4251 | } | |
4252 | ||
4253 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4254 | { | |
e38eb650 BS |
4255 | int error; |
4256 | ||
0e574af1 | 4257 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4258 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4259 | if (error == 0) { |
4260 | /* block layout checks this! */ | |
4261 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4262 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4263 | } |
e38eb650 BS |
4264 | |
4265 | return error; | |
1da177e4 LT |
4266 | } |
4267 | ||
4268 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4269 | struct nfs_pathconf *pathconf) | |
4270 | { | |
4271 | struct nfs4_pathconf_arg args = { | |
4272 | .fh = fhandle, | |
4273 | .bitmask = server->attr_bitmask, | |
4274 | }; | |
d45b2989 BH |
4275 | struct nfs4_pathconf_res res = { |
4276 | .pathconf = pathconf, | |
4277 | }; | |
1da177e4 LT |
4278 | struct rpc_message msg = { |
4279 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4280 | .rpc_argp = &args, | |
d45b2989 | 4281 | .rpc_resp = &res, |
1da177e4 LT |
4282 | }; |
4283 | ||
4284 | /* None of the pathconf attributes are mandatory to implement */ | |
4285 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4286 | memset(pathconf, 0, sizeof(*pathconf)); | |
4287 | return 0; | |
4288 | } | |
4289 | ||
0e574af1 | 4290 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4291 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4292 | } |
4293 | ||
4294 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4295 | struct nfs_pathconf *pathconf) | |
4296 | { | |
4297 | struct nfs4_exception exception = { }; | |
4298 | int err; | |
4299 | ||
4300 | do { | |
4301 | err = nfs4_handle_exception(server, | |
4302 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4303 | &exception); | |
4304 | } while (exception.retry); | |
4305 | return err; | |
4306 | } | |
4307 | ||
5521abfd | 4308 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4309 | const struct nfs_open_context *ctx, |
4310 | const struct nfs_lock_context *l_ctx, | |
4311 | fmode_t fmode) | |
4312 | { | |
4313 | const struct nfs_lockowner *lockowner = NULL; | |
4314 | ||
4315 | if (l_ctx != NULL) | |
4316 | lockowner = &l_ctx->lockowner; | |
abf4e13c | 4317 | return nfs4_select_rw_stateid(ctx->state, fmode, lockowner, stateid, NULL); |
9b206149 TM |
4318 | } |
4319 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4320 | ||
5521abfd TM |
4321 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4322 | const struct nfs_open_context *ctx, | |
4323 | const struct nfs_lock_context *l_ctx, | |
4324 | fmode_t fmode) | |
4325 | { | |
4326 | nfs4_stateid current_stateid; | |
4327 | ||
e1253be0 TM |
4328 | /* If the current stateid represents a lost lock, then exit */ |
4329 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4330 | return true; | |
5521abfd TM |
4331 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4332 | } | |
4333 | ||
4334 | static bool nfs4_error_stateid_expired(int err) | |
4335 | { | |
4336 | switch (err) { | |
4337 | case -NFS4ERR_DELEG_REVOKED: | |
4338 | case -NFS4ERR_ADMIN_REVOKED: | |
4339 | case -NFS4ERR_BAD_STATEID: | |
4340 | case -NFS4ERR_STALE_STATEID: | |
4341 | case -NFS4ERR_OLD_STATEID: | |
4342 | case -NFS4ERR_OPENMODE: | |
4343 | case -NFS4ERR_EXPIRED: | |
4344 | return true; | |
4345 | } | |
4346 | return false; | |
4347 | } | |
4348 | ||
d45f60c6 | 4349 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4350 | { |
d45f60c6 | 4351 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4352 | } |
4353 | ||
d45f60c6 | 4354 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4355 | { |
d45f60c6 | 4356 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4357 | |
d45f60c6 WAA |
4358 | trace_nfs4_read(hdr, task->tk_status); |
4359 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4360 | hdr->args.context->state, |
4361 | NULL) == -EAGAIN) { | |
d00c5d43 | 4362 | rpc_restart_call_prepare(task); |
ec06c096 | 4363 | return -EAGAIN; |
1da177e4 | 4364 | } |
8850df99 | 4365 | |
d45f60c6 | 4366 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4367 | if (task->tk_status > 0) |
d45f60c6 | 4368 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4369 | return 0; |
1da177e4 LT |
4370 | } |
4371 | ||
5521abfd | 4372 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4373 | struct nfs_pgio_args *args) |
5521abfd TM |
4374 | { |
4375 | ||
4376 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4377 | nfs4_stateid_is_current(&args->stateid, | |
4378 | args->context, | |
4379 | args->lock_context, | |
4380 | FMODE_READ)) | |
4381 | return false; | |
4382 | rpc_restart_call_prepare(task); | |
4383 | return true; | |
4384 | } | |
4385 | ||
d45f60c6 | 4386 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4387 | { |
4388 | ||
4389 | dprintk("--> %s\n", __func__); | |
4390 | ||
d45f60c6 | 4391 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4392 | return -EAGAIN; |
d45f60c6 | 4393 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4394 | return -EAGAIN; |
d45f60c6 WAA |
4395 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4396 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4397 | } |
4398 | ||
d45f60c6 WAA |
4399 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4400 | struct rpc_message *msg) | |
1da177e4 | 4401 | { |
d45f60c6 | 4402 | hdr->timestamp = jiffies; |
ca857cc1 TM |
4403 | if (!hdr->pgio_done_cb) |
4404 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4405 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4406 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4407 | } |
4408 | ||
d45f60c6 WAA |
4409 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4410 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4411 | { |
d45f60c6 WAA |
4412 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4413 | &hdr->args.seq_args, | |
4414 | &hdr->res.seq_res, | |
9b206149 | 4415 | task)) |
ef1820f9 | 4416 | return 0; |
d45f60c6 WAA |
4417 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4418 | hdr->args.lock_context, | |
4419 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4420 | return -EIO; |
d45f60c6 | 4421 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4422 | return -EIO; |
4423 | return 0; | |
1da177e4 LT |
4424 | } |
4425 | ||
d45f60c6 WAA |
4426 | static int nfs4_write_done_cb(struct rpc_task *task, |
4427 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4428 | { |
d45f60c6 | 4429 | struct inode *inode = hdr->inode; |
8478eaa1 | 4430 | |
d45f60c6 WAA |
4431 | trace_nfs4_write(hdr, task->tk_status); |
4432 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4433 | hdr->args.context->state, |
4434 | NULL) == -EAGAIN) { | |
d00c5d43 | 4435 | rpc_restart_call_prepare(task); |
788e7a89 | 4436 | return -EAGAIN; |
1da177e4 | 4437 | } |
4f9838c7 | 4438 | if (task->tk_status >= 0) { |
d45f60c6 | 4439 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4440 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4441 | } |
788e7a89 | 4442 | return 0; |
1da177e4 LT |
4443 | } |
4444 | ||
5521abfd | 4445 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4446 | struct nfs_pgio_args *args) |
5521abfd TM |
4447 | { |
4448 | ||
4449 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4450 | nfs4_stateid_is_current(&args->stateid, | |
4451 | args->context, | |
4452 | args->lock_context, | |
4453 | FMODE_WRITE)) | |
4454 | return false; | |
4455 | rpc_restart_call_prepare(task); | |
4456 | return true; | |
4457 | } | |
4458 | ||
d45f60c6 | 4459 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4460 | { |
d45f60c6 | 4461 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4462 | return -EAGAIN; |
d45f60c6 | 4463 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4464 | return -EAGAIN; |
d45f60c6 WAA |
4465 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4466 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4467 | } |
4468 | ||
5a37f851 | 4469 | static |
d45f60c6 | 4470 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4471 | { |
5a37f851 | 4472 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4473 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4474 | return false; |
4475 | /* Otherwise, request attributes if and only if we don't hold | |
4476 | * a delegation | |
4477 | */ | |
011e2a7f | 4478 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4479 | } |
a69aef14 | 4480 | |
d45f60c6 WAA |
4481 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4482 | struct rpc_message *msg) | |
1da177e4 | 4483 | { |
d45f60c6 | 4484 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4485 | |
d45f60c6 WAA |
4486 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4487 | hdr->args.bitmask = NULL; | |
4488 | hdr->res.fattr = NULL; | |
7ffd1064 | 4489 | } else |
d45f60c6 | 4490 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4491 | |
d45f60c6 WAA |
4492 | if (!hdr->pgio_done_cb) |
4493 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4494 | hdr->res.server = server; | |
4495 | hdr->timestamp = jiffies; | |
1da177e4 | 4496 | |
bdc7f021 | 4497 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4498 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4499 | } |
4500 | ||
0b7c0153 | 4501 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4502 | { |
d9afbd1b TM |
4503 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4504 | &data->args.seq_args, | |
4505 | &data->res.seq_res, | |
4506 | task); | |
1da177e4 LT |
4507 | } |
4508 | ||
0b7c0153 | 4509 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4510 | { |
1da177e4 | 4511 | struct inode *inode = data->inode; |
14516c3a | 4512 | |
cc668ab3 | 4513 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4514 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4515 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4516 | rpc_restart_call_prepare(task); |
788e7a89 | 4517 | return -EAGAIN; |
1da177e4 | 4518 | } |
788e7a89 | 4519 | return 0; |
1da177e4 LT |
4520 | } |
4521 | ||
0b7c0153 | 4522 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4523 | { |
4524 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4525 | return -EAGAIN; | |
0b7c0153 | 4526 | return data->commit_done_cb(task, data); |
5f452431 FI |
4527 | } |
4528 | ||
0b7c0153 | 4529 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4530 | { |
788e7a89 | 4531 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4532 | |
0b7c0153 FI |
4533 | if (data->commit_done_cb == NULL) |
4534 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4535 | data->res.server = server; |
bdc7f021 | 4536 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4537 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4538 | } |
4539 | ||
9bc4e3ca CL |
4540 | struct nfs4_renewdata { |
4541 | struct nfs_client *client; | |
4542 | unsigned long timestamp; | |
4543 | }; | |
4544 | ||
1da177e4 LT |
4545 | /* |
4546 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4547 | * standalone procedure for queueing an asynchronous RENEW. | |
4548 | */ | |
9bc4e3ca | 4549 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4550 | { |
9bc4e3ca CL |
4551 | struct nfs4_renewdata *data = calldata; |
4552 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4553 | |
0851de06 AB |
4554 | if (atomic_read(&clp->cl_count) > 1) |
4555 | nfs4_schedule_state_renewal(clp); | |
4556 | nfs_put_client(clp); | |
9bc4e3ca | 4557 | kfree(data); |
dc96aef9 AB |
4558 | } |
4559 | ||
9bc4e3ca | 4560 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4561 | { |
9bc4e3ca CL |
4562 | struct nfs4_renewdata *data = calldata; |
4563 | struct nfs_client *clp = data->client; | |
4564 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4565 | |
c6d01c6f | 4566 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4567 | switch (task->tk_status) { |
4568 | case 0: | |
4569 | break; | |
4570 | case -NFS4ERR_LEASE_MOVED: | |
4571 | nfs4_schedule_lease_moved_recovery(clp); | |
4572 | break; | |
4573 | default: | |
95baa25c | 4574 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4575 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4576 | return; | |
4577 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4578 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4579 | return; |
4580 | } | |
4581 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4582 | } |
452e9352 | 4583 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4584 | } |
4585 | ||
963d8fe5 TM |
4586 | static const struct rpc_call_ops nfs4_renew_ops = { |
4587 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4588 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4589 | }; |
4590 | ||
2f60ea6b | 4591 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4592 | { |
4593 | struct rpc_message msg = { | |
4594 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4595 | .rpc_argp = clp, | |
b4454fe1 | 4596 | .rpc_cred = cred, |
1da177e4 | 4597 | }; |
9bc4e3ca | 4598 | struct nfs4_renewdata *data; |
1da177e4 | 4599 | |
2f60ea6b TM |
4600 | if (renew_flags == 0) |
4601 | return 0; | |
0851de06 AB |
4602 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4603 | return -EIO; | |
b569ad34 | 4604 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4605 | if (data == NULL) |
4606 | return -ENOMEM; | |
4607 | data->client = clp; | |
4608 | data->timestamp = jiffies; | |
bc7a05ca | 4609 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4610 | &nfs4_renew_ops, data); |
1da177e4 LT |
4611 | } |
4612 | ||
8534d4ec | 4613 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4614 | { |
4615 | struct rpc_message msg = { | |
4616 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4617 | .rpc_argp = clp, | |
b4454fe1 | 4618 | .rpc_cred = cred, |
1da177e4 LT |
4619 | }; |
4620 | unsigned long now = jiffies; | |
4621 | int status; | |
4622 | ||
bc7a05ca | 4623 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4624 | if (status < 0) |
4625 | return status; | |
452e9352 | 4626 | do_renew_lease(clp, now); |
1da177e4 LT |
4627 | return 0; |
4628 | } | |
4629 | ||
aa1870af BF |
4630 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4631 | { | |
7dd7d959 | 4632 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4633 | } |
4634 | ||
21f498c2 TM |
4635 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4636 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4637 | * the stack. |
4638 | */ | |
21f498c2 | 4639 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4640 | |
e9e3d724 | 4641 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 4642 | struct page **pages) |
e9e3d724 NH |
4643 | { |
4644 | struct page *newpage, **spages; | |
4645 | int rc = 0; | |
4646 | size_t len; | |
4647 | spages = pages; | |
4648 | ||
4649 | do { | |
21f498c2 | 4650 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4651 | newpage = alloc_page(GFP_KERNEL); |
4652 | ||
4653 | if (newpage == NULL) | |
4654 | goto unwind; | |
4655 | memcpy(page_address(newpage), buf, len); | |
4656 | buf += len; | |
4657 | buflen -= len; | |
4658 | *pages++ = newpage; | |
4659 | rc++; | |
4660 | } while (buflen != 0); | |
4661 | ||
4662 | return rc; | |
4663 | ||
4664 | unwind: | |
4665 | for(; rc > 0; rc--) | |
4666 | __free_page(spages[rc-1]); | |
4667 | return -ENOMEM; | |
4668 | } | |
4669 | ||
e50a1c2e BF |
4670 | struct nfs4_cached_acl { |
4671 | int cached; | |
4672 | size_t len; | |
3e9d4154 | 4673 | char data[0]; |
e50a1c2e BF |
4674 | }; |
4675 | ||
4676 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4677 | { | |
4678 | struct nfs_inode *nfsi = NFS_I(inode); | |
4679 | ||
4680 | spin_lock(&inode->i_lock); | |
4681 | kfree(nfsi->nfs4_acl); | |
4682 | nfsi->nfs4_acl = acl; | |
4683 | spin_unlock(&inode->i_lock); | |
4684 | } | |
4685 | ||
4686 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4687 | { | |
4688 | nfs4_set_cached_acl(inode, NULL); | |
4689 | } | |
4690 | ||
4691 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4692 | { | |
4693 | struct nfs_inode *nfsi = NFS_I(inode); | |
4694 | struct nfs4_cached_acl *acl; | |
4695 | int ret = -ENOENT; | |
4696 | ||
4697 | spin_lock(&inode->i_lock); | |
4698 | acl = nfsi->nfs4_acl; | |
4699 | if (acl == NULL) | |
4700 | goto out; | |
4701 | if (buf == NULL) /* user is just asking for length */ | |
4702 | goto out_len; | |
4703 | if (acl->cached == 0) | |
4704 | goto out; | |
4705 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4706 | if (acl->len > buflen) | |
4707 | goto out; | |
4708 | memcpy(buf, acl->data, acl->len); | |
4709 | out_len: | |
4710 | ret = acl->len; | |
4711 | out: | |
4712 | spin_unlock(&inode->i_lock); | |
4713 | return ret; | |
4714 | } | |
4715 | ||
5794d21e | 4716 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4717 | { |
4718 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4719 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4720 | |
1f1ea6c2 | 4721 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4722 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4723 | if (acl == NULL) |
4724 | goto out; | |
4725 | acl->cached = 1; | |
5794d21e | 4726 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4727 | } else { |
4728 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4729 | if (acl == NULL) | |
4730 | goto out; | |
4731 | acl->cached = 0; | |
4732 | } | |
4733 | acl->len = acl_len; | |
4734 | out: | |
4735 | nfs4_set_cached_acl(inode, acl); | |
4736 | } | |
4737 | ||
bf118a34 AA |
4738 | /* |
4739 | * The getxattr API returns the required buffer length when called with a | |
4740 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4741 | * the required buf. On a NULL buf, we send a page of data to the server | |
4742 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4743 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4744 | * the cache. If not so, we throw away the page, and cache the required | |
4745 | * length. The next getxattr call will then produce another round trip to | |
4746 | * the server, this time with the input buf of the required size. | |
4747 | */ | |
16b4289c | 4748 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4749 | { |
bf118a34 | 4750 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4751 | struct nfs_getaclargs args = { |
4752 | .fh = NFS_FH(inode), | |
4753 | .acl_pages = pages, | |
4754 | .acl_len = buflen, | |
4755 | }; | |
663c79b3 BH |
4756 | struct nfs_getaclres res = { |
4757 | .acl_len = buflen, | |
4758 | }; | |
aa1870af BF |
4759 | struct rpc_message msg = { |
4760 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4761 | .rpc_argp = &args, | |
663c79b3 | 4762 | .rpc_resp = &res, |
aa1870af | 4763 | }; |
21f498c2 TM |
4764 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4765 | int ret = -ENOMEM, i; | |
aa1870af | 4766 | |
bf118a34 AA |
4767 | /* As long as we're doing a round trip to the server anyway, |
4768 | * let's be prepared for a page of acl data. */ | |
4769 | if (npages == 0) | |
4770 | npages = 1; | |
21f498c2 TM |
4771 | if (npages > ARRAY_SIZE(pages)) |
4772 | return -ERANGE; | |
5a006899 | 4773 | |
bf118a34 AA |
4774 | for (i = 0; i < npages; i++) { |
4775 | pages[i] = alloc_page(GFP_KERNEL); | |
4776 | if (!pages[i]) | |
4777 | goto out_free; | |
e50a1c2e | 4778 | } |
5a006899 SP |
4779 | |
4780 | /* for decoding across pages */ | |
4781 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4782 | if (!res.acl_scratch) | |
4783 | goto out_free; | |
4784 | ||
bf118a34 | 4785 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 4786 | |
de040bec | 4787 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4788 | __func__, buf, buflen, npages, args.acl_len); |
4789 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4790 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4791 | if (ret) |
4792 | goto out_free; | |
bf118a34 | 4793 | |
1f1ea6c2 TM |
4794 | /* Handle the case where the passed-in buffer is too short */ |
4795 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4796 | /* Did the user only issue a request for the acl length? */ | |
4797 | if (buf == NULL) | |
4798 | goto out_ok; | |
e50a1c2e | 4799 | ret = -ERANGE; |
1f1ea6c2 | 4800 | goto out_free; |
e50a1c2e | 4801 | } |
1f1ea6c2 | 4802 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4803 | if (buf) { |
4804 | if (res.acl_len > buflen) { | |
4805 | ret = -ERANGE; | |
4806 | goto out_free; | |
4807 | } | |
1f1ea6c2 | 4808 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4809 | } |
1f1ea6c2 TM |
4810 | out_ok: |
4811 | ret = res.acl_len; | |
e50a1c2e | 4812 | out_free: |
bf118a34 AA |
4813 | for (i = 0; i < npages; i++) |
4814 | if (pages[i]) | |
4815 | __free_page(pages[i]); | |
331818f1 TM |
4816 | if (res.acl_scratch) |
4817 | __free_page(res.acl_scratch); | |
aa1870af BF |
4818 | return ret; |
4819 | } | |
4820 | ||
16b4289c TM |
4821 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4822 | { | |
4823 | struct nfs4_exception exception = { }; | |
4824 | ssize_t ret; | |
4825 | do { | |
4826 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4827 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4828 | if (ret >= 0) |
4829 | break; | |
4830 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4831 | } while (exception.retry); | |
4832 | return ret; | |
4833 | } | |
4834 | ||
e50a1c2e BF |
4835 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4836 | { | |
4837 | struct nfs_server *server = NFS_SERVER(inode); | |
4838 | int ret; | |
4839 | ||
4840 | if (!nfs4_server_supports_acls(server)) | |
4841 | return -EOPNOTSUPP; | |
4842 | ret = nfs_revalidate_inode(server, inode); | |
4843 | if (ret < 0) | |
4844 | return ret; | |
08a22b39 AK |
4845 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4846 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4847 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4848 | if (ret != -ENOENT) | |
bf118a34 AA |
4849 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4850 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4851 | return ret; |
4852 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4853 | } | |
4854 | ||
16b4289c | 4855 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4856 | { |
4857 | struct nfs_server *server = NFS_SERVER(inode); | |
4858 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4859 | struct nfs_setaclargs arg = { | |
4860 | .fh = NFS_FH(inode), | |
