Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
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; |
3114ea7a | 366 | struct inode *inode = exception->inode; |
65de872e TM |
367 | int ret = errorcode; |
368 | ||
b3c2aa07 TM |
369 | exception->delay = 0; |
370 | exception->recovering = 0; | |
65de872e TM |
371 | exception->retry = 0; |
372 | switch(errorcode) { | |
373 | case 0: | |
374 | return 0; | |
3114ea7a | 375 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
376 | case -NFS4ERR_DELEG_REVOKED: |
377 | case -NFS4ERR_ADMIN_REVOKED: | |
378 | case -NFS4ERR_BAD_STATEID: | |
4816fdad TM |
379 | if (inode && nfs_async_inode_return_delegation(inode, |
380 | NULL) == 0) | |
381 | goto wait_on_recovery; | |
3114ea7a TM |
382 | if (state == NULL) |
383 | break; | |
5d422301 TM |
384 | ret = nfs4_schedule_stateid_recovery(server, state); |
385 | if (ret < 0) | |
386 | break; | |
3114ea7a | 387 | goto wait_on_recovery; |
0ced63d1 | 388 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
389 | if (state != NULL) { |
390 | ret = nfs4_schedule_stateid_recovery(server, state); | |
391 | if (ret < 0) | |
392 | break; | |
393 | } | |
65de872e | 394 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 395 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
396 | nfs4_schedule_lease_recovery(clp); |
397 | goto wait_on_recovery; | |
519ae255 CL |
398 | case -NFS4ERR_MOVED: |
399 | ret = nfs4_schedule_migration_recovery(server); | |
400 | if (ret < 0) | |
401 | break; | |
402 | goto wait_on_recovery; | |
8ef2f8d4 CL |
403 | case -NFS4ERR_LEASE_MOVED: |
404 | nfs4_schedule_lease_moved_recovery(clp); | |
405 | goto wait_on_recovery; | |
03391693 | 406 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
407 | case -NFS4ERR_BADSESSION: |
408 | case -NFS4ERR_BADSLOT: | |
409 | case -NFS4ERR_BAD_HIGH_SLOT: | |
410 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
411 | case -NFS4ERR_DEADSESSION: | |
412 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
413 | case -NFS4ERR_SEQ_MISORDERED: | |
414 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
415 | errorcode); | |
9f594791 | 416 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 417 | goto wait_on_recovery; |
03391693 | 418 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 419 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
420 | if (exception->timeout > HZ) { |
421 | /* We have retried a decent amount, time to | |
422 | * fail | |
423 | */ | |
424 | ret = -EBUSY; | |
425 | break; | |
426 | } | |
65de872e | 427 | case -NFS4ERR_DELAY: |
2598ed34 TM |
428 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
429 | case -NFS4ERR_GRACE: | |
183d9e7b | 430 | case -NFS4ERR_RECALLCONFLICT: |
b3c2aa07 TM |
431 | exception->delay = 1; |
432 | return 0; | |
433 | ||
a8a4ae3a | 434 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
435 | case -NFS4ERR_OLD_STATEID: |
436 | exception->retry = 1; | |
b064eca2 TM |
437 | break; |
438 | case -NFS4ERR_BADOWNER: | |
439 | /* The following works around a Linux server bug! */ | |
440 | case -NFS4ERR_BADNAME: | |
441 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
442 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
443 | exception->retry = 1; | |
444 | printk(KERN_WARNING "NFS: v4 server %s " | |
445 | "does not accept raw " | |
446 | "uid/gids. " | |
447 | "Reenabling the idmapper.\n", | |
448 | server->nfs_client->cl_hostname); | |
449 | } | |
65de872e TM |
450 | } |
451 | /* We failed to handle the error */ | |
452 | return nfs4_map_errors(ret); | |
0400a6b0 | 453 | wait_on_recovery: |
b3c2aa07 TM |
454 | exception->recovering = 1; |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* This is the error handling routine for processes that are allowed | |
459 | * to sleep. | |
460 | */ | |
461 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
462 | { | |
463 | struct nfs_client *clp = server->nfs_client; | |
464 | int ret; | |
465 | ||
466 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
467 | if (exception->delay) { | |
468 | ret = nfs4_delay(server->client, &exception->timeout); | |
469 | goto out_retry; | |
470 | } | |
471 | if (exception->recovering) { | |
472 | ret = nfs4_wait_clnt_recover(clp); | |
473 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
474 | return -EIO; | |
475 | goto out_retry; | |
476 | } | |
477 | return ret; | |
478 | out_retry: | |
a2c0b9e2 TM |
479 | if (ret == 0) |
480 | exception->retry = 1; | |
481 | return ret; | |
65de872e TM |
482 | } |
483 | ||
037fc980 TM |
484 | static int |
485 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
486 | int errorcode, struct nfs4_exception *exception) | |
487 | { | |
488 | struct nfs_client *clp = server->nfs_client; | |
489 | int ret; | |
490 | ||
491 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
492 | if (exception->delay) { | |
493 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
494 | goto out_retry; | |
495 | } | |
496 | if (exception->recovering) { | |
497 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
498 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
499 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
500 | goto out_retry; | |
501 | } | |
519ae255 | 502 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
503 | ret = -EIO; |
504 | return ret; | |
505 | out_retry: | |
a2c0b9e2 TM |
506 | if (ret == 0) |
507 | exception->retry = 1; | |
508 | return ret; | |
65de872e TM |
509 | } |
510 | ||
037fc980 TM |
511 | static int |
512 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, | |
513 | struct nfs4_state *state, long *timeout) | |
514 | { | |
515 | struct nfs4_exception exception = { | |
516 | .state = state, | |
517 | }; | |
518 | ||
519 | if (task->tk_status >= 0) | |
520 | return 0; | |
521 | if (timeout) | |
522 | exception.timeout = *timeout; | |
523 | task->tk_status = nfs4_async_handle_exception(task, server, | |
524 | task->tk_status, | |
525 | &exception); | |
526 | if (exception.delay && timeout) | |
527 | *timeout = exception.timeout; | |
528 | if (exception.retry) | |
529 | return -EAGAIN; | |
530 | return 0; | |
531 | } | |
532 | ||
a5250def WAA |
533 | /* |
534 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
535 | * or 'false' otherwise. | |
536 | */ | |
537 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
538 | { | |
539 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
540 | ||
541 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
542 | flavor == RPC_AUTH_GSS_KRB5P) | |
543 | return true; | |
544 | ||
545 | return false; | |
546 | } | |
65de872e | 547 | |
452e9352 | 548 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 549 | { |
1da177e4 LT |
550 | spin_lock(&clp->cl_lock); |
551 | if (time_before(clp->cl_last_renewal,timestamp)) | |
552 | clp->cl_last_renewal = timestamp; | |
553 | spin_unlock(&clp->cl_lock); | |
554 | } | |
555 | ||
452e9352 TM |
556 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
557 | { | |
be824167 TM |
558 | struct nfs_client *clp = server->nfs_client; |
559 | ||
560 | if (!nfs4_has_session(clp)) | |
561 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
562 | } |
563 | ||
2a3eb2b9 CL |
564 | struct nfs4_call_sync_data { |
565 | const struct nfs_server *seq_server; | |
566 | struct nfs4_sequence_args *seq_args; | |
567 | struct nfs4_sequence_res *seq_res; | |
568 | }; | |
569 | ||
be3a5d23 TM |
570 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
571 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
572 | { |
573 | args->sa_slot = NULL; | |
574 | args->sa_cache_this = cache_reply; | |
575 | args->sa_privileged = 0; | |
576 | ||
577 | res->sr_slot = NULL; | |
578 | } | |
579 | ||
580 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
581 | { | |
582 | args->sa_privileged = 1; | |
583 | } | |
584 | ||
cb04ad2a PT |
585 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
586 | struct nfs4_sequence_args *args, | |
587 | struct nfs4_sequence_res *res, | |
588 | struct rpc_task *task) | |
3bd2384a | 589 | { |
3bd2384a CL |
590 | struct nfs4_slot *slot; |
591 | ||
592 | /* slot already allocated? */ | |
593 | if (res->sr_slot != NULL) | |
594 | goto out_start; | |
595 | ||
596 | spin_lock(&tbl->slot_tbl_lock); | |
597 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
598 | goto out_sleep; | |
599 | ||
600 | slot = nfs4_alloc_slot(tbl); | |
601 | if (IS_ERR(slot)) { | |
602 | if (slot == ERR_PTR(-ENOMEM)) | |
603 | task->tk_timeout = HZ >> 2; | |
604 | goto out_sleep; | |
605 | } | |
606 | spin_unlock(&tbl->slot_tbl_lock); | |
607 | ||
608 | args->sa_slot = slot; | |
609 | res->sr_slot = slot; | |
610 | ||
611 | out_start: | |
612 | rpc_call_start(task); | |
613 | return 0; | |
614 | ||
615 | out_sleep: | |
616 | if (args->sa_privileged) | |
617 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
618 | NULL, RPC_PRIORITY_PRIVILEGED); | |
619 | else | |
620 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
621 | spin_unlock(&tbl->slot_tbl_lock); | |
622 | return -EAGAIN; | |
623 | } | |
cb04ad2a | 624 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a CL |
625 | |
626 | static int nfs40_sequence_done(struct rpc_task *task, | |
627 | struct nfs4_sequence_res *res) | |
628 | { | |
629 | struct nfs4_slot *slot = res->sr_slot; | |
630 | struct nfs4_slot_table *tbl; | |
631 | ||
cab92c19 | 632 | if (slot == NULL) |
3bd2384a CL |
633 | goto out; |
634 | ||
635 | tbl = slot->table; | |
636 | spin_lock(&tbl->slot_tbl_lock); | |
637 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
638 | nfs4_free_slot(tbl, slot); | |
639 | spin_unlock(&tbl->slot_tbl_lock); | |
640 | ||
641 | res->sr_slot = NULL; | |
642 | out: | |
643 | return 1; | |
644 | } | |
645 | ||
cccef3b9 AA |
646 | #if defined(CONFIG_NFS_V4_1) |
647 | ||
d185a334 | 648 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 649 | { |
e3725ec0 | 650 | struct nfs4_session *session; |
13615871 | 651 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 652 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 653 | bool send_new_highest_used_slotid = false; |
13615871 | 654 | |
a13ce7c6 | 655 | tbl = slot->table; |
e3725ec0 | 656 | session = tbl->session; |
ea028ac9 | 657 | |
35dc1d74 | 658 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
659 | /* Be nice to the server: try to ensure that the last transmitted |
660 | * value for highest_user_slotid <= target_highest_slotid | |
661 | */ | |
662 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
663 | send_new_highest_used_slotid = true; | |
664 | ||
a13ce7c6 | 665 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
666 | send_new_highest_used_slotid = false; |
667 | goto out_unlock; | |
668 | } | |
a13ce7c6 | 669 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
670 | |
671 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
672 | send_new_highest_used_slotid = false; | |
b75ad4cd | 673 | out_unlock: |
35dc1d74 | 674 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 675 | res->sr_slot = NULL; |
c10e4498 | 676 | if (send_new_highest_used_slotid) |
3f10a6af | 677 | nfs41_notify_server(session->clp); |
13615871 AA |
678 | } |
679 | ||
f9c96fcc | 680 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 681 | { |
e3725ec0 | 682 | struct nfs4_session *session; |
a13ce7c6 | 683 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 684 | struct nfs_client *clp; |
ac20d163 | 685 | bool interrupted = false; |
85563073 | 686 | int ret = 1; |
b0df806c | 687 | |
a13ce7c6 TM |
688 | if (slot == NULL) |
689 | goto out_noaction; | |
468f8613 BS |
690 | /* don't increment the sequence number if the task wasn't sent */ |
691 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
692 | goto out; |
693 | ||
e3725ec0 | 694 | session = slot->table->session; |
933602e3 | 695 | |
ac20d163 TM |
696 | if (slot->interrupted) { |
697 | slot->interrupted = 0; | |
698 | interrupted = true; | |
699 | } | |
700 | ||
2f92ae34 | 701 | trace_nfs4_sequence_done(session, res); |
691daf3b | 702 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
703 | switch (res->sr_status) { |
704 | case 0: | |
b0df806c | 705 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 706 | ++slot->seq_nr; |
e3725ec0 | 707 | clp = session->clp; |
8e63b6a8 | 708 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 709 | /* Check sequence flags */ |
b15c7cdd | 710 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); |
464ee9f9 | 711 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 712 | break; |
ac20d163 TM |
713 | case 1: |
714 | /* | |
715 | * sr_status remains 1 if an RPC level error occurred. | |
716 | * The server may or may not have processed the sequence | |
717 | * operation.. | |
718 | * Mark the slot as having hosted an interrupted RPC call. | |
719 | */ | |
720 | slot->interrupted = 1; | |
721 | goto out; | |
14516c3a TM |
722 | case -NFS4ERR_DELAY: |
723 | /* The server detected a resend of the RPC call and | |
724 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
725 | * of RFC5661. | |
726 | */ | |
df2fabff | 727 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 728 | __func__, |
df2fabff | 729 | slot->slot_nr, |
933602e3 | 730 | slot->seq_nr); |
14516c3a | 731 | goto out_retry; |
85563073 TM |
732 | case -NFS4ERR_BADSLOT: |
733 | /* | |
734 | * The slot id we used was probably retired. Try again | |
735 | * using a different slot id. | |
736 | */ | |
e8794440 TM |
737 | goto retry_nowait; |
738 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
739 | /* |
740 | * Was the last operation on this sequence interrupted? | |
741 | * If so, retry after bumping the sequence number. | |
742 | */ | |
743 | if (interrupted) { | |
744 | ++slot->seq_nr; | |
745 | goto retry_nowait; | |
746 | } | |
e8794440 TM |
747 | /* |
748 | * Could this slot have been previously retired? | |
749 | * If so, then the server may be expecting seq_nr = 1! | |
750 | */ | |
8e63b6a8 TM |
751 | if (slot->seq_nr != 1) { |
752 | slot->seq_nr = 1; | |
753 | goto retry_nowait; | |
754 | } | |
755 | break; | |
e8794440 TM |
756 | case -NFS4ERR_SEQ_FALSE_RETRY: |
757 | ++slot->seq_nr; | |
758 | goto retry_nowait; | |
14516c3a TM |
759 | default: |
760 | /* Just update the slot sequence no. */ | |
933602e3 | 761 | ++slot->seq_nr; |
b0df806c AA |
762 | } |
763 | out: | |
764 | /* The session may be reset by one of the error handlers. */ | |
765 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 766 | nfs41_sequence_free_slot(res); |
a13ce7c6 | 767 | out_noaction: |
85563073 | 768 | return ret; |
e8794440 TM |
769 | retry_nowait: |
770 | if (rpc_restart_call_prepare(task)) { | |
771 | task->tk_status = 0; | |
772 | ret = 0; | |
773 | } | |
774 | goto out; | |
14516c3a | 775 | out_retry: |
d05dd4e9 | 776 | if (!rpc_restart_call(task)) |
14516c3a TM |
777 | goto out; |
778 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
779 | return 0; | |
b0df806c | 780 | } |
f9c96fcc | 781 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 782 | |
2c4b131d | 783 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 784 | { |
e3725ec0 | 785 | if (res->sr_slot == NULL) |
14516c3a | 786 | return 1; |
3bd2384a CL |
787 | if (!res->sr_slot->table->session) |
788 | return nfs40_sequence_done(task, res); | |
14516c3a | 789 | return nfs41_sequence_done(task, res); |
df896455 | 790 | } |
2c4b131d | 791 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 792 | |
dc70d7b3 | 793 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
794 | struct nfs4_sequence_args *args, |
795 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
796 | struct rpc_task *task) |
797 | { | |
fbcd4abc AA |
798 | struct nfs4_slot *slot; |
799 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
800 | |
801 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 802 | /* slot already allocated? */ |
dfb4f309 | 803 | if (res->sr_slot != NULL) |
d9afbd1b | 804 | goto out_success; |
ce5039c1 | 805 | |
fbcd4abc AA |
806 | tbl = &session->fc_slot_table; |
807 | ||
69d206b5 TM |
808 | task->tk_timeout = 0; |
809 | ||
fbcd4abc | 810 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 811 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 812 | !args->sa_privileged) { |
0b1c8fc4 | 813 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 814 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 815 | goto out_sleep; |
689cf5c1 AB |
816 | } |
817 | ||
2dc03b7f | 818 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
819 | if (IS_ERR(slot)) { |
820 | /* If out of memory, try again in 1/4 second */ | |
821 | if (slot == ERR_PTR(-ENOMEM)) | |
822 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 823 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 824 | goto out_sleep; |
fbcd4abc AA |
825 | } |
826 | spin_unlock(&tbl->slot_tbl_lock); | |
827 | ||
2b2fa717 | 828 | args->sa_slot = slot; |
fbcd4abc | 829 | |
e8d92382 | 830 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 831 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 832 | |
dfb4f309 | 833 | res->sr_slot = slot; |
8e63b6a8 | 834 | res->sr_timestamp = jiffies; |
2a6e26cd | 835 | res->sr_status_flags = 0; |
fbcd4abc AA |
836 | /* |
837 | * sr_status is only set in decode_sequence, and so will remain | |
838 | * set to 1 if an rpc level failure occurs. | |
839 | */ | |
840 | res->sr_status = 1; | |
2f92ae34 | 841 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
842 | out_success: |
843 | rpc_call_start(task); | |
ce5039c1 | 844 | return 0; |
7b939a3f | 845 | out_sleep: |
8fe72bac TM |
846 | /* Privileged tasks are queued with top priority */ |
847 | if (args->sa_privileged) | |
1e1093c7 TM |
848 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
849 | NULL, RPC_PRIORITY_PRIVILEGED); | |
850 | else | |
851 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
852 | spin_unlock(&tbl->slot_tbl_lock); |
853 | return -EAGAIN; | |
ce5039c1 | 854 | } |
dc70d7b3 | 855 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 856 | |
5a580e0a CL |
857 | static int nfs4_setup_sequence(const struct nfs_server *server, |
858 | struct nfs4_sequence_args *args, | |
859 | struct nfs4_sequence_res *res, | |
860 | struct rpc_task *task) | |
ce5039c1 | 861 | { |
035168ab | 862 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
863 | int ret = 0; |
864 | ||
3bd2384a | 865 | if (!session) |
cb04ad2a PT |
866 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
867 | args, res, task); | |
035168ab | 868 | |
e8d92382 | 869 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 870 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 871 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 872 | |
9d12b216 | 873 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 874 | |
ce5039c1 AA |
875 | dprintk("<-- %s status=%d\n", __func__, ret); |
876 | return ret; | |
877 | } | |
878 | ||
ce5039c1 AA |
879 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
880 | { | |
2a3eb2b9 | 881 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 882 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 883 | |
035168ab TM |
884 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
885 | ||
d9afbd1b | 886 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
887 | } |
888 | ||
69ab40c4 AA |
889 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
890 | { | |
2a3eb2b9 | 891 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 892 | |
14516c3a | 893 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
894 | } |
895 | ||
17280175 | 896 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 897 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 898 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
899 | }; |
900 | ||
3bd2384a CL |
901 | #else /* !CONFIG_NFS_V4_1 */ |
902 | ||
9915ea7e CL |
903 | static int nfs4_setup_sequence(const struct nfs_server *server, |
904 | struct nfs4_sequence_args *args, | |
905 | struct nfs4_sequence_res *res, | |
906 | struct rpc_task *task) | |
907 | { | |
cb04ad2a PT |
908 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
909 | args, res, task); | |
9915ea7e CL |
910 | } |
911 | ||
2c4b131d PT |
912 | int nfs4_sequence_done(struct rpc_task *task, |
913 | struct nfs4_sequence_res *res) | |
9915ea7e | 914 | { |
3bd2384a | 915 | return nfs40_sequence_done(task, res); |
9915ea7e | 916 | } |
2c4b131d | 917 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
918 | |
919 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
920 | |
921 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
922 | { | |
923 | struct nfs4_call_sync_data *data = calldata; | |
924 | nfs4_setup_sequence(data->seq_server, | |
925 | data->seq_args, data->seq_res, task); | |
926 | } | |
927 | ||
928 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
929 | { | |
930 | struct nfs4_call_sync_data *data = calldata; | |
931 | nfs4_sequence_done(task, data->seq_res); | |
932 | } | |
933 | ||
934 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
935 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
936 | .rpc_call_done = nfs40_call_sync_done, | |
937 | }; | |
938 | ||
7c513058 BS |
939 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
940 | struct nfs_server *server, | |
ce5039c1 AA |
941 | struct rpc_message *msg, |
942 | struct nfs4_sequence_args *args, | |
8fe72bac | 943 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
944 | { |
945 | int ret; | |
946 | struct rpc_task *task; | |
9915ea7e | 947 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 948 | struct nfs4_call_sync_data data = { |
035168ab | 949 | .seq_server = server, |
ce5039c1 AA |
950 | .seq_args = args, |
951 | .seq_res = res, | |
ce5039c1 AA |
952 | }; |
953 | struct rpc_task_setup task_setup = { | |
7c513058 | 954 | .rpc_client = clnt, |
ce5039c1 | 955 | .rpc_message = msg, |
9915ea7e | 956 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
957 | .callback_data = &data |
958 | }; | |
959 | ||
ce5039c1 AA |
960 | task = rpc_run_task(&task_setup); |
961 | if (IS_ERR(task)) | |
962 | ret = PTR_ERR(task); | |
963 | else { | |
964 | ret = task->tk_status; | |
965 | rpc_put_task(task); | |
966 | } | |
967 | return ret; | |
968 | } | |
969 | ||
7c513058 BS |
970 | int nfs4_call_sync(struct rpc_clnt *clnt, |
971 | struct nfs_server *server, | |
e73b83f2 BS |
972 | struct rpc_message *msg, |
973 | struct nfs4_sequence_args *args, | |
974 | struct nfs4_sequence_res *res, | |
975 | int cache_reply) | |
976 | { | |
a9c92d6b | 977 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 978 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 979 | } |
cccef3b9 | 980 | |
38478b24 | 981 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 982 | { |
38478b24 | 983 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 984 | |
38478b24 | 985 | spin_lock(&dir->i_lock); |
359d7d1c | 986 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 987 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 988 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 989 | dir->i_version = cinfo->after; |
3235b403 | 990 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 991 | nfs_fscache_invalidate(dir); |
38478b24 | 992 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
993 | } |
994 | ||
e56e0b78 | 995 | struct nfs4_opendata { |
c6d00e63 | 996 | struct kref kref; |
e56e0b78 TM |
997 | struct nfs_openargs o_arg; |
998 | struct nfs_openres o_res; | |
cdd4e68b TM |
999 | struct nfs_open_confirmargs c_arg; |
1000 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
1001 | struct nfs4_string owner_name; |
1002 | struct nfs4_string group_name; | |
a49c2691 | 1003 | struct nfs4_label *a_label; |
e56e0b78 | 1004 | struct nfs_fattr f_attr; |
1775fd3e | 1005 | struct nfs4_label *f_label; |
e56e0b78 | 1006 | struct dentry *dir; |
82a2c1b7 | 1007 | struct dentry *dentry; |
e56e0b78 | 1008 | struct nfs4_state_owner *owner; |
aac00a8d | 1009 | struct nfs4_state *state; |
e56e0b78 | 1010 | struct iattr attrs; |
26e976a8 | 1011 | unsigned long timestamp; |
3e309914 | 1012 | unsigned int rpc_done : 1; |
5bc2afc2 | 1013 | unsigned int file_created : 1; |
bdeca1b7 | 1014 | unsigned int is_recover : 1; |
24ac23ab TM |
1015 | int rpc_status; |
1016 | int cancelled; | |
e56e0b78 TM |
1017 | }; |
1018 | ||
49f9a0fa TM |
1019 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1020 | int err, struct nfs4_exception *exception) | |
1021 | { | |
1022 | if (err != -EINVAL) | |
1023 | return false; | |
1024 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1025 | return false; | |
1026 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1027 | exception->retry = 1; | |
1028 | return true; | |
1029 | } | |
1030 | ||
6ae37339 TM |
1031 | static u32 |
1032 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1033 | fmode_t fmode, int openflags) | |
1034 | { | |
1035 | u32 res = 0; | |
1036 | ||
1037 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1038 | case FMODE_READ: | |
1039 | res = NFS4_SHARE_ACCESS_READ; | |
1040 | break; | |
1041 | case FMODE_WRITE: | |
1042 | res = NFS4_SHARE_ACCESS_WRITE; | |
1043 | break; | |
1044 | case FMODE_READ|FMODE_WRITE: | |
1045 | res = NFS4_SHARE_ACCESS_BOTH; | |
1046 | } | |
1047 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1048 | goto out; | |
1049 | /* Want no delegation if we're using O_DIRECT */ | |
1050 | if (openflags & O_DIRECT) | |
1051 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1052 | out: | |
1053 | return res; | |
1054 | } | |
1055 | ||
49f9a0fa TM |
1056 | static enum open_claim_type4 |
1057 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1058 | enum open_claim_type4 claim) | |
1059 | { | |
1060 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1061 | return claim; | |
1062 | switch (claim) { | |
1063 | default: | |
1064 | return claim; | |
1065 | case NFS4_OPEN_CLAIM_FH: | |
1066 | return NFS4_OPEN_CLAIM_NULL; | |
1067 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1068 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1069 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1070 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1071 | } | |
1072 | } | |
2ced46c2 TM |
1073 | |
1074 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1075 | { | |
1076 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1077 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1078 | p->o_res.seqid = p->o_arg.seqid; |
1079 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1080 | p->o_res.server = p->o_arg.server; |
5f657530 | 1081 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1082 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1083 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1084 | } |
1085 | ||
82a2c1b7 | 1086 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1087 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1088 | const struct iattr *attrs, |
1775fd3e | 1089 | struct nfs4_label *label, |
4a1c0893 | 1090 | enum open_claim_type4 claim, |
8535b2be | 1091 | gfp_t gfp_mask) |
e56e0b78 | 1092 | { |
82a2c1b7 | 1093 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1094 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1095 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1096 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1097 | struct nfs4_opendata *p; |
1098 | ||
8535b2be | 1099 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1100 | if (p == NULL) |
1101 | goto err; | |
14c43f76 DQ |
1102 | |
1103 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1104 | if (IS_ERR(p->f_label)) | |
1105 | goto err_free_p; | |
1106 | ||
a49c2691 KM |
1107 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1108 | if (IS_ERR(p->a_label)) | |
1109 | goto err_free_f; | |
1110 | ||
63f5f796 TM |
1111 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1112 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1113 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1114 | goto err_free_label; |
82a2c1b7 AV |
1115 | nfs_sb_active(dentry->d_sb); |
1116 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1117 | p->dir = parent; |
1118 | p->owner = sp; | |
1119 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1120 | p->o_arg.open_flags = flags; |
1121 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1122 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1123 | fmode, flags); | |
ae2bb032 WAA |
1124 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1125 | * will return permission denied for all bits until close */ | |
1126 | if (!(flags & O_EXCL)) { | |
1127 | /* ask server to check for all possible rights as results | |
1128 | * are cached */ | |
1129 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1130 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1131 | } |
7539bbab | 1132 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1133 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1134 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1135 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1136 | p->o_arg.server = server; |
aa9c2669 | 1137 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1138 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1139 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1140 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1141 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1142 | case NFS4_OPEN_CLAIM_NULL: |
1143 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1144 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1145 | p->o_arg.fh = NFS_FH(dir); | |
1146 | break; | |
1147 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1148 | case NFS4_OPEN_CLAIM_FH: | |
1149 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1150 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1151 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1152 | } |
536e43d1 | 1153 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1154 | __u32 verf[2]; |
d77d76ff | 1155 | |
e56e0b78 TM |
1156 | p->o_arg.u.attrs = &p->attrs; |
1157 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1158 | |
1159 | verf[0] = jiffies; | |
1160 | verf[1] = current->pid; | |
1161 | memcpy(p->o_arg.u.verifier.data, verf, | |
1162 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1163 | } |
cdd4e68b TM |
1164 | p->c_arg.fh = &p->o_res.fh; |
1165 | p->c_arg.stateid = &p->o_res.stateid; | |
1166 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1167 | nfs4_init_opendata_res(p); |
c6d00e63 | 1168 | kref_init(&p->kref); |
e56e0b78 | 1169 | return p; |
14c43f76 DQ |
1170 | |
1171 | err_free_label: | |
a49c2691 KM |
1172 | nfs4_label_free(p->a_label); |
1173 | err_free_f: | |
14c43f76 DQ |
1174 | nfs4_label_free(p->f_label); |
1175 | err_free_p: | |
e56e0b78 TM |
1176 | kfree(p); |
1177 | err: | |
1178 | dput(parent); | |
1179 | return NULL; | |
1180 | } | |
1181 | ||
c6d00e63 | 1182 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1183 | { |
c6d00e63 TM |
1184 | struct nfs4_opendata *p = container_of(kref, |
1185 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1186 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1187 | |
1188 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1189 | if (p->state != NULL) |
1190 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1191 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1192 | |
a49c2691 | 1193 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1194 | nfs4_label_free(p->f_label); |
1195 | ||
c6d00e63 | 1196 | dput(p->dir); |
82a2c1b7 AV |
1197 | dput(p->dentry); |
1198 | nfs_sb_deactive(sb); | |
6926afd1 | 1199 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1200 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1201 | kfree(p); |
1202 | } | |
1203 | ||
1204 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1205 | { | |
1206 | if (p != NULL) | |
1207 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1208 | } |
1209 | ||
06f814a3 TM |
1210 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1211 | { | |
06f814a3 TM |
1212 | int ret; |
1213 | ||
06f814a3 | 1214 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1215 | return ret; |
1216 | } | |
1217 | ||
24311f88 TM |
1218 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1219 | fmode_t fmode) | |
1220 | { | |
1221 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1222 | case FMODE_READ|FMODE_WRITE: | |
1223 | return state->n_rdwr != 0; | |
1224 | case FMODE_WRITE: | |
1225 | return state->n_wronly != 0; | |
1226 | case FMODE_READ: | |
1227 | return state->n_rdonly != 0; | |
1228 | } | |
1229 | WARN_ON_ONCE(1); | |
1230 | return false; | |
1231 | } | |
1232 | ||
dc0b027d | 1233 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1234 | { |
1235 | int ret = 0; | |
dc0b027d | 1236 | |
536e43d1 | 1237 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1238 | goto out; |
1239 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1240 | case FMODE_READ: |
88069f77 TM |
1241 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1242 | && state->n_rdonly != 0; | |
6ee41268 TM |
1243 | break; |
1244 | case FMODE_WRITE: | |
88069f77 TM |
1245 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1246 | && state->n_wronly != 0; | |
6ee41268 TM |
1247 | break; |
1248 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1249 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1250 | && state->n_rdwr != 0; | |
6ee41268 | 1251 | } |
dc0b027d | 1252 | out: |
6ee41268 TM |
1253 | return ret; |
1254 | } | |
1255 | ||
2a606188 TM |
1256 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1257 | enum open_claim_type4 claim) | |
aac00a8d | 1258 | { |
652f89f6 TM |
1259 | if (delegation == NULL) |
1260 | return 0; | |
dc0b027d | 1261 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1262 | return 0; |
d25be546 TM |
1263 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1264 | return 0; | |
2a606188 TM |
1265 | switch (claim) { |
1266 | case NFS4_OPEN_CLAIM_NULL: | |
1267 | case NFS4_OPEN_CLAIM_FH: | |
1268 | break; | |
1269 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1270 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1271 | break; | |
1272 | default: | |
1273 | return 0; | |
1274 | } | |
b7391f44 | 1275 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1276 | return 1; |
1277 | } | |
1278 | ||
dc0b027d | 1279 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1280 | { |
dc0b027d | 1281 | switch (fmode) { |
e7616923 TM |
1282 | case FMODE_WRITE: |
1283 | state->n_wronly++; | |
1284 | break; | |
1285 | case FMODE_READ: | |
1286 | state->n_rdonly++; | |
1287 | break; | |
1288 | case FMODE_READ|FMODE_WRITE: | |
1289 | state->n_rdwr++; | |
1290 | } | |
dc0b027d | 1291 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1292 | } |
1293 | ||
4f14c194 TM |
1294 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1295 | { | |
1296 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1297 | bool need_recover = false; | |
1298 | ||
1299 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1300 | need_recover = true; | |
1301 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1302 | need_recover = true; | |
1303 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1304 | need_recover = true; | |
1305 | if (need_recover) | |
1306 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1307 | } | |
1308 | ||
e999e80e TM |
1309 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1310 | nfs4_stateid *stateid) | |
1311 | { | |
1312 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1313 | return true; | |
4f14c194 TM |
1314 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1315 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1316 | return true; |
4f14c194 | 1317 | } |
e999e80e TM |
1318 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1319 | return true; | |
1320 | return false; | |
1321 | } | |
1322 | ||
f95549cf TM |
1323 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1324 | { | |
3c38cbe2 TM |
1325 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1326 | return; | |
f95549cf TM |
1327 | if (state->n_wronly) |
1328 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1329 | if (state->n_rdonly) | |
1330 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1331 | if (state->n_rdwr) | |
1332 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1333 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1334 | } |
1335 | ||
226056c5 | 1336 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1337 | nfs4_stateid *arg_stateid, |
226056c5 | 1338 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1339 | { |
226056c5 TM |
1340 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1341 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1342 | case FMODE_WRITE: | |
1343 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1344 | break; | |
1345 | case FMODE_READ: | |
1346 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1347 | break; | |
1348 | case 0: | |
1349 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1350 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1351 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1352 | } | |
1353 | if (stateid == NULL) | |
1354 | return; | |
f95549cf | 1355 | /* Handle races with OPEN */ |
4a1e2feb TM |
1356 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1357 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1358 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1359 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1360 | return; |
f95549cf | 1361 | } |
003707c7 | 1362 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1363 | nfs4_stateid_copy(&state->stateid, stateid); |
1364 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1365 | } |
1366 | ||
4a1e2feb TM |
1367 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1368 | nfs4_stateid *arg_stateid, | |
1369 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1370 | { |
1371 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1372 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1373 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1374 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1375 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1376 | } |
1377 | ||
dc0b027d | 1378 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1379 | { |
dc0b027d | 1380 | switch (fmode) { |
003707c7 TM |
1381 | case FMODE_READ: |
1382 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1383 | break; | |
1384 | case FMODE_WRITE: | |
1385 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1386 | break; | |
1387 | case FMODE_READ|FMODE_WRITE: | |
1388 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1389 | } | |
e999e80e TM |
1390 | if (!nfs_need_update_open_stateid(state, stateid)) |
1391 | return; | |
1392 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1393 | nfs4_stateid_copy(&state->stateid, stateid); | |
1394 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1395 | } |
1396 | ||
dc0b027d | 1397 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1398 | { |
8bda4e4c TM |
1399 | /* |
1400 | * Protect the call to nfs4_state_set_mode_locked and | |
1401 | * serialise the stateid update | |
1402 | */ | |
361cad3c | 1403 | spin_lock(&state->owner->so_lock); |
8bda4e4c | 1404 | write_seqlock(&state->seqlock); |
003707c7 | 1405 | if (deleg_stateid != NULL) { |
f597c537 | 1406 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1407 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1408 | } | |
1409 | if (open_stateid != NULL) | |
dc0b027d | 1410 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c | 1411 | write_sequnlock(&state->seqlock); |
dc0b027d | 1412 | update_open_stateflags(state, fmode); |
ec073428 | 1413 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1414 | } |
1415 | ||
dc0b027d | 1416 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1417 | { |
1418 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1419 | struct nfs_delegation *deleg_cur; | |
1420 | int ret = 0; | |
1421 | ||
dc0b027d | 1422 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1423 | |
1424 | rcu_read_lock(); | |
1425 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1426 | if (deleg_cur == NULL) | |
1427 | goto no_delegation; | |
1428 | ||
1429 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1430 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1431 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1432 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1433 | goto no_delegation_unlock; |
1434 | ||
1435 | if (delegation == NULL) | |
1436 | delegation = &deleg_cur->stateid; | |
f597c537 | 1437 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1438 | goto no_delegation_unlock; |
1439 | ||
b7391f44 | 1440 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1441 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1442 | ret = 1; |
1443 | no_delegation_unlock: | |
1444 | spin_unlock(&deleg_cur->lock); | |
1445 | no_delegation: | |
1446 | rcu_read_unlock(); | |
1447 | ||
1448 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1449 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1450 | ret = 1; |
1451 | } | |
4f14c194 TM |
1452 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1453 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1454 | |
1455 | return ret; | |
1456 | } | |
1457 | ||
39071e6f TM |
1458 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1459 | const nfs4_stateid *stateid) | |
1460 | { | |
1461 | struct nfs4_state *state = lsp->ls_state; | |
1462 | bool ret = false; | |
1463 | ||
1464 | spin_lock(&state->state_lock); | |
1465 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1466 | goto out_noupdate; | |
1467 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1468 | goto out_noupdate; | |
1469 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1470 | ret = true; | |
1471 | out_noupdate: | |
1472 | spin_unlock(&state->state_lock); | |
1473 | return ret; | |
1474 | } | |
34310430 | 1475 | |
dc0b027d | 1476 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1477 | { |
1478 | struct nfs_delegation *delegation; | |
1479 | ||
1480 | rcu_read_lock(); | |
1481 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1482 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1483 | rcu_read_unlock(); |
1484 | return; | |
1485 | } | |
1486 | rcu_read_unlock(); | |
57ec14c5 | 1487 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1488 | } |
1489 | ||
6ee41268 | 1490 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1491 | { |
1492 | struct nfs4_state *state = opendata->state; | |
1493 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1494 | struct nfs_delegation *delegation; | |
f448badd | 1495 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1496 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1497 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1498 | nfs4_stateid stateid; |
1499 | int ret = -EAGAIN; | |
1500 | ||
aac00a8d | 1501 | for (;;) { |
61beef75 | 1502 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1503 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1504 | update_open_stateflags(state, fmode); |
6ee41268 | 1505 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1506 | goto out_return_state; |
6ee41268 | 1507 | } |
61beef75 | 1508 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1509 | rcu_read_lock(); |
1510 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1511 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1512 | rcu_read_unlock(); |
aac00a8d | 1513 | break; |
34310430 | 1514 | } |
aac00a8d | 1515 | /* Save the delegation */ |
f597c537 | 1516 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1517 | rcu_read_unlock(); |
fa332941 | 1518 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1519 | if (!opendata->is_recover) { |
1520 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1521 | if (ret != 0) | |
1522 | goto out; | |
1523 | } | |
aac00a8d | 1524 | ret = -EAGAIN; |
34310430 TM |
1525 | |
1526 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1527 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1528 | goto out_return_state; |
aac00a8d | 1529 | } |
aac00a8d TM |
1530 | out: |
1531 | return ERR_PTR(ret); | |
1532 | out_return_state: | |
1533 | atomic_inc(&state->count); | |
1534 | return state; | |
1535 | } | |
1536 | ||
e23008ec AA |
1537 | static void |
1538 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1539 | { | |
1540 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1541 | struct nfs_delegation *delegation; | |
1542 | int delegation_flags = 0; | |
1543 | ||
1544 | rcu_read_lock(); | |
1545 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1546 | if (delegation) | |
1547 | delegation_flags = delegation->flags; | |
1548 | rcu_read_unlock(); | |
72d79ff8 TM |
1549 | switch (data->o_arg.claim) { |
1550 | default: | |
1551 | break; | |
1552 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1553 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1554 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1555 | "returning a delegation for " | |
1556 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1557 | clp->cl_hostname); | |
72d79ff8 TM |
1558 | return; |
1559 | } | |
1560 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec AA |
1561 | nfs_inode_set_delegation(state->inode, |
1562 | data->owner->so_cred, | |
1563 | &data->o_res); | |
1564 | else | |
1565 | nfs_inode_reclaim_delegation(state->inode, | |
1566 | data->owner->so_cred, | |
1567 | &data->o_res); | |
1568 | } | |
1569 | ||
1570 | /* | |
1571 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1572 | * and update the nfs4_state. | |
1573 | */ | |
1574 | static struct nfs4_state * | |
1575 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1576 | { | |
1577 | struct inode *inode = data->state->inode; | |
1578 | struct nfs4_state *state = data->state; | |
1579 | int ret; | |
1580 | ||
d2bfda2e WAA |
1581 | if (!data->rpc_done) { |
1582 | if (data->rpc_status) { | |
1583 | ret = data->rpc_status; | |
1584 | goto err; | |
1585 | } | |
1586 | /* cached opens have already been processed */ | |
1587 | goto update; | |
e23008ec AA |
1588 | } |
1589 | ||
e23008ec AA |
1590 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1591 | if (ret) | |
1592 | goto err; | |
1593 | ||
1594 | if (data->o_res.delegation_type != 0) | |
1595 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1596 | update: |
e23008ec AA |
1597 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1598 | data->o_arg.fmode); | |
d49f042a | 1599 | atomic_inc(&state->count); |
e23008ec AA |
1600 | |
1601 | return state; | |
1602 | err: | |
1603 | return ERR_PTR(ret); | |
1604 | ||
1605 | } | |
1606 | ||
1607 | static struct nfs4_state * | |
1608 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1609 | { |
1610 | struct inode *inode; | |
1611 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1612 | int ret; |
24ac23ab | 1613 | |
aac00a8d | 1614 | if (!data->rpc_done) { |
6ee41268 | 1615 | state = nfs4_try_open_cached(data); |
9759b0fb | 1616 | trace_nfs4_cached_open(data->state); |
aac00a8d TM |
1617 | goto out; |
1618 | } | |
1619 | ||
1b370bc2 | 1620 | ret = -EAGAIN; |
24ac23ab | 1621 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1622 | goto err; |
1775fd3e | 1623 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1624 | ret = PTR_ERR(inode); |
03f28e3a | 1625 | if (IS_ERR(inode)) |
1b370bc2 TM |
1626 | goto err; |
1627 | ret = -ENOMEM; | |
24ac23ab TM |
1628 | state = nfs4_get_open_state(inode, data->owner); |
1629 | if (state == NULL) | |
1b370bc2 | 1630 | goto err_put_inode; |
e23008ec AA |
1631 | if (data->o_res.delegation_type != 0) |
1632 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1633 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1634 | data->o_arg.fmode); |
24ac23ab | 1635 | iput(inode); |
aac00a8d | 1636 | out: |
7aa262b5 | 1637 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1638 | return state; |
1b370bc2 TM |
1639 | err_put_inode: |
1640 | iput(inode); | |
1641 | err: | |
1642 | return ERR_PTR(ret); | |
24ac23ab TM |
1643 | } |
1644 | ||
e23008ec AA |
1645 | static struct nfs4_state * |
1646 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1647 | { | |
1648 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1649 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1650 | return _nfs4_opendata_to_nfs4_state(data); | |
1651 | } | |
1652 | ||
864472e9 TM |
1653 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1654 | { | |
1655 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1656 | struct nfs_open_context *ctx; | |
1657 | ||
1658 | spin_lock(&state->inode->i_lock); | |
1659 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1660 | if (ctx->state != state) | |
1661 | continue; | |
1662 | get_nfs_open_context(ctx); | |
1663 | spin_unlock(&state->inode->i_lock); | |
1664 | return ctx; | |
1665 | } | |
1666 | spin_unlock(&state->inode->i_lock); | |
1667 | return ERR_PTR(-ENOENT); | |
1668 | } | |
1669 | ||
4a1c0893 TM |
1670 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1671 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1672 | { |
1673 | struct nfs4_opendata *opendata; | |
1674 | ||
4a1c0893 | 1675 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1676 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1677 | if (opendata == NULL) |
1678 | return ERR_PTR(-ENOMEM); | |
1679 | opendata->state = state; | |
1680 | atomic_inc(&state->count); | |
1681 | return opendata; | |
1682 | } | |
1683 | ||
24311f88 TM |
1684 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
1685 | fmode_t fmode) | |
864472e9 | 1686 | { |
2ced46c2 | 1687 | struct nfs4_state *newstate; |
864472e9 TM |
1688 | int ret; |
1689 | ||
24311f88 | 1690 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 1691 | return 0; |
dc0b027d TM |
1692 | opendata->o_arg.open_flags = 0; |
1693 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1694 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1695 | NFS_SB(opendata->dentry->d_sb), | |
1696 | fmode, 0); | |
2ced46c2 TM |
1697 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1698 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1699 | nfs4_init_opendata_res(opendata); | |
b257957e | 1700 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1701 | if (ret != 0) |
1702 | return ret; | |
2ced46c2 | 1703 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1704 | if (IS_ERR(newstate)) |
1705 | return PTR_ERR(newstate); | |
24311f88 TM |
1706 | if (newstate != opendata->state) |
1707 | ret = -ESTALE; | |
643168c2 | 1708 | nfs4_close_state(newstate, fmode); |
24311f88 | 1709 | return ret; |
864472e9 TM |
1710 | } |
1711 | ||
1712 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1713 | { | |
864472e9 TM |
1714 | int ret; |
1715 | ||
4f14c194 TM |
1716 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1717 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1718 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1719 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1720 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1721 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1722 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 | 1723 | smp_rmb(); |
24311f88 TM |
1724 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
1725 | if (ret != 0) | |
1726 | return ret; | |
1727 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1728 | if (ret != 0) | |
1729 | return ret; | |
1730 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1731 | if (ret != 0) | |
1732 | return ret; | |
1ac7e2fd TM |
1733 | /* |
1734 | * We may have performed cached opens for all three recoveries. | |
1735 | * Check if we need to update the current stateid. | |
1736 | */ | |
1737 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1738 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1739 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1740 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1741 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1742 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1743 | } |
864472e9 TM |
1744 | return 0; |
1745 | } | |
1746 | ||
1da177e4 LT |
1747 | /* |
1748 | * OPEN_RECLAIM: | |
1749 | * reclaim state on the server after a reboot. | |
1da177e4 | 1750 | */ |
539cd03a | 1751 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1752 | { |
1ac7e2fd | 1753 | struct nfs_delegation *delegation; |
864472e9 | 1754 | struct nfs4_opendata *opendata; |
dc0b027d | 1755 | fmode_t delegation_type = 0; |
1da177e4 LT |
1756 | int status; |
1757 | ||
4a1c0893 TM |
1758 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1759 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1760 | if (IS_ERR(opendata)) |
1761 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1762 | rcu_read_lock(); |
1763 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1764 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1765 | delegation_type = delegation->type; |
1ac7e2fd | 1766 | rcu_read_unlock(); |
864472e9 TM |
1767 | opendata->o_arg.u.delegation_type = delegation_type; |
1768 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1769 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1770 | return status; |
1771 | } | |
1772 | ||
539cd03a | 1773 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1774 | { |
1775 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1776 | struct nfs4_exception exception = { }; | |
1777 | int err; | |
1778 | do { | |
539cd03a | 1779 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1780 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1781 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1782 | continue; | |
168667c4 | 1783 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1784 | break; |
1785 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1786 | } while (exception.retry); |
1787 | return err; | |
1788 | } | |
1789 | ||
864472e9 TM |
1790 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1791 | { | |
1792 | struct nfs_open_context *ctx; | |
1793 | int ret; | |
1794 | ||
1795 | ctx = nfs4_state_find_open_context(state); | |
1796 | if (IS_ERR(ctx)) | |
91876b13 | 1797 | return -EAGAIN; |
539cd03a | 1798 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1799 | put_nfs_open_context(ctx); |
1800 | return ret; | |
1801 | } | |
1802 | ||
db4f2e63 | 1803 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1804 | { |
be76b5b6 TM |
1805 | switch (err) { |
1806 | default: | |
1807 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1808 | "%d.\n", __func__, err); | |
1809 | case 0: | |
1810 | case -ENOENT: | |
8eee52af | 1811 | case -EAGAIN: |
be76b5b6 TM |
1812 | case -ESTALE: |
1813 | break; | |
1814 | case -NFS4ERR_BADSESSION: | |
1815 | case -NFS4ERR_BADSLOT: | |
1816 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1817 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1818 | case -NFS4ERR_DEADSESSION: | |
1819 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1820 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1821 | return -EAGAIN; | |
1822 | case -NFS4ERR_STALE_CLIENTID: | |
1823 | case -NFS4ERR_STALE_STATEID: | |
1824 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1825 | case -NFS4ERR_EXPIRED: | |
1826 | /* Don't recall a delegation if it was lost */ | |
1827 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1828 | return -EAGAIN; | |
352297b9 CL |
1829 | case -NFS4ERR_MOVED: |
1830 | nfs4_schedule_migration_recovery(server); | |
1831 | return -EAGAIN; | |
8ef2f8d4 CL |
1832 | case -NFS4ERR_LEASE_MOVED: |
1833 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1834 | return -EAGAIN; | |
be76b5b6 TM |
1835 | case -NFS4ERR_DELEG_REVOKED: |
1836 | case -NFS4ERR_ADMIN_REVOKED: | |
1837 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1838 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1839 | nfs_inode_find_state_and_recover(state->inode, |
1840 | stateid); | |
1841 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1842 | return -EAGAIN; |
be76b5b6 TM |
1843 | case -NFS4ERR_DELAY: |
1844 | case -NFS4ERR_GRACE: | |
1845 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1846 | ssleep(1); | |
1847 | return -EAGAIN; | |
db4f2e63 TM |
1848 | case -ENOMEM: |
1849 | case -NFS4ERR_DENIED: | |
1850 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1851 | return 0; | |
be76b5b6 | 1852 | } |
1da177e4 LT |
1853 | return err; |
1854 | } | |
1855 | ||
24311f88 TM |
1856 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
1857 | struct nfs4_state *state, const nfs4_stateid *stateid, | |
1858 | fmode_t type) | |
db4f2e63 TM |
1859 | { |
1860 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1861 | struct nfs4_opendata *opendata; | |
24311f88 | 1862 | int err = 0; |
db4f2e63 TM |
1863 | |
1864 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1865 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1866 | if (IS_ERR(opendata)) | |
1867 | return PTR_ERR(opendata); | |
1868 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5e99b532 JL |
1869 | write_seqlock(&state->seqlock); |
1870 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1871 | write_sequnlock(&state->seqlock); | |
24311f88 TM |
1872 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1873 | switch (type & (FMODE_READ|FMODE_WRITE)) { | |
1874 | case FMODE_READ|FMODE_WRITE: | |
1875 | case FMODE_WRITE: | |
1876 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); | |
1877 | if (err) | |
1878 | break; | |
1879 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1880 | if (err) | |
1881 | break; | |
1882 | case FMODE_READ: | |
1883 | err = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1884 | } | |
db4f2e63 TM |
1885 | nfs4_opendata_put(opendata); |
1886 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1887 | } | |
1888 | ||
be05c860 CL |
1889 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1890 | { | |
1891 | struct nfs4_opendata *data = calldata; | |
1892 | ||
cb04ad2a PT |
1893 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1894 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1895 | } |
1896 | ||
cdd4e68b TM |
1897 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1898 | { | |
1899 | struct nfs4_opendata *data = calldata; | |
1900 | ||
17ead6c8 | 1901 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1902 | |
cdd4e68b | 1903 | data->rpc_status = task->tk_status; |
26e976a8 | 1904 | if (data->rpc_status == 0) { |
f597c537 | 1905 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1906 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1907 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1908 | data->rpc_done = 1; |
26e976a8 | 1909 | } |
cdd4e68b TM |
1910 | } |
1911 | ||
1912 | static void nfs4_open_confirm_release(void *calldata) | |
1913 | { | |
1914 | struct nfs4_opendata *data = calldata; | |
1915 | struct nfs4_state *state = NULL; | |
1916 | ||
1917 | /* If this request hasn't been cancelled, do nothing */ | |
1918 | if (data->cancelled == 0) | |
1919 | goto out_free; | |
1920 | /* In case of error, no cleanup! */ | |
3e309914 | 1921 | if (!data->rpc_done) |
cdd4e68b | 1922 | goto out_free; |
cdd4e68b | 1923 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1924 | if (!IS_ERR(state)) |
643168c2 | 1925 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1926 | out_free: |
c6d00e63 | 1927 | nfs4_opendata_put(data); |
cdd4e68b TM |
1928 | } |
1929 | ||
1930 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 1931 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
1932 | .rpc_call_done = nfs4_open_confirm_done, |
1933 | .rpc_release = nfs4_open_confirm_release, | |
1934 | }; | |
1935 | ||
1936 | /* | |
1937 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1938 | */ | |
1939 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1940 | { | |
2b0143b5 | 1941 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 1942 | struct rpc_task *task; |
5138fde0 TM |
1943 | struct rpc_message msg = { |
1944 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1945 | .rpc_argp = &data->c_arg, | |
1946 | .rpc_resp = &data->c_res, | |
1947 | .rpc_cred = data->owner->so_cred, | |
1948 | }; | |
c970aa85 TM |
1949 | struct rpc_task_setup task_setup_data = { |
1950 | .rpc_client = server->client, | |
5138fde0 | 1951 | .rpc_message = &msg, |
c970aa85 TM |
1952 | .callback_ops = &nfs4_open_confirm_ops, |
1953 | .callback_data = data, | |
101070ca | 1954 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1955 | .flags = RPC_TASK_ASYNC, |
1956 | }; | |
1da177e4 LT |
1957 | int status; |
1958 | ||
17ead6c8 | 1959 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 1960 | kref_get(&data->kref); |
3e309914 TM |
1961 | data->rpc_done = 0; |
1962 | data->rpc_status = 0; | |
5138fde0 | 1963 | data->timestamp = jiffies; |
e92c1e0d BC |
1964 | if (data->is_recover) |
1965 | nfs4_set_sequence_privileged(&data->c_arg.seq_args); | |
c970aa85 | 1966 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1967 | if (IS_ERR(task)) |
cdd4e68b | 1968 | return PTR_ERR(task); |
cdd4e68b TM |
1969 | status = nfs4_wait_for_completion_rpc_task(task); |
1970 | if (status != 0) { | |
1971 | data->cancelled = 1; | |
1972 | smp_wmb(); | |
1973 | } else | |
1974 | status = data->rpc_status; | |
e6b3c4db | 1975 | rpc_put_task(task); |
1da177e4 LT |
1976 | return status; |
1977 | } | |
1978 | ||
24ac23ab | 1979 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1980 | { |
24ac23ab TM |
1981 | struct nfs4_opendata *data = calldata; |
1982 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1983 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 1984 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 1985 | |
24ac23ab | 1986 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1987 | goto out_wait; |
aac00a8d TM |
1988 | /* |
1989 | * Check if we still need to send an OPEN call, or if we can use | |
1990 | * a delegation instead. | |
1991 | */ | |
1992 | if (data->state != NULL) { | |
1993 | struct nfs_delegation *delegation; | |
1994 | ||
dc0b027d | 1995 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1996 | goto out_no_action; |
aac00a8d TM |
1997 | rcu_read_lock(); |
1998 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 1999 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 2000 | goto unlock_no_action; |
aac00a8d TM |
2001 | rcu_read_unlock(); |
2002 | } | |
95b72eb0 | 2003 | /* Update client id. */ |
549b19cc | 2004 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
2005 | switch (claim) { |
2006 | default: | |
2007 | break; | |
8188df17 TM |
2008 | case NFS4_OPEN_CLAIM_PREVIOUS: |
2009 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
2010 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 2011 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
2012 | case NFS4_OPEN_CLAIM_FH: |
2013 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
2014 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
2015 | } | |
26e976a8 | 2016 | data->timestamp = jiffies; |
035168ab | 2017 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 2018 | &data->o_arg.seq_args, |
2240a9e2 TM |
2019 | &data->o_res.seq_res, |
2020 | task) != 0) | |
2021 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2022 | |
2023 | /* Set the create mode (note dependency on the session type) */ | |
2024 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2025 | if (data->o_arg.open_flags & O_EXCL) { | |
2026 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2027 | if (nfs4_has_persistent_session(clp)) | |
2028 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2029 | else if (clp->cl_mvops->minor_version > 0) | |
2030 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2031 | } | |
6ee41268 | 2032 | return; |
652f89f6 | 2033 | unlock_no_action: |
9759b0fb | 2034 | trace_nfs4_cached_open(data->state); |
652f89f6 | 2035 | rcu_read_unlock(); |
6ee41268 TM |
2036 | out_no_action: |
2037 | task->tk_action = NULL; | |
c8da19b9 | 2038 | out_wait: |
b75ad4cd | 2039 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2040 | } |
2041 | ||
24ac23ab TM |
2042 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2043 | { | |
2044 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2045 | |
24ac23ab | 2046 | data->rpc_status = task->tk_status; |
d898528c | 2047 | |
14516c3a TM |
2048 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
2049 | return; | |
d898528c | 2050 | |
24ac23ab | 2051 | if (task->tk_status == 0) { |
807d66d8 TM |
2052 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2053 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2054 | case S_IFREG: |
2055 | break; | |
2056 | case S_IFLNK: | |
24ac23ab | 2057 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2058 | break; |
2059 | case S_IFDIR: | |
24ac23ab | 2060 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2061 | break; |
2062 | default: | |
24ac23ab | 2063 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2064 | } |
6f926b5b | 2065 | } |
26e976a8 | 2066 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2067 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2068 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2069 | } |
3e309914 | 2070 | data->rpc_done = 1; |
24ac23ab | 2071 | } |
6f926b5b | 2072 | |
24ac23ab TM |
2073 | static void nfs4_open_release(void *calldata) |
2074 | { | |
2075 | struct nfs4_opendata *data = calldata; | |
2076 | struct nfs4_state *state = NULL; | |
2077 | ||
2078 | /* If this request hasn't been cancelled, do nothing */ | |
2079 | if (data->cancelled == 0) | |
2080 | goto out_free; | |
2081 | /* In case of error, no cleanup! */ | |
3e309914 | 2082 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2083 | goto out_free; |
2084 | /* In case we need an open_confirm, no cleanup! */ | |
2085 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2086 | goto out_free; | |
24ac23ab | 2087 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2088 | if (!IS_ERR(state)) |
643168c2 | 2089 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2090 | out_free: |
c6d00e63 | 2091 | nfs4_opendata_put(data); |
24ac23ab TM |
2092 | } |
2093 | ||
2094 | static const struct rpc_call_ops nfs4_open_ops = { | |
2095 | .rpc_call_prepare = nfs4_open_prepare, | |
2096 | .rpc_call_done = nfs4_open_done, | |
2097 | .rpc_release = nfs4_open_release, | |
2098 | }; | |
2099 | ||
b257957e | 2100 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 2101 | { |
2b0143b5 | 2102 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2103 | struct nfs_server *server = NFS_SERVER(dir); |
2104 | struct nfs_openargs *o_arg = &data->o_arg; | |
2105 | struct nfs_openres *o_res = &data->o_res; | |
2106 | struct rpc_task *task; | |
5138fde0 TM |
2107 | struct rpc_message msg = { |
2108 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2109 | .rpc_argp = o_arg, | |
2110 | .rpc_resp = o_res, | |
2111 | .rpc_cred = data->owner->so_cred, | |
2112 | }; | |
c970aa85 TM |
2113 | struct rpc_task_setup task_setup_data = { |
2114 | .rpc_client = server->client, | |
5138fde0 | 2115 | .rpc_message = &msg, |
c970aa85 TM |
2116 | .callback_ops = &nfs4_open_ops, |
2117 | .callback_data = data, | |
101070ca | 2118 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2119 | .flags = RPC_TASK_ASYNC, |
2120 | }; | |
24ac23ab TM |
2121 | int status; |
2122 | ||
a9c92d6b | 2123 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2124 | kref_get(&data->kref); |
3e309914 TM |
2125 | data->rpc_done = 0; |
2126 | data->rpc_status = 0; | |
2ced46c2 | 2127 | data->cancelled = 0; |
bdeca1b7 TM |
2128 | data->is_recover = 0; |
2129 | if (isrecover) { | |
8fe72bac | 2130 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2131 | data->is_recover = 1; |
2132 | } | |
c970aa85 | 2133 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2134 | if (IS_ERR(task)) |
2135 | return PTR_ERR(task); | |
2136 | status = nfs4_wait_for_completion_rpc_task(task); | |
2137 | if (status != 0) { | |
2138 | data->cancelled = 1; | |
2139 | smp_wmb(); | |
2140 | } else | |
2141 | status = data->rpc_status; | |
2142 | rpc_put_task(task); | |
2143 | ||
2144 | return status; | |
2145 | } | |
2146 | ||
2147 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2148 | { | |
2b0143b5 | 2149 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2150 | struct nfs_openres *o_res = &data->o_res; |
2151 | int status; | |
2152 | ||
2153 | status = nfs4_run_open_task(data, 1); | |
2154 | if (status != 0 || !data->rpc_done) | |
2155 | return status; | |
2156 | ||
6926afd1 TM |
2157 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2158 | ||
b257957e AB |
2159 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2160 | status = _nfs4_proc_open_confirm(data); | |
2161 | if (status != 0) | |
2162 | return status; | |
2163 | } | |
2164 | ||
2165 | return status; | |
2166 | } | |
2167 | ||
f3792d63 TM |
2168 | /* |
2169 | * Additional permission checks in order to distinguish between an | |
2170 | * open for read, and an open for execute. This works around the | |
2171 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2172 | * the same. | |
2173 | * Note that in the non-execute case, we want to turn off permission | |
2174 | * checking if we just created a new file (POSIX open() semantics). | |
2175 | */ | |
6168f62c WAA |
2176 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2177 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2178 | struct nfs4_state *state, fmode_t fmode, |
2179 | int openflags) | |
6168f62c WAA |
2180 | { |
2181 | struct nfs_access_entry cache; | |
2182 | u32 mask; | |
2183 | ||
2184 | /* access call failed or for some reason the server doesn't | |
2185 | * support any access modes -- defer access call until later */ | |
2186 | if (opendata->o_res.access_supported == 0) | |
2187 | return 0; | |
2188 | ||
2189 | mask = 0; | |
f3792d63 TM |
2190 | /* |
2191 | * Use openflags to check for exec, because fmode won't | |
2192 | * always have FMODE_EXEC set when file open for exec. | |
2193 | */ | |
f8d9a897 WAA |
2194 | if (openflags & __FMODE_EXEC) { |
2195 | /* ONLY check for exec rights */ | |
2196 | mask = MAY_EXEC; | |
f3792d63 | 2197 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2198 | mask = MAY_READ; |
6168f62c WAA |
2199 | |
2200 | cache.cred = cred; | |
2201 | cache.jiffies = jiffies; | |
2202 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2203 | nfs_access_add_cache(state->inode, &cache); | |
2204 | ||
bbd3a8ee | 2205 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2206 | return 0; |
2207 | ||
2208 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2209 | nfs4_close_state(state, fmode); | |
998f40b5 | 2210 | return -EACCES; |
6168f62c WAA |
2211 | } |
2212 | ||
b257957e AB |
2213 | /* |
2214 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2215 | */ | |
2216 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2217 | { | |
2b0143b5 | 2218 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2219 | struct nfs_server *server = NFS_SERVER(dir); |
2220 | struct nfs_openargs *o_arg = &data->o_arg; | |
2221 | struct nfs_openres *o_res = &data->o_res; | |
2222 | int status; | |
2223 | ||
2224 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2225 | if (!data->rpc_done) |
2226 | return status; | |
2227 | if (status != 0) { | |
2228 | if (status == -NFS4ERR_BADNAME && | |
2229 | !(o_arg->open_flags & O_CREAT)) | |
2230 | return -ENOENT; | |
24ac23ab | 2231 | return status; |
08ef7bd3 | 2232 | } |
24ac23ab | 2233 | |
6926afd1 TM |
2234 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2235 | ||
5bc2afc2 | 2236 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2237 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2238 | if (o_arg->open_flags & O_EXCL) |
2239 | data->file_created = 1; | |
2240 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2241 | data->file_created = 1; | |
2242 | } | |
0df5dd4a TM |
2243 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2244 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2245 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2246 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2247 | if (status != 0) |
24ac23ab | 2248 | return status; |
1da177e4 LT |
2249 | } |
2250 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2251 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2252 | return 0; |
1da177e4 LT |
2253 | } |
2254 | ||
d83217c1 AA |
2255 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2256 | { | |
2257 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2258 | } | |
2259 | ||
1da177e4 LT |
2260 | /* |
2261 | * OPEN_EXPIRED: | |
2262 | * reclaim state on the server after a network partition. | |
2263 | * Assumes caller holds the appropriate lock | |
2264 | */ | |
539cd03a | 2265 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2266 | { |
e56e0b78 | 2267 | struct nfs4_opendata *opendata; |
864472e9 | 2268 | int ret; |
1da177e4 | 2269 | |
4a1c0893 | 2270 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2271 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2272 | if (IS_ERR(opendata)) |
2273 | return PTR_ERR(opendata); | |
864472e9 | 2274 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2275 | if (ret == -ESTALE) |
3d4ff43d | 2276 | d_drop(ctx->dentry); |
c6d00e63 | 2277 | nfs4_opendata_put(opendata); |
864472e9 | 2278 | return ret; |
1da177e4 LT |
2279 | } |
2280 | ||
a9ed2e25 | 2281 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2282 | { |
539cd03a | 2283 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2284 | struct nfs4_exception exception = { }; |
2285 | int err; | |
2286 | ||
2287 | do { | |
539cd03a | 2288 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2289 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2290 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2291 | continue; | |
a9ed2e25 TM |
2292 | switch (err) { |
2293 | default: | |
2294 | goto out; | |
2295 | case -NFS4ERR_GRACE: | |
2296 | case -NFS4ERR_DELAY: | |
2297 | nfs4_handle_exception(server, err, &exception); | |
2298 | err = 0; | |
2299 | } | |
202b50dc | 2300 | } while (exception.retry); |
a9ed2e25 | 2301 | out: |
202b50dc TM |
2302 | return err; |
2303 | } | |
2304 | ||
1da177e4 LT |
2305 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2306 | { | |
1da177e4 | 2307 | struct nfs_open_context *ctx; |
864472e9 | 2308 | int ret; |
1da177e4 | 2309 | |
864472e9 TM |
2310 | ctx = nfs4_state_find_open_context(state); |
2311 | if (IS_ERR(ctx)) | |
91876b13 | 2312 | return -EAGAIN; |
539cd03a | 2313 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2314 | put_nfs_open_context(ctx); |
2315 | return ret; | |
1da177e4 LT |
2316 | } |
2317 | ||
4dfd4f7a TM |
2318 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) |
2319 | { | |
2320 | nfs_remove_bad_delegation(state->inode); | |
2321 | write_seqlock(&state->seqlock); | |
2322 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2323 | write_sequnlock(&state->seqlock); | |
2324 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2325 | } | |
2326 | ||
2327 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2328 | { | |
2329 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
2330 | nfs_finish_clear_delegation_stateid(state); | |
2331 | } | |
2332 | ||
2333 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2334 | { | |
2335 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2336 | nfs40_clear_delegation_stateid(state); | |
2337 | return nfs4_open_expired(sp, state); | |
2338 | } | |
2339 | ||
f062eb6c | 2340 | #if defined(CONFIG_NFS_V4_1) |
0c116cad | 2341 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2342 | { |
f062eb6c | 2343 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2344 | nfs4_stateid stateid; |
ab7cb0df | 2345 | struct nfs_delegation *delegation; |
0c116cad TM |
2346 | struct rpc_cred *cred; |
2347 | int status; | |
3e60ffdd | 2348 | |
ab7cb0df TM |
2349 | /* Get the delegation credential for use by test/free_stateid */ |
2350 | rcu_read_lock(); | |
2351 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2352 | if (delegation == NULL) { |
ab7cb0df | 2353 | rcu_read_unlock(); |
0c116cad TM |
2354 | return; |
2355 | } | |
2356 | ||
2357 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
2358 | cred = get_rpccred(delegation->cred); | |
2359 | rcu_read_unlock(); | |
2360 | status = nfs41_test_stateid(server, &stateid, cred); | |
2361 | trace_nfs4_test_delegation_stateid(state, NULL, status); | |
ab7cb0df | 2362 | |
3e60ffdd CL |
2363 | if (status != NFS_OK) { |
2364 | /* Free the stateid unless the server explicitly | |
2365 | * informs us the stateid is unrecognized. */ | |
2366 | if (status != -NFS4ERR_BAD_STATEID) | |
0c116cad TM |
2367 | nfs41_free_stateid(server, &stateid, cred); |
2368 | nfs_finish_clear_delegation_stateid(state); | |
3e60ffdd | 2369 | } |
ab7cb0df | 2370 | |
0c116cad | 2371 | put_rpccred(cred); |
3e60ffdd CL |
2372 | } |
2373 | ||
2374 | /** | |
2375 | * nfs41_check_open_stateid - possibly free an open stateid | |
2376 | * | |
2377 | * @state: NFSv4 state for an inode | |
2378 | * | |
2379 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2380 | * Otherwise a negative NFS4ERR value is returned. | |
2381 | */ | |
2382 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2383 | { | |
2384 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2385 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2386 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2387 | int status; |
2388 | ||
2389 | /* If a state reset has been done, test_stateid is unneeded */ | |
2390 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2391 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2392 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2393 | return -NFS4ERR_BAD_STATEID; | |
2394 | ||
ab7cb0df | 2395 | status = nfs41_test_stateid(server, stateid, cred); |
08cb47fa | 2396 | trace_nfs4_test_open_stateid(state, NULL, status); |
3e60ffdd CL |
2397 | if (status != NFS_OK) { |
2398 | /* Free the stateid unless the server explicitly | |
2399 | * informs us the stateid is unrecognized. */ | |
2400 | if (status != -NFS4ERR_BAD_STATEID) | |
ab7cb0df | 2401 | nfs41_free_stateid(server, stateid, cred); |
3e60ffdd CL |
2402 | |
2403 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2404 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2405 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2406 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2407 | } |
2408 | return status; | |
2409 | } | |
2410 | ||
2411 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2412 | { | |
eb64cf96 | 2413 | int status; |
b01dd1d8 | 2414 | |
0c116cad | 2415 | nfs41_check_delegation_stateid(state); |
3e60ffdd | 2416 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2417 | if (status != NFS_OK) |
2418 | status = nfs4_open_expired(sp, state); | |
2419 | return status; | |
f062eb6c BS |
2420 | } |
2421 | #endif | |
2422 | ||
aa53ed54 JL |
2423 | /* |
2424 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2425 | * fields corresponding to attributes that were used to store the verifier. | |
2426 | * Make sure we clobber those fields in the later setattr call | |
2427 | */ | |
5334c5bd KM |
2428 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2429 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2430 | { |
5334c5bd KM |
2431 | const u32 *attrset = opendata->o_res.attrset; |
2432 | ||
2433 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2434 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2435 | sattr->ia_valid |= ATTR_ATIME; | |
2436 | ||
5334c5bd | 2437 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2438 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2439 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2440 | |
2441 | /* Except MODE, it seems harmless of setting twice. */ | |
2442 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2443 | sattr->ia_valid &= ~ATTR_MODE; | |
2444 | ||
2445 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2446 | *label = NULL; | |
aa53ed54 JL |
2447 | } |
2448 | ||
c21443c2 TM |
2449 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2450 | fmode_t fmode, | |
2451 | int flags, | |
3efb9722 | 2452 | struct nfs_open_context *ctx) |
c21443c2 TM |
2453 | { |
2454 | struct nfs4_state_owner *sp = opendata->owner; | |
2455 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2456 | struct dentry *dentry; |
c21443c2 TM |
2457 | struct nfs4_state *state; |
2458 | unsigned int seq; | |
2459 | int ret; | |
2460 | ||
2461 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2462 | ||
2463 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2464 | if (ret != 0) |
c21443c2 TM |
2465 | goto out; |
2466 | ||
2467 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2468 | ret = PTR_ERR(state); | |
2469 | if (IS_ERR(state)) | |
2470 | goto out; | |
2471 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2472 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
2473 | ||
275bb307 | 2474 | dentry = opendata->dentry; |
2b0143b5 | 2475 | if (d_really_is_negative(dentry)) { |
668d0cd5 | 2476 | struct dentry *alias; |
275bb307 | 2477 | d_drop(dentry); |
668d0cd5 AV |
2478 | alias = d_exact_alias(dentry, state->inode); |
2479 | if (!alias) | |
2480 | alias = d_splice_alias(igrab(state->inode), dentry); | |
2481 | /* d_splice_alias() can't fail here - it's a non-directory */ | |
2482 | if (alias) { | |
275bb307 | 2483 | dput(ctx->dentry); |
668d0cd5 | 2484 | ctx->dentry = dentry = alias; |
275bb307 TM |
2485 | } |
2486 | nfs_set_verifier(dentry, | |
2b0143b5 | 2487 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2488 | } |
2489 | ||
c21443c2 TM |
2490 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2491 | if (ret != 0) | |
2492 | goto out; | |
2493 | ||
3efb9722 | 2494 | ctx->state = state; |
2b0143b5 | 2495 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2496 | nfs_inode_attach_open_context(ctx); |
2497 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2498 | nfs4_schedule_stateid_recovery(server, state); | |
2499 | } | |
c21443c2 TM |
2500 | out: |
2501 | return ret; | |
2502 | } | |
2503 | ||
1da177e4 | 2504 | /* |
24ac23ab | 2505 | * Returns a referenced nfs4_state |
1da177e4 | 2506 | */ |
82be417a | 2507 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2508 | struct nfs_open_context *ctx, |
82be417a AA |
2509 | int flags, |
2510 | struct iattr *sattr, | |
5bc2afc2 TM |
2511 | struct nfs4_label *label, |
2512 | int *opened) | |