4861 | .acl_pages = pages, | |
4862 | .acl_len = buflen, | |
4863 | }; | |
73c403a9 | 4864 | struct nfs_setaclres res; |
4b580ee3 BF |
4865 | struct rpc_message msg = { |
4866 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4867 | .rpc_argp = &arg, | |
73c403a9 | 4868 | .rpc_resp = &res, |
4b580ee3 | 4869 | }; |
21f498c2 | 4870 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4871 | int ret, i; |
4b580ee3 BF |
4872 | |
4873 | if (!nfs4_server_supports_acls(server)) | |
4874 | return -EOPNOTSUPP; | |
21f498c2 TM |
4875 | if (npages > ARRAY_SIZE(pages)) |
4876 | return -ERANGE; | |
8fbcf237 | 4877 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
4878 | if (i < 0) |
4879 | return i; | |
57ec14c5 | 4880 | nfs4_inode_return_delegation(inode); |
7c513058 | 4881 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4882 | |
4883 | /* | |
4884 | * Free each page after tx, so the only ref left is | |
4885 | * held by the network stack | |
4886 | */ | |
4887 | for (; i > 0; i--) | |
4888 | put_page(pages[i-1]); | |
4889 | ||
08a22b39 AK |
4890 | /* |
4891 | * Acl update can result in inode attribute update. | |
4892 | * so mark the attribute cache invalid. | |
4893 | */ | |
4894 | spin_lock(&inode->i_lock); | |
4895 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4896 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4897 | nfs_access_zap_cache(inode); |
4898 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4899 | return ret; |
4900 | } | |
4901 | ||
16b4289c TM |
4902 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4903 | { | |
4904 | struct nfs4_exception exception = { }; | |
4905 | int err; | |
4906 | do { | |
c1578b76 TM |
4907 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4908 | trace_nfs4_set_acl(inode, err); | |
4909 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4910 | &exception); |
4911 | } while (exception.retry); | |
4912 | return err; | |
4913 | } | |
4914 | ||
aa9c2669 DQ |
4915 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4916 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4917 | size_t buflen) | |
4918 | { | |
4919 | struct nfs_server *server = NFS_SERVER(inode); | |
4920 | struct nfs_fattr fattr; | |
4921 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4922 | ||
4923 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4924 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4925 | .fh = NFS_FH(inode), |
4926 | .bitmask = bitmask, | |
4927 | }; | |
4928 | struct nfs4_getattr_res res = { | |
4929 | .fattr = &fattr, | |
4930 | .label = &label, | |
4931 | .server = server, | |
4932 | }; | |
4933 | struct rpc_message msg = { | |
4934 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4935 | .rpc_argp = &arg, |
aa9c2669 DQ |
4936 | .rpc_resp = &res, |
4937 | }; | |
4938 | int ret; | |
4939 | ||
4940 | nfs_fattr_init(&fattr); | |
4941 | ||
fcb63a9b | 4942 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4943 | if (ret) |
4944 | return ret; | |
4945 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4946 | return -ENOENT; | |
4947 | if (buflen < label.len) | |
4948 | return -ERANGE; | |
4949 | return 0; | |
4950 | } | |
4951 | ||
4952 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4953 | size_t buflen) | |
4954 | { | |
4955 | struct nfs4_exception exception = { }; | |
4956 | int err; | |
4957 | ||
4958 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4959 | return -EOPNOTSUPP; | |
4960 | ||
4961 | do { | |
c1578b76 TM |
4962 | err = _nfs4_get_security_label(inode, buf, buflen); |
4963 | trace_nfs4_get_security_label(inode, err); | |
4964 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4965 | &exception); |
4966 | } while (exception.retry); | |
4967 | return err; | |
4968 | } | |
4969 | ||
4970 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4971 | struct nfs4_label *ilabel, | |
4972 | struct nfs_fattr *fattr, | |
4973 | struct nfs4_label *olabel) | |
4974 | { | |
4975 | ||
4976 | struct iattr sattr = {0}; | |
4977 | struct nfs_server *server = NFS_SERVER(inode); | |
4978 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4979 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4980 | .fh = NFS_FH(inode), |
4981 | .iap = &sattr, | |
4982 | .server = server, | |
4983 | .bitmask = bitmask, | |
4984 | .label = ilabel, | |
4985 | }; | |
4986 | struct nfs_setattrres res = { | |
4987 | .fattr = fattr, | |
4988 | .label = olabel, | |
4989 | .server = server, | |
4990 | }; | |
4991 | struct rpc_message msg = { | |
4992 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4993 | .rpc_argp = &arg, |
aa9c2669 DQ |
4994 | .rpc_resp = &res, |
4995 | }; | |
4996 | int status; | |
4997 | ||
12207f69 | 4998 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4999 | |
12207f69 | 5000 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
5001 | if (status) |
5002 | dprintk("%s failed: %d\n", __func__, status); | |
5003 | ||
5004 | return status; | |
5005 | } | |
5006 | ||
5007 | static int nfs4_do_set_security_label(struct inode *inode, | |
5008 | struct nfs4_label *ilabel, | |
5009 | struct nfs_fattr *fattr, | |
5010 | struct nfs4_label *olabel) | |
5011 | { | |
5012 | struct nfs4_exception exception = { }; | |
5013 | int err; | |
5014 | ||
5015 | do { | |
c1578b76 TM |
5016 | err = _nfs4_do_set_security_label(inode, ilabel, |
5017 | fattr, olabel); | |
5018 | trace_nfs4_set_security_label(inode, err); | |
5019 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
5020 | &exception); |
5021 | } while (exception.retry); | |
5022 | return err; | |
5023 | } | |
5024 | ||
5025 | static int | |
59301226 | 5026 | nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen) |
aa9c2669 DQ |
5027 | { |
5028 | struct nfs4_label ilabel, *olabel = NULL; | |
5029 | struct nfs_fattr fattr; | |
5030 | struct rpc_cred *cred; | |
aa9c2669 DQ |
5031 | int status; |
5032 | ||
5033 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
5034 | return -EOPNOTSUPP; | |
5035 | ||
5036 | nfs_fattr_init(&fattr); | |
5037 | ||
5038 | ilabel.pi = 0; | |
5039 | ilabel.lfs = 0; | |
5040 | ilabel.label = (char *)buf; | |
5041 | ilabel.len = buflen; | |
5042 | ||
5043 | cred = rpc_lookup_cred(); | |
5044 | if (IS_ERR(cred)) | |
5045 | return PTR_ERR(cred); | |
5046 | ||
5047 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
5048 | if (IS_ERR(olabel)) { | |
5049 | status = -PTR_ERR(olabel); | |
5050 | goto out; | |
5051 | } | |
5052 | ||
5053 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
5054 | if (status == 0) | |
5055 | nfs_setsecurity(inode, &fattr, olabel); | |
5056 | ||
5057 | nfs4_label_free(olabel); | |
5058 | out: | |
5059 | put_rpccred(cred); | |
5060 | return status; | |
5061 | } | |
5062 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
5063 | ||
5064 | ||
f092075d CL |
5065 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
5066 | nfs4_verifier *bootverf) | |
cd93710e CL |
5067 | { |
5068 | __be32 verf[2]; | |
5069 | ||
2c820d9a CL |
5070 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
5071 | /* An impossible timestamp guarantees this value | |
5072 | * will never match a generated boot time. */ | |
5073 | verf[0] = 0; | |
17f26b12 | 5074 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5075 | } else { |
f092075d | 5076 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5077 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5078 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5079 | } |
cd93710e CL |
5080 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5081 | } | |
5082 | ||
a3192688 JL |
5083 | static int |
5084 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5085 | { |
a3192688 JL |
5086 | size_t len; |
5087 | char *str; | |
e984a55a | 5088 | |
ceb3a16c | 5089 | if (clp->cl_owner_id != NULL) |
a3192688 | 5090 | return 0; |
4a3e5779 | 5091 | |
a3192688 | 5092 | rcu_read_lock(); |
4a70316c | 5093 | len = 14 + strlen(clp->cl_ipaddr) + 1 + |
a3192688 JL |
5094 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
5095 | 1 + | |
5096 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5097 | 1; | |
5098 | rcu_read_unlock(); | |
5099 | ||
5100 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5101 | return -EINVAL; | |
5102 | ||
5103 | /* | |
5104 | * Since this string is allocated at mount time, and held until the | |
5105 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5106 | * about a memory-reclaim deadlock. | |
5107 | */ | |
5108 | str = kmalloc(len, GFP_KERNEL); | |
5109 | if (!str) | |
5110 | return -ENOMEM; | |
ceb3a16c | 5111 | |
e984a55a | 5112 | rcu_read_lock(); |
f2dd436e | 5113 | scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
a3192688 JL |
5114 | clp->cl_ipaddr, |
5115 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5116 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5117 | rcu_read_unlock(); |
a3192688 | 5118 | |
a3192688 JL |
5119 | clp->cl_owner_id = str; |
5120 | return 0; | |
e984a55a CL |
5121 | } |
5122 | ||
873e3851 JL |
5123 | static int |
5124 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5125 | { | |
873e3851 JL |
5126 | size_t len; |
5127 | char *str; | |
5128 | ||
5129 | len = 10 + 10 + 1 + 10 + 1 + | |
5130 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5131 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5132 | ||
5133 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5134 | return -EINVAL; | |
5135 | ||
5136 | /* | |
5137 | * Since this string is allocated at mount time, and held until the | |
5138 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5139 | * about a memory-reclaim deadlock. | |
5140 | */ | |
5141 | str = kmalloc(len, GFP_KERNEL); | |
5142 | if (!str) | |
5143 | return -ENOMEM; | |
5144 | ||
f2dd436e | 5145 | scnprintf(str, len, "Linux NFSv%u.%u %s/%s", |
873e3851 JL |
5146 | clp->rpc_ops->version, clp->cl_minorversion, |
5147 | nfs4_client_id_uniquifier, | |
5148 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5149 | clp->cl_owner_id = str; |
5150 | return 0; | |
5151 | } | |
5152 | ||
5153 | static int | |
5154 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5155 | { |
873e3851 JL |
5156 | size_t len; |
5157 | char *str; | |
ceb3a16c TM |
5158 | |
5159 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5160 | return 0; |
6f2ea7f2 CL |
5161 | |
5162 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5163 | return nfs4_init_uniquifier_client_string(clp); |
5164 | ||
5165 | len = 10 + 10 + 1 + 10 + 1 + | |
5166 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5167 | ||
5168 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5169 | return -EINVAL; | |
5170 | ||
5171 | /* | |
5172 | * Since this string is allocated at mount time, and held until the | |
5173 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5174 | * about a memory-reclaim deadlock. | |
5175 | */ | |
5176 | str = kmalloc(len, GFP_KERNEL); | |
5177 | if (!str) | |
5178 | return -ENOMEM; | |
5179 | ||
f2dd436e | 5180 | scnprintf(str, len, "Linux NFSv%u.%u %s", |
873e3851 JL |
5181 | clp->rpc_ops->version, clp->cl_minorversion, |
5182 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5183 | clp->cl_owner_id = str; |
5184 | return 0; | |
e984a55a CL |
5185 | } |
5186 | ||
706cb8db CL |
5187 | /* |
5188 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5189 | * services. Advertise one based on the address family of the | |
5190 | * clientaddr. | |
5191 | */ | |
5192 | static unsigned int | |
5193 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5194 | { | |
5195 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5196 | return scnprintf(buf, len, "tcp6"); | |
5197 | else | |
5198 | return scnprintf(buf, len, "tcp"); | |
5199 | } | |
5200 | ||
f11b2a1c JL |
5201 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5202 | { | |
5203 | struct nfs4_setclientid *sc = calldata; | |
5204 | ||
5205 | if (task->tk_status == 0) | |
5206 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5207 | } | |
5208 | ||
5209 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5210 | .rpc_call_done = nfs4_setclientid_done, | |
5211 | }; | |
5212 | ||
6bbb4ae8 CL |
5213 | /** |
5214 | * nfs4_proc_setclientid - Negotiate client ID | |
5215 | * @clp: state data structure | |
5216 | * @program: RPC program for NFSv4 callback service | |
5217 | * @port: IP port number for NFS4 callback service | |
5218 | * @cred: RPC credential to use for this call | |
5219 | * @res: where to place the result | |
5220 | * | |
5221 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5222 | */ | |
bb8b27e5 TM |
5223 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5224 | unsigned short port, struct rpc_cred *cred, | |
5225 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5226 | { |
5227 | nfs4_verifier sc_verifier; | |
5228 | struct nfs4_setclientid setclientid = { | |
5229 | .sc_verifier = &sc_verifier, | |
5230 | .sc_prog = program, | |
3a6bb738 | 5231 | .sc_clnt = clp, |
1da177e4 LT |
5232 | }; |
5233 | struct rpc_message msg = { | |
5234 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5235 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5236 | .rpc_resp = res, |
286d7d6a | 5237 | .rpc_cred = cred, |
1da177e4 | 5238 | }; |
f11b2a1c JL |
5239 | struct rpc_task *task; |
5240 | struct rpc_task_setup task_setup_data = { | |
5241 | .rpc_client = clp->cl_rpcclient, | |
5242 | .rpc_message = &msg, | |
5243 | .callback_ops = &nfs4_setclientid_ops, | |
5244 | .callback_data = &setclientid, | |
5245 | .flags = RPC_TASK_TIMEOUT, | |
5246 | }; | |
6bbb4ae8 | 5247 | int status; |
1da177e4 | 5248 | |
de734831 | 5249 | /* nfs_client_id4 */ |
f092075d | 5250 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5251 | |
5252 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5253 | status = nfs4_init_uniform_client_string(clp); | |
5254 | else | |
a3192688 | 5255 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5256 | |
5257 | if (status) | |
5258 | goto out; | |
3a6bb738 | 5259 | |
de734831 | 5260 | /* cb_client4 */ |
706cb8db CL |
5261 | setclientid.sc_netid_len = |
5262 | nfs4_init_callback_netid(clp, | |
5263 | setclientid.sc_netid, | |
5264 | sizeof(setclientid.sc_netid)); | |
de734831 | 5265 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5266 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5267 | clp->cl_ipaddr, port >> 8, port & 255); |
5268 | ||
3a6bb738 | 5269 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5270 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5271 | clp->cl_owner_id); |
f11b2a1c JL |
5272 | task = rpc_run_task(&task_setup_data); |
5273 | if (IS_ERR(task)) { | |
5274 | status = PTR_ERR(task); | |
5275 | goto out; | |
5276 | } | |
5277 | status = task->tk_status; | |
5278 | if (setclientid.sc_cred) { | |
5279 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5280 | put_rpccred(setclientid.sc_cred); | |
5281 | } | |
5282 | rpc_put_task(task); | |
5283 | out: | |
c6d01c6f | 5284 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5285 | dprintk("NFS reply setclientid: %d\n", status); |
5286 | return status; | |
1da177e4 LT |
5287 | } |
5288 | ||
6bbb4ae8 CL |
5289 | /** |
5290 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5291 | * @clp: state data structure | |
5292 | * @res: result of a previous SETCLIENTID | |
5293 | * @cred: RPC credential to use for this call | |
5294 | * | |
5295 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5296 | */ | |
fd954ae1 | 5297 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5298 | struct nfs4_setclientid_res *arg, |
5299 | struct rpc_cred *cred) | |
1da177e4 | 5300 | { |
1da177e4 LT |
5301 | struct rpc_message msg = { |
5302 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5303 | .rpc_argp = arg, |
286d7d6a | 5304 | .rpc_cred = cred, |
1da177e4 | 5305 | }; |
1da177e4 LT |
5306 | int status; |
5307 | ||
6bbb4ae8 CL |
5308 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5309 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5310 | clp->cl_clientid); | |
1bd714f2 | 5311 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5312 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5313 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5314 | return status; |
5315 | } | |
5316 | ||
fe650407 TM |
5317 | struct nfs4_delegreturndata { |
5318 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5319 | struct nfs4_delegreturnres res; |
fe650407 TM |
5320 | struct nfs_fh fh; |
5321 | nfs4_stateid stateid; | |
26e976a8 | 5322 | unsigned long timestamp; |
fa178f29 | 5323 | struct nfs_fattr fattr; |
fe650407 | 5324 | int rpc_status; |
039b756a PT |
5325 | struct inode *inode; |
5326 | bool roc; | |
5327 | u32 roc_barrier; | |
fe650407 TM |
5328 | }; |
5329 | ||
fe650407 TM |
5330 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5331 | { | |
5332 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5333 | |
14516c3a TM |
5334 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5335 | return; | |
938e1010 | 5336 | |
ca8acf8d | 5337 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5338 | switch (task->tk_status) { |
79708861 | 5339 | case 0: |
fa178f29 | 5340 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5341 | case -NFS4ERR_ADMIN_REVOKED: |
5342 | case -NFS4ERR_DELEG_REVOKED: | |
5343 | case -NFS4ERR_BAD_STATEID: | |
5344 | case -NFS4ERR_OLD_STATEID: | |
5345 | case -NFS4ERR_STALE_STATEID: | |
5346 | case -NFS4ERR_EXPIRED: | |
5347 | task->tk_status = 0; | |
039b756a PT |
5348 | if (data->roc) |
5349 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5350 | break; |
79708861 | 5351 | default: |
8478eaa1 N |
5352 | if (nfs4_async_handle_error(task, data->res.server, |
5353 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5354 | rpc_restart_call_prepare(task); |
79708861 RL |
5355 | return; |
5356 | } | |
5357 | } | |
5358 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5359 | } |
5360 | ||
5361 | static void nfs4_delegreturn_release(void *calldata) | |
5362 | { | |
039b756a | 5363 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5364 | struct inode *inode = data->inode; |
039b756a | 5365 | |
ea7c38fe TM |
5366 | if (inode) { |
5367 | if (data->roc) | |
5368 | pnfs_roc_release(inode); | |
5369 | nfs_iput_and_deactive(inode); | |
5370 | } | |
fe650407 TM |
5371 | kfree(calldata); |
5372 | } | |
5373 | ||
938e1010 AA |
5374 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5375 | { | |
5376 | struct nfs4_delegreturndata *d_data; | |
5377 | ||
5378 | d_data = (struct nfs4_delegreturndata *)data; | |
5379 | ||
500d701f PT |
5380 | if (nfs4_wait_on_layoutreturn(d_data->inode, task)) |
5381 | return; | |
5382 | ||
4ff376fe TM |
5383 | if (d_data->roc) |
5384 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5385 | |
d9afbd1b TM |
5386 | nfs4_setup_sequence(d_data->res.server, |
5387 | &d_data->args.seq_args, | |
5388 | &d_data->res.seq_res, | |
5389 | task); | |
938e1010 | 5390 | } |
938e1010 | 5391 | |
c8d149f3 | 5392 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5393 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5394 | .rpc_call_done = nfs4_delegreturn_done, |
5395 | .rpc_release = nfs4_delegreturn_release, | |
5396 | }; | |
5397 | ||
e6f81075 | 5398 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5399 | { |
5400 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5401 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5402 | struct rpc_task *task; |
5138fde0 TM |
5403 | struct rpc_message msg = { |
5404 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5405 | .rpc_cred = cred, | |
5406 | }; | |
c970aa85 TM |
5407 | struct rpc_task_setup task_setup_data = { |
5408 | .rpc_client = server->client, | |
5138fde0 | 5409 | .rpc_message = &msg, |
c970aa85 TM |
5410 | .callback_ops = &nfs4_delegreturn_ops, |
5411 | .flags = RPC_TASK_ASYNC, | |
5412 | }; | |
e6f81075 | 5413 | int status = 0; |
fe650407 | 5414 | |
8535b2be | 5415 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5416 | if (data == NULL) |
5417 | return -ENOMEM; | |
a9c92d6b | 5418 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
99ade3c7 AE |
5419 | |
5420 | nfs4_state_protect(server->nfs_client, | |
5421 | NFS_SP4_MACH_CRED_CLEANUP, | |
5422 | &task_setup_data.rpc_client, &msg); | |
5423 | ||
fe650407 TM |
5424 | data->args.fhandle = &data->fh; |
5425 | data->args.stateid = &data->stateid; | |
9e907fec | 5426 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5427 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5428 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5429 | data->res.fattr = &data->fattr; |
5430 | data->res.server = server; | |
5138fde0 | 5431 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5432 | data->timestamp = jiffies; |
fe650407 | 5433 | data->rpc_status = 0; |
ea7c38fe TM |
5434 | data->inode = nfs_igrab_and_active(inode); |
5435 | if (data->inode) | |
5436 | data->roc = nfs4_roc(inode); | |
fe650407 | 5437 | |
c970aa85 | 5438 | task_setup_data.callback_data = data; |
1174dd1f TM |
5439 | msg.rpc_argp = &data->args; |
5440 | msg.rpc_resp = &data->res; | |
c970aa85 | 5441 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5442 | if (IS_ERR(task)) |
fe650407 | 5443 | return PTR_ERR(task); |
e6f81075 TM |
5444 | if (!issync) |
5445 | goto out; | |
fe650407 | 5446 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5447 | if (status != 0) |
5448 | goto out; | |
5449 | status = data->rpc_status; | |
e144cbcc TM |
5450 | if (status == 0) |
5451 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5452 | else | |
5453 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5454 | out: |
e6b3c4db | 5455 | rpc_put_task(task); |
fe650407 | 5456 | return status; |
1da177e4 LT |
5457 | } |
5458 | ||
e6f81075 | 5459 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5460 | { |
5461 | struct nfs_server *server = NFS_SERVER(inode); | |
5462 | struct nfs4_exception exception = { }; | |
5463 | int err; | |
5464 | do { | |
e6f81075 | 5465 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
48c9579a | 5466 | trace_nfs4_delegreturn(inode, stateid, err); |
1da177e4 LT |
5467 | switch (err) { |
5468 | case -NFS4ERR_STALE_STATEID: | |
5469 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5470 | case 0: |
5471 | return 0; | |
5472 | } | |
5473 | err = nfs4_handle_exception(server, err, &exception); | |
5474 | } while (exception.retry); | |
5475 | return err; | |
5476 | } | |