1da177e4 LT |
2513 | { |
2514 | struct nfs4_state_owner *sp; | |
2515 | struct nfs4_state *state = NULL; | |
2516 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2517 | struct nfs4_opendata *opendata; |
4197a055 TM |
2518 | struct dentry *dentry = ctx->dentry; |
2519 | struct rpc_cred *cred = ctx->cred; | |
2520 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2521 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2522 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2523 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2524 | int status; |
1da177e4 LT |
2525 | |
2526 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2527 | status = -ENOMEM; |
d1e284d5 TM |
2528 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2529 | if (sp == NULL) { | |
1da177e4 LT |
2530 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2531 | goto out_err; | |
2532 | } | |
58d9714a TM |
2533 | status = nfs4_recover_expired_lease(server); |
2534 | if (status != 0) | |
b4454fe1 | 2535 | goto err_put_state_owner; |
2b0143b5 DH |
2536 | if (d_really_is_positive(dentry)) |
2537 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2538 | status = -ENOMEM; |
2b0143b5 | 2539 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2540 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2541 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2542 | label, claim, GFP_KERNEL); |
e56e0b78 | 2543 | if (opendata == NULL) |
95d35cb4 | 2544 | goto err_put_state_owner; |
1da177e4 | 2545 | |
14c43f76 DQ |
2546 | if (label) { |
2547 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2548 | if (IS_ERR(olabel)) { | |
2549 | status = PTR_ERR(olabel); | |
2550 | goto err_opendata_put; | |
2551 | } | |
2552 | } | |
2553 | ||
e911b815 TM |
2554 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2555 | if (!opendata->f_attr.mdsthreshold) { | |
2556 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2557 | if (!opendata->f_attr.mdsthreshold) | |
2558 | goto err_free_label; | |
2559 | } | |
1549210f | 2560 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2561 | } |
2b0143b5 DH |
2562 | if (d_really_is_positive(dentry)) |
2563 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2564 | |
3efb9722 | 2565 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2566 | if (status != 0) |
14c43f76 | 2567 | goto err_free_label; |
3efb9722 | 2568 | state = ctx->state; |
6168f62c | 2569 | |
efcbc04e | 2570 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2571 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2572 | nfs4_exclusive_attrset(opendata, sattr, &label); |
a1d1c4f1 TM |
2573 | /* |
2574 | * send create attributes which was not set by open | |
2575 | * with an extra setattr. | |
2576 | */ | |
2577 | if (sattr->ia_valid & NFS4_VALID_ATTRS) { | |
2578 | nfs_fattr_init(opendata->o_res.f_attr); | |
2579 | status = nfs4_do_setattr(state->inode, cred, | |
2580 | opendata->o_res.f_attr, sattr, | |
2581 | state, label, olabel); | |
2582 | if (status == 0) { | |
2583 | nfs_setattr_update_inode(state->inode, sattr, | |
2584 | opendata->o_res.f_attr); | |
2585 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); | |
2586 | } | |
1775fd3e | 2587 | } |
0ab64e0e | 2588 | } |
c5c3fb5f | 2589 | if (opened && opendata->file_created) |
5bc2afc2 | 2590 | *opened |= FILE_CREATED; |
82be417a | 2591 | |
e911b815 | 2592 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2593 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2594 | opendata->f_attr.mdsthreshold = NULL; |
2595 | } | |
82be417a | 2596 | |
14c43f76 DQ |
2597 | nfs4_label_free(olabel); |
2598 | ||
c6d00e63 | 2599 | nfs4_opendata_put(opendata); |
1da177e4 | 2600 | nfs4_put_state_owner(sp); |
1da177e4 | 2601 | return 0; |
14c43f76 DQ |
2602 | err_free_label: |
2603 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2604 | err_opendata_put: |
2605 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2606 | err_put_state_owner: |
2607 | nfs4_put_state_owner(sp); | |
1da177e4 | 2608 | out_err: |
1da177e4 LT |
2609 | return status; |
2610 | } | |
2611 | ||
2612 | ||
82be417a | 2613 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2614 | struct nfs_open_context *ctx, |
82be417a AA |
2615 | int flags, |
2616 | struct iattr *sattr, | |
5bc2afc2 TM |
2617 | struct nfs4_label *label, |
2618 | int *opened) | |
1da177e4 | 2619 | { |
49f9a0fa | 2620 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2621 | struct nfs4_exception exception = { }; |
2622 | struct nfs4_state *res; | |
2623 | int status; | |
2624 | ||
2625 | do { | |
5bc2afc2 | 2626 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2627 | res = ctx->state; |
42113a75 | 2628 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2629 | if (status == 0) |
2630 | break; | |
2631 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2632 | * book-keeping w.r.t. state-changing operations | |
2633 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2634 | * It is actually a sign of a bug on the client or on the server. | |
2635 | * | |
2636 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2637 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2638 | * have unhashed the old state_owner for us, and that we can |
2639 | * therefore safely retry using a new one. We should still warn | |
2640 | * the user though... | |
2641 | */ | |
2642 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2643 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2644 | " returned a bad sequence-id error!\n", |
2645 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2646 | exception.retry = 1; |
2647 | continue; | |
2648 | } | |
550f5747 TM |
2649 | /* |
2650 | * BAD_STATEID on OPEN means that the server cancelled our | |
2651 | * state before it received the OPEN_CONFIRM. | |
2652 | * Recover by retrying the request as per the discussion | |
2653 | * on Page 181 of RFC3530. | |
2654 | */ | |
2655 | if (status == -NFS4ERR_BAD_STATEID) { | |
2656 | exception.retry = 1; | |
2657 | continue; | |
2658 | } | |
aac00a8d TM |
2659 | if (status == -EAGAIN) { |
2660 | /* We must have found a delegation */ | |
2661 | exception.retry = 1; | |
2662 | continue; | |
2663 | } | |
49f9a0fa TM |
2664 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2665 | continue; | |
2666 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2667 | status, &exception)); |
2668 | } while (exception.retry); | |
2669 | return res; | |
2670 | } | |
2671 | ||
659bfcd6 TM |
2672 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2673 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2674 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2675 | struct nfs4_label *olabel) | |
1da177e4 | 2676 | { |
3e4f6290 | 2677 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2678 | struct nfs_setattrargs arg = { |
3e4f6290 | 2679 | .fh = NFS_FH(inode), |
1da177e4 LT |
2680 | .iap = sattr, |
2681 | .server = server, | |
2682 | .bitmask = server->attr_bitmask, | |
1775fd3e | 2683 | .label = ilabel, |
1da177e4 LT |
2684 | }; |
2685 | struct nfs_setattrres res = { | |
2686 | .fattr = fattr, | |
1775fd3e | 2687 | .label = olabel, |
1da177e4 LT |
2688 | .server = server, |
2689 | }; | |
2690 | struct rpc_message msg = { | |
659bfcd6 TM |
2691 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2692 | .rpc_argp = &arg, | |
2693 | .rpc_resp = &res, | |
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 | |
aa9c2669 DQ |
2702 | arg.bitmask = nfs4_bitmask(server, ilabel); |
2703 | if (ilabel) | |
2704 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2705 | ||
0e574af1 | 2706 | nfs_fattr_init(fattr); |
1da177e4 | 2707 | |
ee3ae84e TM |
2708 | /* Servers should only apply open mode checks for file size changes */ |
2709 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2710 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2711 | ||
abf4e13c | 2712 | if (nfs4_copy_delegation_stateid(inode, fmode, &arg.stateid, &delegation_cred)) { |
ee3ae84e | 2713 | /* Use that stateid */ |
0418dae1 | 2714 | } else if (truncate && state != NULL) { |
2a369153 TM |
2715 | struct nfs_lockowner lockowner = { |
2716 | .l_owner = current->files, | |
2717 | .l_pid = current->tgid, | |
2718 | }; | |
0418dae1 TM |
2719 | if (!nfs4_valid_open_stateid(state)) |
2720 | return -EBADF; | |
abf4e13c TM |
2721 | if (nfs4_select_rw_stateid(state, FMODE_WRITE, &lockowner, |
2722 | &arg.stateid, &delegation_cred) == -EIO) | |
0418dae1 | 2723 | return -EBADF; |
08e9eac4 | 2724 | } else |
f597c537 | 2725 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
abf4e13c TM |
2726 | if (delegation_cred) |
2727 | msg.rpc_cred = delegation_cred; | |
1da177e4 | 2728 | |
7c513058 | 2729 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
abf4e13c TM |
2730 | |
2731 | put_rpccred(delegation_cred); | |
26e976a8 TM |
2732 | if (status == 0 && state != NULL) |
2733 | renew_lease(server, timestamp); | |
48c9579a | 2734 | trace_nfs4_setattr(inode, &arg.stateid, status); |
65e4308d | 2735 | return status; |
1da177e4 LT |
2736 | } |
2737 | ||
659bfcd6 TM |
2738 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2739 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2740 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2741 | struct nfs4_label *olabel) | |
1da177e4 | 2742 | { |
3e4f6290 | 2743 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2744 | struct nfs4_exception exception = { |
2745 | .state = state, | |
3114ea7a | 2746 | .inode = inode, |
a1d0b5ee | 2747 | }; |
1da177e4 LT |
2748 | int err; |
2749 | do { | |
1775fd3e | 2750 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel); |
451146be TM |
2751 | switch (err) { |
2752 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2753 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2754 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2755 | "applying open mode checks to " | |
2756 | "a SETATTR that is not " | |
2757 | "changing file size.\n", | |
2758 | server->nfs_client->cl_hostname); | |
2759 | } | |
451146be TM |
2760 | if (state && !(state->state & FMODE_WRITE)) { |
2761 | err = -EBADF; | |
2762 | if (sattr->ia_valid & ATTR_OPEN) | |
2763 | err = -EACCES; | |
2764 | goto out; | |
2765 | } | |
2766 | } | |
2767 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2768 | } while (exception.retry); |
451146be | 2769 | out: |
1da177e4 LT |
2770 | return err; |
2771 | } | |
2772 | ||
500d701f PT |
2773 | static bool |
2774 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
2775 | { | |
2776 | if (inode == NULL || !nfs_have_layout(inode)) | |
2777 | return false; | |
2778 | ||
2779 | return pnfs_wait_on_layoutreturn(inode, task); | |
2780 | } | |
2781 | ||
1da177e4 LT |
2782 | struct nfs4_closedata { |
2783 | struct inode *inode; | |
2784 | struct nfs4_state *state; | |
2785 | struct nfs_closeargs arg; | |
2786 | struct nfs_closeres res; | |
516a6af6 | 2787 | struct nfs_fattr fattr; |
26e976a8 | 2788 | unsigned long timestamp; |
f7e8917a FI |
2789 | bool roc; |
2790 | u32 roc_barrier; | |
1da177e4 LT |
2791 | }; |
2792 | ||
963d8fe5 | 2793 | static void nfs4_free_closedata(void *data) |
9512135d | 2794 | { |
963d8fe5 TM |
2795 | struct nfs4_closedata *calldata = data; |
2796 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2797 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2798 | |
f7e8917a FI |
2799 | if (calldata->roc) |
2800 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2801 | nfs4_put_open_state(calldata->state); |
2802 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2803 | nfs4_put_state_owner(sp); |
322b2b90 | 2804 | nfs_sb_deactive(sb); |
9512135d TM |
2805 | kfree(calldata); |
2806 | } | |
2807 | ||
963d8fe5 | 2808 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2809 | { |
963d8fe5 | 2810 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2811 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2812 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2813 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2814 | |
a3ca5651 | 2815 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2816 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2817 | return; | |
42113a75 | 2818 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
2819 | /* hmm. we are done with the inode, and in the process of freeing |
2820 | * the state_owner. we keep this around to process errors | |
2821 | */ | |
1da177e4 LT |
2822 | switch (task->tk_status) { |
2823 | case 0: | |
412f6c4c | 2824 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 2825 | if (calldata->roc) |
f7e8917a FI |
2826 | pnfs_roc_set_barrier(state->inode, |
2827 | calldata->roc_barrier); | |
26e976a8 | 2828 | renew_lease(server, calldata->timestamp); |
412f6c4c | 2829 | break; |
69794ad7 | 2830 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 2831 | case -NFS4ERR_STALE_STATEID: |
9e33bed5 TM |
2832 | case -NFS4ERR_OLD_STATEID: |
2833 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2834 | case -NFS4ERR_EXPIRED: |
566fcec6 | 2835 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 2836 | &state->open_stateid)) { |
566fcec6 TM |
2837 | rpc_restart_call_prepare(task); |
2838 | goto out_release; | |
2839 | } | |
dc0b027d | 2840 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2841 | break; |
1da177e4 | 2842 | default: |
8478eaa1 | 2843 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 2844 | rpc_restart_call_prepare(task); |
69794ad7 TM |
2845 | goto out_release; |
2846 | } | |
1da177e4 | 2847 | } |
4a1e2feb TM |
2848 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
2849 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 2850 | out_release: |
72211dbe | 2851 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2852 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2853 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2854 | } |
2855 | ||
4ce70ada | 2856 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2857 | { |
4ce70ada | 2858 | struct nfs4_closedata *calldata = data; |
9512135d | 2859 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2860 | struct inode *inode = calldata->inode; |
aee7af35 | 2861 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 2862 | int call_close = 0; |
9512135d | 2863 | |
a3ca5651 | 2864 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2865 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2866 | goto out_wait; |
003707c7 | 2867 | |
88069f77 | 2868 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 2869 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
2870 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
2871 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2872 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 2873 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 2874 | /* Calculate the change in open mode */ |
cd9288ff | 2875 | calldata->arg.fmode = 0; |
e7616923 | 2876 | if (state->n_rdwr == 0) { |
cd9288ff TM |
2877 | if (state->n_rdonly == 0) |
2878 | call_close |= is_rdonly; | |
2879 | else if (is_rdonly) | |
2880 | calldata->arg.fmode |= FMODE_READ; | |
2881 | if (state->n_wronly == 0) | |
2882 | call_close |= is_wronly; | |
2883 | else if (is_wronly) | |
2884 | calldata->arg.fmode |= FMODE_WRITE; | |
e547f262 TM |
2885 | if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE)) |
2886 | call_close |= is_rdwr; | |
cd9288ff TM |
2887 | } else if (is_rdwr) |
2888 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
2889 | ||
5d422301 TM |
2890 | if (!nfs4_valid_open_stateid(state)) |
2891 | call_close = 0; | |
4cecb76f | 2892 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2893 | |
2894 | if (!call_close) { | |
963d8fe5 | 2895 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2896 | goto out_no_action; |
9512135d | 2897 | } |
88069f77 | 2898 | |
500d701f PT |
2899 | if (nfs4_wait_on_layoutreturn(inode, task)) { |
2900 | nfs_release_seqid(calldata->arg.seqid); | |
2901 | goto out_wait; | |
2902 | } | |
2903 | ||
3c13cb5b | 2904 | if (calldata->arg.fmode == 0) |
88069f77 | 2905 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
2906 | if (calldata->roc) |
2907 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
2908 | ||
6ae37339 TM |
2909 | calldata->arg.share_access = |
2910 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
2911 | calldata->arg.fmode, 0); | |
88069f77 | 2912 | |
516a6af6 | 2913 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2914 | calldata->timestamp = jiffies; |
7fdab069 | 2915 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2916 | &calldata->arg.seq_args, |
2917 | &calldata->res.seq_res, | |
2240a9e2 TM |
2918 | task) != 0) |
2919 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2920 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2921 | return; |
2922 | out_no_action: | |
2923 | task->tk_action = NULL; | |
2924 | out_wait: | |
2925 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2926 | } |
2927 | ||
963d8fe5 | 2928 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2929 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2930 | .rpc_call_done = nfs4_close_done, |
2931 | .rpc_release = nfs4_free_closedata, | |
2932 | }; | |
2933 | ||
fe08c546 PT |
2934 | static bool nfs4_roc(struct inode *inode) |
2935 | { | |
40dd4b7a | 2936 | if (!nfs_have_layout(inode)) |
fe08c546 | 2937 | return false; |
fe08c546 PT |
2938 | return pnfs_roc(inode); |
2939 | } | |
2940 | ||
1da177e4 LT |
2941 | /* |
2942 | * It is possible for data to be read/written from a mem-mapped file | |
2943 | * after the sys_close call (which hits the vfs layer as a flush). | |
2944 | * This means that we can't safely call nfsv4 close on a file until | |
2945 | * the inode is cleared. This in turn means that we are not good | |
2946 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2947 | * share state even when we are done with one of the three share | |
2948 | * stateid's in the inode. | |
2949 | * | |
2950 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2951 | */ | |
1f7977c1 | 2952 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2953 | { |
4a35bd41 | 2954 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 2955 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 2956 | struct nfs4_closedata *calldata; |
b39e625b TM |
2957 | struct nfs4_state_owner *sp = state->owner; |
2958 | struct rpc_task *task; | |
5138fde0 TM |
2959 | struct rpc_message msg = { |
2960 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2961 | .rpc_cred = state->owner->so_cred, | |
2962 | }; | |
c970aa85 TM |
2963 | struct rpc_task_setup task_setup_data = { |
2964 | .rpc_client = server->client, | |
5138fde0 | 2965 | .rpc_message = &msg, |
c970aa85 | 2966 | .callback_ops = &nfs4_close_ops, |
101070ca | 2967 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2968 | .flags = RPC_TASK_ASYNC, |
2969 | }; | |
9512135d | 2970 | int status = -ENOMEM; |
1da177e4 | 2971 | |
fa940720 WAA |
2972 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
2973 | &task_setup_data.rpc_client, &msg); | |
2974 | ||
8535b2be | 2975 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2976 | if (calldata == NULL) |
9512135d | 2977 | goto out; |
a9c92d6b | 2978 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2979 | calldata->inode = state->inode; |
1da177e4 | 2980 | calldata->state = state; |
4a35bd41 | 2981 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 2982 | /* Serialization for the sequence id */ |
63f5f796 TM |
2983 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
2984 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 2985 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 2986 | goto out_free_calldata; |
dc0b027d | 2987 | calldata->arg.fmode = 0; |
a65318bf | 2988 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2989 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2990 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2991 | calldata->res.server = server; |
fe08c546 | 2992 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 2993 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2994 | |
1174dd1f TM |
2995 | msg.rpc_argp = &calldata->arg; |
2996 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2997 | task_setup_data.callback_data = calldata; |
2998 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2999 | if (IS_ERR(task)) |
3000 | return PTR_ERR(task); | |
a49c3c77 TM |
3001 | status = 0; |
3002 | if (wait) | |
3003 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 3004 | rpc_put_task(task); |
a49c3c77 | 3005 | return status; |
9512135d TM |
3006 | out_free_calldata: |
3007 | kfree(calldata); | |
3008 | out: | |
b39e625b TM |
3009 | nfs4_put_open_state(state); |
3010 | nfs4_put_state_owner(sp); | |
9512135d | 3011 | return status; |
1da177e4 LT |
3012 | } |
3013 | ||
2b484297 | 3014 | static struct inode * |
5bc2afc2 TM |
3015 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
3016 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 3017 | { |
1da177e4 | 3018 | struct nfs4_state *state; |
aa9c2669 DQ |
3019 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
3020 | ||
3021 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 3022 | |
565277f6 | 3023 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 3024 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
3025 | |
3026 | nfs4_label_release_security(label); | |
3027 | ||
f46e0bd3 TM |
3028 | if (IS_ERR(state)) |
3029 | return ERR_CAST(state); | |
275bb307 | 3030 | return state->inode; |
1da177e4 LT |
3031 | } |
3032 | ||
1185a552 | 3033 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3034 | { |
3035 | if (ctx->state == NULL) | |
3036 | return; | |
3037 | if (is_sync) | |
643168c2 | 3038 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 3039 | else |
643168c2 | 3040 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 3041 | } |
1da177e4 | 3042 | |
b944dba3 TM |
3043 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3044 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 3045 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 3046 | |
1da177e4 LT |
3047 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3048 | { | |
8c61282f | 3049 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3050 | struct nfs4_server_caps_arg args = { |
3051 | .fhandle = fhandle, | |
8c61282f | 3052 | .bitmask = bitmask, |
43652ad5 | 3053 | }; |
1da177e4 LT |
3054 | struct nfs4_server_caps_res res = {}; |
3055 | struct rpc_message msg = { | |
3056 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3057 | .rpc_argp = &args, |
1da177e4 LT |
3058 | .rpc_resp = &res, |
3059 | }; | |
3060 | int status; | |
3061 | ||
8c61282f KM |
3062 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3063 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3064 | FATTR4_WORD0_LINK_SUPPORT | | |
3065 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3066 | FATTR4_WORD0_ACLSUPPORT; | |
3067 | if (minorversion) | |
3068 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3069 | ||
7c513058 | 3070 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3071 | if (status == 0) { |
b944dba3 | 3072 | /* Sanity check the server answers */ |
8c61282f | 3073 | switch (minorversion) { |
b944dba3 TM |
3074 | case 0: |
3075 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3076 | res.attr_bitmask[2] = 0; | |
3077 | break; | |
3078 | case 1: | |
3079 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3080 | break; | |
3081 | case 2: | |
3082 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3083 | } | |
1da177e4 | 3084 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
3085 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
3086 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
3087 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
3088 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
3089 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
3090 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
3091 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3092 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3093 | server->caps |= NFS_CAP_ACLS; |
3094 | if (res.has_links != 0) | |
3095 | server->caps |= NFS_CAP_HARDLINKS; | |
3096 | if (res.has_symlinks != 0) | |
3097 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
3098 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
3099 | server->caps |= NFS_CAP_FILEID; | |
3100 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
3101 | server->caps |= NFS_CAP_MODE; | |
3102 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
3103 | server->caps |= NFS_CAP_NLINK; | |
3104 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
3105 | server->caps |= NFS_CAP_OWNER; | |
3106 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
3107 | server->caps |= NFS_CAP_OWNER_GROUP; | |
3108 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
3109 | server->caps |= NFS_CAP_ATIME; | |
3110 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
3111 | server->caps |= NFS_CAP_CTIME; | |
3112 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
3113 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
3114 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3115 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3116 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3117 | #endif | |
3118 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
3119 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3120 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3121 | |
a65318bf TM |
3122 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3123 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3124 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3125 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
3126 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3127 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 3128 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3129 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3130 | } |
cccef3b9 | 3131 | |
1da177e4 LT |
3132 | return status; |
3133 | } | |
3134 | ||
55a97593 | 3135 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
3136 | { |
3137 | struct nfs4_exception exception = { }; | |
3138 | int err; | |
3139 | do { | |
3140 | err = nfs4_handle_exception(server, | |
3141 | _nfs4_server_capabilities(server, fhandle), | |
3142 | &exception); | |
3143 | } while (exception.retry); | |
3144 | return err; | |
3145 | } | |
3146 | ||
3147 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3148 | struct nfs_fsinfo *info) | |
3149 | { | |
aa9c2669 | 3150 | u32 bitmask[3]; |
1da177e4 | 3151 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3152 | .bitmask = bitmask, |
1da177e4 LT |
3153 | }; |
3154 | struct nfs4_lookup_res res = { | |
3155 | .server = server, | |
0e574af1 | 3156 | .fattr = info->fattr, |
1da177e4 LT |
3157 | .fh = fhandle, |
3158 | }; | |
3159 | struct rpc_message msg = { | |
3160 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3161 | .rpc_argp = &args, | |
3162 | .rpc_resp = &res, | |
3163 | }; | |
008f55d0 | 3164 | |
aa9c2669 DQ |
3165 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3166 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3167 | /* | |
3168 | * Process the label in the upcoming getfattr | |
3169 | */ | |
3170 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3171 | ||
0e574af1 | 3172 | nfs_fattr_init(info->fattr); |
7c513058 | 3173 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3174 | } |
3175 | ||
3176 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3177 | struct nfs_fsinfo *info) | |
3178 | { | |
3179 | struct nfs4_exception exception = { }; | |
3180 | int err; | |
3181 | do { | |
fb8a5ba8 | 3182 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3183 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3184 | switch (err) { |
3185 | case 0: | |
3186 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3187 | goto out; |
fb8a5ba8 BS |
3188 | default: |
3189 | err = nfs4_handle_exception(server, err, &exception); | |
3190 | } | |
1da177e4 | 3191 | } while (exception.retry); |
05e9cfb4 | 3192 | out: |
1da177e4 LT |
3193 | return err; |
3194 | } | |
3195 | ||
8f70e95f BS |
3196 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3197 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3198 | { | |
c2190661 TM |
3199 | struct rpc_auth_create_args auth_args = { |
3200 | .pseudoflavor = flavor, | |
3201 | }; | |
8f70e95f BS |
3202 | struct rpc_auth *auth; |
3203 | int ret; | |
3204 | ||
c2190661 | 3205 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3206 | if (IS_ERR(auth)) { |
75bc8821 | 3207 | ret = -EACCES; |
8f70e95f BS |
3208 | goto out; |
3209 | } | |
3210 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3211 | out: |
3212 | return ret; | |
3213 | } | |
3214 | ||
9a744ba3 CL |
3215 | /* |
3216 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3217 | * | |
3218 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3219 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3220 | * | |
3221 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3222 | * negative errno value. | |
3223 | */ | |
801a16dc | 3224 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3225 | struct nfs_fsinfo *info) |
1da177e4 | 3226 | { |
9a744ba3 CL |
3227 | /* Per 3530bis 15.33.5 */ |
3228 | static const rpc_authflavor_t flav_array[] = { | |
3229 | RPC_AUTH_GSS_KRB5P, | |
3230 | RPC_AUTH_GSS_KRB5I, | |
3231 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3232 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3233 | RPC_AUTH_NULL, |
3234 | }; | |
3235 | int status = -EPERM; | |
3236 | size_t i; | |
6a1a1e34 | 3237 | |
4d4b69dd WAA |
3238 | if (server->auth_info.flavor_len > 0) { |
3239 | /* try each flavor specified by user */ | |
3240 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3241 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3242 | server->auth_info.flavors[i]); | |
3243 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3244 | continue; | |
3245 | break; | |
3246 | } | |
3247 | } else { | |
3248 | /* no flavors specified by user, try default list */ | |
3249 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3250 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3251 | flav_array[i]); | |
3252 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3253 | continue; | |
3254 | break; | |
3255 | } | |
8f70e95f | 3256 | } |
9a744ba3 | 3257 | |
fb8a5ba8 BS |
3258 | /* |
3259 | * -EACCESS could mean that the user doesn't have correct permissions | |
3260 | * to access the mount. It could also mean that we tried to mount | |
3261 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3262 | * existing mount programs don't handle -EACCES very well so it should | |
3263 | * be mapped to -EPERM instead. | |
3264 | */ | |
3265 | if (status == -EACCES) | |
3266 | status = -EPERM; | |
801a16dc BS |
3267 | return status; |
3268 | } | |
3269 | ||
2ed4b95b CL |
3270 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
3271 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
3272 | { | |
3273 | int mv = server->nfs_client->cl_minorversion; | |
3274 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
3275 | } | |
3276 | ||
3277 | /** | |
3278 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3279 | * @server: initialized nfs_server handle | |
3280 | * @fhandle: we fill in the pseudo-fs root file handle | |
3281 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3282 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3283 | * |
3284 | * Returns zero on success, or a negative errno. | |
801a16dc | 3285 | */ |
3028eb2b | 3286 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3287 | struct nfs_fsinfo *info, |
3288 | bool auth_probe) | |
801a16dc | 3289 | { |
c7757074 | 3290 | int status = 0; |
2ed4b95b | 3291 | |
c7757074 | 3292 | if (!auth_probe) |
5e6b1990 | 3293 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3294 | |
3295 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
2ed4b95b CL |
3296 | status = nfs4_do_find_root_sec(server, fhandle, info); |
3297 | ||
1da177e4 LT |
3298 | if (status == 0) |
3299 | status = nfs4_server_capabilities(server, fhandle); | |
3300 | if (status == 0) | |
3301 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3302 | |
c12e87f4 | 3303 | return nfs4_map_errors(status); |
1da177e4 LT |
3304 | } |
3305 | ||
bae36241 BS |
3306 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3307 | struct nfs_fsinfo *info) | |
3308 | { | |
3309 | int error; | |
3310 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3311 | struct nfs4_label *label = NULL; |
bae36241 BS |
3312 | |
3313 | error = nfs4_server_capabilities(server, mntfh); | |
3314 | if (error < 0) { | |
3315 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3316 | return error; | |
3317 | } | |
3318 | ||
14c43f76 DQ |
3319 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3320 | if (IS_ERR(label)) | |
3321 | return PTR_ERR(label); | |
3322 | ||
1775fd3e | 3323 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3324 | if (error < 0) { |
3325 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3326 | goto err_free_label; |
bae36241 BS |
3327 | } |
3328 | ||
3329 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3330 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3331 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3332 | ||
14c43f76 DQ |
3333 | err_free_label: |
3334 | nfs4_label_free(label); | |
3335 | ||
bae36241 BS |
3336 | return error; |
3337 | } | |
3338 | ||
6b97fd3d MN |
3339 | /* |
3340 | * Get locations and (maybe) other attributes of a referral. | |
3341 | * Note that we'll actually follow the referral later when | |
3342 | * we detect fsid mismatch in inode revalidation | |
3343 | */ | |
f05d147f BS |
3344 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3345 | const struct qstr *name, struct nfs_fattr *fattr, | |
3346 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3347 | { |
3348 | int status = -ENOMEM; | |
3349 | struct page *page = NULL; | |
3350 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3351 | |
3352 | page = alloc_page(GFP_KERNEL); | |
3353 | if (page == NULL) | |
3354 | goto out; | |
3355 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3356 | if (locations == NULL) | |
3357 | goto out; | |
3358 | ||
f05d147f | 3359 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3360 | if (status != 0) |
3361 | goto out; | |
519ae255 CL |
3362 | |
3363 | /* | |
3364 | * If the fsid didn't change, this is a migration event, not a | |
3365 | * referral. Cause us to drop into the exception handler, which | |
3366 | * will kick off migration recovery. | |
3367 | */ | |
6b97fd3d | 3368 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3369 | dprintk("%s: server did not return a different fsid for" |
3370 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3371 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3372 | goto out; |
3373 | } | |
533eb461 AA |
3374 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3375 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3376 | |
533eb461 | 3377 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3378 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3379 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3380 | out: | |
3381 | if (page) | |
3382 | __free_page(page); | |
5d7ca35a | 3383 | kfree(locations); |
6b97fd3d MN |
3384 | return status; |
3385 | } | |
3386 | ||
1775fd3e DQ |
3387 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3388 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3389 | { |
3390 | struct nfs4_getattr_arg args = { | |
3391 | .fh = fhandle, | |
3392 | .bitmask = server->attr_bitmask, | |
3393 | }; | |
3394 | struct nfs4_getattr_res res = { | |
3395 | .fattr = fattr, | |
1775fd3e | 3396 | .label = label, |
1da177e4 LT |
3397 | .server = server, |
3398 | }; | |
3399 | struct rpc_message msg = { | |
3400 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3401 | .rpc_argp = &args, | |
3402 | .rpc_resp = &res, | |
3403 | }; | |
aa9c2669 DQ |
3404 | |
3405 | args.bitmask = nfs4_bitmask(server, label); | |
3406 | ||
0e574af1 | 3407 | nfs_fattr_init(fattr); |
7c513058 | 3408 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3409 | } |
3410 | ||
1775fd3e DQ |
3411 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3412 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3413 | { |
3414 | struct nfs4_exception exception = { }; | |
3415 | int err; | |
3416 | do { | |
b5f875a9 TM |
3417 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3418 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3419 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3420 | &exception); |
3421 | } while (exception.retry); | |
3422 | return err; | |
3423 | } | |
3424 | ||
3425 | /* | |
3426 | * The file is not closed if it is opened due to the a request to change | |
3427 | * the size of the file. The open call will not be needed once the | |
3428 | * VFS layer lookup-intents are implemented. | |
3429 | * | |
3430 | * Close is called when the inode is destroyed. | |
3431 | * If we haven't opened the file for O_WRONLY, we | |
3432 | * need to in the size_change case to obtain a stateid. | |
3433 | * | |
3434 | * Got race? | |
3435 | * Because OPEN is always done by name in nfsv4, it is | |
3436 | * possible that we opened a different file by the same | |
3437 | * name. We can recognize this race condition, but we | |
3438 | * can't do anything about it besides returning an error. | |
3439 | * | |
3440 | * This will be fixed with VFS changes (lookup-intent). | |
3441 | */ | |
3442 | static int | |
3443 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3444 | struct iattr *sattr) | |
3445 | { | |
2b0143b5 | 3446 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3447 | struct rpc_cred *cred = NULL; |
d530838b | 3448 | struct nfs4_state *state = NULL; |
14c43f76 | 3449 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3450 | int status; |
3451 | ||
88ac815c PT |
3452 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3453 | sattr->ia_valid & ATTR_SIZE && | |
3454 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3455 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3456 | |
0e574af1 | 3457 | nfs_fattr_init(fattr); |
1da177e4 | 3458 | |
2669940d AA |
3459 | /* Deal with open(O_TRUNC) */ |
3460 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3461 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3462 | |
3463 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3464 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3465 | return 0; |
3466 | ||
d530838b | 3467 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3468 | if (sattr->ia_valid & ATTR_FILE) { |
3469 | struct nfs_open_context *ctx; | |
3470 | ||
3471 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3472 | if (ctx) { |
3473 | cred = ctx->cred; | |
3474 | state = ctx->state; | |
3475 | } | |
659bfcd6 | 3476 | } |
08e9eac4 | 3477 | |
14c43f76 DQ |
3478 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3479 | if (IS_ERR(label)) | |
3480 | return PTR_ERR(label); | |
3481 | ||
3482 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3483 | if (status == 0) { |
f044636d | 3484 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3485 | nfs_setsecurity(inode, fattr, label); |
3486 | } | |
14c43f76 | 3487 | nfs4_label_free(label); |
1da177e4 LT |
3488 | return status; |
3489 | } | |
3490 | ||
0c2e53f1 TM |
3491 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3492 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3493 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3494 | { |
0c2e53f1 | 3495 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3496 | int status; |
3497 | struct nfs4_lookup_arg args = { | |
3498 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3499 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3500 | .name = name, |
3501 | }; | |
3502 | struct nfs4_lookup_res res = { | |
3503 | .server = server, | |
3504 | .fattr = fattr, | |
aa9c2669 | 3505 | .label = label, |
2b3de441 DH |
3506 | .fh = fhandle, |
3507 | }; | |
3508 | struct rpc_message msg = { | |
3509 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3510 | .rpc_argp = &args, | |
3511 | .rpc_resp = &res, | |
3512 | }; | |
3513 | ||
aa9c2669 DQ |
3514 | args.bitmask = nfs4_bitmask(server, label); |
3515 | ||
2b3de441 DH |
3516 | nfs_fattr_init(fattr); |
3517 | ||
1da177e4 | 3518 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3519 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3520 | dprintk("NFS reply lookup: %d\n", status); |
3521 | return status; | |
3522 | } | |
3523 | ||
72de53ec | 3524 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3525 | { |
7ebb9315 | 3526 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3527 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3528 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3529 | fattr->nlink = 2; | |
3530 | } | |
3531 | ||
72de53ec BS |
3532 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
3533 | struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3534 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3535 | { |
3536 | struct nfs4_exception exception = { }; | |
72de53ec | 3537 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3538 | int err; |
3539 | do { | |
1775fd3e | 3540 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3541 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3542 | switch (err) { |
08ef7bd3 | 3543 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3544 | err = -ENOENT; |
3545 | goto out; | |
0c2e53f1 | 3546 | case -NFS4ERR_MOVED: |
f05d147f | 3547 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3548 | if (err == -NFS4ERR_MOVED) |
3549 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3550 | goto out; |
0c2e53f1 | 3551 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3552 | err = -EPERM; |
3553 | if (client != *clnt) | |
3554 | goto out; | |
66b06860 | 3555 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3556 | if (IS_ERR(client)) |
3557 | return PTR_ERR(client); | |
3558 | ||
3559 | exception.retry = 1; | |
3560 | break; | |
3561 | default: | |
3562 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3563 | } |
1da177e4 | 3564 | } while (exception.retry); |
72de53ec BS |
3565 | |
3566 | out: | |
3567 | if (err == 0) | |
3568 | *clnt = client; | |
3569 | else if (client != *clnt) | |
3570 | rpc_shutdown_client(client); | |
3571 | ||
1da177e4 LT |
3572 | return err; |
3573 | } | |
3574 | ||
80a16b21 | 3575 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
1775fd3e DQ |
3576 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3577 | struct nfs4_label *label) | |
72de53ec BS |
3578 | { |
3579 | int status; | |
3580 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3581 | ||
1775fd3e | 3582 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3583 | if (client != NFS_CLIENT(dir)) { |
3584 | rpc_shutdown_client(client); | |
3585 | nfs_fixup_secinfo_attributes(fattr); | |
3586 | } | |
3587 | return status; | |
3588 | } | |
3589 | ||
f05d147f BS |
3590 | struct rpc_clnt * |
3591 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
3592 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
3593 | { | |
b72888cb | 3594 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3595 | int status; |
f05d147f | 3596 | |
1775fd3e | 3597 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3598 | if (status < 0) |
f05d147f | 3599 | return ERR_PTR(status); |
b72888cb | 3600 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3601 | } |
3602 | ||
1da177e4 LT |
3603 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3604 | { | |
76b32999 | 3605 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3606 | struct nfs4_accessargs args = { |
3607 | .fh = NFS_FH(inode), | |
a4980e78 | 3608 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3609 | }; |
3610 | struct nfs4_accessres res = { | |
3611 | .server = server, | |
1da177e4 | 3612 | }; |
1da177e4 LT |
3613 | struct rpc_message msg = { |
3614 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3615 | .rpc_argp = &args, | |
3616 | .rpc_resp = &res, | |
3617 | .rpc_cred = entry->cred, | |
3618 | }; | |
3619 | int mode = entry->mask; | |
aa9c2669 | 3620 | int status = 0; |
1da177e4 LT |
3621 | |
3622 | /* | |
3623 | * Determine which access bits we want to ask for... | |
3624 | */ | |
3625 | if (mode & MAY_READ) | |
3626 | args.access |= NFS4_ACCESS_READ; | |
3627 | if (S_ISDIR(inode->i_mode)) { | |
3628 | if (mode & MAY_WRITE) | |
3629 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3630 | if (mode & MAY_EXEC) | |
3631 | args.access |= NFS4_ACCESS_LOOKUP; | |
3632 | } else { | |
3633 | if (mode & MAY_WRITE) | |
3634 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3635 | if (mode & MAY_EXEC) | |
3636 | args.access |= NFS4_ACCESS_EXECUTE; | |
3637 | } | |
c407d41a TM |
3638 | |
3639 | res.fattr = nfs_alloc_fattr(); | |
3640 | if (res.fattr == NULL) | |
3641 | return -ENOMEM; | |
3642 | ||
7c513058 | 3643 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3644 | if (!status) { |
6168f62c | 3645 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3646 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3647 | } |
c407d41a | 3648 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3649 | return status; |
3650 | } | |
3651 | ||
3652 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3653 | { | |
3654 | struct nfs4_exception exception = { }; | |
3655 | int err; | |
3656 | do { | |
c1578b76 TM |
3657 | err = _nfs4_proc_access(inode, entry); |
3658 | trace_nfs4_access(inode, err); | |
3659 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3660 | &exception); |
3661 | } while (exception.retry); | |
3662 | return err; | |
3663 | } | |
3664 | ||
3665 | /* | |
3666 | * TODO: For the time being, we don't try to get any attributes | |
3667 | * along with any of the zero-copy operations READ, READDIR, | |
3668 | * READLINK, WRITE. | |
3669 | * | |
3670 | * In the case of the first three, we want to put the GETATTR | |
3671 | * after the read-type operation -- this is because it is hard | |
3672 | * to predict the length of a GETATTR response in v4, and thus | |
3673 | * align the READ data correctly. This means that the GETATTR | |
3674 | * may end up partially falling into the page cache, and we should | |
3675 | * shift it into the 'tail' of the xdr_buf before processing. | |
3676 | * To do this efficiently, we need to know the total length | |
3677 | * of data received, which doesn't seem to be available outside | |
3678 | * of the RPC layer. | |
3679 | * | |
3680 | * In the case of WRITE, we also want to put the GETATTR after | |
3681 | * the operation -- in this case because we want to make sure | |
140150db | 3682 | * we get the post-operation mtime and size. |
1da177e4 LT |
3683 | * |
3684 | * Both of these changes to the XDR layer would in fact be quite | |
3685 | * minor, but I decided to leave them for a subsequent patch. | |
3686 | */ | |
3687 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3688 | unsigned int pgbase, unsigned int pglen) | |
3689 | { | |
3690 | struct nfs4_readlink args = { | |
3691 | .fh = NFS_FH(inode), | |
3692 | .pgbase = pgbase, | |
3693 | .pglen = pglen, | |
3694 | .pages = &page, | |
3695 | }; | |
f50c7000 | 3696 | struct nfs4_readlink_res res; |
1da177e4 LT |
3697 | struct rpc_message msg = { |
3698 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3699 | .rpc_argp = &args, | |
f50c7000 | 3700 | .rpc_resp = &res, |
1da177e4 LT |
3701 | }; |
3702 | ||
7c513058 | 3703 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3704 | } |
3705 | ||
3706 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3707 | unsigned int pgbase, unsigned int pglen) | |
3708 | { | |
3709 | struct nfs4_exception exception = { }; | |
3710 | int err; | |
3711 | do { | |
c1578b76 TM |
3712 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3713 | trace_nfs4_readlink(inode, err); | |
3714 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3715 | &exception); |
3716 | } while (exception.retry); | |
3717 | return err; | |
3718 | } | |
3719 | ||
1da177e4 | 3720 | /* |
8867fe58 | 3721 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3722 | */ |
1da177e4 LT |
3723 | static int |
3724 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3725 | int flags) |
1da177e4 | 3726 | { |
aa9c2669 | 3727 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3728 | struct nfs_open_context *ctx; |
1da177e4 | 3729 | struct nfs4_state *state; |
1da177e4 LT |
3730 | int status = 0; |
3731 | ||
8867fe58 MS |
3732 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3733 | if (IS_ERR(ctx)) | |
3734 | return PTR_ERR(ctx); | |
3735 | ||
aa9c2669 DQ |
3736 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3737 | ||
a8a5da99 | 3738 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3739 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3740 | if (IS_ERR(state)) { |
3741 | status = PTR_ERR(state); | |
c0204fd2 | 3742 | goto out; |
1da177e4 | 3743 | } |
1da177e4 | 3744 | out: |
aa9c2669 | 3745 | nfs4_label_release_security(ilabel); |
8867fe58 | 3746 | put_nfs_open_context(ctx); |
1da177e4 LT |
3747 | return status; |
3748 | } | |
3749 | ||
3750 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3751 | { | |
16e42959 | 3752 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3753 | struct nfs_removeargs args = { |
1da177e4 | 3754 | .fh = NFS_FH(dir), |
26fe5750 | 3755 | .name = *name, |
16e42959 | 3756 | }; |
4fdc17b2 | 3757 | struct nfs_removeres res = { |
16e42959 | 3758 | .server = server, |
1da177e4 | 3759 | }; |
1da177e4 | 3760 | struct rpc_message msg = { |
4fdc17b2 TM |
3761 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3762 | .rpc_argp = &args, | |
3763 | .rpc_resp = &res, | |
1da177e4 | 3764 | }; |
778d2817 | 3765 | int status; |
1da177e4 | 3766 | |
7c513058 | 3767 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3768 | if (status == 0) |
16e42959 | 3769 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3770 | return status; |
3771 | } | |
3772 | ||
3773 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3774 | { | |
3775 | struct nfs4_exception exception = { }; | |
3776 | int err; | |
3777 | do { | |
078ea3df TM |
3778 | err = _nfs4_proc_remove(dir, name); |
3779 | trace_nfs4_remove(dir, name, err); | |
3780 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3781 | &exception); |
3782 | } while (exception.retry); | |
3783 | return err; | |
3784 | } | |
3785 | ||
e4eff1a6 | 3786 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3787 | { |
e4eff1a6 TM |
3788 | struct nfs_server *server = NFS_SERVER(dir); |
3789 | struct nfs_removeargs *args = msg->rpc_argp; | |
3790 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3791 | |
e4eff1a6 | 3792 | res->server = server; |
1da177e4 | 3793 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3794 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3795 | |
3796 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3797 | } |
3798 | ||
34e137cc BS |
3799 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3800 | { | |
884be175 | 3801 | nfs4_setup_sequence(NFS_SB(data->dentry->d_sb), |
d9afbd1b TM |
3802 | &data->args.seq_args, |
3803 | &data->res.seq_res, | |
3804 | task); | |
1da177e4 LT |
3805 | } |
3806 | ||
e4eff1a6 | 3807 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3808 | { |
078ea3df TM |
3809 | struct nfs_unlinkdata *data = task->tk_calldata; |
3810 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3811 | |
14516c3a TM |
3812 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3813 | return 0; | |
8478eaa1 N |
3814 | if (nfs4_async_handle_error(task, res->server, NULL, |
3815 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3816 | return 0; |
3817 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3818 | return 1; |
1da177e4 LT |
3819 | } |
3820 | ||
d3d4152a JL |
3821 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3822 | { | |
3823 | struct nfs_server *server = NFS_SERVER(dir); | |
3824 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3825 | struct nfs_renameres *res = msg->rpc_resp; | |
3826 | ||
3827 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3828 | res->server = server; |
a9c92d6b | 3829 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3830 | } |
3831 | ||
c6bfa1a1 BS |
3832 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3833 | { | |
d9afbd1b TM |
3834 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3835 | &data->args.seq_args, | |
3836 | &data->res.seq_res, | |
3837 | task); | |
d3d4152a JL |
3838 | } |
3839 | ||
3840 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3841 | struct inode *new_dir) | |
3842 | { | |
fbc6f7c2 TM |
3843 | struct nfs_renamedata *data = task->tk_calldata; |
3844 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
3845 | |
3846 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3847 | return 0; | |
8478eaa1 | 3848 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
3849 | return 0; |
3850 | ||
3851 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3852 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3853 | return 1; |
3854 | } | |
3855 | ||
1da177e4 LT |
3856 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
3857 | { | |
91ba2eee | 3858 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3859 | struct nfs4_link_arg arg = { |
3860 | .fh = NFS_FH(inode), | |
3861 | .dir_fh = NFS_FH(dir), | |
3862 | .name = name, | |
91ba2eee TM |
3863 | .bitmask = server->attr_bitmask, |
3864 | }; | |
91ba2eee TM |
3865 | struct nfs4_link_res res = { |
3866 | .server = server, | |
1775fd3e | 3867 | .label = NULL, |
1da177e4 | 3868 | }; |
1da177e4 LT |
3869 | struct rpc_message msg = { |
3870 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3871 | .rpc_argp = &arg, | |
91ba2eee | 3872 | .rpc_resp = &res, |
1da177e4 | 3873 | }; |
136f2627 TM |
3874 | int status = -ENOMEM; |
3875 | ||
3876 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3877 | if (res.fattr == NULL) |
136f2627 | 3878 | goto out; |
1da177e4 | 3879 | |
14c43f76 DQ |
3880 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
3881 | if (IS_ERR(res.label)) { | |
3882 | status = PTR_ERR(res.label); | |
3883 | goto out; | |
3884 | } | |
aa9c2669 | 3885 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 3886 | |
7c513058 | 3887 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3888 | if (!status) { |
3889 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
3890 | status = nfs_post_op_update_inode(inode, res.fattr); |
3891 | if (!status) | |
3892 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 3893 | } |
14c43f76 DQ |
3894 | |
3895 | ||
3896 | nfs4_label_free(res.label); | |
3897 | ||
136f2627 | 3898 | out: |
136f2627 | 3899 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3900 | return status; |
3901 | } | |
3902 | ||
3903 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3904 | { | |
3905 | struct nfs4_exception exception = { }; | |
3906 | int err; | |
3907 | do { | |
3908 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3909 | _nfs4_proc_link(inode, dir, name), | |
3910 | &exception); | |
3911 | } while (exception.retry); | |
3912 | return err; | |
3913 | } | |
3914 | ||
57dc9a57 TM |
3915 | struct nfs4_createdata { |
3916 | struct rpc_message msg; | |
3917 | struct nfs4_create_arg arg; | |
3918 | struct nfs4_create_res res; | |
3919 | struct nfs_fh fh; | |
3920 | struct nfs_fattr fattr; | |
1775fd3e | 3921 | struct nfs4_label *label; |
57dc9a57 TM |
3922 | }; |
3923 | ||
3924 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3925 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3926 | { | |
3927 | struct nfs4_createdata *data; | |
3928 | ||
3929 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3930 | if (data != NULL) { | |
3931 | struct nfs_server *server = NFS_SERVER(dir); | |
3932 | ||
14c43f76 DQ |
3933 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
3934 | if (IS_ERR(data->label)) | |
3935 | goto out_free; | |
3936 | ||
57dc9a57 TM |
3937 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
3938 | data->msg.rpc_argp = &data->arg; | |
3939 | data->msg.rpc_resp = &data->res; | |
3940 | data->arg.dir_fh = NFS_FH(dir); | |
3941 | data->arg.server = server; | |
3942 | data->arg.name = name; | |
3943 | data->arg.attrs = sattr; | |
3944 | data->arg.ftype = ftype; | |
aa9c2669 | 3945 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
3946 | data->res.server = server; |
3947 | data->res.fh = &data->fh; | |
3948 | data->res.fattr = &data->fattr; | |
1775fd3e | 3949 | data->res.label = data->label; |
57dc9a57 | 3950 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3951 | } |
3952 | return data; | |
14c43f76 DQ |
3953 | out_free: |
3954 | kfree(data); | |
3955 | return NULL; | |
57dc9a57 TM |
3956 | } |
3957 | ||
3958 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3959 | { | |
7c513058 | 3960 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3961 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3962 | if (status == 0) { |
3963 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 3964 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
3965 | } |
3966 | return status; | |
3967 | } | |
3968 | ||
3969 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3970 | { | |
14c43f76 | 3971 | nfs4_label_free(data->label); |
57dc9a57 TM |
3972 | kfree(data); |
3973 | } | |
3974 | ||
4f390c15 | 3975 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
3976 | struct page *page, unsigned int len, struct iattr *sattr, |
3977 | struct nfs4_label *label) | |
1da177e4 | 3978 | { |
57dc9a57 TM |
3979 | struct nfs4_createdata *data; |
3980 | int status = -ENAMETOOLONG; | |
1da177e4 | 3981 | |
94a6d753 | 3982 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3983 | goto out; |
4f390c15 | 3984 | |
57dc9a57 TM |
3985 | status = -ENOMEM; |
3986 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3987 | if (data == NULL) | |
3988 | goto out; | |
3989 | ||
3990 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3991 | data->arg.u.symlink.pages = &page; | |
3992 | data->arg.u.symlink.len = len; | |
1775fd3e | 3993 | data->arg.label = label; |
1da177e4 | 3994 | |
57dc9a57 TM |
3995 | status = nfs4_do_create(dir, dentry, data); |
3996 | ||
3997 | nfs4_free_createdata(data); | |
3998 | out: | |
1da177e4 LT |
3999 | return status; |
4000 | } | |
4001 | ||
4f390c15 | 4002 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 4003 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
4004 | { |
4005 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4006 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4007 | int err; |
aa9c2669 DQ |
4008 | |
4009 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
4010 | ||
1da177e4 | 4011 | do { |
078ea3df TM |
4012 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
4013 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
4014 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4015 | &exception); |
4016 | } while (exception.retry); | |
aa9c2669 DQ |
4017 | |
4018 | nfs4_label_release_security(label); | |
1da177e4 LT |
4019 | return err; |
4020 | } | |
4021 | ||
4022 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 4023 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 4024 | { |
57dc9a57 TM |
4025 | struct nfs4_createdata *data; |
4026 | int status = -ENOMEM; | |
1da177e4 | 4027 | |
57dc9a57 TM |
4028 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
4029 | if (data == NULL) | |
4030 | goto out; | |
4031 | ||
1775fd3e | 4032 | data->arg.label = label; |
57dc9a57 TM |
4033 | status = nfs4_do_create(dir, dentry, data); |
4034 | ||
4035 | nfs4_free_createdata(data); | |
4036 | out: | |
1da177e4 LT |
4037 | return status; |
4038 | } | |
4039 | ||
4040 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
4041 | struct iattr *sattr) | |
4042 | { | |
4043 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4044 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4045 | int err; |
a8a5da99 | 4046 | |
aa9c2669 DQ |
4047 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4048 | ||
a8a5da99 | 4049 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4050 | do { |
078ea3df TM |
4051 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
4052 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
4053 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4054 | &exception); |
4055 | } while (exception.retry); | |
aa9c2669 DQ |
4056 | nfs4_label_release_security(label); |
4057 | ||
1da177e4 LT |
4058 | return err; |
4059 | } | |
4060 | ||
4061 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4062 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 4063 | { |
2b0143b5 | 4064 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
4065 | struct nfs4_readdir_arg args = { |
4066 | .fh = NFS_FH(dir), | |
56e4ebf8 | 4067 | .pages = pages, |
1da177e4 LT |
4068 | .pgbase = 0, |
4069 | .count = count, | |
2b0143b5 | 4070 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 4071 | .plus = plus, |
1da177e4 LT |
4072 | }; |
4073 | struct nfs4_readdir_res res; | |
4074 | struct rpc_message msg = { | |
4075 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
4076 | .rpc_argp = &args, | |
4077 | .rpc_resp = &res, | |
4078 | .rpc_cred = cred, | |
4079 | }; | |
4080 | int status; | |
4081 | ||
6de1472f AV |
4082 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
4083 | dentry, | |
eadf4598 | 4084 | (unsigned long long)cookie); |
c3f52af3 | 4085 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 4086 | res.pgbase = args.pgbase; |
7c513058 | 4087 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 4088 | if (status >= 0) { |
c3f52af3 | 4089 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
4090 | status += args.pgbase; |
4091 | } | |
c4812998 TM |
4092 | |
4093 | nfs_invalidate_atime(dir); | |
4094 | ||
3110ff80 | 4095 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
4096 | return status; |
4097 | } | |
4098 | ||
4099 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4100 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
4101 | { |
4102 | struct nfs4_exception exception = { }; | |
4103 | int err; | |
4104 | do { | |
c1578b76 TM |
4105 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
4106 | pages, count, plus); | |
2b0143b5 DH |
4107 | trace_nfs4_readdir(d_inode(dentry), err); |
4108 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
4109 | &exception); |
4110 | } while (exception.retry); | |
4111 | return err; | |
4112 | } | |
4113 | ||
4114 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 4115 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 4116 | { |
57dc9a57 TM |
4117 | struct nfs4_createdata *data; |
4118 | int mode = sattr->ia_mode; | |
4119 | int status = -ENOMEM; | |
1da177e4 | 4120 | |
57dc9a57 TM |
4121 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
4122 | if (data == NULL) | |
4123 | goto out; | |
4124 | ||
1da177e4 | 4125 | if (S_ISFIFO(mode)) |
57dc9a57 | 4126 | data->arg.ftype = NF4FIFO; |
1da177e4 | 4127 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
4128 | data->arg.ftype = NF4BLK; |
4129 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4130 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
4131 | } |
4132 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
4133 | data->arg.ftype = NF4CHR; |
4134 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4135 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
4136 | } else if (!S_ISSOCK(mode)) { |
4137 | status = -EINVAL; | |
4138 | goto out_free; | |
1da177e4 | 4139 | } |
1775fd3e | 4140 | |
aa9c2669 | 4141 | data->arg.label = label; |
57dc9a57 | 4142 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4143 | out_free: |
57dc9a57 TM |
4144 | nfs4_free_createdata(data); |
4145 | out: | |
1da177e4 LT |
4146 | return status; |
4147 | } | |
4148 | ||
4149 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4150 | struct iattr *sattr, dev_t rdev) | |
4151 | { | |
4152 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4153 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4154 | int err; |
a8a5da99 | 4155 | |
aa9c2669 DQ |
4156 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4157 | ||
a8a5da99 | 4158 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4159 | do { |
078ea3df TM |
4160 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4161 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4162 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4163 | &exception); |
4164 | } while (exception.retry); | |
aa9c2669 DQ |
4165 | |
4166 | nfs4_label_release_security(label); | |
4167 | ||
1da177e4 LT |
4168 | return err; |
4169 | } | |
4170 | ||
4171 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4172 | struct nfs_fsstat *fsstat) | |
4173 | { | |
4174 | struct nfs4_statfs_arg args = { | |
4175 | .fh = fhandle, | |
4176 | .bitmask = server->attr_bitmask, | |
4177 | }; | |
24ad148a BH |
4178 | struct nfs4_statfs_res res = { |
4179 | .fsstat = fsstat, | |
4180 | }; | |
1da177e4 LT |
4181 | struct rpc_message msg = { |
4182 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4183 | .rpc_argp = &args, | |
24ad148a | 4184 | .rpc_resp = &res, |
1da177e4 LT |
4185 | }; |
4186 | ||
0e574af1 | 4187 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4188 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4189 | } |
4190 | ||
4191 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4192 | { | |
4193 | struct nfs4_exception exception = { }; | |
4194 | int err; | |
4195 | do { | |
4196 | err = nfs4_handle_exception(server, | |
4197 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4198 | &exception); | |
4199 | } while (exception.retry); | |
4200 | return err; | |
4201 | } | |
4202 | ||
4203 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4204 | struct nfs_fsinfo *fsinfo) | |
4205 | { | |
4206 | struct nfs4_fsinfo_arg args = { | |
4207 | .fh = fhandle, | |
4208 | .bitmask = server->attr_bitmask, | |
4209 | }; | |
3dda5e43 BH |
4210 | struct nfs4_fsinfo_res res = { |
4211 | .fsinfo = fsinfo, | |
4212 | }; | |
1da177e4 LT |
4213 | struct rpc_message msg = { |
4214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4215 | .rpc_argp = &args, | |
3dda5e43 | 4216 | .rpc_resp = &res, |
1da177e4 LT |
4217 | }; |
4218 | ||
7c513058 | 4219 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4220 | } |
4221 | ||
4222 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4223 | { | |
4224 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4225 | unsigned long now = jiffies; |
1da177e4 LT |
4226 | int err; |
4227 | ||
4228 | do { | |
83ca7f5a | 4229 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4230 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a CL |
4231 | if (err == 0) { |
4232 | struct nfs_client *clp = server->nfs_client; | |
4233 | ||
4234 | spin_lock(&clp->cl_lock); | |
4235 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
4236 | clp->cl_last_renewal = now; | |
4237 | spin_unlock(&clp->cl_lock); | |
4238 | break; | |
4239 | } | |
4240 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4241 | } while (exception.retry); |
4242 | return err; | |
4243 | } | |
4244 | ||
4245 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4246 | { | |
e38eb650 BS |
4247 | int error; |
4248 | ||
0e574af1 | 4249 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4250 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4251 | if (error == 0) { |
4252 | /* block layout checks this! */ | |
4253 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 4254 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 4255 | } |
e38eb650 BS |
4256 | |
4257 | return error; | |
1da177e4 LT |
4258 | } |
4259 | ||
4260 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4261 | struct nfs_pathconf *pathconf) | |
4262 | { | |
4263 | struct nfs4_pathconf_arg args = { | |
4264 | .fh = fhandle, | |
4265 | .bitmask = server->attr_bitmask, | |
4266 | }; | |
d45b2989 BH |
4267 | struct nfs4_pathconf_res res = { |
4268 | .pathconf = pathconf, | |
4269 | }; | |
1da177e4 LT |
4270 | struct rpc_message msg = { |
4271 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4272 | .rpc_argp = &args, | |
d45b2989 | 4273 | .rpc_resp = &res, |
1da177e4 LT |
4274 | }; |
4275 | ||
4276 | /* None of the pathconf attributes are mandatory to implement */ | |
4277 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4278 | memset(pathconf, 0, sizeof(*pathconf)); | |
4279 | return 0; | |
4280 | } | |
4281 | ||
0e574af1 | 4282 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4283 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4284 | } |
4285 | ||
4286 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4287 | struct nfs_pathconf *pathconf) | |
4288 | { | |
4289 | struct nfs4_exception exception = { }; | |
4290 | int err; | |
4291 | ||
4292 | do { | |
4293 | err = nfs4_handle_exception(server, | |
4294 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4295 | &exception); | |
4296 | } while (exception.retry); | |
4297 | return err; | |
4298 | } | |
4299 | ||
5521abfd | 4300 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4301 | const struct nfs_open_context *ctx, |
4302 | const struct nfs_lock_context *l_ctx, | |
4303 | fmode_t fmode) | |
4304 | { | |
4305 | const struct nfs_lockowner *lockowner = NULL; | |
4306 | ||
4307 | if (l_ctx != NULL) | |
4308 | lockowner = &l_ctx->lockowner; | |
abf4e13c | 4309 | return nfs4_select_rw_stateid(ctx->state, fmode, lockowner, stateid, NULL); |
9b206149 TM |
4310 | } |
4311 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4312 | ||
5521abfd TM |
4313 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4314 | const struct nfs_open_context *ctx, | |
4315 | const struct nfs_lock_context *l_ctx, | |
4316 | fmode_t fmode) | |
4317 | { | |
4318 | nfs4_stateid current_stateid; | |
4319 | ||
e1253be0 TM |
4320 | /* If the current stateid represents a lost lock, then exit */ |
4321 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4322 | return true; | |
5521abfd TM |
4323 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4324 | } | |
4325 | ||
4326 | static bool nfs4_error_stateid_expired(int err) | |
4327 | { | |
4328 | switch (err) { | |
4329 | case -NFS4ERR_DELEG_REVOKED: | |
4330 | case -NFS4ERR_ADMIN_REVOKED: | |
4331 | case -NFS4ERR_BAD_STATEID: | |
4332 | case -NFS4ERR_STALE_STATEID: | |
4333 | case -NFS4ERR_OLD_STATEID: | |
4334 | case -NFS4ERR_OPENMODE: | |
4335 | case -NFS4ERR_EXPIRED: | |
4336 | return true; | |
4337 | } | |
4338 | return false; | |
4339 | } | |
4340 | ||
d45f60c6 | 4341 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4342 | { |
d45f60c6 | 4343 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4344 | } |
4345 | ||
d45f60c6 | 4346 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4347 | { |
d45f60c6 | 4348 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4349 | |
d45f60c6 WAA |
4350 | trace_nfs4_read(hdr, task->tk_status); |
4351 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4352 | hdr->args.context->state, |
4353 | NULL) == -EAGAIN) { | |
d00c5d43 | 4354 | rpc_restart_call_prepare(task); |
ec06c096 | 4355 | return -EAGAIN; |
1da177e4 | 4356 | } |
8850df99 | 4357 | |
d45f60c6 | 4358 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4359 | if (task->tk_status > 0) |
d45f60c6 | 4360 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4361 | return 0; |
1da177e4 LT |
4362 | } |
4363 | ||
5521abfd | 4364 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4365 | struct nfs_pgio_args *args) |
5521abfd TM |
4366 | { |
4367 | ||
4368 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4369 | nfs4_stateid_is_current(&args->stateid, | |
4370 | args->context, | |
4371 | args->lock_context, | |
4372 | FMODE_READ)) | |
4373 | return false; | |
4374 | rpc_restart_call_prepare(task); | |
4375 | return true; | |
4376 | } | |
4377 | ||
d45f60c6 | 4378 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4379 | { |
4380 | ||
4381 | dprintk("--> %s\n", __func__); | |
4382 | ||
d45f60c6 | 4383 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4384 | return -EAGAIN; |
d45f60c6 | 4385 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4386 | return -EAGAIN; |
d45f60c6 WAA |
4387 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4388 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4389 | } |
4390 | ||
d45f60c6 WAA |
4391 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4392 | struct rpc_message *msg) | |
1da177e4 | 4393 | { |
d45f60c6 WAA |
4394 | hdr->timestamp = jiffies; |
4395 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4396 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4397 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4398 | } |
4399 | ||
d45f60c6 WAA |
4400 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4401 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4402 | { |
d45f60c6 WAA |
4403 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4404 | &hdr->args.seq_args, | |
4405 | &hdr->res.seq_res, | |
9b206149 | 4406 | task)) |
ef1820f9 | 4407 | return 0; |
d45f60c6 WAA |
4408 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4409 | hdr->args.lock_context, | |
4410 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4411 | return -EIO; |
d45f60c6 | 4412 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4413 | return -EIO; |
4414 | return 0; | |
1da177e4 LT |
4415 | } |
4416 | ||
d45f60c6 WAA |
4417 | static int nfs4_write_done_cb(struct rpc_task *task, |
4418 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4419 | { |
d45f60c6 | 4420 | struct inode *inode = hdr->inode; |
8478eaa1 | 4421 | |
d45f60c6 WAA |
4422 | trace_nfs4_write(hdr, task->tk_status); |
4423 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4424 | hdr->args.context->state, |
4425 | NULL) == -EAGAIN) { | |
d00c5d43 | 4426 | rpc_restart_call_prepare(task); |
788e7a89 | 4427 | return -EAGAIN; |
1da177e4 | 4428 | } |
4f9838c7 | 4429 | if (task->tk_status >= 0) { |
d45f60c6 | 4430 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4431 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4432 | } |
788e7a89 | 4433 | return 0; |
1da177e4 LT |
4434 | } |
4435 | ||
5521abfd | 4436 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4437 | struct nfs_pgio_args *args) |
5521abfd TM |
4438 | { |
4439 | ||
4440 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4441 | nfs4_stateid_is_current(&args->stateid, | |
4442 | args->context, | |
4443 | args->lock_context, | |
4444 | FMODE_WRITE)) | |
4445 | return false; | |
4446 | rpc_restart_call_prepare(task); | |
4447 | return true; | |
4448 | } | |
4449 | ||
d45f60c6 | 4450 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4451 | { |
d45f60c6 | 4452 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4453 | return -EAGAIN; |
d45f60c6 | 4454 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4455 | return -EAGAIN; |
d45f60c6 WAA |
4456 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4457 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4458 | } |
4459 | ||
5a37f851 | 4460 | static |
d45f60c6 | 4461 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4462 | { |
5a37f851 | 4463 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4464 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4465 | return false; |
4466 | /* Otherwise, request attributes if and only if we don't hold | |
4467 | * a delegation | |
4468 | */ | |
011e2a7f | 4469 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4470 | } |
a69aef14 | 4471 | |
d45f60c6 WAA |
4472 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4473 | struct rpc_message *msg) | |
1da177e4 | 4474 | { |
d45f60c6 | 4475 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4476 | |
d45f60c6 WAA |
4477 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4478 | hdr->args.bitmask = NULL; | |
4479 | hdr->res.fattr = NULL; | |
7ffd1064 | 4480 | } else |
d45f60c6 | 4481 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4482 | |
d45f60c6 WAA |
4483 | if (!hdr->pgio_done_cb) |
4484 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4485 | hdr->res.server = server; | |
4486 | hdr->timestamp = jiffies; | |
1da177e4 | 4487 | |
bdc7f021 | 4488 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4489 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4490 | } |
4491 | ||
0b7c0153 | 4492 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4493 | { |
d9afbd1b TM |
4494 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4495 | &data->args.seq_args, | |
4496 | &data->res.seq_res, | |
4497 | task); | |
1da177e4 LT |
4498 | } |
4499 | ||
0b7c0153 | 4500 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4501 | { |
1da177e4 | 4502 | struct inode *inode = data->inode; |
14516c3a | 4503 | |
cc668ab3 | 4504 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4505 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4506 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4507 | rpc_restart_call_prepare(task); |
788e7a89 | 4508 | return -EAGAIN; |
1da177e4 | 4509 | } |
788e7a89 | 4510 | return 0; |
1da177e4 LT |
4511 | } |
4512 | ||
0b7c0153 | 4513 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4514 | { |
4515 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4516 | return -EAGAIN; | |
0b7c0153 | 4517 | return data->commit_done_cb(task, data); |
5f452431 FI |
4518 | } |
4519 | ||
0b7c0153 | 4520 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4521 | { |
788e7a89 | 4522 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4523 | |
0b7c0153 FI |
4524 | if (data->commit_done_cb == NULL) |
4525 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4526 | data->res.server = server; |
bdc7f021 | 4527 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4528 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4529 | } |
4530 | ||
9bc4e3ca CL |
4531 | struct nfs4_renewdata { |
4532 | struct nfs_client *client; | |
4533 | unsigned long timestamp; | |
4534 | }; | |
4535 | ||
1da177e4 LT |
4536 | /* |
4537 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4538 | * standalone procedure for queueing an asynchronous RENEW. | |
4539 | */ | |
9bc4e3ca | 4540 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4541 | { |
9bc4e3ca CL |
4542 | struct nfs4_renewdata *data = calldata; |
4543 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4544 | |
0851de06 AB |
4545 | if (atomic_read(&clp->cl_count) > 1) |
4546 | nfs4_schedule_state_renewal(clp); | |
4547 | nfs_put_client(clp); | |
9bc4e3ca | 4548 | kfree(data); |
dc96aef9 AB |
4549 | } |
4550 | ||
9bc4e3ca | 4551 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4552 | { |
9bc4e3ca CL |
4553 | struct nfs4_renewdata *data = calldata; |
4554 | struct nfs_client *clp = data->client; | |
4555 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4556 | |
c6d01c6f | 4557 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4558 | switch (task->tk_status) { |
4559 | case 0: | |
4560 | break; | |
4561 | case -NFS4ERR_LEASE_MOVED: | |
4562 | nfs4_schedule_lease_moved_recovery(clp); | |
4563 | break; | |
4564 | default: | |
95baa25c | 4565 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4566 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4567 | return; | |
4568 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4569 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4570 | return; |
4571 | } | |
4572 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4573 | } |
452e9352 | 4574 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4575 | } |
4576 | ||
963d8fe5 TM |
4577 | static const struct rpc_call_ops nfs4_renew_ops = { |
4578 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4579 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4580 | }; |
4581 | ||
2f60ea6b | 4582 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4583 | { |
4584 | struct rpc_message msg = { | |
4585 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4586 | .rpc_argp = clp, | |
b4454fe1 | 4587 | .rpc_cred = cred, |
1da177e4 | 4588 | }; |
9bc4e3ca | 4589 | struct nfs4_renewdata *data; |
1da177e4 | 4590 | |
2f60ea6b TM |
4591 | if (renew_flags == 0) |
4592 | return 0; | |
0851de06 AB |
4593 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4594 | return -EIO; | |
b569ad34 | 4595 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4596 | if (data == NULL) |
4597 | return -ENOMEM; | |
4598 | data->client = clp; | |
4599 | data->timestamp = jiffies; | |
bc7a05ca | 4600 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4601 | &nfs4_renew_ops, data); |
1da177e4 LT |
4602 | } |
4603 | ||
8534d4ec | 4604 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4605 | { |
4606 | struct rpc_message msg = { | |
4607 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4608 | .rpc_argp = clp, | |
b4454fe1 | 4609 | .rpc_cred = cred, |
1da177e4 LT |
4610 | }; |
4611 | unsigned long now = jiffies; | |
4612 | int status; | |
4613 | ||
bc7a05ca | 4614 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4615 | if (status < 0) |
4616 | return status; | |
452e9352 | 4617 | do_renew_lease(clp, now); |
1da177e4 LT |
4618 | return 0; |
4619 | } | |
4620 | ||
aa1870af BF |
4621 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4622 | { | |
7dd7d959 | 4623 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4624 | } |
4625 | ||
21f498c2 TM |
4626 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4627 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4628 | * the stack. |
4629 | */ | |
21f498c2 | 4630 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4631 | |
e9e3d724 | 4632 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 4633 | struct page **pages) |
e9e3d724 NH |
4634 | { |
4635 | struct page *newpage, **spages; | |
4636 | int rc = 0; | |
4637 | size_t len; | |
4638 | spages = pages; | |
4639 | ||
4640 | do { | |
21f498c2 | 4641 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4642 | newpage = alloc_page(GFP_KERNEL); |
4643 | ||
4644 | if (newpage == NULL) | |
4645 | goto unwind; | |
4646 | memcpy(page_address(newpage), buf, len); | |
4647 | buf += len; | |
4648 | buflen -= len; | |
4649 | *pages++ = newpage; | |
4650 | rc++; | |
4651 | } while (buflen != 0); | |
4652 | ||
4653 | return rc; | |
4654 | ||
4655 | unwind: | |
4656 | for(; rc > 0; rc--) | |