5477 | ||
5478 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5479 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5480 | ||
5481 | /* | |
5482 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5483 | */ | |
5484 | static unsigned long | |
5485 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5486 | { | |
416ad3c9 | 5487 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5488 | timeout <<= 1; |
5489 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5490 | return NFS4_LOCK_MAXTIMEOUT; | |
5491 | return timeout; | |
5492 | } | |
5493 | ||
1da177e4 LT |
5494 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5495 | { | |
5496 | struct inode *inode = state->inode; | |
5497 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5498 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5499 | struct nfs_lockt_args arg = { |
1da177e4 | 5500 | .fh = NFS_FH(inode), |
911d1aaf | 5501 | .fl = request, |
1da177e4 | 5502 | }; |
911d1aaf TM |
5503 | struct nfs_lockt_res res = { |
5504 | .denied = request, | |
1da177e4 LT |
5505 | }; |
5506 | struct rpc_message msg = { | |
5507 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5508 | .rpc_argp = &arg, | |
5509 | .rpc_resp = &res, | |
5510 | .rpc_cred = state->owner->so_cred, | |
5511 | }; | |
1da177e4 LT |
5512 | struct nfs4_lock_state *lsp; |
5513 | int status; | |
5514 | ||
911d1aaf | 5515 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5516 | status = nfs4_set_lock_state(state, request); |
5517 | if (status != 0) | |
5518 | goto out; | |
5519 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5520 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5521 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5522 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5523 | switch (status) { |
5524 | case 0: | |
5525 | request->fl_type = F_UNLCK; | |
5526 | break; | |
5527 | case -NFS4ERR_DENIED: | |
5528 | status = 0; | |
1da177e4 | 5529 | } |
70cc6487 | 5530 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5531 | request->fl_ops = NULL; |
8d0a8a9d | 5532 | out: |
1da177e4 LT |
5533 | return status; |
5534 | } | |
5535 | ||
5536 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5537 | { | |
5538 | struct nfs4_exception exception = { }; | |
5539 | int err; | |
5540 | ||
5541 | do { | |
d1b748a5 TM |
5542 | err = _nfs4_proc_getlk(state, cmd, request); |
5543 | trace_nfs4_get_lock(request, state, cmd, err); | |
5544 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5545 | &exception); |
5546 | } while (exception.retry); | |
5547 | return err; | |
5548 | } | |
5549 | ||
83bfff23 | 5550 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 | 5551 | { |
4f656367 | 5552 | return locks_lock_inode_wait(inode, fl); |
1da177e4 LT |
5553 | } |
5554 | ||
faf5f49c | 5555 | struct nfs4_unlockdata { |
911d1aaf TM |
5556 | struct nfs_locku_args arg; |
5557 | struct nfs_locku_res res; | |
faf5f49c TM |
5558 | struct nfs4_lock_state *lsp; |
5559 | struct nfs_open_context *ctx; | |
911d1aaf | 5560 | struct file_lock fl; |
516285eb | 5561 | struct nfs_server *server; |
26e976a8 | 5562 | unsigned long timestamp; |
faf5f49c TM |
5563 | }; |
5564 | ||
911d1aaf TM |
5565 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5566 | struct nfs_open_context *ctx, | |
5567 | struct nfs4_lock_state *lsp, | |
5568 | struct nfs_seqid *seqid) | |
5569 | { | |
5570 | struct nfs4_unlockdata *p; | |
5571 | struct inode *inode = lsp->ls_state->inode; | |
5572 | ||
8535b2be | 5573 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5574 | if (p == NULL) |
5575 | return NULL; | |
5576 | p->arg.fh = NFS_FH(inode); | |
5577 | p->arg.fl = &p->fl; | |
5578 | p->arg.seqid = seqid; | |
c1d51931 | 5579 | p->res.seqid = seqid; |
911d1aaf TM |
5580 | p->lsp = lsp; |
5581 | atomic_inc(&lsp->ls_count); | |
5582 | /* Ensure we don't close file until we're done freeing locks! */ | |
5583 | p->ctx = get_nfs_open_context(ctx); | |
5584 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5585 | p->server = NFS_SERVER(inode); | |
5586 | return p; | |
5587 | } | |
5588 | ||
06f814a3 | 5589 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5590 | { |
963d8fe5 | 5591 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5592 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5593 | nfs4_put_lock_state(calldata->lsp); |
5594 | put_nfs_open_context(calldata->ctx); | |
5595 | kfree(calldata); | |
faf5f49c TM |
5596 | } |
5597 | ||
963d8fe5 | 5598 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5599 | { |
963d8fe5 | 5600 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5601 | |
14516c3a TM |
5602 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5603 | return; | |
faf5f49c TM |
5604 | switch (task->tk_status) { |
5605 | case 0: | |
26e976a8 | 5606 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5607 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5608 | if (nfs4_update_lock_stateid(calldata->lsp, |
5609 | &calldata->res.stateid)) | |
5610 | break; | |
9e33bed5 TM |
5611 | case -NFS4ERR_BAD_STATEID: |
5612 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5613 | case -NFS4ERR_STALE_STATEID: |
5614 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5615 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5616 | &calldata->lsp->ls_stateid)) | |
5617 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5618 | break; |
5619 | default: | |
8478eaa1 N |
5620 | if (nfs4_async_handle_error(task, calldata->server, |
5621 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5622 | rpc_restart_call_prepare(task); |
faf5f49c | 5623 | } |
2b1bc308 | 5624 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5625 | } |
5626 | ||
4ce70ada | 5627 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5628 | { |
4ce70ada | 5629 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5630 | |
911d1aaf | 5631 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5632 | goto out_wait; |
425c1d4e | 5633 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5634 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5635 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5636 | goto out_no_action; |
faf5f49c | 5637 | } |
26e976a8 | 5638 | calldata->timestamp = jiffies; |
035168ab | 5639 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5640 | &calldata->arg.seq_args, |
2240a9e2 TM |
5641 | &calldata->res.seq_res, |
5642 | task) != 0) | |
5643 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5644 | return; |
5645 | out_no_action: | |
5646 | task->tk_action = NULL; | |
5647 | out_wait: | |
5648 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5649 | } |
5650 | ||
963d8fe5 | 5651 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5652 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5653 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5654 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5655 | }; |
5656 | ||
a5d16a4d TM |
5657 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5658 | struct nfs_open_context *ctx, | |
5659 | struct nfs4_lock_state *lsp, | |
5660 | struct nfs_seqid *seqid) | |
5661 | { | |
5662 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5663 | struct rpc_message msg = { |
5664 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5665 | .rpc_cred = ctx->cred, | |
5666 | }; | |
c970aa85 TM |
5667 | struct rpc_task_setup task_setup_data = { |
5668 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5669 | .rpc_message = &msg, |
c970aa85 | 5670 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5671 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5672 | .flags = RPC_TASK_ASYNC, |
5673 | }; | |
a5d16a4d | 5674 | |
fa940720 WAA |
5675 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5676 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5677 | ||
137d6aca FF |
5678 | /* Ensure this is an unlock - when canceling a lock, the |
5679 | * canceled lock is passed in, and it won't be an unlock. | |
5680 | */ | |
5681 | fl->fl_type = F_UNLCK; | |
5682 | ||
a5d16a4d TM |
5683 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5684 | if (data == NULL) { | |
5685 | nfs_free_seqid(seqid); | |
5686 | return ERR_PTR(-ENOMEM); | |
5687 | } | |
5688 | ||
a9c92d6b | 5689 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5690 | msg.rpc_argp = &data->arg; |
5691 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5692 | task_setup_data.callback_data = data; |
5693 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5694 | } |
5695 | ||
faf5f49c TM |
5696 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5697 | { | |
65b62a29 TM |
5698 | struct inode *inode = state->inode; |
5699 | struct nfs4_state_owner *sp = state->owner; | |
5700 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5701 | struct nfs_seqid *seqid; |
1da177e4 | 5702 | struct nfs4_lock_state *lsp; |
06f814a3 | 5703 | struct rpc_task *task; |
b4019c0e | 5704 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5705 | int status = 0; |
536ff0f8 | 5706 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5707 | |
8d0a8a9d | 5708 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5709 | /* Unlock _before_ we do the RPC call */ |
5710 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5711 | /* Exclude nfs_delegation_claim_locks() */ |
5712 | mutex_lock(&sp->so_delegreturn_mutex); | |
5713 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5714 | down_read(&nfsi->rwsem); |
83bfff23 | 5715 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5716 | up_read(&nfsi->rwsem); |
65b62a29 | 5717 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5718 | goto out; |
19e03c57 TM |
5719 | } |
5720 | up_read(&nfsi->rwsem); | |
65b62a29 | 5721 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5722 | if (status != 0) |
9b073574 TM |
5723 | goto out; |
5724 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5725 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5726 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5727 | goto out; | |
b4019c0e TM |
5728 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5729 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5730 | status = -ENOMEM; |
badc76dd | 5731 | if (IS_ERR(seqid)) |
9b073574 | 5732 | goto out; |
cd3758e3 | 5733 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5734 | status = PTR_ERR(task); |
5735 | if (IS_ERR(task)) | |
9b073574 | 5736 | goto out; |
a5d16a4d | 5737 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5738 | rpc_put_task(task); |
9b073574 | 5739 | out: |
536ff0f8 | 5740 | request->fl_flags = fl_flags; |
d1b748a5 | 5741 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5742 | return status; |
5743 | } | |
5744 | ||
a5d16a4d TM |
5745 | struct nfs4_lockdata { |
5746 | struct nfs_lock_args arg; | |
5747 | struct nfs_lock_res res; | |
5748 | struct nfs4_lock_state *lsp; | |
5749 | struct nfs_open_context *ctx; | |
5750 | struct file_lock fl; | |
26e976a8 | 5751 | unsigned long timestamp; |
a5d16a4d TM |
5752 | int rpc_status; |
5753 | int cancelled; | |
66179efe | 5754 | struct nfs_server *server; |
a5d16a4d TM |
5755 | }; |
5756 | ||
5757 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5758 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5759 | gfp_t gfp_mask) | |
1da177e4 | 5760 | { |
a5d16a4d TM |
5761 | struct nfs4_lockdata *p; |
5762 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5763 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5764 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5765 | |
8535b2be | 5766 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5767 | if (p == NULL) |
5768 | return NULL; | |
5769 | ||
5770 | p->arg.fh = NFS_FH(inode); | |
5771 | p->arg.fl = &p->fl; | |
8535b2be | 5772 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5773 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5774 | goto out_free; |
b4019c0e TM |
5775 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5776 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5777 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5778 | goto out_free_seqid; |
7539bbab | 5779 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5780 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5781 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5782 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5783 | p->lsp = lsp; |
66179efe | 5784 | p->server = server; |
a5d16a4d TM |
5785 | atomic_inc(&lsp->ls_count); |
5786 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5787 | get_file(fl->fl_file); |
a5d16a4d TM |
5788 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5789 | return p; | |
2f74c0a0 TM |
5790 | out_free_seqid: |
5791 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5792 | out_free: |
5793 | kfree(p); | |
5794 | return NULL; | |
5795 | } | |
5796 | ||
5797 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5798 | { | |
5799 | struct nfs4_lockdata *data = calldata; | |
5800 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5801 | |
3110ff80 | 5802 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5803 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5804 | goto out_wait; |
a5d16a4d | 5805 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5806 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5807 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5808 | goto out_release_lock_seqid; |
8fe72bac | 5809 | } |
425c1d4e TM |
5810 | nfs4_stateid_copy(&data->arg.open_stateid, |
5811 | &state->open_stateid); | |
a5d16a4d | 5812 | data->arg.new_lock_owner = 1; |
c1d51931 | 5813 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5814 | } else { |
2f74c0a0 | 5815 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5816 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5817 | &data->lsp->ls_stateid); | |
5818 | } | |
5d422301 TM |
5819 | if (!nfs4_valid_open_stateid(state)) { |
5820 | data->rpc_status = -EBADF; | |
5821 | task->tk_action = NULL; | |
5822 | goto out_release_open_seqid; | |
5823 | } | |
26e976a8 | 5824 | data->timestamp = jiffies; |
035168ab TM |
5825 | if (nfs4_setup_sequence(data->server, |
5826 | &data->arg.seq_args, | |
2240a9e2 | 5827 | &data->res.seq_res, |
d9afbd1b | 5828 | task) == 0) |
66179efe | 5829 | return; |
5d422301 | 5830 | out_release_open_seqid: |
2240a9e2 TM |
5831 | nfs_release_seqid(data->arg.open_seqid); |
5832 | out_release_lock_seqid: | |
5833 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5834 | out_wait: |
5835 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5836 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5837 | } |
5838 | ||
a5d16a4d TM |
5839 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5840 | { | |
5841 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5842 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5843 | |
3110ff80 | 5844 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5845 | |
14516c3a TM |
5846 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5847 | return; | |
66179efe | 5848 | |
a5d16a4d | 5849 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5850 | switch (task->tk_status) { |
5851 | case 0: | |
2b0143b5 | 5852 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5853 | data->timestamp); |
c69899a1 TM |
5854 | if (data->arg.new_lock) { |
5855 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5856 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5857 | rpc_restart_call_prepare(task); |
5858 | break; | |
5859 | } | |
5860 | } | |
39071e6f TM |
5861 | if (data->arg.new_lock_owner != 0) { |
5862 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5863 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5864 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5865 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5866 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5867 | break; |
5868 | case -NFS4ERR_BAD_STATEID: | |
5869 | case -NFS4ERR_OLD_STATEID: | |
5870 | case -NFS4ERR_STALE_STATEID: | |
5871 | case -NFS4ERR_EXPIRED: | |
5872 | if (data->arg.new_lock_owner != 0) { | |
5873 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5874 | &lsp->ls_state->open_stateid)) | |
5875 | rpc_restart_call_prepare(task); | |
5876 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5877 | &lsp->ls_stateid)) | |
5878 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5879 | } |
3110ff80 | 5880 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5881 | } |
5882 | ||
5883 | static void nfs4_lock_release(void *calldata) | |
5884 | { | |
5885 | struct nfs4_lockdata *data = calldata; | |
5886 | ||
3110ff80 | 5887 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5888 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5889 | if (data->cancelled != 0) { |
5890 | struct rpc_task *task; | |
5891 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5892 | data->arg.lock_seqid); | |
5893 | if (!IS_ERR(task)) | |
bf294b41 | 5894 | rpc_put_task_async(task); |
3110ff80 | 5895 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5896 | } else |
5897 | nfs_free_seqid(data->arg.lock_seqid); | |
5898 | nfs4_put_lock_state(data->lsp); | |
5899 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5900 | fput(data->fl.fl_file); |
a5d16a4d | 5901 | kfree(data); |
3110ff80 | 5902 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5903 | } |
5904 | ||
5905 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5906 | .rpc_call_prepare = nfs4_lock_prepare, | |
5907 | .rpc_call_done = nfs4_lock_done, | |
5908 | .rpc_release = nfs4_lock_release, | |
5909 | }; | |
5910 | ||
2bee72a6 TM |
5911 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5912 | { | |
2bee72a6 TM |
5913 | switch (error) { |
5914 | case -NFS4ERR_ADMIN_REVOKED: | |
5915 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5916 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5917 | if (new_lock_owner != 0 || |
795a88c9 | 5918 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5919 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5920 | break; |
5921 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5922 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5923 | case -NFS4ERR_EXPIRED: |
5924 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5925 | }; |
5926 | } | |
5927 | ||
afe6c27c | 5928 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5929 | { |
5930 | struct nfs4_lockdata *data; | |
5931 | struct rpc_task *task; | |
5138fde0 TM |
5932 | struct rpc_message msg = { |
5933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5934 | .rpc_cred = state->owner->so_cred, | |
5935 | }; | |
c970aa85 TM |
5936 | struct rpc_task_setup task_setup_data = { |
5937 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5938 | .rpc_message = &msg, |
c970aa85 | 5939 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5940 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5941 | .flags = RPC_TASK_ASYNC, |
5942 | }; | |
a5d16a4d TM |
5943 | int ret; |
5944 | ||
3110ff80 | 5945 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5946 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5947 | fl->fl_u.nfs4_fl.owner, |
5948 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5949 | if (data == NULL) |
5950 | return -ENOMEM; | |
5951 | if (IS_SETLKW(cmd)) | |
5952 | data->arg.block = 1; | |
a9c92d6b | 5953 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5954 | msg.rpc_argp = &data->arg; |
5955 | msg.rpc_resp = &data->res; | |
c970aa85 | 5956 | task_setup_data.callback_data = data; |
8fe72bac TM |
5957 | if (recovery_type > NFS_LOCK_NEW) { |
5958 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5959 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5960 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5961 | } else |
5962 | data->arg.new_lock = 1; | |
c970aa85 | 5963 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5964 | if (IS_ERR(task)) |
a5d16a4d | 5965 | return PTR_ERR(task); |
a5d16a4d TM |
5966 | ret = nfs4_wait_for_completion_rpc_task(task); |
5967 | if (ret == 0) { | |
5968 | ret = data->rpc_status; | |
2bee72a6 TM |
5969 | if (ret) |
5970 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5971 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5972 | } else |
5973 | data->cancelled = 1; | |
e6b3c4db | 5974 | rpc_put_task(task); |
3110ff80 | 5975 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
48c9579a | 5976 | trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret); |
a5d16a4d | 5977 | return ret; |
1da177e4 LT |
5978 | } |
5979 | ||
5980 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5981 | { | |
202b50dc | 5982 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5983 | struct nfs4_exception exception = { |
5984 | .inode = state->inode, | |
5985 | }; | |
202b50dc TM |
5986 | int err; |
5987 | ||
5988 | do { | |
42a2d13e TM |
5989 | /* Cache the lock if possible... */ |
5990 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5991 | return 0; | |
afe6c27c | 5992 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5993 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5994 | break; |
5995 | nfs4_handle_exception(server, err, &exception); | |
5996 | } while (exception.retry); | |
5997 | return err; | |
1da177e4 LT |
5998 | } |
5999 | ||
6000 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6001 | { | |
202b50dc | 6002 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
6003 | struct nfs4_exception exception = { |
6004 | .inode = state->inode, | |
6005 | }; | |
202b50dc TM |
6006 | int err; |
6007 | ||
6bfc93ef TM |
6008 | err = nfs4_set_lock_state(state, request); |
6009 | if (err != 0) | |
6010 | return err; | |
f6de7a39 | 6011 | if (!recover_lost_locks) { |
ef1820f9 N |
6012 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
6013 | return 0; | |
6014 | } | |
202b50dc | 6015 | do { |
42a2d13e TM |
6016 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
6017 | return 0; | |
afe6c27c | 6018 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
6019 | switch (err) { |
6020 | default: | |
6021 | goto out; | |
6022 | case -NFS4ERR_GRACE: | |
6023 | case -NFS4ERR_DELAY: | |
6024 | nfs4_handle_exception(server, err, &exception); | |
6025 | err = 0; | |
6026 | } | |
202b50dc | 6027 | } while (exception.retry); |
a9ed2e25 | 6028 | out: |
202b50dc | 6029 | return err; |
1da177e4 LT |
6030 | } |
6031 | ||
f062eb6c | 6032 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