4657 | __free_page(spages[rc-1]); | |
4658 | return -ENOMEM; | |
4659 | } | |
4660 | ||
e50a1c2e BF |
4661 | struct nfs4_cached_acl { |
4662 | int cached; | |
4663 | size_t len; | |
3e9d4154 | 4664 | char data[0]; |
e50a1c2e BF |
4665 | }; |
4666 | ||
4667 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4668 | { | |
4669 | struct nfs_inode *nfsi = NFS_I(inode); | |
4670 | ||
4671 | spin_lock(&inode->i_lock); | |
4672 | kfree(nfsi->nfs4_acl); | |
4673 | nfsi->nfs4_acl = acl; | |
4674 | spin_unlock(&inode->i_lock); | |
4675 | } | |
4676 | ||
4677 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4678 | { | |
4679 | nfs4_set_cached_acl(inode, NULL); | |
4680 | } | |
4681 | ||
4682 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4683 | { | |
4684 | struct nfs_inode *nfsi = NFS_I(inode); | |
4685 | struct nfs4_cached_acl *acl; | |
4686 | int ret = -ENOENT; | |
4687 | ||
4688 | spin_lock(&inode->i_lock); | |
4689 | acl = nfsi->nfs4_acl; | |
4690 | if (acl == NULL) | |
4691 | goto out; | |
4692 | if (buf == NULL) /* user is just asking for length */ | |
4693 | goto out_len; | |
4694 | if (acl->cached == 0) | |
4695 | goto out; | |
4696 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4697 | if (acl->len > buflen) | |
4698 | goto out; | |
4699 | memcpy(buf, acl->data, acl->len); | |
4700 | out_len: | |
4701 | ret = acl->len; | |
4702 | out: | |
4703 | spin_unlock(&inode->i_lock); | |
4704 | return ret; | |
4705 | } | |
4706 | ||
5794d21e | 4707 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4708 | { |
4709 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4710 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4711 | |
1f1ea6c2 | 4712 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4713 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4714 | if (acl == NULL) |
4715 | goto out; | |
4716 | acl->cached = 1; | |
5794d21e | 4717 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4718 | } else { |
4719 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4720 | if (acl == NULL) | |
4721 | goto out; | |
4722 | acl->cached = 0; | |
4723 | } | |
4724 | acl->len = acl_len; | |
4725 | out: | |
4726 | nfs4_set_cached_acl(inode, acl); | |
4727 | } | |
4728 | ||
bf118a34 AA |
4729 | /* |
4730 | * The getxattr API returns the required buffer length when called with a | |
4731 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4732 | * the required buf. On a NULL buf, we send a page of data to the server | |
4733 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4734 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4735 | * the cache. If not so, we throw away the page, and cache the required | |
4736 | * length. The next getxattr call will then produce another round trip to | |
4737 | * the server, this time with the input buf of the required size. | |
4738 | */ | |
16b4289c | 4739 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4740 | { |
bf118a34 | 4741 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4742 | struct nfs_getaclargs args = { |
4743 | .fh = NFS_FH(inode), | |
4744 | .acl_pages = pages, | |
4745 | .acl_len = buflen, | |
4746 | }; | |
663c79b3 BH |
4747 | struct nfs_getaclres res = { |
4748 | .acl_len = buflen, | |
4749 | }; | |
aa1870af BF |
4750 | struct rpc_message msg = { |
4751 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4752 | .rpc_argp = &args, | |
663c79b3 | 4753 | .rpc_resp = &res, |
aa1870af | 4754 | }; |
21f498c2 TM |
4755 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4756 | int ret = -ENOMEM, i; | |
aa1870af | 4757 | |
bf118a34 AA |
4758 | /* As long as we're doing a round trip to the server anyway, |
4759 | * let's be prepared for a page of acl data. */ | |
4760 | if (npages == 0) | |
4761 | npages = 1; | |
21f498c2 TM |
4762 | if (npages > ARRAY_SIZE(pages)) |
4763 | return -ERANGE; | |
5a006899 | 4764 | |
bf118a34 AA |
4765 | for (i = 0; i < npages; i++) { |
4766 | pages[i] = alloc_page(GFP_KERNEL); | |
4767 | if (!pages[i]) | |
4768 | goto out_free; | |
e50a1c2e | 4769 | } |
5a006899 SP |
4770 | |
4771 | /* for decoding across pages */ | |
4772 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4773 | if (!res.acl_scratch) | |
4774 | goto out_free; | |
4775 | ||
bf118a34 | 4776 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 4777 | |
de040bec | 4778 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4779 | __func__, buf, buflen, npages, args.acl_len); |
4780 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4781 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4782 | if (ret) |
4783 | goto out_free; | |
bf118a34 | 4784 | |
1f1ea6c2 TM |
4785 | /* Handle the case where the passed-in buffer is too short */ |
4786 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4787 | /* Did the user only issue a request for the acl length? */ | |
4788 | if (buf == NULL) | |
4789 | goto out_ok; | |
e50a1c2e | 4790 | ret = -ERANGE; |
1f1ea6c2 | 4791 | goto out_free; |
e50a1c2e | 4792 | } |
1f1ea6c2 | 4793 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4794 | if (buf) { |
4795 | if (res.acl_len > buflen) { | |
4796 | ret = -ERANGE; | |
4797 | goto out_free; | |
4798 | } | |
1f1ea6c2 | 4799 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4800 | } |
1f1ea6c2 TM |
4801 | out_ok: |
4802 | ret = res.acl_len; | |
e50a1c2e | 4803 | out_free: |
bf118a34 AA |
4804 | for (i = 0; i < npages; i++) |
4805 | if (pages[i]) | |
4806 | __free_page(pages[i]); | |
331818f1 TM |
4807 | if (res.acl_scratch) |
4808 | __free_page(res.acl_scratch); | |
aa1870af BF |
4809 | return ret; |
4810 | } | |
4811 | ||
16b4289c TM |
4812 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4813 | { | |
4814 | struct nfs4_exception exception = { }; | |
4815 | ssize_t ret; | |
4816 | do { | |
4817 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4818 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4819 | if (ret >= 0) |
4820 | break; | |
4821 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4822 | } while (exception.retry); | |
4823 | return ret; | |
4824 | } | |
4825 | ||
e50a1c2e BF |
4826 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4827 | { | |
4828 | struct nfs_server *server = NFS_SERVER(inode); | |
4829 | int ret; | |
4830 | ||
4831 | if (!nfs4_server_supports_acls(server)) | |
4832 | return -EOPNOTSUPP; | |
4833 | ret = nfs_revalidate_inode(server, inode); | |
4834 | if (ret < 0) | |
4835 | return ret; | |
08a22b39 AK |
4836 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4837 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4838 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4839 | if (ret != -ENOENT) | |
bf118a34 AA |
4840 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4841 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4842 | return ret; |
4843 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4844 | } | |
4845 | ||
16b4289c | 4846 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4847 | { |
4848 | struct nfs_server *server = NFS_SERVER(inode); | |
4849 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4850 | struct nfs_setaclargs arg = { | |
4851 | .fh = NFS_FH(inode), | |
4852 | .acl_pages = pages, | |
4853 | .acl_len = buflen, | |
4854 | }; | |
73c403a9 | 4855 | struct nfs_setaclres res; |
4b580ee3 BF |
4856 | struct rpc_message msg = { |
4857 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4858 | .rpc_argp = &arg, | |
73c403a9 | 4859 | .rpc_resp = &res, |
4b580ee3 | 4860 | }; |
21f498c2 | 4861 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4862 | int ret, i; |
4b580ee3 BF |
4863 | |
4864 | if (!nfs4_server_supports_acls(server)) | |
4865 | return -EOPNOTSUPP; | |
21f498c2 TM |
4866 | if (npages > ARRAY_SIZE(pages)) |
4867 | return -ERANGE; | |
8fbcf237 | 4868 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
4869 | if (i < 0) |
4870 | return i; | |
57ec14c5 | 4871 | nfs4_inode_return_delegation(inode); |
7c513058 | 4872 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4873 | |
4874 | /* | |
4875 | * Free each page after tx, so the only ref left is | |
4876 | * held by the network stack | |
4877 | */ | |
4878 | for (; i > 0; i--) | |
4879 | put_page(pages[i-1]); | |
4880 | ||
08a22b39 AK |
4881 | /* |
4882 | * Acl update can result in inode attribute update. | |
4883 | * so mark the attribute cache invalid. | |
4884 | */ | |
4885 | spin_lock(&inode->i_lock); | |
4886 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4887 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4888 | nfs_access_zap_cache(inode); |
4889 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4890 | return ret; |
4891 | } | |
4892 | ||
16b4289c TM |
4893 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4894 | { | |
4895 | struct nfs4_exception exception = { }; | |
4896 | int err; | |
4897 | do { | |
c1578b76 TM |
4898 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
4899 | trace_nfs4_set_acl(inode, err); | |
4900 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
4901 | &exception); |
4902 | } while (exception.retry); | |
4903 | return err; | |
4904 | } | |
4905 | ||
aa9c2669 DQ |
4906 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
4907 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
4908 | size_t buflen) | |
4909 | { | |
4910 | struct nfs_server *server = NFS_SERVER(inode); | |
4911 | struct nfs_fattr fattr; | |
4912 | struct nfs4_label label = {0, 0, buflen, buf}; | |
4913 | ||
4914 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 4915 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
4916 | .fh = NFS_FH(inode), |
4917 | .bitmask = bitmask, | |
4918 | }; | |
4919 | struct nfs4_getattr_res res = { | |
4920 | .fattr = &fattr, | |
4921 | .label = &label, | |
4922 | .server = server, | |
4923 | }; | |
4924 | struct rpc_message msg = { | |
4925 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 4926 | .rpc_argp = &arg, |
aa9c2669 DQ |
4927 | .rpc_resp = &res, |
4928 | }; | |
4929 | int ret; | |
4930 | ||
4931 | nfs_fattr_init(&fattr); | |
4932 | ||
fcb63a9b | 4933 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
4934 | if (ret) |
4935 | return ret; | |
4936 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
4937 | return -ENOENT; | |
4938 | if (buflen < label.len) | |
4939 | return -ERANGE; | |
4940 | return 0; | |
4941 | } | |
4942 | ||
4943 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
4944 | size_t buflen) | |
4945 | { | |
4946 | struct nfs4_exception exception = { }; | |
4947 | int err; | |
4948 | ||
4949 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
4950 | return -EOPNOTSUPP; | |
4951 | ||
4952 | do { | |
c1578b76 TM |
4953 | err = _nfs4_get_security_label(inode, buf, buflen); |
4954 | trace_nfs4_get_security_label(inode, err); | |
4955 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
4956 | &exception); |
4957 | } while (exception.retry); | |
4958 | return err; | |
4959 | } | |
4960 | ||
4961 | static int _nfs4_do_set_security_label(struct inode *inode, | |
4962 | struct nfs4_label *ilabel, | |
4963 | struct nfs_fattr *fattr, | |
4964 | struct nfs4_label *olabel) | |
4965 | { | |
4966 | ||
4967 | struct iattr sattr = {0}; | |
4968 | struct nfs_server *server = NFS_SERVER(inode); | |
4969 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 4970 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
4971 | .fh = NFS_FH(inode), |
4972 | .iap = &sattr, | |
4973 | .server = server, | |
4974 | .bitmask = bitmask, | |
4975 | .label = ilabel, | |
4976 | }; | |
4977 | struct nfs_setattrres res = { | |
4978 | .fattr = fattr, | |
4979 | .label = olabel, | |
4980 | .server = server, | |
4981 | }; | |
4982 | struct rpc_message msg = { | |
4983 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 4984 | .rpc_argp = &arg, |
aa9c2669 DQ |
4985 | .rpc_resp = &res, |
4986 | }; | |
4987 | int status; | |
4988 | ||
12207f69 | 4989 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 4990 | |
12207f69 | 4991 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
4992 | if (status) |
4993 | dprintk("%s failed: %d\n", __func__, status); | |
4994 | ||
4995 | return status; | |
4996 | } | |
4997 | ||
4998 | static int nfs4_do_set_security_label(struct inode *inode, | |
4999 | struct nfs4_label *ilabel, | |
5000 | struct nfs_fattr *fattr, | |
5001 | struct nfs4_label *olabel) | |
5002 | { | |
5003 | struct nfs4_exception exception = { }; | |
5004 | int err; | |
5005 | ||
5006 | do { | |
c1578b76 TM |
5007 | err = _nfs4_do_set_security_label(inode, ilabel, |
5008 | fattr, olabel); | |
5009 | trace_nfs4_set_security_label(inode, err); | |
5010 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
5011 | &exception); |
5012 | } while (exception.retry); | |
5013 | return err; | |
5014 | } | |
5015 | ||
5016 | static int | |
59301226 | 5017 | nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen) |
aa9c2669 DQ |
5018 | { |
5019 | struct nfs4_label ilabel, *olabel = NULL; | |
5020 | struct nfs_fattr fattr; | |
5021 | struct rpc_cred *cred; | |
aa9c2669 DQ |
5022 | int status; |
5023 | ||
5024 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
5025 | return -EOPNOTSUPP; | |
5026 | ||
5027 | nfs_fattr_init(&fattr); | |
5028 | ||
5029 | ilabel.pi = 0; | |
5030 | ilabel.lfs = 0; | |
5031 | ilabel.label = (char *)buf; | |
5032 | ilabel.len = buflen; | |
5033 | ||
5034 | cred = rpc_lookup_cred(); | |
5035 | if (IS_ERR(cred)) | |
5036 | return PTR_ERR(cred); | |
5037 | ||
5038 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
5039 | if (IS_ERR(olabel)) { | |
5040 | status = -PTR_ERR(olabel); | |
5041 | goto out; | |
5042 | } | |
5043 | ||
5044 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
5045 | if (status == 0) | |
5046 | nfs_setsecurity(inode, &fattr, olabel); | |
5047 | ||
5048 | nfs4_label_free(olabel); | |
5049 | out: | |
5050 | put_rpccred(cred); | |
5051 | return status; | |
5052 | } | |
5053 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
5054 | ||
5055 | ||
f092075d CL |
5056 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
5057 | nfs4_verifier *bootverf) | |
cd93710e CL |
5058 | { |
5059 | __be32 verf[2]; | |
5060 | ||
2c820d9a CL |
5061 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
5062 | /* An impossible timestamp guarantees this value | |
5063 | * will never match a generated boot time. */ | |
5064 | verf[0] = 0; | |
17f26b12 | 5065 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5066 | } else { |
f092075d | 5067 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5068 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5069 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5070 | } |
cd93710e CL |
5071 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5072 | } | |
5073 | ||
a3192688 JL |
5074 | static int |
5075 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5076 | { |
a3192688 JL |
5077 | size_t len; |
5078 | char *str; | |
e984a55a | 5079 | |
ceb3a16c | 5080 | if (clp->cl_owner_id != NULL) |
a3192688 | 5081 | return 0; |
4a3e5779 | 5082 | |
a3192688 | 5083 | rcu_read_lock(); |
4a70316c | 5084 | len = 14 + strlen(clp->cl_ipaddr) + 1 + |
a3192688 JL |
5085 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
5086 | 1 + | |
5087 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5088 | 1; | |
5089 | rcu_read_unlock(); | |
5090 | ||
5091 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5092 | return -EINVAL; | |
5093 | ||
5094 | /* | |
5095 | * Since this string is allocated at mount time, and held until the | |
5096 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5097 | * about a memory-reclaim deadlock. | |
5098 | */ | |
5099 | str = kmalloc(len, GFP_KERNEL); | |
5100 | if (!str) | |
5101 | return -ENOMEM; | |
ceb3a16c | 5102 | |
e984a55a | 5103 | rcu_read_lock(); |
f2dd436e | 5104 | scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
a3192688 JL |
5105 | clp->cl_ipaddr, |
5106 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5107 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5108 | rcu_read_unlock(); |
a3192688 | 5109 | |
a3192688 JL |
5110 | clp->cl_owner_id = str; |
5111 | return 0; | |
e984a55a CL |
5112 | } |
5113 | ||
873e3851 JL |
5114 | static int |
5115 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5116 | { | |
873e3851 JL |
5117 | size_t len; |
5118 | char *str; | |
5119 | ||
5120 | len = 10 + 10 + 1 + 10 + 1 + | |
5121 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5122 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5123 | ||
5124 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5125 | return -EINVAL; | |
5126 | ||
5127 | /* | |
5128 | * Since this string is allocated at mount time, and held until the | |
5129 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5130 | * about a memory-reclaim deadlock. | |
5131 | */ | |
5132 | str = kmalloc(len, GFP_KERNEL); | |
5133 | if (!str) | |
5134 | return -ENOMEM; | |
5135 | ||
f2dd436e | 5136 | scnprintf(str, len, "Linux NFSv%u.%u %s/%s", |
873e3851 JL |
5137 | clp->rpc_ops->version, clp->cl_minorversion, |
5138 | nfs4_client_id_uniquifier, | |
5139 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5140 | clp->cl_owner_id = str; |
5141 | return 0; | |
5142 | } | |
5143 | ||
5144 | static int | |
5145 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5146 | { |
873e3851 JL |
5147 | size_t len; |
5148 | char *str; | |
ceb3a16c TM |
5149 | |
5150 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5151 | return 0; |
6f2ea7f2 CL |
5152 | |
5153 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5154 | return nfs4_init_uniquifier_client_string(clp); |
5155 | ||
5156 | len = 10 + 10 + 1 + 10 + 1 + | |
5157 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5158 | ||
5159 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5160 | return -EINVAL; | |
5161 | ||
5162 | /* | |
5163 | * Since this string is allocated at mount time, and held until the | |
5164 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5165 | * about a memory-reclaim deadlock. | |
5166 | */ | |
5167 | str = kmalloc(len, GFP_KERNEL); | |
5168 | if (!str) | |
5169 | return -ENOMEM; | |
5170 | ||
f2dd436e | 5171 | scnprintf(str, len, "Linux NFSv%u.%u %s", |
873e3851 JL |
5172 | clp->rpc_ops->version, clp->cl_minorversion, |
5173 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5174 | clp->cl_owner_id = str; |
5175 | return 0; | |
e984a55a CL |
5176 | } |
5177 | ||
706cb8db CL |
5178 | /* |
5179 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5180 | * services. Advertise one based on the address family of the | |
5181 | * clientaddr. | |
5182 | */ | |
5183 | static unsigned int | |
5184 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5185 | { | |
5186 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5187 | return scnprintf(buf, len, "tcp6"); | |
5188 | else | |
5189 | return scnprintf(buf, len, "tcp"); | |
5190 | } | |
5191 | ||
f11b2a1c JL |
5192 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5193 | { | |
5194 | struct nfs4_setclientid *sc = calldata; | |
5195 | ||
5196 | if (task->tk_status == 0) | |
5197 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5198 | } | |
5199 | ||
5200 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5201 | .rpc_call_done = nfs4_setclientid_done, | |
5202 | }; | |
5203 | ||
6bbb4ae8 CL |
5204 | /** |
5205 | * nfs4_proc_setclientid - Negotiate client ID | |
5206 | * @clp: state data structure | |
5207 | * @program: RPC program for NFSv4 callback service | |
5208 | * @port: IP port number for NFS4 callback service | |
5209 | * @cred: RPC credential to use for this call | |
5210 | * @res: where to place the result | |
5211 | * | |
5212 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5213 | */ | |
bb8b27e5 TM |
5214 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5215 | unsigned short port, struct rpc_cred *cred, | |
5216 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5217 | { |
5218 | nfs4_verifier sc_verifier; | |
5219 | struct nfs4_setclientid setclientid = { | |
5220 | .sc_verifier = &sc_verifier, | |
5221 | .sc_prog = program, | |
3a6bb738 | 5222 | .sc_clnt = clp, |
1da177e4 LT |
5223 | }; |
5224 | struct rpc_message msg = { | |
5225 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5226 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5227 | .rpc_resp = res, |
286d7d6a | 5228 | .rpc_cred = cred, |
1da177e4 | 5229 | }; |
f11b2a1c JL |
5230 | struct rpc_task *task; |
5231 | struct rpc_task_setup task_setup_data = { | |
5232 | .rpc_client = clp->cl_rpcclient, | |
5233 | .rpc_message = &msg, | |
5234 | .callback_ops = &nfs4_setclientid_ops, | |
5235 | .callback_data = &setclientid, | |
5236 | .flags = RPC_TASK_TIMEOUT, | |
5237 | }; | |
6bbb4ae8 | 5238 | int status; |
1da177e4 | 5239 | |
de734831 | 5240 | /* nfs_client_id4 */ |
f092075d | 5241 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5242 | |
5243 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5244 | status = nfs4_init_uniform_client_string(clp); | |
5245 | else | |
a3192688 | 5246 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5247 | |
5248 | if (status) | |
5249 | goto out; | |
3a6bb738 | 5250 | |
de734831 | 5251 | /* cb_client4 */ |
706cb8db CL |
5252 | setclientid.sc_netid_len = |
5253 | nfs4_init_callback_netid(clp, | |
5254 | setclientid.sc_netid, | |
5255 | sizeof(setclientid.sc_netid)); | |
de734831 | 5256 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5257 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5258 | clp->cl_ipaddr, port >> 8, port & 255); |
5259 | ||
3a6bb738 | 5260 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5261 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5262 | clp->cl_owner_id); |
f11b2a1c JL |
5263 | task = rpc_run_task(&task_setup_data); |
5264 | if (IS_ERR(task)) { | |
5265 | status = PTR_ERR(task); | |
5266 | goto out; | |
5267 | } | |
5268 | status = task->tk_status; | |
5269 | if (setclientid.sc_cred) { | |
5270 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5271 | put_rpccred(setclientid.sc_cred); | |
5272 | } | |
5273 | rpc_put_task(task); | |
5274 | out: | |
c6d01c6f | 5275 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5276 | dprintk("NFS reply setclientid: %d\n", status); |
5277 | return status; | |
1da177e4 LT |
5278 | } |
5279 | ||
6bbb4ae8 CL |
5280 | /** |
5281 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5282 | * @clp: state data structure | |
5283 | * @res: result of a previous SETCLIENTID | |
5284 | * @cred: RPC credential to use for this call | |
5285 | * | |
5286 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5287 | */ | |
fd954ae1 | 5288 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5289 | struct nfs4_setclientid_res *arg, |
5290 | struct rpc_cred *cred) | |
1da177e4 | 5291 | { |
1da177e4 LT |
5292 | struct rpc_message msg = { |
5293 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5294 | .rpc_argp = arg, |
286d7d6a | 5295 | .rpc_cred = cred, |
1da177e4 | 5296 | }; |
1da177e4 LT |
5297 | int status; |
5298 | ||
6bbb4ae8 CL |
5299 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5300 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5301 | clp->cl_clientid); | |
1bd714f2 | 5302 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5303 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5304 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5305 | return status; |
5306 | } | |
5307 | ||
fe650407 TM |
5308 | struct nfs4_delegreturndata { |
5309 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5310 | struct nfs4_delegreturnres res; |
fe650407 TM |
5311 | struct nfs_fh fh; |
5312 | nfs4_stateid stateid; | |
26e976a8 | 5313 | unsigned long timestamp; |
fa178f29 | 5314 | struct nfs_fattr fattr; |
fe650407 | 5315 | int rpc_status; |
039b756a PT |
5316 | struct inode *inode; |
5317 | bool roc; | |
5318 | u32 roc_barrier; | |
fe650407 TM |
5319 | }; |
5320 | ||
fe650407 TM |
5321 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5322 | { | |
5323 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5324 | |
14516c3a TM |
5325 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5326 | return; | |
938e1010 | 5327 | |
ca8acf8d | 5328 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5329 | switch (task->tk_status) { |
79708861 | 5330 | case 0: |
fa178f29 | 5331 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5332 | case -NFS4ERR_ADMIN_REVOKED: |
5333 | case -NFS4ERR_DELEG_REVOKED: | |
5334 | case -NFS4ERR_BAD_STATEID: | |
5335 | case -NFS4ERR_OLD_STATEID: | |
5336 | case -NFS4ERR_STALE_STATEID: | |
5337 | case -NFS4ERR_EXPIRED: | |
5338 | task->tk_status = 0; | |
039b756a PT |
5339 | if (data->roc) |
5340 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5341 | break; |
79708861 | 5342 | default: |
8478eaa1 N |
5343 | if (nfs4_async_handle_error(task, data->res.server, |
5344 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5345 | rpc_restart_call_prepare(task); |
79708861 RL |
5346 | return; |
5347 | } | |
5348 | } | |
5349 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5350 | } |
5351 | ||
5352 | static void nfs4_delegreturn_release(void *calldata) | |
5353 | { | |
039b756a | 5354 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5355 | struct inode *inode = data->inode; |
039b756a | 5356 | |
ea7c38fe TM |
5357 | if (inode) { |
5358 | if (data->roc) | |
5359 | pnfs_roc_release(inode); | |
5360 | nfs_iput_and_deactive(inode); | |
5361 | } | |
fe650407 TM |
5362 | kfree(calldata); |
5363 | } | |
5364 | ||
938e1010 AA |
5365 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5366 | { | |
5367 | struct nfs4_delegreturndata *d_data; | |
5368 | ||
5369 | d_data = (struct nfs4_delegreturndata *)data; | |
5370 | ||
500d701f PT |
5371 | if (nfs4_wait_on_layoutreturn(d_data->inode, task)) |
5372 | return; | |
5373 | ||
4ff376fe TM |
5374 | if (d_data->roc) |
5375 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5376 | |
d9afbd1b TM |
5377 | nfs4_setup_sequence(d_data->res.server, |
5378 | &d_data->args.seq_args, | |
5379 | &d_data->res.seq_res, | |
5380 | task); | |
938e1010 | 5381 | } |
938e1010 | 5382 | |
c8d149f3 | 5383 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5384 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5385 | .rpc_call_done = nfs4_delegreturn_done, |
5386 | .rpc_release = nfs4_delegreturn_release, | |
5387 | }; | |
5388 | ||
e6f81075 | 5389 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5390 | { |
5391 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5392 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5393 | struct rpc_task *task; |
5138fde0 TM |
5394 | struct rpc_message msg = { |
5395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5396 | .rpc_cred = cred, | |
5397 | }; | |
c970aa85 TM |
5398 | struct rpc_task_setup task_setup_data = { |
5399 | .rpc_client = server->client, | |
5138fde0 | 5400 | .rpc_message = &msg, |
c970aa85 TM |
5401 | .callback_ops = &nfs4_delegreturn_ops, |
5402 | .flags = RPC_TASK_ASYNC, | |
5403 | }; | |
e6f81075 | 5404 | int status = 0; |
fe650407 | 5405 | |
8535b2be | 5406 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5407 | if (data == NULL) |
5408 | return -ENOMEM; | |
a9c92d6b | 5409 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
99ade3c7 AE |
5410 | |
5411 | nfs4_state_protect(server->nfs_client, | |
5412 | NFS_SP4_MACH_CRED_CLEANUP, | |
5413 | &task_setup_data.rpc_client, &msg); | |
5414 | ||
fe650407 TM |
5415 | data->args.fhandle = &data->fh; |
5416 | data->args.stateid = &data->stateid; | |
9e907fec | 5417 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5418 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5419 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5420 | data->res.fattr = &data->fattr; |
5421 | data->res.server = server; | |
5138fde0 | 5422 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5423 | data->timestamp = jiffies; |
fe650407 | 5424 | data->rpc_status = 0; |
ea7c38fe TM |
5425 | data->inode = nfs_igrab_and_active(inode); |
5426 | if (data->inode) | |
5427 | data->roc = nfs4_roc(inode); | |
fe650407 | 5428 | |
c970aa85 | 5429 | task_setup_data.callback_data = data; |
1174dd1f TM |
5430 | msg.rpc_argp = &data->args; |
5431 | msg.rpc_resp = &data->res; | |
c970aa85 | 5432 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5433 | if (IS_ERR(task)) |
fe650407 | 5434 | return PTR_ERR(task); |
e6f81075 TM |
5435 | if (!issync) |
5436 | goto out; | |
fe650407 | 5437 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5438 | if (status != 0) |
5439 | goto out; | |
5440 | status = data->rpc_status; | |
e144cbcc TM |
5441 | if (status == 0) |
5442 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5443 | else | |
5444 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5445 | out: |
e6b3c4db | 5446 | rpc_put_task(task); |
fe650407 | 5447 | return status; |
1da177e4 LT |
5448 | } |
5449 | ||
e6f81075 | 5450 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5451 | { |
5452 | struct nfs_server *server = NFS_SERVER(inode); | |
5453 | struct nfs4_exception exception = { }; | |
5454 | int err; | |
5455 | do { | |
e6f81075 | 5456 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
48c9579a | 5457 | trace_nfs4_delegreturn(inode, stateid, err); |
1da177e4 LT |
5458 | switch (err) { |
5459 | case -NFS4ERR_STALE_STATEID: | |
5460 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5461 | case 0: |
5462 | return 0; | |
5463 | } | |
5464 | err = nfs4_handle_exception(server, err, &exception); | |
5465 | } while (exception.retry); | |
5466 | return err; | |
5467 | } | |
5468 | ||
5469 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
5470 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
5471 | ||
5472 | /* | |
5473 | * sleep, with exponential backoff, and retry the LOCK operation. | |
5474 | */ | |
5475 | static unsigned long | |
5476 | nfs4_set_lock_task_retry(unsigned long timeout) | |
5477 | { | |
416ad3c9 | 5478 | freezable_schedule_timeout_killable_unsafe(timeout); |
1da177e4 LT |
5479 | timeout <<= 1; |
5480 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
5481 | return NFS4_LOCK_MAXTIMEOUT; | |
5482 | return timeout; | |
5483 | } | |
5484 | ||
1da177e4 LT |
5485 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5486 | { | |
5487 | struct inode *inode = state->inode; | |
5488 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5489 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5490 | struct nfs_lockt_args arg = { |
1da177e4 | 5491 | .fh = NFS_FH(inode), |
911d1aaf | 5492 | .fl = request, |
1da177e4 | 5493 | }; |
911d1aaf TM |
5494 | struct nfs_lockt_res res = { |
5495 | .denied = request, | |
1da177e4 LT |
5496 | }; |
5497 | struct rpc_message msg = { | |
5498 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5499 | .rpc_argp = &arg, | |
5500 | .rpc_resp = &res, | |
5501 | .rpc_cred = state->owner->so_cred, | |
5502 | }; | |
1da177e4 LT |
5503 | struct nfs4_lock_state *lsp; |
5504 | int status; | |
5505 | ||
911d1aaf | 5506 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5507 | status = nfs4_set_lock_state(state, request); |
5508 | if (status != 0) | |
5509 | goto out; | |
5510 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5511 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5512 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5513 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5514 | switch (status) { |
5515 | case 0: | |
5516 | request->fl_type = F_UNLCK; | |
5517 | break; | |
5518 | case -NFS4ERR_DENIED: | |
5519 | status = 0; | |
1da177e4 | 5520 | } |
70cc6487 | 5521 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5522 | request->fl_ops = NULL; |
8d0a8a9d | 5523 | out: |
1da177e4 LT |
5524 | return status; |
5525 | } | |
5526 | ||
5527 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5528 | { | |
5529 | struct nfs4_exception exception = { }; | |
5530 | int err; | |
5531 | ||
5532 | do { | |
d1b748a5 TM |
5533 | err = _nfs4_proc_getlk(state, cmd, request); |
5534 | trace_nfs4_get_lock(request, state, cmd, err); | |
5535 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5536 | &exception); |
5537 | } while (exception.retry); | |
5538 | return err; | |
5539 | } | |
5540 | ||
83bfff23 | 5541 | static int do_vfs_lock(struct inode *inode, struct file_lock *fl) |
1da177e4 | 5542 | { |
4f656367 | 5543 | return locks_lock_inode_wait(inode, fl); |
1da177e4 LT |
5544 | } |
5545 | ||
faf5f49c | 5546 | struct nfs4_unlockdata { |
911d1aaf TM |
5547 | struct nfs_locku_args arg; |
5548 | struct nfs_locku_res res; | |
faf5f49c TM |
5549 | struct nfs4_lock_state *lsp; |
5550 | struct nfs_open_context *ctx; | |
911d1aaf | 5551 | struct file_lock fl; |
516285eb | 5552 | struct nfs_server *server; |
26e976a8 | 5553 | unsigned long timestamp; |
faf5f49c TM |
5554 | }; |
5555 | ||
911d1aaf TM |
5556 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5557 | struct nfs_open_context *ctx, | |
5558 | struct nfs4_lock_state *lsp, | |
5559 | struct nfs_seqid *seqid) | |
5560 | { | |
5561 | struct nfs4_unlockdata *p; | |
5562 | struct inode *inode = lsp->ls_state->inode; | |
5563 | ||
8535b2be | 5564 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5565 | if (p == NULL) |
5566 | return NULL; | |
5567 | p->arg.fh = NFS_FH(inode); | |
5568 | p->arg.fl = &p->fl; | |
5569 | p->arg.seqid = seqid; | |
c1d51931 | 5570 | p->res.seqid = seqid; |
911d1aaf TM |
5571 | p->lsp = lsp; |
5572 | atomic_inc(&lsp->ls_count); | |
5573 | /* Ensure we don't close file until we're done freeing locks! */ | |
5574 | p->ctx = get_nfs_open_context(ctx); | |
5575 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5576 | p->server = NFS_SERVER(inode); | |
5577 | return p; | |
5578 | } | |
5579 | ||
06f814a3 | 5580 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5581 | { |
963d8fe5 | 5582 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5583 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5584 | nfs4_put_lock_state(calldata->lsp); |
5585 | put_nfs_open_context(calldata->ctx); | |
5586 | kfree(calldata); | |
faf5f49c TM |
5587 | } |
5588 | ||
963d8fe5 | 5589 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5590 | { |
963d8fe5 | 5591 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5592 | |
14516c3a TM |
5593 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5594 | return; | |
faf5f49c TM |
5595 | switch (task->tk_status) { |
5596 | case 0: | |
26e976a8 | 5597 | renew_lease(calldata->server, calldata->timestamp); |
83bfff23 | 5598 | do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5599 | if (nfs4_update_lock_stateid(calldata->lsp, |
5600 | &calldata->res.stateid)) | |
5601 | break; | |
9e33bed5 TM |
5602 | case -NFS4ERR_BAD_STATEID: |
5603 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
5604 | case -NFS4ERR_STALE_STATEID: |
5605 | case -NFS4ERR_EXPIRED: | |
425c1d4e TM |
5606 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5607 | &calldata->lsp->ls_stateid)) | |
5608 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5609 | break; |
5610 | default: | |
8478eaa1 N |
5611 | if (nfs4_async_handle_error(task, calldata->server, |
5612 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5613 | rpc_restart_call_prepare(task); |
faf5f49c | 5614 | } |
2b1bc308 | 5615 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5616 | } |
5617 | ||
4ce70ada | 5618 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5619 | { |
4ce70ada | 5620 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5621 | |
911d1aaf | 5622 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5623 | goto out_wait; |
425c1d4e | 5624 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5625 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5626 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5627 | goto out_no_action; |
faf5f49c | 5628 | } |
26e976a8 | 5629 | calldata->timestamp = jiffies; |
035168ab | 5630 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5631 | &calldata->arg.seq_args, |
2240a9e2 TM |
5632 | &calldata->res.seq_res, |
5633 | task) != 0) | |
5634 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5635 | return; |
5636 | out_no_action: | |
5637 | task->tk_action = NULL; | |
5638 | out_wait: | |
5639 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5640 | } |
5641 | ||
963d8fe5 | 5642 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5643 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5644 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5645 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5646 | }; |
5647 | ||
a5d16a4d TM |
5648 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5649 | struct nfs_open_context *ctx, | |
5650 | struct nfs4_lock_state *lsp, | |
5651 | struct nfs_seqid *seqid) | |
5652 | { | |
5653 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5654 | struct rpc_message msg = { |
5655 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5656 | .rpc_cred = ctx->cred, | |
5657 | }; | |
c970aa85 TM |
5658 | struct rpc_task_setup task_setup_data = { |
5659 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5660 | .rpc_message = &msg, |
c970aa85 | 5661 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5662 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5663 | .flags = RPC_TASK_ASYNC, |
5664 | }; | |
a5d16a4d | 5665 | |
fa940720 WAA |
5666 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5667 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5668 | ||
137d6aca FF |
5669 | /* Ensure this is an unlock - when canceling a lock, the |
5670 | * canceled lock is passed in, and it won't be an unlock. | |
5671 | */ | |
5672 | fl->fl_type = F_UNLCK; | |
5673 | ||
a5d16a4d TM |
5674 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5675 | if (data == NULL) { | |
5676 | nfs_free_seqid(seqid); | |
5677 | return ERR_PTR(-ENOMEM); | |
5678 | } | |
5679 | ||
a9c92d6b | 5680 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5681 | msg.rpc_argp = &data->arg; |
5682 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5683 | task_setup_data.callback_data = data; |
5684 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5685 | } |
5686 | ||
faf5f49c TM |
5687 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5688 | { | |
65b62a29 TM |
5689 | struct inode *inode = state->inode; |
5690 | struct nfs4_state_owner *sp = state->owner; | |
5691 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5692 | struct nfs_seqid *seqid; |
1da177e4 | 5693 | struct nfs4_lock_state *lsp; |
06f814a3 | 5694 | struct rpc_task *task; |
b4019c0e | 5695 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5696 | int status = 0; |
536ff0f8 | 5697 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5698 | |
8d0a8a9d | 5699 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5700 | /* Unlock _before_ we do the RPC call */ |
5701 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5702 | /* Exclude nfs_delegation_claim_locks() */ |
5703 | mutex_lock(&sp->so_delegreturn_mutex); | |
5704 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5705 | down_read(&nfsi->rwsem); |
83bfff23 | 5706 | if (do_vfs_lock(inode, request) == -ENOENT) { |
19e03c57 | 5707 | up_read(&nfsi->rwsem); |
65b62a29 | 5708 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5709 | goto out; |
19e03c57 TM |
5710 | } |
5711 | up_read(&nfsi->rwsem); | |
65b62a29 | 5712 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5713 | if (status != 0) |
9b073574 TM |
5714 | goto out; |
5715 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5716 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5717 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5718 | goto out; | |
b4019c0e TM |
5719 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5720 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5721 | status = -ENOMEM; |
badc76dd | 5722 | if (IS_ERR(seqid)) |
9b073574 | 5723 | goto out; |
cd3758e3 | 5724 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5725 | status = PTR_ERR(task); |
5726 | if (IS_ERR(task)) | |
9b073574 | 5727 | goto out; |
a5d16a4d | 5728 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5729 | rpc_put_task(task); |
9b073574 | 5730 | out: |
536ff0f8 | 5731 | request->fl_flags = fl_flags; |
d1b748a5 | 5732 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5733 | return status; |
5734 | } | |
5735 | ||
a5d16a4d TM |
5736 | struct nfs4_lockdata { |
5737 | struct nfs_lock_args arg; | |
5738 | struct nfs_lock_res res; | |
5739 | struct nfs4_lock_state *lsp; | |
5740 | struct nfs_open_context *ctx; | |
5741 | struct file_lock fl; | |
26e976a8 | 5742 | unsigned long timestamp; |
a5d16a4d TM |
5743 | int rpc_status; |
5744 | int cancelled; | |
66179efe | 5745 | struct nfs_server *server; |
a5d16a4d TM |
5746 | }; |
5747 | ||
5748 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5749 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5750 | gfp_t gfp_mask) | |
1da177e4 | 5751 | { |
a5d16a4d TM |
5752 | struct nfs4_lockdata *p; |
5753 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5754 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5755 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5756 | |
8535b2be | 5757 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5758 | if (p == NULL) |
5759 | return NULL; | |
5760 | ||
5761 | p->arg.fh = NFS_FH(inode); | |
5762 | p->arg.fl = &p->fl; | |
8535b2be | 5763 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5764 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5765 | goto out_free; |
b4019c0e TM |
5766 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5767 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5768 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5769 | goto out_free_seqid; |
7539bbab | 5770 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5771 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5772 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5773 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5774 | p->lsp = lsp; |
66179efe | 5775 | p->server = server; |
a5d16a4d TM |
5776 | atomic_inc(&lsp->ls_count); |
5777 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5778 | get_file(fl->fl_file); |
a5d16a4d TM |
5779 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5780 | return p; | |
2f74c0a0 TM |
5781 | out_free_seqid: |
5782 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5783 | out_free: |
5784 | kfree(p); | |
5785 | return NULL; | |
5786 | } | |
5787 | ||
5788 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5789 | { | |
5790 | struct nfs4_lockdata *data = calldata; | |
5791 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5792 | |
3110ff80 | 5793 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5794 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5795 | goto out_wait; |
a5d16a4d | 5796 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5797 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5798 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5799 | goto out_release_lock_seqid; |
8fe72bac | 5800 | } |
425c1d4e TM |
5801 | nfs4_stateid_copy(&data->arg.open_stateid, |
5802 | &state->open_stateid); | |
a5d16a4d | 5803 | data->arg.new_lock_owner = 1; |
c1d51931 | 5804 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5805 | } else { |
2f74c0a0 | 5806 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5807 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5808 | &data->lsp->ls_stateid); | |
5809 | } | |
5d422301 TM |
5810 | if (!nfs4_valid_open_stateid(state)) { |
5811 | data->rpc_status = -EBADF; | |
5812 | task->tk_action = NULL; | |
5813 | goto out_release_open_seqid; | |
5814 | } | |
26e976a8 | 5815 | data->timestamp = jiffies; |
035168ab TM |
5816 | if (nfs4_setup_sequence(data->server, |
5817 | &data->arg.seq_args, | |
2240a9e2 | 5818 | &data->res.seq_res, |
d9afbd1b | 5819 | task) == 0) |
66179efe | 5820 | return; |
5d422301 | 5821 | out_release_open_seqid: |
2240a9e2 TM |
5822 | nfs_release_seqid(data->arg.open_seqid); |
5823 | out_release_lock_seqid: | |
5824 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5825 | out_wait: |
5826 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5827 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5828 | } |
5829 | ||
a5d16a4d TM |
5830 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5831 | { | |
5832 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5833 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5834 | |
3110ff80 | 5835 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 5836 | |
14516c3a TM |
5837 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5838 | return; | |
66179efe | 5839 | |
a5d16a4d | 5840 | data->rpc_status = task->tk_status; |
425c1d4e TM |
5841 | switch (task->tk_status) { |
5842 | case 0: | |
2b0143b5 | 5843 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 5844 | data->timestamp); |
c69899a1 TM |
5845 | if (data->arg.new_lock) { |
5846 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
83bfff23 | 5847 | if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
5848 | rpc_restart_call_prepare(task); |
5849 | break; | |
5850 | } | |
5851 | } | |
39071e6f TM |
5852 | if (data->arg.new_lock_owner != 0) { |
5853 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
5854 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
5855 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
5856 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
5857 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
5858 | break; |
5859 | case -NFS4ERR_BAD_STATEID: | |
5860 | case -NFS4ERR_OLD_STATEID: | |
5861 | case -NFS4ERR_STALE_STATEID: | |
5862 | case -NFS4ERR_EXPIRED: | |
5863 | if (data->arg.new_lock_owner != 0) { | |
5864 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
5865 | &lsp->ls_state->open_stateid)) | |
5866 | rpc_restart_call_prepare(task); | |
5867 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
5868 | &lsp->ls_stateid)) | |
5869 | rpc_restart_call_prepare(task); | |
a5d16a4d | 5870 | } |
3110ff80 | 5871 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
5872 | } |
5873 | ||
5874 | static void nfs4_lock_release(void *calldata) | |
5875 | { | |
5876 | struct nfs4_lockdata *data = calldata; | |
5877 | ||
3110ff80 | 5878 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5879 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
5880 | if (data->cancelled != 0) { |
5881 | struct rpc_task *task; | |
5882 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
5883 | data->arg.lock_seqid); | |
5884 | if (!IS_ERR(task)) | |
bf294b41 | 5885 | rpc_put_task_async(task); |
3110ff80 | 5886 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
5887 | } else |
5888 | nfs_free_seqid(data->arg.lock_seqid); | |
5889 | nfs4_put_lock_state(data->lsp); | |
5890 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 5891 | fput(data->fl.fl_file); |
a5d16a4d | 5892 | kfree(data); |
3110ff80 | 5893 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
5894 | } |
5895 | ||
5896 | static const struct rpc_call_ops nfs4_lock_ops = { | |
5897 | .rpc_call_prepare = nfs4_lock_prepare, | |
5898 | .rpc_call_done = nfs4_lock_done, | |
5899 | .rpc_release = nfs4_lock_release, | |
5900 | }; | |
5901 | ||
2bee72a6 TM |
5902 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
5903 | { | |
2bee72a6 TM |
5904 | switch (error) { |
5905 | case -NFS4ERR_ADMIN_REVOKED: | |
5906 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 5907 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 5908 | if (new_lock_owner != 0 || |
795a88c9 | 5909 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 5910 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
5911 | break; |
5912 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 5913 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
5914 | case -NFS4ERR_EXPIRED: |
5915 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
5916 | }; |
5917 | } | |
5918 | ||
afe6c27c | 5919 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
5920 | { |
5921 | struct nfs4_lockdata *data; | |
5922 | struct rpc_task *task; | |
5138fde0 TM |
5923 | struct rpc_message msg = { |
5924 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
5925 | .rpc_cred = state->owner->so_cred, | |
5926 | }; | |
c970aa85 TM |
5927 | struct rpc_task_setup task_setup_data = { |
5928 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 5929 | .rpc_message = &msg, |
c970aa85 | 5930 | .callback_ops = &nfs4_lock_ops, |
101070ca | 5931 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5932 | .flags = RPC_TASK_ASYNC, |
5933 | }; | |
a5d16a4d TM |
5934 | int ret; |
5935 | ||
3110ff80 | 5936 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 5937 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
5938 | fl->fl_u.nfs4_fl.owner, |
5939 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
5940 | if (data == NULL) |
5941 | return -ENOMEM; | |
5942 | if (IS_SETLKW(cmd)) | |
5943 | data->arg.block = 1; | |
a9c92d6b | 5944 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5945 | msg.rpc_argp = &data->arg; |
5946 | msg.rpc_resp = &data->res; | |
c970aa85 | 5947 | task_setup_data.callback_data = data; |
8fe72bac TM |
5948 | if (recovery_type > NFS_LOCK_NEW) { |
5949 | if (recovery_type == NFS_LOCK_RECLAIM) | |
5950 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
5951 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
5952 | } else |
5953 | data->arg.new_lock = 1; | |
c970aa85 | 5954 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5955 | if (IS_ERR(task)) |
a5d16a4d | 5956 | return PTR_ERR(task); |
a5d16a4d TM |
5957 | ret = nfs4_wait_for_completion_rpc_task(task); |
5958 | if (ret == 0) { | |
5959 | ret = data->rpc_status; | |
2bee72a6 TM |
5960 | if (ret) |
5961 | nfs4_handle_setlk_error(data->server, data->lsp, | |
5962 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
5963 | } else |
5964 | data->cancelled = 1; | |
e6b3c4db | 5965 | rpc_put_task(task); |
3110ff80 | 5966 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
48c9579a | 5967 | trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret); |
a5d16a4d | 5968 | return ret; |
1da177e4 LT |
5969 | } |
5970 | ||
5971 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
5972 | { | |
202b50dc | 5973 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5974 | struct nfs4_exception exception = { |
5975 | .inode = state->inode, | |
5976 | }; | |
202b50dc TM |
5977 | int err; |
5978 | ||
5979 | do { | |
42a2d13e TM |
5980 | /* Cache the lock if possible... */ |
5981 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5982 | return 0; | |
afe6c27c | 5983 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5984 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5985 | break; |
5986 | nfs4_handle_exception(server, err, &exception); | |
5987 | } while (exception.retry); | |
5988 | return err; | |
1da177e4 LT |
5989 | } |
5990 | ||
5991 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5992 | { | |
202b50dc | 5993 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5994 | struct nfs4_exception exception = { |
5995 | .inode = state->inode, | |
5996 | }; | |
202b50dc TM |
5997 | int err; |
5998 | ||
6bfc93ef TM |
5999 | err = nfs4_set_lock_state(state, request); |
6000 | if (err != 0) | |
6001 | return err; | |
f6de7a39 | 6002 | if (!recover_lost_locks) { |
ef1820f9 N |
6003 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
6004 | return 0; | |
6005 | } | |
202b50dc | 6006 | do { |
42a2d13e TM |
6007 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
6008 | return 0; | |
afe6c27c | 6009 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
6010 | switch (err) { |
6011 | default: | |
6012 | goto out; | |
6013 | case -NFS4ERR_GRACE: | |
6014 | case -NFS4ERR_DELAY: | |
6015 | nfs4_handle_exception(server, err, &exception); | |
6016 | err = 0; | |
6017 | } | |
202b50dc | 6018 | } while (exception.retry); |
a9ed2e25 | 6019 | out: |
202b50dc | 6020 | return err; |
1da177e4 LT |
6021 | } |
6022 | ||
f062eb6c | 6023 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
6024 | /** |
6025 | * nfs41_check_expired_locks - possibly free a lock stateid | |
6026 | * | |
6027 | * @state: NFSv4 state for an inode | |
6028 | * | |
6029 | * Returns NFS_OK if recovery for this stateid is now finished. | |
6030 | * Otherwise a negative NFS4ERR value is returned. | |
6031 | */ | |
b01dd1d8 | 6032 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 6033 | { |
eb64cf96 | 6034 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 6035 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
6036 | struct nfs_server *server = NFS_SERVER(state->inode); |
6037 | ||
b01dd1d8 | 6038 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 6039 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
ab7cb0df TM |
6040 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
6041 | ||
6042 | status = nfs41_test_stateid(server, | |
6043 | &lsp->ls_stateid, | |
6044 | cred); | |
08cb47fa | 6045 | trace_nfs4_test_lock_stateid(state, lsp, status); |
b01dd1d8 | 6046 | if (status != NFS_OK) { |
3e60ffdd CL |
6047 | /* Free the stateid unless the server |
6048 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
6049 | if (status != -NFS4ERR_BAD_STATEID) |
6050 | nfs41_free_stateid(server, | |
ab7cb0df TM |
6051 | &lsp->ls_stateid, |
6052 | cred); | |
795a88c9 | 6053 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
6054 | ret = status; |
6055 | } | |
6056 | } | |
6057 | }; | |
6058 | ||
6059 | return ret; | |
6060 | } | |
6061 | ||
6062 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6063 | { | |
6064 | int status = NFS_OK; | |
6065 | ||
6066 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
6067 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
6068 | if (status != NFS_OK) |
6069 | status = nfs4_lock_expired(state, request); | |
6070 | return status; | |
f062eb6c BS |
6071 | } |
6072 | #endif | |
6073 | ||
1da177e4 LT |
6074 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6075 | { | |
19e03c57 | 6076 | struct nfs_inode *nfsi = NFS_I(state->inode); |
11476e9d | 6077 | struct nfs4_state_owner *sp = state->owner; |
01c3b861 | 6078 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 6079 | int status = -ENOLCK; |
1da177e4 | 6080 | |
8e469ebd TM |
6081 | if ((fl_flags & FL_POSIX) && |
6082 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6083 | goto out; | |
6bfc93ef | 6084 | /* Is this a delegated open? */ |
6bfc93ef TM |
6085 | status = nfs4_set_lock_state(state, request); |
6086 | if (status != 0) | |
6087 | goto out; | |
01c3b861 | 6088 | request->fl_flags |= FL_ACCESS; |
83bfff23 | 6089 | status = do_vfs_lock(state->inode, request); |
01c3b861 TM |
6090 | if (status < 0) |
6091 | goto out; | |
11476e9d | 6092 | mutex_lock(&sp->so_delegreturn_mutex); |
19e03c57 | 6093 | down_read(&nfsi->rwsem); |
01c3b861 | 6094 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6095 | /* Yes: cache locks! */ |
01c3b861 | 6096 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6097 | request->fl_flags = fl_flags & ~FL_SLEEP; |
83bfff23 | 6098 | status = do_vfs_lock(state->inode, request); |
c69899a1 | 6099 | up_read(&nfsi->rwsem); |
11476e9d | 6100 | mutex_unlock(&sp->so_delegreturn_mutex); |
9a99af49 | 6101 | goto out; |
9a99af49 | 6102 | } |
19e03c57 | 6103 | up_read(&nfsi->rwsem); |
11476e9d | 6104 | mutex_unlock(&sp->so_delegreturn_mutex); |
c69899a1 | 6105 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6106 | out: |
6107 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6108 | return status; |
6109 | } | |
6110 | ||
6111 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6112 | { | |
a1d0b5ee TM |
6113 | struct nfs4_exception exception = { |
6114 | .state = state, | |
05ffe24f | 6115 | .inode = state->inode, |
a1d0b5ee | 6116 | }; |
1da177e4 LT |
6117 | int err; |
6118 | ||
6119 | do { | |
965b5d67 TM |
6120 | err = _nfs4_proc_setlk(state, cmd, request); |
6121 | if (err == -NFS4ERR_DENIED) | |
6122 | err = -EAGAIN; | |
1da177e4 | 6123 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6124 | err, &exception); |
1da177e4 LT |
6125 | } while (exception.retry); |
6126 | return err; | |
6127 | } | |
6128 | ||
6129 | static int | |
6130 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6131 | { | |
6132 | struct nfs_open_context *ctx; | |
6133 | struct nfs4_state *state; | |
6134 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6135 | int status; | |
6136 | ||
6137 | /* verify open state */ | |
cd3758e3 | 6138 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6139 | state = ctx->state; |
6140 | ||
6141 | if (request->fl_start < 0 || request->fl_end < 0) | |
6142 | return -EINVAL; | |
6143 | ||
d953126a TM |
6144 | if (IS_GETLK(cmd)) { |
6145 | if (state != NULL) | |
6146 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6147 | return 0; | |
6148 | } | |
1da177e4 LT |
6149 | |
6150 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6151 | return -EINVAL; | |
6152 | ||
d953126a TM |
6153 | if (request->fl_type == F_UNLCK) { |
6154 | if (state != NULL) | |
6155 | return nfs4_proc_unlck(state, cmd, request); | |
6156 | return 0; | |
6157 | } | |
1da177e4 | 6158 | |
d953126a TM |
6159 | if (state == NULL) |
6160 | return -ENOLCK; | |
55725513 TM |
6161 | /* |
6162 | * Don't rely on the VFS having checked the file open mode, | |
6163 | * since it won't do this for flock() locks. | |
6164 | */ | |
f44106e2 | 6165 | switch (request->fl_type) { |
55725513 TM |
6166 | case F_RDLCK: |
6167 | if (!(filp->f_mode & FMODE_READ)) | |
6168 | return -EBADF; | |
6169 | break; | |
6170 | case F_WRLCK: | |
6171 | if (!(filp->f_mode & FMODE_WRITE)) | |
6172 | return -EBADF; | |
6173 | } | |
6174 | ||
1da177e4 LT |
6175 | do { |
6176 | status = nfs4_proc_setlk(state, cmd, request); | |
6177 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6178 | break; | |
6179 | timeout = nfs4_set_lock_task_retry(timeout); | |
6180 | status = -ERESTARTSYS; | |
6181 | if (signalled()) | |
6182 | break; | |
6183 | } while(status < 0); | |
1da177e4 LT |
6184 | return status; |
6185 | } | |
6186 | ||
db4f2e63 | 6187 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6188 | { |
6189 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6190 | int err; |
6191 | ||
6192 | err = nfs4_set_lock_state(state, fl); | |
6193 | if (err != 0) | |
db4f2e63 | 6194 | return err; |
4a706fa0 | 6195 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6196 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6197 | } |
6b3b5496 | 6198 | |
cf470c3e TM |
6199 | struct nfs_release_lockowner_data { |
6200 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6201 | struct nfs_server *server; |
cf470c3e | 6202 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6203 | struct nfs_release_lockowner_res res; |
60ea6812 | 6204 | unsigned long timestamp; |
cf470c3e TM |
6205 | }; |
6206 | ||
fbd4bfd1 CL |
6207 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6208 | { | |
6209 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6210 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6211 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6212 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6213 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6214 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6215 | } |
6216 | ||
6217 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6218 | { | |
6219 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6220 | struct nfs_server *server = data->server; |
6221 | ||
b7e63a10 | 6222 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6223 | |
6224 | switch (task->tk_status) { | |
6225 | case 0: | |
6226 | renew_lease(server, data->timestamp); | |
6227 | break; | |
6228 | case -NFS4ERR_STALE_CLIENTID: | |
6229 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6230 | nfs4_schedule_lease_recovery(server->nfs_client); |
6231 | break; | |
60ea6812 CL |
6232 | case -NFS4ERR_LEASE_MOVED: |
6233 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6234 | if (nfs4_async_handle_error(task, server, |
6235 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6236 | rpc_restart_call_prepare(task); |
6237 | } | |
fbd4bfd1 CL |
6238 | } |
6239 | ||
d3c7b7cc TM |
6240 | static void nfs4_release_lockowner_release(void *calldata) |
6241 | { | |
cf470c3e | 6242 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6243 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6244 | kfree(calldata); |
6245 | } | |
6246 | ||
17280175 | 6247 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6248 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6249 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6250 | .rpc_release = nfs4_release_lockowner_release, |
6251 | }; | |
6252 | ||
f1cdae87 JL |
6253 | static void |
6254 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6255 | { |
cf470c3e | 6256 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6257 | struct rpc_message msg = { |
6258 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6259 | }; | |
6260 | ||
6261 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6262 | return; |
fbd4bfd1 | 6263 | |
cf470c3e TM |
6264 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6265 | if (!data) | |
f1cdae87 | 6266 | return; |
cf470c3e | 6267 | data->lsp = lsp; |
5ae67c4f | 6268 | data->server = server; |
cf470c3e TM |
6269 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6270 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6271 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6272 | |
cf470c3e | 6273 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6274 | msg.rpc_resp = &data->res; |
6275 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6276 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6277 | } |
6278 | ||
aa1870af BF |
6279 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6280 | ||
d9a82a04 | 6281 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
59301226 AV |
6282 | struct dentry *unused, struct inode *inode, |
6283 | const char *key, const void *buf, | |
6284 | size_t buflen, int flags) | |
6b3b5496 | 6285 | { |
59301226 | 6286 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
6287 | } |
6288 | ||
d9a82a04 | 6289 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
b296821a AV |
6290 | struct dentry *unused, struct inode *inode, |
6291 | const char *key, void *buf, size_t buflen) | |
6b3b5496 | 6292 | { |
b296821a | 6293 | return nfs4_proc_get_acl(inode, buf, buflen); |
6b3b5496 BF |
6294 | } |
6295 | ||
764a5c6b | 6296 | static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry) |
6b3b5496 | 6297 | { |
764a5c6b | 6298 | return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry))); |
6b3b5496 BF |
6299 | } |
6300 | ||
c9bccef6 | 6301 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
c9bccef6 | 6302 | |
d9a82a04 | 6303 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
59301226 AV |
6304 | struct dentry *unused, struct inode *inode, |
6305 | const char *key, const void *buf, | |
6306 | size_t buflen, int flags) | |
c9bccef6 DQ |
6307 | { |
6308 | if (security_ismaclabel(key)) | |
59301226 | 6309 | return nfs4_set_security_label(inode, buf, buflen); |
c9bccef6 DQ |
6310 | |
6311 | return -EOPNOTSUPP; | |
6312 | } | |
6313 | ||
d9a82a04 | 6314 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
b296821a AV |
6315 | struct dentry *unused, struct inode *inode, |
6316 | const char *key, void *buf, size_t buflen) | |
c9bccef6 DQ |
6317 | { |
6318 | if (security_ismaclabel(key)) | |
b296821a | 6319 | return nfs4_get_security_label(inode, buf, buflen); |
c9bccef6 DQ |
6320 | return -EOPNOTSUPP; |
6321 | } | |
6322 | ||
c4803c49 AG |
6323 | static ssize_t |
6324 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
c9bccef6 | 6325 | { |
c4803c49 | 6326 | int len = 0; |
c9bccef6 | 6327 | |
c4803c49 AG |
6328 | if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) { |
6329 | len = security_inode_listsecurity(inode, list, list_len); | |
6330 | if (list_len && len > list_len) | |
6331 | return -ERANGE; | |
c9bccef6 DQ |
6332 | } |
6333 | return len; | |
6334 | } | |
6335 | ||
6336 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6337 | .prefix = XATTR_SECURITY_PREFIX, | |
c9bccef6 DQ |
6338 | .get = nfs4_xattr_get_nfs4_label, |
6339 | .set = nfs4_xattr_set_nfs4_label, | |
6340 | }; | |
c9bccef6 | 6341 | |
c4803c49 AG |
6342 | #else |
6343 | ||
6344 | static ssize_t | |
6345 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
6346 | { | |
6347 | return 0; | |
6348 | } | |
6349 | ||
6350 | #endif | |
c9bccef6 | 6351 | |
533eb461 AA |
6352 | /* |
6353 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6354 | */ | |
69aaaae1 TM |
6355 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6356 | { | |
533eb461 AA |
6357 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6358 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6359 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6360 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6361 | return; |
6362 | ||
6363 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6364 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6365 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6366 | fattr->nlink = 2; | |
6367 | } | |
6368 | ||
f05d147f BS |
6369 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6370 | const struct qstr *name, | |
6371 | struct nfs4_fs_locations *fs_locations, | |
6372 | struct page *page) | |
683b57b4 TM |
6373 | { |
6374 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6375 | u32 bitmask[3] = { |
361e624f | 6376 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6377 | }; |
6378 | struct nfs4_fs_locations_arg args = { | |
6379 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6380 | .name = name, |
683b57b4 TM |
6381 | .page = page, |
6382 | .bitmask = bitmask, | |
6383 | }; | |
22958463 BH |
6384 | struct nfs4_fs_locations_res res = { |
6385 | .fs_locations = fs_locations, | |
6386 | }; | |
683b57b4 TM |
6387 | struct rpc_message msg = { |
6388 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6389 | .rpc_argp = &args, | |
22958463 | 6390 | .rpc_resp = &res, |
683b57b4 TM |
6391 | }; |
6392 | int status; | |
6393 | ||
3110ff80 | 6394 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6395 | |
6396 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6397 | * is not supported */ | |
6398 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6399 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6400 | else | |
6401 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6402 | ||
c228fd3a | 6403 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6404 | fs_locations->server = server; |
830b8e33 | 6405 | fs_locations->nlocations = 0; |
f05d147f | 6406 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6407 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6408 | return status; |
6409 | } | |
6410 | ||
f05d147f BS |
6411 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6412 | const struct qstr *name, | |
6413 | struct nfs4_fs_locations *fs_locations, | |
6414 | struct page *page) | |
db0a9593 BS |
6415 | { |
6416 | struct nfs4_exception exception = { }; | |
6417 | int err; | |
6418 | do { | |
078ea3df TM |
6419 | err = _nfs4_proc_fs_locations(client, dir, name, |
6420 | fs_locations, page); | |
6421 | trace_nfs4_get_fs_locations(dir, name, err); | |
6422 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6423 | &exception); |
6424 | } while (exception.retry); | |
6425 | return err; | |
6426 | } | |
6427 | ||
b03d735b CL |
6428 | /* |
6429 | * This operation also signals the server that this client is | |
6430 | * performing migration recovery. The server can stop returning | |
6431 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6432 | * appended to this compound to identify the client ID which is | |
6433 | * performing recovery. | |
6434 | */ | |
6435 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6436 | struct nfs4_fs_locations *locations, | |
6437 | struct page *page, struct rpc_cred *cred) | |
6438 | { | |
6439 | struct nfs_server *server = NFS_SERVER(inode); | |
6440 | struct rpc_clnt *clnt = server->client; | |
6441 | u32 bitmask[2] = { | |
6442 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6443 | }; | |
6444 | struct nfs4_fs_locations_arg args = { | |
6445 | .clientid = server->nfs_client->cl_clientid, | |
6446 | .fh = NFS_FH(inode), | |
6447 | .page = page, | |
6448 | .bitmask = bitmask, | |
6449 | .migration = 1, /* skip LOOKUP */ | |
6450 | .renew = 1, /* append RENEW */ | |
6451 | }; | |
6452 | struct nfs4_fs_locations_res res = { | |
6453 | .fs_locations = locations, | |
6454 | .migration = 1, | |
6455 | .renew = 1, | |
6456 | }; | |
6457 | struct rpc_message msg = { | |
6458 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6459 | .rpc_argp = &args, | |
6460 | .rpc_resp = &res, | |
6461 | .rpc_cred = cred, | |
6462 | }; | |
6463 | unsigned long now = jiffies; | |
6464 | int status; | |
6465 | ||
6466 | nfs_fattr_init(&locations->fattr); | |
6467 | locations->server = server; | |
6468 | locations->nlocations = 0; | |
6469 | ||
6470 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6471 | nfs4_set_sequence_privileged(&args.seq_args); | |
6472 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6473 | &args.seq_args, &res.seq_res); | |
6474 | if (status) | |
6475 | return status; | |
6476 | ||
6477 | renew_lease(server, now); | |
6478 | return 0; | |
6479 | } | |
6480 | ||
6481 | #ifdef CONFIG_NFS_V4_1 | |
6482 | ||
6483 | /* | |
6484 | * This operation also signals the server that this client is | |
6485 | * performing migration recovery. The server can stop asserting | |
6486 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6487 | * performing this operation is identified in the SEQUENCE | |
6488 | * operation in this compound. | |
6489 | * | |
6490 | * When the client supports GETATTR(fs_locations_info), it can | |
6491 | * be plumbed in here. | |
6492 | */ | |
6493 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6494 | struct nfs4_fs_locations *locations, | |
6495 | struct page *page, struct rpc_cred *cred) | |
6496 | { | |
6497 | struct nfs_server *server = NFS_SERVER(inode); | |
6498 | struct rpc_clnt *clnt = server->client; | |
6499 | u32 bitmask[2] = { | |
6500 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6501 | }; | |
6502 | struct nfs4_fs_locations_arg args = { | |
6503 | .fh = NFS_FH(inode), | |
6504 | .page = page, | |
6505 | .bitmask = bitmask, | |
6506 | .migration = 1, /* skip LOOKUP */ | |
6507 | }; | |
6508 | struct nfs4_fs_locations_res res = { | |
6509 | .fs_locations = locations, | |
6510 | .migration = 1, | |
6511 | }; | |
6512 | struct rpc_message msg = { | |
6513 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6514 | .rpc_argp = &args, | |
6515 | .rpc_resp = &res, | |
6516 | .rpc_cred = cred, | |
6517 | }; | |
6518 | int status; | |
6519 | ||
6520 | nfs_fattr_init(&locations->fattr); | |
6521 | locations->server = server; | |
6522 | locations->nlocations = 0; | |
6523 | ||
6524 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6525 | nfs4_set_sequence_privileged(&args.seq_args); | |
6526 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6527 | &args.seq_args, &res.seq_res); | |
6528 | if (status == NFS4_OK && | |
6529 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6530 | status = -NFS4ERR_LEASE_MOVED; | |
6531 | return status; | |
6532 | } | |
6533 | ||
6534 | #endif /* CONFIG_NFS_V4_1 */ | |
6535 | ||
6536 | /** | |
6537 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6538 | * @inode: inode on FSID that is migrating | |
6539 | * @locations: result of query | |
6540 | * @page: buffer | |
6541 | * @cred: credential to use for this operation | |
6542 | * | |
6543 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6544 | * operation failed, or a negative errno if a local error occurred. | |
6545 | * | |
6546 | * On success, "locations" is filled in, but if the server has | |
6547 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6548 | * asserted. | |
6549 | * | |
6550 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6551 | * from this client that require migration recovery. | |
6552 | */ | |
6553 | int nfs4_proc_get_locations(struct inode *inode, | |
6554 | struct nfs4_fs_locations *locations, | |
6555 | struct page *page, struct rpc_cred *cred) | |
6556 | { | |
6557 | struct nfs_server *server = NFS_SERVER(inode); | |
6558 | struct nfs_client *clp = server->nfs_client; | |
6559 | const struct nfs4_mig_recovery_ops *ops = | |
6560 | clp->cl_mvops->mig_recovery_ops; | |
6561 | struct nfs4_exception exception = { }; | |
6562 | int status; | |
6563 | ||
6564 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6565 | (unsigned long long)server->fsid.major, | |
6566 | (unsigned long long)server->fsid.minor, | |
6567 | clp->cl_hostname); | |
6568 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6569 | ||
6570 | do { | |
6571 | status = ops->get_locations(inode, locations, page, cred); | |
6572 | if (status != -NFS4ERR_DELAY) | |
6573 | break; | |
6574 | nfs4_handle_exception(server, status, &exception); | |
6575 | } while (exception.retry); | |
6576 | return status; | |
6577 | } | |
6578 | ||
44c99933 CL |
6579 | /* |
6580 | * This operation also signals the server that this client is | |
6581 | * performing "lease moved" recovery. The server can stop | |
6582 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6583 | * is appended to this compound to identify the client ID which is | |
6584 | * performing recovery. | |
6585 | */ | |
6586 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6587 | { | |
6588 | struct nfs_server *server = NFS_SERVER(inode); | |
6589 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6590 | struct rpc_clnt *clnt = server->client; | |
6591 | struct nfs4_fsid_present_arg args = { | |
6592 | .fh = NFS_FH(inode), | |
6593 | .clientid = clp->cl_clientid, | |
6594 | .renew = 1, /* append RENEW */ | |
6595 | }; | |
6596 | struct nfs4_fsid_present_res res = { | |
6597 | .renew = 1, | |
6598 | }; | |
6599 | struct rpc_message msg = { | |
6600 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6601 | .rpc_argp = &args, | |
6602 | .rpc_resp = &res, | |
6603 | .rpc_cred = cred, | |
6604 | }; | |
6605 | unsigned long now = jiffies; | |
6606 | int status; | |
6607 | ||
6608 | res.fh = nfs_alloc_fhandle(); | |
6609 | if (res.fh == NULL) | |
6610 | return -ENOMEM; | |
6611 | ||
6612 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6613 | nfs4_set_sequence_privileged(&args.seq_args); | |
6614 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6615 | &args.seq_args, &res.seq_res); | |
6616 | nfs_free_fhandle(res.fh); | |
6617 | if (status) | |
6618 | return status; | |
6619 | ||
6620 | do_renew_lease(clp, now); | |
6621 | return 0; | |
6622 | } | |
6623 | ||
6624 | #ifdef CONFIG_NFS_V4_1 | |
6625 | ||
6626 | /* | |
6627 | * This operation also signals the server that this client is | |
6628 | * performing "lease moved" recovery. The server can stop asserting | |
6629 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6630 | * this operation is identified in the SEQUENCE operation in this | |
6631 | * compound. | |
6632 | */ | |
6633 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6634 | { | |
6635 | struct nfs_server *server = NFS_SERVER(inode); | |
6636 | struct rpc_clnt *clnt = server->client; | |
6637 | struct nfs4_fsid_present_arg args = { | |
6638 | .fh = NFS_FH(inode), | |
6639 | }; | |
6640 | struct nfs4_fsid_present_res res = { | |
6641 | }; | |
6642 | struct rpc_message msg = { | |
6643 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6644 | .rpc_argp = &args, | |
6645 | .rpc_resp = &res, | |
6646 | .rpc_cred = cred, | |
6647 | }; | |
6648 | int status; | |
6649 | ||
6650 | res.fh = nfs_alloc_fhandle(); | |
6651 | if (res.fh == NULL) | |
6652 | return -ENOMEM; | |
6653 | ||
6654 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6655 | nfs4_set_sequence_privileged(&args.seq_args); | |
6656 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6657 | &args.seq_args, &res.seq_res); | |
6658 | nfs_free_fhandle(res.fh); | |
6659 | if (status == NFS4_OK && | |
6660 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6661 | status = -NFS4ERR_LEASE_MOVED; | |
6662 | return status; | |
6663 | } | |
6664 | ||
6665 | #endif /* CONFIG_NFS_V4_1 */ | |
6666 | ||
6667 | /** | |
6668 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6669 | * @inode: inode on FSID to check | |
6670 | * @cred: credential to use for this operation | |
6671 | * | |
6672 | * Server indicates whether the FSID is present, moved, or not | |
6673 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6674 | * condition for this client ID. | |
6675 | * | |
6676 | * Returns NFS4_OK if the FSID is present on this server, | |
6677 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6678 | * NFS4ERR code if some error occurred on the server, or a | |
6679 | * negative errno if a local failure occurred. | |
6680 | */ | |
6681 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6682 | { | |
6683 | struct nfs_server *server = NFS_SERVER(inode); | |
6684 | struct nfs_client *clp = server->nfs_client; | |
6685 | const struct nfs4_mig_recovery_ops *ops = | |
6686 | clp->cl_mvops->mig_recovery_ops; | |
6687 | struct nfs4_exception exception = { }; | |
6688 | int status; | |
6689 | ||
6690 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6691 | (unsigned long long)server->fsid.major, | |
6692 | (unsigned long long)server->fsid.minor, | |
6693 | clp->cl_hostname); | |
6694 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6695 | ||
6696 | do { | |
6697 | status = ops->fsid_present(inode, cred); | |
6698 | if (status != -NFS4ERR_DELAY) | |
6699 | break; | |
6700 | nfs4_handle_exception(server, status, &exception); | |
6701 | } while (exception.retry); | |
6702 | return status; | |
6703 | } | |
6704 | ||
5ec16a85 | 6705 | /** |
a5250def WAA |
6706 | * If 'use_integrity' is true and the state managment nfs_client |
6707 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6708 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6709 | * Considerations sections. Otherwise, just use the user cred with the | |
6710 | * filesystem's rpc_client. | |
5ec16a85 | 6711 | */ |
a5250def | 6712 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6713 | { |
6714 | int status; | |
6715 | struct nfs4_secinfo_arg args = { | |
6716 | .dir_fh = NFS_FH(dir), | |
6717 | .name = name, | |
6718 | }; | |
6719 | struct nfs4_secinfo_res res = { | |
6720 | .flavors = flavors, | |
6721 | }; | |
6722 | struct rpc_message msg = { | |
6723 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6724 | .rpc_argp = &args, | |
6725 | .rpc_resp = &res, | |
6726 | }; | |
a5250def | 6727 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6728 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6729 | |
6730 | if (use_integrity) { | |
6731 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6732 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6733 | msg.rpc_cred = cred; | |
a5250def | 6734 | } |
5a5ea0d4 BS |
6735 | |
6736 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6737 | |
6738 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6739 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6740 | ||
a5250def WAA |
6741 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6742 | &res.seq_res, 0); | |
5a5ea0d4 | 6743 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6744 | |
7cb852df WAA |
6745 | if (cred) |
6746 | put_rpccred(cred); | |
a5250def | 6747 | |
5a5ea0d4 BS |
6748 | return status; |
6749 | } | |
6750 | ||
72de53ec BS |
6751 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6752 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6753 | { |
6754 | struct nfs4_exception exception = { }; | |
6755 | int err; | |
6756 | do { | |
a5250def WAA |
6757 | err = -NFS4ERR_WRONGSEC; |
6758 | ||
6759 | /* try to use integrity protection with machine cred */ | |
6760 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6761 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6762 | ||
6763 | /* | |
6764 | * if unable to use integrity protection, or SECINFO with | |
6765 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
6766 | * disallowed by spec, but exists in deployed servers) use | |
6767 | * the current filesystem's rpc_client and the user cred. | |
6768 | */ | |
6769 | if (err == -NFS4ERR_WRONGSEC) | |
6770 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
6771 | ||
078ea3df TM |
6772 | trace_nfs4_secinfo(dir, name, err); |
6773 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
6774 | &exception); |
6775 | } while (exception.retry); | |
6776 | return err; | |
6777 | } | |
6778 | ||
557134a3 | 6779 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
6780 | /* |
6781 | * Check the exchange flags returned by the server for invalid flags, having | |
6782 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
6783 | * DS flags set. | |
6784 | */ | |
6785 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
6786 | { | |
6787 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
6788 | goto out_inval; | |
6789 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
6790 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
6791 | goto out_inval; | |
6792 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
6793 | goto out_inval; | |
6794 | return NFS_OK; | |
6795 | out_inval: | |
6796 | return -NFS4ERR_INVAL; | |
6797 | } | |
6798 | ||
78fe0f41 | 6799 | static bool |
79d4e1f0 CL |
6800 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
6801 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
6802 | { |
6803 | if (a->server_scope_sz == b->server_scope_sz && | |
6804 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
6805 | return true; | |
6806 | ||
6807 | return false; | |
6808 | } | |
6809 | ||
02a95dee AA |
6810 | static void |
6811 | nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata) | |
6812 | { | |
6813 | } | |
6814 | ||
6815 | static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = { | |
6816 | .rpc_call_done = &nfs4_bind_one_conn_to_session_done, | |
6817 | }; | |
6818 | ||
7c44f1ae | 6819 | /* |
d9ddbf5d | 6820 | * nfs4_proc_bind_one_conn_to_session() |
7c44f1ae WAA |
6821 | * |
6822 | * The 4.1 client currently uses the same TCP connection for the | |