6033 | /** |
6034 | * nfs41_check_expired_locks - possibly free a lock stateid | |
6035 | * | |
6036 | * @state: NFSv4 state for an inode | |
6037 | * | |
6038 | * Returns NFS_OK if recovery for this stateid is now finished. | |
6039 | * Otherwise a negative NFS4ERR value is returned. | |
6040 | */ | |
b01dd1d8 | 6041 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 6042 | { |
eb64cf96 | 6043 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 6044 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
6045 | struct nfs_server *server = NFS_SERVER(state->inode); |
6046 | ||
b01dd1d8 | 6047 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 6048 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
6049 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
6050 | ||
6051 | status = nfs41_test_stateid(server, | |
6052 | &lsp->ls_stateid, | |
6053 | cred); | |
08cb47fa | 6054 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 6055 | if (status != NFS_OK) { |
3e60ffdd CL |
6056 | /* Free the stateid unless the server |
6057 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
6058 | if (status != -NFS4ERR_BAD_STATEID) |
6059 | nfs41_free_stateid(server, | |
ab7cb0df TM |
6060 | &lsp->ls_stateid, |
6061 | cred); | |
795a88c9 | 6062 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
6063 | ret = status; |
6064 | } | |
6065 | } | |
6066 | }; | |
6067 | ||
6068 | return ret; | |
6069 | } | |
6070 | ||
6071 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6072 | { | |
6073 | int status = NFS_OK; | |
6074 | ||
6075 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
6076 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
6077 | if (status != NFS_OK) |
6078 | status = nfs4_lock_expired(state, request); | |
6079 | return status; | |
f062eb6c BS |
6080 | } |
6081 | #endif | |
6082 | ||
1da177e4 LT |
6083 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6084 | { | |
19e03c57 | 6085 | struct nfs_inode *nfsi = NFS_I(state->inode); |
11476e9d | 6086 | struct nfs4_state_owner *sp = state->owner; |
01c3b861 | 6087 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6088 | int status = -ENOLCK; |
1da177e4 | 6089 | |
8e469ebd TM |
6090 | if ((fl_flags & FL_POSIX) && |
6091 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6092 | goto out; | |
6bfc93ef | 6093 | /* Is this a delegated open? */ |
6bfc93ef TM |
6094 | status = nfs4_set_lock_state(state, request); |
6095 | if (status != 0) | |
6096 | goto out; | |
01c3b861 | 6097 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6098 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6099 | if (status < 0) |
6100 | goto out; | |
11476e9d | 6101 | mutex_lock(&sp->so_delegreturn_mutex); |
19e03c57 | 6102 | down_read(&nfsi->rwsem); |
01c3b861 | 6103 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6104 | /* Yes: cache locks! */ |
01c3b861 | 6105 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6106 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6107 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6108 | up_read(&nfsi->rwsem); |
11476e9d | 6109 | mutex_unlock(&sp->so_delegreturn_mutex); |
9a99af49 | 6110 | goto out; |
9a99af49 | 6111 | } |
19e03c57 | 6112 | up_read(&nfsi->rwsem); |
11476e9d | 6113 | mutex_unlock(&sp->so_delegreturn_mutex); |
c69899a1 | 6114 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6115 | out: |
6116 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6117 | return status; |
6118 | } | |
6119 | ||
6120 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6121 | { | |
a1d0b5ee TM |
6122 | struct nfs4_exception exception = { |
6123 | .state = state, | |
05ffe24f | 6124 | .inode = state->inode, |
a1d0b5ee | 6125 | }; |
1da177e4 LT |
6126 | int err; |
6127 | ||
6128 | do { | |
965b5d67 TM |
6129 | err = _nfs4_proc_setlk(state, cmd, request); |
6130 | if (err == -NFS4ERR_DENIED) | |
6131 | err = -EAGAIN; | |
1da177e4 | 6132 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6133 | err, &exception); |
1da177e4 LT |
6134 | } while (exception.retry); |
6135 | return err; | |
6136 | } | |
6137 | ||
6138 | static int | |
6139 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6140 | { | |
6141 | struct nfs_open_context *ctx; | |
6142 | struct nfs4_state *state; | |
6143 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6144 | int status; | |
6145 | ||
6146 | /* verify open state */ | |
cd3758e3 | 6147 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6148 | state = ctx->state; |
6149 | ||
6150 | if (request->fl_start < 0 || request->fl_end < 0) | |
6151 | return -EINVAL; | |
6152 | ||
d953126a TM |
6153 | if (IS_GETLK(cmd)) { |
6154 | if (state != NULL) | |
6155 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6156 | return 0; | |
6157 | } | |
1da177e4 LT |
6158 | |
6159 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6160 | return -EINVAL; | |
6161 | ||
d953126a TM |
6162 | if (request->fl_type == F_UNLCK) { |
6163 | if (state != NULL) | |
6164 | return nfs4_proc_unlck(state, cmd, request); | |
6165 | return 0; | |
6166 | } | |
1da177e4 | 6167 | |
d953126a TM |
6168 | if (state == NULL) |
6169 | return -ENOLCK; | |
55725513 TM |
6170 | /* |
6171 | * Don't rely on the VFS having checked the file open mode, | |
6172 | * since it won't do this for flock() locks. | |
6173 | */ | |
f44106e2 | 6174 | switch (request->fl_type) { |
55725513 TM |
6175 | case F_RDLCK: |
6176 | if (!(filp->f_mode & FMODE_READ)) | |
6177 | return -EBADF; | |
6178 | break; | |
6179 | case F_WRLCK: | |
6180 | if (!(filp->f_mode & FMODE_WRITE)) | |
6181 | return -EBADF; | |
6182 | } | |
6183 | ||
1da177e4 LT |
6184 | do { |
6185 | status = nfs4_proc_setlk(state, cmd, request); | |
6186 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6187 | break; | |
6188 | timeout = nfs4_set_lock_task_retry(timeout); | |
6189 | status = -ERESTARTSYS; | |
6190 | if (signalled()) | |
6191 | break; | |
6192 | } while(status < 0); | |
1da177e4 LT |
6193 | return status; |
6194 | } | |
6195 | ||
db4f2e63 | 6196 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6197 | { |
6198 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6199 | int err; |
6200 | ||
6201 | err = nfs4_set_lock_state(state, fl); | |
6202 | if (err != 0) | |
db4f2e63 | 6203 | return err; |
4a706fa0 | 6204 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6205 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6206 | } |
6b3b5496 | 6207 | |
cf470c3e TM |
6208 | struct nfs_release_lockowner_data { |
6209 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6210 | struct nfs_server *server; |
cf470c3e | 6211 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6212 | struct nfs_release_lockowner_res res; |
60ea6812 | 6213 | unsigned long timestamp; |
cf470c3e TM |
6214 | }; |
6215 | ||
fbd4bfd1 CL |
6216 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6217 | { | |
6218 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6219 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6220 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6221 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6222 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6223 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6224 | } |
6225 | ||
6226 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6227 | { | |
6228 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6229 | struct nfs_server *server = data->server; |
6230 | ||
b7e63a10 | 6231 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6232 | |
6233 | switch (task->tk_status) { | |
6234 | case 0: | |
6235 | renew_lease(server, data->timestamp); | |
6236 | break; | |
6237 | case -NFS4ERR_STALE_CLIENTID: | |
6238 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6239 | nfs4_schedule_lease_recovery(server->nfs_client); |
6240 | break; | |
60ea6812 CL |
6241 | case -NFS4ERR_LEASE_MOVED: |
6242 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6243 | if (nfs4_async_handle_error(task, server, |
6244 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6245 | rpc_restart_call_prepare(task); |
6246 | } | |
fbd4bfd1 CL |
6247 | } |
6248 | ||
d3c7b7cc TM |
6249 | static void nfs4_release_lockowner_release(void *calldata) |
6250 | { | |
cf470c3e | 6251 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6252 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6253 | kfree(calldata); |
6254 | } | |
6255 | ||
17280175 | 6256 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6257 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6258 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6259 | .rpc_release = nfs4_release_lockowner_release, |
6260 | }; | |
6261 | ||
f1cdae87 JL |
6262 | static void |
6263 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6264 | { |
cf470c3e | 6265 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6266 | struct rpc_message msg = { |
6267 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6268 | }; | |
6269 | ||
6270 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6271 | return; |
fbd4bfd1 | 6272 | |
cf470c3e TM |
6273 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6274 | if (!data) | |
f1cdae87 | 6275 | return; |
cf470c3e | 6276 | data->lsp = lsp; |
5ae67c4f | 6277 | data->server = server; |
cf470c3e TM |
6278 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6279 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6280 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6281 | |
cf470c3e | 6282 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6283 | msg.rpc_resp = &data->res; |
6284 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6285 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6286 | } |
6287 | ||
aa1870af BF |
6288 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6289 | ||
d9a82a04 | 6290 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
59301226 AV |
6291 | struct dentry *unused, struct inode *inode, |
6292 | const char *key, const void *buf, | |
6293 | size_t buflen, int flags) | |
6b3b5496 | 6294 | { |
59301226 | 6295 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
6296 | } |
6297 | ||
d9a82a04 | 6298 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
b296821a AV |
6299 | struct dentry *unused, struct inode *inode, |
6300 | const char *key, void *buf, size_t buflen) | |
6b3b5496 | 6301 | { |
b296821a | 6302 | return nfs4_proc_get_acl(inode, buf, buflen); |
6b3b5496 BF |
6303 | } |
6304 | ||
764a5c6b | 6305 | static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry) |
6b3b5496 | 6306 | { |
764a5c6b | 6307 | return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry))); |
6b3b5496 BF |
6308 | } |
6309 | ||
c9bccef6 | 6310 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
c9bccef6 | 6311 | |
d9a82a04 | 6312 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
59301226 AV |
6313 | struct dentry *unused, struct inode *inode, |
6314 | const char *key, const void *buf, | |
6315 | size_t buflen, int flags) | |
c9bccef6 DQ |
6316 | { |
6317 | if (security_ismaclabel(key)) | |
59301226 | 6318 | return nfs4_set_security_label(inode, buf, buflen); |
c9bccef6 DQ |
6319 | |
6320 | return -EOPNOTSUPP; | |
6321 | } | |
6322 | ||
d9a82a04 | 6323 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
b296821a AV |
6324 | struct dentry *unused, struct inode *inode, |
6325 | const char *key, void *buf, size_t buflen) | |
c9bccef6 DQ |
6326 | { |
6327 | if (security_ismaclabel(key)) | |
b296821a | 6328 | return nfs4_get_security_label(inode, buf, buflen); |
c9bccef6 DQ |
6329 | return -EOPNOTSUPP; |
6330 | } | |
6331 | ||
c4803c49 AG |
6332 | static ssize_t |
6333 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
c9bccef6 | 6334 | { |
c4803c49 | 6335 | int len = 0; |
c9bccef6 | 6336 | |
c4803c49 AG |
6337 | if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) { |
6338 | len = security_inode_listsecurity(inode, list, list_len); | |
6339 | if (list_len && len > list_len) | |
6340 | return -ERANGE; | |
c9bccef6 DQ |
6341 | } |
6342 | return len; | |
6343 | } | |
6344 | ||
6345 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6346 | .prefix = XATTR_SECURITY_PREFIX, | |
c9bccef6 DQ |
6347 | .get = nfs4_xattr_get_nfs4_label, |
6348 | .set = nfs4_xattr_set_nfs4_label, | |
6349 | }; | |
c9bccef6 | 6350 | |
c4803c49 AG |
6351 | #else |
6352 | ||
6353 | static ssize_t | |
6354 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
6355 | { | |
6356 | return 0; | |
6357 | } | |
6358 | ||
6359 | #endif | |
c9bccef6 | 6360 | |
533eb461 AA |
6361 | /* |
6362 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6363 | */ | |
69aaaae1 TM |
6364 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6365 | { | |
533eb461 AA |
6366 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6367 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6368 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6369 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6370 | return; |
6371 | ||
6372 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6373 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6374 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6375 | fattr->nlink = 2; | |
6376 | } | |
6377 | ||
f05d147f BS |
6378 | static 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) | |
683b57b4 TM |
6382 | { |
6383 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6384 | u32 bitmask[3] = { |
361e624f | 6385 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6386 | }; |
6387 | struct nfs4_fs_locations_arg args = { | |
6388 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6389 | .name = name, |
683b57b4 TM |
6390 | .page = page, |
6391 | .bitmask = bitmask, | |
6392 | }; | |
22958463 BH |
6393 | struct nfs4_fs_locations_res res = { |
6394 | .fs_locations = fs_locations, | |
6395 | }; | |
683b57b4 TM |
6396 | struct rpc_message msg = { |
6397 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6398 | .rpc_argp = &args, | |
22958463 | 6399 | .rpc_resp = &res, |
683b57b4 TM |
6400 | }; |
6401 | int status; | |
6402 | ||
3110ff80 | 6403 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6404 | |
6405 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6406 | * is not supported */ | |
6407 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6408 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6409 | else | |
6410 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6411 | ||
c228fd3a | 6412 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6413 | fs_locations->server = server; |
830b8e33 | 6414 | fs_locations->nlocations = 0; |
f05d147f | 6415 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6416 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6417 | return status; |
6418 | } | |
6419 | ||
f05d147f BS |
6420 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6421 | const struct qstr *name, | |
6422 | struct nfs4_fs_locations *fs_locations, | |
6423 | struct page *page) | |
db0a9593 BS |
6424 | { |
6425 | struct nfs4_exception exception = { }; | |
6426 | int err; | |
6427 | do { | |
078ea3df TM |
6428 | err = _nfs4_proc_fs_locations(client, dir, name, |
6429 | fs_locations, page); | |
6430 | trace_nfs4_get_fs_locations(dir, name, err); | |
6431 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6432 | &exception); |
6433 | } while (exception.retry); | |
6434 | return err; | |
6435 | } | |
6436 | ||
b03d735b CL |
6437 | /* |
6438 | * This operation also signals the server that this client is | |
6439 | * performing migration recovery. The server can stop returning | |
6440 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6441 | * appended to this compound to identify the client ID which is | |
6442 | * performing recovery. | |
6443 | */ | |
6444 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6445 | struct nfs4_fs_locations *locations, | |
6446 | struct page *page, struct rpc_cred *cred) | |
6447 | { | |
6448 | struct nfs_server *server = NFS_SERVER(inode); | |
6449 | struct rpc_clnt *clnt = server->client; | |
6450 | u32 bitmask[2] = { | |
6451 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6452 | }; | |
6453 | struct nfs4_fs_locations_arg args = { | |
6454 | .clientid = server->nfs_client->cl_clientid, | |
6455 | .fh = NFS_FH(inode), | |
6456 | .page = page, | |
6457 | .bitmask = bitmask, | |
6458 | .migration = 1, /* skip LOOKUP */ | |
6459 | .renew = 1, /* append RENEW */ | |
6460 | }; | |
6461 | struct nfs4_fs_locations_res res = { | |
6462 | .fs_locations = locations, | |
6463 | .migration = 1, | |
6464 | .renew = 1, | |
6465 | }; | |
6466 | struct rpc_message msg = { | |
6467 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6468 | .rpc_argp = &args, | |
6469 | .rpc_resp = &res, | |
6470 | .rpc_cred = cred, | |
6471 | }; | |
6472 | unsigned long now = jiffies; | |
6473 | int status; | |
6474 | ||
6475 | nfs_fattr_init(&locations->fattr); | |
6476 | locations->server = server; | |
6477 | locations->nlocations = 0; | |
6478 | ||
6479 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6480 | nfs4_set_sequence_privileged(&args.seq_args); | |
6481 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6482 | &args.seq_args, &res.seq_res); | |
6483 | if (status) | |
6484 | return status; | |
6485 | ||
6486 | renew_lease(server, now); | |
6487 | return 0; | |
6488 | } | |
6489 | ||
6490 | #ifdef CONFIG_NFS_V4_1 | |
6491 | ||
6492 | /* | |
6493 | * This operation also signals the server that this client is | |
6494 | * performing migration recovery. The server can stop asserting | |
6495 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6496 | * performing this operation is identified in the SEQUENCE | |
6497 | * operation in this compound. | |
6498 | * | |
6499 | * When the client supports GETATTR(fs_locations_info), it can | |
6500 | * be plumbed in here. | |
6501 | */ | |
6502 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6503 | struct nfs4_fs_locations *locations, | |
6504 | struct page *page, struct rpc_cred *cred) | |
6505 | { | |
6506 | struct nfs_server *server = NFS_SERVER(inode); | |
6507 | struct rpc_clnt *clnt = server->client; | |
6508 | u32 bitmask[2] = { | |
6509 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6510 | }; | |
6511 | struct nfs4_fs_locations_arg args = { | |
6512 | .fh = NFS_FH(inode), | |
6513 | .page = page, | |
6514 | .bitmask = bitmask, | |
6515 | .migration = 1, /* skip LOOKUP */ | |
6516 | }; | |
6517 | struct nfs4_fs_locations_res res = { | |
6518 | .fs_locations = locations, | |
6519 | .migration = 1, | |
6520 | }; | |
6521 | struct rpc_message msg = { | |
6522 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6523 | .rpc_argp = &args, | |
6524 | .rpc_resp = &res, | |
6525 | .rpc_cred = cred, | |
6526 | }; | |
6527 | int status; | |
6528 | ||
6529 | nfs_fattr_init(&locations->fattr); | |
6530 | locations->server = server; | |
6531 | locations->nlocations = 0; | |
6532 | ||
6533 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6534 | nfs4_set_sequence_privileged(&args.seq_args); | |
6535 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6536 | &args.seq_args, &res.seq_res); | |
6537 | if (status == NFS4_OK && | |
6538 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6539 | status = -NFS4ERR_LEASE_MOVED; | |
6540 | return status; | |
6541 | } | |
6542 | ||
6543 | #endif /* CONFIG_NFS_V4_1 */ | |
6544 | ||
6545 | /** | |
6546 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6547 | * @inode: inode on FSID that is migrating | |
6548 | * @locations: result of query | |
6549 | * @page: buffer | |
6550 | * @cred: credential to use for this operation | |
6551 | * | |
6552 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6553 | * operation failed, or a negative errno if a local error occurred. | |
6554 | * | |
6555 | * On success, "locations" is filled in, but if the server has | |
6556 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6557 | * asserted. | |
6558 | * | |
6559 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6560 | * from this client that require migration recovery. | |
6561 | */ | |
6562 | int nfs4_proc_get_locations(struct inode *inode, | |
6563 | struct nfs4_fs_locations *locations, | |
6564 | struct page *page, struct rpc_cred *cred) | |
6565 | { | |
6566 | struct nfs_server *server = NFS_SERVER(inode); | |
6567 | struct nfs_client *clp = server->nfs_client; | |
6568 | const struct nfs4_mig_recovery_ops *ops = | |
6569 | clp->cl_mvops->mig_recovery_ops; | |
6570 | struct nfs4_exception exception = { }; | |
6571 | int status; | |
6572 | ||
6573 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6574 | (unsigned long long)server->fsid.major, | |
6575 | (unsigned long long)server->fsid.minor, | |
6576 | clp->cl_hostname); | |
6577 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6578 | ||
6579 | do { | |
6580 | status = ops->get_locations(inode, locations, page, cred); | |
6581 | if (status != -NFS4ERR_DELAY) | |
6582 | break; | |
6583 | nfs4_handle_exception(server, status, &exception); | |
6584 | } while (exception.retry); | |
6585 | return status; | |
6586 | } | |
6587 | ||
44c99933 CL |
6588 | /* |
6589 | * This operation also signals the server that this client is | |
6590 | * performing "lease moved" recovery. The server can stop | |
6591 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6592 | * is appended to this compound to identify the client ID which is | |
6593 | * performing recovery. | |
6594 | */ | |
6595 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6596 | { | |
6597 | struct nfs_server *server = NFS_SERVER(inode); | |
6598 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6599 | struct rpc_clnt *clnt = server->client; | |
6600 | struct nfs4_fsid_present_arg args = { | |
6601 | .fh = NFS_FH(inode), | |
6602 | .clientid = clp->cl_clientid, | |
6603 | .renew = 1, /* append RENEW */ | |
6604 | }; | |
6605 | struct nfs4_fsid_present_res res = { | |
6606 | .renew = 1, | |
6607 | }; | |
6608 | struct rpc_message msg = { | |
6609 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6610 | .rpc_argp = &args, | |
6611 | .rpc_resp = &res, | |
6612 | .rpc_cred = cred, | |
6613 | }; | |
6614 | unsigned long now = jiffies; | |
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) | |
6627 | return status; | |
6628 | ||
6629 | do_renew_lease(clp, now); | |
6630 | return 0; | |
6631 | } | |
6632 | ||
6633 | #ifdef CONFIG_NFS_V4_1 | |
6634 | ||
6635 | /* | |
6636 | * This operation also signals the server that this client is | |
6637 | * performing "lease moved" recovery. The server can stop asserting | |
6638 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6639 | * this operation is identified in the SEQUENCE operation in this | |
6640 | * compound. | |
6641 | */ | |
6642 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6643 | { | |
6644 | struct nfs_server *server = NFS_SERVER(inode); | |
6645 | struct rpc_clnt *clnt = server->client; | |
6646 | struct nfs4_fsid_present_arg args = { | |
6647 | .fh = NFS_FH(inode), | |
6648 | }; | |
6649 | struct nfs4_fsid_present_res res = { | |
6650 | }; | |
6651 | struct rpc_message msg = { | |
6652 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6653 | .rpc_argp = &args, | |
6654 | .rpc_resp = &res, | |
6655 | .rpc_cred = cred, | |
6656 | }; | |
6657 | int status; | |
6658 | ||
6659 | res.fh = nfs_alloc_fhandle(); | |
6660 | if (res.fh == NULL) | |
6661 | return -ENOMEM; | |
6662 | ||
6663 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6664 | nfs4_set_sequence_privileged(&args.seq_args); | |
6665 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6666 | &args.seq_args, &res.seq_res); | |
6667 | nfs_free_fhandle(res.fh); | |
6668 | if (status == NFS4_OK && | |
6669 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6670 | status = -NFS4ERR_LEASE_MOVED; | |
6671 | return status; | |
6672 | } | |
6673 | ||
6674 | #endif /* CONFIG_NFS_V4_1 */ | |
6675 | ||
6676 | /** | |
6677 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6678 | * @inode: inode on FSID to check | |
6679 | * @cred: credential to use for this operation | |
6680 | * | |
6681 | * Server indicates whether the FSID is present, moved, or not | |
6682 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6683 | * condition for this client ID. | |
6684 | * | |
6685 | * Returns NFS4_OK if the FSID is present on this server, | |
6686 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6687 | * NFS4ERR code if some error occurred on the server, or a | |
6688 | * negative errno if a local failure occurred. | |
6689 | */ | |
6690 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6691 | { | |
6692 | struct nfs_server *server = NFS_SERVER(inode); | |
6693 | struct nfs_client *clp = server->nfs_client; | |
6694 | const struct nfs4_mig_recovery_ops *ops = | |
6695 | clp->cl_mvops->mig_recovery_ops; | |
6696 | struct nfs4_exception exception = { }; | |
6697 | int status; | |
6698 | ||
6699 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6700 | (unsigned long long)server->fsid.major, | |
6701 | (unsigned long long)server->fsid.minor, | |
6702 | clp->cl_hostname); | |
6703 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6704 | ||
6705 | do { | |
6706 | status = ops->fsid_present(inode, cred); | |
6707 | if (status != -NFS4ERR_DELAY) | |
6708 | break; | |
6709 | nfs4_handle_exception(server, status, &exception); | |
6710 | } while (exception.retry); | |
6711 | return status; | |
6712 | } | |
6713 | ||
5ec16a85 | 6714 | /** |
a5250def WAA |
6715 | * If 'use_integrity' is true and the state managment nfs_client |
6716 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6717 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6718 | * Considerations sections. Otherwise, just use the user cred with the | |
6719 | * filesystem's rpc_client. | |
5ec16a85 | 6720 | */ |
a5250def | 6721 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6722 | { |
6723 | int status; | |
6724 | struct nfs4_secinfo_arg args = { | |
6725 | .dir_fh = NFS_FH(dir), | |
6726 | .name = name, | |
6727 | }; | |
6728 | struct nfs4_secinfo_res res = { | |
6729 | .flavors = flavors, | |
6730 | }; | |
6731 | struct rpc_message msg = { | |
6732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6733 | .rpc_argp = &args, | |
6734 | .rpc_resp = &res, | |
6735 | }; | |
a5250def | 6736 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6737 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6738 | |
6739 | if (use_integrity) { | |
6740 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6741 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6742 | msg.rpc_cred = cred; | |
a5250def | 6743 | } |
5a5ea0d4 BS |
6744 | |
6745 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6746 | |
6747 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6748 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6749 | ||
a5250def WAA |
6750 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6751 | &res.seq_res, 0); | |
5a5ea0d4 | 6752 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6753 | |
7cb852df WAA |
6754 | if (cred) |
6755 | put_rpccred(cred); | |
a5250def | 6756 | |
5a5ea0d4 BS |
6757 | return status; |
6758 | } | |
6759 | ||
72de53ec BS |
6760 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6761 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6762 | { |
6763 | struct nfs4_exception exception = { }; | |
6764 | int err; | |
6765 | do { | |
a5250def WAA |
6766 | err = -NFS4ERR_WRONGSEC; |
6767 | ||
6768 | /* try to use integrity protection with machine cred */ | |
6769 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6770 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6771 | ||
6772 | /* | |
6773 | * if unable to use integrity protection, or SECINFO with | |
6774 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6775 | * disallowed by spec, but exists in deployed servers) use | |
6776 | * the current filesystem's rpc_client and the user cred. | |
6777 | */ | |
6778 | if (err == -NFS4ERR_WRONGSEC) | |
6779 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6780 | ||
078ea3df TM |
6781 | trace_nfs4_secinfo(dir, name, err); |
6782 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6783 | &exception); |
6784 | } while (exception.retry); | |
6785 | return err; | |
6786 | } | |
6787 | ||
557134a3 | 6788 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6789 | /* |
6790 | * Check the exchange flags returned by the server for invalid flags, having | |
6791 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6792 | * DS flags set. | |
6793 | */ | |
6794 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6795 | { | |
6796 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6797 | goto out_inval; | |
6798 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6799 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6800 | goto out_inval; | |
6801 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6802 | goto out_inval; | |
6803 | return NFS_OK; | |
6804 | out_inval: | |
6805 | return -NFS4ERR_INVAL; | |
6806 | } | |
6807 | ||
78fe0f41 | 6808 | static bool |
79d4e1f0 CL |
6809 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6810 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6811 | { |
6812 | if (a->server_scope_sz == b->server_scope_sz && | |
6813 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6814 | return true; | |
6815 | ||
6816 | return false; | |
6817 | } | |
6818 | ||
02a95dee AA |
6819 | static void |
6820 | nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata) | |
6821 | { | |
6822 | } | |
6823 | ||
6824 | static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = { | |
6825 | .rpc_call_done = &nfs4_bind_one_conn_to_session_done, | |
6826 | }; | |
6827 | ||
7c44f1ae | 6828 | /* |
d9ddbf5d | 6829 | * nfs4_proc_bind_one_conn_to_session() |
7c44f1ae WAA |
6830 | * |
6831 | * The 4.1 client currently uses the same TCP connection for the | |
6832 | * fore and backchannel. | |
6833 | */ | |
d9ddbf5d TM |
6834 | static |
6835 | int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt, | |
6836 | struct rpc_xprt *xprt, | |
6837 | struct nfs_client *clp, | |
6838 | struct rpc_cred *cred) | |
7c44f1ae WAA |
6839 | { |
6840 | int status; | |
71a097c6 TM |
6841 | struct nfs41_bind_conn_to_session_args args = { |
6842 | .client = clp, | |
6843 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6844 | }; | |
7c44f1ae WAA |
6845 | struct nfs41_bind_conn_to_session_res res; |
6846 | struct rpc_message msg = { | |
6847 | .rpc_proc = | |
6848 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6849 | .rpc_argp = &args, |
7c44f1ae | 6850 | .rpc_resp = &res, |
2cf047c9 | 6851 | .rpc_cred = cred, |
7c44f1ae | 6852 | }; |
d9ddbf5d TM |
6853 | struct rpc_task_setup task_setup_data = { |
6854 | .rpc_client = clnt, | |
6855 | .rpc_xprt = xprt, | |
02a95dee | 6856 | .callback_ops = &nfs4_bind_one_conn_to_session_ops, |
d9ddbf5d TM |
6857 | .rpc_message = &msg, |
6858 | .flags = RPC_TASK_TIMEOUT, | |
6859 | }; | |
6860 | struct rpc_task *task; | |
7c44f1ae WAA |
6861 | |
6862 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6863 | |
71a097c6 TM |
6864 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6865 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6866 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae | 6867 | |
d9ddbf5d TM |
6868 | /* Do not set the backchannel flag unless this is clnt->cl_xprt */ |
6869 | if (xprt != rcu_access_pointer(clnt->cl_xprt)) | |
6870 | args.dir = NFS4_CDFC4_FORE; | |
6871 | ||
6872 | task = rpc_run_task(&task_setup_data); | |
6873 | if (!IS_ERR(task)) { | |
6874 | status = task->tk_status; | |
6875 | rpc_put_task(task); | |
6876 | } else | |
6877 | status = PTR_ERR(task); | |
c6d01c6f | 6878 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6879 | if (status == 0) { |
71a097c6 | 6880 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6881 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6882 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6883 | status = -EIO; | |
71a097c6 | 6884 | goto out; |
7c44f1ae | 6885 | } |
71a097c6 | 6886 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6887 | dprintk("NFS: %s: Unexpected direction from server\n", |
6888 | __func__); | |
6889 | status = -EIO; | |
71a097c6 | 6890 | goto out; |
7c44f1ae | 6891 | } |
71a097c6 | 6892 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6893 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6894 | __func__); | |
6895 | status = -EIO; | |
71a097c6 | 6896 | goto out; |
7c44f1ae WAA |
6897 | } |
6898 | } | |
7c44f1ae WAA |
6899 | out: |
6900 | dprintk("<-- %s status= %d\n", __func__, status); | |
6901 | return status; | |
6902 | } | |
6903 | ||
d9ddbf5d TM |
6904 | struct rpc_bind_conn_calldata { |
6905 | struct nfs_client *clp; | |
6906 | struct rpc_cred *cred; | |
6907 | }; | |
6908 | ||
6909 | static int | |
6910 | nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt, | |
6911 | struct rpc_xprt *xprt, | |
6912 | void *calldata) | |
6913 | { | |
6914 | struct rpc_bind_conn_calldata *p = calldata; | |
6915 | ||
6916 | return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred); | |
6917 | } | |
6918 | ||
6919 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) | |
6920 | { | |
6921 | struct rpc_bind_conn_calldata data = { | |
6922 | .clp = clp, | |
6923 | .cred = cred, | |
6924 | }; | |
6925 | return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient, | |
6926 | nfs4_proc_bind_conn_to_session_callback, &data); | |
6927 | } | |
6928 | ||
99fe60d0 | 6929 | /* |
fa940720 WAA |
6930 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6931 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6932 | */ |
6933 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6934 | .how = SP4_MACH_CRED, | |
6935 | .enforce.u.words = { | |
6936 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6937 | 1 << (OP_EXCHANGE_ID - 32) | | |
6938 | 1 << (OP_CREATE_SESSION - 32) | | |
6939 | 1 << (OP_DESTROY_SESSION - 32) | | |
6940 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6941 | }, |
6942 | .allow.u.words = { | |
6943 | [0] = 1 << (OP_CLOSE) | | |
99ade3c7 | 6944 | 1 << (OP_OPEN_DOWNGRADE) | |
a0279625 | 6945 | 1 << (OP_LOCKU) | |
99ade3c7 | 6946 | 1 << (OP_DELEGRETURN) | |
a0279625 | 6947 | 1 << (OP_COMMIT), |
8b5bee2e | 6948 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 | 6949 | 1 << (OP_SECINFO_NO_NAME - 32) | |
99ade3c7 | 6950 | 1 << (OP_LAYOUTRETURN - 32) | |
3787d506 | 6951 | 1 << (OP_TEST_STATEID - 32) | |
a0279625 WAA |
6952 | 1 << (OP_FREE_STATEID - 32) | |
6953 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6954 | } |
6955 | }; | |
6956 | ||
6957 | /* | |
6958 | * Select the state protection mode for client `clp' given the server results | |
6959 | * from exchange_id in `sp'. | |
99fe60d0 | 6960 | * |
2031cd1a WAA |
6961 | * Returns 0 on success, negative errno otherwise. |
6962 | */ | |
6963 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6964 | struct nfs41_state_protection *sp) | |
6965 | { | |
6966 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6967 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6968 | 1 << (OP_EXCHANGE_ID - 32) | | |
6969 | 1 << (OP_CREATE_SESSION - 32) | | |
6970 | 1 << (OP_DESTROY_SESSION - 32) | | |
6971 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6972 | }; | |
6973 | unsigned int i; | |
6974 | ||
6975 | if (sp->how == SP4_MACH_CRED) { | |
6976 | /* Print state protect result */ | |
6977 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6978 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6979 | if (test_bit(i, sp->enforce.u.longs)) | |
6980 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6981 | if (test_bit(i, sp->allow.u.longs)) | |
6982 | dfprintk(MOUNT, " allow op %d\n", i); | |
6983 | } | |
6984 | ||
6985 | /* make sure nothing is on enforce list that isn't supported */ | |
6986 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6987 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6988 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6989 | return -EINVAL; | |
6990 | } | |
6991 | } | |
6992 | ||
6993 | /* | |
6994 | * Minimal mode - state operations are allowed to use machine | |
6995 | * credential. Note this already happens by default, so the | |
6996 | * client doesn't have to do anything more than the negotiation. | |
6997 | * | |
6998 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6999 | * we're already using the machine cred for exchange_id | |
7000 | * and will never use a different cred. | |
7001 | */ | |
7002 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
7003 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
7004 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
7005 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
7006 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
7007 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
7008 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
7009 | } else { | |
7010 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
7011 | return -EINVAL; | |
7012 | } | |
fa940720 WAA |
7013 | |
7014 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
99ade3c7 AE |
7015 | test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) && |
7016 | test_bit(OP_DELEGRETURN, sp->allow.u.longs) && | |
fa940720 WAA |
7017 | test_bit(OP_LOCKU, sp->allow.u.longs)) { |
7018 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
7019 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
7020 | } | |
8b5bee2e | 7021 | |
99ade3c7 AE |
7022 | if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) { |
7023 | dfprintk(MOUNT, " pnfs cleanup mode enabled\n"); | |
7024 | set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
7025 | &clp->cl_sp4_flags); | |
7026 | } | |
7027 | ||
8b5bee2e WAA |
7028 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && |
7029 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
7030 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
7031 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
7032 | } | |
3787d506 WAA |
7033 | |
7034 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
7035 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
7036 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
7037 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
7038 | } | |
8c21c62c WAA |
7039 | |
7040 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
7041 | dfprintk(MOUNT, " write mode enabled\n"); | |
7042 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
7043 | } | |
7044 | ||
7045 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
7046 | dfprintk(MOUNT, " commit mode enabled\n"); | |
7047 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
7048 | } | |
2031cd1a WAA |
7049 | } |
7050 | ||
7051 | return 0; | |
7052 | } | |
7053 | ||
7054 | /* | |
7055 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 7056 | * |
2031cd1a | 7057 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 7058 | */ |
2031cd1a WAA |
7059 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
7060 | u32 sp4_how) | |
99fe60d0 BH |
7061 | { |
7062 | nfs4_verifier verifier; | |
7063 | struct nfs41_exchange_id_args args = { | |
cd93710e | 7064 | .verifier = &verifier, |
99fe60d0 | 7065 | .client = clp, |
cd3fadec | 7066 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 7067 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
7068 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
7069 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
7070 | #else | |
7071 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
7072 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
7073 | #endif | |
99fe60d0 BH |
7074 | }; |
7075 | struct nfs41_exchange_id_res res = { | |
32b01310 | 7076 | 0 |
99fe60d0 BH |
7077 | }; |
7078 | int status; | |
7079 | struct rpc_message msg = { | |
7080 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
7081 | .rpc_argp = &args, | |
7082 | .rpc_resp = &res, | |
7083 | .rpc_cred = cred, | |
7084 | }; | |
99fe60d0 | 7085 | |
f092075d | 7086 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
7087 | |
7088 | status = nfs4_init_uniform_client_string(clp); | |
7089 | if (status) | |
3a6bb738 | 7090 | goto out; |
3a6bb738 JL |
7091 | |
7092 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 7093 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 7094 | clp->cl_owner_id); |
99fe60d0 | 7095 | |
acdeb69d | 7096 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 7097 | GFP_NOFS); |
acdeb69d | 7098 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
7099 | status = -ENOMEM; |
7100 | goto out; | |
7101 | } | |
78fe0f41 | 7102 | |
79d4e1f0 | 7103 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 7104 | GFP_NOFS); |
177313f1 | 7105 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 7106 | status = -ENOMEM; |
acdeb69d | 7107 | goto out_server_owner; |
abe9a6d5 | 7108 | } |
78fe0f41 | 7109 | |
bbafffd2 | 7110 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 7111 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
7112 | status = -ENOMEM; |
7113 | goto out_server_scope; | |
7114 | } | |
7115 | ||
2031cd1a WAA |
7116 | switch (sp4_how) { |
7117 | case SP4_NONE: | |
7118 | args.state_protect.how = SP4_NONE; | |
7119 | break; | |
7120 | ||
7121 | case SP4_MACH_CRED: | |
7122 | args.state_protect = nfs4_sp4_mach_cred_request; | |
7123 | break; | |
7124 | ||
7125 | default: | |
7126 | /* unsupported! */ | |
7127 | WARN_ON_ONCE(1); | |
7128 | status = -EINVAL; | |
6b55970b | 7129 | goto out_impl_id; |
2031cd1a WAA |
7130 | } |
7131 | ||
1bd714f2 | 7132 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7133 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 7134 | if (status == 0) |
32b01310 | 7135 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 7136 | |
2031cd1a WAA |
7137 | if (status == 0) |
7138 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
7139 | ||
acdeb69d | 7140 | if (status == 0) { |
32b01310 | 7141 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
7142 | clp->cl_exchange_flags = res.flags; |
7143 | /* Client ID is not confirmed */ | |
7144 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7145 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7146 | &clp->cl_session->session_state); | |
32b01310 | 7147 | clp->cl_seqid = res.seqid; |
e11259f9 | 7148 | } |
32b01310 | 7149 | |
acdeb69d CL |
7150 | kfree(clp->cl_serverowner); |
7151 | clp->cl_serverowner = res.server_owner; | |
7152 | res.server_owner = NULL; | |
78fe0f41 | 7153 | |
7d2ed9ac | 7154 | /* use the most recent implementation id */ |
59155546 CL |
7155 | kfree(clp->cl_implid); |
7156 | clp->cl_implid = res.impl_id; | |
6b55970b | 7157 | res.impl_id = NULL; |
7d2ed9ac | 7158 | |
177313f1 | 7159 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7160 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7161 | res.server_scope)) { |
7162 | dprintk("%s: server_scope mismatch detected\n", | |
7163 | __func__); | |
7164 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7165 | kfree(clp->cl_serverscope); |
7166 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7167 | } |
7168 | ||
177313f1 | 7169 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7170 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7171 | res.server_scope = NULL; |
abe9a6d5 | 7172 | } |
6b55970b | 7173 | } |
7d2ed9ac | 7174 | |
6b55970b KM |
7175 | out_impl_id: |
7176 | kfree(res.impl_id); | |
7d2ed9ac | 7177 | out_server_scope: |
abe9a6d5 | 7178 | kfree(res.server_scope); |
6b55970b KM |
7179 | out_server_owner: |
7180 | kfree(res.server_owner); | |
abe9a6d5 | 7181 | out: |
177313f1 | 7182 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7183 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7184 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7185 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7186 | clp->cl_implid->date.seconds, |
7187 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7188 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7189 | return status; |
7190 | } | |
7191 | ||
2031cd1a WAA |
7192 | /* |
7193 | * nfs4_proc_exchange_id() | |
7194 | * | |
7195 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7196 | * | |
7197 | * Since the clientid has expired, all compounds using sessions | |
7198 | * associated with the stale clientid will be returning | |
7199 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7200 | * be in some phase of session reset. | |
7201 | * | |
7202 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7203 | */ | |
7204 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7205 | { | |
7206 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7207 | int status; | |