6823 | * fore and backchannel. | |
6824 | */ | |
d9ddbf5d TM |
6825 | static |
6826 | int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt, | |
6827 | struct rpc_xprt *xprt, | |
6828 | struct nfs_client *clp, | |
6829 | struct rpc_cred *cred) | |
7c44f1ae WAA |
6830 | { |
6831 | int status; | |
71a097c6 TM |
6832 | struct nfs41_bind_conn_to_session_args args = { |
6833 | .client = clp, | |
6834 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
6835 | }; | |
7c44f1ae WAA |
6836 | struct nfs41_bind_conn_to_session_res res; |
6837 | struct rpc_message msg = { | |
6838 | .rpc_proc = | |
6839 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 6840 | .rpc_argp = &args, |
7c44f1ae | 6841 | .rpc_resp = &res, |
2cf047c9 | 6842 | .rpc_cred = cred, |
7c44f1ae | 6843 | }; |
d9ddbf5d TM |
6844 | struct rpc_task_setup task_setup_data = { |
6845 | .rpc_client = clnt, | |
6846 | .rpc_xprt = xprt, | |
02a95dee | 6847 | .callback_ops = &nfs4_bind_one_conn_to_session_ops, |
d9ddbf5d TM |
6848 | .rpc_message = &msg, |
6849 | .flags = RPC_TASK_TIMEOUT, | |
6850 | }; | |
6851 | struct rpc_task *task; | |
7c44f1ae WAA |
6852 | |
6853 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 6854 | |
71a097c6 TM |
6855 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
6856 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
6857 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae | 6858 | |
d9ddbf5d TM |
6859 | /* Do not set the backchannel flag unless this is clnt->cl_xprt */ |
6860 | if (xprt != rcu_access_pointer(clnt->cl_xprt)) | |
6861 | args.dir = NFS4_CDFC4_FORE; | |
6862 | ||
6863 | task = rpc_run_task(&task_setup_data); | |
6864 | if (!IS_ERR(task)) { | |
6865 | status = task->tk_status; | |
6866 | rpc_put_task(task); | |
6867 | } else | |
6868 | status = PTR_ERR(task); | |
c6d01c6f | 6869 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 6870 | if (status == 0) { |
71a097c6 | 6871 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
6872 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
6873 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
6874 | status = -EIO; | |
71a097c6 | 6875 | goto out; |
7c44f1ae | 6876 | } |
71a097c6 | 6877 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
6878 | dprintk("NFS: %s: Unexpected direction from server\n", |
6879 | __func__); | |
6880 | status = -EIO; | |
71a097c6 | 6881 | goto out; |
7c44f1ae | 6882 | } |
71a097c6 | 6883 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
6884 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
6885 | __func__); | |
6886 | status = -EIO; | |
71a097c6 | 6887 | goto out; |
7c44f1ae WAA |
6888 | } |
6889 | } | |
7c44f1ae WAA |
6890 | out: |
6891 | dprintk("<-- %s status= %d\n", __func__, status); | |
6892 | return status; | |
6893 | } | |
6894 | ||
d9ddbf5d TM |
6895 | struct rpc_bind_conn_calldata { |
6896 | struct nfs_client *clp; | |
6897 | struct rpc_cred *cred; | |
6898 | }; | |
6899 | ||
6900 | static int | |
6901 | nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt, | |
6902 | struct rpc_xprt *xprt, | |
6903 | void *calldata) | |
6904 | { | |
6905 | struct rpc_bind_conn_calldata *p = calldata; | |
6906 | ||
6907 | return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred); | |
6908 | } | |
6909 | ||
6910 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) | |
6911 | { | |
6912 | struct rpc_bind_conn_calldata data = { | |
6913 | .clp = clp, | |
6914 | .cred = cred, | |
6915 | }; | |
6916 | return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient, | |
6917 | nfs4_proc_bind_conn_to_session_callback, &data); | |
6918 | } | |
6919 | ||
99fe60d0 | 6920 | /* |
fa940720 WAA |
6921 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
6922 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
6923 | */ |
6924 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
6925 | .how = SP4_MACH_CRED, | |
6926 | .enforce.u.words = { | |
6927 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6928 | 1 << (OP_EXCHANGE_ID - 32) | | |
6929 | 1 << (OP_CREATE_SESSION - 32) | | |
6930 | 1 << (OP_DESTROY_SESSION - 32) | | |
6931 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
6932 | }, |
6933 | .allow.u.words = { | |
6934 | [0] = 1 << (OP_CLOSE) | | |
99ade3c7 | 6935 | 1 << (OP_OPEN_DOWNGRADE) | |
a0279625 | 6936 | 1 << (OP_LOCKU) | |
99ade3c7 | 6937 | 1 << (OP_DELEGRETURN) | |
a0279625 | 6938 | 1 << (OP_COMMIT), |
8b5bee2e | 6939 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 | 6940 | 1 << (OP_SECINFO_NO_NAME - 32) | |
99ade3c7 | 6941 | 1 << (OP_LAYOUTRETURN - 32) | |
3787d506 | 6942 | 1 << (OP_TEST_STATEID - 32) | |
a0279625 WAA |
6943 | 1 << (OP_FREE_STATEID - 32) | |
6944 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
6945 | } |
6946 | }; | |
6947 | ||
6948 | /* | |
6949 | * Select the state protection mode for client `clp' given the server results | |
6950 | * from exchange_id in `sp'. | |
99fe60d0 | 6951 | * |
2031cd1a WAA |
6952 | * Returns 0 on success, negative errno otherwise. |
6953 | */ | |
6954 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
6955 | struct nfs41_state_protection *sp) | |
6956 | { | |
6957 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
6958 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
6959 | 1 << (OP_EXCHANGE_ID - 32) | | |
6960 | 1 << (OP_CREATE_SESSION - 32) | | |
6961 | 1 << (OP_DESTROY_SESSION - 32) | | |
6962 | 1 << (OP_DESTROY_CLIENTID - 32) | |
6963 | }; | |
6964 | unsigned int i; | |
6965 | ||
6966 | if (sp->how == SP4_MACH_CRED) { | |
6967 | /* Print state protect result */ | |
6968 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
6969 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
6970 | if (test_bit(i, sp->enforce.u.longs)) | |
6971 | dfprintk(MOUNT, " enforce op %d\n", i); | |
6972 | if (test_bit(i, sp->allow.u.longs)) | |
6973 | dfprintk(MOUNT, " allow op %d\n", i); | |
6974 | } | |
6975 | ||
6976 | /* make sure nothing is on enforce list that isn't supported */ | |
6977 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
6978 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
6979 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
6980 | return -EINVAL; | |
6981 | } | |
6982 | } | |
6983 | ||
6984 | /* | |
6985 | * Minimal mode - state operations are allowed to use machine | |
6986 | * credential. Note this already happens by default, so the | |
6987 | * client doesn't have to do anything more than the negotiation. | |
6988 | * | |
6989 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
6990 | * we're already using the machine cred for exchange_id | |
6991 | * and will never use a different cred. | |
6992 | */ | |
6993 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
6994 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
6995 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
6996 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
6997 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
6998 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
6999 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
7000 | } else { | |
7001 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
7002 | return -EINVAL; | |
7003 | } | |
fa940720 WAA |
7004 | |
7005 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
99ade3c7 AE |
7006 | test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) && |
7007 | test_bit(OP_DELEGRETURN, sp->allow.u.longs) && | |
fa940720 WAA |
7008 | test_bit(OP_LOCKU, sp->allow.u.longs)) { |
7009 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
7010 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
7011 | } | |
8b5bee2e | 7012 | |
99ade3c7 AE |
7013 | if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) { |
7014 | dfprintk(MOUNT, " pnfs cleanup mode enabled\n"); | |
7015 | set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
7016 | &clp->cl_sp4_flags); | |
7017 | } | |
7018 | ||
8b5bee2e WAA |
7019 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && |
7020 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
7021 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
7022 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
7023 | } | |
3787d506 WAA |
7024 | |
7025 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
7026 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
7027 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
7028 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
7029 | } | |
8c21c62c WAA |
7030 | |
7031 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
7032 | dfprintk(MOUNT, " write mode enabled\n"); | |
7033 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
7034 | } | |
7035 | ||
7036 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
7037 | dfprintk(MOUNT, " commit mode enabled\n"); | |
7038 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
7039 | } | |
2031cd1a WAA |
7040 | } |
7041 | ||
7042 | return 0; | |
7043 | } | |
7044 | ||
7045 | /* | |
7046 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 7047 | * |
2031cd1a | 7048 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 7049 | */ |
2031cd1a WAA |
7050 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
7051 | u32 sp4_how) | |
99fe60d0 BH |
7052 | { |
7053 | nfs4_verifier verifier; | |
7054 | struct nfs41_exchange_id_args args = { | |
cd93710e | 7055 | .verifier = &verifier, |
99fe60d0 | 7056 | .client = clp, |
cd3fadec | 7057 | #ifdef CONFIG_NFS_V4_1_MIGRATION |
4f0b429d | 7058 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
cd3fadec CL |
7059 | EXCHGID4_FLAG_BIND_PRINC_STATEID | |
7060 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
7061 | #else | |
7062 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
7063 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
7064 | #endif | |
99fe60d0 BH |
7065 | }; |
7066 | struct nfs41_exchange_id_res res = { | |
32b01310 | 7067 | 0 |
99fe60d0 BH |
7068 | }; |
7069 | int status; | |
7070 | struct rpc_message msg = { | |
7071 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
7072 | .rpc_argp = &args, | |
7073 | .rpc_resp = &res, | |
7074 | .rpc_cred = cred, | |
7075 | }; | |
99fe60d0 | 7076 | |
f092075d | 7077 | nfs4_init_boot_verifier(clp, &verifier); |
873e3851 JL |
7078 | |
7079 | status = nfs4_init_uniform_client_string(clp); | |
7080 | if (status) | |
3a6bb738 | 7081 | goto out; |
3a6bb738 JL |
7082 | |
7083 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 7084 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 7085 | clp->cl_owner_id); |
99fe60d0 | 7086 | |
acdeb69d | 7087 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 7088 | GFP_NOFS); |
acdeb69d | 7089 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
7090 | status = -ENOMEM; |
7091 | goto out; | |
7092 | } | |
78fe0f41 | 7093 | |
79d4e1f0 | 7094 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 7095 | GFP_NOFS); |
177313f1 | 7096 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 7097 | status = -ENOMEM; |
acdeb69d | 7098 | goto out_server_owner; |
abe9a6d5 | 7099 | } |
78fe0f41 | 7100 | |
bbafffd2 | 7101 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 7102 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
7103 | status = -ENOMEM; |
7104 | goto out_server_scope; | |
7105 | } | |
7106 | ||
2031cd1a WAA |
7107 | switch (sp4_how) { |
7108 | case SP4_NONE: | |
7109 | args.state_protect.how = SP4_NONE; | |
7110 | break; | |
7111 | ||
7112 | case SP4_MACH_CRED: | |
7113 | args.state_protect = nfs4_sp4_mach_cred_request; | |
7114 | break; | |
7115 | ||
7116 | default: | |
7117 | /* unsupported! */ | |
7118 | WARN_ON_ONCE(1); | |
7119 | status = -EINVAL; | |
6b55970b | 7120 | goto out_impl_id; |
2031cd1a WAA |
7121 | } |
7122 | ||
1bd714f2 | 7123 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7124 | trace_nfs4_exchange_id(clp, status); |
177313f1 | 7125 | if (status == 0) |
32b01310 | 7126 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 7127 | |
2031cd1a WAA |
7128 | if (status == 0) |
7129 | status = nfs4_sp4_select_mode(clp, &res.state_protect); | |
7130 | ||
acdeb69d | 7131 | if (status == 0) { |
32b01310 | 7132 | clp->cl_clientid = res.clientid; |
e11259f9 TM |
7133 | clp->cl_exchange_flags = res.flags; |
7134 | /* Client ID is not confirmed */ | |
7135 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7136 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7137 | &clp->cl_session->session_state); | |
32b01310 | 7138 | clp->cl_seqid = res.seqid; |
e11259f9 | 7139 | } |
32b01310 | 7140 | |
acdeb69d CL |
7141 | kfree(clp->cl_serverowner); |
7142 | clp->cl_serverowner = res.server_owner; | |
7143 | res.server_owner = NULL; | |
78fe0f41 | 7144 | |
7d2ed9ac | 7145 | /* use the most recent implementation id */ |
59155546 CL |
7146 | kfree(clp->cl_implid); |
7147 | clp->cl_implid = res.impl_id; | |
6b55970b | 7148 | res.impl_id = NULL; |
7d2ed9ac | 7149 | |
177313f1 | 7150 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 7151 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
7152 | res.server_scope)) { |
7153 | dprintk("%s: server_scope mismatch detected\n", | |
7154 | __func__); | |
7155 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
7156 | kfree(clp->cl_serverscope); |
7157 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
7158 | } |
7159 | ||
177313f1 | 7160 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 7161 | clp->cl_serverscope = res.server_scope; |
6b55970b | 7162 | res.server_scope = NULL; |
abe9a6d5 | 7163 | } |
6b55970b | 7164 | } |
7d2ed9ac | 7165 | |
6b55970b KM |
7166 | out_impl_id: |
7167 | kfree(res.impl_id); | |
7d2ed9ac | 7168 | out_server_scope: |
abe9a6d5 | 7169 | kfree(res.server_scope); |
6b55970b KM |
7170 | out_server_owner: |
7171 | kfree(res.server_owner); | |
abe9a6d5 | 7172 | out: |
177313f1 | 7173 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7174 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7175 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7176 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7177 | clp->cl_implid->date.seconds, |
7178 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7179 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
7180 | return status; |
7181 | } | |
7182 | ||
2031cd1a WAA |
7183 | /* |
7184 | * nfs4_proc_exchange_id() | |
7185 | * | |
7186 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7187 | * | |
7188 | * Since the clientid has expired, all compounds using sessions | |
7189 | * associated with the stale clientid will be returning | |
7190 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7191 | * be in some phase of session reset. | |
7192 | * | |
7193 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7194 | */ | |
7195 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7196 | { | |
7197 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7198 | int status; | |
7199 | ||
7200 | /* try SP4_MACH_CRED if krb5i/p */ | |
7201 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7202 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
7203 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); | |
7204 | if (!status) | |
7205 | return 0; | |
7206 | } | |
7207 | ||
7208 | /* try SP4_NONE */ | |
7209 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); | |
7210 | } | |
7211 | ||
66245539 TM |
7212 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7213 | struct rpc_cred *cred) | |
7214 | { | |
7215 | struct rpc_message msg = { | |
7216 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7217 | .rpc_argp = clp, | |
7218 | .rpc_cred = cred, | |
7219 | }; | |
7220 | int status; | |
7221 | ||
7222 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7223 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7224 | if (status) |
02c67525 | 7225 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7226 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7227 | return status; | |
7228 | } | |
7229 | ||
7230 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7231 | struct rpc_cred *cred) | |
7232 | { | |
7233 | unsigned int loop; | |
7234 | int ret; | |
7235 | ||
7236 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7237 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7238 | switch (ret) { | |
7239 | case -NFS4ERR_DELAY: | |
7240 | case -NFS4ERR_CLIENTID_BUSY: | |
7241 | ssleep(1); | |
7242 | break; | |
7243 | default: | |
7244 | return ret; | |
7245 | } | |
7246 | } | |
7247 | return 0; | |
7248 | } | |
7249 | ||
7250 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7251 | { | |
7252 | struct rpc_cred *cred; | |
7253 | int ret = 0; | |
7254 | ||
7255 | if (clp->cl_mvops->minor_version < 1) | |
7256 | goto out; | |
7257 | if (clp->cl_exchange_flags == 0) | |
7258 | goto out; | |
05f4c350 CL |
7259 | if (clp->cl_preserve_clid) |
7260 | goto out; | |
73d8bde5 | 7261 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7262 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7263 | if (cred) | |
7264 | put_rpccred(cred); | |
7265 | switch (ret) { | |
7266 | case 0: | |
7267 | case -NFS4ERR_STALE_CLIENTID: | |
7268 | clp->cl_exchange_flags = 0; | |
7269 | } | |
7270 | out: | |
7271 | return ret; | |
7272 | } | |
7273 | ||
2050f0cc AA |
7274 | struct nfs4_get_lease_time_data { |
7275 | struct nfs4_get_lease_time_args *args; | |
7276 | struct nfs4_get_lease_time_res *res; | |
7277 | struct nfs_client *clp; | |
7278 | }; | |
7279 | ||
7280 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7281 | void *calldata) | |
7282 | { | |
2050f0cc AA |
7283 | struct nfs4_get_lease_time_data *data = |
7284 | (struct nfs4_get_lease_time_data *)calldata; | |
7285 | ||
7286 | dprintk("--> %s\n", __func__); | |
7287 | /* just setup sequence, do not trigger session recovery | |
7288 | since we're invoked within one */ | |
d9afbd1b TM |
7289 | nfs41_setup_sequence(data->clp->cl_session, |
7290 | &data->args->la_seq_args, | |
7291 | &data->res->lr_seq_res, | |
7292 | task); | |
2050f0cc AA |
7293 | dprintk("<-- %s\n", __func__); |
7294 | } | |
7295 | ||
7296 | /* | |
7297 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7298 | * from sequence operation or clientid errors. | |
7299 | */ | |
7300 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7301 | { | |
7302 | struct nfs4_get_lease_time_data *data = | |
7303 | (struct nfs4_get_lease_time_data *)calldata; | |
7304 | ||
7305 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7306 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7307 | return; | |
2050f0cc AA |
7308 | switch (task->tk_status) { |
7309 | case -NFS4ERR_DELAY: | |
7310 | case -NFS4ERR_GRACE: | |
7311 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7312 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7313 | task->tk_status = 0; | |
a8a4ae3a AA |
7314 | /* fall through */ |
7315 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7316 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7317 | return; |
7318 | } | |
2050f0cc AA |
7319 | dprintk("<-- %s\n", __func__); |
7320 | } | |
7321 | ||
17280175 | 7322 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7323 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7324 | .rpc_call_done = nfs4_get_lease_time_done, | |
7325 | }; | |
7326 | ||
7327 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7328 | { | |
7329 | struct rpc_task *task; | |
7330 | struct nfs4_get_lease_time_args args; | |
7331 | struct nfs4_get_lease_time_res res = { | |
7332 | .lr_fsinfo = fsinfo, | |
7333 | }; | |
7334 | struct nfs4_get_lease_time_data data = { | |
7335 | .args = &args, | |
7336 | .res = &res, | |
7337 | .clp = clp, | |
7338 | }; | |
7339 | struct rpc_message msg = { | |
7340 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7341 | .rpc_argp = &args, | |
7342 | .rpc_resp = &res, | |
7343 | }; | |
7344 | struct rpc_task_setup task_setup = { | |
7345 | .rpc_client = clp->cl_rpcclient, | |
7346 | .rpc_message = &msg, | |
7347 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7348 | .callback_data = &data, |
7349 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7350 | }; |
7351 | int status; | |
7352 | ||
a9c92d6b | 7353 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7354 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7355 | dprintk("--> %s\n", __func__); |
7356 | task = rpc_run_task(&task_setup); | |
7357 | ||
7358 | if (IS_ERR(task)) | |
7359 | status = PTR_ERR(task); | |
7360 | else { | |
7361 | status = task->tk_status; | |
7362 | rpc_put_task(task); | |
7363 | } | |
7364 | dprintk("<-- %s return %d\n", __func__, status); | |
7365 | ||
7366 | return status; | |
7367 | } | |
7368 | ||
fc931582 AA |
7369 | /* |
7370 | * Initialize the values to be used by the client in CREATE_SESSION | |
7371 | * If nfs4_init_session set the fore channel request and response sizes, | |
7372 | * use them. | |
7373 | * | |
7374 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7375 | * always set csa_cachethis to FALSE because the current implementation | |
7376 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7377 | */ | |
6b26cc8c CL |
7378 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, |
7379 | struct rpc_clnt *clnt) | |
fc931582 | 7380 | { |
18aad3d5 | 7381 | unsigned int max_rqst_sz, max_resp_sz; |
6b26cc8c | 7382 | unsigned int max_bc_payload = rpc_max_bc_payload(clnt); |
18aad3d5 AA |
7383 | |
7384 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7385 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7386 | |
fc931582 | 7387 | /* Fore channel attributes */ |
18aad3d5 AA |
7388 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7389 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7390 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7391 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7392 | |
7393 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7394 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7395 | __func__, |
7396 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7397 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7398 | |
7399 | /* Back channel attributes */ | |
6b26cc8c CL |
7400 | args->bc_attrs.max_rqst_sz = max_bc_payload; |
7401 | args->bc_attrs.max_resp_sz = max_bc_payload; | |
fc931582 AA |
7402 | args->bc_attrs.max_resp_sz_cached = 0; |
7403 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
f4f58ed1 | 7404 | args->bc_attrs.max_reqs = NFS41_BC_MAX_CALLBACKS; |
fc931582 AA |
7405 | |
7406 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7407 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7408 | __func__, | |
7409 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7410 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7411 | args->bc_attrs.max_reqs); | |
7412 | } | |
7413 | ||
79969dd1 TM |
7414 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7415 | struct nfs41_create_session_res *res) | |
8d35301d | 7416 | { |
43c2e885 | 7417 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7418 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7419 | |
43c2e885 BF |
7420 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7421 | return -EINVAL; | |
7422 | /* | |
7423 | * Our requested max_ops is the minimum we need; we're not | |
7424 | * prepared to break up compounds into smaller pieces than that. | |
7425 | * So, no point even trying to continue if the server won't | |
7426 | * cooperate: | |
7427 | */ | |
7428 | if (rcvd->max_ops < sent->max_ops) | |
7429 | return -EINVAL; | |
7430 | if (rcvd->max_reqs == 0) | |
7431 | return -EINVAL; | |
b4b9a0c1 VG |
7432 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7433 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7434 | return 0; |
8d35301d AA |
7435 | } |
7436 | ||
79969dd1 TM |
7437 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7438 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7439 | { |
7440 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7441 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7442 | |
b1c0df5f TM |
7443 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7444 | goto out; | |
43c2e885 BF |
7445 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7446 | return -EINVAL; | |
7447 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7448 | return -EINVAL; | |
7449 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7450 | return -EINVAL; | |
7451 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 7452 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 7453 | return -EINVAL; |
b4b9a0c1 | 7454 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 | 7455 | return -EINVAL; |
b1c0df5f | 7456 | out: |
43c2e885 BF |
7457 | return 0; |
7458 | } | |
8d35301d | 7459 | |
8d35301d | 7460 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7461 | struct nfs41_create_session_res *res) |
8d35301d | 7462 | { |
43c2e885 | 7463 | int ret; |
8d35301d | 7464 | |
79969dd1 | 7465 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7466 | if (ret) |
7467 | return ret; | |
79969dd1 TM |
7468 | return nfs4_verify_back_channel_attrs(args, res); |
7469 | } | |
7470 | ||
7471 | static void nfs4_update_session(struct nfs4_session *session, | |
7472 | struct nfs41_create_session_res *res) | |
7473 | { | |
7474 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7475 | /* Mark client id and session as being confirmed */ |
7476 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7477 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7478 | session->flags = res->flags; |
7479 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7480 | if (res->flags & SESSION4_BACK_CHAN) |
7481 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7482 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7483 | } |
7484 | ||
848f5bda TM |
7485 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7486 | struct rpc_cred *cred) | |
fc931582 AA |
7487 | { |
7488 | struct nfs4_session *session = clp->cl_session; | |
7489 | struct nfs41_create_session_args args = { | |
7490 | .client = clp, | |
79969dd1 TM |
7491 | .clientid = clp->cl_clientid, |
7492 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7493 | .cb_program = NFS4_CALLBACK, |
7494 | }; | |
79969dd1 TM |
7495 | struct nfs41_create_session_res res; |
7496 | ||
fc931582 AA |
7497 | struct rpc_message msg = { |
7498 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7499 | .rpc_argp = &args, | |
7500 | .rpc_resp = &res, | |
848f5bda | 7501 | .rpc_cred = cred, |
fc931582 AA |
7502 | }; |
7503 | int status; | |
7504 | ||
6b26cc8c | 7505 | nfs4_init_channel_attrs(&args, clp->cl_rpcclient); |
0f91421e | 7506 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7507 | |
1bd714f2 | 7508 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7509 | trace_nfs4_create_session(clp, status); |
fc931582 | 7510 | |
43095d39 | 7511 | if (!status) { |
8d35301d | 7512 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7513 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7514 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7515 | if (clp->cl_seqid == res.seqid) |
7516 | clp->cl_seqid++; | |
7517 | if (status) | |
7518 | goto out; | |
7519 | nfs4_update_session(session, &res); | |
fc931582 | 7520 | } |
79969dd1 | 7521 | out: |
fc931582 AA |
7522 | return status; |
7523 | } | |
7524 | ||
7525 | /* | |
7526 | * Issues a CREATE_SESSION operation to the server. | |
7527 | * It is the responsibility of the caller to verify the session is | |
7528 | * expired before calling this routine. | |
7529 | */ | |
848f5bda | 7530 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7531 | { |
7532 | int status; | |
7533 | unsigned *ptr; | |
fc931582 AA |
7534 | struct nfs4_session *session = clp->cl_session; |
7535 | ||
7536 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7537 | ||
848f5bda | 7538 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7539 | if (status) |
7540 | goto out; | |
7541 | ||
aacd5537 AA |
7542 | /* Init or reset the session slot tables */ |
7543 | status = nfs4_setup_session_slot_tables(session); | |
7544 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7545 | if (status) |
7546 | goto out; | |
7547 | ||
7548 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7549 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7550 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7551 | out: |
7552 | dprintk("<-- %s\n", __func__); | |
7553 | return status; | |
7554 | } | |
7555 | ||
0f3e66c6 AA |
7556 | /* |
7557 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7558 | * The caller must serialize access to this routine. | |
7559 | */ | |
848f5bda TM |
7560 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7561 | struct rpc_cred *cred) | |
0f3e66c6 | 7562 | { |
848f5bda TM |
7563 | struct rpc_message msg = { |
7564 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7565 | .rpc_argp = session, | |
7566 | .rpc_cred = cred, | |
7567 | }; | |
0f3e66c6 | 7568 | int status = 0; |
0f3e66c6 AA |
7569 | |
7570 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7571 | ||
7572 | /* session is still being setup */ | |
e11259f9 TM |
7573 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7574 | return 0; | |
0f3e66c6 | 7575 | |
1bd714f2 | 7576 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7577 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7578 | |
7579 | if (status) | |
08106ac7 | 7580 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7581 | "Session has been destroyed regardless...\n", status); |
7582 | ||
7583 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7584 | return status; | |
7585 | } | |
7586 | ||
fc01cea9 AA |
7587 | /* |
7588 | * Renew the cl_session lease. | |
7589 | */ | |
d5f8d3fe TM |
7590 | struct nfs4_sequence_data { |
7591 | struct nfs_client *clp; | |
7592 | struct nfs4_sequence_args args; | |
7593 | struct nfs4_sequence_res res; | |
7594 | }; | |
7595 | ||
dc96aef9 AB |
7596 | static void nfs41_sequence_release(void *data) |
7597 | { | |
d5f8d3fe TM |
7598 | struct nfs4_sequence_data *calldata = data; |
7599 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7600 | |
7135840f AB |
7601 | if (atomic_read(&clp->cl_count) > 1) |
7602 | nfs4_schedule_state_renewal(clp); | |
7603 | nfs_put_client(clp); | |
d5f8d3fe | 7604 | kfree(calldata); |
dc96aef9 AB |
7605 | } |
7606 | ||
aa5190d0 TM |
7607 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7608 | { | |
7609 | switch(task->tk_status) { | |
7610 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7611 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7612 | return -EAGAIN; | |
7613 | default: | |
0400a6b0 | 7614 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7615 | } |
7616 | return 0; | |
7617 | } | |
7618 | ||
dc96aef9 | 7619 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7620 | { |
d5f8d3fe TM |
7621 | struct nfs4_sequence_data *calldata = data; |
7622 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7623 | |
14516c3a TM |
7624 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7625 | return; | |
fc01cea9 | 7626 | |
c6d01c6f | 7627 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7628 | if (task->tk_status < 0) { |
7629 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7630 | if (atomic_read(&clp->cl_count) == 1) |
7631 | goto out; | |
fc01cea9 | 7632 | |
aa5190d0 TM |
7633 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7634 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7635 | return; |
7636 | } | |
7637 | } | |
fc01cea9 | 7638 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7639 | out: |
fc01cea9 AA |
7640 | dprintk("<-- %s\n", __func__); |
7641 | } | |
7642 | ||
7643 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
7644 | { | |
d5f8d3fe TM |
7645 | struct nfs4_sequence_data *calldata = data; |
7646 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
7647 | struct nfs4_sequence_args *args; |
7648 | struct nfs4_sequence_res *res; | |
7649 | ||
fc01cea9 AA |
7650 | args = task->tk_msg.rpc_argp; |
7651 | res = task->tk_msg.rpc_resp; | |
7652 | ||
d9afbd1b | 7653 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
7654 | } |
7655 | ||
7656 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
7657 | .rpc_call_done = nfs41_sequence_call_done, | |
7658 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 7659 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
7660 | }; |
7661 | ||
8fe72bac TM |
7662 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
7663 | struct rpc_cred *cred, | |
7664 | bool is_privileged) | |
fc01cea9 | 7665 | { |
d5f8d3fe | 7666 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
7667 | struct rpc_message msg = { |
7668 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
7669 | .rpc_cred = cred, | |
7670 | }; | |
71ac6da9 TM |
7671 | struct rpc_task_setup task_setup_data = { |
7672 | .rpc_client = clp->cl_rpcclient, | |
7673 | .rpc_message = &msg, | |
8fe72bac | 7674 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 7675 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 7676 | }; |
fc01cea9 | 7677 | |
7135840f | 7678 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 7679 | return ERR_PTR(-EIO); |
dfb4f309 | 7680 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 7681 | if (calldata == NULL) { |
7135840f | 7682 | nfs_put_client(clp); |
71ac6da9 | 7683 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 7684 | } |
a9c92d6b | 7685 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
7686 | if (is_privileged) |
7687 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
7688 | msg.rpc_argp = &calldata->args; |
7689 | msg.rpc_resp = &calldata->res; | |
7690 | calldata->clp = clp; | |
71ac6da9 | 7691 | task_setup_data.callback_data = calldata; |
fc01cea9 | 7692 | |
71ac6da9 TM |
7693 | return rpc_run_task(&task_setup_data); |
7694 | } | |
7695 | ||
2f60ea6b | 7696 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
7697 | { |
7698 | struct rpc_task *task; | |
7699 | int ret = 0; | |
7700 | ||
2f60ea6b | 7701 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 7702 | return -EAGAIN; |
8fe72bac | 7703 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
7704 | if (IS_ERR(task)) |
7705 | ret = PTR_ERR(task); | |
7706 | else | |
bf294b41 | 7707 | rpc_put_task_async(task); |
71ac6da9 TM |
7708 | dprintk("<-- %s status=%d\n", __func__, ret); |
7709 | return ret; | |
7710 | } | |
7711 | ||
7712 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
7713 | { | |
7714 | struct rpc_task *task; | |
7715 | int ret; | |
7716 | ||
8fe72bac | 7717 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
7718 | if (IS_ERR(task)) { |
7719 | ret = PTR_ERR(task); | |
7720 | goto out; | |
7721 | } | |
7722 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 7723 | if (!ret) |
71ac6da9 TM |
7724 | ret = task->tk_status; |
7725 | rpc_put_task(task); | |
7726 | out: | |
7727 | dprintk("<-- %s status=%d\n", __func__, ret); | |
7728 | return ret; | |
fc01cea9 AA |
7729 | } |
7730 | ||
fce5c838 RL |
7731 | struct nfs4_reclaim_complete_data { |
7732 | struct nfs_client *clp; | |
7733 | struct nfs41_reclaim_complete_args arg; | |
7734 | struct nfs41_reclaim_complete_res res; | |
7735 | }; | |
7736 | ||
7737 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
7738 | { | |
7739 | struct nfs4_reclaim_complete_data *calldata = data; | |
7740 | ||
d9afbd1b TM |
7741 | nfs41_setup_sequence(calldata->clp->cl_session, |
7742 | &calldata->arg.seq_args, | |
7743 | &calldata->res.seq_res, | |
7744 | task); | |
fce5c838 RL |
7745 | } |
7746 | ||
aa5190d0 TM |
7747 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7748 | { | |
7749 | switch(task->tk_status) { | |
7750 | case 0: | |
7751 | case -NFS4ERR_COMPLETE_ALREADY: | |
7752 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
7753 | break; | |
7754 | case -NFS4ERR_DELAY: | |
aa5190d0 | 7755 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
7756 | /* fall through */ |
7757 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
7758 | return -EAGAIN; |
7759 | default: | |
0400a6b0 | 7760 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7761 | } |
7762 | return 0; | |
7763 | } | |
7764 | ||
fce5c838 RL |
7765 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
7766 | { | |
7767 | struct nfs4_reclaim_complete_data *calldata = data; | |
7768 | struct nfs_client *clp = calldata->clp; | |
7769 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
7770 | ||
7771 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7772 | if (!nfs41_sequence_done(task, res)) |
7773 | return; | |
fce5c838 | 7774 | |
c6d01c6f | 7775 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
7776 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
7777 | rpc_restart_call_prepare(task); | |
7778 | return; | |
7779 | } | |
fce5c838 RL |
7780 | dprintk("<-- %s\n", __func__); |
7781 | } | |
7782 | ||
7783 | static void nfs4_free_reclaim_complete_data(void *data) | |
7784 | { | |
7785 | struct nfs4_reclaim_complete_data *calldata = data; | |
7786 | ||
7787 | kfree(calldata); | |
7788 | } | |
7789 | ||
7790 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
7791 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
7792 | .rpc_call_done = nfs4_reclaim_complete_done, | |
7793 | .rpc_release = nfs4_free_reclaim_complete_data, | |
7794 | }; | |
7795 | ||
7796 | /* | |
7797 | * Issue a global reclaim complete. | |
7798 | */ | |
965e9c23 TM |
7799 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
7800 | struct rpc_cred *cred) | |
fce5c838 RL |
7801 | { |
7802 | struct nfs4_reclaim_complete_data *calldata; | |
7803 | struct rpc_task *task; | |
7804 | struct rpc_message msg = { | |
7805 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 7806 | .rpc_cred = cred, |
fce5c838 RL |
7807 | }; |
7808 | struct rpc_task_setup task_setup_data = { | |
7809 | .rpc_client = clp->cl_rpcclient, | |
7810 | .rpc_message = &msg, | |
7811 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
7812 | .flags = RPC_TASK_ASYNC, | |
7813 | }; | |
7814 | int status = -ENOMEM; | |
7815 | ||
7816 | dprintk("--> %s\n", __func__); | |
8535b2be | 7817 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
7818 | if (calldata == NULL) |
7819 | goto out; | |
7820 | calldata->clp = clp; | |
7821 | calldata->arg.one_fs = 0; | |
fce5c838 | 7822 | |
a9c92d6b | 7823 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 7824 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
7825 | msg.rpc_argp = &calldata->arg; |
7826 | msg.rpc_resp = &calldata->res; | |
7827 | task_setup_data.callback_data = calldata; | |
7828 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 7829 | if (IS_ERR(task)) { |
fce5c838 | 7830 | status = PTR_ERR(task); |
acf82b85 DC |
7831 | goto out; |
7832 | } | |
c34c32ea AA |
7833 | status = nfs4_wait_for_completion_rpc_task(task); |
7834 | if (status == 0) | |
7835 | status = task->tk_status; | |
fce5c838 | 7836 | rpc_put_task(task); |
acf82b85 | 7837 | return 0; |
fce5c838 RL |
7838 | out: |
7839 | dprintk("<-- %s status=%d\n", __func__, status); | |
7840 | return status; | |
7841 | } | |
b1f69b75 AA |
7842 | |
7843 | static void | |
7844 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
7845 | { | |
7846 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 7847 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 7848 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
7849 | |
7850 | dprintk("--> %s\n", __func__); | |
183d9e7b JL |
7851 | nfs41_setup_sequence(session, &lgp->args.seq_args, |
7852 | &lgp->res.seq_res, task); | |
7853 | dprintk("<-- %s\n", __func__); | |
b1f69b75 AA |
7854 | } |
7855 | ||
7856 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
7857 | { | |
7858 | struct nfs4_layoutget *lgp = calldata; | |
183d9e7b JL |
7859 | |
7860 | dprintk("--> %s\n", __func__); | |
7861 | nfs41_sequence_done(task, &lgp->res.seq_res); | |
7862 | dprintk("<-- %s\n", __func__); | |
7863 | } | |
7864 | ||
7865 | static int | |
7866 | nfs4_layoutget_handle_exception(struct rpc_task *task, | |
7867 | struct nfs4_layoutget *lgp, struct nfs4_exception *exception) | |
7868 | { | |
ee314c2a TM |
7869 | struct inode *inode = lgp->args.inode; |
7870 | struct nfs_server *server = NFS_SERVER(inode); | |
7871 | struct pnfs_layout_hdr *lo; | |
183d9e7b | 7872 | int status = task->tk_status; |
b1f69b75 | 7873 | |
ed7e5423 | 7874 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 7875 | |
183d9e7b | 7876 | switch (status) { |
b1f69b75 | 7877 | case 0: |
ee314c2a | 7878 | goto out; |
7c1e6e58 PT |
7879 | |
7880 | /* | |
7881 | * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs | |
7882 | * on the file. set tk_status to -ENODATA to tell upper layer to | |
7883 | * retry go inband. | |
7884 | */ | |
7885 | case -NFS4ERR_LAYOUTUNAVAILABLE: | |
183d9e7b | 7886 | status = -ENODATA; |
7c1e6e58 | 7887 | goto out; |
21b874c8 TM |
7888 | /* |
7889 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
7890 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
7891 | */ | |
7892 | case -NFS4ERR_BADLAYOUT: | |
183d9e7b JL |
7893 | status = -EOVERFLOW; |
7894 | goto out; | |
ed7e5423 BH |
7895 | /* |
7896 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
7897 | * (or clients) writing to the same RAID stripe except when |