7208 | ||
7209 | /* try SP4_MACH_CRED if krb5i/p */ | |
7210 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7211 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7212 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7213 | if (!status) | |
7214 | return 0; | |
7215 | } | |
7216 | ||
7217 | /* try SP4_NONE */ | |
7218 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7219 | } | |
7220 | ||
66245539 TM |
7221 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7222 | struct rpc_cred *cred) | |
7223 | { | |
7224 | struct rpc_message msg = { | |
7225 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7226 | .rpc_argp = clp, | |
7227 | .rpc_cred = cred, | |
7228 | }; | |
7229 | int status; | |
7230 | ||
7231 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7232 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7233 | if (status) |
02c67525 | 7234 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7235 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7236 | return status; | |
7237 | } | |
7238 | ||
7239 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7240 | struct rpc_cred *cred) | |
7241 | { | |
7242 | unsigned int loop; | |
7243 | int ret; | |
7244 | ||
7245 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7246 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7247 | switch (ret) { | |
7248 | case -NFS4ERR_DELAY: | |
7249 | case -NFS4ERR_CLIENTID_BUSY: | |
7250 | ssleep(1); | |
7251 | break; | |
7252 | default: | |
7253 | return ret; | |
7254 | } | |
7255 | } | |
7256 | return 0; | |
7257 | } | |
7258 | ||
7259 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7260 | { | |
7261 | struct rpc_cred *cred; | |
7262 | int ret = 0; | |
7263 | ||
7264 | if (clp->cl_mvops->minor_version < 1) | |
7265 | goto out; | |
7266 | if (clp->cl_exchange_flags == 0) | |
7267 | goto out; | |
05f4c350 CL |
7268 | if (clp->cl_preserve_clid) |
7269 | goto out; | |
73d8bde5 | 7270 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7271 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7272 | if (cred) | |
7273 | put_rpccred(cred); | |
7274 | switch (ret) { | |
7275 | case 0: | |
7276 | case -NFS4ERR_STALE_CLIENTID: | |
7277 | clp->cl_exchange_flags = 0; | |
7278 | } | |
7279 | out: | |
7280 | return ret; | |
7281 | } | |
7282 | ||
2050f0cc AA |
7283 | struct nfs4_get_lease_time_data { |
7284 | struct nfs4_get_lease_time_args *args; | |
7285 | struct nfs4_get_lease_time_res *res; | |
7286 | struct nfs_client *clp; | |
7287 | }; | |
7288 | ||
7289 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7290 | void *calldata) | |
7291 | { | |
2050f0cc AA |
7292 | struct nfs4_get_lease_time_data *data = |
7293 | (struct nfs4_get_lease_time_data *)calldata; | |
7294 | ||
7295 | dprintk("--> %s\n", __func__); | |
7296 | /* just setup sequence, do not trigger session recovery | |
7297 | since we're invoked within one */ | |
d9afbd1b TM |
7298 | nfs41_setup_sequence(data->clp->cl_session, |
7299 | &data->args->la_seq_args, | |
7300 | &data->res->lr_seq_res, | |
7301 | task); | |
2050f0cc AA |
7302 | dprintk("<-- %s\n", __func__); |
7303 | } | |
7304 | ||
7305 | /* | |
7306 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7307 | * from sequence operation or clientid errors. | |
7308 | */ | |
7309 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7310 | { | |
7311 | struct nfs4_get_lease_time_data *data = | |
7312 | (struct nfs4_get_lease_time_data *)calldata; | |
7313 | ||
7314 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7315 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7316 | return; | |
2050f0cc AA |
7317 | switch (task->tk_status) { |
7318 | case -NFS4ERR_DELAY: | |
7319 | case -NFS4ERR_GRACE: | |
7320 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7321 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7322 | task->tk_status = 0; | |
a8a4ae3a AA |
7323 | /* fall through */ |
7324 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7325 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7326 | return; |
7327 | } | |
2050f0cc AA |
7328 | dprintk("<-- %s\n", __func__); |
7329 | } | |
7330 | ||
17280175 | 7331 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7332 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7333 | .rpc_call_done = nfs4_get_lease_time_done, | |
7334 | }; | |
7335 | ||
7336 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7337 | { | |
7338 | struct rpc_task *task; | |
7339 | struct nfs4_get_lease_time_args args; | |
7340 | struct nfs4_get_lease_time_res res = { | |
7341 | .lr_fsinfo = fsinfo, | |
7342 | }; | |
7343 | struct nfs4_get_lease_time_data data = { | |
7344 | .args = &args, | |
7345 | .res = &res, | |
7346 | .clp = clp, | |
7347 | }; | |
7348 | struct rpc_message msg = { | |
7349 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7350 | .rpc_argp = &args, | |
7351 | .rpc_resp = &res, | |
7352 | }; | |
7353 | struct rpc_task_setup task_setup = { | |
7354 | .rpc_client = clp->cl_rpcclient, | |
7355 | .rpc_message = &msg, | |
7356 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7357 | .callback_data = &data, |
7358 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7359 | }; |
7360 | int status; | |
7361 | ||
a9c92d6b | 7362 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7363 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7364 | dprintk("--> %s\n", __func__); |
7365 | task = rpc_run_task(&task_setup); | |
7366 | ||
7367 | if (IS_ERR(task)) | |
7368 | status = PTR_ERR(task); | |
7369 | else { | |
7370 | status = task->tk_status; | |
7371 | rpc_put_task(task); | |
7372 | } | |
7373 | dprintk("<-- %s return %d\n", __func__, status); | |
7374 | ||
7375 | return status; | |
7376 | } | |
7377 | ||
fc931582 AA |
7378 | /* |
7379 | * Initialize the values to be used by the client in CREATE_SESSION | |
7380 | * If nfs4_init_session set the fore channel request and response sizes, | |
7381 | * use them. | |
7382 | * | |
7383 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7384 | * always set csa_cachethis to FALSE because the current implementation | |
7385 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7386 | */ | |
6b26cc8c CL |
7387 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, |
7388 | struct rpc_clnt *clnt) | |
fc931582 | 7389 | { |
18aad3d5 | 7390 | unsigned int max_rqst_sz, max_resp_sz; |
6b26cc8c | 7391 | unsigned int max_bc_payload = rpc_max_bc_payload(clnt); |
18aad3d5 AA |
7392 | |
7393 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7394 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7395 | |
fc931582 | 7396 | /* Fore channel attributes */ |
18aad3d5 AA |
7397 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7398 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7399 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7400 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7401 | |
7402 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7403 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7404 | __func__, |
7405 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7406 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7407 | |
7408 | /* Back channel attributes */ | |
6b26cc8c CL |
7409 | args->bc_attrs.max_rqst_sz = max_bc_payload; |
7410 | args->bc_attrs.max_resp_sz = max_bc_payload; | |
fc931582 AA |
7411 | args->bc_attrs.max_resp_sz_cached = 0; |
7412 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
f4f58ed1 | 7413 | args->bc_attrs.max_reqs = NFS41_BC_MAX_CALLBACKS; |
fc931582 AA |
7414 | |
7415 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7416 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7417 | __func__, | |
7418 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7419 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7420 | args->bc_attrs.max_reqs); | |
7421 | } | |
7422 | ||
79969dd1 TM |
7423 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7424 | struct nfs41_create_session_res *res) | |
8d35301d | 7425 | { |
43c2e885 | 7426 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7427 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7428 | |
43c2e885 BF |
7429 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7430 | return -EINVAL; | |
7431 | /* | |
7432 | * Our requested max_ops is the minimum we need; we're not | |
7433 | * prepared to break up compounds into smaller pieces than that. | |
7434 | * So, no point even trying to continue if the server won't | |
7435 | * cooperate: | |
7436 | */ | |
7437 | if (rcvd->max_ops < sent->max_ops) | |
7438 | return -EINVAL; | |
7439 | if (rcvd->max_reqs == 0) | |
7440 | return -EINVAL; | |
b4b9a0c1 VG |
7441 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7442 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7443 | return 0; |
8d35301d AA |
7444 | } |
7445 | ||
79969dd1 TM |
7446 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7447 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7448 | { |
7449 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7450 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7451 | |
b1c0df5f TM |
7452 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7453 | goto out; | |
43c2e885 BF |
7454 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7455 | return -EINVAL; | |
7456 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7457 | return -EINVAL; | |
7458 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7459 | return -EINVAL; | |
7460 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7461 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7462 | return -EINVAL; |
b4b9a0c1 | 7463 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7464 | return -EINVAL; |
b1c0df5f | 7465 | out: |
43c2e885 BF |
7466 | return 0; |
7467 | } | |
8d35301d | 7468 | |
8d35301d | 7469 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7470 | struct nfs41_create_session_res *res) |
8d35301d | 7471 | { |
43c2e885 | 7472 | int ret; |
8d35301d | 7473 | |
79969dd1 | 7474 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7475 | if (ret) |
7476 | return ret; | |
79969dd1 TM |
7477 | return nfs4_verify_back_channel_attrs(args, res); |
7478 | } | |
7479 | ||
7480 | static void nfs4_update_session(struct nfs4_session *session, | |
7481 | struct nfs41_create_session_res *res) | |
7482 | { | |
7483 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7484 | /* Mark client id and session as being confirmed */ |
7485 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7486 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7487 | session->flags = res->flags; |
7488 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7489 | if (res->flags & SESSION4_BACK_CHAN) |
7490 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7491 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7492 | } |
7493 | ||
848f5bda TM |
7494 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7495 | struct rpc_cred *cred) | |
fc931582 AA |
7496 | { |
7497 | struct nfs4_session *session = clp->cl_session; | |
7498 | struct nfs41_create_session_args args = { | |
7499 | .client = clp, | |
79969dd1 TM |
7500 | .clientid = clp->cl_clientid, |
7501 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7502 | .cb_program = NFS4_CALLBACK, |
7503 | }; | |
79969dd1 TM |
7504 | struct nfs41_create_session_res res; |
7505 | ||
fc931582 AA |
7506 | struct rpc_message msg = { |
7507 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7508 | .rpc_argp = &args, | |
7509 | .rpc_resp = &res, | |
848f5bda | 7510 | .rpc_cred = cred, |
fc931582 AA |
7511 | }; |
7512 | int status; | |
7513 | ||
6b26cc8c | 7514 | nfs4_init_channel_attrs(&args, clp->cl_rpcclient); |
0f91421e | 7515 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7516 | |
1bd714f2 | 7517 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7518 | trace_nfs4_create_session(clp, status); |
fc931582 | 7519 | |
43095d39 | 7520 | if (!status) { |
8d35301d | 7521 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7522 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7523 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7524 | if (clp->cl_seqid == res.seqid) |
7525 | clp->cl_seqid++; | |
7526 | if (status) | |
7527 | goto out; | |
7528 | nfs4_update_session(session, &res); | |
fc931582 | 7529 | } |
79969dd1 | 7530 | out: |
fc931582 AA |
7531 | return status; |
7532 | } | |
7533 | ||
7534 | /* | |
7535 | * Issues a CREATE_SESSION operation to the server. | |
7536 | * It is the responsibility of the caller to verify the session is | |
7537 | * expired before calling this routine. | |
7538 | */ | |
848f5bda | 7539 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7540 | { |
7541 | int status; | |
7542 | unsigned *ptr; | |
fc931582 AA |
7543 | struct nfs4_session *session = clp->cl_session; |
7544 | ||
7545 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7546 | ||
848f5bda | 7547 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7548 | if (status) |
7549 | goto out; | |
7550 | ||
aacd5537 AA |
7551 | /* Init or reset the session slot tables */ |
7552 | status = nfs4_setup_session_slot_tables(session); | |
7553 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7554 | if (status) |
7555 | goto out; | |
7556 | ||
7557 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7558 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7559 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7560 | out: |
7561 | dprintk("<-- %s\n", __func__); | |
7562 | return status; | |
7563 | } | |
7564 | ||
0f3e66c6 AA |
7565 | /* |
7566 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7567 | * The caller must serialize access to this routine. | |
7568 | */ | |
848f5bda TM |
7569 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7570 | struct rpc_cred *cred) | |
0f3e66c6 | 7571 | { |
848f5bda TM |
7572 | struct rpc_message msg = { |
7573 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7574 | .rpc_argp = session, | |
7575 | .rpc_cred = cred, | |
7576 | }; | |
0f3e66c6 | 7577 | int status = 0; |
0f3e66c6 AA |
7578 | |
7579 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7580 | ||
7581 | /* session is still being setup */ | |
e11259f9 TM |
7582 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7583 | return 0; | |
0f3e66c6 | 7584 | |
1bd714f2 | 7585 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7586 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7587 | |
7588 | if (status) | |
08106ac7 | 7589 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7590 | "Session has been destroyed regardless...\n", status); |
7591 | ||
7592 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7593 | return status; | |
7594 | } | |
7595 | ||
fc01cea9 AA |
7596 | /* |
7597 | * Renew the cl_session lease. | |
7598 | */ | |
d5f8d3fe TM |
7599 | struct nfs4_sequence_data { |
7600 | struct nfs_client *clp; | |
7601 | struct nfs4_sequence_args args; | |
7602 | struct nfs4_sequence_res res; | |
7603 | }; | |
7604 | ||
dc96aef9 AB |
7605 | static void nfs41_sequence_release(void *data) |
7606 | { | |
d5f8d3fe TM |
7607 | struct nfs4_sequence_data *calldata = data; |
7608 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7609 | |
7135840f AB |
7610 | if (atomic_read(&clp->cl_count) > 1) |
7611 | nfs4_schedule_state_renewal(clp); | |
7612 | nfs_put_client(clp); | |
d5f8d3fe | 7613 | kfree(calldata); |
dc96aef9 AB |
7614 | } |
7615 | ||
aa5190d0 TM |
7616 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7617 | { | |
7618 | switch(task->tk_status) { | |
7619 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7620 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7621 | return -EAGAIN; | |
7622 | default: | |
0400a6b0 | 7623 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7624 | } |
7625 | return 0; | |
7626 | } | |
7627 | ||
dc96aef9 | 7628 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7629 | { |
d5f8d3fe TM |
7630 | struct nfs4_sequence_data *calldata = data; |
7631 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7632 | |
14516c3a TM |
7633 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7634 | return; | |
fc01cea9 | 7635 | |
c6d01c6f | 7636 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7637 | if (task->tk_status < 0) { |
7638 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7639 | if (atomic_read(&clp->cl_count) == 1) |
7640 | goto out; | |
fc01cea9 | 7641 | |
aa5190d0 TM |
7642 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7643 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7644 | return; |
7645 | } | |
7646 | } | |
fc01cea9 | 7647 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7648 | out: |
fc01cea9 AA |
7649 | dprintk("<-- %s\n", __func__); |
7650 | } | |
7651 | ||
7652 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7653 | { | |
d5f8d3fe TM |
7654 | struct nfs4_sequence_data *calldata = data; |
7655 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7656 | struct nfs4_sequence_args *args; |
7657 | struct nfs4_sequence_res *res; | |
7658 | ||
fc01cea9 AA |
7659 | args = task->tk_msg.rpc_argp; |
7660 | res = task->tk_msg.rpc_resp; | |
7661 | ||
d9afbd1b | 7662 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7663 | } |
7664 | ||
7665 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7666 | .rpc_call_done = nfs41_sequence_call_done, | |
7667 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7668 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7669 | }; |
7670 | ||
8fe72bac TM |
7671 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7672 | struct rpc_cred *cred, | |
7673 | bool is_privileged) | |
fc01cea9 | 7674 | { |
d5f8d3fe | 7675 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7676 | struct rpc_message msg = { |
7677 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7678 | .rpc_cred = cred, | |
7679 | }; | |
71ac6da9 TM |
7680 | struct rpc_task_setup task_setup_data = { |
7681 | .rpc_client = clp->cl_rpcclient, | |
7682 | .rpc_message = &msg, | |
8fe72bac | 7683 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7684 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7685 | }; |
fc01cea9 | 7686 | |
7135840f | 7687 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7688 | return ERR_PTR(-EIO); |
dfb4f309 | 7689 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7690 | if (calldata == NULL) { |
7135840f | 7691 | nfs_put_client(clp); |
71ac6da9 | 7692 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7693 | } |
a9c92d6b | 7694 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7695 | if (is_privileged) |
7696 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7697 | msg.rpc_argp = &calldata->args; |
7698 | msg.rpc_resp = &calldata->res; | |
7699 | calldata->clp = clp; | |
71ac6da9 | 7700 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7701 | |
71ac6da9 TM |
7702 | return rpc_run_task(&task_setup_data); |
7703 | } | |
7704 | ||
2f60ea6b | 7705 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7706 | { |
7707 | struct rpc_task *task; | |
7708 | int ret = 0; | |
7709 | ||
2f60ea6b | 7710 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7711 | return -EAGAIN; |
8fe72bac | 7712 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7713 | if (IS_ERR(task)) |
7714 | ret = PTR_ERR(task); | |
7715 | else | |
bf294b41 | 7716 | rpc_put_task_async(task); |
71ac6da9 TM |
7717 | dprintk("<-- %s status=%d\n", __func__, ret); |
7718 | return ret; | |
7719 | } | |
7720 | ||
7721 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7722 | { | |
7723 | struct rpc_task *task; | |
7724 | int ret; | |
7725 | ||
8fe72bac | 7726 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7727 | if (IS_ERR(task)) { |
7728 | ret = PTR_ERR(task); | |
7729 | goto out; | |
7730 | } | |
7731 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7732 | if (!ret) |
71ac6da9 TM |
7733 | ret = task->tk_status; |
7734 | rpc_put_task(task); | |
7735 | out: | |
7736 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7737 | return ret; | |
fc01cea9 AA |
7738 | } |
7739 | ||
fce5c838 RL |
7740 | struct nfs4_reclaim_complete_data { |
7741 | struct nfs_client *clp; | |
7742 | struct nfs41_reclaim_complete_args arg; | |
7743 | struct nfs41_reclaim_complete_res res; | |
7744 | }; | |
7745 | ||
7746 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7747 | { | |
7748 | struct nfs4_reclaim_complete_data *calldata = data; | |
7749 | ||
d9afbd1b TM |
7750 | nfs41_setup_sequence(calldata->clp->cl_session, |
7751 | &calldata->arg.seq_args, | |
7752 | &calldata->res.seq_res, | |
7753 | task); | |
fce5c838 RL |
7754 | } |
7755 | ||
aa5190d0 TM |
7756 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7757 | { | |
7758 | switch(task->tk_status) { | |
7759 | case 0: | |
7760 | case -NFS4ERR_COMPLETE_ALREADY: | |
7761 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7762 | break; | |
7763 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7764 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7765 | /* fall through */ |
7766 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7767 | return -EAGAIN; |
7768 | default: | |
0400a6b0 | 7769 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7770 | } |
7771 | return 0; | |
7772 | } | |
7773 | ||
fce5c838 RL |
7774 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7775 | { | |
7776 | struct nfs4_reclaim_complete_data *calldata = data; | |
7777 | struct nfs_client *clp = calldata->clp; | |
7778 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7779 | ||
7780 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7781 | if (!nfs41_sequence_done(task, res)) |
7782 | return; | |
fce5c838 | 7783 | |
c6d01c6f | 7784 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7785 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7786 | rpc_restart_call_prepare(task); | |
7787 | return; | |
7788 | } | |
fce5c838 RL |
7789 | dprintk("<-- %s\n", __func__); |
7790 | } | |
7791 | ||
7792 | static void nfs4_free_reclaim_complete_data(void *data) | |
7793 | { | |
7794 | struct nfs4_reclaim_complete_data *calldata = data; | |
7795 | ||
7796 | kfree(calldata); | |
7797 | } | |
7798 | ||
7799 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7800 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7801 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7802 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7803 | }; | |
7804 | ||
7805 | /* | |
7806 | * Issue a global reclaim complete. | |
7807 | */ | |
965e9c23 TM |
7808 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7809 | struct rpc_cred *cred) | |
fce5c838 RL |
7810 | { |
7811 | struct nfs4_reclaim_complete_data *calldata; | |
7812 | struct rpc_task *task; | |
7813 | struct rpc_message msg = { | |
7814 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7815 | .rpc_cred = cred, |
fce5c838 RL |
7816 | }; |
7817 | struct rpc_task_setup task_setup_data = { | |
7818 | .rpc_client = clp->cl_rpcclient, | |
7819 | .rpc_message = &msg, | |
7820 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7821 | .flags = RPC_TASK_ASYNC, | |
7822 | }; | |
7823 | int status = -ENOMEM; | |
7824 | ||
7825 | dprintk("--> %s\n", __func__); | |
8535b2be | 7826 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7827 | if (calldata == NULL) |
7828 | goto out; | |
7829 | calldata->clp = clp; | |
7830 | calldata->arg.one_fs = 0; | |
fce5c838 | 7831 | |
a9c92d6b | 7832 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7833 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7834 | msg.rpc_argp = &calldata->arg; |
7835 | msg.rpc_resp = &calldata->res; | |
7836 | task_setup_data.callback_data = calldata; | |
7837 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7838 | if (IS_ERR(task)) { |
fce5c838 | 7839 | status = PTR_ERR(task); |
acf82b85 DC |
7840 | goto out; |
7841 | } | |
c34c32ea AA |
7842 | status = nfs4_wait_for_completion_rpc_task(task); |
7843 | if (status == 0) | |
7844 | status = task->tk_status; | |
fce5c838 | 7845 | rpc_put_task(task); |
acf82b85 | 7846 | return 0; |
fce5c838 RL |
7847 | out: |
7848 | dprintk("<-- %s status=%d\n", __func__, status); | |
7849 | return status; | |
7850 | } | |
b1f69b75 AA |
7851 | |
7852 | static void | |
7853 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7854 | { | |
7855 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7856 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7857 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7858 | |
7859 | dprintk("--> %s\n", __func__); | |
183d9e7b JL |
7860 | nfs41_setup_sequence(session, &lgp->args.seq_args, |
7861 | &lgp->res.seq_res, task); | |
7862 | dprintk("<-- %s\n", __func__); | |
b1f69b75 AA |
7863 | } |
7864 | ||
7865 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7866 | { | |
7867 | struct nfs4_layoutget *lgp = calldata; | |
183d9e7b JL |
7868 | |
7869 | dprintk("--> %s\n", __func__); | |
7870 | nfs41_sequence_done(task, &lgp->res.seq_res); | |
7871 | dprintk("<-- %s\n", __func__); | |
7872 | } | |
7873 | ||
7874 | static int | |
7875 | nfs4_layoutget_handle_exception(struct rpc_task *task, | |
7876 | struct nfs4_layoutget *lgp, struct nfs4_exception *exception) | |
7877 | { | |
ee314c2a TM |
7878 | struct inode *inode = lgp->args.inode; |
7879 | struct nfs_server *server = NFS_SERVER(inode); | |
7880 | struct pnfs_layout_hdr *lo; | |
e85d7ee4 TM |
7881 | int nfs4err = task->tk_status; |
7882 | int err, status = 0; | |
f7db0b28 | 7883 | LIST_HEAD(head); |
b1f69b75 | 7884 | |
ed7e5423 | 7885 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7886 | |
e85d7ee4 | 7887 | switch (nfs4err) { |
b1f69b75 | 7888 | case 0: |
ee314c2a | 7889 | goto out; |
7c1e6e58 PT |
7890 | |
7891 | /* | |
7892 | * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs | |
7893 | * on the file. set tk_status to -ENODATA to tell upper layer to | |
7894 | * retry go inband. | |
7895 | */ | |
7896 | case -NFS4ERR_LAYOUTUNAVAILABLE: | |
183d9e7b | 7897 | status = -ENODATA; |
7c1e6e58 | 7898 | goto out; |
21b874c8 TM |
7899 | /* |
7900 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
7901 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
7902 | */ | |
7903 | case -NFS4ERR_BADLAYOUT: | |
183d9e7b JL |
7904 | status = -EOVERFLOW; |
7905 | goto out; | |
ed7e5423 BH |
7906 | /* |
7907 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
7908 | * (or clients) writing to the same RAID stripe except when |
7909 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
183d9e7b JL |
7910 | * |
7911 | * Treat it like we would RECALLCONFLICT -- we retry for a little | |
7912 | * while, and then eventually give up. | |
ed7e5423 | 7913 | */ |
b1f69b75 | 7914 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b JL |
7915 | if (lgp->args.minlength == 0) { |
7916 | status = -EOVERFLOW; | |
7917 | goto out; | |
ed7e5423 | 7918 | } |
e85d7ee4 TM |
7919 | status = -EBUSY; |
7920 | break; | |
183d9e7b | 7921 | case -NFS4ERR_RECALLCONFLICT: |
183d9e7b | 7922 | status = -ERECALLCONFLICT; |
e85d7ee4 | 7923 | break; |
ee314c2a TM |
7924 | case -NFS4ERR_EXPIRED: |
7925 | case -NFS4ERR_BAD_STATEID: | |
183d9e7b | 7926 | exception->timeout = 0; |
ee314c2a | 7927 | spin_lock(&inode->i_lock); |
f7db0b28 TM |
7928 | lo = NFS_I(inode)->layout; |
7929 | /* If the open stateid was bad, then recover it. */ | |
7930 | if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) || | |
7931 | nfs4_stateid_match_other(&lgp->args.stateid, | |
2259f960 | 7932 | &lgp->args.ctx->state->stateid)) { |
ee314c2a | 7933 | spin_unlock(&inode->i_lock); |
183d9e7b | 7934 | exception->state = lgp->args.ctx->state; |
2259f960 TM |
7935 | break; |
7936 | } | |
f7db0b28 TM |
7937 | |
7938 | /* | |
7939 | * Mark the bad layout state as invalid, then retry | |
7940 | */ | |
668f455d | 7941 | pnfs_mark_layout_stateid_invalid(lo, &head); |
f7db0b28 TM |
7942 | spin_unlock(&inode->i_lock); |
7943 | pnfs_free_lseg_list(&head); | |
7944 | status = -EAGAIN; | |
7945 | goto out; | |
b1f69b75 | 7946 | } |
183d9e7b | 7947 | |
e85d7ee4 TM |
7948 | err = nfs4_handle_exception(server, nfs4err, exception); |
7949 | if (!status) { | |
7950 | if (exception->retry) | |
7951 | status = -EAGAIN; | |
7952 | else | |
7953 | status = err; | |
7954 | } | |
ee314c2a | 7955 | out: |
b1f69b75 | 7956 | dprintk("<-- %s\n", __func__); |
183d9e7b | 7957 | return status; |
b1f69b75 AA |
7958 | } |
7959 | ||
8554116e IK |
7960 | static size_t max_response_pages(struct nfs_server *server) |
7961 | { | |
7962 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7963 | return nfs_page_array_len(0, max_resp_sz); | |
7964 | } | |
7965 | ||
7966 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7967 | { | |
7968 | int i; | |
7969 | ||
7970 | if (!pages) | |
7971 | return; | |
7972 | ||
7973 | for (i = 0; i < size; i++) { | |
7974 | if (!pages[i]) | |
7975 | break; | |
7976 | __free_page(pages[i]); | |
7977 | } | |
7978 | kfree(pages); | |
7979 | } | |
7980 | ||
7981 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7982 | { | |
7983 | struct page **pages; | |
7984 | int i; | |
7985 | ||
7986 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7987 | if (!pages) { | |
7988 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7989 | return NULL; | |
7990 | } | |
7991 | ||
7992 | for (i = 0; i < size; i++) { | |
7993 | pages[i] = alloc_page(gfp_flags); | |
7994 | if (!pages[i]) { | |
7995 | dprintk("%s: failed to allocate page\n", __func__); | |
7996 | nfs4_free_pages(pages, size); | |
7997 | return NULL; | |
7998 | } | |
7999 | } | |
8000 | ||
8001 | return pages; | |
8002 | } | |
8003 | ||
b1f69b75 AA |
8004 | static void nfs4_layoutget_release(void *calldata) |
8005 | { | |
8006 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
8007 | struct inode *inode = lgp->args.inode; |
8008 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8009 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8010 | |
8011 | dprintk("--> %s\n", __func__); | |
8554116e | 8012 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 8013 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
8014 | put_nfs_open_context(lgp->args.ctx); |
8015 | kfree(calldata); | |
8016 | dprintk("<-- %s\n", __func__); | |
8017 | } | |
8018 | ||
8019 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
8020 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
8021 | .rpc_call_done = nfs4_layoutget_done, | |
8022 | .rpc_release = nfs4_layoutget_release, | |
8023 | }; | |
8024 | ||
a0b0a6e3 | 8025 | struct pnfs_layout_segment * |
183d9e7b | 8026 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) |
b1f69b75 | 8027 | { |
a47970ff WAA |
8028 | struct inode *inode = lgp->args.inode; |
8029 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8030 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8031 | struct rpc_task *task; |
8032 | struct rpc_message msg = { | |
8033 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
8034 | .rpc_argp = &lgp->args, | |
8035 | .rpc_resp = &lgp->res, | |
6ab59344 | 8036 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
8037 | }; |
8038 | struct rpc_task_setup task_setup_data = { | |
8039 | .rpc_client = server->client, | |
8040 | .rpc_message = &msg, | |
8041 | .callback_ops = &nfs4_layoutget_call_ops, | |
8042 | .callback_data = lgp, | |
8043 | .flags = RPC_TASK_ASYNC, | |
8044 | }; | |
a0b0a6e3 | 8045 | struct pnfs_layout_segment *lseg = NULL; |
bc23676c TM |
8046 | struct nfs4_exception exception = { |
8047 | .inode = inode, | |
8048 | .timeout = *timeout, | |
8049 | }; | |
b1f69b75 AA |
8050 | int status = 0; |
8051 | ||
8052 | dprintk("--> %s\n", __func__); | |
8053 | ||
4bd5a980 PT |
8054 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
8055 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
8056 | ||
8554116e IK |
8057 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
8058 | if (!lgp->args.layout.pages) { | |
8059 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 8060 | return ERR_PTR(-ENOMEM); |
8554116e IK |
8061 | } |
8062 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
8063 | ||
35124a09 | 8064 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 8065 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 8066 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 8067 | |
b1f69b75 AA |
8068 | task = rpc_run_task(&task_setup_data); |
8069 | if (IS_ERR(task)) | |
a0b0a6e3 | 8070 | return ERR_CAST(task); |
b1f69b75 | 8071 | status = nfs4_wait_for_completion_rpc_task(task); |
183d9e7b JL |
8072 | if (status == 0) { |
8073 | status = nfs4_layoutget_handle_exception(task, lgp, &exception); | |
8074 | *timeout = exception.timeout; | |
8075 | } | |
8076 | ||
1037e6ea TM |
8077 | trace_nfs4_layoutget(lgp->args.ctx, |
8078 | &lgp->args.range, | |
8079 | &lgp->res.range, | |
48c9579a | 8080 | &lgp->res.stateid, |
1037e6ea | 8081 | status); |
183d9e7b | 8082 | |
085b7a45 WAA |
8083 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
8084 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 8085 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
8086 | rpc_put_task(task); |
8087 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
8088 | if (status) |
8089 | return ERR_PTR(status); | |
8090 | return lseg; | |
b1f69b75 AA |
8091 | } |
8092 | ||
cbe82603 BH |
8093 | static void |
8094 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
8095 | { | |
8096 | struct nfs4_layoutreturn *lrp = calldata; | |
8097 | ||
8098 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
8099 | nfs41_setup_sequence(lrp->clp->cl_session, |
8100 | &lrp->args.seq_args, | |
8101 | &lrp->res.seq_res, | |
8102 | task); | |
cbe82603 BH |
8103 | } |
8104 | ||
8105 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
8106 | { | |
8107 | struct nfs4_layoutreturn *lrp = calldata; | |
8108 | struct nfs_server *server; | |
8109 | ||
8110 | dprintk("--> %s\n", __func__); | |
8111 | ||
6ba7db34 | 8112 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
8113 | return; |
8114 | ||
8115 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
8116 | switch (task->tk_status) { |
8117 | default: | |
8118 | task->tk_status = 0; | |
8119 | case 0: | |
8120 | break; | |
8121 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8122 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8123 | break; |
d00c5d43 | 8124 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8125 | return; |
8126 | } | |
cbe82603 BH |
8127 | dprintk("<-- %s\n", __func__); |
8128 | } | |
8129 | ||
8130 | static void nfs4_layoutreturn_release(void *calldata) | |
8131 | { | |
8132 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8133 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8134 | LIST_HEAD(freeme); |
cbe82603 BH |
8135 | |
8136 | dprintk("--> %s\n", __func__); | |
849b286f | 8137 | spin_lock(&lo->plh_inode->i_lock); |
6d597e17 JL |
8138 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range, |
8139 | be32_to_cpu(lrp->args.stateid.seqid)); | |
45fcc7bc | 8140 | if (lrp->res.lrs_present && pnfs_layout_is_valid(lo)) |
849b286f | 8141 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
d67ae825 | 8142 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f | 8143 | spin_unlock(&lo->plh_inode->i_lock); |
c5d73716 | 8144 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8145 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8146 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8147 | kfree(calldata); |
8148 | dprintk("<-- %s\n", __func__); | |
8149 | } | |
8150 | ||
8151 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8152 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8153 | .rpc_call_done = nfs4_layoutreturn_done, | |
8154 | .rpc_release = nfs4_layoutreturn_release, | |
8155 | }; | |
8156 | ||
6c16605d | 8157 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8158 | { |
8159 | struct rpc_task *task; | |
8160 | struct rpc_message msg = { | |
8161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8162 | .rpc_argp = &lrp->args, | |
8163 | .rpc_resp = &lrp->res, | |
9556000d | 8164 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8165 | }; |
8166 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8167 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8168 | .rpc_message = &msg, |
8169 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8170 | .callback_data = lrp, | |
8171 | }; | |
6c16605d | 8172 | int status = 0; |
cbe82603 | 8173 | |
99ade3c7 AE |
8174 | nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client, |
8175 | NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
8176 | &task_setup_data.rpc_client, &msg); | |
8177 | ||
cbe82603 | 8178 | dprintk("--> %s\n", __func__); |
5a0ec8ac TM |
8179 | if (!sync) { |
8180 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8181 | if (!lrp->inode) { | |
8182 | nfs4_layoutreturn_release(lrp); | |
8183 | return -EAGAIN; | |
8184 | } | |
8185 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8186 | } | |
a9c92d6b | 8187 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8188 | task = rpc_run_task(&task_setup_data); |
8189 | if (IS_ERR(task)) | |
8190 | return PTR_ERR(task); | |
5a0ec8ac TM |
8191 | if (sync) |
8192 | status = task->tk_status; | |
48c9579a | 8193 | trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status); |
cbe82603 BH |
8194 | dprintk("<-- %s status=%d\n", __func__, status); |
8195 | rpc_put_task(task); | |
8196 | return status; | |
8197 | } | |
8198 | ||
b1f69b75 | 8199 | static int |
cd5875fe TM |
8200 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8201 | struct pnfs_device *pdev, | |
8202 | struct rpc_cred *cred) | |
b1f69b75 AA |
8203 | { |
8204 | struct nfs4_getdeviceinfo_args args = { | |
8205 | .pdev = pdev, | |
4e590803 TM |
8206 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8207 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8208 | }; |
8209 | struct nfs4_getdeviceinfo_res res = { | |
8210 | .pdev = pdev, | |
8211 | }; | |
8212 | struct rpc_message msg = { | |
8213 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8214 | .rpc_argp = &args, | |
8215 | .rpc_resp = &res, | |
cd5875fe | 8216 | .rpc_cred = cred, |
b1f69b75 AA |
8217 | }; |
8218 | int status; | |
8219 | ||
8220 | dprintk("--> %s\n", __func__); | |
7c513058 | 8221 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8222 | if (res.notification & ~args.notify_types) |
8223 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8224 | if (res.notification != args.notify_types) |
8225 | pdev->nocache = 1; | |
4e590803 | 8226 | |
b1f69b75 AA |
8227 | dprintk("<-- %s status=%d\n", __func__, status); |
8228 | ||
8229 | return status; | |
8230 | } | |
8231 | ||
cd5875fe TM |
8232 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8233 | struct pnfs_device *pdev, | |
8234 | struct rpc_cred *cred) | |
b1f69b75 AA |
8235 | { |
8236 | struct nfs4_exception exception = { }; | |
8237 | int err; | |
8238 | ||
8239 | do { | |
8240 | err = nfs4_handle_exception(server, | |
cd5875fe | 8241 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8242 | &exception); |
8243 | } while (exception.retry); | |
8244 | return err; | |
8245 | } | |
8246 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8247 | ||
863a3c6c AA |
8248 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8249 | { | |
8250 | struct nfs4_layoutcommit_data *data = calldata; | |
8251 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8252 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8253 | |
d9afbd1b TM |
8254 | nfs41_setup_sequence(session, |
8255 | &data->args.seq_args, | |
8256 | &data->res.seq_res, | |
8257 | task); | |
863a3c6c AA |
8258 | } |
8259 | ||
8260 | static void | |
8261 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8262 | { | |
8263 | struct nfs4_layoutcommit_data *data = calldata; | |
8264 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8265 | ||
6ba7db34 | 8266 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8267 | return; |
8268 | ||
8269 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8270 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8271 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8272 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8273 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8274 | task->tk_status = 0; |
e59d27e0 | 8275 | case 0: |
e59d27e0 TM |
8276 | break; |
8277 | default: | |
8478eaa1 | 8278 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8279 | rpc_restart_call_prepare(task); |
8280 | return; | |
8281 | } | |
8282 | } | |
863a3c6c AA |
8283 | } |
8284 | ||
8285 | static void nfs4_layoutcommit_release(void *calldata) | |
8286 | { | |
8287 | struct nfs4_layoutcommit_data *data = calldata; | |
8288 | ||
db29c089 | 8289 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8290 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8291 | data->res.fattr); | |
863a3c6c | 8292 | put_rpccred(data->cred); |
472e2594 | 8293 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8294 | kfree(data); |
8295 | } | |
8296 | ||
8297 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8298 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8299 | .rpc_call_done = nfs4_layoutcommit_done, | |
8300 | .rpc_release = nfs4_layoutcommit_release, | |
8301 | }; | |
8302 | ||
8303 | int | |
ef311537 | 8304 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8305 | { |
8306 | struct rpc_message msg = { | |
8307 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8308 | .rpc_argp = &data->args, | |
8309 | .rpc_resp = &data->res, | |
8310 | .rpc_cred = data->cred, | |
8311 | }; | |
8312 | struct rpc_task_setup task_setup_data = { | |
8313 | .task = &data->task, | |
8314 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8315 | .rpc_message = &msg, | |
8316 | .callback_ops = &nfs4_layoutcommit_ops, | |
8317 | .callback_data = data, | |
863a3c6c AA |
8318 | }; |
8319 | struct rpc_task *task; | |
8320 | int status = 0; | |
8321 | ||
b4839ebe KM |
8322 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8323 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8324 | data->args.lastbytewritten, |
8325 | data->args.inode->i_ino); | |
8326 | ||
472e2594 TM |
8327 | if (!sync) { |
8328 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8329 | if (data->inode == NULL) { | |
8330 | nfs4_layoutcommit_release(data); | |
8331 | return -EAGAIN; | |
8332 | } | |
8333 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8334 | } | |
a9c92d6b | 8335 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8336 | task = rpc_run_task(&task_setup_data); |
8337 | if (IS_ERR(task)) | |
8338 | return PTR_ERR(task); | |
472e2594 TM |
8339 | if (sync) |
8340 | status = task->tk_status; | |
48c9579a | 8341 | trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status); |
863a3c6c AA |
8342 | dprintk("%s: status %d\n", __func__, status); |
8343 | rpc_put_task(task); | |
8344 | return status; | |
8345 | } | |
fca78d6d | 8346 | |
97431204 AA |
8347 | /** |
8348 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8349 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8350 | */ | |
fca78d6d BS |
8351 | static int |
8352 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8353 | struct nfs_fsinfo *info, |
8354 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8355 | { |
8356 | struct nfs41_secinfo_no_name_args args = { | |
8357 | .style = SECINFO_STYLE_CURRENT_FH, | |
8358 | }; | |
8359 | struct nfs4_secinfo_res res = { | |
8360 | .flavors = flavors, | |
8361 | }; | |
8362 | struct rpc_message msg = { | |
8363 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8364 | .rpc_argp = &args, | |
8365 | .rpc_resp = &res, | |
8366 | }; | |
b1b3e136 | 8367 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8368 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8369 | int status; |
8370 | ||
8371 | if (use_integrity) { | |
8372 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8373 | cred = nfs4_get_clid_cred(server->nfs_client); |
8374 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8375 | } |
8376 | ||
8377 | dprintk("--> %s\n", __func__); | |
8378 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8379 | &res.seq_res, 0); | |
8380 | dprintk("<-- %s status=%d\n", __func__, status); | |
8381 | ||
7cb852df WAA |
8382 | if (cred) |
8383 | put_rpccred(cred); | |
b1b3e136 WAA |
8384 | |
8385 | return status; | |
fca78d6d BS |
8386 | } |
8387 | ||
8388 | static int | |
8389 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8390 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8391 | { | |
8392 | struct nfs4_exception exception = { }; | |
8393 | int err; | |
8394 | do { | |
b1b3e136 WAA |
8395 | /* first try using integrity protection */ |
8396 | err = -NFS4ERR_WRONGSEC; | |
8397 | ||
8398 | /* try to use integrity protection with machine cred */ | |