7898 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
183d9e7b JL |
7899 | * |
7900 | * Treat it like we would RECALLCONFLICT -- we retry for a little | |
7901 | * while, and then eventually give up. | |
ed7e5423 | 7902 | */ |
b1f69b75 | 7903 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b JL |
7904 | if (lgp->args.minlength == 0) { |
7905 | status = -EOVERFLOW; | |
7906 | goto out; | |
ed7e5423 | 7907 | } |
183d9e7b JL |
7908 | /* Fallthrough */ |
7909 | case -NFS4ERR_RECALLCONFLICT: | |
7910 | nfs4_handle_exception(server, -NFS4ERR_RECALLCONFLICT, | |
7911 | exception); | |
7912 | status = -ERECALLCONFLICT; | |
7913 | goto out; | |
ee314c2a TM |
7914 | case -NFS4ERR_EXPIRED: |
7915 | case -NFS4ERR_BAD_STATEID: | |
183d9e7b | 7916 | exception->timeout = 0; |
ee314c2a | 7917 | spin_lock(&inode->i_lock); |
2259f960 TM |
7918 | if (nfs4_stateid_match(&lgp->args.stateid, |
7919 | &lgp->args.ctx->state->stateid)) { | |
ee314c2a TM |
7920 | spin_unlock(&inode->i_lock); |
7921 | /* If the open stateid was bad, then recover it. */ | |
183d9e7b | 7922 | exception->state = lgp->args.ctx->state; |
2259f960 TM |
7923 | break; |
7924 | } | |
7925 | lo = NFS_I(inode)->layout; | |
dd1beb3d TM |
7926 | if (lo && !test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) && |
7927 | nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) { | |
ee314c2a TM |
7928 | LIST_HEAD(head); |
7929 | ||
defb8460 CH |
7930 | /* |
7931 | * Mark the bad layout state as invalid, then retry | |
7932 | * with the current stateid. | |
7933 | */ | |
8714d46d | 7934 | set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); |
6d597e17 | 7935 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL, 0); |
ee314c2a | 7936 | spin_unlock(&inode->i_lock); |
ee314c2a | 7937 | pnfs_free_lseg_list(&head); |
dd1beb3d TM |
7938 | status = -EAGAIN; |
7939 | goto out; | |
2259f960 TM |
7940 | } else |
7941 | spin_unlock(&inode->i_lock); | |
b1f69b75 | 7942 | } |
183d9e7b JL |
7943 | |
7944 | status = nfs4_handle_exception(server, status, exception); | |
7945 | if (exception->retry) | |
7946 | status = -EAGAIN; | |
ee314c2a | 7947 | out: |
b1f69b75 | 7948 | dprintk("<-- %s\n", __func__); |
183d9e7b | 7949 | return status; |
b1f69b75 AA |
7950 | } |
7951 | ||
8554116e IK |
7952 | static size_t max_response_pages(struct nfs_server *server) |
7953 | { | |
7954 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
7955 | return nfs_page_array_len(0, max_resp_sz); | |
7956 | } | |
7957 | ||
7958 | static void nfs4_free_pages(struct page **pages, size_t size) | |
7959 | { | |
7960 | int i; | |
7961 | ||
7962 | if (!pages) | |
7963 | return; | |
7964 | ||
7965 | for (i = 0; i < size; i++) { | |
7966 | if (!pages[i]) | |
7967 | break; | |
7968 | __free_page(pages[i]); | |
7969 | } | |
7970 | kfree(pages); | |
7971 | } | |
7972 | ||
7973 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
7974 | { | |
7975 | struct page **pages; | |
7976 | int i; | |
7977 | ||
7978 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
7979 | if (!pages) { | |
7980 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
7981 | return NULL; | |
7982 | } | |
7983 | ||
7984 | for (i = 0; i < size; i++) { | |
7985 | pages[i] = alloc_page(gfp_flags); | |
7986 | if (!pages[i]) { | |
7987 | dprintk("%s: failed to allocate page\n", __func__); | |
7988 | nfs4_free_pages(pages, size); | |
7989 | return NULL; | |
7990 | } | |
7991 | } | |
7992 | ||
7993 | return pages; | |
7994 | } | |
7995 | ||
b1f69b75 AA |
7996 | static void nfs4_layoutget_release(void *calldata) |
7997 | { | |
7998 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
7999 | struct inode *inode = lgp->args.inode; |
8000 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8001 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8002 | |
8003 | dprintk("--> %s\n", __func__); | |
8554116e | 8004 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 8005 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
8006 | put_nfs_open_context(lgp->args.ctx); |
8007 | kfree(calldata); | |
8008 | dprintk("<-- %s\n", __func__); | |
8009 | } | |
8010 | ||
8011 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
8012 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
8013 | .rpc_call_done = nfs4_layoutget_done, | |
8014 | .rpc_release = nfs4_layoutget_release, | |
8015 | }; | |
8016 | ||
a0b0a6e3 | 8017 | struct pnfs_layout_segment * |
183d9e7b | 8018 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) |
b1f69b75 | 8019 | { |
a47970ff WAA |
8020 | struct inode *inode = lgp->args.inode; |
8021 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8022 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8023 | struct rpc_task *task; |
8024 | struct rpc_message msg = { | |
8025 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
8026 | .rpc_argp = &lgp->args, | |
8027 | .rpc_resp = &lgp->res, | |
6ab59344 | 8028 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
8029 | }; |
8030 | struct rpc_task_setup task_setup_data = { | |
8031 | .rpc_client = server->client, | |
8032 | .rpc_message = &msg, | |
8033 | .callback_ops = &nfs4_layoutget_call_ops, | |
8034 | .callback_data = lgp, | |
8035 | .flags = RPC_TASK_ASYNC, | |
8036 | }; | |
a0b0a6e3 | 8037 | struct pnfs_layout_segment *lseg = NULL; |
bc23676c TM |
8038 | struct nfs4_exception exception = { |
8039 | .inode = inode, | |
8040 | .timeout = *timeout, | |
8041 | }; | |
b1f69b75 AA |
8042 | int status = 0; |
8043 | ||
8044 | dprintk("--> %s\n", __func__); | |
8045 | ||
4bd5a980 PT |
8046 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
8047 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
8048 | ||
8554116e IK |
8049 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
8050 | if (!lgp->args.layout.pages) { | |
8051 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 8052 | return ERR_PTR(-ENOMEM); |
8554116e IK |
8053 | } |
8054 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
8055 | ||
35124a09 | 8056 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 8057 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 8058 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 8059 | |
b1f69b75 AA |
8060 | task = rpc_run_task(&task_setup_data); |
8061 | if (IS_ERR(task)) | |
a0b0a6e3 | 8062 | return ERR_CAST(task); |
b1f69b75 | 8063 | status = nfs4_wait_for_completion_rpc_task(task); |
183d9e7b JL |
8064 | if (status == 0) { |
8065 | status = nfs4_layoutget_handle_exception(task, lgp, &exception); | |
8066 | *timeout = exception.timeout; | |
8067 | } | |
8068 | ||
1037e6ea TM |
8069 | trace_nfs4_layoutget(lgp->args.ctx, |
8070 | &lgp->args.range, | |
8071 | &lgp->res.range, | |
48c9579a | 8072 | &lgp->res.stateid, |
1037e6ea | 8073 | status); |
183d9e7b | 8074 | |
085b7a45 WAA |
8075 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
8076 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 8077 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
8078 | rpc_put_task(task); |
8079 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
8080 | if (status) |
8081 | return ERR_PTR(status); | |
8082 | return lseg; | |
b1f69b75 AA |
8083 | } |
8084 | ||
cbe82603 BH |
8085 | static void |
8086 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
8087 | { | |
8088 | struct nfs4_layoutreturn *lrp = calldata; | |
8089 | ||
8090 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
8091 | nfs41_setup_sequence(lrp->clp->cl_session, |
8092 | &lrp->args.seq_args, | |
8093 | &lrp->res.seq_res, | |
8094 | task); | |
cbe82603 BH |
8095 | } |
8096 | ||
8097 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
8098 | { | |
8099 | struct nfs4_layoutreturn *lrp = calldata; | |
8100 | struct nfs_server *server; | |
8101 | ||
8102 | dprintk("--> %s\n", __func__); | |
8103 | ||
6ba7db34 | 8104 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
8105 | return; |
8106 | ||
8107 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
8108 | switch (task->tk_status) { |
8109 | default: | |
8110 | task->tk_status = 0; | |
8111 | case 0: | |
8112 | break; | |
8113 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8114 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8115 | break; |
d00c5d43 | 8116 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8117 | return; |
8118 | } | |
cbe82603 BH |
8119 | dprintk("<-- %s\n", __func__); |
8120 | } | |
8121 | ||
8122 | static void nfs4_layoutreturn_release(void *calldata) | |
8123 | { | |
8124 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8125 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8126 | LIST_HEAD(freeme); |
cbe82603 BH |
8127 | |
8128 | dprintk("--> %s\n", __func__); | |
849b286f | 8129 | spin_lock(&lo->plh_inode->i_lock); |
6d597e17 JL |
8130 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range, |
8131 | be32_to_cpu(lrp->args.stateid.seqid)); | |
0654cc72 | 8132 | pnfs_mark_layout_returned_if_empty(lo); |
849b286f TM |
8133 | if (lrp->res.lrs_present) |
8134 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
d67ae825 | 8135 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f | 8136 | spin_unlock(&lo->plh_inode->i_lock); |
c5d73716 | 8137 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8138 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8139 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8140 | kfree(calldata); |
8141 | dprintk("<-- %s\n", __func__); | |
8142 | } | |
8143 | ||
8144 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8145 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8146 | .rpc_call_done = nfs4_layoutreturn_done, | |
8147 | .rpc_release = nfs4_layoutreturn_release, | |
8148 | }; | |
8149 | ||
6c16605d | 8150 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8151 | { |
8152 | struct rpc_task *task; | |
8153 | struct rpc_message msg = { | |
8154 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8155 | .rpc_argp = &lrp->args, | |
8156 | .rpc_resp = &lrp->res, | |
9556000d | 8157 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8158 | }; |
8159 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8160 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8161 | .rpc_message = &msg, |
8162 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8163 | .callback_data = lrp, | |
8164 | }; | |
6c16605d | 8165 | int status = 0; |
cbe82603 | 8166 | |
99ade3c7 AE |
8167 | nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client, |
8168 | NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
8169 | &task_setup_data.rpc_client, &msg); | |
8170 | ||
cbe82603 | 8171 | dprintk("--> %s\n", __func__); |
5a0ec8ac TM |
8172 | if (!sync) { |
8173 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8174 | if (!lrp->inode) { | |
8175 | nfs4_layoutreturn_release(lrp); | |
8176 | return -EAGAIN; | |
8177 | } | |
8178 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8179 | } | |
a9c92d6b | 8180 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8181 | task = rpc_run_task(&task_setup_data); |
8182 | if (IS_ERR(task)) | |
8183 | return PTR_ERR(task); | |
5a0ec8ac TM |
8184 | if (sync) |
8185 | status = task->tk_status; | |
48c9579a | 8186 | trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status); |
cbe82603 BH |
8187 | dprintk("<-- %s status=%d\n", __func__, status); |
8188 | rpc_put_task(task); | |
8189 | return status; | |
8190 | } | |
8191 | ||
b1f69b75 | 8192 | static int |
cd5875fe TM |
8193 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8194 | struct pnfs_device *pdev, | |
8195 | struct rpc_cred *cred) | |
b1f69b75 AA |
8196 | { |
8197 | struct nfs4_getdeviceinfo_args args = { | |
8198 | .pdev = pdev, | |
4e590803 TM |
8199 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8200 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8201 | }; |
8202 | struct nfs4_getdeviceinfo_res res = { | |
8203 | .pdev = pdev, | |
8204 | }; | |
8205 | struct rpc_message msg = { | |
8206 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8207 | .rpc_argp = &args, | |
8208 | .rpc_resp = &res, | |
cd5875fe | 8209 | .rpc_cred = cred, |
b1f69b75 AA |
8210 | }; |
8211 | int status; | |
8212 | ||
8213 | dprintk("--> %s\n", __func__); | |
7c513058 | 8214 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8215 | if (res.notification & ~args.notify_types) |
8216 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8217 | if (res.notification != args.notify_types) |
8218 | pdev->nocache = 1; | |
4e590803 | 8219 | |
b1f69b75 AA |
8220 | dprintk("<-- %s status=%d\n", __func__, status); |
8221 | ||
8222 | return status; | |
8223 | } | |
8224 | ||
cd5875fe TM |
8225 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8226 | struct pnfs_device *pdev, | |
8227 | struct rpc_cred *cred) | |
b1f69b75 AA |
8228 | { |
8229 | struct nfs4_exception exception = { }; | |
8230 | int err; | |
8231 | ||
8232 | do { | |
8233 | err = nfs4_handle_exception(server, | |
cd5875fe | 8234 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8235 | &exception); |
8236 | } while (exception.retry); | |
8237 | return err; | |
8238 | } | |
8239 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8240 | ||
863a3c6c AA |
8241 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8242 | { | |
8243 | struct nfs4_layoutcommit_data *data = calldata; | |
8244 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8245 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8246 | |
d9afbd1b TM |
8247 | nfs41_setup_sequence(session, |
8248 | &data->args.seq_args, | |
8249 | &data->res.seq_res, | |
8250 | task); | |
863a3c6c AA |
8251 | } |
8252 | ||
8253 | static void | |
8254 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8255 | { | |
8256 | struct nfs4_layoutcommit_data *data = calldata; | |
8257 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8258 | ||
6ba7db34 | 8259 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8260 | return; |
8261 | ||
8262 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8263 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8264 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8265 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8266 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8267 | task->tk_status = 0; |
e59d27e0 | 8268 | case 0: |
e59d27e0 TM |
8269 | break; |
8270 | default: | |
8478eaa1 | 8271 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8272 | rpc_restart_call_prepare(task); |
8273 | return; | |
8274 | } | |
8275 | } | |
863a3c6c AA |
8276 | } |
8277 | ||
8278 | static void nfs4_layoutcommit_release(void *calldata) | |
8279 | { | |
8280 | struct nfs4_layoutcommit_data *data = calldata; | |
8281 | ||
db29c089 | 8282 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8283 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8284 | data->res.fattr); | |
863a3c6c | 8285 | put_rpccred(data->cred); |
472e2594 | 8286 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8287 | kfree(data); |
8288 | } | |
8289 | ||
8290 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8291 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8292 | .rpc_call_done = nfs4_layoutcommit_done, | |
8293 | .rpc_release = nfs4_layoutcommit_release, | |
8294 | }; | |
8295 | ||
8296 | int | |
ef311537 | 8297 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8298 | { |
8299 | struct rpc_message msg = { | |
8300 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8301 | .rpc_argp = &data->args, | |
8302 | .rpc_resp = &data->res, | |
8303 | .rpc_cred = data->cred, | |
8304 | }; | |
8305 | struct rpc_task_setup task_setup_data = { | |
8306 | .task = &data->task, | |
8307 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8308 | .rpc_message = &msg, | |
8309 | .callback_ops = &nfs4_layoutcommit_ops, | |
8310 | .callback_data = data, | |
863a3c6c AA |
8311 | }; |
8312 | struct rpc_task *task; | |
8313 | int status = 0; | |
8314 | ||
b4839ebe KM |
8315 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8316 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8317 | data->args.lastbytewritten, |
8318 | data->args.inode->i_ino); | |
8319 | ||
472e2594 TM |
8320 | if (!sync) { |
8321 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8322 | if (data->inode == NULL) { | |
8323 | nfs4_layoutcommit_release(data); | |
8324 | return -EAGAIN; | |
8325 | } | |
8326 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8327 | } | |
a9c92d6b | 8328 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8329 | task = rpc_run_task(&task_setup_data); |
8330 | if (IS_ERR(task)) | |
8331 | return PTR_ERR(task); | |
472e2594 TM |
8332 | if (sync) |
8333 | status = task->tk_status; | |
48c9579a | 8334 | trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status); |
863a3c6c AA |
8335 | dprintk("%s: status %d\n", __func__, status); |
8336 | rpc_put_task(task); | |
8337 | return status; | |
8338 | } | |
fca78d6d | 8339 | |
97431204 AA |
8340 | /** |
8341 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8342 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8343 | */ | |
fca78d6d BS |
8344 | static int |
8345 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8346 | struct nfs_fsinfo *info, |
8347 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8348 | { |
8349 | struct nfs41_secinfo_no_name_args args = { | |
8350 | .style = SECINFO_STYLE_CURRENT_FH, | |
8351 | }; | |
8352 | struct nfs4_secinfo_res res = { | |
8353 | .flavors = flavors, | |
8354 | }; | |
8355 | struct rpc_message msg = { | |
8356 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8357 | .rpc_argp = &args, | |
8358 | .rpc_resp = &res, | |
8359 | }; | |
b1b3e136 | 8360 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8361 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8362 | int status; |
8363 | ||
8364 | if (use_integrity) { | |
8365 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8366 | cred = nfs4_get_clid_cred(server->nfs_client); |
8367 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8368 | } |
8369 | ||
8370 | dprintk("--> %s\n", __func__); | |
8371 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8372 | &res.seq_res, 0); | |
8373 | dprintk("<-- %s status=%d\n", __func__, status); | |
8374 | ||
7cb852df WAA |
8375 | if (cred) |
8376 | put_rpccred(cred); | |
b1b3e136 WAA |
8377 | |
8378 | return status; | |
fca78d6d BS |
8379 | } |
8380 | ||
8381 | static int | |
8382 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8383 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8384 | { | |
8385 | struct nfs4_exception exception = { }; | |
8386 | int err; | |
8387 | do { | |
b1b3e136 WAA |
8388 | /* first try using integrity protection */ |
8389 | err = -NFS4ERR_WRONGSEC; | |
8390 | ||
8391 | /* try to use integrity protection with machine cred */ | |
8392 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8393 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8394 | flavors, true); | |
8395 | ||
8396 | /* | |
8397 | * if unable to use integrity protection, or SECINFO with | |
8398 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8399 | * disallowed by spec, but exists in deployed servers) use | |
8400 | * the current filesystem's rpc_client and the user cred. | |
8401 | */ | |
8402 | if (err == -NFS4ERR_WRONGSEC) | |
8403 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8404 | flavors, false); | |
8405 | ||
fca78d6d BS |
8406 | switch (err) { |
8407 | case 0: | |
8408 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8409 | case -ENOTSUPP: |
05e9cfb4 | 8410 | goto out; |
fca78d6d BS |
8411 | default: |
8412 | err = nfs4_handle_exception(server, err, &exception); | |
8413 | } | |
8414 | } while (exception.retry); | |
05e9cfb4 | 8415 | out: |
fca78d6d BS |
8416 | return err; |
8417 | } | |
8418 | ||
8419 | static int | |
8420 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8421 | struct nfs_fsinfo *info) | |
8422 | { | |
8423 | int err; | |
8424 | struct page *page; | |
367156d9 | 8425 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8426 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8427 | struct nfs4_secinfo4 *secinfo; |
8428 | int i; | |
fca78d6d BS |
8429 | |
8430 | page = alloc_page(GFP_KERNEL); | |
8431 | if (!page) { | |
8432 | err = -ENOMEM; | |
8433 | goto out; | |
8434 | } | |
8435 | ||
8436 | flavors = page_address(page); | |
8437 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8438 | ||
8439 | /* | |
8440 | * Fall back on "guess and check" method if | |
8441 | * the server doesn't support SECINFO_NO_NAME | |
8442 | */ | |
78b19bae | 8443 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8444 | err = nfs4_find_root_sec(server, fhandle, info); |
8445 | goto out_freepage; | |
8446 | } | |
8447 | if (err) | |
8448 | goto out_freepage; | |
8449 | ||
58a8cf12 WAA |
8450 | for (i = 0; i < flavors->num_flavors; i++) { |
8451 | secinfo = &flavors->flavors[i]; | |
8452 | ||
8453 | switch (secinfo->flavor) { | |
8454 | case RPC_AUTH_NULL: | |
8455 | case RPC_AUTH_UNIX: | |
8456 | case RPC_AUTH_GSS: | |
8457 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8458 | &secinfo->flavor_info); | |
8459 | break; | |
8460 | default: | |
8461 | flavor = RPC_AUTH_MAXFLAVOR; | |
8462 | break; | |
8463 | } | |
8464 | ||
4d4b69dd WAA |
8465 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8466 | flavor = RPC_AUTH_MAXFLAVOR; | |
8467 | ||
58a8cf12 WAA |
8468 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8469 | err = nfs4_lookup_root_sec(server, fhandle, | |
8470 | info, flavor); | |
8471 | if (!err) | |
8472 | break; | |
8473 | } | |
8474 | } | |
8475 | ||
8476 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8477 | err = -EPERM; | |
fca78d6d BS |
8478 | |
8479 | out_freepage: | |
8480 | put_page(page); | |
8481 | if (err == -EACCES) | |
8482 | return -EPERM; | |
8483 | out: | |
8484 | return err; | |
8485 | } | |
1cab0652 | 8486 | |
ab7cb0df TM |
8487 | static int _nfs41_test_stateid(struct nfs_server *server, |
8488 | nfs4_stateid *stateid, | |
8489 | struct rpc_cred *cred) | |
7d974794 BS |
8490 | { |
8491 | int status; | |
8492 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8493 | .stateid = stateid, |
7d974794 BS |
8494 | }; |
8495 | struct nfs41_test_stateid_res res; | |
8496 | struct rpc_message msg = { | |
8497 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8498 | .rpc_argp = &args, | |
8499 | .rpc_resp = &res, | |
ab7cb0df | 8500 | .rpc_cred = cred, |
7d974794 | 8501 | }; |
3787d506 WAA |
8502 | struct rpc_clnt *rpc_client = server->client; |
8503 | ||
8504 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8505 | &rpc_client, &msg); | |
1cab0652 | 8506 | |
38527b15 | 8507 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8508 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8509 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8510 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8511 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8512 | if (status != NFS_OK) { |
8513 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8514 | return status; |
38527b15 CL |
8515 | } |
8516 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8517 | return -res.status; |
7d974794 BS |
8518 | } |
8519 | ||
38527b15 CL |
8520 | /** |
8521 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8522 | * | |
8523 | * @server: server / transport on which to perform the operation | |
8524 | * @stateid: state ID to test | |
ab7cb0df | 8525 | * @cred: credential |
38527b15 CL |
8526 | * |
8527 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8528 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8529 | * failed or the state ID is not currently valid. | |
8530 | */ | |
ab7cb0df TM |
8531 | static int nfs41_test_stateid(struct nfs_server *server, |
8532 | nfs4_stateid *stateid, | |
8533 | struct rpc_cred *cred) | |
7d974794 BS |
8534 | { |
8535 | struct nfs4_exception exception = { }; | |
8536 | int err; | |
8537 | do { | |
ab7cb0df | 8538 | err = _nfs41_test_stateid(server, stateid, cred); |
377e507d CL |
8539 | if (err != -NFS4ERR_DELAY) |
8540 | break; | |
8541 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
8542 | } while (exception.retry); |
8543 | return err; | |
8544 | } | |
9aeda35f | 8545 | |
7c1d5fae TM |
8546 | struct nfs_free_stateid_data { |
8547 | struct nfs_server *server; | |
8548 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8549 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8550 | }; |
8551 | ||
8552 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8553 | { | |
8554 | struct nfs_free_stateid_data *data = calldata; | |
8555 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8556 | &data->args.seq_args, | |
8557 | &data->res.seq_res, | |
8558 | task); | |
8559 | } | |
8560 | ||
8561 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8562 | { | |
8563 | struct nfs_free_stateid_data *data = calldata; | |
8564 | ||
8565 | nfs41_sequence_done(task, &data->res.seq_res); | |
8566 | ||
8567 | switch (task->tk_status) { | |
8568 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8569 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8570 | rpc_restart_call_prepare(task); |
8571 | } | |
8572 | } | |
8573 | ||
8574 | static void nfs41_free_stateid_release(void *calldata) | |
8575 | { | |
8576 | kfree(calldata); | |
8577 | } | |
8578 | ||
17f26b12 | 8579 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8580 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8581 | .rpc_call_done = nfs41_free_stateid_done, | |
8582 | .rpc_release = nfs41_free_stateid_release, | |
8583 | }; | |
8584 | ||
8585 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
8586 | nfs4_stateid *stateid, | |
ab7cb0df | 8587 | struct rpc_cred *cred, |
7c1d5fae TM |
8588 | bool privileged) |
8589 | { | |
9aeda35f BS |
8590 | struct rpc_message msg = { |
8591 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8592 | .rpc_cred = cred, |
9aeda35f | 8593 | }; |
7c1d5fae TM |
8594 | struct rpc_task_setup task_setup = { |
8595 | .rpc_client = server->client, | |
8596 | .rpc_message = &msg, | |
8597 | .callback_ops = &nfs41_free_stateid_ops, | |
8598 | .flags = RPC_TASK_ASYNC, | |
8599 | }; | |
8600 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8601 | |
3787d506 WAA |
8602 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8603 | &task_setup.rpc_client, &msg); | |
8604 | ||
38527b15 | 8605 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8606 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8607 | if (!data) | |
8608 | return ERR_PTR(-ENOMEM); | |
8609 | data->server = server; | |
8610 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8611 | ||
8612 | task_setup.callback_data = data; | |
8613 | ||
8614 | msg.rpc_argp = &data->args; | |
8615 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8616 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8617 | if (privileged) |
8618 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8619 | ||
8620 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8621 | } |
8622 | ||
38527b15 CL |
8623 | /** |
8624 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
8625 | * | |
8626 | * @server: server / transport on which to perform the operation | |
8627 | * @stateid: state ID to release | |
ab7cb0df | 8628 | * @cred: credential |
38527b15 CL |
8629 | * |
8630 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
8631 | * negative NFS4ERR value is returned. | |
8632 | */ | |
ab7cb0df TM |
8633 | static int nfs41_free_stateid(struct nfs_server *server, |
8634 | nfs4_stateid *stateid, | |
8635 | struct rpc_cred *cred) | |
9aeda35f | 8636 | { |
7c1d5fae TM |
8637 | struct rpc_task *task; |
8638 | int ret; | |
8639 | ||
ab7cb0df | 8640 | task = _nfs41_free_stateid(server, stateid, cred, true); |
7c1d5fae TM |
8641 | if (IS_ERR(task)) |
8642 | return PTR_ERR(task); | |
8643 | ret = rpc_wait_for_completion_task(task); | |
8644 | if (!ret) | |
8645 | ret = task->tk_status; | |
8646 | rpc_put_task(task); | |
8647 | return ret; | |
9aeda35f | 8648 | } |
36281caa | 8649 | |
f1cdae87 JL |
8650 | static void |
8651 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf TM |
8652 | { |
8653 | struct rpc_task *task; | |
ab7cb0df | 8654 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 8655 | |
ab7cb0df | 8656 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf TM |
8657 | nfs4_free_lock_state(server, lsp); |
8658 | if (IS_ERR(task)) | |
f1cdae87 | 8659 | return; |
c8b2d0bf | 8660 | rpc_put_task(task); |
c8b2d0bf TM |
8661 | } |
8662 | ||
36281caa TM |
8663 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
8664 | const nfs4_stateid *s2) | |
8665 | { | |
93b717fd TM |
8666 | if (s1->type != s2->type) |
8667 | return false; | |
8668 | ||
2d2f24ad | 8669 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
8670 | return false; |
8671 | ||
2d2f24ad | 8672 | if (s1->seqid == s2->seqid) |
36281caa | 8673 | return true; |
2d2f24ad | 8674 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
8675 | return true; |
8676 | ||
8677 | return false; | |
8678 | } | |
8679 | ||
557134a3 AA |
8680 | #endif /* CONFIG_NFS_V4_1 */ |
8681 | ||
36281caa TM |
8682 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
8683 | const nfs4_stateid *s2) | |
8684 | { | |
f597c537 | 8685 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
8686 | } |
8687 | ||
8688 | ||
17280175 | 8689 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 8690 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 8691 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
8692 | .recover_open = nfs4_open_reclaim, |
8693 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 8694 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 8695 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
8696 | }; |
8697 | ||
591d71cb | 8698 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 8699 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
8700 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
8701 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
8702 | .recover_open = nfs4_open_reclaim, | |
8703 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 8704 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 8705 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 8706 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
8707 | }; |
8708 | #endif /* CONFIG_NFS_V4_1 */ | |
8709 | ||
17280175 | 8710 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
8711 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
8712 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 8713 | .recover_open = nfs40_open_expired, |
591d71cb AA |
8714 | .recover_lock = nfs4_lock_expired, |
8715 | .establish_clid = nfs4_init_clientid, | |
8716 | }; | |
8717 | ||
8718 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8719 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 8720 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 8721 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
8722 | .recover_open = nfs41_open_expired, |
8723 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 8724 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 8725 | }; |
591d71cb | 8726 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 8727 | |
17280175 | 8728 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 8729 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 8730 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 8731 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
8732 | }; |
8733 | ||
8734 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 8735 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 8736 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 8737 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 8738 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
8739 | }; |
8740 | #endif | |
8741 | ||
ec011fe8 | 8742 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 8743 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 8744 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
8745 | }; |
8746 | ||
8747 | #if defined(CONFIG_NFS_V4_1) | |
8748 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 8749 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 8750 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
8751 | }; |
8752 | #endif /* CONFIG_NFS_V4_1 */ | |
8753 | ||
97dc1359 TM |
8754 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
8755 | .minor_version = 0, | |
39c6daae TM |
8756 | .init_caps = NFS_CAP_READDIRPLUS |
8757 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 8758 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
8759 | .init_client = nfs40_init_client, |
8760 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 8761 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 8762 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 8763 | .free_lock_state = nfs4_release_lockowner, |
63f5f796 | 8764 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 8765 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
8766 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
8767 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
8768 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 8769 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
8770 | }; |
8771 | ||
8772 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
8773 | static struct nfs_seqid * |
8774 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
8775 | { | |
8776 | return NULL; | |
8777 | } | |
8778 | ||
97dc1359 TM |
8779 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
8780 | .minor_version = 1, | |
39c6daae TM |
8781 | .init_caps = NFS_CAP_READDIRPLUS |
8782 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 8783 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 8784 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 8785 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
8786 | .init_client = nfs41_init_client, |
8787 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 8788 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 8789 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 8790 | .free_lock_state = nfs41_free_lock_state, |
63f5f796 | 8791 | .alloc_seqid = nfs_alloc_no_seqid, |
9915ea7e | 8792 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
8793 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8794 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8795 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 8796 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
8797 | }; |
8798 | #endif | |
8799 | ||
42c2c424 SD |
8800 | #if defined(CONFIG_NFS_V4_2) |
8801 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
8802 | .minor_version = 2, | |
7017310a BS |
8803 | .init_caps = NFS_CAP_READDIRPLUS |
8804 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
8805 | | NFS_CAP_POSIX_LOCK |
8806 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 8807 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 8808 | | NFS_CAP_ALLOCATE |
2e72448b | 8809 | | NFS_CAP_COPY |
624bd5b7 | 8810 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 8811 | | NFS_CAP_SEEK |
e5341f3a PT |
8812 | | NFS_CAP_LAYOUTSTATS |
8813 | | NFS_CAP_CLONE, | |
abf79bb3 CL |
8814 | .init_client = nfs41_init_client, |
8815 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
8816 | .match_stateid = nfs41_match_stateid, |
8817 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 8818 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 8819 | .call_sync_ops = &nfs41_call_sync_ops, |
63f5f796 | 8820 | .alloc_seqid = nfs_alloc_no_seqid, |
42c2c424 SD |
8821 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
8822 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
8823 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 8824 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
8825 | }; |
8826 | #endif | |
8827 | ||
97dc1359 TM |
8828 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
8829 | [0] = &nfs_v4_0_minor_ops, | |
8830 | #if defined(CONFIG_NFS_V4_1) | |
8831 | [1] = &nfs_v4_1_minor_ops, | |
8832 | #endif | |
42c2c424 SD |
8833 | #if defined(CONFIG_NFS_V4_2) |
8834 | [2] = &nfs_v4_2_minor_ops, | |
8835 | #endif | |
97dc1359 TM |
8836 | }; |
8837 | ||
c4803c49 AG |
8838 | ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) |
8839 | { | |
8840 | ssize_t error, error2; | |
8841 | ||
8842 | error = generic_listxattr(dentry, list, size); | |
8843 | if (error < 0) | |
8844 | return error; | |
8845 | if (list) { | |
8846 | list += error; | |
8847 | size -= error; | |
8848 | } | |
8849 | ||
8850 | error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size); | |
8851 | if (error2 < 0) | |
8852 | return error2; | |
8853 | return error + error2; | |
8854 | } | |
8855 | ||
17f26b12 | 8856 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
8857 | .create = nfs_create, |
8858 | .lookup = nfs_lookup, | |
8859 | .atomic_open = nfs_atomic_open, | |
8860 | .link = nfs_link, | |
8861 | .unlink = nfs_unlink, | |
8862 | .symlink = nfs_symlink, | |
8863 | .mkdir = nfs_mkdir, | |
8864 | .rmdir = nfs_rmdir, | |
8865 | .mknod = nfs_mknod, | |
8866 | .rename = nfs_rename, | |
8867 | .permission = nfs_permission, | |
8868 | .getattr = nfs_getattr, | |
8869 | .setattr = nfs_setattr, | |
8870 | .getxattr = generic_getxattr, | |
8871 | .setxattr = generic_setxattr, | |
c4803c49 | 8872 | .listxattr = nfs4_listxattr, |
73a79706 BS |
8873 | .removexattr = generic_removexattr, |
8874 | }; | |
8875 | ||
92e1d5be | 8876 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
8877 | .permission = nfs_permission, |
8878 | .getattr = nfs_getattr, | |
8879 | .setattr = nfs_setattr, | |
64c2ce8b AK |
8880 | .getxattr = generic_getxattr, |
8881 | .setxattr = generic_setxattr, | |
c4803c49 | 8882 | .listxattr = nfs4_listxattr, |
64c2ce8b | 8883 | .removexattr = generic_removexattr, |
6b3b5496 BF |
8884 | }; |
8885 | ||
509de811 | 8886 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
8887 | .version = 4, /* protocol version */ |
8888 | .dentry_ops = &nfs4_dentry_operations, | |
8889 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 8890 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 8891 | .file_ops = &nfs4_file_operations, |
1da177e4 | 8892 | .getroot = nfs4_proc_get_root, |
281cad46 | 8893 | .submount = nfs4_submount, |
ff9099f2 | 8894 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
8895 | .getattr = nfs4_proc_getattr, |
8896 | .setattr = nfs4_proc_setattr, | |
8897 | .lookup = nfs4_proc_lookup, | |
8898 | .access = nfs4_proc_access, | |
8899 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
8900 | .create = nfs4_proc_create, |
8901 | .remove = nfs4_proc_remove, | |
8902 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 8903 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 8904 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 8905 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 8906 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 8907 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
8908 | .link = nfs4_proc_link, |
8909 | .symlink = nfs4_proc_symlink, | |
8910 | .mkdir = nfs4_proc_mkdir, | |
8911 | .rmdir = nfs4_proc_remove, | |
8912 | .readdir = nfs4_proc_readdir, | |
8913 | .mknod = nfs4_proc_mknod, | |
8914 | .statfs = nfs4_proc_statfs, | |
8915 | .fsinfo = nfs4_proc_fsinfo, | |
8916 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 8917 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 8918 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 8919 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 8920 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 8921 | .read_done = nfs4_read_done, |
1da177e4 | 8922 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 8923 | .write_done = nfs4_write_done, |
1da177e4 | 8924 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 8925 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 8926 | .commit_done = nfs4_commit_done, |
1da177e4 | 8927 | .lock = nfs4_proc_lock, |
e50a1c2e | 8928 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 8929 | .close_context = nfs4_close_context, |
2b484297 | 8930 | .open_context = nfs4_atomic_open, |
011e2a7f | 8931 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 8932 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 8933 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 8934 | .init_client = nfs4_init_client, |
cdb7eced | 8935 | .free_client = nfs4_free_client, |
1179acc6 BS |
8936 | .create_server = nfs4_create_server, |
8937 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
8938 | }; |
8939 | ||
64c2ce8b | 8940 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
98e9cb57 | 8941 | .name = XATTR_NAME_NFSV4_ACL, |
64c2ce8b AK |
8942 | .list = nfs4_xattr_list_nfs4_acl, |
8943 | .get = nfs4_xattr_get_nfs4_acl, | |
8944 | .set = nfs4_xattr_set_nfs4_acl, | |
8945 | }; | |
8946 | ||
8947 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
8948 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
8949 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
8950 | &nfs4_xattr_nfs4_label_handler, | |
8951 | #endif | |
64c2ce8b AK |
8952 | NULL |
8953 | }; | |
8954 | ||
1da177e4 LT |
8955 | /* |
8956 | * Local variables: | |
8957 | * c-basic-offset: 8 | |
8958 | * End: | |
8959 | */ |