8399 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8400 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8401 | flavors, true); | |
8402 | ||
8403 | /* | |
8404 | * if unable to use integrity protection, or SECINFO with | |
8405 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8406 | * disallowed by spec, but exists in deployed servers) use | |
8407 | * the current filesystem's rpc_client and the user cred. | |
8408 | */ | |
8409 | if (err == -NFS4ERR_WRONGSEC) | |
8410 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8411 | flavors, false); | |
8412 | ||
fca78d6d BS |
8413 | switch (err) { |
8414 | case 0: | |
8415 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8416 | case -ENOTSUPP: |
05e9cfb4 | 8417 | goto out; |
fca78d6d BS |
8418 | default: |
8419 | err = nfs4_handle_exception(server, err, &exception); | |
8420 | } | |
8421 | } while (exception.retry); | |
05e9cfb4 | 8422 | out: |
fca78d6d BS |
8423 | return err; |
8424 | } | |
8425 | ||
8426 | static int | |
8427 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8428 | struct nfs_fsinfo *info) | |
8429 | { | |
8430 | int err; | |
8431 | struct page *page; | |
367156d9 | 8432 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8433 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8434 | struct nfs4_secinfo4 *secinfo; |
8435 | int i; | |
fca78d6d BS |
8436 | |
8437 | page = alloc_page(GFP_KERNEL); | |
8438 | if (!page) { | |
8439 | err = -ENOMEM; | |
8440 | goto out; | |
8441 | } | |
8442 | ||
8443 | flavors = page_address(page); | |
8444 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8445 | ||
8446 | /* | |
8447 | * Fall back on "guess and check" method if | |
8448 | * the server doesn't support SECINFO_NO_NAME | |
8449 | */ | |
78b19bae | 8450 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8451 | err = nfs4_find_root_sec(server, fhandle, info); |
8452 | goto out_freepage; | |
8453 | } | |
8454 | if (err) | |
8455 | goto out_freepage; | |
8456 | ||
58a8cf12 WAA |
8457 | for (i = 0; i < flavors->num_flavors; i++) { |
8458 | secinfo = &flavors->flavors[i]; | |
8459 | ||
8460 | switch (secinfo->flavor) { | |
8461 | case RPC_AUTH_NULL: | |
8462 | case RPC_AUTH_UNIX: | |
8463 | case RPC_AUTH_GSS: | |
8464 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8465 | &secinfo->flavor_info); | |
8466 | break; | |
8467 | default: | |
8468 | flavor = RPC_AUTH_MAXFLAVOR; | |
8469 | break; | |
8470 | } | |
8471 | ||
4d4b69dd WAA |
8472 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8473 | flavor = RPC_AUTH_MAXFLAVOR; | |
8474 | ||
58a8cf12 WAA |
8475 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8476 | err = nfs4_lookup_root_sec(server, fhandle, | |
8477 | info, flavor); | |
8478 | if (!err) | |
8479 | break; | |
8480 | } | |
8481 | } | |
8482 | ||
8483 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8484 | err = -EPERM; | |
fca78d6d BS |
8485 | |
8486 | out_freepage: | |
8487 | put_page(page); | |
8488 | if (err == -EACCES) | |
8489 | return -EPERM; | |
8490 | out: | |
8491 | return err; | |
8492 | } | |
1cab0652 | 8493 | |
ab7cb0df TM |
8494 | static int _nfs41_test_stateid(struct nfs_server *server, |
8495 | nfs4_stateid *stateid, | |
8496 | struct rpc_cred *cred) | |
7d974794 BS |
8497 | { |
8498 | int status; | |
8499 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8500 | .stateid = stateid, |
7d974794 BS |
8501 | }; |
8502 | struct nfs41_test_stateid_res res; | |
8503 | struct rpc_message msg = { | |
8504 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8505 | .rpc_argp = &args, | |
8506 | .rpc_resp = &res, | |
ab7cb0df | 8507 | .rpc_cred = cred, |
7d974794 | 8508 | }; |
3787d506 WAA |
8509 | struct rpc_clnt *rpc_client = server->client; |
8510 | ||
8511 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8512 | &rpc_client, &msg); | |
1cab0652 | 8513 | |
38527b15 | 8514 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8515 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8516 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8517 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8518 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8519 | if (status != NFS_OK) { |
8520 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8521 | return status; |
38527b15 CL |
8522 | } |
8523 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8524 | return -res.status; |
7d974794 BS |
8525 | } |
8526 | ||
38527b15 CL |
8527 | /** |
8528 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8529 | * | |
8530 | * @server: server / transport on which to perform the operation | |
8531 | * @stateid: state ID to test | |
ab7cb0df | 8532 | * @cred: credential |
38527b15 CL |
8533 | * |
8534 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8535 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8536 | * failed or the state ID is not currently valid. | |
8537 | */ | |
ab7cb0df TM |
8538 | static int nfs41_test_stateid(struct nfs_server *server, |
8539 | nfs4_stateid *stateid, | |
8540 | struct rpc_cred *cred) | |
7d974794 BS |
8541 | { |
8542 | struct nfs4_exception exception = { }; | |
8543 | int err; | |
8544 | do { | |
ab7cb0df | 8545 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8546 | if (err != -NFS4ERR_DELAY) |
8547 | break; | |
8548 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8549 | } while (exception.retry); |
8550 | return err; | |
8551 | } | |
9aeda35f | 8552 | |
7c1d5fae TM |
8553 | struct nfs_free_stateid_data { |
8554 | struct nfs_server *server; | |
8555 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8556 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8557 | }; |
8558 | ||
8559 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8560 | { | |
8561 | struct nfs_free_stateid_data *data = calldata; | |
8562 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8563 | &data->args.seq_args, | |
8564 | &data->res.seq_res, | |
8565 | task); | |
8566 | } | |
8567 | ||
8568 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8569 | { | |
8570 | struct nfs_free_stateid_data *data = calldata; | |
8571 | ||
8572 | nfs41_sequence_done(task, &data->res.seq_res); | |
8573 | ||
8574 | switch (task->tk_status) { | |
8575 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8576 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8577 | rpc_restart_call_prepare(task); |
8578 | } | |
8579 | } | |
8580 | ||
8581 | static void nfs41_free_stateid_release(void *calldata) | |
8582 | { | |
8583 | kfree(calldata); | |
8584 | } | |
8585 | ||
17f26b12 | 8586 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8587 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8588 | .rpc_call_done = nfs41_free_stateid_done, | |
8589 | .rpc_release = nfs41_free_stateid_release, | |
8590 | }; | |
8591 | ||
8592 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8593 | nfs4_stateid *stateid, | |
ab7cb0df | 8594 | struct rpc_cred *cred, |
7c1d5fae TM |
8595 | bool privileged) |
8596 | { | |
9aeda35f BS |
8597 | struct rpc_message msg = { |
8598 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8599 | .rpc_cred = cred, |
9aeda35f | 8600 | }; |
7c1d5fae TM |
8601 | struct rpc_task_setup task_setup = { |
8602 | .rpc_client = server->client, | |
8603 | .rpc_message = &msg, | |
8604 | .callback_ops = &nfs41_free_stateid_ops, | |
8605 | .flags = RPC_TASK_ASYNC, | |
8606 | }; | |
8607 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8608 | |
3787d506 WAA |
8609 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8610 | &task_setup.rpc_client, &msg); | |
8611 | ||
38527b15 | 8612 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8613 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8614 | if (!data) | |
8615 | return ERR_PTR(-ENOMEM); | |
8616 | data->server = server; | |
8617 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8618 | ||
8619 | task_setup.callback_data = data; | |
8620 | ||
8621 | msg.rpc_argp = &data->args; | |
8622 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8623 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8624 | if (privileged) |
8625 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8626 | ||
8627 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8628 | } |
8629 | ||
38527b15 CL |
8630 | /** |
8631 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8632 | * | |
8633 | * @server: server / transport on which to perform the operation | |
8634 | * @stateid: state ID to release | |
ab7cb0df | 8635 | * @cred: credential |
38527b15 CL |
8636 | * |
8637 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8638 | * negative NFS4ERR value is returned. | |
8639 | */ | |
ab7cb0df TM |
8640 | static int nfs41_free_stateid(struct nfs_server *server, |
8641 | nfs4_stateid *stateid, | |
8642 | struct rpc_cred *cred) | |
9aeda35f | 8643 | { |
7c1d5fae TM |
8644 | struct rpc_task *task; |
8645 | int ret; | |
8646 | ||
ab7cb0df | 8647 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8648 | if (IS_ERR(task)) |
8649 | return PTR_ERR(task); | |
8650 | ret = rpc_wait_for_completion_task(task); | |
8651 | if (!ret) | |
8652 | ret = task->tk_status; | |
8653 | rpc_put_task(task); | |
8654 | return ret; | |
9aeda35f | 8655 | } |
36281caa | 8656 | |
f1cdae87 JL |
8657 | static void |
8658 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8659 | { |
8660 | struct rpc_task *task; | |
ab7cb0df | 8661 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8662 | |
ab7cb0df | 8663 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8664 | nfs4_free_lock_state(server, lsp); |
8665 | if (IS_ERR(task)) | |
f1cdae87 | 8666 | return; |
c8b2d0bf | 8667 | rpc_put_task(task); |
c8b2d0bf TM |
8668 | } |
8669 | ||
36281caa TM |
8670 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8671 | const nfs4_stateid *s2) | |
8672 | { | |
93b717fd TM |
8673 | if (s1->type != s2->type) |
8674 | return false; | |
8675 | ||
2d2f24ad | 8676 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8677 | return false; |
8678 | ||
2d2f24ad | 8679 | if (s1->seqid == s2->seqid) |
36281caa | 8680 | return true; |
2d2f24ad | 8681 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8682 | return true; |
8683 | ||
8684 | return false; | |
8685 | } | |
8686 | ||
557134a3 AA |
8687 | #endif /* CONFIG_NFS_V4_1 */ |
8688 | ||
36281caa TM |
8689 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8690 | const nfs4_stateid *s2) | |
8691 | { | |
f597c537 | 8692 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8693 | } |
8694 | ||
8695 | ||
17280175 | 8696 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8697 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8698 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8699 | .recover_open = nfs4_open_reclaim, |
8700 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8701 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8702 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8703 | }; |
8704 | ||
591d71cb | 8705 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8706 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8707 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8708 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8709 | .recover_open = nfs4_open_reclaim, | |
8710 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8711 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8712 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8713 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8714 | }; |
8715 | #endif /* CONFIG_NFS_V4_1 */ | |
8716 | ||
17280175 | 8717 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8718 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8719 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8720 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8721 | .recover_lock = nfs4_lock_expired, |
8722 | .establish_clid = nfs4_init_clientid, | |
8723 | }; | |
8724 | ||
8725 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8726 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8727 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8728 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8729 | .recover_open = nfs41_open_expired, |
8730 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8731 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8732 | }; |
591d71cb | 8733 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8734 | |
17280175 | 8735 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8736 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8737 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8738 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8739 | }; |
8740 | ||
8741 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8742 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8743 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8744 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8745 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8746 | }; |
8747 | #endif | |
8748 | ||
ec011fe8 | 8749 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8750 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8751 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8752 | }; |
8753 | ||
8754 | #if defined(CONFIG_NFS_V4_1) | |
8755 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8756 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8757 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8758 | }; |
8759 | #endif /* CONFIG_NFS_V4_1 */ | |
8760 | ||
97dc1359 TM |
8761 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8762 | .minor_version = 0, | |
39c6daae TM |
8763 | .init_caps = NFS_CAP_READDIRPLUS |
8764 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8765 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8766 | .init_client = nfs40_init_client, |
8767 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8768 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8769 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8770 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8771 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8772 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8773 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8774 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8775 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8776 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8777 | }; |
8778 | ||
8779 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8780 | static struct nfs_seqid * |
8781 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8782 | { | |
8783 | return NULL; | |
8784 | } | |
8785 | ||
97dc1359 TM |
8786 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8787 | .minor_version = 1, | |
39c6daae TM |
8788 | .init_caps = NFS_CAP_READDIRPLUS |
8789 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8790 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8791 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8792 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8793 | .init_client = nfs41_init_client, |
8794 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8795 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8796 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8797 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8798 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8799 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8800 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8801 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8802 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8803 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8804 | }; |
8805 | #endif | |
8806 | ||
42c2c424 SD |
8807 | #if defined(CONFIG_NFS_V4_2) |
8808 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8809 | .minor_version = 2, | |
7017310a BS |
8810 | .init_caps = NFS_CAP_READDIRPLUS |
8811 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8812 | | NFS_CAP_POSIX_LOCK |
8813 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8814 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8815 | | NFS_CAP_ALLOCATE |
2e72448b | 8816 | | NFS_CAP_COPY |
624bd5b7 | 8817 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 8818 | | NFS_CAP_SEEK |
e5341f3a PT |
8819 | | NFS_CAP_LAYOUTSTATS |
8820 | | NFS_CAP_CLONE, | |
abf79bb3 CL |
8821 | .init_client = nfs41_init_client, |
8822 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8823 | .match_stateid = nfs41_match_stateid, |
8824 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8825 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8826 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8827 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8828 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8829 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8830 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8831 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8832 | }; |
8833 | #endif | |
8834 | ||
97dc1359 TM |
8835 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8836 | [0] = &nfs_v4_0_minor_ops, | |
8837 | #if defined(CONFIG_NFS_V4_1) | |
8838 | [1] = &nfs_v4_1_minor_ops, | |
8839 | #endif | |
42c2c424 SD |
8840 | #if defined(CONFIG_NFS_V4_2) |
8841 | [2] = &nfs_v4_2_minor_ops, | |
8842 | #endif | |
97dc1359 TM |
8843 | }; |
8844 | ||
13997823 | 8845 | static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) |
c4803c49 AG |
8846 | { |
8847 | ssize_t error, error2; | |
8848 | ||
8849 | error = generic_listxattr(dentry, list, size); | |
8850 | if (error < 0) | |
8851 | return error; | |
8852 | if (list) { | |
8853 | list += error; | |
8854 | size -= error; | |
8855 | } | |
8856 | ||
8857 | error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size); | |
8858 | if (error2 < 0) | |
8859 | return error2; | |
8860 | return error + error2; | |
8861 | } | |
8862 | ||
17f26b12 | 8863 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8864 | .create = nfs_create, |
8865 | .lookup = nfs_lookup, | |
8866 | .atomic_open = nfs_atomic_open, | |
8867 | .link = nfs_link, | |
8868 | .unlink = nfs_unlink, | |
8869 | .symlink = nfs_symlink, | |
8870 | .mkdir = nfs_mkdir, | |
8871 | .rmdir = nfs_rmdir, | |
8872 | .mknod = nfs_mknod, | |
8873 | .rename = nfs_rename, | |
8874 | .permission = nfs_permission, | |
8875 | .getattr = nfs_getattr, | |
8876 | .setattr = nfs_setattr, | |
8877 | .getxattr = generic_getxattr, | |
8878 | .setxattr = generic_setxattr, | |
c4803c49 | 8879 | .listxattr = nfs4_listxattr, |
73a79706 BS |
8880 | .removexattr = generic_removexattr, |
8881 | }; | |
8882 | ||
92e1d5be | 8883 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8884 | .permission = nfs_permission, |
8885 | .getattr = nfs_getattr, | |
8886 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8887 | .getxattr = generic_getxattr, |
8888 | .setxattr = generic_setxattr, | |
c4803c49 | 8889 | .listxattr = nfs4_listxattr, |
64c2ce8b | 8890 | .removexattr = generic_removexattr, |
6b3b5496 BF |
8891 | }; |
8892 | ||
509de811 | 8893 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8894 | .version = 4, /* protocol version */ |
8895 | .dentry_ops = &nfs4_dentry_operations, | |
8896 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8897 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8898 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8899 | .getroot = nfs4_proc_get_root, |
281cad46 | 8900 | .submount = nfs4_submount, |
ff9099f2 | 8901 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8902 | .getattr = nfs4_proc_getattr, |
8903 | .setattr = nfs4_proc_setattr, | |
8904 | .lookup = nfs4_proc_lookup, | |
8905 | .access = nfs4_proc_access, | |
8906 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8907 | .create = nfs4_proc_create, |
8908 | .remove = nfs4_proc_remove, | |
8909 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8910 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8911 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8912 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8913 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8914 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8915 | .link = nfs4_proc_link, |
8916 | .symlink = nfs4_proc_symlink, | |
8917 | .mkdir = nfs4_proc_mkdir, | |
8918 | .rmdir = nfs4_proc_remove, | |
8919 | .readdir = nfs4_proc_readdir, | |
8920 | .mknod = nfs4_proc_mknod, | |
8921 | .statfs = nfs4_proc_statfs, | |
8922 | .fsinfo = nfs4_proc_fsinfo, | |
8923 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8924 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8925 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8926 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8927 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8928 | .read_done = nfs4_read_done, |
1da177e4 | 8929 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8930 | .write_done = nfs4_write_done, |
1da177e4 | 8931 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8932 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8933 | .commit_done = nfs4_commit_done, |
1da177e4 | 8934 | .lock = nfs4_proc_lock, |
e50a1c2e | 8935 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8936 | .close_context = nfs4_close_context, |
2b484297 | 8937 | .open_context = nfs4_atomic_open, |
011e2a7f | 8938 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8939 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8940 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8941 | .init_client = nfs4_init_client, |
cdb7eced | 8942 | .free_client = nfs4_free_client, |
1179acc6 BS |
8943 | .create_server = nfs4_create_server, |
8944 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8945 | }; |
8946 | ||
64c2ce8b | 8947 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
98e9cb57 | 8948 | .name = XATTR_NAME_NFSV4_ACL, |
64c2ce8b AK |
8949 | .list = nfs4_xattr_list_nfs4_acl, |
8950 | .get = nfs4_xattr_get_nfs4_acl, | |
8951 | .set = nfs4_xattr_set_nfs4_acl, | |
8952 | }; | |
8953 | ||
8954 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8955 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8956 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8957 | &nfs4_xattr_nfs4_label_handler, | |
8958 | #endif | |
64c2ce8b AK |
8959 | NULL |
8960 | }; | |
8961 | ||
1da177e4 LT |
8962 | /* |
8963 | * Local variables: | |
8964 | * c-basic-offset: 8 | |
8965 | * End: | |
8966 | */ |